Refrigerant distributor body assembly, refrigerant distributor, and refrigeration system

Abstract

The utility model provides a kind of body assembly for refrigerant distributor, refrigerant distributor and refrigeration system, body assembly for refrigerant distributor includes hollow body and lining plate.Hollow body has the assembly end for gathering refrigerant and open mouth.Hollow body is inlaid welded on the assembly end of lining plate, and the accommodating cavity for distributing or collecting refrigerant is surrounded in hollow body, and multiple branch pipe holes for communicating accommodating cavity are formed in lining plate.Wherein, the assembly end of hollow body is formed with the blocking component abutting lining plate away from one end of accommodating cavity, the blocking component is configured to provide bearing support for lining plate in the axial direction of hollow body, and the size L0 of blocking component in the radial direction of hollow body satisfies: L0≥0.3mm.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration accessories, and in particular to a body assembly for a refrigerant manifold, a refrigerant manifold, and a refrigeration system. Background Technology

[0002] A refrigerant manifold consists of a distributor and a collector. The distributor is located on the inlet side of the heat exchanger and is used to distribute the throttled gas-liquid two-phase refrigerant equally and evenly into each flow path of the heat exchanger. The collector is located on the outlet side of the heat exchanger and is used to collect the refrigerant after heat exchange in each flow path. Traditional refrigerant manifolds mostly adopt an integrated structure, which is not only difficult and costly to manufacture, but also difficult to guarantee the consistency after manufacturing. To solve this problem, Chinese patent CN216204507U proposes a distributor structure combining a stretched cylinder and a liner. However, it still has the following limitations in actual manufacturing: First, the branch pipe holes on the cylinder are close to the cylinder's peripheral wall, making it difficult to form using a low-cost stamping process, and usually requiring secondary processing by laser cutting; Second, the rounded corners between the bottom wall and the peripheral wall of the stretched cylinder affect the assembly of the liner, and the liner needs to be additionally chamfered; Third, the metal plastic forming efficiency of the cylinder is low and the material loss is large.

[0003] To address the aforementioned shortcomings, the inventors further improved and proposed... Figure 1 The distributor body shown is a cylindrical tube 1A, an end cap 1B, and an end plate 1C. The end cap 1B is sealed and welded to the inlet end of the cylindrical tube 1A and has an inlet hole. The end plate 1C is embedded in and sealed and welded to the outlet end of the cylindrical tube 1A, and has a distribution hole formed by stamping. This structure not only simplifies the structure of the distributor body but also effectively solves the problems of cylinder machining and liner assembly in CN216204507U. However, this distributor body structure is difficult to meet the requirements of burst pressure testing and repeated pressure resistance testing when the radial dimension of the cylindrical tube 1A is large or the pressure is high.

[0004] To address this, the inventors attempted to increase the wall thickness of the cylindrical tube 1A. This solution improved the pressure-bearing capacity of the distributor body to some extent, but the effect was not significant. Furthermore, the inventors also tried increasing the thickness of the end plate 1C. This solution effectively improved the overall pressure-bearing capacity of the distributor body, but increasing the thickness of the liner made it difficult to machine the distribution holes, making stamping impossible and laser cutting extremely difficult. In addition, an overlapping solution with multiple liners was also tried. This solution improved the overall pressure-bearing capacity of the distributor body and solved the problem of difficult-to-machine distribution holes, but it introduced new problems in welding. Specifically, during brazing, a large amount of brazing material would capillarily penetrate into the overlapping gap between adjacent liners, leading to welding quality problems such as incomplete welds and broken welds between the liners and the cylindrical tube 1A, resulting in welding leaks. Figure 1The distributor body shown in the figure still cannot simultaneously take into account the overall pressure resistance, processing technology, and welding safety of the product. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a refrigerant manifold body assembly, a refrigerant manifold, and a refrigeration system.

[0006] To achieve the above objectives, the first aspect of this utility model provides a body assembly for a refrigerant manifold, comprising a hollow body and a liner. The hollow body has a collecting end for collecting refrigerant and an open mounting end. The liner is embedded and welded to the mounting end of the hollow body, forming a receiving cavity within the hollow body for distributing or collecting refrigerant. The liner has multiple branch pipe holes communicating with the receiving cavity. A blocking member is formed on the mounting end of the hollow body, abutting against the end of the liner away from the receiving cavity. The blocking member is configured to provide load-bearing support for the liner in the axial direction of the hollow body, and the radial dimension L0 of the blocking member in the hollow body satisfies: L0 ≥ 0.3 mm.

[0007] According to an embodiment of the first aspect of the present invention, the dimension L0 of the blocking component in the radial direction of the hollow body satisfies: 0.5mm≤L0≤L1, where L1 is the shortest distance from the edge of the branch hole to the edge of the liner.

[0008] According to an embodiment of the first aspect of the present invention, the blocking component is an annular retaining ring, which abuts against the end face of the liner plate on the outer periphery of the branch pipe hole, and the outer peripheral wall of the annular retaining ring is welded to the inner peripheral wall of the assembly end of the hollow body.

