Geothermal energy air-conditioning system suitable for vegetable greenhouse

Abstract

The utility model discloses a geothermal energy air-conditioning system suitable for a vegetable greenhouse, relates to the technical field of geothermal energy, and aims to solve the problem that the energy consumption required by the growth temperature control of vegetables in the traditional greenhouse is large, and the geothermal energy air-conditioning system comprises a terrestrial heat collection system and a vegetable greenhouse air-conditioning system, and the output end of the terrestrial heat collection system is connected with a first valve group; the output end of the first valve set is connected with a heat pump unit system, the output end of the heat pump unit system is connected with a second valve set, the vegetable greenhouse air conditioning system is connected between the first valve set and the second valve set, and the second valve set is connected with the geothermal energy collecting system. According to the system, the temperature of the vegetable greenhouse can be controlled accurately, the consumption of primary energy is reduced, the operating cost can be greatly reduced, the refrigerating / heating dual functions of the vegetable greenhouse can be realized, and the temperature of the vegetable greenhouse can be controlled accurately by arranging a DCS control system.

Description

Technical Field

[0001] The utility model relates to the technical field of geothermal energy, in particular to a geothermal energy air conditioning system suitable for a vegetable greenhouse. Background Art

[0002] Facility agriculture can improve the overall income level of agricultural production. It is a high-input, high-productivity, high-efficiency production method with anti-seasonality and diversity. In the field of facility agriculture, greenhouses are set up to provide vegetables with the temperature, light, water, soil, and gas conditions required for their growth, so that vegetables can grow without being affected by seasons and the external environment.

[0003] Among them, temperature conditions are necessary conditions to ensure the normal growth of vegetables. However, first, the optimum temperatures required for vegetable growth during the day and at night are different. Second, the outdoor temperatures are different in summer and winter. In summer, the vegetable greenhouse absorbs heat from outside the greenhouse, and in winter, the vegetable greenhouse dissipates heat to the outside. In order to maintain a relatively constant temperature in the greenhouse, the greenhouse needs to be cooled by air conditioning in summer and heated in winter.

[0004] Specifically: during the summer daytime, the high temperature outside the greenhouse and the strong light will cause the temperature inside the greenhouse to rise, even exceeding the optimum temperature for vegetable growth during the day and being detrimental to vegetable growth. Therefore, in order to facilitate vegetable growth, in addition to partially shading the greenhouse roof during the day, the greenhouse must also be provided with air conditioning and cooling during the day to cool down the temperature inside the greenhouse; during the summer nights, although there is no light to cause the greenhouse temperature to rise, the surface temperature and the external air temperature may cause the temperature inside the greenhouse to be higher than the optimum temperature for vegetables at night, so the greenhouse also needs to be properly air-conditioned and cooled at this time.

[0005] Specifically: In winter, due to the low outside temperature, air conditioning and heating are needed according to the temperature conditions in the greenhouse to ensure the optimal temperature of vegetables during the day and at night.

[0006] In order to control the temperature of the greenhouse, the industry currently generally uses electricity and gas, and installs electric heaters, electric boilers or refrigeration units for heating or air conditioning for cooling. From the above situation, it can be seen that the energy consumption for temperature control in the greenhouse is huge.

[0007] Therefore, the utility model patent is a geothermal energy air conditioning system suitable for vegetable greenhouses, which uses geothermal energy to provide temperature control for vegetable greenhouses, reduces the consumption of electricity and gas, and achieves the purpose of energy conservation, emission reduction and improved economic benefits. Utility Model Content

[0008] In view of the deficiencies in the prior art, the utility model provides a geothermal energy air-conditioning system suitable for vegetable greenhouses, which solves the technical problem that the existing greenhouses use electricity and gas, and are equipped with electric heaters, electric boilers or refrigeration units for heating or air-conditioning, resulting in huge energy consumption.

