Warmer

Abstract

The warmer comprises a shell, a combustor, a gas tank and a gas path, the combustor and the gas path are both fixed to the shell, the combustor communicates with the gas tank through the gas path, and gas in the gas tank is conveyed to the combustor through the gas path. Fuel gas located in the combustor is combusted when the combustor works, and heat exchange exists between the combustor and the gas tank. The pressure fluctuation of the gas tank is small.

Description

Technical Field

[0001] This application relates to the field of heating technology, and more specifically, in particular to a heater. Background Technology

[0002] A heater is a device used for heating. Heaters typically use gas combustion for heating. Generally, the gas is stored in a gas cylinder, which is in a liquid state at room temperature to maximize its storage capacity. During use, the gas in the cylinder needs to change from liquid to gas, a process that absorbs a significant amount of heat, causing the cylinder's temperature to drop. According to the ideal gas law (PV = nRT), this temperature decrease leads to a drop in pressure within the cylinder, consequently reducing the saturated vapor pressure of the liquid gas. When the pressure is insufficient, the gas cannot be effectively ejected, resulting in insufficient supply and causing the heater's flame or temperature to become smaller and more unstable. Utility Model Content

[0003] The purpose of this application is to address the shortcomings of the prior art and propose a heater with stable gas tank pressure.

[0004] To achieve the above objectives, this application proposes a heater, including a housing, a burner, a gas tank, and a gas passage. The burner and the gas passage are both fixed to the housing. The burner is connected to the gas tank through the gas passage. Gas gas in the gas tank is transported to the burner through the gas passage. The gas gas located in the burner is burned when the burner is working. There is heat exchange between the burner and the gas tank.

[0005] The heater includes a heat conduction device, through which the burner exchanges heat with the gas tank; or, the outer casing is provided with an airflow channel, through which the burner exchanges heat via heat convection; or, the gas emits heat radiation when burning at the burner, and the heat radiation emitted at the burner comes into contact with the gas tank, through which the burner exchanges heat with the gas tank.

[0006] The heat conduction device includes a heat-conducting element that connects the burner and the gas cylinder.

[0007] The heat-conducting component includes a hot part and a cold part. The hot part is fixed to and in contact with the burner, and the cold part is detachably connected to and in contact with the gas tank; or, the hot part is fixed to the burner and exchanges heat, and the cold part is detachably connected to the gas tank and exchanges heat.

[0008] The burner has a rear end and a side end. The surface of the hot part is adapted to the surface of the rear end, and the hot part contacts or exchanges heat with the rear end surface; or, the hot part is adapted to the surface of the side end, and the hot part contacts or exchanges heat with the side end surface; or, the hot part contacts or exchanges heat with both the side end and the rear end simultaneously.

[0009] The profile of the cooling section is adapted to the side profile of the gas tank, and the middle and lower parts of the gas tank are in surface contact or heat exchange with the cooling section.

[0010] The contact area between the hot part and the rear end is greater than or equal to one-quarter of the surface area of ​​the rear end; or, the contact area between the hot part and the side end is greater than or equal to one-quarter of the surface area of ​​the side end; or, the contact area between the cold part and the side surface of the gas tank is greater than or equal to one-eighth of the surface area of ​​the side surface of the gas tank.

[0011] The heat conduction device further includes a fixing member, the profile of which is adapted to the side profile of the gas tank, and the profile of the cooling part is adapted to the side profile of the gas tank. The fixing member and the cooling part surround the gas tank.

[0012] One end of the fixing member is rotatably connected to the heat-conducting member, and the other end of the fixing member is detachably connected to the heat-conducting member; or, both ends of the fixing member are detachably connected to the heat-conducting member.

[0013] The heat conduction device includes an extension plate and thermally conductive silicone. One end of the extension plate is in contact with the surface of the heat-conducting component, and the other end of the extension plate is in contact with the surface of the fixing component. Thermally conductive silicone can be filled between the hot part and the burner, between the cold part and the gas tank, and between the extension plate and the heat-conducting component.

[0014] Beneficial effects:

[0015] As can be seen from the above technical solutions, this application has the following advantages compared with the prior art:

[0016] 1. The burner and the gas tank exchange heat. When the temperature of the gas tank drops due to use, the heat from the burner is transferred to the gas tank to maintain the temperature of the gas tank or slow down the degree of temperature drop, thereby stabilizing the internal pressure of the gas tank or reducing the degree of pressure fluctuation inside the gas tank.

