Combustion furnace for generating rotating flame

Abstract

The utility model discloses a combustion furnace used for generating rotating flame, the combustion furnace comprises a furnace end, an enclosing wall and a group of blades, the enclosing wall surrounds the outer side of the furnace end, each blade is respectively and obliquely arranged on the inner side of the enclosing wall, the blades are annularly arranged on the outer side of the furnace end, and the group of blades are arranged on the inner side of the enclosing wall. From an overlook view, every two adjacent blades have an overlapped part and are used for forming an airflow channel, each airflow channel is provided with an air inlet and an air outlet and obliquely extends from the air inlet to the air outlet, the air outlet of each airflow channel surrounds the furnace end, and the air inlet of each airflow channel is communicated with the furnace end. When air reaching the inner side of the enclosing wall flows through the airflow channel, the air is guided to the furnace end by the blades, and upward spiral airflow is formed near the furnace end and used for enabling flame generated by the furnace end to rotate, so that the combustion furnace generates the rotating flame, and a better ornamental effect is provided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a combustion furnace, in particular to a combustion furnace for producing rotating flame. BACKGROUND

[0002] In recent years, with the improvement of people's living standards and the longing for natural environment, camping, party and other outdoor activities gradually become a popular leisure way. In the embrace of nature, people not only can enjoy fresh air, but also can spend a good time with family and friends. And in these activities, the combustion furnace (such as alcohol stove, gas stove, etc.) as an important heating, ornamental and cooking equipment, plays an indispensable role.

[0003] The traditional combustion furnace is usually designed as a simple flame output device, and its flame presents a lump shape. Although this design can meet the basic heating, ornamental and cooking needs, it is relatively single in visual effect. When users use it, they can only see a bright fire, lack of change and beauty, and cannot fully experience the warmth and atmosphere brought by the flame. In addition, the flame shape and color of the existing combustion furnace change little, which cannot stimulate the visual interest and emotional resonance of users.

[0004] In outdoor activities, the flame is not only a practical tool, but also an important element to create atmosphere and add interest. People gather around the bonfire, chat, share stories, and the jumping and changing of the flame can enhance the interactive experience of people and create a warm and intimate atmosphere. In order to improve the visual experience and emotional connection of users, the inventors of the utility model have developed a combustion furnace capable of producing rotating flame. CONTENT OF THE UTILITY MODEL

[0005] One object of the utility model is to provide a combustion furnace for producing rotating flame, wherein the combustion furnace can produce rotating flame, which is beneficial to greatly improve the visual experience and emotional connection of users.

[0006] One object of the utility model is to provide a combustion furnace for producing rotating flame, wherein the combustion furnace provides a group of inclined blades, and the air flow channel is formed between adjacent blades, and the air is guided to the burner by the blades when flowing through the air flow channel, so that the burner can produce rotating flame, which is beneficial to greatly improve the visual experience and emotional connection of users.

[0007] The utility model discloses a purpose lies in providing a kind of combustion furnace for generating rotating flame, wherein a group of the vane of the combustion furnace is inclined, the airflow passage formed between adjacent vane is inclined and extended upwards from air inlet to air outlet direction, the air outlet of each airflow passage is around the burner head, in this way, air is formed spiral upward airflow when discharging airflow passage in the air outlet of airflow passage, not only can the burner head generate rotating flame, but also can pull high flame, further improve the visual experience of user.

[0008] The utility model discloses a purpose lies in providing a kind of combustion furnace for generating rotating flame, wherein the combustion furnace is around the outer side of the vane with enclosure, can reduce even avoid the influence of turbulent flow to the spiral upward airflow, is favorable to guarantee the rotating flame effect of the combustion furnace.

[0009] The utility model discloses a purpose lies in providing a kind of combustion furnace for generating rotating flame, wherein the vane and horizontal plane have smaller angle of inclusion, for example, the angle of inclusion between the vane and horizontal plane is 5 °-20 °, in this way, air can form obvious spiral upward airflow when discharging airflow passage in the air outlet of airflow passage, to guarantee the rotating flame effect of the combustion furnace.

[0010] The utility model discloses a purpose lies in providing a kind of combustion furnace for generating rotating flame, wherein the burner head is liftable, to adjust flame size, to enrich the flame effect of the combustion furnace.

[0011] According to an aspect of the utility model, the utility model provides a kind of combustion furnace for generating rotating flame, it includes:

[0012] Burner head, for generating flame;

[0013] Enclosure, wherein the enclosure is around the outer side of the burner head;And

[0014] A group of vane, wherein each vane is respectively obliquely arranged on the inner side of the enclosure, these vane are arranged in ring on the outer side of the burner head, from overhead visual angle, two adjacent vane have overlapping portion, for forming airflow passage, the airflow passage has air inlet and air outlet, the airflow passage is obliquely extended from the air inlet to the air outlet direction, the air of the air outlet of each airflow passage is around the burner head to the inner side of the enclosure is guided to the burner head when flowing through the airflow passage, spiral upward airflow is formed around the burner head, for making the flame of the burner head rotate, so that the combustion furnace generates rotating flame.