[0009] To achieve the above objectives, the utility model is implemented through the following technical solutions: a geothermal energy air-conditioning system suitable for vegetable greenhouses, including a geothermal collection system and a vegetable greenhouse air-conditioning system, the output end of the geothermal collection system is connected to a first valve group, the output end of the first valve group is connected to a heat pump unit system, the output end of the heat pump unit system is connected to a second valve group, the vegetable greenhouse air-conditioning system is connected between the first valve group and the second valve group, the second valve group is connected to the geothermal collection system, the first valve group includes a first solenoid valve, a second solenoid valve, a fifth solenoid valve and a sixth solenoid valve, the second solenoid valve and the fifth solenoid valve are connected in series, the first solenoid valve and the sixth solenoid valve are connected in series, the second solenoid valve and the fifth solenoid valve are connected in parallel with the first solenoid valve and the sixth solenoid valve, the aggregation port of the second solenoid valve and the fifth solenoid valve is connected to the heat pump unit system, the first The aggregation port of the solenoid valve and the sixth solenoid valve is connected to the heat pump unit system, the aggregation port of the fifth solenoid valve and the sixth solenoid valve is connected to the geothermal collection system, the aggregation port of the first solenoid valve and the second solenoid valve is connected to the vegetable greenhouse air-conditioning system, the second valve group includes a third solenoid valve, a fourth solenoid valve, a seventh solenoid valve and an eighth solenoid valve, the third solenoid valve and the eighth solenoid valve are connected in series, the fourth solenoid valve and the seventh solenoid valve are connected in series, the third solenoid valve and the eighth solenoid valve are connected in parallel with the fourth solenoid valve and the seventh solenoid valve, the aggregation port of the third solenoid valve and the eighth solenoid valve is connected to the heat pump unit system, the aggregation port of the fourth solenoid valve and the seventh solenoid valve is connected to the heat pump unit system, the aggregation port of the seventh solenoid valve and the eighth solenoid valve is connected to the geothermal collection system, and the aggregation port of the third solenoid valve and the fourth solenoid valve is connected to the vegetable greenhouse air-conditioning system.

[0010] Preferably, the geothermal collection system includes a geothermal well, in which a buried pipe is installed, the input end of the buried pipe is connected to a geothermal water return pipeline, the geothermal water return pipeline is connected to the aggregation port of the seventh solenoid valve and the eighth solenoid valve, the output end of the buried pipe is connected to a buried pipe collector, one side of the buried pipe collector is connected to a geothermal water supply pipeline, one side of the geothermal water supply pipeline is connected to a geothermal water circulation pump, and the geothermal water circulation pump is connected to the aggregation port of the fifth solenoid valve and the sixth solenoid valve.

[0011] Preferably, the heat pump unit system includes a heat pump unit, and the heat pump unit includes an evaporator and a condenser, the evaporator is located on one side of the condenser, and a PLC controller is installed on the other side of the evaporator, the input end of the evaporator is connected to an evaporator inlet pipeline, and the evaporator inlet pipeline is connected to the aggregation port of the first solenoid valve and the sixth solenoid valve, the output end of the evaporator is connected to an evaporator outlet pipeline, and the evaporator outlet pipeline is connected to the aggregation port of the third solenoid valve and the eighth solenoid valve, the input end of the condenser is connected to a condenser inlet pipeline, and the condenser inlet pipeline is connected to the aggregation port of the second solenoid valve and the fifth solenoid valve, and the output end of the condenser is connected to a condenser outlet pipeline, and the condenser outlet pipeline is connected to the aggregation port of the fourth solenoid valve and the seventh solenoid valve.

[0012] Preferably, the vegetable greenhouse air-conditioning system includes a greenhouse air-conditioning terminal, the input end of the greenhouse air-conditioning terminal is connected to the summary port of the third solenoid valve and the fourth solenoid valve, the output end of the greenhouse air-conditioning terminal is connected to a return pipe, the return pipe is connected to an air-conditioning water circulation pump, and the air-conditioning water circulation pump is connected to the summary port of the first solenoid valve and the second solenoid valve.

[0013] Preferably, it also includes a DCS control system, the DCS control system includes a DCS master station, the DCS master station is connected to a DCS master station signal input cable, the DCS master station signal input cable is connected to an indoor remote thermometer, and the DCS master station is connected to a plurality of DCS master station signal output cables.

