An air conditioning heat pump maintenance module

Abstract

This utility model relates to the technical field of general-purpose air conditioning components, and more specifically, to an air conditioning heat pump maintenance module, including a maintenance valve, a pressure switch, a main pipe, and a first tee pipe. The main pipe has three ports, and the maintenance valve, the pressure switch, and one port of the main pipe are respectively connected to the three ports of the first tee pipe. The remaining two ports of the main pipe are used to connect to the circulation pipeline. By introducing the main pipe and the first tee pipe, and using the first tee pipe to connect the maintenance valve and the pressure switch to the main pipe, a more compact pipeline structure is formed. This significantly improves the ease of system installation, reduces pipeline connection points, lowers the risk of leakage, and facilitates independent maintenance of the maintenance valve and the pressure switch, thereby improving the overall system reliability and maintainability.

Description

Technical Field

[0001] This utility model relates to the technical field of general components for air conditioners, and more specifically, to an air conditioner heat pump maintenance module. Background Technology

[0002] With economic development and improved living standards, air conditioners, heat pumps, and other cooling or heating equipment have become widely used. Increased market competition and rising user demands for aesthetics and space efficiency are continuously driving the development of household air conditioners and heat pump products towards miniaturization, compactness, and integration. Manufacturers are committed to achieving greater cooling or heating capacity and higher energy efficiency within limited overall unit space, resulting in increasingly compact internal system structures and significantly reduced piping space.

[0003] In existing technologies, such as Figure 1 As shown, the maintenance module inside an air conditioner typically includes a pressure switch 3, a maintenance valve 2, two T-junctions, and a connecting pipe 1. The two T-junctions are connected in series via pipe 1. The pressure switch 3 and maintenance valve 2 are each connected to pipe 1 via the two T-junctions, and are also fixedly connected to pipe 1 via two vibration damping blocks. Multiple independent pipe fittings and valves require assembly using additional bends, welds, and connectors to accommodate the need for maneuvering and routing within a compact space. This complex piping layout not only occupies a lot of space, but also easily interferes with other components such as fans, motors, and sheet metal parts, posing a huge challenge to the overall structural design. Engineers often have to sacrifice airflow efficiency and increase sheet metal size to accommodate the routing of maintenance modules, and are even forced to adopt suboptimal component layouts. At the same time, the extremely compact design, with its dense piping and very small gaps between high-speed fans and vibrating components, makes it very easy for friction and collision to occur during production assembly or long-term operation, generating abnormal noises, and even causing pipe wear and rupture, leading to serious malfunctions such as refrigerant leakage. Sometimes, it can even lead to a situation where some models are "only able to be produced, but difficult to repair." Key maintenance interfaces such as maintenance valve 2 and pressure detection points may be hidden deep in the dense components, making daily maintenance and instrument connection operations extremely inconvenient. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of existing technology and provide an air conditioning heat pump maintenance module that makes the pipeline structure more compact, saves space, facilitates maintenance, and improves the reliability and maintainability of the overall system.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an air conditioning heat pump maintenance module, including a maintenance valve, a pressure switch, a main pipe and a first tee pipe. The main pipe has three interfaces. The maintenance valve, the pressure switch and one interface of the main pipe are respectively connected to the three interfaces of the first tee pipe. The remaining two interfaces of the main pipe are used to connect to the circulation pipeline.

[0006] By introducing a main pipe and a first tee pipe, the maintenance valve and pressure switch are connected to the main pipe via the first tee pipe, forming a more compact piping structure. This significantly improves the ease of system installation, reduces piping connection points, lowers the risk of leakage, and facilitates independent maintenance of the maintenance valve and pressure switch, enhancing the overall system reliability and maintainability. It fundamentally changes the traditional distributed connection layout, significantly saving installation space and providing a key solution for the miniaturization and compact design of air conditioning heat pumps, laying the foundation for subsequent modularization and prefabrication.

[0007] Furthermore, it also includes vibration damping blocks, through which the pressure switch is fixedly connected to the main pipe. The vibration damping blocks effectively reduce vibration transmission during system operation. Multiple vibration damping blocks can be installed, significantly reducing vibration noise in the piping system, extending the service life of critical components, and ensuring the stability and reliability of the system during long-term operation. This is particularly suitable for vibration-sensitive precision air conditioning heat pump systems.

