JP4791881B2 - Clothes dryer - Google Patents

Description

  The present invention relates to a clothes dryer for drying clothes by circulating hot air generated using a heat pump mechanism as a heat source.

  BACKGROUND ART A clothes dryer having a heat pump mechanism circulates air in a drying chamber containing clothes through an air circulation path in which an evaporator and a condenser of the heat pump mechanism are arranged. At this time, air is cooled and dehumidified by an evaporator, and air is heated by a condenser, and is warmed and sent to a drying chamber. Moreover, the warm air sent into the drying chamber takes moisture away from the clothes and then returns to the air circulation path. The clothes dryer repeats such operations to dry clothes.

  In recent years, in such clothes dryers, it has been considered to use the heat pump mechanism to air-condition, in particular, cool a space such as a washroom in which the clothes dryer is installed. For example, the air circulation path is shut off at a portion between the evaporator and the condenser, and air outside the main body (outside air) is sucked into the air circulation path from an appropriate gap in the main body and the outside air is evaporated by a blower fan. A configuration has been considered in which cooling is performed through a vessel, and the cooled outside air is blown from the front of the main body to the outside of the main body to perform air conditioning (for example, see Patent Document 1).

However, it is considered that the outside air sucked into the main body contains foreign matters such as dust and dust. The clothes dryer having the above-described configuration is configured to cool by performing heat exchange by bringing the sucked outside air into direct contact with the fins of the evaporator in the air circulation path during the cooling operation.
Therefore, during the cooling operation, foreign substances contained in the outside air may adhere to the fins of the evaporator, and the foreign substances may gradually accumulate. Thereby, the contact area of the fin surface of an evaporator and air will reduce and heat exchange performance will fall. In addition, the presence of the foreign matter increases the flow path resistance, causing a problem that leads to performance degradation such as a decrease in air volume and an increase in noise.
As a conventional technique for solving such a problem, generally, a configuration in which a filter or the like is provided in a portion for sucking outside air to capture foreign matters can be considered (for example, see Patent Document 2).
Japanese Patent No. 3330789 Japanese Patent No. 3625820

  However, the above prior art is based on the premise that a dedicated ventilation path is formed from the intake port through which outside air is taken in until it is discharged from the main body, and a filter for capturing foreign matter from the outside air is provided at the intake port. It is easy. On the other hand, the clothes dryer having the above-described configuration is configured such that outside air is taken into the main body through an appropriate gap in the main body during the air conditioning operation. Even if it is going to apply the said prior art to the thing of such a structure, it is difficult to provide a filter in all these gaps, and it cannot be said that it is a realistic solution.

  In order to solve the above problems, the present invention performs air conditioning by blowing outside air sucked into the main body out of the main body using a heat pump mechanism, and the heat exchange performance due to the influence of foreign matters contained in the external air. An object of the present invention is to provide a clothes dryer capable of suppressing an increase in flow path resistance without reducing the flow rate.

In order to achieve the above object, a clothes dryer according to the present invention includes a drying chamber provided in a main body for housing clothes, a circulation duct communicating with an air inlet / outlet of the drying chamber, and the drying dryer through the circulation duct. A circulating fan for circulating indoor air, an evaporator and a condenser interposed in the path of the circulation duct, and a heat pump mechanism including a compressor and a capillary tube, and hot air generated by the heat pump mechanism Is supplied to the drying chamber via the circulation duct to perform a drying operation, and an air passage branched from the circulation duct and provided between the drying chamber and the evaporator to be connected to the outside of the main body. A damper for selectively opening and closing the passage of the air duct and the circulation duct, an air intake port provided on the counter duct side of the evaporator of the circulation duct, and a front A blower fan that takes in air in the main body from the air intake and blows air out of the main body from the blower passage through the evaporator; an air filter disposed in communication with an external air inlet provided in the main body; An outside air introduction fan and a cooling device for cooling the condenser, and the outside air taken into the main body from the outside air introduction port through the air filter in a state where the damper opens the air passage, The main feature is that an air conditioning operation in which the air is discharged out of the main body from the air intake through the evaporator and the air passage, and the condenser is cooled by the cooling device during the air conditioning operation .

  According to the above means, during the air conditioning operation, the air outside the main body (outside air) is introduced into the main body and taken into the circulation duct after the foreign matter is removed by the air filter. For this reason, foreign substances do not adhere to the evaporator and accumulate. Therefore, it is possible to provide a clothes dryer that can suppress an increase in flow path resistance without deteriorating heat exchange performance.

