JP2006204656A - Washing and drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing and drying machine improving the cooling efficiency of a motor of an air blowing means circulating air for drying clothes. <P>SOLUTION: This washing/drying machine is provided with a rotary tub 5 rotatably provided in a water tub 3 elastically supported inside a casing 1 and storing clothes 4, a heat sink 21 dehumidifying damp air, a radiator 23 heating the air dehumidified by the heat sink 21, radiator/heat sink air ducts 24 and 22 (hereinafter, referred to as "air ducts") sequentially communicating the radiator 23, the rotary tub 5, and the heat sink 21, and an air blower 12 circulating the air in the air ducts and having a motor 34; and cools the motor 34 with the air guided from a position higher than the atmospheric pressure in the air ducts. When circulating high-temperature and large amount of air by the air blower 12, the motor 34 can be efficiently cooled, so that the motor 34 can be reduced in size by just that much of improvement of the cooling efficiency of the motor 34 to miniaturize the air duct constitution. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a washing / drying machine that performs washing / dehydration and drying in the same rotating tank.

  This type of conventional washing and drying machine will be described with reference to FIG.

  As shown in the figure, a cylindrical water tank 3 elastically supported by a plurality of suspensions 2 is provided inside a housing 1 of the washing / drying machine, and vibration of the water tank 3 during washing / dehydration is applied to the suspension 2. It is set as the structure absorbed. Inside the water tank 3, a cylindrical and horizontal axis type rotating tank 5 that accommodates an object 4 to be washed or dried (hereinafter referred to as clothing 4) is rotatably arranged, and a rotating shaft 6 a is rotated by a drive motor 6. Thus, the rotary tub 5 is driven to rotate.

  A plurality of baffles (not shown) for stirring clothes are provided on the inner wall of the rotating tub 5, and a plurality of small holes 5 a are provided on the peripheral wall of the rotating tub 5. On the front surface of the housing 1, there are provided an opening 1a through which clothes 4 are taken in and out and a door 7 for opening and closing the opening 1a. Similar openings 3 a and 5 b are also provided on the front side of the water tank 3 and the rotating tank 5, and the opening 3 a of the water tank 3 is water-tightly connected to the opening 1 a of the housing 1 by a bellows 8. The bottom of the aquarium 3 has a drain port 9 for discharging washing water, and is connected to a drain hose 11 via a drain valve 10, and its tip is led out of the machine.

  The blower 12 blows and supplies the warm air heated by the heater 13 from the air supply port 14 into the rotary tank 5. The circulation duct 15 dehumidifies the drying air that has passed through the rotary tank 5 and the water tank 3 and has one end connected to the exhaust port 16 at the bottom of the water tank 3 and the other end connected to the blower 12. . The water supply valve 17 controls water supply from a water supply hose 18 connected to a tap or the like of a water supply.

  In the above configuration, when the washing operation is performed, the door 7 is opened, the clothes 4 and the detergent are put into the rotating tub 5, and the operation is started. First, when the water supply valve 17 opens a water supply port (not shown) on the washing water side and a predetermined amount of water is supplied into the water tank 3 and the rotary tank 5, the drive motor 6 operates to rotate the rotary tank 5. The cleaning operation is performed. After a predetermined time, the drive motor 6 is stopped, the drain valve 10 is opened, and dirty water is drained from the rotary tank 5 and the water tank 3 and drained to a drainage place outside the machine via the drain hose 11. Next, water is supplied to the water tank 3 and the rotary tank 5 in the same manner as described above, and a rinsing operation is performed. When the rinsing is completed, the drain valve 10 is opened and drained, and then the rotating tub 5 is rotationally driven by the drive motor 6 at a high speed, whereby the clothes 4 are dehydrated.

  When the washing operation is completed as described above, the drying operation is started. In the drying process, while the rotating tub 5 is driven to rotate at a low speed by the drive motor 6 and the clothes 4 are stirred, the air heated by the heater 13 becomes warm air and is blown in the direction of arrow a by the blower 12, Through the air supply port 14, it is fed into the rotary tank 5 in the direction of arrow b.

  This hot air takes away moisture from the garment 4, then passes through the water tank 3 through the small hole 5 a of the rotating tub 5 and reaches the circulation duct 15 through the exhaust port 16.

