×

Method and apparatus for the sensing of refrigerant temperatures and the control of refrigerant loading

  • US 5,040,380 A
  • Filed: 09/08/1989
  • Issued: 08/20/1991
  • Est. Priority Date: 08/04/1988
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for the sensing by temperature sensing means of the temperature of refrigerant exiting from a refrigeration system evaporator coil outlet and for the control in accordance with the sensed temperature of a controllable evaporator valve feeding liquid refrigerant to the evaporator coil inlet, the method comprising:

  • feeding the refrigerant from the coil outlet to the interior of a turbulating and mixing device which has therein a refrigerant flow path, and which has an exterior wall having opposed interior and exterior surfaces, the exterior wall being of heat conductive material to permit sensing of the device interior flow path temperature through the exterior wall;

    producing in the flow path turbulence and mixing of the refrigerant by turbulance and mixing producing means that intercept the entire refrigerant flow, that changes the direction of the entire refrigerant flow, and that directs the entire refrigerant flow by the change of direction to impinge against the interior surface of the exterior wall to ensure turbulence and mixing of all liquid and vapour refrigerant phases present in the refrigerant flow and contact of only mixed phases with the interior surface;

    sensing the device interior flow path temperature at the exterior wall exterior surface by temperature sensing means applied to and in heat exchange contact with the wall exterior surface; and

    controlling the evaporator valve in accordance with the sensed temperature.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×