CN216167136U - A silent foot dryer - Google Patents

Abstract

The utility model provides a mute foot dryer which comprises a shell, an air inlet cylinder, a first ventilating cylinder and an air outlet cylinder, wherein the air inlet cylinder, the first ventilating cylinder and the air outlet cylinder are arranged in the shell and are communicated in sequence; a fan is arranged in the air inlet cylinder; a heating device is arranged in the first ventilating duct; the circuit board is also included; at least one part of area of the circuit board is arranged on the air inlet side of the fan in the air inlet cylinder for heat dissipation. By the arrangement, only one part of the circuit board is placed in the main flow air flow path for heat dissipation, and the part is placed on the air inlet side of the fan in the air inlet cylinder for heat dissipation, so that violent friction between air flow and the circuit board and between the air flow and the electronic components can be greatly reduced, and noise is reduced.

Description

A silent foot dryer

technical field

The utility model relates to the field of household appliances, in particular to a silent foot dryer.

Background technique

Traditionally, after bathing or washing feet, especially in winter, people will use a foot cloth to dry the water on the feet. Usually family members reuse the same foot cloth to wipe their feet, and many people use it frequently. Foot cloth is not only easy to breed bacteria in the home environment, but also has the potential to cross-infect athlete's foot, foot odor and other risks. In addition, although the foot cloth can absorb the moisture of the feet through the principle of adsorption, it cannot completely dry the feet, especially the roots of the toes, and it is easy for foot fungi to survive and multiply in the breeding environment, and it is necessary to use the foot cloth after use It is time-consuming and laborious to wash and dry the foot towel frequently. In addition, the circuit board of the blower type equipment is usually set at the blower end to increase the flow rate and disturbance of the air flowing through the circuit board and improve the heat dissipation efficiency, but this will cause the friction between the air flow and the circuit board and electronic components. Serious noise problem. As a household appliance, the foot dryer is also of great significance to reduce the noise when it is working and create a quiet home environment.

Utility model content

Based on the above problems, a silent foot dryer with low noise, which can avoid cross infection, is convenient for drying feet, and is provided is provided.

A silent foot dryer, comprising a casing, an air inlet duct, a first ventilation duct and an air outlet duct connected in sequence in the casing; a fan is arranged in the air inlet duct; A heating device is provided; it also includes a circuit board; at least a part of the circuit board is placed on the air inlet side of the fan in the air inlet duct to dissipate heat. This setting can greatly reduce the violent friction between the airflow and the circuit board and electronic components, and reduce noise.

In one instance, electronic components with rated power greater than Q1 are arranged in the first area of the circuit board, and electronic components with rated power less than or equal to Q1 are arranged in the second area; at least the first area is arranged on the input The air inlet side of the fan in the air duct dissipates heat. In this embodiment, the layout of electronic components on the circuit board is improved, and electronic components with a rated power greater than Q1 that require more convection heat dissipation are arranged in the first area, and the rated power is less than or equal to Q1. The electronic components, that is, the electronic components that generally generate less heat and can work normally without or only require a little convection heat dissipation are arranged in the second area, and then the first area is placed in the air inlet duct. The heat dissipation on the air inlet side of the fan can not only reduce the contact between the electronic components and the airflow, but also heat dissipation on the air inlet side of the fan can effectively reduce the air flow rate flowing through the electronic components, which can further reduce noise.

In one instance, the electronic component includes a MOS transistor; the MOS transistor is disposed in the first area of the circuit board.

In one instance, the first area on the circuit board is used for arranging MOS transistors.

In one instance, the first area on the circuit board is provided with a MOS transistor.

In one of the embodiments, it further includes a second ventilator; the first ventilator communicates with the air outlet through the second ventilator, and the outlet end of the first ventilator is inserted into the first ventilator. The depth of the cavity of the second ventilator is the first depth, and the depth of the air inlet end of the air outlet into the cavity of the second ventilator is the second depth; the cross section of the second ventilator larger than the cross-section of the first ventilation tube; the cross-section of the second ventilation tube is larger than the cross-section of the air outlet. In this way, the first ventilator can form an abrupt cross-section in the second ventilator, and the sound wave is resisted here. Similarly, the air outlet can also form an abrupt cross-section in the second ventilator, Acoustic impedance can also be formed. Therefore, the first ventilator and the air outlet are communicated through the second ventilator, and the cross section of the second ventilator is larger than that of the first ventilator. The cross-section is larger than the cross-section of the air outlet, which can effectively block part of the sound waves from the first ventilation tube into the air outlet, and can effectively reduce noise.

In one embodiment, the sum of the first depth and the second depth is less than the length of the cavity of the second ventilator, that is, the total length of the first depth plus the second depth is smaller than the length of the cavity of the second ventilating cylinder. This arrangement can effectively reduce noise while reducing process loss.

In one of the embodiments, the axis of the first ventilation duct and the air outlet duct coincide.

In one embodiment, the first depth is 1/4 of the length of the cavity of the second ventilator, and the second depth is 1/2 of the length of the cavity of the second ventilator , or, the first depth is 1/2 of the length of the cavity of the second ventilation cylinder, and the second depth is 1/4 of the length of the cavity of the second ventilation cylinder. That is, the air outlet end of the first ventilator is inserted into the second ventilator, and the insertion depth is 1/4 of the axial length of the second ventilator, and the air inlet end of the air outlet is inserted into the second ventilator. into the second ventilator, and the insertion depth is 1/2 of the axial length of the second ventilator, or the outlet end of the first ventilator is inserted into the second ventilator, and the insertion depth is the 1/2 of the shaft length of the second ventilation duct, the air inlet end of the air outlet duct is inserted into the second ventilation duct, and the insertion depth is 1/4 of the shaft length of the second ventilation duct. Since the frequency range of the noise passing through the air fluid is generally wide, when the outlet end of the first ventilator is inserted into 1/2 of the axial length of the second ventilator, the odd-numbered pass frequencies in the noise can be well eliminated. When the outlet end of the first ventilator is inserted into 1/4 of the axial length of the second ventilator, the part of the even-numbered pass frequency in the noise can be well eliminated. When the air inlet end of the air outlet duct is inserted into 1/2 of the axial length of the second air duct, it can well eliminate the part of the odd-numbered pass frequency in the noise. When the air inlet end of the air outlet duct is inserted into the When the length of the second ventilator is 1/4 of the axial length, the part of the even-numbered passing frequency of the noise can be well eliminated. Therefore, the air outlet end of the first ventilator is inserted into the second ventilator, and The insertion depth is 1/4 of the shaft length of the second ventilator, the air inlet end of the air outlet is inserted into the second ventilator, and the insertion depth is 1/2 of the shaft length of the second ventilator , or, the air outlet end of the first ventilator is inserted into the second ventilator, and the insertion depth is 1/2 of the axial length of the second ventilator, and the air inlet end of the air outlet is inserted into the second ventilator. The insertion depth is 1/4 of the axial length of the second ventilator, which can effectively eliminate the noise of an integer multiple of the passing frequency in the air fluid.

In one embodiment, the first depth is between 1/4 and 1/2 of the length of the cavity of the second ventilation cylinder, and the second depth is the cavity of the second ventilation cylinder. Between 1/4 and 1/2 of the cavity length.

In one instance, the bottom of the casing is provided with an anti-skid foot pad; the anti-skid foot pad is an elastic foot pad, or is elastically connected with the casing. This arrangement, on the one hand, makes the foot dryer more stable when it is placed on the ground, and prevents the foot dryer from moving due to the reaction force of the blower during operation, and on the other hand, it is easier to level and balance the foot dryer when it is placed on the ground. And attached to the ground, thereby reducing the noise caused by the vibration of the dryer itself.

In one instance, an anti-skid foot pad is arranged at the bottom of the casing; a damping member is arranged between the anti-skid foot pad and the casing, which is used to convert the kinetic energy of vibration of the foot dryer into internal energy. . In this embodiment, the damping member can quickly absorb the kinetic energy of the foot dryer when it vibrates, reduce the vibration amplitude and frequency of the foot dryer, and further reduce the noise generated by the vibration of the foot dryer itself. Improve service life.

In one embodiment, the anti-skid foot pad is a hollow elastic rubber pad, or a rubber pad with several air bubbles arranged inside.

In one instance, it also includes a first air outlet and a second air outlet communicated with the air outlet; the first air outlet and the second air outlet are used to The air in the air duct is blown in two different directions at the same time; in this way, on the one hand, when the main body of the air outlet mechanism is fixed, two different air outlet directions can be obtained at the same time, and it can be blown to two different directions more accurately. feet, reduce the ineffective air volume and reduce energy consumption. On the other hand, the air outlet speed of the air outlet mechanism can be increased and the relative humidity of the outlet air can be reduced under the same configuration. In addition, the air outlet mechanism does not need to be in contact with the feet when drying the feet, which can effectively avoid cross infection and the breeding and reproduction of foot bacteria in the home environment.

In one instance, the included angle between the air outlet direction of the first air outlet and the air outlet direction of the second air outlet is between 30° and 120°.

In one instance, the included angle between the air outlet direction of the first air outlet and the air outlet direction of the second air outlet is between 60° and 90°.

In one instance, the included angle between the air outlet direction of the first air outlet and the air outlet direction of the second air outlet is between 45° and 105°.

In one case, the air outlet duct is provided with a first air outlet duct and a second air outlet duct; the first air outlet is communicated with the air outlet duct through the first air outlet duct, and The first air outlet and the first air outlet are connected by a universal rotation mechanism, so as to adjust the air outlet direction of the first air outlet; the second air outlet passes through the first air outlet. The second air outlet duct is communicated with the air outlet duct, and the second air outlet nozzle and the second air outlet duct are connected by a universal rotation mechanism, so as to adjust the air outlet of the second air outlet nozzle. direction.

In one instance, the first air outlet and the second air outlet are arranged symmetrically.

In one example, the first air outlet and the second air outlet are both elliptical air outlets, so that when the blown air reaches the feet, it is more suitable for the long block shape of the feet.

In one instance, the first air outlet duct and the second air outlet duct are arranged symmetrically, so that the airflow circulation environments of the two air outlet ducts are as similar as possible.

In one of the embodiments, the first air outlet duct is provided with a first ball bearing seat, the first air outlet is provided with a first ball head shell, and the first ball head shell and the first ball The bearing seat cooperates to form a ball hinge rotation mechanism, that is, the universal rotation mechanism between the first air outlet and the first air outlet duct is formed by the cooperation of the first ball head shell and the first ball bearing seat. ball hinge rotating mechanism.

In one of the embodiments, the second air outlet duct is provided with a second ball bearing seat, the second air outlet is provided with a second ball head shell, the second ball head shell is connected with the second ball The bearing seat cooperates to form a ball hinge rotation mechanism, that is, the universal rotation mechanism between the second air outlet and the second air outlet duct is formed by the cooperation of the second ball head shell and the second ball bearing seat. ball hinge rotating mechanism.

In one embodiment, an air interlayer is provided in the side wall of the first air outlet and/or the second air outlet. That is, the first air outlet and/or the second air outlet are of a casing type structure, the side wall is composed of two layers of wall shells, and an air interlayer is formed between the two layers of wall shells.

In one embodiment, the outer side wall of the first air outlet and/or the second air outlet is provided with an air outlet heat insulation shell; the inner side wall of the air outlet heat insulation shell is provided with a A plurality of supporting ribs are used to form a plurality of insulating air cavities between the air outlet nozzle heat insulating shell and the air outlet nozzle.

In one instance, the air inlet duct, the first ventilation duct and the air outlet duct are integrally formed.

In one instance, the air inlet duct, the first ventilation duct, the air outlet duct, the first air outlet duct and the second air outlet duct are integrally formed.

In one instance, the casing is provided with a first air outlet and a second air outlet; the first air outlet is provided with a first cover plate, and the second air outlet is provided in There is a second embedding plate; the air inlet duct, the first ventilation duct and the air outlet duct are arranged in the casing, and the first embedding plate is respectively connected to the casing and the first an air outlet duct to fix the position of the end of the first air outlet duct, and the second cover plate is connected to the casing and the second air outlet duct respectively to fix the end of the second air outlet duct The housing is also provided with an air intake grille, so that the air intake duct can inhale air from the outside.

In one instance, the first covering plate is used to fix the position of the end of the first air outlet duct in the first air outlet; the second covering plate is used to fix the end of the first air outlet The position of the end of the second air outlet duct is fixed in the second air outlet hole.

In one of the embodiments, the air inlet duct is provided with a flared air inlet. The flared air inlet communicates with the air inlet grill.

In one of the embodiments, a filter screen is also included. The filter screen is arranged between the air inlet and the air inlet grill.

In one embodiment, the first air outlet duct is further provided with a first valve for controlling the flow or blocking of the first air outlet duct.

In one embodiment, the second air outlet duct is further provided with a second valve for controlling the flow or blocking of the second air outlet duct.

In one embodiment, at least one of the first valve and the second valve is in an open communication state. In this way, when a stronger wind speed is required, in addition to adjusting the gear of the fan (increasing the speed and power), the valve of one of the air outlet channels can also be closed to increase the air volume and flow rate of the other air outlet channel. Reduce the time of high-power operation of the foot dryer and save energy.

In one embodiment, a projection indicator light is further provided on the casing; the projection indicator light is used to project a light signal indicating the working state of the foot dryer to the external environment of the foot dryer. Usually, the indicator lights of electrical equipment are installed on or near the buttons, but due to the special working position of the foot dryer, users generally use their feet to switch and trigger and switch functions, and the indicator lights are easily blocked by feet. The solution creatively adopts the projection indicator light and installs it on the outer casing of the foot dryer, so that the light signal of the foot dryer working status can be projected to the external environment of the foot dryer, such as on the floor, or on the wall, etc. , so set, the user will not cause misoperation because the change of the indicator light cannot be seen when using the foot to trigger a certain function.

In one embodiment, the projection indicator light is a picture projector.

In one of the embodiments, the projection indicator light is arranged on the lower half of the housing so as to be projected on the ground.

In one of the embodiments, the projection indicator light is arranged on the side of the housing so as to be projected on the ground or on the side wall.

In one embodiment, the light path of the projection indicator light is further provided with a diffusing mirror for dispersing the light projected by the projection indicator light to the outside.

In one embodiment, a light-transmitting part that can be scattered is arranged outside the projection indicator light, so as to diffuse the light transmitted by the projection indicator light, so that the user can see the change of the machine function in real time.

The silent foot dryer provided above can dissipate heat by placing only a part of the circuit board in the mainstream air flow path, and placing the part on the air inlet side of the fan in the air inlet duct to dissipate heat. Reduces intense friction between airflow and circuit boards and electronic components, reducing noise.

