JP2018042595A - Washing and drying machine - Google Patents

Abstract

The present invention provides a washing and drying machine capable of efficiently performing pre-drying while suppressing generation of unnecessary noise and energy consumption.
A water tank 2 for storing washing water, a rotating tank 4 rotatably disposed in the water tank 2, a motor 9 for driving the rotating tank 4, and a drain port 17 provided at a lower portion of the water tank 2. A drying means for drying the laundry, a blowing means 20 for blowing warm air into the rotating tub, and a control means 25 for controlling the washing and drying operation in a series of steps of washing, rinsing, dehydrating and drying. The control means 25 has a pre-drying process in which warm air is blown to the laundry in the rotating tub 4 by the drying means prior to the washing process. Is set lower than the rotational speed of the air blowing means 20 in the drying process.
[Selection] Figure 2

Description

  The present invention relates to a laundry dryer that heats laundry and removes ticks and the like.

  The conventional laundry dryer has a function of heating and drying laundry, and in addition to an operation method that continuously performs from washing to drying, the laundry is heated to a predetermined temperature to remove mites and the like. After performing the pre-drying process, the washing process is performed to efficiently remove mite carcasses from the laundry (for example, see Patent Document 1).

Japanese Utility Model Publication No. 3-128078

  However, in the conventional configuration, since the operating conditions are controlled according to the air volume detection result of the air volume sensor, the pre-drying process for removing mites and the like cannot be optimally performed. This is because the optimal drying control differs between when the temperature of the dry laundry is raised and when the temperature of the wet laundry is raised. That is, even in the case of laundry of the same weight, the bulk is reduced in the wet state than in the dry state, so that the heavy wet laundry and the small dry laundry are the same in the rotating tub. When occupying the volume, there is a problem that the same air volume is detected and optimum drying control cannot be performed for each.

  The present invention solves the above-described conventional problems, and an object thereof is to efficiently generate pre-drying while suppressing generation of unnecessary noise and energy consumption.

  In order to solve the conventional problems, a washing and drying machine according to the present invention includes a water tank for storing washing water, a rotary tank rotatably disposed in the water tank, a motor for driving the rotary tank, A drain port provided at the bottom of the water tank, a drying means for drying the laundry, a blowing means for blowing warm air into the rotating tank, and a washing and drying in a series of steps of washing, rinsing, dehydration and drying Control means for controlling the operation, and the control means has a pre-drying step of blowing warm air to the laundry in the rotating tub by the drying means prior to the washing step, and at the time of the pre-drying step The rotational speed of the air blowing means is set lower than the rotational speed of the air blowing means in the drying process when continuously performed from washing to drying.

  With such a configuration, generation of unnecessary noise and energy consumption can be suppressed, and efficient pre-drying can be achieved.

  The washing / drying machine of the present invention can efficiently perform pre-drying while suppressing generation of unnecessary noise and energy consumption.

Sectional drawing which shows schematic structure of the washing-drying machine in Embodiment 1 of this invention It is a time chart which shows operation | movement of the washing-drying machine in Embodiment 1 of this invention, (a) is a time chart at the time of "washing-drying" operation, (b) is at the time of "pre-drying-dehydration" operation. Time chart

  A first invention includes a water tank for storing washing water, a rotating tank rotatably disposed in the water tank, a motor for driving the rotating tank, a drain outlet provided at a lower portion of the water tank, and a washing A drying means for drying an object, a blowing means for blowing warm air into the rotating tub, and a control means for controlling a washing and drying operation in a series of steps of washing, rinsing, dehydrating and drying, The control means has a pre-drying process in which warm air is blown to the laundry in the rotating tub by the drying means prior to the washing process, and the rotation speed of the air blowing means at the pre-drying process is changed from washing to drying. By setting the rotational speed lower than the rotational speed of the blowing means in the drying process when continuously performed, generation of unnecessary noise and energy consumption can be suppressed and efficient pre-drying can be achieved.

