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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.:

US 12698914 B1

PDFFull Text
Date of Patent:
Aug. 04, 2026

Filed:

Nov. 20, 2023

Refrigeration cycle device and refrigerant leakage determination system

Applicant:

Daikin Industries, Ltd., Osaka, JP;

Inventors:

Shu Miura, Osaka, JP;

Keisuke Nishitani, Osaka, JP;

Assignee:

DAIKIN INDUSTRIES, LTD., Osaka, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Jonathan Bradford

Int. Cl.
CPC ...
F24F 11/36 (2018.01); F24F 11/58 (2018.01); F24F 110/12 (2018.01); F24F 120/10 (2018.01); F24F 140/12 (2018.01); F24F 140/20 (2018.01);
U.S. Cl.
CPC ...
F24F 11/36 (2018.01); F24F 11/58 (2018.01); F24F 2110/12 (2018.01); F24F 2120/10 (2018.01); F24F 2140/12 (2018.01); F24F 2140/20 (2018.01); F24F 2221/22 (2013.01); F25B 2500/222 (2013.01);
Abstract

An air conditioner has a heat source unit and a utilization unit, and includes a refrigerant circuit, a first detector, and a controller. The refrigerant circuit is configured by a compressor, a condenser, an expansion mechanism, and an evaporator being connected by a refrigerant pipe. The first detector detects the temperature or pressure of refrigerant in the refrigerant circuit. The controller starts the compressor during the non-operation of the compressor and executes a determination mode to determine the presence or absence of refrigerant leakage from the refrigerant circuit on the basis of a detection value of the first detector.

Find Patent Forward Citations

Miura, Shu. (2026). Refrigeration cycle device and refrigerant leakage determination system (U.S. Patent No. 12698914). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12698914

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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