According to the above content, based on the same inventive concept, the present application also provides another solution for a silent foot dryer.

A silent foot dryer comprises a casing, an air inlet duct, a first air duct and an air outlet duct connected in sequence in the casing; a fan is arranged in the air inlet duct, and is located in the air inlet of the fan The side cylinder wall is also provided with a mounting structure for mounting the circuit board; the first ventilation cylinder is provided with a heating device. In this way, the circuit board can be installed in the air inlet duct and located on the air inlet side of the fan, which can greatly reduce the severe friction between the airflow and the circuit board and electronic components, and reduce noise.

In one of the embodiments, in the air inlet duct, an electrical hole is formed on the duct wall on the air inlet side of the fan; the electrical hole is used to pass through the circuit board, and a part of the circuit board is placed in the The air inlet side of the fan in the air inlet duct dissipates heat.

In one embodiment, the electrical hole is a long hole.

In one embodiment, the circuit board provided with the MOS tube part is inserted into the electrical hole and placed in the air intake duct to dissipate heat.

In one embodiment, the air inlet of the air inlet duct is trumpet-shaped, so as to reduce the noise generated by the friction between the airflow and the air inlet.

In one embodiment, the air inlet duct, the first ventilation duct and the air outlet duct are integrally formed tubular structures.

In one of the embodiments, it further includes a second ventilator; the first ventilator communicates with the air outlet through the second ventilator, and the outlet end of the first ventilator is inserted into the first ventilator. The depth of the cavity of the second ventilator is the first depth, and the depth of the air inlet end of the air outlet into the cavity of the second ventilator is the second depth; the cross section of the second ventilator larger than the cross-section of the first ventilation tube; the cross-section of the second ventilation tube is larger than the cross-section of the air outlet. In this way, the first ventilator can form an abrupt cross-section in the second ventilator, and the sound wave is resisted here. Similarly, the air outlet can also form an abrupt cross-section in the second ventilator, Acoustic impedance can also be formed. Therefore, the first ventilator and the air outlet are communicated through the second ventilator, and the cross section of the second ventilator is larger than that of the first ventilator. The cross-section is larger than the cross-section of the air outlet, which can effectively block part of the sound waves from the first ventilation tube into the air outlet, and can effectively reduce noise.

In one embodiment, the sum of the first depth and the second depth is less than the length of the cavity of the second ventilator, that is, the total length of the first depth plus the second depth is smaller than the length of the cavity of the second ventilating cylinder. This arrangement can effectively reduce noise while reducing process loss.

In one of the embodiments, the axis of the first ventilation duct and the air outlet duct coincide.

In one embodiment, the first depth is 1/4 of the length of the cavity of the second ventilator, and the second depth is 1/2 of the length of the cavity of the second ventilator , or, the first depth is 1/2 of the length of the cavity of the second ventilation cylinder, and the second depth is 1/4 of the length of the cavity of the second ventilation cylinder. That is, the air outlet end of the first ventilator is inserted into the second ventilator, and the insertion depth is 1/4 of the axial length of the second ventilator, and the air inlet end of the air outlet is inserted into the second ventilator. into the second ventilator, and the insertion depth is 1/2 of the axial length of the second ventilator, or the outlet end of the first ventilator is inserted into the second ventilator, and the insertion depth is the 1/2 of the shaft length of the second ventilation duct, the air inlet end of the air outlet duct is inserted into the second ventilation duct, and the insertion depth is 1/4 of the shaft length of the second ventilation duct. Since the frequency range of the noise passing through the air fluid is generally wide, when the outlet end of the first ventilator is inserted into 1/2 of the axial length of the second ventilator, the odd-numbered pass frequencies in the noise can be well eliminated. When the outlet end of the first ventilator is inserted into 1/4 of the axial length of the second ventilator, the part of the even-numbered pass frequency in the noise can be well eliminated. When the air inlet end of the air outlet duct is inserted into 1/2 of the axial length of the second air duct, it can well eliminate the part of the odd-numbered pass frequency in the noise. When the air inlet end of the air outlet duct is inserted into the When the length of the second ventilator is 1/4 of the axial length, the part of the even-numbered passing frequency of the noise can be well eliminated. Therefore, the air outlet end of the first ventilator is inserted into the second ventilator, and The insertion depth is 1/4 of the shaft length of the second ventilator, the air inlet end of the air outlet is inserted into the second ventilator, and the insertion depth is 1/2 of the shaft length of the second ventilator , or, the air outlet end of the first ventilator is inserted into the second ventilator, and the insertion depth is 1/2 of the axial length of the second ventilator, and the air inlet end of the air outlet is inserted into the second ventilator. The insertion depth is 1/4 of the axial length of the second ventilator, which can effectively eliminate the noise of an integer multiple of the passing frequency in the air fluid.

In one embodiment, the first depth is between 1/4 and 1/2 of the length of the cavity of the second ventilation cylinder, and the second depth is the cavity of the second ventilation cylinder. Between 1/4 and 1/2 of the cavity length.

In one instance, the bottom of the casing is provided with an anti-skid foot pad; the anti-skid foot pad is an elastic foot pad, or is elastically connected with the casing. This arrangement, on the one hand, makes the foot dryer more stable when it is placed on the ground, and prevents the foot dryer from moving due to the reaction force of the blower during operation, and on the other hand, it is easier to level and balance the foot dryer when it is placed on the ground. And attached to the ground, thereby reducing the noise caused by the vibration of the dryer itself.

In one instance, an anti-skid foot pad is arranged at the bottom of the casing; a damping member is arranged between the anti-skid foot pad and the casing, which is used to convert the kinetic energy of vibration of the foot dryer into internal energy. . In this embodiment, the damping member can quickly absorb the kinetic energy of the foot dryer when it vibrates, reduce the vibration amplitude and frequency of the foot dryer, and further reduce the noise generated by the vibration of the foot dryer itself. Improve service life.

In one embodiment, the anti-skid foot pad is a hollow elastic rubber pad, or a rubber pad with several air bubbles arranged inside.

In the silent foot dryer provided above, the circuit board can be installed by arranging a mounting structure for mounting the circuit board on the cylinder wall located on the air inlet side of the fan; The air inlet side of the fan can greatly reduce the violent friction between the airflow and the circuit board and electronic components, reducing noise.

In addition, the present application also provides a dual-air duct foot dryer, comprising an air inlet duct, a first ventilating duct and a third air outlet duct connected in sequence to form a first air duct, and the air inlet duct, the first The ventilator and the fourth air outlet duct are connected in sequence to form a second air duct; it also includes a first air outlet communicated with the third air outlet duct, and the first air outlet is connected to the third air outlet duct. They are connected by a universal rotation mechanism, so as to adjust the air outlet direction of the first air outlet; it also includes a second air outlet communicated with the fourth air outlet duct, and the second air outlet It is connected with the fourth air outlet duct through a universal rotation mechanism, so as to adjust the air outlet direction of the second air outlet; a fan is arranged in the air inlet duct; a fan is arranged in the first air duct Has heating. With this arrangement, on the one hand, when the main body of the foot dryer is fixed, the air outlet direction can be freely changed by rotating the angles of the first air outlet and the second air outlet. On the other hand, under the same configuration, the air outlet speed of the foot dryer can be increased, the relative humidity of the air outlet can be reduced, and the efficiency of drying the feet can be improved. feet, reduce the ineffective air volume and reduce energy consumption. In addition, the foot dryer does not need to be in contact with the feet when drying the feet, which can effectively avoid cross-infection and the breeding of foot bacteria in the home environment.

In one of the embodiments, it further includes a second ventilator; the first ventilator communicates with the third air outlet duct and the fourth air outlet duct through the second ventilator, and the first ventilator The depth that the air outlet end of the ventilator is inserted into the cavity of the second ventilator is the first depth, and the depth that the air inlet end of the third air outlet duct is inserted into the cavity of the second ventilator is the first depth. Three depths; the depth at which the air inlet end of the fourth air outlet duct is inserted into the cavity of the second ventilator is the fourth depth; the cross section of the second ventilator is larger than the cross section of the first ventilator cross section; the cross section of the second ventilator is larger than the cross section of the third air outlet duct, and is larger than the cross section of the fourth air outlet duct. In this way, the first ventilator can form an abrupt cross section in the second ventilator, and the sound wave is resisted here. Similarly, the third air outlet duct and the fourth air outlet duct are in the first A sudden change of section can also be formed in the second ventilator, and acoustic impedance can also be formed. Therefore, the first ventilator is communicated with the third air outlet duct and the fourth air outlet duct through the second ventilator. The cross-section of the second ventilator is larger than the cross-section of the first ventilator and larger than the cross-section of the third air outlet duct and the fourth air outlet duct, which can effectively block part of the sound waves from the The first ventilator enters the third air outlet duct and the fourth air outlet duct to transmit out, which can effectively reduce noise.

In one embodiment, the sum of the first depth and the third depth is less than the length of the cavity of the second ventilator, and the sum of the first depth and the fourth depth is less than the length of the cavity of the second ventilator. The length of the cavity of the second ventilator cylinder, that is, the total length of the first depth plus the third depth, and the total length of the first depth plus the fourth depth are all smaller than the second depth The length of the ventilator barrel cavity. This arrangement can effectively reduce noise while reducing process loss.

In one embodiment, the first depth is 1/4 of the length of the cavity of the second ventilator, and the third depth is 1/2 of the length of the cavity of the second ventilator , the fourth depth is 1/2 of the length of the cavity of the second ventilator, or the first depth is 1/2 of the length of the cavity of the second ventilator, and the first depth is 1/2 of the cavity length of the second ventilator. The third depth is 1/4 of the length of the cavity of the second ventilation cylinder, and the fourth depth is 1/4 of the length of the cavity of the second ventilation cylinder. That is, the air outlet end of the first ventilator is inserted into the second ventilator, and the insertion depth is 1/4 of the axial length of the second ventilator, and the air inlet end of the third air outlet duct is inserted into the second ventilator. Inside the second ventilator, and the insertion depth is 1/2 of the shaft length of the second ventilator, and the air inlet end of the fourth air outlet duct is inserted into the second ventilator, and the insertion depth is all the 1/2 of the shaft length of the second ventilator, or, the outlet end of the first ventilator is inserted into the second ventilator, and the insertion depth is 1/2 of the shaft length of the second ventilator, The air inlet end of the third air outlet duct is inserted into the second ventilator, and the insertion depth is 1/4 of the shaft length of the second ventilator, and the air inlet end of the fourth air outlet duct is inserted into the second ventilator. into the second ventilator, and the insertion depth is 1/4 of the axial length of the second ventilator. Since the frequency range of the noise passing through the air fluid is generally wide, when the outlet end of the first ventilator is inserted into 1/2 of the axial length of the second ventilator, the odd-numbered pass frequencies in the noise can be well eliminated. When the outlet end of the first ventilator is inserted into 1/4 of the axial length of the second ventilator, the part of the even-numbered pass frequency in the noise can be well eliminated. When the air inlet end of the third air outlet duct or the fourth air outlet duct is inserted into 1/2 of the axial length of the second ventilator, it can well eliminate the part of the odd-numbered pass frequency in the noise. When the air inlet end of the third air outlet duct or the fourth air outlet duct is inserted into 1/4 of the axial length of the second ventilator, the part of the even-numbered passing frequency in the noise can be well eliminated. The air outlet end of the first ventilator is inserted into the second ventilator, and the insertion depth is 1/4 of the axial length of the second ventilator. The third air outlet duct and the fourth air outlet The air inlet end of the duct is inserted into the second ventilator, and the insertion depth is 1/2 of the axial length of the second ventilator, or the air outlet end of the first ventilator is inserted into the second ventilator inside, and the insertion depth is 1/2 of the shaft length of the second ventilator, the air inlet end of the third air outlet duct or the fourth air outlet duct is inserted into the second ventilator, and the insertion depth is It is 1/4 of the shaft length of the second ventilator, which can effectively eliminate the noise of an integer multiple of the passing frequency in the air fluid.

In one of the embodiments, the first depth is between 1/4 and 1/2 of the length of the cavity of the second ventilation cylinder, and the third depth is the cavity of the second ventilation cylinder. The fourth depth is between 1/4 and 1/2 of the length of the cavity, and the fourth depth is between 1/4 and 1/2 of the length of the cavity of the second ventilator cylinder.

In one embodiment, the third air outlet duct and the fourth air outlet duct communicate with each other through several bypass pipes. The lengths and diameters of several bypass pipes are suitable so that the inner air column can resonate with the sound waves in the third air outlet duct and the fourth air outlet duct.

In one of the embodiments, the third depth is greater or less than the fourth depth.

In one embodiment, the first ventilation pipe is communicated with the third air outlet pipe and the fourth air outlet pipe through a "herringbone"-shaped ventilation pipe in the cavity of the second ventilation pipe; the The pipe wall of the ventilation pipe is provided with several ventilation holes.

The above-mentioned dual-air duct foot dryer comprises an air inlet duct, a first ventilation duct and a third air outlet duct which are connected in sequence to form a first air duct, and the air inlet duct and the first ventilation duct are connected in turn to form a first air duct. and the fourth air outlet duct are sequentially connected to form a second air duct; the first air outlet is set to communicate with the third air outlet duct, and the first air outlet and the third air outlet duct pass through The universal rotation mechanism is connected, and the second air outlet is arranged to communicate with the fourth air outlet duct, and the second air outlet and the fourth air outlet duct are connected through a universal rotation mechanism, so set up, On the one hand, when the main body of the foot dryer is fixed, the air outlet direction can be freely changed by rotating the angle of the first air outlet and the second air outlet, and it can have two different air outlet directions at the same time. . On the other hand, under the same configuration, the air outlet speed of the foot dryer can be increased, the relative humidity of the air outlet can be reduced, and the efficiency of drying the feet can be improved. feet, reduce the ineffective air volume and reduce energy consumption. In addition, the foot dryer does not need to be in contact with the feet when drying the feet, which can effectively avoid cross-infection and the breeding of foot bacteria in the home environment.

In addition, the present application also provides a foot dryer that facilitates heat dissipation of high-calorie electronic components, including an air inlet duct and a circuit board; an electrical hole is formed on the wall of the air inlet duct; the electrical hole is used to pass through For the circuit board, the electronic components on the circuit board are placed in the air intake duct to dissipate heat; the first area of the circuit board is provided with electronic components with a rated power greater than Q1, and the second area is provided with an electronic component with a rated power less than or a component equal to Q1; the first area on the circuit board is placed in the air inlet duct through the electrical hole.

In one embodiment, a fan is arranged in the air inlet duct; the electrical hole is opened on the wall between the air inlet end of the fan and the air inlet end of the air inlet duct, so as to facilitate the circuit The electronic components on the board are the first to contact the fresh air flowing in from the outside to facilitate cooling, and at the same time, it can reduce the air flow rate flowing through the electronic components and reduce noise.

