CN111850926A - A drum washing machine and its control method - Google Patents

Abstract

The invention provides a drum washing machine and a control method thereof. The drum washing machine includes: a driving device; an inner drum mounting frame for detachably installing inner drums with washing chambers of different volumes; an output end of the driving device is connected to The inner cylinder mounting frame drives the inner cylinder installation frame to rotate, and the inner cylinder installation frame drives the inner cylinder to rotate synchronously to perform laundry. The drum washing machine of the present invention has an inner drum mounting rack, and the inner drum is detachably mounted on the inner drum mounting rack, so that the inner drum of the corresponding volume can be disassembled and replaced according to the actual washing situation, so as to better save energy consumption, and at the same time, it can be Replacing the corresponding inner cylinder according to the type of clothing realizes classified washing and improves the washing experience.

Description

A drum washing machine and its control method

technical field

The present invention relates to the technical field of laundry equipment, in particular, to a drum washing machine and a control method thereof.

Background technique

As one of the most widely used household appliances in people's daily life, washing machines help people get rid of the trouble of laundry and bring great convenience to people. However, with the improvement of people's living standards, there are more and more washing requirements for washing machines. Specifically, because different types of clothes cannot be mixed in the same washing tub for washing, or the clothes of various family members cannot be mixed in the same washing tub. Internal washing has led to a need for separate washing in separate areas.

In order to solve the purpose of independent washing by partition, the existing application number is 201410806293.2, and the name is: a Chinese invention patent for a double-cylinder drum washing machine. a cavity and a second cavity, the first cavity and the second cavity are concentric and the radius of the second cavity is smaller than the radius of the first cavity, the control panel can control the first cavity and the second cavity to work at the same time, It is also possible to control the first cavity and the second cavity to work independently. The beneficial effect created by the invention is that, through the clever design of the structure, not only the space occupied by the washing machine is simplified, but also the underwear and the outer clothes, the light-colored clothes and the dark-colored clothes can be washed in one washing process, which saves energy consumption and satisfies different requirements. Clothes washing requirements, to achieve a good washing effect.

Although the drum washing machine of the above-mentioned invention patent has a first cavity and a second cavity to meet the washing requirements of different clothes, when the first cavity and the second cavity work at the same time, due to the dehydration holes on the inner drum, the The two chambers are connected, and independent partition washing of the two chambers cannot be realized.

In addition, people have higher and higher requirements for water saving and self-cleaning properties of washing machines.

In view of this, the present invention is proposed.

SUMMARY OF THE INVENTION

In order to solve the above problems, the first purpose of the present invention is to provide a drum washing machine, specifically, the following technical solutions are adopted:

A front-loading washing machine, comprising:

drive device;

Inner drum mounting bracket for detachable installation of inner drums with different volume washing chambers;

The output end of the driving device is connected to the inner cylinder mounting frame to drive the inner cylinder installation frame to rotate, and the inner cylinder installation frame drives the inner cylinder to rotate synchronously to perform laundry.

Further, the drive device includes a drive motor and an inner cylinder shaft connected with the drive motor, the inner cylinder mounting frame is fixedly connected with the inner cylinder shaft, and the inner cylinder mounting frame has a mounting portion for installing the inner cylinder;

Preferably, the inner cylinder mounting frame has a mounting portion for mounting inner cylinders with the same diameter specification;

Alternatively, the inner cylinder mounting frame has a plurality of mounting parts corresponding to the installation of inner cylinders with different diameter specifications.

Further, the mounting portion is a buckle structure arranged on the inner cylinder mounting frame, and the inner cylinder is clamped on the inner cylinder mounting frame through the buckle structure.

Further, the inner cylinder mounting frame is a basin-shaped structure, the basin bottom of the basin-shaped structure is fixedly connected with the inner cylinder shaft, and the cylinder bottom of the inner cylinder extends into the basin of the basin-shaped structure from the basin mouth of the basin-shaped structure. Inside the inner chamber, and fixedly installed on the pelvic floor of the basin-shaped structure.

Further, the inner cylinder is a non-porous cylinder, an openable/closable inner cylinder door is installed on the cylinder mouth of the inner cylinder, and the closing of the inner cylinder door and the non-porous cylinder form a closed and independent washing chamber.

Further, a drain port is provided on the side wall of the inner cylinder, and a centrifugal valve for keeping the drain port normally closed is arranged on the drain port. Open for drainage.

Further, it includes a water inlet system, the inner cylinder shaft is a hollow shaft, the water inlet system includes a water inlet pipeline, and the water inlet pipeline communicates with the hollow shaft; the inner cylinder has a communication port, and the communication port When the inner cylinder is installed on the inner cylinder mounting frame, it is sealed with the hollow shaft.

Further, it includes a water inlet system, the inner cylindrical shaft is a hollow shaft, the water inlet system includes a water inlet pipeline, the water inlet pipeline is connected with the hollow shaft, and the inner chamber of the basin-shaped structure is connected with the hollow shaft; There is a circumferential seal between the inner cylinder and the annular peripheral wall of the basin-shaped structure, a closed chamber is formed between the basin bottom of the basin-shaped structure and the basin bottom of the basin-shaped structure, and the inner cylinder has a connection connecting the closed chamber. connection port.

