发明名称 |
Multistage compressor for a CO2 cycle that includes a rotary compressing mechanism and a scroll compressing mechanism |
摘要 |
It is an object of the present invention to provide a multistage compressor employing a gas injection system for a CO2 cycle which is able to improve the compression efficiency and the compression performance thereof. In a multistage compressor (2) for a CO2 cycle (1) that carries out two-stage compression by discharging CO2 refrigerant gas compressed in a low-stage side rotary compressing mechanism (4) into a closed housing (3) and taking intermediate pressure refrigerant gas in the closed housing (3) by a high-stage side scroll compressing mechanism (5), a gas injection circuit (15) for injecting intermediate pressure CO2 refrigerant gas extracted from a refrigerant circuit into the closed housing (3) is connected to the closed housing (3), and the pressure ratios of the low-stage side rotary compressing mechanism (4) and the high-stage side scroll compressing mechanism (5) are substantially equivalent, and the ratios of displacement volume are substantially equivalent.
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申请公布号 |
US7914267(B2) |
申请公布日期 |
2011.03.29 |
申请号 |
US20070990010 |
申请日期 |
2007.12.27 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
SATO HAJIME;KIMATA YOSHIYUKI |
分类号 |
F01C1/30;F03C2/00 |
主分类号 |
F01C1/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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