A comprehensive composite heating control system for geothermal and air heat pumps

Abstract

The present invention relates to the technical field of comprehensive energy utilization, and particularly relates to a comprehensive composite heating control system for geothermal and air source heat pumps, which includes a heat collection device, a waste heat recovery device, and a control unit. The heat collection device is arranged at the heat input end of the user unit, and the waste heat recovery device is arranged at the heat output end of the user unit. The control unit is used to control the heat collection device to supply heat to the user unit; by combining the ground source heat pump system and the air source heat pump system to form a grid connection to jointly supply heat to the user units in multiple communities, the problem that the ground source heat pump system has a large supply space in addition to meeting the heating of one community, resulting in incomplete utilization of the heat source and waste of geothermal exploitation is solved; at the same time, by using part of the geothermal energy to heat the gas medium in the air source heat pump system, it can ensure the normal startup of the air source heat pump system in a low-temperature environment, which is beneficial to the air source heat pump system to achieve the expected heating effect.

Description

Technical Field

[0001] The present invention relates to the technical field of comprehensive energy utilization, and particularly relates to a comprehensive composite heating control system for geothermal and air source heat pumps. Background Art

[0002] At present, newly built communities and some well-established communities are gradually using ground source heat pump systems to extract geothermal energy to replace traditional boiler heating. However, the geothermal energy collected by general ground source heat pump systems has a large supply space after meeting the heating needs of a community, resulting in incomplete utilization of the heat source and waste of geothermal energy extraction. Some newly built communities still use air source heat pump systems for heating through electric heating. The heat medium of existing air source heat pump systems comes from the external air. Since most air source heat pump systems on the current market are designed to operate normally at 0-40°C, air source heat pump systems often perform excellently in the southern regions with relatively high ambient temperatures. In northern cities where the winter temperature is only -10°C, it is difficult for air source heat pump systems to achieve the expected effects in design. If the temperature is -20°C, the unit may even fail to start normally.

[0003] Therefore, based on the defects existing in the prior art, the present invention proposes a comprehensive composite heating control system for geothermal and air source heat pumps. Summary of the Invention

[0004] The purpose of the present invention is to provide a comprehensive composite heating control system for geothermal and air source heat pumps, which mainly solves the technical problems mentioned in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A comprehensive composite heating control system for geothermal and air source heat pumps, used for heating user units in several communities, includes a heat collection device, a waste heat recovery device, and a control unit. The heat collection device is arranged at the heat input end of the user unit, the waste heat recovery device is arranged at the heat output end of the user unit, and the control unit is used to control the heat collection device to supply heat to the user unit;

[0007] The heat collection device includes a ground source heat pump system, an air source heat pump system, and a collector. The ground source heat pump system and the air source heat pump system are respectively connected to the collector, and the collector is connected to the heat input end of the user unit through a first pipeline unit;

[0008] The waste heat recovery device is connected to the heat output end of the user unit through a second pipeline unit. The ground source heat pump system is used to collect geothermal energy in the earth's crust layer, and part of the geothermal energy is used to heat the gas medium of the air source heat pump system, and the remaining geothermal energy is transported to the collector;

[0009] The air source heat pump system is used to collect the heat energy of the air and transfer the heat energy of the air to the collector;

[0010] The collector is used to distribute the geothermal energy and the heat energy of the air to the user unit for heating;

[0011] The waste heat recovery device is used to collect the heat energy after being utilized by the user unit, and return the heat energy after being utilized by the user unit to the earth's crust layer through the heat circulation pipeline.

[0012] Preferably, the user unit is provided with a plurality of load branches, and a plurality of heat-using loads are arranged under each load branch. The heat inlet ends of the plurality of heat-using loads are connected to the heat inlet of the collector through a first pipeline unit, and the heat outlet ends of the plurality of heat-using loads are collected through a second pipeline unit and then connected to the waste heat recovery device;

[0013] The first pipeline unit includes a heating pipeline and a first electronic valve. One end of the heating pipeline is connected to the heat outlet of the collector, and the other end of the heating pipeline is respectively connected to the heat inlet ends of the plurality of heat-using loads. A first electronic valve is installed at the heat inlet end of each heat-using load, and the first electronic valve is electrically connected to the control unit;

[0014] The second pipeline unit includes a waste heat collection pipeline. One end of the waste heat collection pipeline is respectively connected to the heat outlet ends of the plurality of heat-using loads, and the other end of the waste heat collection pipeline is connected to the liquid inlet end of the waste heat recovery device.