Further, the inner cylinder includes a first inner cylinder and a second inner cylinder, the first inner cylinder and the second inner cylinder can be respectively detachably mounted on the inner cylinder mounting frame, and the first inner cylinder and the second inner cylinder can be respectively detachably installed on the inner cylinder mounting frame. The inner cylinders have the same diameter, and the axial height H1 of the first inner cylinder is greater than the axial height H2 of the second inner cylinder.

The second purpose of the present invention is to provide a control method for a drum washing machine, specifically, the following technical solutions are adopted:

A method for controlling the front-loading washing machine, comprising: the washing machine controls the washing machine to enter a water inlet water level corresponding to the volume of the washing chamber of the inner tub according to the volume of the washing chamber of the inner tub installed on the mounting frame of the inner tub. water for laundry.

The drum washing machine of the present invention has an inner drum mounting rack, and the inner drum is detachably mounted on the inner drum mounting rack, so that the inner drum of the corresponding volume can be disassembled and replaced according to the actual washing situation, so as to better save energy consumption, and at the same time, it can be Replacing the corresponding inner cylinder according to the type of clothing realizes classified washing and improves the washing experience.

Therefore, the drum washing machine of the present invention can realize that a driving motor can drive inner drums of various specifications, so that one inner drum can be run for washing or multiple inner drums can be washed at the same time, and the appearance is only the appearance of a washing machine, so that one washing machine has more than one motor. It has an independent washing partition, which can easily realize the functions of partitioned washing such as baby washing, underwear washing, elderly clothing washing, socks washing, etc., which improves the washing effect and enhances the user experience.

The invention provides a drum washing machine with a front-opening structure of a non-porous inner cylinder, which has a simple structure and can greatly reduce the washing water consumption of the washing machine without filling washing/rinsing water between the inner cylinder and the outer cylinder. Avoid the possibility of dirt adhesion between the inner cylinder and the outer cylinder. It greatly improves user health and user experience, and greatly saves water resources.

Description of drawings

1 is a schematic diagram of the principle of a drum washing machine according to an embodiment of the present invention;

2 is a schematic diagram of the principle of the drum washing machine according to the second embodiment of the present invention (the first embodiment);

3 is a schematic diagram of the principle of the drum washing machine according to the second embodiment of the present invention (the second embodiment);

4 is a schematic diagram of the principle of the drum washing machine according to the second embodiment of the present invention (the third embodiment);

5 is a schematic diagram of the principle of a three-drum washing machine according to an embodiment of the present invention;

6 is a partial enlarged view (pressure relief state) in FIG. 5 of a three-drum washing machine according to an embodiment of the present invention;

7 is a partial enlarged view (pressurized state) in FIG. 5 of a three-drum washing machine according to an embodiment of the present invention;

8 is a schematic diagram of the principle of a four-drum washing machine according to an embodiment of the present invention;

Fig. 9 is a partial enlarged view in Fig. 8 of the fourth drum washing machine according to the embodiment of the present invention (pressure relief state of the first embodiment);

Fig. 10 is a partial enlarged view in Fig. 8 of the fourth drum washing machine according to the embodiment of the present invention (pressurized state of the first embodiment);

Fig. 11 is a partial enlarged view in Fig. 8 of a four-drum washing machine according to the embodiment of the present invention (pressure relief state of the second embodiment);

Fig. 12 is a partial enlarged view in Fig. 8 of a four-drum washing machine according to an embodiment of the present invention (pressurized state of the second embodiment);

13 is a schematic diagram 1 of the principle of the drum washing machine according to the fifth embodiment of the present invention;

FIG. 14 is a second schematic diagram of the principle of the drum washing machine according to the fifth embodiment of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, a kind of drum washing machine of the present invention and its control method are described in detail:

As shown in FIGS. 1-14 , the present embodiment provides a front-loading drum washing machine with a non-porous inner tub, which has a simple structure and can greatly reduce the need for filling washing/rinsing water between the inner tub and the outer tub. water consumption in the washing machine. Avoid the possibility of dirt adhesion between the inner cylinder and the outer cylinder. It greatly improves user health and user experience, and greatly saves water resources.

The front-loading washing machine of this embodiment has a casing 19, and the casing 19 includes: a top panel 2, a front panel, a back panel and a bottom panel. Bottom feet 9 are installed and fixed on the bottom plate for supporting the entire washing machine. The outer casing 19 has an outer cylinder 18 inside, and an inner cylinder 17 is provided coaxially inside the outer cylinder 18 . The main purpose of the outer cylinder 18 is to collect the drainage from the inner cylinder 17 and the drainage from the high-speed centrifugal dehydration of the inner cylinder 17 . The inner cylinder 17 rotates, and preferably a lifting rib 43 is provided to continuously lift and drop the clothes, so as to wash the clothes. The inner cylinder 17 is of a non-porous structure. The outer cylinder 18 has a central mounting hole, and the bearing 12 is mounted and fixed. The inner cylinder shaft 13 , which is fastened to the inner cylinder 17 , passes through the illustrated bearing 12 and is connected to the drive motor 16 . An openable/closable inner cylinder door 6 is installed on the front cylinder opening of the inner cylinder 17, thereby realizing that the inner cylinder 17 is a sealed cabin structure.

