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Buck principle based ignition and flame-detection circuit and fuel gas wall-hanging stove

A fire detection and circuit technology, which is applied in lighting and heating equipment, fluid heaters, etc., can solve the problem that the inductance and load cannot be charged at the same time, and achieve the effects of eliminating inductance howling, saving costs, and improving safety

Active Publication Date: 2019-04-26
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a gas wall-hung boiler with a pulse ignition circuit based on the Buck principle to solve the defect that the boost circuit in the prior art cannot charge the inductance and the load at the same time

Method used

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  • Buck principle based ignition and flame-detection circuit and fuel gas wall-hanging stove
  • Buck principle based ignition and flame-detection circuit and fuel gas wall-hanging stove

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] The invention discloses an ignition detection circuit based on the Buck principle, see figure 2 , which includes a controller and an ignition module, the ignition module includes a step-down and detection unit, the step-down and detection unit is connected to an external DC power supply, and is used for performing amplitude conversion on the input DC power and feeding back the detected voltage to the controller.

[0022] The step-down and detection unit includes a step-down branch and a detection branch connected in series inside the step-down branch. The detection branch includes the t...

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Abstract

The invention discloses a buck principle based ignition and flame-detection circuit and a fuel gas wall-hanging stove adopting the circuit. The buck principle based ignition and flame-detection circuit comprises a controller and an ignition module, wherein the ignition module comprises a voltage-reducing and detecting unit which is connected to an external direct-current power supply. Buck circuitinductance and load are charged together, and power of a bucket circuit is greater than boost, and therefore, inductance and a rectified circuit size are smaller than boost, and the cost can be saved; a high-frequency transformer sampling circuit is used to replace the original resistance type sampling circuit, so that safety is higher; a high-frequency transformer is adopted to replace inductance in an existing circuit, so that the inductance howling problem is eliminated; and feedback voltage of the transformer is adopted to effectively isolate high voltage of an ignition power supply froma controller chip, so that safety of the circuit is improved.

Description

technical field [0001] The invention relates to the technical field of gas ignition circuits, in particular to an ignition and detection circuit based on the Buck principle and a gas wall-hung boiler using the circuit. Background technique [0002] Gas equipment such as gas water heaters, gas hot air stoves, gas boilers, gas wall-hung boilers, etc., the circuits of these products include ignition and flame detection circuits. In the traditional pulse ignition circuit, the boost circuit generally adopts a boost circuit when boosting the voltage. In terms of circuit structure: the boost circuit charges the inductance separately first, and then charges the load, instead of charging the inductance and the load at the same time; and The boost circuit and the sampling circuit cannot work at the same time, but separately. [0003] Therefore, it is an urgent technical problem to be solved in the industry to design an ignition and detection circuit that can charge the inductor and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H9/20
CPCF24H9/2035F24H9/2085
Inventor 刘玉婷金胜昔汪春节张秋俊曾森方召军胡逢亮
Owner GREE ELECTRIC APPLIANCES INC
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