258 results about "Flame detection" patented technology

The invention discloses a safety and disinfection integrated system based on AI analysis linkage control electromagnetic valves, and relates to the technical field of intelligent fire fighting, and the safety and disinfection integrated system comprises a flame detection camera, a network input and output module, a safety and disinfection integrated machine, an execution module and an acousto-optic alarm bell. According to the security and disinfection integrated system for linkage control of the electromagnetic valve based on AI analysis, the advanced AI visual recognition technology and an electromagnetic valve linkage control mechanism are deeply fused, the efficiency and the precision degree of fire safety management are greatly improved, flame characteristics are precisely recognized by means of a deep learning model, and the safety and disinfection effect is improved. The limitation that traditional fire behavior detection is easily influenced by environmental factors is broken through, the accuracy and reliability of fire behavior recognition are greatly enhanced, the system supports multi-modal data fusion, the confidence coefficient of fire behavior judgment is further improved, adjacent electromagnetic valves can be automatically started according to the position of a fire behavior in the linkage control link, an effective fire extinguishing isolation belt is constructed, and the fire extinguishing efficiency is improved. And fire spreading is effectively restrained.

This invention discloses a method and system for detecting wall radiation information through flame penetration. The method determines the radiation wavelength range, and within this range, establishes a wall radiation intensity detection model and a flame radiation intensity detection model, showing the distribution of wall radiation intensity and flame radiation intensity with radiation wavelength. It also obtains the radiation wavelength λ when the wall radiation intensity equals the flame radiation intensity. eq The peak wavelength λ when the wall radiation intensity is at its maximum. max When the radiation wavelength λ eq Less than the peak wavelength λ max At that time, the wavelength for detecting wall radiation information is the peak wavelength λ. max When the radiation wavelength λ eq Greater than the peak wavelength λ max At that time, the wavelength for detecting wall radiation information is the radiation wavelength λ. eq The wall radiation information is detected according to the detection wavelength determined above. The present invention finds a suitable band range for wall radiation detection by accurately quantifying wall radiation and flame radiation, and can obtain wall radiation information by penetrating the flame.

The invention discloses an infrared and ultraviolet flame detector with multiple safety redundancy and an anti-explosion control method, and relates to the technical field of flame detection, and the anti-explosion control method comprises the steps: S1, obtaining the multi-source fire data of a target object through a signal obtaining module; s2, analyzing the multi-source fire data through a dynamic coupling adjustment module; s3, performing time domain association verification on the first monitoring data through a time domain continuity verification module, and generating second monitoring data; and S4, the grading execution module sends an alarm signal according to the second monitoring data and adopts grading execution processing. Through ultraviolet polarization degree and dielectric constant dual-threshold triggering, interference of the metal reflective layer is stripped, so that the smoldering detection rate of a covered scene is increased from less than or equal to 60% to more than or equal to 95%; and moreover, the smoldering authenticity is subjected to cross validation through the bidirectional verification module, so that the problem of missing report of a traditional flame detector caused by a covering effect of'reflective interference 'on'smoldering monitoring' is avoided.

A flame detection system is disclosed. The flame detection system includes: an image capture unit configured to capture an image of a field of view (FOV); a flame detector configured to capture a first set of spectral band data and a second set of spectral band data; and a processor configured to classify the one or more images and the first set of spectral band data, assign a weight to each of the second set of spectral band data, receive a flame count for each of the second set of spectral band data, determine a weighted count for each of the flame counts, and determine a weighted count for each of the flame counts. A number of weighted counts exceeding its respective threshold is determined, and a flame is determined to be present within the FOV when the number is greater than or equal to a number threshold, and a flame is determined to be absent within the FOV when the number is less than the number threshold.

The invention relates to the technical field of fire detection and early warning, in particular to an intelligent ultraviolet flame detection and early warning system and method suitable for complex industrial scenes. Comprising distributed multispectral ultraviolet detection nodes and a central processing early warning unit. The nodes carry out signal acquisition and preliminary identification through a multispectral sensor, local processing and high-precision time synchronization; and the central unit fuses multi-node data, performs three-dimensional flame positioning by using a TDOA algorithm, performs machine learning recognition and false alarm elimination, and performs trajectory tracking by using a Kalman filter so as to realize graded early warning linkage. According to the intelligent ultraviolet flame detection and early warning system and method suitable for the complex industrial scene, the problems that in the prior art, the false alarm rate is high, flame positioning is not accurate, trajectory tracking is missing, cooperative monitoring is limited and the like are solved or at least relieved, false alarms are effectively reduced, and the positioning precision, the tracking capacity and the early warning reliability are improved.

