Filter component for a liquid reservoir, integrally welded liquid reservoir, and parallel-flow subcooled condenser

Abstract

The present invention relates to a filtering component for a liquid storage device, an integrally welded liquid storage device, and a parallel flow subcooling condenser. The filtering component includes an upper support plate, a mesh filter cartridge, and a bracket, and the upper support plate, the mesh filter cartridge, and the bracket are all made of stainless steel material. The upper support plate is a flanged plate with an annular slot, the mesh filter cartridge is a bottomed cylindrical structure with an upward flange, and the bracket is a U-shaped bracket with an upward flange, the depth of which is greater than the height of the mesh filter cartridge. The U-shaped bracket is sleeved outside the mesh filter cartridge. The upward flanges of the mesh filter cartridge and the U-shaped bracket are embedded in the annular slot of the upper support plate, and the three are fixed into an integral structure by flanging. The upper and lower end covers of the integrally welded liquid storage device are welded to the cylinder body, and this filtering component is used in the cylinder body. The liquid storage device welded on the parallel flow subcooling condenser uses this integrally welded liquid storage device. The filtering component of the present invention meets the welding process requirements of the liquid storage device, and the liquid storage device of the present invention has good sealing performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive air conditioners, and particularly relates to a filter component for a liquid receiver, an integrally welded liquid receiver, and a parallel flow subcooled condenser. Background Art

[0002] The liquid receiver has functions such as drying, filtering, gas-liquid separation, and storing refrigerant, and is generally used in combination with a parallel flow condenser; in the prior art, the refrigerant pipeline connecting the condenser and the liquid receiver is cancelled, the product structure of the liquid receiver is simplified and its shape is changed, the manifold and the cylinder are assembled and combined, and refrigerant flow outlets and return ports are punched at corresponding positions. Between the refrigerant flow outlet and the return port, a spacer is installed in the manifold, and a desiccant and a filter element are installed in the cylinder. A threaded plug with a sealing ring is used for fastening and sealing. The sealing ring of this technology is made of rubber material, and the filter element is made of plastic material, which is not resistant to high temperature and has certain flammability; moreover, the production and manufacturing cost is high and the market leakage rate is high. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a filter component for a liquid receiver, an integrally welded liquid receiver, and a parallel flow subcooled condenser.

[0004] One of the above-mentioned purposes of the present invention is achieved by the following technical solution:

[0005] A filter component for a liquid receiver, the filter component includes an upper support plate, a mesh filter cylinder, and a bracket. The upper support plate, the mesh filter cylinder, and the bracket are all made of stainless steel material; the upper support plate is a flanged plate with an annular slot, the mesh filter cylinder is a bottomed cylinder structure with an upward flange, the bracket is a U-shaped bracket with an upward flange, the depth of the U-shaped bracket is greater than the height of the mesh filter cylinder, and the U-shaped bracket is sleeved outside the mesh filter cylinder; the upward flange of the mesh filter cylinder and the upward flange of the U-shaped bracket are embedded in the annular slot of the upper support plate, and the upper support plate, the mesh filter cylinder, and the U-shaped bracket are fixed into an integral structure by flanging.

[0006] Further: The upper support plate and the mesh filter cylinder are both formed by stamping, and the bracket is formed by bending a sheet.

[0007] Another of the above-mentioned purposes of the present invention is achieved by the following technical solution:

[0008] An integrally welded liquid storage device includes a cylinder body, an upper end cover, a lower end cover, a filtering member and a bagged desiccant. An inlet and an outlet are arranged on the side wall of the cylinder body. The filtering member adopts the above-mentioned filtering member for the liquid storage device. The upper end cover is fixedly connected to the upper port of the cylinder body by brazing and sealing. The bagged desiccant and the filtering member are loaded into the cylinder body from top to bottom. The lower end of the bagged desiccant contacts the upper end of the upper support plate of the filtering member. The lower end cover is fixedly connected to the lower port of the cylinder body by full-circle flame welding or gas shielded welding. The inner end surface of the lower end cover is in pressing contact with the bottom horizontal side of the U-shaped bracket of the filtering member to form a lower limit for the filtering member. A plurality of inner convex points are arranged on the side wall of the cylinder body near the lower part along the circumferential direction. The plurality of inner convex points contact the upper end of the upper support plate of the filtering member to form an upper limit for the filtering member. A fitting gap is left between the outer ring surface of the upper support plate of the filtering member and the inside of the cylinder body, and the fitting gap is smaller than the particle size of the filtered impurities. The inlet on the cylinder body is located above the position where the bagged desiccant is loaded, and the outlet on the cylinder body is located at a position corresponding to the mesh filter cartridge of the filtering member.

