Heating and summer heat compensation system of ground source heat recovery heat storage pump

Abstract

The utility model relates to the technical field of geothermal energy utilization, and provides a heating and summer heat compensation system of a ground source thermal recovery heat storage pump, which comprises a geothermal hole, the geothermal hole comprises an upper water chamber, an outer water chamber and a lower water chamber, the upper water chamber and the lower water chamber are arranged at an interval along the height direction, the outer water chamber is distributed on the periphery of the upper water chamber and the lower water chamber, and the lower water chamber is communicated with the geothermal hole. The outer water chamber is communicated with the lower portion of the upper water chamber and communicated with the lower portion of the lower water chamber. Meanwhile, a heat exchanger is additionally arranged, heat of a heated unit is absorbed in summer, additional supply sources are added for the geothermal holes, and the indoor free refrigeration effect can be achieved. Through the technical scheme, the problems that in the related technology, the number of ground source wells is large, the occupied area is large, single-season heating is limited, the heat storage pressure of the geothermal holes is continuously reduced, and energy consumption is low are solved. And the technical problems of temperature reduction, insufficient heat supply capability, serious attenuation problem and shortened service life are finally caused by long circulation period and difficulty in timely supplement of a supply source.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of geothermal energy utilization technology, specifically to a ground source heat extraction and storage heat pump heating and summer heat compensation system. Background Technology

[0002] In the current field of geothermal heating, traditional U-tube geothermal wells are widely used as important heat exchange components. In urban areas, land resources are becoming increasingly scarce and expensive, and traditional U-tube geothermal wells, due to their large number, often require a significant amount of land. From a failure rate perspective, the structure of traditional U-tube geothermal wells is relatively complex, and during long-term operation, they are prone to failures such as pipe rupture and blockage due to various factors, including changes in geological conditions.

[0003] Meanwhile, traditional U-shaped geothermal wells also suffer from heat loss. As the service life increases, their heat exchange efficiency gradually decreases. This is because the heat exchange between the underground rock and soil and the geothermal well is unbalanced, causing changes in the temperature field of the rock and soil, which in turn affects the continuous heat exchange capacity of the geothermal well. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a geothermal heat extraction and storage pump heating and summer heat compensation system. In winter, heating is provided through geothermal wells, and in summer, the geothermal wells are supplemented with heat to ensure timely replenishment of the geothermal wells, achieve a balance between heat extraction and heat supplementation, improve the heating capacity of the geothermal wells in winter, extend the service life of the geothermal wells, and solve the technical problems of large number of geothermal wells, large area occupied, high failure rate and serious attenuation in related technologies.

[0005] According to one aspect, at least one embodiment of this disclosure provides a ground source heat extraction and storage heat pump heating and summer heat compensation system, comprising: a geothermal hole, the geothermal hole including an upper water chamber, an outer water chamber and a lower water chamber, wherein the upper water chamber and the lower water chamber are arranged at intervals along the height direction, the outer water chamber is distributed on the outer periphery of the upper water chamber and the lower water chamber, the outer water chamber is connected to the lower part of the upper water chamber and the lower part of the lower water chamber.

[0006] For example, in the ground source heat extraction and storage heat pump heating and summer heat compensation system provided in at least one embodiment of this disclosure, the system further includes: a first cylinder, which is disposed between the upper water chamber and the outer water chamber, and the side wall of the first cylinder has a channel for water to pass through;

[0007] A second cylindrical component is disposed between the outer water chamber and the lower water chamber, and the lower part of the second cylindrical component has a channel for water to pass through.

[0008] For example, in the ground source heat extraction and storage heat pump heating and summer heat compensation system provided in at least one embodiment of this disclosure, a partition is further included, wherein the partition is disposed between the upper water chamber and the lower water chamber for separating the upper water chamber and the lower water chamber;

[0009] A pump body is disposed on the partition and extends into the drain chamber for drawing water from the drain chamber.