The invention discloses an industrial ignition gun, and relates to the field of ignition devices, the industrial ignition gun comprises an ignition assembly, a fuel gas conveying assembly and a flame detection assembly, a combustion area is formed on the same side of the ignition assembly, the fuel gas conveying assembly and the flame detection assembly, the fuel gas conveying assembly is used for conveying combustible gas to the combustion area, and the flame detection assembly is used for detecting the combustible gas. The ignition assembly is used for generating point discharge in the combustion area so as to ignite the combustible gas and form a high-temperature flame area; the flame detection assembly is used for collecting ion current signals of the high-temperature flame area. The method has the advantages that the flame detection accuracy is improved, and the equipment operation safety is improved.

The invention relates to a motor vehicle (100) with a refrigerant circuit (102) operated with a CO2 refrigerant, wherein an outlet (104) is provided on the refrigerant circuit (102), characterized in that the outlet (104) a) is configured to flood the engine compartment (106) with CO2 upon detection of an incipient fire by means of a sensor (108) located in the engine compartment (106) for flame detection, and / or b) is configured to be connected to a fire extinguishing valve (110) or directly to a fire extinguishing hose (112) such that the CO2 refrigerant from the refrigerant circuit (102) can be discharged via the fire extinguishing valve (110) and / or the fire extinguishing hose (112) at a discharge point (118) located remote from the outlet. The invention also relates to a method for extinguishing an incipient fire in a motor vehicle (100).

The utility model discloses a quick start detector for fire fighting, which belongs to the field of fire fighting and comprises a gas storage device, a gas inlet is arranged on the upper portion of the gas storage device, a gas outlet is arranged on the lower portion of the gas storage device, a hollow base is further connected in the lower portion of the gas storage device, and a plurality of flame detection windows are arranged on the side wall of the hollow base. The lower part of a gas outlet of the gas storage device and the upper part of the hollow base are coaxially provided with a temperature control release device, the lower part of the hollow base is internally connected with a locking nut, a temperature sensing glass column is arranged between the temperature control release device and the locking nut, and the side wall of the gas storage device is provided with a pressure release outlet. The fire-fighting quick-start detector replaces a traditional temperature detection continuous pressing structure, the quick-start detector is directly installed in a temperature detection area, when a fire alarm exists, a valve on a fire extinguishing agent bottle is quickly and stably started, safe release of chemicals in the fire extinguishing agent bottle is guaranteed, and the fire-fighting quick-start detector has great market value.

The invention provides a flame detection and stabilization combined device, and relates to the technical field of combustors. The device comprises a combustion chamber, a mounting base, a flame detection sensor and a flame stabilizer, the mounting base is connected to the interior of the combustion chamber, the flame detection sensor is connected with the mounting base, the flame stabilizer is connected to the flame detection sensor, and a backflow area is formed above the flame stabilizer. By connecting the flame stabilizer to the flame detection sensor, the device can complete the functions of flame detection induction and flame stabilization at the same time, and the flame stabilizer and the flame detection sensor can be combined and connected together, so that the occupied space is saved, the structural form is optimized, the design and manufacturing difficulty is greatly simplified, and the production cost is reduced; besides, different types of flame stabilizers and different types of flame detection sensors can be combined and matched for use according to actual use requirements, so that the use requirements of different application scenes are met.

The invention relates to the technical field of power distribution cabinet alarm systems, and provides a smart power grid power distribution cabinet alarm device and a power distribution cabinet, the smart power grid power distribution cabinet alarm device comprises an environmental data detection module, an alarm module, a fire extinguishing module, an intelligent identification man-machine interaction module and a central controller with a display, the alarm module comprises an early warning module and an acoustoelectric module, the environment data detection module comprises an arc light detection module, a smoke concentration detection module, a temperature detection module and a flame detection module, and the fire extinguishing module comprises a plurality of gas fire extinguishing controllers, a plurality of gas fire extinguishers and a gas source box. The environment data detection module monitors the conditions of temperature, smoke, sparks, electric arcs, carbon monoxide, carbon dioxide and the like in the power distribution cabinet, the monitoring conditions are uploaded to the central controller after detection is completed, various data can be checked on the display, and the central controller sends instructions to the alarm module and the fire extinguishing module to cooperate with prevention alarm, rapid fire extinguishing and power distribution cabinet protection.

