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Protection device for flue blockage of gas water heater and detecting method

A technology for gas water heaters and detection methods, which is applied to water heaters, fluid heaters, lighting and heating equipment, etc. It can solve the problems of untimely information feedback, low cost of air pressure switches, and gas water heaters that cannot work normally, so as to save energy The effect of manufacturing cost, simple and reliable judgment, improvement of work stability and safety of use

Pending Publication Date: 2019-02-22
VATTI CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing forced-exhaust gas water heaters with AC fans generally use the connection between the fan and the air pressure switch for protection. The air pressure switch judges the blockage of the flue and shuts down the gas water heater by collecting the air pressure signal of the fan. However, the design stability of the air pressure switch itself is poor. , often the information feedback is not timely or the information feedback is wrong, resulting in the gas water heater not working normally, and even causing disasters, and the cost of the air pressure switch itself is not low

Method used

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  • Protection device for flue blockage of gas water heater and detecting method
  • Protection device for flue blockage of gas water heater and detecting method
  • Protection device for flue blockage of gas water heater and detecting method

Examples

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Embodiment 1

[0048] Such as figure 1 As shown, a flue blockage protection device for a gas water heater in this embodiment includes a fan 1, a controller 2, a first voltage detection feedback unit 3, a second voltage detection feedback unit 4 and a gas valve 5, wherein the fan 1 They are respectively electrically connected to the first voltage detection feedback unit 3, the second voltage detection feedback unit 4 and the controller 2, and the first voltage detection feedback unit 3, the second voltage detection feedback unit 4 and the gas valve 5 are respectively electrically connected to the controller 2 .

[0049] Such as figure 2 As shown, the fan 1 includes a driving motor 11 and a driving capacitor 12 , and both ends of the driving capacitor 12 are electrically connected to the driving motor 11 . Further, the first voltage detection feedback unit 3 is electrically connected to both ends of the drive motor 11 for detecting the voltage U across the drive motor 11 i , and will drive...

Embodiment 2

[0054] Such as Figure 5-6 As shown, a detection method of the gas water heater flue blockage protection device described in the application embodiment 1 of the present invention comprises the following steps:

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Abstract

The invention discloses a protection device for flue blockage of a gas water heater. The protection device comprises a fan, a controller, a first voltage detection and feedback unit and a second voltage detection and feedback unit; the fan, the first voltage detection and feedback unit and the second voltage detection and feedback unit are electrically connected with the controller separately; thefan comprises a driving motor and a driving capacitor; and the voltage UC of the driving capacitor is increased with linear increase of the voltage Ui of the driving motor. Meanwhile, the invention further discloses a detecting method using the protection device for flue blockage of the gas water heater. The protection device and the detecting method at least have the advantages as follows: 1, judgment of flue blockage is easier and more reliable, wind pressure switches are not required, and thus the manufacturing cost is saved; 2, voltage change of the driving capacitor is acquired to judgethe blockage state of a flue, and the gas water heater is not started or is shut off timely when the flue is blocked to a certain extent, so that the working stability and the use safety of the gas water heater are improved.

Description

technical field [0001] The invention relates to the technical field of gas water heaters, in particular to a gas water heater flue blockage protection device and detection method. Background technique [0002] According to the requirements of the national standard GB-6932 "Household Gas Instant Water Heater", the forced exhaust gas water heater should be equipped with a safety device for excessive wind pressure and a safety device for flue blockage, so that the water heater will be flamed out, backfired, and affect the use of the flame. Shut off the gas path to the burner prior to spillage and unusable flame out. [0003] Existing forced-exhaust gas water heaters with AC fans generally use the connection between the fan and the air pressure switch for protection. The air pressure switch judges the blockage of the flue and shuts down the gas water heater by collecting the air pressure signal of the fan. However, the design stability of the air pressure switch itself is poor. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H1/10F24H9/20
CPCF24H1/107F24H9/2035
Inventor 侯秋庆高宁麦伟添潘叶江
Owner VATTI CORP LTD
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