Cross-season solar energy and ground source heat pump multi-energy complementary system

Abstract

The utility model relates to the technical field of air conditioning systems, in particular to a cross-season solar energy and ground source heat pump multi-energy complementary system. Comprising a solar heat collection unit, an air source heat pump unit (103), a plate heat exchanger (105), a ground source heat pump unit (106), an air conditioner terminal (107), a first water collector (108), a first water segregator (109), a second water collector (110), a second water segregator (111) and a control unit. According to the utility model, the solar photo-thermal technology, the shallow geothermal energy ground source heat pump technology and the soil heat storage technology are effectively fused together, and the soil can be well balanced in cold and heat, so that the stability and the safety of the ground source heat pump system are ensured, an effective heat energy storage space is provided for solar heating, and the service life of the ground source heat pump system is prolonged. The development of a solar heating technology is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning systems, and in particular to a multi-energy complementary system of solar energy and ground-source heat pumps across seasons. Background Art

[0002] Shallow geothermal energy refers to the constant temperature zone of 10-18℃ formed by the rock and soil space 15 to 200 meters underground, which, together with the thermal capacity and thermal conductivity of the rock and soil, becomes an ideal storage space for cold and hot energy. The ground source heat pump air conditioning system uses a heat pump to transfer heat or cold energy from the underground space to the indoor space of the building. In winter, heat is taken from the soil to heat the building; in summer, heat is discharged to the soil to cool the building, thereby solving the needs of building cooling and heating. However, the long-term operation of the ground source heat pump project will lead to an imbalance of soil heat and cold, thereby reducing the efficiency of the ground source heat pump system, and even leading to the consequence that the ground source heat pump system cannot operate normally. Solar energy is the best renewable energy that people have discovered today to control and utilize. Making full use of solar energy is an important way to protect the environment and resources today. Due to the instability and discontinuity of solar thermal energy, its use can only be limited to sunlight radiation, and the temperature is relatively low. In particular, solar hot water heating requires a large amount of storage space, which limits the large-scale promotion and application of solar thermal energy.

[0003] At present, the heat extracted from the underground soil by the ground-source heat pump system for winter heating is greater than the heat input into the underground for summer cooling. The underground temperature field shows a downward trend. After years of operation, the soil temperature will continue to drop, and the underground cold and heat will be unbalanced, so that the ground-source heat pump system cannot operate according to the original design parameters, and the operating efficiency will decrease. If there is a serious imbalance, it may even lead to the ground-source heat pump system not being able to operate normally. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and propose a multi-energy complementary system of cross-season solar energy and ground-source heat pump. The thermal energy of the renewable energy solar energy is used to supplement the thermal energy of the soil, so that the energy extracted from the underground soil and the energy input into the underground soil by the ground-source heat pump system are balanced, so that the ground-source heat pump can operate long-term and efficiently according to the design parameters, and at the same time, the problem of solar hot water storage space is solved. The multi-energy complementary system of cross-season solar energy and ground-source heat pump effectively integrates solar thermal technology, shallow geothermal energy ground-source heat pump technology and soil heat storage technology, which can well make the soil reach a cold and hot balance, thereby ensuring the stability and safety of the ground-source heat pump system, and also provides an effective heat storage space for solar heating, promoting the development of solar heating technology.

[0005] The utility model provides a multi-energy complementary system of solar energy and ground source heat pump across seasons, including a solar heat collection unit, an air source heat pump unit 103, a plate heat exchanger 105, a ground source heat pump unit 106, an air conditioning terminal 107, a first water collector 108, a first water distributor 109, a second water collector 110, a second water distributor 111, and a control unit;

[0006] The solar heat collection unit, the first water distributor 109, the plate heat exchanger 105 and the first water collector 108 are connected to form a first loop;

[0007] The plate heat exchanger 105 is connected to the air conditioning terminal 107 to form a second loop;

[0008] The ground source heat pump unit 106 is connected to the air conditioning terminal 107 to form a third loop;

[0009] The ground source heat pump unit 106, the second water distributor 111, and the second water collector 110 are sequentially connected to form a fourth loop;

[0010] The plate heat exchanger 105, the second water distributor 111, and the second water collector 110 are sequentially connected to form a fifth loop;

[0011] The solar heat collection unit, the first water distributor 109, the air conditioning terminal 107 and the first water collector 108 are sequentially connected to form a sixth loop;

[0012] The solar heat collection unit, the air source heat pump unit 103, the first water distributor 109, the plate heat exchanger 105 and the first water collector 108 are connected to form a seventh loop;

[0013] The solar heat collection unit, the air source heat pump unit 103, the first water distributor 109, the air conditioning terminal 107 and the first water collector 108 are sequentially connected to form an eighth loop;

[0014] The control unit is connected to each circuit.

