CN220813102U - Heat exchange circulation system of drying equipment and drying equipment - Google Patents

Abstract

The utility model relates to the technical field of drying equipment, in particular to a heat exchange circulating system of the drying equipment and the drying equipment, and aims to solve the technical problem that the waiting time of a user is too long because the temperature in a cylinder is reduced after clothes are dried by the existing drying equipment for a long time. Therefore, the heat exchange circulation system comprises the first compressor, the first condenser, the second compressor, the second condenser and the evaporator, wherein the first condenser and the evaporator are positioned in the air duct, the second condenser is positioned outside the air duct, the first compressor, the first condenser and the evaporator form a first heat exchange circulation, the second compressor, the second condenser and the evaporator form a second heat exchange circulation, the first heat exchange circulation is independently operated to enable the evaporator and the first condenser to dehumidify and heat air flow, the second heat exchange circulation is independently operated to enable the evaporator to continuously refrigerate after the first heat exchange circulation is stopped so as to rapidly cool the air duct and the drying cylinder, and the cooling time in the cylinder is shortened.

Description

Heat exchange circulation system of drying equipment and drying equipment

Technical Field

The utility model relates to the technical field of drying equipment, and particularly provides a heat exchange circulation system of the drying equipment and the drying equipment.

Background

In recent years, with development of technology and improvement of living standard of people, the types of laundry equipment are continuously promoted to be new, and functions and applications of the laundry equipment are increasingly powerful, so that diversified use demands of users are met, for example, in most families in the prior art, the washing frequency of clothes is high, the quantity of the clothes is large, a long time is required to wait for the clothes to be dried after each washing, and the problem is well solved due to the appearance of clothes treatment equipment such as a dryer or a drying and washing integrated machine, the clothes can be dried rapidly, and the laundry equipment is not influenced by weather and environment, so that the laundry equipment is uniformly accepted in the market.

However, in order to prevent the customer from being scalded, the conventional drying apparatus generally requires a long time to lower the temperature in the drum to a safe interval after the laundry drying is completed, resulting in an excessively long waiting time for the user.

Accordingly, there is a need in the art for a new solution to the above-mentioned problems.

Disclosure of utility model

The utility model aims to solve the technical problems that the prior drying equipment generally needs a long time to reduce the temperature in the drum to a safe interval after the clothes are dried, and the waiting time of a user is too long.

In a first aspect, the present utility model provides a heat exchange circulation system of a drying apparatus, the drying apparatus includes a drying drum, an air duct, and a fan, two ends of the air duct are respectively connected with an air inlet and an air outlet of the drying drum, the fan is capable of generating a circulating air flow between the air duct and the drying drum, the heat exchange circulation system includes a first compressor, a first condenser, a second compressor, a second condenser, and an evaporator, the first condenser and the evaporator are located in the air duct, the second condenser is located outside the air duct, an air outlet of the first compressor is connected with a first end of the first condenser, a second end of the first condenser is connected with a first end of the evaporator, thereby forming a first heat exchange cycle, and independently operating the first compressor enables the evaporator and the first condenser to condense and heat the air flow in the air duct, respectively, so as to cool and cool the clothes in the air duct, and the second condenser is capable of being connected with a second end of the first compressor, thereby enabling the second compressor and the second condenser to be connected with the first end of the evaporator, thereby enabling the second end of the first compressor to be connected with the first end of the evaporator, and the second end of the evaporator to be able to be cooled down rapidly cooled.

In the preferred technical scheme of the heat exchange circulation system, the evaporator is internally provided with a plurality of flow passages, each flow passage is internally provided with a valve which can be independently opened and closed, and the flow of the evaporator can be regulated by controlling the opening and closing of a certain number of valves, so that the refrigeration intensity of the evaporator is regulated.

In the preferred technical scheme of the heat exchange circulation system, the first end of the evaporator is communicated with the second end of the first condenser and the second end of the second condenser through a three-way valve, and/or the second end of the evaporator is communicated with the air return port of the first compressor and the air return port of the second compressor through a three-way valve.

In a second aspect, the utility model provides a drying device comprising the drying cylinder, a fan, an air duct and a heat exchange circulating system.

