TWI612256B - Detecting device of a gas stove and detecting method thereof - Google Patents

Abstract

A gas burner combustion state detecting device comprises a combustion device, a mixing tube device, a conducting portion, a fire switch and a detecting device. The mixing tube device comprises an inner ring mixing tube and an outer ring mixing tube. The conducting portion is disposed between the inner ring mixing tube and the outer ring mixing tube. The detecting device comprises a flame detector, a temperature detector and a control circuit. The flame detector is used to detect the flame of the combustion device and output a flame signal. The temperature detector is disposed on the conducting portion for detecting the temperature of the conducting portion and outputting a temperature signal. The control circuit is configured to judge according to the flame signal or/and the temperature signal, and when the combustion state of the gas furnace is abnormal, the fire switch is turned off.

Description

Gas burner combustion state detecting device and detecting method thereof

The invention relates to a detecting device, in particular to a gas burner combustion state detecting device which is arranged on a gas stove and can be used for providing a gas burner combustion state detecting function.

Gas stove is a tool for cooking food in the kitchen. Although it can heat and cook delicious food, because the gas stove is fired and cooked, if you pay attention to it, the gas stove will become the murderer of disaster. For example, the gas stove is easy to cause. The user is negligent in cleaning and maintenance, which causes tempering when the gas burner is burned, or when the flame is blown out by the wind or is quenched by the boiling broth, causing the flame to be extinguished when the gas burner is burned, or The flow is unstable and a large flame emerges rapidly, which causes a gas blockage (or fire) when the gas burner is burned.

The conventional gas furnace has been provided with a detecting device, which is provided with a thermocouple or a thermistor in the inner ring mixing tube and the outer ring mixing tube of the mixing tube device, respectively, for detecting the occurrence of tempering phenomenon, so as to be timely The cut-off gas passage can increase the safety of the gas furnace and protect the panel from cracking. However, the conventional tempering detection device must be provided with a thermocouple or a thermistor in the inner and outer ring mixing tubes to provide a tempering detection function, which increases the manufacturing cost and the thermocouple is set at The inner ring mixing tube and the outer ring mixing tube are easily damaged by high temperature and have a short service life.

In view of this, the inventor has been engaged in the development and design of related products for many years, and feels that the above-mentioned deficiencies can be improved, and he has devoted himself to research and cooperates with the application of theory. The present invention is proposed to be reasonable in design and effective in improving the above-mentioned deficiency.

The main object of the present invention is to provide a gas burner combustion state detecting device and a detecting method thereof, which can detect an abnormal high temperature generated during combustion of a gas furnace by a temperature detecting device, thereby cutting off the gas passage. The safety of the gas furnace can be increased, and the temperature detector is disposed outside the inner and outer ring mixing tubes, and is not damaged by high temperature, and the temperature of the inner and outer ring mixing tubes can also be transmitted to the temperature detector. To accurately detect the combustion state of the gas furnace.

In order to achieve the above, the present invention provides a gas burner combustion state detecting device, the gas furnace comprising a combustion device, a mixing tube device, a conducting portion, a fire switch and a detecting device, the burning device comprising an inner ring portion and An outer ring portion; the mixing tube device includes an inner ring mixing tube and an outer ring mixing tube, one end of the inner ring mixing tube is coupled to the fire switch, and the other end of the inner ring mixing tube is opposite to the inner ring portion One end of the outer ring mixing tube is coupled to the fire switch, and the other end of the outer ring mixing tube is connected to the outer ring portion; the conducting portion is disposed between the inner ring mixing tube and the outer ring mixing tube The two ends of the conductive portion are respectively defined as a first end and a second end, the first end is connected to the inner ring mixing tube, and the second end is connected to the outer ring mixing tube; the fire switch is coupled to And being controlled by the detecting device, the fire switch is used for igniting and turning on gas fuel to the mixing tube device; wherein the detecting device comprises a flame detector, a temperature detector and a control circuit, and the flame detecting And temperature detector respectively coupled In the control circuit, the flame detector is adjacent to the combustion device, the flame detector is configured to detect the flame of the combustion device and output a flame signal, and the temperature detector is disposed on the conductive portion, the temperature detection The controller is configured to detect the temperature of the conducting portion and output a temperature signal. The control circuit is configured to determine according to the flame signal or/and the temperature signal, and when the combustion state of the gas furnace is abnormal, the fire switch is turned off.