[0009] According to an embodiment of the first aspect of the present invention, the blocking component includes a plurality of arc-shaped baffles, which are distributed circumferentially on the end face of the liner plate on the outer periphery of the branch pipe hole, and the outer peripheral wall of each arc-shaped baffle is welded to the inner peripheral wall of the assembly end of the hollow body.

[0010] According to an embodiment of the first aspect of the present invention, the blocking component, the liner, and the hollow body are connected by brazing, and the brazing layer fills the gap between the outer peripheral wall of the liner and the inner peripheral wall of the hollow body, the gap between the outer peripheral wall of the blocking component and the inner peripheral wall of the hollow body, and the gap between the end of the blocking component and the end of the liner.

[0011] According to an embodiment of the first aspect of the present invention, the blocking component includes an axial connecting part and a radial abutting part. The axial connecting part is welded to the inner peripheral wall of the assembly end of the hollow body, and the radial abutting part abuts against the end face of the liner plate on the outer periphery of the branch pipe hole.

[0012] According to an embodiment of the first aspect of the present invention, the blocking component is a limiting step formed on the inner peripheral wall of the hollow body assembly end, and the end face of the liner plate on the outer periphery of the branch pipe hole abuts against the limiting step.

[0013] According to an embodiment of the first aspect of the present invention, the blocking component is a positioning protrusion ring or multiple positioning protrusions formed on the peripheral wall of the assembly end of the hollow body, and the positioning protrusion ring or positioning protrusions protrude into the inner cavity of the hollow body.

[0014] According to an embodiment of the first aspect of the present invention, the assembly end of the hollow body is bent inward to form a blocking component, and along the axial direction of the hollow body, the bent end of the assembly end is projected onto the end face of the liner plate on the outer periphery of the branch hole.

[0015] According to an embodiment of the first aspect of the present invention, the hollow body is an end cap, the small-diameter end of the end cap serves as a collection end, and its large-diameter end forms an open assembly end.

[0016] Alternatively, the hollow body includes an end cap and a tube, with the small-diameter end of the end cap serving as the collection end, its large-diameter end connected to one end of the tube, and the other end of the tube serving as the assembly end of the hollow body.

[0017] A second aspect of this utility model also provides a refrigerant manifold, which distributes refrigerant to multiple heat exchange tubes within a refrigeration system heat exchanger or collects refrigerant within multiple heat exchange tubes. The refrigerant manifold includes a main body assembly for the refrigerant manifold and multiple branch pipes, the branch pipes being welded to multiple branch pipe holes in the inner lining plate of the main body assembly for the refrigerant manifold.

[0018] A third aspect of this utility model also provides a refrigeration system, which includes the aforementioned refrigerant manifold.

[0019] In summary, the refrigerant manifold body assembly provided by this utility model has a blocking component at the assembly end of the hollow body. This blocking component abuts against the end of the liner away from the receiving cavity, providing the liner with a supporting force opposite to the refrigerant pressure inside the receiving cavity. This comprehensively improves the pressure-bearing capacity of the refrigerant manifold body assembly, ensuring that its burst pressure and repeated pressure resistance meet the standard requirements of the refrigeration system. At the same time, this method improves pressure resistance without altering the liner structure, allowing for the continued use of simple stamping processes to machine the branch pipe holes, thus greatly simplifying the manufacturing process.

[0020] Furthermore, the blocking component is configured as an annular retaining ring or multiple arc-shaped baffles welded to the inner peripheral wall of the hollow body. This configuration not only provides the blocking component with excellent connection strength, but also allows for easy adjustment of the radial dimensions of the annular retaining ring or arc-shaped baffles to accommodate the pressure requirements of different refrigerant manifold specifications, significantly enhancing the feasibility and compatibility of the process. In addition, the annular retaining ring or arc-shaped baffles abut against the end face of the liner plate on the outer periphery of the branch pipe hole, effectively preventing the blocking component from interfering with the branch pipe assembly.

[0021] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 The diagram shown is a structural schematic of the existing distributor body.

[0023] Figure 2 The diagram shown is a structural schematic of the refrigerant manifold body assembly provided in Embodiment 1 of this utility model.

[0024] Figure 3 As shown Figure 2 A cross-sectional schematic diagram.

[0025] Figure 4 As shown Figure 3 Enlarged diagram of point A in the middle.

[0026] Figure 5 The diagram shown is a structural schematic of the body assembly for a refrigerant manifold provided in another embodiment of this utility model.

[0027] Figure 6 The diagram shown is a structural schematic of the body assembly for a refrigerant manifold provided in another embodiment of this utility model.

[0028] Figure 6A As shown Figure 6 Enlarged diagram of point B in the middle.

[0029] Figure 7 The diagram shown is a cross-sectional view of the body assembly for a refrigerant manifold provided in another embodiment of the present invention.

