Flow dividing unit and refrigerating pipeline system thereof

Abstract

The utility model relates to the technical field of refrigeration pipeline systems, in particular to a shunting unit and a refrigeration pipeline system thereof. The shunting unit comprises a seat body, at least two communication ports communicated with an external connecting pipe are formed in the seat body, a cavity is formed in the seat body, and the communication ports are communicated with the cavity; wherein the seat body is integrally formed. The air conditioner has the advantages that the external connecting pipes are used for allowing refrigerants to flow, and the refrigerants enter the cavity through the external connecting pipes and the communicating ports and then enter other external connecting pipes through the cavity. And the seat body is integrally formed, so that the manufacturing cost is reduced, the leakage risk is also reduced, and the operation stability of the shunting unit is ensured.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration system technology, and in particular to a flow distribution unit and its refrigeration piping system. Background Technology

[0002] In current air conditioners, the compressor, four-way valve, condenser, expansion valve, evaporator, and receiver are connected by pipes. Distribution pipes are needed in the pipes to control the flow of refrigerant, but the distribution pipes are large in size, which causes the current air conditioners to be large in size and have complicated pipe connections.

[0003] Therefore, the distribution pipe is now being replaced with a flatter distribution unit to reduce the size of the air conditioner. However, existing distribution units are usually formed by overlapping and joining multiple plates, or by welding a base and a cover plate. Both of these forming methods are relatively complex, have high manufacturing costs, and are prone to leakage risks. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a current splitting unit.

[0005] A flow distribution unit, applied in a refrigeration piping system, includes a base, the base having at least two communication ports for communicating with external pipes, and a chamber constructed within the base, the communication ports communicating with the chamber; wherein the base is integrally formed.

[0006] With this configuration, the external pipes supply refrigerant flow. The refrigerant enters the chamber through the external pipes and connecting ports, and can then flow through the chamber into other external pipes. The integrated molding of the base body reduces manufacturing costs while also lowering the risk of leakage, ensuring the stability of the distribution unit's operation.

[0007] In one embodiment, at least one of the communication openings is provided on each of the two sides of the base in the thickness direction.

[0008] In one embodiment, one side of the seat body is provided with a first communication port, a second communication port, a third communication port and a fourth communication port that communicate with the chamber. The first communication port and the second communication port are respectively opened at both ends of the length direction of the seat body, and the third communication port and the fourth communication port are respectively opened at both ends of the width direction of the seat body.

[0009] In one embodiment, the flow area of ​​the first connection port is greater than the flow areas of the second connection port, the third connection port, and the fourth connection port.

[0010] In one embodiment, the seat includes a first connecting segment, a second connecting segment, a third connecting segment, and a fourth connecting segment. The first connecting port is opened in the first connecting segment, the second connecting port is opened in the second connecting segment, the third connecting port is opened in the third connecting segment, and the fourth connecting port is opened in the fourth connecting segment. The inner walls of the first connecting segment, the second connecting segment, the third connecting segment, and the fourth connecting segment are at least partially configured as arc-shaped structures.

[0011] In one embodiment, along the axial direction of the connecting port, the thickness of the seat is H, and the diameter of the inner wall of the first connecting segment is D, satisfying: H < D.

[0012] In one embodiment, the flow area of ​​the first connection port is S1, and H*D≥S1.

[0013] In one embodiment, along the axial direction of the communication port, the thickness of the seat is H, the diameter of the inner wall of the second connecting section is d, and the flow area of ​​the second communication port is S2, satisfying: H*d≥S2.

[0014] In one embodiment, the seat body is further provided with a fifth communication port communicating with the chamber. The fifth communication port is located at the intersection of the first connecting segment, the second connecting segment, the third connecting segment and the fourth connecting segment. The diameter of the inner wall of the first connecting segment is larger than the diameter of the inner walls of the second connecting segment, the third connecting segment and the fourth connecting segment.

[0015] In one embodiment, the thickness of the seat body is H along the axial direction of the communication port, satisfying: H≤15mm.