In order to achieve the above, the present invention provides a gas burner combustion state. The detecting method of the detecting device comprises the following steps: providing a gas furnace, wherein the gas furnace comprises a burning device, a mixing tube device, a conducting portion, a fire switch and a detecting device, wherein the mixing tube device comprises an inner ring mixing tube and the outer tube One end of the inner ring mixing tube and the outer ring mixing tube are respectively coupled to the fire switch, and the other ends of the inner ring mixing tube and the outer ring mixing tube are respectively connected to the combustion device, and the conducting portion is The two ends are respectively connected to the inner ring mixing tube and the outer ring mixing tube, and the detecting device comprises a flame detector, a temperature detector and a control circuit, and the flame detector and the temperature detector are respectively coupled to In the control circuit, the flame detector is adjacent to the combustion device, the temperature detector is disposed on the conductive portion; the fire switch is turned on to cause the combustion device to burn; and the flame detector is used to detect the combustion device And determining whether the combustion device has a flame; if the combustion device has a flame, use the temperature detector to detect the temperature of the conductive portion and determine whether the temperature of the conductive portion is greater than a predetermined first time Temperature; and if the temperature of the conductive portion is greater than the first predetermined temperature of the tempering, the fire switch is closed.

In summary, the gas burner combustion state detecting device of the present invention and the detecting method thereof are provided with a conducting portion between the inner ring mixing pipe and the outer ring mixing pipe of the mixing pipe device, and the temperature detecting device is disposed at On the conducting part, the temperature generated by the inner and outer ring mixing tubes can be detected simultaneously by simply passing through a temperature detector. When the mixing tube device generates tempering, the temperature can be transmitted to the temperature detector via the conducting portion, thereby accurately detecting the combustion state of the gas furnace, and when the combustion state of the gas furnace is judged to be abnormal, the fire switch is immediately turned off to cut the gas. Fuel supply. Thereby, the safety of the gas furnace can be increased, and the temperature detector is disposed outside the inner and outer ring mixing tubes, is not damaged by high temperature, has a long service life, and the temperature of the inner and outer ring mixing tubes It can also be conducted to the temperature detector via the conducting portion to accurately detect the combustion state of the gas furnace.

10‧‧‧ burning device

11‧‧‧ Inner Ring Department

12‧‧‧Outer Rings

20‧‧‧Mixed tube device

21‧‧‧ Inner ring mixing tube

211‧‧‧first intake end

212‧‧‧ Inner ring runner

22‧‧‧Outer ring mixing tube

221‧‧‧second intake end

222‧‧‧Outer ring runner

30‧‧‧Transmission Department

31‧‧‧ first end

32‧‧‧second end

33‧‧‧Installation holes

40‧‧‧Fire switch

50‧‧‧Detection device

51‧‧‧ Flame detector

52‧‧‧Temperature detector

53‧‧‧Control circuit

54‧‧‧ display

55‧‧‧ Warning device

8‧‧‧first nozzle

9‧‧‧second nozzle

81, 91‧‧‧ pipeline

S201~S209‧‧‧Steps

S301~S309‧‧‧Steps

Figure 1 is a perspective view of a gas furnace of the present invention.

Figure 2 is a partial cross-sectional view of the gas furnace of the present invention.

Figure 3 is a block diagram showing the electrical function of the gas furnace of the present invention.

4 is a flow chart (1) of the detection method of the present invention.

FIG. 5 is a flowchart (2) of the detection method of the present invention.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings .

Referring to FIG. 1 to FIG. 3, the present invention provides a gas burner combustion state detecting device, which can be a countertop furnace, an embedded furnace or other type of furnace, which is not limited in this embodiment. The gas burner includes a combustion device 10, a mixing tube device 20, a conducting portion 30, a fire switch 40, and a detecting device 50. One end of the mixing tube device 20 is coupled to the fire switch 40 and the other end is coupled to the combustion device 10. The fire switch 40 can be used to turn the gas fuel on or off so that the gas fuel can be delivered to the combustion device 10 through the mixing tube device 20. The conductive portion 30 is connected to the mixing tube device 20 such that the temperature of the mixing tube device 20 can be directly conducted to the conductive portion 30. The detecting device 50 is connected to the conducting portion 30 for detecting the combustion state of the gas furnace, thereby controlling the fire switch 40.

