CN216074428U - Clothes dryer - Google Patents

Abstract

The utility model provides a clothes dryer, which comprises a drying cylinder and an air duct, wherein the air duct comprises a cooler, an evaporator, a heat exchanger and a condenser which are sequentially connected end to end, the cooler is connected with an air outlet of the drying cylinder, the condenser is connected with an air inlet of the drying cylinder, and the clothes dryer further comprises: and the water circulation system comprises a cooler, a heat exchanger, a water tray and a condensed water box which are in circulating connection, and the condensed water box and the condensed water in the water tray circularly flow in the water circulation system. In a water circulation system of the clothes dryer, the condensed water flowing through the cooler can absorb heat to raise the temperature after precooling the air, the heated condensed water flows into the heat exchanger again to cool the low-temperature air entering the heat exchanger, then the temperature of the condensed water is reduced, and the cooled condensed water finally flows into the water tray, so that a better precooling effect is provided, meanwhile, the energy loss is also reduced, and the drying efficiency is improved.

Description

Clothes dryer

Technical Field

The utility model belongs to the technical field of clothes dryers, and particularly relates to a clothes dryer.

Background

A heat pump clothes dryer is a new type of clothes (or textiles) drying apparatus using heat pump technology. In a heat pump dryer system, there are two closed cycles of heat pump cycle and air cycle, which exchange heat with a condenser through an evaporator. In the heat pump cycle, the compressor works to consume a small amount of electric energy to drive the refrigerant to circulate, so that the refrigerant absorbs exhaust waste heat and latent heat of condensed water from the clothes drying barrel in the evaporator, and heat is discharged to air entering the clothes drying barrel at a higher temperature in the condenser. In the air circulation, under the driving of a fan, the temperature of the damp and hot air discharged from the clothes drying barrel is reduced in an evaporator, and the moisture in the air is condensed and separated out; then, the low-temperature air with low moisture content is heated through the condenser, but the moisture content is unchanged, the relative humidity is reduced, and the capacity of absorbing moisture of the air is very strong; finally, the air with high temperature and low relative humidity blows over the surface of the clothes, and the clothes perform heat and moisture exchange, emit heat and take away moisture. Because the system continuously inputs electric energy, in order to maintain the energy balance of the circulating air, the system needs to maintain the stability of the system by arranging an auxiliary cooler, an auxiliary condenser or supplementary fresh air. The heat pump clothes dryer has the advantages of low energy consumption, small influence on indoor air quality, good clothes drying effect and the like; meanwhile, the drying temperature of the heat pump clothes dryer is lower than that of the electric heating clothes dryer, so that the damage of overhigh air temperature to the surface of clothes is avoided.

However, the existing heat pump dryer technology still has a problem: when condensate water in the condensate water box flows into the cooler to pre-condense air, the temperature of the condensate water can rise, and the condensate water can be directly drained into the water tray to affect the condensation efficiency.

In view of the above, the present invention is particularly proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a clothes dryer which solves the problems of low condensing efficiency and high energy loss of the prior clothes dryer.

In order to realize the purpose of the utility model, the basic concept of the technical scheme adopted by the utility model is as follows:

the utility model provides a clothes dryer, which comprises a drying cylinder and an air duct, wherein the air duct comprises a cooler, an evaporator, a heat exchanger and a condenser which are sequentially connected end to end, the cooler is connected with an air outlet of the drying cylinder, the condenser is connected with an air inlet of the drying cylinder, and the clothes dryer further comprises:

and the water circulation system comprises a cooler, a heat exchanger, a water tray and a condensed water box which are in circulating connection, and the condensed water box and the condensed water in the water tray circularly flow in the water circulation system.

Furthermore, water circulation channels are respectively arranged in the cooler and the heat exchanger, a water outlet of the water circulation channel of the cooler is connected with a water inlet of the water circulation channel of the heat exchanger, a water inlet of the water circulation channel of the cooler is connected with the condensed water box, and a water outlet of the water circulation channel of the heat exchanger is connected with the water tray.

Further, a valve is installed between the condensed water box and the cooler, and the valve is configured to control the connection and disconnection between the condensed water box and the cooler.