An openable/closable door 5 is mounted on the housing 19 of this embodiment.

Example 1

This embodiment mainly solves the problem of how to accurately determine the water intake of the non-porous inner drum drum washing machine, and the specific scheme is as follows:

A drum washing machine, comprising an inner cylinder 17 and a water inlet pipeline communicated with the inner cylinder 17, the inner cylinder 17 is a non-porous inner cylinder, and holds washing water when washing clothes, and the water inlet pipeline is provided for Flow sensor 1 that detects the flow of incoming water.

In this embodiment, the flow sensor 1 is installed on the water inlet pipeline to monitor the flow rate of the water inlet. When the set water inlet amount is reached, the water inlet valve 20 is closed to complete the water inlet. This embodiment adopts the flow sensor to solve the problem of water inflow according to the set water level of the non-porous inner drum washing machine, ensures the washing effect, has a simple structure and is convenient to operate.

Further, the drum washing machine of this embodiment includes a water inlet valve 20 and a detergent box 3. The water inlet pipeline includes a first water inlet pipe and a second water inlet pipe, and the outlet end of the water inlet valve 20 passes through the first water inlet pipe. The detergent box 3 is connected, and the outlet end of the detergent box 3 is communicated with the inner cylinder 17 through the second water inlet pipe. The flow sensor 1 is arranged on the first water inlet pipe or the second water inlet pipe.

Preferably, the flow sensor 1 is arranged on the first water inlet pipe, so that the detergent in the detergent box can be placed into the flow sensor 1 .

The front-loading washing machine of this embodiment includes a main controller 4, and the flow sensor 1 and the main controller 4 are electrically connected through a line. The main controller 4 can collect the water inflow volume of the inner cylinder 17 in real time to reach the set water inflow volume, and close the water inlet valve 20 .

As an implementation of this embodiment, the flow sensor 1 is a rotor flow sensor, or a turbine flow sensor, or an ultrasonic flow sensor, or an electromagnetic flow sensor, or an orifice flow sensor.

The flow sensor 1 can be installed at any position on the water inlet pipeline in this embodiment, and it is preferably arranged at the rear of the water inlet valve 20 to accurately measure the water flow rate entering the sealed inner cylinder 17 , and the flow sensor 1 is connected to the main controller 4 . , the main controller 4 can collect the water inflow of the inner cylinder 17 in real time to reach the set water inflow and close the water inlet valve 20 .

In order to realize the inflow of water into the non-porous inner drum of this embodiment, the drum washing machine of this embodiment includes a drive motor 16 and an inner drum shaft 13, and the drive motor 16 drives the inner drum through the transmission connection between the inner drum shaft 13 and the inner drum 17. When the cylinder 17 rotates, the inner cylinder shaft 13 has a hollow passage 14 which communicates with the inner cylinder 17 , and the water inlet pipeline communicates with the hollow passage of the inner cylinder shaft 13 .

Specifically, the inner cylindrical shaft 13 is connected to the driving motor 16, the driving motor 16 includes a stator and a rotor, and the rotor is fixedly connected to the inner cylindrical shaft 13; a through hole is provided at the center of the rotor, and the water inlet pipeline passes through The through hole of the rotor communicates with the hollow channel 14 of the inner cylindrical shaft 13 .

Further, a first dynamic sealing structure 15 is arranged between the water inlet pipeline and the through hole of the rotor, and a second sealing structure is arranged between the through hole of the rotor and the hollow channel 14 of the inner cylindrical shaft 13 .

In order to realize the drainage of the non-porous inner tub, the drum washing machine of this embodiment includes an outer tub 18, an inner tub drain hole is provided on the side wall of the inner tub 17, and a normally closed one-way valve plug 11 is installed on the inner tub drain hole. The outer cylinder 18 is provided with a push rod mechanism 10 for pushing up the check valve plug 11 to drain water.

As an implementation of this embodiment, the outer cylinder 18 is also provided with a locking mechanism for locking the rotation of the inner cylinder 17. The locking mechanism locks the inner cylinder and the ejector rod mechanism 10 locks the check valve plug. 11 Top open for drainage.

As another implementation of this embodiment, a plurality of dehydration holes are opened on the side wall of the inner cylinder 17 in this embodiment, and centrifugal valves are installed on the dehydration holes. By controlling the inner cylinder to reach a certain speed, the centrifugal The valve is opened under the action of centrifugal force of dehydration for washing drainage or dehydration drainage.

