Portable heating fireplace using butane gas

Abstract

The invention discloses a portable heating fireplace using butane gas, and relates to the technical field of heating fireplaces, a main valve is in direct butt joint with a butane gas tank, and the main valve introduces butane gas into a soft fire burner system provided with a closing protection module and a main burner system under the control of a knob; the main burner system comprises a nozzle, an oxygen mixing pipe and a profiling burner which can be firmly installed in the body frame, and flames generated when the soft fire burner system is ignited can ignite fuel gas overflowing from the surface of the profiling burner. The closing protection module sends a signal to an electromagnetic valve on the main valve to stop all gas supply when flameout or oxygen deficit or toppling of the body frame is detected; the upper end of the heat conduction element extends to be close to combustion flames of the profiling furnace end, the lower end of the heat conduction element is attached to the outer wall of the butane gas tank, and a heat dissipation element is arranged at the lower end of the body frame and enables hot air to exchange heat with the surface of the butane gas tank. According to the invention, the ornamental value, portability and use safety are improved, and the device can be normally used in a low-temperature environment.

Description

Technical Field

[0001] The invention relates to the technical field of heating fireplaces, in particular to a portable heating fireplace using butane gas. Background Art

[0002] Traditional ceramic honeycomb heaters or other types of heaters that use butane as fuel all provide heating by burning a short flame or by radiating heat from a flame that burns a red metal mesh, and are basically not ornamental.

[0003] In addition, traditional heaters that use butane as fuel cannot ignite normally or cannot work normally and continuously when the temperature is below 10 degrees. At the same time, since the vaporization temperature of butane gas is -0.5 degrees Celsius, the temperature of butane gas drops rapidly due to vaporization during use, and frost forms on the outside of the gas tank, reducing the heat absorption rate. At this time, the vaporization amount in the gas tank will drop rapidly, causing the burner flame of the heater to become very small; even if some heaters have added heat conductive plates, due to structural design problems, the heat value transmitted from the heat conductive plate to the gas tank is insufficient, or the heat value transmitted from the heat conductive plate to the gas tank is too high, which will cause the gas tank temperature to be too high in a slightly higher temperature environment, resulting in the risk of explosion. Based on this, conventional butane-fueled heaters will not be able to use a high fire normally at 10 degrees Celsius, and basically cannot be used normally at temperatures below 7 degrees Celsius. Summary of the invention

[0004] The purpose of the present invention is to provide a portable heating fireplace using butane gas to solve the problems existing in the above-mentioned prior art, improve the ornamental value, portability and safety of use, and enable normal use in a lower temperature environment.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a portable heating fireplace using butane gas, comprising a main valve, a main body frame, a closing protection module installed on a base in the main body frame, and a main burner system installed in the main body frame. The main valve can be directly connected to a butane gas tank. Under the control of a knob, the main valve introduces butane gas to a low-fire burner system equipped with the closing protection module and the main burner system. The main burner system comprises a nozzle, an oxygen mixing pipe and a contoured burner head that can be firmly installed in the main body frame. The main body frame can protect the circumference of the contoured burner head. The low-fire burner The flame generated when the system is ignited can ignite the butane gas overflowing from the surface of the contoured burner head. The shutdown protection module can send a signal to the solenoid valve on the main valve to stop all butane gas supplies when flameout or oxygen deficiency is detected or when the main body frame is detected to have fallen over. A heat-conducting element is provided in the main body frame, and the upper end of the heat-conducting element extends to the combustion flame close to the contoured burner head, and the lower end of the heat-conducting element is attached to the outer wall of the butane gas tank. A heat-dissipating element is also provided at the lower end of the main body frame, and when the heat-dissipating element is started, the hot air generated by the combustion can exchange heat with the surface of the butane gas tank.