  According to a second aspect of the present invention, there is provided a water tank for storing washing water, a rotating tank rotatably disposed in the water tank, a motor for driving the rotating tank, a drain outlet provided at a lower portion of the water tank, A drying means for drying the object, a blowing means for blowing warm air into the rotating tub, and a control means for controlling the washing and drying operation in a series of steps of washing, rinsing, dehydrating and drying, the control The means has a pre-drying step of blowing warm air to the laundry in the rotating tub by the drying means prior to the washing step, and the number of rotations of the blowing means at the time of the pre-drying step is determined solely by the drying step. By setting the rotational speed of the blower means to be substantially the same as in the case of performing the above, generation of useless noise and energy consumption can be suppressed and efficient pre-drying can be achieved.

  Hereinafter, a washing and drying machine according to an embodiment of the present invention will be described with reference to the drawings. The following embodiments are examples embodying the present invention, and do not limit the technical scope of the present invention.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a schematic structure of a washing / drying machine according to Embodiment 1 of the present invention. FIG. 2 is a time chart showing the operation of the washing / drying machine according to Embodiment 1 of the present invention.

  In FIG. 1, a water tank 2 formed in a bottomed cylindrical shape in a housing 1 is elastically supported. A rotating tank 4 formed in a bottomed cylindrical shape is disposed in the water tank 2 so as to be rotatable. The rotation axis 10 of the rotating tub 4 substantially coincides with the cylindrical center line of the rotating tub 4 and also substantially coincides with the cylindrical center line of the water tub 2.

  The water tank 2 and the rotating tank 4 are each provided with openings 5 and 6 on the front side. With the opening 5 side of the water tank 2 being the front side of the housing 1, the rotation axis 10 of the rotating tank 4 is supported by being inclined upward (for example, 10 to 20 degrees) from the horizontal direction. Since the rotation axis 10 is inclined forwardly, a deep water storage state is obtained on the bottom 11 side of the rotary tank 4 with a small amount of water, and water saving can be improved. However, the rotation axis 10 may be horizontal if water saving is not taken into consideration.

  Opposite to the opening 5 of the water tank 2 and the opening 6 of the rotating tank 4, a door body 7 that can be opened and closed is provided on the front surface of the housing 1. The user can put the laundry in and out of the rotating tub 4 by opening the door body 7. A flexible bellows 8 formed of an elastic body such as rubber is disposed around the opening 5 of the water tank 2. When the door body 7 is closed, one end of the bellows 8 comes into pressure contact with the inner surface of the door body 7, and the opening 5 and the door body 7 are sealed.

A motor 9 that rotationally drives the rotating tub 4 is attached to the end surface of the water tub 2 opposite to the opening 5. The rotor of the motor 9 is connected to the rotating tub 4 by the rotating shaft center 10 of the rotating tub 4, and the rotation of the motor 9 is transmitted to the rotating tub 4 by the rotating shaft 10. A plurality of protrusions 12 are provided on the peripheral wall of the rotating tub 4 so as to protrude toward the rotation axis 10. As the rotating tub 4 rotates, the laundry is hooked by the protrusion 12 and lifted upward, and a stirring operation is performed in which the laundry is dropped from a certain height.

  A plurality of small holes 13 are provided in the peripheral wall of the rotating tub 4 over the entire circumference. When the washing water in the water tub 2 accumulates at a predetermined water level, the washing water enters the rotating tub 4 from the small holes 13. It is configured as follows.

  Above the water tank 2, a detergent container 14 for storing detergent is provided. The detergent container 14 is connected to a water supply valve 15 connected to a water tap, and supply and stop of tap water to the detergent container 14 is performed by opening and closing the water supply valve 15.

  A concave drainage groove 3 is provided at the bottom of the inner bottom of the water tank 2. A drain port 17 for discharging the washing water in the water tank 2 is provided at the bottom of the drain groove 3 and in the vicinity of the lowest point of the water tank 2, and the washing water discharged from the drain port 17 is discharged to the outside of the housing 1. A leading drainage path 18 is provided. A drain valve 19 that opens and closes the drain path 18 is provided in the middle of the drain path 18.

  The drain groove 3 is provided with a heater 3a for heating the washing water, and can heat the washing water to a desired temperature.