This embodiment also provides a method for controlling the front-loading washing machine. The washing machine executes a washing/rinsing procedure. During the water inflow process, a flow sensor detects the inflow water flow value in real time, and the washing machine calculates the water inflow amount according to the water inflow flow value and water inflow time , when the water intake reaches the set water intake of the washing machine, stop the water intake.

The drum washing machine is provided with a plurality of water inlet flow values that can be selected by the user, and the washing machine enters water according to the water inlet flow value selected by the user.

The front-loading washing machine has the function of weighing clothes, which can determine the flow value of the incoming water according to the weight of the clothes.

Embodiment 2

As shown in FIGS. 2-4 , a drum washing machine of this embodiment includes an inner tub 17 and a water inlet pipeline. The inner tub is a non-porous inner tub, which holds washing water when washing clothes, and also includes an inner tub for washing clothes. The water measuring device is used for measuring the water intake. The water intake pipeline is connected with the water measuring device, and the water measuring device is communicated with the inner cylinder.

The drum washing machine of this embodiment is provided with a water measuring device, and before the water is fed into the inner tub 1, it enters the water measuring device for quantitative measurement, and determines the number of times the water measuring device measures water according to the set water level, thereby solving the problem of solving the problem. The non-porous inner drum washing machine ensures the washing effect according to the water inflow problem of the set water level, and has a simple structure and convenient operation.

Further, the water measuring device in this embodiment includes a water measuring tank 21, the water measuring tank 21 has a water inlet and a water outlet, the water inlet is connected to the water inlet pipeline, and the water outlet is connected to the inner cylinder 17; A water outlet control device that controls the opening of the water outlet when the water volume in the equivalent water tank 21 reaches a set value.

As an implementation of this embodiment, as shown in FIG. 2 , the water measuring tank 21 is arranged at the bottom of the inner cylinder 17 , and the water measuring device includes a water level detecting device 22 for detecting the water measuring tank 21 , The water outlet control device is the water tank drain pump 23, and the water tank drain pump 23 starts the water tank drain pump 23 when the water level detection device 22 detects that the water level in the water volume water tank 21 reaches the set value. Water is pumped into the inner cylinder 17 .

As an implementation of this embodiment, as shown in FIG. 3 , the water measuring tank 21 is arranged on the upper part of the inner cylinder 17 , and the water measuring device includes a water level detecting device 22 for detecting the water measuring tank, so The water outlet control device is a water tank drain valve 25, and the water tank drain valve 25 is opened when the water level detection device 22 detects that the water level in the water volume water tank 21 reaches the set value, and the water in the water volume water tank 21 is discharged into the inner cylinder. .

The water level detection device 22 in this embodiment is a liquid level sensor. The liquid level sensor includes an air chamber and a sensor unit, and the air chamber is communicated with the water volume tank. Alternatively, the water level detection device 22 includes a plurality of water level detection probes arranged in the water measuring tank and arranged in the depth direction thereof.

As an implementation of this embodiment, the water measuring tank 21 is arranged on the upper part of the inner cylinder 17, the water outlet is arranged on the bottom wall of the water measuring tank 21, and the water outlet control device is to keep the water outlet normally closed When the water volume in the water tank reaches a certain value, the one-way valve of the water tank is opened under the water pressure and gravity, the water in the water tank 21 is discharged into the inner cylinder 17, and the one-way valve of the water tank is reset to keep the water outlet closed. .

An overflow hole 24 is provided on the water measuring tank 21 described in this embodiment, and the overflow hole 24 is connected to an overflow pipeline for leading out the overflowed water in the measuring water tank.

Preferably, the drum washing machine includes a drainage pipeline 8 , and the overflow pipeline communicates with the drainage pipeline 8 .

As an implementation of this embodiment, as shown in FIG. 4 , the water measuring device includes a heating device 26 disposed in the measuring water tank 21 and a water temperature detecting device for detecting the water temperature in the measuring water tank.

This embodiment also provides a control method for the drum washing machine. The washing machine executes the washing/rinsing procedure, and the washing machine controls the washing water to enter the volume water tank. All the water in the water tank is drained into the inner cylinder, and the water inflow is started again to enter the volume water tank, and this cycle is repeated until the water level in the inner cylinder reaches the set value, and the water inflow is ended.

Further, the washing machine controls the washing water to enter the water volume tank. When the amount of water in the volume water tank reaches the set value, the water intake is stopped, and the heating device is controlled to operate to heat the washing water. When the water temperature detection device detects that the water temperature in the volume water tank reaches When setting the value, all the water in the measuring water tank is drained into the inner cylinder.

Embodiment 3

This embodiment mainly solves the problem of how to ensure the unbalanced air pressure in the airtight chamber of the non-porous inner drum washing machine. Specifically, the sudden water cutoff of the electromagnetic valve, especially the water disconnection of the water pipe network, forms a negative pressure, and the washing water in the airtight chamber is returned to the air. Wash to the pipe network; or there is gas inside, and it is difficult to enter the water.

As shown in FIG. 5-FIG. 7, a drum washing machine of this embodiment includes an inner tub 17, the inner tub 17 is a non-porous inner tub, holds washing water when washing clothes, and also includes a device for connecting the inner tub 17 with the outside world. The air pressure balance mechanism that balances the air pressure inside the inner cylinder.

