IP Library › Granted Patent US 12,662,645
Granted Patent B2
US 12,662,645 · App. 17/849,421 · Granted Jun 23, 2026

Refrigeration cycle apparatus, refrigerating machine oil and refrigerant leakage prevention agent

Inventors: Taketo Katou (Osaka, JP); Akinari Sugiyama (Osaka, JP); Takamune Okui (Osaka, JP); Sadayasu Inagaki (Osaka, JP)
Assignee: DAIKIN INDUSTRIES, LTD.
C10M107/38C09K5/041C10M2213/0623C10N2040/30
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Quick Facts
Patent No.
US 12,662,645
App. No.
17/849,421
Filed
Jun 24, 2022
Granted
Jun 23, 2026
Kind
B2
Art Unit
1767
USPC
252/68
Abstract

A refrigeration cycle apparatus, refrigerating machine oil and refrigerant leakage prevention agent. The refrigeration cycle apparatus contains a working fluid which contains a refrigerant composition including a refrigerant and a refrigerating machine oil including resin particles of which D 50 and D 90 /D 10 are 2.0 μm to 10.0 μm and 4.0 to 14.0, respectively.

Claims (6)

1 . A refrigeration cycle apparatus comprising a working fluid for a refrigerator, the working fluid comprising:

a refrigerator oil comprising polytetrafluoroethylene particles having a D 50 of 2.0 μm to 10.0 μm, a D 90 /D 10 of 4.0 to 14.0, and a melt viscosity at 380° C. of 1×10 2 to 7×10 5 Pa·s; and

a refrigerant composition comprising a refrigerant,

wherein a particle size distribution of the polytetrafluoroethylene resin particles has a standard deviation of 3.0 μm to 8.0 μm.

2 . A refrigerant leakage prevention agent comprising a refrigerator oil which comprises polytetrafluoroethylene resin particles having a D 50 of 2.0 μm to 10.0 μm, a D 90 /D 10 of 4.0 to 14.0 μm, and a melt viscosity at 380° C. of 1×10 2 to 7×10 5 Pa·s,

wherein a particle size distribution of the polytetrafluoroethylene resin particles has a standard deviation of 3.0 μm to 8.0 μm.

Assignments (2)
CHANGE OF ADDRESS Recorded Jan 11, 2023
From: DAIKIN INDUSTRIES LTD.
To: DAIKIN INDUSTRIES LTD.
Reel/Frame 062355/0697 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 1, 2022
From: KATOU, TAKETO; SUGIYAMA, AKINARI; OKUI, TAKAMUNE; INAGAKI, SADAYASU
To: DAIKIN INDUSTRIES, LTD.
Reel/Frame 060424/0347 →
Priority Claims (1)
JP 2019-235055 · Dec 25, 2019 · national
Continuity (2)
Continuation PCTJP2020017971 · Apr 27, 2020
Related Publication 20220333032A1 · Oct 20, 2022
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