[0010] For example, in the ground source heat extraction and storage pump heating and summer heat compensation system provided in at least one embodiment of this disclosure, the water chamber has a water inlet and further includes:

[0011] An inner sleeve is provided on the pump body for receiving water drawn from the lower water chamber by the pump body, and the inner sleeve has a water outlet.

[0012] A heating unit is used to receive heat from the geothermal vent or to transfer heat to the geothermal vent.

[0013] For example, in the ground source heat extraction and storage heat pump heating and summer heat compensation system provided in at least one embodiment of this disclosure, a heat exchanger is also included;

[0014] The first heat exchange pipeline has its two ends connected to the outlet and the inlet respectively, and its middle section passes through the heat exchanger.

[0015] For example, in the ground source heat extraction and storage heat pump heating and summer heat compensation system provided in at least one embodiment of this disclosure, a second heat exchange pipeline is further included, wherein the second heat exchange pipeline passes through the heat exchanger and the heat receiving unit in sequence to form a loop;

[0016] A first circulation pump is installed on the second heat exchange pipeline, specifically in the section where water flows through the heated unit but does not flow into the heat exchanger, and is used to control the water flow rate of the second heat exchange pipeline.

[0017] For example, in the ground source heat extraction and storage heat pump heating and summer heat compensation system provided in at least one embodiment of this disclosure, an evaporator is also included;

[0018] The third heat exchange pipeline has its two ends connected to the outlet and the inlet respectively, and its middle section passes through the evaporator, which is used to cool the water in the third heat exchange pipeline.

[0019] For example, in the ground source heat extraction and storage heat pump heating and summer heat compensation system provided in at least one embodiment of this disclosure, a condenser is also included;

[0020] The fourth heat exchange pipeline passes through the condenser and the evaporator in sequence;

[0021] The evaporator is used to evaporate and vaporize the water in the fourth heat exchange pipeline;

[0022] The condenser is used to condense and liquefy the gaseous water in the fourth heat exchange pipeline.

[0023] For example, in the ground source heat extraction and storage heat pump heating and summer heat compensation system provided in at least one embodiment of this disclosure, a compressor is also included, which is installed on the fourth heat exchange pipeline and is used to heat and pressurize the gaseous water passing through the evaporator.

[0024] An expansion valve is provided on the fourth heat exchange pipeline for de-cooling and de-pressurizing the liquid water passing through the condenser.

[0025] For example, in the ground source heat extraction and storage heat pump heating and summer heat compensation system provided in at least one embodiment of this disclosure, a fifth heat exchange pipeline is further included, wherein the fifth heat exchange pipeline passes sequentially through the condenser and the heating unit, and the condenser is used to heat the water in the fifth heat exchange pipeline.

[0026] The second circulation pump is installed on the fifth heat exchange pipeline and is located in the section where water flows through the heating unit but does not flow into the condenser, and is used to control the water flow rate of the fifth heat exchange pipeline.

[0027] The beneficial effects of the embodiments disclosed herein are as follows:

[0028] In this disclosure, heating is provided through geothermal wells in winter and supplemented with heat in summer, ensuring timely replenishment of the wells and achieving a balance between heat extraction and supplementation. This improves the heating capacity of the geothermal wells, extends their service life, and solves the technical problems of numerous geothermal wells, large land area, high failure rate, insufficient heating capacity, and severe attenuation in related technologies. The geothermal wells consist of an upper water chamber, an outer water chamber, and a lower water chamber. The upper and lower water chambers are spaced apart along the vertical direction, with the outer water chamber surrounding them. This layout design allows the circulating water for heat extraction and storage to form a circulation path between the three water chambers. The return circulating water output from the heat pump first enters the upper water chamber, flowing downwards to absorb heat from the outer water chamber; due to the interconnection, it overflows into the outer water chamber. The outer water chamber serves as the main heat exchange area, where circulating water flows downwards, exchanging heat with underground rock, soil, and water through the outer wall of the outer water chamber to achieve heat energy extraction or storage. Afterwards, the circulating water that has completed heat exchange flows back to the drain chamber and is then pumped out by the pump body to provide heating.

