TW201736661A - Washer-dryer - Google Patents

Abstract

A washer-dryer provides an effective removal of dust mites and feces on a blanket, a comforter, or the like; and its size of frame body won't be bigger. The washer-dryer comprises a driving control means, an air heating means, and an air-blowing fan control means. The control means uses the air heating means and the air-blowing means, both used in the drying step, to conduct a hot air treatment step for warming clothes and, after that, a washing step.

Description

Laundry dryer

The present invention relates to a laundry dryer.

In families with allergic dermatitis or asthma, in order to eliminate allergens, not only frequently clean the room, but also keep the clothing or blankets, quilts, etc. that are in direct contact with the skin clean. Blankets or quilts are directly in contact with humans for a long time. The materials that become dust mites such as smudges or dandruff are abundant, and because they are thick, they have a place to live, so they are suitable for dust mites. Blankets or quilts are generally heated by the sun, low humidity and attracted by the vacuum cleaner to remove dust mites. However, there are many dust mites in the interior than in the surface, and the internal temperature cannot be sufficiently raised during the sun exposure, and since the vacuum cleaner is difficult to suck into the interior, it is not easy to remove dust mites. Therefore, in order to keep it clean, most of the large laundry items such as blankets or quilts are expected to be washed and dried in the house as much as possible. Recently, the washing and drying machine has become more and more easy to produce laundry, drying blankets or quilts in the home environment as the capacity has increased.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 5-123491

[Patent Document 2] Japanese Patent Publication No. 2010-502357

[Non-patent literature]

[Non-Patent Document 1] Ji Chuancui, Ecology of Habitat Dust Mites in Houses and Research on Control (1)~(8), House House Pests, Vol.13~Vol.18, (1991-1995)

For the results of investigations on the types of bedding, tatami mats, carpets, and wooden floors in the house, the dust mites accounted for more than 70%, and other Tarsonemidae and whiteflies ( Acaridae), Cheyletidae, Haplochthoniidae, etc. are about a few percent. As a nuisance caused by dust mites, it is known that the skin is inflamed by the dust mites of the carnivorous mites, or the symptoms of asthma or allergic rhinitis caused by dusty corpses or feces. In particular, the dust mite feces of most of the Dust mites have a particularly high allergic activity, not only the dust mites themselves, but also the removal of faeces. However, feces are not only on the surface of the felt or quilt, but also mostly inside, so although it can be removed by tapping the surface with a vacuum cleaner, it is not easy to remove it sufficiently.

The dust mites can be killed by raising the temperature. It is publicly pointed out from the experimental results that if the temperature is kept at 50 ° C for 20 minutes, the dust mites of the dust mites in the house will be 100% dead. Moreover, the dust mites attached to the thin sheets and the like are The water flow or mechanical action of the laundry can be removed by more than 99%. However, in the case of a blanket or quilt, the dust mites are internal, so the water flow or mechanical action of the laundry is difficult to reach, and it is difficult to remove by washing. However, the feces of the dust mites, which are allergens, are water-soluble, so that they can be removed by passing water through the inside of the felt or quilt. Therefore, after maintaining the high temperature to make the dust mites die, drying the allergens (dust corpses or feces) after washing can effectively eliminate dust mites and allergens.

As a washing method of a quilt of a washing machine, there is a drum type washing machine which suppresses movement of an inner cotton lump and prevents deformation. Moreover, there is a washing and drying machine which promotes the drying of the contact surface between the drum and the quilt, shortens the drying time or reduces the uneven drying. In addition, there is a washing machine that supplies warm water to the washing tank and causes the dust mites attached to the laundry to die.

An example of the operation control flow in the case where the washing and drying process is set in the washing and drying machine is shown in FIG. When the power switch is cut, the control device performs status confirmation to perform initial setting of the washer dryer (S101). When the user selects the laundry drying stroke and then presses the start switch (S102), the control device performs a washing step (sequential washing, rinsing, dehydration) (S103). After the washing step is completed, a drying step (high-speed dehydration, warm air drying) is performed (S104), and the drying step is terminated after the predetermined time is detected, and the drying operation is terminated. Washing and drying are carried out in sequence as described above.

In order to use the above-described washing and drying machine to perform the operation of effectively removing the above-mentioned dust mites or allergens (dust mites), first, it is possible to set after putting a dried felt or quilt into the washing and drying machine. Drying trip The operation of blowing warm air to the blanket or quilt to raise the temperature is carried out to make the dust mites die. At this time, in the general washing and drying machine, the drying is automatically detected. Since the dry blanket or quilt is placed, the operation will be completed in a short time, and it is very likely that the blanket or the quilt cannot be warmed up sufficiently. temperature. Therefore, it is better to set the drying operation time manually, but the user does not know how the temperature of the felt or the quilt rises. If the time is too short, the temperature does not rise sufficiently. If the time is too long, the temperature will be too high and the blanket or quilt will be damaged by heat. As described above, there is a problem that it is difficult to appropriately set the drying operation time. Further, after the drying operation is completed, the laundry drying process is set, and the washing operation (removal of allergens) and the drying operation are performed. Therefore, it is necessary to set the drying stroke first, and after the drying operation is completed, the setting of the washing and drying stroke is performed, which has a problem of troublesome procedures.

