CN216338598U

CN216338598U - Heat pump system and clothes dryer

Info

Publication number: CN216338598U
Application number: CN202120871458.XU
Authority: CN
Inventors: 伍亚
Original assignee: Wuxi Little Swan Electric Co Ltd
Current assignee: Wuxi Little Swan Electric Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2022-04-19
Anticipated expiration: 2031-04-26

Abstract

The application discloses a heat pump system and a clothes dryer, wherein the heat pump system comprises an evaporator, a compressor, a condenser, a throttle valve and a cooling system, the evaporator, the compressor, the condenser and the throttle valve are sequentially connected to form a first circulation loop, and a refrigerant flows in the first circulation loop; the cooling system comprises a cooling pipeline, wherein an inlet of the cooling pipeline is connected with a refrigerant outlet of the evaporator, and refrigerant flowing out of the refrigerant outlet of the evaporator is suitable for entering the cooling pipeline to cool the compressor.

Description

Heat pump system and clothes dryer

Technical Field

The utility model relates to the technical field of household appliances, in particular to a heat pump system and a clothes dryer.

Background

After the clothes are washed by the washing machine, the water content is still high, and the clothes can be dried after a long time. The clothes dryer can dry clothes, the clothes can be dried immediately after the clothes are dried, and the clothes dryer greatly facilitates the life of people. The heat dissipation of the compressor in the clothes dryer is large, when the heat dissipation of the compressor is poor, the compressor is continuously started and stopped (particularly under the condition of high ambient temperature), the drying time is prolonged, the energy consumption is increased, and the compressor is also easy to damage. Some dryers are provided with a fan for cooling the compressor, but dryers with a fan still have various drawbacks: 1. the fan is a single heat dissipation structure, the stability and the reliability of the fan are poor, and the fan is easy to generate faults, so that the clothes dryer cannot work reliably; 2. the heat dissipation mode of the fan has the advantages that when the temperature inside the clothes dryer is high, the cooling effect on the compressor is poor, and the working reliability of the clothes dryer in long-time operation or high ambient temperature is further reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a heat pump system and a clothes dryer, the heat dissipation effect of a compressor is good, the energy consumption is reduced, due to the fact that a heat dissipation structure without a fan is added, extra noise is not generated in the working process of the cooling system, the working reliability is high, the heat dissipation capacity is strong when the environment temperature where the compressor is located is high, and the working efficiency of the heat pump system and the work efficiency of the clothes dryer are improved.

The embodiment of the application provides a heat pump system, which comprises an evaporator, a compressor, a condenser, a throttle valve and a cooling system, wherein the evaporator, the compressor, the condenser and the throttle valve are sequentially connected to form a first circulation loop, and a refrigerant flows in the first circulation loop;

the cooling system comprises a cooling pipeline, wherein an inlet of the cooling pipeline is connected with a refrigerant outlet of the evaporator, and refrigerant flowing out of the refrigerant outlet of the evaporator is suitable for entering the cooling pipeline to cool the compressor.

In an exemplary embodiment, the cooling system further includes a control valve disposed on the cooling line, and the control valve controls on/off of the cooling line.

In an exemplary embodiment, the control valve is a solenoid valve, the cooling system further includes a first temperature sensor configured to detect a temperature of the compressor, the solenoid valve and the first temperature sensor are both electrically connected to the controller, and the controller is configured to control the solenoid valve to be opened or closed according to a detection result of the first temperature sensor.

In an exemplary embodiment, the cooling line is wound outside and in contact with the compressor.

In an exemplary embodiment, the cooling system further includes a heat radiating fan for radiating heat of the compressor.

In an exemplary embodiment, the cooling system further includes a radiator connected in the cooling line, and the radiator fan is configured to blow cold air generated at the radiator toward the compressor.

In an exemplary embodiment, the cooling system further includes a second temperature sensor for detecting a temperature of air around the compressor, the controller is configured to control the radiator fan to operate when the temperature detected by the first temperature sensor is higher than a first set value and the temperature detected by the second temperature sensor is lower than a second set value, and the control valve is closed; when the temperature detected by the first temperature sensor is higher than the first set value and the temperature detected by the second temperature sensor is not lower than the second set value, the controller controls the cooling fan to work, and the control valve is opened.

