Title:
REFRIGERATION AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/168971
Kind Code:
A1
Abstract:
In order to provide a refrigeration air-conditioning device with which it is possible to perform an outdoor heat exchanger defrosting operation while continuing a heating operation when the heating is being performed with the air in a condition such that frost is adhering to the outdoor heat exchanger, this refrigeration air-conditioning device is equipped with: multiple refrigeration cycle circuits constructed so as to be capable of cooling/heating operation by connecting a compressor (1), a four-way valve (2), an indoor heat exchanger (3), a decompression device (4), and an outdoor heat exchanger (5) by means of piping; an outdoor fan (7) for the purpose of feeding air to exchange heat with the outdoor heat exchangers (5) of each refrigeration cycle circuit; multiple indoor fans (6) which are provided corresponding to the indoor heat exchangers (3) of each refrigeration cycle circuit, and which form respective air flows that pass through the indoor heat exchangers (3) and are fed to the space to be air-conditioned; and a control device (8) which, when at least one refrigeration cycle circuit begins a defrosting operation wherein the outdoor heat exchanger (5) is defrosted, controls the rotational frequency of the indoor fan (6) corresponding to the refrigeration cycle circuit performing the defrosting operation such that the temperature of the air that is mixed by the blowing of each indoor fan (6) reaches a prescribed temperature.
Inventors:
ISHIKAWA TOMOTAKA (JP)
NOMOTO SO (JP)
NOMOTO SO (JP)
Application Number:
PCT/JP2011/003225
Publication Date:
December 13, 2012
Filing Date:
June 08, 2011
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
ISHIKAWA TOMOTAKA (JP)
NOMOTO SO (JP)
ISHIKAWA TOMOTAKA (JP)
NOMOTO SO (JP)
International Classes:
F24F11/02; F25B47/02
Foreign References:
| JPH109725A | 1998-01-16 | |||
| JP2006116981A | 2006-05-11 | |||
| JP2002286273A | 2002-10-03 | |||
| JPH02208436A | 1990-08-20 | |||
| JP2003106712A | 2003-04-09 | |||
| JPH11173712A | 1999-07-02 | |||
| JPS5694164A | 1981-07-30 | |||
| JP2006116981A | 2006-05-11 |
Other References:
See also references of EP 2719966A4
Attorney, Agent or Firm:
KOBAYASHI, Hisao et al. (JP)
Hisao Kobayashi (JP)
Hisao Kobayashi (JP)
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Claims:
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