In the above-mentioned Patent Document 1, a warm water supply device using a water-absorbing heat-generating material (synthetic zeolite) is provided, and warm water of 50 to 60 ° C is generated in a short time to be supplied to the washing tank. However, 10 kg of synthetic zeolite is required to heat 15 L of water from 15 ° C to 50 ° C. In the invention of the patent document 1, in order to remove the dust mites of the felt or the quilt, the entire amount of the felt or the quilt is soaked in warm water, and the amount of water of about 50 L is required. Therefore, it is necessary to have 30 to 40 kg of synthetic zeolite. If the water heater is installed in a washing machine, the size of the casing will be increased, which will become a problem in the setting of the home.

Further, in the above Patent Document 2, an invention relating to a washing machine and a control method capable of removing an allergen of a laundry is described. However, since a steam generator is additionally required, the size of the casing is large.

Here, the object of the present invention is to provide an effective blanket or quilt A washing and drying machine that removes dust mites or feces from the class and does not enlarge the size of the frame.

In order to solve the above problems, the washing and drying machine of the present invention is, as an example, a washing and drying machine comprising: an outer tank; a washing and dewatering tank, which is disposed in the outer tank so as to be rotatable and accommodates laundry; a driving means comprising: an electric motor for driving the washing and dewatering tank; a frame body configured to support an outer surface of the outer tank; and an air supply passage having a washing direction for the air for drying the washing and dewatering tank An outlet of the dewatering tank opening and an inlet opening toward the outer tank opening; an air heating means provided in the middle of the air blowing passage; and a blower fan disposed on an upstream side of the air heating means when viewed from a flow of air; And a control means for controlling the driving means, the air heating means, and the blower fan, wherein the control means performs the drying step by using the air heating means and the blower fan, and the control means uses the air heating means and The air blowing fan performs a hot air processing step of heating the dried laundry, and the hot air is in the foregoing Laundry step after the implementation of processing steps.

According to the present invention, it is possible to provide a washing and drying machine which can effectively remove dust mites or faeces such as a felt or a quilt, and which does not increase the size of the casing.

1‧‧‧ frame

2‧‧‧Operator panel

3‧‧‧Power switch

4, 5‧‧‧ operation switch

6‧‧‧ display

7‧‧‧Washing and dewatering tank

8‧‧‧ outer trough

9‧‧‧

10‧‧‧ motor

11‧‧‧ telescopic tube

12‧‧‧Drainage

13‧‧‧Drainage pipe

14‧‧‧Drain valve

15‧‧‧Overflow

16‧‧‧suspension suspension

17‧‧‧Laundry container

18‧‧‧Water supply pipe connection

19‧‧‧Air supply path

20‧‧‧ suction port

21‧‧‧ snake tube

22‧‧‧Drying filter

23‧‧‧ openings

24‧‧‧Air supply unit

25‧‧‧Drive motor

26‧‧‧fan impeller

27‧‧‧heater

28‧‧‧Wind wind tunnel

29‧‧‧Pin

30‧‧‧ front blowout

31‧‧‧ Temperature Sensor

32‧‧‧ clothing

33‧‧‧Control device

50‧‧‧Microcomputer

51‧‧‧Operation button input circuit

57‧‧‧ buzzer

61‧‧‧Compressor

62‧‧‧Evaporator

63‧‧‧Condenser

64‧‧‧Expansion mechanism

Fig. 1 is an external view of a washer-dryer according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view showing the internal structure of a washer-dryer according to an embodiment of the present invention.

Fig. 3 is a block diagram showing a control device for a washing and drying machine according to an embodiment of the present invention.

Fig. 4 is a flow chart showing the basic control of the case where the washing and drying machine according to the embodiment of the present invention sets the allergen removal stroke.

Fig. 5 is a view showing an example of a detailed control flow of the hot air heating step of the allergen removal stroke according to the embodiment of the present invention.

Fig. 6 is a perspective view showing the internal structure of the heat pump type washing and drying machine according to the embodiment of the present invention, and cutting a part of the casing.

Fig. 7 is a basic control flow of a case where a washing and drying process is set in a conventional washing and drying machine.

Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.

1 is an external view of a drum type washing and drying machine, and FIG. 2 is a cross-sectional view showing an internal structure. In each of the drawings, reference numeral 1 is a frame that constitutes an external appearance, and the frame 1 is attached to a base 1h of a square shape, and left and right side plates 1a and 1b (not shown), a front cover 1c, a back cover 1d, and The upper cover 1e and the lower front cover 1f are formed.

The left and right side plates 1a and 1b are combined with a U-shaped upper reinforcing material, a front reinforcing material, and a rear reinforcing material (not shown), and include a base 1h to form a box-shaped frame 1 and have a sufficient frame body. Strength of.

