A small u-bend assembly

Abstract

This utility model relates to the field of refrigeration technology, specifically to a small U-shaped bend assembly. Existing refrigeration small bends are simple U-shaped structures, requiring tooling for installation and positioning, which is time-consuming and labor-intensive, prone to weld blockage, and the large number of small bends increases maintenance and repair costs. The new small U-shaped bend assembly has multiple long tubes on a base plate, with small U-shaped tubes connected to the long tubes, and a copper sleeve between the long tubes and the small U-shaped tubes. The long tubes have a first flared end at the open end, and a first stop ring fitted on the sleeve; one end of the sleeve has a second flared end, and a second stop ring fitted on the small U-shaped tube; the front end of the small U-shaped tube is inserted into the long tube, extending beyond the base plate; a positioning mechanism is set on the long tube, with one end of the sleeve abutting against the inner side of the positioning mechanism, and the outer side of the positioning mechanism abutting against the base plate. This utility model has a reasonable structure, is convenient for installation and positioning, requires no tooling, effectively prevents micro-blockage and partial blockage caused by solder backflow, reduces maintenance and repair costs, and lowers overall costs.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, and more specifically to a small U-shaped bend assembly. Background Technology

[0002] In the refrigeration field, multiple refrigeration elbows are required. These elbows play a crucial role in refrigeration systems, performing several functions including changing fluid direction, reducing resistance, providing oil return, and blocking oil flow. They can alter the flow direction of refrigerant or lubricating oil to adapt to different installation spaces and system layouts. Beyond changing fluid flow direction, refrigeration elbows also play a vital role in oil return, oil blocking, and liquid sealing. Proper design and installation of refrigeration elbows are essential for ensuring the efficient operation and reliability of the refrigeration system.

[0003] In existing technologies, refrigeration small bends are simply U-shaped tube structures. Their installation and positioning require tooling and other related mechanisms, which is time-consuming and labor-intensive, and is prone to weld blockage. In addition, the large number of small bends increases the maintenance and repair costs, resulting in high costs. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a small U-shaped bend assembly with a reasonable structure and convenient installation and positioning.

[0005] A small U-shaped bend assembly includes a base plate on which multiple long tubes are mounted, each connected to a small U-shaped tube. A copper sleeve is fitted between the long tubes and the small U-shaped tubes. Each long tube has a first flare at its open end, and the sleeve has a first stop ring that fits into the first flare. One end of the sleeve has a second flare, and the small U-shaped tube has a second stop ring that fits into the second flare. The front end of the small U-shaped tube is inserted into the long tubes, extending beyond the base plate. A positioning mechanism is mounted on the long tubes, with one end of the sleeve abutting against the inner side of the positioning mechanism and the outer side of the positioning mechanism abutting against the base plate.

[0006] This practical design features a reasonable structure and convenient installation and positioning. Its installation and positioning do not require tooling or other related mechanisms, which can effectively prevent micro-blockage and partial blockage caused by solder backflow, greatly reducing maintenance and repair costs, and lowering overall costs.

[0007] As a further improvement and supplement to the above solution, this utility model also includes the following additional technical features: The small U-tube is made of stainless steel, further reducing costs.

[0008] The first stop ring is a first welded ring, and the second stop ring is a second welded ring. The structure is reasonable, the cost is low, and positioning is convenient.

[0009] The positioning mechanism is a tapered section. It is easy to process and install.

[0010] A copper-clad reinforcing plate is welded onto the small U-tube to increase rigidity and prevent deformation caused by external forces.

[0011] The base plate has protrusions, and its cross-section is an open frame structure. The structure is reasonable and has good rigidity.

[0012] The following advantages can be achieved by using this utility model: The structure is reasonable and the installation and positioning are convenient. Its installation and positioning do not require tooling or other related mechanisms, effectively preventing micro-blockage and partial blockage caused by solder backflow, greatly reducing maintenance and repair costs, and lowering overall costs. It increases rigidity, preventing deformation caused by external forces. The addition of a copper sleeve improves solderability and welding quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is the front view of this utility model.

[0015] Figure 3 This utility model Figure 2 The sectional view shown.

[0016] Figure 4 This utility model Figure 3 The enlarged view of point A shown.

[0017] Figure 5 This is a schematic diagram of the structure of the base plate 1 in this utility model. Detailed Implementation

[0018] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] like Figure 1-5 As shown, this utility model is a small U-shaped bend assembly.