[0007] Preferably, the heat-conducting element is a heat-conducting plate, which includes a heat transfer portion and an arc portion, the upper end of the heat transfer portion extends to the burning flame close to the contoured burner head, the lower end of the heat transfer portion is connected to the upper end of the arc portion, and the arc portion is attached to the outer wall of the butane gas tank.

[0008] Preferably, the heat dissipation element is a DC heat dissipation fan, which is powered by connecting to a battery box or an external DC power supply, and is disposed near one end of the butane gas tank.

[0009] Preferably, an internal circulation channel is provided inside the shaped burner head, a metal tube is installed on the shaped burner head, both ends of the metal tube are respectively connected to one end of the internal circulation channel and the air outlet pipe of the main valve, a plurality of grooves are provided on the outer surface of the shaped burner head, small holes are provided on the outer surface of the shaped burner head or in the grooves, the small holes can be connected to the internal circulation channel, and a metal wire is installed in the groove.

[0010] Preferably, the contoured furnace head is made of refractory material; screws are installed at the bottom of the contoured furnace head, and the screws can pass through the bottom plate of the main body frame and be fastened by nuts.

[0011] Preferably, the shutdown protection module includes a flameout protection component and an anti-dump switch, the flameout protection component includes the low-fire burner system, an ignition needle and a temperature sensor, the low-fire burner system includes a small nozzle, a small oxygen mixing hole and a low-fire burner, when the low-fire burner is ignited and burned by the ignition needle, the temperature sensor can detect the temperature change signal at the low-fire burner, and send a signal to the solenoid valve on the main valve when oxygen-deficient combustion is detected, and the solenoid valve on the main valve actively closes the butane gas supply at the outlet pipe of the main valve, and the anti-dump switch can send a signal to the solenoid valve of the main valve when the inclination angle of the main frame is greater than the set angle, and the solenoid valve on the main valve closes the butane gas supply of the main valve to the low-fire burner and the main burner system.

[0012] Preferably, the butane gas tank is directly installed and connected to the main valve, and the middle part of the air outlet pipe of the main valve is connected with an air outlet branch pipe, and the air outlet branch pipe is connected to the low-fire burner system. The air outlet of the air outlet branch pipe is the low-fire burner. The first end of the air outlet pipe is connected to the main valve, and the second end of the air outlet pipe is connected to the nozzle and the oxygen mixing pipe of the main burner system and then to the contoured burner head. The main valve is opened by rotating the knob of the main valve, and butane gas is supplied to the contoured burner head through the air outlet pipe, and is supplied to the low-fire burner through the air outlet pipe and the air outlet branch pipe. The knob is used to control the supply of butane gas to the low-fire burner, control the ignition of the low-fire burner, control the supply of butane gas to the contoured burner head and adjust the amount of butane gas.

[0013] Preferably, the temperature sensor is arranged near the edge of the small fire burner, and when the small fire burner is ignited, the temperature sensor can detect the temperature change of the edge flame of the small fire burner. When the flames of the small fire burner and the main burner system are accidentally extinguished and the oxygen content of the surrounding air is lower than the safe content for the human body, the temperature around the temperature sensor will change. The temperature sensor detects the temperature change signal and sends it to the solenoid valve on the main valve. The solenoid valve on the main valve closes all butane gas supplies from the main valve to the main burner system and the small fire burner.

[0014] Preferably, the knob includes an ignition position and a flame adjustment position, and the flame adjustment position can infinitely adjust the flame size between off and maximum flame. When the knob is rotated to the ignition position, the main valve can supply butane gas to the low-fire burner system and the contoured burner head. When the knob is pressed, the ignition switch is triggered to control the ignition needle to ignite the low-fire burner. By rotating the knob to different flame sizes in the flame adjustment position, different flow rates of butane gas can be supplied to the contoured burner head.