In detail, the mixing tube device 20 includes an inner ring mixing tube 21 and an outer ring mixing tube 22. The inner ring mixing tube 21 is a hollow tube body made of a metal material, and one end of the inner ring mixing tube 21 has a The first intake end 211 can be used to interface with a source of gas fuel. The inner ring mixing tube 21 has an inner ring flow passage 212, and the other end of the inner ring mixing tube 21 is connected to the inner ring portion 11 of the combustion device 10, so that when the fire switch 40 is opened, the gas fuel can pass through the first intake end 211. The inner ring runner 212 is delivered to the inner ring portion 11 of the combustion apparatus 10.

The inner ring mixing tube 21 and the outer ring mixing tube 22 are spaced apart, and the inner ring mixing tube 21 The outer ring mixing tubes 22 are substantially parallel to each other. The outer ring mixing tube 22 is a hollow tube body made of a metal material, and the outer ring mixing tube 22 has a second inlet end 221 at one end thereof for engaging the gas fuel source. The outer ring mixing tube 22 has an outer ring flow passage 222 inside, and the other end of the outer ring mixing tube 22 is connected to the outer ring portion 12 of the combustion device 10, so that when the fire switch 40 is opened, the gas fuel can pass through the second intake end 221 The outer ring runner 222 is delivered to the outer ring portion 12 of the combustion apparatus 10.

More specifically, the first intake end 211 of the inner ring mixing tube 21 may be provided with a first nozzle 8, the first nozzle 8 extending into the inner ring flow passage 212, and the second intake end 221 of the outer ring mixing tube 22 being settable. There is a second nozzle 9, and the second nozzle 9 projects into the outer ring flow path 222. The first nozzle 8 and the second nozzle 9 are connected to the gas fuel source through the pipelines 81, 91 and the fire switch 40, respectively, and the fire switch 40 can be used to ignite and open the gas to the inner circulation of the inner ring mixing pipe 21 of the mixing pipe device 20. The outer ring runner 222 of the duct 212 and the outer ring mixing tube 22 further combusts the inner ring portion 11 and the outer ring portion 12 of the combustion apparatus 10.

The conductive portion 30 is preferably made of a metal material (metal member). The conductive portion 30 is preferably but not limited to a solid body. The cross section of the conductive portion 30 may be square, circular or elliptical, etc. Limit it. The conducting portion 30 is disposed between the inner ring mixing tube 21 and the outer ring mixing tube 22, and the conducting portion 30 can be integrally or combinedly connected to the inner ring mixing tube 21 and the outer ring mixing tube 22, in this embodiment The conducting portion 30 is integrally formed and connected to the inner ring mixing tube 21 and the outer ring mixing tube 22. The conductive portion 30 is a block-shaped body. The two ends of the conductive portion 30 are respectively defined as a first end 31 and a second end 32. The first end 31 is integrally formed and connected to the inner ring mixing tube 21, and the second end 32 is integrated. The molding is connected to the outer ring mixing tube 22 such that the temperatures of the inner ring mixing tube 21 and the outer ring mixing tube 22 are both conducted to the conducting portion 30. If the conductive portion 30 is coupled between the inner ring mixing tube 21 and the outer ring mixing tube 22, the first end 31 can be welded to the inner ring mixing tube 21, and the second end 32 can be welded to the outer ring mixing tube 22. .

The detecting device 50 includes a flame detector 51, a temperature detector 52, and a control circuit 53, and the flame detector 51 and the temperature detector 52 are respectively coupled to the control circuit 53. In addition, the fire switch 40 is also coupled to and controlled by the control circuit 53, so that the fire switch 40 can be manually turned on and off, or can be controlled to be turned on and off by the control circuit 53, and the fire switch 40 can include a switch knob, Electronic igniter, gas valve, etc.

