Air source heat pump and ground source heat pump multi-energy conditioning system and regulation method

Abstract

The application provides an air source heat pump and ground source heat pump multi-energy regulation system and a regulation method, relates to the technical field of energy utilization and building energy saving, and the air source heat pump and ground source heat pump multi-energy regulation system comprises a ground buried pipe unit for heat exchange with soil; the ground buried pipe unit comprises a plurality of ground buried pipes buried in the ground; the number of the ground buried pipes in the ground buried pipe unit is greater than a predetermined ground buried pipe number; the predetermined ground buried pipe number is the ground buried pipe number required when the ground source heat pump is under maximum load; during a working period in which the air source heat pump uses surplus photovoltaic power to supplement heat to the soil, the ground buried pipes in the ground buried pipe unit are dynamically allocated into a first ground buried pipe area for heat exchange for the ground source heat pump, a second ground buried pipe area for heat exchange for the air source heat pump and an idle buffer area. According to the air source heat pump and ground source heat pump multi-energy regulation system and the regulation method, coupling of the ground source heat pump and the air source heat pump is realized, and heat accumulation is avoided.

Description

Technical Field

[0001] This invention relates to the field of energy utilization and building energy conservation, and particularly to a multi-energy regulation system and control method for air source heat pumps and ground source heat pumps. Background Technology

[0002] Ground source heat pumps utilize the stable temperature of underground soil year-round to achieve continuous and stable heating and cooling, almost unaffected by external climate fluctuations. However, when they undertake the task of cross-seasonal energy storage, the long-term mismatch between heat extraction and heat storage can lead to soil thermal imbalance, which in turn causes a decline in system energy efficiency.

[0003] Air source heat pumps are often regarded as an ideal complementary solution. They have been widely used in the HVAC field due to their significant energy-saving characteristics and operating efficiency, but their performance is limited by geographical and climatic conditions.

[0004] Therefore, using air source heat pumps for cross-seasonal heat storage of ground source heat pumps to compensate for the soil heat balance problem of ground source heat pump systems is a common approach. However, when these two systems are used together, local heat accumulation around the ground source heat pump and rising condensation temperature of the air source heat pump often occur, leading to a decrease in efficiency and exacerbating the soil heat imbalance. Summary of the Invention

[0005] The purpose of this invention is to address the above problems by providing a multi-functional regulation system and control method for air source heat pumps and ground source heat pumps, which realizes the coupling of ground source heat pumps and air source heat pumps and avoids heat accumulation.

[0006] In a first aspect, the present invention provides a multi-energy regulation system for air source heat pumps and ground source heat pumps, comprising: the regulation system having a buried pipe unit for heat exchange with soil; the buried pipe unit comprising a plurality of buried pipes buried underground; the number of buried pipes in the buried pipe unit being greater than a predetermined number of buried pipes; the predetermined number of buried pipes being the number of buried pipes required when the ground source heat pump is at its maximum load; during the working period when the air source heat pump uses surplus photovoltaic power to supplement heat to the soil, the buried pipes in the buried pipe unit are dynamically allocated into a first buried pipe area for heat exchange with the ground source heat pump, a second buried pipe area for heat exchange with the air source heat pump, and an idle buffer zone; the first buried pipe area and the second buried pipe area are diagonally distributed; the buried pipes in the buffer zone can be opened according to a set rule for heat exchange by the ground source heat pump or for heat exchange by the air source heat pump; the air source heat pump is used to start working by surplus electricity from the photovoltaic power supply system during the non-heating season of the ground source heat pump, supplementing heat to the soil through the buried pipes in the second buried pipe area.

[0007] According to the technical solution provided by the present invention, the buried pipes of the buried pipe unit are arranged in a rectangular pattern. When the buried pipes of the first buried pipe area are arranged in an n×n pattern according to the predetermined number of buried pipes, the buried pipe unit as a whole is arranged in a (n+m)×(n+m) pattern.

[0008] According to the technical solution provided by the present invention, a reversible heat pipe is arranged around the buried pipe unit perpendicular to the burial depth direction of the buried pipe, and a phase change adsorption device is provided at the end of the reversible heat pipe away from the buried pipe.

[0009] According to the technical solution provided by the present invention, the air source heat pump includes: a first heat exchanger, wherein the cooling medium pipeline of the first heat exchanger is connected in parallel with the cooling medium pipeline of the second condenser in the air source heat pump and is switched by a three-way valve; a second heat exchanger, wherein the cooling medium pipeline of the second heat exchanger is connected in parallel with the cooling medium pipeline of the second evaporator in the air source heat pump and is switched by a three-way valve; the heat exchange pipelines of the first heat exchanger and the second heat exchanger are both connected to the underground pipe of the second underground pipe area, and the underground pipe of the second underground pipe area is switched to be connected to the first heat exchanger or to the second heat exchanger by a three-way valve.

[0010] According to the technical solution provided by the present invention, the heat exchange pipeline of the second condenser of the air source heat pump is connected to the indoor heat exchange pipeline of the ground source heat pump through a three-way valve, so that the air source heat pump can perform working compensation when the ground source heat pump is overloaded.

[0011] According to the technical solution provided by the present invention, the buried pipe unit is also uniformly provided with a number of temperature sensor groups buried underground for monitoring soil temperature; each temperature sensor group includes at least a top temperature sensor corresponding to the top of the buried pipe, a middle temperature sensor corresponding to the middle of the buried pipe, and a bottom temperature sensor corresponding to the bottom of the buried pipe.

[0012] Secondly, the present invention provides a multi-energy regulation system and control method for air source heat pumps and ground source heat pumps, including a multi-energy regulation method for air source heat pumps and ground source heat pumps, comprising the following steps: when the ground source heat pump discharges heat to the soil, the buried pipe in the buried pipe unit is opened according to a first set rule to dynamically form a first buried pipe area; the surplus electricity in photovoltaic power generation is used to start the air source heat pump, and the buried pipe in the buried pipe unit is opened according to a second set rule to dynamically form a second buried pipe area, wherein the first buried pipe area and the second buried pipe area are diagonally distributed.

[0013] According to the technical solution provided by the present invention, the first setting rule is as follows: Prioritize activating the buried pipe located at the diagonal end within the buried pipe unit, where the diagonal is any diagonal of the outline of the area formed by all buried pipes in the buried pipe unit; form a first outline area by the area formed by the activated buried pipes used for the ground source heat pump; acquire temperature data from the temperature sensor group closest to the center of the first outline area to obtain a soil temperature array for the first outline area; when any temperature in the soil temperature array of the first outline area exceeds the high temperature threshold of its corresponding depth, activate the buried pipe closest to the first activated buried pipe within the buffer zone; when all temperatures in the soil temperature array of the first outline area are below the low temperature threshold of their corresponding depths, close the buried pipe furthest from the first activated buried pipe within the first buried pipe area.

[0014] According to the technical solution provided by the present invention, the second setting rule is as follows: prioritize starting the buried pipe closest to the diagonal and furthest from the center of the first buried pipe area; form a second contour area by using the already opened buried pipes for the air source heat pump; obtain the temperature data of the temperature sensor group closest to the center of the second contour area to obtain a soil temperature array of the second contour area; when any temperature in the soil temperature array of the second contour area exceeds the high temperature threshold of its corresponding depth, start the buried pipe in the buffer zone that is furthest from the center of the first buried pipe area; when the air source heat pump is turned off, all buried pipes in the second buried pipe area are turned off.

