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Enhanced vapor injection bypass structure of scroll compressor

A technology of scroll compressors and gas injection to increase enthalpy, applied in the field of scroll compressors, can solve problems such as difficult system matching, large fluctuations in exhaust temperature, and poor heating capacity at low temperatures, so as to reduce fluctuations in exhaust temperature and improve The effect of heating capacity and good cooling capacity

Pending Publication Date: 2021-12-10
江森自控日立万宝压缩机(广州)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a bypass structure of air injection enthalpy for scroll compressors, aiming to solve the problem of poor low-temperature heating capacity, large fluctuations in exhaust temperature and difficulty in system matching of traditional air injection enthalpy structures at the premise of the lowest cost and other technical issues

Method used

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  • Enhanced vapor injection bypass structure of scroll compressor
  • Enhanced vapor injection bypass structure of scroll compressor
  • Enhanced vapor injection bypass structure of scroll compressor

Examples

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Embodiment

[0027] refer to Figure 1 to Figure 6 , an air injection enthalpy-increasing bypass structure of a scroll compressor, the scroll compressor includes a casing 1 and a fixed scroll 2 , a moving scroll 3 and a frame 4 installed in the casing 1 .

[0028] specific reference Figure 6 , the fixed scroll 2 has an end plate 20 and a spiral tooth 200 arranged on the end plate 20, the spiral tooth 200 spirally coils to form a scroll chamber 22, and the edge of the end plate 20 has a The tail end of 22 communicates with the air inlet 230, and the middle part has an exhaust port 21 communicated with the center of the vortex chamber 22. The end plate 20 is provided with a mounting counterbore 26 and an air injection enthalpy increasing hole 28 connected in sequence from the back to the inside. The air injection enthalpy-increasing hole 28 communicates with the middle section of the scroll chamber 22 , and the inner diameter of the installation counterbore 26 of the fixed scroll 2 close t...

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Abstract

The invention provides an enhanced vapor injection bypass structure of a scroll compressor. According to the enhanced vapor injection bypass structure of the scroll compressor, an end plate of a fixed scroll plate is provided with a mounting counter bore and an enhanced vapor injection hole, an enhanced vapor injection pipe is arranged on the fixed scroll plate through an injection flange, and the injection flange is provided with a bottom boss sinking into the mounting counter bore of the fixed scroll plate and is provided with an outer end counter bore and an inner end through hole; the enhanced vapor injection pipe is connected into the outer end counter bore of the injection flange, so that the enhanced vapor injection pipe communicates with the enhanced vapor injection hole through the inner end through hole of the injection flange and the mounting counter bore; particularly, the back face of the end plate is provided with a vertical counter bore beside the mounting counter bore, the inner side of the end plate is provided with an air suction side enhanced vapor injection hole beside an air inlet, and the end plate is further provided with a transverse through hole communicating the vertical counter bore with the air suction side enhanced vapor injection hole; and the injection flange is provided with a flange through hole for communicating the vertical counter bore with the inner end through hole to form an enhanced vapor injection bypass channel. According to the enhanced vapor injection bypass structure of the scroll compressor, the jet flow can be increased, the heating capacity is improved, meanwhile, the exhaust temperature fluctuation is reduced, and the operation working condition is optimized.

Description

technical field [0001] The invention relates to a scroll compressor, in particular to a bypass structure for increasing enthalpy by gas injection of the scroll compressor. Background technique [0002] Due to many factors such as the implementation of coal-to-electricity policy in northern China and the increasing demand in the drying market, the requirements for heating capacity at low temperatures are getting higher and higher. Traditional scroll compressors, due to low temperature heating conditions, the ambient temperature decreases, the density of the refrigerant sucked by the compressor decreases, and the refrigerant flowing through the evaporator and condenser decreases, resulting in serious attenuation of heating capacity; with the function of increasing enthalpy by air injection The scroll compressor, which re-injects part of the evaporated refrigerant into the medium-low pressure scroll compression cavity, performs secondary compression, increases the suction flow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/02F04C29/00F04C29/04F04C29/12
CPCF04C18/0215F04C29/12F04C29/04F04C29/124F04C29/00
Inventor 卢庆元杨家祥
Owner 江森自控日立万宝压缩机(广州)有限公司
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