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Control device for refrigeration or air conditioning systems

  • US 7,711,451 B2
  • Filed: 04/20/2005
  • Issued: 05/04/2010
  • Est. Priority Date: 05/18/2004
  • Status: Active Grant
First Claim
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1. A control system for an air conditioning or refrigeration unit, comprising:

  • a control device housing;

    a main processor provided inside the control device housing controlling at least one of a temperature, a fan, and a defrosting procedure of the air conditioning or refrigeration unit in dependence on respectively prevailing input values, andcontact points provided inside the control device housing for a coprocessor separate from the main processor, the contact points being associated with respective coprocessor input and output signals, with at least one contact point being provided for coprocessor input from at least one of temperature sensors and pressure sensors of a coolant circuit and one contact point being provided for a coprocessor output connected to an electronic expansion valve provided in the coolant circuit.

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