Patent ID: 6543240
Filing Date: 2003-04-08
Classification: B60H,F25B,F25D,F28D

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 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.