JP2007301221A - Clothes dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a space for disposing fan devices and to reduce the cost of manufacturing a clothes dryer by reducing the number of fan devices to be disposed. <P>SOLUTION: The clothes dryer comprises a first heat exchanger 34 for cooling and dehumidifying air discharged from a drying chamber 3 in the drying operation; a second heat exchanger 35 for heating the cooled and dehumidified air; a ventilation path 31 in which the first and second heat exchangers 34 and 35 are disposed for circulating and blowing the heated air to the drying chamber 3; and the fan devices 26 for circulating and blowing air. The clothes dryer is structured to execute such air-conditioning operation that air taken from an air intake 46 of the ventilation path 31 is heated by the first heat exchanger 34 and that the heated air is made to pass through the drying chamber 3 by the fan devices 26 to be blown out to the outside from an outlet 40 for air conditioning. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a clothes dryer having a heat pump for drying clothes.

  2. Description of the Related Art Conventionally, clothes dryers having a heat pump (refrigeration cycle) for drying clothes have been attracting attention as having good drying performance and energy saving. In a clothes dryer provided with this heat pump, air in a drum (drying chamber) containing clothes is circulated through a ventilation path provided with an evaporator and a condenser of the heat pump. In the case of this configuration, the air is cooled and dehumidified by the evaporator, the air is heated by the condenser, the air is sequentially fed to the drum, and the air deprived of moisture is passed through the air passage, thereby repeating the clothing. I try to dry it.

Further, a configuration is considered in which an air conditioning function is added to the clothes dryer provided with the heat pump so that the interior of the clothes dryer is cooled and heated by the clothes dryer (for example, Patent Document 1). reference).
JP-A-9-56992

  However, the conventional clothes dryer has a fan apparatus for drying clothes and a fan apparatus for air conditioning operation separately from the fan apparatus for drying operation. However, there is a problem that the installation space is increased and the manufacturing cost is increased.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a clothes dryer that can reduce the number of fan devices arranged to reduce the space for arranging the fan devices and reduce the manufacturing cost.

  The clothes dryer of the present invention includes a first heat exchanger that cools and dehumidifies air discharged from a drying chamber during a drying operation, a second heat exchanger that heats the cooled and dehumidified air, and the first heat exchanger. And a clothes dryer provided with a ventilation path that circulates and blows the heated air in which the second heat exchanger is disposed to the drying chamber, and a fan device for circulation and ventilation that is disposed in the ventilation path The air outside the ventilation path taken in from the air intake provided in the ventilation path is heated by the first heat exchanger, and the heated air is passed through the drying chamber by the fan device. It is characterized in that it is configured to be able to execute an air-conditioning operation that is sent out from the air-conditioning outlet.

  According to the above means, the fan device for circulating and blowing the heated air into the drying chamber during the drying operation of the clothes is passed through the drying chamber through the drying chamber during the air conditioning operation. Since it is configured to be used as a fan device that sends out to the outside of the apparatus, the number of fan devices can be reduced as compared with the conventional configuration.

  A first embodiment in which the present invention is applied to a drum-type washing / drying machine will be described below with reference to FIGS. First, FIG. 1 is a longitudinal side view showing a schematic overall configuration of the washing and drying machine of the present embodiment. As shown in FIG. 1, a water tank 2 is disposed inside an outer box 1 of a washing and drying machine, and a rotating tank (drum) 3 can rotate around the horizontal axis in the water tank 2. It is arranged.

  The water tank 2 and the rotating tank 3 are both cylindrical, and are provided with openings 4 and 5 at the front end face (left side in FIG. 1), respectively. Among these, the opening 5 of the rotating tub 3 is for putting in and out the laundry (clothing), and the opening 4 of the water tub 2 surrounds it. The opening 4 of the water tub 2 is connected to an opening 6 for taking in and out the laundry formed on the front surface of the outer box 1 through a bellows 7. A door 8 is provided at the opening 6 of the outer box 21 so as to be openable and closable.

  For example, a liquid-sealed rotary balancer 9 is provided around the opening 5 of the rotary tank 3. A hole 10 is formed in the almost entire region of the circumferential side portion (body portion) of the rotating tub 3 (only a part is shown). The hole 10 functions as a water passage hole during washing and dehydration, and functions as a ventilation hole during drying. In addition, a plurality of baffles 11 project from the inner surface of the peripheral side portion of the rotating tub 3, and a plurality of baffles 11 are arranged on the rear end surface portion of the rotating tub 3 in an annular arrangement concentric with the center thereof. A hot air inlet 12 is formed.