  At this time, the water supply valve 17 opens a water supply port (not shown) on the cooling water side, and cooling water is poured into the circulation duct 15. When warm air containing moisture from the clothing 4 deprives moisture passes through the circulation duct 15, the water is cooled by the cooling water to cause moisture condensation, and the wet warm air is dehumidified, as shown by the arrows. Return to the blower 12 again. This cooling water and dew condensation water is drained out of the machine via the drain valve 10. By circulating hot air through the circulation path of the blower 12, the heater 13, the air supply port 14, the rotary tank 5, the water tank 3, the exhaust port 16, and the circulation duct 15, the clothes 4 in the rotary tank 5 can be dried. it can.

  In the above conventional configuration, the heat used for drying the garment 4 is all discarded to the outside by the cooling water poured into the circulation duct 15 or the heat radiation from the housing 1, and is not reused. It was.

Therefore, a compressor that compresses the refrigerant, a radiator that dissipates the heat of the compressed refrigerant, throttle means for reducing the pressure of the high-pressure refrigerant, and the reduced-pressure and low-pressure refrigerant generate heat from the surroundings. It has been proposed to provide a washing and drying machine with a heat pump device in which a heat absorber to be taken is connected by a pipe line so that a refrigerant circulates (see, for example, Patent Document 1). According to this configuration, moisture can be efficiently dried by condensing moisture evaporated from the clothing to the heat absorber, and the heat of the warm air containing moisture from the clothing is absorbed by the heat absorber. The heat of the refrigerant that is sent to the compressor via the air and is warmed by the compressor is radiated by the radiator and reheats the warm air, so that the heat can be effectively utilized.
Japanese Examined Patent Publication No. 6-75628

  However, in the configuration of the washer / dryer equipped with the conventional heat pump device, the compressor, the radiator, the throttle means, and the heat absorber are connected by a pipe line such as a copper tube to circulate the high-pressure refrigerant. The heat exchanger that forms a heat sink is usually a finned tube type, and its resistance to ventilation is larger than that of the electric heater system. Therefore, the motor that drives the blower that circulates the hot air is increased in size to increase the air volume. It is necessary to issue. As a result, the motor input increases and the temperature rises, and the use of a large motor increases the size of the air path, resulting in a lack of compactness. There was an indispensable problem.

  The present invention solves the above-mentioned conventional problems, and efficiently suppresses the temperature rise of the motor even at a large air volume, achieves a compact air passage configuration, and has excellent reliability, durability, and drying performance. The purpose is to provide a dryer.

  In order to solve the above-described conventional problems, a clothes drying apparatus of the present invention dehumidifies wet air, a water tank elastically supported in a housing, a rotary tank that is rotatably provided in the water tank and accommodates clothes, and A dehumidifying means, a heating means for heating the air dehumidified by the dehumidifying means, an air passage communicating the heating means, the rotating tub, and the dehumidifying means in order; The motor is cooled by air guided from a part higher than the atmospheric pressure in the air passage, and the motor temperature can be controlled during high-temperature and large-air volume circulation by the air blowing means. Therefore, the operation | movement which maintained the required rotation speed and an air volume is attained, and required drying performance can be obtained. Further, by using the latent heat of evaporation of the moisture in the humid air blown to the motor, the effect of cooling the motor is increased and the drying efficiency is improved. Further, since the reliability durability of the motor is improved, a washing / drying machine excellent in reliability, durability and drying performance can be realized. Further, since the motor can be reduced in size as the cooling efficiency of the motor is improved, the air passage configuration can be made compact.

  The washing and drying machine of the present invention can reduce the temperature rise of the motor efficiently without downsizing the motor of the air blowing means even when using the air blowing means that requires a large air volume, and can achieve a compact air passage configuration. Therefore, a washing / drying machine excellent in reliability, durability, and drying performance can be realized.

