Solar and air energy heat pump dryer

Abstract

The utility model discloses a space energy heat pump dryer which is characterized in that a first refrigerant is pressurized through a compressor, the high-temperature and high-pressure first refrigerant enters a condenser through a second pipeline, the first refrigerant is liquefied in the condenser to release heat, the low-temperature and liquid-state first refrigerant enters an evaporator, and under the action of an air discharging device, the first refrigerant is discharged into the evaporator. Air in the drying room flows out of the air outlet, heat released by the first refrigerant is brought into the drying room through the condenser, goods needing to be dried are heated and dewatered, high-temperature and high-humidity air in the drying room flows to the air inlet after being dewatered and cooled through the evaporator, the evaporator recycles heat, and the first refrigerant in the evaporator absorbs heat and is vaporized and then enters the compressor. By means of the characteristic that the evaporator absorbs heat and releases cold energy, the solar heat exchange system absorbs sunlight heat and exchanges heat with the evaporator, and the sunlight heat is conducted to the evaporator and then conducted to the drying room.

Description

Technical Field

[0001] The utility model relates to the technical field of drying machines, in particular to a space energy heat pump drying machine. Background Art

[0002] Heat pump dryers use the reverse Carnot principle to absorb heat from the surrounding environment and transfer it to the object being heated. Heat pump dryers specifically pressurize the refrigerant through a compressor, turning the refrigerant into a high-temperature and high-pressure gas. The high-temperature and high-pressure gas liquefies in the condenser, releasing heat, thereby increasing the temperature of the air in the drying room. However, existing heat pump dryers consume a lot of energy. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a space energy heat pump dryer, which can solve the problem of high energy consumption of the existing heat pump dryer.

[0004] The space energy heat pump dryer according to the first embodiment of the utility model comprises:

[0005] A drying room and a first pipeline, wherein the drying room is provided with an air inlet and an air outlet, and the air inlet and the air outlet are connected through the first pipeline;

[0006] an air exhaust device, the air exhaust device being installed on the first pipeline to drive the air in the drying room to flow from the air outlet along the first pipeline to the air inlet;

[0007] A heat pump system, the heat pump system comprising a compressor, a condenser, an evaporator and a second pipeline, the outlet of the compressor is connected to the inlet of the condenser through the second pipeline, the outlet of the condenser is connected to the inlet of the evaporator through the second pipeline, the outlet of the evaporator is connected to the inlet of the compressor through the second pipeline, the second pipeline is filled with a first refrigerant, the condenser is installed at the air inlet, and the evaporator is installed at the air outlet;

[0008] A solar heat exchange system, which is installed on the evaporator to absorb sunlight heat and exchange heat with the evaporator;

[0009] A temperature detection module, wherein the temperature detection module is used to detect the temperature of the evaporator;

[0010] A control module, the control module is electrically connected to the air exhaust device, the control module is electrically connected to the compressor, the control module is electrically connected to the solar heat exchange system, and the control module is electrically connected to the temperature detection module.

[0011] The space energy heat pump dryer according to the first embodiment of the utility model has at least the following beneficial effects:

[0012] The first refrigerant is pressurized by the compressor, and the high-temperature and high-pressure first refrigerant enters the condenser through the second pipeline. The first refrigerant is liquefied in the condenser to release heat, and the low-temperature liquid first refrigerant enters the evaporator. Under the action of the air exhaust device, the air in the drying room flows out from the air outlet, and the heat released by the first refrigerant is brought into the drying room through the condenser to heat and dehydrate the goods to be dried. The high-temperature and high-humidity air in the drying room flows to the air inlet after being dehydrated and cooled by the evaporator. The evaporator recovers heat, and the first refrigerant in the evaporator absorbs heat and vaporizes before entering the compressor. Utilizing the characteristic of the evaporator absorbing heat and releasing cold, the solar heat exchange system absorbs sunlight heat and exchanges heat with the evaporator, and conducts sunlight heat to the evaporator, and then conducts it to the drying room. Compared with the traditional heat pump dryer, the space energy heat pump dryer according to the first embodiment of the utility model utilizes air energy and solar energy to heat the drying room, reduces energy consumption, and is energy-saving and environmentally friendly.