  The water tank 2 communicates with a drying means for drying laundry, and the drying means includes a drying fan 20 and a dehumidifying heating means 21 which are air blowing means. In the drying step, the hot air that has been dehumidified by the dehumidifying and heating means 21 and heated and dried by the action of the drying fan 20 is supplied from the air outlet 23 provided at the upper position on the back of the water tank 2 to the water tank 2 and the rotating tank. 4 as shown by an arrow a in FIG. Thereafter, the dried warm air exchanges heat with the laundry in the rotating tub 4 to dry the laundry, and then becomes a moist and low-temperature state. Return to the dehumidifying and heating means 21 as indicated by the arrow b in FIG. Repeat this cycle. In addition, the lint generated from the laundry in the drying process is collected by the removable drying filter 22 and discarded by the user.

  In addition, although the ventilation port 23 is formed in the upper part of the back surface of the water tank 2, it should just be formed in the position of the upper half of the back surface of the water tank 2. Further, the air blowing port 23 may be formed at the upper part of the peripheral edge of the opening 6 of the rotating tub 4 or may be formed at any position on the upper half of the peripheral edge of the opening 6.

  In the housing 1, the heater 3a, the motor 9, the water supply valve 15, the drain valve 19, the drying fan 20, and the like are controlled, and the operations of each process of washing, rinsing, dehydration, and drying are controlled based on a set program. Control means 25 is provided.

  The operation and action of the washing / drying machine configured as described above will be described below. FIG. 2 is a time chart showing the operation of the washing / drying machine according to Embodiment 1 of the present invention.

  FIG. 2A is a time chart showing the operation of the washing / drying machine when the “washing to drying” operation is selected. When the user opens the door body 7, puts the laundry into the rotary tub 4, and starts operation, the control means 25 starts the washing process and detects the amount of the loaded laundry. Thereafter, the water supply valve 15 is opened, the washing water dissolves the laundry detergent stored in the detergent container 14, and the washing water is supplied into the water tank 2.

Washing water stored in the water tank 2 is detected by a water level detection means 16 communicating with the lower part of the water tank 2. When the amount of water set according to the amount of laundry is stored, the control means 25 stops water supply. The rotating tub 4 is driven to rotate in the forward and reverse directions by the motor 9, and the laundry stored in the rotating tub 4 is lifted by the protrusion 12 in the rotational direction and then dropped. Washed.

  When a predetermined washing time has elapsed, the drain valve 19 is opened, and the washing water in the water tank 2 is drained through the drain path 18. After draining is completed, the washing water for rinsing is newly supplied and the rinsing process is started. The operation of the rotating tank 4 in the rinsing process is the same as that in the washing process.

  When the predetermined number of rinsing steps are completed, the dehydrating step is started, the drain valve 19 is opened, and the washing water for rinsing in the water tank 2 is drained. The rotating tub 4 rotates at a high speed, and the washing water for rinsing contained in the laundry is dehydrated. The dehydration step is executed for a predetermined time and the operation is terminated. In addition, when the “washing to drying” operation is selected, the drying process is executed following the dehydration process.

  FIG. 2B is a time chart showing the operation of the washing and drying machine when the pre-drying operation for removing ticks and the like is selected prior to the “washing to dehydration” operation. When the user opens the door body 7, puts the laundry into the rotating tub 4, and starts operation, the control means 25 starts the pre-drying process. In the pre-drying process, the drying fan 20 and the dehumidifying and heating means 21 are operated to supply hot air that has been dried to the water tank 2 and the rotating tank 4.

  When the pre-drying time for a predetermined time has elapsed, the washing process is started. The following is the same as the description of FIG.

  In the embodiment of the present invention, the rotation speed of the drying fan 20 in the pre-drying process is set to be lower than the rotation speed of the drying fan 20 in the drying process during washing to drying continuous operation. Moreover, the rotation speed of the drying fan 20 in the pre-drying process is set to be approximately equal to the rotation speed of the drying fan 20 in the drying process of only the drying operation.

  In the present embodiment, for example, the rotation speed of the drying fan 20 at the time of the pre-drying process is set to 4300 rpm, and the rotation speed of the drying fan 20 at the time of the drying process of washing to drying continuous operation is set to 4800 rpm. The rotation speed of the drying fan 20 during the drying process only for operation is set to 4300 rpm.

  In the pre-drying process, dry laundry such as a blanket is put in, but since it is a dry laundry, it is bulky and there is a large gap between the laundry and between the laundry and the rotating tub 4. This is an environment in which the warm air from the drying fan 20 easily passes.