In an exemplary embodiment, further comprising a suction pipe and a first connection pipe;

the compressor is communicated with the condenser, the condenser is communicated with a throttle valve, the throttle valve is communicated with the evaporator through the first connecting pipe, and the evaporator is communicated with the compressor through the suction pipe to form the first circulation loop;

and the inlet and the outlet of the cooling pipeline are both arranged on the air suction pipe to be respectively connected with the evaporator and the compressor.

In an exemplary embodiment, the throttle valve is a capillary tube.

The embodiment of the application also provides a clothes dryer, which comprises the heat pump system, a drum and a second connecting pipe, wherein the drum is used for accommodating clothes;

the evaporator and the condenser, the condenser and the roller and the evaporator are communicated through the second connecting pipe to form a second circulation loop, and wind circulates in the second circulation loop;

and the air passing through the condenser enters the drum to dry the clothes.

Compared with some technologies, the method has the following beneficial effects:

the heat pump system that this application embodiment provided cools off the compressor through setting up the cooling pipeline, has improved the radiating effect of compressor, has avoided the compressor to open the condition because of opening repeatedly that leads to when the heat dissipation is bad, has reduced heat pump system's energy consumption, has improved heat pump system's work efficiency and compressor's life. In addition, the cooling pipeline directly adopts the original refrigerant in the heat pump system to cool the compressor, other cooling media do not need to be additionally added, and the cost of the heat pump system is reduced.

The clothes dryer provided by the embodiment of the application can dry clothes quickly, is reliable in work, can prevent the compressor from being repeatedly started and stopped, improves the use experience of users, and is low in energy consumption.

Drawings

Fig. 1 is a schematic structural diagram of a heat pump system according to a first embodiment of the present application;

fig. 2 is a first schematic structural diagram of a heat pump system according to a second embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a heat pump system according to a second embodiment of the present application;

fig. 4 is a schematic structural diagram of a heat pump system according to the second embodiment of the present application;

fig. 5 is a schematic structural diagram of a heat pump system according to the second embodiment of the present application;

FIG. 6 is a first schematic view of the suction duct according to the second embodiment of the present invention (not shown with cooling pipes);

FIG. 7 is a second schematic view of the structure of the suction pipe according to the second embodiment of the present application;

fig. 8 is a third schematic structural view of the suction pipe according to the second embodiment of the present application;

FIG. 9 is a schematic view of a partial structure of a clothes dryer according to a fifth embodiment of the present application;

FIG. 10 is a schematic view of a second partial structure of a clothes dryer according to a fifth embodiment of the present application;

fig. 11 is an enlarged view of the structure of portion a in fig. 10.

In the drawings, the components represented by the respective reference numerals are listed below:

1-evaporator, 2-compressor, 21-first temperature sensor, 3-condenser, 4-throttle valve, 5-first connecting pipe, 6-radiator fan, 7-suction pipe, 71-cooling pipeline, 711-control valve and 72-radiator.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

Example one

The embodiment of the application provides a heat pump system, as shown in fig. 1, the heat pump system comprises an evaporator 1, a compressor 2, a condenser 3, a throttle valve 4 and a cooling system, wherein the evaporator 1, the compressor 2, the condenser 3 and the throttle valve 4 are sequentially connected to form a first circulation loop, and a refrigerant flows in the first circulation loop; the cooling system includes a cooling line 71, and an inlet and an outlet of the cooling line 71 are connected to the evaporator 1 and the compressor 2, respectively, and cools the compressor 2 using a refrigerant flowing through the cooling line 71.

