TW201516343A - Gas stove with flame detection - Google Patents

Abstract

A gas stove with flame detection, comprising: a switch module, a flame detection module and a processing module. The switch module generates an ignition signal when a flame of stove is lighted. The flame detection module generates an first light signal when the flame detection module detects the light of 400nm to 500nm wavelength, and the flame detection module generates an second light signal when the flame detection module detects the light of 600nm to 780nm wavelength. The processing module start a air draft device and alarm device when the processing module receive the first light signal and the second light signal in the same time or receive the second light signal only.

Description

Gas stove with flame detection

The invention relates to a gas furnace, in particular to a gas furnace with flame detection capable of detecting the flame state of a gas furnace.

According to the most common accidents in the gas furnace, carbon monoxide poisoning and gas explosion outside the gas; carbon monoxide poisoning refers to the incomplete combustion of oxygen due to insufficient oxygen in a non-ventilated environment, which in turn produces toxic gas carbon monoxide, people are unaware of In the case of carbon monoxide inhalation accidents in the body; and the cause of gas explosion may be that the gas fire has been extinguished, but the user has not noticed and did not shut down the gas, thus causing gas leakage, and thus gas explosion may occur.

Generally speaking, in order to prevent users from carbon monoxide poisoning or gas explosion, the commonly used means is to use a carbon monoxide concentration detector or a gas concentration detector to detect the concentration of carbon monoxide or gas around the gas furnace when the concentration exceeds At a preset concentration, an alarm is issued or the gas supply valve is closed. However, in practical applications, in order to avoid false positives of the detector, it is often necessary to wait until the house accumulates a certain amount of gas or carbon monoxide in the house, and the detector will only issue an alarm; in addition, most of the detectors currently only operate the gas furnace. The gas supply switch is used to turn off the gas at the same time as the alarm is issued; in other words, the above-mentioned conventional technology, when the detector issues a warning, the room is still filled with gas or carbon monoxide, and cannot effectively solve or prevent gas explosion or The problem of carbon monoxide poisoning. Accordingly, the inventors have diligently studied and cooperated with the application of the theory, and proposed a present invention which is rational in design and effective in improving the above problems.

The invention mainly solves the problem that the conventional gas furnace utilizes carbon monoxide concentration or gas concentration Detection is not effective in flooding the house with gas or carbon monoxide.

In order to achieve the above object, the present invention provides a gas furnace with flame detection, comprising: a switch module, a flame detecting module and a processing module. The switch module is used to ignite a gas furnace flame and accordingly generate an ignition signal. The flame detection module is configured to detect the combustion state of the gas burner flame, and the flame detection module comprises a visible light detecting unit that detects the radiation light wave of a wavelength of 450 nm to 500 nm, and generates a first light wave signal according to the The visible light detecting unit detects a radiated light wave of a wavelength of 600 nm to 780 nm, and generates a second light wave signal accordingly. The processing module is electrically connected to the switch module and the flame detecting module. When the processing module receives the lighting signal, the processing module controls the flame detecting module to detect the gas in the gas furnace, and if the processing module receives the same When the first light wave signal and the second light wave signal only receive the second light wave signal, the processing module controls to activate a ventilation device and a warning device.

The invention has the beneficial effects of detecting the combustion condition of the gas furnace flame to instantly determine whether the flame is incompletely burned or extinguished, and then automatically starting the air extracting device to extract carbon monoxide or gas into the outdoor, and At the same time, the warning device is activated to remind the user, so as to avoid related disasters such as carbon monoxide poisoning or gas explosion.

Preferably, when the processing module controls the flame detecting module to detect the gas in the gas furnace, if the processing module receives the first light wave signal and the second light wave signal simultaneously, only receives the second light wave signal or does not receive the first When the light wave signal and the second light wave signal are used, the processing module closes a gas supply valve to prevent the gas from continuously leaking, or adjusts a gas furnace damper to complete the combustion of the flame.

Preferably, when the processing module controls the flame detecting module to detect the gas in the gas furnace, if the processing module does not receive the first light wave signal and the second light wave signal, the processing module controls the start of the air extracting device and the warning device, thereby Instantly pump carbon monoxide or gas to the outside and instantly alert the user.

