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:
Dec. 03, 2019
Filed:
Aug. 13, 2015
Mitsubishi Heavy Industries Thermal Systems, Ltd., Tokyo, JP;
Abstract
The purpose of the present invention is to achieve stable operation when using a low pressure, low GWP refrigerant. In the present invention, a control device () is provided with an estimation unit (), a determination unit (), and an activation control unit (). The estimation unit () estimates the amount of air entering using a degree of influence of air entering, which represents the ease with which air enters determined by the structure of the chiller, and a variable obtained by a function including pressure as a parameter. The determination unit () determines whether a total value for the amount of air entering is greater than or equal to a preset tolerance value. The activation control unit () activates a bleed device when the total value of the amount of air entering is equal to or greater than the tolerance value.