In one embodiment, the electrical hole is a long hole.

In one of the embodiments, the first region is used for arranging MOS transistors.

In the foot dryer provided above, by opening an electrical hole on the wall of the air inlet duct, and inserting the first area provided with electronic components with a rated power greater than Q1 into the electrical hole, the rated power is greater than Q1. The electronic components are placed upstream of the air flow path, so as to be the first to contact the fresh air flowing in from the outside, so as to facilitate cooling, and at the same time reduce the flow rate of the air flowing through the electronic components, and reduce the friction between the air and the electronic components. noise.

According to the above content, the present application also provides another design solution of a foot dryer.

A foot dryer comprises an air inlet duct, a first air duct and an air outlet duct that are communicated in sequence; the air outlet duct is provided with a first air outlet duct and a second air outlet duct; A third ball bearing seat is provided, and the third ball bearing seat is connected with the inner wall of the first air outlet duct through a plurality of first support baffles, and the first support baffle plate is along the axis of the first air outlet duct The third ball bearing seat and the inner wall of the first air outlet duct form several air outlet channels; the second air outlet duct is provided with a fourth ball bearing seat, and the fourth ball bearing seat is arranged in the same direction. The bearing seat is connected to the inner wall of the first air outlet duct through a plurality of second support baffles, and the second support baffles are axially arranged along the second air outlet duct, so that the third ball bearing seat is connected to the inner wall of the first air outlet duct. Several air outlet channels are formed between the inner walls of the first air outlet pipe; it also includes a first guiding body and a second guiding body; the first guiding body is provided with a first ball head, and the first ball head and the The third ball bearing seat cooperates to form a ball hinge rotation mechanism; the second guide body is provided with a second ball head, and the second ball head cooperates with the fourth ball bearing seat to form a ball hinge rotation mechanism; the first A first annular air outlet gap is formed at the air guide body and the air outlet of the first air outlet duct, and the first air guide body is used to guide the high-speed airflow emitted from the first annular air outlet gap through the Coanda effect. wind direction, and further reduce the relative humidity of the air outlet to improve the drying effect; the second air guide body and the air outlet of the second air outlet duct form a second annular air outlet gap, and the second air guide body is used for Through the Coanda effect, the high-speed air flow emitted from the second annular air outlet gap is directed to the air outlet direction, and the relative humidity of the air outlet is further reduced to improve the drying effect; the air inlet duct is provided with a fan; the air inlet duct is provided with a fan; A heating device is arranged in the first ventilator.

In the above-mentioned foot dryer provided, a first air outlet duct and a second air outlet duct are arranged on the air inlet duct, the first air duct and the air outlet duct which are connected in sequence, and the first air outlet duct and the second air outlet duct are arranged in the first air duct and the second air outlet duct. A first air guide body is arranged in an air outlet duct, and a first annular air outlet gap is formed between the first air guide body and the air outlet of the first air outlet duct, and the first air guide body is used for the Coanda effect to The high-speed airflow emitted from the first annular air outlet slot is directed to the air outlet direction, and a second guide body is arranged in the second air outlet duct, and the second guide body is connected to the air outlet of the second air outlet duct. A second annular air outlet slot is formed at the upper end, and the second guiding fluid is used to guide the high-speed airflow emitted from the second annular air outlet slot to the air outlet direction through the Coanda effect. When the main body is fixed, the air outlet direction can be freely changed by rotating the angle of the first air outlet and the second air outlet, and two different air outlet directions can be provided at the same time. On the other hand, under the same configuration, the air outlet speed of the foot dryer can be increased, the relative humidity of the air outlet can be further reduced, and the efficiency of drying the feet can be improved. Only feet, reduce ineffective air volume and reduce energy consumption. In addition, the foot dryer does not need to be in contact with the feet when drying the feet, which can effectively avoid cross-infection and the breeding of foot bacteria in the home environment.

In addition, the present application also provides another dual-air duct foot dryer, comprising an air inlet duct, a first ventilation duct and a third air outlet duct connected in sequence to form a first air duct, and the air inlet duct, the third air duct and the A ventilator and a fourth air outlet duct are connected in sequence to form a second air duct; a third ball bearing seat is arranged in the first air outlet duct, and the third ball bearing seat is connected to the second air duct through a plurality of first support baffles The inner wall of the first air outlet duct is connected, and the first support baffle is axially arranged along the first air outlet duct, so that several an air outlet channel; a fourth ball bearing seat is arranged in the second air outlet duct, and the fourth ball bearing seat is connected with the inner wall of the first air outlet duct through a plurality of second support baffles, and the second air outlet duct is The supporting baffle plate is axially arranged along the second air outlet duct, so that several air outlet channels are formed between the third ball bearing seat and the inner wall of the first air outlet duct; and a first guide body and a second air outlet channel are also included. a guide body; the first guide body is provided with a first ball head, and the first ball head cooperates with the third ball bearing seat to form a ball hinge rotation mechanism; the second guide body is provided with a second ball head, The second ball head cooperates with the fourth ball bearing seat to form a ball hinge rotation mechanism; the first air guide body and the air outlet of the first air outlet duct form a first annular air outlet gap, and the first air outlet gap is formed. A guiding body is used to guide the high-speed air flow from the first annular air outlet slot to the outlet direction through the Coanda effect, and further reduce the relative humidity of the outlet air and improve the drying effect; the second guiding body is connected to the air outlet. A second annular air outlet slit is formed at the air outlet of the second air outlet duct, and the second guiding fluid is used to guide the high-speed airflow emitted from the second annular air outlet slit to the air outlet direction through the Coanda effect, and The relative humidity of the outlet air is further reduced and the drying effect is improved; a fan is arranged in the air inlet duct; a heating device is arranged in the first air duct.

The above-mentioned dual-air duct foot dryer comprises an air inlet duct, a first ventilation duct and a third air outlet duct which are connected in sequence to form a first air duct, and the air inlet duct and the first ventilation duct are connected in turn to form a first air duct. and the fourth air outlet duct are sequentially connected to form a second air duct; and a first guide body is arranged in the first air outlet duct, and the first guide body and the air outlet of the first air outlet duct form a second air duct. An annular air outlet slot, the first guiding body is used to guide the high-speed airflow emitted from the first annular air outlet slot to the outlet direction through the Coanda effect, and a second guiding body is arranged in the second air outlet duct A second annular air outlet gap is formed between the second guiding body and the air outlet of the second air outlet duct, and the second guiding body is used to remove the air from the second annular air outlet gap through the Coanda effect. The ejected high-speed air flow is directed to the direction of the air outlet. With this arrangement, on the one hand, when the main body of the foot dryer is fixed, the direction of the air outlet can be freely changed by rotating the angle of the first guiding body and the second guiding body, and It can have two different wind directions at the same time. On the other hand, under the same configuration, the annular air outlet gap can increase the air outlet speed of the foot dryer, further reduce the relative humidity of the air outlet, and improve the efficiency of drying the feet. At the same time, the use of two blowing nozzles can be more comparable Precisely blows to both feet, reducing ineffective air volume and energy consumption. In addition, the foot dryer does not need to be in contact with the feet when drying the feet, which can effectively avoid cross-infection and the breeding of foot bacteria in the home environment.

The application also provides another design scheme of a foot dryer, including an air inlet duct, a first air duct and an air outlet duct connected in sequence; the air outlet duct is provided with a third air outlet and a fourth air outlet; Also includes a fifth air outlet duct communicated with the third air outlet, and a sixth air outlet duct communicated with the fourth air outlet; the fifth air outlet duct and the sixth air outlet duct It is a flexible pipe; the third air outlet is provided with a third ball bearing seat, and the third ball bearing seat is connected with the inner wall of the third air outlet through several first support baffles, and the first The support baffle is arranged along the axial direction of the third air outlet, so that several air outlet channels are formed between the third ball bearing seat and the inner wall of the third air outlet; the fourth air outlet is arranged in the There is a fourth ball bearing seat, and the fourth ball bearing seat is connected with the inner wall of the fourth air outlet through a plurality of second support baffles, and the second support baffle is along the axial direction of the fourth air outlet is arranged so that several air outlet channels are formed between the fourth ball bearing seat and the inner wall of the fourth air outlet; it also includes a first guiding body and a second guiding body; the first guiding body is provided with a first guiding body. A ball head, the first ball head cooperates with the third ball bearing seat to form a ball hinge rotation mechanism; the second guide body is provided with a second ball head, and the second ball head and the fourth ball bearing The seat cooperates to form a ball hinge rotating mechanism; the first guiding body is connected with the air outlet of the fifth air outlet duct through a third supporting baffle to form a third annular air outlet gap, and the first guiding body is used for Through the Coanda effect, the high-speed air flow emitted from the third annular air outlet gap is directed to the air outlet direction, and the relative humidity of the air outlet is further reduced to improve the drying effect; the second guide body and the sixth air outlet The air outlet of the duct is connected by a fourth supporting baffle to form a fourth annular air outlet slot, and the second guide body is used to guide the high-speed airflow emitted from the fourth annular air outlet slot to the air outlet through the Coanda effect. direction, and further reduce the relative humidity of the outlet air and improve the effect of drying feet; a fan is arranged in the air inlet duct; a heating device is arranged in the first ventilation duct. With this arrangement, on the one hand, when the main body of the foot dryer is fixed, the direction of the air outlet can be freely changed by rotating the angle of the first guiding body and the second guiding body, and two different air outlets can be provided at the same time. direction. On the other hand, under the same configuration, the annular air outlet gap can increase the air outlet speed of the foot dryer, further reduce the relative humidity of the air outlet, and improve the efficiency of drying the feet. It is more accurate to blow to the two feet, reducing the ineffective air output and reducing energy consumption. In addition, the foot dryer does not need to be in contact with the feet when drying the feet, which can effectively avoid cross-infection and the breeding of foot bacteria in the home environment.

Description of drawings

1 is a schematic cross-sectional structural diagram of a foot dryer provided by an embodiment;

2 is a schematic perspective view of a cross-sectional structure of a foot dryer provided by an embodiment;

3 is an enlarged structural schematic diagram of a section A of a perspective view of a foot dryer provided by an embodiment;

4 is a schematic perspective view of the internal structure of the foot dryer provided by an embodiment after removing the upper casing;

5 is a schematic three-dimensional schematic diagram of a bottom surface structure of a foot dryer provided by an embodiment;

6 is a schematic cross-sectional structural diagram of a foot dryer provided with a ventilator of sudden change section provided by an embodiment;

7 is an enlarged schematic structural diagram of part B in a cross-sectional view of a foot dryer provided by an embodiment;

8 is a schematic cross-sectional structural diagram of a dual-air duct foot dryer provided with a ventilator of sudden change section provided by an embodiment;

FIG. 9 is an enlarged schematic structural diagram of part C in a cross-sectional view of the foot dryer provided by an embodiment;

10 is a schematic cross-sectional structural diagram of a foot dryer provided by an embodiment;

11 is an enlarged schematic structural diagram of part D in a cross-sectional view of a foot dryer provided by an embodiment;

FIG. 12 is a schematic cross-sectional structure diagram of A-A of the D part of the foot dryer provided by an embodiment.

Description of reference numerals: 100. Housing; 110. Inlet grill; 120. Filter; 131. First inlay plate; 132. Second inlay plate; 210. Air inlet duct; 211. Air inlet; 212. Electrical hole; 220. The first ventilator; 230. Air outlet; 231. The first air outlet duct; 234. The second ball bearing seat; 235. The first support partition; 236. The second support partition; 240. The first air outlet; 241. The first ball head shell; 250. The second air outlet ; 251. The second ball head shell; 252. The air outlet heat insulation shell; 260. The second ventilator; 271. The third air outlet duct; 272. The fourth air outlet duct; 273. The third ball bearing seat; 274. Fourth ball bearing seat; 280. First guide body; 281. First ball head; 290. Second guide body; 291. Second ball head; 300. Fan; 400. Heating device; 500. Circuit board; 510. Electronic components.

Detailed ways

In this patent document, FIGS. 1-12 , discussed below, and the various embodiments used to describe the principles or methods of the present disclosure are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Preferred embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings. In the following description, detailed descriptions of well-known functions or configurations are omitted so as not to obscure the subject matter of the present disclosure with unnecessary detail. Also, the terms used herein will be defined according to the functions of the present application. Therefore, the terms may vary according to the user's or operator's intention or usage. Therefore, the terms used in this document must be understood based on the descriptions made in this document.

A silent foot dryer, as shown in FIG. 2 , includes a casing 100 , an air inlet duct 210 , a first ventilation duct 220 and an air outlet duct 230 which are arranged in the casing 100 and communicated in sequence. A fan 300 is arranged in the air inlet duct 210 . A heating device 400 is disposed in the first ventilation tube 220 . A circuit board 500 is also included. At least a part of the circuit board 500 is placed on the air inlet side of the fan 300 in the air inlet duct 210 to dissipate heat. With this arrangement, the severe friction between the airflow and the circuit board 500 and the electronic components 510 can be greatly reduced, thereby reducing noise.

In one instance, the first area on the circuit board 500 is provided with electronic components 510 whose rated power is greater than Q1 , and the second area is provided with electronic components 510 whose rated power is less than or equal to Q1 . At least the first region dissipates heat on the air inlet side of the fan 300 placed in the air inlet duct 210 . In this embodiment, the arrangement pattern of the electronic components 510 on the circuit board 500 is improved, and the electronic components 510 whose rated power is greater than Q1 and which require more convection heat dissipation are arranged in the first area, and the rated power is less than The electronic components 510 that are equal to or equal to Q1, that is, the electronic components 510 that generally generate less heat and do not need or only need a little convection heat dissipation to work normally are arranged in the second area, and then the first area is placed in the air inlet duct 210 The internal fan 300 dissipates heat on the air inlet side, which can not only reduce the contact between the electronic components 510 and the airflow, but also can effectively reduce the air flow rate flowing through the electronic components 510 by dissipating heat on the air inlet side of the fan 300, which can further reduce noise.

In one instance, the electronic components 510 include MOS transistors. The MOS transistor is arranged in the first area on the circuit board 500 .

In one instance, the first area on the circuit board 500 is used for arranging MOS transistors.

In one instance, the first area on the circuit board 500 is provided with MOS transistors.