[0009] Further: The plurality of inner convex points on the cylinder body are formed by stamping.

[0010] The third of the above objects of the present invention is achieved by the following technical solution:

[0011] A parallel flow subcooled condenser includes a condenser core body and a liquid storage device. The condenser core body mainly includes two liquid collecting pipes, flat pipes arranged between the two liquid collecting pipes for allowing the refrigerant to flow through, and fin belts arranged between the flat pipes. A refrigerant inlet and a refrigerant outlet are formed on one side liquid collecting pipe. The outer side of the other side liquid collecting pipe is brazed to the cylinder body of the liquid storage device, and an upper through-flow hole and a lower through-flow hole are arranged between the other side liquid collecting pipe and the cylinder body of the liquid storage device. It is characterized in that: The liquid storage device adopts the above-mentioned integrally welded liquid storage device, and the upper end cover of the liquid storage device and the cylinder body are integrally welded and formed during the brazing assembly of the condenser core body, and the lower end cover of the liquid storage device and the cylinder body are welded and formed after the brazing of the condenser core body.

[0012] The advantages and positive effects of the present invention are as follows:

[0013] 1. The filtering member of the present invention is composed of three parts: an upper support plate, a mesh filter cartridge and a bracket. All three parts are made of stainless steel material. Compared with the existing rubber and plastic filter elements, it has better high-temperature resistance and meets the process requirements for welding the end cover and the cylinder body. And it has good corrosion resistance and will not corrode and deteriorate during long-term subsequent use, which is beneficial to ensuring the long-term stable use of the liquid storage device.

[0014] 2. The upper support plate in the filtering component of the present invention can bear the weight of the bagged desiccant, playing a supporting role, and having elasticity. During assembly, it can effectively absorb the processing and assembly tolerances, forming a tight fit with the cylinder body; the height difference between the bracket and the mesh filter cylinder in the filtering component can effectively reduce the heat conduction during welding, avoid burning the outer diameter of the edge of the mesh filter cylinder, and ensure the fitting tolerance between the filtering component and the inner wall surface of the cylinder body, ensuring effective filtration while realizing the smooth assembly of the filtering component.

[0015] 3. The filtering component of the present invention is respectively upper-limited and lower-limited by the integrally formed inner convex points on the cylinder body and the inner end surface of the lower end cover, ensuring that the filter mesh component is stably fixed inside the cylinder body, with the advantages of simplified structure and convenient assembly.

[0016] 4. This integrally welded liquid storage device fixedly connects the openings at both ends of the cylinder body and the two end covers by welding, ensuring the long-term sealing stability of the liquid storage device; the filter element of this integrally welded liquid storage device adopts a split combination structure made of stainless steel, which can be realized by ordinary conventional processing methods, while the existing filter element is made of plastic material and is realized by mold injection, with high mold development cost. Therefore, compared with the existing structure, this integrally welded liquid storage device reduces the manufacturing cost.

[0017] 5. This parallel-flow subcooling condenser adopts the above-mentioned integrally welded liquid storage device, with the advantages of low manufacturing cost and good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the filtering component of the present invention;

[0019] Figure 2 is the split structural schematic diagram of the filtering component of the present invention;

[0020] Figure 3 is the overall external appearance schematic diagram of the integrally welded liquid storage device of the present invention;

[0021] Figure 4 is the split structural schematic diagram of the integrally welded liquid storage device of the present invention;

[0022] Figure 5 is the partial cross-sectional view of the integrally welded liquid storage device of the present invention

[0023] Figure 6 is the overall structural schematic diagram of a parallel-flow subcooling condenser of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] The structure of the present invention will be further described below in conjunction with the drawings and through embodiments. It should be noted that this embodiment is narrative rather than restrictive.

[0025] Please refer toFigure 1-2 , a filter member 1 for a liquid reservoir. The filter member is a split assembly, made of a metal material, preferably made of stainless steel. It includes an upper support plate 1.1, a mesh filter cartridge 1.2, and a bracket 1.3. The upper support plate has a border plate with an annular slot 1.1.1, formed by stamping. The annular slot is used to cooperate with the upper part of the mesh filter cartridge and the upper part of the bracket. The mesh filter cartridge is a cylindrical structure with an upper flanging and a bottom at the top and bottom respectively, integrally formed by stamping a flat filter screen, and the mesh number can be selected according to requirements. The bracket is a U-shaped bracket. The upper parts of the two parallel vertical sides of the U-shaped bracket are provided with upper flangings. The U-shaped bracket is formed by bending a sheet. The depth of the U-shaped bracket after forming is greater than the height of the mesh filter cartridge after forming. The U-shaped bracket is sleeved outside the mesh filter cartridge. The two sides of the U-shaped bracket can contact or not contact the outer surface of the mesh filter cartridge, playing a protective role for the internal mesh filter cartridge and ensuring the structural stability and firmness of the entire filter member. The mesh filter cartridge is concentrically fitted with the upper support plate. The upper flanging 1.2.1 of the mesh filter cartridge and the upper flanging 1.3.1 of the U-shaped bracket are inserted into the annular slot of the upper support plate. The upper support plate, the mesh filter cartridge, and the U-shaped bracket are fixed into an integral structure by bordering. Specifically, first elastically deform the upper flanging of the mesh filter cartridge and the upper flanging of the bracket and then insert them into the annular slot on the upper support plate. After insertion, flatten the upper support plate, and form a border fixed connection for the upper flanging of the mesh filter cartridge and the upper flanging of the bracket through the upper support plate.