[0030] Figure 8 The diagram shown is a structural schematic of the refrigerant manifold provided in Embodiment 1 of this utility model.

[0031] Figure 9 As shown Figure 8 A cross-sectional schematic diagram.

[0032] Figure 10 The diagram shown is a structural schematic of the refrigerant manifold provided in Embodiment 2 of this utility model.

[0033] Figure 11 The figure shown is a cross-sectional schematic diagram of the body assembly for the refrigerant manifold provided in Embodiment 3 of this utility model.

[0034] Figure 12 As shown Figure 11 Enlarged diagram of point C in the middle.

[0035] Figure 13 The diagram shown is a structural schematic of the refrigerant manifold provided in Embodiment 3 of this utility model.

[0036] Figure 14The figure shown is a cross-sectional schematic diagram of the refrigerant manifold provided in Embodiment 3 of this utility model.

[0037] Figure 15 The diagram shown is a cross-sectional view of the body assembly for a refrigerant manifold provided in another embodiment of the present invention.

[0038] Figure 16 The diagram shown is a cross-sectional view of the body assembly for a refrigerant manifold provided in another embodiment of the present invention.

[0039] Figure 17 The diagram shown is a cross-sectional view of the body assembly for a refrigerant manifold provided in another embodiment of the present invention. Detailed Implementation

[0040] Example 1

[0041] To address the problems encountered in the actual machining of the distributor structure formed by the combination of the stretching cylinder and the liner, the inventors proposed... Figure 1 The distributor body structure shown is characterized by its relatively weak overall pressure-bearing capacity, making it unsuitable for high-pressure applications. To address this, the inventors explored various solutions. While increasing the liner thickness effectively improves pressure-bearing capacity, it introduces new challenges in molding processes and welding performance. In other words, existing distributor bodies struggle to simultaneously achieve optimal overall pressure-bearing capacity, processing technology, and welding reliability.

[0042] In view of this, this embodiment provides a refrigerant manifold body assembly that can simultaneously consider the overall pressure-bearing performance of the product, the forming and processing of parts, and the welding reliability. For example... Figure 2 , Figure 3 as well as Figure 4 As shown, the refrigerant manifold body assembly 10 includes a hollow body 1 and a liner 2. The hollow body 1 has a collecting end 11 for collecting refrigerant and an open mounting end 12. The liner 2 is embedded and welded to the mounting end 12 of the hollow body, forming a receiving cavity 13 for distributing or collecting refrigerant within the hollow body 1. The liner 2 has multiple branch pipe holes 21 communicating with the receiving cavity 13. A blocking member 3 is formed on the mounting end 12 of the hollow body, abutting against the end of the liner 2 away from the receiving cavity 13. The blocking member 3 is configured to provide load-bearing support for the liner 2 in the axial direction of the hollow body 1. The radial dimension L0 of the blocking member 3 in the hollow body 1 (hereinafter referred to as the radial dimension of the blocking member) satisfies: L0 ≥ 0.3 mm. In this embodiment, the end of the liner 3 away from the receiving cavity 13 refers to the outer end of the liner 2, which includes the outer end face of the liner 2 and the transition angle between the outer end face of the liner and the peripheral wall of the hollow body 1.

[0043] In the refrigerant manifold body assembly provided in this embodiment, the blocking member 3 abuts against the end of the liner 2 away from the receiving cavity 13. When the liner 2 is subjected to refrigerant pressure from the receiving cavity 13, the blocking member 3 provides the liner 2 with a supporting force opposite to the direction of the refrigerant pressure. Based on the welded connection between the liner 2 and the assembly end 12, this further enhances the pressure-bearing capacity of the liner 2 and the hollow body 1 near the liner 2, so that the overall pressure-bearing capacity of the refrigerant manifold body assembly meets the requirements of high-pressure operating conditions. At the same time, since the blocking member 3 is formed at the assembly end 12 of the hollow body, it is independent of the structure of the liner 2 itself (including the thickness of the liner); in other words, the setting of the blocking member 3 does not affect the forming of the branch pipe hole 21 on the liner 2, which can still be processed by a simple stamping process.

[0044] In the refrigerant manifold body assembly provided in this embodiment, the improvement of the overall pressure-bearing capacity of the product no longer depends on the thickness of the liner 2 itself. This not only effectively removes the constraints of pressure-bearing performance and branch pipe hole forming method on the thickness of the liner 2, but also effectively avoids welding leakage problems caused by changes in the liner structure. While improving the pressure-bearing performance based on the blocking component 3, the forming method of the branch pipe hole 21 is simplified and the reliability of the product after welding is ensured, thereby achieving a balance in terms of pressure-bearing performance, forming method, and welding performance.

