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:
Jul. 22, 2025
Filed:
Mar. 04, 2020
Daikin Industries, Ltd., Osaka, JP;
Ryuuta Ohura, Osaka, JP;
Takuya Kotani, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
An air conditioning apparatus includes utilization-side units each including a first refrigerant circuit, a heat source-side unit including a second refrigerant circuit, a connection pipe group, and a relay unit. The relay unit is disposed between the first refrigerant circuit and the second refrigerant circuit, and blocks a flammable refrigerant flowing through the connection pipe group. The utilization-side units are disposed in a utilization-side unit group that is a group of two or more utilization-side units. The relay unit blocks a flow of the refrigerant between the first refrigerant circuit and the second refrigerant circuit. The connection pipe group connects the first refrigerant circuit and the refrigerant shut-off unit. The connection pipe group has one or both of a length and an internal volume, which is fixed based on information on capabilities of the two utilization-side units.