The flame detector 51 is adjacent to the combustion device 10 for detecting the flame of the combustion device 10 and outputting a flame signal to the control circuit 53 according to the detection result. The flame detector 51 can be, for example, a flame sensing needle that can generate different electrical signals depending on the magnitude of the induced flame and the presence or absence of flame. The control circuit 53 is configured to judge based on the flame signal output from the flame detector 51, and when the combustion state of the gas burner is abnormal, the fire switch 40 is turned off. The control circuit 53 is configured to perform the determination according to the flame signal outputted by the flame detector 51. The control circuit 53 is configured to determine whether the combustion device 10 has a flame according to the flame signal to determine whether the combustion state of the gas furnace is abnormal. If there is a flame, the control circuit 53 maintains the opening of the fire switch 40. If there is no flame, for example, when the flame is blown out by the wind during the combustion or is quenched by the soup, the combustion state of the gas burner is abnormal, and the control circuit 53 is turned off accordingly. The fire switch 40 is used to cut off the gas fuel supply to avoid gas leakage during the abnormal combustion state of the gas furnace (when the flame is extinguished), thereby causing gas leakage.

The temperature detector 52 is disposed on the conductive portion 30, that is, the mounting portion 33 may be provided on the conductive portion 30 such that the temperature detector 52 is mounted to the mounting hole 33 of the conductive portion 30. The temperature detector 52 is preferably adjacent to the first end 31 of the conducting portion 30, that is, the distance between the temperature detector 52 and the first end 31 is smaller than the distance between the temperature detector 52 and the second end 32, so that the temperature The detector 52 is closer to the inner ring mixing tube 21 and away from the outer ring mixing tube 22. When the combustion state of the gas furnace is abnormal, for example, the high temperature generated when the inner ring mixing tube 21 is tempered can be quickly conducted to the temperature sensor 52. . When the inner ring mixing tube 21 is tempered, the temperature is usually low, so the temperature detection of this embodiment Preferably, the heater 52 is adjacent to the first end 31 of the conducting portion 30 and the inner ring mixing tube 21, so that the heat of the inner ring mixing tube 21 and the outer ring mixing tube 22 can be evenly conducted to the temperature detector 52 for control. The circuit 53 can judge based on the temperature signal output from the temperature detector 52, and when the combustion state of the gas burner is abnormal, the fire switch 40 is turned off.

The control circuit 53 is configured to perform the determination according to the temperature signal output by the temperature detector 52. The control circuit 53 is configured to determine, according to the temperature signal, whether the temperature of the conduction portion 30 is greater than a predetermined first tempering temperature ( Such as: 100 degrees) to determine whether the gas burner combustion state is abnormal. If the temperature of the conducting portion 30 is greater than the preset first tempering temperature, that is, the tempering of the inner ring mixing tube 11 during the combustion of the gas burner causes the temperature of the conducting portion 30 to exceed 100 degrees, and the combustion state of the gas burner is abnormal. The control circuit 53 accordingly turns off the fire switch 40 to cut off the gas fuel supply to avoid the situation that the gas is continuously delivered when the combustion state of the gas furnace is abnormal (when tempering), and the tempering overheating occurs again.

The control circuit 53 is configured to determine whether the temperature of the conductive portion 30 is greater than a predetermined first tempering temperature according to the temperature signal. For example, 100 degrees), if it is not greater than the preset first tempering temperature, it is determined whether the temperature of the conducting portion 30 is greater than a predetermined second tempering temperature (eg, 60 degrees) and the conducting portion 30 is Whether the rising temperature (or the amount of change in temperature) per unit time is greater than the rising temperature (for example, 5 degrees) within a predetermined unit time (for example, 1 minute) determines whether the combustion state of the gas furnace is abnormal. If the temperature of the conducting portion 30 exceeds 60 degrees and the rising temperature of the conducting portion 30 exceeds 5 degrees in one minute, the tempering occurs during the combustion of the gas burner, the combustion state of the gas burner is abnormal, and the control circuit 53 is turned off accordingly. The fire switch 40 is used to cut off the gas fuel supply to prevent the gas from being continuously delivered when the combustion state of the gas furnace is abnormal (when tempering), and the tempering overheating condition occurs again.

In addition, the control circuit 53 is configured to perform the determination according to the temperature signal output by the temperature detector 52, as follows: the control circuit 53 is configured to determine the conduction according to the temperature signal. Whether the temperature of the portion 30 is greater than a predetermined blocking temperature (eg, 80 degrees) determines whether the combustion state of the gas furnace is abnormal. If the temperature of the conducting portion 30 is greater than the preset blocking temperature, that is, the unstable gas flow rate causes the gas furnace to rapidly emerge a large flame, so that the temperature of the conducting portion 30 exceeds 80 degrees, and the gas burner is burned. For the abnormality, the control circuit 53 closes the fire switch 40 accordingly to cut off the gas supply, so as to prevent the gas from continuing to be transported when the combustion state of the gas burner is abnormal (at the time of blocking), and a gas explosion occurs.

