Heat pump system

Abstract

This invention provides a heat pump system, including a refrigerant circuit comprising a compressor, a first heat exchanger, and a second heat exchanger connected to each other via pipes. The compressor's discharge end is connected to the first heat exchanger, and the compressor's suction end is connected to the second heat exchanger. A blowing circuit includes a heater core connected to the first heat exchanger, through which heat from the first heat exchanger is transferred to the vehicle's interior. In a first operating mode, the blowing circuit and the refrigerant circuit share the first and second heat exchangers for heat exchange. This invention features a simple layout and high reliability. By utilizing the blowing circuit to participate in heat exchange with the refrigerant circuit in the second heat exchanger, the temperature and pressure of the refrigerant on the compressor's suction side are increased. This addresses the issue of the system being unable to obtain heat from the external environment at extremely low temperatures, transferring heat from the first heat exchanger to the second heat exchanger via coolant, ensuring the system's normal operation.

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