Patent ID: 11906188
Assignee: JOHNSON CONTROLS TYCO IP HOLDINGS LLP
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An energy efficient heat pump for a heating, ventilation, and air conditioning (HVAC) system, comprising:
a compressor system configured to direct a working fluid flow along a working fluid circuit of the energy efficient heat pump, wherein the compressor system comprises:
a first compressor configured to direct the working fluid flow in a first direction along the working fluid circuit; and
a second compressor configured to direct the working fluid flow in a second direction along the working fluid circuit, opposite the first direction; and

a controller communicatively coupled to the first compressor and the second compressor, wherein the controller is configured to:
operate the first compressor and suspend operation of the second compressor in a cooling mode of the energy efficient heat pump;
operate the second compressor and suspend operation of the first compressor in a heating mode of the energy efficient heat pump; and
operate the first compressor and suspend operation of the second compressor in a defrost mode of the energy efficient heat pump to adjust flow of the working fluid flow from the second direction along the working fluid circuit to the first direction along the working fluid circuit.