Reference numeral 9 is a door for plugging the input port, and the input port is provided at the center of the front cover 1c for feeding in and out, and is provided with a hinge of the front reinforcing member to openably and closably support the door. The door 9 is opened by pulling the door opening handle 9a to release the locking mechanism (not shown), and the door 9 is pressed against the front cover 1c to be locked and closed. The front reinforcing material has a circular opening for feeding in and out of the air, concentrically with the opening of the outer groove to be described later.

Reference numeral 2 denotes an operation panel provided at the center of the upper portion of the casing 1, and includes a power switch 3, operation switches 4 and 5, and a display 6, and the operation panel 2 is electrically connected to a control device 33 provided at a lower portion of the casing 1.

Reference numeral 7 is a cylindrical laundry and dewatering tank (rotary drum) rotatably supported, and has a plurality of through holes for water passage and ventilation at its outer peripheral wall and bottom wall, and clothes for the front end face. The opening 7a for entry and exit.

A fluid balancer 7b integrated with the washing and dewatering tank 7 is provided outside the opening 7a. A lifter 7c extending in the axial direction is provided on the inner side of the outer peripheral wall, and when the washing and dewatering tank 7 is rotated during washing and drying, the clothes and the lifter 7c are repeatedly lifted up along the outer peripheral wall by centrifugal force, and The action of falling by gravity. The center axis of rotation of the washing and dewatering tank 7 is horizontal or inclined so that the opening portion 7a side is higher.

Reference numeral 8 is a cylindrical outer groove which is internally wrapped with a washing and dewatering tank 7 and has an opening at the front, and is located at the outer side of the rear end face. A motor 10 is mounted. The rotating shaft of the motor 10 passes through the outer tub 8 and is coupled to the washing and dewatering tank 7.

An outer tank cover 8a is provided at the front opening to store water in the outer tank. The opening portion 7a for feeding in and out of the laundry is provided at the center of the front side of the outer tank cover 8a. The opening portion 7a and the opening portion provided in the front reinforcing member are connected by a rubber telescopic tube 11, and the door 9 is closed to seal the outer groove 8 with water.

A drain port 12 is provided at a lowermost portion of the bottom surface of the outer tank 8, and a drain pipe 13 is connected. A drain valve 14 is provided in the middle of the drain pipe 13, and water is supplied to the outer tank 8 by closing the drain valve to supply water, and the drain valve is opened to discharge the water in the outer tank 8 to the outside of the machine. An overflow port 15 is provided on the outer peripheral portion of the front side of the outer tank cover 8a, and is connected to the drain pipe 13 at the downstream side of the drain valve 14 by an overflow pipe.

The outer groove 8 is configured such that the lower side is configured as a suspension shock absorber 16 (consisting of a coil spring and a damper) fixed to the base 1h for shockproof support. Further, the upper side of the outer tub 8 is supported by a supplement spring (not shown) attached to the upper reinforcing member to prevent the outer tub 8 from falling in the front-rear direction.

Reference numeral 17 is a laundry detergent container provided on the left side of the upper portion of the casing 1, and a pull-out type laundry detergent tray is attached from the front opening. The laundry detergent container 17 is fixed to the upper reinforcing material of the frame 1.

On the rear side of the laundry detergent container 17, a water supply solenoid valve 18, a warm water supply pump, a water level sensor (not shown), and the like are provided. The upper cover 1e is provided with a water supply pipe connection port 18a from the waterway plug and a suction pipe connection port 18b for remaining warm water. The water supply solenoid valve 18 has a main water supply solenoid valve, a soft fine water supply solenoid valve, a cooling water supply solenoid valve, and the like. wash The clothing container 17 is connected to the main water supply solenoid valve and the warm water supply pump, and the other is connected to the outer tank 8, by opening the main water supply solenoid valve, or by operating the warm water supply pump, and putting it into the laundry detergent The laundry detergent in the container 17 supplies the washing water together with the outer tank 8 and the washing and dewatering tank 7. Further, by opening the soft fine water supply solenoid valve, the washing water is supplied to the outer tub 8 together with the softener which is put into the laundry detergent container 17.

Reference numeral 19 is an air passage provided on the inner side of the back surface of the casing 1 in the longitudinal direction, and the lower portion of the air passage is connected to the intake port 20 provided on the lower surface of the outer tank 8 by a rubber bellows tube 21. A water-cooling dehumidifying mechanism (not shown) is incorporated in the air supply passage 19, and the cooling water supply solenoid valve and the water-cooling dehumidifying mechanism are connected by a cooling water pipe, and the cooling water supply electromagnetic valve is opened to supply the cooling water to the water-cooling dehumidifying mechanism.

The cooling water flows through the wall surface of the air supply passage 19, flows down, enters the outer tank 8 from the intake port 20, and is discharged from the drain port 12. Further, unlike the water-cooling dehumidification, the main water supply solenoid valve and the air supply passage 19 are connected by washing the cleaning pipe in the air passage, and the main water supply solenoid valve is opened to supply the washing water to the air supply passage 19. The washing water flows through the wall surface of the air supply passage to wash off the dust adhering to the wall surface.

The upper portion of the air supply passage 19 is connected to the filter duct 35, and the filter duct 35 is provided on the upper right side of the casing 1 in the front-rear direction. An air passage switching valve is provided at a connection portion of the upper portion of the air supply passage 19 to the filter air passage 35. An opening is formed in the front surface of the filter duct 35, and a drawing type drying filter 22 is inserted into the opening.