Further, the condensed water box is positioned above the cooler, and condensed water in the condensed water box can flow into the cooler from top to bottom under the action of gravity.

Further, the condensate water box is installed at the upper end of the water tray, the condensate water box is communicated with the water tray through a pipeline, a water pump is arranged on the pipeline, and condensate water in the water tray is driven by the water pump to flow into the condensate water box.

Furthermore, the inside of the condensed water box is provided with a semiconductor refrigeration piece, and the semiconductor refrigeration piece enables the condensed water of the condensed water box to be cooled.

Furthermore, the semiconductor refrigeration piece is connected with the semiconductor heating piece, the semiconductor heating piece is located in the air outside the condensed water box, and the semiconductor refrigeration piece is cooled by carrying out heat exchange with the air.

Further, an air channel is arranged inside the cooler and the heat exchanger, an air inlet of the air channel of the cooler is connected with an air outlet of the drying cylinder, and an air outlet of the air channel of the cooler is connected with the evaporator; and an air inlet of an air channel of the heat exchanger is connected with the evaporator, and an air outlet of the air channel is connected with the condenser.

Furthermore, the air channels in the heat exchanger at least comprise first air channels, the first air channels and the water circulation channels are sequentially and alternately stacked, the low-temperature dry air flowing through the evaporator preferentially passes through the first air channels, the temperature of the condensed water flowing through the cooler is increased, and the condensed water and the low-temperature dry air flowing through the first air channels are subjected to heat exchange.

Furthermore, the air channel also comprises a second air channel, the first air channel and the second air channel are communicated with each other, the second air channel is not adjacently arranged with the water circulation channel in the heat exchanger, and the heat exchanger preheats the air flowing through the second air channel.

After adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

1. in a water circulation system of the clothes dryer, the condensed water flowing through the cooler can absorb heat to raise the temperature after precooling the air, the heated condensed water flows into the heat exchanger again to cool the low-temperature air entering the heat exchanger, then the temperature of the condensed water is reduced, and the cooled condensed water finally flows into the water tray, so that a better precooling effect is provided, meanwhile, the energy loss is also reduced, and the drying efficiency is improved.

2. The condensed water flowing into the heat exchanger from the cooler exchanges heat with the low-temperature drying air flowing into the first air channel from the evaporator, the low-temperature drying air in the first air channel is primarily and preferentially heated, the condensed water is cooled, the energy loss of the clothes dryer is reduced, and the energy utilization rate is improved.

3. The condensed water in the heat exchanger is cooled and then directly flows into the water tray, and is mixed with the condensed water separated out by the evaporator and then conveyed into the condensed water box by the pump body, so that the energy loss is reduced, and the condensing efficiency of the clothes dryer is improved.

4. In the water circulation system, the condensed water is used as a cooling medium, so that the cost is saved; meanwhile, the volume of the condensed water box is large, and the amount of condensed water which can be provided for the cooler is large by using the condensed water in the condensed water box, so that the pre-cooling effect of the cooler is kept to be optimal, and the pre-cooling dehumidification effect is good.

Meanwhile, the utility model has simple structure, simple method and obvious effect and is suitable for popularization and use.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model without limiting the utility model to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic view of a dryer in an embodiment of the present invention.

Description of the main elements in the figures:

1. a water pan; 2. an evaporator; 3. a condensed water box; 4. a cooler; 5. a heat exchanger; 6. a condenser; 7. a valve; 8. a drying cylinder; 9. a semiconductor refrigeration sheet; 10. a semiconductor heat generating sheet.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model introduces a clothes dryer, which comprises a heat pump circulating system and a water circulating system, wherein the heat pump circulating system comprises a drying cylinder 8 and an air duct which are communicated, the drying cylinder 8 is provided with an air inlet and an air outlet, one end of the air duct is communicated with the air inlet, the other end of the air duct is communicated with the air outlet, the heat pump circulating system also comprises a fan, and air flows in the drying cylinder 8 and the air duct under the action of the fan so as to take away moisture on clothes in the drying cylinder 8 and dry the clothes.