[0015] According to the technical solution provided by the present invention, the method further includes the following steps: selecting the temperature sensor group closest to the center point of the diagonal as the monitoring sensor group; acquiring the temperature data group of the monitoring sensor group to obtain the adjacent temperature data group; and determining that when any temperature in the adjacent temperature data group exceeds the high temperature threshold of its corresponding depth, closing the buried pipe in the second buried pipe area that is closest to the center of the first buried pipe area.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: Powering the ground source heat pump and air source heat pump with a photovoltaic power supply system reduces energy consumption and promotes energy conservation. The entire system, through the coupling between the air source heat pump and the ground source heat pump, ensures the basic heating and cooling loads, while the air source heat pump flexibly responds to extreme weather and locally absorbs surplus photovoltaic power, achieving "electricity-heat" conversion and cross-seasonal energy storage. The buried pipe circulation of the air source heat pump can be activated when the photovoltaic power supply system generates surplus power to drive the air source heat pump for cross-seasonal heat storage. Furthermore, the air source heat pump is turned off at other times, avoiding unnecessary thermal interference. Simultaneously, the heat supplied by the air source heat pump to the soil can be directly recovered and utilized, forming a directional heat transfer, improving the overall quality, and achieving active intervention and rapid dissipation of soil temperature. Moreover, when the air source heat pump is on, it can store heat in the soil, further increasing the overall heat storage capacity. Even if heat loss occurs when the heat stored by the ground source heat pump is used in winter, the heat stored by the air source heat pump can compensate for this heat loss. This effectively solves the problem of soil thermal imbalance and system energy efficiency degradation caused by the long-term mismatch between heat extraction and heat storage. By setting a predetermined number of buried pipes exceeding the maximum load required by the ground source heat pump and dividing the system into a first and second buried zone with diagonal distribution, spatial isolation and buffering of the thermal activity area are achieved. This significantly reduces thermal interference when both systems operate simultaneously, ensuring the long-term stability and high-efficiency operation of the ground source heat pump. Secondly, the air source heat pump operates using surplus electricity from the photovoltaic power supply system and starts during the non-heating season. It replenishes heat to the soil through the second buried zone, creating an efficient conversion path of "green electricity → heat energy → cross-seasonal storage." This avoids the spatiotemporal mismatch between the photovoltaic power supply system's electricity and the building load, achieving precise absorption and value-added utilization of renewable energy. The overall system structure design achieves clear functional division and flexible coordination based on physical coupling, enabling the ground source heat pump and air source heat pump to dynamically complement each other according to climate and load. This improves the system's adaptability, reliability, and comprehensive energy security capabilities in the face of extreme conditions and load fluctuations.

[0017] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this invention do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the assembly structure of an air source heat pump and a ground source heat pump multi-energy regulation system provided in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of an air source heat pump and ground source heat pump multi-energy regulation system provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of a multi-energy regulation system for air source heat pump and ground source heat pump provided in an embodiment of the present invention. In this case, the air source heat pump stores heat for the soil through the user end.

[0022] Figure 4 This is a schematic diagram of a multi-energy regulation system for air source heat pump and ground source heat pump provided in an embodiment of the present invention. In this case, the air source heat pump works in conjunction with the ground source heat pump to provide heating to the user end.

[0023] Figure 5 This is a schematic diagram of a multi-energy regulation system for air source heat pump and ground source heat pump provided in an embodiment of the present invention. In this case, the air source heat pump stores heat from the soil through the air.

[0024] Figure 6 A top view of a buried pipe unit of an air source heat pump and ground source heat pump multi-energy regulation system provided in an embodiment of the present invention;

[0025] Figure 7A flowchart illustrating a multi-energy control method for air-source heat pumps and ground-source heat pumps provided in an embodiment of the present invention.

[0026] The text labels in the image represent:

[0027] 101. Photovoltaic panels; 102. Inverters;

[0028] 200. Client side;

[0029] 300. Ground source heat pump; 301. First condenser; 302. First compressor; 303. First evaporator; 304. First expansion valve; 305. First water distributor; 306. First water collector; 307. First underground pipe;

[0030] 400. Air source heat pump; 401. Second compressor; 402. Second evaporator; 403. Second expansion valve; 404. Second condenser; 405. Second water distributor; 406. Second water collector; 407. First heat exchanger; 408. Second heat exchanger; 409. Second underground pipe;

[0031] 810. Phase change adsorption device; 820. Reversible heat pipe;

[0032] 900. Underground pipe unit. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. This description is merely illustrative and explanatory, and should not be construed as limiting the scope of protection of the present invention in any way. Specifically, the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0035] As mentioned in the background section, ground source heat pumps utilize the stable temperature of underground soil year-round to achieve continuous and stable heating and cooling, almost unaffected by external climate fluctuations. However, when they undertake the task of cross-seasonal energy storage, the long-term mismatch between heat extraction and heat storage can lead to soil thermal imbalance, which in turn causes a decline in system energy efficiency.

[0036] Air source heat pumps are often regarded as an ideal complementary solution. They have been widely used in the HVAC field due to their significant energy-saving characteristics and operating efficiency, but their performance is limited by geographical and climatic conditions.

[0037] Therefore, using air source heat pumps for cross-seasonal heat storage of ground source heat pumps to compensate for the soil heat balance problem of ground source heat pump systems is a common approach. However, when these two systems are used together, local heat accumulation around the ground source heat pump and rising condensation temperature of the air source heat pump often occur, leading to a decrease in efficiency and exacerbating the soil heat imbalance.

[0038] To address the problems in the existing technology, this embodiment provides a multi-energy regulation system and control method for air source heat pumps and ground source heat pumps. The following description, in conjunction with the appendix to the specification, will be provided. Figures 1-7 The first aspect of the present invention describes in detail the air source heat pump and ground source heat pump multi-energy regulation system.

[0039] like Figure 1 As shown, according to Figure 1 The illustrated air-source heat pump and ground-source heat pump multi-energy regulation system includes a buried pipe unit 900 for heat exchange with the soil. The buried pipe unit 900 includes several buried pipes, thereby enabling the transfer of heat from the user end 200 to the soil and heat exchange with the soil through multiple buried pipes.

[0040] Among them, such as Figure 1 As shown, the number of buried pipes in the buried pipe unit 900 is greater than the predetermined number of buried pipes. The predetermined number of buried pipes is the number required for the ground source heat pump 300 at its maximum load. For example, if the buried pipes of the ground source heat pump 300 need to be arranged in a 4×4 pattern, then the predetermined number of buried pipes is sixteen. Therefore, in the actual arrangement of the buried pipes, they can be arranged in a 5×5 pattern, meaning the maximum number of buried pipes can be twenty-five. Figure 6 The diagram shows a top view of the buried pipe unit 900. The multiple predetermined buried pipes in the buried pipe unit 900 are the buried pipes used by the ground source heat pump 300. In order to ensure that the ground source heat pump 300 can operate stably under maximum load, more buried pipes are set up relative to the predetermined number of buried pipes, thereby facilitating the subsequent control of the use of the buried pipes.

[0041] During the operating period when the air source heat pump uses surplus photovoltaic power to supplement soil heat, the buried pipes in the buried pipe unit 900 are divided into a first buried pipe area for heat exchange with the ground source heat pump 300, a second buried pipe area for heat exchange with the air source heat pump 400, and an idle buffer zone. The buried pipes in the first buried pipe area can exchange heat with the soil, thereby enabling heat exchange between the ground source heat pump 300 and the user terminal 200 after the buried pipes in the first buried pipe area exchange heat with the soil. Correspondingly, the buried pipes in the second buried pipe area can exchange heat with the soil, and after heat exchange, enabling heat exchange between the air source heat pump 400 and the user terminal 200. The buried pipes in the buffer zone can be opened according to set rules for heat exchange by the ground source heat pump 300 or for heat exchange by the air source heat pump 400.

