Heat pump system

摘要

A heat pump system includes a heat pump circuit, a load distribution element, and a controller. The heat pump circuit includes low-stage and high-stage compression mechanisms having a fixed capacity ratio relationship. The load distribution element establishes a load distribution between first and second heat loads subjected to heating processes by heat exchange with refrigerant discharged from the low-stage and high-stage compression mechanisms, respectively. The controller performs distribution control to maintain a ratio of 1 between temperatures of the refrigerant discharged from the low-stage and high stage compression mechanisms and after heat exchange with the first and second heat loads, respectively. Alternatively, the controller performs distribution control to reduce a difference between the temperatures of the refrigerant discharged from the low-stage and high stage compression mechanisms and after heat exchange with the first and second heat loads, respectively.

主权项

1. A heat pump system comprising:
a heat pump circuit including a compression mechanism with a low-stage compression mechanism and a high-stage compression mechanism having a fixed capacity ratio relationship, an expansion mechanism, and an evaporator, with a refrigerant being circulated through the heat pump circuit; a load distribution element configured and arranged to establish a load distribution between
a first heat load subjected to a heating process by heat exchange with a refrigerant discharged from the low-stage compression mechanism, anda second heat load subjected to a heating process by heat exchange with a refrigerant discharged from the high-stage compression mechanism; and a controller configured to perform a distribution control of the load distribution element
so as to maintain a ratio of 1 between
a temperature of the refrigerant discharged from the low-stage compression mechanism and after heat exchange with the first heat load, anda temperature of the refrigerant discharged from the high-stage compression mechanism and after heat exchange with the second heat load; orso as to reduce a difference between
the temperature of the refrigerant discharged from the low-stage compression mechanism and after heat exchange with the first heat load, andthe temperature of the refrigerant discharged from the high-stage compression mechanism and after heat exchange with the second heat load.