[0045] In this embodiment, as Figure 3 and Figure 4 As shown, the blocking component 3 is an annular retaining ring with a nearly rectangular longitudinal section. The annular retaining ring abuts against the end face of the liner 2 on the outer periphery of the branch pipe hole 21. The outer peripheral wall of the annular retaining ring is welded to the inner peripheral wall of the assembly end 12 of the hollow body 1. The wall thickness of the annular retaining ring is the radial dimension L0 of the blocking component 3 in the hollow body 1. Specifically, the thicker the wall of the annular retaining ring, the larger its contact area with the end face of the liner 2; correspondingly, the greater the supporting force it provides to the liner 2, thus giving the liner 2 and the nearby hollow body 1 a higher pressure-bearing capacity. Therefore, the refrigerant manifold body assembly provided in this embodiment only requires simple adjustment of the wall thickness of the annular retaining ring to meet the pressure-bearing requirements of refrigerant manifolds of different specifications, and has extremely strong process compatibility. Furthermore, since the annular retaining ring only abuts against the end face of the liner 2 on the outer periphery of the branch hole 21, that is, the dimension L0 of the blocking component 3 in the radial direction of the hollow body 1 is less than the shortest distance L1 from the edge of the branch hole 21 to the edge of the liner 2; this arrangement ensures that the annular retaining ring neither obstructs the branch hole 21 nor affects the assembly of the components at the branch hole 21.

[0046] In this embodiment, as Figure 4As shown, the annular retaining ring, the liner 2, and the hollow body 1, which serve as blocking components 3, are connected by brazing. The brazing layer 4 fills the gaps between the outer peripheral wall of the liner 2 and the inner peripheral wall of the hollow body 1, the gaps between the outer peripheral wall of the blocking component 3 and the inner peripheral wall of the hollow body 1, and the gaps between the end of the blocking component 3 and the end of the liner 2. The blocking component 3 connects the hollow body 1 and the liner 2 respectively through the brazing layer 4. This arrangement greatly increases the brazing connection area of ​​the brazing layer 4, which not only enhances the connection strength of the blocking component 3 but also further improves its support and blocking effect on the liner 2. However, this utility model does not limit this. In other embodiments, the annular retaining ring may be welded only to the inner peripheral wall of the assembly end of the hollow body, and its end face may only abut against the end face of the liner.

[0047] In this embodiment, the annular retaining ring, the liner 2, and the hollow body 1, which serve as the blocking component 3, are all made of stainless steel. The brazing layer 4 includes an oxygen-free copper brazing layer that fills the gap between the outer peripheral wall of the liner 2 and the inner peripheral wall of the hollow body 1, and tin bronze brazing layers that fill the gaps between the outer peripheral wall of the blocking component 3 and the inner peripheral wall of the hollow body 1, as well as the gaps between the end of the blocking component 3 and the end of the liner 2. However, this invention does not limit the scope of the invention in any way. In other embodiments, the annular retaining ring, the liner, and the hollow body can also be integrally welded together. In this case, the brazing layers at the three gaps are formed by the same brazing material, such as oxygen-free copper brazing layers or tin bronze brazing layers.

[0048] To verify the pressure resistance of the refrigerant manifold body assembly provided in this embodiment, based on Figure 3 The refrigerant distributor body structure shown was used to fabricate test samples of various specifications, and based on... Figure 1 A control sample of the corresponding specifications was made based on the existing distributor body structure shown. The test sample and the corresponding control sample were subjected to repeated pressure resistance tests and burst pressure tests. Specifically, in this embodiment, the outer diameter D0 of the hollow body 1 at the assembly point of the liner 2 (i.e.,...) was used. Figure 2 Six test groups were set up for the outer diameter of the central tube 1_2. Each test group included nine test samples with different L0 values ​​and one control sample (i.e., L0 = 0). The wall thickness and outer diameter of the cylindrical tube 1A in the control sample were the wall thickness t0 and outer diameter D0 of the hollow body 1 at the assembly point of the liner 2 in the corresponding test sample, respectively. The thickness of the end plate 1C in the control sample was the same as the thickness t1 of the liner 2 in the test sample.

[0049] 【1】Sample Specifications

[0050] Test Group 1: The outer diameter of the hollow body D0 = 38 mm, the wall thickness of the hollow body t0 = 0.8 mm, the thickness of the liner t1 = 3.0 mm; the shortest distance from the edge of the branch pipe hole to the edge of the liner L1 = 2.5 mm, and the radial dimensions L0 of the blocking components are 0.2 mm, 0.3 mm, 0.5 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.8 mm, and 2.0 mm, respectively.

[0051] Test Group 2: The outer diameter of the hollow body D0 = 45mm, the wall thickness of the hollow body t0 = 0.8mm, the thickness of the liner t1 = 3.0mm; the shortest distance from the edge of the branch pipe hole to the edge of the liner L1 = 2.5mm, and the radial dimensions L0 of the blocking components are 0.2mm, 0.3mm, 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 1.8mm, and 2.0mm respectively.