[0015] Preferably, the first circuit is connected to the second circuit via a plate heat exchanger 105, and the first circuit is connected to the fifth circuit via a plate heat exchanger 105;

[0016] The seventh circuit is connected to the second circuit via a plate heat exchanger 105 , and the seventh circuit is connected to the fifth circuit via a plate heat exchanger 105 .

[0017] Preferably, the control unit includes a single chip microcomputer 603, a first temperature sensing detector 601 and a second temperature sensing detector 602.

[0018] The first temperature detector 601 is arranged on the first circuit and the sixth circuit, and the second temperature detector 602 is arranged on the fourth circuit and the fifth circuit. The first temperature detector 601 and the second temperature detector 602 are respectively connected to the single-chip computer 603, and the single-chip computer 603 is used to send an open or closed electrical signal to the valve and the water pump.

[0019] Preferably, the solar thermal collection unit includes a solar collector 101 and a heat storage tank 102, the solar collector is connected to the heat storage tank 102 via a sixth solar water supply pipe 413, the heat storage tank 102 is connected to the solar collector 101 via a first solar return pipe 401, a first water pump 201 is arranged on the first solar return pipe 401, and the heat storage tank 102 is respectively connected to the fifth solar return pipe 408 and the first solar water supply pipe 402.

[0020] Preferably, in the first circuit, the solar thermal collection unit and the first water distributor 109 are connected in sequence through the fifth solar water return pipe 408 and the fourth solar water return pipe 407, the fourth solar water return pipe 407 is provided with a first temperature detector 601, the fifth solar water return pipe 408 is provided with a second water pump 202, the first water distributor 109 and the plate heat exchanger are connected through the third solar water return pipe 406, the third solar water return pipe 406 is provided with a fourth valve 304, the plate heat exchanger 105 and the first water collector 108 are connected through the second solar water supply pipe 403, the second solar water supply pipe 403 is provided with a second valve 302, and the first water collector 108 is connected to the solar thermal collection unit through the first solar water supply pipe 402.

[0021] Preferably, the second circuit is formed by sequentially connecting the air conditioning terminal 107, the second ground source water return pipe 504, the second solar water return pipe 405, the third solar water return pipe 406, the plate heat exchanger 105, the second solar water supply pipe 403, the third solar water supply pipe 404, the second ground source water return pipe 503 and the air conditioning terminal 107, the second solar water return pipe 405 is provided with a third valve 303, the third solar water return pipe 406 is provided with a fourth valve 304, the third solar water supply pipe 404 is provided with a first valve 301, the second solar water supply pipe 403 is provided with a second valve 302, and the second ground source water supply pipe 504 is provided with a sixth water pump 206;

[0022] The third loop is formed by sequentially connecting the air conditioning terminal 107, the second ground source water supply pipe 504, the ground source heat pump unit 106, the second ground source water return pipe 503 and the air conditioning terminal 107.

[0023] Preferably, the fourth loop is formed by sequentially connecting the ground source heat pump unit 106, the first ground source return pipe 502, the second water distributor 111, the second water collector 110, the first ground source water supply pipe 501 and the ground source heat pump unit 106, the first ground source water supply pipe 501 is provided with a second temperature detector 602, and the first ground source return pipe 502 is provided with a fifth water pump 205;

[0024] The fifth circuit is formed by connecting the plate heat exchanger 105, the seventh solar water return pipe 412, the first ground source water return pipe 502, the second water distributor 111, the second water collector 110, the first ground source water supply pipe 501, the fifth solar water supply pipe 411, and the plate heat exchanger 105 in sequence, and the fourth water pump 204 is arranged on the seventh solar water return pipe 412.

[0025] Preferably, the sixth circuit is formed by connecting in sequence a solar thermal collection unit, a fifth solar water return pipe 408, a fourth solar water return pipe 407, a third solar water return pipe 406, a second solar water return pipe 405, a first water distributor 109, an air conditioning terminal 107, a second ground source water supply pipe 504, a third solar water supply pipe 404, a second solar water supply pipe 403, a first water collector 108, a first solar water supply pipe 402 and a solar thermal collection unit.