In the preferred technical scheme of the drying device, the drying device further comprises a temperature sensor arranged in the drying cylinder, and the temperature sensor can detect the real-time temperature in the drying cylinder.

In the preferred technical scheme of the drying device, the drying device further comprises a humidity sensor arranged at the air outlet of the drying cylinder, and the humidity sensor can detect the humidity of the air flow.

In the preferred technical scheme of the drying device, the drying device further comprises a filter device arranged at the air outlet of the drying cylinder.

In a preferred embodiment of the above drying apparatus, the evaporator extends in the direction of the air flow, and/or the first condenser extends in the direction of the air flow, so as to increase the contact area between the evaporator and/or the first condenser and the air flow.

In the preferred technical scheme of the drying device, the drying device further comprises a water draining device and a water collecting device which are arranged at the bottom of the evaporator, so that condensed water is drained out of the air duct and collected.

In the preferable technical scheme of the drying equipment, the drying equipment is arranged as a washing and drying integrated machine.

Under the condition that the technical scheme is adopted, the drying equipment comprises the drying cylinder, the air duct and the fan, wherein two ends of the air duct are respectively communicated with the air inlet and the air outlet of the drying cylinder, the fan can generate circulating air flow between the air duct and the drying cylinder, the heat exchange circulating system comprises a first compressor, a first condenser, a second compressor, a second condenser and an evaporator, the first condenser and the evaporator are positioned in the air duct, the second condenser is positioned outside the air duct, the air outlet of the first compressor is communicated with the first end of the first condenser, the second end of the first condenser is communicated with the first end of the evaporator, the second end of the evaporator is communicated with the air return port of the first compressor, so that a first heat exchange cycle is formed, the first compressor and the first condenser can be independently operated to condense and heat the air flow in the air duct to dehumidify and dry clothes in the drying cylinder, the air outlet of the second compressor is communicated with the first end of the second condenser, the second end of the second condenser is communicated with the first end of the evaporator, the second end of the second condenser is communicated with the second end of the second condenser, the second end of the second compressor is communicated with the second air return port of the second compressor alone, and the second compressor can be cooled and cooled down, the clothes can be cooled and cooled down, and the clothes can be cooled down and cooled down. Through the arrangement, on one hand, the evaporator is simultaneously connected with two refrigeration cycles, after the clothes drying program is finished and the first heat exchange cycle is closed, the second heat exchange cycle is started, so that the evaporator can continue to refrigerate, the temperatures in the air duct and the drying cylinder are reduced rapidly, the cooling time is shortened, the waiting time for taking clothes is saved for a user, and the use experience is improved; on the other hand, the increase of energy consumption is controlled, and the great increase of the use cost is avoided; on the other hand, the existing space of the drying equipment is fully utilized, the equipment structure is not required to be greatly changed, and the equipment structure is more compact.

Furthermore, the evaporator is internally provided with a plurality of flow passages, each flow passage is internally provided with a valve which can be independently opened and closed, and the flow of the evaporator can be adjusted by controlling the opening and closing of a certain number of valves, so that the refrigeration intensity of the evaporator is adjusted. By such arrangement, the refrigerating intensity of the evaporator can be adjusted, so that different clothes amounts and temperatures in the drum can be adapted.

Still further, the first end of the evaporator of the present utility model is in communication with the second end of the first condenser and the second end of the second condenser through a three-way valve, and/or the second end of the evaporator is in communication with the return air port of the first compressor and the return air port of the second compressor through a three-way valve. Through the arrangement, the structure of the heat exchange circulation system is simplified, and the connection structure of the evaporator and the first condenser and the second condenser is simple and compact.

In addition, the drying equipment further provided by the utility model comprises the drying cylinder, the fan, the air duct and the heat exchange circulating system, and further has the technical effect of the heat exchange circulating system.

Still further, the drying apparatus of the present utility model further comprises a temperature sensor provided in the drying drum, the temperature sensor being capable of detecting a real-time temperature in the drying drum. Through such setting, can real-time detection stoving in-cylinder temperature to start to stop, the flow of evaporimeter to the second compressor carries out accurate control, has improved drying equipment's operating efficiency.

