JP3041967U - Flame detection system - Google Patents

Abstract

(57) [Abstract] [Objective] The present invention relates to a flame detection system such as an oil fan heater. [Composition] A power generation element (for example, FeSi ₂ ) is used as the flame detection sensor (1), and the flame detection sensor (1) is provided at a certain distance above the burner (2) (where flame is generated). . Then, the output from the flame detection sensor (1) is input to the determination circuit (3) for determining the presence or absence of flame.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 This invention relates to a flame detection system such as an oil fan heater.

[0002]

[Prior art]

 Conventionally, the detection of flames in oil fan heaters, etc. has been performed by detecting the presence / absence of flames by the electrical resistance between the upper and lower sides of the flame, the so-called burner, and the inside of the flame. However, if an insulator such as silicon oxide adheres to the surface of the sensor or burner due to combustion, the electrical resistance between the two points will increase and the sensitivity will decrease, resulting in a flame even during normal combustion. It was not appropriate because it was judged to be no, and a malfunction such as stopping the combustion occurred.

[0003]

[Problems to be solved by the device]

 This proposal aims to develop a system that can detect the presence or absence of flames reliably and make accurate judgments without being affected by the surrounding environment.

[0004]

[Means for Solving the Problems]

 The solution means will be described with reference to the drawings. (A) The flame detection sensor (1) is fixed to the upper part of the burner (2) at a certain distance. (B) The power generation element that is the flame detection sensor (1). Generates electromotive force due to the heat of the flame (4). The electromotive force generated from the flame detection sensor (1) is sent to the determination circuit (3), and the determination circuit (3) determines the presence or absence of flame based on the electromotive force value.

[0005]

[Action and Embodiment]

 Since this plan has the structure as described above, when using it, a flame (4) appears at the top of the burner (2) at the same time as the combustion, and an electromotive force is generated in the flame detection sensor (1) which is a power generation element due to heat. This electromotive force is input to the determination circuit (3) and the flame (4) is determined to be present. When the combustion is not in progress, of course, there is no flame (4), so no electromotive force is generated in the flame detection sensor (1), which is the power generation element above the burner (2), and therefore the judgment circuit (3) There is no input to) and it is judged that there is no flame.

[0006]

[Effect of the invention]

 Therefore, it is possible to reliably and accurately determine the presence or absence of a flame during combustion regardless of the surrounding environment, and to keep the operation of the equipment stable and prevent malfunctions.

[Brief description of the drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a side view of the present invention.

FIG. 3 is a top view of the present invention.

[Explanation of symbols]

1 is a flame detection sensor 2 is a burner 3 is a determination circuit 4 is a flame

Claims (1)

[Utility model registration claims] 1. A power generation element (for example, FeSi ₂ ) is used as a flame detection sensor. (B) A flame detection sensor is provided at a fixed distance above the burner (where flame is generated). (C) The output from the flame detection sensor is input to the determination circuit for determining the presence or absence of flame. The flame detection system configured as described above.