[0026] Preferably, the seventh circuit is formed by connecting a solar energy collection unit, an air source heat pump unit 103, a sixth solar energy return pipe 409, a first water distributor 109, a third solar energy return pipe 406, a plate heat exchanger 105, a second solar energy water supply pipe 403, a first water collector 108, a fourth solar energy water supply pipe 410 and an air source heat pump unit 103 in sequence, a third water pump 203 is arranged on the fourth solar energy water supply pipe 410, and an inverter 104 is arranged between the air source heat pump unit and the solar energy collection unit.

[0027] Preferably, the eighth circuit is formed by connecting a solar thermal collection unit, an air source heat pump unit 103, a sixth solar water return pipe 409, a first water distributor 109, a third solar water return pipe 406, a second solar water return pipe 405, a second ground source water return pipe 503, an air conditioning terminal 107, a second ground source water supply pipe 504, a third solar water supply pipe 404, a second solar water supply pipe 403, a first water collector 108, a fourth solar water supply pipe 410, and an air source heat pump unit 103 in sequence.

[0028] Compared with the prior art, the advantages of the present invention are:

[0029] In the utility model, the solar thermal collector unit and the ground source heat pump unit are two relatively independent systems, in which the medium involved in heat transfer is water that does not need to undergo phase change; the partition-type plate heat exchanger can realize the energy storage function of solar energy through heat exchange of water medium, so it is only necessary to turn on the circulating water pump and keep the circulating water flowing for heat exchange, and the energy consumption is very small. The photovoltaic and thermal integrated panel can make full use of solar energy resources to convert them into heat and electrical energy, of which the thermal energy can be directly used for heat storage, and the electrical energy can drive the air source heat pump unit to extract heat energy in the air that is higher than twice the electrical energy for heat storage, that is, using electrical energy as a driving force, it can efficiently drive the air source heat pump unit and efficiently extract heat energy from the air. The amount of this heat energy can reach twice the amount of electrical energy consumed. The extracted heat energy is then used in the heat storage process. Adding photovoltaic + air source heat pump units to the system can make full use of the sun's energy, and compared with simple photothermal conversion, the heat conversion of photovoltaic + air energy has a more stable heat output and higher efficiency. In summary, the utility model effectively integrates solar thermal technology, shallow geothermal energy ground source heat pump technology and soil heat storage technology, which can well achieve a cold and hot balance in the soil, thereby ensuring the stability and safety of the ground source heat pump system, and also provides an effective heat energy storage space for solar heating, promoting the development of solar heating technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the utility model's multi-energy complementary system of cross-season solar energy and ground-source heat pump;

[0031] Reference numerals:

[0032] 101. Solar thermal collector, 102. Thermal storage tank, 103. Air source heat pump unit, 104. Inverter, 105. Plate heat exchanger, 106. Ground source heat pump unit, 107. Air conditioning terminal, 108. First water collector, 109. First water distributor, 110. Second water collector, 111. Second water distributor, 201. First water pump, 202. Second water pump, 203. Third water pump, 204. Fourth water pump, 205. Fifth water pump, 206. Sixth water pump, 301. First valve, 302. Second valve, 303. Third valve, 304. Fourth valve, 401. First solar water return pipe, 402. First solar water supply pipe, 405 , the second solar water return pipe, 403, the second solar water supply pipe, 406, the third solar water return pipe, 404, the third solar water supply pipe, 407, the fourth solar water return pipe, 410, the fourth solar water supply pipe, 408, the fifth solar water return pipe, 411, the fifth solar water supply pipe, 409, the sixth solar water return pipe, 413 the sixth solar water supply pipe, 412, the seventh solar water return pipe, 501, the first ground source water supply pipe, 502, the first ground source water return pipe, 503, the second ground source water return pipe, 504, the second ground source water supply pipe 505, the buried pipe heat exchanger, 601, the first temperature detector, 602, the second temperature detector, 603, the single chip microcomputer. DETAILED DESCRIPTION

[0033] The technical solution of the utility model is described in detail below in conjunction with the embodiments and drawings.

