Title:
CEILING EMBEDDED INDOOR UNIT
Document Type and Number:
Japanese Patent JP3521323
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce a ventilating sound while preventing a beat sound of a blower while holding a high cooling or heating capability in a ceiling embedded indoor unit for an air conditioner.
SOLUTION: In the ceiling embedded indoor unit comprising a U-shaped heat exchanger 11 installed in a housing 1 embedded in a ceiling and having a bottom connected at two sides to one side at one end side, blowers 3a, 3b disposed in an inner space of the exchanger 11, a decorative panel mounted on a lower surface of the housing 1 and an air suction port formed between two long air outlets corresponding to the sides of the exchanger 11 and the air outlet, and a controller; the controller controls to accelerate a rotational speed of the blower 3a to the U-shaped trough and to decelerate a rotational speed of the blower 3b to the U-shaped open end side.
Inventors:
Hata, Yoshiki
Sano, Takashi
Kosugi, Shinichi
Sano, Takashi
Kosugi, Shinichi
Application Number:
JP36021698A
Publication Date:
April 19, 2004
Filing Date:
December 18, 1998
Export Citation:
Assignee:
HITACHI LTD
International Classes:
F24F11/04; F24F1/0047; F24F1/0063; F24F1/0067; (IPC1-7): F24F11/04
Attorney, Agent or Firm:
鵜沼 辰之
Previous Patent: DIFFERENTIAL-PRESSURE MEASURING APPARATUS
Next Patent: OPTICAL FIBER, OPTICAL SIGNAL RECEIVER AND OPTICAL SIGNAL TRANSMITTER
Next Patent: OPTICAL FIBER, OPTICAL SIGNAL RECEIVER AND OPTICAL SIGNAL TRANSMITTER