Accordingly, the control circuit 53 can be used to judge based on the flame signal output from the flame detector 51 or/and the temperature signal output from the temperature detector 52, and when it is determined that the combustion state of the gas furnace is abnormal (extinguishing, tempering or blocking fire) When the fire switch 40 is turned off to maintain personnel safety.

In addition, the detecting device 50 further includes a display 54 coupled to the control circuit 53 for displaying a fault information, and the fault information may be, for example, a fault code. The control circuit 53 is further configured to drive the display 54 to display the fault information to provide a display function when determining that the combustion state of the gas burner is abnormal. Moreover, the detecting device 50 can further include a warning device 55 coupled to the control circuit 53 for issuing an alert message. The warning device 55 may be, for example, a light-emitting element such as a warning light or a sounding element such as a buzzer to emit a warning message of light or sound. The control circuit 53 is further configured to drive the warning device 55 to issue the warning message to provide an alert function when determining that the combustion state of the gas furnace is abnormal.

Please refer to FIG. 4, and please refer to FIG. 1 to FIG. 3 as a reference. The method for detecting the gas burner combustion state detecting device of the present invention will be described in detail below, and the steps may be as follows:

First, in step S201, a gas furnace is provided, which includes a combustion device 10, a mixing tube device 20, a conducting portion 30, a fire switch 40, and a detecting device 50. The mixing tube device 20 includes an inner ring mixing tube and an outer ring mixing tube. One end of the inner ring mixing tube and the outer ring mixing tube are respectively coupled to the fire switch, and the other end is respectively connected to the combustion device. Both ends of the conducting portion 30 are connected to the inner ring mixing pipe and the outer ring mixing pipe, respectively. Detection device 50 The flame detector 51, the temperature detector 52 and the control circuit 53 are included. The flame detector 51 and the temperature detector 52 are respectively coupled to the control circuit 53, and the flame detector 51 is adjacent to the combustion device 10, and the temperature is detected. The device 52 is disposed on the conductive portion 30.

Then, in step S203, the fire switch 40 is turned on to cause the combustion device 10 to burn.

Then, in step S205, the combustion detector 10 is detected using the flame detector 51 and it is determined whether or not the combustion apparatus 10 has a flame. Further, the control circuit 53 can drive the flame detector 51 to detect the combustion device 10, thereby determining whether the combustion device 10 has a flame. If the control circuit 53 determines that the combustion device 10 has no flame based on the electric signal generated by the flame detector 51, step S206 is performed. On the other hand, if the control circuit 53 determines that the combustion apparatus 10 has a flame based on the electric signal generated by the flame detector 51, step S207 is performed.

In step S206, the fire switch 40 is turned off to stop supplying the gas fuel.

In step S207, the temperature detector 52 is used to detect the temperature of the conductive portion 30 and determine whether the temperature of the conductive portion 30 is greater than a predetermined first tempering temperature. Further, the control circuit 53 can drive the temperature detector 52 to detect the temperature of the conducting portion 30, thereby determining whether the temperature of the conducting portion 30 is greater than the preset first tempering temperature. If the control circuit 53 determines that the temperature of the conductive portion 30 is not greater than the preset first tempering temperature based on the electrical signal generated by the temperature detector 52, step S208 is performed. On the other hand, if the control circuit 53 determines that the temperature of the conductive portion 30 is greater than the preset first tempering temperature based on the electrical signal generated by the temperature detector 52, step S209 is performed.