[0015] Preferably, a thermometer is arranged on the heating pipeline of each load branch, and the thermometer is electrically connected to the control unit.

[0016] Preferably, the geothermal energy collection device includes a geothermal heat exchanger and a geothermal energy collection pump. The geothermal heat exchanger is placed in the earth's crust layer. The input end of the geothermal heat exchanger is connected to the liquid outlet end of the waste heat recovery device through the heat circulation pipeline. The output end of the geothermal heat exchanger is connected to the input end of the geothermal energy collection pump through a heat loading pipeline. The output end of the geothermal energy collection pump is connected to the heat inlet of the collector through a first shunt pipeline, and a second electronic valve is installed at the liquid outlet end of the first shunt pipeline;

[0017] The geothermal energy collection pump and the second electronic valve are respectively electrically connected to the control unit.

[0018] Preferably, the air source heat pump system includes;

[0019] An induced draft fan;

[0020] A heat exchanger, the liquid inlet of which is connected to the liquid inlet of the first shunt pipeline through a second shunt pipeline. A third electronic valve is installed on the second shunt pipeline. The liquid outlet of the heat exchanger is connected to the waste heat recovery device through a pipeline. The air inlet of the heat exchanger is connected to the air outlet end of the induced draft fan. The heat exchanger is used to heat and evaporate the low-boiling refrigerant medium in the gas medium inhaled by the induced draft fan to obtain a primary heat medium;

[0021] A compressor, the air inlet end of which is connected to the air outlet of the heat exchanger. The compressor is used to compress the primary heat medium to obtain a secondary heat medium;

[0022] A condenser, the air inlet end of which is connected to the air outlet end of the compressor. The air outlet end of the condenser is communicated with the outside atmosphere. A condensed water supply unit is connected to the liquid inlet end of the condenser. The liquid outlet end of the condenser is connected to the heat inlet of the collector. The condenser is used to exchange heat with the secondary heat medium to obtain air heat energy and transport the air heat energy to the collector;

[0023] The induced draft fan, the third electronic valve, the compressor and the condensed water supply unit are respectively electrically connected to the control unit.

[0024] Preferably, the heat exchanger includes a box body, the inner wall of which is provided with a heat insulation layer. Along the vertical direction, a plurality of water storage trays are arranged side by side on the inner wall of the heat insulation layer. The inside of each water storage tray is set as a hollow structure. The inner walls of two adjacent water storage trays are communicated through a diversion pipe. A heat exchange chamber is arranged between the opposite surfaces of two adjacent water storage trays. A turbulator is installed in the heat exchange chamber;

[0025] An air inlet chamber and an air outlet chamber are respectively reserved on the upper and lower sides of the inner wall of the heat insulation layer. An air inlet, an air outlet, a liquid inlet and a liquid outlet are respectively arranged on the outer side wall of the box body. The air inlet penetrates through the inner wall of the heat insulation layer and is communicated with the air inlet chamber. The air outlet penetrates through the inner wall of the heat insulation layer and is communicated with the air outlet chamber. The liquid inlet penetrates through the inner wall of the heat insulation layer and is communicated with the inner wall of the water storage tray close to the air outlet chamber. The liquid outlet penetrates through the inner wall of the heat insulation layer and is communicated with the inner wall of the water storage tray close to the air inlet chamber;

[0026] A plurality of air guide pipes are arranged in the water storage tray. The two ends of the plurality of air guide pipes respectively penetrate through the inner wall of the water storage tray and are used to communicate the air inlet chamber, the heat exchange chamber and the air outlet chamber.

[0027] Preferably, an electric heating component is installed on the outer side of the water storage tray. A temperature detector is arranged on the outer side of the box body. The test probe of the temperature detector is located in the air inlet chamber;

[0028] The electric heating component and the temperature detector are respectively electrically connected to the control unit.