  Further, a hot air outlet 13 is formed at the upper part of the front end face part of the water tank 2 (the part above the opening part 4). A hot air inlet 14 is formed in the upper part of the rear end surface portion of the water tank 2 so as to face the rotation locus of the hot air inlet 12. In addition, a drain port 15 is formed at the bottom of the bottom of the water tank 2, and a drain valve 16 is connected to the drain port 15 outside the water tank 2. Further, a drainage hose 17 is connected to the drainage valve 16, so that the water in the water tank 2 is discharged outside the machine.

  A motor 18 is attached to the back surface of the water tank 2, and a rotation shaft 19 of the motor 18 is inserted into the water tank 2, and a rear side of the rotation tank 3 is disposed at the tip of the rotation shaft 19. The center of the end face is attached. Thereby, the rotation tank 3 is supported by the water tank 2 so that it can rotate coaxially. The aquarium 2 is elastically supported by the outer case 1 by a plurality of suspensions 20 (only one is shown), and the support form is a horizontal axis with the axial direction of the aquarium 2 being front and rear, and is also lifted forward It is an inclined shape. Therefore, the rotating tank 3 supported by the water tank 2 as described above has the same configuration.

The motor 18 is an outer rotor type, and is a thin brushless DC motor, and functions as a driving device that rotates the rotating tub 3.
A base plate 21 is disposed below the water tank 2 (on the bottom surface of the outer box 1), and a ventilation duct 22 is disposed on the base plate 21. An air inlet 23 is formed in the upper part of the front end of the ventilation duct 22, and the hot air outlet 13 of the water tank 2 is connected to the air inlet 23 via a return air duct 24 and a connection hose 25. Yes. The return air duct 24 is piped so as to bypass the left side of the opening 4 of the water tank 2.

  On the other hand, a casing 27 of a blower 26 that is a fan device for circulating air is continuously disposed at the rear end of the ventilation duct 22. The outlet portion 28 of the casing 27 is connected to the hot air inlet 14 of the water tank 2 through a connection hose 29 and an air supply duct 30. The air supply duct 30 is piped so as to bypass the left side of the motor 18.

  In the case of the above configuration, the hot air outlet 13 and the hot air inlet 14 of the water tank 2 are connected by the return air duct 24, the connection hose 25, the ventilation duct 22, the casing 27 of the blower 26, the connection hose 29, and the air supply duct 30. Thus, the ventilation path 31 is configured.

  The blower 26 is constituted by, for example, a centrifugal fan, and has a centrifugal impeller 32 provided inside the casing 27 and a motor 33 provided outside the casing 27 and rotating the centrifugal impeller 32. is doing.

  Further, in the ventilation duct 22 in the ventilation path 31, for example, an evaporator 34 as a first heat exchanger is disposed at the front, and for example, a condenser 35 as a second heat exchanger is disposed at the rear. Has been placed. Although neither the evaporator 34 nor the condenser 35 is shown in detail in detail, the evaporator 34 and the condenser 35 are of a finned tube type in which a large number of heat transfer fins are arranged at a fine pitch on the refrigerant circulation pipe, and are excellent in heat exchange. Yes. The air flowing through the ventilation duct 22 passes between the heat transfer fins of the evaporator 34 and the condenser 35.

  As shown in FIG. 2, the evaporator 34 and the condenser 35 constitute a heat pump 38 together with a compressor 36 and a throttle valve (particularly an electronic throttle valve) 37. In this heat pump 38, the compressor 36, the condenser 35, the throttle valve 37, and the evaporator 34 are cycle-connected in this order by a connection pipe 39 (refrigeration cycle), and the refrigerant is supplied by operating the compressor 36. It is configured to circulate.

  Now, as shown in FIGS. 1 and 3, an air conditioning outlet 40 is formed on the front surface of the upper end portion of the return air duct 24 in the ventilation path 51 so as to protrude obliquely forward and upward. The air-conditioning outlet 40 is connected to an air-conditioning outlet 43 that opens at the top of the front surface of the outer box 1 of the washing and drying machine via a connection hose 41 and a communication path 42. The air conditioning outlet 43 is provided with a net-like member, louvers or the like through which outside air can circulate. The air conditioning outlet 40 faces the hot air outlet 13 formed in the opening 4 of the water tank 2, so that the air from the drum 3 flows into the hot air outlet 13 and the air conditioning outlet. The air flows smoothly through the outlet 40 and is further blown out from the air conditioning outlet 43 through the connection hose 41 and the communication path 42.

