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Low profile heating and colling unit for vehicles

  • US 5,193,609 A
  • Filed: 11/08/1991
  • Issued: 03/16/1993
  • Est. Priority Date: 04/19/1990
  • Status: Expired due to Term
First Claim
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1. A vehicle air treatment unit adapted for use in a vehicle having a passenger compartment and an engine compartment which are separated at least in-part by a firewall which is located rearward and downward from a vehicle dashboard within said vehicle compartment, comprising:

  • temperature exchange assembly including cooling coils for receiving a cooling fluid from said engine compartment and heating coils for receiving a heating fluid from said engine compartment;

    a coolant circulator, disposed within said engine compartment, for selectively circulating said cooling fluid through said cooling coils of said temperature exchange assembly;

    a heating circulator, disposed within said engine compartment, for selectively circulating said heating fluid through said heating coils of said temperature exchange assembly;

    a coil housing for said temperature exchange assembly, having an input port for receiving air and an exhaust port;

    a plurality of intake and exhaust members, for said cooling and heating coils, extending generally rearward from said coil housing, passing through ports provided in said firewall for coupling with said heating and coolant circulators within said engine compartment;

    a blower motor disposed at least in-part within said coil housing adjacent said temperature exchange coils, having a motor shaft extended outward from said exhaust port of said coil housing;

    a motor mount coupled to said coil housing at said exhaust port for coupling said blower motor in a fixed position relative to said coil housing;

    a blower wheel coupled to said motor shaft at said exhaust port of said coil housing;

    a blower housing disposed about said blower wheel;

    means for mounting at least said coil housing to said firewall of said vehicle within said passenger compartment and under said dashboard;

    wherein said blower motor operates to pull air through said temperature exchange coils by rotating said blower wheel within said blower housing; and

    means for selecting between a cooling mode of operation and a heating mode of operation, wherein during said cooling mode cooling fluid is circulated through said cooling coils and heating fluid is not circulated through said heating coils, and wherein during said heating mode of operation heating fluid is circulated through said heating coils and cooling fluid is not circulated through said cooling coils.

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