[0029] Preferably, the spoiler includes a plurality of filter meshes, and the plurality of filter meshes are arranged side by side in the vertical direction in the heat exchange chamber, and the plurality of filter meshes are sequentially installed on a fixed frame, and the fixed frame is installed between opposite surfaces of two adjacent water storage trays.

[0030] Preferably, a water replenishing port is provided at the top of the waste heat recovery device, and the water replenishing port is connected to a water storage tank through a pipeline and a delivery pump, and the delivery pump is used to pump water in the water storage tank into the waste heat recovery device through the pipeline for water replenishment;

[0031] A liquid level detection switch is installed on the inner wall of the waste heat recovery device for monitoring the water storage amount inside the waste heat recovery device;

[0032] The delivery pump and the liquid level detection switch are respectively electrically connected to the control unit.

[0033] Preferably, one end of the air guide pipe extends below the water storage tray and is provided with a diversion part, and the air guide pipe and the diversion part form a T-shaped pipe structure.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] The present invention provides a combined heating technology for a ground source heat pump system and an air source heat pump system. By combining the ground source heat pump system and the air source heat pump system to form a grid connection, it is possible to supply heat to user units in multiple communities through the ground source heat pump system and the air source heat pump system together, thereby solving the problem that there is still a large supply space for the ground source heat pump system after meeting the heating demand of one community, resulting in incomplete utilization of the heat source and waste of geothermal exploitation; at the same time, by using part of the geothermal energy to heat the gas medium in the air source heat pump system, it is possible to ensure the normal startup of the air source heat pump system in a low-temperature environment, which is beneficial to the air source heat pump system to achieve the expected heating effect; and by recycling the heat energy not fully utilized by the user unit, it is possible to further reduce the waste of geothermal exploitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1Schematic diagram of the structure of the comprehensive composite heating control system of the geothermal and air heat source pumps of the present invention;

[0038] Figure 2 In the present invention Figure 1 Schematic diagram of the structure of the heat exchanger;

[0039] Figure 3 In the present invention Figure 1 Schematic diagram of the structure of the user unit;

[0040] In the figure: 1, crust layer; 2, user unit; 3, collector; 4, waste heat recovery device; 5, heat circulation pipeline; 6, heat load; 7, heating pipeline; 8, first electronic valve; 9, waste heat collection pipeline; 10, thermometer; 11, geothermal heat exchanger; 12, geothermal collection pump; 13, heat loading pipeline; 14, first shunt pipeline; 15, second electronic valve; 16, induced draft fan; 17, box body; 18, heat insulation layer; 19, water storage tray; 20, diversion pipe; 21, heat exchange chamber; 22, spoiler; 23, air inlet chamber; 24, air outlet chamber; 25, air inlet; 26, air outlet; 27, liquid inlet; 28, liquid outlet; 29, air duct; 30, diversion part; 31, second shunt pipeline; 32, third electronic valve; 33, compressor; 34, condenser; 35, condensate water supply unit; 36, electric heating component; 37, temperature detector; 38, filter screen; 39, fixed frame; 40, reservoir; 41, delivery pump; 42, liquid level detection switch; 43, heat exchanger; 44, load branch. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] As Figures 1-3As shown in the figure, the present invention provides a comprehensive composite heating control system for geothermal and air heat pumps, which is used to supply heat to user units 2 in several communities. The system includes a heat collection device, a waste heat recovery device 4, and a control unit (controlled by a single-chip microcomputer). The heat collection device is arranged at the heat input end of the user unit 2, and the waste heat recovery device 4 is arranged at the heat output end of the user unit 2. The control unit is used to control the heat collection device to supply heat to the user unit 2. Among them, the heat collection device includes a ground source heat pump system, an air source heat pump system, and a collector 3. The collector 3 is a water collecting tank provided with a heat preservation structure. The ground source heat pump system and the air source heat pump system are respectively connected to the collector 3, so that the ground source heat pump system and the air source heat pump system transport the collected heat energy (including geothermal energy and air heat energy) to the collector 3. Then, the collector 3 is connected to the heat input end of the user unit 2 through the first pipeline unit to supply heat to the user unit 2. The waste heat recovery device 4 is connected to the heat output end of the user unit 2 through the second pipeline unit. The ground source heat pump system is used to collect geothermal energy in the earth's crust layer 1, and part of the geothermal energy is used to heat the gas medium in the air source heat pump system, while the remaining geothermal energy is transported to the collector 3. The air source heat pump system is used to collect air heat energy and transport the air heat energy to the collector 3. The collector 3 is used to distribute geothermal energy and air heat energy to the user unit 2 for heating. The waste heat recovery device 4 is used to collect the heat energy used by the user unit 2 and return the heat energy used by the user unit 2 to the earth's crust layer 1 through the heat circulation pipeline 5.