Preferably, the flame detecting module comprises at least one infrared detecting unit or at least one The ultraviolet detecting unit detects the radiation wave of the wavelength of 2500 nm to 3000 nm and generates a third light wave signal; the ultraviolet detecting unit detects the radiation light wave of the wavelength of 185 nm to 260 nm, and generates a fourth light wave signal. When the processing module receives the ignition signal, and controls the flame detection module to perform flame detection without receiving the first light wave signal, the second light wave signal or the third light wave signal; or the first light wave signal and the second light wave are not received When the signal or the fourth light wave signal is used, the processing module activates the air extracting device and the warning device, and can simultaneously close a gas supply valve to instantly determine whether the flame is extinguished. If the flame is extinguished, the carbon monoxide or gas is immediately extracted to the outside. And promptly remind the user.

Preferably, the warning device comprises at least one speaker unit and at least one lighting unit for alerting the user through the sound and light effect.

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

1‧‧‧Gas furnace with flame detection

10‧‧‧Switch Module

101‧‧‧Ignition signal

20‧‧‧ Flame Detection Module

21‧‧‧ Visible light detection unit

211‧‧‧First lightwave signal

212‧‧‧Second lightwave signal

22‧‧‧Infrared detection unit

221‧‧‧ Third lightwave signal

23‧‧‧UV detection unit

231‧‧‧fourth lightwave signal

30‧‧‧Processing module

40‧‧‧Exhaust device

50‧‧‧Warning device

60‧‧‧ gas supply valve

1 is a block diagram of a first embodiment of a gas furnace with flame detection of the present invention.

2 is a schematic view of a gas furnace with flame detection of the present invention.

3 is a block diagram of a second embodiment of a gas furnace with flame detection of the present invention.

4 is a block diagram showing a third embodiment of a gas furnace with flame detection according to the present invention.

[First Embodiment]

Please refer to FIG. 1 and FIG. 2, which are schematic views of a first embodiment of a gas furnace with flame detection according to the present invention. As shown in the figure, the gas furnace 1 with flame detection comprises: a switch module 10, a flame detecting module 20 and a processing module 30. The switch module 10 may include a knob, an electronic igniter, or the like disposed outside the gas furnace. The flame detection module 20 includes at least one visible light detecting unit 21, which can detect 450 nm to 500 nm. And radiation waves of wavelengths from 600 nm to 780 nm. Specifically, the visible light detecting unit 21 of the flame detecting module 20 can detect blue (450 nm to 500 nm wavelength) and red and yellow (600 nm to 780 nm wavelength) flames.

When the user operates the knob of the switch module 10 to turn on the gas furnace, the electronic igniter electronically ignites and simultaneously transmits an ignition signal 101 to the processing module 30; after receiving the ignition signal 101, the processing module 30 starts the flame detection. The module 20 is tested to enable the visible light detecting unit 21 to detect the radiation light of the gas furnace flame. When the visible light detecting unit 21 detects the radiated light of the wavelength of 450 nm to 500 nm, the first optical wave signal 211 is transmitted to the processing module 30, and when the visible light detecting unit 21 detects the radiated light of the wavelength of 600 nm to 780 nm, the transmission is performed. The second light wave signal 212 is to the processing module 30. When the processing module 30 receives the first light wave signal 211 and the second light wave signal 212 at the same time, or receives only the second light wave signal 212, the processing module 30 controls the opening of the air extracting device 40 to perform the air blowing operation, and at the same time At least one speaker unit and at least one lighting unit of the control alert device 50 issue an alert. In other words, the processing module 30 controls to turn on the air extracting device 40 and the warning device 50 as long as the second light wave signal 212 is received.

Specifically, in normal use, the gas should be completely burned, and the gas in the gas furnace should be blue (the wavelength of the radiation wave is about 450nm~500nm), and when the gas of the gas furnace is reddish yellow (radiation of light waves) When the wavelength is about 600nm~780nm), it means that the gas is not completely burned. At this time, carbon monoxide is generated. If the user does not deal with the situation immediately, there is a fear of carbon monoxide poisoning. In this embodiment, the visible light detecting unit 21 is used to detect the color of the gas furnace flame (ie, detecting radiation wavelengths of 450 nm to 500 nm and 600 nm to 780 nm wavelength) when the user turns on the gas furnace; When the blue (the processing module 30 receives only the first light wave signal 211), it indicates that the gas burner flame is completely burned and is in a normal use state, so the processing module 30 does not control the start of the air extracting device 40 or the warning device 50; The furnace flame is reddish yellow (the processing module 30 only receives the second light wave signal 212) or both reddish yellow and blue (the processing module 30 simultaneously receives the first light wave signal 211 and the first The second light wave signal 212) indicates that the gas burner flame is incompletely burned and there is a concern that carbon monoxide is generated. Therefore, the processing module 30 controls the start of the air extracting device 40 and the warning device 50 to immediately extract carbon monoxide and immediately pass through the warning device. 50 sends a warning sound or light to remind the user.