The air entering the filter duct 35 from the air supply passage 19 flows into the drying The mesh filter 22a of the filter 22 is dried to remove cotton chips. The cleaning of the drying filter 22 is performed by extracting the drying filter 22 and taking out the mesh filter 22a. Further, an opening portion 23 is formed in an inner surface of the insertion portion of the drying filter 22 of the filter duct 35. The opening portion 23 is connected to an intake valve 23a, and the other end of the intake valve 23a is connected to the air blowing unit 24. The suction port is connected.

The blower unit 24 is composed of a drive motor 25, a fan impeller 26, and a fan case 24a. A heater 27 is housed in the fan case 24a to heat the air sent from the fan impeller 26.

The heater 27 is a switchable input, and the heater of this embodiment has a strong mode and a weak mode. The air blowing unit 24 is connected to the warm air duct 28 . The warm air duct 28 is connected to the front air outlet 30 provided in the outer tank cover 8a via a rubber bellows pipe 28a and a bellows pipe joint 29.

In the present embodiment, the air blowing unit 24 is disposed on the upper right side of the casing 1, so that the front air outlet 30 is disposed at the right oblique position of the outer tank cover 8a, and the distance to the front air outlet 30 is minimized. To minimize pressure loss or heat loss.

A temperature sensor 34 is provided at the outlet of the drain port 12, a temperature sensor 32 is provided at the inlet of the blower unit 24, and a temperature sensor 31 is provided at the outlet of the heater 27.

The flow of the wind during the drying operation is as follows. When the blower unit 24 is operated and the heater 27 is energized, warm air is blown into the washing and dewatering tank 7 from the front blower port 30, and moist laundry is blown to warm the water to evaporate from the laundry. During the drying operation, the washing and dewatering tank 7 is rotated forward and backward, so The action of lifting the clothes by the lifter 7e and dropping it by gravity is repeated to make the warm air evenly spread over the clothes. The high-temperature and high-humidity air flows into the outer tank 8 from the through hole provided in the washing and dewatering tank 7, and is sucked into the air passage 19 from the air inlet 20, and flows downward from the air passage 19. The cooling water from the water-cooling/dehumidifying mechanism flows down on the wall surface of the air supply passage 19, and the high-temperature and humid air comes into contact with the cooling water to be cooled and dehumidified, and becomes dry low-temperature air and enters the drying filter 22. The cotton dust is removed by the mesh filter 22a provided in the drying filter 22, and then sucked into the air blowing unit 24. Then, after being pressurized by the blower unit 24, the heater 27 is again heated and blown into the washing and dewatering tank 7 to circulate. Between the mesh filter 22a and the blower unit 24, a temperature sensor 32 is provided which measures the temperature of the circulating air.

Figure 3 is a block diagram of the control device 33 of the drum type laundry dryer of the present embodiment. The 50-series microcomputer is connected to the operation button input circuit 51 or the water level sensor and the temperature sensor connected to the operation buttons 4 and 5, and receives various information signals of the button operation or the washing step and the drying step of the user. The output from the microcomputer 50 is connected to the drive circuit 54, and is connected to the water supply solenoid valve 18, the drain valve 14, the motor 10, the blower unit 24, the heater 27, and the like, and controls such opening and closing, rotation, and energization. Further, it is connected to a seven-segment display light-emitting diode or a liquid crystal display 6 or buzzer 57 for letting the user know the operating state of the washing and drying machine.

The microcomputer 50 performs the washing and drying control process as shown in FIG. 4 when the power switch 3 is pressed to cut in the power. Figure 4 shows the "allergen removal route" (an example) for removing blankets or quilts from blankets or quilts. Action flow.

When the user puts laundry into the washing and dewatering tank 7, where it is a felt or a quilt, and closes the door 9, when the power switch 3 is pressed, the microcomputer 50 performs the state confirmation and initial setting of the washing and drying machine (S110). The display 6 of the operation panel 2 is turned on, and the allergen removal process is set in accordance with an instruction input from the operation button 5 (S111).

When the start button 4 of the operation panel 2 is pressed, the hot air processing step (S112) is performed. In the hot air treatment step, the blower unit 24 is operated to rotate the motor 25 and the fan impeller 26 (S112A). Next, the heater 27 is energized (S112B), and the washing and dewatering tank 7 is rotated at a predetermined number of revolutions (S112C), and the warm air is blown to the laundry to raise the temperature of the laundry. The output of the heater 27 is a variable-varist heater that causes the heater to be in a weak mode so that the temperature of the laundry does not rise too high.

Further, the heater 27 may be in a strong mode in order to shorten the time of the hot air treatment step. However, the hot air treatment step causes the temperature of the dried laundry to rise, so that the surface temperature of the laundry is too high and the temperature is caused by the damage caused by the temperature. Here, a temperature sensor 31 is provided between the heater 27 and the front air outlet 30 to detect the temperature of the warm air, and when the warm air temperature exceeds, for example, 70 ° C, the heater 27 is made into a weak mode (or OFF mode). can. The warm air is circulated by the flow of the wind during the above-described drying operation, but in the hot air treatment step S112, since the laundry is heated and dried, the dehumidification of the cooling water is not required.