When water enters, the gas in the sealed chamber of the inner cylinder can be overflowed through the equalizing mechanism under pressure to ensure the air pressure balance.

When the water is suddenly cut off, the external atmosphere can quickly enter the sealed chamber of the inner cylinder, and destroy the back suction, ensure the air pressure balance, and prevent the washing water from being sucked into the tap water pipe network.

In other cases, such as dehydration, the air pressure balance mechanism can also ensure the air pressure balance of the inner cylinder.

As an implementation of this embodiment, the air pressure balancing mechanism includes a pressure equalizing hole 27 provided on the inner cylinder 17 , and the end of the pressure equalizing hole 27 that communicates with the inner cylinder 17 is arranged on the inner cylinder 17 to rotate close to the The position of the central axis is always higher than the position of the highest water level in the inner cylinder 17 .

The drum washing machine of this embodiment includes a driving motor 16 and an inner drum shaft 13. The driving motor 16 drives the inner drum 17 to rotate through the transmission connection between the inner drum shaft 13 and the inner drum 17, and the pressure equalizing hole 27 is opened in the inner drum The shaft 13 communicates the interior of the inner cylinder 17 with the external environment, and the highest water level in the inner cylinder 17 is lower than the inner cylinder shaft 13 . This can prevent the water in the inner cylinder from flowing out of the pressure equalizing hole.

The drum washing machine of this embodiment includes an outer tub 18, the inner tub 17 is arranged inside the outer tub 18, the water discharged from the inner tub 17 is discharged through the outer tub 18, and the tub opening of the inner tub 17 is installed to seal the inner tub of the inner tub. In the cylinder door 6, the cylinder opening of the outer cylinder 18 is open, one end of the pressure equalizing hole 27 communicates with the interior of the inner cylinder 17, and the other end is arranged inside the outer cylinder 18 and communicates with it. In this way, to prevent extreme situations, the water from this hole can also be collected in the outer cylinder 18 .

Further, the side wall of the inner cylinder 17 described in this embodiment is provided with an inner cylinder drain hole, a normally closed one-way valve plug 11 is installed on the inner cylinder drain hole, and the outer cylinder 18 is installed for the one-way valve. The plug 11 pushes up the ejector mechanism 10 for draining water.

Preferably, the outer cylinder 18 is also provided with a locking mechanism for locking the rotation of the inner cylinder.

Further, the drum washing machine of this embodiment includes a water inlet pipeline, the inner cylindrical shaft 13 has a hollow channel 14 that communicates with the inner cylinder 17 , and the water inlet pipeline communicates with the hollow channel 14 of the inner cylindrical shaft 13 ; The pressure equalizing channel 27 and the hollow channel 14 communicate with the interior of the inner cylinder 17 and are isolated from each other. In this way, it can be ensured that the gas in the sealed chamber of the inner cylinder can be discharged smoothly to maintain the air pressure balance inside the inner cylinder, and at the same time, water leakage can be prevented from being directly discharged from the pressure equalizing hole 27 .

Specifically, the hollow channel 27 extends from one end to the other end along the direction of the central axis of the inner cylinder shaft, the pressure equalizing channel includes a first channel section and a second channel section, and the first channel section is arranged in parallel with the hollow channel One end of the second channel section is communicated with the first channel section, and the other end extends to the outer peripheral wall of the inner tube shaft and communicates with the interior of the outer tube.

Preferably, the second channel section is perpendicular to the first channel section to form an L-shaped pressure equalizing channel.

Further, the inner cylindrical shaft 13 is connected to a driving motor 16, the driving motor 16 includes a stator and a rotor, and the rotor is fixedly connected to the inner cylindrical shaft; a through hole is provided in the center of the rotor, and the water inlet pipeline passes through the rotor The through hole is communicated with the hollow channel of the inner cylinder shaft.

Preferably, a first dynamic sealing structure is arranged between the water inlet pipeline and the through hole of the rotor, and a second sealing structure is arranged between the through hole of the rotor and the hollow channel of the inner cylindrical shaft.

In the drum washing machine described in this embodiment, a plurality of dehydration holes are provided on the side wall of the inner tub 17, and centrifugal valves are installed on the dehydration holes. The centrifugal valves are opened under the action of dehydration centrifugal force for dehydration and drainage.

Embodiment 4

This embodiment mainly solves the problem of how to ensure the unbalanced air pressure in the airtight chamber of the non-porous inner drum washing machine. Specifically, the sudden water cutoff of the electromagnetic valve, especially the water disconnection of the water pipe network, forms a negative pressure, and the washing water in the airtight chamber is returned to the air. Wash to the pipe network; or there is gas inside, and it is difficult to enter the water.

As shown in FIGS. 8 to 12 , a drum washing machine of this embodiment includes an inner tub 17 , which is a non-porous inner tub, holds washing water when washing clothes, and also includes a device for connecting the inner tub with the external environment. A pressurization mechanism and/or a pressure relief mechanism to balance the air pressure inside the inner cylinder 17 .