[0016] This utility model also provides a refrigeration piping system, including the diversion unit as described above and an external connector, wherein the external connector is fixedly connected to the communication port.

[0017] Compared to existing technologies, this application provides an integrally cast flow divider unit and an external connecting pipe connected to the flow divider unit. The external connecting pipe is used to supply refrigerant flow, and the refrigerant enters the chamber through the external connecting pipe and the connecting port, and can then enter other external connecting pipes through the chamber. The integrally cast base reduces manufacturing costs while also reducing the risk of leakage and ensuring the stability of the flow divider unit's operation. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of one embodiment of the current splitting unit provided by this utility model;

[0019] Figure 2A cross-sectional view of one embodiment of the shunt unit provided by this utility model;

[0020] Figure 3 A cross-sectional view from another angle of one embodiment of the diversion unit provided by this utility model;

[0021] Figure 4 A front-view sectional view of the base of one embodiment of the diversion unit provided by this utility model;

[0022] Figure 5 A schematic diagram of the structure of the base of one embodiment of the diversion unit provided by this utility model;

[0023] Figure 6 A top-view sectional view of the base of one embodiment of the diversion unit provided by this utility model.

[0024] The symbols in the diagram represent the following meanings:

[0025] 100. Diversion unit; 10. Base; 11. Connecting port; 111. First connecting port; 112. Second connecting port; 113. Third connecting port; 114. Fourth connecting port; 12. First connecting section; 13. Second connecting section; 14. Third connecting section; 15. Fourth connecting section; 16. Boss; 161. Fifth connecting port; 17. Step; 18. Chamber; 20. External pipe; 21. Flower arrangement structure. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is 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 can mean that the first feature is 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.

[0030] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0031] Please see Figures 1-6 This utility model provides a flow divider unit 100, applied to the circulation pipe of a refrigeration piping system, which can converge multiple pipes used for refrigerant flow to achieve miniaturization of the circulation piping. Furthermore, the flow divider unit 100 is integrally molded, thus reducing manufacturing costs and the risk of leakage. The refrigeration piping system in which the flow divider unit 100 is applied includes various implementations. Taking the application of the flow divider unit 100 in an air conditioning system as an example, the flow divider unit 100 is installed inside the outdoor unit. The outdoor unit's casing typically houses components constituting the refrigerant circuit, such as a compressor, storage tank, outdoor heat exchanger, oil separator, and various valves, as well as electrical installation units.

[0032] The distribution unit 100 of this application includes multiple external connecting pipes 20, which are used to connect to various components in the compressor, storage tank, outdoor heat exchanger, oil separator, various valves (four-way valve, electronic expansion valve, shut-off valve, etc.), and other piping in the refrigerant flow path. The overall flat structure optimizes the piping structure in the indoor unit, improves piping integration, reduces piping space occupation, and decreases the overall size of the outdoor unit.

[0033] Please see Figures 1-3The distribution unit 100 includes a base 10 with at least two communication ports 11 that communicate with external pipes 20. A chamber 18 is constructed within the base 10, and the communication ports 11 communicate with the chamber 18. The base 10 is integrally formed. Thus, the external pipes 20 supply refrigerant flow, and the refrigerant enters the chamber 18 through the external pipes 20 and the communication ports 11, and can then enter other external pipes 20 through the chamber 18. The integrally formed base 10 reduces manufacturing costs and leakage risk, ensuring the stability of the distribution unit 100 operation.

[0034] For example, the base 10 can be integrally cast. This integral casting method significantly reduces weld points and leaks. Only the external connecting pipe 20 needs to be welded to connect the chamber 18 within the diversion unit 100 to the external circulation pipeline. The base and external connecting pipe 20 can be combined by welding, resulting in a simpler structure, easier assembly, less material consumption, and lighter weight. This allows for a significant reduction in material wall thickness while maintaining strength, achieving lightweight and compact design.