The water circulation system comprises a water tray 1, a heat exchanger 5, a condensed water box 3 and a cooler 4 which are communicated with each other, and is used for cooling and dehumidifying the hot and humid air coming out of the air outlet of the drying cylinder 8. The condensate water in the condensate water box 3 circulates among the water tray 1, the heat exchanger 5, the condensate water box 3 and the cooler 4 to exchange heat with the air in the air duct, and meanwhile, the condensate water in the water tray 1 can be mixed with the condensate water in the condensate water box 3. The evaporator 2 can cool and dehumidify the damp-heat air to become low-temperature dry air, the condenser 6 can warm the low-temperature dry air to become high-temperature dry air and then enter the drying drum 8, and the high-temperature dry air dries clothes in the drying drum 8.

Example one

As shown in fig. 1, in the embodiment of the present invention, the water circulation system is shown by the dotted line, and the heat pump circulation system is shown by the solid line. Introduction a clothes dryer comprising: the water circulation system comprises a cooler 4, a heat exchanger 5, a water tray 1 and a condensed water box 3 which are connected in a circulating manner;

wherein, cooler 4 and 5 inside hydrologic cycle passageways that are equipped with respectively of heat exchanger 5, the delivery port of the hydrologic cycle passageway of cooler 4 links to each other with the water inlet of the hydrologic cycle passageway of heat exchanger 5, the water inlet of the hydrologic cycle passageway of cooler 4 links to each other with condensate water box 3, the delivery port of the hydrologic cycle passageway of heat exchanger 5 links to each other with water tray 1, the comdenstion water in the water tray 1 can be with the mixture of the comdenstion water in condensate water box 3, the circulation flow in hydrologic cycle system.

In the embodiment of the utility model, the cooler 4 is communicated with the water circulation channel in the heat exchanger 5, the condensed water precools the damp and hot air in the water circulation channel of the cooler 4, the condensed water absorbs heat after precooling, the temperature is increased, if the condensed water having an increased temperature is directly drained into the water tray 1 or the condensed water tank 3 through a pipe at this time, the temperature of the condensed water in the water tray 1 or the condensed water box 3 may be increased, and eventually the condensing effect of the dryer may be reduced, therefore, in the present embodiment, the condensed water with an increased temperature flows into the heat exchanger 5, and the heat exchanger 5 of the present invention preheats the low-temperature dried air flowing out from the evaporator 2, and the low-temperature dried air is heated by the condensed water with an increased temperature, and the condensed water exchanges heat with the low-temperature dried air, and the temperature of the condensed water is lowered, and finally the condensed water flows into the water tray 1. Through the arrangement, the energy loss of the clothes dryer is reduced, the condensing efficiency of the clothes dryer is improved, and the drying time is shortened.

In this embodiment, the cooler 4 is disposed between the air outlet of the drying cylinder 8 and the evaporator 2, the cooler 4 has a bent extending channel, and the condensed water in the channel pre-condenses the air in the air duct. The comdenstion water circulates between cooler 4, heat exchanger 5, water tray 1 and condensate water box 3, and the damp and hot air that comes out from the air outlet of drying cylinder 8 contacts with cooler 4, and the comdenstion water in the passageway of damp and hot air and cooler 4 carries out the heat exchange, realizes the precondensation, reaches the purpose of preliminary cooling dehumidification for the temperature and the humidity of damp and hot air all reduce after contact with evaporimeter 2, condenser 6 again, become in the dry hot air gets into drying cylinder 8. The setting of cooler 4 carries out the precooling to humid and hot air, and through the precooling, the preliminary cooling dehumidification of high temperature and high humidity air can improve dehumidification efficiency among the drying system to accelerate the clothing speed of drying of clothing.

Meanwhile, the condensed water flowing into the cooler 4 is the condensed water from the condensed water box 3, but not the condensed water in the water tray 1, the condensed water box 3 has a large volume, so that a large amount of condensed water can be provided for the cooler 4, and the condensed water in the water tray 1 is only the condensed water separated out from the evaporator 2, so that the amount is small, and the condensing effect is poor. In this embodiment, the cooler 4 uses the condensed water in the condensed water box 3, so that the pre-cooling effect of the cooler 4 is kept optimal, and the pre-cooling dehumidification effect is good. Not only makes full use of the condensed water, but also improves the drying efficiency and saves the energy consumption. The channel setting through with cooler 4 is the form of buckling and extends, increases the area of contact of passageway and damp hot air for damp hot air can carry out abundant heat transfer with the comdenstion water, and cooling dehumidification effect is better.