[0015] According to one embodiment of the utility model, the upper surface and the lower surface of each blade are planes, and the angle between the extension direction of the upper surface of each blade and the horizontal plane is 5-20 degrees.

[0016] According to one embodiment of the utility model, each blade is arranged at the middle or bottom of the fence.

[0017] According to one embodiment of the utility model, one end of the blade is at a lower position to form a blade low end, and the other end is at a higher position to form a blade high end, the blade low end of one blade is below the blade high end of the blade adjacent thereto to form an air flow channel between the two adjacent blades, and the blade high end of the blade is above the blade low end of the blade adjacent thereto to form another air flow channel between the two adjacent blades, wherein the blade low end of the blade below and the middle of the blade above form an air inlet of the air flow channel, and the middle of the blade below and the blade high end of the blade above and the inner sides of the two adjacent blades form an air outlet.

[0018] According to one embodiment of the utility model, the upper surface of each blade is an outwardly convex arc surface, and the lower surface is an inwardly concave arc surface; or the upper surface of each blade is an inwardly concave arc surface, and the lower surface is an outwardly convex arc surface.

[0019] According to one embodiment of the utility model, the outer side of the blade has a plug-in column, a mounting arm and a first mounting hole formed in the mounting arm, the fence has a plug-in hole and a second mounting hole, the position of the second mounting hole is lower than that of the plug-in hole, after the plug-in column of the blade is plugged into the plug-in hole of the fence, the position of the first mounting hole of the blade corresponds to that of the second mounting hole of the fence, and a screw or a screw is mounted in the first mounting hole of the blade and the second mounting hole of the fence to mount the blade on the fence; or the outer side of the blade is welded to the fence.

[0020] According to one embodiment of the utility model, the inner side of the blade is arc-shaped, so that a group of blades arranged in a ring shape enclose a circular hole matching the cylindrical furnace head.

[0021] According to one embodiment of the utility model, the furnace head is liftable, when the furnace head is lowered to the lowest position, the top of the furnace head is below a group of blades, and when the furnace head is raised to the highest position, the top of the furnace head is above a group of blades.

[0022] According to one embodiment of the present application, the combustion furnace comprises a furnace body, the furnace body has a furnace cavity and a top through hole communicated with the furnace cavity, and the bottom of the furnace head extends to the furnace cavity of the furnace body through the top through hole of the furnace body.

[0023] According to one embodiment of the present application, the furnace body has a rotating hole communicated with the furnace cavity, wherein the combustion furnace comprises a lifting unit, the lifting unit comprises a first support, a second support and a rotating part, the first support is fixedly arranged on the furnace body and located in the furnace cavity of the furnace body, the first support has a guide groove extending along the height direction, the second support comprises a bottom support ring and a connecting arm extending outward from the peripheral wall of the bottom support ring, the connecting arm passes through the guide groove of the first support, the rotating part comprises a screw rod and a screw sleeve sleeved on the screw rod, the screw sleeve is mounted on the end of the connecting arm away from the bottom support ring, and the top of the screw rod extends to the outside of the furnace body through the rotating hole of the furnace body, wherein the bottom support ring is fixedly mounted on the bottom of the furnace head.

[0024] According to one embodiment of the present application, the first support comprises a top support ring, an extension arm extending downward from the top support ring, and a stabilizing plate extending outward from the bottom of the extension arm, the top support ring is fixedly arranged on the furnace body, and the bottom of the screw rod is rotatably mounted on the stabilizing plate, wherein the guide groove is formed in the extension arm.

[0025] According to one embodiment of the present application, the combustion furnace comprises a furnace head cylinder and an assembly cylinder, the bottom of the furnace head cylinder sequentially passes through the top through hole of the furnace body and the top support ring, the assembly cylinder is assembled on the part of the furnace head cylinder passing through the top support ring, so that the assembly cylinder and the furnace head cylinder cooperatively clamp the top support ring and the furnace body, and the top support ring is fixedly arranged on the furnace body, wherein the furnace head is arranged on the furnace head cylinder in a liftable manner.

[0026] According to one embodiment of the present application, the combustion furnace comprises a supporting unit, the supporting unit comprises a supporting cylinder, a fixed supporting arm and a rotating supporting arm, the supporting cylinder is arranged on the furnace body in a manner of surrounding the outside of the furnace head cylinder, the fixed supporting arm extends outward from the top of the supporting cylinder, and the rotating supporting arm is rotatably arranged on the fixed supporting arm, wherein the enclosing wall is arranged on the fixed supporting arm, and the enclosing wall is supported by the fixed supporting arm above the furnace body, wherein the supporting cylinder has an air inlet hole, and air is allowed to reach the inside of the enclosing wall through the air inlet hole of the supporting cylinder.

