New structure low noise drawing pipe

Abstract

The utility model discloses a new structure low -noisy drawing pipe, including refrigerant pipeline and drawing pipe body, refrigerant pipeline and drawing pipe body integral connection, and drawing pipe body's diameter is less than the diameter of refrigerant pipeline, be provided with expansion section pipeline on drawing pipe body, and expansion section pipeline and drawing pipe body are integral connection, the diameter of expansion section pipeline is greater than the diameter of drawing pipe body, and the diameter of expansion section pipeline is not greater than the diameter of refrigerant pipeline, the number of expansion section pipeline is not less than two, two expansion section pipeline series connection on drawing pipe body, through the increase inner tooth or internal thread in drawing pipe inside and part refrigerant adsorption on the surface, increased noise diffuse reflection, cause the noise reduction, through two expansion section pipeline will form the turbulent flow of refrigerant, cause the noise diffuse reflection, thereby reach the purpose of noise reduction, in this respect carry out the noise reduction, make the refrigerator noise reduction effect better.

Description

Technical Field

[0001] This utility model relates to the field of refrigerator noise reduction technology, specifically a new structure of low-noise pull-out tube. Background Technology

[0002] A drawn tube is typically added at the connection between the capillary tube and the evaporator to throttle flow, reduce pressure, and decrease noise. Conventional designs involve drawing copper or aluminum tubes to reduce their inner diameter, creating a buffer and mitigating refrigerant ejection noise. Existing devices often employ turbulence reduction to lower noise levels. For example, patent publication number CN115885140A describes this by machining two narrow sections in the refrigerant line. However, our company's experiments have shown that this structure's noise reduction function is ineffective and therefore fails to meet current needs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a new structure of low-noise pull tube. It adsorbs part of the refrigerant on the surface, which increases the diffuse reflection of noise and leads to noise reduction. It will form turbulence of refrigerant, which will lead to diffuse reflection of noise, thereby achieving the purpose of noise reduction. This method reduces noise from one aspect, making the refrigerator noise reduction effect better and effectively solving the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel low-noise drawing tube, comprising a refrigerant pipeline and a drawing tube body, wherein the refrigerant pipeline is integrally connected to the drawing tube body, and the diameter of the drawing tube body is smaller than the diameter of the refrigerant pipeline, and an expansion section pipe is provided on the drawing tube body, wherein the expansion section pipe is integrally connected to the drawing tube body.

[0005] Furthermore, the diameter of the expansion section pipe is larger than the diameter of the drawn tube body, and the diameter of the expansion section pipe is not larger than the diameter of the refrigerant pipe. The number of expansion section pipes is not less than two, and the two expansion section pipes are connected in series on the drawn tube body.

[0006] Furthermore, both ends of the expansion section pipe are tapered structures, and the end where the refrigerant pipe connects to the pull-out tube body is also tapered.

[0007] Furthermore, the inner side of the pull-out tube and the expansion section pipe is provided with a turbulence structure to reduce noise.

[0008] Furthermore, the turbulence structure is provided with internal teeth uniformly arranged inside the drawing tube and the expansion section pipe, or with internal threads uniformly arranged inside the drawing tube and the expansion section pipe.

[0009] Compared with the prior art, the beneficial effects of this utility model are: This new low-noise drawing tube has a simple structure and simple production steps. By adding internal teeth or internal threads inside the drawing tube, some refrigerant is adsorbed on the surface, which increases the diffuse reflection of noise and leads to noise reduction. The two expansion sections of the pipe will form turbulence of refrigerant, which will lead to diffuse reflection of noise and thus achieve the purpose of noise reduction. This reduces noise from one aspect and makes the refrigerator noise reduction effect better. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal tooth structure of the drawing tube body of this utility model; Figure 3 This is a schematic diagram of the internal thread structure of the pull-out tube body of this utility model; Figure 4 This is a schematic diagram of the structure before the improvement of this utility model.

