US 12,403,749 B2
Air conditioner
Atsushi Yamada, Kariya (JP); Kazuhiro Tada, Kariya (JP); and Masaki Harada, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Aug. 8, 2023, as Appl. No. 18/366,866.
Application 18/366,866 is a continuation of application No. PCT/JP2022/001290, filed on Jan. 17, 2022.
Claims priority of application No. 2021-026880 (JP), filed on Feb. 23, 2021.
Prior Publication US 2023/0382195 A1, Nov. 30, 2023
Int. Cl. B60H 1/32 (2006.01); B60H 1/00 (2006.01)
CPC B60H 1/3205 (2013.01) [B60H 1/00571 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An air conditioner comprising:
a heat pump cycle including a compressor configured to compress and discharge a refrigerant, a heating part configured to heat air to be blown into a space to be air-conditioned using a high-pressure refrigerant discharged from the compressor as a heat source, and a low-temperature side water-refrigerant heat exchanger configured to cause a low-pressure refrigerant to absorb heat of a heat medium;
a heat medium circuit in which the heat medium is circulated, the heat medium circuit being provided with a heat medium passage of the low-temperature side water-refrigerant heat exchanger, and a heat generating part configured to heat the heat medium to flow into the heat medium passage of the low-temperature side water-refrigerant heat exchanger;
a blower configured to blow the air toward the space to be air-conditioned; and
a controller configured to set a heating preparation control in a case where a heating capability of the heating part is increased by using the heat generated by the heat generating part, wherein
in the heating preparation control, the controller is configured to set a refrigerant discharge capability of the compressor to be equal to or less than a predetermined reference discharge capability, and to set a blowing capability of the blower to be equal to or less than a predetermined reference blowing capability, until an inlet-side heat medium temperature of the heat medium flowing into the heat medium passage of the low-temperature side water-refrigerant heat exchanger becomes equal to or higher than a target heat medium temperature.