Blower for gas premix burners
AssigneePapst-Motoren GmbH & Co. KG
InventorsWolfgang Amrhein, Fritz Schmider
Life of this patent
Estimating the term…
Abstract
A gas premix burner in which gas and air are mixed in a suction region of an impeller to form a combustion mixture. The impeller is associated with a blower housing and an electronic control circuit board, all of which are arranged upstream in a blower chamber having at least one flame separating wall. The arrangement prevents the gas and the combustion mixture from reaching the motor landings or the printed circuit board.
Claims9
A burner fan for gas premix burners having a fan chamber with openings for a combustion mixture and at least one flame partition wall permeable to the combustion mixture, the fan comprising:
- a flange plate defining in part a fan housing part and also comprising a fan electronics unit, the flange plate being arranged upstream of the fan chamber that contains an impeller of the fan;
- a bearing carrier pipe (52) arranged on the inside of the fan housing part (5);
- bearings (53) for a motor shaft (54) of a fan motor (50) arranged in the bearing carrier pipe, with an end protruding from the bearing carrier pipe;
- the fan having an impeller (8) mounted on the protruding end of the motor shaft, and;
- the impeller (8) being connected to a rotor (7) of an electric motor without rotational play and having a negative pressure region receiving components of the combustion mixture, so that the impeller discharges the combustion mixture into the fan chamber.
Dependencies are inferred from the claim text.