Shallow geothermal energy double-U-shaped heat exchange device

Abstract

The invention relates to the technical field of heat exchange devices, in particular to a shallow geothermal energy double-U-shaped heat exchange device which comprises a heat exchanger and a pipeline, the pipeline is mounted above the heat exchanger, a heat exchange mechanism is arranged in the heat exchanger and comprises a quick release unit and a filter unit, the quick release unit is mounted in the heat exchanger, and the filter unit is mounted in the heat exchanger. And the filtering unit is mounted in the pipeline. According to the shallow geothermal energy double-U-shaped heat exchange device, by installing the quick disassembly unit, when a heat exchange pipe needs to be quickly disassembled and maintained, external connecting rods penetrate through the interiors of the connecting blocks to connect the two connecting blocks, so that the connecting blocks are driven by the connecting rods to move towards the two sides, and then the connecting blocks drive special-shaped blocks to move towards the outer side; and a telescopic column is retracted into a telescopic cylinder, so that a connecting spring is recovered, contact locking of a clamping block is relieved, quick disassembly and replacement of a heat exchange pipe can be completed, and the convenience of the device is improved.

Description

A shallow geothermal double U-shaped heat exchanger Technical Field

[0001] This invention relates to the field of heat exchange device technology, specifically to a shallow geothermal double U-shaped heat exchange device. Background Technology

[0002] Shallow geothermal energy, as a clean and renewable energy source, relies on heat exchange devices for energy exchange. The double-U heat exchange structure is widely used in building heating and cooling systems due to its superior heat exchange efficiency. Existing shallow geothermal double-U heat exchange devices typically include a heat exchanger and heat transfer pipes. The heat exchanger contains core heat exchange tubes for heat exchange, while the pipes are responsible for transporting the working fluid.

[0003] However, existing devices have revealed significant drawbacks during long-term use: heat exchange tubes, as core heat exchange components, are prone to heat exchange efficiency degradation due to impurities, corrosion, or scaling in the geological environment, requiring periodic disassembly, maintenance, or replacement. Traditional heat exchange tubes are mostly installed inside the heat exchanger using bolts, welding, or other fixing methods. Disassembly requires specialized tools to remove the fasteners one by one, which is cumbersome and time-consuming, especially in confined underground installation spaces, resulting in extremely low maintenance efficiency and significantly increasing operation and maintenance costs. To address these issues, existing technologies have not yet proposed a solution that can simultaneously achieve rapid disassembly and assembly of heat exchange tubes and efficient filtration of the working fluid, which restricts the ease of maintenance and operational stability of shallow geothermal heat exchange devices. There is an urgent need for a shallow geothermal heat exchange device with optimized disassembly, assembly, and filtration structures to overcome the current technological bottlenecks. Summary of the Invention

[0004] The purpose of this invention is to provide a shallow geothermal double U-shaped heat exchange device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a shallow geothermal double U-shaped heat exchange device, comprising a heat exchanger and a pipe, wherein the pipe is installed above the heat exchanger, and a heat exchange mechanism is provided inside the heat exchanger, the heat exchange mechanism including a quick-release unit and a filter unit, wherein the quick-release unit is installed inside the heat exchanger, and the filter unit is installed inside the pipe; the quick-release unit includes a mounting plate, the mounting plate being disposed inside the heat exchanger, and a heat exchange tube being disposed inside the heat exchanger, wherein a quick-release ring is provided on the outer surface of the heat exchange tube, and a fixing post is fixedly connected to the side of the quick-release ring, the other end of the fixing post being... A locking block is fixedly connected to the mounting plate. A locking housing is fixedly connected to the side of the mounting plate. A fixing block is fixedly connected to the inside of the locking housing. A telescopic cylinder is provided on the side of the fixing block. A telescopic column is movably connected to the inside of the telescopic cylinder. A connecting spring is provided on the outer surface of the telescopic column. A shaped block is fixedly connected to the other end of the telescopic cylinder. A slider is fixedly connected to the side of the shaped block. A fixing frame is fixedly connected to the inside of the locking housing. A sliding rod is provided on the inner side of the fixing frame. A connecting groove is opened on the top of the locking housing. A limit rod is provided inside the connecting groove. A connecting block is movably connected to the outer surface of the limit rod.

[0006] Preferably, the connecting block is fixedly connected to the top of the irregular block through the connecting groove, and the connecting block is at the same horizontal height.

[0007] Preferably, one side of the irregularly shaped block is an inclined surface, and the bottom of the card block is an inclined surface.

[0008] Preferably, the filter unit includes a filter cover, which is movably connected to the inside of the pipe. The filter cover has a drain hole inside and a disassembly handle is fixedly connected inside the filter cover.