[0026] Please refer to Figure 3-5, An integrally welded liquid reservoir mainly includes a cylinder body 2, an upper end cover 3, a lower end cover 5, a filtering member 1, and a bagged desiccant 4. An inlet 2.1 and an outlet 2.2 are provided on the side wall of the cylinder body. The invention point is that the filtering member adopts the above-mentioned combined filtering member. The cylinder body is machined from an aluminum profile, the upper and lower end covers are formed by stamping aluminum plates (with double-sided composite layers), and the bagged desiccant is formed by sewing or ultrasonic welding after non-woven fabric is filled with XH-7, XH-9 or equivalent molecular sieve. The upper end cover is fixedly connected to the upper port of the cylinder body by brazing and sealing. The bagged desiccant and the filtering member are loaded into the cylinder body from top to bottom. The lower end of the bagged desiccant contacts the upper end of the upper support plate of the filtering member. The lower end cover is fixedly connected to the lower port of the cylinder body by full-circumference flame welding or gas shielded welding. The inner end surface of the lower end cover presses against and contacts the bottom horizontal edge of the U-shaped bracket of the filtering member to form a lower limit for the filtering member. A plurality of inner convex points 2.3 are arranged on the side wall of the cylinder body near the lower part in the circumferential direction. The plurality of inner convex points are preferably formed by stamping. The plurality of inner convex points contact the upper end of the upper support plate of the filtering member to form an upper limit for the filtering member. A fitting gap is left between the outer circumferential surface of the upper support plate of the filtering member and the inner part of the cylinder body. The fitting gap is smaller than the particle size of the filtered impurities to prevent the impurities in the refrigerant from passing through this gap. The fitting gap generally takes 0 - 0.5 mm. The inlet on the cylinder body is located above the position where the bagged desiccant is loaded, and the outlet on the cylinder body is located at a position corresponding to the mesh filter cartridge of the filtering member.

[0027] The upper support plate of the above-mentioned filtering member plays a supporting role for the bagged desiccant on the one hand and a fitting role with the inner cavity wall of the cylinder body on the other hand. The fitting gap between its outer circumferential surface and the inner wall surface of the cylinder body should ensure that the filtered impurities cannot pass through. The mesh filter cartridge plays a role in filtering the refrigerant. Since the strength of the mesh filter cartridge is not high, an overall strengthening effect is achieved by externally clamping a U-shaped bracket. At the same time, a certain distance is left between the bottom of the mesh filter cartridge and the horizontal edge of the U-shaped bracket to prevent the mesh filter cartridge and the upper support plate from being burned during the welding of the lower end cover.

[0028] This integrally welded liquid reservoir can be directly welded to the liquid collecting pipe on one side of the condenser, or can be connected to the condenser through an external pipeline in cooperation with a fixing bracket.

[0029] Please refer to Figure 6, A parallel-flow subcooling condenser, comprising a condenser core body 6 and a liquid receiver. The condenser core body mainly includes two liquid collecting pipes, flat pipes brazed between the two liquid collecting pipes for allowing the refrigerant to flow through, and fin tapes brazed between the flat pipes. A refrigerant inlet 6.1 and a refrigerant outlet 6.2 are provided on one side liquid collecting pipe. The outer side of the other liquid collecting pipe is brazed to the cylinder body of the liquid receiver, and an upper flow-through hole and a lower flow-through hole are provided between the other liquid collecting pipe and the cylinder body of the liquid receiver. The refrigerant flows from the condenser core body into the liquid receiver through the upper flow-through hole, and the refrigerant entering the liquid receiver flows back into the interior of the condenser core body through the lower flow-through hole after removing impurities through a filtering member. The inventive point is that the liquid receiver adopts the above-mentioned integrally welded liquid receiver, and the upper end cover of the liquid receiver and the cylinder body are integrally welded and formed when the condenser core body is brazed and assembled, and the lower end cover of the liquid receiver and the cylinder body are welded and formed after the condenser core body is brazed and formed.