(First embodiment)
Hereinafter, a first embodiment in which the present invention is applied to a drum-type washing / drying machine having a washing function will be described with reference to FIGS. 1 and 2.
1 and 2 are longitudinal side views showing the overall configuration of the drum type washing and drying machine, in which FIG. 1 shows a state during a cooling operation as an air conditioning operation, and FIG. 2 shows a state during a drying operation. On the front plate 1a of the main body 1 forming the outline of the washing / drying machine, a loading port 2 for taking in and out the laundry is formed, and a door 3 for opening and closing the loading port 2 is disposed. Further, support legs 4 for installing a floor surface are provided at corners of the bottom plate of the main body 1.

  A substantially non-porous water tank 5 is provided inside the main body 1, and in this water tank 5, a drum 6 having a large number of through holes 6 a in a peripheral wall and rotatable around a horizontal axis is concentric. It is arranged in a shape. Each of the water tank 5 and the drum 6 has a bottomed cylindrical shape whose front side (left side in FIG. 1) is open. The water tank 5 is elastically supported in the main body 1 by a plurality of suspensions 7 (only one is shown), so that the water tank 5 and the drum 6 have their openings 8 and 9 facing the charging port 2. In addition, it is supported in a slightly upwardly inclined state. Further, an elastically expandable / contractible bellows 10 is connected between the inlet 2 and the opening 8 of the water tank 5 in a watertight manner, and is in close contact with the back surface of the door 3 from the water tank 5 side to the inside and outside of the main body 1. Prevents water leakage.

  In addition, a plurality of baffles 6 b for scooping up laundry are provided on the inner surface of the drum portion of the drum 6. The drum 6 is used for dehydration and drying as well as being easy to wash by being driven to rotate. The through-hole 6a provided in the drum 6 functions as a hole for water passage during washing, rinsing and dehydration, and functions as a hole for ventilation during drying. Further, the drum 6 is provided with, for example, a liquid-sealed rotary balancer 11 around the opening 9.

  On the other hand, a motor 12 is disposed in the center of the back surface of the water tank 5. The motor 12 is, for example, an outer rotor type brushless DC motor. A rotating shaft 13 connected to the rotor is inserted into the water tank 5, and the drum 6 is directly connected to the tip of the motor 12. Accordingly, when the motor 12 is energized, the drum 6 is directly rotated in conjunction with the rotor of the motor 12.

  Further, a drain outlet 5a is formed in the lowermost rear part of the bottom of the water tank 5, and one end side of a drain pipe 15 through a drain valve 14 is connected to the drain outlet 5a in midstream. The other end side of the drain pipe 15 is led out from the main body 1 (not shown), so that the water in the water tank 5 can be drained to a predetermined drainage place outside the main body 1.

  A plurality of hot air inlets 16 are formed on the rear end surface of the drum 6 so as to be in an annular arrangement concentric with the center of the drum 6. On the other hand, the hot water inlet 5b is formed in the upper part of the rear end surface part in the water tank 5 so as to oppose the rotation trajectory of the hot air introduction port 16, and the hot air outlet is formed in the upper part of the front end surface part. 5c is formed.

  A base plate 17 is disposed on the bottom plate of the main body 1 below the water tank 5, and a heat exchange duct 18 is disposed on the base plate 17. A suction port 19 is provided in the upper part of the front end of the heat exchange duct 18, and the suction port 19 is connected to the hot air outlet 5 c of the water tank 5 through an expansion joint 20 and an exhaust duct 21. On the other hand, a casing 23 of the circulation fan device 22 is connected to the rear end of the heat exchange duct 18, and an outlet 24 of the casing 23 is connected to the water tank 5 via an expansion joint 25 and an air supply duct 26. Connected to the hot air inlet 5b. In this way, the circulation duct 27 is configured such that the rear hot air inlet 5b and the front hot air outlet 5c are detoured below the water tank 5 and communicated with each other.

  In this case, the circulation fan device 22 is in the form of a centrifugal fan, and has a circulation fan 28 inside the casing 23. A motor 29 that rotates the circulation fan 28 is provided outside the casing 23. At the time of the drying operation shown in FIG. 2, the circulating fan device 22 is driven to generate circulating air that flows in the direction indicated by the arrow A in the circulation duct 27.

