Flow dividing unit and refrigerating system thereof

Abstract

The utility model relates to the technical field of refrigerating systems, in particular to a shunting unit and a refrigerating system thereof. The flow dividing unit comprises a base and a cover plate, the cover plate covers the base and is matched with the base to form a cavity, the base and the cover plate are both provided with communicating holes used for being communicated with an external connecting pipe, the communicating holes are communicated with the cavity, and the number of the communicating holes formed in at least one of the base and the cover plate is at least two. The utility model has the advantages that the base is integrally formed, the integral processing is simple, the structure is stable, welding spots are reduced, the medium leakage is avoided, and the communicating holes formed in the base and the cover plate are used for communicating with an external connecting pipe, so that the medium enters the cavity to complete redistribution.

Description

Technical Field

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

[0002] In the circulation piping of a refrigeration system, multiple pipes used for refrigerant flow need to be connected to a distribution unit. The distribution unit is used to distribute the fluid in the main flow path of the refrigeration system to various branches, or to gather the fluid in the branches to the main flow path, thereby completing the connection of each pipe and realizing the miniaturization of the circulation piping.

[0003] Existing shunt units are typically formed by overlapping and joining multiple plates, which is a complex process with high manufacturing costs and a risk of leakage. Utility Model Content

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

[0005] A flow distribution unit for use in a refrigeration system includes: a base; a cover plate covering the base and cooperating with the base to form a chamber; wherein both the base and the cover plate have communication holes for communicating with an external pipe, and the communication holes communicate with the chamber; the number of communication holes on the base is at least two, and / or the number of communication holes on the cover plate is at least two.

[0006] With this design, the base is integrally molded, making the overall processing simple and the structure stable. It also reduces welding points, thereby preventing media leakage. The connecting holes on the base and cover plate are used to connect with external pipes, allowing the media to enter the chamber for redistribution.

[0007] In one embodiment, the base has a plurality of protrusions on the side away from the cover plate, the protrusions extending away from the cover plate, and the protrusions are hollow and form the connecting hole.

[0008] In one embodiment, the boss forms a step on the inner wall of the connecting hole, the step protruding in a radially inward direction and used to abut against an external pipeline.

[0009] In one embodiment, the step is located at one end of the connecting hole near the chamber, and the side of the step near the chamber is flush with the inner wall of the chamber away from the cover plate.

[0010] In one embodiment, the chamber has a cross-shaped cross section, and the base has four connecting holes on the side away from the cover plate, with the four connecting holes located at the four ends of the chamber; the cover plate has one connecting hole, and the projection of the connecting hole on the cover plate onto the base is located in the middle of the four connecting holes on the base.

[0011] In one embodiment, the base has a first connection hole and the cover plate has a second connection hole. The positions of the first connection hole and the second connection hole are correspondingly arranged. The diversion unit also includes a connector, which passes through and connects to the first connection hole and the second connection hole.

[0012] In one embodiment, there are two first connecting holes, which are opened at both ends of the diagonal of the base, and two second connecting holes, which are opened at both ends of the diagonal of the cover plate, with the first connecting holes and the second connecting holes corresponding one-to-one.

[0013] In one embodiment, the base has a receiving groove, the cover plate is a flat plate structure, the cover plate covers the opening of the receiving groove to form the chamber, and the base and the cover plate are welded together.

[0014] In one embodiment, the slot of the base is bent toward the direction away from the receiving slot to form a flange, and a protrusion is provided on the side of the flange facing away from the cover plate. The first connecting hole is opened on the flange and extends to the end of the protrusion away from the cover plate.

[0015] A refrigeration system includes a distribution unit and an external pipe as described above, the external pipe and the connecting hole being fixedly connected.