  A damper (shutter) 44 is provided at the air-conditioning outlet 40 so as to be pivotable back and forth by a support shaft 45. The damper 44 is configured to open and close the air conditioning outlet 40 by a driving device such as a motor or an electromagnet (not shown), and closes the air conditioning outlet 40 during the drying operation of the clothes. During operation, the air-conditioning outlet 40 is configured to be opened.

  On the other hand, an air intake 46 (see FIG. 3) is formed in the front wall of the lower part of the return duct 24 in the ventilation path 31. A damper (shutter) 47 is provided at the air intake 46 so as to be pivotable back and forth by a support shaft 48. The damper 47 is configured to be rotated by a driving device such as a motor or an electromagnet (not shown) so as to open and close the air intake 46, and closes the air intake 46 during the drying operation of clothes, and during the air conditioning operation. Is configured to open the air intake 46 and block the portion of the return air duct 24 (ventilation path 31) communicating with the rotary tub 3 side. In this case, the damper 47 also functions as an air path switching device that switches between closing and opening the ventilation path 31.

  In addition, an outside air intake port 49 for introducing air outside the washing / drying machine into the outside box 1 is provided at the upper part of the rear surface portion of the outside box 1. The outside air inlet 49 is provided with a mesh member through which outside air can flow.

  In the upper part of the outer box 1, a power supply system control unit 50, a display system control unit 51, a water supply valve 52 for supplying water into the water tank 2, a water supply case 53, and A water supply hose 54 and the like are provided.

  Next, the operation of the washing / drying machine having the above configuration will be described. In the washing / drying machine, when a standard operation course is started, a washing (washing and rinsing) operation is started first. In this washing operation, an operation of supplying water from the water supply valve 52 through the water supply case 53 and the water supply hose 54 into the water tank 2 is performed, and then the motor 18 is driven, whereby the rotating tank 3 is driven at low speed in both forward and reverse directions. Alternately rotated.

  When the washing operation is completed, the dehydration operation is then started. In this dehydration operation, after the water in the water tank 2 is discharged, the motor 18 performs an operation of rotating the rotating tank 3 in one direction at a high speed. Thereby, the laundry in the rotating tub 3 is centrifugally dehydrated.

  When the dehydration operation is completed, a drying operation is next performed. In this drying operation, as shown by the solid line in FIG. 1, the damper 44 is set so as to close the air-conditioning outlet 40 of the return air duct 24, and the damper 47 is shown by the solid line in FIG. The air intake 46 of the return air duct 24 is set to be closed. In this state, the motor 33 of the blower 26 is operated while rotating the rotating tub 3 in both forward and reverse directions at a low speed. Then, as shown by the solid arrow A in FIG. 1, the air in the water tank 2 flows from the hot air outlet 13 through the return air duct 24 and the connection hose 25 to the ventilation duct 22 by the air blowing action of the centrifugal impeller 32. Into the inside.

  At this time, the operation of the compressor 36 of the heat pump 38 is started. As a result, the refrigerant sealed in the heat pump 38 is compressed into a high-temperature and high-pressure refrigerant, and the high-temperature and high-pressure refrigerant flows into the condenser 35 and exchanges heat with the air in the ventilation duct 22. As a result, the air in the ventilation duct 42 is heated, and conversely, the temperature of the refrigerant is lowered and liquefied. The liquefied refrigerant then passes through the throttle valve 37 and is decompressed, and then flows into the evaporator 34 and vaporizes. Thereby, the evaporator 34 cools the air in the ventilation duct 22. The refrigerant that has passed through the evaporator 34 returns to the compressor 36.

  In the case of this configuration, the air that has flowed into the ventilation duct 22 from the water tank 2 is cooled by the evaporator 34 and dehumidified, and then heated by the condenser 35 and warmed. Then, the warm air is supplied from the hot air inlet 14 into the water tank 2 through the connection hose 29 and the air supply duct 30, and is further supplied from the hot air inlet 12 into the rotary tank 3. .

  The hot air supplied into the rotary tub 3 deprives the laundry of moisture, and then flows from the hot air outlet 13 into the ventilation duct 22 through the return air duct 24 and the connection hose 25. In this way, air circulates between the ventilation duct 22 having the evaporator 34 and the condenser 35 and the rotating tub 3, thereby drying the laundry in the rotating tub 3. Therefore, in this case, the inside of the rotary tank 3 functions as a drying chamber.