[0034] The utility model provides a cross-season solar energy and ground source heat pump multi-energy complementary system, including a solar heat collection unit, an air source heat pump unit 103, a plate heat exchanger 105, a ground source heat pump unit 106, an air conditioning terminal 107, a first water collector 108, a first water distributor 109, a second water collector 110, a second water distributor 111, and a control unit; the solar heat collection unit, the first water distributor 109, the plate heat exchanger 105 and the first water collector 108 are connected to form a first loop; the plate heat exchanger 105 is connected to the air conditioning terminal 107 to form a second loop; the ground source heat pump unit 106 is connected to the air conditioning terminal 107 to form a third loop; the ground source heat pump unit 106, the second water distributor 111, and the second water collector 110 are sequentially connected to form a fourth loop; the plate heat exchanger 105, the second water distributor 111, and the second water collector 110 are sequentially connected to form a fifth loop; the solar heat collection unit, the first water distributor 109, the plate heat exchanger 105 and the first water collector 108 are connected to form a first loop; the plate heat exchanger 105 is connected to the air conditioning terminal 107 to form a second loop; the ground source heat pump unit 106, the second water distributor 111, and the second water collector 110 are sequentially connected to form a fourth loop; the plate heat exchanger 105, the second water distributor 111, and the second water collector 110 are sequentially connected to form a fifth loop; A water distributor 109, an air conditioning terminal 107 and a first water collector 108 are connected in sequence to form a sixth loop; the solar thermal collector unit, the air source heat pump unit 103, the first water distributor 109, the plate heat exchanger 105 and the first water collector 108 are connected to form a seventh loop; the solar thermal collector unit, the air source heat pump unit 103, the first water distributor 109, the air conditioning terminal 107 and the first water collector 108 are connected in sequence to form an eighth loop; the first loop is connected to the second loop through the plate heat exchanger 105, and the first loop is connected to the fifth loop through the plate heat exchanger 105; the seventh loop is connected to the second loop through the plate heat exchanger 105, and the seventh loop is connected to the fifth loop through the plate heat exchanger 105; a buried pipe heat exchanger 505 is connected between the second water collector 110 and the second water distributor 111, and valves and water pumps are provided in each loop, and the control unit is electrically connected to the valves and water pumps.

[0035] Among them, the solar collector is connected to the heat storage tank 102 through the sixth solar water supply pipe 413, and the heat storage tank 102 is connected to the solar collector 101 through the first solar return pipe 401. The first water pump 201 is arranged on the first solar return pipe 401. The heat storage tank 102 is respectively connected to the fifth solar return pipe 408 and the first solar water supply pipe 402, and the fifth solar return pipe 408 is connected to the fourth solar return pipe 407.

[0036] The ground source heat pump unit in this system can independently provide winter heating and summer cooling for the indoor air conditioning terminal. When the ground source heat pump unit works alone: ​​the operator turns on the fifth water pump 205, the sixth water pump 206, the heat pump unit 106, the first ground source water supply pipe 501, the air conditioning terminal 107 heat user, the second ground source return pipe 503, the second ground source water supply pipe 504, and the first ground source return pipe 502 to form a heating (cooling) loop. When the ground source heat pump unit is combined with the solar energy unit, its working method is as follows:

[0037] 1) During the winter heating period, the soil is used as a low-temperature heat source. The ground-source heat pump unit converts the low-level energy in the soil into high-level energy for heating at the air-conditioning terminal. The solar thermal collection unit and the ground-source heat pump unit simultaneously provide heating for the building.

[0038] When the temperature of solar hot water exceeds the water supply temperature of indoor building heating equipment, the temperature detector transmits a signal to the single chip microcomputer. After analysis, the single chip microcomputer opens the first valve 301, the second valve 302, the third valve 303, the fourth valve 304, the first water pump 201, the second water pump 202, the third water pump 203, the fifth water pump 205, and the sixth water pump 206 through a command electrical signal, and heat exchange is carried out between the solar thermal collection unit and the air conditioning terminal 107 through the plate heat exchanger 105. The specific pipelines are as follows: the fifth solar water supply pipe 411 and the seventh solar water return pipe 412 are arranged at the right end of the plate heat exchanger 105, the sixth solar water supply pipe 413 and the first solar water return pipe 401 are connected to the solar collector 101, the sixth solar water supply pipe 413, the first solar water return pipe 401 and the solar collector 101 form a loop, the third solar water return pipe 406 and the second solar water supply pipe 403 are arranged at the left end of the plate heat exchanger 105, the second solar water return pipe 405 and the third solar water supply pipe 404 are connected to the air conditioner terminal, the second ground source water return pipe 503, the second ground source water supply pipe 504 and the air conditioner terminal 107 form a loop. The solar water heater can be directly heated by converting the heat energy designed water supply temperature for heating the air conditioner terminal 107 through the plate heat exchanger 105.