The evaporator 2 is located between the condenser 6 and the cooler 4, so that the hot and humid air coming out from the air outlet of the drying cylinder 8 is firstly contacted with the cooler 4, is preliminarily cooled and dehumidified, is then contacted with the evaporator 2, becomes low-temperature dry air, and the condenser 6 can heat the low-temperature dry air to become high-temperature dry air and then enters the drying cylinder 8.

The water tray 1 is located below the evaporator 2 and below the cooler 4. Because cooler 4 carries out the heat exchange with damp and hot air, preliminary cooling dehumidification, can separate out the comdenstion water in the damp and hot air, the comdenstion water flows down along cooler 4, gets into in water tray 1. Similarly, the damp and hot air continues to flow to contact with the evaporator 2 for heat exchange, and condensed water is separated and flows into the water tray 1.

The condensate box 3 is located above the cooler 4, and the condensate in the condensate box 3 can flow from top to bottom into the cooler 4 under the action of gravity.

Specifically, the dryer includes the casing, and the casing is provided with drying cylinder 8, and condensate water box 3 is located drying cylinder 8's top, but user pull condensate water box 3 makes condensate water box 3 break away from, and then pours the condensate water in condensate water box 3, promotes condensate water box 3 and gets into the holding chamber and can make condensate water box 3 reset, and simultaneously, in this embodiment, the user can add a small amount of water in condensate water box 3 in advance, and the condensation efficiency that the reinforcing dryer begins the condensation dehumidification.

A water pump is provided between the water tray 1 and the condensed water box 3, and the water pump is configured to pump the condensed water in the water tray 1 into the condensed water box 3. The condensed water is conveyed into the condensed water box 3 from bottom to top under the action of the water pump.

Be provided with the pipeline between water tray 1 and the comdenstion water box 3, the water pump sets up on the pipeline, and the upper end of pipeline forms sharp mouth, pegs graft with sharp mouth when the comdenstion water box 3 gets into the holding chamber of being convenient for to make comdenstion water box 3 switch on with the pipeline.

A valve 7 is arranged between the condensed water box 3 and the cooler 4, and the valve 7 is configured to control the on-off between the condensed water box 3 and the cooler 4. When the valve 7 is opened, the condensed water can flow from the condensed water box 3 into the cooler 4; when the valve 7 is closed, the condensed water is confined in the condensed water tank 3.

The pipeline is provided with a reversing valve which is connected with a drain pipe, and in the water circulation process, when the water level in the water tray 1 and the water level in the condensed water box 3 both exceed corresponding preset values, the reversing valve reverses to enable the water pump 34 to be communicated with the drain pipe, so that condensed water can be discharged.

As shown in fig. 1, in the embodiment of the present invention, a semiconductor cooling plate 9 is installed in the condensed water box 3, the semiconductor cooling plate 9 cools the condensed water in the condensed water box 3, and a semiconductor heating plate 10 is connected to the semiconductor cooling plate 9 and is placed in the ambient air. Further, the semiconductor heating sheet 10 is located in the air outside the condensed water box 3, and exchanges heat with the air to cool the semiconductor cooling sheet 9. Thus, the semiconductor refrigeration equipment cools the condensed water, so that the precooling effect of the cooler 4 is obvious. In still another embodiment, the temperature of the water in the condensed water box 3 is also reduced by cooling the outside of the condensed water box 3 with a fan.

Example two

As shown in fig. 1, in the embodiment of the present invention, the clothes dryer further includes a drying cylinder 8 and an air duct, a heat pump circulation system is disposed in the air duct, the heat pump circulation system includes a cooler 4, an evaporator 2, a heat exchanger 5 and a condenser 6, which are sequentially connected end to end, the cooler 4 is connected to an air outlet of the drying cylinder 8, and the condenser 6 is connected to an air inlet of the drying cylinder 8.

