Smoke exhaust blockage control method of gas water heater and control system thereof

A technology of a gas water heater and a control method, which is applied to fluid heaters, lighting and heating equipment, etc., which can solve problems such as easy failures and unstable stability of air pressure switches, and achieve the effect of improving work stability

Active Publication Date: 2012-07-04
VATTI CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unstable stability of the air pressure switch in the above steps, it is relatively easy to fail. The performance is: when the air pressure is unstable, the gas water heater can be started, but it will automatically turn off in a few seconds or a few minutes.

Method used

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  • Smoke exhaust blockage control method of gas water heater and control system thereof
  • Smoke exhaust blockage control method of gas water heater and control system thereof
  • Smoke exhaust blockage control method of gas water heater and control system thereof

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Experimental program
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Embodiment Construction

[0023] A method for controlling smoke exhaust resistance of a gas water heater, comprising the following steps:

[0024] The first step is to set the working parameters of the fan: drive current I, drive voltage U, standard speed value V0, alarm upper limit speed value V3, compensation lower limit speed value V2, preset time T, compensation limit speed value V1, where VO< V1

[0025] In the second step, the fan speed detection module detects the fan speed V in real time;

[0026] Step 3: When it is detected that the fan speed V is greater than or equal to the current alarm upper limit speed value V3 and the duration exceeds the preset time T, that is, when the fan smoke exhaust is severely blocked, the water heater stops working and an alarm is processed;

[0027] Step 4: When the water heater is in the burning state, when it is detected that the speed V of the fan is between V3 and V2, that is, when the exhaust of the fan is blocked, the single-chip controller control...

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Abstract

The invention discloses a smoke exhaust blockage control method of a gas water heater and a control system thereof. The controller drives and controls the blower rotating speed of the gas water heater by changing the drive current, judges whether the smoke exhaust resistance of the water heater exceeds the warning limit based on the real-time monitoring on the blower rotating speed, closes the gas passage of the water heater and warns the water heater user when the smoke exhaust resistance exceeds the warning limit, and judges whether air supply for compensation is necessary when the smoke exhaust resistance is lower than the warning limit. The invention aims to provide the detecting method for judging the smoke exhaust condition at the air outlet by detecting the blower rotating speed, and the control method and the control system for controlling to improve the combustion working condition of the constant-temperature gas water heater in case of smoke exhaust blockage and improve the working stability of the water heater.

Description

[technical field] [0001] The invention relates to the field of gas water heaters, in particular to a method and system for controlling smoke exhaust resistance of gas water heaters. [Background technique] [0002] With the improvement of people's requirements for quality of life, more and more constant temperature and strong exhaust gas water heaters have entered people's daily life. At present, when the exhausting of the water heater is hindered, the main method is to detect the wind pressure. When it is detected that the wind pressure is not conducive to the operation of the water heater, the water heater is turned off. The specific steps are as follows: 1. The wind pressure switch detects whether the water heater is Smoke exhaust is blocked; 2. Turn off the water heater and report a fault code. Due to the unstable stability of the air pressure switch in the above steps, failures are more likely to occur. The performance is: when the air pressure is unstable, the gas wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H9/20
Inventor 黄启均毛远明闫旺
Owner VATTI CORP LTD
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