In one of the embodiments, as shown in FIG. 6 , a second ventilator 260 is further included. The first ventilator 220 and the air outlet 230 are communicated through the second ventilator 260, and the depth at which the air outlet end of the first ventilator 220 is inserted into the cavity of the second ventilator 260 is the first depth, and the depth of the air outlet 230 is the first depth. The depth at which the air inlet end is inserted into the cavity of the second ventilator 260 is the second depth. The cross section of the second ventilator 260 is larger than that of the first ventilator 220 . The cross section of the second ventilation duct 260 is larger than that of the air outlet duct 230 . In this way, the first ventilator 220 can form an abrupt cross-section in the second ventilator 260, and the sound wave is resisted here. Therefore, the first ventilator 220 and the air outlet 230 are communicated through the second ventilator 260, and the cross section of the second ventilator 260 is larger than the cross section of the first ventilator 220 and larger than the cross section of the air outlet 230. The cross section can effectively block part of the sound waves from the first ventilator 220 into the air outlet 230 and outgoing, and can effectively reduce noise.

In one of the embodiments, as shown in FIG. 6 or FIG. 7 , the sum of the first depth and the second depth is less than the length of the cavity of the second ventilator 260 , that is, the total length of the first depth plus the second depth It is less than the length of the cavity of the second ventilator 260 . This arrangement can effectively reduce noise while reducing process loss.

In one embodiment, as shown in FIG. 6 or FIG. 7 , the axes of the first ventilation duct 220 and the air outlet duct 230 are coincident.

In one embodiment, as shown in FIG. 7 , the first depth is 1/4 of the length of the cavity of the second ventilator 260 , and the second depth is 1/2 of the length of the cavity of the second ventilator 260 , or (not shown in the figure) the first depth is 1/2 of the length of the cavity of the second ventilator 260 , and the second depth is 1/4 of the length of the cavity of the second ventilator 260 . That is, the air outlet end of the first ventilation tube 220 is inserted into the second ventilation tube 260, and the insertion depth is 1/4 of the axial length of the second ventilation tube 260, and the air inlet end of the air outlet tube 230 is inserted into the second ventilation tube 260. , and the insertion depth is 1/2 of the axial length of the second ventilator 260, or the outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260. 2. The air inlet end of the air outlet duct 230 is inserted into the second ventilation duct 260 , and the insertion depth is 1/4 of the axial length of the second ventilation duct 260 . Since the noise frequency range of passing air fluid is generally relatively wide, when the air outlet end of the first ventilator 220 is inserted into 1/2 of the axial length of the second ventilator 260, the part of the noise with an odd multiple of the passing frequency can be well eliminated. , when the air outlet end of the first ventilator 220 is inserted into 1/4 of the axial length of the second ventilator 260, the part of the even-numbered pass frequency in the noise can be well eliminated. When the wind end is inserted into 1/2 of the axial length of the second ventilator 260, the part of the odd-numbered pass frequency in the noise can be well eliminated. When 1/4, the part of the even-numbered passing frequency in the noise can be well eliminated. Therefore, the air outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is the axial length of the second ventilator 260. 1/4, the air inlet end of the air outlet duct 230 is inserted into the second air duct 260, and the insertion depth is 1/2 of the axial length of the second air duct 260, or the air outlet end of the first air duct 220 is inserted into the second air duct 260. Inside the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260, and the air inlet end of the air outlet duct 230 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260. 1/4, which can effectively eliminate the noise of integer times of passing frequency in the air fluid.

In one embodiment, the first depth is between 1/4 and 1/2 of the length of the cavity of the second ventilator 260 , and the second depth is 1/4 of the length of the cavity of the second ventilator 260 to 1/2.

In one instance, as shown in FIG. 5 , the bottom of the casing 100 is provided with an anti-skid foot pad 150 . The anti-skid foot pad 150 is an elastic foot pad, or is elastically connected with the housing 100 . This arrangement, on the one hand, makes the foot dryer more stable when it is placed on the ground, and prevents the foot dryer from moving due to the reaction force of the blower during operation, and on the other hand, it is easier to level and balance the foot dryer when it is placed on the ground. And attached to the ground, thereby reducing the noise caused by the vibration of the dryer itself.

In one instance, as shown in FIG. 5 , the bottom of the casing 100 is provided with an anti-skid foot pad 150 . A damping member (not shown in the figure) is arranged between the anti-skid foot pad 150 and the housing 100 for converting the kinetic energy of the vibration of the foot dryer into internal energy during operation. In this embodiment, the damping member can quickly absorb the kinetic energy of the foot dryer when it vibrates, reduce the vibration amplitude and frequency of the foot dryer, and further reduce the noise generated by the vibration of the foot dryer itself. Improve service life.

In one embodiment, the anti-skid foot pad 150 is a hollow elastic rubber pad (not shown in the figure), or a rubber pad with several air bubbles (not shown in the figure) disposed inside.

In one instance, as shown in FIG. 1 or FIG. 2 , a first air outlet 240 and a second air outlet 250 communicated with the air outlet duct 230 are further included. The first air outlet 240 and the second air outlet 250 are used to blow the air in the air outlet duct 230 to two different directions at the same time. With this arrangement, on the one hand, when the main body of the blower 300 is fixed, two different air outlet directions can be obtained at the same time, and the two feet can be blown more accurately, thereby reducing the ineffective air volume and reducing energy consumption. On the other hand, under the same configuration, the outlet speed of the outlet fan 300 can be increased and the relative humidity of the outlet air can be reduced. In addition, the blower 300 structure does not need to be in contact with the feet when drying the feet, which can effectively avoid cross infection and the breeding and reproduction of foot bacteria in the home environment.

In one case, the included angle between the air outlet direction of the first air outlet 240 and the air outlet direction of the second air outlet 250 is between 30° and 120°.

In one instance, the included angle between the air outlet direction of the first air outlet 240 and the air outlet direction of the second air outlet 250 is between 60° and 90°.

In one instance, the included angle between the air outlet direction of the first air outlet 240 and the air outlet direction of the second air outlet 250 is between 45° and 105°.

In one example, as shown in FIG. 1 or FIG. 2 , the air outlet duct 230 is provided with a first air outlet duct 231 and a second air outlet duct 232 . The first air outlet 240 is communicated with the air outlet duct 230 through the first air outlet duct 231, and the first air outlet 240 and the first air outlet duct 231 are connected by a universal rotation mechanism, so as to adjust the first air outlet The outlet direction of the mouth 240. The second air outlet 250 is communicated with the air outlet duct 230 through the second air outlet duct 232, and the second air outlet 250 and the second air outlet duct 232 are connected by a universal rotation mechanism, so as to adjust the second air outlet The outlet direction of the mouth 250.

In one instance, as shown in FIG. 1 , the first air outlet 240 and the second air outlet 250 are arranged symmetrically.

In one example, the first air outlet 240 and the second air outlet 250 are both elliptical air outlets, so that when the blown air reaches the feet, it is more suitable for the long block shape of the feet.

In one example, as shown in FIG. 1 or FIG. 2 , the first air outlet duct 231 and the second air outlet duct 232 are arranged symmetrically, so that the air flow environment of the two air outlet ducts is as same as possible.

In one embodiment, as shown in FIG. 1 or FIG. 2 , the first air outlet duct 231 is provided with a first ball bearing seat 233 , the first air outlet 240 is provided with a first ball head 281 and a shell 241 . The head 281 shell 241 cooperates with the first ball bearing seat 233 to form a ball hinge rotating mechanism, that is, the universal rotating mechanism between the first air outlet 240 and the first air outlet duct 231 is the first ball head 281 shell 241 and the first The ball bearing seat 233 cooperates to form a ball hinge rotation mechanism.

In one embodiment, as shown in FIG. 1 or FIG. 2 or FIG. 3 , the second air outlet duct 232 is provided with a second ball bearing seat 234 , the second air outlet 250 is provided with a second ball head 291 and a shell 251 , The second ball joint 291 shell 251 cooperates with the second ball bearing seat 234 to form a ball hinge rotation mechanism, that is, the universal rotation mechanism between the second air outlet 250 and the second air outlet duct 232 is the second ball joint 291 shell 251 A ball hinge rotating mechanism formed in cooperation with the second ball bearing seat 234 .

In one embodiment, as shown in FIG. 3 , an air interlayer is provided in the side wall of the first air outlet 240 and/or the second air outlet 250 . That is, the first air outlet 240 and/or the second air outlet 250 are of a casing type structure, the side wall is composed of two layers of wall shells, and an air interlayer is formed between the two layers of wall shells.

In one embodiment, as shown in FIG. 3 , the outer side walls of the first air outlet 240 and/or the second air outlet 250 are provided with an air outlet heat insulating shell 252 . The inner side wall of the air outlet heat insulating shell 252 is provided with a plurality of supporting ribs, so that a plurality of insulating air cavities are formed between the air outlet heat insulating shell 252 and the air outlet.

In one instance, the air inlet duct 210 , the first ventilation duct 220 and the air outlet duct 230 are integrally formed.

In one example, the air inlet duct 210 , the first ventilation duct 220 , the air outlet duct 230 , the first air outlet duct 231 and the second air outlet duct 232 are integrally formed.

In one example, as shown in FIG. 1 or FIG. 2 or FIG. 4 , the casing 100 is provided with a first air outlet and a second air outlet. A first cover plate 131 is arranged in the first air outlet, and a second cover plate 132 is arranged in the second air outlet. The air inlet duct 210 , the first ventilation duct 220 and the air outlet duct 230 are arranged in the casing 100 , and the first cover plate 131 is respectively connected to the casing 100 and the first air outlet duct 231 to fix the first air outlet duct 231 At the end position, the second cover plate 132 is respectively connected to the housing 100 and the second air outlet duct 232 to fix the position of the end of the second air outlet duct 232 . The housing 100 is also provided with an air intake grill 110, so that the air intake duct 210 can suck in air from the outside.

In one instance, as shown in FIG. 4 , the first covering plate 131 is used to fix the position of the end of the first air outlet duct 231 in the first air outlet hole. The second cover plate 132 is used to fix the position of the end of the second air outlet duct 232 in the second air outlet hole.

In one embodiment, as shown in FIG. 1 , the air inlet duct 210 is provided with a trumpet-shaped air inlet 211 . The flared air inlet 211 communicates with the air inlet grill 110 .

In one of the embodiments, as shown in FIG. 1 or FIG. 2 , a filter screen 120 is further included. The filter screen 120 is arranged between the air inlet 211 and the air inlet grill 110 .

In one embodiment, the first air outlet duct 231 is further provided with a first valve (not shown in the figure) for controlling the flow or blocking of the first air outlet duct 231 .

In one embodiment, the second air outlet duct 232 is further provided with a second valve (not shown in the figure) for controlling the flow or blocking of the second air outlet duct 232 .

In one of the embodiments, at least one of the first valve (not shown in the figure) and the second valve (not shown in the figure) is in an open flow state. With this setting, when a stronger wind speed is required, in addition to adjusting the gear of the fan 300 (increasing the speed and power), the valve of one of the air outlet channels can also be closed to increase the air volume and flow rate of the other air outlet channel. , reduce the time of high-power operation of the foot dryer and save energy.

In one embodiment, as shown in FIG. 4 , the housing 100 is further provided with a projection indicator light 140 . The projection indicator light 140 is used to project the light signal indicating the working state of the foot dryer to the external environment of the foot dryer. Usually, the indicator lights of electrical equipment are installed on or near the buttons, but due to the special working position of the foot dryer, users generally use their feet to switch and trigger and switch functions, and the indicator lights are easily blocked by feet. The solution creatively adopts the projection indicator light 140 and installs it on the outer casing 100 of the foot dryer, so that the light signal in the working state of the foot dryer can be projected to the external environment of the foot dryer, such as on the floor or on the wall Excellent, in this way, users will not have misoperation because they cannot see the change of the indicator light when they use their feet to trigger a function.

In one embodiment, the projection indicator 140 is a picture projector.

In one embodiment, as shown in FIG. 4 , the projection indicator light 140 is arranged on the lower half of the housing 100 so as to be projected on the ground.

In one embodiment, as shown in FIG. 4 , the projection indicator light 140 is arranged on the side of the housing 100 so as to be projected on the ground or on the side wall.

In one embodiment, the light path of the projection indicator light 140 is further provided with a diffusing mirror (not shown in the figure) for dispersing the light projected by the projection indicator light 140 outward.

In one embodiment, a light-transmitting component that can diffuse is provided outside the projection indicator light 140, so as to diffuse the light transmitted by the projection indicator light 140, so that the user can see the change of the machine function in real time.

The silent foot dryer provided above can greatly reduce heat dissipation by placing only a part of the circuit board 500 in the mainstream air flow path, and placing the part on the air inlet side of the fan 300 in the air inlet duct 210 for heat dissipation. The strong friction between the airflow and the circuit board 500 and the electronic components 510 reduces noise.

According to the above content, based on the same inventive concept, the present application also provides another solution for a silent foot dryer.

A silent foot dryer, as shown in FIG. 2 , includes a casing 100 , an air inlet duct 210 , a first ventilation duct 220 and an air outlet duct 230 which are arranged in the casing 100 and communicated in sequence. A fan 300 is arranged in the air inlet duct 210 , and an installation structure (not shown in the figure) for installing the circuit board 500 is also provided on the cylinder wall on the air inlet side of the fan 300 . A heating device 400 is disposed in the first ventilation tube 220 . In this way, the circuit board 500 can be installed in the air inlet duct 210 and located on the air inlet side of the fan 300, which can greatly reduce the severe friction between the airflow and the circuit board 500 and the electronic components 510, and reduce noise.

In one embodiment, as shown in FIG. 1 or FIG. 2 , in the air inlet duct 210 , an electrical hole 212 is opened on the duct wall on the air inlet side of the fan 300 . The electrical holes 212 are used to pass through the circuit board 500 and place a part of the circuit board 500 on the air inlet side of the fan 300 in the air inlet duct 210 to dissipate heat.

In one embodiment, as shown in FIG. 1 or FIG. 2 , the electrical hole 212 is a long hole.

In one embodiment, the circuit board 500 provided with the MOS tube portion is inserted into the electrical hole 212 and placed in the air inlet duct 210 to dissipate heat.

In one embodiment, as shown in FIG. 1 or FIG. 2 , the air inlet 211 of the air inlet duct 210 is trumpet-shaped, so as to reduce the noise generated by the friction between the airflow and the air inlet 211 .

In one embodiment, the air inlet duct 210 , the first ventilation duct 220 and the air outlet duct 230 are integrally formed tubular structures.