[0013] According to some embodiments of the utility model, the solar heat exchange system includes a heat exchange tube, a main tube, a branch tube, a liquid collecting tube and a solenoid valve, one end of the heat exchange tube is connected to the main tube, the other end of the heat exchange tube is connected to the liquid collecting tube, one end of the branch tube is connected to the main tube, the other end of the branch tube is connected to the liquid collecting tube, the solenoid valve is installed on the liquid collecting tube, the control module is electrically connected to the solenoid valve, and the heat exchange tube is filled with a second refrigerant.

[0014] According to some embodiments of the present utility model, the branch pipe is arranged on the evaporator.

[0015] According to some embodiments of the present utility model, the solar heat exchange system further comprises a first one-way valve and a second one-way valve, wherein the first one-way valve is installed on the main pipe, and the second one-way valve is installed on the liquid collecting pipe.

[0016] According to some embodiments of the present invention, the heat pump system further includes an electronic expansion valve, and the electronic expansion valve is installed on the second pipeline.

[0017] According to some embodiments of the present utility model, the air exhaust device includes a first fan and a second fan, the first fan is installed at the air inlet, the second fan is installed at the air outlet, the control module is electrically connected to the first fan, and the control module is electrically connected to the second fan.

[0018] According to the second aspect of the present invention, a space energy heat pump dryer control method includes:

[0019] After receiving the start command, the air exhaust device and the compressor are controlled to work;

[0020] Detecting the evaporator temperature by a temperature detection module, and controlling the operation of the solar heat exchange system when it is detected that the evaporator temperature is lower than a first preset temperature;

[0021] When it is detected that the evaporator temperature is higher than a second preset temperature, the solar heat exchange system is controlled to stop operating.

[0022] The space energy heat pump dryer control method according to the second aspect of the present utility model has at least the following beneficial effects:

[0023] The first refrigerant is pressurized by the compressor, and the high-temperature and high-pressure first refrigerant enters the condenser through the second pipeline. The first refrigerant is liquefied in the condenser to release heat, and the low-temperature liquid first refrigerant enters the evaporator. Under the action of the air exhaust device, the air in the drying room flows out from the air outlet, and the heat released by the first refrigerant is brought into the drying room through the condenser to heat and dehydrate the goods to be dried. The high-temperature and high-humidity air in the drying room flows to the air inlet after being dehydrated and cooled by the evaporator. The evaporator recovers heat, and the first refrigerant in the evaporator absorbs heat and vaporizes before entering the compressor. Utilizing the characteristic of the evaporator absorbing heat and releasing cold, the solar heat exchange system absorbs sunlight heat and exchanges heat with the evaporator, and conducts sunlight heat to the evaporator, and then to the drying room. Compared with the traditional heat pump dryer control method, the space energy heat pump dryer control method according to the second aspect of the utility model utilizes air energy and solar energy to heat the drying room, reduces energy consumption, and is energy-saving and environmentally friendly.

[0024] According to some embodiments of the utility model, the control of the air exhaust device and the compressor to operate includes: detecting the temperature of the drying room by the temperature detection module, and when the temperature of the drying room is lower than the target temperature, controlling the air exhaust device and the compressor to operate.

[0025] According to the computer-readable storage medium of the third aspect of the present invention, a program executable by a processor is stored therein, and when the program executable by the processor is executed by the processor, it is used to implement the control method of the space energy heat pump dryer as described above.

[0026] The computer-readable storage medium according to the third aspect of the present utility model has at least the following beneficial effects:

[0027] The first refrigerant is pressurized by the compressor, and the high-temperature and high-pressure first refrigerant enters the condenser through the second pipeline. The first refrigerant is liquefied in the condenser to release heat, and the low-temperature liquid first refrigerant enters the evaporator. Under the action of the air exhaust device, the air in the drying room flows out from the air outlet, and the heat released by the first refrigerant is brought into the drying room through the condenser to heat and dehydrate the goods to be dried. The high-temperature and high-humidity air in the drying room is dehydrated and cooled by the evaporator and flows to the air inlet. The evaporator recovers heat, and the first refrigerant in the evaporator absorbs heat and vaporizes and enters the compressor. Using the characteristics of the evaporator absorbing heat and releasing cold, the solar heat exchange system absorbs sunlight heat and exchanges heat with the evaporator, and conducts sunlight heat to the evaporator, and then to the drying room.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0030] Figure 1 This is a functional block diagram of the space energy heat pump dryer of the utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the space energy heat pump dryer of the utility model;

[0032] Figure 3 It is a structural schematic diagram of the solar energy heat exchange system of the utility model;

[0033] Figure 4 The utility model is a flow chart of the space energy heat pump dryer control method.

