Heat pump with Hot Gas Bypass for Automotive Heat Pump Application

A heat pump system comprising:

• a refrigerant circuit having a primary loop including, in a direction of flow of a refrigerant through the primary loop, a compressor, a condenser, an expansion element, and a chiller, wherein a bypass flow path extends from a branch point disposed along the primary loop downstream of the compressor and upstream of the condenser to one of:
• a pre-chiller reentry point disposed along the primary loop downstream of the expansion element and upstream of the chiller, or
• a post-chiller reentry point disposed along the primary loop downstream of the chiller and upstream of a suction inlet of the compressor;
• and
• a bypass valve disposed along the bypass flow path, the bypass valve configured to meter a flow of gaseous refrigerant flowing along the bypass flow path to the corresponding one of the pre-chiller reentry point or the post-chiller reentry point with the flow of the gaseous refrigerant configured to increase a pressure and temperature of the refrigerant along the primary loop at the corresponding one of the pre-chiller reentry point or the post-chiller reentry point.