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Air conditioning system suitable for use in an electric vehicle

  • US 5,524,446 A
  • Filed: 04/19/1994
  • Issued: 06/11/1996
  • Est. Priority Date: 11/27/1991
  • Status: Expired due to Term
First Claim
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1. An air conditioning system for use in a vehicle comprising:

  • a compressor for compressing a refrigerant;

    interior heat exchanging means disposed inside said vehicle and connected to said compressor;

    means for expanding said refrigerant connected to said interior heat exchanging means;

    exterior heat exchanging means disposed outside of said vehicle and connected to said compressor and said interior heat exchanging means;

    a switching valve provided between said interior heat exchanging means and said exterior heat exchanging means for selectively feeding said refrigerant in a state in which said refrigerant has a high temperature and a high pressure from said compressor to one of said exterior heat exchanging means and said interior heat exchanging means;

    sensor means for detecting a temperature of a passenger compartment of said vehicle;

    an intake damper which can be opened or closed for introducing outside air into said vehicle;

    at least one floor damper, provided at a position downstream from said interior heat exchanging means, said damper being openable and closable for introducing air toward a floor of said passenger compartment; and

    control means for controlling a degree of opening of said intake damper and said floor damper based on a temperature detected by said sensor means, wherein said interior heat exchanging means comprises at least a first interior heat exchanger and a second interior heat exchanger which are connected in series with each other.

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