[0042] Specifically, when the heat exchange efficiency of the ground source heat pump 300 decreases, the buried pipe in the buffer zone can be opened and connected to the ground source heat pump 300, thus serving as the buried pipe for the ground source heat pump 300. Correspondingly, if the heat exchange efficiency of the air source heat pump 400 decreases, the buried pipe in the buffer zone can also be opened and connected to the air source heat pump 400, thus serving as the buried pipe for the air source heat pump 400.

[0043] Among them, such as Figure 1 and Figure 6 As shown, the first and second underground pipe sections are diagonally distributed. For ease of explanation, the diagonal distribution of the first and second underground pipe sections is as follows: Figure 6 The direction of the extension of the centerline L5 is shown. The first buried pipe area is the area enclosed by the dashed box R1, the second buried pipe area is the area enclosed by the dashed box R2, and the buffer zone is the area enclosed by the line box R3.

[0044] In summer, when the ground source heat pump 300 cools the user terminal 200, the heat from the user terminal 200 is transferred to the soil through the ground source heat pump 300. Similarly, when the air source heat pump 400 is turned on in summer, it can also transfer heat to the soil through the buried pipes in the second buried pipe area. Therefore, when both the ground source heat pump 300 and the air source heat pump 400 are turned on simultaneously, the increased soil temperature caused by the heat transferred from the buried pipes in the second buried pipe area will affect the soil temperature around the buried pipes in the first buried pipe area. This will reduce the heat exchange efficiency of the buried pipes in the first buried pipe area, and consequently, reduce the cooling effect of the ground source heat pump 300 on the user terminal 200.

[0045] In this regard, such as Figure 6 As shown, the present invention arranges the first and second buried pipe areas in a diagonal configuration, which can effectively reduce the impact of heat exchange between the buried pipes in the second buried pipe area and the soil on the heat exchange effect of the buried pipes in the first buried pipe area after the air source heat pump 400 is turned on.

[0046] Furthermore, the air source heat pump 400 is used to start working with the surplus electricity of the photovoltaic power supply system during the non-heating season of the ground source heat pump 300, and to supplement the soil with heat through the buried pipe in the second buried pipe area.

[0047] Specifically, in this regulation system, the photovoltaic power supply system is used to supply power to the regulation system. In addition, the photovoltaic power supply system also supplies power to equipment other than the ground source heat pump 300 and air source heat pump 400 throughout the building, such as the daily electricity consumption of the user terminal 200, etc. The non-heating season refers to the season other than winter.

[0048] For example, in summer, when cooling is needed for user terminal 200, the photovoltaic power supply system supplies power to the ground source heat pump 300, enabling it to operate and provide cooling to user terminal 200. Therefore, the ground source heat pump 300 exchanges heat with user terminal 200, transferring the heat to the soil through the buried pipes in the first buried pipe zone. The photovoltaic power supply system has surplus power beyond meeting the daily electricity needs of user terminal 200 and the ground source heat pump 300. This surplus power can be supplied to the air source heat pump 400. Once activated, the air source heat pump 400 exchanges heat with user terminal 200 and transfers heat to the soil through the buried pipes in the second buried pipe zone. This heat can then be used by the ground source heat pump 300 to heat user terminal 200 during the heating season. This achieves the conversion of surplus photovoltaic power into thermal energy storage, further increasing the overall system's heat storage capacity, and allowing the heat to be stored during non-heating seasons such as summer and extracted for use during the winter heating season. The air source heat pump 400 achieves cross-seasonal energy storage by converting surplus electricity into heat energy, which can increase the overall system's heat storage capacity and avoid the heat imbalance caused by heat loss when using a single ground source heat pump 300 system in winter.

[0049] During transitional seasons such as spring or autumn, user unit 200 may not require heating or cooling, therefore the ground source heat pump 300 does not need to be turned on. At this time, due to the higher external ambient temperature, heat exchange between the soil and the external environment can be achieved by turning on the air source heat pump 400, transferring heat to the soil for storage through the buried pipes in the second buried pipe zone. The stored heat can then be used to power the ground source heat pump 300 during the winter.

[0050] According to the present invention, a multi-energy regulation system for air-source and ground-source heat pumps utilizes a photovoltaic power supply system to power both the ground-source heat pump 300 and the air-source heat pump 400, reducing energy consumption and promoting energy conservation. The entire system achieves energy-to-heat conversion and cross-seasonal energy storage through the coupling between the air-source heat pump 400 and the ground-source heat pump 300. The ground-source heat pump 300 ensures basic heating and cooling loads, while the air-source heat pump 400 flexibly responds to extreme weather conditions and locally absorbs surplus photovoltaic power, realizing "electricity-to-heat" conversion and cross-seasonal energy storage. The buried pipe circulation of the air-source heat pump 400 can be activated when the photovoltaic power supply system generates surplus power to drive the air-source heat pump 400 for cross-seasonal heat storage. Furthermore, the air-source heat pump 400 is shut down at other times, avoiding unnecessary thermal interference. Simultaneously, the heat supplied by the air-source heat pump 400 to the soil can be directly recovered and utilized, forming a directional heat transfer, improving overall quality, and achieving active intervention and rapid dissipation of soil temperature. Furthermore, when the air source heat pump 400 is turned on, it can store heat in the soil, further increasing the overall heat storage capacity. Even if the heat stored by the ground source heat pump 300 is lost during winter, the heat stored by the air source heat pump 400 can compensate for this loss. This effectively solves the problem of soil thermal imbalance and system energy efficiency degradation caused by long-term mismatch between heat extraction and heat storage. By setting a predetermined number of buried pipes exceeding the maximum load required by the ground source heat pump 300 and dividing it into a first buried pipe zone and a second buried pipe zone with diagonal distribution, spatial isolation and buffering of the thermal activity area are achieved. This significantly reduces thermal interference when the two systems are running simultaneously, ensuring the long-term stable and efficient operation of the ground source heat pump 300. Secondly, the air source heat pump 400 operates using surplus electricity from the photovoltaic power supply system and starts up during the non-heating season. It replenishes heat to the soil through a second underground pipe area, creating a highly efficient conversion path of "green electricity → heat energy → cross-seasonal storage." This avoids the spatiotemporal mismatch between the photovoltaic power supply system's electricity and the building's load, achieving precise absorption and value-added utilization of renewable energy. The overall system structure design achieves clear functional division and flexible coordination based on physical coupling, enabling the ground source heat pump 300 and air source heat pump 400 to dynamically complement each other according to climate and load, thus improving the system's adaptability, reliability, and comprehensive energy security capabilities in the face of extreme conditions and load fluctuations.

[0051] For ease of subsequent description, the buried pipe in the first buried pipe area is defined as the first buried pipe 307, and the buried pipe in the second buried pipe area is defined as the second buried pipe 409. Furthermore, for the sake of subsequent description, the air source heat pump 400 system and the ground source heat pump 300 system will be described here first.

