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 代理人
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