  In the circulation duct 27, inside the heat exchange duct 18, an evaporator 30 is disposed at the front, and a condenser 31 is disposed at the rear. A heat pump mechanism is constituted by the evaporator 30 and the condenser 31, the compressor 32 arranged in parallel outside the heat exchange duct 18, and a capillary tube (throttle) (not shown). As is well known, the heat pump mechanism includes a refrigeration cycle in which the refrigerant sealed in the heat pump mechanism circulates in the order of the condenser 31, the capillary tube (throttle), and the evaporator 30 when the compressor 32 operates. Yes.

  Although neither the evaporator 30 nor the condenser 31 interposed in the heat exchange duct 18 is shown in detail, a structure in which a large number of heat transfer fins and refrigerant circulation tubes are arranged in an intersecting manner. It is. The circulating air flowing in the circulation duct 27 passes between the heat transfer fins, and this circulating air is heated or cooled by heat exchange. In other words, the heat pump mechanism functions as a heating source that heats the circulating air or a cooling source that cools the circulating air (see the description of the operation described later).

  A dehumidified water discharge port 33 for discharging dehumidified water out of the main body 1 is formed on the lower surface side of the heat exchange duct 18 where the evaporator 30 is disposed. The dehumidified water discharge port 33 is connected to one end side of a dehumidified water discharge pipe 34 through an on-off valve (not shown). The other end side of the dehumidified water discharge pipe 34 joins the drain pipe 15 of the water tank 5 (not shown) and is led out of the main body. The on-off valve is controlled to be closed during washing, rinsing, and dehydrating operations and to be opened during drying operations so that water does not flow back into the heat exchange duct 18 disposed below.

An air blowing port 35 is formed at the front end portion of the heat exchange duct 18 so as to branch from the suction port 19. The heat exchange duct 18 communicates with the air passage 36 formed in the front lower portion of the main body 1 ahead of the heat exchange duct 18 through the air outlet 35. An upper portion of the air passage 36 is opened upward from the outside of the main body 1 and communicates with the outside of the main body 1.
A blower 37 for air conditioning is arranged in the blower passage 36. In this case, the blower device 37 is a cross-flow fan type, and a blower fan 38 in which a large number of long blade pieces are arranged in a cylindrical shape is disposed inside the blower passage 36, and the motor that rotates the blower fan 38. (Not shown) are arranged outside the air passage 36.

  Further, the air blowing port 35 communicates with the suction port 19 between the drum 6 and the evaporator 30 in the circulation duct 27, and a damper 39 is provided at the communicating portion. The upper end of the damper 39 is supported by a support shaft 40 so as to be able to rotate back and forth, and is rotated by the power of a drive source such as a motor or an electromagnet (both not shown), so that the suction port 19 of the heat exchange duct 18 It functions as a wind path switching device that switches between closing and opening the passage and simultaneously switching between opening and closing the air blowing port 35.

  On the other hand, in the upper wall of the intermediate portion of the heat exchange duct 18 between the evaporator 30 and the condenser 31 in the circulation duct 27, air outside the circulation duct 27 in the main body 1 is sucked into the heat exchange duct 18. The air intake 41 is formed. Although not shown, a cooling device is provided immediately above the condenser 31. This cooling device cools the condenser 31 by, for example, sprinkling water in a shower shape. On the lower surface side of the heat exchange duct 18 where the condenser 31 is disposed, a discharge port connected to the drain pipe 15 is provided (not shown), and water used for cooling is discharged from this discharge port. It is discharged out of the main body through the drain pipe 15.

  In the front lower part in the main body 1, an outside air inlet 42 opened downward in FIG. 1 is provided below the air passage 36. Above the outside air introduction port 42, an outside air introduction fan 43 capable of outputting the same amount of air as the blower fan 38 is provided so as to face the outside air introduction port 42. The outside air introduction port 42 and the outside air introduction fan 43 are A linear duct 44 is integrally formed.

  An air filter 45 is disposed in the duct 44 so as to face the outside air inlet 42 so as to block the air flow in the duct 44. The air filter 45 is configured by attaching a mesh-like filter body 45a to a frame 45b having a handle. When the air filter 45 is inserted into the duct 44, the handle portion of the frame 45 b slightly protrudes from the front plate 1 a of the main body 1. With such a configuration, the air filter 45 can be attached and detached from the front of the main body 1.

  The outside air introduction port 42 communicates with the inside of the main body 1 through the duct 44, and the outside air introduction fan 43 is operated so that air outside the main body 1 enters the main body 1 through the air filter 45. It has been introduced.