[0014] Preferably, several of the DCS master station signal output cables are respectively connected to the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve, the sixth solenoid valve, the seventh solenoid valve, the eighth solenoid valve, the geothermal water circulation pump, the PLC controller and the air conditioning water circulation pump.

[0015] Beneficial Effects

[0016] The utility model provides a geothermal energy air conditioning system suitable for vegetable greenhouses, which solves the technical problem that the existing greenhouses use electricity and gas, and are equipped with electric heaters, electric boilers or refrigeration units for heating or air conditioning, resulting in huge energy consumption. The utility model has the following advantages:

[0017] 1. Since the energy consumption required for temperature control of traditional greenhouse vegetable growth is relatively high, the use of geothermal energy can reduce the consumption of primary energy and greatly reduce the operating costs of greenhouses.

[0018] 2. This patent discloses a geothermal air conditioning system suitable for vegetable greenhouses, which can realize the dual functions of cooling and heating for greenhouse vegetable greenhouses.

[0019] 3. A geothermal air conditioning system suitable for vegetable greenhouses. By setting up a DCS control system, the temperature of the vegetable greenhouse can be accurately controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a geothermal energy air conditioning system suitable for a vegetable greenhouse according to the utility model.

[0021] In the figure: 100 - geothermal collection system; 101 - buried pipe water distributor; 102 - geothermal well; 103 - buried pipe; 104 - buried pipe water collector; 105 - geothermal water supply pipeline; 105a - geothermal water circulation pump; 106 - geothermal water return pipeline;

[0022] 200-heat pump system; 201-heat pump unit; 201a-evaporator; 201b-condenser; 201c-PLC controller; 202-evaporator inlet pipeline; 203-evaporator outlet pipeline; 204-condenser inlet pipeline; 205-condenser outlet pipeline;

[0023] 300-vegetable greenhouse air conditioning system; 301-water supply pipeline; 302-greenhouse air conditioning terminal; 303-return pipeline; 303a-air conditioning water circulation pump;

[0024] 400-DCS control system; 401-DCS master station; 402-indoor remote thermometer; 403-DCS master station signal input cable; 404-DCS master station signal output cable;

[0025] 1-first solenoid valve; 2-second solenoid valve; 3-third solenoid valve; 4-fourth solenoid valve; 5-fifth solenoid valve; 6-sixth solenoid valve; 7-seventh solenoid valve; 8-eighth solenoid valve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1The utility model provides a technical solution: a geothermal energy air conditioning system suitable for a vegetable greenhouse, comprising a geothermal collection system 100 and a vegetable greenhouse air conditioning system 300, wherein the output end of the geothermal collection system 100 is connected to a first valve group, the output end of the first valve group is connected to a heat pump unit system 200, the output end of the heat pump unit system 200 is connected to a second valve group, the vegetable greenhouse air conditioning system 300 is connected between the first valve group and the second valve group, the second valve group is connected to the geothermal collection system 100, the first valve group comprises a first solenoid valve 1, a second solenoid valve 2, a fifth solenoid valve 5 and a sixth solenoid valve 6, the second solenoid valve 2 and the fifth solenoid valve 5 are connected in series, the first solenoid valve 1 and the sixth solenoid valve 6 are connected in series, the second solenoid valve 2 and the fifth solenoid valve 5 are connected in parallel with the first solenoid valve 1 and the sixth solenoid valve 6, the aggregation port of the second solenoid valve 2 and the fifth solenoid valve 5 is connected to the heat pump unit system 200, the first solenoid valve 1 and the sixth solenoid valve 6 are connected in series, 6 is connected to the heat pump unit system 200, the summary port of the fifth solenoid valve 5 and the sixth solenoid valve 6 is connected to the geothermal collection system 100, the summary port of the first solenoid valve 1 and the second solenoid valve 2 is connected to the vegetable greenhouse air-conditioning system 300, the second valve group includes a third solenoid valve 3, a fourth solenoid valve 4, a seventh solenoid valve 7 and an eighth solenoid valve 8, the third solenoid valve 3 and the eighth solenoid valve 8 are connected in series, the fourth solenoid valve 4 and the seventh solenoid valve 7 are connected in series, the third solenoid valve 3 and the eighth solenoid valve 8 are connected in parallel with the fourth solenoid valve 4 and the seventh solenoid valve 7, the summary port of the third solenoid valve 3 and the eighth solenoid valve 8 is connected to the heat pump unit system 200, the summary port of the fourth solenoid valve 4 and the seventh solenoid valve 7 is connected to the heat pump unit system 200, the summary port of the seventh solenoid valve 7 and the eighth solenoid valve 8 is connected to the geothermal collection system 100, and the summary port of the third solenoid valve 3 and the fourth solenoid valve 4 is connected to the vegetable greenhouse air-conditioning system 300.