Still further, the drying apparatus of the present utility model further includes a humidity sensor provided at an air outlet of the drying drum, the humidity sensor being capable of detecting humidity of the air flow. By such arrangement, the refrigeration intensity of the evaporator can be adjusted according to the humidity of the air flow, and the dehumidification efficiency of the evaporator can be further adjusted.

Still further, the drying apparatus of the present utility model further comprises a filtering device provided at an air outlet of the drying drum. Through such setting, can filter the foreign matter such as filth that drying drum underwear thing dropped, prevent that it from being inhaled in the wind channel and influence the operation of fan.

Still further, the evaporator of the present utility model extends in the direction of the air flow and/or the first condenser extends in the direction of the air flow to increase the contact area of the evaporator and/or the first condenser with the air flow. By such an arrangement, the condensing efficiency of the evaporator to the air flow and the heating efficiency of the first condenser to the air flow can be improved.

Still further, the drying apparatus of the present utility model further comprises a drainage device and a water collecting device provided at the bottom of the evaporator to drain condensed water out of the air duct and collect the condensed water. By such arrangement, the condensed water is prevented from accumulating in the air duct to cause frosting of the air duct.

Still further, the drying apparatus of the present utility model is provided as a washing and drying integrated machine.

Drawings

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:

Fig. 1 is a schematic structural view of a heat exchange circulation system of a drying apparatus of the present utility model.

List of reference numerals:

1. An air duct; 21. a first compressor; 22. a second compressor; 31. a first condenser; 32. a second condenser; 4. an evaporator.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "inner", "outer", "upper", "lower", "top", "bottom", and the like, which indicate a direction or a positional relationship, are based on the direction or the positional relationship shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "mounted" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

The prior drying equipment based on the background technology requires a long time to reduce the temperature in the drum to a safe interval after the clothes are dried, so that the technical problem of overlong waiting time of users is caused. The utility model provides a heat exchange circulation system of drying equipment and the drying equipment, and aims to ensure that the heat exchange circulation system of the drying equipment comprises a first compressor, a first condenser, a second compressor, a second condenser and an evaporator, wherein the first condenser and the evaporator are positioned in an air duct, the second condenser is positioned outside the air duct, the first compressor, the first condenser and the evaporator form a first heat exchange circulation, the second compressor, the second condenser and the evaporator form a second heat exchange circulation, the evaporator and the first condenser can dehumidify and heat air flow by independently operating the first heat exchange circulation, the evaporator can be continuously refrigerated after the first heat exchange circulation is closed so as to quickly cool the air duct and the drying cylinder, and the cooling time in the cylinder is shortened.

Specifically, as shown in fig. 1, the drying apparatus of the present utility model comprises a drying drum (not shown in the drawing), an air duct 1 and a fan (not shown in the drawing), wherein two ends of the air duct 1 are respectively communicated with an air inlet and an air outlet of the drying drum, the fan is capable of generating circulating air flow between the air duct 1 and the drying drum, the heat exchange circulating system comprises a first compressor 21, a first condenser 31, a second compressor 22, a second condenser 32 and an evaporator 4, the first condenser 31 and the evaporator 4 are positioned in the air duct 1, the second condenser 32 is positioned outside the air duct 1, an air outlet of the first compressor 21 is communicated with a first end of the first condenser 31, a second end of the first condenser 31 is communicated with a first end of the evaporator 4, a second end of the evaporator 4 is communicated with an air return port of the first compressor 21, thereby forming a first heat exchange cycle, the first compressor 21 is independently operated to enable the evaporator 4 and the first condenser 31 to condense and heat the air flow in the air duct 1 respectively, so as to dehumidify and dry the clothes in the drying drum, the air outlet of the second compressor 22 is positioned outside the air duct 1, an air outlet of the second condenser 22 is communicated with a second condenser 22 is further communicated with a second condenser 22 at a low temperature, thereby enabling the second end of the second condenser 4 to be rapidly cooled and the second condenser 4 is communicated with the second condenser 4, thereby being capable of rapidly cooled and the second condenser 4 is continuously cooled.