[0043] In this embodiment, by combining the ground source heat pump system and the air source heat pump system to form a grid connection, the ground source heat pump system and the air source heat pump system can jointly supply heat to the user units 2 in multiple communities, thus solving the problem that there is still a large supply space for the ground source heat pump system after meeting the heating needs of one community, resulting in incomplete utilization of the heat source and waste of geothermal exploitation. At the same time, by using part of the geothermal energy to heat the gas medium in the air source heat pump system, it can ensure the normal startup of the air source heat pump system in a low-temperature environment, which is beneficial to the air source heat pump system to achieve the expected heating effect. And by recycling the heat energy not fully utilized by the user unit 2, it can further reduce the waste of geothermal exploitation.

[0044] Further, the user unit 2 is provided with a number of load branches 44, and a number of heat-using loads 6 are arranged under each load branch 44. The inlet heat ends of the number of heat-using loads 6 are connected to the heat inlet of the collector 3 through the first pipeline unit, and the outlet heat ends of the number of heat-using loads 6 are collected through the second pipeline unit and then connected to the waste heat recovery device 4. The first pipeline unit includes a heat supply pipeline 7 and a first electronic valve 8. One end of the heat supply pipeline 7 is connected to the heat outlet of the collector 3, and the other end of the heat supply pipeline 7 is respectively connected to the inlet heat ends of the number of heat-using loads 6. A first electronic valve 8 is installed at the inlet heat end of each heat-using load 6. The first electronic valve 8 is electrically connected to the control unit. When heating the user unit 2, the corresponding first electronic valve 8 can be controlled to open through the control unit to supply heat to the corresponding heat-using load 6. The second pipeline unit includes a waste heat collection pipeline 9. One end of the waste heat collection pipeline 9 is respectively connected to the outlet heat ends of the number of heat-using loads 6, and the other end of the waste heat collection pipeline 9 is connected to the liquid inlet end of the waste heat recovery device 4. It can collect the heat energy not fully utilized by the heat-using load 6 and return the collected heat energy to the earth's crust layer 1 through the heat circulation pipeline 5 for recycling, thereby reducing the waste of heat energy extraction in the earth's crust layer 1.

[0045] Further, a thermometer 10 is arranged on the heat supply pipeline 7 of each load branch 44. The thermometer 10 is electrically connected to the control unit and is used to detect whether the temperature in the heat supply pipeline 7 reaches the heating requirement of the heat-using load 6. At the same time, it is convenient to quickly check when there are heating problems in the heat supply pipelines 7 of multiple load branches 44.

[0046] Specifically, when the thermometer 10 detects that the temperature in the heat supply pipeline 7 of one of the load branches 44 has a large temperature difference from the temperature in the heat supply pipelines 7 of other load branches 44, it indicates that there is an abnormal heating in the heat supply pipeline 7 of this load branch 44. Therefore, it is not necessary to check each heat supply pipeline 7 of each load branch 44 one by one, which can shorten the maintenance cycle.