  In the upper part of the main body 1, a power supply system control unit 46 and a display system control unit 47 necessary for controlling the washing and drying machine, a water supply valve 48 for supplying water into the water tank 5, a water supply case 49, and a water supply hose 50 is arranged.

Next, the operation of the drum type washing / drying machine having the above configuration will be described.
A case where washing is performed by the washing / drying machine having the above-described configuration will be described. When a standard driving course is started, a washing (washing and rinsing) operation is started first. In this washing operation, an operation of supplying water into the water tub 5 is performed by the water supply valve 48, and then the motor 12 is driven to rotate the drum 6 alternately in both forward and reverse directions at a low speed.
When the washing operation is completed, the dehydration operation is subsequently started. In this dehydration operation, after the water in the water tank 5 is discharged, an operation of rotating the drum 6 in one direction at a high speed is performed. Thereby, the laundry in the drum 6 is centrifugally dehydrated.

  When the dehydrating operation is completed, the drying operation is subsequently performed. In this case, as shown in FIG. 2, the damper 39 is set at a position where the suction port 19 of the heat exchange duct 18 is opened and the air blowing port 35 is closed. In this state, the motor 29 of the circulation fan device 22 is driven while rotating the drum 6 in both forward and reverse directions at a low speed. Then, the air in the water tank 5 flows into the heat exchange duct 18 through the exhaust duct 21 and the expansion joint 20 of the circulation duct 27 from the hot air outlet 5c by the blowing action of the centrifugal circulation fan 28.

  At the same time, the operation of the compressor 32 of the heat pump mechanism is started. As a result, the refrigerant sealed in the tube of the heat pump mechanism is compressed to become a high-temperature and high-pressure refrigerant, and the high-temperature and high-pressure refrigerant flows into the condenser 31 and exchanges heat with the air in the heat exchange duct 18. As a result, the air in the heat exchange duct 18 is heated, and conversely, the temperature of the refrigerant is lowered and liquefied. The liquefied refrigerant passes through the capillary tube and is depressurized, and then flows into the evaporator 30 and is vaporized. At this time, the refrigerant in the evaporator 30 takes heat of vaporization, whereby the air in the heat exchange duct 18 is cooled. Then, the refrigerant that has passed through the evaporator 30 returns to the compressor 32.

  By such an action of the heat pump mechanism, the air flowing into the heat exchange duct 18 from the water tank 5 is cooled by the evaporator 30 and dehumidified, and then heated by the condenser 31 and warmed. The hot air is supplied from the hot air inlet 5 b into the water tank 5 through the expansion joint 25 and the air supply duct 26, and is further supplied from the hot air inlet 16 into the drum 6. The hot air supplied into the drum 6 deprives the laundry of moisture, and then flows into the heat exchange duct 18 from the hot air outlet 5 c through the exhaust duct 21 and the expansion joint 20.

That is, as indicated by a solid line arrow A in FIG. 2, air circulates between the heat exchange duct 18 in which the evaporator 30 and the condenser 31 are interposed between the drum 6 and the laundry in the drum 6 is dried. Is done. Therefore, in this case, the inside of the drum 6 functions as a drying chamber. Further, during the drying operation, in the evaporator 30, dew condensation occurs on the surface as the air passing through the heat exchange duct 18 is cooled and dehumidified. The dehumidified water generated by this condensation flows downward from the evaporator 30 and is discharged from the dehumidified water discharge port 33 through the dehumidified water discharge pipe 34 and the drain pipe 15 to the outside of the main body 1.
Even during the drying operation, the air intake 41 provided in the heat exchange duct 18 remains open, but the air passage in the circulation duct 27 is entirely closed, so that an opening portion is provided at one place. Even if there is, there is no big influence on the air flow.

  Next, a description will be given of a case where a cooling operation (corresponding to an air conditioning operation) for cooling a space where a washing / drying machine is installed is executed. In this case, as shown in FIG. 1, the damper 39 is switched to a position that opens the air blowing port 35 of the heat exchange duct 18 and closes the passage of the suction port 19.

  In this state, when the operation of the compressor 32 of the heat pump mechanism is started and the blower fan 38 and the outside air introduction fan 43 are driven, the air outside the main body 1 is brought into the outside air introduction port by the blowing action of the outside air introduction fan 43. 42 is sucked into the inside of the main body 1 (outside the circulation duct 27) through the air filter 45. At this time, dust or dust contained in the air outside the main body 1 is captured by the air filter 45 and therefore does not enter the inside of the main body 1.

