Indoor condenser collecting pipe assembly and indoor condenser

Abstract

The embodiment of the utility model provides an indoor condenser header pipe assembly and an indoor condenser, and relates to the field of vehicle-mounted air conditioning systems, and the indoor condenser header pipe assembly comprises a header pipe body and a flow guide part. The flow guide part is provided with a flow guide channel, the flow guide part is provided with a first end and a second end in the extending direction of the flow guide channel, the inner diameter of the flow guide channel is gradually reduced in the direction from the first end to the second end, and one end of the flow guide channel extends to the second end; the second end is inserted into the collecting pipe body; the first end is used for being in butt joint with an inlet pipe. According to the design of the collecting pipe assembly, the flow distribution uniformity can be guaranteed when the flow is small, and therefore the temperature uniformity of the air outlet surface is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle air conditioning systems, and more specifically, to an indoor condenser manifold assembly and an indoor condenser. Background Technology

[0002] The indoor condenser is a key component in heat pump air conditioning systems for new energy vehicles, especially in winter when pure electric vehicles are in use. Since the onboard HVAC system lacks hot water as a heating source, using a PTC heater would consume a significant amount of electricity. Using the indoor condenser in the heat pump system as the heat source reduces electricity consumption and increases driving range. The basic working principle of the indoor condenser is as follows: the inlet is connected to the compressor exhaust port of the air conditioning heat pump system. The inlet refrigerant is a high-temperature, high-pressure superheated gas. After entering the indoor condenser, heat is transferred through flat tubes to the outer wall of the tubes and the fins, where it exchanges heat with the air entering the fins. The heated air is then delivered to the vehicle interior to meet the heating needs. To ensure a relatively uniform temperature rise in different areas of the vehicle interior, the average temperature difference between the air outlet areas of the indoor condenser should be as small as possible. Therefore, depending on the temperature uniformity requirements of the air outlet surface under different operating conditions, a 4-flow or 2-flow indoor condenser is selected.

[0003] The inventors discovered in their research that existing indoor condensers have at least the following drawbacks:

[0004] In actual tests, under different operating conditions, the temperature uniformity of the air outlet surface of the 4-flow system is better and more stable than that of the 2-flow system, but the flow resistance is about 3-4 times higher than that of the 2-flow system. When the refrigerant flow rate is large, the refrigerant is distributed throughout the entire core of the 2-flow system, resulting in good temperature uniformity. However, when the flow rate is small, the flow distribution uniformity is poor, resulting in a large temperature difference in different areas of the air outlet surface. Utility Model Content

[0005] The purpose of this invention includes, for example, providing an indoor condenser manifold assembly and an indoor condenser that can ensure uniform flow distribution when the flow rate is low, thereby improving the temperature uniformity of the outlet air.

[0006] The embodiments of this utility model can be implemented as follows:

[0007] In a first aspect, this utility model provides an indoor condenser manifold assembly, comprising:

[0008] The manifold body and the guide member are provided with a guide channel. The guide member has a first end and a second end in the extension direction of the guide channel. The inner diameter of the guide channel gradually decreases from the first end to the second end, and one end of the guide channel extends to the second end. The second end is inserted into the manifold body. The first end is used to connect with the inlet pipe.

[0009] In an optional embodiment, the flow guide includes a tube body and a limiting protrusion, the limiting protrusion being connected to the tube body and protruding from the outer wall of the tube body; at least a portion of the lumen of the tube body is configured as the flow guide channel; the limiting protrusion abuts against the manifold body to limit the depth to which the tube body is inserted into the manifold body.

[0010] In an optional embodiment, the limiting protrusion is configured as an annular protrusion, and the limiting protrusion is arranged around the axis of the tube body.

[0011] In an optional embodiment, the tube body and the limiting protrusion are configured as an integral structure.

[0012] In an optional embodiment, the diameter of at least a portion of the outer circumferential surface of the tube gradually decreases in the direction from the first end to the second end, and the outer diameter of the second end is smaller than the outer diameter of the first end.

[0013] In an optional embodiment, the indoor condenser manifold assembly further includes a connecting unit, which is installed at the end of the manifold body, and the manifold body is connected to the connecting unit.