[0027] According to one embodiment of the present application, the combustion stove comprises a support unit, the support unit comprises a support cylinder, a fixed support arm and a rotating support arm, the support cylinder is arranged on the stove body in a manner of surrounding the outside of the stove head cylinder, the fixed support arm extends outward from the top of the support cylinder, the rotating support arm is rotatably arranged on the fixed support arm, wherein the enclosing wall is arranged on the fixed support arm, the enclosing wall is supported by the fixed support arm above the stove body, wherein the enclosing wall has an air inlet hole, air is allowed to reach the inside of the enclosing wall through the air inlet hole of the enclosing wall.

[0028] According to one embodiment of the present application, the combustion stove comprises a support unit, the support unit comprises a support cylinder, a fixed support arm and a rotating support arm, the support cylinder is arranged on the stove body in a manner of surrounding the outside of the stove head cylinder, the fixed support arm extends outward from the top of the support cylinder, the rotating support arm is rotatably arranged on the fixed support arm, wherein the enclosing wall is arranged on the fixed support arm, the enclosing wall is supported by the fixed support arm above the stove body, wherein the inner diameter size of the enclosing wall is greater than the outer diameter size of the support cylinder, so as to form an air inlet hole between the enclosing wall and the support cylinder, air is allowed to reach the inside of the enclosing wall through the air inlet hole formed between the enclosing wall and the support cylinder.

[0029] According to one embodiment of the present application, the combustion stove comprises a protection unit, the protection unit comprises a protection cylinder made of glass, the bottom of the protection cylinder is sunken to the inside of the enclosing wall, and the protection cylinder is supported by a group of the blades.

[0030] According to one embodiment of the present application, the protection unit comprises a high-temperature-resistant silica gel ring, the silica gel ring is arranged at the bottom of the protection cylinder, and the silica gel ring is used for isolating the protection cylinder and a group of the blades.

[0031] According to one embodiment of the present application, the stove body has a fuel filling port, the fuel filling port is communicated with the stove cavity, and alcohol is allowed to be filled into the stove cavity through the fuel filling port of the stove body.

[0032] According to another aspect of the present application, the present application provides a combustion stove, which comprises:

[0033] a stove head for generating a flame;

[0034] a stove head cylinder, wherein the stove head cylinder is covered outside the stove head;

[0035] a plurality of leaves, wherein each of the leaves is respectively arranged on the top of the burner head cylinder, the leaves are arranged in a ring shape, two adjacent leaves have an overlapping portion from a top view, and the overlapping portion forms an air flow channel having an air inlet and an air outlet, the air flow channel extends from the air inlet to the air outlet in a slanting manner, and the air outlet of each of the air flow channels surrounds the burner head; and

[0036] a fence, wherein the fence surrounds the outside of the plurality of leaves, and air reaching the inside of the fence is guided to the burner head by the leaves when flowing through the air flow channel, and forms a spiral upward air flow near the burner head, so as to rotate the flame generated by the burner.

[0037] According to an embodiment of the present application, the inside of the leaf is welded to the top of the burner head cylinder, so as to arrange the leaf on the top of the burner head cylinder.

[0038] According to an embodiment of the present application, the burner includes a leaning ring, the inside of the leaf is welded to the peripheral wall of the leaning ring, and the leaning ring is leaned on the top of the burner head cylinder, so as to arrange the leaf on the top of the burner head cylinder.

[0039] According to an embodiment of the present application, the burner head is liftable, when the burner head is lowered to the lowest position, the top of the burner head is below the plurality of leaves, and when the burner head is lifted to the highest position, the top of the burner head is above the plurality of leaves. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a three-dimensional schematic view of a state of a burner according to a preferred embodiment of the present application.

[0041] Figure 2 is a three-dimensional schematic view of another state of the burner according to the preferred embodiment of the present application.

[0042] Figure 3 is a three-dimensional schematic view of another state of the burner according to the preferred embodiment of the present application.

[0043] Figure 4 is an exploded schematic view of a perspective of the burner according to the preferred embodiment of the present application.

[0044] Figure 5 is an exploded schematic view of another perspective of the burner according to the preferred embodiment of the present application.

[0045] Figure 6is a cross-sectional view of a planar perspective of the combustion furnace according to the above preferred embodiment of the present application.

[0046] Figure 7 is Figure 6 a close-up view of one position.

[0047] Figure 8 is Figure 6 a close-up view of another position.

