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:
Oct. 10, 2023
Filed:
Apr. 02, 2019
Mitsubishi Electric Corporation, Tokyo, JP;
Koji Yamaguchi, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An air-conditioning apparatus includes a first indoor unit and an outdoor unit in a single refrigeration cycle and connected via a first refrigerant pipe. The first indoor unit is provided with a first refrigerant leakage sensor configured to detect leakage of refrigerant and a concentration of leaked refrigerant, and the outdoor unit includes a compressor, a first flow control valve configured to adjust a flow rate of the refrigerant flowing through the first refrigerant pipe, and a control unit configured to stop the compressor and fully close the first flow control valve when leakage of the refrigerant flowing through the first refrigerant pipe is detected by the first refrigerant leakage sensor, and configured to change an opening speed of the first flow control valve to a speed less than an opening speed of the first flow control valve adopted before the leakage of the refrigerant is detected.