[0052] Test Group 3: The outer diameter of the hollow body D0 = 54 mm, the wall thickness of the hollow body t0 = 1.0 mm, the thickness of the liner t1 = 3.0 mm; the shortest distance from the edge of the branch pipe hole to the edge of the liner L1 = 2.5 mm, and the radial dimensions L0 of the blocking components are 0.2 mm, 0.3 mm, 0.5 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.8 mm, and 2.0 mm, respectively.

[0053] Test Group 4: The outer diameter of the hollow body D0 = 63.5 mm, the wall thickness of the hollow body t0 = 1.0 mm, the thickness of the liner t1 = 3.0 mm; the shortest distance from the edge of the branch pipe hole to the edge of the liner L1 = 2.5 mm, and the radial dimensions L0 of the blocking components are 0.2 mm, 0.3 mm, 0.5 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.8 mm, and 2.0 mm, respectively.

[0054] Test Group 5: The outer diameter of the hollow body D0 = 72 mm, the wall thickness of the hollow body t0 = 1.2 mm, the thickness of the liner t1 = 4.5 mm; the shortest distance from the edge of the branch pipe hole to the edge of the liner L1 = 2.5 mm, and the radial dimensions L0 of the blocking components are 0.2 mm, 0.3 mm, 0.5 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.8 mm, and 2.0 mm, respectively.

[0055] Test Group 6: The outer diameter of the hollow body D0 = 83 mm, the wall thickness of the hollow body t0 = 1.5 mm, the thickness of the liner t1 = 4.5 mm; the shortest distance from the edge of the branch pipe hole to the edge of the liner L1 = 2.5 mm, and the radial dimensions L0 of the blocking components are 0.2 mm, 0.3 mm, 0.5 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.8 mm, and 2.0 mm, respectively.

[0056] [2] Repeated pressure resistance test methods and standards

[0057] Repeated pressure resistance test method: Connect the collection end of the sample (test sample or control sample) to the pulse pressure test instrument and adjust the test parameters of the pressure instrument.

[0058] Pulsating pressure: Inject VG68# hydraulic oil into the sample, vent the air from the sample, and then seal multiple branch holes on the sample. Apply pressure alternately at a value between 0MPa and 4.2±0.1MPa, with a frequency of 30 times / min and a cycle count of 200,000 times.

[0059] Standard for repeated pressure resistance test: After 200,000 repeated pressure resistance tests, the sample should not leak when kept in water at 4.2 MPa for 3 minutes.

[0060] [3] Burst pressure test methods and standards

[0061] Bursting pressure test method: Connect the collection end of the sample (test sample or control sample) to the hydraulic press, fill the sample with water, expel the air and then seal the multiple branch pipe holes on the sample; pressurize to 12.6MPa, hold the pressure for 1 minute, and continue to pressurize until bursting after passing the test.

[0062] Burst pressure test standard: Hold at 12.6 MPa for 1 minute, the sample should not crack or leak, and the burst pressure of the sample should be greater than the minimum burst pressure specified in the standard; the minimum burst pressure standard is: ① D0≤54mm, minimum burst pressure is 16MPa; ② 63.5mm≤D0≤72mm, minimum burst pressure is 14.5MPa; ③ D0≥83mm, minimum burst pressure is 13MPa.

[0063] Table 1 summarizes the repeated pressure resistance test results of the fifty-four test samples and six control samples in the above six test groups, and Table 2 summarizes the burst pressure test results of the fifty-four test samples and six control samples.

[0064] Analysis of the data in Table 1 shows that adding the blocking component 3 significantly improves the repeated pressure resistance of the test samples. In the three test groups with an outer diameter D0 ≤ 54 mm for the hollow body, the repeated pressure resistance of each test sample after adding the blocking component 3 meets the standard requirements. For the three test groups with D0 ≥ 63.5 mm, when the radial dimension L0 of the blocking component 3 ≥ 0.3 mm, the repeated pressure resistance of the test samples also meets the standard requirements.

[0065] Analysis of the data in Table 2 also shows that the burst pressure of the test sample is effectively increased after adding the blocking component 3. In each test group, when the radial dimension L0 of the blocking component 3 is ≥ 0.3 mm, the burst pressure of the test sample can reach the corresponding minimum burst pressure requirement; and when the radial dimension L0 is ≥ 0.5 mm, the burst pressure of the test sample even exceeds the corresponding minimum burst pressure by 8%.

[0066] Based on the above tests, preferably, in this embodiment, the dimension L0 of the blocking component 3 in the radial direction of the hollow body 1 satisfies: 0.5mm≤L0≤L1, where L1 is the shortest distance from the edge of the branch hole 21 to the edge of the liner 2. However, this utility model does not impose any limitations on this.