[0034] Reference numerals:

[0035] Drying room 100, air inlet 110, air outlet 120, first pipeline 130,

[0036] The air exhaust device 200, the first fan 210, the second fan 220,

[0037] Heat pump system 300, compressor 310, condenser 320, evaporator 330, evaporator inlet 331, evaporator outlet 332, second pipeline 340, electronic expansion valve 350,

[0038] Solar heat exchange system 400, heat exchange pipe 410, main pipe 420, branch pipe 430, liquid collecting pipe 440, solenoid valve 450, first check valve 460, second check valve 470,

[0039] Temperature detection module 500,

[0040] Control module 600. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0044] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0045] like Figure 1 to Figure 2As shown, a space energy heat pump dryer according to an embodiment of the utility model includes: a drying room 100, a first pipeline 130, an air exhaust device 200, a heat pump system 300, a solar heat exchange system 400, a temperature detection module 500 and a control module 600. The drying room 100 is provided with an air inlet 110 and an air outlet 120, and the air inlet 110 and the air outlet 120 are connected through the first pipeline 130. The air exhaust device 200 is installed on the first pipeline 130 to drive the air in the drying room 100 to flow from the air outlet 120 along the first pipeline 130 to the air inlet 110. The heat pump system 300 includes a compressor 310, a condenser 320, an evaporator 330 and a second pipeline 340. The outlet of the compressor 310 is connected to the inlet of the condenser 320 through the second pipeline 340, and the outlet of the condenser 320 is connected to the inlet of the evaporator through the second pipeline 340. 331, the evaporator outlet 332 is connected to the inlet of the compressor 310 through the second pipeline 340, the second pipeline 340 is filled with a first refrigerant, the condenser 320 is installed at the air inlet 110, the evaporator 330 is installed at the air outlet 120, the solar heat exchange system 400 is installed on the evaporator 330 to absorb sunlight heat and exchange heat with the evaporator 330, the temperature detection module 500 includes a first temperature sensor and a second temperature sensor, the first temperature sensor is used to detect the temperature of the drying room 100, and the second temperature sensor is used to detect the temperature of the evaporator 330, the control module 600 is electrically connected to the air exhaust device 200, the control module 600 is electrically connected to the compressor 310, the control module 600 is electrically connected to the solar heat exchange system 400, the control module 600 is electrically connected to the first temperature sensor, and the control module 600 is electrically connected to the second temperature sensor.

[0046] The first refrigerant is pressurized by the compressor 310, and the high-temperature and high-pressure first refrigerant enters the condenser 320 through the second pipeline 340. The first refrigerant is liquefied in the condenser 320 to release heat, and the low-temperature liquid first refrigerant enters the evaporator 330. Under the action of the air exhaust device 200, the air in the drying room 100 flows out from the air outlet 120, and the heat released by the first refrigerant is brought into the drying room 100 through the condenser 320, and the goods to be dried are heated and dehydrated. The high-temperature and high-humidity air in the drying room 100 is dehydrated and cooled by the evaporator 330 and flows to the air inlet 110. The evaporator 330 recovers heat, and the first refrigerant in the evaporator 330 absorbs heat and vaporizes and enters the compressor 310, and the first refrigerant circulates again. Using the characteristics of the evaporator 330 absorbing heat and releasing cold, the solar heat exchange system 400 absorbs sunlight heat and exchanges heat with the evaporator 330, and conducts sunlight heat to the evaporator 330, and then to the drying room 100. Compared with the traditional heat pump dryer, the space energy heat pump dryer according to one embodiment of the present invention utilizes air energy and solar energy to heat the drying room 100, thereby reducing energy consumption and being energy-saving and environmentally friendly.