[0029] This device is suitable for various scenarios requiring geothermal heating, such as centralized heating in urban residential communities. In cities, where land resources are scarce, traditional geothermal energy collection methods occupy large areas and operate on a single-season basis. The pressure of the geothermal wells continuously decreases, while the replenishment source has a long cycle, making timely replenishment difficult. This ultimately leads to temperature drops, insufficient heating capacity, severe degradation problems, and a shortened service life. This device, however, requires fewer wells, effectively saving space. Furthermore, it replenishes the geothermal wells during the summer, ensuring timely replenishment and achieving a balance between heat collection and replenishment, while also providing free cooling indoors. In renovation projects of older residential areas, for geothermal wells that have lost their heat storage capacity, this device can be strategically placed to achieve a balance between heat collection and replenishment in the geothermal heating system, extending the service life of the wells. In addition, for commercial complexes such as shopping malls and office buildings, which have high requirements for the stability and continuity of energy supply, this device can meet their needs with its stable heat collection and supply capabilities. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the ground source heat extraction and storage heat pump heating and summer heat compensation system disclosed in this paper.

[0032] Figure 2 for Figure 1 A schematic diagram of one embodiment (for use in winter);

[0033] Figure 3 for Figure 1 Another embodiment of the structure is shown in the diagram (for summer use);

[0034] Figure 4 This is a schematic diagram of the structure of the first cylindrical component;

[0035] Figure 5 This is a schematic diagram of the dual-cycle mode thermal compensation system in another embodiment.

[0036] In the diagram: 1. Geothermal vent; 101. Upper water chamber; 102. Lower water chamber; 102-1. First lower water chamber; 102-2. Second lower water chamber; 103. Lower water chamber; 104. Outlet; 105. Inlet; 2. First cylinder; 3. Second cylinder; 4. Isolation flange; 5. Pump body; 6. Inner sleeve; 7. Heating unit; 8. Heat exchanger; 9. First heat exchange pipeline; 10. Second heat exchange pipeline; 11. First circulating pump; 12. Evaporator; 13. Third heat exchange pipeline; 14. Condenser; 15. Fourth heat exchange pipeline; 16. Compressor; 17. Expansion valve; 18. Fifth heat exchange pipeline; 19. Second circulating pump; 20. Valve. Detailed Implementation

[0037] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0038] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0039] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0040] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0042] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] like Figures 1-4 As shown, this illustrates the ground-source heat recovery and storage heat pump heating and summer heat compensation system of this disclosure. In some examples, the geothermal well 1 consists of an upper water chamber 101, an outer water chamber 102, and a lower water chamber 103. The upper water chamber 101 and the lower water chamber 103 are spaced apart along the height direction, and the outer water chamber 102 surrounds their perimeter. This layout design allows the circulating water for heat recovery and storage to form a circulation path between the three water chambers. The return circulating water output by the heat pump first enters the upper water chamber 101, and due to the connection, the circulating water in the upper water chamber 101 overflows into the outer water chamber 102. The outer water chamber 102 serves as the main heat exchange area, where the circulating water flows from top to bottom, exchanging heat with the underground rock, soil, and water body through the outer wall of the outer water chamber 102 to achieve heat energy collection or storage. Afterward, the circulating water that has completed heat exchange flows back to the lower water chamber 103 and is then pumped out by the pump body 5 to achieve heating or cooling.