[0008] Furthermore, the pressure switch is connected to the first three-way valve via a connecting pipe, and the shock absorber connects the main pipe and the connecting pipe. By adding a connecting pipe between the pressure switch and the first three-way valve, independent installation and flexible placement of the pressure switch are achieved. This design allows the pressure switch to be placed in the optimal monitoring position according to actual needs, avoiding installation difficulties caused by space limitations, while simplifying the disassembly and replacement process of the pressure switch and improving the system's maintenance convenience. Moreover, the shock absorber reduces stress and prevents pipe breakage.

[0009] Furthermore, each end of the shock absorber is provided with a mounting slot, and the main pipe and the connecting pipe are respectively fixedly installed in the mounting slot. Through the mounting slot, the shock absorber can be more firmly fixed to the main pipe and the connecting pipe. The design of the mounting slot improves the installation accuracy and stability of the shock absorber, reduces human error during installation, simplifies the installation steps, improves installation efficiency, and ensures the reliability and consistency of the shock absorption effect.

[0010] Furthermore, the damping block is equipped with damping rubber. The rubber material has good elasticity and fatigue resistance, can effectively absorb and isolate vibration, and is inexpensive and technologically mature, ensuring both damping effect and economy.

[0011] Furthermore, a pull hole is formed in the wall of the main pipe, and one end of the first tee pipe is installed in the pull hole. By forming a pull hole in the wall of the main pipe and installing the first tee pipe, the complex process of traditional welding or cutting of the main pipe is avoided. The pull hole design simplifies the installation process, improves installation efficiency, ensures the integrity of the main pipe, reduces strength loss caused by the opening, ensures the sealing performance and structural strength of the system, and reduces installation costs and construction difficulty.

[0012] Furthermore, the diameter of the main pipe is not less than 15.88 mm. This optimizes fluid transfer efficiency, reduces system pressure loss, and improves the energy efficiency ratio of the heat pump system when dealing with large-diameter circulation pipelines. It also ensures safe operation under high-pressure conditions and avoids performance degradation and potential failure risks caused by excessively small pipe diameters.

[0013] Furthermore, the main pipe's pull hole, the inspection valve, and the pressure switch are integrated into a single modular unit by brazing with the first tee pipe. Brazing integrates the main pipe, the first tee pipe, the inspection valve, and the pressure switch into a single unit, significantly reducing connection points and welding interfaces. This integrated design significantly improves the system's sealing performance, avoids leakage problems that may occur with traditional multi-point connections, simplifies the installation process, reduces installation costs and time, and improves the overall reliability and service life of the system, providing convenience for large-scale production and application.

[0014] Furthermore, the main pipe includes a first branch pipe, a second branch pipe, and a second tee pipe. The three ports of the second tee pipe are respectively connected to one end of the first branch pipe, one end of the second branch pipe, and one port of the first tee pipe. The other ends of the first and second branch pipes are used to connect to the circulation pipeline. This split-type main pipe design facilitates processing and adaptation to different flow channel requirements, providing another highly integrated solution. By designing the main pipe as a structure including the first branch pipe, the second branch pipe, and the second tee pipe, the connection possibilities of the system are further expanded. The connection design of the second tee pipe with the first branch pipe, the second branch pipe, and the first tee pipe allows the system to adapt to more complex pipeline layouts, enhancing the system's versatility and flexibility. It is particularly suitable for air conditioning heat pump systems requiring multi-point connections, improving the system's applicability and engineering adaptability.

[0015] Furthermore, the first branch pipe and the second tee pipe, the second branch pipe and the second tee pipe, the maintenance valve and the first tee pipe, the pressure switch and the first tee pipe, and the first tee pipe and the second tee pipe are all integrally formed by brazing to form an integrated modular unit. Brazing significantly reduces connection points and welding interfaces, substantially improving the system's sealing performance and avoiding leakage problems that may occur with traditional multi-point connections. It also simplifies the installation process, reduces installation costs and time, and improves the overall reliability and service life of the system, providing convenience for large-scale production and application.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) By introducing the design of the main pipe and the first tee pipe, the maintenance valve and pressure switch can be connected to the main pipe through the first tee pipe, forming a more compact pipeline structure; significantly improving the ease of system installation, reducing pipeline connection points, reducing leakage risk, and facilitating independent maintenance of the maintenance valve and pressure switch, improving the overall system reliability and maintainability, fundamentally changing the traditional distributed connection layout, significantly saving installation space, providing a key solution for the miniaturization and compact design of air conditioning heat pumps, and laying the foundation for subsequent modularization and pre-manufacturing; (2) By designing the main pipe as a structure that includes the first branch pipe, the second branch pipe, and the second tee pipe, the connection possibilities of the system are further expanded. The connection design between the second tee pipe and the first branch pipe, the second branch pipe, and the first tee pipe enables the system to adapt to more complex pipe layouts, enhances the versatility and flexibility of the system, and is particularly suitable for air conditioning heat pump systems that require multi-point connection, thereby improving the applicability and engineering adaptability of the system. (3) When facing larger pipe diameters, the complex process of traditional welding or cutting of the main pipe is avoided by opening a hole in the main pipe wall and installing the first tee pipe. The hole design simplifies the installation process, improves installation efficiency, ensures the integrity of the main pipe, reduces the strength loss caused by the hole, ensures the sealing and structural strength of the system, and reduces installation costs and construction difficulty. (4) By forming an integrated modular unit through brazing, the number of connection points and welding interfaces is greatly reduced, the sealing performance of the system is significantly improved, the leakage problem that may be caused by traditional multi-point connection is avoided, the installation process is simplified, the installation cost and time are reduced, the overall reliability and service life of the system are improved, and the convenience is provided for large-scale production and application. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a maintenance module in the prior art; Figure 2 This is a schematic diagram of the maintenance module in Embodiment 2 of this utility model; Figure 3 This is a schematic diagram of the maintenance module in Embodiment 3 of this utility model.