[0014] In an optional embodiment, the connecting unit includes a connecting pipe, an intermediate plate, and an end plate connected in sequence; a first pipe joint is protruding from the first plate surface of the intermediate plate, the connecting pipe is sleeved outside the first pipe joint, and the first pipe joint is located inside the connecting pipe; the second plate surface of the intermediate plate is abutted against the end plate, and the intermediate plate and the end plate are fixedly connected; an assembly hole communicating with the first pipe joint is provided on the end plate; a second pipe joint is provided on the side of the end plate opposite to the second plate surface, and the lumen of the second pipe joint communicates with the assembly hole;

[0015] The second pipe fitting is inserted into the body of the manifold and the two are fixedly fitted together; the connecting pipe is used for the insertion of the inlet pipe.

[0016] In an optional embodiment, a rivet strip is provided on the end plate, and the intermediate plate is fixedly connected to the end plate by the rivet strip.

[0017] In an optional embodiment, the outer wall of the second pipe connector is provided with a plurality of grooves, and a portion of the manifold body is engaged in the plurality of grooves to achieve a riveted fit between the second pipe connector and the manifold body.

[0018] Secondly, this utility model provides an indoor condenser, the indoor condenser comprising:

[0019] The inlet pipe and the indoor condenser manifold assembly described in any of the foregoing embodiments, wherein the inlet pipe is connected to the manifold body and the inlet pipe is connected to the first end of the guide member.

[0020] The beneficial effects of this utility model embodiment include, for example:

[0021] In summary, the indoor condenser manifold assembly provided in this embodiment features a guide vane installed on the manifold body. This guide vane has a gradually changing flow channel; the smaller diameter end of the flow channel inserts into the manifold body, while the larger diameter end connects to the inlet pipe. The refrigerant entering through the inlet pipe first passes through the guide vane's flow channel and then enters the manifold body, where it is delivered to multiple flat tubes connected to the manifold body. Due to the flow channel design, the refrigerant entering the channel has increased velocity and is accelerated outwards, allowing it to travel further and flow more effectively into areas farther from the inlet. This improves the uniformity of refrigerant flow distribution and consequently, the temperature uniformity of the outlet surface. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of an indoor condenser according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the indoor condenser manifold assembly according to an embodiment of this application;

[0025] Figure 3 This is a cross-sectional schematic diagram of the indoor condenser manifold assembly according to an embodiment of this application;

[0026] Figure 4 This is an exploded view of the indoor condenser manifold assembly according to an embodiment of this application.

[0027] icon:

[0028] 001-Inlet pipe; 100-Combine pipe body; 200-Connecting unit; 210-Connecting pipe; 211-First pipe hole; 212-Second pipe hole; 220-Intermediate plate; 221-First pipe connector; 222-Positioning hole; 230-End plate; 231-Assembly hole; 232-Second pipe connector; 233-Riveting strip; 300-Guide component; 301-First end; 302-Second end; 310-Pipe body; 320-Limiting protrusion. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use, 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, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0034] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0035] In existing technologies, the heat exchange structure formed by the combination of manifolds and flat tubes has a large number of flat tubes distributed along the length of the manifold. Refrigerant enters from one end of the manifold and flows along its length, entering the flat tubes connected to it. Because some flat tubes are far from the manifold inlet, the amount of refrigerant reaching the flat tubes gradually decreases as the distance increases, resulting in poor refrigerant distribution uniformity, uneven heat exchange between the refrigerant and air, and poor temperature uniformity at the outlet surface.

[0036] In view of this, the designers have provided an indoor condenser manifold assembly that can improve the uniformity of refrigerant distribution, thereby improving the uniformity of outlet air surface temperature.

[0037] Please refer to Figures 1-4 This embodiment provides an indoor condenser manifold assembly, which includes a manifold body 100 and a flow guide 300. The flow guide 300 is provided with a flow guide channel, and has a first end 301 and a second end 302 in the extension direction of the flow guide channel. The inner diameter of the flow guide channel gradually decreases from the first end 301 to the second end 302, and one end of the flow guide channel extends to the second end 302. The second end 302 is inserted into the manifold body 100. The first end 301 is used to connect with the inlet pipe 001.