The utility model provides a fire suppression device, which comprises a detection unit, a processing unit and an execution unit, and is characterized in that the detection unit at least comprises an infrared temperature sensor, a camera module with a flame recognition function and a laser ranging module, the infrared temperature sensor and the camera module with the flame recognition function are used for detecting flames, the laser ranging module is used for determining an ignition point, and the detection unit sends a detected signal to the processing unit; the processing unit is used for processing the received signal, sending the signal to the laser ranging unit according to a processing result, and sending the signal to the execution unit; and the execution unit is used for receiving the signal and executing fire suppression on the ignition point. The fire suppression device is compact in structure, high in flame detection and positioning accuracy, fast in fire suppression response, low in maintenance cost and high in cost efficiency performance.

A battery safety monitoring system includes a central controller, a fault detection sensor, a flame detection apparatus, and a fire extinguishing apparatus. The fault detection sensor is configured to detect a fault in a target battery module and send fault information to the central controller. The central controller is configured to control the flame detection apparatus to perform flame detection on the target battery module based on the fault information. The flame detection apparatus is configured to send, when detecting a fire in the target battery module, fire information to the central controller. The central controller is further configured to control the fire extinguishing apparatus to start a fire extinguishing operation for the target battery module. There is no need to deploy excessive sensors. Instead, the flame detection apparatus is controlled to perform flame monitoring on the target battery module, to implement low-cost and accurate battery safety monitoring.

The invention relates to a biomass pyrolysis and charcoal material surface densification control technology, in particular to an end face directional whitening control method for chrysanthemum charcoal production, which specifically comprises the following steps: in a sectional box body, deeply carbonizing wood with uniform end face orientation; unlocking and whitening after the core-surface temperature difference delta T is judged to be less than or equal to 25 DEG C through multi-point temperature measurement and model estimation; in the whitening stage, an end face annular flow guide and radiation heat exchange coupling structure is adopted, the temperature in the box is increased to 850-950 / 1000 DEG C from 520 + / -20 DEG C at the speed of 10-18 DEG C / min, and O is controlled to be 5-9 vol%, the box pressure is 20-80 Pa, and the end face cross-flow wind speed is 2.0-4.0 m / s; and coating 1-3mm of ash within 0-180 seconds after whitening is finished, and then performing inert cooling to be within 450 DEG C under the condition that O is less than or equal to 3%. O / box pressure / flame detection / temperature four-interlocking and door area front chamber inerting are arranged. According to the method, the proportion and whiteness stability of the chrysanthemum grains can be remarkably improved, bursting and collapsing are reduced, the whitening time is shortened, and energy consumption is reduced.

The application discloses an oxyacetylene torch operation intelligent monitoring system and method, which comprises the following steps: 1, real-time image acquisition of the monitoring area is carried out through an information acquisition subprogram; then, data preprocessing is carried out through a data processing subprogram, and a target detection algorithm YoloV5 is used to identify and locate the target in the image; 2, the relationship between the specific target relative positions in the visible light image and the far infrared image is detected through a flame detection subprogram, a high-temperature area without visible fire or a flame area is judged and analyzed on site, and oxyacetylene flame and fire flame are distinguished; 3, the real-time state of the monitoring area is fed back through a result output subprogram, and the monitoring result is output. The application improves the monitoring accuracy, does not need supervision, and improves the safety of the torch operation.

The present application relates to a kind of fire detection methods for intelligent operation and maintenance fire patrol robot, belong to computer vision field.It includes the following steps: obtaining fire scene image, constructs fire detection dataset;Fire detection model is constructed, the fire detection model takes YOLOv5s as benchmark model, including input layer, backbone network, neck network and detection head;The C3 module of the end in the backbone network of YOLOv5s model is replaced as DenseC3 module;Multidimensional cooperation attention module MCA is embedded in the output end of neck network;Group convolution module is introduced in neck network, and the CBS module of neck network is replaced as GSCBS module;Fire detection model is trained using dataset, and the trained model is obtained;The image to be detected is input into the trained model, and the fire detection result is obtained.The present application can improve the precision of flame detection while ensuring real-time.