[0030] In this parallel-flow subcooling condenser, different forms of partitions are provided in the liquid collecting pipes on both sides to form different refrigerant distribution modes, such as common forms like U-shaped, N-shaped, M-shaped, etc. It is not restricted in this technical solution.

[0031] The working principle of this parallel-flow subcooling condenser is as follows: The refrigerant enters the part of the flat pipes in the upper part of the condenser core through the refrigerant inlet provided on one side liquid collecting pipe, flows horizontally through this part of the flat pipes into the liquid collecting pipe on the other side, and then enters the liquid receiver through the upper flow-through hole between the liquid collecting pipe on the other side and the liquid receiver. It flows from top to bottom in the liquid receiver, and impurities are filtered through the filtering member, and then flows back to the liquid collecting pipe on the other side through the lower flow-through hole between the liquid receiver and the liquid collecting pipe on the other side. According to the refrigerant distribution mode, it travels back and forth once or multiple times in the liquid collecting pipes on both sides, and finally is discharged from the entire condenser core through the refrigerant outlet on one side liquid collecting pipe.

[0032] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art can understand that: within the spirit scope of the present invention and the appended claims, various substitutions, changes, and modifications are possible. Therefore, the scope of the present invention is not limited to the content disclosed in the embodiments and drawings.

Claims

1. A filter member for a liquid reservoir, characterized in that: The filter component includes an upper support plate, a mesh filter cartridge, and a bracket, and the upper support plate, the mesh filter cartridge, and the bracket are all made of stainless steel; the upper support plate is a flanged plate with an annular slot, the mesh filter cartridge is a bottomed cylindrical structure with an upward flange, the bracket is a U-shaped bracket with an upward flange, the depth of the U-shaped bracket is greater than the height of the mesh filter cartridge, and the U-shaped bracket is sleeved outside the mesh filter cartridge; the upward flanges of the mesh filter cartridge and the U-shaped bracket are fitted into the annular slot of the upper support plate, and the upper support plate, the mesh filter cartridge, and the U-shaped bracket are fixed into an integral structure by flanging.

2. The filter member for a liquid reservoir according to claim 1, characterized in that: Both the upper support plate and the mesh filter cartridge are formed by stamping, and the bracket is formed by bending a sheet.

3. An integrally welded liquid reservoir, comprising a cylinder body, an upper end cover, a lower end cover, a filtering member and a bagged desiccant. An inlet and an outlet are provided on the side wall of the cylinder body. It is characterized in that: The filter component adopts the filter component for the liquid storage container described in Claim 1 or 2. The upper end cover is fixedly connected to the upper port of the cylinder body by brazing and sealing. The bagged desiccant and the filter component are loaded into the cylinder body from top to bottom. The lower end of the bagged desiccant contacts the upper end of the upper support plate of the filter component. The lower end cover is fixedly connected to the lower port of the cylinder body by full-circumference flame welding or gas shielded welding; the inner end face of the lower end cover presses against and contacts the bottom horizontal edge of the U-shaped bracket of the filter component to form a lower limit for the filter component. A plurality of inner convex points are arranged on the side wall of the cylinder body near the lower part in the circumferential direction, and the plurality of inner convex points contact the upper end of the upper support plate of the filter component to form an upper limit for the filter component; there is a fitting gap between the outer ring surface of the upper support plate of the filter component and the inside of the cylinder body, and this fitting gap is smaller than the particle size of the filtered impurities; the liquid inlet on the cylinder body is located above the position where the bagged desiccant is loaded, and the liquid outlet on the cylinder body is located at a position corresponding to the mesh filter cartridge of the filter component.

4. The integrated welded liquid storage device according to claim 3, wherein: The plurality of inner convex points on the cylinder body are formed by stamping.

5. A parallel-flow subcooled condenser includes a condenser core body and a liquid receiver. The condenser core body mainly includes two liquid collecting pipes, flat tubes arranged between the two liquid collecting pipes for allowing the refrigerant to flow through, and fin tapes arranged between the flat tubes. A refrigerant inlet and a refrigerant outlet are formed on one side of the liquid collecting pipe. The outer side of the other liquid collecting pipe is brazed to the cylinder body of the liquid receiver, and an upper flow-through hole and a lower flow-through hole are arranged between the other liquid collecting pipe and the cylinder body of the liquid receiver. It is characterized in that: The liquid storage container adopts the integrally welded liquid storage container described in Claim 3 or 4. The upper end cover of the liquid storage container and the cylinder body are integrally welded and formed during the brazing assembly of the condenser core body. The lower end cover of the liquid storage container is welded and formed after the condenser core body is brazed and formed.

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