[0016] Compared with the prior art, this utility model forms a diversion unit by combining a base and a cover plate. The base is integrally molded, which makes the overall processing simple, the structure stable, and reduces the number of welding points, thereby avoiding media leakage. The connecting holes opened on the base and the cover plate are used to connect with external pipes, so that the media can enter the chamber to complete the redistribution. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of one embodiment of the current splitting unit provided by this utility model;

[0018] Figure 2 A structural cross-sectional view of one embodiment of the shunt unit provided by this utility model;

[0019] Figure 3 A structural cross-sectional view of the base of one embodiment of the diversion unit provided by this utility model;

[0020] Figure 4 A structural cross-sectional view of the base of one embodiment of the diversion unit provided by this utility model;

[0021] Figure 5 A structural cross-sectional view of the cover plate of one embodiment of the diversion unit provided by this utility model.

[0022] The symbols in the diagram represent the following meanings:

[0023] 100. Diversion unit; 10. Base; 11. Chamber; 12. First connecting hole; 14. Receiving groove; 15. Flanged edge; 16. Boss; 17. Connecting hole; 18. Step; 19. Protrusion; 20. Cover plate; 21. Second connecting hole; 30. Connector; 40. Flower arrangement structure; 50. External pipe. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] The diversion unit 100 provided by this utility model is formed by assembling a base 10 and a cover plate 20. The positioning of the base 10 and cover plate 20 is ensured by the positioning cooperation of the connector 30 with the first connecting hole 12 and the second connecting hole 21, preventing misalignment. The connector 30 can also pre-tighten the base 10 and cover plate 20, facilitating welding between them. The diversion unit 100 is used in the circulation pipe of a refrigeration system, and can collect multiple pipes used for refrigerant flow. Refrigeration systems include various implementations, such as the outdoor unit of an air conditioning system. The diversion unit 100 is installed inside the outdoor unit. The outdoor unit typically houses components forming the refrigerant circuit, such as a compressor, storage tank, outdoor heat exchanger, oil separator, various valves, and electrical installation units. The distribution unit 100 of this application connects to multiple external pipes 50, 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 structure is flat, replacing the space-consuming refrigerant piping structure of the prior art. This optimizes the piping structure in the indoor unit, improves piping integration, reduces piping space requirements, and decreases the overall size of the outdoor unit.

[0030] Please see Figures 1-5The diversion unit 100 includes a base 10 and a cover plate 20. The cover plate 20 covers the base 10 and cooperates with the base 10 to form a chamber 11. Both the base 10 and the cover plate 20 have communication holes 17 for communicating with an external pipe 50, and the communication holes 17 communicate with the chamber 11. The number of communication holes 17 on the base 10 is at least two, and / or the number of communication holes 17 on the cover plate 20 is at least two. In this way, the base 10 is integrally formed, the overall processing is simple, the structure is stable, and the number of welding points is reduced, thereby avoiding medium leakage. The communication holes 17 on the base 10 and the cover plate 20 are used to communicate with the external pipe 50, so that the medium can enter the chamber to complete the redistribution.

[0031] The base 10 has multiple connecting holes 17 on the side away from the cover plate 20. These connecting holes 17 communicate with the chamber 11 and are used to connect to multiple external pipes 50. Thus, the base 10 connects to external pipes through the connecting holes 17, enabling the flow of the heat exchange medium. The multiple connecting holes 17 allow the chamber 11 to be simultaneously connected to multiple external pipes.

[0032] The chamber 11 has a cross-shaped cross-section. Four connecting holes 17 are located on the side of the base 10 away from the cover plate 20, at the four ends of the chamber 11. The cover plate 20 also has a connecting hole 17, the projection of which onto the base 10 is located in the middle of the four connecting holes 17 on the base 10. This design allows for more uniform refrigerant distribution when it enters the chamber 11 through the connecting holes 17 on the cover plate 20. Furthermore, the cross-shaped cross-section of the chamber 11 simplifies the refrigerant flow path within the chamber, and the four connecting holes 17 at the four ends facilitate refrigerant flow to each connecting hole 17.

[0033] The base 10 has multiple protrusions 16 on the side away from the cover plate 20. The protrusions 16 extend away from the cover plate 20 and are hollow, forming a connecting hole 17. The protrusions 16 allow for a longer axial length of the connecting hole 17, resulting in a larger contact area with the external connector 50 and higher connection strength. Even with a reduced bottom wall thickness of the base 10, the insertion depth of the external connector 50 into the base 10 (i.e., into the protrusion 16) can still be guaranteed, improving the welding strength of the connector while reducing material weight.