[0018] In the attached diagram: 1-pipe; 11-main pipe; 111-first branch pipe; 112-second branch pipe; 113-second tee pipe; 12-first tee pipe; 2-maintenance valve; 3-pressure switch; 4-shock absorber; 5-pull hole. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. Example

[0021] like Figure 2 As shown, an air conditioning heat pump maintenance module includes a maintenance valve 2, a pressure switch 3, a main pipe 11, and a first tee pipe 12. The main pipe 11 has three ports. The maintenance valve 2, the pressure switch 3, and one port of the main pipe 11 are respectively connected to the three ports of the first tee pipe 12. The remaining two ports of the main pipe 11 are used to connect to the circulation pipeline.

[0022] By introducing the main pipe 11 and the first tee pipe 12, the maintenance valve 2 and the pressure switch 3 can be connected to the main pipe 11 through the first tee pipe 12, forming a more compact pipeline structure. This significantly improves the ease of system installation, reduces the number of connection points in pipeline 1, lowers the risk of leakage, and facilitates independent maintenance of the maintenance valve 2 and the pressure switch 3, thereby improving the overall system reliability and maintainability. It fundamentally changes the traditional distributed connection layout, significantly saves installation space, provides a key solution for the miniaturization and compact design of air conditioning heat pumps, and lays the foundation for subsequent modularization and pre-manufacturing.

[0023] It also includes a vibration damping block 4, through which the pressure switch 3 is fixedly connected to the main pipe 11. The vibration damping block 4 can effectively reduce the transmission of vibration during system operation. Multiple vibration damping blocks 4 can be installed, which can significantly reduce the vibration noise of the pipeline system, extend the service life of key components, and ensure the stability and reliability of the system in long-term operation. It is especially suitable for precision air conditioning heat pump systems that are sensitive to vibration.

[0024] The pressure switch 3 is connected to the first three-way valve 12 via a connecting pipe, and the shock absorber 4 connects the main pipe 11 and the connecting pipe. By adding a connecting pipe between the pressure switch 3 and the first three-way valve 12, the pressure switch 3 can be installed independently and arranged flexibly. This design allows the pressure switch 3 to be placed in the optimal monitoring position according to actual needs, avoiding installation difficulties caused by space limitations, while simplifying the disassembly and replacement process of the pressure switch 3 and improving the system's maintenance convenience. Furthermore, the shock absorber 4 reduces stress and prevents pipe breakage.

[0025] The shock absorber 4 has mounting slots at both ends, and the main pipe 11 and the connecting pipe are fixedly installed in the mounting slots. The mounting slots allow the shock absorber 4 to be more securely fixed to the main pipe 11 and the connecting pipe. The mounting slot design improves the installation accuracy and stability of the shock absorber 4, reduces human error during installation, simplifies the installation steps, improves installation efficiency, and ensures the reliability and consistency of the shock absorption effect.

[0026] The damping block 4 is equipped with damping rubber. The rubber material has good elasticity and fatigue resistance, can effectively absorb and isolate vibration, and is inexpensive and has a mature technology, ensuring both damping effect and economy. Example

[0027] This embodiment is similar to Embodiment 1, except that the diameter of the main pipe 11 is not less than 15.88 mm, and a pull hole 5 is formed in the pipe wall of the main pipe 11. One end of the first tee pipe 12 is installed in the pull hole 5. Figure 2 As shown, the diameter of the pull hole is 9.51mm~9.54mm. By opening the pull hole 5 in the wall of the main pipe 11 and installing the first tee pipe 12, the complex process of traditional welding or cutting of the main pipe 11 is avoided. The pull hole 5 design simplifies the installation process, improves installation efficiency, ensures the integrity of the main pipe 11, reduces strength loss caused by the opening, ensures the system's sealing and structural strength, and reduces installation costs and construction difficulty. When dealing with larger sizes, it optimizes fluid transmission efficiency, reduces system pressure loss, improves the energy efficiency ratio of the heat pump system, and ensures safe operation under high pressure conditions, avoiding system performance degradation and potential failure risks caused by insufficient pipe diameter.