[0052] like Figure 1 and Figure 5As shown, the photovoltaic power supply system includes photovoltaic panels 101 and inverters 102. The photovoltaic panels 101 convert solar energy into electrical energy, which is then supplied to the building user terminal 200, the ground source heat pump system 300, and the air source heat pump system 400 via the inverter 102. The ground source heat pump system 300 includes a first condenser 301, a first compressor 302, a first evaporator 303, a first expansion valve 304, a first water distributor 305, a first water collector 306, and a first underground pipe 307. The air source heat pump system 400 includes a second compressor 401, a second evaporator 402, a second expansion valve 403, a second condenser 404, a second water distributor 405, a second water collector 406, and a second underground pipe 409.

[0053] The water distributor can simultaneously distribute the heat exchange medium to multiple buried pipes, and the water collector can connect to the outlet of multiple buried pipes, thus drawing out the heat exchange medium from multiple buried pipes.

[0054] Those skilled in the art can Figure 1 and Figure 2 The connection methods of each structure are undoubtedly understood as the conventional heat exchange technology between the ground source heat pump 300 and the user end 200, and the conventional heat exchange technology between the air source heat pump 400 and the user end 200.

[0055] In some embodiments of the present invention, the underground pipes of the underground pipe unit 900 are arranged in a rectangular pattern. When the underground pipes of the first underground pipe area are arranged in an n×n pattern according to the predetermined number of underground pipes, the underground pipe unit 900 as a whole is arranged in a (n+m)×(n+m) pattern.

[0056] Specifically, such as Figure 6As shown, the buried pipe unit 900 adopts a regular rectangular matrix arrangement. If the ground source heat pump 300 requires n×n first buried pipes 307 at full load, then the entire buried pipe unit 900 requires at least (n+m)×(n+m) buried pipes. Here, m is a positive integer. For example, if 4×4 first buried pipes 307 need to be arranged, then the actual total number of buried pipes can be 5×5 or a larger 7×7. If the buried pipes are arranged in a 5×5 manner, then n=4, m=1. Correspondingly, if the buried pipes are arranged in a 7×7 manner, then n=4, m=3. This arrangement is clear and regular, facilitating engineering design and construction. Furthermore, the extra buried pipes can be allocated to supply the air source heat pump 400 or used as buffer buried pipes. Compared to the prior art, which sets up a separate buried pipe area for the air source heat pump, the embodiments of the present invention save on the number and cost of buried pipes. By combining the appropriate increase of underground pipes with dynamic adjustments, the problem of heat accumulation caused by the interaction between the two systems is solved at a low cost. Therefore, even when the first underground pipe 307 of the ground source heat pump 300 is running at full load, the operating efficiency of the ground source heat pump 300 can be guaranteed by regulating the operation of the remaining underground pipes.

[0057] In some embodiments of the present invention, a reversible heat pipe 820 is arranged around the buried pipe unit 900 perpendicular to the burial depth direction of the buried pipe, and a phase change adsorption device 810 is provided at the end of the reversible heat pipe 820 away from the buried pipe.

[0058] like Figure 1 and Figure 6 As shown, a reversible heat pipe 820 is arranged around the buried pipe. Those skilled in the art will understand that the reversible heat pipe 820 is a heat pipe capable of bidirectional heat transfer. The buried pipe is buried vertically into the soil, therefore the burial direction perpendicular to the buried pipe is parallel to the horizontal plane. Heat exchange between the buried pipe and the phase change adsorption device 810 can be achieved through the reversible heat pipe 820.

[0059] Multiple reversible heat pipes 820 can be arranged into a heat pipe array and installed between the buried pipe and the phase change adsorption device 810.

[0060] Those skilled in the art will understand that the phase change material in the phase change adsorption device 810 can store or release heat through a phase change. In summer, the heat exchanged between the ground source heat pump 300 and the user terminal 200 can be transferred through the buried pipe to the reversible heat pipe 820, and finally absorbed and stored by the phase change adsorption device 810. During winter heating, the ground source heat pump 300 can absorb heat from the phase change adsorption device 810 through the reversible heat pipe 820 and transfer the heat to the buried pipe, thereby providing heating for the user terminal 200. Similarly, when the air source heat pump 400 absorbs heat and needs to store it in the phase change adsorption device 810, the heat can also be transferred from the buried pipe to the reversible heat pipe 820, and finally stored by the phase change adsorption device 810.

[0061] In some embodiments of the present invention, such as Figure 2 As shown, the air source heat pump 400 includes a first heat exchanger 407 and a second heat exchanger 408. The cooling medium pipeline of the first heat exchanger 407 is connected in parallel with the cooling medium pipeline of the second condenser 404 within the air source heat pump 400, and is switched via a three-way valve. The cooling medium pipeline of the second heat exchanger 408 is connected in parallel with the cooling medium pipeline of the second evaporator 402 within the air source heat pump 400, and is switched via a three-way valve. The heat exchange pipelines of both the first heat exchanger 407 and the second heat exchanger 408 are connected to the underground pipes of the second underground pipe area. The underground pipes of the second underground pipe area are switched between connecting to the first heat exchanger 407 or the second heat exchanger 408 via a three-way valve.

[0062] It should be noted that, as Figures 1-5 As can be seen from the figure, the connection between multiple structures in this application is through three-way valves. Therefore, the connection between multiple structures in this document has been described as being connected by three-way valves. The identification of multiple three-way valves has been marked in the figure. Those skilled in the art can understand the location of the three-way valves through the figure, so it will not be described in detail.

[0063] In this embodiment, compared to the existing air source heat pump 400, the air source heat pump 400 of the present invention adds two heat exchangers, namely a first heat exchanger 407 and a second heat exchanger 408. The pipes of the first heat exchanger 407 can be connected in parallel to the second condenser 404 side, and the pipes of the second heat exchanger 408 can be connected in parallel to the second evaporator 402 side.

[0064] By switching the valves on the three-way valve, the air source heat pump 400 can operate in multiple modes. For example... Figure 5 As shown, during the transitional season when photovoltaic power is abundant, the air source heat pump 400 stores heat from the air into the soil through the first heat exchanger 407 and the second buried pipe 409. Figure 3As shown, during the summer when there is surplus photovoltaic power, the air source heat pump 400 stores the waste heat from the user terminal 200's indoor space into the soil through the second heat exchanger 408. This greatly expands the application scenarios and flexibility of the air source heat pump 400 as an energy storage conversion unit. It improves system reliability and makes mode switching faster and more stable. When the air source heat pump 400 needs to cool the user terminal 200 in the summer, it directly exchanges heat with the outside air through the second evaporator 402 and the second condenser 404 to achieve direct cooling of the user terminal 200. Those skilled in the art will understand that the actual functions of the second evaporator 402 and the second condenser 404 change depending on whether the air source heat pump 400 is cooling or heating the user terminal 200, which will not be elaborated here.

[0065] In some embodiments of the present invention, the heat exchange pipeline of the second condenser 404 of the air source heat pump 400 is connected to the indoor heat exchange pipeline of the ground source heat pump 300 through a three-way valve, so that the air source heat pump 400 can perform working compensation when the ground source heat pump 300 is overloaded.

[0066] Specifically, such as Figure 4 As shown, under extreme weather conditions, when the heating load at user 200 surges and the ground source heat pump 300 alone cannot meet the demand, the ground source heat pump 300 can be temporarily shut down. This can be achieved by switching the valve on the three-way valve to connect the circulating water circuit of the second condenser 404 of the air source heat pump 400 to the indoor circulating water circuit of the ground source heat pump 300. This allows the air source heat pump 400 to directly serve as the heating device for user 200. Therefore, when the ground source heat pump 300 reaches full load, the air source heat pump 400 can immediately start and directly output heat to user 200, quickly and directly compensating for the load shortfall, ensuring stable indoor temperature, and effectively coping with extreme weather conditions.