[0047] Furthermore, the geothermal energy collection device includes a geothermal heat exchanger 11 and a geothermal energy collection pump 12. The geothermal heat exchanger 11 is placed in the earth's crust layer 1. The input end of the geothermal heat exchanger 11 is connected to the liquid outlet end of the waste heat recovery device 4 through a heat circulation pipeline 5. The output end of the geothermal heat exchanger 11 is connected to the input end of the geothermal energy collection pump 12 through a heat loading pipeline 13. The output end of the geothermal energy collection pump 12 is connected to the heat inlet of the collector 3 through a first shunt pipeline 14. A second electronic valve 15 is installed at the liquid outlet end of the first shunt pipeline 14. The geothermal energy collection pump 12 and the second electronic valve 15 are respectively electrically connected to the control unit. When extracting geothermal energy, first, water is added to the waste heat recovery device 4 to a preset water level, and then the geothermal energy collection pump 12 is started, so that the geothermal energy collection pump 12 pumps the water in the waste heat recovery device 4 into the geothermal heat exchanger 11 through the heat circulation pipeline 5 for heat exchange to obtain geothermal energy, and then the geothermal energy is distributed to the first shunt pipeline 14 and the second shunt pipeline 31 through the heat loading pipeline 13, so that the second shunt pipeline 31 uses part of the geothermal energy to heat the gas medium of the air source heat pump system to prevent the air source heat pump system from failing to start normally in a low-temperature environment; at the same time, the remaining geothermal energy is transported to the collector 3 through the first shunt pipeline 14 for directly heating the user unit 2.

[0048] Furthermore, the air source heat pump system includes a draft fan 16, a heat exchanger 43, a compressor 33, and a condenser 34. The liquid inlet 27 of the heat exchanger 43 is connected to the liquid inlet 27 of the first shunt pipeline 14 through the second shunt pipeline 31. A third electronic valve 32 is installed on the second shunt pipeline 31. The liquid outlet 28 of the heat exchanger 43 is connected to the waste heat recovery device 4 through a pipeline. The air inlet 25 of the heat exchanger 43 is connected to the outlet end of the draft fan 16. The heat exchanger 43 is used to heat and evaporate the low-boiling refrigerant medium in the gas medium inhaled by the draft fan 16 to obtain a primary heat medium; the intake end of the compressor 33 is connected to the outlet 26 of the heat exchanger 43, and the compressor 33 is used to compress the primary heat medium to obtain a secondary heat medium; the intake end of the condenser 34 is connected to the outlet end of the compressor 33, the outlet end of the condenser 34 communicates with the outside atmosphere, the liquid inlet end of the condenser 34 is connected with a condensate water supply unit 35, and the liquid outlet end of the condenser 34 is connected to the heat inlet of the collector 3. The condenser 34 is used to obtain air thermal energy after heat exchange of the secondary heat medium and transport the air thermal energy to the collector 3, wherein the draft fan 16, the third electronic valve 32, the compressor 33, and the condensate water supply unit 35 are respectively electrically connected to the control unit.

[0049] In this embodiment, when the thermometer 10 detects that the temperature in the heating pipeline 7 fails to meet the heating demand of the heat load 6, the control unit opens the third electronic valve 32 and starts the induced draft fan 16, the compressor 33 and the condensate water supply unit 35, so that the geothermal collection pump 12 diverts part of the heat energy through the second shunt pipeline 31 into the heat exchanger 43 to heat and evaporate the low-boiling refrigerant medium in the gas medium inhaled by the induced draft fan 16, obtaining high-temperature water vapor, i.e., the primary heat medium; then the high-temperature water vapor is discharged into the compressor 33 and undergoes compression and demisting treatment to obtain high-temperature and high-pressure gas, i.e., the secondary heat medium; then the high-temperature and high-pressure gas is discharged into the condenser 34 to exchange heat with the condensate water to obtain air heat energy, and finally the air heat energy is transported to the collector 3 to increase the heat supply of the collector 3 to the user unit 2, so that the temperature in the heating pipeline 7 reaches the heating demand of the heat load 6.