[0015] Preferably, the main valve is provided with a solenoid valve, and the main valve has pressure reduction and regulation functions, and the main valve can receive a signal and automatically close the gas output of the main valve.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The portable heating fireplace using butane gas provided by the present invention has a main valve that can be directly connected to a butane gas tank. Under the control of a knob, the main valve introduces butane gas to a small-fire burner system and a main burner system equipped with a closing protection module. The main burner system includes a nozzle, an oxygen mixing pipe, and a contoured burner head that can be firmly installed in a main body frame, thereby ensuring the safety and portability of the product. The main body frame can protect the circumference of the contoured burner head to improve the protection effect. The flame generated when the small-fire burner system is ignited can ignite butane gas overflowing from the surface of the contoured burner head. The closing protection module can send a signal to the solenoid valve on the main valve to stop all butane gas supplies when flameout or lack of oxygen is detected or when the main body frame is detected to have fallen over, thereby playing a role. The flameout protection function avoids accidents and reduces the risk of use. A heat-conducting element is arranged in the main body frame, and the upper end of the heat-conducting element extends to the burning flame close to the shaped burner head, and the lower end of the heat-conducting element is attached to the outer wall of the butane gas tank, and then the heat generated by the burning of the shaped burner head is conducted to the surface of the butane gas tank through the heat-conducting element to heat up the surface of the butane gas tank. A heat dissipation element is also arranged at the lower end of the main body frame, and when the heat dissipation element is started, the hot air generated by the combustion can exchange heat with the surface of the butane gas tank, and then the surface of the butane gas tank is heated by the hot air. Through the joint action of the heat-conducting element and the heat dissipation element, the normal vaporization of the butane gas in the butane gas tank is enhanced, so that the heating fireplace can be used normally when the ambient temperature is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic structural diagram of a portable heating fireplace using butane gas in the present invention;

[0020] Figure 2 This is a schematic diagram of a portable heating fireplace using butane gas in the present invention when the main body frame is omitted;

[0021] Figure 3 It is a schematic diagram of the internal structure of a portable heating fireplace using butane gas at an angle according to the present invention;

[0022] Figure 4 for Figure 3 Bottom view of the internal structure;

[0023] Figure 5 It is a schematic diagram of the internal structure of the portable heating fireplace using butane gas in the present invention at another angle;

[0024] Figure 6 for Figure 5 A is an enlarged schematic diagram;

[0025] Figure 7 It is a structural schematic diagram of the contoured burner head in the present invention;

[0026] Figure 8 A schematic diagram of the arrangement position of the gas outlet slots on the contoured burner head of the present invention;

[0027] Fig. 9 It is a cross-sectional view of the contoured furnace head of the present invention;