Briefly, the present invention utilizes the visible light detecting unit 21 to detect the combustion state of the gas furnace flame, and according to its combustion state (complete combustion and incomplete combustion), the starting air extracting device 40 and the warning device 50 are instantly controlled, thereby enabling Instantly extract the carbon monoxide generated when the gas burner flame is incompletely burned, and at the same time promptly notify the user, so that the problem of carbon monoxide poisoning can be effectively prevented.

In practical applications, there may be several factors in the red-yellow flame of the gas furnace. One is that there is a problem with the air conditioning adjustment of the gas furnace; the second is that the food is cooked and the soup overflows; the third is the poor supply of gas. . Therefore, in the actual operation, when the second light wave signal 212 is received and the air blowing device 40 is turned on, the gas furnace damper may be first controlled and continuously transmitted through the visible light detecting unit 21 for flame detection; If the processing module 30 does not receive the second light wave signal 212 after adjusting the gas furnace damper for a limited time, the processing module 30 does not cause the warning device 50 to issue an alarm.

After the gas furnace damper is adjusted, the processing module 30 still receives the second light wave signal 212, and the processing module 30 can pass through the flow meter installed on the gas supply line to detect whether the gas supply is good. If the gas supply is good, the problem may be that the soup is spilled. The processing module 30 can control the warning device 50 to issue a corresponding warning light or a warning sound (for example, music or voice), and can also be turned off at the same time. The gas supply valve of the gas furnace avoids the problem that the gas continues to be supplied after the gas is extinguished by the continuous scent of the broth, and the gas supply of the gas furnace can be shut off by the processing module 30 if the gas supply is poor. The valve is closed after a period of time, and at the same time, a corresponding warning light or warning sound is issued to remind the user that the gas supply is poor. Wherein, the foregoing warning device 50 may be based on the increase of the warning time, so that the warning sound is getting louder and louder, or the frequency of the flashing of the light is getting faster and faster; The warning device 50 can have a stop button, and the user can touch the stop button to stop the warning device 50. If the warning device 50 continues to be alerted for a period of time, the stop button is still not touched, and the processing module 30 Then the gas supply valve can be closed.

Briefly, when the processing module 30 receives the second optical signal 212, it may first control the opening of the air extracting device 40, while adjusting the gas furnace damper and detecting the gas supply flow rate to determine whether to control the warning device 50 to be issued. Warning, and determine the warning light or warning sound issued by the warning device 50.

[Second embodiment]

Referring to FIG. 3, in the practical application, in addition to the problem of carbon monoxide poisoning described in the above embodiments, gas leakage often occurs, which causes a problem of gas explosion; the gas furnace with flame detection of the present invention In addition to the above embodiments, it can effectively prevent the accidental occurrence of carbon monoxide poisoning, and can effectively prevent gas leakage and cause accidents of gas explosion. The details are as follows:

When the user operates the knob of the switch module 10 to turn on the gas furnace, the electronic igniter electronically ignites and simultaneously transmits an ignition signal 101 to the processing module 30; after receiving the ignition signal 101, the processing module 30 turns on the flame detection. The module 20 is tested to enable the visible light detecting unit 21 to detect the radiation light of the gas furnace flame. When the visible light detecting unit 21 does not receive any light wave signal (the first light wave signal 211 or the second light wave signal 212), the processing module 30 controls the start of the air extracting device 40 and the warning device 50 accordingly. For example, the processing module 30 may activate the air extracting device 40 and the warning device 50 and turn off the gas supply valve 60 at the same time when no light wave signal is received at all for a predetermined time.

Specifically, if the visible light detecting unit 21 does not receive the first light wave signal 211 and the second light wave signal 212, it indicates that the gas furnace flame is not ignited, for example, the user may not succeed in multiple ignitions, or the gas furnace flame may be During cooking, it is extinguished by external factors such as wind blows and soup spills. At this time, there is a concern that the gas is leaked, so the processing module 30 controls the start of the air extracting device 40 to extract the leaked gas. At the same time, the control warning device 50 issues an associated warning sound and a light signal to alert the user and simultaneously close the gas supply valve 60, thereby effectively avoiding the problem of gas explosion.