[0028] This embodiment is further configured as follows: the geothermal collection system 100 includes a geothermal well 102, a buried pipe 103 is installed in the geothermal well 102, the input end of the buried pipe 103 is connected to a geothermal water return pipeline 106, the geothermal water return pipeline 106 is connected to the aggregation port of the seventh solenoid valve 7 and the eighth solenoid valve 8, the output end of the buried pipe 103 is connected to a buried pipe collector 104, one side of the buried pipe collector 104 is connected to a geothermal water supply pipeline 105, one side of the geothermal water supply pipeline 105 is connected to a geothermal water circulation pump 105a, and the geothermal water circulation pump 105a is connected to the aggregation port of the fifth solenoid valve 5 and the sixth solenoid valve 6.

[0029] This embodiment is further configured as follows: the heat pump system 200 includes a heat pump unit 201, the heat pump unit 201 includes an evaporator 201a and a condenser 201b, the evaporator 201a is located on one side of the condenser 201b, and a PLC controller 201c is provided on the other side of the evaporator 201a. The input end of the evaporator 201a is connected to an evaporator inlet pipeline 202, and the evaporator inlet pipeline 202 is connected to the aggregation port of the first solenoid valve 1 and the sixth solenoid valve 6. The output of the evaporator 201a The first end of the condenser 201b is connected to an evaporator outlet pipeline 203, and the evaporator outlet pipeline 203 is connected to the summary port of the third solenoid valve 3 and the eighth solenoid valve 8. The input end of the condenser 201b is connected to a condenser inlet pipeline 204, and the condenser inlet pipeline 204 is connected to the summary port of the second solenoid valve 2 and the fifth solenoid valve 5. The output end of the condenser 201b is connected to a condenser outlet pipeline 205, and the condenser outlet pipeline 205 is connected to the summary port of the fourth solenoid valve 4 and the seventh solenoid valve 7.

[0030] This embodiment is further configured as follows: the vegetable greenhouse air-conditioning system 300 includes a greenhouse air-conditioning terminal 302, the input end of the greenhouse air-conditioning terminal 302 is connected to the aggregation port of the third solenoid valve 3 and the fourth solenoid valve 4, the output end of the greenhouse air-conditioning terminal 302 is connected to a return pipe 303, and the return pipe 303 is connected to an air-conditioning water circulation pump 303a, and the air-conditioning water circulation pump 303a is connected to the aggregation port of the first solenoid valve 1 and the second solenoid valve 2.

[0031] This embodiment is further configured to include a DCS control system 400, wherein the DCS control system 400 includes a DCS master station 401, to which a DCS master station signal input cable 403 is connected, to which an indoor remote thermometer 402 is connected, and to which a plurality of DCS master station signal output cables 404 are connected.

[0032] This embodiment is further configured such that a plurality of the DCS master station signal output cables 404 are respectively connected to the first solenoid valve 1, the second solenoid valve 2, the third solenoid valve 3, the fourth solenoid valve 4, the fifth solenoid valve 5, the sixth solenoid valve 6, the seventh solenoid valve 7, the eighth solenoid valve 8, the geothermal water circulation pump 105a, the PLC controller 201c and the air conditioning water circulation pump 303a.

[0033] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0034] Embodiment: According to the attached drawings of the specification, a geothermal energy air-conditioning system suitable for vegetable greenhouses is composed of a geothermal collection system 100, a heat pump unit system 200, a greenhouse air-conditioning system 300, and a DCS control system 400.

