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REFRIGERANT CYCLE DEVICE

  • US 20120291467A1
  • Filed: 05/16/2012
  • Published: 11/22/2012
  • Est. Priority Date: 05/20/2011
  • Status: Active Grant
First Claim
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1. A refrigerant cycle device for a vehicle, adapted to adjust a temperature of air blown into an air-conditioning target space by utilizing heat of refrigerant circulating in a refrigerant cycle of the refrigerant cycle device, the refrigerant cycle device comprising:

  • a compressor configured to compress refrigerant and to discharge the compressed refrigerant;

    a discharge capacity control portion configured to control a discharge capacity of the compressor; and

    a noise determination portion configured to determine whether a noise audible to a passenger, other than a refrigerant passing noise generated when refrigerant passes through the refrigerant cycle, is in a low noise state in which a level of the audible noise other than the refrigerant passing noise is equal to or lower than a predetermined noise level, whereinthe discharge capacity control portion performs a normal control in which the discharge capacity of the compressor is increased in accordance with increase of an air-conditioning thermal load of the air-conditioning target space, andthe discharge capacity control portion performs a gradual activation control in which the discharge capacity of the compressor is set to be lower than the discharge capacity determined in the normal control, when the noise determination portion determines that the audible noise other than the refrigerant passing noise is in the low noise state at an activation time of the compressor.

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