Illustratively, the drying cylinder and the air duct 1 are both positioned in the shell of the drying device, the fan is positioned at the air outlet of the drying cylinder, the air in the air duct 1 can be sent into the drying cylinder from the air inlet through the rotation of the fan, and then the air in the drying cylinder is sucked into the air duct 1 from the air outlet, so that circulating air flow is formed.

The evaporator 4 and the first condenser 31 are arranged in the air duct 1 in the direction of air flow and constitute a first heat exchange cycle with the first compressor 21, and in the drying mode, the first compressor 21 is operated alone such that the refrigerant flowing through the evaporator 4 absorbs external heat, resulting in a decrease in the surface temperature of the evaporator 4, and the refrigerant flowing through the first condenser 31 emits heat to the outside, resulting in an increase in the surface temperature of the first condenser 31.

Therefore, the air with higher humidity discharged from the drying cylinder firstly passes through the evaporator 4, and in the process of contacting with the evaporator 4, the water vapor in the air condenses into water drops after being cooled, so that the moisture is separated from the air, the air is dehumidified, then the dried cold air is heated by the first condenser 31 and becomes high-temperature dried air, and the air enters the drying cylinder again under the action of the fan, so that the clothes are heated on one hand, and the moisture in the clothes is absorbed and brought out of the drying cylinder on the other hand.

The second compressor 22 and the second condenser 32 are additionally arranged in the utility model, and form a second heat exchange cycle with the evaporator 4, the first heat exchange cycle and the second heat exchange cycle share the evaporator 4, wherein the second condenser 32 is arranged outside the air duct 1 so as to discharge the heat absorbed by the evaporator 4 from the air duct 1 to the outside of the air duct 1, and the heat exchange between the inside and the outside of the air duct 1 is realized, so that after the clothes drying procedure is finished and the first heat exchange cycle is finished, the air duct 1 and the drying cylinder are still in a high-temperature environment, the second compressor 22 is started at the moment, the refrigerant flowing through the evaporator 4 absorbs the heat under the action of the second compressor 22, so that the surface of the evaporator 4 is kept at a lower temperature, then the refrigerant brings the absorbed heat into the second condenser 32 and is released into the external environment through the second condenser 32, and meanwhile, the first condenser 31 does not heat the air duct 1, so that the temperature of the air duct 1 and the drying cylinder can be quickly reduced by the evaporator 4, and the user can take the clothes under the safe environment.

Through the arrangement, on one hand, the evaporator 4 is simultaneously connected with two refrigeration cycles, after the clothes drying program is finished and the first heat exchange cycle is closed, the second heat exchange cycle is started, so that the evaporator 4 can continue to refrigerate, the temperatures in the air duct 1 and the drying cylinder are reduced rapidly, the cooling time is shortened, the waiting time for taking clothes is shortened for a user, and the use experience is improved; on the other hand, the increase of energy consumption is controlled, and the great increase of the use cost is avoided; on the other hand, the existing space of the drying equipment is fully utilized, the equipment structure is not required to be changed greatly, and the equipment structure is more compact.

Preferably, as shown in fig. 1, the evaporator 4 of the present utility model has a plurality of flow channels (not shown in the figure), each flow channel has a valve that can be opened and closed independently, and the flow rate of the evaporator 4 can be adjusted by controlling the opening and closing of a certain number of valves, so as to adjust the refrigeration intensity of the evaporator 4.

The two ends of each flow passage are respectively communicated with the first end and the second end of the evaporator 4, and each flow passage can be independently controlled to be opened and closed through the opening and closing of the valve, so that when the air humidity in the air duct 1 is high, all the valves are required to be opened, and all the flow passages are in an open state, so that the maximum flow of the evaporator 4 is achieved, the condensation efficiency of the evaporator 4 on wet air is improved, and when the air humidity in the air duct 1 is low, only a part of flow passages are required to be in an open state, and at the moment, a part of valves are required to be closed, so that the load of the compressor is reduced, and the energy consumption is reduced.

This allows the heat exchange cycle to adjust the intensity of the refrigeration of the evaporator 4 to accommodate different amounts of laundry and temperatures inside the drum.