[0035] The geothermal collection system 100 includes a buried pipe manifold 101, a geothermal well 102, a buried pipe 103, a buried pipe collector 104, a geothermal water supply pipeline 105, a geothermal water circulation pump 105a, and a geothermal water return pipeline 106. According to different geological conditions, the drilling depth of the geothermal well 102 is 120 to 300 meters. The underground soil temperature at this depth is not affected by the season and is basically constant. The spacing between each geothermal well is controlled to be more than 4.5 meters. The buried pipe is a single-loop U-shaped pipe, which is placed in the geothermal well and the gap is filled with soil. The buried pipe is made of HDPE (high-density polyethylene), which has good durability and corrosion resistance and can operate stably for a long time. A single-loop U-shaped buried pipe is placed in each geothermal well 102. The commonly used pipe diameter is DN20 / 25 / 32 / 40mm, and the flow rate in the pipe is controlled within 1.2m / s. The water flowing through the underground pipe 103 is called working medium water. The working medium water exchanges heat with the underground soil through the underground pipe, and the final water temperature can reach 15-25°C. The number of underground pipes is calculated based on the cold and heat loads of the vegetable greenhouse, and generally requires several to several hundred. Therefore, an underground pipe water distributor 101 is set up. When the water distributor connects each underground pipe, a butterfly valve and a balancing valve are provided to ensure that the pressure of the buried pipes in each place is balanced. After the working medium water exchanges heat with the soil through the underground pipe 103, it enters the underground pipe water collector 104, and then supplies the heat pump unit system 200 through the geothermal water supply pipeline 105 and the geothermal water circulation pump 105a. The heat pump unit system returns water through the geothermal water return pipeline 106 to the underground pipe water distributor 101, and continues to supply water to the underground pipe.

[0036] The heat pump system 200 is composed of a heat pump unit 201 and a water supply and return pipeline. The heat pump unit 201 includes a heat pump unit evaporator 201a, a heat pump unit condenser 201b, and a heat pump unit PLC controller 201c. The water supply and return pipeline includes an evaporator inlet pipeline 202, an evaporator outlet pipeline 203, a condenser inlet pipeline 204, and a condenser outlet pipeline 205.

[0037] In summer working conditions: the heat pump unit is in cooling mode. The function of the heat pump unit is to transfer the heat of the air in the vegetable greenhouse to the working medium water, and the working medium water then conducts the heat to the underground soil. When the working medium water comes out of the heat pump unit condenser 201b, the temperature reaches 30°C. It passes through the condenser outlet pipe 205 and the geothermal water return pipe 106, enters the underground pipe water distributor 101, and then passes through the underground pipe 103. The 30°C working medium water is cooled to 25°C by the soil, enters the underground pipe water collector 104, and then passes through the geothermal water supply pipe 105, the geothermal water circulation pump 105a, and the condenser inlet pipe 204 to supply water to the heat pump unit condenser 201b, and the cycle is repeated.

[0038] In winter, the heat pump unit is in heating mode. The function of the heat pump unit is to transfer the heat in the working water to the air in the vegetable greenhouse. In winter, the working water temperature we can obtain is 15°C. The working water enters the heat pump unit evaporator 201a through the evaporator inlet pipe 202. After leaving the heat pump unit evaporator 201a, the water temperature drops to 9°C. It passes through the evaporator outlet pipe 203 and the geothermal water return pipe 106, and enters the underground pipe water distributor 101. After passing through the underground pipe 103, the working water is heated to 15°C by the underground soil, enters the underground pipe water collector 104, and then passes through the geothermal water supply pipe 105, the geothermal water circulation pump 105a, and the evaporator inlet pipe 202 to supply water to the heat pump unit evaporator 201a, and the cycle is repeated.

[0039] The vegetable greenhouse air conditioning system 300 includes a water supply pipeline 301, a greenhouse air conditioning terminal 302, a return water pipeline 303, and an air conditioning water circulation pump 303a.