  In contrast, when heating (air conditioning) the room where the washing / drying machine is installed, the damper 44 is set so as to open the air conditioning outlet 40 of the return air duct 24 as shown in FIG. At the same time, the damper 47 is set so as to open the air intake 46 of the return air duct 24 and close the portion of the return air duct 24 that communicates with the water tank 2 (rotating tank 3). In this state, the operation of the compressor 36 of the heat pump 38 is started and the blower 26 is operated.

  As a result, as indicated by the broken line arrow B in FIG. 3, the air outside the ventilation duct 22 is sucked into the ventilation duct 22 from the air intake 46, cooled by the evaporator 34, and dehumidified, and then the condenser 35. Is heated to warm air (similar to the air flow during the drying operation described above). Then, this hot air is supplied into the water tank 2 from the hot air inlet 14 through the connection hose 29 and the air supply duct 30, and is further supplied into the rotating tank 3 from the hot air inlet 12.

  Subsequently, the hot air supplied into the rotary tank 3 passes through the rotary tank 3 and flows into the return air duct 24 from the hot air outlet 13, and passes through the air conditioning outlet 40, the connection hose 41, and the communication path 42. Then, it is configured to discharge from the air conditioning outlet 43 to the front outside the machine. Thereby, the room in which the washing / drying machine is installed is heated. It should be noted that air outside the machine is sucked into the outer box 1 (outside the ventilation duct 22) from the outside air inlet 49 of the outer box 1 in accordance with the warm air discharge operation.

  According to this embodiment having such a configuration, the air blower 26 for circulating and blowing the heated air into the rotary tub 3 (drying chamber) during the drying operation of the clothes is heated during the air conditioning operation. Is used as a blower that passes through the rotary tank 3 (drying chamber) and is sent out from the air-conditioning outlet to the outside of the machine. Therefore, the number of fans (fan devices) can be reduced compared to the conventional configuration. it can.

  Further, in the above embodiment, the damper 44 is provided at the air conditioning outlet 40 and the damper 47 is provided at the air intake 46 so as to realize a configuration in which the number of fans arranged is reduced. The configuration can be simplified and the manufacturing cost can be reduced.

  Moreover, in the said Example, since the air-conditioning exit part 43 was arrange | positioned in the upper part of the front part of the outer case 1 of a washing-drying machine, the warm air blown out from the air-conditioning exit part 43 at the time of an air-conditioning driving | operation is upper body from a user's waist part. Therefore, heating (air conditioning) is most effective when the user changes clothes for bathing. Incidentally, in the conventional configuration (Patent Document 1), since the air outlet for air conditioning operation is arranged at the lower part of the front surface of the clothes dryer main body, the hot air (or cold air) blown out from the air outlet is the body of the user. There was a problem that the air conditioning capacity was insufficient because it did not hit the upper body from the waist.

  In the first embodiment, during the heating operation, the evaporator 34 as the first heat exchanger continues to absorb heat. Therefore, if the operation is continued for a long period of time, the temperature continues to decrease and performance deterioration due to frost formation or refrigerant There is a possibility that a bad effect such as liquid back without evaporating will occur. As a countermeasure for avoiding this, it is preferable that a heater, for example, a heater is integrally provided in the evaporator 34 (first heat exchanger), and the evaporator 34 is constantly or timely heated by this heater. . If comprised in this way, while being able to prevent frost formation, a refrigerant | coolant can be evaporated completely with the evaporator 34, and the stable heating operation can be provided.

  FIG. 4 shows a second embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals. In the second embodiment, the damper 56 that opens and closes the air intake 46 is configured to open outward when opened. Further, the damper 57 that opens and closes the air-conditioning outlet 40 is configured to block a portion of the return air duct 24 that communicates with the connection hose 25 (ventilating duct 22) when the air-conditioning outlet 40 is opened. It becomes the structure to arrange | position. In this case, the damper 57 also functions as an air path switching device that switches between closing and opening the ventilation path 31.

  The configuration of the second embodiment other than that described above is the same as that of the first embodiment. Therefore, in the second embodiment, substantially the same operational effects as in the first embodiment can be obtained.

  In the second embodiment, the blower 26 is disposed on the downstream side of the condenser 35 in the ventilation duct 22. Instead, the front portion in the ventilation duct 22, that is, the evaporator is used instead. It is good also as a structure which arrange | positions in the upstream of 34 and blows so that the wind produced | generated by this air blower may be pushed toward the evaporator 34. FIG.