[0048] Figure 9 is a cross-sectional view of a perspective of one state of the combustion furnace according to the above preferred embodiment of the present application.

[0049] Figure 10 is a cross-sectional view of a perspective of another state of the combustion furnace according to the above preferred embodiment of the present application.

[0050] Figure 11 is a perspective view of one partial position of the combustion furnace according to the above preferred embodiment of the present application.

[0051] Figure 12 is a perspective view of another partial position of the combustion furnace according to the above preferred embodiment of the present application.

[0052] Figure 13 is a cross-sectional view of the above partial position of the combustion furnace according to the above preferred embodiment of the present application.

[0053] Figure 14 is a perspective view of one variant example of the combustion furnace according to the above preferred embodiment of the present application.

[0054] Figure 15 is an exploded view of the above variant example of the combustion furnace according to the above preferred embodiment of the present application.

[0055] Figure 16 is a perspective view of another variant example of the combustion furnace according to the above preferred embodiment of the present application.

[0056] Figure 17 is an exploded view of the above variant example of the combustion furnace according to the above preferred embodiment of the present application. DETAILED DESCRIPTION

[0057] Before any embodiments of the present disclosure are described in detail, it is to be understood that the present disclosure is not limited in any way to the details of construction and arrangement of parts set forth in the following description or illustrated in the following drawings. The present disclosure is capable of other embodiments and of being practiced or being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms "mounted," "connected," "supported," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings.

[0058] Also, in the disclosure of the present disclosure, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as limiting the present disclosure; secondly, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, the term "one" cannot be understood as limiting the number.

[0059] Reference is made to the drawings accompanying the specification of the present disclosure Figures 1 to 13 A combustion furnace for generating a rotating flame according to a preferred embodiment of the present disclosure will be disclosed and described in the following description, wherein the combustion furnace comprises a burner head 10, a surrounding wall 20, and a set of vanes 30.

[0060] Specifically, each of the vanes 30 is obliquely arranged on the inner side of the surrounding wall 20, and from a top-down perspective, there is an overlapping portion between adjacent vanes 30, for forming a plurality of airflow channels 31. Since each of the vanes 30 is obliquely arranged, the airflow channels 31 obliquely extend from an air inlet 311 to an air outlet 312, so that when the air flowing through the airflow channels 31 is discharged through the air outlet 312, a spiral upward airflow can be formed.

[0061] That is, with reference to the drawings accompanying the specification of the present disclosure Figure 13Since the vane 30 is arranged obliquely, one end of the vane 30 is at a lower position, which forms a vane low end 32 of the vane 30, and the other end of the vane 30 is at a higher position, which forms a vane high end 33 of the vane 30, wherein the vane low end 32 of one vane 30 is below the vane high end 33 of the vane 30 adjacent thereto, so that the air flow channel 31 is formed between the two adjacent vanes 30, and the vane high end 33 of the vane 30 is above the vane low end 32 of the vane 30 adjacent thereto, so that another air flow channel 31 is formed between the two adjacent vanes 30. Through the above structure, there is an overlapping part between the adjacent vanes 30 from the perspective of the top view, which is used to form the air flow channel 31.

[0062] It can be understood by those skilled in the art that, in the combustion furnace of the present application, the overlapping part between the adjacent vanes 30 from the perspective of the top view does not mean that the adjacent vanes 30 are directly overlapped, but there is a gap between the adjacent vanes 30 in the height direction, which is used to form the air flow channel 31 between the two adjacent vanes 30. In addition, the air inlet 311 of the air flow channel 31 is formed between the vane low end 32 of the lower vane 30 and the middle part of the upper vane 30, and the air outlet 312 is formed between the middle part of the lower vane 30 and the vane high end 33 of the upper vane 30 and between the inner sides of the two adjacent vanes 30.

[0063] The surrounding wall 20 and the group of vanes 30 are located outside the burner head 10, the air outlet 312 of each air flow channel 31 surrounds the burner head 10, and the air reaching the inner side of the surrounding wall 20 is guided to the burner head 10 by the vanes 30 when flowing through the air flow channel 31, forming a spiral upward air flow near the burner head 10, which is used to rotate the flame generated by the burner head 10, so that the combustion furnace can generate a rotating flame, and at the same time, the flame can be pulled up, the rotating effect of the flame is more obvious, and the visual experience of the user is improved.

[0064] Preferably, the group of vanes 30 is arranged at the middle or bottom of the surrounding wall 20, that is, the top of the surrounding wall 20 is higher than the group of vanes 30, in this way, it is beneficial to reduce or even avoid the influence of turbulence on the spiral upward air flow, and it is beneficial to ensure that the combustion furnace generates a clear rotating flame.