[0067] In some embodiments of the present invention, the buried pipe unit 900 is also uniformly provided with several groups of temperature sensors buried underground for monitoring soil temperature; each group of temperature sensors includes at least a top temperature sensor corresponding to the top of the buried pipe, a middle temperature sensor corresponding to the middle of the buried pipe, and a bottom temperature sensor corresponding to the bottom of the buried pipe.

[0068] Specifically, multiple temperature sensor groups are deployed throughout the buried pipe area. Each group is on the same vertical line and includes at least three temperature sensors, each corresponding to the top, middle, and bottom of the buried pipe (top, middle, and bottom temperature sensors, as mentioned above). This allows for monitoring of the temperature in the shallow, middle, and deep soil layers—that is, the temperature below the frozen soil layer, in the core heat exchange zone of the buried pipe, and in the deep soil. By sensing the soil temperature through multiple sensors at different locations, the operating status of the ground source heat pump 300 and the air source heat pump 400 can be monitored. The overall thermal condition of each area and the degree of mutual thermal interference can be monitored in real time. This provides a precise data foundation for subsequent intelligent control.

[0069] The following is in conjunction with the instruction manual appendix. Figures 1-7 The method for multi-energy regulation of air-source heat pumps and ground-source heat pumps according to the second aspect of the present invention is described in detail, based on the regulation system of the first aspect described above, such as... Figure 7 As shown, the multi-energy control method for the air source heat pump 400 and the ground source heat pump 300 of the second aspect of the present invention includes the following steps:

[0070] Step S1: When the local source heat pump 300 discharges heat to the soil, the buried pipe in the buried pipe unit 900 is opened according to the first set rule, and the first buried pipe area is dynamically formed.

[0071] Step S2: Use the surplus electricity from photovoltaic power generation to start the air source heat pump 400, open the underground pipe in the underground pipe unit 900 according to the second set rule, dynamically form the second underground pipe area, and the first underground pipe area and the second underground pipe area are diagonally distributed.

[0072] Specifically, based on the load demand of the ground source heat pump 300, a set of buried pipes, namely multiple first buried pipes 307, are dynamically activated according to a first preset rule, dynamically forming a stable first buried pipe zone R1. Simultaneously or subsequently, when surplus power is detected in the photovoltaic power supply system, the air source heat pump 400 can be started, and another set of buried pipes, namely multiple second buried pipes 409, are dynamically activated according to a second preset rule, dynamically forming a supplementary second buried pipe zone R2. Through control, it is ensured that the buried pipes activated in both zones R1 and R2 always tend to remain at opposite ends of the diagonal.

[0073] The following is based on Figure 6 The following example will be used for illustration. Figure 6As shown, for ease of description, the horizontally arranged underground pipes are sequentially defined as B1, B2, B3, B4, B5, B6, and B7. The vertically arranged underground pipes are sequentially defined as A1, A2, A3, A4, A5, A6, and A7. The entire underground pipe unit 900 has a 7×7 spatial layout. The 4×4 area at the upper left corner of this unit is defined as the first underground pipe area R1 formed by the first underground pipe 307. Correspondingly, the 3×3 area at the lower right corner of this unit is defined as the second underground pipe area R2 formed by the second underground pipe 409. Therefore, the first and second underground pipe areas are diagonally distributed.

[0074] This effectively reduces the impact of heat stored in the soil after the second buried pipe 409 is activated on the area of ​​the first buried pipe 307. It ensures that, in actual operation, the ground source heat pump 300 system and the air source heat pump 400 system maintain maximum physical separation and minimize mutual interference. Using surplus photovoltaic power as a specific condition for triggering supplemental heating by the air source heat pump 400 tightly couples energy supply, the air source heat pump 400, and the soil through an automated process.

[0075] According to the control method of the second aspect of the present invention, this method dynamically controls the opening and closing sequence and range of all buried pipes in the first and second buried pipe areas through a first set rule and a second set rule, realizing refined and intelligent management of the soil temperature field. It can actively guide the heat flow distribution and adjust in real time based on temperature feedback from temperature sensors, thereby accurately preventing local heat accumulation or overcooling, actively maintaining soil thermal balance, and directly and efficiently solving the problem of system energy efficiency degradation. Simultaneously, the air source heat pump 400 is driven by surplus photovoltaic power. The second buried pipe area and the first buried pipe area are diagonally distributed, and the air source heat pump 400 operates in time following the surplus photovoltaic power. Spatially, it maximizes the thermal interference distance, thereby ensuring that the base load of the ground source heat pump 300 is not affected while efficiently absorbing green electricity, achieving system-level global optimization of energy production, conversion, and storage. Furthermore, rule-based dynamic adjustment ensures that the system always operates close to optimal conditions, significantly improving the overall energy efficiency and economy of the entire coupled system from a control perspective by reducing ineffective energy consumption, extending equipment life, and maintaining soil health.

[0076] In some embodiments of the present invention, the first setting rule is:

[0077] Prioritize starting the buried pipe located at the diagonal end within the buried pipe unit 900, where the diagonal is any diagonal of the area outline formed by all buried pipes in the buried pipe unit 900;

[0078] The area formed by the already opened underground pipe used for the ground source heat pump 300 is designated as the first outline area;

[0079] Obtain the temperature data of the temperature sensor group closest to the center of the first contour area to obtain the soil temperature array of the first contour area;

[0080] When any temperature in the soil temperature array of the first contour area exceeds the high temperature threshold of its corresponding depth, the buried pipe closest to the first opened buried pipe in the buffer is activated.

[0081] Specifically, the high temperature threshold will be explained in detail later.

[0082] When all temperatures in the soil temperature array of the first contour area are below the low temperature threshold of their corresponding depth, the buried pipe furthest from the first opened buried pipe in the first buried pipe area is closed.

[0083] Specifically, such as Figure 6 As shown, the diagonal is line L5, with Figure 6 Taking a 7×7 layout as an example, the first setting rule is specified as follows: When the ground source heat pump 300 starts, the first buried pipe 307 at the farthest end in the upper left corner, i.e., the first buried pipe 307 of A1 and B1, is opened first. As the load changes, the opening sequence is expanded "from far to near". That is, the first buried pipes 307 of A1 and B2, and the first buried pipes 307 of A2 and B1 can be opened sequentially, until the first buried pipes 307 of A4 and B4 are opened, thus forming the first buried pipe area R1. The ground source heat pump 300 system obtains the temperature data of the center of this operating area in real time and makes intelligent decisions. If the center of the area is overheated, the buried pipes in the two buffer zones R3 are opened to disperse the heat. A buried pipe can be opened from the buffer zone R3 in the upper right corner, or a buried pipe can be opened from the buffer zone R3 in the lower left corner. And the buried pipe opened in the buffer zone should be the buried pipe closest to the first buried pipe area R1. If the overall temperature of the first buried pipe area R1 decreases... Then close one of the open underground pipes in the first underground pipe zone R1 and the innermost underground pipe zone R2.