  The air sucked into the main body 1 is sucked into the heat exchange duct 18 from the air intake 41 by the blowing action of the blower fan 38. The air drawn into the heat exchange duct 18 passes through the evaporator 30 and is cooled in a direction opposite to the air flow during the drying operation described above, as indicated by the broken arrow B in FIG. The cooled air is discharged from the air outlet 35 through the air passage 36 toward the front outside the main body 1, and the space where the washing / drying machine is installed is cooled.

  During the cooling operation described above, water is sprayed from the cooling device toward the condenser 31 to cool the condenser 31 where heat exchange does not function effectively. That is, in order to stably operate the heat pump mechanism, the condenser 31 dissipates heat equal to the heat absorbed by the refrigerant in the evaporator 30.

According to the said Example, there exist the following effects.
Since the air filter 45 is disposed in the duct 44 connecting the outside air introduction port 42 and the outside air introduction fan 43 so as to block the flow of air in the duct 44, the air outside the main body 1 is used when performing the cooling operation. Is sucked into the main body 1 after passing through the air filter 45. That is, even if foreign matter such as dust or dust is included in the air outside the main body 1, the foreign matter is removed by the air filter 45, so that the foreign matter inside the main body 1 and thus inside the circulation duct 27. Can be prevented.

  Thereby, when the air supplied from the outside of the main body 1 is cooled through the evaporator 30 of the heat pump mechanism, foreign matter does not adhere to and accumulate on the heat transfer fins of the evaporator 30, and the heat transfer fins Efficient heat exchange can be performed without reducing the contact area between the surface and air. Further, since the flow path resistance is not increased by the foreign matter, the air flow in the main body 1 and the circulation duct 27 becomes smooth. Accordingly, it is possible to discharge cold air with a sufficient air volume and to suppress noise generated when taking outside air into the main body 1.

  By the way, there are many gaps (not shown) in the main body 1 of the washing and drying machine. When air outside the main body 1 is sucked into the main body 1 from these gaps during the cooling operation, this air is not passed through the air filter 45 and is supplied into the main body 1 while containing foreign matter. Will end up. Therefore, the washing / drying machine of the present embodiment is configured to actively take in air outside the main body 1 from the outside air introduction port 42 by the blowing action of the outside air introduction fan 43, so that most of the air taken into the main body 1 is taken in. It will pass through the air filter 45 and foreign matter can be removed.

  Further, since the outside air introduction fan 43 can output the same amount of air as that of the blower fan 38, the amount of air outside the main body 1 sucked into the main body 1 by the blowing action of the outside air introduction fan 43, and the blower fan 38. It is possible to substantially match the amount of air discharged to the outside of the main body 1 by the air blowing action. Therefore, the air outside the main body 1 sucked from the large number of gaps described above becomes extremely small, and most of the air outside the main body 1 supplied into the main body 1 passes through the air filter 45 and the foreign matter is removed. The effects as described above can be obtained with certainty.

  In addition, the outside air introduction port 42 is formed to open downward, and the outside air introduction port 42 and the outside air introduction fan 43 are positioned to face each other, and a duct 44 that connects them is formed in a linear shape without a bent portion. It was. Thereby, since the air outside the main body 1 sucked from the outside air introduction port 42 flows straight and smoothly to the outside air introduction fan 43, the flow path resistance is further reduced. Therefore, even when the outside air introduction fan 43 having a relatively small output capacity is used, a sufficient air volume can be secured. In addition, sound leakage generated in the main body 1 due to the operation of the circulation fan 28 during the drying operation and the operation of the blower fan 38 and the outside air introduction fan 43 during the cooling operation is directed downward, and the front of the main body 1 is Since it becomes difficult to radiate, noise can be reduced.

  The air filter 45 is detachably inserted from the front of the main body 1 so that the handle portion of the frame 45b slightly protrudes from the front plate 1a of the main body 1 in the inserted state. Accordingly, the user can easily hold the handle portion of the frame 45b from the front of the washing / drying machine and put in and out the air filter 45, so that the maintainability is improved.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG.
1 and 2 are denoted by the same reference numerals, description thereof is omitted, and only different portions will be described below. FIG. 3 is a view corresponding to FIG. 1 in the first embodiment, and shows a state during the cooling operation.
In the front lower part in the main body 1, the outside air introduction fan 43 is provided at substantially the same height as the air intake 41, and is arranged in the lateral direction so that the discharge direction is directed to the air intake 41. Yes. The duct 51 extends from an outside air introduction port 42 formed on the lower surface side of the main body 1 to a position where the outside air introduction fan 43 is disposed, and integrally forms these.

