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:
May. 05, 2020
Filed:
Mar. 31, 2014
Panasonic Appliances Refrigeration Devices Singapore, Singapore, SG;
Masanori Kobayashi, Shiga, JP;
PANASONIC APPLIANCES REFRIGERATION DEVICES SINAPORE, Singapore, SG;
Abstract
In a sealed compressor () of the present invention, a valve plate () is provided with a plurality of discharge holes () and a plurality of discharge valves () which open and close the plurality of discharge holes. A tip end surface () of a piston () is provided with a plurality of convex portions (), at least tip end portions of which are located inside of the discharge holes () in a state in which the piston () is located at a top dead center. When a plurality of discharge passages () of the refrigerant gas are defined as spaces formed between convex portion side surfaces () and discharge hole inner peripheral surfaces (), in a state in which the plurality of convex portions () are located inside of the plurality of discharge holes (), respectively, the volumes of the plurality of convex portions () are made different from each other, to make the total cross-sectional areas of the plurality of discharge passages () different from each other.