[0020] The small U-shaped bend assembly described in this embodiment includes a base plate 1. Multiple long pipes 2 are mounted on the base plate 1, and small U-shaped pipes 3 are connected to the long pipes 2. A copper sleeve 6 is fitted between the long pipes 2 and the small U-shaped pipes 3. Each long pipe 2 has a first flare 21 at its open end, and a first stop ring 4 is provided on the sleeve 6, fitting snugly against the first flare 21. One end of the sleeve 6 has a second flare 61, and a second stop ring 7 is provided on the small U-shaped pipe 3, fitting snugly against the second flare 61. The front end of the small U-shaped pipe 3 is inserted into the long pipe 2, extending beyond the base plate 1. A positioning mechanism is set on the long pipe 2, with one end of the sleeve 6 abutting against the inner side of the positioning mechanism and the outer side of the positioning mechanism abutting against the base plate 1. The front end of the small U-shaped pipe 3 passes through the sleeve 6 and is located inside the long pipe 2. The two stop rings effectively provide positioning, eliminating the need for other tooling fixtures during installation, maintenance, and repair. The addition of the copper sleeve also improves weldability and welding quality.

[0021] Furthermore, the small U-tube 3 is made of stainless steel. The stainless steel small U-tube 3 has good rigidity and low cost.

[0022] Furthermore, the first stop ring 4 is a first welded ring, and the second stop ring 7 is a second welded ring. Using welded rings for positioning is cost-effective and ensures convenient and reliable welding.

[0023] Furthermore, the positioning mechanism is a tapered section 23, with the sleeve 6 abutting against the inner side of the tapered section 23 and the outer side of the tapered section 23 abutting against the protrusion 11 of the base plate 1. The sleeve 6 is provided inside the first cylindrical section 22 at the large end of the tapered section 23 on the long tube 2, and the protruding end of the small U-tube 3 is provided inside the second cylindrical section 24 at the small end of the tapered section 23 on the long tube 2. The outer side of the second cylindrical section 24 is attached to the protrusion 11. The positioning is reasonable and reliable.

[0024] Furthermore, a copper-plated reinforcing plate 5 is welded onto the small U-tube 3. The other end of the reinforcing plate 5 is welded onto another tube, and the reinforcing plate 5 is set at an angle, which provides good rigidity.

[0025] Furthermore, the base plate 1 is provided with protrusions 11, and all transitions are rounded. The cross-section of the base plate 1 is an open frame structure.

[0026] When using this small U-shaped bend assembly, fix the base plate 1 to the corresponding position, and after installation, weld the reinforcing plate 5 to the corresponding position.

[0027] The above are preferred embodiments of the present utility model and do not limit the scope of protection of the present utility model. Any modifications and improvements made by those skilled in the art based on the design concept of the present utility model should be considered within the scope of protection of the present utility model.

Claims

1. A small U-shaped bend assembly, comprising a base plate (1), characterized in that: Multiple long tubes (2) are provided on the base plate (1), and small U-tubes (3) are connected to the long tubes (2). A copper sleeve (6) is also sleeved between the long tubes (2) and the small U-tubes (3). The long tubes (2) have a first flared end (21) at the open end, and a first stop ring (4) is provided on the sleeve (6). The first stop ring (4) fits with the first flared end (21). A second flared end (61) is provided at one end of the sleeve (6), and a second stop ring (7) is provided on the small U-tubes (3). The second stop ring (7) fits with the second flared end (61). The front end of the small U-tubes (3) is inserted into the long tubes (2) with a depth exceeding the base plate (1). A positioning mechanism is set on the long tubes (2). One end of the sleeve (6) abuts against the inner side of the positioning mechanism, and the outer side of the positioning mechanism abuts against the base plate (1).

2. The small U-shaped bend assembly as described in claim 1, characterized in that: The material of the small U-tube (3) is stainless steel.

3. The small U-shaped bend assembly as described in claim 1, characterized in that: The first stop ring (4) is the first welding ring, and the second stop ring (7) is the second welding ring.

4. The small U-shaped bend assembly as described in claim 1, characterized in that: The positioning mechanism is a conical segment (23).

5. The small U-shaped bend assembly as described in claim 1, characterized in that: A copper-plated reinforcing plate (5) is welded onto the small U-tube (3).

6. The small U-shaped bend assembly as described in any one of claims 1-5, characterized in that: The base plate (1) is provided with a protrusion (11), and the cross section of the base plate (1) is an open frame structure.

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