[0028] In the figure: 1-main body frame, 2-handle, 3-knob, 4-contoured burner head, 5-heat conducting element, 501-heat transfer part, 502-arc-shaped part, 6-butane gas tank, 7-main valve, 8-heat dissipation element, 9-air outlet branch pipe, 10-air outlet pipe, 11-temperature sensor, 12-low-fire burner system, 13-ignition needle, 14-anti-dumping switch, 15-flameout protection component, 16-main burner system, 17-metal pipe, 18-screw, 19-small hole, 20-metal wire, 21-internal circulation channel. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide a portable heating fireplace using butane gas to solve the problems existing in the prior art, improve the ornamental value, portability and safety of use, and enable normal use in a relatively low temperature environment.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1-Figure 9As shown, the present embodiment provides a portable heating fireplace using butane gas, comprising a main valve 7, a main frame 1, a closing protection module installed on a base in the main frame 1, and a main burner system 16 installed in the main frame 1. The main valve 7 can be directly connected to the butane gas tank 6. Under the control of the knob 3, the main valve 7 introduces butane gas to the small-fire burner system 12 equipped with the closing protection module and the main burner system 16. During the design, a butane gas tank with popular specifications on the market can be directly used, or the butane gas can be connected through a hose. The main burner system 16 includes a nozzle, an oxygen mixing pipe and a contoured burner head 4 that can be firmly installed in the main frame 1 to ensure the safety and portability of the product. The main frame 1 can protect the circumference of the contoured burner head 4 to improve the protection effect. The main frame 1 can be made of glass, metal plate, metal grille, metal mesh, metal wire frame, etc., and those skilled in the art can select them adaptively according to actual needs to improve the protection effect. A handle 2 is provided at the upper end of the main frame 1. The flame generated when the small-fire burner system 12 is ignited can Ignite the butane gas overflowing from the surface of the shaped burner head 4, and the closing protection module can send a signal to the solenoid valve on the main valve 7 to stop all butane gas supply when it detects flameout or lack of oxygen or when it detects that the main frame 1 has fallen over, thereby playing a flameout protection role, avoiding accidents and reducing the risk of use. At the same time, the main valve 7 and the solenoid valve are designed as an integrated unit; a heat-conducting element 5 is provided in the main frame 1, and the upper end of the heat-conducting element 5 extends to the combustion flame close to the shaped burner head 4, and the lower end of the heat-conducting element 5 is attached to the outer wall of the butane gas tank 6, thereby The element 5 conducts the heat generated by the combustion of the contoured burner head 4 to the surface of the butane gas tank 6 to heat up the surface of the butane gas tank 6. A heat dissipation element 8 is also provided at the lower end of the main body frame 1. When the heat dissipation element 8 is started, the hot air generated by the combustion can exchange heat with the surface of the butane gas tank 6, thereby heating the surface of the butane gas tank 6 through the hot air. Through the joint action of the heat-conducting element 5 and the heat dissipation element 8, the normal vaporization of the butane gas in the butane gas tank 6 is enhanced, so that the heating fireplace can be used normally when the ambient temperature is low (0°C-10°C).

[0033] Specifically, the heat-conducting element 5 is a heat-conducting sheet, which includes a heat transfer portion 501 and an arc portion 502. The upper end of the heat transfer portion 501 extends to the burning flame close to the contoured burner head 4 to conduct the heat generated by the flame combustion to the arc portion 502. The lower end of the heat transfer portion 501 is connected to the upper end of the arc portion 502. The arc portion 502 is attached to the outer wall of the butane gas tank 6, and then the heat is conducted to the butane gas tank 6 through the arc portion 502. The good fit between the arc portion 502 and the butane gas tank 6 improves the heat conduction effect.

[0034] The heat dissipation element 8 is a DC heat dissipation fan, which is powered by connecting a battery box or an external DC power supply. The DC heat dissipation fan is arranged near one end of the butane gas tank 6. After the DC heat dissipation fan is started, the air circulation at the bottom of the main body frame 1 is enhanced, and the hot air is blown onto the butane gas tank 6, thereby assisting and balancing the heat exchange on the surface of the butane gas tank 6, so as to enhance the normal vaporization of the gas in the butane gas tank 6, so that the heating fireplace can be used normally when the ambient temperature is low.

[0035] The shaped burner head 4 can be various decorative shapes such as imitating wood and volcanoes, thereby imitating the effect of flames burning on the shaped burner head 4 of wood or other decorative shapes, and has good ornamental value. An internal flow channel 21 is provided inside the shaped burner head 4 for the circulation of gas. A metal pipe 17 is installed on the shaped burner head 4. The two ends of the metal pipe 17 are respectively connected to one end of the internal flow channel 21 and the outlet pipe 10 on the main valve 7, and then the gas in the butane gas tank 6 is passed into the internal flow channel 21 through the metal pipe 17 and the outlet pipe 10. The outer surface of the shaped burner head 4 is provided with a plurality of grooves. A small hole 19 is opened on the outer surface or in the groove, and the small hole 19 can be connected to the internal circulation channel 21, so that the gas in the internal circulation channel 21 can overflow through the small hole 19 and burn outside the small hole 19 to form the effect of burning on the surface of the profiling burner 4. A metal wire 20 is installed in the groove. The metal wire 20 can withstand high temperatures. The metal wire 20 disperses and mixes oxygen with the gas overflowing from the small hole 19 to make the combustion more complete, thereby reducing the carbon monoxide content in the flue gas emissions. At the same time, the metal wire 20 will be burned red during the combustion process, thereby increasing the combustion atmosphere and the heat radiation heating effect. The shape and fixing method of the profiling burner 4, the size and position of the interface, the size of the small hole 19 and the groove, and the material and size of the embedded metal wire 20 can be adaptively changed according to actual needs.