[0035] Specifically, at least one communication port 11 is provided on each of the two sides of the base body 10 in the thickness direction, that is, both sides of the base body 10 in the thickness direction can be connected to the external pipe 20 to achieve a three-dimensional connection structure.

[0036] One side of the base 10 has a first connecting port 111, a second connecting port 112, a third connecting port 113, and a fourth connecting port 114 that communicate with the chamber 18. The first connecting port 111 and the second connecting port 112 are respectively located at both ends of the length direction of the base 10, and the third connecting port 113 and the fourth connecting port 114 are respectively located at both ends of the width direction of the base 10. It should be explained that the first connecting port 111, the second connecting port 112, the third connecting port 113, and the fourth connecting port 114 are all connecting ports 11. The provision of four connecting ports 11 ensures that the distribution unit 100 can simultaneously communicate with four external pipes 20, thereby improving the integration of the base 10, optimizing the structure of the circulation pipeline, and reducing its size.

[0037] Understandably, in other embodiments, one side of the base 10 may also have two, three, or five connecting ports 11, etc., and is not limited to the above-described embodiments.

[0038] Preferably, the base has multiple protrusions 16 on its side, extending away from the chamber 18. The protrusions 16 are hollow and form a communication opening 11. The protrusions 16 allow for a longer axial length of the communication opening 11, resulting in a larger contact area with the external connector 20 and higher connection strength. Even with a reduced bottom wall thickness, the insertion depth of the external connector 20 into the base (i.e., into the protrusion 16) can still be guaranteed, improving the welding strength of the connector while reducing material weight.

[0039] Furthermore, the inner wall of the boss 16 forming the communication port 11 is constructed with a step 17, which protrudes radially inward and serves to abut against the external connector 20. Thus, the step 17 limits the insertion depth of the external connector 20, preventing it from extending too far into the chamber 18 and affecting the normal operation of the valve seat structure. It also supports the positioning of the external connector 20 and allows the welding ring to be placed between the external connector 20 and the step 17, improving welding reliability.

[0040] Step 17 is located at the end of the connecting port 11 near the chamber 18, and the side of step 17 near the chamber 18 is flush with the inner wall of the chamber 18. In this way, the structure is more regular and can reduce the turbulence of the heat exchange medium.

[0041] The flow area of ​​the first connecting port 111 is larger than that of the second connecting port 112, the third connecting port 113, and the fourth connecting port 114. Thus, the first connecting port 111 serves as the main connecting port 11, while the other three connecting ports 11 serve as secondary connecting ports 11, thereby enabling the diversion unit 100 to have a diversion function of one inlet and multiple outlets or multiple inlets and one outlet.

[0042] Preferably, the second connecting port 112, the third connecting port 113, and the fourth connecting port 114 are set to the same size, thus making it easier for the flow diversion unit 100 to control the flow rate. Understandably, in other embodiments, the four connecting ports 11 may also be set to different sizes, or two larger connecting ports 11 may have the same flow area, etc., and the number and flow area of ​​the connecting ports 11 can be flexibly changed according to the working needs.

[0043] Specifically, the seat 10 includes a first connecting segment 12, a second connecting segment 13, a third connecting segment 14, and a fourth connecting segment 15. A first connecting port 111 is formed in the first connecting segment 12, a second connecting port 112 is formed in the second connecting segment 13, a third connecting port 113 is formed in the third connecting segment 14, and a fourth connecting port 114 is formed in the fourth connecting segment 15. The inner walls of the first connecting segment 12, the second connecting segment 13, the third connecting segment 14, and the fourth connecting segment 15 are at least partially configured as arc-shaped structures. This optimizes the structure of the seat 10, providing corresponding structures for the first connecting port 111, the second connecting port 112, the third connecting port 113, and the fourth connecting port 114, resulting in a more organized structure on the seat 10. In this embodiment, the seat 10 is defined to have a centerline along its length. The first connecting segment 12 and the second connecting segment 13 are both located on this centerline, while the third connecting segment 14 and the fourth connecting segment 15 are symmetrically arranged relative to this centerline.