  In addition, since the laundry is dry, even at a low fan rotation speed, not only the surface of the cloth, but also the warm air spreads not only to the back part (overlapping part), the folded part, and the back of the fiber.

  For this reason, in the pre-drying process, the rotation speed of the drying fan 20 is set low. Thereby, noise and power consumption can be suppressed.

  During the drying process of washing to drying continuous operation, the laundry is in a wet state, the laundry is contracted, and is dehydrated by centrifugal force due to high-speed rotation of the rotating tub 4 in the immediately preceding dehydration process. In addition, there are few gaps between the laundry items, and it is difficult for hot air from the drying fan 20 to pass through.

  For this reason, at the time of the drying process of washing to drying continuous operation, if the air volume from the drying fan 20 is not increased, warm air does not spread over the entire laundry, and only the surface of the laundry is dried. Further, since it is moist, it is necessary to increase the rotational speed of the drying fan 20 in order to spread the warm air to the deepened part (overlapping part), the folded part, and the back of the fiber.

  When the user selects the drying process only in the drying operation, it is assumed that the user selects the drying process when the laundry in a damp state that is not sufficiently dried is dried. Although the laundry in this state is moist, it is presumed that the laundry is in a more dry state than the laundry in the drying step of washing to drying continuous operation.

  In addition, when using the drying process only for the drying operation, the user starts the operation by putting in the laundry. Therefore, the operation is continuously performed from washing to drying, and the rotating tank 4 is centrifuged by high-speed rotation. It is bulkier than laundry that has been dehydrated by force, and a large gap is created between the laundry and between the laundry and the rotating tub 4, so that the hot air from the drying fan 20 can easily pass therethrough.

  For this reason, even in a state where the air volume of the drying fan 20 is low, the warm air spreads not only on the surface of the cloth, but also on the back part (overlapping part), the folded part, and the back part of the fiber.

  For this reason, in the drying process of only the drying operation, the rotational speed of the drying fan 20 is set low as in the pre-drying process. Thereby, noise and power consumption can be suppressed.

  In the present embodiment, the drying unit is configured by the drying fan 20 and the dehumidifying heating unit 21 that are blowing units. However, the drying unit may be configured by a blowing unit such as a drying fan and heating units such as a heater.

  As described above, since the washing and drying machine according to the present invention can suppress noise and power consumption, it can be adopted not only for home use but also for business use.

DESCRIPTION OF SYMBOLS 1 Case 2 Water tank 3 Drainage groove 3a Heater 4 Rotating tank 5, 6 Opening part 7 Door body 8 Bellows 9 Motor 10 Rotation center 11 Bottom part 12 Projection body 13 Small hole 14 Detergent container 15 Water supply valve 16 Water level detection means 17 Drainage port DESCRIPTION OF SYMBOLS 18 Drain path 19 Drain valve 20 Drying fan 21 Dehumidification heating means 22 Drying filter 23 Blower port 24 Exhaust port 25 Control means

Claims (2)

A water tank for storing washing water, a rotary tank rotatably disposed in the water tank, a motor for driving the rotary tank, a drain port provided at a lower portion of the water tank, and a laundry for drying laundry A drying means, a blowing means for blowing warm air into the rotating tub, and a control means for controlling a washing and drying operation in a series of steps of washing, rinsing, dehydrating and drying,
The control means includes a pre-drying process in which warm air is blown to the laundry in the rotating tub by the drying means prior to the washing process, and the number of rotations of the air blowing means in the pre-drying process is dried from washing. The washing dryer is set to be lower than the rotational speed of the air blowing means in the drying process in the case where the drying is continuously performed. A water tank for storing washing water, a rotary tank rotatably disposed in the water tank, a motor for driving the rotary tank, a drain port provided at a lower portion of the water tank, and a laundry for drying laundry A drying means, a blowing means for blowing warm air into the rotating tub, and a control means for controlling a washing and drying operation in a series of steps of washing, rinsing, dewatering and drying,
The control means has a pre-drying process in which warm air is blown to the laundry in the rotating tub by the drying means prior to the washing process. The washing / drying machine is set to be approximately the same as the number of rotations of the air blowing means in the case of performing the cleaning alone.

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