[0044] This device is suitable for various scenarios requiring geothermal heating, such as centralized heating in urban residential communities. In cities, where land resources are scarce, traditional geothermal energy collection methods require large land areas and operate on a single-season basis. This leads to a continuous decline in the heat storage pressure of the geothermal vents, while the replenishment source has a long cycle, making timely replenishment difficult. Ultimately, this results in temperature drops, insufficient heating capacity, severe degradation problems, and a shortened service life. This device, however, requires fewer vents, effectively saving space. Furthermore, it replenishes the geothermal vents during the summer, ensuring timely replenishment and achieving a balance between heat collection and replenishment. In renovation projects of older residential areas, it can utilize limited land resources to achieve a balance between heat collection and replenishment for geothermal heating systems that have lost their heat storage capacity, extending the service life of the vents. In addition, for commercial complexes such as shopping malls and office buildings, which have high requirements for the stability and continuity of energy supply, this device can meet their needs with its stable heat collection and supply capabilities.

[0045] Preferably, the outer water chamber 102 is filled with homogeneous angular gravel of good purity to increase the porosity of the gravel filling, ensuring smooth and unobstructed circulation of the circulating water within the outer water chamber 102, and facilitating sufficient and efficient heat exchange with the underground rock, soil, and water through the pore walls. Compared to the disadvantages of traditional U-shaped geothermal wells, which require a large number of wells and occupy a large area, this device can achieve efficient geothermal energy collection and utilization on limited land, making it more suitable for the current situation of scarce urban land resources. The circulating water flows within a relatively closed and well-designed water chamber system, reducing interference from external factors on the circulation, increasing the heat replenishment process, and making the entire geothermal heating and heat exchange process more stable and reliable, ensuring a continuous supply of heat energy.

[0046] In some examples, the first cylinder 2 and the second cylinder 3 are preferably made of a corrosion-resistant, high-strength, and thermally conductive material, and are preferably cylindrical in shape. The first cylinder 2 is located between the upper water chamber 101 and the outer water chamber 102, and the first channel on its side wall allows the returning circulating water to overflow smoothly from the upper water chamber 101 to the outer water chamber 102. The second cylinder 3 is located between the outer water chamber 102 and the lower water chamber 103, and the second channel at the bottom is responsible for smoothly introducing the circulating water after heat exchange from the outer water chamber 102 into the lower water chamber 103, preparing for the subsequent pressurization and pumping out by the pump body 5, and ensuring the smoothness of the entire water circulation path.

[0047] In some examples, the partition 4 can be an isolation flange, typically made of metal such as stainless steel, which offers good corrosion resistance and sealing. Its shape is generally disc-shaped, and its size depends on the specifications of the entire geothermal heating heat exchange system, preventing leakage and heat loss. The pump body 5 is often selected for its corrosion resistance, low energy consumption, and adaptability to complex underground environments; submersible centrifugal pumps are common examples. Its casing is made of corrosion-resistant materials, and internal components such as the impeller are optimized to meet the requirements of high-efficiency pumping. The power and flow rate of the pump body 5 are selected based on the scale of the system and actual heating needs. For example, a small residential system may be equipped with a smaller, moderately flowable pump body 5, while a large commercial building system requires a high-power, high-flow-rate pump body 5.

[0048] The main function of the isolation flange is to separate the upper water chamber 101 and the lower water chamber 103, preventing direct mixing of water between the two chambers and ensuring that the circulating water flows along a preset path. The pump body 5 is mounted on the isolation flange and extends into the lower water chamber 103. When the pump body 5 is started, the impeller rotates at high speed, generating centrifugal force in the water within the lower water chamber 103, thereby drawing the water out. The drawn water is then transported through subsequent pipelines to equipment such as heat pumps for heating or cooling. In this process, the pump body 5 provides the power for the flow of circulating water, maintaining the normal operation of the entire geothermal energy circulation system.

[0049] In some examples, the inner sleeve 6 is typically made of a material with good thermal conductivity and strong corrosion resistance, such as copper or a special alloy pipe. Its diameter is designed according to the water flow requirements of the entire system, and it preferably has good insulation measures, such as adding an insulation coating to the outer wall to reduce heat loss. The length of the inner sleeve 6 must be adapted to the pump body 5 and the structure of the entire device to ensure accurate delivery of the water pumped by the pump body 5 to the designated location. The heating unit 7 comes in various forms, such as residential buildings, office buildings, schools, and other buildings requiring heating.