[0009] Preferably, the heat exchanger is provided with a support base at the bottom, the support base has a buffer groove inside, the buffer groove is provided with a buffer spring, the top of the buffer spring is fixedly connected to a buffer plate, and the top of the buffer plate is fixedly connected to the bottom of the heat exchanger.

[0010] Preferably, the outer surface of the filter cover is provided with a sealing rubber ring, which is tightly fitted to the inner wall of the pipe, and the inner wall of the filter cover is provided with a multi-layer filter structure, consisting of a coarse filter, an activated carbon filter, and a precision filter in sequence from the inlet to the outlet.

[0011] Preferably, the heat exchanger is equipped with a temperature sensor, which is symmetrically distributed on the liquid inlet and liquid outlet sides of the heat exchange tube. The top of the heat exchanger is equipped with a temperature display screen, which is electrically connected to the temperature sensor.

[0012] Preferably, the inner surface of the quick-release ring is provided with an anti-slip pad, the anti-slip pad is in close contact with the outer surface of the heat exchange tube, the fixing post and the quick-release ring are integrally formed, and the top of the locking block is an arc-shaped transition structure.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The shallow geothermal double U-shaped heat exchange device, through the design of the quick-release unit's locking block and the inclined surface of the irregular block, allows the heat exchange tube to automatically lock by its own gravity when installed; when disassembling, only the external connecting rod needs to be connected in series with the two connecting blocks and pulled, and the locking can be released by the retraction of the telescopic column. The anti-slip pad inside the quick-release ring ensures the stability of the installation, realizing the quick disassembly and replacement of the heat exchange tube, greatly shortening the maintenance time and improving the convenience of device maintenance.

[0014] 2. This shallow geothermal double U-shaped heat exchanger features a multi-layered filtration structure consisting of a coarse filter, an activated carbon filter, and a precision filter, which progressively intercepts impurities in the water. The sealing rubber ring fits tightly against the inner wall of the pipe to prevent impurities from bypassing, effectively preventing scale buildup and blockage inside the heat exchanger. Simultaneously, symmetrically distributed temperature sensors on the inlet and outlet sides monitor the temperature in real time, and the data is synchronized to the top display screen for easy operation control, ensuring stable heat exchange efficiency.

[0015] 3. This shallow geothermal double U-shaped heat exchanger features a buffer spring and buffer plate in the support seat buffer groove, which can buffer the vibration of the device operation and the impact of ground settlement, extending the service life of the equipment; the quick-release ring and fixed column are integrally molded, and the arc transition at the top of the clamping block are structurally designed to improve the connection strength of components and the smoothness of assembly; the filter cover removal handle design and the modular structure of the quick-release unit reduce the maintenance operation threshold and adapt to long-term use needs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the 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.

[0017] Figure 1 is a cross-sectional view of the overall structure of the present invention; Figure 2 is a schematic diagram of the heat exchange tube connection structure of the present invention; Figure 3 is a schematic diagram of the connection structure between the fixed column and the locking block of the present invention; Figure 4 is a schematic diagram of the quick-release unit part of the present invention; Figure 5 is a cross-sectional view of the internal structure of the locking shell of the present invention.

[0018] In the diagram: 1. Heat exchanger; 2. Pipe; 3. Filter cover; 4. Drain hole; 5. Disassembly handle; 6. Heat exchange tube; 7. Mounting plate; 8. Quick release ring; 9. Fixing column; 10. Locking block; 11. Locking housing; 12. Fixing block; 13. Telescopic cylinder; 14. Telescopic column; 15. Connecting spring; 16. Irregular block; 17. Slider; 18. Fixing frame; 19. Sliding rod; 20. Connecting groove; 21. Limiting rod; 22. Connecting block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Please refer to Figures 1-5. This invention provides a technical solution: a shallow geothermal double U-shaped heat exchange device, including a heat exchanger 1 and a pipe 2. The pipe 2 is installed above the heat exchanger 1. A heat exchange mechanism is provided inside the heat exchanger 1. The heat exchange mechanism includes a quick-release unit and a filter unit. The quick-release unit is installed inside the heat exchanger 1, and the filter unit is installed inside the pipe 2. The quick-release unit includes a mounting plate 7, which is located inside the heat exchanger 1. A heat exchange tube 6 is provided inside the heat exchanger 1. A quick-release ring 8 is provided on the outer surface of the heat exchange tube 6. A fixing post 9 is fixedly connected to the side of the quick-release ring 8. A locking block 10 is fixedly connected to the other end of the fixing post 9. A locking housing 11 is fixedly connected to the side of the mounting plate 7. A fixing block 12 is fixedly connected inside the locking housing 11. A telescopic cylinder 13 is provided on the side of the fixing block 12. A telescopic column 14 is movably connected inside the telescopic cylinder 13. A connecting spring 15 is provided on the outer surface of the telescopic column 14. The other end of the cylinder 13 is fixedly connected to the irregular block 16. The side of the irregular block 16 is fixedly connected to the slider 17. The inside of the locking housing 11 is fixedly connected to the fixing frame 18. The inner side of the fixing frame 18 is provided with the sliding rod 19. The top of the locking housing 11 is provided with the connecting groove 20. The inside of the connecting groove 20 is provided with the limiting rod 21. The outer surface of the limiting rod 21 is movably connected to the connecting block 22. Thus, by installing the quick-release unit, when it is necessary to quickly disassemble and repair the heat exchange tube 6, the external connecting rod passes through the inside of the connecting block 22 to connect the two connecting blocks 22. The connecting rod drives the connecting block 22 to move to both sides, which in turn causes the connecting block 22 to drive the irregular block 16 to move outward. As a result, the telescopic column 14 retracts into the inside of the telescopic cylinder 13, which causes the connecting spring 15 to retract, thereby releasing the locking of the locking block 10. This allows for the quick disassembly and replacement of the heat exchange tube 6, thus improving the convenience of the device.

