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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.:

US 12123629 B1

PDFFull Text
Date of Patent:
Oct. 22, 2024

Filed:

Sep. 22, 2023

Heat source unit and refrigeration device having low-stage and high-stage compressors with four-way switching valve

Applicant:

Daikin Industries, Ltd., Osaka, JP;

Inventors:

Masaaki Takegami, Osaka, JP;

Naoto Kimura, Osaka, JP;

Masahiko Kaneda, Osaka, JP;

Assignee:

DAIKIN INDUSTRIES, LTD., Osaka, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Jerry-Daryl Fletcher

Assistant Examiner:

Daniel C Comings

Int. Cl.
CPC ...
F25B 1/10 (2006.01); F25B 13/00 (2006.01); F25B 41/26 (2021.01); F25B 49/02 (2006.01);
U.S. Cl.
CPC ...
F25B 1/10 (2013.01); F25B 13/00 (2013.01); F25B 41/26 (2021.01); F25B 49/022 (2013.01); F25B 2400/075 (2013.01); F25B 2600/025 (2013.01); F25B 2600/0251 (2013.01); F25B 2600/2501 (2013.01);
Abstract

A heat source unit connected to a utilization-side unit and configured to perform a refrigeration cycle includes a low-stage compressor, a high-stage compressor, a four-way switching valve, a low-stage pipe, and a controller. The low-stage pipe is provided in parallel with the low-stage compressor, and the refrigerant flows therethrough while the low-stage compressor is stopped. The controller outputs an instruction signal for actuating the four-way switching valve, to the four-way switching valve while the low-stage compressor is stopped and the high-stage compressor is operating.

Find Patent Forward Citations

Takegami, Masaaki. (2024). Heat source unit and refrigeration device having low-stage and high-stage compressors with four-way switching valve (U.S. Patent No. 12123629). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12123629

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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