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Sound-proof transition pipe

A technology of transition pipe and pipe diameter, which is applied in the direction of fluid circulation arrangements, refrigeration components, refrigerators, etc., can solve the problems of fluorine flow noise and other noises, and does not eliminate the noise reduction function of refrigerant fluorine flow noise, etc. The effect of low frequency noise

Inactive Publication Date: 2011-04-06
TCL AIR CONDITIONER ZHONGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, although the transition tube in the prior art can meet the connection between the capillary tube and the copper tube, it also has shortcomings. On the one hand, it does not eliminate the fluorine flow noise and other noise reduction functions when the refrigerant flows at high speed. On the other hand, , he may instead produce fluorine flow noise and other noises

Method used

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Experimental program
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Effect test

Embodiment 1

[0018] The muffler transition pipe 2 of the present invention adopts multi-stage depressurization. During the flow process of the refrigerant, the pressure gradually decreases step by step, avoiding a rapid pressure drop, no sharp turbulent flow phenomenon, and no rapid cavitation that causes the bubbles to explode violently. Breaking, so that there will be no whistling and other noises of fluorine flow, improve sound quality and reduce noise by 2-3dBA. According to the pipe diameter of the capillary tube and the heat exchanger copper tube in the present invention, more than two pressure drop levels can be set between the two. This embodiment adopts a three-level pressure drop method, and the following uses three levels The muffler transition pipe for pressure drop will be described in detail. In this paper, unless otherwise specified, the pipe diameter unit is mm.

[0019] Such as figure 2 As shown, when the diameter of the capillary tube is φ3 and the diameter of the coppe...

Embodiment 2

[0021] According to the diameter of the capillary tube and the heat exchanger copper tube, two pressure drop levels are set between the muffler transition tube in this embodiment. When the diameter of the copper pipe is φ7, the transition pipe 2 is provided with a secondary pressure drop, which is realized by three sections of pipe sections with different pipe diameters, among which the pipe diameter of the connecting pipe 201 with the capillary is φ5.5, and the primary pressure drop pipe section 202 is The pipe diameter is φ6, and the secondary step-down pipe section 203 is φ7.

Embodiment 3

[0023] This embodiment adopts a four-stage pressure drop method: when the diameter of the shunt capillary used is φ2.7 and the diameter of the copper tube of the heat exchanger is φ9.52, the transition pipe 2 is provided with four-stage pressure drop, which is divided into five sections. The pipe section of the pipe diameter is realized, wherein the pipe diameter of the connecting pipe 201 with the capillary is φ3.5, the pipe diameter of the first-stage depressurization pipe section 202 is φ4.5, the second-stage depressurization pipe section 203 is φ6, and the third-stage depressurization pipe section 204 is φ7.5, φ9.52 for the four-stage step-down pipe section.

[0024] Certainly, there are other combinations, which also belong to the scope of the present invention. Usually, the inner diameter of the connecting pipe 201 of the capillary is 0.5-1mm larger than the diameter of the capillary. In order to ensure that one end of the capillary is inserted into the pipe section of t...

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Abstract

The invention discloses an air conditioner with a sound-proof transition pipe. The sound-proof transition pipe is arranged between a heat exchanger and a capillary tube of a refrigerating system. More than two pressure-dropping tube sections with successively-increased tube diameters are arranged on the sound-proof transition pipe (2). Due to the adoption of the gradual pressure reduction, the refrigerant flow pressure is gradually reduced so as to avoid pressure jump and reduce fluorine flow noise and other noise. In addition, due to the adoption of reasonable expansion ratio, other middle-frequency and low-frequency noise produced by the refrigerant flow is eliminated.

Description

technical field [0001] The invention relates to the technical field of room air conditioners, in particular to a sound-absorbing transition tube used in household appliances such as air conditioners and refrigerators. Background technique [0002] In the existing heat exchangers, the diameters of the copper tubes used are generally φ9.52 and φ7. When the heat exchanger adopts capillary throttling, the diameter specifications of the capillary tubes are generally φ2.7, φ3, For φ3.2 and φ5, the capillary has a small diameter and cannot be directly welded to the copper tube of the heat exchanger. Therefore, a copper tube is needed to transition between the capillary tube and the copper tube of the heat exchanger to realize The connection between the capillary tube and the copper tube of the heat exchanger. [0003] Existing transition pipe 1 such as figure 1 As shown, the A end is connected to the air conditioner heat exchanger, and the B end is connected to the capillary afte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/00
Inventor 招伟王延菊
Owner TCL AIR CONDITIONER ZHONGSHAN CO LTD
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