Automatic temperature control device of ground source heat pump

Abstract

The utility model belongs to the technical field of ground source heat pumps, and particularly relates to an automatic temperature control device of a ground source heat pump, which comprises a land and a buried heat exchanger, the buried heat exchanger is buried in the land, the top of the land is provided with a water pump unit, and the output end and the input end of the water pump unit are respectively provided with a first water pipe and a second water pipe. The end, away from the water pump unit, of the first water pipe and the end, away from the water pump unit, of the second water pipe extend into the underground heat exchanger, an inner cavity of the underground heat exchanger is slidably connected with a partition plate, the partition plate divides the inner cavity of the underground heat exchanger into an upper cavity and a lower cavity, and the upper cavity is formed in the upper portion of the lower cavity. The driving mechanism is used for driving the partition to move vertically. According to the utility model, the water distribution in the underground heat exchanger can be dynamically adjusted according to seasonal changes and actual requirements, so that the heat exchange efficiency is improved, the response time is shortened, and the purpose of quickly adjusting the indoor temperature is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of ground source heat pump technology, specifically relating to an automatic temperature control device for ground source heat pumps. Background Technology

[0002] Ground source heat pump systems, as a highly efficient system for heating and cooling by utilizing geothermal resources, have been widely used globally. They not only utilize geothermal energy for energy conversion and transfer, but also have advantages such as environmental protection, energy saving, and high efficiency. They are one of the important technologies for achieving green, low-carbon, and sustainable development. However, in practical applications, existing ground source heat pump systems have certain limitations in their design.

[0003] Traditional buried heat exchangers typically consist of a fixed structure with a fixed spatial distribution and water flow path, making them unadjustable according to seasonal changes or actual needs. This fixed structure presents significant shortcomings in cold winters or hot summers. To improve heat exchange efficiency, it is necessary to increase the heat exchange area between the soil and water or reduce the water volume. However, current technologies do not provide an effective solution to achieve this goal.

[0004] For example, some ground source heat pump systems improve heat exchange efficiency by increasing the length or number of buried heat exchangers. While this method can improve cooling performance to some extent, it increases installation costs and occupies more land. For urban areas with limited land resources, this is clearly not an ideal solution. Alternatively, increasing the circulating water flow rate can also increase heat exchange efficiency, but this increases pump energy consumption and reduces the overall system's energy efficiency ratio, which is inconsistent with the trend of energy conservation and emission reduction.

[0005] Therefore, a new automatic temperature control device for ground source heat pumps is needed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an automatic temperature control device for a ground source heat pump, which can dynamically adjust the water distribution inside the buried heat exchanger according to seasonal changes and actual needs, so as to improve heat exchange efficiency, shorten response time, and thus achieve the purpose of quickly regulating indoor temperature.

[0007] The specific technical solution adopted by this utility model is as follows:

[0008] An automatic temperature control device for a ground source heat pump includes land and a buried heat exchanger. The buried heat exchanger is buried in the land. A water pump unit is installed on the top of the land. A first water pipe and a second water pipe are respectively installed at the output end and the input end of the water pump unit. The ends of the first water pipe and the second water pipe away from the water pump unit extend into the buried heat exchanger.

[0009] The inner cavity of the buried heat exchanger is slidably connected to a partition plate, which divides the inner cavity of the buried heat exchanger into an upper cavity and a lower cavity, and the upper cavity is located above the lower cavity. The buried heat exchanger is also equipped with a drive mechanism, which is used to drive the partition plate to move up and down.

[0010] The drive mechanism includes a threaded rod rotatably connected to the inner cavity of the buried heat exchanger. The threaded rod is threadedly connected to the partition plate. A motor is installed on the top of the buried heat exchanger, and the output end of the motor passes through the buried heat exchanger and is connected to the threaded rod.

[0011] A solenoid valve is also installed inside the partition, with its upper and lower ends located in the upper and lower cavities, respectively.

[0012] Temperature sensors are installed inside both the upper cavity and the lower cavity. A controller is also installed in the buried heat exchanger or on the ground. The controller is electrically connected to the temperature sensors, solenoid valves, and motor.

[0013] The top and bottom of the partition are both equipped with heat insulation panels.

[0014] A sealing airbag is installed on the periphery of the partition, and an air pump is installed on the top of the land. The air pump is connected to an air pipe, and the end of the air pipe away from the air pump passes through the buried heat exchanger and is connected to the sealing airbag.

