Filter for refrigerating system
By engraving or pressing limiting and positioning protrusions on the inner wall of the filter tube and copper tube joint in the refrigeration system, the problems of complex production and high cost are solved, and simplified, standardized and efficient filter manufacturing is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ZHONGLI REFRIGERATION TECH CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-05-01
AI Technical Summary
The existing manufacturing process for filters used in refrigeration systems is complex and costly. The spun joints are prone to cracking, and the insertion depth of external conduits is difficult to control, making standardized production impossible.
Limiting and positioning protrusions are engraved or pressed on the inner walls of the pipe body and copper pipe joints. The filter screen and external conduit are fixed by welding, which simplifies the production process and ensures sealing and standardized production.
It achieves a simple, reliable, low-cost, and standardized production process, thereby improving production efficiency and the service life of the filter screen.
Smart Images
Figure CN224188808U_ABST
Abstract
Description
A filter for a refrigeration system Technical Field
[0001] This utility model belongs to the field of refrigeration technology, and in particular relates to a filter for refrigeration systems. Background Technology
[0002] Currently, filters used in general refrigeration systems are produced in three ways: First, by spinning the necked-down ends of the main pipe to form the connection of the external conduit. Although spinning is efficient, the spun joint is prone to cracking and requires annealing, making the production process complex and costly. Second, by welding mounting plates onto the inner wall of the main pipe to fix the filter. The disadvantages of this process are that welding and fixing take a long time, resulting in low production efficiency and high production costs. Third, when connecting the external conduit to the necked-down connection, the insertion depth of the external conduit is difficult to control, making standardized production impossible. Summary of the Invention
[0003] The purpose of this utility model is to provide a filter for refrigeration systems that is simple to manufacture, securely fixed, crack-free, has standardized external conduits, and has low production costs.
[0004] The purpose of this utility model is to solve the following problem:
[0005] A filter for a refrigeration system includes a tube body and a filter screen. The tube body is a stainless steel straight tube. Copper pipe joints are welded to the inlet and outlet of the tube body, respectively. Two sets of axially spaced limiting protrusions are engraved or pressed on the inner surface of the inlet side of the tube body. A filter screen clamping groove is formed between the two sets of limiting protrusions. A filter screen is fixed on the filter screen clamping groove. Positioning protrusions are engraved or pressed on the inner surface of the copper pipe joint.
[0006] As a further optimization of the above technical solution, the positioning protrusion is three or more protrusions formed by circumferentially spaced engraving, pressing or welding.
[0007] As a further optimization of the above technical solution, the limiting protrusion is a protrusion ring or annular protrusion formed by circumferentially spaced engraving, pressing or welding.
[0008] As a further optimization of the above technical solution, the copper pipe joint includes a straight pipe-type welding part, a tapered neck, and a straight pipe-type connecting part that are sequentially connected to the inlet or outlet of the pipe body, and the positioning protrusion is provided on the inner surface of the connecting part.
[0009] As a further optimization of the above technical solution, the edge of the filter screen is fixed with an annular clamping part, and the clamping part is fixed on the filter screen clamping groove.
[0010] As a further optimization of the above technical solution, the filter screen is an arc-shaped screen or a conical screen.
[0011] As a further optimization of the above technical solution, a conical spring is provided on the inner wall of the conical mesh to support the conical mesh.
[0012] The advantages of this invention compared to the prior art are:
[0013] 1. This utility model directly engraves or presses limiting protrusions and positioning protrusions on the inner wall of the pipe body and copper pipe joint, which is simple in production process, high in production efficiency and high in yield.
[0014] 2. This utility model uses copper pipe joints welded at the inlet and outlet of the pipe body, which prevents cracking and provides good sealing.
[0015] 3. This utility model directly engraves or presses limiting protrusions on the inner wall of the tube for snap-fit installation of the filter screen. The installation process is simple, fast, and highly efficient.
[0016] 4. This utility model directly engraves or presses positioning protrusions on the inner wall of the copper pipe joint, so that when welding external conduits, the insertion depth of the external conduits is consistent, and standardized production can be achieved.
[0017] 5. This utility model provides a conical spring on the inner wall of the conical filter screen, which can provide better support for the conical screen, strengthen the strength of the filter screen, and effectively extend the service life of the filter screen.