Combining the foregoing first embodiment with the embodiment, simply speaking, when the processing module 30 receives the second light wave signal 212 (indicating that the gas burner flame is incompletely burned and the carbon monoxide poisoning is suspected), or is not received. When any light wave signal (indicating that the gas furnace flame is extinguished or not ignited and there is a gas leakage problem), the processing module 30 controls the start of the air extracting device 40 to perform the air blowing operation, and controls the warning device 50 to issue a corresponding warning sound or It is a light and the gas supply valve 60 can be closed at the same time. Therefore, it can effectively avoid the accident of carbon monoxide poisoning or gas leakage.

[Third embodiment]

As shown in FIG. 4, the gas furnace 1 with flame detection includes: a switch module 10, a flame detecting module 20, a processing module 30, an air extracting device 40, and a warning device 50. The flame detection module 20 can have a visible light detecting unit 21, an infrared detecting unit 22 or an ultraviolet detecting unit 23. The relationship between the visible light detecting unit 21, the processing module 30, the air extracting device 40, and the warning device 50 is similar to that of the foregoing embodiment, and details are not described herein. In this embodiment, the flame detecting module 20 further includes an infrared detecting unit 22 that can detect a radiated light wave having a wavelength of 2500 nm to 3000 nm and generate a third light wave signal 221, and can detect The radiant light wave having a wavelength of 185 nm to 260 nm is generated, and accordingly, the ultraviolet detecting unit 23 of the fourth light wave signal 231 is generated; thereby, the gas furnace flame can be judged more quickly. Specifically, the infrared detecting unit 22 and the ultraviolet detecting unit 23 have faster sensing speeds than the visible light detecting unit 21, so that the presence of the gas furnace flame can provide more immediate relevant protection measures for the user.

In detail, after the processing module 30 receives the ignition signal 101, the infrared detection unit 22 or the ultraviolet detection unit 23 in the flame detection module 20 may be activated first, and the processing module 30 may receive the infrared detection through the determination processing module 30. The fourth optical wave signal 221 generated by the measuring unit 22 or the fourth optical wave signal generated by the ultraviolet detecting unit 23 231, to determine whether the gas furnace flame is picked up; if the gas furnace flame is not picked up (the third light wave signal 221 or the fourth light wave signal 231 is not received), the processing module 30 controls the start of the air extracting device 40 and the warning device 50 If the flame of the gas furnace is successfully picked up, the processing module 30 controls the visible light detecting unit 21 to detect the flame of the gas furnace, and determines whether the gas of the gas furnace is completely burned according to whether the second light wave signal 212 is received; The processing module 30 receives the second light wave signal 212 indicating that the gas furnace flame is in red and yellow incomplete combustion state, and the processing module 30 controls the air extracting device 40 to perform the air blowing operation, and simultaneously controls the warning device 50 to perform the warning operation. Briefly, when the processing module 30 does not receive the first light wave signal 211, the second light wave signal 212, and the third light wave signal 221, it indicates that the gas furnace flame is extinguished, and the processing module 30 controls the air extracting device 40 and the warning accordingly. Device 50 to extract the leaked gas in real time. Similarly, when the processing module 30 does not receive the first optical signal 211, the second optical signal 212, and the fourth optical signal 231, the air extracting device 40 and the warning device 50 are activated.

In another embodiment, after the processing module 30 receives the ignition signal 101, the visible light detecting unit 21 and the infrared detecting unit 22 (or the ultraviolet detecting unit 23) may be simultaneously activated, thereby excluding one of the detectors. When the unit is faulty, the problem of gas burner flame detection cannot be performed; in addition, the processing module 30 can also repeatedly confirm the operation to reduce the probability of misjudgment.

The infrared detecting unit 22 and the ultraviolet detecting unit 23 are more sensitive than the visible light detecting unit 21. Therefore, in a better application, during the process of detecting the gas burner flame by the visible light detecting unit 21, the infrared detecting unit 22 or the ultraviolet detecting unit 23 can continuously detect at the same time. For example, when the processing module 30 receives the second light wave signal 212, it indicates that the gas furnace flame is incompletely red-yellow, and if the gas furnace flame is extinguished, the processing module 30 immediately receives the third light wave. The signal module 221 or the fourth light wave signal 231, the processing module 30 can immediately turn off the gas supply valve, turn on the air suction device 40, and emit sound through the speaker unit of the warning device 50 or light through the light unit. Alert the user.

