Air conditioner for vehicle with heat pump cycle
AssigneeDenso Corporation
InventorsMitsuyo Oomura, Hiroyuki Hayashi, Yukihiko Takeda, Yoshinori Ichishi
Life of this patent
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Abstract
An air conditioner for a vehicle includes a vapor compression refrigeration cycle switchable between a heat pump cycle and a cooler cycle, a heat core configured to heat air to be blown into a vehicle compartment by using coolant of an engine of the vehicle as a heat source, and a controller configured to control operation of the vapor compression refrigeration cycle. The controller controls the vapor compression refrigeration cycle to be operated as the cooler cycle so as to perform a defrosting control of the outdoor heat exchanger, and outputs an operation request signal to the engine, when the controller determines that the outdoor heat exchanger is frosted.
Claims5
An air conditioner for a vehicle, comprising:
- a vapor compression refrigeration cycle including an outdoor heat exchanger configured to perform heat exchange between refrigerant and air outside of a vehicle compartment, and an indoor heat exchanger configured to perform heat exchange between the refrigerant and air to be blown into the vehicle compartment, the vapor compression refrigerant cycle being configured to be switchable between a heat pump cycle in which a heat amount absorbed from the outdoor heat exchanger is radiated to the indoor heat exchanger to heat air to be blown into the vehicle compartment, and a cooler cycle in which a heat amount absorbed from the indoor heat exchanger is radiated to the outdoor heat exchanger;
- and
- a controller configured to control the vapor compression refrigeration cycle, wherein
- the controller causes the vapor compression refrigeration cycle to be operated as the cooler cycle so as to perform a defrosting control of the outdoor heat exchanger when the controller determines that the outdoor heat exchanger is frosted,
- the controller is configured to perform a pre-air conditioning control that starts air conditioning in the vehicle compartment when a passenger turns on a predetermined switch before riding in the vehicle, and
- in a case where the controller determines that the outdoor heat exchanger is frosted, the controller prohibits the defrosting control when performing the pre-air conditioning control, and performs the defrosting control when the pre-air conditioning control is not performed.
Dependencies are inferred from the claim text.