[0065] It is worth mentioning that the specific way of arranging the vanes 30 on the surrounding wall 20 is not limited in the combustion furnace of the present application. For example, in the drawings of the present application, the vanes 30 are arranged at the middle of the surrounding wall 20, and the top of the surrounding wall 20 is higher than the group of vanes 30.Figures 1 to 13 In this specific example of the combustion furnace, the outer side of the vane 30 has an insertion column 34, an installation arm 35, and a first installation hole 36 formed in the installation arm 35. The enclosing wall 20 has a set of insertion holes 21 and a set of second installation holes 22, the position of the second installation holes 22 being lower than that of the insertion holes 21. After the insertion column 34 of the vane 30 is inserted into the insertion hole 21 of the enclosing wall 20, the position of the first installation hole 36 of the vane 30 is aligned with that of the second installation hole 22 of the enclosing wall 20, and a screw or a rivet is installed in the first installation hole 36 of the vane 30 and the second installation hole 22 of the enclosing wall 20 to tilt the vane 30 on the enclosing wall 20. Alternatively, in other examples of the combustion furnace, the outer side of the vane 30 can be welded to the enclosing wall 20 to set the vane 30 on the inner side of the enclosing wall 20.

[0066] Preferably, the inner side of the vane 30 is arc-shaped, so that a set of vanes 30 arranged in a ring shape can enclose a circular hole 37 matching the cylindrical burner head 10, which is conducive to maintaining stable flame and presenting a better visual effect.

[0067] Reference is made to the accompanying drawings Figures 11 to 13 In this specific example of the combustion furnace, the upper surface and the lower surface of each vane 30 are planar, the angle between the extension direction of the upper surface of each vane 30 and the horizontal plane being 5°-20°, and correspondingly, the angle between the extension direction of the lower surface of each vane 30 and the horizontal plane being 5°-20°. In this way, air can form a clear upward spiral airflow when it is discharged from the airflow passage 311 through the air outlet 312 of the airflow passage 31, so that the combustion furnace can produce a clear rotating effect. Preferably, the angle between the extension direction of the upper surface of each vane 30 and the horizontal plane is 15°, and correspondingly, the angle between the extension direction of the lower surface of each vane 30 and the horizontal plane is 15°. Preferably, the inclination angles of each vane 30 are the same, so that the airflow passages 31 formed between adjacent vanes 30 are uniform, which is conducive to ensuring the rotating flame effect produced by the combustion furnace.

[0068] Optionally, in other examples of the combustion furnace of this utility model, the upper and lower surfaces of each blade 30 are arc-shaped. For example, in one specific example, the upper surface of each blade 30 is a convex arc surface and the lower surface is a concave arc surface. In this way, the airflow channel 31 formed between adjacent blades 30 can be more uniform, which is beneficial to ensuring the effect of the rotating flame generated by the combustion furnace. In another specific example, the upper surface of each blade 30 is a concave arc surface and the lower surface is a convex arc surface. In this way, the airflow channel 31 formed between adjacent blades 30 can be more uniform, which is beneficial to ensuring the effect of the rotating flame generated by the combustion furnace.

[0069] Further, see attached document. Figures 1 to 6 , Figure 9 and Figure 10 The combustion furnace includes a furnace body 40, which has a furnace cavity 41 and a top through-hole 42 communicating with the furnace cavity 41. The bottom of the burner head 10 extends through the top through-hole 42 into the furnace cavity 41 of the furnace body 40. In other words, the top of the burner head 10 is located outside the furnace body 40, and the bottom of the burner head 10 is located within the furnace cavity 41 of the furnace body 40.

[0070] In the appendix Figures 1 to 13 In this specific example of the combustion furnace shown, fuel (e.g., alcohol, kerosene, mineral oil, ghee, etc.) can be stored in the furnace cavity 41 of the furnace body 40, and the bottom of the burner head 10 can be immersed in the fuel stored in the furnace cavity 41 of the furnace body 40, so that the top of the burner head 10 can generate a flame by burning the fuel.

[0071] It is worth mentioning that the specific type of the burner head 10 is not limited in the combustion furnace of this utility model. For example, in the appendix Figures 1 to 13 In this specific example of the combustion furnace of the present invention shown, the burner head 10 includes a metal mesh 11 and a furnace core 12 inserted into the metal mesh 11. The furnace core 12 may be, but is not limited to, a combustible core material made of cotton. The metal mesh 11 is used to maintain the shape of the furnace core 12. In this way, when a flame is generated at the top of the burner head 10 due to the combustion of fuel, the fuel stored in the furnace cavity 41 of the furnace body 40 can be continuously drawn to the top of the burner head 10.