  According to a first aspect of the present invention, there is provided a water tank elastically supported in a casing, a rotary tank that is rotatably provided in the water tank and accommodates clothing, a dehumidifying means for dehumidifying wet air, and air dehumidified by the dehumidifying means Heating means, an air passage communicating the heating means, the rotating tub, and the dehumidifying means in order, and an air blowing means that circulates air in the air passage and has a motor. It is cooled by air guided from a part higher than the atmospheric pressure in the air passage, and the motor temperature can be controlled during the high temperature and large air volume circulation by the air blowing means, so operation that maintains the necessary rotation speed and air volume is possible. This makes it possible to obtain the necessary drying performance. Further, by using the latent heat of evaporation of the moisture in the humid air blown to the motor, the effect of cooling the motor is increased and the drying efficiency is improved. Further, since the reliability durability of the motor is improved, a washing / drying machine excellent in reliability, durability and drying performance can be realized. Further, since the motor can be reduced in size as the cooling efficiency of the motor is improved, the air passage configuration can be made compact.

  In particular, the second invention is provided with a case surrounding the motor of the first invention, and the case is disposed so as to be exposed to the outside air, and a gap is provided between the case and the motor to guide the air from the air passage. The motor is cooled by passing the air through the gap, and the motor can be efficiently cooled by passing the cooling air through the gap between the motor and the case. Further, since the case is exposed to the outside air, heat exchange with the outside air is performed, the cooling efficiency is further improved, and a washing / drying machine excellent in reliability, durability, and drying performance can be realized.

  According to a third aspect of the invention, in particular, the air blowing means according to the first or second aspect of the invention has a centrifugal fan and a scroll casing, and discharges air for cooling the motor in the vicinity of the downstream portion of the tongue of the scroll casing. Since there is a discharge part in the vicinity of the downstream part of the tongue which is a relatively low pressure part while being a part of the scroll casing higher than the atmospheric pressure, without greatly affecting the air flow characteristics for drying clothes, In addition, since the required air volume is ensured while minimizing the generation of noise, a washing and drying machine with excellent reliability, durability, and drying performance can be realized.

  According to the fourth aspect of the invention, in particular, there is provided a temperature detection means A for detecting the temperature of the air blown out from the rotating tub according to any one of the first to third aspects of the invention, and according to the temperature detected by the temperature detection means A. In addition to controlling the air blowing means, the temperature detecting means A is attached to an opening provided on the downstream side of the air blowing means. For example, the temperature of the clothes is detected based on a change in temperature detected by the temperature detecting means A. If the rotational speed of the blower is changed according to the degree of drying, wasteful power consumption can be suppressed. In addition, since the temperature detection means A is provided at the downstream opening, reliability and durability are ensured in order to minimize the generation of noise and ensure the necessary air flow without greatly affecting the dry air flow characteristics. In addition, it is possible to realize a washing / drying machine having excellent drying performance. Further, if the temperature detecting means A is provided in the opening communicating with the discharge section, the opening is only required at one place, and the influence on the dry air flow characteristics can be further reduced.

  In particular, the fifth invention is provided with a duct that communicates the air passage of any one of the second to fourth inventions with the inside of the case, and guides air for cooling the motor through the duct. Since the air can be brought into contact with the motor, the cooling efficiency is increased, and a washing and drying machine excellent in reliability, durability, and drying performance can be realized.

  In particular, the sixth invention is provided with a duct that communicates the air passage of any one of the first, third, and fourth inventions with the inside of the motor, and guides air for cooling the motor through the duct. Since the coil in the motor can be directly cooled by air, temperature control becomes easy, efficient motor cooling can be performed, and a washing and drying machine with excellent reliability, durability, and drying performance is realized. be able to.

  7th invention provided the temperature detection means B which detects the temperature of the motor of any one of 1st-6th invention, and it was made to control rotation of the said motor according to the output of the said temperature detection means B. Therefore, by detecting the temperature of the motor, it is possible to control the number of revolutions that keeps the upper limit of the operating temperature of the coil of the motor, and it is possible to perform efficient motor cooling excellent in temperature control system, reliability, A washing dryer having excellent durability and drying performance can be realized.

  The eighth invention comprises temperature detecting means B for detecting the temperature of the motor of the fifth or sixth invention, and a valve for changing the air volume of the air passing through the duct, and according to the output of the temperature detecting means B, The valve is controlled so that the upper limit of the coil temperature that can be used for the coil in the motor can be controlled. This makes it possible to perform efficient motor cooling with excellent temperature control and reliability. In addition, it is possible to realize a washing and drying machine excellent in durability and drying performance.