[0050] The inner sleeve 6 connects to the pump body 5. The pump body 5 draws water from the lower water chamber 103 after heat exchange, and this water enters the inner sleeve 6. The inner sleeve 6 then transports the water to subsequent system components.

[0051] During winter heating, the heating unit 7 obtains heat from the geothermal vent 1. In summer, the heating unit 7 transfers heat to the geothermal vent 1 and stores the heat underground through circulating water, thus achieving heat transfer and storage, thereby providing a source of replenishment for the geothermal vent and achieving a cooling effect indoors in summer.

[0052] Some examples demonstrate usage scenarios in summer, such as Figure 3 As shown, the details are as follows:

[0053] In practical applications, heat exchangers (8) come in various types, with plate heat exchangers (8) and shell-and-tube heat exchangers (8) being the most common. Plate heat exchangers (8) consist of a series of corrugated metal plates stacked together, transferring heat through contact between the plates. They are characterized by high heat exchange efficiency and a small footprint. Shell-and-tube heat exchangers (8), on the other hand, are composed of a shell, tube bundles, and other components, and are suitable for heat exchange scenarios involving high temperature, high pressure, and high flow rates. Heat exchangers (8) are often made of materials with good thermal conductivity and corrosion resistance, such as stainless steel and copper alloys, to adapt to the characteristics of geothermal circulating water.

[0054] The heat exchanger 8 is a key component for heat exchange. Hot (or cold) water from the outlet 104 of the inner sleeve 6 enters one channel of the heat exchanger 8, while the medium to be heated (or cooled) flows in the other channel. Through the heat transfer walls of the heat exchanger 8, heat is transferred from the high-temperature fluid to the low-temperature fluid, thus achieving heat transfer. In winter, the geothermal circulating water transfers heat to the heating unit 7; in summer, the opposite occurs, with heat in the heating unit 7 being transferred to the geothermal circulating water and then stored underground.

[0055] The first heat exchange pipeline 9 connects the outlet 104 of the inner sleeve 6 and the inlet 105 of the upper water chamber 101, forming a complete circulation loop. Driven by the pump body 5, the circulating water flows out from the lower water chamber 103 through the inner sleeve 6, enters the heat exchanger 8 through the first heat exchange pipeline 9 for heat exchange, and then returns to the upper water chamber 101 to complete one cycle.

[0056] In some examples, the first circulation pump 11 commonly uses electrically operated or manually operated regulating valves. Electrically operated regulating valves can automatically adjust according to system parameters such as temperature and pressure, achieving precise control; manually operated regulating valves, on the other hand, require manual adjustment of the opening degree, resulting in relatively lower costs. The valve body is typically made of metal, and the seals are made of materials such as rubber or polytetrafluoroethylene (PTFE) to ensure good sealing and regulating performance.

[0057] The second heat exchange pipe 10 forms a loop with the heating unit 7 and the heat exchanger 8. When the heating unit 7 acquires high heat, the water in the second heat exchange pipe 10 flows under the action of a thermosiphon or pump. The water absorbs heat as it flows through the heating unit 7, becoming high-temperature water, and then enters the heat exchanger 8 carrying the heat. Inside the heat exchanger 8, the high-temperature water exchanges heat with the water in the first heat exchange pipe 9, transferring heat to the water in the first heat exchange pipe 9. This high-temperature water then flows into the upper water chamber 101 and then into the outer water chamber 102, thereby storing the heat in the outer water chamber 102, completing the heat transfer and storage process. The first circulation pump 11 is installed on the second heat exchange pipe 10. By adjusting the opening of the first circulation pump 11, the flow rate of water in the second heat exchange pipe 10 can be changed, preventing the heating unit 7 from absorbing heat with cold water in summer, forming condensate, and causing dampness in the building's interior.

