US 11,920,077 B2
Refrigeration cycle device for vehicle
Eiji Kumakura, Osaka (JP); Kazuhiro Furusho, Osaka (JP); Masaru Tanaka, Osaka (JP); Shun Ohkubo, Osaka (JP); Mitsushi Itano, Osaka (JP); Yuuki Yotsumoto, Osaka (JP); Akihito Mizuno, Osaka (JP); Tomoyuki Gotou, Osaka (JP); Yasufu Yamada, Osaka (JP); Tatsumi Tsuchiya, Osaka (JP); Kenji Gobou, Osaka (JP); Hitomi Kuroki, Osaka (JP); Daisuke Karube, Osaka (JP); Tatsuya Takakuwa, Osaka (JP); and Tetsushi Tsuda, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Appl. No. 17/260,775
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
PCT Filed Jul. 16, 2019, PCT No. PCT/JP2019/027988
§ 371(c)(1), (2) Date Jan. 15, 2021,
PCT Pub. No. WO2020/017520, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 2018-134448 (JP), filed on Jul. 17, 2018; application No. 2018-227398 (JP), filed on Dec. 4, 2018; application No. 2018-230259 (JP), filed on Dec. 7, 2018; application No. 2019-013974 (JP), filed on Jan. 30, 2019; application No. 2019-013979 (JP), filed on Jan. 30, 2019; application No. 2019-018617 (JP), filed on Feb. 5, 2019; application No. 2019-019701 (JP), filed on Feb. 6, 2019; application No. 2019-078133 (JP), filed on Apr. 16, 2019; application No. 2019-084708 (JP), filed on Apr. 25, 2019; application No. 2019-112408 (JP), filed on Jun. 17, 2019; application No. 2019-115584 (JP), filed on Jun. 21, 2019; and application No. PCT/JP2019/027031 (WO), filed on Jul. 8, 2019.
Prior Publication US 2021/0309902 A1, Oct. 7, 2021
Prior Publication US 2023/0029441 A2, Jan. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C09K 5/04 (2006.01); B60H 1/32 (2006.01); C10M 171/00 (2006.01); C10N 40/30 (2006.01)
CPC C09K 5/045 (2013.01) [B60H 1/3227 (2013.01); C10M 171/008 (2013.01); C09K 2205/106 (2013.01); C09K 2205/126 (2013.01); C09K 2205/128 (2013.01); C09K 2205/40 (2013.01); C10M 2207/0406 (2013.01); C10M 2207/2835 (2013.01); C10M 2209/1033 (2013.01); C10N 2040/30 (2013.01)] 12 Claims
 
1. A refrigeration method comprising operating a refrigeration cycle device for a vehicle,
wherein the operating comprises applying a refrigerant as an alternative refrigerant for R1234yf alone,
wherein a first equipment designed for operation using R1234yf alone is operated using the alternative refrigerant, optionally with changes of a few parts and adjustment of the first equipment, or
a second equipment designed for operation using the alternative refrigerant is operated for the same use as an existing use with R1234yf by using the alternative refrigerant,
wherein:
the refrigeration cycle device comprises a refrigerant circuit,
the refrigerant circuit comprises a compressor, a condenser, a decompressor, and an evaporator;
the refrigerant is sealed in the refrigerant circuit,
the refrigerant comprises at least trans-1,2-difluoroethylene (HFO-1132(E)) and 2,3,3,3-tetrafluoropropene (HFO-1234yf), and
the refrigerant comprises HFO-1132(E) and HFO-1234yf in such amounts that the sum of HFO-1132(E) and HFO-1234yf is 99.7 mass % or more.