发明名称 |
Waste-Heat Recovery System in Oil-Cooled Gas Compressor |
摘要 |
The purpose of the present invention is: to enable hot water at a required temperature to be supplied, even in cases when compressor load factor is low; to suppress heat dissipation from a waste-heat recovery device; and to improve waste-heat recovery rate. A waste-heat recovery system in an oil-cooled gas compressor is provided with: a compressor main body (3); an oil separator (6); gas piping (8) which supplies, to a demanded destination, compressed gas separated from oil by the oil separator; oil piping (7) which returns, to the compressor main body, the oil separated by the oil separator; and a waste-heat-recovery heat exchanger (10) which recovers heat from the compressed gas and/or the oil. The waste-heat recovery system is also provided with: a hot-water storage tank (19); circulation circuits (17, 18) in which a heat medium is made to circulate between the waste-heat-recovery heat exchanger and the hot-water storage tank; a circulation pump (22) provided to these circulation circuits; and a control device (32) which, in cases when the temperature of the oil or the compressed gas subjected to heat exchange in the waste-heat-recovery heat exchanger is equal to or less than the temperature of the hot water in the hot-water storage tank, stops the circulation pump or reduces the rotational frequency of the circulation pump. |
申请公布号 |
US2015362212(A1) |
申请公布日期 |
2015.12.17 |
申请号 |
US201414763358 |
申请日期 |
2014.01.15 |
申请人 |
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. |
发明人 |
YAMAMOTO Kentaro;TAKANO Masahiko |
分类号 |
F24H1/20;F04C29/04;F24H9/20 |
主分类号 |
F24H1/20 |
代理机构 |
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代理人 |
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主权项 |
1. A waste-heat recovery system in an oil-cooled gas compressor including a compressor main body, an oil separator for separating oil, from compressed gas delivered from the compressor main body, a gas piping for sending the compressed gas separated from the oil by the oil separator to a demanded destination, an oil piping for returning the oil separated by the oil separator to the compressor main body, and a waste-heat-recovery heat exchanger for recovering heat from at least either of the compressed gas flowing through the gas piping or the oil flowing through the oil piping, the waste-heat recovery system in the oil-cooled gas compressor comprising:
a stored hot water tank for storing the heat from the waste-heat-recovery heat exchanger in a form of hot water; a circulation circuit for circulating a heat medium between the waste-heat-recovery heat exchanger and the stored hot water tank for moving the heat received from the waste-heat-recovery heat exchanger to the stored hot water tank; a circulation pump provided at the circulation circuit; and a control device for controlling to stop the circulation pump or reduce the rotational frequency thereof in a case where a temperature of the oil or the compressed gas subjected to heat exchange by the waste-heat-recovery heat exchanger is equal to or lower than a temperature of the hot water in the stored hot water tank. |
地址 |
Chiyoda-ku, Tokyo JP |