Portable gas heating apparatus

Abstract

The present invention relates to the technical field of heating devices, and disclosed is a portable gas heating apparatus. A main gas inlet tube delivers gas to a flame failure protection module and a main burner system under the control of a main valve; the main burner system comprises a nozzle and a profiled burner head capable of being securely mounted in a body frame; the body frame protects the circumference of the profiled burner head; a side interlayer cavity is provided on at least one sidewall of the body frame; a top interlayer cavity is provided at the top of the body frame; the lower end of the side interlayer cavity and an exhaust port of the top interlayer cavity are communicated with the outside; the side interlayer cavity is communicated with the top interlayer cavity; when a pilot burner system is ignited by an ignition needle and burns stably, a temperature sensor transmits a signal to the main valve, the main valve controls the main gas inlet tube to supply the gas to the main burner system, and flame on the pilot burner system ignites the gas overflowing from the surface of the profiled burner head; and a tilt safety switch is configured to transmit, when the body frame is detected to be tilted, a signal to the main valve to stop all gas supply. The present invention can improve use safety and is easily portable.

Description

A portable gas heating device Technical Field

[0001] This invention relates to the field of heating equipment technology, and in particular to a portable gas heating device. Background Technology

[0002] Traditional tabletop gas heaters or braziers cannot achieve the same visual appeal as real fireplaces, and their tops and sides cannot be effectively protected. The handles and outer frames cannot reach the temperature requirements of portable heaters. Furthermore, traditional gas heating equipment has safety deficiencies and poses certain risks during use. Summary of the Invention

[0003] The purpose of this invention is to provide a portable gas heating device to solve the problems existing in the prior art, improve its aesthetics and safety, and make it easy to carry.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a portable gas heating device, including an inlet main pipe, a main frame, a flameout protection module and an anti-tipping switch mounted on a base within the main frame, and a main burner system mounted within the main frame. The inlet main pipe is used to connect to a gas cylinder and can supply gas to the flameout protection module and the main burner system under the control of a main valve. The main burner system includes a nozzle, an oxygen mixing pipe, and a conformal burner head that can be securely mounted within the main frame. The main frame can provide circumferential protection for the conformal burner head, and at least one side wall of the main frame has a side cavity, and the top of the main frame has a top cavity. The lower end of the side cavity communicates with the outside. The upper end of the side interlayer cavity is connected to the air inlet of the top interlayer cavity, and the exhaust port of the top interlayer cavity is connected to the outside. The flameout protection module includes a small burner system, an ignition needle, and a temperature sensor. The small burner system includes a small nozzle, a small oxygen mixing hole, and a small burner. When the small burner system is ignited by the ignition needle and burns stably, the temperature sensor detects a temperature signal and transmits it to the solenoid valve on the main valve. The solenoid valve on the main valve controls the main air intake pipe to supply gas to the main burner system. The flame on the small burner system can ignite the gas overflowing from the surface of the contoured furnace head. The anti-tipping switch can send a signal to the solenoid valve on the main valve to stop all gas supply when the main frame is detected to be tilted.

[0006] Preferably, the shaped burner head has an internal flow channel, a metal tube is installed on the shaped burner head, the two ends of the metal tube are respectively connected to one end of the internal flow channel and the main air inlet pipe, the outer surface of the shaped burner head has a number of grooves, and the outer surface of the shaped burner head or the grooves have small holes that can connect to the internal flow channel, and metal wires are installed in the grooves.

[0007] Preferably, the shaped furnace head is made of refractory material; the bottom of the shaped furnace head is fitted with screws that can pass through the bottom plate of the main body frame and be fastened with nuts.

[0008] Preferably, at least one sidewall of the main body frame is a non-closed sidewall, and the area of ​​the non-closed portion of the non-closed sidewall accounts for at least 30% of the area of ​​the non-closed sidewall.

[0009] Preferably, the thickness of both the side interlayer cavity and the top interlayer cavity is between 5mm and 50mm.