[0017] 2. Heat exchange is carried out at the rear or side of the burner through a heat conduction device, which can improve the heat exchange efficiency between the burner and the gas tank and avoid safety hazards caused by excessive gas tank temperature.

[0018] 3. The cold part and the gas tank are in surface contact, and the hot part and the burner are in surface contact, which improves the heat exchange efficiency between the heat-conducting components and the burner, as well as the heat exchange efficiency between the heat-conducting components and the gas tank.

[0019] 4. Install fixing components. The fixing components and the cold part surround the gas tank together, which can improve the heat exchange efficiency between the heat conduction components and the gas tank, and also improve the stability of the gas tank. Attached Figure Description

[0020] Figure 1 This is a three-dimensional assembly diagram of a heater according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the internal structure assembly of a heater according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the burner, heat transfer assembly and gas tank assembly according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of a burner structure according to an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the heat-conducting component structure according to an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of a burner, heat transfer assembly, and gas cylinder assembly according to another embodiment of this application.

[0026] Figure label:

[0027] 1-Outer shell; 11-Airflow channel; 12-Temperature regulator; 2-Burner; 21-Front end; 22-Rear end; 23-Side end; 3-Gas tank; 4-Heat transfer device; 41-Heat conduction component; 411-Hot part; 412-Cold part; 42-Fixed component; 43-Extension plate; 5-Gas passage; 51-Pressure regulator. Detailed Implementation

[0028] The embodiments of this application will now be clearly and completely described with reference to the accompanying drawings.

[0029] Please refer to Figures 1 to 6 As shown, a heater according to this application includes a shell 1, a burner 2, a gas tank 3 and a gas passage 5. The burner 2, the gas tank 3 and the gas passage 5 are all fixed to the shell 1. The gas passage 5 connects the burner 2 and the gas tank 3. The gas in the gas tank 3 is transported to the burner 2 through the gas passage 5. The gas can be ignited and burned at the burner 2. When the burner 2 is working, the gas burns at the burner 2.

[0030] The burner 2, gas tank 3, and gas passage 5 can be directly fixed to the outer casing 1, and the fixing methods include, but are not limited to, snap-fit, screw-fit, and welding. Alternatively, the burner 2, gas tank 3, and gas passage 5 can be indirectly fixed to the outer casing 1, such as through connectors. In this embodiment, the gas passage 5 is fixed to the outer casing 1, and the gas tank 3 is fixed to the outer casing 1 via the gas passage 5. Specifically, the gas tank 3 is detachably connected to the heater, allowing the user to easily replace the gas tank 3 when the gas supply is low or exhausted. The gas passage 5 is equipped with a pressure regulating valve 51, and the interface of the gas tank 3 is compatible with the pressure regulating valve 51, allowing the gas tank 3 interface to be installed on the pressure regulating valve 51. This method fixes the gas tank 3 and the gas passage 5 together, thereby fixing the gas tank 3 and the outer casing 1 together via the gas passage 5. Other structures can also be installed on the outer casing 1 to further secure the gas tank 3.

[0031] The outer casing 1 has a front wall, a rear wall, an upper wall, a lower wall, and two side walls. The front wall faces the front of the outer casing 1, which in turn faces the direction to be heated, typically towards the user or the object to be heated. The front and rear walls are positioned opposite each other, and similarly, the rear wall of the outer casing 1 faces the rear of the outer casing 1. The upper, lower, rear, and two side walls can all be used for the internal structure and components of the heater. Handles can also be provided on the upper and side walls for easy movement of the heater. The lower wall of the outer casing 1 has feet that support the entire heater. Grooves are provided on the feet or the lower wall to provide friction surfaces and improve the stability of the outer casing 1 when placed.

[0032] The heater includes a temperature regulator 12, which adjusts the gas flow rate by regulating the gas valve on the gas passage 5, thereby regulating the operating temperature of the burner 2. The gas passage 5 can be fixed to the upper wall or side wall, and is fixed to the upper wall or side wall of the outer casing 1 via a connector to stabilize the gas passage 5. The temperature regulator 12 is fixed to the upper wall for easy user adjustment. The pressure regulating valve 51 is directly fixed to the upper wall or fixed to the upper wall via a connector, with the port of the pressure regulating valve 51 facing downwards for easy disassembly and installation of the gas tank 3. After the gas tank 3 port and the pressure regulating valve 51 are connected, the gas tank 3 port faces upwards, reducing the possibility of liquid gas overflowing the gas tank 3 port.