The rotation direction of the washing and dewatering tank 7 may be a single direction or a reverse front and back rotation. Moreover, the number of revolutions of the washing and dewatering tank 7 can also be, for example, per minute The clock changes from around 40 to about 100 turns. The blanket or quilt is folded into the laundry and dewatering tank 7 due to its large size, and occupies most of the volume of the washing and dewatering tank 7, resulting in less movement of the lifter 7c to lift and fall. Here, when the number of revolutions of the washing and dewatering tank 7 is made higher than the number of revolutions in the drying step, for example, when the centrifugal force is pushed to the wall surface of the washing and dewatering tank 7, the center portion of the laundry which is difficult to reach by the warm air may appear. Space, warm wind will enter from this space, so it can effectively increase the temperature of the whole laundry. Further, the air blowing unit 24 is made into a high pressure type (the fan impeller is rotated at a high speed), and the area of the front air outlet 30 is reduced, whereby the high speed warm air from the front air outlet 30 is blown into the washing and dewatering tank 7. Thereby, the warm wind can easily enter the gap of the folding of the laundry, and the temperature rise inside the laundry can be accelerated.

The time of the hot air treatment step is carried out until the dust mites hidden in the blanket or quilt are dead. Specifically, as described above, the dust mites that are inhabited in the house will be 100% dead after being left at 50 ° C for 20 minutes, so it takes at least 20 minutes from the time when the temperature of the lowest part of the laundry reaches 50 ° C. The temperature of the laundry is delayed compared to the surface directly blown by the warm air, but it is difficult to detect the internal temperature. Here, the relationship between the time when the warm air is blown to the laundry (the thickest one can be considered) and the temperature of the inside (the portion where the temperature rises the slowest) is investigated in advance, and the internal temperature after the heater 27 is energized is experimentally determined. Time T reaching 50 °C. Then, 20 points are added to the time. When the amount is exceeded, 30 minutes or more is added to set the time for the hot air treatment step. The time T is affected by the capacity of the heater 27 or the air volume of the air blowing unit 24, so it can of course be set in accordance with the specifications of the washing and drying machine.

When the elapsed time after the heater 27 is energized is, for example, T+30 minutes or more (S112D), the energization of the heater 27 and the rotation of the blower unit 24 and the washing and dewatering tank 7 are stopped, the hot air processing step is terminated, and the washing step is performed ( S113). The washing step is the same as the case of cleaning the general laundry. Although not described in detail, it is simply carried out in sequence: the water and the laundry detergent are supplied into the outer tank 8, and the washing and dewatering tank 7 is rotated for washing; Thereafter, water is supplied to the outer tank, and the washing and dewatering tank 7 is rotated (usually twice); and the washing and dewatering tank 7 is rotated at a high speed.

The washed or rinsed water will enter the interior of the laundry, allowing the internal dust mites to dissolve in the water and be washed away. Moreover, the dust corpse system is pulverized by mechanical action in the laundry or dehydration, and is excluded from the laundry together with the water entering the inside of the laundry. Further, dehydration may be completed in a short time when the laundry drying process is set. Moreover, in the hot air treatment step (S112), not only the laundry, but also the parts such as the washing and dewatering tank 7 or the outer tank 8 are heated, so that the water supplied by the washing in the washing step (S113) is washed. Or the parts are heated to raise the temperature of the water. On the surface of laundry (quilt or blanket), it is attached with sebum or dandruff and other sebum stains, but these are easy to remove with high water temperature, which has the advantage of high washing effect of laundry. .

After the washing step is completed, a drying step (S114) is carried out. In the drying step, first, high-speed dehydration is performed at a predetermined time. After the completion of the dehydration, the blower unit 24 is operated to energize the heater 27, and while the laundry/dewatering tank 7 is rotated, the warm air is blown to the laundry. Since the laundry in the drying step contains moisture, the moisture heated by the warm air evaporates and becomes High temperature and humidity. In order to dehumidify the water, cooling water flows through the water-cooling dehumidification mechanism. After the drying is detected, the drying step is terminated and the operation is ended.

An example of the method of detecting the end of drying will be described below. When the evaporation of moisture from the laundry is large, the amount of heat exchange of the cooling water is large, so the temperature of the cooling water after the heat exchange is higher than the supply temperature. As the drying progresses, the amount of water evaporated will decrease, and the amount of heat exchange of the cooling water will decrease, so the temperature of the cooling water will decrease. On the other hand, the warm air temperature after passing through the air supply passage 19 is almost constant when the water is evaporated a lot, but gradually increases as the amount of moisture evaporated decreases as the drying progresses. The temperature of the cooling water after the heat exchange is detected by the temperature sensor 34, and the temperature of the warm air after passing through the air supply passage 19 is detected by the temperature sensor 32, whereby the temperature difference detected by the two can be detected. The end of drying. Alternatively, a humidity sensor may be disposed between the drying filter 22 and the air blowing unit 24 to detect the end of drying by detecting the humidity of the circulating warm air.

