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REFRIGERATION CIRCUIT

  • US 20110056231A1
  • Filed: 04/27/2009
  • Published: 03/10/2011
  • Est. Priority Date: 04/30/2008
  • Status: Abandoned Application
First Claim
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1. A refrigeration circuit for a vehicle air-conditioning system comprising a compressor for compressing refrigerant, a condenser for condensing compressed refrigerant, a pressure reduction and expansion means for reducing in pressure and expanding condensed refrigerant, and an evaporator for evaporating pressure-reduced and expanded refrigerant in this order, characterized in that R1234yf is used as refrigerant and a shut-off valve for shutting off said circuit based on an excessive acceleration signal of said vehicle is provided at a position in said circuit each of upstream and downstream of said condenser.

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