[0022] The connecting block 22 passes through the connecting groove 20 and is fixedly connected to the top of the irregular block 16. The connecting blocks 22 are at the same horizontal height, so the two connecting blocks 22 are connected in series by the external connecting rod. By pulling the connecting rod, the connecting blocks 22 are driven, which in turn causes the irregular block 16 to move outward.

[0023] One side of the irregular block 16 is a slope, and the bottom of the locking block 10 is also a slope. As the locking block 10 moves downward, it comes into contact with the slope of the irregular block 16, thereby causing the locking block 10 to push the irregular block 16 outward.

[0024] The filtration unit includes a filter cover 3, which is movably connected to the inside of the pipe 2. The filter cover 3 has a drain hole 4 inside and a disassembly handle 5 fixedly connected inside. Water that passes through the filtration unit and then through the pipe 2 into the heat exchanger 1 is filtered by the filter cover 3 to remove impurities, preventing impurities from entering the heat exchanger 1 and affecting the heat exchange effect inside the heat exchanger 1. At the same time, the disassembly handle 5 makes it easy to disassemble, clean and replace the filter cover 3, thereby improving the practicality of the device.

[0025] The bottom of the heat exchanger 1 is provided with a support base, and a buffer groove is provided inside the support base. A buffer spring is provided inside the buffer groove, and a buffer plate is fixedly connected to the top of the buffer spring. The top of the buffer plate is fixedly connected to the bottom of the heat exchanger 1.

[0026] The outer surface of the filter cover 3 is provided with a sealing rubber ring, which fits tightly against the inner wall of the pipe 2. The inner wall of the filter cover 3 is provided with a multi-layer filtration structure, consisting of a coarse filter, an activated carbon filter, and a precision filter from the inlet to the outlet.

[0027] The heat exchanger 1 is equipped with temperature sensors, which are symmetrically distributed on the inlet and outlet sides of the heat exchange tube 6. A temperature display screen is installed on the top of the heat exchanger 1, and the temperature display screen is electrically connected to the temperature sensors.

[0028] The inner surface of the quick-release ring 8 is provided with an anti-slip pad, which is in close contact with the outer surface of the heat exchange tube 6. The fixing post 9 and the quick-release ring 8 are integrally formed, and the top of the locking block 10 is an arc-shaped transition structure.

