Heater for mobile units
First Claim
1. A heater for mobile units, comprising:
- a liquid fuel burner;
a combustion air blower with a motor;
liquid fuel supply connected to a mixing device for generating the fuel-air mixture;
combustion chamber including an igniting electrode arrangement; and
, control means for controlling the ignition process, said control means connected to said air blower and connected to said mixing device for shutting off electric power to said blower motor and simultaneously or shortly thereafter causing ignition by said igniting electrode arrangement to start the ignition process while the speed of revolution of the combustion air blower is below the operating speed and above a speed of no revolution.
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0 Petitions
Accused Products
Abstract
In space heaters with pressure atomization burners, which have a small combustion chamber volume, good mixing of air with fuel is achieved practically only in the case of relatively high air flow velocities, which leads, however, to difficulties in terms of ignition, especially at high operating voltages and low temperatures. The blower motor is therefore started first when putting the heater into operation, after which it is disconnected from the power source, so that the speed will again decrease, after which the high-voltage ignition and the fuel supply are turned on, so that the ignition can take place at reduced blower speed, and the high-voltage ignition is turned off and the blower motor is restarted after the flame has been recognized in the burner.
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Citations
14 Claims
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1. A heater for mobile units, comprising:
- a liquid fuel burner;
a combustion air blower with a motor;
liquid fuel supply connected to a mixing device for generating the fuel-air mixture;
combustion chamber including an igniting electrode arrangement; and
, control means for controlling the ignition process, said control means connected to said air blower and connected to said mixing device for shutting off electric power to said blower motor and simultaneously or shortly thereafter causing ignition by said igniting electrode arrangement to start the ignition process while the speed of revolution of the combustion air blower is below the operating speed and above a speed of no revolution. - View Dependent Claims (2, 3, 4, 5, 6)
- a liquid fuel burner;
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7. A method for operating a heater for mobile units having a burner for liquid fuel, a combustion air blower with a motor, a mixing device for producing an air-fuel mixture, an igniting electrode device, a combustion chamber, and a control device for controlling the ignition, the method comprising the steps of:
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turning off the air blower motor; allowing the motor to slow down but not stop;
igniting the air-fuel mixture. - View Dependent Claims (8, 9, 10, 11)
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12. A method for operating a heater for mobile units having a burner for liquid fuel, a combustion air blower with a motor, a mixing device for producing an air-fuel mixture, an igniting electrode device, a combustion chamber, and a control device for controlling the ignition, the method comprising the steps of:
starting the heater;
switching on the air blower motor;
idling the air blower motor after a first predetermined time after said step of starting up the heater;
supplying the fuel to the combustion chamber;
igniting the air-fuel mixture;
repeating said step of switching on the air blower motor.- View Dependent Claims (13, 14)
Specification