At the end of the drying step, the temperature of the laundry is near the temperature of the warm air temperature from the front outlet 30. As described above, the maximum temperature of the warm air is 70 ° C, so the temperature of the laundry also rises to nearly 70 ° C. Therefore, it also has the sterilization effect of laundry.

As described above, according to the present embodiment, by performing the hot air treatment step at a high temperature before the washing step, the thick laundry which becomes the dust mites of the felt or the quilt can be made high temperature even in the short time. The dust mites died. Thereafter, by performing the washing step, the corpses or feces of the dust mites inside the laundry can be washed away. As mentioned above, a laundry dryer can be provided, which has There is a dedicated washing and drying process that not only makes the surface of the blanket or quilt clean, but also removes and removes the dust mites or faeces that are inhabited inside.

In the operation flow of Fig. 4, the end of the hot air treatment step is judged by the elapsed time after the heater 27 is energized. The elapsed time is set based on the time T at which the thick laundry which is considered to have the slowest temperature rise reaches 50 °C. However, in the case where the laundry is thin, the temperature of the laundry is too high, and there is a possibility of causing damage to the laundry. Here, in order to prevent the temperature of the laundry from being excessively high, an example of the operational flow of the hot air treatment step (S120) using the temperature sensor is shown in FIG. The same reference numerals as in FIG. 4 are denoted by the same operations, and description thereof will be omitted.

From the first after the energization of the heater 27 is stopped, it is divided (S123) by whether or not a predetermined time (for example, 20 minutes) has elapsed. When the elapsed time exceeds 20 minutes, the end processing is performed (S130), and the hot air processing step is ended. When the process S130 is completed, the energization of the heater 27 and the stop of the rotation of the blower unit 24 and the washing and dewatering tank 7 are stopped. When the elapsed time is within 20 minutes, the process proceeds to S124.

The difference is detected by whether or not the detected temperature of the temperature sensor 31 is, for example, a threshold value of 78 ° C or higher (S124). When the temperature is 78 ° C or higher, the blower unit 24 is continuously operated, and the energization of the heater 27 is stopped (S131). After a predetermined time (for example, 5 minutes) elapses after the energization is stopped (S132), the process returns to S112C to energize the heater. The threshold value is 78 ° C, which is set to prevent the laundry from being damaged by the high temperature and warm wind blowing on the laundry. The temperature of the circulating air is made by stopping the energization of the heater 27 and operating the blower unit 24 decline.

The difference is processed (S125) with whether the detected temperature of the temperature sensor 32 exceeds, for example, a threshold of 50 °C. In the case where the temperature is less than 50 ° C, the heater 27 is energized back to S112C. In the case of 50 ° C or more, the process proceeds to S126.

Whether or not the time after the start of the hot air treatment step passes through a threshold (for example, 90 minutes) is diverged (S126). When 90 minutes have elapsed, the end processing (S130) is executed to end the hot air processing step. The operation flow of Fig. 5 determines the end of the hot air treatment step by temperature. However, depending on the situation, there is a possibility that the hot air processing step will not end because it becomes an infinite loop. Here, the maximum time for the hot air treatment step is set to 90 minutes in the present embodiment, and when the threshold value is exceeded, the hot air treatment step is forcibly terminated. Moreover, the longest time is set so that the laundry can be kept at 50 ° C or more for 20 minutes even in the worst conditions (in the case where it is difficult to warm the laundry at a low temperature and the drying filter is clogged and the air volume is lowered). More than that.

When the elapsed time is 90 minutes or less, the air blowing unit 24 is continuously operated, and the energization of the heater 27 is stopped (S127).

From the first after the energization of the heater 27 is stopped, the divergence processing is performed by whether or not 20 minutes have elapsed (S128). When the elapsed time exceeds 20 minutes, the end processing is executed (S130), and the hot air processing step is ended. If the elapsed time is within 20 minutes, the process proceeds to S129.

The difference is detected by whether or not the detected temperature of the temperature sensor 32 has not reached, for example, a threshold value of 45 ° C (S129). In the case of 45 ° C or more, the process returns to S128, and the heater 27 is not energized and the air supply is continued. In the case where the temperature is less than 45 ° C, the process returns to the stage S112C and the heater 27 is energized.

Explain the basic thinking logic of this action flow. In the present embodiment, when the detected temperature of the temperature sensor 32 becomes 50 ° C or higher at S125, the lowest temperature of the laundry is 55 to 60 ° C, which is a temperature sufficient for the dust mites to die. Here, the energization of the heater 27 is stopped at S127, the blower unit 24 is operated, and the warmed warm air is circulated. Therefore, the temperature of the circulating warm air is gradually lowered, and the sensible heat of the laundry or the washing and dewatering tank 7 or the outer tank 8 does not cause the temperature of the laundry to drop sharply, even if the heater 27 is not energized, Maintain at 50 ° C or above for more than 20 minutes. Here, from the first after the energization of the heater 27 is stopped, the hot air treatment step is terminated after 20 minutes (S128). In other words, at the time of S127, the temperature of the laundry becomes 50 ° C or higher, and when the hot air treatment step S120 is completed at the time of 20 minutes from this, the laundry is maintained at a temperature of 50 ° C or more for 20 minutes or more. Therefore, the dust mites can be completely dead. As described above, by stopping the energization of the heater 27 in the middle of the hot air treatment step, the temperature of the laundry can be maintained at 50 ° C or higher without using unnecessary electric power. Moreover, the temperature of the laundry does not rise above the necessary level, so it does not cause damage to the laundry.

