发明名称 |
Transport refrigeration system with secondary condenser and maximum operating pressure expansion valve |
摘要 |
A transport refrigeration system, and method of operating same, in which a maximum operating pressure expansion valve and a secondary condenser are used to enhance hot gas heating cycles initiated to hold a predetermined temperature set point, and hot gas defrost cycles. The secondary condenser is disposed in an evaporator section of the refrigeration system, with hot discharge gas from a compressor being directed to the secondary condenser during heating and defrost cycles. A sufficient supply of refrigerant for heating and defrost cycles is ensured by injecting refrigerant from a receiver and condenser into an active heat cycle refrigerant circuit, when the active refrigerant is insufficient to build the pressure on the low pressure side of the refrigeration system to a value sufficient to close the maximum operating pressure expansion valve and the compressor suction pressure is less than the receiver/condenser pressure.
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申请公布号 |
US4903495(A) |
申请公布日期 |
1990.02.27 |
申请号 |
US19890310566 |
申请日期 |
1989.02.15 |
申请人 |
THERMO KING CORP. |
发明人 |
HOWLAND, LELAND L.;TAYLOR, DAVID H.;SATTERNESS, CYNTHIA J. |
分类号 |
F25D11/00;B60H1/00;B60H1/32;F25B6/00;F25B47/02;F25D29/00 |
主分类号 |
F25D11/00 |
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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