In step S208, it is determined whether the temperature of the conducting portion 30 is greater than a predetermined second tempering temperature and whether the rising temperature of the conducting portion 30 in a unit time is greater than a rising temperature of a predetermined unit time. Further, the control circuit 53 can drive the temperature detector 52 to detect the temperature of the conducting portion 30, thereby determining whether the temperature of the conducting portion 30 is greater than the preset second tempering temperature and the conducting portion 30 is within a unit time. rise Whether the temperature is greater than the rising temperature of the preset unit time. If the control circuit 53 determines, according to the electrical signal generated by the temperature detector 52, that the temperature of the conducting portion 30 is not greater than the preset second tempering temperature and the rising temperature of the conducting portion 30 in the unit time is not greater than the preset unit. When the temperature rises in time, the process returns to step S205. On the contrary, if the control circuit 53 determines, according to the electrical signal generated by the temperature detector 52, the temperature of the conducting portion 30 is greater than the preset second tempering temperature and the rising temperature of the conducting portion 30 in the unit time is greater than the preset unit. When the temperature rises in time, step S209 is performed.

In step S209, the fire switch 40 is turned off to stop supplying the gas fuel. Further, the detecting device 50 further includes a display 54 coupled to the control circuit 53. The control circuit 53 can turn off the fire switch 40 and drive the display 54 to display a fault message to prompt the user.

Please refer to FIG. 5, and please refer to FIG. 1 to FIG. 3, and the method for detecting the gas burner combustion state detecting device of the present invention will be described in detail below. The steps may be as follows: First, in step S301, a gas furnace is provided. It includes a combustion device 10, a mixing tube device 20, a conducting portion 30, a fire switch 40, and a detecting device 50. The mixing tube device 20 includes an inner ring mixing tube and an outer ring mixing tube. One end of the inner ring mixing tube and the outer ring mixing tube are respectively coupled to the fire switch, and the other end is respectively connected to the combustion device. Both ends of the conducting portion 30 are connected to the inner ring mixing pipe and the outer ring mixing pipe, respectively. The detecting device 50 includes a flame detector 51, a temperature detector 52 and a control circuit 53. The flame detector 51 and the temperature detector 52 are respectively coupled to the control circuit 53, and the flame detector 51 is adjacent to the combustion device 10. The temperature detector 52 is disposed on the conductive portion 30.

Then, in step S303, the fire switch 40 is turned on to cause the combustion device 10 to burn.

Then, in step S305, the combustion device 10 is detected using the flame detector 51 and it is determined whether or not the combustion device 10 has a flame. Further, the control circuit 53 can drive the flame detector 51 to detect the combustion device 10, thereby determining whether the combustion device 10 has flame. If the control circuit 53 determines that the combustion apparatus 10 has no flame based on the electric signal generated by the flame detector 51, step S306 is performed. On the other hand, if the control circuit 53 determines that the combustion apparatus 10 has a flame based on the electric signal generated by the flame detector 51, step S307 is performed.

In step S306, the fire switch 40 is turned off to stop supplying the gas fuel.

In step S307, the temperature detector 52 is used to detect the temperature of the conducting portion 30 and determine whether the temperature of the conducting portion 30 is greater than a predetermined blocking temperature. Further, the control circuit 53 can drive the temperature detector 52 to detect the temperature of the conductive portion 30, thereby determining whether the temperature of the conductive portion 30 is greater than the predetermined blocking temperature. If the control circuit 53 determines that the temperature of the conductive portion 30 is not greater than the predetermined blocking temperature based on the electrical signal generated by the temperature detector 52, then the process returns to step S305. On the other hand, if the control circuit 53 determines that the temperature of the conductive portion 30 is greater than the predetermined blocking temperature based on the electrical signal generated by the temperature detector 52, step S309 is performed.

In step S309, the fire switch 40 is turned off to stop supplying the gas fuel. Further, the detecting device 50 further includes a display 54 coupled to the control circuit 53. The control circuit 53 can turn off the fire switch 40 and drive the display 54 to display a fault message to prompt the user.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, the equivalent changes of the present invention and the contents of the drawings are all included in the protection of the present invention. Within the scope, it is combined with Chen Ming.