[0047] like Figure 3 As shown, the solar heat exchange system 400 includes a plurality of heat exchange tubes 410, a main tube 420, a plurality of branch tubes 430, a liquid collecting tube 440 and a solenoid valve 450. One end of the heat exchange tube 410 is connected to the main tube 420, and the other end of the heat exchange tube 410 is connected to the liquid collecting tube 440. The branch tube 430 is passed through the evaporator 330, and one end of the branch tube 430 is connected to the main tube 420, and the other end of the branch tube 430 is connected to the liquid collecting tube 440. The solenoid valve 450 is installed on the liquid collecting tube 440. The control module 600 is electrically connected to the solenoid valve 450. The heat exchange tube 410 is filled with a second refrigerant.

[0048] After the heat exchange tube 410 absorbs the heat of the sun, the second refrigerant in the heat exchange tube 410 absorbs heat and vaporizes. The gaseous second refrigerant enters the multiple branch pipes 430 through the main pipe 420, exchanges heat with the evaporator 330 through the multiple branch pipes 430, and the evaporator 330 releases cold energy. After the second refrigerant is liquefied, it flows back to the heat exchange tube 410 through the liquid collecting pipe. The second refrigerant increases the heat exchange area through the multiple branch pipes 430. Since the branch pipes 430 are arranged on the evaporator 330, the heat of the sun can be quickly transferred to the evaporator 330, and the heat exchange effect is good. The control module 600 controls the opening and closing state of the electromagnetic valve 450. When the electromagnetic valve 450 is closed, since the second refrigerant cannot circulate in the heat exchange tube 410, the main pipe 420, the branch pipe 430 and the liquid collecting pipe 440, the solar heat exchange system 400 stops running, and the solar heat exchange system 400 does not exchange heat with the evaporator 330. When the solenoid valve 450 is opened, the solar heat exchange system 400 operates and exchanges heat with the evaporator 330 .

[0049] like Figure 3 As shown, the solar heat exchange system 400 also includes a first one-way valve 460 and a second one-way valve 470. The first one-way valve 460 is installed on the main pipe 420, and the second one-way valve 470 is installed on the collecting pipe 440. The first one-way valve 460 and the second one-way valve 470 ensure the circulation direction of the second refrigerant in the heat exchange pipe 410, the main pipe 420, the branch pipe 430 and the collecting pipe 440 to avoid reverse flow.

[0050] like Figure 2 As shown, the heat pump system 300 also includes an electronic expansion valve 350, which is installed on the second pipeline 340 between the condenser 320 and the evaporator 330. The first refrigerant in the normal temperature and high pressure liquid state flowing out of the condenser 320 flows to the evaporator 330 through the second pipeline 340, during which the first refrigerant is reduced in pressure by the electronic expansion valve 350 and becomes a normal temperature and low pressure liquid state.

[0051] like Figure 2As shown, the air exhaust device 200 includes a first fan 210 and a second fan 220. The first fan 210 is installed at the air inlet 110, and the second fan 220 is installed at the air outlet 120. The control module 600 is electrically connected to the first fan 210, and the control module 600 is electrically connected to the second fan 220. The control module 600 controls the operation of the first fan 210 and the second fan 220. The first fan 210 drives the air in the first duct to pass through the condenser 320 and be discharged to the drying room 100. The second fan 220 drives the air in the drying room 100 to pass through the evaporator 330 and enter the first duct, so that the air in the drying room 100 circulates.

[0052] like Figure 4 As shown, a space energy heat pump dryer control method according to an embodiment of the present utility model includes but is not limited to step S100, step S200, and step S300.

[0053] Step S100: after receiving the start command, control the air exhaust device 200 and the compressor 310 to work;

[0054] In this step, after receiving the start command, the control module 600 controls the air exhaust device and the compressor 310 to work, the air exhaust device 200 drives the air in the drying room 100 to flow from the air outlet 120 to the air outlet, and the compressor 310 pressurizes the first refrigerant.