Further, in the normal operation, the detection temperature of the temperature sensor 32 does not reach 45 ° C in S129. However, if the temperature of the circulating air is lowered for some reason, the heater 27 is energized again in order to prevent the laundry temperature from reaching 50 °C.

The threshold value of the temperature described above is only an example, and may be appropriately set depending on the installation position of the temperature sensor or the structure of the washing and drying machine.

In this embodiment, although the drum type washing and drying machine is taken as an example, It can also be a vertical vertical washing and drying machine whose rotating shaft of the washing and dewatering tank is substantially vertical. In the case of the upright washing and drying machine, unlike the structure of the drum type washing and drying machine, the laundry input opening is opened in the upper part of the washing and dewatering tank, and the washing and dewatering tank is vertically disposed to rotate about the vertical axis. Further, a stirring wing is provided at the bottom of the washing and dewatering tank. Generally, during washing or rinsing, the rotation from the drive motor is transmitted to the agitating blades through the planetary gear reduction mechanism to rotate the agitating blades. At the time of dehydration, the rotation from the drive motor is directly transmitted to the washing and dewatering tank, and the washing and dewatering tank is integrated with the stirring blade to rotate. Therefore, there is provided a clutch mechanism that switches the power transmission path of the drive motor during washing, rinsing, and dehydration.

In the case of the allergen removal stroke, the laundry is a larger one such as a blanket or a quilt, and if the stirring blade is rotated during washing or rinsing, the portion in contact with the rotary wing may be injured. Therefore, in the hot air treatment step, the washing step, and the drying step, the washing and dewatering tank and the stirring blade are integrated to rotate. Since the operation flow of the allergen removal stroke is the same as that of the drum type washing and drying machine, the description thereof will be omitted, but the same effect can be obtained.

Further, although the water-cooling dehumidification method has been described as an example of the dehumidification method, it may be an air-cooling dehumidification method or an exhaust dehumidification method. The operation flow in the case of the air cooling dehumidification method is the same as that of FIG. 4 or FIG. 5.

In the case of the exhaust dehumidification method, the air is sucked by the air blowing unit, and the warm air heated by the heater is used to warm the laundry, and the warm air heated by the laundry is exhausted to the outside of the machine. Therefore, it is necessary to heat the outside air frequently, so that it is difficult to raise the temperature of the laundry as compared with the circulation method of the water-cooling and dehumidifying method. And, when the temperature of the laundry becomes 50 ° C or more, the heater is stopped. When it is electricity, it will become the air blowing to the laundry, which will lower the temperature of the laundry. Here, in the exhaust dehumidification system, before the temperature of the laundry reaches approximately 50 ° C, the heater is operated in a strong mode to accelerate the temperature rise of the laundry, and then the heater is switched to the weak mode, thereby The temperature of the laundry can be maintained above 50 °C. In this way, the allergen removal effect can be achieved in the same manner as the warm air circulation method like the water-cooling dehumidification method.

Although an example in which a heater is used as the heat source for drying is mentioned above, it is also possible to use a heat pump type.

Fig. 6 is an external view showing an embodiment of a drum type washing and drying machine equipped with a heat pump type heat source. Cut one part of the frame to understand the internal structure. The same reference numerals as in FIGS. 1 and 2 denote the same portions, and description thereof will be omitted.

A blower duct 19 is provided on the inner side of the back surface of the casing 1 in the longitudinal direction, and a lower portion of the blower duct is connected to an intake port provided below the back surface of the outer tub 8 by a rubber bellows. The upper portion of the air supply duct 19 is connected to the filter duct 35, and the filter duct 35 is provided on the upper rear side of the casing 1 in the vertical direction. A suction type drying filter is inserted into the filter duct 35. An evaporator 62 is provided on the downstream side of the filter duct 35, and an intake duct 38 is connected to the downstream side. The other end of the intake duct 38 is connected to the intake port of the blower unit 24.

The blower unit 27 is composed of a motor 25 for driving, a fan impeller, and a fan case 24a. A condenser 63 is housed in the fan casing 24a to heat the air sent from the fan impeller. The air blowing unit 24 is connected to the warm air duct 28 . The warm air duct 28 is made of a rubber bellows tube 28a and a bellows tube joint. The head 29 is connected to the front air outlet 30 provided in the outer tank cover 8a.

The compressor 61 is provided at a corner portion of the lower portion of the back surface of the casing 1. The refrigerant piping pulled out from the compressor 61 is connected to return from the condenser 63 to the compressor 61 via the evaporator 62. The refrigerant pipe between the condenser 63 and the evaporator 62 is provided with an expansion mechanism 64.