The invention provides an Arduino-based pet home safety protection method and system, and the method comprises the following operation steps: S1, hardware deployment: installing a human body infrared sensor, an NFC recognition module, a flame sensor, a voice alarm device and a 4G alarm device in a house, and wearing a necklace with an NFC tag for a pet; s2, system operation and monitoring, wherein an infrared sensor monitors a personnel state; the NFC identification module judges the position of the pet; the flame sensor detects open fire hidden dangers; and respectively entering the steps S3, S4, S5 and S6 according to monitoring results. Based on the Arduino technology, human body infrared induction, NFC recognition and positioning, flame detection and 4G remote communication technologies are fused, innovative changes are brought to pet family safety protection, the intelligent monitoring and multi-scene response design of the system significantly improves the household safety protection management efficiency and the pet protection quality, and the safety and controllability of the pet household environment are greatly improved.

This invention discloses a fuel-fired cascade heating device for the primary air duct of a boiler coal mill, relating to the technical field of boiler auxiliary systems in thermal power plants. The device includes a large-capacity oil gun (1), a small-capacity oil gun (2), a primary air duct heating section (3), an oil gun flame detection device (4), a combustion air system (5), and a local control cabinet (6). The large-capacity oil gun (1) and the small-capacity oil gun (2) have different rated fuel consumption. Both are installed on the primary air duct heating section (3), using compressed air atomization to atomize the fuel and burn it within the duct. The combustion air system (5) draws combustion air from the boiler's sealed air main pipe and sends it into the primary air duct heating section (3). The local control cabinet (6) has a built-in PLC controller, which performs cascade heating control on the large-capacity oil gun (1) and the small-capacity oil gun (2) according to a four-stage sequence: "simultaneous activation of both guns—stopping the small gun—switching between large and small guns—stopping all oil guns," gradually raising the primary air temperature from ambient temperature to a target temperature range of 180–220°C. This invention solves the problem of insufficient heating capacity of steam heat exchangers under cold start conditions, which leads to insufficient drying output of coal mills. It achieves an engineering-feasible trade-off between fuel consumption and heating rate, and can also serve as an auxiliary heat source for plasma oil-free ignition systems.

The invention discloses a gallium oxide film double-array device group for flame detection and identification and a preparation method and application thereof, and belongs to the technical field of semiconductor photoelectric devices and flame monitoring. The device group comprises two arrays which are complementary in function and independent in structure: a Ga2O3 ultraviolet detector array which is grown based on a high-temperature annealing sapphire substrate and is consistent in orientation and is used for performing high-signal-to-noise-ratio rapid detection on flame solar-blind ultraviolet radiation; and the non-oriented Ga2O3 photoelectric synapse array is deposited on the unannealed substrate, and learning and classification identification of flame spatio-temporal characteristics are realized by utilizing plasticity caused by defect capture of the non-oriented Ga2O3 photoelectric synapse array. In the preparation process, the orientation-controlled Ga2O3 active layer and the non-orientation Ga2O3 active layer are respectively obtained by controlling whether the sapphire substrate is subjected to high-temperature annealing treatment or not. The two arrays can form a solution integrating detection and identification. The scheme is simple in structure, low in power consumption, easy to expand and suitable for industrial security and protection, combustion monitoring, forest fire early warning and other scenes.

The invention discloses a spot inspection fire circuit and gas equipment, and relates to the technical field of electric appliances. The spot inspection circuit comprises a control unit, an oscillation unit, an ignition unit, a flame inspection unit and a functional electrode, the oscillation unit is used for generating a first sinusoidal voltage according to the ignition signal output by the control unit and generating a second sinusoidal voltage according to the non-ignition signal output by the control unit; the flame detection unit is used for collecting and sending a flame detection signal to the control unit through a functional electrode when the oscillation unit outputs the first sinusoidal voltage or the second sinusoidal voltage so as to realize a flame detection function; the ignition unit is used for driving a functional electrode to discharge when the oscillation unit outputs the first sinusoidal voltage so as to realize an ignition function; the ignition unit does not work when the oscillation unit outputs the second sinusoidal voltage. According to the scheme, two functions of ignition and flame detection can be realized at low cost through one circuit, and the two functions can be performed synchronously, so that the safety of gas equipment is improved.