[0036] The contoured burner head 4 is made of refractory material and only serves to imitate the burning effect of real wood; a screw 18 is installed at the bottom of the contoured burner head 4, and the screw 18 can pass through the bottom plate of the main body frame 1 and be fastened by a nut, thereby fixing the contoured burner head 4 in the main body frame 1 to prevent the contoured burner head 4 from moving when moving and carrying.

[0037] The shutdown protection module includes a flameout protection component 15 and an anti-dumping switch 14. The flameout protection component 15 is an ODS (OXYGRN DEPLETION SENSOR oxygen consumption sensor) protection component, specifically includes a small fire burner system 12, an ignition needle 13 and a temperature sensor 11. The small fire burner system 12 includes a small nozzle, a small oxygen mixing hole and a small fire burner. The ignition needle 13 can generate arc ignition. When the small fire burner is ignited and burned by the ignition needle 13, the temperature sensor 11 can detect the temperature change signal at the small fire burner, thereby reflecting the combustion state at the small fire burner, and sending a signal to the solenoid valve on the main valve 7 when oxygen-deficient combustion is detected. The solenoid valve on the main valve 7 actively closes the butane gas supply at the outlet pipe 10 of the main valve 7 to avoid incomplete combustion due to lack of oxygen and the production of carbon monoxide. The anti-dumping switch 14 can send a signal to the solenoid valve of the main valve 7 when the tilt angle of the main frame 1 is greater than the set angle. The solenoid valve on the main valve 7 closes the butane gas supply of the main valve 7 to the small fire burner and the main burner system 16, which plays a protective role of actively closing the gas flameout when dumping, avoiding accidents and reducing risks.

[0038] The butane gas cylinder 6 is directly installed on the main valve 7. The middle of the outlet pipe 10 of the main valve 7 is connected with an outlet branch pipe 9. The outlet branch pipe 9 is connected to a small-fire burner system 12 to supply butane gas to the small-fire burner system 12. The outlet of the outlet branch pipe 9 is a small-fire burner. When gas is supplied to the small-fire burner, the ignition switch is triggered by pressing the knob 3 of the main valve 7, and the combustion of the small-fire burner is realized through the ignition needle 13. The first end of the outlet pipe 10 is connected to the main valve 7 to realize the supply of gas, and the second end of the outlet pipe 10 is connected to the main valve 7 to realize the supply of gas. The end is connected to the nozzle and the oxygen mixing pipe of the main burner system 16 and then to the contoured burner head 4. When in use, the main valve 7 is opened by rotating the knob 3 of the main valve 7, and the butane gas is supplied to the contoured burner head 4 through the outlet pipe 10, and is supplied to the low-fire burner through the outlet pipe 10 and the outlet branch pipe 9, so as to realize the supply of butane gas. The knob 3 is used to control the supply of butane gas to the low-fire burner, control the ignition of the low-fire burner, control the supply of butane gas to the contoured burner head 4 and adjust the amount of butane gas, so as to realize the active control of the heating effect.