  As a result, during the cooling operation, the air outside the main body 1 sucked through the air filter 45 from the outside air introduction port 42 by the air blowing action of the outside air introduction fan 43 becomes air as shown by the solid line arrow C in FIG. The air is blown toward the intake port 41. That is, the air sucked from the outside of the main body 1 is difficult to stay in the main body 1 during the cooling operation. In addition, since the air staying in the main body 1 is heated by the heat generated by the compressor 32 or the like, it is often relatively high in temperature compared to the air outside the main body 1.

  Therefore, the washing and drying machine of the present embodiment actively blows the air taken in outside the main body 1 toward the air intake 41 during the cooling operation. As a result, the ratio of the air staying in the main body 1 having a relatively high temperature being taken into the heat exchange duct 18 from the air intake 41 is reduced, and more air outside the main body 1 having a relatively low temperature is taken in. It is. Therefore, in the cooling operation, the evaporator 30 is used effectively as in the first embodiment. However, the evaporator 30 generates cold air of the same temperature in order to cool the relatively low temperature air. Therefore, it is possible to reduce the capacity of the heat pump mechanism that is necessary for this, and to improve the cooling performance.

In addition, this invention is not limited to each Example described above and described in drawing, The following deformation | transformation or expansion | deployment is possible.
The outside air inlet 42 may have a shape that opens forward instead of opening downward.
The outside air introduction fan 43 may have a larger output capacity than the blower 37. If it does so, the internal pressure of the main body 1 will increase at the time of air_conditionaing | cooling operation, outside air will hardly be taken in from a clearance gap, and the effect by the air filter 45 can be acquired still more reliably.
The air filter 45 may be cleaned from the front of the main body 1 even if it is not detachable.

The washing / drying machine may have a vertical axis in which a water tank and a rotating tank (corresponding to the drum 6) are arranged in a vertical axis.
In addition, the specific configuration of the circulation duct 27 and the flow direction of the circulating air can be implemented by appropriately changing them in practice without departing from the gist of the present invention.

1 is a longitudinal side view of a drum type washing / drying machine according to a first embodiment of the present invention during cooling operation. Longitudinal side view during drying operation FIG. 1 equivalent view showing a second embodiment of the present invention.

Explanation of symbols

  In the drawings, 6 is a drum (drying chamber), 22 is a circulation fan device, 27 is a circulation duct, 28 is a circulation fan, 30 is an evaporator, 31 is a condenser, 32 is a compressor, 36 is an air passage, and 37 is air. The apparatus, 38 is a blower fan, 39 is a damper, 41 is an air intake, 42 is an outside air introduction port, 43 is an outside air introduction fan, and 45 is an air filter.

Claims (4)

A drying chamber provided in the body for housing clothes, a circulation duct communicating with an air inlet / outlet of the drying chamber, a circulation fan for circulating air in the drying chamber through the circulation duct, and a path of the circulation duct And a heat pump mechanism comprising a compressor and a capillary tube, and a warm air generated by the heat pump mechanism is supplied to the drying chamber through the circulation duct to perform a drying operation. In what
A ventilation path branched from the circulation duct and provided so as to communicate with the outside of the main body from between the drying chamber and the evaporator;
A damper for selectively opening and closing the air passage and the passage of the circulation duct;
An air intake port provided on the circulation duct on the side opposite to the air flow path of the evaporator;
A blower fan that takes in air in the main body from the air intake and blows air out of the main body from the air passage through the evaporator;
An air filter and an outside air introduction fan disposed in communication with an outside air inlet provided in the main body ,
A cooling device for cooling the condenser ,
With the damper opened, the outside air taken from the outside air inlet through the air filter into the body is discharged from the air inlet to the outside of the body through the evaporator and the air passage. Enables air-conditioning operation ,
The clothes dryer is characterized in that the condenser is cooled by the cooling device during the air conditioning operation .   The clothes dryer according to claim 1, wherein the air filter is disposed on the front side of the main body.   The clothes dryer according to claim 1 or 2, wherein the outside air inlet is formed to open substantially downward.   The clothes dryer according to any one of claims 1 to 3, wherein the outside air introduction fan blows outside air introduced from the outside air introduction port in a direction toward the air intake.

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