[0039] When the solar hot water is lower than the water supply temperature of the building heating equipment but greater than the outlet water temperature of the ground source buried heat exchanger, the temperature detector transmits the signal to the single chip microcomputer. After information comparison, the single chip microcomputer closes the first valve 301 and the third valve 303 through the command electrical signal, and opens the second valve 302, the fourth valve 304, and the first water pump 201 at the same time. A loop is formed between the solar collector, the first solar return pipe 401, the first solar water supply pipe 402, the first water distributor 109, the first water collector 108, and the seventh solar return pipe 412. The solar collector inputs low-temperature water into the ground through the buried heat exchanger to compensate for the underground soil heat extracted by the ground source heat pump system for heating in the buried temperature field, and also provides an effective heat storage space for solar heating. The combination of solar energy and ground source heat pump expands the available temperature range, reduces the number of ground pipe heat exchangers, reduces the system investment on the energy side of the ground source heat pump, and improves the cost performance of the system. The scope of promotion in the northern region has been greatly expanded.

[0040] 2) In spring and summer after the winter heating season, the operator closes the first valve 301 and the third valve 303 through the command electrical signal of the single chip computer, and opens the second valve 302, the fourth valve 304, and the first water pump 201 at the same time, so that a loop is formed between the solar collector 101, the first solar return pipe 401, the first solar water supply pipe 402, the first water distributor 109, the first water collector 108, and the seventh solar return pipe 412, and the solar hot water is heated through the underground heat exchanger 505 in the winter heating peak load regulation area (the underground heat exchanger in this area is the part of the underground heat exchanger for summer cooling according to the winter heating load, and does not participate in the summer cooling to extract the soil cold), and the solar hot water in spring and summer is stored underground, so as to extract heat through the ground source heat pump system during winter heating. In order to achieve the cold and hot balance of the underground soil for many years, the underground heat exchanger 505 peak load regulation area can be allocated and stored in spring and summer solar heat in turn with other underground heat exchanger areas.

[0041] 3) When the peak cooling period in summer has passed and the air conditioner is not started in autumn, the operator sends a command electrical signal through the single chip microcomputer to open the second valve 302, the fourth valve 304, the first water pump 201, the second water pump 202, the third water pump 203, and the fourth water pump 204, and close the first valve 301 and the third valve 303. The specific pipelines are as follows: the fifth solar water supply pipe 411 and the seventh solar water return pipe 412 are set at the right end of the plate heat exchanger 105, the sixth solar water supply pipe 413 and the first solar water return pipe 401 are connected to the solar heat collection unit, and the sixth solar water supply pipe 413, the first solar water return pipe 401, The photovoltaic-thermal integrated panel (solar collector 101) forms a loop, the third solar water return pipe 406 and the second solar water supply pipe 403 are arranged at the left end of the plate heat exchanger 105, the third solar water return pipe 406 is connected to the second solar water return pipe 405, the third solar water return pipe 406 is connected to the first water distributor 109, the first water collector 108 is connected to the second solar water supply pipe 403, the plate heat exchanger 105, the third solar water return pipe 406, the fifth solar water supply pipe 411, the first water distributor 109, the first water collector 108, the third solar water supply pipe 404, and the seventh solar water return pipe 412 form a loop. The excess heat generated by solar hot water is allocated to the idle underground heat exchanger area to store heat energy, compensate for the lack of ground storage energy in winter, so as to achieve the energy balance throughout the year and the purpose of solar thermal storage technology.