[0028] The pull hole 5 of the main pipe 11, the inspection valve 2, and the pressure switch 3 are integrated into a single modular unit by brazing with the first tee pipe 12. This brazing method significantly reduces the number of connection points and welding interfaces. This integrated design significantly improves the system's sealing performance, avoids leakage problems that may occur with traditional multi-point connections, simplifies the installation process, reduces installation costs and time, and improves the overall reliability and service life of the system, facilitating large-scale production and application. Example

[0029] This embodiment is similar to Embodiment 1, except that, as Figure 3 As shown, the main pipe 11 includes a first branch pipe 111, a second branch pipe 112, and a second tee pipe 113. The three interfaces of the second tee pipe 113 are respectively connected to one end of the first branch pipe 111, one end of the second branch pipe 112, and one interface of the first tee pipe 12. The other ends of the first branch pipe 111 and the second branch pipe 112 are used to connect to the circulation pipeline. This further enhances the compactness and integration of the structure. This split-type main pipe 11 design facilitates processing and adaptation to different flow channel requirements, providing another highly integrated solution. By designing the main pipe 11 as a structure including the first branch pipe 111, the second branch pipe 112, and the second tee pipe 113, the connection possibilities of the system are further expanded. The connection design of the second tee pipe 113 with the first branch pipe 111, the second branch pipe 112, and the first tee pipe 12 enables the system to adapt to more complex pipeline layouts, enhancing the system's versatility and flexibility. It is particularly suitable for air conditioning heat pump systems requiring multi-point connections, improving the system's applicability and engineering adaptability.

[0030] In this embodiment, the three ports of the second tee pipe 113 have a diameter of 9.6 mm, the first branch pipe 111 and the second branch pipe 112 are both straight pipes with a diameter of 9.52 mm, the three ports of the first tee pipe 12 have diameters of 9.52 mm, 9.6 mm and 6.5 mm respectively, and the inner diameters of the two mounting slots on the shock absorber block 4 are 9.52 mm and 6.35 mm respectively. Furthermore, the specifications of the system components can be adjusted according to the specifications of the fluorine tubing in the whole machine. For example, when the main pipe 11 required by the system has a diameter of 12.7 mm, that is, when the first branch pipe 111 and the second branch pipe 112 are straight pipes with a diameter of 12.7 mm, the three ports of the second tee pipe 113 have diameters of 12.8 mm, 12.8 mm and 9.6 mm respectively, and the inner diameters of the two mounting slots on the shock absorber block 4 are 12.7 mm and 6.35 mm respectively.

[0031] The first branch pipe 111 and the second tee pipe 13, the second branch pipe 112 and the second tee pipe 13, the maintenance valve 2 and the first tee pipe 12, the pressure switch 3 and the first tee pipe 12, and the first tee pipe 12 and the second tee pipe 113 are all integrally formed by brazing, creating integrated modular units. This integrated design significantly reduces connection points and welding interfaces. It significantly improves the system's sealing performance, avoids leakage problems that may occur with traditional multi-point connections, simplifies the installation process, reduces installation costs and time, and improves the overall reliability and service life of the system, facilitating large-scale production and application.

[0032] After the system starts, the refrigerant flows along the first branch pipe 111 in the main pipe 11 through the second branch pipe 112. Simultaneously, a portion of the refrigerant is diverted through the second tee pipe 113 and the first tee pipe 12, entering the pressure switch 3 connected thereto. The sensing element inside the pressure switch 3 continuously monitors the system pressure. If the system pressure is normal, the pressure switch 3 remains closed, the circuit is open, and the air conditioner / heat pump continues to operate. If the pressure exceeds the safe range due to a fault (such as excessively high pressure caused by poor condenser heat dissipation, or excessively low pressure caused by refrigerant leakage), the pressure switch 3 will immediately activate, disconnecting the circuit and stopping the compressor, thus protecting the system. Throughout the operation, mechanical vibrations generated by the compressor, etc., are effectively absorbed and buffered by the shock absorber 4 when transmitted to this module through the circulation pipeline, ensuring the long-term safety of the module itself and the circulation pipeline.