[0010] Preferably, the first end of the main intake pipe is connected to the gas cylinder, the second end of the main intake pipe is connected to the intake port of the main valve, the first outlet of the main valve is connected to the intake port of the stub burner gas pipe of the stub burner system, the outlet of the stub burner gas pipe of the stub burner system is the stub burner, and the second outlet of the main valve is connected in sequence to the nozzle and the oxygen mixing pipe of the main burner system and then to the contour burner head. When the stub burner is burning stably, the temperature sensor on the flameout protection module detects a stable signal and transmits it to the solenoid valve on the main valve. The solenoid valve on the main valve opens the gas supply restriction of the main burner system. By rotating the knob of the main valve, gas is supplied to the contour burner head, and the gas overflows onto the surface of the contour burner head and is ignited by the flame of the stub burner. The knob is used to control the gas supply to the stub burner, control the ignition of the stub burner, control the gas supply to the contour burner head of the main burner system, and adjust the gas volume.

[0011] Preferably, the temperature sensor is located near the edge of the smoldering burner. When the smoldering burner is ignited, the temperature sensor can detect the temperature of the edge flame of the smoldering burner. When a stable temperature signal is detected, the sensor releases the restriction on the solenoid valve on the main valve, and the knob on the main valve is rotated to supply gas to the conformal burner head of the main burner system. When the flames of the smoldering burner and the main burner system are accidentally extinguished or the oxygen content of the surrounding air is lower than the safe level for human use, 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 then closes all gas supply from the main valve to the main burner system and the smoldering burner.

[0012] Preferably, the anti-tipping switch can send a signal to the solenoid valve of the main valve when the tilt angle of the main body frame is greater than a set angle, and the solenoid valve on the main valve closes the gas supply from the main valve to the pilot burner and the main burner system.

[0013] Preferably, the knob includes an ignition position and a high / low flame adjustment position. When the knob is rotated to the ignition position, the main valve can supply gas to the low flame burner system. When the knob is pressed, the ignition switch is activated to control the ignition needle to ignite the low flame burner. After the temperature sensor senses the stable flame temperature on the low flame burner, it transmits a signal to the solenoid valve on the main valve. After receiving the signal, the solenoid valve on the main valve opens the main valve to restrict the gas supply to the main burner system. By rotating the knob to the low or high flame position, different flow rates of gas are supplied to the contour burner head of the main burner system.

[0014] Preferably, a pressure reducing valve is installed on the main frame, the outlet of the pressure reducing valve is connected to the main inlet pipe, the inlet port of the pressure reducing valve can be directly installed with a portable small gas cylinder, and the inlet port of the pressure reducing valve can also be connected to other gas cylinders or gas sources through an external pipe.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] The portable gas heating device provided by this invention has an inlet main pipe for connecting to a gas cylinder, facilitating the dispensing of gas from the cylinder into a small-fire combustion system and a main burner system. The main burner system includes a nozzle, an oxygen mixing pipe, and a conformal burner head that can be securely installed within the main frame, ensuring product safety and portability. The main frame provides circumferential protection for the conformal burner head, enhancing its protective effect. At least one side wall of the main frame has a side cavity, and the top of the main frame has a top cavity. The lower end of the side cavity communicates with the outside, and the upper end of the side cavity communicates with the air inlet of the top cavity. The exhaust port of the top cavity communicates with the outside. Therefore, when the main burner system is burning for heating, there is a significant temperature difference between the upper and lower parts of the main frame, causing heated air to flow from the lower temperature area to the higher temperature area. The automatic airflow is activated to cool the main frame, achieving the required temperature for the outer frame of the portable gas heating device. The flameout protection module includes a small burner system, an ignition needle, and a temperature sensor. The small burner system consists of a small nozzle, a small oxygen mixing orifice, and a small burner. When the small burner system is ignited and burns stably by the ignition needle, the temperature sensor detects the temperature signal and transmits it to the solenoid valve on the main valve. The solenoid valve on the main valve controls the main air intake pipe to supply gas to the main burner system. The flame on the small burner system can ignite the gas overflowing from the surface of the shaped burner head, achieving safe ignition. The anti-tilt switch can send a signal to the solenoid valve on the main valve to stop all gas supply when the main frame is detected to be tilted, thereby achieving flameout protection, avoiding accidents and reducing risks. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 is a structural schematic diagram of the portable gas heating device of the present invention at one angle;

[0019] Figure 2 is a structural schematic diagram of the portable gas heating device of the present invention from another angle;

[0020] Figure 3 is a schematic diagram of the installation position of the main burner system in this invention;

