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:
Feb. 12, 2002
Filed:
Dec. 16, 1999
Hitachi, Ltd., Tokyo, JP;
Abstract
In a ceiling embedded indoor unit for an air conditioner, blower noise is prevented while maintaining a high air conditioning capacity. The ceiling embedded indoor unit is provided with a U-shaped heat exchanger placed in a casing embedded in a ceiling. The U-shaped heat exchanger includes two side portions, a portion connecting the side portions at one end, and blowers arranged in an inner space of the heat exchanger. A decorative panel is mounted to a lower surface of the casing that has two elongated air outlet ports in correspondence to the side portions of the heat exchanger and an air suction port formed between the air outlet ports. A control apparatus controls the number of rotations of the blower near the valley portion of the U-shaped heat exchanger to be higher than the blower near the open end.