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Compressor having muffler function

A technology for compressors and compression chambers, applied in the field of compressors, can solve problems such as excessive stress in injection pipes, and achieve the effect of suppressing vibration

Active Publication Date: 2019-03-15
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, noise is sometimes generated or excessive stress is applied to the injection pipe

Method used

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  • Compressor having muffler function
  • Compressor having muffler function
  • Compressor having muffler function

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0055] (1) Overall structure

[0056] figure 1 It is the refrigerant circuit 100 of the air conditioner which used the compressor 10 which concerns on one Embodiment of this invention. The refrigerant circuit 100 has an outdoor unit 60 , an indoor unit 80 , and refrigerant piping 70 .

[0057] (1-1) Outdoor unit 60

[0058] The outdoor unit 60 functions as a heat source. The outdoor unit 60 has a compressor 10 , a four-way switching valve 61 , an outdoor heat exchanger 62 , an outdoor expansion valve 63 , an energy-saving heat exchanger 64 , an injection expansion valve 65 , a liquid shutoff valve 67 and a gas shutoff valve 68 .

[0059] The compressor 10 compresses refrigerant which is a fluid. The compressor 10 compresses the gaseous low-pressure refrigerant sucked in from the suction pipe 21 and discharges the gaseous high-pressure refrigerant from the discharge pipe 22 . The four-way switching valve 61 is connected as shown by a solid line during cooling operation, an...

no. 2 approach

[0127] (1) Structure

[0128] Figure 9 It is the compressor 10 of 2nd Embodiment of this invention. The compressor 10 of the present embodiment is different from the first embodiment in that it includes not only the first throttle portion S1 and the second throttle portion S2 but also the third throttle portion S3. The third throttle portion S3 is connected to the second throttle portion S2. The third throttle portion S3 receives the refrigerant from the second throttle portion S2 and guides the refrigerant to the compression chamber 33 . The third throttle portion S3 is constituted by a flow path 56 . The flow path 56 may also be integrally formed of the same member as the second throttle portion S2. Alternatively, the flow path 56 may be formed of a member different from the second throttle portion S2.

[0129] The first throttle portion S1 , the expanding pipe portion E, and the second throttle portion S2 are composed of separate components. Furthermore, the enlarged...

no. 3 approach

[0144] (1) Structure

[0145] Figure 11 It is the compressor of 3rd embodiment. This embodiment is different from the first embodiment in that the compressive element connecting portion 53 is embedded in the first support member 44 . The injection injection hole 54 communicates with the compression chamber 33 via the refrigerant path 44 a formed in the first support member 44 and the refrigerant path 31 a formed in the fixed scroll 31 in sequence.

[0146] (2) Features

[0147] According to this configuration, the refrigerant passes through the first support member 44 . Therefore, the refrigerant is stably supplied to the compression chamber 33 defined by the fixed scroll 31 via the first support member 44 .

[0148] (3) Variations

[0149] Modifications of the previous embodiments can also be applied to this embodiment alone or in combination.

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PUM

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Abstract

A compressor (10) compresses a drawn-in low-pressure refrigerant and discharges high-pressure refrigerant. The compressor (10) is provided with a first throttle part (S1), a widened flow channel part(E), a second throttle part (S2), and a compression element (30). The first throttle part (S1) receives intermediate-pressure refrigerant from an injection tube (69) of a refrigerant circuit (100). The widened flow channel part (E) receives refrigerant from the first throttle part. The second throttle part (S2) receives refrigerant from the widened flow channel part. The compression element (30) has a compression chamber (33) that receives refrigerant from the second throttle part. The flow channel cross-sectional area (AS1) of the first throttle part is less than both the flow channel cross-sectional area (A1) of the injection tube and the flow channel cross-sectional area (AE) of the widened flow channel part. The flow channel cross-sectional area (AS2) of the second throttle part is less than the flow channel cross-sectional area (AE) of the widened flow channel part.

Description

technical field [0001] The present invention relates to compressors. Background technique [0002] A compressor is used in a refrigerant circuit of an air conditioner or the like. The compressor sucks low-pressure gas refrigerant into its own compression chamber, compresses it into high-pressure gas refrigerant, and discharges it. Some compressors perform gas injection in order to improve the performance of the refrigerant circuit. In gas injection, a pipe called an injection pipe is connected to the compression chamber of the compressor. In a part of the refrigerant circuit, there is an intermediate-pressure gas refrigerant showing a pressure value between the low-pressure gas refrigerant and the high-pressure gas refrigerant. The injection pipe introduces the intermediate-pressure gas refrigerant into the compression chamber. [0003] The injection pipe vibrates frequently due to the pressure pulsation of the gas refrigerant. Therefore, noise may be generated or exces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/06F04B39/00F04B39/12F04C29/04F04C29/12F04C29/06
CPCF04B39/00F04B39/06F04B39/12F04C29/04F04C29/06F04C29/12F04B39/0055F04B39/0061F04B39/123F04C18/0215F04C29/065F04C2210/22F04C2270/135
Inventor 远藤健塚义友
Owner DAIKIN IND LTD