[0021] Figure 4 is a schematic diagram of the flameout protection module and the main burner system in this invention;

[0022] Figure 5 is a schematic diagram of the circuit connection in this invention;

[0023] Figure 6 is a schematic diagram of the contour-following furnace head in this invention;

[0024] Figure 7 is a schematic diagram showing the arrangement of the gas outlet grooves on the contoured furnace head in this invention;

[0025] Figure 8 is a cross-sectional view of the contour-following furnace head in this invention;

[0026] In the diagram: 1-Main frame, 2-Handle, 3-Fuel compartment, 4-Knob, 5-Top interlayer cavity, 6-Side interlayer cavity, 7-Shaped burner head, 8-Temperature sensor, 9-Temperature burner system, 10-Ignition needle, 11-Pressure reducing valve, 12-Inlet main pipe, 13-Main burner system, 14-Main valve, 15-Solenoid valve, 16-Main burner gas pipe, 17-Temperature burner gas pipe, 18-Flameout protection module, 19-Anti-tipping switch, 20-Metal pipe, 21-Screw, 22-Small hole, 23-Metal wire, 24-Internal flow channel. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The purpose of this invention is to provide a portable gas heating device to solve the problems existing in the prior art, improve its aesthetics and safety, and make it easy to carry.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] As shown in Figures 1-8, this embodiment provides a portable gas heating device, including an inlet main pipe 12, a main frame 1, a flameout protection module 18 and an anti-tipping switch 19 installed on a base inside the main frame 1, and a main valve 14 installed inside the main frame 1. The inlet main pipe 12 is used to connect to a gas cylinder, thereby facilitating the flow of gas from the gas cylinder through the main valve 14 into the pilot burner system 9 and the main burner system 13. The main burner system 13 includes a nozzle, an oxygen mixing pipe, and a secure mounting mechanism. The conformal burner head 7, housed within the main frame, ensures its safety and prevents movement during transport. The main frame 1 provides circumferential protection for the conformal burner head 7, using materials such as glass, metal plates, metal grilles, metal mesh, and metal frames. Those skilled in the art can adapt these materials to their specific needs to enhance the protective effect. At least one side wall of the main frame 1 is provided with a side cavity 6, and a top cavity 5 is provided on the top of the main frame 1. The lower end of the side cavity 6 communicates with the outside, and the upper end of the side cavity 6 is connected to the air inlet of the top cavity 5. The exhaust port of the top interlayer cavity 5 is connected to the outside, so that when the conformal burner head 7 is used for combustion and heating, there is a large temperature difference between the upper and lower parts of the main frame. This causes the heated air to flow from the low temperature area to the high temperature area, realizing automatic air flow to cool down the outer frame of the product and meet the temperature requirements of the outer frame during use. The flameout protection module 18 includes a small burner system 9, an ignition needle 10, and a temperature sensor 8. The small burner system 9 includes a small nozzle, a small oxygen mixing hole, and a small burner. The small burner system 9 is ignited by the ignition needle 10. When combustion is stable, the temperature sensor 8 detects the temperature signal and transmits it to the solenoid valve 15 on the main valve 14. The main valve 14 controls the gas supply to the conformal burner head 7 via the knob 4 through the main gas inlet pipe 12. The flame on the small flame burner system 9 can ignite the gas overflowing from the surface of the conformal burner head 7, thus playing a role in safe ignition. The anti-tipping switch 19 can send a signal to the solenoid valve 15 on the main valve 14 to stop all gas supply when it detects that the main frame 1 is tilted to a set angle, thus playing a role in flameout protection, avoiding accidents and reducing risks.

[0031] Specifically, the shaped burner head 7 can be made in various decorative shapes such as wood and volcanoes, thus mimicking the effect of flames burning on wood or other decorative shapes, providing good aesthetics. The shaped burner head 7 has an internal circulation channel 24 for gas flow. A metal pipe 20 is installed on the shaped burner head 7, with both ends of the metal pipe 20 connected to one end of the internal circulation channel 24 and the main gas inlet pipe 12, respectively. Gas from the gas tank is then introduced into the internal circulation channel 24 through the metal pipe 20 and the main gas inlet pipe 12. Several grooves are formed on the outer surface of the shaped burner head 7. Small holes 22 are opened on the outer surface or in the groove. The small holes 22 can connect to the internal circulation channel 24, so that the gas in the internal circulation channel 24 can overflow through the small holes 22 and burn outside the small holes 22, so as to form the effect of burning on the surface of the shaped burner head 7. A metal wire 23 is installed in the groove. The metal wire 23 can withstand high temperature. The metal wire 23 disperses and mixes the gas overflowing from the small holes 22, so that the combustion is more complete, thereby reducing the carbon monoxide content in the flue gas emission. At the same time, the metal wire 23 will be heated red during the combustion process, thereby increasing the combustion atmosphere and increasing the heat radiation heating effect.