[0084] This ensures that the ground source heat pump 300 always starts heat exchange from the most suitable soil temperature at the far end, maximizing efficiency. Simultaneously, by automatically adjusting the number of active buried pipes through temperature feedback, it prevents both localized soil freezing due to excessive heat extraction and localized overheating due to continuous heat dissipation, achieving proactive maintenance of soil temperature. Furthermore, the dynamic utilization of buffer zones enhances system resilience. When heat accumulates within the first buried pipe zone, the rules allow for the temporary activation of buried pipes in the buffer zone. This provides the ground source heat pump 300 system with additional heat exchange capacity to cope with instantaneous high loads, enhancing system resilience.

[0085] In some embodiments of the present invention, the second setting rule is:

[0086] Prioritize starting the underground pipe that is closest to the diagonal and furthest from the center of the first underground pipe zone;

[0087] The already opened underground pipe for the air source heat pump 400 forms the second contour area;

[0088] Obtain the temperature data of the temperature sensor group closest to the center of the second contour area to obtain the soil temperature array of the second contour area;

[0089] If any temperature in the soil temperature array of the second contour area exceeds the high temperature threshold of its corresponding depth, the buried pipe in the buffer that is farthest from the center of the first buried pipe area will be activated.

[0090] Specifically, the high temperature threshold will be explained in detail later.

[0091] When the air source heat pump 400 is turned off, all underground pipes in the second underground pipe zone are shut off.

[0092] Specifically, such as Figure 6 As shown, similarly Figure 6 Taking a 7x7 layout as an example, when the air source heat pump 400 performs supplementary heating, the second set rule requires that the second buried pipes 409 at the farthest points A7 and B7 in the lower right corner be turned on first. During the supplementary heating process, the temperature of the center of its own dedicated area, i.e., the second buried pipe area R2 formed by multiple second buried pipes 409, is monitored. If the supplementary heating causes the second buried pipe area R2 to overheat, the buried pipes in the buffer zone can also be turned on to dissipate heat. And the buried pipe in the buffer zone that is turned on should be the buried pipe farthest from the first buried pipe area R1. Once the photovoltaic power supply system has no surplus power or the supplementary heating process needs to be ended, the air source heat pump 400 is immediately turned off to shut down all the second buried pipes 409 used for supplementary heating.

[0093] By maximizing the safety and efficiency of heat replenishment through a second set of rules, heat replenishment begins from the location furthest from the ground source heat pump 300, minimizing the immediate thermal interference of heat replenishment on the operating ground source heat pump 300. Simultaneously, temperature feedback control of the second buried pipe zone prevents "self-heating accumulation" during the heat replenishment process, ensuring that the air source heat pump 400 operates efficiently at a consistently low condensing temperature. Furthermore, it ensures the purity and reversibility of the heat replenishment process by stipulating that the second buried pipe zone is completely shut off when heat replenishment ceases, ensuring independent control of the heat replenishment process, avoiding complex and uncontrollable long-term thermal effects, and facilitating system management and status analysis.

[0094] In some embodiments of the present invention, such as Figure 7 As shown, the multi-energy control method for air source heat pumps and ground source heat pumps also includes the following steps:

[0095] Step S3: Select the temperature sensor group that is closest to the center point of the diagonal as the monitoring sensor group;

[0096] Step S4: Obtain the temperature data set of the monitoring sensor group to obtain the adjacent temperature data set;

[0097] Step S5: If any temperature in the adjacent temperature data group exceeds the high temperature threshold of its corresponding depth, close the underground pipe in the second underground pipe area that is closest to the center of the first underground pipe area.

[0098] Specifically, such as Figure 6 As shown, the diagonal can be as follows: Figure 6 Line L5 is shown in the diagram. The group of temperature sensors closest to the center point of line L5 is used as the monitoring sensor group. For example... Figure 6 The system monitors the area near the center of the grid shown and reads the temperature there. This is the path for heat to diffuse from the air source heat pump 400 to the ground source heat pump 300. If an abnormal temperature increase is detected here, it indicates an increased risk of thermal interference, and the system will take immediate action. The second buried pipe 409 closest to the ground source heat pump 300 in the air source heat pump 400 can be shut off. Alternatively, after shutting off the second buried pipe 409 closest to the ground source heat pump 300 in the air source heat pump 400, the buried pipes in the buffer zone can be opened for auxiliary heat dissipation.

[0099] Among them, the second buried pipe 409 closest to the ground source heat pump 300 in the second buried pipe zone R2 can be closed sequentially. For example, after all the second buried pipes 409 in the second buried pipe zone are opened, the second buried pipes 409 at A5 and B5 can be closed first, and then the second buried pipes 409 at A5 and B6 and the second buried pipes 409 at A6 and B5 can be closed sequentially. This process is repeated to ensure the operational performance of the ground source heat pump 300.

[0100] The overall control strategy of the buried pipe of the present invention will be described below.

[0101] Dynamic management strategies for underground pipelines need to address the timing and location of pipeline activation. The guiding principle is to avoid simultaneously activating all underground pipelines in all areas, prioritizing the activation of pipelines at more distant locations to prevent localized overheating. An example is provided below.

[0102] like Figure 6 As shown, in a 7×7 grid, there are 49 possible locations for buried pipes. The first buried pipe area can be assigned to A1-A4 and B1-B4, making it a 4×4 region. The second buried pipe area can be assigned to A5-A7 and B5-B7, resulting in 9 possible 3×3 locations. The remaining locations between the first and second buried pipe areas can serve as buffer zones. For example... Figure 6 B5-B7 in A1-A4 and B1-B4 in A5-A7 can be used as buffers or spare areas.

[0103] The 4x4 area in the upper left corner is the first underground pipe zone, containing 16 underground pipes, numbered A1 to A4 and B1 to B4. During operation, the first underground pipe 307, which is furthest from the second underground pipe zone (i.e., the first underground pipe 307 near A1-B1), can be opened first. Based on the load demand of user terminal 200, the corresponding underground pipes A1, B2, A2, B1, and A2, B2, i.e., the first underground pipe 307 of the first underground pipe zone, are opened sequentially from farthest to nearest. This process is repeated for each underground pipe 307.

[0104] During the non-heating season, to avoid localized overheating, the external heat pipes can effectively conduct heat discharged from the buried pipes to the soil and store it using the phase change adsorption device 810. The heat conduction between the buried pipes and the phase change adsorption device 810 is achieved through a reversible heat pipe 820. Furthermore, the thermal imbalance of the soil can be alleviated by alternately activating multiple first buried pipes 307. For example, on the first day, several first buried pipes 307 in row A1 of the first buried pipe area can be used, and on the second day, several first buried pipes 307 in row A2 of the first buried pipe area can be activated. If the needs of the user are still not met after activating multiple first buried pipes 307 in the first buried pipe area, buried pipes near the buffer zone of the first buried pipe area can be activated. However, priority should still be given to using the buried pipe furthest from the second buried pipe area.

[0105] During the heating season, the stored heat is concentrated by the reversible heat pipe 820 and directed to the first buried pipe area. The first buried pipe 307 of the ground source heat pump 300 is activated as needed based on the indoor heating load of the user terminal 200 to provide heating for the user terminal 200. Priority is given to using the first buried pipes 307 in the edge areas of the buried pipe unit 900 for heat extraction, such as the first buried pipes 307 on the A1 and B1 sides. This leaves the colder areas in the middle of the buried pipe unit 900. When the soil temperature near the outer buried pipes drops to a set value, the first buried pipes 307 in the middle area are gradually activated, such as the first buried pipes 307 at positions A2 and B2. The first buried pipes 307 in the middle area work in coordination with the first buried pipes 307 in the outer area. The first buried pipe 307 closest to the inside is activated last. Simultaneously, the outer buried pipes also follow a rotation mechanism to maintain a relatively high average heat extraction temperature. In addition, at the beginning of the heating season, priority can be given to using soil areas that have been supplemented with heat by the air source heat pump 400 during the non-heating season to efficiently extract the heat stored in summer.