[0015] The technical effects achieved by this utility model are as follows:

[0016] This invention can dynamically adjust the water distribution inside the buried heat exchanger according to seasonal changes and actual needs, so as to improve heat exchange efficiency and shorten response time, thereby achieving the purpose of quickly regulating indoor temperature. Its simple, efficient and low-cost features make it compatible with existing ground source heat pump systems without the need for large-scale modification and upgrades. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the land and the buried heat exchanger in this utility model;

[0019] Figure 3 This is a cross-sectional view of the buried heat exchanger in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure between the partition, the sealing airbag, and the heat insulation plate of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Land; 2. Underground heat exchanger; 3. Water pump unit; 4. First water pipe; 5. Second water pipe; 6. Partition plate; 7. Sealing airbag; 8. Upper cavity; 9. Lower cavity; 10. Threaded rod; 11. Motor; 12. Temperature sensor; 13. Heat insulation plate; 14. Air pump; 15. Air pipe; 16. Solenoid valve. Detailed Implementation

[0023] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0024] like Figure 1-4 As shown, an automatic temperature control device for a ground source heat pump includes a land 1 and a buried heat exchanger 2. The buried heat exchanger 2 is buried in the land 1. A water pump unit 3 is installed on the top of the land 1. A first water pipe 4 and a second water pipe 5 are respectively installed at the output end and the input end of the water pump unit 3. The ends of the first water pipe 4 and the second water pipe 5 away from the water pump unit 3 both extend into the buried heat exchanger 2.

[0025] When using this device, the water pump unit 3 can be started, so that the input end of the water pump unit 3 delivers indoor water to the buried heat exchanger 2 and draws out the original water in the buried heat exchanger 2, thereby delivering the water inside the buried heat exchanger 2 to the room for heat exchange. The water inside the buried heat exchanger 2 can be kept at about 15°C. Therefore, in winter, the water inside the buried heat exchanger 2 can generate heat, and in summer, the water inside the buried heat exchanger 2 can generate coolness. This part has become existing technology and will not be described in detail here.

[0026] The inner cavity of the buried heat exchanger 2 is slidably connected with a partition 6, which divides the inner cavity of the buried heat exchanger 2 into an upper cavity 8 and a lower cavity 9. The upper cavity 8 is located above the lower cavity 9. Due to the arrangement of the upper cavity 8 and the lower cavity 9, the water inside the lower cavity 9 is far away from the frozen soil in winter because the upper cavity 8 is close to the upper layer of the soil 1. This makes the water inside the lower cavity 9 hotter, which allows the water pump unit 3 to draw water into the lower cavity 9 for heat exchange, thus achieving a better heat exchange effect.

[0027] In summer, the water inside the lower cavity 9 is further away from the ground and is colder. By pumping the water inside the lower cavity 9 with the water pump unit 3 for heat exchange, a better heat exchange effect can be achieved. The buried heat exchanger 2 is also equipped with a drive mechanism, which is used to drive the partition 6 to move up and down. Through the partition setting, the less water inside the lower cavity 9 can exchange heat with the temperature of the soil 1 more quickly, ensuring the heat exchange effect in the room.

[0028] See attached document Figure 3 A solenoid valve 16 is also installed inside the partition 6. The upper end and the lower end of the solenoid valve 16 are located in the upper cavity 8 and the lower cavity 9, respectively. When the solenoid valve 16 is opened, if there is not enough water in the lower cavity 9, the water in the upper cavity 8 can flow into the lower cavity 9.

[0029] The drive mechanism enables the partition 6 to move up and down. In summer, when the partition 6 moves upward, the space inside the lower cavity 9 increases. Through the solenoid valve 16, some water in the upper cavity 8 is transferred to the lower cavity 9, which increases the amount of water in the lower cavity 9. The water temperature in the upper cavity 8 is higher than that in the lower cavity 9. By mixing the two, the temperature of the water in the lower cavity 9 can be quickly reduced. When the partition 6 moves downward, the amount of water in the partition 6 decreases, allowing the water in the partition 6 to quickly exchange heat with the soil 1.

[0030] In winter, referring to the above description of summer, it can be seen that when the partition 6 moves upward, the water with a higher temperature inside the lower cavity 9 comes into contact with the water with a lower temperature in the upper cavity 8, which can quickly reduce the temperature of the water inside the lower cavity 9. When the partition 6 moves downward, the lower cavity 9 reduces its capacity, thereby allowing less water to quickly exchange heat with the ground 1. The material of the first water pipe 4 and the second water pipe 5 located inside the buried heat exchanger 2 can be a folded flexible hose, so as to avoid the first water pipe 4 and the second water pipe 5 from getting stuck when the partition 6 moves up and down.

[0031] This configuration allows the device to regulate temperature.