[0032] The shaped burner head 7 is made of refractory material and serves only to mimic the burning effect of real wood.

[0033] The bottom of the contour burner head 7 is equipped with screws 21. The screws 21 can pass through the bottom plate of the main body frame 1 and be fastened with nuts, thereby fixing the contour burner head 7 inside the main body frame 1 and preventing the contour burner head 7 from moving during movement and carrying.

[0034] At least one sidewall of the main frame 1 is an open sidewall, and the area of ​​the open portion of the open sidewall accounts for at least 30% of the open sidewall area. This allows for observation of the combustion flame on the surface of the shaped burner head 7 while facilitating air circulation between the main frame 1 and the outside environment. In other words, it facilitates the effective entry of outside air into the main frame 1 to improve combustion efficiency, and also facilitates the discharge of heat generated during combustion to the outside environment. A handle 2 is provided at the upper end of the main frame 1.

[0035] The thickness of both the side cavity 6 and the top cavity 5 is between 5mm and 50mm, so that air can flow effectively within them, thereby achieving heat dissipation. The side cavity 6 and the top cavity 5 of the main frame 1 may also have other air inlet or outlet slots, and the side cavity 6 and the top cavity 5 may have various shapes.

[0036] The flameout protection module 18 is an ODS (Oxygen Consumption Sensor) protection module. The first end of the main intake pipe 12 is connected to the gas cylinder, and the second end is connected to the intake port of the main valve 14. This allows gas from the gas cylinder to be supplied to the main valve 14 via the main intake pipe 12. When the knob 4 of the main valve 14 is rotated to the ignition position, the pilot burner system 9, including a small nozzle, a small oxygen mixing pipe, and a pilot burner, is activated. The first outlet of the main valve 14 is connected to the pilot burner via the pilot burner gas pipe 17 of the pilot burner system 9 to supply gas to the pilot burner. The gas is discharged through the small nozzle of the pilot burner. The second outlet of the main valve 14 is connected sequentially to the nozzle and oxygen mixing pipe of the main burner system 13, and then to the contour burner head 7. When gas is supplied to the pilot burner, the gas is discharged through the small nozzle of the pilot burner. Pressing the knob 4 of the main valve 14 activates the ignition switch, and the ignition needle 10 ignites the small flame burner. The temperature sensor 8 on the flameout protection module 18 senses a stable temperature signal and sends a signal to the solenoid valve 15 on the main valve 14. The solenoid valve 15 opens the restriction of the second gas outlet of the main valve 14. Rotating the knob 4 on the main valve 14 to the small flame or large flame position, the main valve 14 supplies gas to the contour burner 7 through the main burner gas pipe 16 of the main burner system 13 and overflows. The gas overflowing from the surface of the contour burner 7 is ignited by the flame on the small flame burner, achieving safe ignition and combustion. The knob 4 is used to control the gas supply to the small flame burner, activate the ignition switch to energize the ignition needle 10 for ignition, control the gas supply to the contour burner 7, and adjust the gas supply amount.

[0037] Temperature sensor 8 is located near the edge of the pilot burner. When the pilot burner is ignited, temperature sensor 8 can detect the temperature of the pilot burner. When a stable high temperature signal is detected (at which time the pilot burner is burning stably), the solenoid valve 15 opens the restriction on the main valve 14, and the gas is turned on by knob 4. The gas is supplied to the contour burner head 7 through the main burner gas pipe 16 of the main burner system 13. The flame on the pilot burner ignites the gas overflowing from the contour burner head 7 and the flame on the surface of the contour burner head 7 begins to burn, and the device starts to work. When the flame on the pilot burner or the contour burner head 7 is accidentally extinguished (e.g., by wind or rain), or when the oxygen content in the surrounding air is lower than the safe oxygen content required by the human body, temperature sensor 8 detects the temperature change and sends a signal to the solenoid valve 15 on the main valve 14. The solenoid valve 15 controls the main valve 14 to actively shut off all gas supply. At this time, the pilot burner and the contour burner head 7 will have no gas supply and will go out, thereby preventing the risk of gas overflow and the safety risk caused by insufficient surrounding oxygen content in the event of accidental flameout, ensuring the safety of use.

[0038] When the main frame 1 is tilted to an angle greater than a set angle, the anti-tipping switch 19 sends an angle signal to the solenoid valve 15 on the main valve 14, and controls the main valve 14 to shut off all gas supply through the solenoid valve 15, thus playing a protective role of actively shutting off the gas flame when tilting.

[0039] Knob 4 includes an ignition position and a flame size adjustment position. When knob 4 is rotated to the ignition position, the main valve 14 can control the gas supply to the pilot burner system 9. When knob 4 is pressed, the main valve 14 can trigger the ignition switch to control the ignition needle 10 to ignite the pilot burner. When the flame of the pilot burner and the main burner system 13 is accidentally extinguished or the oxygen content of the surrounding air is lower than the safe level for the human body, the temperature around the temperature sensor 8 will change. After sensing the stable flame temperature on the pilot burner, the temperature sensor 8 transmits a signal to the solenoid valve 15 on the main valve 14. After receiving the signal, the solenoid valve 15 opens the gas supply restriction on the main valve 14 to the contour burner 7. By rotating knob 4 to different positions in the flame size adjustment position, the amount of gas supplied to the contour burner 7 can be adjusted, thereby adjusting the size of the flame on the contour burner 7.

[0040] A pressure reducing valve 11 is installed on one side of the main frame 1. The outlet of the pressure reducing valve 11 is connected to the main inlet pipe 12. The inlet port on the pressure reducing valve 11 can be directly installed with a portable small gas cylinder. The inlet port of the pressure reducing valve 11 can also be connected to other gas cylinders or gas sources through an external pipe, thereby achieving the portability of this embodiment.

[0041] A fuel tank 3 is installed on one side of the main frame 1, and the fuel tank 3 is used to place the gas cylinder.

[0042] Through the above design, the overall weight of this embodiment is less than 20kg (net weight excluding gas cylinder and packaging), making it easy to carry. It can use commonly available gas cylinder sizes, offers noticeable aesthetic appeal and heating effect, and meets relevant market safety regulations. Furthermore, the portable gas heating device provided in this embodiment can be adapted to meet specific needs in terms of the burner head shape and fixing method, the size and position of each interface, the dimensions of the small hole 22 and the gas outlet groove, and the material and size of the metal wire 23. The gas can be propane, butane, or a mixture of propane and butane.

[0043] Figure 5 shows a circuit connection diagram of the flameout protection module 18 in this embodiment. The dashed line represents the pulse valve micro switch control pulse power supply circuit, the single-dot dashed line represents the ignition circuit from the pulse power supply to the ignition needle 10, and the double-dot dashed line represents the series circuit from the flameout protection module 18 to the anti-tipping switch 19 to the solenoid valve 15.

[0044] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A portable gas heating device, characterized in that: The system includes an intake manifold, a main frame, a flameout protection module and an anti-tipping switch mounted on a base within the main frame, and a main burner system mounted within the main frame. The intake manifold connects to a gas cylinder and, under the control of a main valve, supplies gas to the flameout protection module and the main burner system. The main burner system includes nozzles, an oxygen mixing pipe, and a conformal burner head securely mounted within the main frame. The main frame provides circumferential protection for the conformal burner head. At least one side wall of the main frame has a side cavity, and the top of the main frame has a top cavity. The lower end of the side cavity communicates with the outside, and the upper end of the side cavity connects with... The air inlet of the top interlayer cavity is connected, and the exhaust port of the top interlayer cavity is connected to the outside. The flameout protection module includes a small burner system, an ignition needle, and a temperature sensor. The small burner system includes a small nozzle, a small oxygen mixing hole, and a small burner. When the small burner system is ignited by the ignition needle and burns stably, the temperature sensor detects a temperature signal and transmits it to the solenoid valve on the main valve. The solenoid valve on the main valve controls the main air intake pipe to supply gas to the main burner system. The flame on the small burner system can ignite the gas overflowing from the surface of the contoured furnace head. The anti-tipping switch can send a signal to the solenoid valve on the main valve to stop all gas supply when the main frame is detected to be tilted.