  The ninth aspect of the invention comprises the dehumidifying means and the heating means of any one of the first to eighth aspects of the invention by a heat pump cycle using a compressor, and dehumidification is performed by a dehumidifying means using a refrigerant. Compared with the electric heater method, the temperature of the hot air passing through the air blowing means is lower, so the motor cooling effect is increased, and the air flow can be made compact by reducing the amount of air with a smaller air blowing means. In addition, a washing / drying machine excellent in reliability, durability and drying performance can be realized.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is an external perspective view of a washing / drying machine according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of the washing / drying machine 1 as viewed from the back 1b, and FIG. FIG. 4 is a cross-sectional view of the blower unit of the washer / dryer, and FIG. 5 is a diagram showing the configuration of the heat pump device mounted on the washer / dryer and the flow of drying air. It is a system conceptual diagram.

  1 to 5, a cylindrical water tank 3 elastically supported by a plurality of suspensions 2 is provided inside a housing 1 of the washing and drying machine, and vibration of the water tank 3 during washing and dehydration is caused by the suspension 2. Absorb.

  Inside the water tank 3, a cylindrical and horizontal axis type rotating tank 5 that accommodates the clothes 4 is rotatably provided, and the rotating tank 5 is rotationally driven by a drive motor 6. On the front surface of the housing 1, there are provided an opening 1a through which clothes 4 are taken in and out and a door 7 for opening and closing the opening 1a. Similar openings 3 a and 5 b are also provided on the front side of the water tank 3 and the rotating tank 5, and the opening 3 a of the water tank 3 is water-tightly connected to the opening 1 a of the housing 1 by a bellows 8. A drain port (not shown) for discharging washing water is provided at the bottom of the water tank 3, and the drain port is connected to a drain hose 11 via a drain valve (not shown).

  Reference numeral 12 denotes a blower serving as a blowing means, and is provided on the outer peripheral surface of the water tank 3 so as to be positioned in a corner space formed by the upper surface 1 d of the housing 1 and the water tank 3. In the lower part of the back surface of the housing 1, a heat absorber 21 that is a heat exchanger constituting the heat pump device and serves as a dehumidifying means, and a heat absorption that is a part of a heat exchange air passage that causes air to flow through the heat absorber 21 in the direction of arrow c. An air flow path 22, a radiator 23 that is also a heat exchanger and serves as a heating means, and a radiator air path 24 that is a part of a heat exchange air path that causes air to flow in the direction of the arrow d through the heat radiator 23. It is arranged.

  Further, the heat absorber 21 and the radiator 23 are arranged side by side so as to be substantially C-shaped, and the heat absorber air passage 22 and the heat radiator air passage 24 communicate with each other through a circulation duct 25. The air passing through the radiator 23 efficiently flows in a substantially U shape. Further, since the heat absorber air passage 22, the heat radiator air passage 24, and the circulation duct 25 can be configured integrally and compactly, they are fixed to the lower back portion of the housing 1 as a unit.

  The drying air blown by the blower 12 passes through the heat sink 21 of the heat sink air passage 22 through the flexible connecting pipe 19 and passes through the radiator 23 of the radiator air passage 24 through the circulation duct 25. Then, after passing through the flexible connecting pipe 19 and the air passage 20 and entering the rotary tank 5 from the air supply port 14 as shown by the arrow b in FIG. The small tank 5a of the rotary tank 5 is returned to the blower 12 through the exhaust port 16 and circulates.

  As shown in FIG. 5, the heat pump device includes a vertical compressor 26, a radiator 23 that radiates heat of the compressed refrigerant, a throttle valve, a capillary tube, and the like for reducing the pressure of the high-pressure refrigerant. The throttle means 27 and the heat absorber 21 from which the reduced pressure and low pressure refrigerant takes heat from the surroundings are connected by a conduit 28 so that the refrigerant circulates, and the refrigerant flows in the direction of arrow e and circulates. And realize a heat pump cycle.

  The operation of the washing / drying machine having the above configuration will be described.