[0106] Correspondingly, the control strategy for the multiple second buried pipes 409 of the air source heat pump 400 is similar, in the second buried pipe area, i.e. Figure 6The lower right 3×3 area contains 9 buried pipes, numbered A5 to A7 and B5 to B7. During the initial heating phase, the second buried pipe 409, furthest from the first buried pipe area, is activated first, specifically those near A7 and B7. This is a "safe zone" to avoid thermal interference with the first buried pipe area. Simultaneously, the soil temperature at the boundary between the second and first buried pipe areas is monitored. During the continuous heating and rotation phase, if the photovoltaic power supply system has sufficient power and more second buried pipes 409 need to be activated for heating, the system will activate them in order from furthest to nearest, for example, activating the second buried pipes 409 at A7, B6, and then A6 and B7. To prevent localized soil overheating within the second buried pipe area, the reversible heat pipe 820 can rapidly conduct some of the heat to the phase change adsorption device 810 for storage. In addition, the second buried pipe 409 can be turned on alternately. For example, the second buried pipe 409 on the B6 side can be used mainly on the first day, and the second buried pipe 409 on the B7 side can be used on the second day, so that the soil has time to balance the heat.

[0107] In this invention, multiple temperature sensors are arranged around the buried pipe in the shallow (5 to 10 meters below the frost layer), middle (middle of the buried pipe), and deep (bottom of the buried pipe) soil layers. These sensors are located at the same height as the approximate center of the buried pipes corresponding to the ground source heat pump 300 and the air source heat pump 400. They are also located at the same height at the boundary between the two heat pump buried pipe zones. During the cooling season, the middle layer temperature should not consistently exceed the annual average ground temperature by 8 to 10°C. If it approaches or exceeds this range, it indicates severe heat accumulation, and measures such as opening more buried pipes or rotating buried pipes can be taken.

[0108] A group of temperature sensors arranged vertically around the buried pipe is used to monitor the vertical thermal impact and heat accumulation around a single buried pipe, and to determine heat migration. The shallow layer is used to monitor short-term temperature changes and atmospheric effects in the shallow soil, the middle layer is used to monitor the temperature of the core area where the buried pipe exchanges heat with the soil, and the deep layer is used to monitor the migration and long-term accumulation trend of heat to deeper layers.

[0109] Temperature sensor arrays positioned near the center of the first and second underground pipe sections monitor the thermal balance levels of each section. If the near-center temperature continues to rise, it indicates severe heat accumulation within both sections, necessitating the activation of buffer zones or adjustment strategies. Temperature sensor arrays positioned at the boundary between the two sections monitor thermal interference between them. The near-center temperatures of the first and second underground pipe sections fluctuate within ±3℃ of the annual average ground temperature throughout the year. If the temperature exceeds the set limit, the number of underground pipes can be reduced or activated as needed.

[0110] The temperature sensor group is placed at the boundary between the first and second buried pipe zones to prevent thermal activity in one zone from causing immediate interference to the other. If the soil temperature at the boundary rises too quickly, exceeding the initial temperature by 4 to 6°C, the buried pipes in the buffer zone can be activated to supply power to the ground source heat pump 300. If the temperature exceeds the initial temperature by 6 to 8°C, the second buried pipes 409 closest to the first buried pipe zone can be temporarily shut off until the temperature drops. Therefore, temperatures exceeding the soil temperature by 3°C, 4 to 6°C, and 6 to 8°C can all be considered as reaching the high-temperature thresholds mentioned above.

[0111] In extreme weather conditions, when the ground source heat pump 300 operates at full load, dissipating heat to its first buried pipe zone, and simultaneously there is a large surplus of photovoltaic power, requiring the air source heat pump 400 to also start supplementary heating, priority must be given to ensuring the heat dissipation effect of the ground source heat pump 300. By arranging a group of temperature sensors around the buried pipes, if the soil temperature at the edge of the first buried pipe zone is detected to rise too rapidly, the buried pipes in the buffer zone can be activated for use by the ground source heat pump 300, or the second buried pipes 409 closest to the first buried pipe zone can be temporarily shut down until the temperature drops. The supplementary heating phase of the air source heat pump 400 can even be temporarily scheduled during periods when the ground source heat pump 300's load is lower.

[0112] The following explains the control strategy for using buried pipes in air source heat pump 400 and ground source heat pump 300.

[0113] The buried pipes of the two heat pumps are spatially isolated. During the non-heating season, the air source heat pump 400 is used for soil supplementation. It is assumed that the number of activated second buried pipes 409 is sufficient to meet the heating and cooling load requirements of user 200. The buried pipes of the air source heat pump 400 and the ground source heat pump 300 are arranged in a rectangular pattern. When the air source heat pump 400 is activated for soil supplementation during the non-heating season, in order not to affect the operating efficiency of the ground source heat pump 300, the first and second buried pipe areas are divided into two zones, and the distance between these two zones should be as large as possible. Therefore, the following is adopted: Figure 6 The diagonal partitioning method shown in the image maximizes the distance between two regions and minimizes thermal interference.

[0114] The first underground pipe zone bears the basic load and is responsible for most of the daily cooling load. The first underground pipe zone needs to be stable, so it is placed in one corner of a rectangular area, for example... Figure 6 The top left corner is shown. The second buried pipe zone is responsible for heat replenishment and regulation, using surplus photovoltaic power to heat the soil during the day. It should be placed diagonally opposite the first buried pipe zone, at the furthest interval. Figure 6 The bottom right corner is shown in the image.

[0115] The following examples illustrate this, such as Figure 6The diagram shows a 7×7 grid with 49 possible pipe installation points. The first buried pipe zone is assigned to A1-A4 and B1-B4. This zone has 16 pipe installation points in a 4×4 grid, used to bear the foundation load. The second buried pipe zone is assigned to A5-A7 and B5-B7. This zone has 9 pipe installation points in a 3×3 grid, specifically for summer heat supplementation. The buffer zone is the area between the two first and second buried pipe zones, as shown... Figure 6 As shown, for example, B5-B7 in A1-A4, and B1-B4 in A5-A7, can all be used as buffer zones or spare areas, that is... Figure 6 The two R3 regions in the middle.

[0116] In extreme cases, if the ground source heat pump 300 experiences extremely high load, the buried pipes in the buffer zone closest to the first buried pipe zone can be activated according to load demand, but the buried pipes furthest from the second buried pipe zone should be used first. Therefore, the straight-line distance between the central core areas of the first and second buried pipe zones is relatively large, and the time required for heat transfer from one area to another is longer, thus greatly reducing immediate interference. This effectively avoids interference from the heat replenishment of the air source heat pump 400 on the heat exhaust of the ground source heat pump 300 in summer. The reversible heat pipe 820 can also effectively and quickly transfer the heat transferred from the two heat pumps to the soil to the phase change adsorption device 810 for storage.

