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Device for heating/air-conditioning of the passenger compartment of a motor vehicle

  • US 20020014330A1
  • Filed: 07/30/2001
  • Published: 02/07/2002
  • Est. Priority Date: 07/28/2000
  • Status: Abandoned Application
First Claim
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1. Device for heating/air-conditioning of the passenger compartment of a motor vehicle, characterised in that it comprises, in combination:

  • a closed circuit in which a refrigerant fluid circulates between an evaporator and a condenser;

    a cold-liquid duct (22) , called “

    cold duct”

    , in thermal contact with the evaporator (12), and a hot-liquid duct (24) , called “

    hot duct”

    , in thermal contact with the condenser (14);

    a first loop (26) travelled by a liquid under the action of a pump (32) and comprising a heat exchanger (28) suitable for being swept by a heat-carrying fluid, especially by an airflow (F1);

    a second loop (38) travelled by a liquid under the action of a pump (40), and comprising a heat exchanger (42) suitable for being swept by an airflow (F2) to be sent into the passenger compartment (H); and

    changeover-switching means comprising two four-way valves (34, 36) , interposed between the cold duct, the hot duct, the first loop and the second loop, and capable of being placed selectively either into a heating position in which the first loop (26) is in communication with the cold duct (22), while the second loop (38) is in communication with the hot duct (24), or into a cooling position in which the first loop (26) is in communication with the hot duct (24), while the second loop (38) is in communication with the cold duct (22).

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