In one of the embodiments, as shown in FIG. 6 , a second ventilator 260 is further included. The first ventilator 220 and the air outlet 230 are communicated through the second ventilator 260, and the depth at which the air outlet end of the first ventilator 220 is inserted into the cavity of the second ventilator 260 is the first depth, and the depth of the air outlet 230 is the first depth. The depth at which the air inlet end is inserted into the cavity of the second ventilator 260 is the second depth. The cross section of the second ventilator 260 is larger than that of the first ventilator 220 . The cross section of the second ventilation duct 260 is larger than that of the air outlet duct 230 . In this way, the first ventilator 220 can form an abrupt cross section in the second ventilator 260, and the sound wave is subjected to impedance here. Similarly, the air outlet 230 can also form a sudden change in the second ventilator 260. Therefore, the first ventilator 220 and the air outlet 230 are communicated through the second ventilator 260, and the cross section of the second ventilator 260 is larger than the cross section of the first ventilator 220 and larger than the cross section of the air outlet 230. The cross section can effectively block part of the sound waves from the first ventilator 220 into the air outlet 230 and outgoing, and can effectively reduce noise.

In one of the embodiments, as shown in FIG. 6 or FIG. 7 , the sum of the first depth and the second depth is less than the length of the cavity of the second ventilator 260 , that is, the total length of the first depth plus the second depth It is less than the length of the cavity of the second ventilator 260 . This arrangement can effectively reduce noise while reducing process loss.

In one embodiment, as shown in FIG. 6 or FIG. 7 , the axes of the first ventilation duct 220 and the air outlet duct 230 are coincident.

In one embodiment, as shown in FIG. 7 , the first depth is 1/4 of the length of the cavity of the second ventilator 260 , and the second depth is 1/2 of the length of the cavity of the second ventilator 260 , or (not shown in the figure) the first depth is 1/2 of the length of the cavity of the second ventilator 260 , and the second depth is 1/4 of the length of the cavity of the second ventilator 260 . That is, the air outlet end of the first ventilation tube 220 is inserted into the second ventilation tube 260, and the insertion depth is 1/4 of the axial length of the second ventilation tube 260, and the air inlet end of the air outlet tube 230 is inserted into the second ventilation tube 260. , and the insertion depth is 1/2 of the axial length of the second ventilator 260, or the outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260. 2. The air inlet end of the air outlet duct 230 is inserted into the second ventilation duct 260 , and the insertion depth is 1/4 of the axial length of the second ventilation duct 260 . Since the noise frequency range of passing air fluid is generally relatively wide, when the air outlet end of the first ventilator 220 is inserted into 1/2 of the axial length of the second ventilator 260, the part of the noise with an odd multiple of the passing frequency can be well eliminated. , when the air outlet end of the first ventilator 220 is inserted into 1/4 of the axial length of the second ventilator 260, the part of the even-numbered pass frequency in the noise can be well eliminated. When the wind end is inserted into 1/2 of the axial length of the second ventilator 260, the part of the odd-numbered pass frequency in the noise can be well eliminated. When 1/4, the part of the even-numbered passing frequency in the noise can be well eliminated. Therefore, the air outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is the axial length of the second ventilator 260. 1/4, the air inlet end of the air outlet duct 230 is inserted into the second air duct 260, and the insertion depth is 1/2 of the axial length of the second air duct 260, or the air outlet end of the first air duct 220 is inserted into the second air duct 260. Inside the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260, and the air inlet end of the air outlet duct 230 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260. 1/4, which can effectively eliminate the noise of integer times of passing frequency in the air fluid.

In one embodiment, the first depth is between 1/4 and 1/2 of the length of the cavity of the second ventilator 260 , and the second depth is 1/4 of the length of the cavity of the second ventilator 260 to 1/2.

In one instance, as shown in FIG. 5 , the bottom of the casing 100 is provided with an anti-skid foot pad 150 . The anti-skid foot pad 150 is an elastic foot pad, or is elastically connected with the housing 100 . This arrangement, on the one hand, makes the foot dryer more stable when it is placed on the ground, and prevents the foot dryer from moving due to the reaction force of the blower during operation, and on the other hand, it is easier to level and balance the foot dryer when it is placed on the ground. And attached to the ground, thereby reducing the noise caused by the vibration of the dryer itself.

In one instance, as shown in FIG. 5 , the bottom of the casing 100 is provided with an anti-skid foot pad 150 . A damping member (not shown in the figure) is arranged between the anti-skid foot pad 150 and the housing 100 for converting the kinetic energy of the vibration of the foot dryer into internal energy during operation. In this embodiment, the damping member can quickly absorb the kinetic energy of the foot dryer when it vibrates, reduce the vibration amplitude and frequency of the foot dryer, and further reduce the noise generated by the vibration of the foot dryer itself. Improve service life.

In one embodiment, the anti-skid foot pad 150 is a hollow elastic rubber pad (not shown in the figure), or a rubber pad with several air bubbles (not shown in the figure) disposed inside.

In the silent foot dryer provided above, the circuit board 500 is installed by arranging an installation structure for installing the circuit board 500 on the cylinder wall located on the air inlet side of the fan 300 . The circuit board 500 can be installed in the air inlet duct 210 and located on the air inlet side of the fan 300, which can greatly reduce the severe friction between the airflow and the circuit board 500 and the electronic components 510, and reduce noise.

In addition, the present application also provides a dual-air duct foot dryer, as shown in FIG. 8 , comprising an air inlet duct 210 , a first ventilator 220 and a third air outlet duct 271 connected in sequence to form a first air duct, and an air inlet duct 210 The air duct 210 , the first air duct 220 and the fourth air outlet duct 272 are connected in sequence to form a second air duct. It also includes a first air outlet 240 communicating with the third air outlet duct 271, and the first air outlet 240 and the third air outlet duct 271 are connected by a universal rotation mechanism, so as to facilitate the adjustment of the first air outlet 240 wind direction. It also includes a second air outlet 250 communicated with the fourth air outlet duct 272, and the second air outlet 250 and the fourth air outlet duct 272 are connected by a universal rotation mechanism, so as to facilitate the adjustment of the second air outlet 250 wind direction. A fan 300 is arranged in the air inlet duct 210 . A heating device 400 is disposed in the first ventilation tube 220 . With this arrangement, on the one hand, when the main body of the foot dryer is fixed, the air outlet direction can be freely changed by rotating the angles of the first air outlet 240 and the second air outlet 250 . On the other hand, under the same configuration, the air outlet speed of the foot dryer can be increased, the relative humidity of the air outlet can be reduced, and the efficiency of drying the feet can be improved. feet, reduce the ineffective air volume and reduce energy consumption. In addition, the foot dryer does not need to be in contact with the feet when drying the feet, which can effectively avoid cross-infection and the breeding of foot bacteria in the home environment.

In one of the embodiments, as shown in FIG. 8 , a second ventilator 260 is further included. The first ventilator 220 is communicated with the third air outlet duct 271 and the fourth air outlet duct 272 through the second ventilator 260, and the air outlet end of the first ventilator 220 is inserted into the cavity of the second ventilator 260 to a depth of For the first depth, the depth at which the air inlet end of the third air outlet duct 271 is inserted into the cylindrical cavity of the second ventilator 260 is the third depth. The depth at which the air inlet end of the fourth air outlet duct 272 is inserted into the cavity of the second ventilator 260 is the fourth depth. The cross section of the second ventilator 260 is larger than that of the first ventilator 220 . The cross section of the second ventilator 260 is larger than the cross section of the third air outlet duct 271 and is larger than the cross section of the fourth air outlet duct 272 . In this way, the first ventilator 220 can form an abrupt cross section in the second ventilator 260 , and the sound wave is resisted here. A sudden change of section can be formed, and acoustic impedance can also be formed. Therefore, the first ventilator 220 is communicated with the third air outlet duct 271 and the fourth air outlet duct 272 through the second ventilator 260, and the transverse direction of the second ventilator 260 is connected. The cross section is larger than the cross section of the first ventilator 220 and larger than the cross sections of the third air outlet duct 271 and the fourth air outlet duct 272, which can effectively block part of the sound wave from the first ventilator 220 into the third air outlet duct 271 and the fourth air outlet duct 271 and the fourth air outlet duct 272. The air is transmitted through the air outlet duct 272, which can effectively reduce noise.

In one of the embodiments, as shown in FIG. 8 or FIG. 9 , the sum of the first depth and the third depth is less than the length of the cavity of the second ventilator 260 , and the sum of the first depth and the fourth depth is less than the second depth The length of the cavity of the ventilator 260 , that is, the total length of the first depth plus the third depth, and the total length of the first depth plus the fourth depth are all smaller than the length of the cavity of the second ventilator 260 . This arrangement can effectively reduce noise while reducing process loss.

In one embodiment, as shown in FIG. 9 , the first depth is 1/4 of the length of the cavity of the second ventilator 260 , and the third depth is 1/2 of the length of the cavity of the second ventilator 260 , the fourth depth is 1/2 of the length of the cavity of the second ventilator 260, or, (not shown in the figure) the first depth is 1/2 of the length of the cavity of the second ventilator 260, and the third The depth is 1/4 of the length of the cavity of the second ventilator 260 , and the fourth depth is 1/4 of the length of the cavity of the second ventilator 260 . That is, the air outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is 1/4 of the axial length of the second ventilator 260, and the air inlet end of the third air outlet duct 271 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260, the air inlet end of the fourth air outlet duct 272 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260. /2, or, the air outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260, and the air inlet end of the third air outlet duct 271 is inserted into the second ventilator 260. Inside the second ventilator 260, and the insertion depth is 1/4 of the axial length of the second ventilator 260, the air inlet end of the fourth air outlet duct 272 is inserted into the second ventilator 260, and the insertion depth is the axis of the second ventilator 260 1/4 of the length. Since the noise frequency range of passing air fluid is generally relatively wide, when the air outlet end of the first ventilator 220 is inserted into 1/2 of the axial length of the second ventilator 260, the part of the noise with an odd multiple of the passing frequency can be well eliminated. , when the outlet end of the first ventilator 220 is inserted into 1/4 of the axial length of the second ventilator 260, the part of the even-numbered pass frequency in the noise can be well eliminated. Similarly, when the third air outlet duct 271 Or when the air inlet end of the fourth air outlet duct 272 is inserted into 1/2 of the axial length of the second ventilator 260, the part of the odd-numbered pass frequency in the noise can be well eliminated. When the air inlet end of the air outlet duct 272 is inserted into 1/4 of the axial length of the second ventilator 260, the part of the even-numbered passing frequency of the noise can be well eliminated. Therefore, the air outlet end of the first ventilator 220 is inserted In the second ventilator 260, and the insertion depth is 1/4 of the axial length of the second ventilator 260, the air inlet ends of the third air outlet duct 271 and the fourth air outlet duct 272 are inserted into the second ventilator 260 and inserted into the second ventilator 260. The depth is 1/2 of the axial length of the second ventilator 260, or, the air outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260. The air inlet end of the third air outlet duct 271 or the fourth air outlet duct 272 is inserted into the second ventilator 260, and the insertion depth is 1/4 of the axial length of the second ventilator 260, which can effectively eliminate the integral multiple pass frequency in the air fluid. noise.

In one embodiment, the first depth is between 1/4 and 1/2 of the length of the cavity of the second ventilator 260 , and the third depth is 1/4 of the length of the cavity of the second ventilator 260 The fourth depth is between 1/4 and 1/2 of the length of the cavity of the second ventilator 260 .

In one embodiment, the third air outlet duct 271 and the fourth air outlet duct 272 communicate with each other through several bypass pipes (not shown in the figure). The lengths and diameters of several bypass pipes (not shown in the figure) are suitable so that the inner air column can resonate with the sound waves in the third air outlet duct 271 and the fourth air outlet duct 272 .

In one of the embodiments, (not shown) the third depth is greater or less than the fourth depth.

In one embodiment, the first ventilation pipe is communicated with the third air outlet duct 271 and the fourth air outlet duct 272 through a "herringbone"-shaped ventilation pipe (not shown in the figure) in the cavity of the second ventilation pipe. The wall of the ventilation pipe (not shown in the figure) is provided with several ventilation holes.

In one instance, as shown in FIG. 8 , the first air outlet 240 and the second air outlet 250 are arranged symmetrically.

In one example, the first air outlet 240 and the second air outlet 250 are both elliptical air outlets (not shown in the figure), so that when the blown air reaches the feet, it is more suitable for the feet. Long block shape.

In one example, as shown in FIG. 8 , the third air outlet duct 271 and the fourth air outlet duct 272 are arranged symmetrically, so that the airflow circulation environment of the two air outlet ducts is as equal as possible.

In one embodiment, as shown in FIG. 8 , the third air outlet duct 271 is provided with a first ball bearing seat 233 , the first air outlet 240 is provided with a first ball head 281 shell 241 , and the first ball head 281 shell 241 cooperates with the first ball bearing seat 233 to form a ball hinge rotation mechanism, that is, the universal rotation mechanism between the first air outlet 240 and the third air outlet duct 271 is the first ball head 281 The shell 241 and the first ball bearing seat 233 is matched to form a ball hinge rotating mechanism.

In one embodiment, as shown in FIG. 8 , the fourth air outlet duct 272 is provided with a second ball bearing seat 234 , the second air outlet 250 is provided with a second ball head 291 shell 251 , and the second ball head 291 shell 251 and the second ball bearing seat 234 cooperate to form a ball hinge rotation mechanism, that is, the universal rotation mechanism between the second air outlet 250 and the fourth air outlet duct 272 is the second ball head 291. Shell 251 and the second ball bearing seat 234 is matched to form a ball hinge rotating mechanism.

In one instance, as shown in FIG. 8 , a housing 100 is also included. The casing 100 is provided with a first air outlet and a second air outlet. A first cover plate 131 is arranged in the first air outlet, and a second cover plate 132 is arranged in the second air outlet. The air inlet duct 210 , the first ventilation duct 220 , the third air outlet duct 271 and the fourth air outlet duct 272 are arranged in the casing 100 , and the first cover plate 131 is connected to the casing 100 and the third air outlet duct 271 respectively. , to fix the position of the end of the third air outlet duct 271 , and the second cover plate 132 is respectively connected to the housing 100 and the fourth air outlet duct 272 to fix the position of the end of the fourth air outlet duct 272 . The housing 100 is also provided with an air intake grill 110, so that the air intake duct 210 can suck in air from the outside.

In one instance, as shown in FIG. 8 , the first covering plate 131 is used to fix the position of the end of the third air outlet duct 271 in the first air outlet hole. The second cover plate 132 is used to fix the position of the end of the fourth air outlet duct 272 in the second air outlet hole.

In one embodiment, as shown in FIG. 5 , the bottom of the housing 100 is further provided with a non-slip foot pad 150 . In order to make the foot dryer more stable when placed on the ground. Prevent the foot dryer from moving due to the reaction force of the air blowing during operation.

In one embodiment, the anti-skid foot pad 150 is an elastic foot pad, or is elastically connected with the housing 100 . This makes it easier to level, balance and attach to the ground when the foot dryer is placed on the ground.