In a first circulation loop (i.e., a refrigeration circulation loop) of the heat pump system, a low-temperature low-pressure refrigerant (in a gas-liquid mixed state) absorbs heat through an evaporator 1 and then becomes a low-temperature low-pressure refrigerant (in a gas state), then becomes a high-temperature high-pressure refrigerant (in a gas state) through a compressor 2, releases heat through a condenser 3 to become a medium-temperature high-pressure refrigerant (in a liquid state), throttles through a throttle valve 4 and then becomes a low-temperature low-pressure refrigerant (in a gas-liquid mixed state), and the low-temperature low-pressure refrigerant (in a gas-liquid mixed state) enters the evaporator 1 again to continue circulation. The cooling pipeline 71 serves as a heat dissipation structure, and a part of low-temperature and low-pressure refrigerant (gas state) enters the cooling pipeline 71 and is used as a cooling medium to directly or indirectly absorb heat generated by the compressor 2 to cool the compressor 2, so that the heat dissipation effect of the compressor 2 is improved, the working reliability of the compressor 2 is improved, and the working efficiency of the heat pump system is further improved.

The cooling pipeline 71 is arranged to cool the compressor 2, so that the original radiating fan in the heat pump system can be eliminated, the cost and the energy consumption are reduced, the noise caused by the fan originally is reduced, and the space in the heat pump system is saved. In addition, the temperature of the low-temperature and low-pressure refrigerant (gas state) passing through the cooling pipeline 71 is increased, the superheat degree of the gas entering the compressor 2 is increased, the liquid impact phenomenon of the compressor 2 is prevented, and the service life of the compressor 2 is prolonged.

It should be understood that the inlet and outlet of the cooling circuit 71 may be directly connected to the evaporator 1 and the compressor 2 (i.e., the inlet of the cooling circuit 71 is directly connected to the evaporator 1 and the outlet of the cooling circuit 71 is directly connected to the compressor 2), and the inlet and outlet of the cooling circuit 71 may be connected to a circuit between the evaporator 1 and the compressor 2 to be connected to the evaporator 1 and the compressor 2, respectively (the inlet of the cooling circuit 71 is close to the evaporator 1 and the outlet of the cooling circuit 71 is close to the compressor 2).

The heat pump system that this application embodiment provided cools off compressor 2 through setting up cooling pipeline 71, has improved compressor 2's radiating effect, has avoided compressor 2 to open the condition because of opening repeatedly that leads to when the heat dissipation is bad, has reduced heat pump system's energy consumption, has improved heat pump system's work efficiency and compressor 2's life. In addition, the cooling pipeline 71 directly cools the compressor 2 by using the original refrigerant in the heat pump system, and other cooling media do not need to be additionally added, so that the cost of the heat pump system is reduced.

In an exemplary embodiment, as shown in fig. 1, the cooling system further includes a control valve 711 disposed on the cooling line 71, and the control valve 711 controls on/off of the cooling line 71.

The inlet end of the cooling line 71 is provided with a control valve 711 to control the on-off of the cooling line 71 as required. For example: when the heat pump system starts to work, the temperature of the compressor 2 is low, the cooling pipeline 71 does not need to be opened for cooling, and at the moment, the control valve 711 is closed; after the heat pump system works for a period of time, the temperature of the compressor 2 rises, the control valve 711 is opened, and the cooling pipeline 71 is started to cool and dissipate heat of the compressor 2, so that the compressor 2 is ensured to work reliably. The cooling line 71 can be selectively opened or closed by the control valve 711, which reduces the energy consumption of the heat pump system.

It should be understood that whether the control valve 711 is opened or not can be performed according to other practical situations, such as: the outside temperature of the heat pump system is low, the temperature of the compressor 2 is low in the whole working process, and the cooling pipeline 71 is not started at the moment; or, the external temperature of the heat pump system is high, and the cooling pipeline 71 can be opened to cool down when the compressor 2 starts to work, so as to ensure the cooling effect on the compressor 2.

In an exemplary embodiment, the control valve 711 is a solenoid valve, and the cooling system further includes a first temperature sensor 21 and a controller, the first temperature sensor 21 is configured to detect the temperature of the compressor 2, the solenoid valve and the first temperature sensor 21 are both electrically connected to the controller, and the controller is configured to control the solenoid valve to open or close according to the detection result of the first temperature sensor 21.

In an exemplary embodiment, the cooling line 71 is wound outside the compressor 2 and in contact with the compressor 2. Part of the refrigerant enters the cooling line 71 to cool the compressor 2.