[0039] The temperature sensor 11 is arranged near the edge of the low-fire burner, and when the low-fire burner is ignited, the temperature sensor 11 can detect the temperature change of the edge flame of the low-fire burner to monitor the combustion state of the low-fire burner in real time. When the flame on the low-fire burner ignites the gas overflowing from the shaped burner head 4 and the flame on the surface of the shaped burner head 4 begins to burn, the heating fireplace starts to work. When the flames of the low-fire burner and the main burner system 16 are accidentally extinguished (for example, by wind and rain or blockage of trachea impurities) and the oxygen content of the surrounding air is lower than the safe content for the human body, the temperature around the temperature sensor 11 will change, that is, at this time, the temperature sensor 11 cannot sense the appropriate temperature, and then the temperature sensor 11 sends the detected temperature change signal to the solenoid valve on the main valve 7, and the solenoid valve on the main valve 7 closes all butane gas supplies from the main valve 7 to the main burner system 16 and the low-fire burner. At this time, the low-fire burner and the shaped burner head 4 will be extinguished due to lack of butane gas supply, thereby preventing the risk of butane gas overflow during accidental flameout and the safety risk caused by insufficient oxygen content in the surrounding area, thereby ensuring the safety of use.

[0040] The knob 3 includes an ignition position and a flame adjustment position. The flame adjustment position can infinitely adjust the flame size between off and maximum flame. When the knob 3 is rotated to the ignition position, the main valve 7 can supply butane gas to the low-fire burner system 12 and the contour burner head 4. When the knob 3 is pressed, the ignition switch is triggered to control the ignition needle 13 to ignite the low-fire burner. At the same time, the flame generated by the low-fire burner ignites the gas overflowing from the surface of the contour burner head 4. In this process, the ignition needle 13 obtains voltage to cause an arc to be generated between the ignition needle 13 and the edge of the low-fire burner and ignite the low-fire burner. At the same time, the flame on the low-fire burner ignites the butane gas on the main burner, which plays a role of linkage ignition and realizes the simultaneous ignition of the low-fire burner and the contour burner head 4. By rotating the knob 3 to different flame positions in the flame adjustment position, butane gas of different flow rates is supplied to the contour burner head 4, thereby adjusting the size of the burning flame on the contour burner head 4 to achieve different heating effects.

[0041] The main valve 7 is provided with a solenoid valve, and the main valve 7 has the functions of reducing pressure and regulating. The main valve 7 can receive a signal and automatically close the gas output of the main valve 7 .

[0042] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A portable heating fireplace using butane gas, characterized in that: The invention comprises a main valve, a main body frame, a closing protection module installed on a base in the main body frame, and a main burner system installed in the main body frame. The main valve can be directly connected to a butane gas tank. Under the control of a knob, the main valve introduces butane gas to a small-fire burner system equipped with the closing protection module and the main burner system. The main burner system comprises a nozzle, an oxygen mixing pipe and a contoured burner head that can be firmly installed in the main body frame. The main body frame can protect the circumference of the contoured burner head. The flame generated when the small-fire burner system is ignited can The closing protection module can send a signal to the solenoid valve on the main valve to stop all butane gas supply when flameout or lack of oxygen is detected or when the main body frame is detected to have fallen over; a heat-conducting element is arranged in the main body frame, the upper end of the heat-conducting element extends to the combustion flame close to the shaped burner, the lower end of the heat-conducting element is attached to the outer wall of the butane gas tank, a heat-dissipating element is also arranged at the lower end of the main body frame, and when the heat-dissipating element is started, the hot air generated by the combustion can exchange heat with the surface of the butane gas tank.

2. The portable heating fireplace using butane gas according to claim 1, characterized in that: The heat-conducting element is a heat-conducting sheet, which includes a heat transfer portion and an arc portion. The upper end of the heat transfer portion extends to the burning flame close to the contoured burner head, the lower end of the heat transfer portion is connected to the upper end of the arc portion, and the arc portion is attached to the outer wall of the butane gas tank.

3. The portable heating fireplace using butane gas according to claim 1, characterized in that: The heat dissipation element is a DC heat dissipation fan, which is powered by connecting a battery box or an external DC power supply. The DC heat dissipation fan is arranged close to one end of the butane gas tank.