The refrigerant flow of the heat pump cycle is as follows. The high temperature and high pressure gas compressed by the compressor 61 is heat-exchanged with the air in the condenser 63. Thereafter, the refrigerant decompressed by the expansion mechanism 64 is evaporated in the evaporator 62 to return the low pressure gas to the compressor 61. Here, when the evaporator 62 evaporates the refrigerant, the humid air passing through the filter duct 35 is cooled and dehumidified, and is again heated in the condenser 63.

The air flow during the drying operation is as follows. The blower unit 24 is operated, and the compressor 61 of the heat pump is operated to heat the condenser 63, and the warm air is blown into the washing and dewatering tank 7 from the front air outlet 30, the wet laundry is blown, and the clothes are warmed to remove moisture. The clothes evaporate. The high-temperature and high-humidity air flows from the through hole provided in the washing and dewatering tank 7 to the outer tank 8, and is sucked into the blower duct 19 from the intake port, and flows from the bottom to the top of the blower duct 19 to enter the filter. Wind tunnel 35. The cotton swarf is removed by the mesh filter provided in the filter duct 35, and then enters the evaporator 62. The high-temperature and humid air is brought into contact with the low-temperature evaporator 62 to be cooled and dehumidified, becomes dry low-temperature air, enters the intake air passage 38, and is sucked to the air blowing unit 24. Then, the condenser 63 at a high temperature is heated again and blown into the washing and dewatering tank 7 to circulate.

The basic operation flow of the heat pump type is also the same as that shown in FIG. heat Compared with the heater type, the pump type takes time to make the heat pump cycle, so the temperature of the warm air rises slowly. Here, in the hot air treatment step, the rotation of the compressor 61 is maintained high before the temperature of the warm air reaches a predetermined temperature, for example, before reaching 60 to 70 °C. Thereby, the temperature of the laundry can be made 50 ° C or more in a relatively short period of time. Thereafter, the rotation of the compressor 61 is lowered to adjust the amount of heat generation. This is because the heat pump cycle is such that when the compressor 61 is stopped, even if the compressor is restarted, the warm air cannot be immediately sent out. Therefore, after the warm air reaches a predetermined temperature, the compressor 61 is preferably operated at a low speed to continue the operation of the compressor. .

In the heat pump mode, the temperature of the laundry can be maintained at 50 ° C or higher for more than 20 minutes, so that the dust mites can be eliminated in the same manner as the heater type, and then the dust mites or dust can be removed by washing and drying. An allergen such as sputum. Moreover, since the heat pump type can have a higher heating capacity with a lower input than the heater type, it is of course excellent in energy saving.

Claims (9)

A washing and drying machine comprising: an outer tank; a washing and dewatering tank, wherein the outer tank is arranged to be rotatable and accommodates laundry; and the driving means comprises an electric motor for driving the washing and dewatering tank; The air passage is configured to support the air for drying the laundry and dewatering tank, and has an outlet toward the opening of the washing and dewatering tank and an opening toward the opening of the outer tank; air heating means The air blowing fan is disposed in the middle of the air blowing passage and is heated; the air blowing fan is disposed in the middle of the air blowing passage; and the control means controls the driving means, the air heating means, and the air blowing fan, wherein the laundry is a drying machine capable of performing a washing step, a rinsing step, a dehydrating step, and a drying step, wherein the control means uses the air heating means used in the drying step and the air blowing fan to perform a hot air processing step of heating the laundry, and The washing step is performed after the aforementioned hot air treatment step. The washing and drying machine according to claim 1, further comprising temperature detecting means for detecting a temperature in the casing, wherein the control means controls the air heating means and the blower fan in response to a temperature detection result of the temperature detecting means . The washing and drying machine according to claim 1, wherein the air heating means is constituted by a heater having a strong mode and a weak mode, and the air heating means is configured to cause the heater to be in the hot air processing step The aforementioned strong mode operates. The washing and drying machine according to claim 2, wherein the air heating means is constituted by a heater having a strong mode and a weak mode, and the air heating means is configured to cause the heater to be in the hot air processing step The aforementioned strong mode operates. The washing and drying machine according to claim 1, wherein the control means performs the hot air processing step in the hot air processing step to maintain the minimum temperature in the laundry at 50 ° C or more for at least 20 minutes. The washing and drying machine according to claim 2, wherein the control means performs the hot air processing step in the hot air processing step to maintain the minimum temperature in the laundry at 50 ° C or more for at least 20 minutes. The washing and drying machine according to claim 2, wherein the control means detects that the temperature detecting means is higher than a predetermined threshold, and the air heating means is turned off or the heating function is weakened. The washing and drying machine according to claim 2, wherein the control means detects the ratio of the temperature detecting means When the threshold value is higher, the air heating means is turned off, and the control means ends the hot air processing step when a predetermined time elapses after the air heating means is turned off. The washing and drying machine according to any one of claims 1 to 8, wherein the control means controls the driving means to cause the washing and dewatering tank to be in a drying step as described above in the hot air processing step The rotation speed is also rotated at a higher rotation speed.