In one embodiment, a damping member (not shown in the figure) is arranged between the anti-skid foot pad 150 and the housing 100, which is used to convert the kinetic energy of the vibration of the foot dryer into internal energy, so as to reduce the impact of the foot dryer. Vibration amplitude and vibration frequency, reduce noise and improve service life.

In one embodiment, the anti-skid foot pad 150 is a hollow elastic rubber pad, or a rubber pad with several air bubbles arranged inside.

In one of the embodiments, as shown in FIG. 8 , the air inlet duct 210 is provided with a trumpet-shaped air inlet 211 . The flared air inlet 211 communicates with the air inlet grill 110 .

In one of the embodiments, as shown in FIG. 8 , a filter screen 120 is also included. The filter screen 120 is arranged between the air inlet 211 and the air inlet grill 110 .

In one embodiment, the third air outlet duct 271 is further provided with a first valve (not shown in the figure) for controlling the flow or blocking of the third air outlet duct 271 .

In one embodiment, the fourth air outlet duct 272 is further provided with a second valve (not shown in the figure) for controlling the flow or blocking of the fourth air outlet duct 272 .

In one of the embodiments, at least one of the first valve (not shown in the figure) and the second valve (not shown in the figure) is in an open flow state. With this setting, when a stronger wind speed is required, in addition to adjusting the gear of the fan 300 (increasing the speed and power), the valve of one of the air outlet channels can also be closed to increase the air volume and flow rate of the other air outlet channel. , reduce the time of high-power operation of the foot dryer and save energy.

In one embodiment, as shown in FIG. 4 , the housing 100 is further provided with a projection indicator light 140 . The projection indicator light 140 is used to project the light signal indicating the working state of the foot dryer to the external environment of the foot dryer. Usually, the indicator lights of electrical equipment are installed on or near the buttons, but due to the special working position of the foot dryer, users generally use their feet to switch and trigger and switch functions, and the indicator lights are easily blocked by feet. The solution creatively adopts the projection indicator light 140 and installs it on the outer casing 100 of the foot dryer, so that the light signal in the working state of the foot dryer can be projected to the external environment of the foot dryer, such as on the floor or on the wall Excellent, in this way, users will not have misoperation because they cannot see the change of the indicator light when they use their feet to trigger a function.

In one embodiment, the projection indicator 140 is a picture projector.

In one embodiment, as shown in FIG. 4 , the projection indicator light 140 is arranged on the lower half of the housing 100 so as to be projected on the ground.

In one embodiment, as shown in FIG. 4 , the projection indicator light 140 is arranged on the side of the housing 100 so as to be projected on the ground or on the side wall.

In one embodiment, the light path of the projection indicator light 140 is further provided with a diffusing mirror (not shown in the figure) for dispersing the light projected by the projection indicator light 140 outward.

In one embodiment, a light-transmitting component (not shown in the figure) that can be scattered is provided outside the projection indicator light 140 to diffuse the light transmitted by the projection indicator light 140, so that the user can see the change of the machine function in real time.

In one of the embodiments, as shown in FIG. 8 , an electrical hole 212 is formed on the wall of the air inlet duct 210 . The electrical holes 212 are used to pass through the circuit board 500 and place the electronic components 510 on the circuit board 500 in the air inlet duct 210 to dissipate heat.

In one embodiment, as shown in FIG. 8 , the electrical hole 212 is opened on the wall between the air inlet end of the fan 300 and the air inlet end of the air inlet duct 210 to contact the fresh air flowing in from the outside, so as to It is conducive to cooling, and at the same time, the air flow rate flowing through the electronic components 510 can be reduced, and the noise can be reduced.

In one embodiment, as shown in FIG. 8 , the electrical hole 212 is a long hole.

In one embodiment, as shown in FIG. 2 , a circuit board 500 is further disposed in the foot dryer. Electronic components 510 with rated power greater than Q1 are arranged in the first area on the circuit board 500 , and components with rated power less than or equal to Q1 are arranged in the second area. The first area on the circuit board 500 is placed in the air inlet duct 210 through the electrical hole 212 .

In one embodiment, as shown in FIG. 3 , an air interlayer is provided in the side wall of the first air outlet 240 and/or the second air outlet 250 . That is, the first air outlet 240 and/or the second air outlet 250 are of a casing type structure, the side wall is composed of two layers of wall shells, and an air interlayer is formed between the two layers of wall shells.

In one embodiment, as shown in FIG. 3 , the outer side walls of the first air outlet 240 and/or the second air outlet 250 are provided with an air outlet heat insulating shell 252 . The inner side wall of the air outlet heat insulating shell 252 is provided with a plurality of supporting ribs, so that a plurality of insulating air cavities are formed between the air outlet heat insulating shell 252 and the air outlet.

The above-mentioned dual-air duct silent foot dryer is configured to include an air inlet duct 210, a first ventilator 220 and a third air outlet duct 271 in order to form a first air duct, and the air inlet duct 210, the first ventilation duct 210, and the first ventilation duct 271. The tube 220 and the fourth air outlet duct 272 are connected in sequence to form a second air duct. The first air outlet 240 is arranged to communicate with the third air outlet duct 271, and the first air outlet 240 and the third air outlet duct 271 are connected by a universal rotation mechanism, and the second air outlet 250 and the fourth air outlet are arranged. The air outlet duct 272 is connected, and the second air outlet 250 and the fourth air outlet duct 272 are connected by a universal rotation mechanism. With this arrangement, on the one hand, when the main body of the foot dryer is fixed, the first outlet can be rotated. The angles of the air nozzle 240 and the second air outlet 250 can freely change the air outlet direction, and can have two different air outlet directions at the same time. On the other hand, under the same configuration, the air outlet speed of the foot dryer can be increased, the relative humidity of the air outlet can be reduced, and the efficiency of drying the feet can be improved. feet, reduce the ineffective air volume and reduce energy consumption. In addition, the foot dryer does not need to be in contact with the feet when drying the feet, which can effectively avoid cross-infection and the breeding of foot bacteria in the home environment.

In addition, the present application also provides a foot dryer that facilitates heat dissipation of electronic components with high heat generation, as shown in FIG. 2 , including an air intake duct 210 and a circuit board 500 . An electrical hole 212 (as shown in FIG. 1 ) is opened on the wall of the air inlet duct 210 . The electrical holes 212 are used to pass through the circuit board 500 and place the electronic components 510 on the circuit board 500 in the air inlet duct 210 to dissipate heat. The first area of the circuit board 500 is provided with electronic components 510 whose rated power is greater than Q1, and the second area is provided with components whose rated power is less than or equal to Q1. The first area on the circuit board 500 is placed in the air inlet duct 210 through the electrical hole 212 .

In one embodiment, as shown in FIG. 2 , a fan 300 is provided in the air inlet duct 210 . The electrical hole 212 is opened on the cylinder wall between the air inlet end of the fan 300 and the air inlet end of the air inlet cylinder 210, so that the electronic components 510 on the circuit board 500 are the first to contact the fresh air flowing in from the outside, so as to facilitate cooling , and at the same time, the air flow rate flowing through the electronic components 510 can be reduced, and the noise can be reduced.

In one embodiment, as shown in FIG. 1 , the electrical hole 212 is a long hole.

The foot dryer provided above, by opening the electrical hole 212 on the wall of the air inlet duct 210, and inserting the first area where the electronic components 510 with a rated power greater than Q1 are arranged into the electrical hole 212, so that the rated power is greater than Q1. The electronic components 510 are placed upstream of the air flow path, so as to be the first to contact the fresh air flowing in from the outside, so as to facilitate cooling, and at the same time reduce the air flow rate flowing through the electronic components 510 and reduce the friction between the air and the electronic components. generated noise.

According to the above content, the present application also provides another design solution of a foot dryer.

A foot dryer, as shown in FIG. 10 , includes an air inlet duct 210 , a first ventilation duct 220 and an air outlet duct 230 that are connected in sequence. The air outlet duct 230 is provided with a first air outlet duct 231 and a second air outlet duct 232 . Referring to FIGS. 11 and 12 , a third ball bearing seat 273 is provided in the first air outlet duct 231 , and the third ball bearing seat 273 is connected to the inner wall of the first air outlet duct 231 through a plurality of first support partitions 235 , The first support baffle 235 is axially disposed along the first air outlet duct 231 , so that several air outlet passages are formed between the third ball bearing seat 273 and the inner wall of the first air outlet duct 231 . As shown in FIG. 11 and FIG. 12 , the second air outlet duct 232 is provided with a fourth ball bearing seat 274 , and the fourth ball bearing seat 274 is connected to the inner wall of the first air outlet duct 231 through a plurality of second support partitions 236 . The second support baffle 236 is axially disposed along the second air outlet duct 232 , so that several air outlet passages are formed between the third ball bearing seat 273 and the inner wall of the first air outlet duct 231 . As shown in FIG. 10 or FIG. 11 , a first guiding body 280 and a second guiding body 290 are further included. The first guide body 280 is provided with a first ball head 281, and the first ball head 281 cooperates with the third ball bearing seat 273 to form a ball hinge rotation mechanism. The second guide body 290 is provided with a second ball head 291, and the second ball head 291 cooperates with the fourth ball bearing seat 274 to form a ball hinge rotation mechanism. A first annular air outlet slit (not shown in the figure) is formed at the air outlet of the first air guiding body 280 and the first air outlet duct 231, and the first guiding body 280 is used to remove the air from the first annular air outlet gap through the Coanda effect. The ejected high-speed airflow is directed to the direction of the air outlet, and further reduces the relative humidity of the air outlet and improves the drying effect. A second annular air outlet gap is formed between the second air guide body 290 and the air outlet of the second air outlet duct 232 , and the second air guide body 290 is used to guide the high-speed airflow emitted from the second annular air outlet gap to the air outlet through the Coanda effect. direction, and further reduce the relative humidity of the outlet air to improve the drying effect. A fan 300 is arranged in the air inlet duct 210 . A heating device 400 is disposed in the first ventilation tube 220 .

In one of the embodiments, as shown in FIG. 10 , a second ventilator 260 is further included. The first ventilator 220 and the air outlet 230 are communicated through the second ventilator 260, and the depth at which the air outlet end of the first ventilator 220 is inserted into the cavity of the second ventilator 260 is the first depth, and the depth of the air outlet 230 is the first depth. The depth at which the air inlet end is inserted into the cavity of the second ventilator 260 is the second depth. The cross section of the second ventilator 260 is larger than that of the first ventilator 220 . The cross section of the second ventilation duct 260 is larger than that of the air outlet duct 230 . In this way, the first ventilator 220 can form an abrupt cross section in the second ventilator 260, and the sound wave is subjected to impedance here. Similarly, the air outlet 230 can also form a sudden change in the second ventilator 260. Therefore, the first ventilator 220 and the air outlet 230 are communicated through the second ventilator 260, and the cross section of the second ventilator 260 is larger than the cross section of the first ventilator 220 and larger than the cross section of the air outlet 230. The cross section can effectively block part of the sound waves from the first ventilator 220 into the air outlet 230 and outgoing, and can effectively reduce noise.

In one of the embodiments, as shown in FIG. 10 , the sum of the first depth and the second depth is less than the length of the cavity of the second ventilator 260 , that is, the total length of the first depth plus the second depth is less than the second depth The length of the cylinder cavity of the ventilator 260. This arrangement can effectively reduce noise while reducing process loss.

In one embodiment, as shown in FIG. 10 , the axes of the first ventilation duct 220 and the air outlet duct 230 are coincident.

In one embodiment, as shown in FIG. 7 , the first depth is 1/4 of the length of the cavity of the second ventilator 260 , and the second depth is 1/2 of the length of the cavity of the second ventilator 260 , or (not shown in the figure) the first depth is 1/2 of the length of the cavity of the second ventilator 260 , and the second depth is 1/4 of the length of the cavity of the second ventilator 260 . That is, the air outlet end of the first ventilation tube 220 is inserted into the second ventilation tube 260, and the insertion depth is 1/4 of the axial length of the second ventilation tube 260, and the air inlet end of the air outlet tube 230 is inserted into the second ventilation tube 260. , and the insertion depth is 1/2 of the axial length of the second ventilator 260, or the outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260. 2. The air inlet end of the air outlet duct 230 is inserted into the second ventilation duct 260 , and the insertion depth is 1/4 of the axial length of the second ventilation duct 260 . Since the noise frequency range of passing air fluid is generally relatively wide, when the air outlet end of the first ventilator 220 is inserted into 1/2 of the axial length of the second ventilator 260, the part of the noise with an odd multiple of the passing frequency can be well eliminated. , when the air outlet end of the first ventilator 220 is inserted into 1/4 of the axial length of the second ventilator 260, the part of the even-numbered pass frequency in the noise can be well eliminated. When the wind end is inserted into 1/2 of the axial length of the second ventilator 260, the part of the odd-numbered pass frequency in the noise can be well eliminated. When 1/4, the part of the even-numbered passing frequency in the noise can be well eliminated. Therefore, the air outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is the axial length of the second ventilator 260. 1/4, the air inlet end of the air outlet duct 230 is inserted into the second air duct 260, and the insertion depth is 1/2 of the axial length of the second air duct 260, or the air outlet end of the first air duct 220 is inserted into the second air duct 260. Inside the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260, and the air inlet end of the air outlet duct 230 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260. 1/4, which can effectively eliminate the noise of integer times of passing frequency in the air fluid.

In one embodiment, the first depth is between 1/4 and 1/2 of the length of the cavity of the second ventilator 260 , and the second depth is 1/4 of the length of the cavity of the second ventilator 260 to 1/2.

In one instance, as shown in FIG. 10 , the first guiding body 280 and the second guiding body 290 are arranged symmetrically.

In one case, the first annular air outlet slot and the second annular air outlet slot are both elliptical air outlets (not shown in the figure), so that when the blown air reaches the feet, it is more suitable for the feet. Long block shape.

In one case, the air outlet ends of the first guiding body 280 and the second guiding body 290 are elliptical air outlets (not shown in the figure), which facilitates the blown air to fit the feet better when the wind blows onto the feet. long block shape.

In one example, as shown in FIG. 10 , the first air outlet duct 231 and the second air outlet duct 232 are arranged symmetrically, so that the air flow environment of the two air outlet ducts is as same as possible.

In one instance, the air inlet duct 210 , the first ventilation duct 220 and the air outlet duct 230 are integrally formed.

In one example, the air inlet duct 210 , the first ventilation duct 220 , the air outlet duct 230 , the first air outlet duct 231 and the second air outlet duct 232 are integrally formed.

In one instance, as shown in FIG. 10 , a housing 100 is also included. The casing 100 is provided with a first air outlet and a second air outlet. A first cover plate 131 is arranged in the first air outlet, and a second cover plate 132 is arranged in the second air outlet. The air inlet duct 210 , the first ventilation duct 220 and the air outlet duct 230 are arranged in the casing 100 , and the first cover plate 131 is respectively connected to the casing 100 and the first air outlet duct 231 to fix the first air outlet duct 231 At the end position, the second cover plate 132 is respectively connected to the housing 100 and the second air outlet duct 232 to fix the position of the end of the second air outlet duct 232 . The housing 100 is also provided with an air intake grill 110, so that the air intake duct 210 can suck in air from the outside.

In one instance, as shown in FIG. 10 or FIG. 4 , the first cover plate 131 is used to fix the position of the end of the first air outlet duct 231 in the first air outlet hole. The second cover plate 132 is used to fix the position of the end of the second air outlet duct 232 in the second air outlet hole.

In one embodiment, as shown in FIG. 5 , the bottom of the housing 100 is further provided with a non-slip foot pad 150 . In order to make the foot dryer more stable when placed on the ground. Prevent the foot dryer from moving due to the reaction force of the air blowing during operation.

In one embodiment, the anti-skid foot pad 150 is an elastic foot pad, or is elastically connected with the housing 100 . This makes it easier to level, balance and attach to the ground when the foot dryer is placed on the ground.

In one embodiment, a damping member (not shown in the figure) is arranged between the anti-skid foot pad 150 and the housing 100, which is used to convert the kinetic energy of the vibration of the foot dryer into internal energy, so as to reduce the impact of the foot dryer. Vibration amplitude and vibration frequency, reduce noise and improve service life.

In one embodiment, the anti-skid foot pad 150 is a hollow elastic rubber pad, or a rubber pad with several air bubbles arranged inside.

In one of the embodiments, as shown in FIG. 10 , the air inlet duct 210 is provided with a trumpet-shaped air inlet 211 . The flared air inlet 211 communicates with the air inlet grill 110 .

In one of the embodiments, as shown in FIG. 10 , a filter screen 120 is also included. The filter screen 120 is arranged between the air inlet 211 and the air inlet grill 110 .

In one embodiment, the first air outlet duct 231 is further provided with a first valve (not shown in the figure) for controlling the flow or blocking of the first air outlet duct 231 .

In one embodiment, the second air outlet duct 232 is further provided with a second valve (not shown in the figure) for controlling the flow or blocking of the second air outlet duct 232 .

In one of the embodiments, at least one of the first valve (not shown in the figure) and the second valve (not shown in the figure) is in an open flow state. With this setting, when a stronger wind speed is required, in addition to adjusting the gear of the fan 300 (increasing the speed and power), the valve of one of the air outlet channels can also be closed to increase the air volume and flow rate of the other air outlet channel. , reduce the time of high-power operation of the foot dryer and save energy.

In one embodiment, the housing 100 is further provided with a projection indicator light 140 . The projection indicator light 140 is used to project the light signal indicating the working state of the foot dryer to the external environment of the foot dryer. Usually, the indicator lights of electrical equipment are installed on or near the buttons, but due to the special working position of the foot dryer, users generally use their feet to switch and trigger and switch functions, and the indicator lights are easily blocked by feet. The solution creatively adopts the projection indicator light 140 and installs it on the outer casing 100 of the foot dryer, so that the light signal in the working state of the foot dryer can be projected to the external environment of the foot dryer, such as on the floor or on the wall Excellent, in this way, users will not have misoperation because they cannot see the change of the indicator light when they use their feet to trigger a function.

In one embodiment, the projection indicator 140 is a picture projector.

In one embodiment, the projection indicator light 140 is arranged on the lower half of the housing 100 so as to be projected on the ground.

In one of the embodiments, the projection indicator light 140 is arranged on the side of the housing 100 so as to be projected on the ground or a side wall.

In one embodiment, the light path of the projection indicator light 140 is further provided with a diffusing mirror (not shown in the figure) for dispersing the light projected by the projection indicator light 140 outward.

In one embodiment, a light-transmitting component that can diffuse is provided outside the projection indicator light 140, so as to diffuse the light transmitted by the projection indicator light 140, so that the user can see the change of the machine function in real time.

In one of the embodiments, as shown in FIG. 10 , an electrical hole 212 is opened on the wall of the air inlet duct 210 . The electrical holes 212 are used to pass through the circuit board 500 and place the electronic components 510 on the circuit board 500 in the air inlet duct 210 to dissipate heat.

In one embodiment, as shown in FIG. 10 , the electrical hole 212 is opened on the wall between the air inlet end of the fan 300 and the air inlet end of the air inlet duct 210 , so as to facilitate the electronic components on the circuit board 500 The 510 is the first to contact the fresh air flowing in from the outside to facilitate cooling, and at the same time, it can reduce the air flow rate flowing through the heating element and reduce noise.

In one embodiment, as shown in FIG. 10 , the electrical hole 212 is a long hole.

In one of the embodiments, a circuit board 500 is further disposed in the foot dryer. Electronic components 510 with rated power greater than Q1 are arranged in the first area on the circuit board 500 , and components with rated power less than or equal to Q1 are arranged in the second area. The first area on the circuit board 500 is placed in the air inlet duct 210 through the electrical hole 212 .

In one embodiment, an air interlayer is provided in the side wall of the first air outlet 240 and/or the second air outlet 250 . That is, the first air outlet 240 and/or the second air outlet 250 are of a casing type structure, the side wall is composed of two layers of wall shells, and an air interlayer is formed between the two layers of wall shells.

In one of the embodiments, the outer side wall of the first air outlet 240 and/or the second air outlet 250 is provided with an air outlet heat insulating shell 252 . The inner side wall of the air outlet heat insulating shell 252 is provided with a plurality of supporting ribs, so that a plurality of insulating air cavities are formed between the air outlet heat insulating shell 252 and the air outlet.

In the above-mentioned foot drying machine, the first air outlet duct 231 and the second air outlet duct 232 are arranged on the air inlet duct 210, the first air duct 220 and the air outlet duct 230 in the air outlet duct 230 which are connected in sequence. A first air guiding body 280 is arranged in the first air outlet duct 231, and a first annular air outlet gap is formed at the air outlet of the first air guiding body 280 and the first air outlet duct 231, and the first guiding body 280 is used to pass the Kangda The effect is to guide the high-speed air flow from the first annular air outlet slot to the air outlet direction. A second air guide body 290 is arranged in the second air outlet duct 232, and the second air guide body 290 and the air outlet of the second air outlet duct 232 are formed. The second annular air outlet slot, the second guide body 290 is used to guide the high-speed air flow emitted from the second annular air outlet slot to the air outlet direction through the Coanda effect. This arrangement, on the one hand, can be used when the main body of the foot dryer is fixed. , by rotating the angle of the first air outlet 240 and the second air outlet 250 to freely change the air outlet direction, and can have two different air outlet directions at the same time. On the other hand, under the same configuration, the air outlet speed of the foot dryer can be increased, the relative humidity of the air outlet can be further reduced, and the efficiency of drying the feet can be improved. Only feet, reduce ineffective air volume and reduce energy consumption. In addition, the foot dryer does not need to be in contact with the feet when drying the feet, which can effectively avoid cross-infection and the breeding of foot bacteria in the home environment.

In addition, the present application also provides a dual-air duct foot dryer, which (not shown in the figure) includes an air inlet duct 210, a first ventilator 220 and a third air outlet duct 271 connected in sequence to form a first air duct, and The air inlet duct 210 , the first ventilation duct 220 and the fourth air outlet duct 272 are connected in sequence to form a second air duct. The third air outlet duct 271 is provided with a third ball bearing seat 273. The third ball bearing seat 273 is connected to the inner wall of the third air outlet duct 271 through a plurality of first support baffles 235. The air outlet duct 271 is axially arranged so that several air outlet channels are formed between the third ball bearing seat 273 and the inner wall of the third air outlet duct 271 . The fourth air outlet duct 272 is provided with a fourth ball bearing seat 274. The fourth ball bearing seat 274 is connected to the inner wall of the third air outlet duct 271 through a plurality of second support baffles 236. The air outlet duct 272 is axially arranged, so that several air outlet channels are formed between the third ball bearing seat 273 and the inner wall of the third air outlet duct 271 . It also includes a first guide body 280 and a second guide body 290 . The first guide body 280 is provided with a first ball head 281, and the first ball head 281 cooperates with the third ball bearing seat 273 to form a ball hinge rotation mechanism. The second guide body 290 is provided with a second ball head 291, and the second ball head 291 cooperates with the fourth ball bearing seat 274 to form a ball hinge rotation mechanism. A first annular air outlet gap is formed at the air outlet of the first air guiding body 280 and the third air outlet duct 271 , and the first guiding body 280 is used to guide the high-speed airflow emitted from the first annular air outlet gap to the air outlet through the Coanda effect. direction, and further reduce the relative humidity of the outlet air to improve the drying effect. A second annular air outlet gap is formed between the second air guide body 290 and the air outlet of the fourth air outlet duct 272 , and the second air guide body 290 is used to guide the high-speed airflow emitted from the second annular air outlet gap to the air outlet through the Coanda effect. direction, and further reduce the relative humidity of the outlet air to improve the drying effect. A fan 300 is arranged in the air inlet duct 210 . A heating device 400 is disposed in the first ventilation tube 220 .

In one of the embodiments, a second ventilator 260 is also included. The first ventilator 220 is communicated with the third air outlet duct 271 and the fourth air outlet duct 272 through the second ventilator 260, and the air outlet end of the first ventilator 220 is inserted into the cavity of the second ventilator 260 to a depth of For the first depth, the depth at which the air inlet end of the third air outlet duct 271 is inserted into the cylindrical cavity of the second ventilator 260 is the third depth. The depth at which the air inlet end of the fourth air outlet duct 272 is inserted into the cavity of the second ventilator 260 is the fourth depth. The cross section of the second ventilator 260 is larger than that of the first ventilator 220 . The cross section of the second ventilator 260 is larger than the cross section of the third air outlet duct 271 and is larger than the cross section of the fourth air outlet duct 272 . In this way, the first ventilator 220 can form an abrupt cross section in the second ventilator 260 , and the sound wave is resisted here. A sudden change of section can be formed, and acoustic impedance can also be formed. Therefore, the first ventilator 220 is communicated with the third air outlet duct 271 and the fourth air outlet duct 272 through the second ventilator 260, and the transverse direction of the second ventilator 260 is connected. The cross section is larger than the cross section of the first ventilator 220 and larger than the cross sections of the third air outlet duct 271 and the fourth air outlet duct 272, which can effectively block part of the sound wave from the first ventilator 220 into the third air outlet duct 271 and the fourth air outlet duct 271 and the fourth air outlet duct 272. The air is transmitted through the air outlet duct 272, which can effectively reduce noise.

In one embodiment, the sum of the first depth and the third depth is less than the length of the cavity of the second ventilator 260 , and the sum of the first depth and the fourth depth is less than the length of the cavity of the second ventilator 260 , that is, the total length of the first depth plus the third depth, and the total length of the first depth plus the fourth depth are both less than the length of the cavity of the second ventilator 260 . This arrangement can effectively reduce noise while reducing process loss.

In one embodiment, the first depth is 1/4 of the length of the cavity of the second ventilator 260, the third depth is 1/2 of the length of the cavity of the second ventilator 260, and the fourth depth is the 1/2 of the length of the cavity of the second ventilator 260, or the first depth is 1/2 of the length of the cavity of the second ventilator 260, and the third depth is 1/2 of the length of the cavity of the second ventilator 260 1/4, and the fourth depth is 1/4 of the length of the cavity of the second ventilator 260 . That is, the air outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is 1/4 of the axial length of the second ventilator 260, and the air inlet end of the third air outlet duct 271 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260, the air inlet end of the fourth air outlet duct 272 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260. /2, or, the air outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260, and the air inlet end of the third air outlet duct 271 is inserted into the second ventilator 260. Inside the second ventilator 260, and the insertion depth is 1/4 of the axial length of the second ventilator 260, the air inlet end of the fourth air outlet duct 272 is inserted into the second ventilator 260, and the insertion depth is the axis of the second ventilator 260 1/4 of the length. Since the noise frequency range of passing air fluid is generally relatively wide, when the air outlet end of the first ventilator 220 is inserted into 1/2 of the axial length of the second ventilator 260, the part of the noise with an odd multiple of the passing frequency can be well eliminated. , when the outlet end of the first ventilator 220 is inserted into 1/4 of the axial length of the second ventilator 260, the part of the even-numbered pass frequency in the noise can be well eliminated. Similarly, when the third air outlet duct 271 Or when the air inlet end of the fourth air outlet duct 272 is inserted into 1/2 of the axial length of the second ventilator 260, the part of the odd-numbered pass frequency in the noise can be well eliminated. When the air inlet end of the air outlet duct 272 is inserted into 1/4 of the axial length of the second ventilator 260, the part of the even-numbered passing frequency of the noise can be well eliminated. Inside the second ventilator 260, and the insertion depth is 1/4 of the axial length of the second ventilator 260, the air inlet ends of the third air outlet duct 271 and the fourth air outlet duct 272 are inserted into the second ventilator 260 and inserted into the second ventilator 260. The depth is 1/2 of the axial length of the second ventilator 260, or, the air outlet end of the first ventilator 220 is inserted into the second ventilator 260, and the insertion depth is 1/2 of the axial length of the second ventilator 260. The air inlet end of the third air outlet duct 271 or the fourth air outlet duct 272 is inserted into the second ventilator 260, and the insertion depth is 1/4 of the axial length of the second ventilator 260, which can effectively eliminate the integral multiple passing frequency in the air fluid. noise.

In one embodiment, the first depth is between 1/4 and 1/2 of the length of the cavity of the second ventilator 260 , and the third depth is 1/4 of the length of the cavity of the second ventilator 260 The fourth depth is between 1/4 and 1/2 of the length of the cavity of the second ventilator 260 .

In one embodiment, the third air outlet duct 271 and the fourth air outlet duct 272 communicate with each other through several bypass pipes (not shown in the figure). The lengths and diameters of several bypass pipes (not shown in the figure) are suitable so that the inner air column can resonate with the sound waves in the third air outlet duct 271 and the fourth air outlet duct 272 .

In one of the embodiments, the third depth is greater or less than the fourth depth.

In one embodiment, the first ventilation pipe is communicated with the third air outlet duct 271 and the fourth air outlet duct 272 through a "herringbone"-shaped ventilation pipe (not shown in the figure) in the cavity of the second ventilation pipe. The wall of the ventilation pipe (not shown in the figure) is provided with several ventilation holes.

In one instance, the first guiding body 280 and the second guiding body 290 are arranged symmetrically.

