| 摘要 |
PURPOSE:To prevent incomplete combustion and also generation of CO gas by controlling the rotational speed of a blower for combustion according to a value of pressure detected by an atmospheric pressure detector which is provided near the main body of a burner. CONSTITUTION:A combustion cylinder 2 and burner 3 are provided in the main body 1, and combustion air is supplied to the burner 3 through a supply air pipe 5 by a blower 4 for combustion. On the other hand, the fuel supplied by a fuel pump 6 passes through a fuel pipe 7 and is delivered via a carburetor into the burner 3 and ignited by an ignitor 8 to burn. An atmospheric pressure detector 9 sends its detection output to a rotational speed controller 10 to control the rotational speed of a blower 4 for combustion in order to offset the increase and decrease in the air density. For example, when the atmospheric pressure falls when a burner is used in high altitude, etc., the air density decreases so that for the same amount (volume) of air the pressure difference in the pressures in front of and at the rear of a throttle plate 5a becomes smaller. if the output of this pressure difference is compared with the output from the atmospheric pressure detector 9 and made an input to a rotational speed controller 10, it is possible to cope exactly with high altitudes.
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