Wherein, be equipped with the fan in the wind channel, the fan drive air is in the wind channel internal loop flow. The cooler 4 is used for pre-cooling the humid hot gas discharged from the drying cylinder 8. And a heat exchanger 5 is also arranged between the drying cylinder 8 and the condenser 6. The low-temperature drying air flowing through the evaporator 2 is preheated through the heat exchanger 5, the heating time of the condenser 6 can be reduced, the heating efficiency of the condenser 6 is improved, the drying efficiency of the clothes dryer is further improved, the energy consumption is reduced, and the air passing through the heat exchanger 5 finally passes through the condenser 6 and is dried after flowing into the drying drum 8.

Through the structure, the damp-heat gas discharged from the drying cylinder 8 is pre-cooled in the cooler 4 and then enters the evaporator 2 for continuous condensation. The water vapor condensation is accelerated through the cooler 4, the temperature of gas entering the evaporator 2 is reduced, the dehumidification efficiency of the evaporator 2 is improved, the clothes drying time is shortened, the system operation power consumption is reduced, and energy is saved.

In the embodiment, air channels are arranged inside the cooler 4 and the heat exchanger 5, an air inlet of the air channel of the cooler 4 is connected with an air outlet of the drying cylinder 8, and an air outlet of the air channel is connected with the evaporator 2; and an air inlet of an air channel of the heat exchanger 5 is connected with the evaporator 2, and an air outlet of the air channel is connected with the condenser 6. The high-temperature damp and hot air flowing out of the air outlet of the drying cylinder 8 firstly passes through the air channel in the cooler 4, is pre-cooled by condensed water in the water circulation channel of the cooler 4, is reduced in temperature and flows into the evaporator 2, the evaporator 2 is further cooled and dried, the low-temperature dried air flowing out of the evaporator 2 is preheated by the heat exchanger 5 and then flows into the condenser 6, the condenser 6 raises the temperature of the air, and finally the air flows into the drying cylinder 8 to dry and heat clothes, so that air circulation is completed.

In this embodiment, the air passages in the heat exchanger 5 at least include a first air passage and a second air passage, the first air passage and the second air passage are communicated with each other, the first air passage and the water circulation passage are sequentially and alternately stacked, the low-temperature dry air flowing through the evaporator 2 preferentially passes through the first air passage, the temperature of the condensed water flowing through the cooler 4 is increased, and heat exchange is performed with the low-temperature dry air flowing through the first air passage. Because the air after passing through the evaporator 2 is changed into low-temperature dry air, the air enters the heat exchanger 5 and is not completely preheated, the temperature of condensed water is also raised after passing through the cooler 4, the loss of the part of heat is avoided, the cooler 4 is connected with the heat exchanger 5 through a pipeline, the heat of the raised temperature of the condensed water is utilized to carry out heat exchange with the air passing through the first air channel, the condensed water is cooled, the low-temperature dry air is primarily heated, the energy loss of the clothes dryer is avoided, and meanwhile, the drying efficiency is also improved; after the air is dried at low temperature through the first air channel and enters the second air channel, the heat exchanger 5 completely preheats the air in the second air channel, and the preheated air is discharged from the second air channel and enters the condenser 6.

In addition, in this embodiment, the second air channel is not disposed adjacent to the water circulation channel inside the heat exchanger 5, so that the water circulation channel inside the heat exchanger 5 and the second air channel are not affected by each other during operation.

The main working process of the clothes dryer is as follows:

as shown by the dotted line in fig. 1, in the water circulation system, the condensed water firstly flows into the water circulation channel in the cooler 4 from the condensed water box 3 to pre-cool the air in the cooler 4, at this time, the temperature of the condensed water is raised, the condensed water enters the water circulation channel of the heat exchanger 5 with heat, and is subjected to heat cooling with the air entering the first air channel in the heat exchanger 5 to reduce the temperature of the condensed water, and finally flows into the water tray 1, and the condensed water separated out from the evaporator 2 is conveyed into the condensed water box 3 through the water pump, so that the circulating flow of the condensed water is realized.