The invention discloses smoke and fire identification equipment based on a double-filtering switcher and a flame identification method, and relates to the field of fire fighting. A CMOS (complementary metal oxide semiconductor); a network transmission system; a power supply module; the switchable double optical filter mechanism is switched between the infrared cut-off optical filter and the full-spectrum optical filter; an analysis model is arranged in the micro-processing system, and the micro-processing system is configured to control the infrared cut-off optical filter to cut into an optical path in a conventional state to obtain a visible light image for flame initial detection, and control the full-spectrum optical filter to cut into the optical path and reduce the CMOS sensitivity to obtain a full-spectrum image for flame confirmation. According to the invention, a switchable double-optical-filter mechanism is adopted for a single camera, and light is filtered through two switches, so that the flame recognition speed is improved while the cost is reduced, the CMOS sensitivity is adjusted, repeated de-duplication is carried out on an image, and image analysis and comparison data of comparison of a conventional scene and a flame scene by the camera are enriched and improved.

The utility model relates to a boiler flame detection cooling air start-stop control circuit and a boiler flame detection system. The start-stop control circuit comprises a power supply loop, a remote / local switching loop, a fan start loop and a fan stop loop. The power supply loop is respectively connected with the remote / local switching loop, the fan starting loop and the fan stopping loop; the output end of the remote / local switching loop is respectively connected with the fan starting loop and the fan stopping loop; a first control end of the fan starting loop is connected to the remote / local switching loop, a second control end is connected to the remote DCS system, and an output end is connected to the cooling fan; a first control end of the fan shutdown loop is connected to the remote / local switching loop, a second control end is connected to the remote DCS system, and an output end is connected to the cooling fan. The fire detection cooling fan can be started and stopped locally and remotely by the DCS, so that the safety risk of starting the fire detection cooling fan locally by an operator is reduced, and the working efficiency of a production field is improved.

The invention relates to a safety control system and method for a fuel oil heater, belongs to the field of safety control of combustion equipment, and aims to solve the problems that flame detection in the prior art is weak in anti-interference capability, lacks a light detection component fault self-detection mechanism and cannot realize accurate linkage of ignition, combustion and oil supply. The system comprises a combustion chamber, an ignition assembly, a motor, a fan, an air pump, an oil tank, an air guide pipe, an oil nozzle, a photodiode and a control panel. Wherein the ignition assembly, the oil nozzle and the photodiode are arranged at the first end of the combustion chamber, and the motor synchronously drives the fan and the air pump; the flame detection circuit is combined with pulse signal judgment logic to automatically correct external light source interference; the control panel controls the ignition assembly and the motor to be started and stopped according to a preset time sequence, and fuel oil conveying is cut off when it is not detected that the flame normal combustion signal exceeds the set time length. The flame detection anti-interference capability is improved, and photodiode fault self-detection and accurate linkage of ignition, combustion and oil supply are realized.

The utility model discloses a pyroelectric infrared sensor signal processing circuit and an infrared multi-frequency flame detector. The signal processing circuit comprises a primary filter circuit, a first-stage integral amplification circuit, a reference signal generation circuit, two differential amplification circuits and an output clamping circuit. The input end of the primary filter circuit is connected to the pyroelectric infrared sensor, and the output end of the primary filter circuit is connected to the input end of the first-stage integral amplification circuit; the output end of the first-stage integral amplification circuit is respectively connected to the input end of the reference signal generation circuit and the second input end of the second-stage differential amplification circuit; the output end of the reference signal generation circuit is connected to the first input ends of the two differential amplification circuits respectively; the output end of the second-stage differential amplification circuit is connected to the second input end of the third-stage differential amplification circuit; and the output end of the third-stage differential amplification circuit is connected to the output clamping circuit. According to the utility model, the quality of flame detection signals is improved, so that the flame detection precision is improved.

A stovetop camera application device is disclosed, which is a stovetop Wi-Fi enabled camera system and corresponding software application. The stovetop camera application device comprises a heat-resistant camera component with a wide-angle lens that operates in a normal image mode or a heat camera mode. The camera component is installed above a stovetop hood or is wall mounted via magnets and angled brackets. The camera component includes sensors to detect methane gas or smoke. The corresponding software application has customizable features, such as alarms for flame detection, steam alerts, boiling notifications, and timers to enhance functionality and safety.

