The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 2021
Filed:
Sep. 01, 2017
Daikin Industries, Ltd., Osaka, JP;
Satoru Sakae, Osaka, JP;
Azuma Kondou, Osaka, JP;
Masaaki Takegami, Osaka, JP;
Kazuyoshi Nomura, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
Provided is a refrigeration apparatus capable of, even in occurrence of a refrigerant leak, suppressing the extent of the refrigerant leak in continuously operating a usage unit other than a usage unit at which the refrigerant leak occurs. When one of a first usage unit and a second usage unit connected in parallel via a liquid-refrigerant connection pipe and a gas-refrigerant connection pipe is in a refrigerant leak situation satisfying a predetermined condition, a controller closes an on-off valve of a leak unit, the on-off valve being disposed on the side of the liquid-refrigerant connection pipe with respect to a usage-side heat exchanger, continues to open an on-off valve of a non-leak unit, the on-off valve being disposed on the side of the liquid-refrigerant connection pipe with respect to a usage-side heat exchanger, and reduces a refrigerant pressure at a portion on the side of the liquid-refrigerant connection pipe with respect to each on-off valve below a refrigerant pressure at the portion at a time when the refrigerant leak situation satisfies the predetermined condition.