  FIG. 5 shows a third embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals. In the third embodiment, as shown in FIG. 5, a four-way valve 58 is disposed between the evaporator 34 as the first heat exchanger, the condenser 35 as the second heat exchanger, and the compressor 36. Set up. In the case of this configuration, by switching the four-way valve 58 to the solid line path, it is possible to switch to the operation mode 1 in which the first heat exchanger is the evaporator 34 and the second heat exchanger is the condenser 35. Then, by switching the four-way valve 58 to a broken line path, it is possible to switch to the operation mode 2 in which the first heat exchanger 34 is a condenser and the second heat exchanger 35 is an evaporator.

  And in the said structure, when it switches to the driving | running aspect 1, heating can be performed at the time of an air-conditioning driving | operation similarly to the 1st Example. On the other hand, when switching to the operation mode 2, the cooling can be executed during the air conditioning operation. The configuration of the third embodiment other than that described above is the same as that of the first embodiment. Accordingly, in the third embodiment, substantially the same operational effects as in the first embodiment can be obtained. Particularly, according to the third embodiment, since the four-way valve 58 is configured to switch the functions of the first heat exchanger 34 and the second heat exchanger 35, heating and cooling can be executed during the air conditioning operation. . The four-way valve 58 may be configured to be incorporated in the second embodiment.

  FIG. 6 shows a fourth embodiment of the present invention. The same components as those in the third embodiment are denoted by the same reference numerals. In the third embodiment, when performing the cooling function (the operation mode 2) using the first heat exchanger 34 as a condenser, it is difficult to use the condenser heat 34 for a long time because the condensed heat 34 cannot be radiated. In order to avoid this, in the fourth embodiment, the first heat exchanger 34 of the third embodiment is replaced with a heat exchanger (so-called hydrothermal exchange) 59 that uses both water and a refrigerant (FIG. 6A). And (b)), and the refrigerant was water-cooled.

  As shown in detail in FIGS. 6A and 6B, the heat exchanger 59 is formed, for example, by attaching a heat transfer fin 61 made of aluminum, for example, to a refrigerant circulation pipe 60 made of copper. The refrigerant distribution pipe 60 has a plurality of rows of meandering lines 60a that are serpentine up and down, and are connected to each other at the lower or upper ends of both sides by U-shaped portions 60b. On the other hand, a large number of heat transfer fins 61 are arranged side by side.

  In addition, a cooling device 62 is incorporated in the heat exchanger 59. The cooling device 62 is also composed of, for example, a copper water pipe 63 in detail, and the row 63 a meandering above and below the water pipe 63 is arranged before and after the row 60 a of the refrigerant circulation pipe 60 of the heat exchanger 59. It is located between each of two rows, and a plurality of U-shaped portions 63b are connected to each other at the upper end portion on the right side. Accordingly, there is one row 63a of the water flow pipe 63 of the cooling device 62 with respect to the two rows 60 of the refrigerant circulation pipe 60 of the heat exchanger 59, that is, a 2: 1 relationship.

  The heat transfer fins 61 are also attached to the water flow pipe 63 of the cooling device 62. With this structure, the heat exchanger 59 is connected to the water flow pipe 63 by flowing water through the water flow pipe 63. Heat is transferred to the heat transfer fins 61 as a medium by flowing water and cooled. Further, the refrigerant flow in the refrigerant distribution pipe 60 and the water flow in the water flow pipe 63 are configured to be opposite flows. The second heat exchanger 35 has substantially the same configuration as the heat exchanger 59 without the cooling device 62.

  Furthermore, the inlet part 63c of the water flow pipe 63 of the heat exchanger 59 having the above-described configuration is directly connected to the water supply valve 52 via a connection tube (not shown). The outlet 63d of the water flow pipe 63 is connected to a drainage path near the drainage valve 16 through a connection tube (not shown). In addition, a part of the drainage connection tube connected to the outlet 63d is configured to pass through a position higher than the washing water level in order to prevent backflow.

  The configuration of the fourth embodiment other than that described above is the same as the configuration of the third embodiment. Accordingly, in the fourth embodiment, substantially the same operational effects as in the third embodiment can be obtained. In particular, according to the fourth embodiment, the first heat exchanger 34 is constituted by the heat exchanger 59 that uses water and a refrigerant in combination, and the refrigerant is water-cooled. When performing the cooling function used as a condenser, the heat of condensation can be sufficiently dissipated, so that it can be used for a long time.

