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:
Apr. 29, 2003
Filed:
Jul. 10, 2001
Hitachi, Ltd., Tokyo, JP;
Abstract
In a ceiling embedded type indoor unit for an air conditioner, an wind sound is reduced while preventing a beat sound of blowers with keeping a high air conditioning capacity. In the ceiling embedded type indoor unit provided with a U-shaped heat exchanger which is placed in a casing embedded in a ceiling and is constituted by two side portions and a bottom portion connecting the side portions at one end side, blowers arranged in an inner space of the heat exchanger, a decorative panel mounted to a lower surface of the casing and having 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, and a control apparatus, the control apparatus controls so that the number of rotation of the blower near a valley portion of the U-shaped heat exchanger becomes high and the number of rotation of the blower near the open end of the U-shaped heat exchanger becomes low.