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:
Jan. 23, 2018
Filed:
Dec. 02, 2014
Daikin Industries, Ltd., Osaka-shi, Osaka, JP;
Akihiro Eguchi, Sakai, JP;
Shigeki Kamitani, Sakai, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A refrigerant channel switching unit is disposed between a heat source unit and a utilization unit to switch flow of refrigerant in the refrigerant circuit. The refrigerant channel switching unit includes a first refrigerant pipe connected to a suction gas communicating pipe, a second refrigerant pipe connected to a high-low pressure gas communicating pipe, third and fourth refrigerant pipes, and first and second electric valves mounted to the first and second refrigerant pipes, respectively. The third refrigerant pipe is connected to the first and second refrigerant pipes and a gas pipe. The fourth refrigerant pipe is connected at ends to a liquid communicating pipe and a liquid pipe. A minute channel is formed in the first or second electric valve. The minute channel enables the refrigerant to flow through the minute channel even when an opening degree of the valve is set to be the lowest degree.