[0055] Step S200: Detecting the temperature of the evaporator 330 through the temperature detection module 500, and when it is detected that the temperature of the evaporator 330 is lower than the first preset temperature, controlling the solar heat exchange system 400 to operate;

[0056] In this step, the temperature detection module 500 detects the fin temperature of the evaporator 330 and feeds back the temperature data to the control module 600. When it is detected that the fin temperature of the evaporator 330 is lower than the first preset temperature, the control module 600 controls the solar heat exchange system 400 to operate, and the solar heat exchange system 400 conducts the sunlight heat to the evaporator 330. The first preset temperature is 10°C.

[0057] Step S300: When it is detected that the temperature of the evaporator 330 is higher than the second preset temperature, the solar heat exchange system 400 is controlled to stop running.

[0058] In this step, when the temperature detection module 500 detects that the fin temperature of the evaporator 330 is higher than the second preset temperature, the solar heat exchange system 400 is controlled to stop running. The second preset temperature is 20°C.

[0059] It is understandable that after the solar heat exchange system 400 stops running, the temperature detection module 500 detects the fin temperature of the evaporator 330 every ten minutes, so as to control the operation of the solar heat exchange system 400 when the fin temperature of the evaporator 330 is lower than the first preset temperature.

[0060] According to the control method of the space energy heat pump dryer of an embodiment of the utility model, the first refrigerant is pressurized by the compressor 310, and the high-temperature and high-pressure first refrigerant enters the condenser 320 through the second pipeline 340. The first refrigerant is liquefied in the condenser 320 to release heat, and the low-temperature liquid first refrigerant enters the evaporator 330. Under the action of the air exhaust device 200, the air in the drying room 100 flows out from the air outlet 120, and the heat released by the first refrigerant is brought into the drying room 100 through the condenser 320, and the goods to be dried are heated and dehydrated. The high-temperature and high-humidity air in the drying room 100 flows to the air inlet 110 after being dehydrated and cooled by the evaporator 330, and the evaporator 330 recovers heat. The first refrigerant in the evaporator 330 absorbs heat and vaporizes and enters the compressor 310. Using the characteristics of the evaporator 330 absorbing heat and releasing cold, the solar heat exchange system 400 absorbs sunlight heat and exchanges heat with the evaporator 330, and conducts sunlight heat to the evaporator 330, and then to the drying room 100. Compared with the traditional heat pump dryer control method, the space energy heat pump dryer control method according to one embodiment of the present invention utilizes air energy and solar energy to heat the drying room 100, thereby reducing energy consumption and being energy-saving and environmentally friendly.

[0061] According to an embodiment of the present invention, the step S100 of “controlling the operation of the air exhaust device 200 and the compressor 310 ” is further described. The step S100 includes the step S110 .

[0062] Step S110: The temperature of the drying room 100 is detected by the temperature detection module 500. When the temperature of the drying room 100 is lower than the target temperature, the air exhaust device 200 and the compressor 310 are controlled to work.

[0063] In this step, the temperature detection module 500 detects the temperature of the drying room 100 and feeds back the temperature data to the control module 600. When the temperature of the drying room 100 is lower than the target temperature, the control module 600 controls the air exhaust device 200 and the compressor 310 to operate so that the temperature of the drying room 100 is kept above the target temperature to ensure the drying effect.

[0064] It should be noted that the control module 600 first controls the air exhaust device 200 to work, and after the air exhaust device 200 works for 30 seconds, controls the compressor 310 to work, so as to ensure that the compressor 310 works under the condition of stable air circulation in the drying room 100.

[0065] like Figure 4As shown, according to an embodiment of the present utility model, step S400 is also included.

[0066] Step S400: After receiving the stop instruction, the compressor 310, the air delivery device 200 and the solar heat exchange system 400 are controlled to stop running.

[0067] In this step, after receiving the stop command, the control module 600 controls the compressor 310 to stop running, and controls the air exhaust device 200 to stop running 30 seconds after the compressor 310 stops running, and controls the solar heat exchange system 400 to stop running 30 seconds after the air exhaust device 200 stops running.

[0068] In addition, an embodiment of the utility model further discloses a computer-readable storage medium, in which a program executable by a processor is stored. When the program executable by the processor is executed by the processor, it is used to implement the above-mentioned space energy heat pump dryer control method.