[0050] Further, the heat exchanger 43 includes a box body 17. The inner wall of the box body 17 is provided with a heat insulation layer 18. Along the vertical direction, a plurality of water storage trays 19 are arranged side by side on the inner wall of the heat insulation layer 18. The interior of each water storage tray 19 is set as a hollow structure. The inner walls of two adjacent water storage trays 19 are connected through a diversion pipe 20. A heat exchange chamber 21 is arranged between the opposite surfaces of two adjacent water storage trays 19. A turbulator 22 is installed in the heat exchange chamber 21, which can slow down the flow rate of the gas, extend the heat exchange time, and improve the heat energy conversion efficiency; an air inlet chamber 23 and an air outlet chamber 24 are respectively reserved on the upper and lower sides of the inner wall of the heat insulation layer 18. An air inlet 25, an air outlet 26, a liquid inlet 27 and a liquid outlet 28 are respectively arranged on the outer side wall of the box body 17. The air inlet 25 penetrates through the inner wall of the heat insulation layer 18 and is connected to the air inlet chamber 23. The air outlet 26 penetrates through the inner wall of the heat insulation layer 18 and is connected to the air outlet chamber 24. The liquid inlet 27 penetrates through the inner wall of the heat insulation layer 18 and is connected to the inner wall of the water storage tray 19 close to the air outlet chamber 24. The liquid outlet 28 penetrates through the inner wall of the heat insulation layer 18 and is connected to the inner wall of the water storage tray 19 close to the air inlet chamber 23; a plurality of air guide pipes 29 are arranged in the water storage tray 19. Both ends of the plurality of air guide pipes 29 penetrate through the inner wall of the water storage tray 19 respectively, and are used to connect the air inlet chamber 23, the heat exchange chamber 21 and the air outlet chamber 24.

[0051] As a specific implementation manner of the present invention, refer to Figure 2 As shown, three groups of water storage trays 19 are arranged inside the heat exchanger 43, and the diversion pipes 20 between the three groups of water storage trays 19 are arranged staggeredly, which can enhance the fluidity of geothermal energy in the three groups of water storage trays 19, so that the water storage trays 19 are evenly heated and the heat conversion uniformity of the gas medium is improved.

[0052] Further, an electric heating component 36 is installed on the outer side of the water storage tray 19, a temperature detector 37 is arranged on the outer side of the box body 17, and the test probe of the temperature detector 37 is located in the air inlet chamber 23; the electric heating component 36 and the temperature detector 37 are respectively electrically connected to the control unit; when the temperature detector 37 detects that the temperature inside the box body 17 fails to reach the boiling point of the low-boiling refrigerant medium in the gas medium, the control unit controls the electric heating component 36 to heat the water storage tray 19 until the temperature detector 37 detects that the temperature inside the box body 17 reaches the boiling point of the low-boiling refrigerant medium in the gas medium, and then stops heating.

[0053] Further, the spoiler 22 includes a plurality of filter meshes 38, the plurality of filter meshes 38 are arranged side by side in the vertical direction in the heat exchange chamber 21, and the plurality of filter meshes 38 are sequentially installed on a fixed frame 39, and the fixed frame 39 is installed between the opposite surfaces of two adjacent water storage trays 19, so that the water vapor generated after the gas evaporates forms a water film on the multi-layer filter meshes 38, which can further enhance the spoiler effect on the gas and slow down the flow rate of the gas.

[0054] Further, a water replenishing port is opened at the top end of the waste heat recovery device 4, the water replenishing port is connected to a water storage tank 40 through a pipeline and a delivery pump 41, and the delivery pump 41 is used to pump the water in the water storage tank 40 into the waste heat recovery device 4 through the pipeline for water replenishment; a liquid level detection switch 42 is installed on the inner wall of the waste heat recovery device 4, and the delivery pump 41 and the liquid level detection switch 42 are respectively electrically connected to the control unit, and are used to detect the water storage amount inside the waste heat recovery device 4 through the liquid level detection switch 42. Among them, when the liquid level detection switch 42 detects that the water storage amount inside the waste heat recovery device 4 is lower than the preset water level, the delivery pump 41 is controlled by the control unit to realize automatic water replenishment of the waste heat recovery device 4, so as to prevent the water inside the waste heat recovery device 4 from being exhausted, resulting in dry burning damage of the heating control system.