4. The portable heating fireplace using butane gas according to claim 1, characterized in that: An internal circulation channel is provided inside the shaped burner head, a metal tube is installed on the shaped burner head, two ends of the metal tube are respectively connected to one end of the internal circulation channel and the air outlet pipe of the main valve, a plurality of grooves are provided on the outer surface of the shaped burner head, small holes are provided on the outer surface of the shaped burner head or in the grooves, the small holes can be connected to the internal circulation channel, and a metal wire is installed in the groove.

5. The portable heating fireplace using butane gas according to claim 1, characterized in that: The contoured furnace head is made of refractory material; screws are installed at the bottom of the contoured furnace head, and the screws can pass through the bottom plate of the main body frame and be fastened by nuts.

6. The portable heating fireplace using butane gas according to claim 1, characterized in that: The shutdown protection module includes a flameout protection component and an anti-dumping switch, the flameout protection component includes the low-fire burner system, an ignition needle and a temperature sensor, the low-fire burner system includes a small nozzle, a small oxygen mixing hole and a low-fire burner, when the low-fire burner is ignited and burned by the ignition needle, the temperature sensor can detect the temperature change signal at the low-fire burner, and send a signal to the solenoid valve on the main valve when oxygen-deficient combustion is detected, and the solenoid valve on the main valve actively closes the butane gas supply at the outlet pipe of the main valve, and the anti-dumping switch can send a signal to the solenoid valve of the main valve when the inclination angle of the main frame is greater than the set angle, and the solenoid valve on the main valve closes the butane gas supply of the main valve to the low-fire burner and the main burner system.

7. The portable heating fireplace using butane gas according to claim 6, characterized in that: The butane gas tank is directly installed and connected to the main valve, and an outlet branch pipe is connected to the middle of the outlet pipe of the main valve, and the outlet branch pipe is connected to the low-fire burner system. The outlet of the outlet branch pipe is the low-fire burner. The first end of the outlet pipe is connected to the main valve, and the second end of the outlet pipe is connected to the nozzle and the oxygen mixing pipe of the main burner system and then to the contoured burner head. The main valve is opened by rotating the knob of the main valve, and butane gas is supplied to the contoured burner head through the outlet pipe, and is supplied to the low-fire burner through the outlet pipe and the outlet branch pipe. The knob is used to control the supply of butane gas to the low-fire burner, control the ignition of the low-fire burner, control the supply of butane gas to the contoured burner head, and adjust the amount of butane gas.

8. The portable heating fireplace using butane gas according to claim 7, characterized in that: The temperature sensor is arranged near the edge of the small fire burner, and when the small fire burner is ignited, the temperature sensor can detect the temperature change of the edge flame of the small fire burner. When the flames of the small fire burner and the main burner system are accidentally extinguished and the oxygen content of the surrounding air is lower than the safe content for the human body, the temperature around the temperature sensor will change. The temperature sensor detects the temperature change signal and sends it to the solenoid valve on the main valve. The solenoid valve on the main valve closes all butane gas supplies from the main valve to the main burner system and the small fire burner.

9. The portable heating fireplace using butane gas according to claim 8, characterized in that: The knob includes an ignition position and a flame adjustment position. The flame adjustment position can infinitely adjust the flame size between off and maximum flame. When the knob is rotated to the ignition position, the main valve can supply butane gas to the low-fire burner system and the contoured burner head. When the knob is pressed, the ignition switch is triggered to control the ignition needle to ignite the low-fire burner. By rotating the knob to different flame sizes in the flame adjustment position, different flow rates of butane gas can be supplied to the contoured burner head.

10. The portable heating fireplace using butane gas according to claim 1, characterized in that: The main valve is provided with a solenoid valve, and the main valve has pressure reducing and regulating functions. The main valve can receive a signal and automatically close the gas output of the main valve.

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