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:
Nov. 04, 2025
Filed:
Sep. 29, 2020
Daikin Industries, Ltd., Osaka, JP;
Daikin Europe N.v., Ostend, BE;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
DAIKIN EUROPE N.V., Ostend, BE;
Abstract
A heat pump includes a compressor, a first heat exchanger, a main expansion mechanism and a second heat exchanger arranged in a refrigeration path, the compressor having a suction port, a compression port and an injection port; a gas injection valve connected on a first side to the refrigeration path between the first heat exchanger and the main expansion mechanism and on a second side to the injection port of the compressor; a liquid injection valve connected on a first side to the refrigeration path between the first heat exchanger and the main expansion mechanism and on a second side between the second heat exchanger and the suction port of the compressor; and a controller configured to operate the gas injection valve to inject partly gaseous refrigerant into the compressor, and operate the liquid injection valve to inject liquid refrigerant into the compressor through the suction port of the compressor.