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Gas water heater and its safety control system and method

A gas water heater and safety control technology, which is applied in the combustion method, control combustion, fluid heater and other directions, can solve the problems of high installation cost, stop operation of the gas water heater, and users cannot use it normally, achieve fast response speed, and ensure safety and reliability. The effect of running and accurate air volume

Active Publication Date: 2020-04-28
WUHU MIDEA KITCHEN & BATH APPLIANCES MFG CO LTD
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the wind pressure detection unit can avoid the combustion operation of the gas water heater under the condition of wind pressure backflow, the cost of the device is relatively high, and it is easy to cause the gas water heater to stop running due to slight wind pressure, resulting in users being unable to use it normally

Method used

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  • Gas water heater and its safety control system and method
  • Gas water heater and its safety control system and method
  • Gas water heater and its safety control system and method

Examples

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Embodiment Construction

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0033] The following describes the gas water heater and its safety control system and method according to the embodiments of the present invention with reference to the accompanying drawings.

[0034] figure 1 It is a block diagram of a safety control system for a gas water heater according to an embodiment of the present invention. Such as figure 1 As shown, the safety control system of the gas water heater includes: an exhaust fan 10 , a rotational speed detection unit 20 , a power acquisition unit 30 , a rotational speed dif...

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Abstract

The invention discloses a gas water heater and its safety control system and method, wherein the system includes: an exhaust fan; a rotational speed detection unit for detecting the rotational speed of the exhaust fan; a power acquisition unit for obtaining a given output power of the exhaust fan; value; the speed difference acquisition unit is used to obtain the actual speed value and the speed reference value of the exhaust fan according to the output power given value, and calculate the difference between the actual speed value and the speed reference value; the exhaust air control unit is connected with the exhaust fan respectively The fan, the rotation speed detection unit, the rotation speed difference acquisition unit and the power acquisition unit are connected to correct the rotation speed of the exhaust fan according to the difference, and judge the air outlet wind speed of the exhaust fan according to the corrected rotation speed of the exhaust fan and the output power given value. According to the air pressure of the air outlet of the exhaust fan, the output power given value of the exhaust fan is adjusted. The system can ensure that the gas water heater has good combustion conditions, ensures the safe and reliable operation of the gas water heater, and improves the control precision.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a gas water heater and its safety control system and method. Background technique [0002] At present, the common gas water heaters on the market include: D type (natural exhaust), Q type (forced exhaust), P type (natural supply and exhaust), G type (forced supply and exhaust) and W type (outdoor setup), etc. Among them, the Q-type and G-type gas water heaters are directly equipped with an exhaust fan to forcefully discharge the waste gas during combustion to prevent the residual gas from burning and exploding. [0003] In related technologies, Q-type gas water heaters usually use a wind pressure detection unit to detect the wind pressure at the outlet, and then control the exhaust fan and ignition unit according to the detected wind pressure to ensure that the gas water heater can work normally. Although adopting the wind pressure detection unit can avoid the combustion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20
CPCF24H9/2035F24H15/31F24H15/242F24H15/35F24H15/215F24H15/174F24H15/219F24H15/20F23N3/082
Inventor 薛承志梁国荣代先锋梁泽锋
Owner WUHU MIDEA KITCHEN & BATH APPLIANCES MFG CO LTD
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