[0117] The following example, using a full workday, illustrates the process: In the morning, with strong and abundant sunlight, the photovoltaic power supply system begins generating electricity. User 200 begins requiring cooling, so the ground source heat pump 300 starts, using its first buried pipe 307 in the upper left corner of the first buried pipe area to stably dissipate heat into the soil. From noon to afternoon, the photovoltaic power supply system reaches its peak power generation, producing a large amount of surplus electricity. The air source heat pump 400 starts, using its second buried pipe 409 in the lower right corner of the second buried pipe area to enter supplemental heating mode. The control system prioritizes starting the second buried pipes 409 in the lower left corner of this second buried pipe area, i.e., the second buried pipes 409 furthest from the ground source heat pump 300. This converts electrical energy into heat energy stored in the soil. In the afternoon, the cooling load remains high, and the ground source heat pump 300 continues to dissipate heat. The photovoltaic power supply system still has sufficient power, and the air source heat pump 400 continues to supplement heat into the soil. The control system monitors the soil temperature at the boundary between the two first and second buried pipe areas in real time. If the temperature is normal, the air source heat pump 400 can activate more of the second buried pipes 409 as needed, following the principle of starting from the furthest point and working towards the nearest. If the temperature at the boundary between the first and second buried pipe areas rises abnormally, the air source heat pump 400 will reduce the number of second buried pipes 409 activated or lower its power to ensure that the heat dissipation efficiency of the ground source heat pump 300 is not affected. At night, the photovoltaic power supply system stops generating electricity, and the air source heat pump 400 stops supplemental heating. The ground source heat pump 300 may still be operating depending on load demand, but at this time it can occupy more of the buried pipe area to make the heat dissipation efficiency of the ground source heat pump 300 higher.

[0118] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes, or combinations, or the direct application of the applied concept and technical solution to other occasions without modification, should all be considered within the scope of protection of the present invention.

Claims

1. An air source heat pump and ground source heat pump multi-energy conditioning system, characterized in that: The regulating system is provided with a buried pipe unit (900) for exchanging heat with the soil; the buried pipe unit (900) includes a number of buried pipes buried underground; the number of buried pipes in the buried pipe unit (900) is greater than the predetermined number of buried pipes; the predetermined number of buried pipes is the number of buried pipes required when the ground source heat pump (300) is at its maximum load. During the working period when the air source heat pump (400) uses surplus photovoltaic power to supplement the soil with heat, the buried pipes in the buried pipe unit (900) are dynamically allocated as follows: a first buried pipe area for heat exchange of the ground source heat pump (300), a second buried pipe area for heat exchange of the air source heat pump (400), and an idle buffer zone; the first buried pipe area and the second buried pipe area are diagonally distributed; the buried pipes in the buffer zone can be opened according to the set rules for heat exchange of the ground source heat pump (300) or for heat exchange of the air source heat pump (400); The air source heat pump (400) is used to start operating from the surplus electricity of the photovoltaic power supply system during the non-heating season of the ground source heat pump (300), and to supplement the soil with heat through the buried pipes in the second buried pipe area. The air source heat pump (400) includes: The first heat exchanger (407) has its cooling medium pipeline connected in parallel with the cooling medium pipeline of the second condenser (404) in the air source heat pump (400), and is switched by a three-way valve. The second heat exchanger (408) has its cooling medium pipeline connected in parallel with the cooling medium pipeline of the second evaporator (402) in the air source heat pump (400), and is switched by a three-way valve. The heat exchange pipelines of the first heat exchanger (407) and the second heat exchanger (408) are both connected to the underground pipes of the second underground pipe area. The underground pipes of the second underground pipe area are switched to be connected to the first heat exchanger or to the second heat exchanger through a three-way valve.

2. The air source heat pump and ground source heat pump multi-capacity conditioning system of claim 1, wherein: The underground pipes of the underground pipe unit (900) are arranged in a rectangular pattern. When the underground pipes of the first underground pipe area are arranged in an n×n pattern according to the predetermined number of underground pipes, the underground pipe unit (900) as a whole is arranged in a (n+m)×(n+m) pattern.

3. The air source heat pump and ground source heat pump multi-capacity conditioning system of claim 1, wherein: A reversible heat pipe (820) is arranged around the buried pipe unit (900) perpendicular to the burial depth direction of the buried pipe, and a phase change adsorption device (810) is provided at the end of the reversible heat pipe (820) away from the buried pipe.

4. The air source heat pump and ground source heat pump multi-capacity conditioning system of claim 1, wherein, The heat exchange pipeline of the second condenser (404) of the air source heat pump (400) is connected to the indoor heat exchange pipeline of the ground source heat pump (300) through a three-way valve, so that the air source heat pump (400) can compensate for the overload of the ground source heat pump (300).

5. The air source heat pump and ground source heat pump multi-capacity conditioning system of claim 1, wherein, The buried pipe unit (900) is also evenly equipped with several groups of temperature sensors buried underground to monitor soil temperature; each group of temperature sensors includes at least a top temperature sensor corresponding to the top of the buried pipe, a middle temperature sensor corresponding to the middle of the buried pipe, and a bottom temperature sensor corresponding to the bottom of the buried pipe.

6. A method of multi-energy regulation of an air source heat pump and a ground source heat pump, based on the regulation system of claim 1, characterized in that, Includes the following steps: When the local source heat pump (300) discharges heat to the soil, the buried pipe in the buried pipe unit (900) is opened according to the first set rule, and the first buried pipe area is dynamically formed; The surplus electricity from photovoltaic power generation is used to start the air source heat pump (400), and the underground pipe in the underground pipe unit (900) is opened according to the second set rule, dynamically forming the second underground pipe area. The first underground pipe area and the second underground pipe area are diagonally distributed. The first setting rule is to prioritize starting the buried pipe located at the end of the diagonal within the buried pipe unit (900), where the diagonal is any diagonal of the area outline formed by all buried pipes in the buried pipe unit (900); the second setting rule is to prioritize starting the buried pipe closest to the diagonal and furthest from the center of the first buried pipe area.

7. The air source heat pump and ground source heat pump multi-energy regulation method according to claim 6, characterized in that, The first setting rule also includes: The area formed by the underground pipe that has been opened for the ground source heat pump (300) is formed into a first contour area; Obtain the temperature data of the temperature sensor group closest to the center of the first contour area to obtain the soil temperature array of the first contour area; When it is determined that any temperature in the soil temperature array of the first contour area exceeds the high temperature threshold of its corresponding depth, the buried pipe in the buffer that is closest to the first opened buried pipe is activated. When it is determined that all temperatures in the soil temperature array of the first contour area are lower than the low temperature threshold of their corresponding depth, the buried pipe farthest from the first opened buried pipe in the first buried pipe area is closed.

8. The air source heat pump and ground source heat pump multi-energy regulation method according to claim 7, characterized in that, The second setting rule also includes: The underground pipe that has been turned on for use by the air source heat pump (400) forms a second contour area; Obtain the temperature data of the temperature sensor group closest to the center of the second contour area to obtain the soil temperature array of the second contour area; When it is determined that any temperature in the soil temperature array of the second contour area exceeds the high temperature threshold of its corresponding depth, the buried pipe that is furthest from the center of the first buried pipe area in the buffer is activated. When the air source heat pump (400) is turned off, all underground pipes in the second underground pipe area are shut off.

9. The air source heat pump and ground source heat pump multi-energy regulation method according to claim 6, characterized in that, It also includes the following steps: Select the temperature sensor group that is closest to the center point of the diagonal as the monitoring sensor group; Acquire the temperature data set of the monitoring sensor group to obtain the adjacent temperature data set; If any temperature in the adjacent temperature data group exceeds the high temperature threshold of its corresponding depth, the buried pipe in the second buried pipe area that is closest to the center of the first buried pipe area is closed.

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