[0034] Furthermore, the boss 16 forms a step 18 on the inner wall of the connecting hole 17. The step 18 protrudes radially inward and is used to abut against the external connector 50. Thus, the step 18 limits the insertion depth of the external connector 50, preventing it from extending too far into the chamber 11 and affecting the normal operation of the diversion unit 100. It also supports the positioning of the external connector 50 and allows the welding ring to be placed between the external connector 50 and the step 18, improving welding reliability.

[0035] Step 18 is located at the end of the connecting hole 17 near the chamber 11, and the side of step 18 near the chamber 11 is flush with the inner wall of the chamber 11 away from the cover plate 20. In this way, the structure is more regular and can reduce the turbulence of the heat exchange medium.

[0036] The base 10 has a first connecting hole 12, and the cover plate 20 has a second connecting hole 21. The positions of the first connecting hole 12 and the second connecting hole 21 are correspondingly arranged. The diversion unit 100 also includes a connector 30, which passes through and connects to the first connecting hole 12 and the second connecting hole 21. Thus, the connector 30 passes through both the first connecting hole 12 and the second connecting hole 21, forming a limiting fit with both, thereby limiting the position of the base 10 and the cover plate 20, preventing positional displacement during assembly, and improving the connection strength. Furthermore, it allows for pre-assembly of the cover plate 20 and the base 10, facilitating welding and improving welding reliability.

[0037] Specifically, the first connecting hole 12 and the second connecting hole 21 can be configured as threaded holes, and the connector 30 can be configured as a bolt or screw. In this way, the installation and disassembly of the connector 30 with the first connecting hole 12 and the second connecting hole 21 are more convenient, and the connection and disconnection with both can be achieved simply by rotating.

[0038] Understandably, in other embodiments, the connector 30 may also be configured with other connection structures, such as rivets and pins. When no threads are provided in the first connecting hole 12 and the second connecting hole 21, the connector 30 may also be connected by cooperating with a nut.

[0039] There are two first connecting holes 12, located at both ends of the diagonal of the base 10, and two second connecting holes 21, located at both ends of the diagonal of the cover plate 20. The first connecting holes 12 and the second connecting holes 21 correspond one-to-one. In this way, the cooperation of the first connecting holes 12 and the second connecting holes 21 can further improve the positioning accuracy of the base 10 and the cover plate 20 and the stability of the connection.

[0040] It should be explained that the diagonal refers to the length of the base 10 extending from one end to the other, and also from one end to the other in the width direction of the base 10.

[0041] In other embodiments, a third connecting hole and a fourth connecting hole may be added between the base 10 and the cover plate 20 to further improve the connection strength and positioning accuracy between the two.

[0042] Furthermore, the base 10 has a receiving groove 14, and the cover plate 20 is a flat plate structure. The cover plate 20 covers the opening of the receiving groove 14 to form the chamber 11. The base 10 and the cover plate 20 are welded together. In this way, the connection area between the cover plate 20 and the base 10 can be increased, thereby improving the weld connection strength.

[0043] Specifically, the base 10 and the cover plate 20 are connected by welding methods such as laser welding, argon arc welding, and brazing. The base 10 is formed by processes such as casting or forging.

[0044] Furthermore, the base 10 is bent away from the receiving groove 14 to form a flange 15. A protrusion 19 is provided on the side of the flange 15 facing away from the cover plate 20. A first connecting hole 12 is formed on the flange 15 and extends to the end of the protrusion 19 away from the cover plate 20. That is, the thread extends from the side of the flange 15 near the cover plate 20 to the side of the protrusion 19 away from the cover plate 20. The depth of the first connecting hole 12 is greater than the thickness of the flange 15, thereby improving the connection strength between the connector 30 and the base 10.

