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Proportional valve working range adaptive adjustment method and gas water heater

A technology of self-adaptive adjustment and working range, applied in the field of valve adjustment, can solve problems such as low production efficiency, and achieve the effect of saving labor costs and accurate adjustment accuracy

Active Publication Date: 2022-01-18
QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the adjustment of the proportional valve of the existing gas water heater depends entirely on manual adjustment of the potentiometer and the production efficiency is relatively low, the present invention proposes an adaptive adjustment method for the working range of the proportional valve, which can be automatically adjusted automatically and solves the above problems

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  • Proportional valve working range adaptive adjustment method and gas water heater

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Embodiment 1

[0031] This embodiment proposes an adaptive adjustment method for the working range of the proportional valve, such as figure 1 shown, including the following steps:

[0032] S1. Turn on the power and start up, and enter the adjustment mode;

[0033] S2. The error judging step, including the error judgment of the smallest working mode and the largest working mode, wherein the error judgment of the smallest working mode includes:

[0034] Control the proportional valve to enter the minimum working mode, and collect the proportional valve control signal PWM value A output by the microcontroller in the current working mode;

[0035] Calculate the sampling voltage Vmin corresponding to the value A, and judge whether the sampling voltage Vmin is within the normal error range (amin, bmin). If so, execute the error judgment of the largest working mode; otherwise, judge it as an error fault in the smallest working mode and stop the adjustment , report an error;

[0036] The error j...

Embodiment 2

[0053] This embodiment proposes a gas water heater. The gas water heater includes at least a proportional valve. The adjustment method of the proportional valve includes the self-adaptive adjustment method for the working range of the proportional valve described in any one of the first embodiment. For details, please refer to the first embodiment. recorded, and will not repeat them here.

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Abstract

The invention discloses a method for self-adaptive adjustment of the working range of a proportional valve and a gas water heater. The method includes the following steps: (1), power on and start, and enter the adjustment mode; (2), the error judgment step, including the minimum number working mode Error judgment and maximum working mode judgment, (3), calculate the proportional valve control signal PWM adjustment range C, C=B-A; (4), divide the adjustment range C into N parts, each adjustment unit C*1 / N corresponds to the 1 / N opening of the proportional valve. When the proportional valve is fully open, the opening is 1, where N is a positive integer greater than 1. The proportional valve adjustment method of the present invention only judges the proportional valves that are not within the normal range and then performs manual debugging, which can greatly save labor costs. The PWM value of the control signal divides the interval of the two values ​​to obtain the minimum adjustment unit of the proportional valve opening, which makes the adjustment accuracy more accurate.

Description

technical field [0001] The invention relates to the technical field of valve adjustment, in particular to a method for self-adaptive adjustment of the working range of a proportional valve and a gas water heater. Background technique [0002] In existing gas water heaters, because the proportional valve requires a maximum and minimum current corresponding to the opening degree, the proportional valve current needs to work within this range. At present, all production lines rely on manual adjustment of potentiometers to correct the maximum and minimum values. The production efficiency is relatively low, which affects the production beat, and the manual adjustment error is relatively large. Contents of the invention [0003] In order to solve the technical problem that the adjustment of the proportional valve of the existing gas water heater depends entirely on the manual adjustment of the potentiometer and the production efficiency is relatively low, the present invention p...

Claims

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Application Information

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IPC IPC(8): F16K37/00G05B13/04
CPCG05B13/042F16K37/0083
Inventor 郑涛许巧丽郭亮李键王玉刚杨玉敏
Owner QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER