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Fire regulating device

A technology of adjusting device and firepower, which is applied in the direction of valve device, regulating fuel supply, valve operation/release device, etc. It can solve the problems of opening degree and actual opening degree error, out of adjustment, non-detection of flow regulating mechanism opening, etc. , to achieve a reliable correction effect

Inactive Publication Date: 2009-04-22
RINNAI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the case of using a stepping motor, there may be a misalignment error such as an error between the assumed opening degree and the actual opening degree from the number of pulses supplied.
[0006] For this reason, although there is a method of not detecting the opening degree of the flow regulating mechanism, but controlling the opening degree only by the number of pulses supplied to the stepping motor, it is still necessary to correct for out-of-adjustment.

Method used

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Examples

Experimental program
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Embodiment Construction

[0018] refer to figure 1 , GT is a gas bench with 2 furnace burners BC and 1 grill burner BG. These respective burners BC and BG can supply gas from the gas supply pipe GP. The valve assembly 1 for thermal power adjustment is connected in series to each burner BC, BG, respectively.

[0019] This valve assembly 1 is composed of an electromagnetic safety valve 2 and a flow regulating valve 3. The electromagnetic safety valve 2 opens and closes the gas supply passages to each burner BC, BG, and the flow regulating valve 3 opposite to each The gas flow rate supplied by the burners BC and BG is increased or decreased to adjust the firepower.

[0020] refer to figure 2 , The safety valve 2 incorporates an electromagnetic coil and a spring in the electromagnetic coil portion 21 . The valve body 20 is always exerted force in the valve closing direction by the spring, and once the electromagnetic coil is energized, the valve body 20 is driven in the valve opening direction against...

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Abstract

When constantly detecting the opening of the flowrate adjusting valve (3) that is driven by a stepping motor (34) with the use of a rotary encoder, etc., the precision of the opening control is increased, but the control device becomes complicated. Therefore, although the opening of the flowrate adjusting valve can be controlled by means of the pulse number supplied to the stepping motor (34), it is necessary to correct positively the pulse deviation due to the step-out. In accordance with this invention, when the micro switch (5) positioned at a position that is adjacent to a completely turn off position and to which the gas amount required for igniting can be supplied is ON, the deviation of the pulse number and the actual opening is corrected.

Description

technical field [0001] The present invention relates to a fire power adjusting device which controls the gas supply amount of a burner provided in a gas appliance, and performs ignition and fire adjustment of the burner. Background technique [0002] Japanese Patent No. 2129580 is known as a conventional fire power adjustment device, and it is a structure in which a motor-driven electric valve equivalent to a flow rate adjustment mechanism for fire power adjustment is installed on each burner. In this configuration, a normal motor is used, and therefore, a position sensor needs to be provided on a part of the drive system including the rotary shaft of the motor. And the opening degree is adjusted while detecting the opening degree of the electric valve through the position sensor. [0003] In this kind of fire adjustment device mechanism, in order to detect the opening degree of the electric valve, a position sensor must be provided. And the opening of the electric valve m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23N1/00F16K31/04F16K37/00F23K5/00
CPCF16K31/04F23K5/002F23N1/007
Inventor 林雄一清水正则水谷圭一
Owner RINNAI CORP
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