[0067] Although this embodiment uses an integral annular retaining ring as an example for the blocking component 3, this utility model does not impose any limitations on it. In other embodiments, such as Figure 5 As shown, the blocking component 3 may also include multiple arc-shaped baffles 31, which are distributed circumferentially on the end face of the liner 2 on the outer periphery of the branch pipe hole 21. The outer peripheral wall of each arc-shaped baffle 31 is welded to the inner peripheral wall of the assembly end 12 of the hollow body 1. Figure 5 In this assembly, multiple arc-shaped baffles 31 are spaced apart along the circumference of the liner 2 and welded to the inner circumferential wall of the assembly end 12. Specifically, the multiple arc-shaped baffles 31, the liner 2, and the hollow body 1 are integrally formed by brazing, and the brazing layer fills the gap between the outer circumferential wall of the liner 2 and the inner circumferential wall of the hollow body 1, the gap between the outer circumferential wall of each arc-shaped baffle 31 and the inner circumferential wall of the hollow body 1, and the gap between the end of each arc-shaped baffle 31 and the end of the liner 2. However, this utility model does not limit this in any way. In other embodiments, the multiple arc-shaped baffles may also be connected end to end along the circumference of the liner.

[0068] Figure 6 The diagram shown is a structural schematic of the blocking component 3 provided in another embodiment of this utility model. Figure 6A for Figure 6 An enlarged view of point B in the middle. Figure 6 and Figure 6A In this embodiment, the blocking component 3 is still an integral annular retaining ring, but it includes an axial connecting portion 32 and a radial abutting portion 33. The axial connecting portion 32 is welded to the inner circumferential wall of the mounting end 12 of the hollow body 1, and the radial abutting portion 33 abuts against the end face of the liner 2 on the outer periphery of the branch hole 21 (i.e., it does not extend to the location of the branch hole 21). In this structure, the longitudinal section of the annular retaining ring is close to L-shaped, and the radial dimension L0 of the blocking component 3 is the sum of the thickness of the axial connecting portion 32 and the radial length of the radial abutting portion 33. Compared to this embodiment... Figure 2 The provided ring-shaped retaining ring structure has a rectangular longitudinal section. Figure 6 and Figure 6AThe structure shown can achieve a larger radial dimension L0 based on a thinner annular retaining ring wall thickness. However, this invention does not limit it in any way. In other embodiments, it is also possible to... Figure 5 The arc-shaped baffle is designed with a longitudinal cross-section that is close to an L-shape.

[0069] In this embodiment, as Figure 2 and Figure 3 As shown, the hollow body 1 includes an end cap 1_1 and a tube body 1_2. The small-diameter end of the end cap 1_1 serves as a collecting end 11, and its large-diameter end is connected to one end of the tube body 1_2. The other end of the tube body 1_2 serves as an assembly end 12 of the hollow body 1. A liner 2 and an annular retaining ring, serving as a blocking component 3, are embedded and welded into the assembly end 12. However, this invention does not limit the scope of the invention in any way. In other embodiments, such as... Figure 7 As shown, the hollow body 1 is the end cap 1_1. The small diameter end of the end cap 1_1 serves as the collection end 11, and its large diameter end forms an open assembly end 12.

[0070] Correspondingly, such as Figure 8 and Figure 9 As shown, this embodiment also provides a refrigerant manifold 100, which includes the aforementioned refrigerant manifold body assembly 10, multiple branch pipes 20, and a manifold 30. The multiple branch pipes 20 are respectively welded to multiple branch pipe holes 21 on the liner plate 2, while the manifold 30 is welded to the manifold end 11 of the hollow body 1. The refrigerant manifold provided in this embodiment is a refrigerant distributor, which distributes refrigerant into multiple heat exchange tubes of the refrigeration system heat exchanger. The refrigerant distributor also includes a partition 40 disposed within the hollow body 1. A cavity 401 with an opening facing the manifold end 11 is formed on the area of ​​the partition 40 opposite to the manifold 30, and the partition 40 at the cavity 401 protrudes and extends towards the side where the assembly end 12 is located. The partition 40 divides the accommodating cavity 13 into a reflective mixing area 131 near the manifold end 11 and including the cavity 401, and a mixing and distribution area 132 near the assembly end 12. The partition 40 has a plurality of partition holes 402 arranged in a ring around the axis of the hollow body 1 and connecting the reflection mixing zone 131 and the mixing distribution zone 132. The plurality of partition holes 402 are configured to correspond one-to-one with the plurality of branch pipe holes, and when projected along the axial direction of the hollow body 1, the plurality of partition holes 402 are located on the outer periphery of the converging end 11.

[0071] The refrigerant manifold provided in this embodiment is a refrigerant distributor that integrates reflection and mixing. However, this utility model does not limit it in any way, and the body assembly of the refrigerant manifold provided in this embodiment is also applicable to refrigerant manifolds with other structures.

[0072] Correspondingly, this embodiment also provides a refrigeration system, which includes Figure 8 The refrigerant manifold shown.