The pressurizing mechanism described in this embodiment includes a pressurizing hole 28 and a negative pressure safety valve 29. The negative pressure safety valve 29 is arranged on the pressurizing hole 28, and is used for single operation when the internal pressure of the inner cylinder 17 is lower than the atmospheric pressure of the external environment. Leading to the pressurizing channel 28, the ambient air enters the inner cylinder 17 through the pressurizing channel 28 for pressurization until the air pressure inside the inner cylinder 17 is balanced with the external ambient air pressure, and the negative pressure safety valve 29 is closed.

The pressure relief mechanism described in this embodiment includes a pressure relief hole 30 and a positive pressure safety valve 31 . The pressure relief hole 30 is provided on the inner cylinder 17 near the central axis of rotation and is always higher than the highest pressure inside the inner cylinder 17 . At the water level position, the positive pressure safety valve 31 is arranged on the pressure relief hole 30, which is used for the one-way guide pressure relief hole 30 to release the pressure when the internal pressure of the inner cylinder 17 is greater than the atmospheric pressure of the external environment, until the pressure inside the inner cylinder 17 is the same as the external pressure. The ambient air pressure is balanced, and the positive pressure safety valve 31 is closed.

As shown in Figure 9, when water enters, the gas in the airtight chamber of the inner cylinder 17 is pressurized. Once it is greater than the set value of the positive pressure safety valve, the positive pressure safety valve is opened, and it can overflow through the pressure relief hole to ensure the air pressure balance. .

As shown in Figure 10, when the water is suddenly cut off, the gas in the sealed cabin of the inner cylinder 17 is pressurized. Once it is less than the set value of the positive pressure safety valve, the external atmosphere can quickly enter the sealed cabin and destroy the back suction to ensure the air pressure balance. Avoid washing water being drawn into the mains network.

In other cases, such as dehydration, the air pressure balance mechanism can also ensure the air pressure balance of the inner cylinder.

The front-loading washing machine of this embodiment includes a drive motor 16 and an inner drum shaft 13. The drive motor 16 drives the inner drum 17 to rotate through the transmission connection between the inner drum shaft 13 and the inner drum 17. The pressure hole 30 is opened on the inner cylinder shaft 13 to communicate the interior of the inner cylinder 17 with the external environment, and the highest water level in the inner cylinder 17 is lower than the inner cylinder shaft 13 .

The front-loading washing machine of this embodiment includes an outer tub 18, the inner tub 17 is arranged inside the outer tub 18, the water discharged from the inner tub 17 is discharged through the outer tub 18, and the tub opening of the inner tub 17 is installed with an inner tub that closes the inner tub Door 6, the cylinder opening of the outer cylinder 18 is open, one end of the pressurization hole 28 and/or the pressure relief hole 30 communicates with the inner cylinder 17, and the other end is arranged inside the outer cylinder 18 and communicates with it.

The drum washing machine of this embodiment includes a water inlet pipeline, the inner cylindrical shaft 13 has a hollow channel 14 that communicates with the inner cylinder 17, and the water inlet pipeline is communicated with the hollow channel 14 of the inner cylindrical shaft 13; The pressure relief hole 30 and the hollow channel 14 are communicated with the inner cylinder 17 and are separated from each other.

As shown in FIG. 9 and FIG. 10 , the hollow channel 14 extends from one end to the other end along the direction of the central axis of the inner cylindrical shaft 13 , and the pressure relief channel 30 includes a first channel section and a second channel section. The tunnel section is arranged in parallel with the hollow channel, one end of which is communicated with the interior of the inner cylinder, one end of the second tunnel section is communicated with the first tunnel section, and the other end extends to the outer peripheral wall of the inner cylinder shaft and communicates with the interior of the outer cylinder;

Preferably, the second channel section is perpendicular to the first channel section to form an L-shaped pressure relief channel.

The drum washing machine of this embodiment includes a water inlet pipeline, the inner cylindrical shaft 13 has a hollow channel 14 that communicates with the inner cylinder 17, and the water inlet pipeline is communicated with the hollow channel 14 of the inner cylindrical shaft 13; Said pressurizing hole 28 communicates with the hollow channel 14 .

Further, the hollow passage 14 extends from one end to the other end along the direction of the central axis of the inner cylindrical shaft 13 , one end of the pressurizing hole 28 is communicated with the hollow passage 14 , and the other end extends to the outer circumference of the inner cylindrical shaft 13 . The wall communicates with the interior of the outer cylinder 18 .

Preferably, the pressurizing hole 28 and the hollow channel 14 are arranged perpendicular to each other.

In this embodiment, the inner cylindrical shaft is connected to a driving motor, and the driving motor includes a stator and a rotor, and the rotor is fixedly connected to the inner cylindrical shaft; a through hole is provided in the center of the rotor, and the water inlet pipeline passes through the through hole of the rotor. It is communicated with the hollow channel of the inner cylindrical shaft.