  In the washing process, with the drain valve (not shown) closed, water is supplied into the water tank 3 until a predetermined water level is reached, and the drive motor 6 rotates the rotating tank 5 containing the clothes 4 and the washing water. Wash. In the rinsing process after washing, water is supplied into the water tank 3 as in the washing process, and the garment 4 is rinsed by rotating the rotating tank 5. In the dehydration process, the drain valve is opened to drain water to the outside of the machine, and then the rotating tub 5 containing the clothing 4 is rotated at high speed by the drive motor 6 to dehydrate.

  In the drying process, when the vertical compressor 26 of the heat pump device is operated, the refrigerant is compressed, and the refrigerant circulates through the radiator 23, the throttle means 27, and the heat absorber 21 by this pressure. In the radiator 23, heat is released by the compression of the refrigerant, and in the heat absorber 21, the heat is absorbed by the refrigerant whose pressure is reduced by the expansion means 27. At this time, the blower 12 is activated, and warm air heated by the heat radiation of the radiator 23 is blown into the rotary tank 5 through the air supply path 14 from the air supply port 14. The rotating tub 5 is rotationally driven by a drive motor 6 and the clothes 4 are stirred up and down.

  The warm air blown into the rotating tub 5 deprives moisture when passing through the gap between the clothes 4, passes through the blower 12 through the exhaust port 16 of the water tub 3 in the wet state, and reaches the heat absorber air passage 22. When the wet warm air passes through the heat absorber 21, sensible heat and latent heat are removed, and the dehumidified air is separated into dry air and condensed water. The dry air enters the radiator air passage 24 through the circulation duct 25, is heated again by the radiator 23, becomes warm air, and circulates to the air passage 20. Condensed water is stored in a water storage chamber 29 provided in the lower part of the heat absorber 21, and is discharged from the drainage hose 11 to the outside of the machine via the drainage pump 30.

  In this way, by using the heat pump device, the heat absorbed by the heat absorber 21 is recovered by the refrigerant and again radiated by the radiator 23 to give the clothing 4 more heat than the energy input to the vertical compressor 26. Therefore, drying efficiency can be improved, so that drying time can be shortened and energy saving can be realized.

  Further, the blower 12 has a scroll casing 32 using a centrifugal fan 31 that is rotationally driven by a motor 34, and air for cooling the motor 34 to a portion having a pressure higher than the atmospheric pressure near the downstream of the tongue 33. The discharge part 35 which discharges is provided.

  Further, a case 36 surrounding the motor 34 is provided, the case 36 is exposed from the housing 1 so as to be exposed to the outside air, and a gap G through which air for cooling the motor 34 passes is provided between the case 36 and the motor 34. Yes. As a result, the discharge portion 35 is provided in the vicinity of the downstream portion of the tongue 33, which is a relatively low pressure portion, although it is a part of the scroll casing 32 that is higher than the atmospheric pressure, so that the generated noise is not affected greatly. The required air volume can be secured by minimizing the airflow.

  In addition, the motor 34 can be efficiently cooled by passing the air for cooling the motor 34 through the gap G between the motor 34 and the case 36, and the case 36 is exposed from the housing 1 to the outside air. Heat exchange with the outside air can increase the efficiency of cooling. Thus, since the temperature of the motor 34 can be controlled when the centrifugal fan 31 is circulating at a high temperature and a large air volume, the operation can be performed while maintaining the necessary rotation speed and the air volume, so that the drying performance can be maintained.

  In addition, the cooling effect of the motor 34 is increased by using the latent heat of vaporization of the moisture in the humid air blown to the motor 34, so that the effect of improving the drying efficiency can be obtained and the reliability durability of the motor 34 can be improved.

  In this embodiment, a heating and dehumidifying method using a heat pump device is used, but a heating method using an electric heater may be used. Further, the refrigerant used in the heat pump device is not limited to the chlorofluorocarbon system, and natural refrigerants such as carbon dioxide, isobutane, and propane may be used.

  Moreover, in the said embodiment, although the washing-drying machine was demonstrated to the example, you may apply this invention to a drying exclusive use machine. Moreover, in this Embodiment, although the vertical compressor was used for the heat pump apparatus, you may use a horizontal compressor.

(Embodiment 2)
FIG. 6 is a cross-sectional view of the blower of the washing / drying machine according to the second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted.