[0011] In the diagram: 1. Refrigerant piping, 2. Pull-out pipe body, 3. Expansion section piping. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Please see Figure 1-4 This utility model provides a technical solution: a new low-noise drawing tube, including a refrigerant pipeline 1 and a drawing tube body 2, wherein the refrigerant pipeline 1 and the drawing tube body 2 are integrally connected, and the diameter of the drawing tube body 2 is smaller than the diameter of the refrigerant pipeline 1. An expansion section pipe 3 is provided on the drawing tube body 2, and the expansion section pipe 3 is integrally connected to the drawing tube body 2.

[0014] Furthermore, the diameter of the expansion section pipe 3 is greater than the diameter of the pull-out tube body 2, and the diameter of the expansion section pipe 3 is not greater than the diameter of the refrigerant pipe 1. The number of expansion section pipes 3 is not less than two, and the two expansion section pipes 3 are connected in series on the pull-out tube body 2.

[0015] Furthermore, both ends of the expansion section pipe 3 are tapered structures, and the end connecting the refrigerant pipe 1 to the pull-out tube body 2 is also tapered.

[0016] Furthermore, the inner sides of the pull-out tube 2 and the expansion section pipe 3 are equipped with a turbulence-reducing structure to reduce noise.

[0017] Furthermore, the turbulence structure is provided with internal teeth uniformly arranged inside the drawing tube 2 and the expansion section pipe 3, or with internal threads uniformly arranged inside the drawing tube 2 and the expansion section pipe 3.

[0018] A method for producing a new type of low-noise drawn tube; Step 1: First, reserve the length of the refrigerant line 1 for processing the drawn tube body 2. Then, process internal teeth or internal threads on the inside of the drawn tube body 2 before drawing. Step 2: Then, the drawn tube body 2 is heated, and then the heated drawn tube body 2 is drawn three times to process two expansion section pipes 3 and three sections of drawn tube body 2. This completes the processing. This new structure low-noise drawn tube has a simple structure and simple production steps. By adding internal teeth or internal threads inside the drawn tube, some refrigerant is adsorbed on the surface, which increases the diffuse reflection of noise and leads to noise reduction. The two expansion section pipes 3 will form turbulent flow of refrigerant, which will lead to diffuse reflection of noise. The drawn tube uses internal toothed tubes or internal threaded tubes. After the diameter is reduced by drawing, the internal toothed or internal spiral structure is retained inside the drawn tube body 2. When the refrigerant passes through the drawing section, it is still in liquid and a small amount of gas. Because the inner wall of the drawn tube body 2 has added convex and concave grooves, the refrigerant will wet the depressions and retain some refrigerant, making the refrigerant flow more turbulent. The sound waves will be diffusely reflected, masking some of the sound and achieving the noise reduction effect.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A novel low-noise drawn tube, comprising a refrigerant line (1) and a drawn tube body (2), characterized in that: The refrigerant pipeline (1) is integrally connected to the pull tube body (2), and the diameter of the pull tube body (2) is smaller than the diameter of the refrigerant pipeline (1). An expansion section pipe (3) is provided on the pull tube body (2), and the expansion section pipe (3) is integrally connected to the pull tube body (2).

2. The novel low-noise drawing tube according to claim 1, characterized in that: The diameter of the expansion section pipe (3) is greater than the diameter of the pull tube body (2), and the diameter of the expansion section pipe (3) is not greater than the diameter of the refrigerant pipe (1). There are at least two expansion section pipes (3), and the two expansion section pipes (3) are connected in series on the pull tube body (2).

3. The novel low-noise drawing tube according to claim 1, characterized in that: The expansion section pipe (3) has tapered structures at both ends, and the refrigerant pipe (1) is also tapered at one end connected to the pull-out tube body (2).

4. The novel low-noise drawing tube according to claim 1, characterized in that: The inner sides of the pull-out tube (2) and the expansion section pipe (3) are provided with a turbulence structure to reduce noise.

5. The novel low-noise drawing tube according to claim 4, characterized in that: The turbulence structure is formed by uniformly setting internal teeth inside the pull-out tube (2) and the expansion section pipe (3) or uniformly setting internal threads inside the pull-out tube (2) and the expansion section pipe (3).

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