[0042] The solar collector of the utility model is a photovoltaic-thermal integrated panel, which will utilize solar energy resources to convert them into heat energy and electrical energy, wherein the heat energy can be directly used for heat storage, and the electrical energy can be used as a driving force to efficiently drive the air source heat pump unit, and efficiently convert the heat energy in the air, so as to achieve heat energy extraction that is more than twice the electrical energy input, and then used in the heat storage system. The specific pipelines are: 1) the solar thermal collector unit, the air source heat pump unit 103, the sixth solar water return pipe 409, the first water distributor 109, the third solar water return pipe 406, the plate heat exchanger 105, the second solar water supply pipe 403, the first water collector 108, the fourth solar water supply pipe 410 and the air source heat pump unit 103 are connected in sequence to form a pipeline, the third water pump 203 is arranged on the fourth solar water supply pipe 410, and an inverter is arranged between the air source heat pump unit and the solar thermal collector unit. 2) A pipeline is formed by connecting the solar thermal collection unit, the air source heat pump unit 103, the sixth solar water return pipe 409, the first water distributor 109, the third solar water return pipe 406, the second solar water return pipe 405, the second ground source water return pipe 503, the air conditioning terminal 107, the second ground source water supply pipe 504, the third solar water supply pipe 404, the second solar water supply pipe 403, the first water collector 108, the fourth solar water supply pipe 410, and the air source heat pump unit 103 in sequence.

[0043] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all fall within the protection scope of the present invention.

[0044] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of the present utility model will not be described separately.

[0045] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

[0046] Any content not described in detail in the present invention can be based on the conventional technical knowledge in the field.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the embodiments, a person skilled in the art should understand that any modification or equivalent replacement of the technical solution of the utility model does not deviate from the spirit and scope of the technical solution of the utility model, and should be included in the scope of the claims of the utility model.

Claims

1. A multi-energy complementary system of cross-season solar energy and ground source heat pump, characterized in that: It comprises a solar heat collection unit, an air source heat pump unit (103), a plate heat exchanger (105), a ground source heat pump unit (106), an air conditioning terminal (107), a first water collector (108), a first water distributor (109), a second water collector (110), a second water distributor (111) and a control unit; The solar heat collection unit, the first water distributor (109), the plate heat exchanger (105) and the first water collector (108) are connected to form a first loop; The plate heat exchanger (105) is connected to the air conditioning terminal (107) to form a second loop; The ground source heat pump unit (106) is connected to the air conditioning terminal (107) to form a third loop; The ground source heat pump unit (106), the second water distributor (111), and the second water collector (110) are connected in sequence to form a fourth loop; The plate heat exchanger (105), the second water distributor (111), and the second water collector (110) are sequentially connected to form a fifth loop; The solar heat collection unit, the first water distributor (109), the air conditioning terminal (107) and the first water collector (108) are connected in sequence to form a sixth loop; The solar heat collection unit, the air source heat pump unit (103), the first water distributor (109), the plate heat exchanger (105) and the first water collector (108) are connected to form a seventh loop; The solar heat collection unit, the air source heat pump unit (103), the first water distributor (109), the air conditioning terminal (107) and the first water collector (108) are connected in sequence to form an eighth loop; The control unit is connected to each circuit.

2. The multi-energy complementary system of cross-season solar energy and ground source heat pump according to claim 1 is characterized in that: The first circuit is connected to the second circuit via a plate heat exchanger (105), and the first circuit is connected to the fifth circuit via a plate heat exchanger (105); The seventh circuit is connected to the second circuit via a plate heat exchanger (105), and the seventh circuit is connected to the fifth circuit via a plate heat exchanger (105).

3. The multi-energy complementary system of cross-season solar energy and ground source heat pump according to claim 1 is characterized in that: The control unit comprises a single chip microcomputer (603), a first temperature sensing detector (601) and a second temperature sensing detector (602). The first temperature detector (601) is arranged on the first circuit and the sixth circuit, and the second temperature detector (602) is arranged on the fourth circuit and the fifth circuit. The first temperature detector (601) and the second temperature detector (602) are respectively connected to a single-chip computer (603), and the single-chip computer (603) is used to send an opening or closing electrical signal to the valve and the water pump.

4. The multi-energy complementary system of cross-season solar energy and ground source heat pump according to claim 1 is characterized in that: The solar thermal collection unit comprises a solar thermal collector (101) and a heat storage tank (102); the solar thermal collector is connected to the heat storage tank (102) via a sixth solar water supply pipe (413); the heat storage tank (102) is connected to the solar thermal collector (101) via a first solar water return pipe (401); a first water pump (201) is arranged on the first solar water return pipe (401); and the heat storage tank (102) is respectively connected to a fifth solar water return pipe (408) and a first solar water supply pipe (402).

