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:
Apr. 24, 2001
Filed:
Nov. 18, 1998
Masashi Izumi, Gunma-ken, JP;
Nobuhiro Idei, Gunma-ken, JP;
Akira Hatakeyama, Gunma-ken, JP;
Toshio Kubo, Gunma-ken, JP;
Mamoru Kubo, Gunma-ken, JP;
Sanyo Electric Co., Ltd., Osaka-Fu, JP;
Abstract
An air conditioning system comprises a heat source side machine, a plurality of user side machines more than half of which are disposed below the heat source side machine, and liquid phase and gas phase pipes connecting the heat source side machine with the user side machines to form a closed circuit. A phase-changeable fluid included in the closed circuit circulates by utilizing its own specific gravity difference between the liquid and gas phases, so that each of the user side machines can perform cooling and heating operations. The liquid phase pipe and the gas phase pipe can communicate with each other via a gas bypass circuit and/or a liquid bypass circuit including a open-close valve and liquid level detection means, so that bubbles or condensed liquid generated in the closed circuit can be exhausted quickly.