[0033] This invention, by introducing a main pipe 11 and a first tee pipe 12, allows the maintenance valve 2 and pressure switch 3 to connect to the main pipe 11 via the first tee pipe 12, forming a more compact pipeline structure. This significantly improves the ease of system installation, reduces the number of connection points in the pipeline 1, lowers the risk of leakage, and facilitates independent maintenance of the maintenance valve 2 and pressure switch 3, thereby enhancing the overall system reliability and maintainability. It fundamentally changes the traditional distributed connection layout, significantly saving installation space and providing a key solution for the miniaturization and compact design of air conditioning heat pumps, laying the foundation for subsequent modularization and prefabrication. By designing the main pipe 11 to include a first branch pipe 111, a second branch pipe 112, and a second tee pipe 113, the connection possibilities of the system are further expanded. The connection design between the second tee pipe 113 and the first branch pipe 111, the second branch pipe 112, and the first tee pipe 12 allows the system to adapt to more complex piping layouts, enhancing its versatility and flexibility. This is particularly suitable for air conditioning heat pump systems requiring multi-point connections, improving the system's applicability and engineering adaptability. When dealing with larger pipe diameters, the complex processes of traditional welding or cutting of the main pipe 11 are avoided by creating a pull hole 5 in the main pipe wall and installing the first tee pipe 12. The pull hole 5 design simplifies the installation process, improves installation efficiency, and ensures the integrity of the main pipe 11, reducing strength loss due to the opening, ensuring the system's sealing and structural strength, and reducing installation costs and construction difficulty. The integrated modular unit, formed by brazing, significantly reduces connection points and welding interfaces. This integrated design significantly improves the system's sealing performance, avoids leakage problems that may occur with traditional multi-point connections, simplifies the installation process, reduces installation costs and time, improves the overall reliability and service life of the system, and facilitates large-scale production and application.

[0034] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An air conditioning heat pump maintenance module, characterized in that, It includes a maintenance valve (2), a pressure switch (3), a main pipe (11) and a first tee pipe (12). The main pipe (11) has three ports. One port of the maintenance valve (2), the pressure switch (3) and the main pipe (11) are respectively connected to the three ports of the first tee pipe (12). The remaining two ports of the main pipe (11) are used to connect to the circulation pipeline.

2. The air conditioning heat pump maintenance module according to claim 1, characterized in that, It also includes a shock absorber (4), and the pressure switch (3) is fixedly connected to the main pipe (11) through the shock absorber (4).

3. The air conditioning heat pump maintenance module according to claim 2, characterized in that, The pressure switch (3) is connected to the first tee pipe (12) through a connecting pipe, and the shock absorber (4) is connected to the main pipe (11) and the connecting pipe.

4. The air conditioning heat pump maintenance module according to claim 3, characterized in that, The shock absorber (4) has mounting slots at both ends, and the main pipe (11) and the connecting pipe are fixedly installed in the mounting slots.

5. The air conditioning heat pump maintenance module according to claim 4, characterized in that, The shock absorber block (4) is provided with shock absorber rubber.

6. The air conditioning heat pump maintenance module according to claim 1, characterized in that, The main pipe (11) has a pull hole (5) on its wall, and one end of the first tee pipe (12) is installed in the pull hole (5).

7. An air conditioning heat pump maintenance module according to claim 6, characterized in that, The diameter of the main tube (11) is not less than 15.88 mm.

8. The air conditioning heat pump maintenance module according to claim 6, characterized in that, The pull hole (5) of the main pipe (11), the inspection valve (2) and the pressure switch (3) are integrated into a modular unit by brazing with the first three-way pipe (12).

9. The air conditioning heat pump maintenance module according to any one of claims 1 to 6, characterized in that, The main pipe (11) includes a first branch pipe (111), a second branch pipe (112), and a second tee pipe (113). The three ports of the second tee pipe (113) are respectively connected to one end of the first branch pipe (111), one end of the second branch pipe (112), and one port of the first tee pipe (12). The other end of the first branch pipe (111) and the other end of the second branch pipe (112) are used to connect to the circulation pipeline.

10. The air conditioning heat pump maintenance module according to claim 9, characterized in that, The first branch pipe (111) and the second tee pipe (113), the second branch pipe (112) and the second tee pipe (113), the maintenance valve (2) and the first tee pipe (12), the pressure switch (3) and the first tee pipe (12), the first tee pipe (12) and the second tee pipe (113) are integrally formed by brazing to form an integrated module unit.

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