  In the present embodiment, as shown in FIG. 6, temperature detection means A37 for detecting the temperature of the drying air blown out from the rotary tub 5 is mounted on the opening 32a that is provided on the downstream side of the blower 12 and communicates with the discharge portion 35. Then, the degree of drying of the garment 4 is determined from the temperature change of the air detected by the temperature detecting means A37, and the motor 34 and the vertical compressor 26 for driving the centrifugal fan 31 are controlled by a control means (not shown) according to the determination. It is what you do.

  As described above, according to the present embodiment, for example, the degree of drying of clothing is determined from the change in temperature detected by the temperature detecting means A37, and the rotational speed of the centrifugal fan 31 is changed according to the degree of drying. In this case, useless power consumption by the motor 34 can be suppressed. Further, since the temperature detecting means A37 is provided in the opening 32a communicating with the discharge portion 35, the necessary air volume is obtained without greatly affecting the dry air volume characteristics of the garment 4 and minimizing the generation of noise. Can be secured.

(Embodiment 3)
FIG. 7 is a cross-sectional view of a blower of a washing / drying machine according to the third embodiment of the present invention. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In the present embodiment, as shown in FIG. 7, a discharge portion 35 that discharges cooling air for cooling the motor 34 is provided in a part of the case 36, and the air passage 12 a on the downstream side of the discharge portion 35 and the centrifugal fan 31. A duct 38 communicating with the motor 34 is provided so that the cooling air is guided to the motor 34 through the duct 38. By providing the duct 38, all the cooling air flowing out from the air passage 12a is supplied to the motor. Therefore, the cooling efficiency of the motor 34 can be improved.

(Embodiment 4)
FIG. 8 shows a cross section of the blower 12 of the washing / drying machine according to the fourth embodiment of the present invention. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In the present embodiment, as shown in FIG. 8, a duct 38 communicates the air passage 12 a on the downstream side of the centrifugal fan 31 with the inside of the motor 34 to guide cooling air into the motor 34. The inner coil 39 is directly cooled and then exhausted from the exhaust port 34b. The motor 34 is excellent in temperature controllability and can be efficiently cooled.

(Embodiment 5)
FIG. 9 is a cross-sectional view of the blower of the washing / drying machine according to the fifth embodiment of the present invention, and FIG. 10 shows time characteristics of the motor temperature and the motor rotation speed of the blower. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In this embodiment, as shown in FIGS. 9 and 10, a temperature detection means B40 for detecting the temperature of the motor 34 and a control means for controlling the rotation of the motor 34 in accordance with the output of the temperature detection means B40 (FIG. (Not shown) is provided, and control is performed to lower the input so as to decrease the rotation speed of the motor 34 as the temperature of the coil 39 of the motor 34 approaches the use limit value, so that the temperature rise of the coil 39 is suppressed. . On the other hand, when the temperature of the coil 39 falls, control is performed to increase the rotational speed of the motor 34.

  As described above, according to the present embodiment, by detecting the temperature of the motor 34 by the temperature detecting means B40, it is possible to perform the rotational speed control that keeps the upper limit value of the usable coil temperature, and the temperature control system is excellent. Efficient motor cooling can be performed.

(Embodiment 6)
FIG. 11 is a sectional view of a blower of a washing / drying machine according to the sixth embodiment of the present invention, and FIG. 12 shows the motor temperature of the blower and the time characteristics of valve opening / closing. In addition, about the same part as the said embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In the present embodiment, as shown in FIG. 11, the temperature detecting means B40 for detecting the temperature of the motor 34, the valve 41 for changing the amount of air passing through the duct 38 communicating with the air passage 12a and the motor 34, and the temperature Control means (not shown) for controlling the opening and closing of the valve 41 according to the output of the detection means B40 is provided, and the valve 41 is controlled in the opening direction as the temperature of the coil 39 of the motor 34 approaches the use limit value. Then, more cooling air is introduced to suppress the temperature rise of the coil 39. Conversely, when the temperature of the coil 39 falls, the valve 41 is controlled in the closing direction.

  As described above, according to the present embodiment, the temperature detection means B40 detects the temperature of the motor 34, and the amount of air passing through the duct 38 is changed according to the detection result, whereby the upper limit value of the usable coil temperature. This makes it possible to perform efficient motor cooling with excellent temperature controllability.