Preferably, as shown in fig. 1, the first end of the evaporator 4 of the present utility model communicates with the second end of the first condenser 31 and the second end of the second condenser 32 through a three-way valve, and/or the second end of the evaporator 4 communicates with the return air port of the first compressor 21 and the return air port of the second compressor 22 through a three-way valve.

When the first heat exchange cycle is running, the refrigerant automatically enters the first circulation pipeline under the action of the first compressor 21, and when the second heat exchange cycle is running, the refrigerant automatically enters the second circulation pipeline under the action of the second compressor 22, so the three-way valve is arranged, the structure of the heat exchange cycle system is simplified, and the connection structure between the evaporator 4 and the first condenser 31 and the second condenser 32 is simple and compact.

In addition, the drying equipment further provided by the utility model on the basis of the technical scheme comprises the drying cylinder, the fan, the air duct 1 and the heat exchange circulating system, and the drying cylinder can be dried and dehumidified and the cooling of the drying cylinder can be realized through the independent operation of two circulating pipelines of the heat exchange circulating system.

Compared with the drying equipment before improvement, the drying equipment provided by the utility model can quickly cool the drying cylinder after drying the clothes, so that a user can take out the clothes in a short time, the waiting cooling time is saved, and the use experience of the user is improved.

Preferably, as shown in fig. 1, the drying apparatus of the present utility model further includes a temperature sensor (not shown) provided in the drying drum, the temperature sensor being capable of detecting a real-time temperature in the drying drum.

The temperature sensor is utilized to enable the controller to timely acquire the real-time temperature in the drying cylinder, so that the second compressor 22 is timely closed after the temperature in the drying cylinder is reduced to a safe temperature interval, the cylinder cover is unlocked, a cooling process is completed, and a user can conveniently take clothes.

Therefore, the temperature sensor can detect the temperature in the drying cylinder in real time so as to accurately control the start and stop of the second compressor 22 and the flow of the evaporator 4, and the operation efficiency of the drying equipment is improved.

Preferably, as shown in fig. 1, the drying apparatus of the present utility model further includes a humidity sensor (not shown) provided at an air outlet of the drying drum, the humidity sensor being capable of detecting humidity of the air flow.

Specifically, the humidity sensor is disposed upstream of the evaporator 4 to detect the humidity of the air discharged from the inside of the drying drum, when the amount of laundry in the drying drum is large, the humidity is high, the humidity of the discharged air is also high, and when the amount of laundry in the drying drum is small, the humidity of the discharged air is also low, so that the humidity of the air upstream of the evaporator 4 is detected, the refrigerating intensity of the evaporator 4 can be adjusted according to the humidity of the air flow, and the dehumidifying efficiency of the evaporator 4 can be adjusted.

Preferably, as shown in fig. 1, the drying apparatus of the present utility model further includes a filtering device (not shown) provided at an air outlet of the drying cylinder.

The filter equipment installs in the air outlet department of stoving section of thick bamboo, and its edge is sealed fixed with the air outlet, and filter equipment's middle part is the filter face for the air current must pass filter equipment's filter face from the in-process that the air outlet got into wind channel 1, and filter face can filter the foreign matter such as filth that stoving section of thick bamboo underwear thing dropped, prevents that it from being inhaled in the wind channel 1 and influence the operation of fan.

In practical applications, those skilled in the art may flexibly set the filtering device as a filter screen, a filter element, etc., so long as the filtering device can filter impurities in the air flow, and such flexible adjustment and modification should not deviate from the principle and scope of the present utility model, and should be limited in the protection scope of the present utility model.

Preferably, as shown in fig. 1, the evaporator 4 of the present utility model extends in the direction of the air flow and/or the first condenser 31 extends in the direction of the air flow to increase the contact area of the evaporator 4 and/or the first condenser 31 with the air flow.

Illustratively, the evaporator 4 and the first condenser 31 may each be provided in a rectangular parallelepiped structure, and the length directions of the evaporator 4 and the first condenser 31 coincide with the flow direction of the air, thereby increasing the contact area with the air.