The cooling pipeline 71 directly performs cooling and heat dissipation in a manner of contacting with the compressor 2, and the heat on the surface of the compressor 2 is taken away by using the low-temperature and low-pressure refrigerant (gas state) in the cooling pipeline 71 to perform cooling and heat dissipation on the compressor 2. The cooling line 71 may be helically wound around the outside of the compressor 2 for half a turn, one turn or more.

The cooling pipe 71 can be made of a material with good heat conductivity, such as: copper to improve the heat exchange effect of the refrigerant in the cooling line 71 and to improve the cooling effect on the compressor 2. Of course, the cooling pipe 71 may be made of other materials besides copper according to actual needs.

In an exemplary embodiment, as shown in fig. 1, the heat pump system further comprises a suction pipe 7 and a first connection pipe 5; the condenser 2 and the condenser 3, the condenser 3 and the throttle valve 4, and the throttle valve 4 and the evaporator 1 are communicated through a first connecting pipe 5, and the evaporator 1 and the compressor 2 are communicated through a suction pipe 7 to form a refrigeration cycle loop; an inlet and an outlet of the cooling line 71 are provided on the suction pipe 7 to be connected with the evaporator 1 and the compressor 2, respectively.

The evaporator 1, the compressor 2, the condenser 3 and the throttle valve 4 are sequentially communicated by the air suction pipe 7 and the first connecting pipe 5 to form a complete refrigeration cycle loop. Both the inlet and the outlet of the cooling line 71 are arranged on the suction duct 7, i.e. the cooling line 71 is connected in parallel with a part of the suction duct 7.

In practical operation, the cooling pipeline 71 can be integrally formed with the air suction pipe 7, so that the post-assembly process is reduced. Of course, the cooling line 71 and the air intake pipe 7 may be separately manufactured, a connection port is provided in the air intake pipe 7, and the cooling line 71 is attached to the air intake pipe 7 through the connection port to form an integral structure.

It should be understood that the specific shape of the suction pipe 7 can be set according to the needs of the heat pump system, and the application is not limited thereto.

In an exemplary embodiment, the throttle 4 comprises a capillary tube.

The throttle valve 4 may take the form of a capillary tube, which is arranged in a plurality of turns.

Example two

The embodiment of the present application provides a heat pump system, as shown in fig. 2 to 8, the main structure of which is the same as that of the first embodiment, and the difference between the two embodiments is mainly described herein. The main differences between the embodiment of the present application and the first embodiment are as follows: cooling line 71 cools compressor 2.

In an exemplary embodiment, as shown in fig. 2, the cooling system further includes a heat dissipation fan 6 for dissipating heat of the compressor 2. The cooling system further includes a radiator 72, the radiator 72 being connected in the cooling line 71, and the radiator fan 6 blowing cold air generated at the radiator 72 toward the compressor 2. The heat sink 72 may employ a heat sink.

When the ambient temperature in the heat pump system is high, the cooling effect of the cooling fan 6 is reduced, and the high-temperature wind blown by the cooling fan 6 cannot well cool the compressor 2. The cooling pipeline 71 is connected with a radiator 72, and the radiator 72 cools air at an inlet of the cooling fan 6, so that when the ambient temperature is high, the cooling fan 6 can still blow cold air with low temperature to the compressor 2, and the cooling effect on the compressor 2 is improved.

The cooling pipeline 71 reduces the temperature of inlet air of the cooling fan 6 through the radiator 72, so as to indirectly absorb heat generated by the compressor 2, and when the ambient temperature is low or high, the cooling pipeline has good cooling effect on the compressor 2, and ensures that the compressor 2 works reliably.

In an exemplary embodiment, the cooling system further includes a second temperature sensor for detecting the temperature of the air around the compressor 2 (ambient temperature), the controller is configured to control the radiator fan 6 to operate and the control valve 711 to close when the temperature detected by the first temperature sensor 21 is higher than a first set value and the temperature detected by the second temperature sensor is lower than a second set value; when the temperature detected by the first temperature sensor 21 is higher than the first set value and the temperature detected by the second temperature sensor is not lower than the second set value, the controller controls the operation of the heat dissipation fan 6 and the control valve 711 is opened.