10‧‧‧ burning device

11‧‧‧ Inner Ring Department

12‧‧‧Outer Rings

20‧‧‧Mixed tube device

21‧‧‧ Inner ring mixing tube

211‧‧‧first intake end

22‧‧‧Outer ring mixing tube

221‧‧‧second intake end

30‧‧‧Transmission Department

31‧‧‧ first end

32‧‧‧second end

40‧‧‧Fire switch

50‧‧‧Detection device

51‧‧‧ Flame detector

52‧‧‧Temperature detector

8‧‧‧first nozzle

9‧‧‧second nozzle

81, 91‧‧‧ pipeline

Claims (6)

A gas burner combustion state detecting device, comprising: a combustion device, a mixing pipe device, a conducting portion, a fire switch and a detecting device, the burning device comprising an inner ring portion and an outer ring portion; the mixing tube device comprises a An inner ring mixing tube and an outer ring mixing tube, one end of the inner ring mixing tube is coupled to the fire switch, and the other end of the inner ring mixing tube is connected to the inner ring portion, and one end of the outer ring mixing tube is coupled In the fire switch, the other end of the outer ring mixing tube is connected to the outer ring portion; the conducting portion is disposed between the inner ring mixing tube and the outer ring mixing tube, and two ends of the conducting portion are respectively defined as one a first end and a second end, the first end is connected to the inner ring mixing tube, and the second end is connected to the outer ring mixing tube; the fire switch is coupled to and controlled by the detecting device, the fire power The switch is used for igniting and opening the gas fuel to the mixing tube device; wherein the detecting device comprises a flame detector, a temperature detector and a control circuit, wherein the flame detector and the temperature detector are respectively coupled to the Control circuit, the flame detector is adjacent to a combustion device for detecting the flame of the combustion device and outputting a flame signal, the temperature detector being disposed on the conducting portion, the temperature detector for detecting the temperature of the conducting portion and outputting a a temperature signal; wherein the control circuit is configured to determine, according to the temperature signal, whether the temperature of the conducting portion is greater than a predetermined first tempering temperature, and if not greater than the preset first tempering temperature, determining the conducting portion Whether the temperature is greater than a predetermined second tempering temperature and whether the rising temperature of the conducting portion in a unit time is greater than a predetermined rising temperature per unit time to determine whether the combustion state of the gas furnace is abnormal, and when judging When the combustion state of the gas furnace is abnormal, the fire switch is turned off. The gas burner combustion state detecting device of claim 1, wherein the control circuit is further configured to determine whether the combustion device has a flame according to the flame signal to determine whether the gas burner is in an abnormal state, and when determining the gas furnace When the combustion state is abnormal, turn off the fire switch. The gas burner combustion state detecting device of claim 1, wherein the control circuit is further configured to determine whether the temperature of the conducting portion is greater than a predetermined blocking temperature according to the temperature signal to determine whether the gas burner is in a combustion state. Abnormal, and when it is judged that the combustion state of the gas furnace is abnormal, the fire switch is turned off. The gas burner combustion state detecting device of claim 1, wherein the detecting device further comprises a display coupled to the control circuit for displaying a fault information. The gas burner combustion state detecting device of claim 1, wherein the detecting device further comprises an alerting device coupled to the control circuit, the alerting device for issuing an alert message. A method for detecting a gas burner combustion state detecting device comprises the steps of: providing a gas furnace, wherein the gas furnace comprises a combustion device, a mixing tube device, a conducting portion, a fire switch and a detecting device, wherein the mixing tube device comprises The inner ring mixing tube and the outer ring mixing tube are respectively coupled to the fire switch, and the inner ring mixing tube and the outer ring mixing tube are respectively connected to the combustion device The two ends of the conducting portion are respectively connected to the inner ring mixing tube and the outer ring mixing tube, and the detecting device comprises a flame detector, a temperature detecting device and a control circuit, the flame detecting device and the temperature detecting The flame detector is respectively coupled to the control circuit, the flame detector is adjacent to the combustion device, the temperature detector is disposed on the conductive portion; the fire switch is turned on to cause the combustion device to burn; and the flame detector is used; Detecting the combustion device and determining whether the combustion device has a flame; if the combustion device has a flame, using the temperature detector to detect the temperature of the conduction portion and determine whether the temperature of the conduction portion is a predetermined first tempering temperature; and if the temperature of the conducting portion is not greater than the predetermined first tempering temperature, determining whether the temperature of the conducting portion is greater than a predetermined second tempering temperature and the Whether the rising temperature of the conducting portion in one unit time is greater than a rising temperature in a predetermined unit time; if the temperature of the conducting portion is greater than the preset number When the temperature of the tempering and the rising temperature of the conducting portion in the unit time are greater than the rising temperature of the predetermined unit time, the fire switch is turned off.