[0072] In the appendix Figures 1 to 13In the specific example of the combustion furnace shown, the furnace body 40 includes a side wall 43, a top wall 44, and a bottom wall 45. The top wall 44 and the bottom wall 45 are respectively arranged at the top and bottom of the side wall 43 to form the furnace cavity 41 by the side wall 43, the top wall 44, and the bottom wall 45. The top portion through hole 42 is formed in the top wall 44.

[0073] In a specific example of the combustion furnace, the top wall 44 and the side wall 43 are integrated, for example, by bending a metal plate along a predetermined position to form the integrated top wall 44 and side wall 43. The bottom wall 45 is welded to the bottom of the side wall 43. It should be understood that when welding the bottom wall 45 and the bottom of the side wall 43, the sealing of the welding position needs to be ensured. In another specific example of the combustion furnace, the bottom wall 45 and the side wall 43 are integrated, for example, by bending a metal plate along a predetermined position to form the integrated bottom wall 45 and side wall 43. The top wall 44 is welded to the top of the side wall 43. It should be understood that when welding the top wall 44 and the top of the side wall 43, the sealing of the welding position needs to be ensured. In another specific example of the combustion furnace, the top wall 44 and the bottom wall 45 are respectively welded to the top and bottom of the side wall 43. It should be understood that when welding the top wall 44 and the top of the side wall 43 and welding the bottom wall 45 and the bottom of the side wall 43, the sealing of the welding position needs to be ensured.

[0074] The furnace body 40 further includes a fuel filling port 46, which is communicated with the furnace cavity 41. Alcohol, kerosene, mineral oil, ghee, and other fuels are allowed to be filled into the furnace cavity 41 through the fuel filling port 46 of the furnace body 40. It can be understood that in the embodiment in which alcohol is allowed to be filled into the furnace cavity 41 of the furnace body 40 through the fuel filling port 46 of the furnace body 40, the combustion furnace is an alcohol stove.

[0075] Preferably, the combustion furnace includes a valve 100 mounted on the furnace body 10 for opening and closing the fuel filling port 46 of the furnace body 40. When the valve 100 opens the fuel filling port 46 of the furnace body 40, alcohol, kerosene, mineral oil, ghee, and other fuels are allowed to be filled into the furnace cavity 41 through the fuel filling port 46. When the valve 100 closes the fuel filling port 46 of the furnace body 40, alcohol, kerosene, mineral oil, ghee, and other fuels are prevented from leaking and / or evaporating through the fuel filling port 46.

[0076] Preferably, the side wall 43 of the furnace body 40 has a window 431 which is in communication with the furnace cavity 41, wherein the combustion furnace further comprises a transparent first sealing member 110 which can be but not limited to glass material, the first sealing member 110 is sealingly installed on the window 431 of the side wall 43, on the one hand, the first sealing member 110 prevents the alcohol stored in the furnace cavity 41 of the furnace body 40 from leaking and evaporating, on the other hand, the user can observe the amount of alcohol in the furnace cavity 41 of the furnace body 40 through the first sealing member 110.

[0077] Further, with reference to the accompanying drawings Figure 9 and Figure 10 , the furnace head 10 of the combustion furnace can be lifted, when the furnace head 10 is lowered to the lowest position, the top of the furnace head 10 is below a group of the blades 30, at this time the flame generated by the furnace head 10 burning fuel is minimum, when the furnace head 10 is lifted to the highest position, the furnace head 10 is above a group of the blades 30, at this time the flame generated by the furnace head 10 burning fuel is maximum. That is, by lifting the furnace head 10, the size of the flame can be adjusted, thereby enriching the flame effect generated by the combustion furnace. It can be understood that in the process of lifting the furnace head 10, the top of the furnace head 10 passes through the circular hole 37 formed by a group of the blades 30.

[0078] Continuing to refer to the accompanying drawings Figure 6 , Figure 9 and Figure 10 , the combustion furnace further comprises a lifting unit 50 for realizing the lifting of the furnace head 10. Specifically, the furnace body 40 has a rotating hole 47 which is in communication with the furnace cavity 41. Preferably, the rotating hole 47 of the furnace body 40 is formed in the top wall 44. The lifting unit 50 comprises a first support 51, a second support 52 and a rotating part 53. The first support 51 is fixedly arranged on the furnace body 40 in a manner of being located in the furnace cavity 41 of the furnace body 40, and the first support 51 has a guide groove 511 which extends along the height direction. The second support 52 comprises a bottom support ring 521 and a connecting arm 522, the connecting arm 522 extends outward from the peripheral wall of the bottom support ring 522 and passes through the guide groove 511 of the first support 51. The rotating part 53 comprises a screw rod 531 and a sleeve 532 sleeved on the screw rod 531, the sleeve 532 is installed on the end of the connecting arm 522 away from the bottom support ring 521, the top of the screw rod 531 extends to the outside of the furnace body 40 through the rotating hole 47 of the furnace body 40, wherein the bottom support ring 521 is fixedly installed on the bottom of the furnace head 10.