[0058] Some examples demonstrate usage scenarios in winter, such as Figure 2 As shown, the details are as follows:

[0059] Evaporators 12 typically employ shell-and-tube or plate structures. Shell-and-tube evaporators 12 consist of a shell, heat exchange tube bundles, etc., with refrigerant flowing inside the shell and water requiring cooling flowing inside the tube bundles. The heat exchange tube bundles are usually made of copper to ensure good thermal conductivity. Plate evaporators 12 are composed of a series of corrugated metal plates stacked together, achieving heat transfer through contact between the plates. They are characterized by their compact structure and high heat exchange efficiency. The material of the evaporator 12 can be selected based on its operating environment and working medium, generally requiring good corrosion resistance and thermal conductivity. Low-temperature resistant and corrosion-resistant tubing is usually chosen.

[0060] The third heat exchange pipeline 13 connects the outlet 104 of the inner sleeve 6 and the inlet 105 of the upper water chamber 101, forming a circulation loop. The pump body 5 drives water to flow through the pipeline. Water flowing from the outlet 104 of the inner sleeve 6 enters the third heat exchange pipeline 13 and is cooled as it passes through the evaporator 12. The cooled water then returns to the upper water chamber 101 through the pipeline and subsequently enters the outer water chamber 102. Throughout the circulation process, the third heat exchange pipeline 13 serves to transport water and facilitate its participation in the cooling process, ensuring that the cooled water can re-enter the geothermal vent 1 to participate in subsequent heat exchange stages.

[0061] In some examples, in this device, the evaporator 12 not only cools the water in the third heat exchange pipe 13, but also evaporates and vaporizes the water in the fourth heat exchange pipe 15. When the water in the fourth heat exchange pipe 15 flows through the evaporator 12, it absorbs heat and evaporates into gaseous water. The gaseous water from the evaporator 12 enters the condenser 14 through the fourth heat exchange pipe 15. In the condenser 14, the gaseous water releases heat and condenses into liquid water. The fourth heat exchange pipe 15 connects the condenser 14 and the evaporator 12, forming a closed loop. In this loop, water absorbs heat and evaporates in the evaporator 12, then releases heat and condenses in the condenser 14, thus repeating the cycle. The fourth heat exchange pipe 15 ensures a stable flow of water between the condenser 14 and the evaporator 12, allowing heat to be continuously transferred between the two devices and maintaining the heat exchange cycle of the entire system.

[0062] In some examples, the compressor 16 is mainly of the piston, screw, and scroll types. Common expansion valves 17 include thermostatic expansion valves 17 and electronic expansion valves 17. The valve body is generally made of copper, which has good corrosion resistance and regulating performance.

[0063] When gaseous water flows out of evaporator 12, it is in a low-temperature, low-pressure gaseous state and enters compressor 16. Compressor 16 compresses the gaseous water, transforming it from a low-temperature, low-pressure gaseous state into a high-temperature, high-pressure gaseous state, which then enters condenser 14. In condenser 14, the high-temperature, high-pressure gaseous water more easily transfers heat to the external cooling medium, thereby achieving the condensation and liquefaction process more efficiently and providing power for the heat cycle of the entire system.

[0064] The liquid water, after being condensed and liquefied in condenser 14, still maintains relatively high pressure and temperature, remaining in a high-pressure, medium-temperature liquid state. The expansion valve 17 depressurizes and cools the liquid water. As the liquid water passes through expansion valve 17, the pressure drops rapidly due to the valve's throttling effect, and the temperature of the liquid water also decreases accordingly, transforming the high-pressure, medium-temperature liquid water into a low-temperature, ultra-low-pressure liquid water, which then enters evaporator 12. In evaporator 12, the low-temperature, ultra-low-pressure liquid water can more effectively absorb heat, achieving evaporation and vaporization.

