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. 11, 2017
Filed:
Feb. 09, 2012
Koji Naito, Tokyo, JP;
Yasutaka Yoshida, Tokyo, JP;
Kazumoto Urata, Tokyo, JP;
Hiroyuki Kawaguchi, Tokyo, JP;
Yuki Furuta, Tokyo, JP;
Kazuhiko Tani, Tokyo, JP;
Koji Naito, Tokyo, JP;
Yasutaka Yoshida, Tokyo, JP;
Kazumoto Urata, Tokyo, JP;
Hiroyuki Kawaguchi, Tokyo, JP;
Yuki Furuta, Tokyo, JP;
Kazuhiko Tani, Tokyo, JP;
Johnson Controls-Hitachi Air Conditioning Technology (Hong Kong) Limited, Kowloon Bay KLN, HK;
Abstract
Provided is an air conditioner which comprises multiple outdoor units, the air conditioner being configured so that, with the use of a low cost configuration, required refrigeration machine oil is supplied to all the outdoor units through refrigerant piping and so that the air conditioner has increased reliability. An air conditioner is provided with multiple indoor units and with four outdoor units which are connected to the multiple indoor units through refrigerant piping. A line of first refrigerant piping leading from the multiple indoor units is branched into two lines of second refrigerant piping, each of the two lines of second refrigerant piping is branched into two lines of third refrigerant piping, and the four lines of third refrigerant piping are respectively connected to the four outdoor units.