[0079] When the user rotates the screw rod 531 in one direction, the screw rod 531 and the screw sleeve 532 cooperate with each other to allow the screw sleeve 532 to move upward along the height direction of the screw rod 531, and the screw sleeve 532 drives the second support 52 and the burner head 10 to move upward, so that the burner head 10 can be lifted to the highest position, and the top of the burner head 10 can be located above a group of the blades 30, and in this process, the first support 51 can limit the moving direction of the second support 52 to avoid the rotation of the second support 52. When the user rotates the screw rod 531 in the opposite direction, the screw rod 531 and the screw sleeve 532 cooperate with each other to allow the screw sleeve 532 to move downward along the height direction of the screw rod 531, and the screw sleeve 532 drives the second support 52 and the burner head 10 to move downward, so that the burner head 10 can be lowered to the lowest position, and the top of the burner head 10 can be located below a group of the blades 30, and in this process, the first support 51 can limit the moving direction of the second support 52 to avoid the rotation of the second support 52.

[0080] In one specific example of the combustion furnace, the end portion of the connecting arm 522 adjacent to the bottom support ring 521 can be welded to the bottom support ring 521, so that the connecting arm 522 can extend outward from the peripheral wall of the bottom support ring 521, the bottom support ring 521 can be welded to the bottom of the metal mesh 11 of the burner head 10, so that the bottom support ring 521 is installed at the bottom of the burner head 10, and the screw sleeve 532 can be installed on the connecting arm 522 through a screw rod.

[0081] Reference is made to the accompanying drawings Figures 1 to 4 Figure 6 Figure 9 and Figure 10 The rotating part 53 includes a knob 533 installed at the top of the screw rod 531, and the user can apply force to the screw rod 531 through the knob 533 to rotate the screw rod 531. In addition, the combustion furnace further includes a second sealing member 120 sleeved on the screw rod 531 and fixedly installed on the furnace body 40, for reducing or preventing the gap between the screw rod 531 and the top wall 44.

[0082] Reference is made to the accompanying drawings Figure 9 and Figure 10 ​​The first support 51 comprises a top support ring 512, an extension arm 513 extending downwardly from the top support ring 512, and a shaft stabilizing plate 514 extending outwardly from the bottom of the extension arm 513, and the guide slot 511 is formed in the extension arm 513. For example, in one specific example of the combustion furnace, the top support ring 512, the extension arm 513 and the shaft stabilizing plate 514 can be formed integrally by bending a metal plate along a preset position, and the extension arm 513 extends upwardly to and is connected to the top support ring 512 and extends downwardly to and is connected to the shaft stabilizing plate 514. The top support ring 512 is fixedly arranged on the top wall 44 of the furnace body 40, so that the position of the top support ring 512 relative to the furnace body 40 remains unchanged, and the screw rod 531 is rotatably mounted on the shaft stabilizing plate 514, so that when a user applies force to the screw rod 531, the screw rod 531 only rotates around the central axis of the screw rod 531, avoiding the inclination of the screw rod 531, thereby ensuring the reliability of the combustion furnace.

[0083] In some examples of the combustion furnace of the utility model, the top support ring 512 of the first support 51 can be fixedly arranged on the top wall 44 of the furnace body 40 by welding. Figures 1 to 13 In this specific example of the combustion furnace of the utility model shown in the accompanying drawings, the combustion furnace further comprises a burner cylinder 60 and an assembly cylinder 70, the bottom of the burner cylinder 60 sequentially passes through the top through hole 42 of the furnace body 40 and the top support ring 512, and the assembly cylinder 70 is assembled on the part of the burner cylinder 60 that passes through the top support ring 512, so that the assembly cylinder 70 and the burner cylinder 60 cooperatively clamp the top support ring 512 and the top wall 44, thereby fixing the top support ring 512 on the top wall 44 of the furnace body 40. The burner 10 is arranged in the burner cylinder 60 in a liftable manner, and the combustion position of the burner 10 is controlled by the burner cylinder 60. Specifically, when the burner 10 is lowered to the inside of the burner cylinder 60, only the top surface of the burner 10 produces flame, at this time, the flame produced by the burner 10 due to combustion of fuel is minimum, and when the burner 10 is raised to expose the peripheral wall of the burner 10 to the outside of the burner cylinder 60, the top surface and the part of the peripheral wall of the burner 10 exposed to the outside of the burner cylinder 60 can produce flame, at this time, the flame produced by the burner 10 due to combustion of fuel is increased.