[0065] In some examples, condenser 14 is responsible for condensing and liquefying gaseous water throughout the system, a process that releases a significant amount of heat. Water in the fifth heat exchange pipe 18 absorbs the heat released by condenser 14 as it flows through it, thus increasing its temperature. Specifically, gaseous water exchanges heat with the water in the fifth heat exchange pipe 18 within condenser 14, transferring heat from the gaseous water to the water in the fifth heat exchange pipe 18, raising its temperature. The heated water then enters the heating unit 7, providing heat to the heating unit 7.

[0066] The second circulation pump 19 is installed on the fifth heat exchange pipeline 18, and its main function is to control the water flow rate of the fifth heat exchange pipeline 18 according to actual needs. When the building's heating demand changes, the water flow rate can be changed by adjusting the opening of the second circulation pump 19.

[0067] exist Figure 1 In the process, the connection between the first heat exchange pipeline 9 and the fifth heat exchange pipeline 18 can be adjusted by valves to meet the connection requirements. Figure 1 The diagram shows a connected state. Figure 2 and Figure 3 The middle section displays independent states under different usage scenarios. Meanwhile, in... Figure 2 and Figure 3 The image shows the positions of the first circulation pump 11 and the second circulation pump 19. The different serial numbers are only for easy reading and identification. Both usage scenarios can share a single circulation pump, for example... Figure 1 As shown.

[0068] In parallel embodiments, such as Figure 5 As shown, another structure for the geothermal vent 1 is provided, with water flow divided into a dual circulation mode. See reference [link / reference needed] for details. Figure 5 Taking the summer cycle as an example, the outer water chamber 102, as the main heat exchange area, is divided into the first outer water chamber 102-1 and the second outer water chamber 102-2.

[0069] The upper water chamber 101 is connected to the inner sleeve 6. Water for the heating unit 7 flows into the upper water chamber 101 through the inlet 105 and flows downward to its bottom. In this structure, the upper water chamber 101 is relatively high, and the water flows downward to absorb heat from the first outer water chamber 102-1. The circulating water that has completed heat exchange flows back into the inner sleeve 6 and flows upward along the inner sleeve 6, realizing external circulation.

[0070] Meanwhile, the first external water chamber 102-1 is connected to the pump body 5, the upper part of the second external water chamber 102-2 is connected to the upper part of the first external water chamber 102-1, and the lower part of the second external water chamber 102-2 is connected to the lower water chamber 103. The first external water chamber 102-1, the second external water chamber 102-2, and the lower water chamber 103 form a cycle. Specifically, the first external water chamber 102-1 is the main heat exchange area. Water flows upward in the first external water chamber 102-1 and flows into the second external water chamber 102-2 on one side. It continues to flow downward along the second external water chamber 102-2, exchanging heat with underground rock, soil, and water to achieve heat energy collection or storage. Water then flows into the lower water chamber 103 at the bottom of the second external water chamber 102-2. The pump body 5 is installed in the lower water chamber 103. The water flowing into the lower water chamber 103 is pumped to the first external water chamber 102-1 by the pump body 5, realizing the internal circulation of the geothermal hole 1.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A ground-source heat extraction and storage heat pump heating and summer heat compensation system, characterized in that, include: A geothermal vent (1) includes an upper water chamber (101), an outer water chamber (102), and a lower water chamber (103). The upper water chamber (101) and the lower water chamber (103) are arranged at intervals along the height direction. The outer water chamber (102) is distributed around the upper water chamber (101) and the lower water chamber (103). The outer water chamber (102) is connected to the lower part of the upper water chamber (101) and the lower part of the lower water chamber (103).