[Possible effects of the examples]

The gas furnace with flame detection of the invention comprises the following effects: the invention utilizes a visible light detecting unit to detect the color of the gas furnace flame, thereby determining the combustion state of the gas furnace flame, especially for incomplete combustion and flame extinction The state corresponding to the activation of the relevant air extracting device or the warning device to instantly discharge the carbon monoxide generated by the incomplete combustion of the gas furnace flame out of the room, or to discharge the leaked gas out of the room, and simultaneously issue relevant warning sounds and lights The user is alerted to the user's safety.

In addition, in another embodiment of the present invention, the visible light detecting unit further combines the sensitivity to determine the faster infrared detecting unit or the ultraviolet detecting unit to synchronously judge whether the gas furnace flame exists or not, thereby using the gas furnace. When the flame is extinguished, the relevant protection mechanism can be activated more quickly, and the processing module can perform repeated confirmation actions by the signals transmitted by the two detection units, thereby effectively reducing the probability of false detection by the flame detection module. The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalents of the present invention and the equivalents of the drawings are all included in the present invention. Within the scope of protection, it is given to Chen Ming.

1‧‧‧Gas furnace with flame detection

10‧‧‧Switch Module

101‧‧‧Ignition signal

20‧‧‧ Flame Detection Module

21‧‧‧ Visible light detection unit

211‧‧‧First lightwave signal

212‧‧‧Second lightwave signal

30‧‧‧Processing module

40‧‧‧Exhaust device

50‧‧‧Warning device

Claims (10)

A gas furnace with flame detection electrically connected to a ventilation device and a warning device, the gas furnace with flame detection comprises: a switch module for igniting a gas flame of a gas, and accordingly generating an ignition a flame detecting module for detecting a combustion state of the gas burner flame, the flame detecting module comprising a visible light detecting unit for detecting a radiation wave of a wavelength of 450 nm to 500 nm and a wavelength of 600 nm to 780 nm And illuminating the light wave and correspondingly generating a first light wave signal and a second light wave signal; and a processing module electrically connected to the switch module and the flame detecting module, when the processing module receives the lighting signal The processing module controls the flame detection module to detect the gas in the gas furnace, and if the processing module simultaneously receives the first light wave signal and the second light wave signal or only receives the second light wave signal The processing module controls the activation of the air suction device and the warning device. The gas oven with a flame detection according to claim 1, wherein the processing module controls the flame detecting module to detect the flame of the gas burner, and if the processing module simultaneously receives the first light wave signal and When the second light wave signal only receives the second light wave signal, the processing module closes a gas supply valve or adjusts a gas furnace damper. The fire detection gas oven of claim 1, wherein the processing module controls the flame detection module to detect the gas flame of the gas furnace, if the processing module does not receive the first light wave signal and The second optical wave signal, the processing module controls the activation of the air suction device and the warning device. The fire detection gas oven of claim 1, wherein the processing module controls the flame detection module to detect the gas flame of the gas furnace, if the processing module does not receive the first light wave signal and The second light wave signal, the processing module closes a gas supply valve or adjusts a gas furnace damper. The flame detection gas oven of claim 1 , wherein the flame detection module comprises at least one infrared detection unit or at least one ultraviolet detection unit. The flame detection gas oven of claim 5, wherein the infrared detection unit detects a radiation wave of a wavelength of 2500 nm to 3000 nm and generates a third light wave signal; and when the processing module receives the ignition signal, the control The flame detecting module performs flame detection, and when the first light wave signal, the second light wave signal or the third light wave signal is not received, the processing module activates the air extracting device and the warning device. The gas furnace with a flame detection according to claim 6, wherein the processing module closes a gas supply when the first light wave signal, the second light wave signal or the third light wave signal is not received by the processing module valve. The flame detection gas oven of claim 5, wherein the ultraviolet detection unit detects a radiation wave of a wavelength of 185 nm to 260 nm and generates a fourth light wave signal; and when the processing module receives the ignition signal, the control The flame detecting module performs flame detection, and when the first light wave signal, the second light wave signal or the fourth light wave signal is not received, the processing module activates the air blowing device and the warning device. The gas oven with flame detection according to claim 8, wherein the processing module closes the gas supply of the gas when the first light wave signal, the second light wave signal or the fourth light wave signal is not received by the processing module valve. The gas furnace with flame detection according to claim 1, wherein the warning device comprises at least one speaker unit and at least one lighting unit.