[0073] Example 2

[0074] This embodiment is basically the same as Embodiment 1 and its variations, except that: the refrigerant manifold provided in this embodiment is a collector 100' installed at the heat exchanger outlet to collect refrigerant from multiple heat exchange tubes. Figure 10 As shown, collector 100' includes Figure 2 The refrigerant manifold shown includes a main body assembly 10, multiple branch pipes 20, and a manifold 30. The multiple branch pipes 20 are welded to multiple branch pipe holes 21 on the liner 2, while the manifold 30 is welded to the collecting end 11 of the hollow main body 1. In the collector 100' provided in this embodiment, no components are installed inside the hollow main body 1; the receiving cavity 13 is used to collect the refrigerant flowing in from the multiple branch pipes 20 and output it through the manifold 30.

[0075] Correspondingly, this embodiment also provides a refrigeration system, which includes Figure 10 Collector 100' is shown.

[0076] Regarding the embodiments provided Figure 10 The structure shown can also be installed on the input side of the heat exchanger as a refrigerant distributor in other embodiments, with the refrigerant input from the collection end 11 distributed to the multiple heat exchange tubes of the heat exchanger via multiple branch pipes 20.

[0077] Example 3

[0078] This embodiment is basically the same as Embodiment 1 and its variations, except that the structure of the blocking component 3 is different.

[0079] In this embodiment, as Figure 11 and Figure 12 As shown, the blocking component 3 is a limiting step formed on the inner peripheral wall of the hollow body assembly end 12, and the end face of the liner 2 on the outer periphery of the branch hole 21 abuts against the limiting step. In this structure, the blocking component 3 is integrally formed into the hollow body 1. During assembly, the unreduced diameter converging end 11 of the liner 2 is first assembled into the hollow body 1 and abuts against the limiting step, which serves as the blocking component 3; then, the converging end 11 is reduced in diameter, such as by necking or spinning. In this structure, the limiting step provides pressure support for the liner 2 and also serves as a limiting part for its assembly. In this embodiment, the radial dimension L0 of the blocking component 3 is the radial dimension of the limiting step.

[0080] Correspondingly, Figure 13 and Figure 14 The image shows the refrigerant manifold provided by this utility model. Specifically, Figure 13 This is a refrigerant distributor structure. Figure 14 The refrigerant manifold shown can function as either a refrigerant distributor or a refrigerant collector, depending on its installation location within the refrigeration system.

[0081] This utility model does not limit the specific structure of the blocking component 3. Any structure of the blocking component 3 that can restrict the position of the liner 2 in the axial direction of the hollow body 1 to prevent it from falling off under high pressure is within the protection scope of this utility model. Figure 15 , Figure 16 as well as Figure 17 A refrigerant manifold body assembly provided in another embodiment of the present invention.

[0082] Figure 15 In this structure, the blocking component 3 is a positioning protrusion formed on the circumferential wall of the hollow body assembly end 12. The positioning protrusion protrudes into the inner cavity of the hollow body 1 and abuts against the outer end face of the liner 2 and / or the transition angle on the outer end of the liner 2, providing pressure support for the liner 2. In this structure, the positioning protrusion does not extend to the location of the branch hole 21 in the radial direction of the hollow body; that is, the positioning protrusion does not interfere with the welding assembly at the branch hole 21. Figure 15 In the diagram, the radial dimension L0 of the blocking component 3 is the radial dimension from the inner circumferential wall of the assembly end 12 to the top of the positioning protrusion ring.

[0083] Figure 16 and Figure 15 The structures are basically the same, the difference being that: the blocking component 3 consists of multiple positioning protrusions formed on the periphery of the hollow body assembly end 12. These positioning protrusions protrude into the inner cavity of the hollow body 1, abutting against the outer end face of the liner 2 and / or the transition angle on the outer end of the liner 2, providing pressure support for the liner 2. Similarly, in Figure 16 In the diagram, the radial dimension L0 of the blocking component 3 is the radial dimension from the inner peripheral wall of the assembly end 12 to the top of the positioning protrusion.

[0084] exist Figure 17 In this structure, the assembly end 12 of the hollow body is bent inward to form a blocking component 3, which abuts against the transition angle on the liner 2. This structure limits the liner 2 by reducing the inner diameter of the assembly end 12, thereby providing it with pressure support. Similarly, to avoid the blocking component 3 interfering with the welding assembly at the branch hole 21, the bent end of the assembly end is positioned on the liner end face outside the branch hole 21 when projected along the axial direction of the hollow body 1. Figure 17 In the diagram, the radial dimension L0 of the blocking component 3 is the radial dimension from the inner circumferential wall of the unbent end of the assembly end 12 to the inner circumferential wall of the bent end.

[0085] In summary, the refrigerant manifold body assembly provided by this utility model has a blocking component at the assembly end of the hollow body. This blocking component abuts against the end of the liner away from the receiving cavity, providing the liner with a supporting force opposite to the refrigerant pressure inside the receiving cavity. This comprehensively improves the pressure-bearing capacity of the refrigerant manifold body assembly, ensuring that its burst pressure and repeated pressure resistance meet the standard requirements of the refrigeration system. At the same time, this method improves pressure resistance without altering the liner structure, allowing for the continued use of simple stamping processes to machine the branch pipe holes, thus greatly simplifying the manufacturing process.