It should be understood that the cooling fan 6 and the control valve 711 may be controlled using only the temperature detected by the first temperature sensor 21.

For example: when the temperature detected by the first temperature sensor 21 is higher than a first set value, the controller controls the operation of the heat dissipation fan 6 (the control valve 711 is closed) to cool the compressor 2, and when the temperature detected by the first temperature sensor 21 is not higher than the first set value (or lower than other set values), the controller controls the operation of the heat dissipation fan 6 to be stopped. Of course, when the temperature detected by the first temperature sensor 21 is higher than the first set value, the controller may also control the operation of the cooling fan 6 and the opening of the control valve 711 to cool the compressor 2 at the same time, and when the temperature detected by the first temperature sensor 21 is not higher than the first set value (or lower than other set values), the controller may control the operation of the cooling fan 6 and the closing of the control valve 711.

In the actual operation process, when the environmental temperature is low, only the cooling fan 6 can be started, and the cooling fan 6 can directly blow cold air with low temperature to cool the compressor 2; when the ambient temperature is higher, can open radiator fan 6 and cooling pipeline 71 simultaneously, during partial low temperature low pressure refrigerant (gaseous state) got into cooling pipeline 71, cooled down through radiator 72 to radiator fan 6's entry wind, and then guaranteed when the ambient temperature is higher, radiator fan 6 still can blow out the lower cold wind of temperature and cool down compressor 2, guarantees the cooling effect to compressor 2.

In the heat pump system provided by the embodiment of the application, the cooling pipeline 71 is connected with the radiator 72, and the radiator 72 cools the air at the fan inlet, so that the cooling fan 6 can still blow out cold air with lower temperature to the compressor 2 when the ambient temperature is higher, and the cooling effect on the compressor 2 is improved. The heat pump system provided by the embodiment of the application can adaptively solve the problem of poor heat dissipation of the compressor 2 caused by different environmental temperatures.

EXAMPLE III

The embodiment of the application provides a heat pump system, which comprises two structures that the cooling pipeline 71 in the first embodiment directly cools the compressor 2 and the cooling pipeline 71 in the second embodiment indirectly cools the compressor 2.

The cooling line 71 is wound outside the compressor 2 and in contact with the compressor 2, and a part of the refrigerant enters the cooling line 71 to cool the compressor 2. The heat pump system further includes a radiator 72, the radiator 72 being connected in the cooling line 71, a part of the refrigerant entering the radiator 72 through the cooling line 71 to cool the inlet air of the radiator fan 6; the heat pump system further includes a heat radiation fan 6, and an air outlet of the heat radiation fan 6 is disposed toward the compressor 2 to cool the compressor 2.

Namely: the cooling pipeline 71 is directly wound on the outer side of the compressor 2 to be in contact with the compressor 2 for heat exchange so as to cool the compressor 2; meanwhile, a radiator 72 is further provided in the cooling duct 71, and the radiator 72 cools air at the inlet of the radiator fan 6 so that the radiator fan 6 can blow cool air having a relatively low temperature toward the compressor 2.

This kind of dual cooling system that sets up in the embodiment of this application compares the traditional radiating mode that adopts single fan, both can reduce the energy consumption, can effectively improve the heat-sinking capability of unit interval when the accord with the condition again, if: when the temperature of the compressor 2 is high and the ambient temperature is low, only the cooling fan 6 or the cooling pipeline 71 can be started, so that the cooling effect is ensured and the energy consumption is reduced; when the temperature of the compressor 2 is high and the ambient temperature is high, the cooling fan 6 and the cooling pipeline 71 can be simultaneously started, the cooling pipeline 71 can directly radiate the compressor 2, the inlet air temperature of the cooling fan 6 can also be reduced through the radiator 72, the two cooling modes cooperate to improve the cooling effect of the cooling system on the compressor 2 under the condition that the ambient temperature is high, and the working reliability of the clothes dryer under the high-temperature environment is improved. In addition, two kinds of heat dissipation modes can also constitute dual heat dissipation guarantee, and when one of them heat radiation structure exists unusually, still can rely on another heat radiation structure to maintain the normal operating capability of compressor 2, the working life of extension equipment.