[0038] As described above, the indoor condenser manifold assembly provided in this embodiment operates as follows:

[0039] The flow guide 300 is connected to one end of the manifold body 100, and the inlet pipe 001 is connected to the manifold body 100 and abuts against the flow guide 300. The flow guide 300 has an internal flow channel with a gradient structure. The larger diameter end of the flow channel mates with the inlet pipe 001, while the smaller diameter end is located inside the manifold body 100. When refrigerant enters from the inlet pipe 001, it first passes through the flow guide channel of the flow guide 300 and then enters the manifold body 100, thus being delivered to multiple flat pipes connected to the manifold body 100. Due to the design of the flow guide channel, the refrigerant entering the channel has increased velocity and is accelerated outwards, allowing it to travel further and flow better into areas farther from the inlet. This improves the uniformity of refrigerant flow distribution and consequently, the temperature uniformity of the outlet surface.

[0040] The following embodiments illustrate the details of the indoor condenser manifold assembly of this application by way of example.

[0041] Please refer to Figures 1-4In this embodiment, optionally, the indoor condenser manifold assembly includes a manifold body 100, a connecting unit 200, and a flow guide 300. The flow guide 300 is connected to the manifold body 100 via the connecting unit 200, which is used to connect to the inlet pipe 001. The refrigerant enters the flow guide 300 through the inlet pipe 001, then enters the manifold body 100, and is then output from the manifold body 100 to the flat pipe, and then flows out from another manifold connected to the flat pipe, thus achieving circulation.

[0042] The flow guide 300 enables the refrigerant to accelerate its movement, allowing it to quickly reach a location far from the inlet pipe 001. This improves the uniformity of the refrigerant distribution along the axial direction of the manifold body 100 and enhances the temperature uniformity of the outlet surface.

[0043] In this embodiment, optionally, the manifold body 100 can be a round tube, a square tube, or a "D"-shaped tube, etc. One end of the manifold body 100 is closed, and the other end is open, which can mate with the connecting unit 200. It should be understood that the manifold body 100 is provided with a plurality of insertion holes arranged at intervals along its axial direction, and each insertion hole can be used to insert one end of a flat tube. In addition, the number of manifold bodies 100 is configured as needed according to different process designs, and no specific limitation is made in this embodiment.

[0044] It is worth noting that the manifold body 100 has a flexible structural design, is easy to process and manufacture, has low cost, adapts to different scenario requirements, and has a wide range of applications.

[0045] In practical use, the number of manifold bodies 100 distributed at both ends of the flat tube is equal. For example, when the indoor condenser has a single flow path, there are two manifold bodies 100 arranged opposite each other, with each end of the flat tube inserted into one of the two manifold bodies 100. Alternatively, two manifold bodies 100 can be distributed side-by-side at each end of the flat tube, thus forming a two-flow or four-flow indoor condenser.

[0046] Please refer to Figures 2-4In this embodiment, optionally, the connecting unit 200 includes a connecting pipe 210, an intermediate plate 220, and an end plate 230. The connecting pipe 210 can be a circular pipe with independent first pipe holes 211 and second pipe holes 212. The intermediate plate 220 can be a rectangular plate, with a first pipe connector 221 protruding from the first plate surface of the intermediate plate 220. The first pipe connector 221 penetrates the intermediate plate 220 and can be a circular pipe. The first pipe hole 211 of the connecting pipe 210 is sleeved on the outside of the first pipe connector 221, and the first pipe connector 221 is located inside the connecting pipe 210, that is, the first pipe connector 221 does not protrude from the end of the connecting pipe 210 away from the intermediate plate 220, so that part of the cavity of the connecting pipe 210 is not occupied by the first pipe connector 221, and this part of the cavity of the connecting pipe 210 can be used for the insertion of the outlet pipe. Meanwhile, the intermediate plate 220 is also provided with a positioning hole 222 independent of the first pipe connector 221, and the second pipe hole 212 is connected to the positioning hole 222. The end plate 230 is provided with two assembly holes 231, both of which can be round holes. In addition, the end plate 230 is also provided with two second pipe connectors 232 that are connected to the two assembly holes 231 respectively. The second pipe connectors 232 can be round pipes. The intermediate plate 220 and the end plate 230 are fixedly connected. The second plate surface of the intermediate plate 220 is in contact with the first plate surface of the end plate 230. The second pipe connectors 232 are located on the side of the end plate 230 away from the intermediate plate 220. The first pipe connector 221 is connected to one second pipe connector 232 through one assembly hole 231, and the positioning hole 222 is connected to the other second pipe connector 232 through the other assembly hole 231. The two second pipe connectors 232 of the end plate 230 can be inserted into two parallel manifold bodies 100 and fixedly engaged with the manifold bodies 100. The inlet pipe 001 is inserted into the second pipe hole 212 and cooperates with the guide 300 located in the second pipe hole 212.