[0086] Furthermore, the blocking component is configured as an annular retaining ring or multiple arc-shaped baffles welded to the inner peripheral wall of the hollow body. This configuration not only provides the blocking component with excellent connection strength, but also allows for easy adjustment of the radial dimensions of the annular retaining ring or arc-shaped baffles to accommodate the pressure requirements of different refrigerant manifold specifications, significantly enhancing the feasibility and compatibility of the process. In addition, the annular retaining ring or arc-shaped baffles abut against the end face of the liner plate on the outer periphery of the branch pipe hole, effectively preventing the blocking component from interfering with the branch pipe assembly.

[0087] Although the present invention has been disclosed above by way of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of protection claimed in the claims.

[0088] Table 1

[0089]

[0090]

[0091] Table 2

[0092]

Claims

1. A body assembly for a refrigerant manifold, characterized in that, include: The hollow body has a collection end for collecting refrigerant and an open assembly end; A liner, embedded and welded to the assembly end of the hollow body, surrounds the hollow body to form a accommodating cavity for distributing or collecting refrigerant. The liner has multiple branch pipe holes that connect to the accommodating cavity. The hollow body has a blocking member formed on the assembly end that abuts against the end of the liner away from the accommodating cavity. The blocking member is configured to provide load-bearing support for the liner in the axial direction of the hollow body. The dimension L0 of the blocking member in the radial direction of the hollow body satisfies: L0≥0.3mm.

2. The refrigerant manifold body assembly according to claim 1, characterized in that, The dimension L0 of the blocking component in the radial direction of the hollow body satisfies: 0.5mm≤L0≤L1, where L1 is the shortest distance from the edge of the branch hole to the edge of the liner.

3. The refrigerant manifold body assembly according to claim 1, characterized in that, The blocking component is an annular retaining ring, which abuts against the end face of the liner plate on the outer periphery of the branch pipe hole, and the outer peripheral wall of the annular retaining ring is welded to the inner peripheral wall of the assembly end of the hollow body.

4. The refrigerant manifold body assembly according to claim 1, characterized in that, The blocking component includes multiple arc-shaped baffles, which are distributed circumferentially on the end face of the liner plate on the outer periphery of the branch pipe hole. The outer peripheral wall of each arc-shaped baffle is welded to the inner peripheral wall of the assembly end of the hollow body.

5. The refrigerant manifold body assembly according to claim 3 or 4, characterized in that, The blocking component, the liner, and the hollow body are connected by brazing. The brazing layer fills the gap between the outer peripheral wall of the liner and the inner peripheral wall of the hollow body, the gap between the outer peripheral wall of the blocking component and the inner peripheral wall of the hollow body, and the gap between the end of the blocking component and the end of the liner.

6. The body assembly for a refrigerant manifold according to claim 3 or 4, characterized in that, The blocking component includes an axial connecting part and a radial abutting part. The axial connecting part is welded to the inner circumferential wall of the assembly end of the hollow body, and the radial abutting part abuts against the end face of the liner plate on the outer circumference of the branch pipe hole.

7. The refrigerant manifold body assembly according to claim 1, characterized in that, The blocking component is a limiting step formed on the inner peripheral wall of the hollow body assembly end, and the end face of the liner plate on the outer periphery of the branch pipe hole abuts against the limiting step.

8. The body assembly for a refrigerant manifold according to claim 1, characterized in that, The blocking component is a positioning protrusion ring or multiple positioning protrusions formed on the peripheral wall of the assembly end of the hollow body, and the positioning protrusion ring or positioning protrusions protrude into the inner cavity of the hollow body.

9. The body assembly for a refrigerant manifold according to claim 1, characterized in that, The assembly end of the hollow body is bent inward to form a blocking component. Along the axial direction of the hollow body, the bent end of the assembly end is projected onto the end face of the liner plate on the outer periphery of the branch pipe hole.

10. The body assembly for a refrigerant manifold according to claim 1, characterized in that, The hollow body is an end cap, with the small-diameter end of the end cap serving as the collection end and the large-diameter end forming an open assembly end. Alternatively, the hollow body includes an end cap and a tube, with the small-diameter end of the end cap serving as the collection end, its large-diameter end connected to one end of the tube, and the other end of the tube serving as the assembly end of the hollow body.

11. A refrigerant manifold, characterized in that, The refrigerant manifold distributes refrigerant to multiple heat exchange tubes within the refrigeration system's heat exchanger or collects refrigerant from multiple heat exchange tubes. The body assembly for the refrigerant manifold as described in claim 1; Multiple branch pipes are welded to the multiple branch pipe holes on the inner lining plate of the main body assembly for the refrigerant manifold.

12. A refrigeration system, characterized in that, Includes the refrigerant manifold as described in claim 11.

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