Gas water heater, and safety control system and method thereof

A technology for gas water heaters and safety control, which is applied to fluid heaters, lighting and heating equipment, etc., which can solve problems such as users' inability to use normally, high device costs, and gas water heaters shutting down, so as to ensure safe and reliable operation and fast response , the effect of accurate air volume

Active Publication Date: 2016-12-14
WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
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  • Abstract
  • 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 d

Method used

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  • Gas water heater, and safety control system and method thereof
  • Gas water heater, and safety control system and method thereof
  • Gas water heater, and safety control system and method thereof

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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 a safety control system and a method thereof. The system comprises an exhaust fan, a rotary speed detection unit, a power acquisition unit, a rotary speed difference value acquisition unit and an exhaust control unit. The rotary speed detection unit is used for detecting the rotary speed of the exhaust fan; the power acquisition unit is used for acquiring an output power set value of the exhaust fan; the rotary speed difference value acquisition unit is used for acquiring a rotary speed actual value and a rotary speed reference value of the exhaust fan according to the output power set value, and calculating a difference value between the rotary speed actual value and the rotary speed reference value of the exhaust fan; and the exhaust control unit is connected with the exhaust fan, the rotary speed detection unit, the rotary speed difference value acquisition unit and the power acquisition unit, and is used for correcting a preset outlet air pressure curve of the exhaust fan according to the difference value, judging the air pressure situation of an air outlet of the exhaust fan according to the rotary speed, the corrected outlet air pressure curve and the output power set value of the exhaust fan, and adjusting the output power set value of the exhaust fan according to the air pressure situation of the air outlet of the exhaust fan. The system can ensure the gas water heater to have a favorable combustion condition and operate safely and reliably, and is high in control accuracy.

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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IPC IPC(8): F24H9/20
CPCF24H9/2035
Inventor 薛承志代先锋寿利萍梁泽锋梁国荣
Owner WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
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