Or the evaporator 4 and the first condenser 31 may be further provided in a plate-like structure, and the number of the evaporator 4 and the first condenser 31 is set to be plural, and the plurality of evaporators 4 and the plurality of first condensers 31 are each provided at intervals along the flow direction of the air so that the air flow can pass through each evaporator 4 and the first condenser 31 in turn, as well as the contact area with the air can be increased.

By such an arrangement, the condensing efficiency of the evaporator 4 on the air flow and the heating efficiency of the first condenser 31 on the air flow can be improved.

Preferably, as shown in fig. 1, the drying apparatus of the present utility model further includes a drainage device (not shown) and a water collecting device (not shown) provided at the bottom of the evaporator 4 to drain condensed water out of the air duct 1 and collect the condensed water.

Illustratively, the drainage device may be configured as a drainage hole, or a combination of the drainage hole and a drainage pump, and the water accumulation device may be configured as a water collection container such as a water collection bottle or a water collection tank, so as to timely drain the condensed water out of the air duct 1, and prevent the condensed water from accumulating in the air duct 1 to cause frosting of the air duct 1.

Preferably, as shown in fig. 1, the drying apparatus of the present utility model is provided as a washing and drying integrated machine.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims (10)

1. The heat exchange circulation system of the drying equipment comprises a drying cylinder, an air duct and a fan, wherein two ends of the air duct are respectively communicated with an air inlet and an air outlet of the drying cylinder, the fan can generate circulating air flow between the air duct and the drying cylinder, the heat exchange circulation system is characterized by comprising a first compressor, a first condenser, a second compressor, a second condenser and an evaporator, the first condenser and the evaporator are positioned in the air duct, the second condenser is positioned outside the air duct,

The exhaust port of the first compressor is communicated with the first end of the first condenser, the second end of the first condenser is communicated with the first end of the evaporator, the second end of the evaporator is communicated with the air return port of the first compressor, so that a first heat exchange cycle is formed, the first compressor is independently operated to enable the evaporator and the first condenser to respectively condense and heat the air flow in the air duct to dehumidify and dry the clothes in the drying cylinder,

The exhaust port of the second compressor is communicated with the first end of the second condenser, the second end of the second condenser is communicated with the first end of the evaporator, the second end of the evaporator is communicated with the air return port of the second compressor, so that a second heat exchange cycle is formed, after clothes drying is completed, the second compressor is independently operated, the evaporator can continuously refrigerate to quickly reduce the temperature in the air duct and the drying cylinder, and clothes can be taken out quickly.

2. The heat exchange circulation system according to claim 1, wherein the evaporator has a plurality of flow passages, each flow passage has a valve capable of being opened and closed independently, and the flow rate of the evaporator and thus the refrigerating strength of the evaporator can be adjusted by controlling the opening and closing of a certain number of valves.

3. The heat exchange cycle system of claim 2, wherein the first end of the evaporator is in communication with the second end of the first condenser and the second end of the second condenser via a three-way valve and/or the second end of the evaporator is in communication with the return air port of the first compressor and the return air port of the second compressor via a three-way valve.

4. A drying apparatus comprising the drying drum of any one of claims 1 to 3, a blower, an air duct, and a heat exchange circulation system.

5. The drying apparatus of claim 4, further comprising a temperature sensor disposed within the drying drum, the temperature sensor being capable of detecting a real-time temperature within the drying drum.

6. The drying apparatus of claim 4, further comprising a humidity sensor disposed at an outlet of the drying drum, the humidity sensor being capable of detecting humidity of the air stream.

7. The drying apparatus of claim 4, further comprising a filter device disposed at an outlet of the drying drum.

8. Drying apparatus according to claim 4 wherein the evaporator extends in the direction of the air flow and/or the first condenser extends in the direction of the air flow to increase the contact area of the evaporator and/or the first condenser with the air flow.

9. The drying apparatus according to claim 8, further comprising a drain and a water collecting device provided at a bottom of the evaporator to drain condensed water out of the air duct and collect the condensed water.

10. The drying apparatus according to any one of claims 5 to 9, characterized in that the drying apparatus is provided as a washing and drying integrated machine.