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Automatic selfoptimising and pressure regulated control unit for pumps

  • US 7,245,992 B2
  • Filed: 08/02/2004
  • Issued: 07/17/2007
  • Est. Priority Date: 08/05/2003
  • Status: Expired due to Fees
First Claim
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1. An automatic control unit for a pump circulating at least one of a heating agent and a cooling agent between an energy source and an energy sink through an inlet into and an outlet from the energy sink comprising a pressure sensor for detecting a pressure change of the at least one agent, a controller for determining a temperature of the at least one agent from the detected pressure change of the at least one agent, and first and second temperature sensors for sensing a temperature of the at least one agent in the inlet and in the outlet, respectively, the temperature sensors generating corresponding temperature output signals, the controller receiving the temperature output signals and using a difference between them for controlling the operation of the pump after the detected pressure change has reached a pre-established threshold.

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