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. 10, 2012
Filed:
Jul. 31, 2008
Tatsunori Sakai, Tokyo, JP;
Masato Yosomiya, Tokyo, JP;
Hirokuni Shiba, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
The present invention is directed to a refrigerant filling apparatus of the refrigerating and air conditioning apparatus that can automatically finish filling of a refrigerant after filling to an appropriate amount, without a need to install an extra valve except for a valve provided at a refrigerant cylinder, in between the refrigerating and air conditioning apparatus and the refrigerant cylinder, which is necessary for filling the refrigerant. The refrigerant filling apparatus of the refrigerating and air conditioning apparatus, which includes: a refrigerant circuit having a compressor, a four-way valve, an indoor side heat exchanger, a pressure reducing solenoid valve, an outdoor side heat exchanger, and an accumulator; a refrigerant cylinderconnected to the refrigerant circuit; a control unit that controls filling of the refrigerant from the refrigerant cylinderto the refrigerant circuit and decides refrigerant filling modes; and a display unit installed to the control unit and displays the refrigerant filling modes.