[0047] Furthermore, the end plate 230 is provided with rivet strips 233 around its perimeter, and the intermediate plate 220 is fixedly connected to the end plate 230 by the rivet strips 233. There can be multiple rivet strips 233, which are arranged at intervals in the circumferential direction around the perimeter of the end plate 230. The cooperation of multiple rivet strips 233 can improve the firmness of the connection between the end plate 230 and the intermediate plate 220.

[0048] It should be understood that the rivet strip 233 is a metal part with a certain bending capacity, and it is not easy for it to automatically return to its original position after bending. Thus, before the intermediate plate 220 and the end plate 230 are fixedly connected, the rivet strip 233 is not connected to the intermediate plate 220. After the intermediate plate 220 and the end plate 230 are mated, the rivet strip 233 is bent towards the intermediate plate 220, and the rivet strip 233 contacts the surface of the intermediate plate 220 away from the end plate 230. The rivet strip 233 is used to press the intermediate plate 220 against the end plate 230. The fixing method of the intermediate plate 220 and the end plate 230 is simple and reliable.

[0049] Furthermore, the outer wall of the second pipe connector 232 is provided with multiple grooves, which are spaced apart circumferentially on the second pipe connector 232. When the second pipe connector 232 is inserted into the manifold body 100, a portion of the manifold body 100 deforms inward, thereby engaging with the multiple grooves to achieve a riveted fit between the second pipe connector 232 and the manifold body 100. The connection method between the second pipe connector 232 and the manifold body 100 is simple and reliable.

[0050] Obviously, multiple protrusions can also be provided on the outer wall of the second pipe joint 232, and the protrusions can also be snapped into the manifold body 100.

[0051] Please refer to Figures 2-4 In this embodiment, optionally, the flow guide 300 includes an integrally formed tube body 310 and a limiting protrusion 320. The tube body 310 can be a conical tube, and at least a portion of the cavity of the tube body 310 is a flow guide channel, which is configured with a gradient structure. Specifically, the tube body 310 has a first end 301 and a second end 302 in its length direction, and the diameter of the flow guide channel gradually decreases from the first end 301 to the second end 302. Correspondingly, the outer diameter of the tube body 310 gradually decreases from the first end 301 to the second end 302, making it easier for the tube body 310 to be inserted into the second tube hole 212 using its second end 302, reducing the likelihood of interference with the port of the connecting tube 210 and preventing collisions. The limiting protrusion 320 protrudes from the outer circumferential surface of the tube body 310. When the second end 302 of the tube body 310 passes through the first pipe joint 221, it also passes through the second pipe joint 232 and extends into the manifold body 100. The limiting protrusion 320 abuts against the first plate surface of the intermediate plate 220, thereby limiting the insertion depth of the tube body 310 and facilitating the assembly of the guide component 300.

[0052] It is worth noting that the inlet tube 001 is inserted into the second tube hole 212 of the connecting tube 210, and part of the tube body 310 is also located in the second tube hole 212. The port of the inlet tube 001 can be connected to one end of the tube body 310, which serves to limit the insertion depth of the inlet tube 001.

[0053] Furthermore, the limiting protrusion 320 can be a ring structure, with the limiting protrusion 320 arranged around the tube body 310. The limiting protrusion 320 has a large contact area with the intermediate plate 220, resulting in a good limiting effect.

