Combination airconditioning/heat system for emergency vehicle
OwnerWilliam W. Graftoninventor
Life of this patent
Estimating the term…
Abstract
An air conditioning arrangement for an emergency vehicle or the like including an evaporator unit comprising closely spaced first and second tubing arrays, with each array being operably associated with a respective refrigerant compressor. The tubing of each array is formed into coils involving a number of essentially parallel tubing runs connected by curved end members, with substantial portions of the tubing being provided with fins. A low voltage blower is positioned to cause air to be pulled across the tubing of the first and second tubing arrays and between the fin members.
Claims21
An air conditioning arrangement for an emergency vehicle or the like including an evaporator unit comprising closely spaced first and second tubing arrays, with each array being operably associated with a respective refrigerant compressor, the tubing of each array being formed into coils involving a number of essentially parallel tubing runs connected by curved end members, substantial portions of said tubing being provided with fins, and blower means positioned to cause air to be pulled across the tubing of said first and second tubing arrays and between said fin members, and a third tubing array operatively positioned alongside said evaporator unit containing said first and second tubing arrays, said third tubing array being adapted to carry a heated liquid on occasion, and an engine-driven compressor operatively mounted on the vehicle causing refrigerant to flow actively through said first tubing array, with water from the radiator of the engine that powers the vehicle being provided on an as-needed basis to said third tubing array, to be utilized in the event the temperature in the interior of the vehicle needs to be raised.
A combinational air conditioning arrangement for an emergency vehicle or the like having an evaporator supporting means, an air conditioner evaporator unit mounted upon the supporting means, said evaporator unit involving first and second tubing arrays, with each array being operably associated with a respective compressor, the tubing of each array being formed into coils involving a number of essentially parallel tubing runs connected by curved end members, said first and second tubing arrays being interconnected by a multiplicity of fin members of thin, thermally conductive material, and blower means positioned to cause air to be pulled across the tubing of said first and second tubing arrays and between said fin members, and a third tubing array operatively positioned alongside said evaporator containing said first and second tubing arrays, said third tubing array being adapted to carry a heated liquid on occasion, and an engine-driven compressor operatively mounted on the vehicle causing refrigerant to flow actively through said first tubing array, with water from the radiator of the engine that powers the vehicle being provided on an as-needed basis to said third tubing array, to be utilized in the event the temperature in the interior of the vehicle needs to be raised.
A novel combinational air conditioning arrangement for an emergency vehicle or the like having an evaporator supporting means, an air conditioner evaporator unit mounted upon the supporting means, said evaporator unit involving first and second tubing arrays, with each array being operably associated with a respective refrigerant compressor, a first of said compressors being an engine-driven compressor operatively mounted on the vehicle for causing refrigerant to flow actively through said first tubing array, the tubing of each array being formed into coils involving a number of essentially parallel tubing runs connected by curved end members, with the plane of said first tubing array being substantially parallel to the plane of said second tubing array, each of said tubing arrays having a multiplicity of fins thereon, made of thin, thermally conductive material, a first type of Freon being utilized in said first tubing array, and a second type of Freon being utilized in said second tubing array, blower means positioned to cause air to be pulled across the tubing of said first and second tubing arrays and between the fins thereon, said blower means being operative on low voltage and providing a flow of air over both of said tubing arrays at such time as refrigerant is actively flowing through at least one of said tubing arrays, and a single thermostat for controlling the two separate air conditioning systems represented by said first and second tubing arrays and their related components.
A novel combinational air conditioning arrangement for an emergency vehicle or the like having an evaporator supporting means, an air conditioner evaporator unit mounted upon the supporting means, said evaporator unit involving first and second tubing arrays, with each array being operably associated with a respective refrigerant compressor, a first of said compressors being an engine-driven compressor operatively mounted on the vehicle for causing refrigerant to flow actively through said first tubing array, the tubing of each array being formed into coils involving a number of essentially parallel tubing runs connected by curved end members, with the plane of said first tubing array being substantially parallel to the plane of said second tubing array, each of said tubing arrays having a multiplicity of fins thereon, made of thin, thermally conductive material, a first type of Freon being utilized in said first tubing array, and a second type of Freon being utilized in said second tubing array, and blower means positioned to cause air to be pulled across the tubing of said first and second tubing arrays and between the fins thereon, said blower means being operative on low voltage and providing a flow of air over both of said tubing arrays at such time as refrigerant is actively flowing through at least one of said tubing arrays, said first and second tubing arrays being interconnected by a multiplicity of fin members of thin, thermally conductive material, and a third tubing array residing in an essentially integral relationship with said first and second tubing arrays, sharing fins common to said first and second tubing arrays.
A novel combinational air conditioning arrangement for an emergency vehicle or the like having an evaporator supporting means, an air conditioner evaporator unit mounted upon the supporting means, said evaporator unit involving first and second tubing arrays, with each array being operably associated with a respective refrigerant compressor, with said first compressor, operatively associated with said first tubing array being installed at a location in the vehicle spaced from the location of the compressor associated with said second tubing array, the tubing of said first and second arrays being formed into coils involving a number of essentially parallel tubing runs connected by curved end members, with the plane of said first tubing array being substantially parallel to the plane of said second tubing array, each of said first and second tubing arrays being equipped with a multiplicity of fin members of thin, thermally conductive material, with a first type of Freon being utilized in said first tubing array, and a second type of Freon is utilized in said second tubing array, blower means positioned to cause air to be pulled across the tubing of said first and second tubing arrays and between said fin members, and a single thermostat for controlling the two separate air conditioning systems represented by said first and second tubing arrays and their related components.
Dependencies are inferred from the claim text.