[0018] 6. This utility model has a simple structure, high production efficiency, low production cost, long service life, and is easy to promote and apply. Attached Figure Description
[0019] Figure 1 is a cross-sectional schematic diagram of the filter screen of this utility model, which is an arc-shaped mesh.
[0020] Figure 2 is a cross-sectional schematic diagram of the filter screen of this utility model, which is a conical mesh.
[0021] Figure 3 is a cross-sectional schematic diagram of the filter screen of this utility model, which is a conical mesh and equipped with a conical spring.
[0022] Figure 4 is an enlarged view of part A in Figure 1. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, see Figures 1-4.
[0024] A filter for a refrigeration system includes a tube body 10 and a filter screen 20. The tube body 10 is a stainless steel straight tube. Copper pipe joints 30 are welded to the inlet 12 and outlet 13 of the tube body 10, respectively. Two sets of axially spaced limiting protrusions 11 are engraved or pressed on the inner surface of the inlet 12 side of the tube body 10, and a filter screen clamping groove 14 is formed between the two sets of limiting protrusions 11. The filter screen 20 is fixed on the filter screen clamping groove 14. Positioning protrusions 32 are engraved or pressed on the inner surface of the copper pipe joint 30.
[0025] As a further optimization of the above technical solution, the positioning protrusion 32 is three or more protrusions formed by circumferentially spaced engraving, pressing or welding.
[0026] As a further optimization of the above technical solution, the limiting protrusion 11 is a protrusion ring or annular protrusion formed by circumferentially spaced engraving, pressing or welding.
[0027] As a further optimization of the above technical solution, the copper pipe connector 30 includes a straight pipe-type welding part 34 that is welded to the inlet or outlet of the pipe body 10, a tapered neck 33, and a straight pipe-type connecting part 31 that can be connected to an outer pipe, which are connected in sequence. The positioning protrusion 32 is provided on the inner surface of the connecting part 31 and is used to position the insertion depth of the external conduit when the connecting part 31 is connected to the external conduit.
[0028] As a further optimization of the above technical solution, the edge of the filter screen 20 is fixed with an annular clamping part 21, and the clamping part 21 is fixed on the filter screen clamping groove 14.
[0029] As a further optimization of the above technical solution, the filter screen 20 is an arc-shaped screen 22 or a conical screen 23.
[0030] As a further optimization of the above technical solution, a conical spring 24 is provided on the inner wall of the conical mesh 23 to support the conical mesh 23.
[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that simple substitutions or modifications can still be made to the technical solutions or technical features described in the foregoing embodiments, and these simple substitutions or modifications do not cause the essence of the corresponding technical solutions to deviate from the spirit and substance of the technical solutions of the embodiments of this utility model, and are still within the protection scope of this utility model.
Claims
1. A filter for a refrigeration system comprising a tubular body and a filter screen, characterized in that: The pipe body is a stainless steel straight pipe. Copper pipe joints are welded to the inlet and outlet of the pipe body respectively. Two sets of axially spaced limiting protrusions are engraved or pressed on the inner surface of the inlet side of the pipe body. A filter screen clamping groove is formed between the two sets of limiting protrusions. A filter screen is fixed on the filter screen clamping groove. Positioning protrusions are engraved or pressed on the inner surface of the copper pipe joint.
2. A filter for a refrigeration system as set forth in claim 1 wherein: The positioning protrusions are three or more protrusions formed by circumferentially spaced engraving, pressing, or welding.
3. A filter for a refrigeration system as set forth in claim 1 wherein: Each group of protrusions consists of circumferentially spaced protrusions formed by engraving, pressing, or welding, forming a ring or annular protrusion.
4. A filter for a refrigeration system as set forth in claim 1 wherein: The copper pipe joint includes a straight pipe-shaped welding part, a tapered neck, and a straight pipe-shaped connecting part that are sequentially connected to the inlet or outlet of the pipe body. The positioning protrusion is provided on the inner surface of the connecting part.
5. A filter for a refrigeration system according to any one of claims 1-4, characterized in that: The filter screen has an annular clamping part fixed to its edge, and the clamping part is fixed to the filter screen clamping groove.
6. A filter for a refrigeration system according to claim 5, characterized in that: The filter screen is an arc-shaped screen or a cone-shaped screen.
7. A filter for a refrigeration system as set forth in claim 6 wherein: The inner wall of the conical mesh is provided with a conical spring for supporting the conical mesh.