5. The cross-season solar energy and ground source heat pump multi-energy complementary system according to claim 1 is characterized in that: In the first loop, the solar thermal collection unit and the first water distributor (109) are connected in sequence through the fifth solar water return pipe (408) and the fourth solar water return pipe (407); the fourth solar water return pipe (407) is provided with a first temperature sensor (601); the fifth solar water return pipe (408) is provided with a second water pump (202); the first water distributor (109) and the plate heat exchanger (105) are connected through the third solar water return pipe (406); the third solar water return pipe (406) is provided with a fourth valve (304); the plate heat exchanger (105) and the first water collector (108) are connected through the second solar water supply pipe (403); the second solar water supply pipe (403) is provided with a second valve (302); and the first water collector (108) and the solar thermal collection unit are connected through the first solar water supply pipe (402).

6. The multi-energy complementary system of cross-season solar energy and ground source heat pump according to claim 1 is characterized in that: The second loop is formed by sequentially connecting the air conditioning terminal (107), the second ground source water supply pipe (504), the second solar water return pipe (405), the third solar water return pipe (406), the plate heat exchanger (105), the second solar water supply pipe (403), the third solar water supply pipe (404), the second ground source water return pipe (503) and the air conditioning terminal (107); the second solar water return pipe (405) is provided with a third valve (303); the third solar water return pipe (406) is provided with a fourth valve (304); the third solar water supply pipe (404) is provided with a first valve (301); the second solar water supply pipe (403) is provided with a second valve (302); and the second ground source water supply pipe (504) is provided with a sixth water pump (206); The third loop is formed by sequentially connecting the air conditioning terminal (107), the second ground source water supply pipe (504), the ground source heat pump unit (106), the second ground source water return pipe (503) and the air conditioning terminal (107).

7. The multi-energy complementary system of cross-season solar energy and ground source heat pump according to claim 1 is characterized in that: The fourth loop is formed by sequentially connecting a ground source heat pump unit (106), a first ground source water return pipe (502), a second water distributor (111), a second water collector (110), a first ground source water supply pipe (501), and a ground source heat pump unit (106); a second temperature sensor (602) is provided on the first ground source water supply pipe (501); and a fifth water pump (205) is provided on the first ground source water return pipe (502); The fifth loop is formed by sequentially connecting a plate heat exchanger (105), a seventh solar water return pipe (412), a first ground source water return pipe (502), a second water distributor (111), a second water collector (110), a first ground source water supply pipe (501), a fifth solar water supply pipe (411) and a plate heat exchanger (105), and a fourth water pump (204) is provided on the seventh solar water return pipe (412).

8. The multi-energy complementary system of cross-season solar energy and ground source heat pump according to claim 1 is characterized in that: The sixth loop is formed by sequentially connecting a solar thermal collection unit, a fifth solar water return pipe (408), a fourth solar water return pipe (407), a third solar water return pipe (406), a second solar water return pipe (405), a first water distributor (109), an air conditioning terminal (107), a second ground source water supply pipe (504), a third solar water supply pipe (404), a second solar water supply pipe (403), a first water collector (108), a first solar water supply pipe (402) and a solar thermal collection unit.

9. The multi-energy complementary system of cross-season solar energy and ground source heat pump according to claim 1 is characterized in that: The seventh circuit is formed by sequentially connecting a solar energy collection unit, an air source heat pump unit (103), a sixth solar energy return pipe (409), a first water distributor (109), a third solar energy return pipe (406), a plate heat exchanger (105), a second solar energy water supply pipe (403), a first water collector (108), a fourth solar energy water supply pipe (410) and an air source heat pump unit (103); a third water pump (203) is arranged on the fourth solar energy water supply pipe (410); and an inverter (104) is arranged between the air source heat pump unit and the solar energy collection unit.

10. The multi-energy complementary system of cross-season solar energy and ground source heat pump according to claim 1 is characterized in that: The eighth loop is formed by sequentially connecting a solar thermal collection unit, an air source heat pump unit (103), a sixth solar water return pipe (409), a first water distributor (109), a third solar water return pipe (406), a second solar water return pipe (405), a second ground source water return pipe (503), an air conditioning terminal (107), a second ground source water supply pipe (504), a third solar water supply pipe (404), a second solar water supply pipe (403), a first water collector (108), a fourth solar water supply pipe (410), and an air source heat pump unit (103).

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