An automatic fault detection method for a gas water heater

A gas water heater, automatic detection technology, applied in the combustion method, fluid heater, adjustment of fuel supply and other directions, can solve the problem of increasing the minimum combustion power, high outlet water temperature, unable to completely solve the problems of flameout and whistling, etc., to avoid Low voltage and/or whistling alarm, improving intelligence and reducing the effect of fault alarm rate

Active Publication Date: 2021-06-15
NINGBO FOTILE KITCHEN WARE CO LTD
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AI Technical Summary

Problems solved by technology

[0003] In the prior art, the main method to solve the lack of air pressure and howling of the gas water heater is to adjust the nozzle aperture of the burner, but the method of adjusting the nozzle aperture will still occur when the air pressure environment changes, and it cannot completely solve the flameout , howling faults, and after each fault is eliminated, the next time the same fault occurs when the machine is turned on, it will still alarm, requiring manual intervention to adjust again, and the intelligence of troubleshooting is low; at the same time, the change of the nozzle aperture will bring the minimum combustion power Larger, resulting in higher outlet water temperature, which affects the user's use effect

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  • An automatic fault detection method for a gas water heater
  • An automatic fault detection method for a gas water heater
  • An automatic fault detection method for a gas water heater

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] Such as Figure 1 ~ Figure 4 As shown, this embodiment discloses a test method for hot water performance of a gas water heater, especially a test method for low-pressure combustion flameout and combustion whistle faults of a gas water heater. The test method includes the following steps:

[0027] (1), first, initialize the combustion control parameters of the gas water heater, and restore the combustion control parameters to the default parameter values ​​of normal combustion; wherein, the initialized control parameters include the theoretically calculated fan speed R 理论 and the actual fan speed R 实际 The difference △R, theoretically calculated proportional valve output current I 理论 and the actual proportional valve output current I 实际 The difference △I, and the following conditions are met: △R=0, △I=0, that is, the gas water heater b...

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Abstract

An automatic fault detection method for a gas water heater, characterized in that: the test method includes the following steps: (1) initializing the combustion control parameters of the gas water heater; (2) judging whether the gas water heater meets the combustion working conditions; (3) Judging whether the water flow is stable; (4) judging whether it is the first detection of low pressure and / or howling fault; (5) adjusting the control parameters of the water heater according to the fault type; (6) saving the control parameters; (7) entering into normal combustion Work. The invention has the advantages of adjusting and memorizing the control parameters of the gas water heater, and when the low pressure and / or howling situation occurs again in the next combustion process, the fan speed and the proportional valve current can be directly and automatically adjusted to the normal combustion state, avoiding low pressure and / or howling alarm.

Description

technical field [0001] The invention relates to a fault detection method for a gas water heater, in particular to a fault automatic detection method for low-pressure combustion flameout and combustion whistle of the gas water heater. Background technique [0002] At present, many areas and households have adopted natural gas as fuel, but in the winter of central heating, there will be a problem of local natural gas supply shortage, and gas water heaters will burn out and scream when the ambient air pressure is relatively low. Wait for failure. [0003] In the prior art, the main method to solve the lack of air pressure and howling of the gas water heater is to adjust the nozzle aperture of the burner, but the method of adjusting the nozzle aperture will still occur when the air pressure environment changes, and it cannot completely solve the flameout , howling faults, and after each fault is eliminated, the next time the same fault occurs when the machine is turned on, it w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20F23N1/02
CPCF23N1/025F24H9/2035
Inventor 陈茂军秦刚王雪娇
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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