2. The portable gas heating device according to claim 1, characterized in that: The shaped burner head has an internal flow channel inside, and a metal tube is installed on the shaped burner head. The two ends of the metal tube are respectively connected to one end of the internal flow channel and the main air inlet pipe. Several grooves are opened on the outer surface of the shaped burner head, and small holes are opened on the outer surface of the shaped burner head or in the grooves. The small holes can connect to the internal flow channel, and metal wires are installed in the grooves.

3. The portable gas heating device according to claim 2, characterized in that: The shaped furnace head is made of refractory material; the bottom of the shaped furnace head is fitted with screws that can pass through the bottom plate of the main body frame and be fastened with nuts.

4. The portable gas heating device according to claim 1, characterized in that: At least one sidewall of the main frame is a non-closed sidewall, and the area of ​​the non-closed portion of the non-closed sidewall accounts for at least 30% of the area of ​​the non-closed sidewall.

5. The portable gas heating device according to claim 1, characterized in that: The thickness of both the side interlayer cavity and the top interlayer cavity is between 5mm and 50mm.

6. The portable gas heating device according to claim 1, characterized in that: The first end of the main intake pipe is connected to the gas cylinder, and the second end of the main intake pipe is connected to the intake port of the main valve. The first outlet of the main valve is connected to the intake port of the stun burner gas pipe of the stun burner system. The outlet of the stun burner gas pipe of the stun burner system is the stun burner. The second outlet of the main valve is connected in sequence to the nozzle and oxygen mixing pipe of the main burner system and then to the contour burner head. When the stun burner is burning stably, the temperature sensor on the flameout protection module detects a stable signal and transmits it to the solenoid valve on the main valve. The solenoid valve on the main valve opens the gas supply restriction of the main burner system. By rotating the knob of the main valve, the main valve is opened to supply gas to the contour burner head, and the gas overflows onto the surface of the contour burner head and is ignited by the flame of the stun burner. The knob is used to control the gas supply to the stun burner, control the ignition of the stun burner, control the gas supply to the contour burner head of the main burner system, and adjust the gas volume.

7. The portable gas heating device according to claim 6, characterized in that: The temperature sensor is located near the edge of the smoldering burner. When the smoldering burner is ignited, the temperature sensor can detect the temperature of the edge flame of the smoldering burner. When a stable temperature signal is detected, the solenoid valve on the main valve is released from its restriction, and the knob on the main valve is rotated to supply gas to the conformal burner head of the main burner system. When the flame of the smoldering burner and the main burner system is accidentally extinguished or the oxygen content of the surrounding air is lower than the safe level for human use, 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 then closes all gas supply from the main valve to the main burner system and the smoldering burner.

8. The portable gas heating device according to claim 7, characterized in that: The anti-tipping switch can send a signal to the solenoid valve of the main valve when the tilt angle of the main body frame is greater than a set angle. The solenoid valve on the main valve then shuts off the gas supply from the main valve to the pilot burner and the main burner system.

9. The portable gas heating device according to claim 8, characterized in that: The knob includes an ignition position and a high / low flame adjustment position. When the knob is rotated to the ignition position, the main valve can supply gas to the low flame burner system. When the knob is pressed, the ignition switch is activated to control the ignition needle to ignite the low flame burner. After the temperature sensor senses the stable flame temperature on the low flame burner, it transmits a signal to the solenoid valve on the main valve. After receiving the signal, the solenoid valve on the main valve opens the main valve to restrict the gas supply to the main burner system. By rotating the knob to the low or high flame position, different flow rates of gas are supplied to the contour burner head of the main burner system.

10. The portable gas heating device according to claim 1, characterized in that: A pressure reducing valve is installed on the main frame. The outlet of the pressure reducing valve is connected to the main inlet pipe. The inlet port of the pressure reducing valve can be directly installed with a portable small gas cylinder. The inlet port of the pressure reducing valve can also be connected to other gas cylinders or gas sources through an external pipe.

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