In one case, the first annular air outlet slot and the second annular air outlet slot are both elliptical air outlets (not shown in the figure), so that when the blown air reaches the feet, it is more suitable for the feet. Long block shape.

In one case, the air outlet ends of the first guiding body 280 and the second guiding body 290 are elliptical air outlets (not shown in the figure), which facilitates the blown air to fit the feet better when the wind blows onto the feet. long block shape.

In one instance, the third air outlet duct 271 and the fourth air outlet duct 272 are symmetrically arranged, so that the airflow circulation environments of the two air outlet ducts are as similar as possible.

In one instance, the air inlet duct 210 , the first ventilation duct 220 and the air outlet duct 230 are integrally formed.

In one example, the air inlet duct 210 , the first ventilation duct 220 , the air outlet duct 230 , the third air outlet duct 271 and the fourth air outlet duct 272 are integrally formed.

In one instance, the housing 100 is also included. The casing 100 is provided with a first air outlet and a second air outlet. A first cover plate 131 is arranged in the first air outlet, and a second cover plate 132 is arranged in the second air outlet. The air inlet duct 210 , the first ventilation duct 220 , the third air outlet duct 271 and the fourth air outlet duct 272 are arranged in the casing 100 , and the first cover plate 131 is connected to the casing 100 and the third air outlet duct 271 respectively. , to fix the position of the end of the third air outlet duct 271 , and the second cover plate 132 is respectively connected to the housing 100 and the fourth air outlet duct 272 to fix the position of the end of the fourth air outlet duct 272 . The housing 100 is also provided with an air intake grill 110, so that the air intake duct 210 can suck in air from the outside.

In one instance, the first cover plate 131 is used to fix the position of the end of the third air outlet duct 271 in the first air outlet hole. The second cover plate 132 is used to fix the position of the end of the fourth air outlet duct 272 in the second air outlet hole.

In one embodiment, the bottom of the casing 100 is further provided with an anti-skid foot pad 150 . In order to make the foot dryer more stable when placed on the ground. Prevent the foot dryer from moving due to the reaction force of the air blowing during operation.

In one embodiment, the anti-skid foot pad 150 is an elastic foot pad, or is elastically connected with the housing 100 . This makes it easier to level, balance and attach to the ground when the foot dryer is placed on the ground.

In one embodiment, a damping member (not shown in the figure) is arranged between the anti-skid foot pad 150 and the housing 100, which is used to convert the kinetic energy of the vibration of the foot dryer into internal energy, so as to reduce the impact of the foot dryer. Vibration amplitude and vibration frequency, reduce noise and improve service life.

In one embodiment, the anti-skid foot pad 150 is a hollow elastic rubber pad, or a rubber pad with several air bubbles arranged inside.

In one of the embodiments, the air inlet duct 210 is provided with a trumpet-shaped air inlet 211 . The flared air inlet 211 communicates with the air inlet grill 110 .

In one of the embodiments, a filter screen 120 is also included. The filter screen 120 is arranged between the air inlet 211 and the air inlet grill 110 .

In one embodiment, the third air outlet duct 271 is further provided with a first valve (not shown in the figure) for controlling the flow or blocking of the third air outlet duct 271 .

In one embodiment, the fourth air outlet duct 272 is further provided with a second valve (not shown in the figure) for controlling the flow or blocking of the fourth air outlet duct 272 .

In one of the embodiments, at least one of the first valve (not shown in the figure) and the second valve (not shown in the figure) is in an open flow state. With this setting, when a stronger wind speed is required, in addition to adjusting the gear of the fan 300 (increasing the speed and power), the valve of one of the air outlet channels can also be closed to increase the air volume and flow rate of the other air outlet channel. , reduce the time of high-power operation of the foot dryer and save energy.

In one embodiment, the housing 100 is further provided with a projection indicator light 140 . The projection indicator light 140 is used to project the light signal indicating the working state of the foot dryer to the external environment of the foot dryer. Usually, the indicator lights of electrical equipment are installed on or near the buttons, but due to the special working position of the foot dryer, users generally use their feet to switch and trigger and switch functions, and the indicator lights are easily blocked by feet. The solution creatively adopts the projection indicator light 140 and installs it on the outer casing 100 of the foot dryer, so that the light signal in the working state of the foot dryer can be projected to the external environment of the foot dryer, such as on the floor or on the wall Excellent, in this way, users will not have misoperation because they cannot see the change of the indicator light when they use their feet to trigger a function.

In one embodiment, the projection indicator 140 is a picture projector.

In one embodiment, the projection indicator light 140 is arranged on the lower half of the housing 100 so as to be projected on the ground.

In one of the embodiments, the projection indicator light 140 is arranged on the side of the housing 100 so as to be projected on the ground or a side wall.

In one embodiment, the light path of the projection indicator light 140 is further provided with a diffusing mirror (not shown in the figure) for dispersing the light projected by the projection indicator light 140 outward.

In one embodiment, a light-transmitting component that can diffuse is provided outside the projection indicator light 140, so as to diffuse the light transmitted by the projection indicator light 140, so that the user can see the change of the machine function in real time.

In one of the embodiments, an electrical hole 212 is formed on the wall of the air inlet duct 210 . The electrical holes 212 are used to pass through the circuit board 500 and place the electronic components 510 on the circuit board 500 in the air inlet duct 210 to dissipate heat.

In one embodiment, the electrical hole 212 is opened on the wall between the air inlet end of the fan 300 and the air inlet end of the air inlet duct 210 to contact the fresh air flowing in from the outside, so as to facilitate cooling and reduce the The air velocity flowing through the heating element reduces noise.

In one embodiment, the electrical hole 212 is a long hole.

In one of the embodiments, a circuit board 500 is further disposed in the foot dryer. Electronic components 510 with rated power greater than Q1 are arranged in the first area on the circuit board 500 , and components with rated power less than or equal to Q1 are arranged in the second area. The first area on the circuit board 500 is placed in the air inlet duct 210 through the electrical hole 212 .

In one embodiment, an air interlayer is provided in the side wall of the first air outlet 240 and/or the second air outlet 250 . That is, the first air outlet 240 and/or the second air outlet 250 are of a casing type structure, the side wall is composed of two layers of wall shells, and an air interlayer is formed between the two layers of wall shells.

In one of the embodiments, the outer side wall of the first air outlet 240 and/or the second air outlet 250 is provided with an air outlet heat insulating shell 252 . The inner side wall of the air outlet heat insulating shell 252 is provided with a plurality of supporting ribs, so that a plurality of insulating air cavities are formed between the air outlet heat insulating shell 252 and the air outlet.

The above-mentioned dual-air duct foot dryer comprises an air inlet duct 210, a first ventilator 220 and a third air outlet duct 271 connected in sequence to form a first air duct, and an air inlet duct 210, a first ventilator duct 220 and the fourth air outlet duct 272 are connected in sequence to form a second air duct. A first air guiding body 280 is arranged in the third air outlet duct 271, and a first annular air outlet gap is formed at the air outlet of the first air guiding body 280 and the third air outlet duct 271, and the first guiding body 280 is used to pass through the Kangda. The effect is to guide the high-speed air flow from the first annular air outlet slot to the air outlet direction. A second guide body 290 is arranged in the fourth air outlet duct 272, and the second guide body 290 and the outlet of the fourth air outlet duct 272 are formed. The second annular air outlet slot, the second guide body 290 is used to guide the high-speed air flow emitted from the second annular air outlet slot to the air outlet direction through the Coanda effect. This arrangement, on the one hand, can be used when the main body of the foot dryer is fixed. , by rotating the angle of the first guiding body 280 and the second guiding body 290 to freely change the air outlet direction, and can have two different air outlet directions at the same time. On the other hand, under the same configuration, the air outlet speed of the foot dryer can be increased, the relative humidity of the air outlet can be further reduced, and the efficiency of drying the feet can be improved. Only feet, reduce ineffective air volume and reduce energy consumption. In addition, the foot dryer does not need to be in contact with the feet when drying the feet, which can effectively avoid cross-infection and the breeding of foot bacteria in the home environment.

The present application also provides another design solution for a foot dryer, including an air inlet duct, a first ventilation duct and an air outlet duct connected in sequence. The air outlet is provided with a third air outlet and a fourth air outlet. It also includes a fifth air outlet duct communicated with the third air outlet, and a sixth air outlet duct communicated with the fourth air outlet. The fifth air outlet duct and the sixth air outlet duct are flexible ducts. A third ball bearing seat is arranged in the third air outlet, and the third ball bearing seat is connected with the inner wall of the third air outlet through a plurality of first support baffles, and the first support baffle is arranged along the axial direction of the third air outlet , so that several air outlet channels are formed between the third ball bearing seat and the inner wall of the third air outlet nozzle. The fourth air outlet is provided with a fourth ball bearing seat, and the fourth ball bearing seat is connected with the inner wall of the fourth air outlet through a plurality of second support baffles, and the second support baffles are arranged along the axial direction of the fourth air outlet , so that several air outlet channels are formed between the fourth ball bearing seat and the inner wall of the fourth air outlet. Also includes a first guide body and a second guide body. The first guide body is provided with a first ball head, and the first ball head cooperates with the third ball bearing seat to form a ball hinge rotation mechanism. The second guide body is provided with a second ball head, and the second ball head cooperates with the fourth ball bearing seat to form a ball hinge rotation mechanism. The first guiding body is connected with the air outlet of the fifth air outlet duct through a third supporting baffle to form a third annular air outlet gap, and the first guiding body is used for the air ejected from the third annular air outlet gap through the Coanda effect. The high-speed airflow guides the direction of the air outlet, and further reduces the relative humidity of the air outlet and improves the drying effect. The second guide body is connected with the air outlet of the sixth air outlet duct through a fourth support baffle to form a fourth annular air outlet slot, and the second guide body is used for the air exiting from the fourth annular air outlet slot through the Coanda effect. The high-speed airflow guides the direction of the air outlet, and further reduces the relative humidity of the air outlet and improves the drying effect. A fan is arranged in the air inlet duct. A heating device is arranged in the first ventilator. With this arrangement, on the one hand, when the main body of the foot dryer is fixed, the air outlet direction can be freely changed by rotating the angle of the first guiding body and the second guiding body, and two different air outlet directions can be provided at the same time. On the other hand, under the same configuration, the annular air outlet gap can increase the air outlet speed of the foot dryer, further reduce the relative humidity of the air outlet, and improve the efficiency of drying the feet. It is more accurate to blow to the two feet, reducing the amount of invalid air output and reducing energy consumption. In addition, the foot dryer does not need to be in contact with the feet when drying the feet, which can effectively avoid cross infection and the breeding and reproduction of foot bacteria in the home environment.

The above examples only represent several embodiments of the present invention, and the descriptions thereof are more specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims (13)

1. A mute foot dryer is characterized by comprising a shell, an air inlet cylinder, a first ventilating cylinder and an air outlet cylinder, wherein the air inlet cylinder, the first ventilating cylinder and the air outlet cylinder are arranged in the shell and are sequentially communicated;

a fan is arranged in the air inlet cylinder;

a heating device is arranged in the first ventilating duct;

the circuit board is also included;

at least one part of area of the circuit board is arranged on the air inlet side of the fan in the air inlet cylinder for heat dissipation.

2. The silent foot dryer according to claim 1,

the first area on the circuit board is provided with electronic components with rated power larger than Q1, and the second area is provided with electronic components with rated power smaller than or equal to Q1;

at least a first area is arranged in the air inlet side of the fan in the air inlet cylinder for heat dissipation.

3. The silent foot dryer according to claim 2,

the electronic component comprises an MOS tube;

the MOS tube is arranged in a first area on the circuit board.

4. The silent foot dryer according to any one of claims 1 to 3,

the air conditioner also comprises a second ventilating barrel;

the first ventilating barrel is communicated with the air outlet barrel through the second ventilating barrel, the depth of the air outlet end of the first ventilating barrel inserted into the cavity of the second ventilating barrel is a first depth, and the depth of the air inlet end of the air outlet barrel inserted into the cavity of the second ventilating barrel is a second depth;

the cross section of the second ventilating duct is larger than that of the first ventilating duct;

the cross section of the second ventilation barrel is larger than that of the air outlet barrel.

5. The silent foot dryer according to claim 4,

the first depth is 1/4 of the second vent barrel cavity length, the second depth is 1/2 of the second vent barrel cavity length, or the first depth is 1/2 of the second vent barrel cavity length, the second depth is 1/4 of the second vent barrel cavity length.

6. The silent foot dryer according to claim 1,

the bottom of the shell is provided with an anti-skid foot pad;

the anti-skidding foot mat is an elastic foot mat or is elastically connected with the shell.

7. Foot dryer according to claim 1,

the bottom of the shell is provided with an anti-skid foot pad;

the anti-skidding foot mat with be provided with damping piece between the casing for the kinetic energy of vibration turns into internal energy when doing the foot machine operation.

8. A mute foot dryer is characterized by comprising a shell, an air inlet cylinder, a first ventilating cylinder and an air outlet cylinder, wherein the air inlet cylinder, the first ventilating cylinder and the air outlet cylinder are arranged in the shell and are sequentially communicated;

a fan is arranged in the air inlet cylinder, and a mounting structure for mounting a circuit board is further arranged on the cylinder wall on the air inlet side of the fan;

and a heating device is arranged in the first ventilating duct.

9. The silent foot dryer according to claim 6,

an electric air hole is formed in the wall, positioned on the air inlet side of the fan, in the air inlet cylinder;

the electric hole is used for penetrating through the circuit board and placing a part of area of the circuit board in the air inlet side of the fan in the air inlet cylinder for heat dissipation.

10. The silent foot dryer according to claim 6,

the air inlet of the air inlet cylinder is trumpet-shaped so as to reduce noise generated by friction between air flow and the air inlet.

11. The silent foot dryer according to claim 6,

the air inlet cylinder, the first ventilating cylinder and the air outlet cylinder are of integrally formed cylindrical structures.

12. The silent foot dryer according to any one of claims 8 to 11,

the air conditioner also comprises a second ventilating barrel;

the first ventilating barrel is communicated with the air outlet barrel through the second ventilating barrel, the depth of the air outlet end of the first ventilating barrel inserted into the cavity of the second ventilating barrel is a first depth, and the depth of the air inlet end of the air outlet barrel inserted into the cavity of the second ventilating barrel is a second depth;

the cross section of the second ventilating duct is larger than that of the first ventilating duct;

the cross section of the second ventilation barrel is larger than that of the air outlet barrel.

13. The silent foot dryer according to claim 12,

the first depth is 1/4 of the second vent barrel cavity length, the second depth is 1/2 of the second vent barrel cavity length, or the first depth is 1/2 of the second vent barrel cavity length, the second depth is 1/4 of the second vent barrel cavity length.

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