For the blower motor of HVAC system

For the blower motor of HVAC system

  • CN 101,677,225 B
  • Filed: 09/08/2009
  • Issued: 08/19/2015
  • Est. Priority Date: 09/08/2008
  • Status: Active Grant
First Claim
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1. a blower motor assembly, it comprises:

  • Variable velocity motor and motor controller;

    Electric power inputs, and it is with motor controller electrical couplings and comprise and to input and first and second neutrality inputs for receiving at least the first of AC electric power from AC power supplies;

    First testing circuit, the signal of correspondence for detecting the electric current in the first or second neutral input, and is sent to motor controller by it, to select at least one operational factor being used for motor, this testing circuit comprises;

    Current transformer, for detecting the electric current in the first neutral input or the second neutral input,A transistor, it is coupled with current transformer, for amplifying the output of current transformer, andCapacitor, it is coupling between transistor and the input of motor controller, for providing signal to motor controller.

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