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Draught fan control method and device of gas equipment

A control method, a technology controlled by a single-chip microcomputer, applied in pump control, mechanical equipment, lighting and heating equipment, etc., can solve problems such as reduced convenience and single function, and achieve the effect of ensuring normal combustion and ensuring safety.

Active Publication Date: 2011-06-01
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has a single function and can only turn off the gas, and the forced shutdown of the gas will greatly reduce the convenience of the user

Method used

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  • Draught fan control method and device of gas equipment
  • Draught fan control method and device of gas equipment
  • Draught fan control method and device of gas equipment

Examples

Experimental program
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Embodiment Construction

[0041] Since the fan of the gas water heater is connected to the outside world through the exhaust air duct, when the external wind pressure is too high or the exhaust port of the exhaust air duct is blocked, the current or power of the fan motor of the water heater will drop. Or the power will change with the external wind pressure or the blockage of the exhaust port. The present invention judges the current working state of the water heater caused by external wind pressure or exhaust blockage according to the monitoring of the current or power of the fan, and adjusts the air volume by adjusting the speed of the fan, so that the inside of the combustion device of the water heater is in contact with the outside wind. The pressure maintains a dynamic balance to ensure that the gas and air of the gas device are properly mixed to achieve good combustion conditions and ensure the normal combustion of the gas water heater, thereby avoiding a single shutdown of the gas.

[0042] In ...

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Abstract

The invention provides a draught fan control method of gas equipment, comprising the following steps of: A. determining the current working state of the gas equipment; B. controlling the rotation speed of a draught fan according to the current working state of the gas equipment: B1. judging that the inside combustion air quantity of the gas equipment in combusting is overlarge in the current working state, reducing the rotation speed of the draught fan; B2. judging that the gas equipment is in a normal combusting working state or passable combusting working state, maintaining the current rotation speed of the draught fan; B3. judging that the gas equipment is in a possible incomplete combusting working state, increasing the rotation speed of the draught fan; and B4. judging that the gas equipment is in an exhaust blockage working state, stopping supplying gas for the gas equipment. The invention also provides a corresponding control device. By using the method and the device provided by the invention, the rotation speed of the draught fan is regulated when the external air pressure is changed, so that singly closing the gas is avoided and the convenience for users is increased.

Description

technical field [0001] The invention relates to the technical field of gas control, in particular to a fan control method and device for gas equipment. Background technique [0002] Such as figure 1 Shown is a gas water heater, which mainly includes: a waterway 10; combustion equipment for heating the waterway 10, the combustion equipment includes a gas inlet valve 11, a combustion device and a heat exchange system 12; a fan 13 communicated with the combustion device and the heat exchange system 12 , and the exhaust air channel communicated with the air path; the control device 14 for controlling the combustion device combustion fan 13; the support frame 15 for fixing the above-mentioned various devices. [0003] When the gas water heater encounters excessive external wind pressure or the exhaust port of the exhaust air duct is blocked, if it is in the ignition process, the gas water heater will fail to ignite or ignite and deflagrate; if it is in the normal combustion proc...

Claims

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Application Information

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IPC IPC(8): F24H9/20F04D27/00
Inventor 郑涛李键康从超
Owner HAIER GRP CORP
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