Preferably, a first dynamic sealing structure is arranged between the water inlet pipeline and the through hole of the rotor, and a second sealing structure is arranged between the through hole of the rotor and the hollow channel of the inner cylindrical shaft.

As shown in FIGS. 11 and 12 , the pressurization passage 28 and the pressure relief passage 30 are both arranged on the inner cylinder shaft 13, and the openings communicating with the atmosphere are all inside the outer cylinder 18; the openings of the airtight chambers communicating with the inner cylinder 17 are all in the inner cylinder The inner side of the water inlet channel 14 of the shaft 13 .

It can be imagined that the preferred pressurization channel 28 and the pressure relief channel 30 are both provided on the inner cylinder shaft 13, and the openings communicating with the atmosphere are all inside the outer cylinder 18; the openings of the sealed cabin communicating with the inner cylinder 17 are all inside the sealing cabin.

Embodiment 5

As shown in FIGS. 13-14 , a drum washing machine of this embodiment includes:

drive device;

The inner tub mounting bracket 32 is used to detachably install the inner tub 17 with different volume washing chambers;

The output end of the driving device is connected to the inner cylinder mounting frame 32 to drive the inner cylinder mounting frame 32 to rotate, and the inner cylinder mounting frame 32 drives the inner cylinder 17 to rotate synchronously to perform laundry.

The drum washing machine of this embodiment has an inner tub mounting frame 32, and the inner tub 17 is detachably mounted on the inner tub mounting frame. In this way, the inner tub of the corresponding volume can be disassembled and replaced according to the actual washing situation, so as to better save energy consumption. At the same time, the corresponding inner cylinder can also be replaced according to the type of clothing, which realizes classified washing and improves the washing experience.

Further, the driving device includes a driving motor 16 and an inner cylinder shaft 13 connected with the driving motor 16 , the inner cylinder mounting frame 32 is fixedly connected with the inner cylinder shaft 13 , and the inner cylinder mounting frame 32 has a mounting bracket for mounting The mounting part of the inner cylinder.

Preferably, the inner cylinder mounting frame 32 has a mounting portion for mounting inner cylinders with the same diameter specification;

Alternatively, the inner cylinder mounting frame 32 has a plurality of mounting parts, corresponding to which inner cylinders with different diameter specifications are installed.

As an implementation of this embodiment, the mounting portion is a buckle structure provided on the inner cylinder mounting frame 32, and the inner cylinder 17 is clamped on the inner cylinder mounting frame through the buckle structure. The detachable installation of the inner cylinder 17 is realized through the buckle structure, which facilitates the user to perform the operation of replacing the inner cylinder and improves the user experience.

Specifically, the inner cylinder mounting bracket 32 is a basin-shaped structure, the basin bottom of the basin-shaped structure is fixedly connected with the inner cylinder shaft, and the cylinder bottom of the inner cylinder extends into the basin-shaped structure from the basin mouth of the basin-shaped structure inside the inner chamber and fixedly installed on the pelvic floor of the basin-shaped structure.

As an implementation of this embodiment, the inner cylinder 17 is a non-porous cylinder, an openable/closable inner cylinder door 6 is installed on the cylinder opening of the inner cylinder 17, and the inner cylinder door 6 is closed and the non-porous cylinder forms a sealable closure Separate wash chamber. This embodiment provides a drum washing machine with a front-opening structure of a non-porous inner cylinder, which has a simple structure and can greatly reduce the washing water consumption of the washing machine without filling washing/rinsing water between the inner cylinder and the outer cylinder. It avoids the possibility of dirt adhesion between the inner cylinder and the outer cylinder. It greatly improves user health and user experience, and greatly saves water resources.

In order to realize the drainage of the non-porous inner cylinder, a drainage port is provided on the side wall of the inner cylinder 17 in this embodiment, and a centrifugal valve 33 for keeping the drainage port normally closed is provided on the drainage port. When the rotational speed of the inner cylinder 17 exceeds the set value, the drain port is opened to drain the water.

The centrifugal valve drainage structure is adopted, so that during the washing process of the inner cylinder 17, since the rotation speed cannot reach the opening rotation speed of the centrifugal valve, the clothes in the inner cylinder 17 can be washed independently. If the rotation speed exceeds the set value, the centrifugal valve will be opened to realize drainage.

Since the inner tub 17 adopts a non-porous design, the inner tub 17 is both a washing tub and a water container. The shaft 13 is a hollow shaft, the water inlet system includes a water inlet pipeline, and the water inlet pipeline communicates with the hollow shaft; the inner cylinder has a communication port, and the communication port is connected with the inner cylinder when the inner cylinder is installed on the inner cylinder mounting frame. Hollow shaft seal connection.

In order to realize the water intake of the non-porous inner drum, as another implementation of this embodiment, the drum washing machine of this embodiment includes a water intake system, the inner drum shaft 13 is a hollow shaft, and the water intake system includes The water inlet pipeline is connected to the hollow shaft, and the inner chamber of the basin-shaped structure is connected to the hollow shaft; the inner cylinder and the annular peripheral wall of the basin-shaped structure are circumferentially sealed, and the basin bottom of the basin-shaped structure is connected to the hollow shaft. A closed chamber is formed between the basin bottoms of the basin-shaped structure, and the inner cylinder is provided with a communication port that communicates with the closed chamber.

