(19)
(11) EP 2 273 207 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.06.2014 Bulletin 2014/25

(43) Date of publication A2:
12.01.2011 Bulletin 2011/02

(21) Application number: 10009996.9

(22) Date of filing: 03.02.2006
(51) International Patent Classification (IPC): 
F24F 1/00(2011.01)
 F04D 25/08(2006.01)
(84) Designated Contracting States:
ES GB

(30) Priority: 24.02.2005 JP 2005049354
18.11.2005 JP 2005334856

(60) Divisional application:
11177128.3 / 2390590

(62) Application number of the earlier application in accordance with Art. 76 EPC:
06712972.6 / 1873461

(71) Applicant: Mitsubishi Electric Corporation
Tokyo 100-8310 (JP)

(72) Inventors:
  • Ikeda, Takashi
    Tokyo 100-8310 (JP)
  • Edayoshi, Atsushi
    Tokyo 100-8310 (JP)
  • Suzuki, Kazutaka
    Tokyo 100-8310 (JP)

(74) Representative: Nicholls, Michael John 
J A Kemp 14 South Square Gray's Inn
London WC1R 5JJ
London WC1R 5JJ (GB)

   


(54) Ceiling-embedded-type air conditioning apparatus


(57) To obtain a highly reliable and low-noise ceiling-embedded-type air conditioning apparatus capable of preventing damaging of a motor by improving the motor cooling efficiency.
On the motor side of a downward-protruding hub 3c covering the motor 4 and fixing the rotary shaft 4a of the motor 4 in place, an air guiding cover 18 for forming a motor-side air passage 3f between the air guiding cover and the motor 4 and for guiding air flown into the motor-side air passage 3f from a gap formed between a chassis top panel 1b and a main plate 3b toward the motor 4. The air guiding cover 18 includes a circumferential surface portion 18c extending downward from the main plate 3b side. The air guiding cover 18 is formed so that the height position of the lower edge opening 18b of the circumferential surface portion 18c is lower than the height of a lower edge surface 4b of the motor 4. The hub 3c includes a plurality of openings 3d for letting air flown out from the lower edge opening 18b of the air guiding cover 18 into a gap between the air guiding cover 18 and the hub 3c to flow to a fan inner air passage 3e.







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