[0055] Further, one end of the air guide pipe 29 extends to the lower part of the water storage tray 19 and is provided with a diversion part 30, and the air guide pipe 29 and the diversion part 30 form a T-shaped pipe structure, which is used to change the flow direction of the gas, so that the gas diffuses from the vertical direction to the horizontal sides, thereby prolonging the heating and evaporation time of the gas and enabling the low-boiling refrigerant medium in the gas to be fully evaporated.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A comprehensive composite heating control system for a geothermal and air heat pump, which is used to supply heat to user units (2) in several communities, is characterized in that, It includes a heat collection device, a waste heat recovery device (4) and a control unit. The heat collection device is arranged at the heat input end of the user unit (2), the waste heat recovery device (4) is arranged at the heat output end of the user unit (2), and the control unit is used to control the heat collection device to supply heat to the user unit (2). The heat collection device includes a ground source heat pump system, an air source heat pump system and a collector (3). The ground source heat pump system and the air source heat pump system are respectively connected to the collector (3), and the collector (3) is connected to the heat input end of the user unit (2) through a first pipeline unit. The waste heat recovery device (4) is connected to the heat output end of the user unit (2) through a second pipeline unit. The ground source heat pump system is used to collect geothermal energy in the earth's crust layer (1), and part of the geothermal energy is used to heat the gas medium of the air source heat pump system, and the rest of the geothermal energy is transported to the collector (3). The air source heat pump system is used to collect air heat energy and transport the air heat energy to the collector (3). The collector (3) is used to distribute the geothermal energy and the air heat energy to the user unit (2) for heat supply. The waste heat recovery device (4) is used to collect the heat energy after being utilized by the user unit (2), and the heat energy after being utilized by the user unit (2) is returned to the earth's crust layer (1) through a heat circulation pipeline (5). Wherein, the heat collection device includes a geothermal heat exchanger (11) and a geothermal collection pump (12). The output end of the geothermal heat exchanger (11) is connected to the input end of the geothermal collection pump (12) through a heat loading pipeline (13), and the output end of the geothermal collection pump (12) is connected to the heat inlet of the collector (3) through a first shunt pipeline (14). Wherein, the air source heat pump system includes; An induced draft fan (16); A heat exchanger (43). The liquid inlet (27) of the heat exchanger (43) is connected to the liquid inlet (27) of the first shunt pipeline (14) through a second shunt pipeline (31). A third electronic valve (32) is installed on the second shunt pipeline (31). The liquid outlet (28) of the heat exchanger (43) is connected to the waste heat recovery device (4) through a pipeline. The air inlet (25) of the heat exchanger (43) is connected to the air outlet end of the induced draft fan (16). The heat exchanger (43) is used to heat and evaporate the low-boiling refrigerant medium in the gas medium inhaled by the induced draft fan (16) to obtain a primary heat medium. A compressor (33). The air inlet end of the compressor (33) is connected to the air outlet (26) of the heat exchanger (43). The compressor (33) is used to compress the primary heat medium to obtain a secondary heat medium. A condenser (34), the intake end of the condenser (34) is connected to the outlet end of the compressor (33), the outlet end of the condenser (34) is in communication with the outside atmosphere, the liquid inlet end of the condenser (34) is connected to a condensate water supply unit (35), the liquid outlet end of the condenser (34) is connected to the heat inlet of the collector (3), and the condenser (34) is used for exchanging heat with the secondary heat medium to obtain air heat energy and delivering the air heat energy to the collector (3); The induced draft fan (16), the third solenoid valve (32), the compressor (33) and the condensate water supply unit (35) are respectively electrically connected to the control unit.

2. The integrated composite heating control system of a geothermal and air heat pump according to claim 1, wherein The user unit (2) is provided with a plurality of load branches (44), and a plurality of heat-consuming loads (6) are arranged under each load branch (44). The heat inlet ends of the plurality of heat-consuming loads (6) are connected to the heat inlet of the collector (3) through a first pipeline unit, and the heat outlet ends of the plurality of heat-consuming loads (6) are collected through a second pipeline unit and then connected to the waste heat recovery device (4); The first pipeline unit includes a heating pipeline (7) and a first solenoid valve (8). One end of the heating pipeline (7) is connected to the heat outlet of the collector (3), and the other end of the heating pipeline (7) is respectively connected to the heat inlet ends of the plurality of heat-consuming loads (6). The first solenoid valve (8) is installed at the heat inlet end of each heat-consuming load (6), and the first solenoid valve (8) is electrically connected to the control unit; The second pipeline unit includes a waste heat collection pipeline (9). One end of the waste heat collection pipeline (9) is respectively connected to the heat outlet ends of the plurality of heat-consuming loads (6), and the other end of the waste heat collection pipeline (9) is connected to the liquid inlet end of the waste heat recovery device (4).