[0032] See attached document Figure 3The drive mechanism includes a threaded rod 10 rotatably connected to the inner cavity of the buried heat exchanger 2. The threaded rod 10 is threadedly connected to the partition plate 6. A motor 11 is installed on the top of the buried heat exchanger 2. The output end of the motor 11 passes through the buried heat exchanger 2 and is connected to the threaded rod 10. Temperature sensors 12 are installed inside the upper cavity 8 and the lower cavity 9. A controller is also installed on the buried heat exchanger 2 or the soil 1. The controller is electrically connected to the temperature sensor 12, the solenoid valve 16 and the motor 11. The temperature sensor 12 detects the temperature inside the upper cavity 8 and the lower cavity 9. When it is necessary to adjust the temperature inside the lower cavity 9, the temperature sensor 12 transmits the signal to the controller, and the controller simultaneously controls the solenoid valve 16 and the motor 11, so that the partition plate 6 will not be subject to any resistance when it moves.

[0033] When driven by the motor 11, the threaded rod 10 can be rotated, and through the threaded connection between the threaded rod 10 and the partition plate 6, and through the sliding connection between the partition plate 6 and the inner wall of the buried heat exchanger 2, the partition plate 6 can move up and down by the drive of the threaded rod 10.

[0034] See appendix Figure 4 As shown, heat insulation plates 13 are further provided at the top and bottom of the partition 6. The heat insulation plates 13 can isolate the temperature and minimize the conduction of water temperature in the upper cavity 8 and lower cavity 9. The heat insulation plates 13 are also threadedly connected to the threaded rod 10 and move up and down with the partition 6. The heat insulation plates 13 can be made of ceramic or any other material that can isolate temperature.

[0035] For further details, please refer to the appendix. Figure 4 As shown, a sealing airbag 7 is installed on the periphery of the partition 6, and an air pump 14 is installed on the top of the soil 1. The air pump 14 is connected to an air pipe 15, and the end of the air pipe 15 away from the air pump 14 passes through the buried heat exchanger 2 and is connected to the sealing airbag 7. When the partition 6 needs to move up and down, the air pump 14 can be driven first, so that the air pump 14 absorbs the air inside the sealing airbag 7, thereby preventing the sealing airbag 7 from pressing tightly against the inner wall of the buried heat exchanger 2. Then, the partition 6 can be moved up and down through the threaded rod 10. After moving to the appropriate position, the air pump 14 can be driven again, so that the air pump 14 delivers the gas back to the sealing airbag 7 through the air pipe 15, so that the sealing airbag 7 can reseal the partition 6 against the inner wall of the buried heat exchanger 2.

[0036] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An automatic temperature control device for a ground source heat pump, comprising land (1) and a buried heat exchanger (2), characterized in that: The buried heat exchanger (2) is buried in the soil (1). A water pump unit (3) is installed on the top of the soil (1). A first water pipe (4) and a second water pipe (5) are installed at the output end and the input end of the water pump unit (3), respectively. The ends of the first water pipe (4) and the second water pipe (5) away from the water pump unit (3) both extend into the buried heat exchanger (2). The inner cavity of the buried heat exchanger (2) is slidably connected to a partition (6), which divides the inner cavity of the buried heat exchanger (2) into an upper cavity (8) and a lower cavity (9). The upper cavity (8) is located above the lower cavity (9). A driving mechanism is also installed inside the buried heat exchanger (2), which is used to drive the partition (6) to move up and down.

2. The automatic temperature control device for a ground source heat pump according to claim 1, characterized in that: The drive mechanism includes a threaded rod (10) rotatably connected to the inner cavity of the buried heat exchanger (2). The threaded rod (10) is threadedly connected to the partition plate (6). A motor (11) is installed on the top of the buried heat exchanger (2). The output end of the motor (11) passes through the buried heat exchanger (2) and is connected to the threaded rod (10).

3. The automatic temperature control device for a ground source heat pump according to claim 2, characterized in that: A solenoid valve (16) is also installed inside the partition (6), with the upper end and lower end of the solenoid valve (16) located in the upper cavity (8) and lower cavity (9), respectively.

4. The automatic temperature control device for a ground source heat pump according to claim 3, characterized in that: Temperature sensors (12) are installed inside both the upper cavity (8) and the lower cavity (9). A controller is also installed on the buried heat exchanger (2) or the soil (1). The controller is electrically connected to the temperature sensor (12), the solenoid valve (16) and the motor (11).

5. The automatic temperature control device for a ground source heat pump according to claim 2, characterized in that: The top and bottom of the partition (6) are provided with heat insulation plates (13).

6. The automatic temperature control device for a ground source heat pump according to claim 2, characterized in that: A sealing airbag (7) is installed on the periphery of the partition (6), and an air pump (14) is provided on the top of the land (1). The air pump (14) is connected to an air pipe (15), and the end of the air pipe (15) away from the air pump (14) passes through the buried heat exchanger (2) and is connected to the sealing airbag (7).

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