Example four

An embodiment of the present application provides a clothes dryer, which includes the heat pump system of the first embodiment, a drum configured to accommodate laundry, and a second connection pipe; the evaporator 1 and the condenser 3, the condenser 3 and the drum, and the drum and the evaporator 1 are communicated through a second connecting pipe to form a second circulation loop (hot air circulation loop) in which wind circulates; the air passing through the condenser 3 enters the drum to dry the laundry.

In a hot air circulation loop of the clothes dryer, low-temperature high-humidity circulating air passes through a condenser 3 to become high-temperature low-humidity air, passes through a roller to absorb water in clothes to become medium-temperature high-humidity air, passes through an evaporator 1 to be released and separated out to become low-temperature high-humidity air, enters the condenser 3, and continues to circulate. In the working process of the clothes dryer, if the sensor detects that the temperature of the compressor 2 is higher, the cooling pipeline 71 is started to cool the compressor 2, and the compressor 2 is ensured to be in a safe operation range.

The clothes dryer with the heat pump system can dry clothes quickly, is reliable in work, prevents the compressor 2 from being started and stopped repeatedly, improves the use experience of users, and is low in energy consumption. The cooling pipeline 71 is arranged to cool the compressor 2, an original cooling fan in a heat pump system is omitted, the cost and the energy consumption of the clothes dryer are reduced, and the space inside the clothes dryer is saved.

EXAMPLE five

An embodiment of the present application provides a clothes dryer, as shown in fig. 9 to 11, the clothes dryer includes a heat pump system, a drum and a second connection pipe in the second embodiment, the drum is configured to accommodate laundry; the evaporator 1 and the condenser 3, the condenser 3 and the roller and the evaporator 1 are communicated through second connecting pipes to form a hot air circulation loop; the condenser 3 blows dry air into the drum to dry the laundry.

In a hot air circulation loop of the clothes dryer, low-temperature high-humidity circulating air passes through a condenser 3 to become high-temperature low-humidity air, passes through a roller to absorb water in clothes to become medium-temperature high-humidity air, passes through an evaporator 1 to be released and separated out to become low-temperature high-humidity air, enters the condenser 3, and continues to circulate. In the working process of the clothes dryer, if the sensor detects that the temperature of the compressor 2 is higher, the cooling pipeline 71 (and the cooling fan 6) is started to cool the compressor 2, and the compressor 2 is ensured to be in a safe operation range.

The clothes dryer with the heat pump system can dry clothes quickly, is reliable in work, prevents the compressor 2 from being started and stopped repeatedly, improves the use experience of users, and is low in energy consumption.

The controller in the heat pump system controls the radiator fan 6 to be turned on or controls the radiator fan 6 and the control valve 711 to be turned on together according to the compressor temperature (the temperature detected by the first temperature sensor 21) or the combination of the compressor temperature (the temperature detected by the first temperature sensor 21) and the ambient temperature (the temperature detected by the second temperature sensor): when the ambient temperature is greater than or equal to t1 and the temperature of the compressor 2 is greater than t2, the control valve 711 and the cooling fan 6 are both opened to cool the compressor 2; when the temperature of the compressor 2 is less than t3, the control valve 711 and the radiator fan 6 are both closed; when the ambient temperature is lower than t1 and the temperature of the compressor 2 is higher than t2, the cooling fan 6 is turned on, the control valve 711 is turned off, and the cooling fan 6 cools the compressor 2; when the temperature of the compressor 2 is less than t3, the radiator fan 6 is turned off. Wherein t2 > t 3.

