Novel-structure low-noise drawing pipe

Abstract

The invention discloses a novel-structure low-noise drawing pipe which comprises a refrigerant pipeline and a drawing pipe body, the refrigerant pipeline and the drawing pipe body are integrally connected, the diameter of the drawing pipe body is smaller than that of the refrigerant pipeline, an expansion section pipeline is arranged on the drawing pipe body, the expansion section pipeline and the drawing pipe body are integrally connected, and the expansion section pipeline is connected with the refrigerant pipeline. The diameter of the expansion section pipelines is larger than that of the drawing pipe body, the diameter of the expansion section pipelines is not larger than that of the refrigerant pipeline, the number of the expansion section pipelines is not smaller than two, the two expansion section pipelines are connected to the drawing pipe body in series, and part of refrigerant is adsorbed to the surface by additionally arranging inner teeth or inner threads in the drawing pipe. And the turbulent flow of the refrigerant can be formed through the two expansion section pipelines, so that the diffuse reflection of the noise is caused, and the purpose of reducing the noise is achieved, so that the noise is reduced from the aspect, and the noise reduction effect of the refrigerator is better.

Description

Technical Field

[0001] This invention relates to the field of refrigerator noise reduction technology, specifically a novel low-noise pull 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. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a new structure of low-noise pull tube. By adsorbing part of the refrigerant on the surface, the diffuse reflection of noise is increased, resulting in noise reduction. Turbulence of refrigerant is formed, which leads 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, the present invention 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] A method for producing a new type of low-noise drawn tube; Step 1: First, reserve the length of the refrigerant pipeline inlet for processing the drawn tube body, and then process internal teeth or internal threads on the inside of the drawn tube body before drawing. The second step is to heat the drawn tube body and then draw it three times to produce two expansion sections and three drawn tube bodies, thus completing the processing.

[0010] Compared with the prior art, the beneficial effects of the present invention are: the new 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 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

[0011] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal tooth structure of the drawing tube body of the present invention; Figure 3 This is a schematic diagram of the internal thread structure of the drawing tube body of the present invention; Figure 4 This is a schematic diagram of the original structure of the present invention.

[0012] In the diagram: 1. Refrigerant piping, 2. Pull-out pipe body, 3. Expansion section piping. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] Please see Figure 1-4 The present invention provides a technical solution: a new structure 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] Although embodiments of the 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 invention.

Claims

1. A new structure 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 with the drawn tube body (2), and the diameter of the drawn tube body (2) is smaller than that of the refrigerant pipeline (1), and the drawn tube body (2) is provided with the expansion section pipeline (3), and the expansion section pipeline (3) is integrally connected with the drawn tube body (2).

2. A low noise draw tube of novel construction according to claim 1, characterized in that: The diameter of the expansion section pipeline (3) is greater than that of the drawn tube body (2), and the diameter of the expansion section pipeline (3) is not greater than that of the refrigerant pipeline (1), and the number of the expansion section pipeline (3) is not less than two, and the two expansion section pipelines (3) are connected in series on the drawn tube body (2).

3. A low noise draw tube of novel construction as claimed in claim 1, wherein: The two ends of the expansion section pipeline (3) are conical structures, and the end connected with the refrigerant pipeline (1) of the drawn tube body (2) is also a conical structure.

4. A low noise draw tube of novel construction according to claim 1, characterized in that: The inner sides of the drawn tube body (2) and the expansion section pipeline (3) are provided with the turbulence structure to reduce noise.

5. A low noise draw tube of novel construction according to claim 4, characterized in that: The turbulence structure is uniformly provided with internal teeth in the drawn tube body (2) and the expansion section pipeline (3), or uniformly provided with internal threads in the drawn tube body (2) and the expansion section pipeline (3).

6. The production method of the low-noise drawn tube with the novel structure according to claim 5, characterized in that: First step: first, the inlet end of the refrigerant pipeline (1) is reserved for the length of the drawn tube body (2), and then the internal teeth are processed in the inner side of the drawn tube body (2) before drawing, or the internal threads are processed in the inner side of the drawn tube body (2); Second step: then, the drawn tube body (2) is heated, and then the drawn tube body (2) after heating is drawn three times to process two expansion section pipelines (3) and three drawn tube bodies (2), thereby completing the processing.

Images