[0029] During use, the buffer spring in the buffer groove of the support base, together with the buffer plate, provides buffer support for the heat exchanger 1. When the heat exchange medium enters through the pipe 2, the filter cover 3 inside the pipe 2 is sealed by the sealing rubber ring on its outer surface. The coarse filter, activated carbon filter and fine filter arranged sequentially from the inlet to the outlet inside the filter cover filter the medium in stages. The filtered medium enters the heat exchanger 1, and the heat exchange tube 6 exchanges heat with the medium. Temperature sensors symmetrically distributed on the liquid inlet and liquid outlet sides of the heat exchange tube 6 inside the heat exchanger 1 detect the medium temperature and transmit the data to the temperature display screen on the top. The heat exchange tube 6 is connected by the quick-release ring 8 on the outer surface (with the anti-slip pad on the inner surface attached to the heat exchange tube 6) and the fixing column 9 (integrated with the quick-release ring 8). The locking block 10 (with a top arc transition) is installed. The bottom slope of the locking block 10 contacts the slope of the irregular block 16 inside the locking housing 11, pushing the irregular block 16 to move outward and causing the telescopic column 14 to retract and the connecting spring 15 to deform. After the locking block 10 is in place, the connecting spring 15 resets, and the irregular block 16 slides back to its original position along the inner slide rod 19 of the fixing frame 18 via the slider 17, thus locking the locking block 10. When the heat exchange tube 6 needs to be disassembled, the two connecting blocks 22 in the connecting groove 20 are connected in series by the external connecting rod and pulled, which drives the irregular block 16 to move outward, the telescopic column 14 retracts, and the connecting spring 15 retracts, releasing the locking block 10. The heat exchange tube 6 can then be quickly disassembled. The filter cover 3 can be disassembled, cleaned, and replaced via the disassembly handle 5.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shallow geothermal double U-shaped heat exchange device, comprising a heat exchanger (1) and a pipe (2), characterized in that: The pipe (2) is installed above the heat exchanger (1). The heat exchanger (1) is equipped with a heat exchange mechanism, which includes a quick-release unit and a filter unit. The quick-release unit is installed inside the heat exchanger (1), and the filter unit is installed inside the pipe (2). The quick-release unit includes a mounting plate (7), which is located inside the heat exchanger (1). The heat exchanger (1) is equipped with a heat exchange tube (6), and a quick-release ring (8) is provided on the outer surface of the heat exchange tube (6). A fixing post (9) is fixedly connected to the side of the quick-release ring (8), and a locking block (10) is fixedly connected to the other end of the fixing post (9). A locking housing (11) is fixedly connected to the side of the mounting plate (7), and the inner side of the locking housing (11) is... A fixed block (12) is fixedly connected to the main body. A telescopic cylinder (13) is provided on the side of the fixed block (12). A telescopic column (14) is movably connected inside the telescopic cylinder (13). A connecting spring (15) is provided on the outer surface of the telescopic column (14). A shaped block (16) is fixedly connected to the other end of the telescopic cylinder (13). A slider (17) is fixedly connected to the side of the shaped block (16). A fixed frame (18) is fixedly connected inside the locking housing (11). A sliding rod (19) is provided on the inner side of the fixed frame (18). A connecting groove (20) is opened on the top of the locking housing (11). A limit rod (21) is provided inside the connecting groove (20). A connecting block (22) is movably connected to the outer surface of the limit rod (21).

2. The shallow geothermal double U-shaped heat exchanger according to claim 1, characterized in that: The connecting block (22) passes through the connecting groove (20) and is fixedly connected to the top of the irregular block (16). The connecting block (22) is at the same horizontal height.

3. The shallow geothermal double U-shaped heat exchanger according to claim 1, characterized in that: One side of the irregular block (16) is a slope, and the bottom of the card block (10) is a slope.

4. A shallow geothermal double U-shaped heat exchanger according to claim 1, characterized in that: The filter unit includes a filter cover (3), which is movably connected to the inside of the pipe (2). The filter cover (3) has a drain hole (4) inside and a disassembly handle (5) is fixedly connected inside. Water that enters the heat exchanger (1) through the filter unit and then through the pipe (2) is filtered by the filter cover (3) to remove impurities and prevent impurities from entering the heat exchanger (1).

5. A shallow geothermal double U-shaped heat exchanger according to claim 1, characterized in that: The heat exchanger (1) is provided with a support base at the bottom. A buffer groove is provided inside the support base. A buffer spring is provided inside the buffer groove. A buffer plate is fixedly connected to the top of the buffer spring. The top of the buffer plate is fixedly connected to the bottom of the heat exchanger (1).

6. A shallow geothermal double U-shaped heat exchanger according to claim 4, characterized in that: The outer surface of the filter cover (3) is provided with a sealing rubber ring, which is tightly fitted to the inner wall of the pipe (2). The inner wall of the filter cover (3) is provided with a multi-layer filter structure, which consists of a coarse filter, an activated carbon filter and a precision filter in sequence from the inlet to the outlet.

7. A shallow geothermal double U-shaped heat exchanger according to claim 1, characterized in that: The heat exchanger (1) is equipped with a temperature sensor, which is symmetrically distributed on the liquid inlet side and liquid outlet side of the heat exchange tube (6). The top of the heat exchanger (1) is equipped with a temperature display screen, which is electrically connected to the temperature sensor.

8. A shallow geothermal double U-shaped heat exchanger according to claim 1, characterized in that: The inner surface of the quick-release ring (8) is provided with an anti-slip pad, which is in close contact with the outer surface of the heat exchange tube (6). The fixing column (9) and the quick-release ring (8) are integrally formed, and the top of the locking block (10) is an arc-shaped transition structure.

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