In the heat pump cycle, as shown in the implementation of fig. 1, the high temperature dry air heated by the condenser 6 enters the drying cylinder 8 through the air duct under the action of the fan and blows over the surface of the clothes. The high-temperature dry air improves the temperature of the clothes through heat and humidity exchange, takes away moisture in the clothes, reduces the temperature of the air, increases the relative humidity and becomes low-temperature high-humidity air. Air discharged from the drying cylinder 8 enters an air channel of the cooler 4 through an air channel, heat is released to condensate water in the cooler 4, and precooling of the air is achieved. The precooled air enters the evaporator 2 through the air duct, and the air is further cooled and dehumidified to become low-temperature low-humidity air. Then, the air enters a first air channel of the heat exchanger 5 through an air channel, and the condensation heat dissipation capacity of condensed water in the heat exchanger 5 is absorbed, so that the preferential heating of the air is realized; and further preheated through a second air passage. The reheated air enters the air channel of the condenser 6 through the air channel and is further heated to become high-temperature dry air, and the high-temperature dry air has strong moisture absorption capacity again. And finally, the high-temperature dry air returns to the fan through the air duct to complete air circulation.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. The utility model provides a clothes dryer, clothes dryer drying cylinder (8) and wind channel, including cooler (4), evaporimeter (2), heat exchanger (5) and condenser (6) that end to end connects gradually in the wind channel, cooler (4) link to each other with the air outlet of drying cylinder (8), condenser (6) link to each other with the air intake of drying cylinder (8), its characterized in that still includes:

the water circulation system comprises a cooler (4), a heat exchanger (5), a water tray (1) and a condensed water box (3) which are in circulation connection, and condensed water in the condensed water box (3) and the water tray (1) circularly flows in the water circulation system.

2. The clothes dryer according to claim 1, characterized in that a water circulation channel is respectively arranged inside the cooler (4) and the heat exchanger (5), a water outlet of the water circulation channel of the cooler (4) is connected with a water inlet of the water circulation channel of the heat exchanger (5), a water inlet of the water circulation channel of the cooler (4) is connected with the condensed water box (3), and a water outlet of the water circulation channel of the heat exchanger (5) is connected with the water tray (1).

3. Laundry dryer according to claim 2, characterized in that a valve (7) is installed between the condensed water box (3) and the cooler (4), said valve (7) being configured to control the opening and closing between the condensed water box (3) and the cooler (4).

4. Laundry dryer according to claim 3, characterized in that the condensate box (3) is located above the cooler (4), the condensate in the condensate box (3) being able to flow from top to bottom into the cooler (4) under the influence of gravity.

5. Clothes dryer according to any one of claims 1 to 4, characterized in that the condensed water box (3) is mounted at the upper end of the water tray (1), the condensed water box (3) is communicated with the water tray (1) through a pipeline, a water pump is arranged on the pipeline, and the water pump drives the condensed water in the water tray (1) to flow into the condensed water box (3).

6. The laundry dryer according to claim 5, characterized in that said condensed water box (3) has a semiconductor cooling plate (9) mounted inside, said semiconductor cooling plate (9) cooling the condensed water of the condensed water box (3).

7. The clothes dryer according to claim 6, characterized in that the semiconductor refrigeration sheet (9) is connected with the semiconductor heating sheet (10), the semiconductor heating sheet (10) is located in the air outside the condensed water box (3), and the semiconductor refrigeration sheet (9) is cooled by heat exchange with the air.

8. Laundry dryer according to any one of claims 1 to 4, characterized in that the cooler (4) and the heat exchanger (5) are internally provided with an air passage, the air inlet of the air passage of the cooler (4) being connected to the air outlet of the drying drum (8) and the air outlet being connected to the evaporator (2); and the air inlet of an air channel of the heat exchanger (5) is connected with the evaporator (2), and the air outlet is connected with the condenser (6).

9. Laundry dryer according to claim 1 or 8, characterized in that the air passages inside the heat exchanger (5) comprise at least a first air passage, the first air passage and the water circulation passage being alternately stacked in sequence, the low-temperature drying air flowing through the evaporator (2) preferentially passes through the first air passage, the temperature of the condensed water flowing through the cooler (4) increases, and heat exchange is carried out with the low-temperature drying air flowing through the first air passage.

10. Laundry dryer according to claim 9, characterized in that said air channel further comprises a second air channel, said first and second air channels being in communication with each other, said second air channel being not arranged adjacent to the water circulation channel inside the heat exchanger (5), the heat exchanger (5) preheating the air flowing through the second air channel.

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