  FIG. 7 shows a fifth embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals. In the fifth embodiment, a heater for heating, such as a sheathed heater 64, is disposed in a portion of the return air duct 24 close to the connection hose 25. In the case of this configuration, the temperature of the air can be increased by heating the air sent into the rotary tub 3 with the sheathed heater 64.

  The configuration of the fifth embodiment other than that described above is the same as that of the first embodiment. Accordingly, in the fifth embodiment, substantially the same operational effects as in the first embodiment can be obtained. In particular, according to the fifth embodiment, since the air sent into the rotating tub 3 is heated by the sheathed heater 64, the temperature of the air sent into the rotating tub 3 can be increased. The heating effect during operation can be further enhanced. The sheathed heater 64 may be configured to be incorporated in each of the second to fourth embodiments.

  As mentioned above, although several Example of this invention was described, this invention is not limited to them, Especially as a whole washing-drying machine, it is not restricted to the above-mentioned horizontal axis shape, A water tank and a rotation tank are made into vertical axis | shaft shape. It may be a vertical axis shape. In addition, the present invention is not limited to a washing and drying machine originally having both washing and drying functions, and can be implemented with appropriate modifications within a range not departing from the gist, such as being applicable to a clothes drying machine having only a drying function.

1 is a longitudinal side view of the washing / drying machine according to the first embodiment of the present invention during drying operation. Heat pump configuration diagram Figure equivalent to Figure 1 during air-conditioning operation FIG. 3 equivalent view showing a second embodiment of the present invention. FIG. 2 equivalent view showing a third embodiment of the present invention. The 4th Example of this invention is shown, (a) is a perspective view of a heat exchanger, (b) is a top view of a heat exchanger. FIG. 1 equivalent view showing a fifth embodiment of the present invention.

Explanation of symbols

  In the drawings, 1 is an outer box, 2 is a water tank, 3 is a rotating tank, 8 is a door, 10 is a hole, 12 is a hot air inlet, 13 is a hot air outlet, 14 is a hot air inlet, 15 is a drain outlet, 18 Is a motor, 19 is a rotating shaft, 22 is a ventilation duct, 23 is an air inlet, 24 is a return air duct, 25 is a connection hose, 26 is a blower (fan device), 27 is a casing, 28 is an outlet, and 29 is a connection hose. , 30 is an air supply duct, 31 is an air passage, 32 is a centrifugal impeller, 33 is a motor, 34 is an evaporator (first heat exchanger), 35 is a condenser (second heat exchanger), and 36 is a compressor. 37 is a throttle valve, 38 is a heat pump, 39 is a connection pipe, 40 is an air-conditioning outlet, 41 is a connection hose, 42 is a communication passage, 43 is an air-conditioning outlet, 44 is a damper, 46 is an air intake, 47 is Damper, 49 is outside air inlet, 52 is a water supply valve, 53 is a water supply case, and 54 is a water supply ho , 55 fan, 56 denotes a damper, 57 damper, 58 four-way valve, 59 heat exchanger, 60 the distribution pipes, the heat transfer fins 61, 62 cooler, 63 a water flow pipe.

Claims (5)

A first heat exchanger that cools and dehumidifies air discharged from the drying chamber during a drying operation; a second heat exchanger that heats the cooled and dehumidified air; and the first heat exchanger and the second heat exchanger In a clothes dryer comprising a ventilation path that circulates and blows air that has been arranged and heated to the drying chamber, and a fan device for circulation and ventilation that is arranged in the ventilation path,
Air outside the ventilation path taken from an air intake provided in the ventilation path is heated by the first heat exchanger, and the heated air is passed through the drying chamber by the fan device for air conditioning. A clothes dryer characterized by being configured to be able to perform an air-conditioning operation to be sent out from the blower outlet. A damper that opens and closes the air intake, and closes a portion of the ventilation path that communicates with the drying chamber when the air intake is opened;
The clothes dryer according to claim 1, further comprising a damper that opens and closes the air-conditioning outlet.   A first path through which refrigerant flows so that the first heat exchanger serves as an evaporator and the second heat exchanger serves as a condenser; and the first heat exchanger serves as a condenser and the second heat. The clothes dryer according to claim 1 or 2, further comprising a four-way valve that switches between a second path through which the refrigerant flows so that the exchanger is an evaporator.   The clothes dryer according to any one of claims 1 to 3, wherein the first heat exchanger is constituted by a heat exchanger using water and a refrigerant in combination, and the refrigerant is water-cooled. .   The clothes dryer according to any one of claims 1 to 4, wherein a heating means is provided integrally with the first heat exchanger.

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