Patent · US Active

Air conditioning apparatus

US9739513B2 · kind B2 · utility

4Cited by

2References

14Claims

0Family size

Assignee

Mitsubishi Electric Corporation · JP

Inventors

Yasutaka Ochiai · Tokyo, JP
Fumitake Umezaki · Tokyo, JP
Kosuke Tanaka · Tokyo, JP

Key dates

Filing date	Jun 23, 2010
Grant date	Aug 22, 2017
Priority date	—
Expiry date	Sep 8, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF25B2600/21
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

An air-conditioning apparatus detects refrigerant leak with high-accuracy even in a state in which an excessive liquid refrigerant is stored in an accumulator. The air-conditioning apparatus determines that leakage of refrigerant has occurred from a refrigerant circuit in an operating state in which an excessive liquid refrigerant is stored in an accumulator, after a part of the excessive liquid refrigerant stored in the accumulator is moved and stored into a condenser, with the excessive liquid refrigerant remaining in the accumulator as a reference amount, when the excessive liquid refrigerant is less than the reference amount.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.