For example: when the ambient temperature is greater than or equal to 30 ℃ and the temperature of the compressor 2 is greater than 60 ℃, the control valve 711 and the cooling fan 6 are both opened to cool the compressor 2; when the temperature of the compressor 2 is less than 55 ℃, the control valve 711 and the cooling fan 6 are both closed; when the ambient temperature is lower than 30 ℃ and the temperature of the compressor 2 is higher than 60 ℃, the cooling fan 6 is started, the control valve 711 is closed, and the cooling fan 6 cools the compressor 2; when the temperature of the compressor 2 is less than 55 deg.c, the radiator fan 6 is turned off.

EXAMPLE six

The embodiment of the application provides a clothes dryer, which comprises the heat pump system, a drum and a second connecting pipe in the third embodiment, wherein the drum is used for accommodating clothes; the evaporator 1 and the condenser 3, the condenser 3 and the roller and the evaporator 1 are communicated through second connecting pipes to form a hot air circulation loop; the condenser 3 blows dry air into the drum to dry the laundry.

In a hot air circulation loop of the clothes dryer, low-temperature high-humidity circulating air passes through a condenser 3 to become high-temperature low-humidity air, passes through a roller to absorb water in clothes to become medium-temperature high-humidity air, passes through an evaporator 1 to be released and separated out to become low-temperature high-humidity air, enters the condenser 3, and continues to circulate. In the working process of the clothes dryer, if the sensor detects that the temperature of the compressor 2 is higher, the cooling pipeline 71 and/or the cooling fan 6 are/is started to cool the compressor 2, and the compressor 2 is ensured to be in a safe operation range.

In the description of the present application, it should be noted that the directions or positional relationships indicated by "upper", "lower", "left", "right", and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, and do not indicate or imply that the structures referred to have a specific direction, are configured and operated in a specific direction, and thus, cannot be understood as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "multiple turns" means at least two turns, e.g., two turns, three turns, etc., unless specifically defined otherwise.

In the description of the embodiments of the present application, unless expressly stated or limited otherwise, the terms "connected," "mounted," and "mounted" are to be construed broadly, e.g., the term "connected" may be a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The embodiments described herein are exemplary rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.

The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements that have been disclosed in this application may also be combined with any conventional features or elements to form unique aspects as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other aspects to form another unique aspect as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

Claims

1. A heat pump system is characterized by comprising an evaporator, a compressor, a condenser, a throttle valve and a cooling system, wherein the evaporator, the compressor, the condenser and the throttle valve are sequentially connected to form a first circulation loop, and a refrigerant flows in the first circulation loop;

2. The heat pump system of claim 1, wherein the cooling system further comprises a control valve disposed on the cooling line, the control valve controlling the cooling line to be on and off.

3. The heat pump system according to claim 2, wherein said control valve is a solenoid valve, said cooling system further comprises a first temperature sensor configured to detect a temperature of said compressor, and a controller configured to control opening or closing of said solenoid valve according to a detection result of said first temperature sensor, said solenoid valve and said first temperature sensor being electrically connected to said controller.

4. The heat pump system of claim 3, wherein the cooling line wraps outside of and in contact with the compressor.

5. The heat pump system of claim 3, wherein the cooling system further comprises a heat sink fan for dissipating heat from the compressor.

6. The heat pump system of claim 5, wherein the cooling system further comprises a radiator connected in the cooling line, the radiator fan being arranged to blow cold air generated at the radiator toward the compressor.

7. The heat pump system according to claim 6, wherein said cooling system further comprises a second temperature sensor for detecting a temperature of air around said compressor, said controller is configured to control said radiator fan to operate when a temperature detected by said first temperature sensor is higher than a first set value and a temperature detected by said second temperature sensor is lower than a second set value, said control valve is closed; when the temperature detected by the first temperature sensor is higher than the first set value and the temperature detected by the second temperature sensor is not lower than the second set value, the controller controls the cooling fan to work, and the control valve is opened.

8. The heat pump system of any one of claims 1 to 7, further comprising a suction pipe and a first connection pipe;

9. The heat pump system of any of claims 1-7, wherein the throttle valve is a capillary tube.

10. A clothes dryer comprising the heat pump system of any one of claims 1 to 9, a drum provided to accommodate laundry, and a second connection pipe;

and the air passing through the condenser enters the drum to dry the clothes.