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Pressure washer with duty cycle temperature controller and method

  • US 6,435,424 B1
  • Filed: 07/27/2000
  • Issued: 08/20/2002
  • Est. Priority Date: 07/27/2000
  • Status: Expired due to Fees
First Claim
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1. A pressure washer for use by an operator comprising:

  • a heat exchanger having a water input adapted to connect to a water source and having a water output providing discharge water;

    a cycle timer responsive to the flow of water through the heat exchanger;

    a burner in thermodynamic communication with the heat exchanger for applying heat to the heat exchanger and to the water in the heat exchanger, said burner having a fuel input connecting a fuel source to the burner; and

    a fuel switch responsive to the cycle timer, said fuel switch selectively allowing fuel from the fuel source to be supplied to the burner via the fuel input, whereby the cycle timer controls a duty cycle of the fuel switch and thereby controls temperature of the water in the heat exchanger.

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