As shown in FIG. 13 and FIG. 14 , the inner cylinder described in this embodiment includes a first inner cylinder and a second inner cylinder, and the first inner cylinder and the second inner cylinder can be respectively detachably installed on the inner cylinder mounting frame, The first inner cylinder and the second inner cylinder have the same diameter, and the axial height H1 of the first inner cylinder is greater than the axial height H2 of the second inner cylinder.

Of course, the inner cylinders in this embodiment are not limited to two, and a plurality of inner cylinders with different axial heights can also be selected according to specific conditions.

The present embodiment also provides a method for controlling the front-loading washing machine, including: the washing machine controls the washing machine to control the washing machine according to the volume of the washing chamber of the inner tub installed on the inner tub mounting frame according to the volume of the washing chamber of the inner tub. Water at the water inlet level to wash clothes.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Within the scope of the technical solution of the present invention, personnel can make some changes or modifications to equivalent examples of equivalent changes by using the above-mentioned technical content, but any content that does not depart from the technical solution of the present invention is based on the technical solution of the present invention. Substantially any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the solutions of the present invention.

Claims (10)

1. A drum washing machine characterized by comprising:

a drive device;

the inner cylinder mounting rack is used for detachably mounting inner cylinders with washing chambers with different volumes;

the output end of the driving device is connected with the inner cylinder mounting rack to drive the inner cylinder mounting rack to rotate, and the inner cylinder mounting rack drives the inner cylinder to synchronously rotate to wash clothes.

2. A drum washing machine according to claim 1, characterized in that the driving device comprises a driving motor and an inner drum shaft connected with the driving motor, the inner drum mounting bracket is fixedly connected with the inner drum shaft, and the inner drum mounting bracket is provided with a mounting part for mounting the inner drum;

preferably, the inner cylinder mounting frame is provided with a mounting part for mounting inner cylinders with the same diameter specification;

or, the inner cylinder mounting frame is provided with a plurality of mounting parts, and inner cylinders with different diameters are correspondingly mounted.

3. A drum washing machine according to claim 2, characterized in that the mounting part is a buckle structure arranged on the inner drum mounting frame, and the inner drum is clamped on the inner drum mounting frame through the buckle structure.

4. A drum washing machine according to claim 2, characterized in that the inner drum mounting frame is of a basin-shaped structure, the basin bottom of the basin-shaped structure is fixedly connected with the inner drum shaft, and the drum bottom of the inner drum extends into the inner cavity of the basin-shaped structure from the basin opening of the basin-shaped structure and is fixedly mounted on the basin bottom of the basin-shaped structure.

5. A drum washing machine according to any one of claims 1-4, characterized in that the inner drum is a non-porous drum, the opening of the inner drum is provided with an openable/closable inner drum door, and the inner drum door closes a washing chamber which is independent of the non-porous drum.

6. A drum washing machine as claimed in claim 5, characterized in that the side wall of the inner drum is provided with a water outlet, the water outlet is provided with a centrifugal valve for keeping the water outlet normally closed, and the centrifugal valve opens the water outlet to discharge water when the rotation speed of the inner drum exceeds a set value.

7. A drum washing machine according to claim 5, characterized by comprising a water inlet system, wherein the inner drum shaft is a hollow shaft, the water inlet system comprises a water inlet pipeline, and the water inlet pipeline is communicated with the hollow shaft; the inner cylinder is provided with a communication port, and the communication port is hermetically connected with the hollow shaft when the inner cylinder is arranged on the inner cylinder mounting frame.

8. A drum washing machine according to claim 5, characterized by comprising a water inlet system, wherein the inner drum shaft is a hollow shaft, the water inlet system comprises a water inlet pipeline, the water inlet pipeline is communicated with the hollow shaft, and the inner chamber of the basin-shaped structure is communicated with the hollow shaft; the inner cylinder is circumferentially sealed with the annular peripheral wall of the basin-shaped structure, a closed chamber is formed between the basin bottom of the basin-shaped structure and the basin bottom of the basin-shaped structure, and the inner cylinder is provided with a communication port communicated with the closed chamber.

9. A drum washing machine according to claim 6, characterized in that the inner drum comprises a first inner drum and a second inner drum, the first inner drum and the second inner drum can be respectively and detachably mounted on the inner drum mounting rack, the first inner drum and the second inner drum have the same diameter, and the axial height H1 of the first inner drum is larger than the axial height H2 of the second inner drum.

10. A control method of a drum washing machine according to any one of claims 1-9, characterized by comprising: the washing machine is controlled to feed water according to the volume of the washing chamber of the inner barrel arranged on the inner barrel mounting frame and the water inlet level corresponding to the volume of the washing chamber of the inner barrel, so that clothes are washed.

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