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:
Oct. 10, 2023
Filed:
Oct. 04, 2019
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An airtightness evaluation device includes a differential pressure gauge to output a pressure difference between two spaces connected to two joints. A system joint for connecting a refrigeration cycle system is connected to one joint of the differential pressure gauge. A pressure vessel is connected to the other joint of the differential pressure gauge. The airtightness evaluation device includes a bypass circuit to connect the system joint and the pressure vessel to each other with bypassing the differential pressure gauge, and a bypass valve to open/close the bypass circuit. The airtightness evaluation device also includes a supply source joint for supplying a pressurization gas to the pressure vessel.