The application discloses a kind of long-distance small target flame detection method and system.For the scale of small target flame in visible light image is too small, feature is fuzzy and is easily disturbed by complex background, the detection method used in the application includes: the visible light flame image collected is labeled, and general flame dataset and small target flame dataset are obtained;Small target flame detection model based on visible light image is constructed based on the optimized YOLOv11 target detection model;Small target flame detection model is trained using general flame dataset, and the small target flame detection model after training monitors flame information in scene in real time;Generalization verification is carried out using small target flame dataset, and the overall performance of small target flame detection model is analyzed.The detection method and system of the application can maintain high detection accuracy and high robustness of small target flame under long-distance, complex background and multi-angle conditions.

The utility model provides a kind of modularization flame detection module based on pyroelectric principle, to solve the technical problems that existing flame detector cannot modularization design, structure is more complex, production and after-sales debugging are complicated.The utility model includes circuit board, and single-chip microcontroller, external output interface and at least two sensors are equipped on circuit board, and at least two sensors are connected with single-chip microcontroller respectively through a signal processing circuit, and external output interface is connected with single-chip microcontroller.The utility model modularization design and concentrate in a small size circuit board to the core circuit, separate component modularization, facilitate production test, save a lot of time for the production of complete machine, improve production efficiency;Modularization design makes production process more standardized and flow, reduces uncertainty and complexity in production;Shorten production cycle, improve efficiency, also save a lot of time for the research and development of complete machine;With specific function and interface, different specifications of product can be built.

The invention discloses a flame detection method and device for a pipe gallery scene, and belongs to the technical field of flame detection. Projecting the initial camera data onto the image to obtain a preliminary projection image, and selecting a candidate flame region in the preliminary projection image; determining the position of the region of interest in the initial camera image according to the position of the candidate flame region in the initial projection image; extracting flame features in the region of interest to obtain feature extraction data; and inputting the feature extraction data into a feature classification model, wherein the feature classification model identifies the flame according to the feature extraction data. According to the method, the flame features of the region of interest in the camera data are extracted, so that the response speed and the recognition precision of a fire detection scheme based on image processing are improved.

The invention provides an anti-adhesion regeneration roller for asphalt recovery and a control method thereof, and the anti-adhesion regeneration roller comprises a base, a roller body is rotatably mounted on the base, and the roller body is divided into a plurality of heating areas along the axial direction; the multiple combustion assemblies are arranged at intervals in the axial direction of the barrel body and correspond to the heating areas one to one in position; the combustion assembly comprises a combustion cover arranged on the outer wall of the barrel in a sleeving mode, a combustion nozzle arranged at the bottom of the combustion cover, an opening degree adjusting valve arranged on a connecting pipeline of the combustion nozzle and the fuel supply equipment, a barrel wall temperature measuring device and a flame detector. The regeneration roller provided by the invention realizes uniform and stable control of the temperature of the roller wall through the axial partition design and independent and accurate adjustment of fuel supply to each area, so that the adhesion of high-mixing-amount RAP is effectively prevented, and the heat exchange efficiency and the production continuity are remarkably improved.

The invention relates to the technical field of fire detection, in particular to an infrared flame recognition and false alarm suppression method and system based on three detectors, and the system integrates a fixed infrared detector, a movable infrared detector and a micro-amplitude vibration excitation source. After a suspicious signal is triggered, active diagnosis is started, fusion analysis of space contour and excitation coupling characteristics is carried out on a dynamic signal collected by a detector under the background of scanning and vibration excitation, and deterministic judgment is carried out according to the fusion analysis so as to identify real flames and suppress interference. The invention can solve or at least alleviate the problem of static space and dynamic spectrum fuzziness that the sensitivity and the false alarm rate are difficult to balance in the existing infrared flame detection, and provides the infrared flame identification and false alarm suppression method and system based on the three detectors, which can eliminate the fuzziness without sacrificing the detection sensitivity and improve the detection accuracy. And accurate identification and effective suppression of a high-confusion interference source are realized.

A barbecue arrangement comprising a barbecue body having a cooking volume, one or more burners positioned to provide heat to the cooking volume; a gas source adapted to supply a gas to the one or more burners, and one or more control means to control the flow of gas from the gas source to the one or more burners producing a flame when the gas is ignited; a flame detection assembly, the flame detection assembly adapted to sense the flame from the one or more burners and a control means adapted to shut off the gas flow to the one or more burners if the flame is not detected within a pre-determined period of time.