[0054] The indoor condenser manifold assembly provided in this embodiment, by setting a flow guide 300 in the manifold body 100, accelerates the flow of refrigerant to a position away from the inlet of the manifold body 100, so that the flow distribution of refrigerant is uniform, the heat exchange is uniform, and the temperature of the air outlet surface is uniform.

[0055] This embodiment also provides an indoor condenser, which includes an inlet pipe 001 and an indoor condenser manifold assembly. The inlet pipe 001 is inserted into the second pipe hole 212 of the connecting pipe 210, and the inlet pipe 001 is connected to the first end 301 of the guide member 300. The indoor condenser has at least the advantage of good temperature uniformity of the air outlet surface.

[0056] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An indoor condenser manifold assembly, characterized in that, include: The manifold body (100) and the guide member (300) are provided with a guide channel. The guide member (300) has a first end (301) and a second end (302) in the extension direction of the guide channel. The inner diameter of the guide channel gradually decreases from the first end (301) to the second end (302), and one end of the guide channel extends to the second end (302). The second end (302) is inserted into the manifold body (100). The first end (301) is used to connect with the inlet pipe (001).

2. The indoor condenser manifold assembly according to claim 1, characterized in that: The flow guide (300) includes a tube body (310) and a limiting protrusion (320), the limiting protrusion (320) being connected to the tube body (310) and protruding from the outer wall of the tube body (310); at least a portion of the lumen of the tube body (310) is configured as the flow guide channel; the limiting protrusion (320) abuts against the manifold body (100) to limit the depth to which the tube body (310) is inserted into the manifold body (100).

3. The indoor condenser manifold assembly according to claim 2, characterized in that: The limiting protrusion (320) is configured as an annular protrusion, and the limiting protrusion (320) is arranged around the axis of the tube body (310).

4. The indoor condenser manifold assembly according to claim 2, characterized in that: The tube body (310) and the limiting protrusion (320) are configured as an integral structure.

5. The indoor condenser manifold assembly according to claim 2, characterized in that: The diameter of at least a portion of the outer circumferential surface of the tube (310) gradually decreases in the direction from the first end (301) to the second end (302), and the outer diameter of the second end (302) is smaller than the outer diameter of the first end (301).

6. The indoor condenser manifold assembly according to any one of claims 2-5, characterized in that: The indoor condenser manifold assembly also includes a connecting unit (200), which is installed at the end of the manifold body (100), and the manifold body (310) is connected to the connecting unit (200).

7. The indoor condenser manifold assembly according to claim 6, characterized in that: The connecting unit (200) includes a connecting pipe (210), an intermediate plate (220), and an end plate (230) connected in sequence; a first pipe joint (221) is protruding from the first plate surface of the intermediate plate (220), the connecting pipe (210) is sleeved on the outside of the first pipe joint (221), and the first pipe joint (221) is located inside the connecting pipe (210); the second plate surface of the intermediate plate (220) is abutted to the end plate (230), and the intermediate plate (220) and the end plate (230) are fixedly connected; the end plate (230) is provided with an assembly hole (231) communicating with the first pipe joint (221); a second pipe joint (232) is provided on the side of the end plate (230) away from the second plate surface, and the cavity of the second pipe joint (232) communicates with the assembly hole (231); The second pipe connector (232) is inserted into the manifold body (100) and the two are fixedly fitted together; the connecting pipe (210) is used for the insertion of the inlet pipe (001).

8. The indoor condenser manifold assembly according to claim 7, characterized in that: The end plate (230) is provided with a rivet strip (233), and the intermediate plate (220) is fixedly connected to the end plate (230) through the rivet strip (233).

9. The indoor condenser manifold assembly according to claim 7, characterized in that: The outer wall of the second pipe connector (232) is provided with multiple grooves, and part of the manifold body (100) is engaged in the multiple grooves to realize the riveting fit between the second pipe connector (232) and the manifold body (100).

10. An indoor condenser, characterized in that, The indoor condenser includes: The inlet pipe (001) and the indoor condenser manifold assembly according to any one of claims 1-9, wherein the inlet pipe (001) is connected to the manifold body (100) and the inlet pipe (001) is connected to the first end (301) of the guide member (300).

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