[0044] The base 10 also has a fifth connecting port 161 that communicates with the chamber 18. The fifth connecting port 161 is located at the intersection of the first connecting section 12, the second connecting section 13, the third connecting section 14, and the fourth connecting section 15. The diameter of the inner wall of the first connecting section 12 is larger than the diameter of the inner walls of the second connecting section 13, the third connecting section 14, and the fourth connecting section 15. The fifth connecting port 161 is located at the intersection of the first connecting section 12, the second connecting section 13, the third connecting section 14, and the fourth connecting section 15, that is, it is located in a position closer to the center, so as to provide a more uniform refrigerant distribution effect. Moreover, when the fifth connecting port 161 is the inlet, the size of the first connecting section 12 and the first connecting port 111 is at its largest, which can distribute more flow.

[0045] Preferably, the arc-shaped structures on the first connecting port 111 and the first connecting segment 12 are coaxially arranged. Therefore, the distance between the edge of the first connecting port 111 and the inner wall of the arc-shaped structure of the first connecting segment 12 is equal everywhere. As a result, the refrigerant contacts a more uniform structure and inner wall when flowing into the chamber 18. The second connecting port 112, the third connecting port 113, the fourth connecting port 114, and the second connecting segment 13, the third connecting segment 14, and the fourth connecting segment 15 corresponding to each connecting port 11 also have corresponding technical effects, which will not be elaborated here.

[0046] Furthermore, along the axial direction of the connecting port 11, the thickness of the seat 10 is H, and the diameter of the inner wall of the first connecting section 12 is D, satisfying that H < D. In this way, the flat design of the seat 10 is achieved, making its thickness space very small, which helps to reduce the size and weight of the entire circulation pipeline.

[0047] Regarding the thickness H of the aforementioned seat 10, in order to ensure that the refrigerant entering from the first connecting port 111 with the largest flow area will not be blocked due to the small space, it is set as follows: the flow area of ​​the first connecting port 111 is S1, and H*D≥S1.

[0048] Similarly, in order to ensure the smooth flow of refrigerant entering the chamber 18 from other structures such as the second connecting port 112 with smaller flow areas, the diameter of the inner wall of the second connecting section 13 is d, and the flow area of ​​the second connecting port 112 is S2, satisfying: H*d≥S2.

[0049] Furthermore, along the axial direction of the connecting port 11, the thickness of the seat 10 is H, satisfying: H≤15mm. Thus, the maximum thickness of the seat 10 is numerically defined, and under this constraint, the flow area of ​​the first connecting port 111 is also correspondingly limited and will not be set too large.

[0050] For example, H can be set to 14mm, 13.1mm, 9mm, 6mm, etc., and can be adaptively adjusted according to the circulation pipeline in the refrigeration pipeline system. When the external connecting pipes 20 are all set to be thinner, the size of the base 10 can also be reduced accordingly.

[0051] This utility model also provides a refrigeration piping system, including the diversion unit 100 as described above and an external connector 20. One end of the external connector 20 inserted into the communication port 11 is provided with a perforated structure 21, which can improve the brazing welding qualification rate. Specifically, the perforated structure 21 is configured with multiple protruding ribs, which protrude radially outward from the external connector 20 and are spaced apart along the circumference of the external connector 20.

[0052] In another embodiment, the floral structure 21 is knurled to form multiple solder grooves evenly distributed along the outer periphery of the outer connector 20. These solder grooves accommodate solder, thereby increasing the connection strength between the outer connector 20 and the base 10, and improving the regularity and consistency of the solder groove formation on the outer periphery of the outer connector, which is beneficial for improving processing efficiency. The outer connector 20 and the base 10 are connected by a welding ring placed at the step 17 for easy positioning. The welding ring is interference-fitted with the outer connector 20. This arrangement helps to limit the position of the welding ring, preventing it from falling off during assembly and welding, and ensuring welding stability.