[0045] It should be explained that the flange 15 is formed by bending outward from the base 10, so the area of ​​the flange 15 in the horizontal direction is greater than the wall thickness of the base 10 in the middle. In other words, the flange 15 increases the contact area between the base 10 and the cover plate 20, thereby enhancing the connection strength between the two.

[0046] This utility model also provides a refrigeration system, including the diversion unit 100 as described above.

[0047] Preferably, the refrigeration system further includes an external pipe 50, one end of which is inserted into the base 10 and has a flower-shaped structure 40 to improve the brazing welding qualification rate.

[0048] Compared with the prior art, the present invention forms a diversion unit 100 by means of a base 10 and a cover plate 20. The base 10 is integrally formed, which makes the overall processing simple, the structure stable, and reduces the number of welding points, thereby avoiding medium leakage. The connecting holes 17 opened on the base 10 and the cover plate 20 are used to connect with the external pipe 50, so that the medium can enter the chamber to complete the redistribution.

[0049] 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.

[0050] 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 for use in a refrigeration system, characterized in that, include: The base (10) is integrally formed; A cover plate (20) is placed on the base (10) and cooperates with the base (10) to form a chamber (11); The base (10) and the cover plate (20) are provided with communication holes (17) for communicating with the external pipe (50), and the communication holes (17) are connected to the chamber (11). The number of communication holes (17) on the base (10) is at least two, and / or the number of communication holes (17) on the cover plate (20) is at least two and the number of communication holes (17) opened on at least one of the cover plates (20) is at least two.

2. The shunt unit according to claim 1, characterized in that, The base (10) has a plurality of protrusions (16) on the side away from the cover plate (20). The protrusions (16) extend in a direction away from the cover plate (20). The protrusions (16) are hollow and form the connecting hole (17).

3. The shunt unit according to claim 2, characterized in that, The boss (16) forms a step (18) on the inner wall of the connecting hole (17). The step (18) protrudes in a radially inward direction and is used to abut against the external pipeline.

4. The shunt unit according to claim 3, characterized in that, The step (18) is located at one end of the connecting hole (17) near the chamber (11), and the side of the step (18) near the chamber (11) is flush with the inner wall of the chamber (11) away from the cover plate (20).

5. The shunt unit according to claim 1, characterized in that, The cross-section of the chamber (11) is cross-shaped. The base (10) has four connecting holes (17) on the side away from the cover plate (20). The four connecting holes (17) are located at the four ends of the chamber (11). The cover plate (20) has a connecting hole (17), and the projection of the connecting hole (17) on the cover plate (20) onto the base (10) is located in the middle of the four connecting holes (17) on the base (10).

6. The shunt unit according to claim 1, characterized in that, The base (10) has a first connecting hole (12) and the cover plate (20) has a second connecting hole (21). The positions of the first connecting hole (12) and the second connecting hole (21) are correspondingly arranged. The diversion unit also includes a connector (30), which passes through and connects to the first connecting hole (12) and the second connecting hole (21).

7. The shunt unit according to claim 6, characterized in that, There are two first connecting holes (12) and they are opened at both ends of the diagonal of the base (10). There are two second connecting holes (21) and they are opened at both ends of the diagonal of the cover plate (20). The first connecting holes (12) and the second connecting holes (21) correspond one to one.

8. The shunt unit according to claim 7, characterized in that, The base (10) has a receiving groove (14) and the cover plate (20) is a flat plate structure. The cover plate (20) covers the opening of the receiving groove (14) to form the chamber (11). The base (10) and the cover plate (20) are connected by welding.

9. The shunt unit according to claim 8, characterized in that, The slot of the base (10) is bent away from the receiving slot (14) to form a flange (15). A protrusion (19) is provided on the side of the flange (15) facing away from the cover plate (20). The first connecting hole (12) is opened on the flange (15) and extends to the end of the protrusion (19) away from the cover plate (20).

10. A refrigeration system, characterized in that, Includes a diversion unit as described in any one of claims 1-9 and an external connector (50), wherein the external connector (50) is fixedly connected to the communication hole (17).

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