  As described above, the washing / drying machine according to the present invention is not limited to the motor temperature without increasing the size of the motor of the blower unit even when the blower unit that requires a large air volume is used in an air passage using a heat pump device. Since the rise can be efficiently suppressed and the air passage configuration can be made compact, it is possible to maintain high drying efficiency with excellent reliability and durability, and thus it is useful for washing machines that perform drying and dehumidification.

1 is an external perspective view of a washing / drying machine according to Embodiment 1 of the present invention. Cross section of the washer / dryer Cross section of the washer / dryer (A) Front sectional view of the blower of the washer / dryer (b) Side sectional view of the blower of the washer / dryer System concept of the washer / dryer Sectional drawing of the air blower of the washing dryer in Embodiment 2 of this invention Sectional drawing of the air blower of the washing dryer in Embodiment 3 of this invention Sectional drawing of the air blower of the washing dryer in Embodiment 4 of this invention. Sectional drawing of the air blower of the washing dryer in Embodiment 5 of this invention. Time characteristic diagram of motor temperature and motor rotation speed of the blower Sectional drawing of the air blower of the washing dryer in Embodiment 6 of this invention Time characteristics chart of motor temperature and valve opening / closing of the blower Cross-sectional view of a conventional washing and drying machine

Explanation of symbols

1 Housing 3 Water Tank 4 Laundry Object (Clothing)
5 Rotating tank 12 Blower (Blower unit)
14 Air supply port 20 Air passage (wind passage)
21 Heat absorber (dehumidifying means)
22 Endothermic air passage (wind passage)
23 Heatsink (heating means)
24 Radiator air path (wind path)
26 Vertical compressor 31 Centrifugal fan (fan)
32 Scroll casing (air blowing means)
33 Tongue 34 Motor (Blower)
35 Discharge unit 36 Case 37 Temperature detection means A
38 Duct 39 Coil 40 Temperature detection means B

Claims (9)

A water tank elastically supported in the housing, a rotary tank that is rotatably provided in the water tank and accommodates clothes, a dehumidifying means for dehumidifying wet air, and a heating means for heating the air dehumidified by the dehumidifying means An air passage communicating the heating means, the rotating tub, and the dehumidifying means in order, and an air blowing means for circulating air in the air passage and having a motor, and the motor is connected to the atmospheric pressure in the air passage. A washer-dryer that is cooled by air guided from a higher part. A case surrounding the motor is provided, the case is disposed so as to be exposed to the outside air, a gap is provided between the case and the motor, and air guided from an air passage is passed through the gap to cool the motor. The washing / drying machine according to claim 1, wherein the washing / drying machine is provided. The washing / drying machine according to claim 1 or 2, wherein the air blowing means includes a centrifugal fan and a scroll casing, and a discharge portion for discharging air for cooling the motor is provided in the vicinity of the downstream portion of the tongue portion of the scroll casing. A temperature detecting means A for detecting the temperature of the air blown out from the rotating tank is provided, and the air blowing means is controlled according to the temperature detected by the temperature detecting means A, and the temperature detecting means A is arranged downstream of the air blowing means. The washing / drying machine according to any one of claims 1 to 3, wherein the washing / drying machine is attached to an opening provided in the machine. The washing / drying machine according to any one of claims 2 to 4, wherein a duct that communicates between the air passage and the inside of the case is provided, and air that cools the motor is guided by the duct. The washing / drying machine according to any one of claims 1, 3, and 4, wherein a duct that communicates the air passage and the inside of the motor is provided, and air that cools the motor is guided by the duct. The washing / drying machine according to any one of claims 1 to 6, wherein temperature detection means B for detecting a temperature of the motor is provided, and rotation of the motor is controlled in accordance with an output of the temperature detection means B. The temperature detecting means B for detecting the temperature of the motor and a valve for changing the air volume of the air passing through the duct are provided, and the valve is controlled according to the output of the temperature detecting means B. Laundry dryer. The laundry dryer according to any one of claims 1 to 8, wherein the dehumidifying means and the heating means are configured by a heat pump cycle using a compressor.

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