2. The ground source heat extraction and storage pump heating and summer heat compensation system according to claim 1, characterized in that, Also includes: The first cylindrical component (2) is disposed between the upper water chamber (101) and the outer water chamber (102). The side wall of the first cylindrical component (2) has a channel for water to pass through. The interior of the first cylindrical component (2) is the upper water chamber (101), and the exterior is the outer water chamber (102). The second cylindrical component (3) is disposed between the outer water chamber (102) and the lower water chamber (103). The lower part of the second cylindrical component (3) has a channel for water to pass through. The interior of the second cylindrical component (3) is the lower water chamber (103), and the exterior is the outer water chamber (102).

3. The ground source heat extraction and storage pump heating and summer heat compensation system according to claim 2, characterized in that, The aforementioned ground source heat extraction and storage pump heating and summer heat compensation system also includes: A partition (4) is disposed between the upper water chamber (101) and the lower water chamber (103) to separate the upper water chamber (101) and the lower water chamber (103); Pump body (5), which is disposed on the partition (4) and extends into the lower water chamber (103), is used to draw water from the lower water chamber (103) and guide the water out of the upper water chamber (101).

4. The ground source heat extraction and storage pump heating and summer heat compensation system according to claim 3, characterized in that, The water chamber (101) has a water inlet (105), and the ground source heat extraction and storage pump heating and summer heat compensation system further includes: Inner sleeve (6), the inner sleeve (6) is disposed on the pump body (5) for receiving water in the lower water chamber (103) drawn by the pump body (5), the inner sleeve (6) has an outlet (104); Heating unit (7) is used to exchange heat with the geothermal hole (1).

5. The ground source heat extraction and storage heat pump heating and summer heat compensation system according to claim 4, characterized in that, The aforementioned ground source heat extraction and storage pump heating and summer heat compensation system also includes: Heat exchanger (8); The first heat exchange pipeline (9) is connected to the outlet (104) and the inlet (105) at both ends, and passes through the heat exchanger (8) in the middle.

6. The ground source heat extraction and storage heat pump heating and summer heat compensation system according to claim 5, characterized in that, The aforementioned ground source heat extraction and storage pump heating and summer heat compensation system also includes: The second heat exchange pipeline (10) passes through the heat exchanger (8) and the heating unit (7) in sequence to form a loop; A first circulation pump (11) is installed on the second heat exchange pipeline (10) and located where water flows through the heated unit (7). The first circulation pump (11) is used to provide power for the water circulation of the second heat exchange pipeline (10).

7. The ground source heat extraction and storage heat pump heating and summer heat compensation system according to claim 4, characterized in that, Also includes: Evaporator (12); The third heat exchange pipeline (13) is connected to the outlet (104) and the inlet (105) at both ends, and passes through the evaporator (12) in the middle. The evaporator (12) is used to release heat and cool the water in the third heat exchange pipeline (13).

8. The ground source heat recovery and storage pump heating and summer heat compensation system according to claim 7, characterized in that, Also includes: Condenser (14); The fourth heat exchange pipe (15) passes through the condenser (14) and the evaporator (12) in sequence; The evaporator (12) is used to evaporate and vaporize the water in the fourth heat exchange pipeline (15) to absorb heat; The condenser (14) is used to condense and liquefy the gaseous water in the fourth heat exchange pipeline (15).

9. The ground source heat extraction and storage pump heating and summer heat compensation system according to claim 8, characterized in that, Also includes: The compressor (16) is installed on the fourth heat exchange pipeline (15) for heating and pressurizing the gaseous water passing through the evaporator (12); An expansion valve (17) is provided on the fourth heat exchange pipeline (15) for de-cooling and depressurizing the liquid water passing through the condenser (14).

10. The ground source heat recovery and storage pump heating and summer heat compensation system according to claim 9, characterized in that, Also includes: The fifth heat exchange pipe (18) passes through the condenser (14) and the heating unit (7) in sequence. The condenser (14) is used to heat the water in the fifth heat exchange pipe (18). The second circulation pump (19) is installed on the fifth heat exchange pipeline (18) and located where water flows through the heating unit (7), and is used to provide power for the water circulation of the fifth heat exchange pipeline (18).

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