3. The integrated composite heating control system of a geothermal and air heat pump according to claim 2, characterized in that, A thermometer (10) is arranged on the heating pipeline (7) of each load branch (44), and the thermometer (10) is electrically connected to the control unit.

4. A comprehensive composite heating control system for geothermal and air heat pumps according to claim 1, characterized in that, The geothermal heat exchanger (11) is placed in the earth's crust layer (1). The input end of the geothermal heat exchanger (11) is connected to the liquid outlet end of the waste heat recovery device (4) through the heat circulation pipeline (5), and a second solenoid valve (15) is installed at the liquid outlet end of the first shunt pipeline (14); The geothermal collection pump (12) and the second solenoid valve (15) are respectively electrically connected to the control unit.

5. A comprehensive composite heating control system for geothermal and air heat pumps according to claim 4, characterized in that, The heat exchanger (43) includes a box body (17). The inner wall of the box body (17) is provided with a heat insulation layer (18). A plurality of water storage trays (19) are arranged side by side along the vertical direction on the inner wall of the heat insulation layer (18). The inside of each water storage tray (19) is of a hollow structure. The inner walls of adjacent two water storage trays (19) are communicated through a diversion pipe (20). A heat exchange chamber (21) is arranged between the opposite surfaces of adjacent two water storage trays (19), and a turbulator (22) is installed in the heat exchange chamber (21); On the upper and lower sides of the inner wall of the heat insulation layer (18), an air inlet chamber (23) and an air outlet chamber (24) are respectively reserved. On the outer side wall of the box body (17), an air inlet (25), an air outlet (26), a liquid inlet (27) and a liquid outlet (28) are respectively arranged. The air inlet (25) penetrates through the inner wall of the heat insulation layer (18) and is communicated with the air inlet chamber (23). The air outlet (26) penetrates through the inner wall of the heat insulation layer (18) and is communicated with the air outlet chamber (24). The liquid inlet (27) penetrates through the inner wall of the heat insulation layer (18) and is communicated with the inner wall of the water storage tray (19) on the side close to the air outlet chamber (24). The liquid outlet (28) penetrates through the inner wall of the heat insulation layer (18) and is communicated with the inner wall of the water storage tray (19) on the side close to the air inlet chamber (23); A number of air guide pipes (29) are arranged in the water storage tray (19). The two ends of the number of air guide pipes (29) respectively penetrate through the inner wall of the water storage tray (19) and are used to communicate the air inlet chamber (23), the heat exchange chamber (21) and the air outlet chamber (24).

6. The integrated composite heating control system of a geothermal and air heat pump according to claim 5, characterized in that, An electric heating component (36) is installed on the outer side of the water storage tray (19). A temperature detector (37) is arranged on the outer side of the box body (17). The test probe of the temperature detector (37) is located in the air inlet chamber (23); The electric heating component (36) and the temperature detector (37) are respectively electrically connected to the control unit.

7. A comprehensive composite heating control system for geothermal and air heat pumps according to claim 5, characterized in that, The flow deflector (22) includes a number of filter meshes (38). The number of filter meshes (38) are arranged side by side in the vertical direction in the heat exchange chamber (21), and the number of filter meshes (38) are sequentially installed on a fixed frame (39). The fixed frame (39) is installed between the opposite surfaces of two adjacent water storage trays (19).

8. A comprehensive composite heating control system for geothermal and air heat pumps according to claim 1, characterized in that, A water replenishing port is arranged at the top of the waste heat recovery device (4). The water replenishing port is connected with a water storage tank (40) through a pipeline and a delivery pump (41). The delivery pump (41) is used to pump the water in the water storage tank (40) into the waste heat recovery device (4) through the pipeline for water replenishment; A liquid level detection switch is installed on the inner wall of the waste heat recovery device (4) for monitoring the water storage amount inside the waste heat recovery device (4); The delivery pump (41) and the liquid level detection switch are respectively electrically connected to the control unit.

9. A comprehensive composite heating control system for geothermal and air heat pumps according to claim 5, characterized in that, One end of the air guide pipe (29) extends below the water storage tray (19) and is provided with a diversion part (30). The air guide pipe (29) and the diversion part (30) form a T-shaped pipe structure.

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