[0053] All external pipes 20 can be connected to control valves. Since the external pipes 20 have two inlets and outlets, and control valves generally also have two inlets and outlets, control valves can be arranged together directly. For example, multiple control valves can be arranged directly at the lower pipe of the diversion unit 100 provided in this application and directly connected to the external pipes 20 to achieve a highly integrated arrangement without separate arrangement, which greatly shortens the length of the external pipes 20 and reduces space occupation.

[0054] Compared to existing technologies, this application provides an integrally cast flow distribution unit 100 and an external connector 20 connected to the flow distribution unit 100. The external connector 20 is used to supply refrigerant flow. The refrigerant enters the chamber 18 through the external connector 20 and the connecting port 11, and can then enter other external connectors 20 through the chamber 18. The integrally cast base 10 reduces manufacturing costs and leakage risks, ensuring the stability of the flow distribution unit 100 operation.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A flow splitter unit, applied in a refrigeration piping system, characterized in that, Includes a base (10), the base (10) having at least two communication ports (11) communicating with an external pipe (20), the base (10) having a chamber (18) constructed therein, the communication ports (11) communicating with the chamber (18); The base (10) is integrally formed.

2. The shunt unit according to claim 1, characterized in that, At least one of the connecting ports (11) is provided on each of the two sides of the seat (10) in the thickness direction.

3. The shunt unit according to claim 1 or 2, characterized in that, The seat (10) has a first communication port (111), a second communication port (112), a third communication port (113) and a fourth communication port (114) communicating with the chamber (18) on one side. The first communication port (111) and the second communication port (112) are respectively located at both ends of the length direction of the seat (10), and the third communication port (113) and the fourth communication port (114) are respectively located at both ends of the width direction of the seat (10).

4. The shunt unit according to claim 3, characterized in that, The flow area of ​​the first connection port (111) is greater than the flow area of ​​the second connection port (112), the third connection port (113) and the fourth connection port (114).

5. The shunt unit according to claim 4, characterized in that, The seat (10) includes a first connecting segment (12), a second connecting segment (13), a third connecting segment (14), and a fourth connecting segment (15). The first communication port (111) is opened in the first connecting segment (12), the second communication port (112) is opened in the second connecting segment (13), the third communication port (113) is opened in the third connecting segment (14), and the fourth communication port (114) is opened in the fourth connecting segment (15). The inner walls of the first connecting segment (12), the second connecting segment (13), the third connecting segment (14), and the fourth connecting segment (15) are at least partially configured as arc-shaped structures.

6. The shunt unit according to claim 5, characterized in that, Along the axial direction of the connecting port (11), the thickness of the seat (10) is H, and the diameter of the inner wall of the first connecting section (12) is D, satisfying: H < D.

7. The shunt unit according to claim 6, characterized in that, The flow area of ​​the first connecting port (111) is S1, and H*D≥S1.

8. The shunt unit according to claim 5, characterized in that, Along the axial direction of the connecting port (11), the thickness of the seat (10) is H, the diameter of the inner wall of the second connecting section (13) is d, and the flow area of ​​the second connecting port (112) is S2, satisfying: H*d≥S2.

9. The shunt unit according to claim 5, characterized in that, The seat (10) is also provided with a fifth communication port (161) communicating with the chamber (18). The fifth communication port (161) is located at the intersection of the first connecting segment (12), the second connecting segment (13), the third connecting segment (14) and the fourth connecting segment (15). The diameter of the inner wall of the first connecting segment (12) is greater than the diameter of the inner walls of the second connecting segment (13), the third connecting segment (14) and the fourth connecting segment (15).

10. The shunt unit according to claim 1, characterized in that, Along the axial direction of the connecting port (11), the thickness of the seat (10) is H, which satisfies: H≤15mm.

11. A refrigeration piping system, characterized in that, Includes a diversion unit as described in any one of claims 1-9 and an external connector (20), wherein the external connector (20) is fixedly connected to the communication port (11).

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