[0033] The burner 2 has a front end 21, a rear end 22, and two side ends 23. The gas is ignited at the front end 21 of the burner 2. The front end 21 of the burner 2 faces the same direction as the front of the outer casing 1, so that the hot gas flow or heat radiation is directed towards the front of the outer casing 1. The rear end 22 of the burner 2 is positioned opposite to the rear wall of the outer casing 1. Specifically, the front end 21 of the burner 2 faces the front of the outer casing 1, and the rear end 22 of the burner 2 faces the rear wall of the outer casing 1.

[0034] When both the gas canister 3 and the burner 2 are fixed to the outer casing 1, the burner 2 is partially or entirely located inside the outer casing 1, and the gas canister 3 is partially or entirely located inside the outer casing 1. In this embodiment, both the burner 2 and the gas canister 3 are located inside the outer casing 1. Specifically, the gas canister 3 can be located between the burner 2 and the side wall of the outer casing 1, between the burner 2 and the rear wall, or at the corner where the rear wall and the side wall connect. In this embodiment, the gas canister 3 is located behind the burner 2, that is, between the burner 2 and the rear wall. On the one hand, the rear wall can be used to protect the gas canister 3; on the other hand, the space between the burner 2 and the rear wall is fully utilized. The gas canister 3 is not placed in front of the burner 2, avoiding the possibility of high-intensity heat radiation reaching the gas canister 3, thereby improving the safety of using the gas canister 3.

[0035] The front end 21 of the burner 2 is fixed to the front wall, or part or all of the upper wall, side wall, and lower wall of the outer casing 1 are fixed to the front end 21 of the burner 2; part or all of the upper wall, side wall, and lower wall of the outer casing 1 are fixed to the side end 23 of the burner 2. In this embodiment, the front end 21 of the burner 2 is fixed to the front wall of the outer casing 1, the side end 23 or part of the rear end 22 of the burner 2 is fixedly connected to the side wall or upper wall of the outer casing 1 through a connector, and the lower wall of the outer casing 1 supports the burner 2 through a lower wall structure or a connector. Fixing the burner 2 at multiple angles improves the stability of the burner 2.

[0036] When the gas is ignited in burner 2, i.e., when burner 2 is working, burner 2 outputs a large amount of heat to its front end 21, i.e., to the front of the outer casing 1, for user use. When burner 2 is fixed to the outer casing 1, there is a gap or airflow channel 11 at the connection between burner 2 and outer casing 1. The gap or airflow channel 11 connects the air near the front end 21 of burner 2 and the air near the rear end 22 of burner 2. When gas tank 3 is in use, the air temperature drops, further reducing the temperature of the air near the rear end 22 of burner 2. Due to the temperature difference between the air at the front end 21 and the air at the rear end 22 of burner 2, cold air flows from the rear end 22 to the front end 21 of burner 2, accelerating the airflow near gas tank 3 and reducing the rate at which the temperature of gas tank 3 drops. That is, the thermal convection of the gas channel can balance the temperature near burner 2 and the temperature near gas tank 3. Gas tank 3 and burner 2 exchange heat through the thermal convection of airflow channel 11. The existence of the gas channel has the function of stabilizing the pressure of the gas inside gas tank 3 and the flame of burner 2. It is understandable that the temperature of the rear end 22 and the side end 23 of the burner 2 is higher than that of the gas tank 3. The space between the rear end 22 and the gas tank 3 is the airflow channel 11. The rear end 22 and the gas tank 3 undergo thermal convection, and the side end 23 and the gas tank 3 undergo thermal convection, thereby realizing heat exchange between the burner 2 and the gas tank 3.

[0037] The heater is equipped with a heat transfer device 4, through which the burner 2 exchanges heat with the gas tank 3. Specifically, the heat transfer device 4 includes a heat-conducting element 41. One end or side of the heat-conducting element 41 is close to or connected to the burner 2, and the other end or side of the heat-conducting element 41 is close to or connected to the gas tank 3. The side of the heat-conducting element 41 close to the burner 2 is the hot part 411, and the side of the heat-conducting element 41 close to the gas tank 3 is the cold part 412. Heat can be transferred between the hot part 411 and the cold part 412 of the heat-conducting element 41. To improve the heat transfer efficiency of the heat-conducting element 41, the heat-conducting element 41 is made of a material with good thermal conductivity and easy processing, such as aluminum and aluminum alloys, copper and copper alloys, etc.

[0038] Furthermore, heat exchange occurs between the heating element 411 and the burner 2. Firstly, the heating element 411 is placed in the radiation zone of the burner 2, utilizing thermal radiation to increase its temperature and achieve heat exchange between the heating element 411 and the burner 2. Secondly, the heating element 411 can also be located near the burner 2, utilizing thermal convection to heat it and achieve heat exchange between the heating element 411 and the burner 2. Thirdly, the hot part 411 can also directly contact the burner 2 to achieve heat exchange between the hot part 411 and the burner 2. For example, when the hot part 411 contacts the front end 21 of the burner 2, the temperature of the hot part 411 can be rapidly increased due to the high temperature of the burner 2. Alternatively, the side end 23 or rear end 22 of the burner 2 can contact the hot part 411, and the surface of the hot part 411 can be adapted to the rear end 22 or side surface of the burner 2, thus reusing the heat from the side end 23 or rear end 22 of the burner 2. This does not affect the heat value radiated by the burner 2 to the front of the outer casing 1, and also improves the heat utilization rate of the burner 2. In this embodiment, the hot part 411 is fixedly connected to the rear end 22 of the burner 2. Since the gas tank 3 is located between the rear end 22 of the burner 2 and the rear wall of the outer shell 1, the length of the heat-conducting component 41 connecting the burner 2 and the gas tank 3 is reduced, which improves the heat conduction efficiency of the heat-conducting component 41. At the same time, the shorter distance also reduces the heat dissipation of the heat-conducting component 41. The temperature of the rear end 22 of the burner 2 is much lower than the temperature of the front end 21, so that after the heat of the hot part 411 is transferred to the cold part 412, the temperature of the cold part 412 is within the safe operating range of the gas tank 3 (generally, the ambient temperature of the gas tank is not higher than 65 degrees Celsius), which improves the safety of the gas tank 3 during use.

[0039] Heat exchange occurs between the cooling section 412 and the gas tank 3. Firstly, the cooling section 412 is placed around the gas tank 3, and heat exchange is achieved through heat convection between the gas tank 3 and the cooling section 412. Secondly, the cooling section 412 is placed in direct contact with the gas tank 3, improving the heat exchange efficiency between them.

[0040] Specifically, the surface area of ​​the front end 21 of the burner 2 is larger than the surface area of ​​the rear end 22, making the entire burner 2 generally a truncated pyramid structure, with the surfaces of the two side ends 23 being inclined surfaces. When the heating element 411 is fixed to the burner 2, the heating element 411 can adhere to and contact any surface of the burner 2 other than the front end 21. In this embodiment, the heating element 411 adheres to and contacts both the side end 23 and the rear end 22 of the burner 2. It can be understood that the heating element 411 can adhere to the rear end 22 alone, the heating element 411 can adhere to the side end 23 alone, or the heating element 411 can adhere to both the rear end 22 and the side end 23 simultaneously.

[0041] The heating element 411 is fixedly connected to the rear end 22. The fixing method can include welding, bonding, snap-fitting, or screwing. In this embodiment, the heating element 411 and the rear end 22 are welded, which not only improves the stability of the heat-conducting component 41 but also ensures tight contact, improving the heat exchange efficiency between the burner 2 and the heating element 411. The fixing method between the heating element 411 and the side end 23 is the same as that between the heating element 411 and the rear end 22, and will not be described again. The heat conduction device 4 includes thermally conductive silicone, which is disposed between the heating element 411 and the rear end 22 to fill the gaps caused by uneven surfaces, thus improving the heat exchange efficiency between the heating element 411 and the rear end 22. The thermally conductive silicone can also be replaced by other materials with good thermal conductivity.

[0042] The profile of the cooling section 412 is adapted to the side wall of the gas tank 3. Part or all of the profile of the cooling section 412 is circular or semi-circular to increase the contact area between the cooling section 412 and the gas tank 3. Thermally conductive silicone or other thermally conductive materials can also be placed between the cooling section 412 and the gas tank 3. The thermally conductive silicone is fixedly connected to the cooling section 412 and detachably connected to the gas tank 3 for easy disassembly and replacement.

[0043] The heat-conducting component 41 is integrally formed from a rectangular sheet metal. To improve heat exchange efficiency, the width of the sheet metal is greater than or equal to one-third of the height of the gas tank 3, or greater than or equal to one-third of the height of the rear end 22, to satisfy the contact area between the hot part 411 and the burner 2 and the contact area between the cold part 412 and the gas tank 3. For example, the contact area between the hot part 411 and the rear end 22 is greater than one-quarter of the surface area of ​​the rear end 22, the contact area between the hot part 411 and the side end 23 is greater than one-quarter of the surface area of ​​the rear end 22, and the contact area between the cold part 412 and the gas tank 3 is greater than or equal to one-eighth of the side surface area of ​​the gas tank 3. Furthermore, the contact portion between the cold part 412 and the gas tank 3 is located in the middle or lower part of the gas tank 3. In this embodiment, the contact area between the hot part 411 and the rear end 22 is greater than or equal to one-half of the surface area of ​​the rear end 22, and the contact area between the cold part 412 and the gas tank 3 is greater than or equal to two-thirds of the side surface area of ​​the gas tank 3, to improve heat exchange efficiency. Meanwhile, the increased heat-conducting volume of the heat-conducting component 41 also improves the heat transfer efficiency between the cold and hot ends. It is understandable that the contact area between the hot part 411 and the rear end 22 can be one-third, one-half, two-thirds, or all of the surface area of ​​the rear end 22; the contact area between the hot part 411 and the side end 23 can also be one-third, one-half, two-thirds, or all of the surface area of ​​the rear end 22; and the contact area between the cold part 412 and the gas tank 3 can also be one-sixth, one-fifth, one-quarter, or one-half of the side surface area of ​​the gas tank 3.

[0044] There are two burners 2. The two ends of the heat-conducting element 41 are respectively in contact with and fixed to the rear ends 22 of the two burners 2, that is, the two ends of the heat-conducting element 41 are the hot parts 411. Through the molding process, the middle part of the heat-conducting element 41 is adapted to the gas tank 3 and is in contact with and fixed to the gas tank 3, that is, the middle part of the heat-conducting element 41 is the cold part 412. Heat is transferred from the hot part 411 to the cold part 412 from two directions, which can better stabilize the temperature of the cold part 412 and further improve the stability of the gas pressure in the gas tank 3.

[0045] The heat transfer device 4 also includes a fixing member 42, which is connected to the heat-conducting member 41 or the outer shell 1. The fixing member 42 is connected to the heat-conducting member 41 at the cold part 412. The fixing member 42 can be detachably connected to the heat-conducting member 41, or it can be rotatably or slidably connected to the heat-conducting member 41 relative to the cold part 412. Under the combined action of the fixing member 42 and the cold part 412, the gas canister 3 is wrapped or fixed to the cold part 412. At the same time, the fixing member 42 is in contact with the gas canister 3, and the contour of the fixing member 42 is adapted to the side wall of the gas canister 3, thereby improving the heat transfer efficiency between the fixing member 42 and the gas canister 3. The fixing member 42 is in surface contact with the cold part 412 or the heat-conducting member 41, which improves the heat transfer efficiency between the heat-conducting member 41 and the fixing member 42, thereby improving the heat transfer efficiency between the gas canister 3 and the heat-conducting member 41. In this embodiment, one end of the fixing member 42 is hinged to the heat-conducting member 41 located at the cold part 412, so that the fixing member 42 can be rotated relative to the cold part 412 around the hinge axis. The other end of the fixing member 42 is snapped or detachably screwed to the heat-conducting member 41 located at the cold part 412. The fixing member 42 itself is elastic. The fixing utilizes its own elasticity so that when the fixing member 42 and the cold part 412 wrap around the gas tank 3, both the fixing member 42 and the cold part 412 have abutting force against the gas tank 3, which improves the contact stability between the fixing member 42 and the gas tank 3, and between the cold part 412 and the gas tank 3.

[0046] Furthermore, the heat transfer device 4 also includes an extension plate 43, one end of which is in contact with the surface of the fixing member 42, and the other end of which is in contact with the surface of the cold part 412 or the heat-conducting member 41, thereby improving the heat transfer efficiency between the extension plate 43 and the heat-conducting member 41.

[0047] The contacts in this embodiment include direct contact between the hot part 411 and the burner 2, contact between the cold part 412 and the gas tank 3, contact between the fixing member 42 and the gas tank 3, contact between the extension plate 43 and the fixing member 42, and contact between the extension plate 43 and the heat-conducting member 41. Direct contact refers to the contact between two components, while indirect contact refers to the contact between two components filled with heat-conducting material, the purpose of which is to improve heat exchange efficiency.

[0048] In other embodiments, after the gas near the burner 2 is ignited, the burner 2 exchanges heat with the gas tank 3 via thermal radiation. Specifically, the burner 2 is partially or entirely made of transparent materials, such as glass, high-temperature resistant transparent plastic, or silicone. In particular, the rear end 22 of the burner 2 has a portion of glass filled within a partial through-hole, allowing thermal radiation to pass through the glass and reach the gas tank 3, thus enabling heat exchange between the burner 2 and the gas tank 3. Simultaneously, the glass or transparent plastic reduces the intensity of thermal radiation, decreasing the likelihood of the gas tank being exposed to a high-temperature environment for extended periods, thereby improving the safety of the gas tank during use.

[0049] It is evident that the term "comprising" as used in the specification and claims is an open-ended term and should therefore be interpreted as "comprising but not limited to". "Approximately" or "generally" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error. Terms such as "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; a fixed connection can also be integrally formed. They can be direct connections or indirect connections through an intermediate medium, unless otherwise explicitly defined. "Upper part," "middle part," and "lower part" can be understood as the upper third of the total height of the article being the upper part, the middle third of the total height of the article being the middle part, and the lower third of the total height of the article being the lower part. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] Although embodiments of this application have been shown and described above, it is understood that the above description is only a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has been disclosed above with reference to preferred embodiments, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A heater, comprising a housing, a burner, a gas cylinder, and a gas passage, wherein the burner and the gas passage are both fixed to the housing, characterized in that, The burner is connected to the gas tank through the gas passage. The gas in the gas tank is transported to the burner through the gas passage. The gas in the burner is burned when the burner is working. There is heat exchange between the burner and the gas tank.

2. The heater according to claim 1, characterized in that, The heater includes a heat conduction device, through which the burner exchanges heat with the gas tank; or, the outer casing is provided with an airflow channel, through which the burner exchanges heat with the gas tank via heat convection; or, when the gas burns at the burner, it emits heat radiation, and the heat radiation emitted by the burner comes into contact with the gas tank, through which the burner exchanges heat with the gas tank.

3. The heater according to claim 2, characterized in that, The heat conduction device includes a heat-conducting element that connects the burner and the gas cylinder.

4. The heater according to claim 3, characterized in that, The heat-conducting component includes a hot part and a cold part. The hot part is fixed to and in contact with the burner, and the cold part is detachably connected to and in contact with the gas tank; or, the hot part is fixed to the burner and exchanges heat, and the cold part is detachably connected to the gas tank and exchanges heat.

5. The heater according to claim 4, characterized in that, The burner has a rear end and a side end. Wherein, the surface of the hot part is adapted to the surface of the rear end, and the hot part is in contact with or exchanges heat with the rear end surface; or, the surface of the hot part is adapted to the surface of the side end, and the hot part is in contact with or exchanges heat with the side end surface; or, the hot part is in contact with or exchanges heat with both the side end and the rear end surface simultaneously.

6. The heater according to claim 5, characterized in that, The profile of the cooling section is adapted to the side profile of the gas tank, and the middle part and / or the lower part of the gas tank are in surface contact or heat exchange with the cooling section.

7. The heater according to claim 6, characterized in that, The contact area between the hot part and the rear end is greater than or equal to one-quarter of the surface area of ​​the rear end; or, the contact area between the hot part and the side end is greater than or equal to one-quarter of the surface area of ​​the side end; or, the contact area between the cold part and the side surface of the gas tank is greater than or equal to one-eighth of the surface area of ​​the side surface of the gas tank.

8. The heater according to claim 4, characterized in that, The heat conduction device further includes a fixing member, the profile of which is adapted to the side profile of the gas tank, and the profile of the cooling part is adapted to the side profile of the gas tank. The fixing member and the cooling part surround the gas tank.

9. The heater according to claim 8, characterized in that, One end of the fixing member is rotatably connected to the heat-conducting member, and the other end of the fixing member is detachably connected to the heat-conducting member; or, both ends of the fixing member are detachably connected to the heat-conducting member.

10. The heater according to claim 9, characterized in that, The heat conduction device includes an extension plate and thermally conductive silicone. One end of the extension plate is in contact with the surface of the heat-conducting component, and the other end of the extension plate is in contact with the surface of the fixing component. Thermally conductive silicone can be filled between the hot part and the burner, between the cold part and the gas tank, and between the extension plate and the heat-conducting component.

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