Mobile air conditioning system and control mechanisms therefor
OwnerRene F. Bascobertinventor
Life of this patent
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Abstract
The performance of mobile air conditioning systems is improved with the use of a pressure sensing valve to control refrigerant flow in the system. The pressure sensing valve is connected between the condenser and the evaporator. The control valve senses the refrigerant pressure adjacent the evaporator, ie. the input, or output, or the combination of both, to control the refrigerant flow through the evaporator in a manner to improve the performance of the system. The reference pressure for the valve can be the atmosphere or a fixed or variable source. Various other operating variables can be sensed to control the variable source in a manner to interact with the sensed pressure to provide added control of system performance.
Claims6
In vehicular air conditioning systems including a compressor, a condenser, an evaporator, and refrigerant flow control apparatus coupled between the condenser and the evaporator, wherein the cooling capacity of the air conditioning system changes with engine speed, the speed of movement, and the environment in which the vehicle is operating, a method for controlling the air conditioning system to compensate for environmental changes including the steps comprising:
- sensing the environment in which the vehicle is operating, and
- controlling the flow of refrigerant between the condenser and the evaporator through the flow control apparatus as a function of the environment in a direction to enhance the cooling capacity of the air conditioning system.
Dependencies are inferred from the claim text.