[0040] During summer working conditions: the return water temperature of the air conditioner is 12°C, entering the evaporator 201a of the heat pump unit, and the temperature drops to 7°C after leaving the evaporator. Cold water is provided to the greenhouse air conditioning terminal 302 through the evaporator outlet pipe 203 and the water supply pipe 301, and then the air conditioning water circulation pump 303a, the return water pipe 303, and the evaporator inlet pipe 202 supply water to the heat pump unit evaporator 201a again, and the cycle is repeated.

[0041] During winter working conditions: the heating return water temperature is 50°C, entering the heat pump unit condenser 201b, and the temperature rises to 55°C after leaving the condenser. Hot water is provided to the greenhouse air-conditioning terminal 302 through the condenser outlet pipe 205 and the water supply pipe 301, and then the air-conditioning water circulation pump 303a, the return pipe 303, and the condenser inlet pipe 204 supply water to the heat pump unit condenser 201b again, and the cycle is repeated.

[0042] Furthermore, the switching of the working water of the geothermal collection system and the air conditioning water of the vegetable greenhouse air conditioning system in the heat pump unit evaporator 201a and the heat pump unit condenser 201b is achieved by switching the first electric valve to the eighth electric valve. In the summer cooling mode and the winter heating mode, the opening / closing conditions of each valve are as follows:

[0043] 1 2 3 4 5 6 7 8 Cooling mode open close open close open close open close Heating mode close open close open close open close open

[0044] The DCS control system 400 is composed of a DCS master station 401, an indoor remote thermometer 402, a DCS master station signal input cable 403, and a DCS master station signal output cable 404. The indoor air temperature of the vegetable greenhouse is collected by the indoor thermometer 402 and provided to the DCS master station 401 via the DCS master station signal input cable 403. After the DCS master station 401 makes a judgment, it issues operation instructions to the geothermal water circulation pump 105a, the air conditioning water circulation pump 303a, the heat pump unit PLC controller 203c, and the electric valves 1 to 8 to achieve accurate air conditioning cooling or heating purposes.

[0045] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A geothermal energy air conditioning system suitable for a vegetable greenhouse, comprising a geothermal collection system (100) and a vegetable greenhouse air conditioning system (300), characterized in that: The output end of the geothermal collection system (100) is connected to a first valve group, the output end of the first valve group is connected to a heat pump system (200), the output end of the heat pump system (200) is connected to a second valve group, the vegetable greenhouse air conditioning system (300) is connected between the first valve group and the second valve group, the second valve group is connected to the geothermal collection system (100), the first valve group comprises a first solenoid valve (1), a second solenoid valve (2), a fifth solenoid valve (5) and a sixth solenoid valve (6), the second solenoid valve The first solenoid valve (1) and the sixth solenoid valve (6) are connected in series, the second solenoid valve (2) and the fifth solenoid valve (5) are connected in parallel with the first solenoid valve (1) and the sixth solenoid valve (6), the second solenoid valve (2) and the fifth solenoid valve (5) are connected in parallel with the first solenoid valve (1) and the sixth solenoid valve (6), the aggregation port of the second solenoid valve (2) and the fifth solenoid valve (5) is connected to the heat pump system (200), the aggregation port of the first solenoid valve (1) and the sixth solenoid valve (6) is connected to the heat pump system (200), the fifth solenoid valve (5) and the sixth solenoid valve ( The aggregation port of the first solenoid valve (1) and the second solenoid valve (2) is connected to the geothermal collection system (100), the aggregation port of the first solenoid valve (1) and the second solenoid valve (2) is connected to the vegetable greenhouse air conditioning system (300), the second valve group comprises a third solenoid valve (3), a fourth solenoid valve (4), a seventh solenoid valve (7) and an eighth solenoid valve (8), the third solenoid valve (3) and the eighth solenoid valve (8) are connected in series, the fourth solenoid valve (4) and the seventh solenoid valve (7) are connected in series, the third solenoid valve (3) and the eighth solenoid valve (8) are connected in series with the fourth solenoid valve (4), and the eighth solenoid valve (8) are connected in series with the fourth solenoid valve (4). The magnetic valve (4) and the seventh electromagnetic valve (7) are connected in parallel, the aggregation port of the third electromagnetic valve (3) and the eighth electromagnetic valve (8) is connected to the heat pump unit system (200), the aggregation port of the fourth electromagnetic valve (4) and the seventh electromagnetic valve (7) is connected to the heat pump unit system (200), the aggregation port of the seventh electromagnetic valve (7) and the eighth electromagnetic valve (8) is connected to the geothermal collection system (100), and the aggregation port of the third electromagnetic valve (3) and the fourth electromagnetic valve (4) is connected to the vegetable greenhouse air conditioning system (300).

