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:
Dec. 30, 2025
Filed:
Jul. 07, 2021
Mitsubishi Electric Corporation, Tokyo, JP;
Nobuhiro Wada, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An air-conditioning apparatus includes a refrigerant circuit including a compressor, a heat-source-side heat exchanger, an expansion device, a load-side heat exchanger, and a shut-off valve connected in sequence by pipes to allow refrigerant to flow therethrough; a heat-source-side air-sending device configured to send air to the heat-source-side heat exchanger; a leakage detecting unit configured to detect refrigerant leakage; and a controller configured to perform cooling operation. The controller is configured to, if the leakage detecting unit detects refrigerant leakage during cooling operation, close the shut-off valve after lowering an operation frequency of the compressor and increasing a rotation speed of the heat-source-side air-sending device.