[0069] The computer-readable storage medium of an embodiment of the utility model pressurizes the first refrigerant through the compressor 310, and the high-temperature and high-pressure first refrigerant enters the condenser 320 through the second pipeline 340. The first refrigerant liquefies in the condenser 320 and releases heat. The low-temperature liquid first refrigerant enters the evaporator 330. Under the action of the air exhaust device 200, the air in the drying room 100 flows out from the air outlet 120, and the heat released by the first refrigerant is brought into the drying room 100 through the condenser 320, and the goods to be dried are heated and dehydrated. The high-temperature and high-humidity air in the drying room 100 flows to the air inlet 110 after being dehydrated and cooled by the evaporator 330, and the evaporator 330 recovers heat. The first refrigerant in the evaporator 330 absorbs heat and vaporizes and enters the compressor 310. Using the characteristics of the evaporator 330 absorbing heat and releasing cold, the solar heat exchange system 400 absorbs sunlight heat and exchanges heat with the evaporator 330, and conducts sunlight heat to the evaporator 330, and then to the drying room 100.

[0070] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed method above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or may be implemented as hardware, or may be implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0071] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Space energy heat pump dryer, characterized in that: include: A drying room (100) and a first pipeline (130), wherein the drying room (100) is provided with an air inlet (110) and an air outlet (120), and the air inlet (110) and the air outlet (120) are connected via the first pipeline (130); an air exhaust device (200), the air exhaust device (200) being installed on the first pipeline (130) and used for driving the air in the drying room (100) to flow from the air outlet (120) along the first pipeline (130) to the air inlet (110); A heat pump system (300), the heat pump system (300) comprising a compressor (310), a condenser (320), an evaporator (330) and a second pipeline (340), the outlet of the compressor (310) being connected to the inlet of the condenser (320) via the second pipeline (340), the outlet of the condenser (320) being connected to the inlet (331) of the evaporator via the second pipeline (340), the outlet of the evaporator (332) being connected to the inlet of the compressor (310) via the second pipeline (340), the second pipeline (340) being filled with a first refrigerant, the condenser (320) being installed at the air inlet (110), and the evaporator (330) being installed at the air outlet (120); A solar heat exchange system (400), the solar heat exchange system (400) being installed on the evaporator (330) to absorb sunlight heat and exchange heat with the evaporator (330); A temperature detection module (500), the temperature detection module (500) being used to detect the temperature of the evaporator (330); A control module (600), the control module (600) is electrically connected to the air exhaust device (200), the control module (600) is electrically connected to the compressor (310), the control module (600) is electrically connected to the solar heat exchange system (400), and the control module (600) is electrically connected to the temperature detection module (500).

2. The space energy heat pump dryer according to claim 1, characterized in that: The solar heat exchange system (400) comprises a heat exchange tube (410), a main tube (420), a branch tube (430), a liquid collecting tube (440) and a solenoid valve (450); one end of the heat exchange tube (410) is connected to the main tube (420), the other end of the heat exchange tube (410) is connected to the liquid collecting tube (440); one end of the branch tube (430) is connected to the main tube (420), the other end of the branch tube (430) is connected to the liquid collecting tube (440); the solenoid valve (450) is installed on the liquid collecting tube (440); the control module (600) is electrically connected to the solenoid valve (450); and the heat exchange tube (410) is filled with a second refrigerant.

3. The space energy heat pump dryer according to claim 2, characterized in that: The branch pipe (430) is disposed on the evaporator (330).

4. The space energy heat pump dryer according to claim 2, characterized in that: The solar heat exchange system (400) further comprises a first one-way valve (460) and a second one-way valve (470), wherein the first one-way valve (460) is installed on the main pipe (420), and the second one-way valve (470) is installed on the liquid collecting pipe (440).

5. The space energy heat pump dryer according to claim 1, characterized in that: The heat pump system (300) further comprises an electronic expansion valve (350), wherein the electronic expansion valve (350) is installed on the second pipeline (340).

6. The space energy heat pump dryer according to claim 1, characterized in that: The air exhaust device (200) comprises a first fan (210) and a second fan (220), wherein the first fan (210) is installed at the air inlet (110), and the second fan (220) is installed at the air outlet (120), and the control module (600) is electrically connected to the first fan (210), and the control module (600) is electrically connected to the second fan (220).

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