2. A geothermal energy air conditioning system suitable for vegetable greenhouses according to claim 1, characterized in that The geothermal collection system (100) comprises a geothermal well (102), wherein a buried pipe (103) is installed in the geothermal well (102), wherein the input end of the buried pipe (103) is connected to a geothermal water return pipe (106), wherein the geothermal water return pipe (106) is connected to the aggregation port of the seventh solenoid valve (7) and the eighth solenoid valve (8), wherein the output end of the buried pipe (103) is connected to a buried pipe water collector (104), wherein one side of the buried pipe water collector (104) is connected to a geothermal water supply pipe (105), wherein one side of the geothermal water supply pipe (105) is connected to a geothermal water circulation pump (105a), wherein the geothermal water circulation pump (105a) is connected to the aggregation port of the fifth solenoid valve (5) and the sixth solenoid valve (6).

3. A geothermal energy air conditioning system suitable for vegetable greenhouses according to claim 2, characterized in that The heat pump system (200) comprises a heat pump unit (201), wherein the heat pump unit (201) comprises an evaporator (201a) and a condenser (201b), wherein the evaporator (201a) is located on one side of the condenser (201b), and a PLC controller (201c) is provided on the other side of the evaporator (201a), wherein the input end of the evaporator (201a) is connected to an evaporator inlet pipeline (202), wherein the evaporator inlet pipeline (202) is connected to the aggregation port of the first solenoid valve (1) and the sixth solenoid valve (6), and the output end of the evaporator (201a) is connected to a An evaporator outlet pipeline (203), the evaporator outlet pipeline (203) is connected to the aggregation port of the third solenoid valve (3) and the eighth solenoid valve (8), the input end of the condenser (201b) is connected to a condenser inlet pipeline (204), the condenser inlet pipeline (204) is connected to the aggregation port of the second solenoid valve (2) and the fifth solenoid valve (5), the output end of the condenser (201b) is connected to a condenser outlet pipeline (205), the condenser outlet pipeline (205) is connected to the aggregation port of the fourth solenoid valve (4) and the seventh solenoid valve (7).

4. A geothermal energy air conditioning system suitable for vegetable greenhouses according to claim 3, characterized in that The vegetable greenhouse air conditioning system (300) comprises a greenhouse air conditioning terminal (302), the input end of the greenhouse air conditioning terminal (302) is connected to the aggregation port of the third solenoid valve (3) and the fourth solenoid valve (4), the output end of the greenhouse air conditioning terminal (302) is connected to a return pipe (303), the return pipe (303) is connected to an air conditioning water circulation pump (303a), and the air conditioning water circulation pump (303a) is connected to the aggregation port of the first solenoid valve (1) and the second solenoid valve (2).

5. A geothermal energy air conditioning system suitable for vegetable greenhouses according to claim 4, characterized in that , further comprising a DCS control system (400), the DCS control system (400) comprising a DCS master station (401), the DCS master station (401) being connected to a DCS master station signal input cable (403), the DCS master station signal input cable (403) being connected to an indoor remote thermometer (402), and the DCS master station (401) being connected to a plurality of DCS master station signal output cables (404).

6. A geothermal energy air conditioning system suitable for vegetable greenhouses according to claim 5, characterized in that The DCS master station signal output cables (404) are respectively connected to the first solenoid valve (1), the second solenoid valve (2), the third solenoid valve (3), the fourth solenoid valve (4), the fifth solenoid valve (5), the sixth solenoid valve (6), the seventh solenoid valve (7), the eighth solenoid valve (8), the geothermal water circulation pump (105a), the PLC controller (201c) and the air conditioning water circulation pump (303a).

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