[0084] In this specific example of the combustion stove, the assembly mode of the furnace head cylinder 60 and the assembly cylinder 70 can be screwing, that is, the bottom of the furnace head cylinder 60 is provided with an external thread structure, the assembly cylinder 70 is provided with an internal thread structure, and the external thread structure of the furnace head cylinder 60 and the internal thread structure of the assembly cylinder 70 are matched with each other, so that the assembly cylinder 70 is screwed on the furnace head cylinder 60. Alternatively, in other examples of the combustion stove of the utility model, the furnace head cylinder 60 and the assembly cylinder 70 can also be welded.

[0085] Referring to the accompanying drawings Figures 1 to 5 , Figure 9 and Figure 10 , the combustion stove further comprises a support unit 80, the support unit 80 comprises a support cylinder 81, at least one fixed support arm 82 and at least one rotating support arm 83, the support cylinder 81 is arranged on the furnace body 40 in a manner of surrounding the furnace head cylinder 60, the fixed support arm 82 extends outward from the top of the support cylinder 81, and the rotating support arm 83 is rotatably installed on the fixed support arm 82. Preferably, the fixed support arm 82 is in the shape of "L" and comprises a transversely extending portion 821 and a longitudinally extending portion 822, the inner end of the transversely extending portion 821 is fixedly arranged on the top of the support cylinder 81, for example, the inner end of the transversely extending portion 821 can be welded on the top of the support cylinder 81, or the inner end of the transversely extending portion 821 can be installed on the top of the support cylinder 81 through a rivet or a screw, the longitudinally extending portion 822 integrally extends upward from the outer end of the transversely extending portion 821, and the rotating support arm 83 is rotatably installed on the top of the longitudinally extending portion 822. The enclosing wall 20 is arranged on the fixed support arm 82, and the fixed support arm 82 supports the enclosing wall 20 on the outside of the furnace head 10. After the rotating support arm 83 is rotated to be unfolded, the rotating support arm 83 can support other objects (for example, a kettle, a baking tray, etc.) above the furnace head 10, and after the rotating support arm 83 is rotated to be folded, the rotating support arm 83 can hold the enclosing wall 20, so as to avoid the enclosing wall 20 from falling and being lost during the user carries the combustion stove. It should be noted that even if the rotating support arm 83 is folded, the rotating support arm 83 can also support other objects above the furnace head 10.

[0086] Preferably, in the accompanying drawings Figures 1 to 13In one specific example of the illustrated utility model, the number of the fixed support arms 82 is three, and the three fixed support arms 82 are distributed at equal intervals, and correspondingly, the number of the rotating support arms 83 is also three, and in this way, the three fixed support arms 82 can stably support the enclosing wall 20, and the three rotating support arms 83 can reliably support other objects after being unfolded and reliably hold the enclosing wall 20 after being folded.

[0087] In the accompanying drawings Figures 1 to 13 In one specific example of the illustrated utility model, the support cylinder 81 has a plurality of air inlet holes 811, and the air inlet holes 811 are located below the group of vanes 30, wherein the air inlet holes 811 of the support cylinder 81 allow air to reach the inner side of the enclosing wall 20 and enter the airflow passage 31 through the air inlet 311 of the airflow passage 31. Optionally, in some examples of the combustion furnace, the air inlet holes 811 can be formed in the enclosing wall 20. Optionally, in other examples of the combustion furnace, the air inlet holes 811 are formed between the enclosing wall 20 and the support cylinder 81, and specifically, the inner diameter of the enclosing wall 20 is larger than the outer diameter of the support cylinder 81 to form the air inlet holes 811 between the enclosing wall 20 and the support cylinder 81.

[0088] In the accompanying drawings Figures 3 to 7 The combustion furnace includes a protection unit 90, and the protection unit 90 includes a protection cylinder 91, which can be but is not limited to glass, and the bottom of the protection cylinder 91 can be sunken to the inner side of the enclosing wall 20, and the protection cylinder 91 is supported by the group of vanes 30, on the one hand, the protection cylinder 91 can avoid the interference of external wind with the rotating flame to ensure the rotating effect of the flame, and on the other hand, the protection cylinder 91 can avoid the spattering of sparks to protect the personnel sitting around the combustion furnace.

[0089] Preferably, the protection unit 90 further includes a high-temperature-resistant silica gel ring 92, and the silica gel ring 92 is arranged at the bottom of the protection cylinder 91, wherein the silica gel ring 92 is used to isolate the protection cylinder 91 and the group of vanes 30 to facilitate the protection of the glass protection cylinder 91. Preferably, the silica gel ring 92 has a clamping groove 921, and the bottom of the protection cylinder 91 is clamped into the clamping groove 921 of the silica gel ring 92, and based on the friction force generated between the silica gel ring 92 and the bottom of the protection cylinder 91, the silica gel ring 92 can be reliably arranged at the bottom of the protection cylinder 91.

[0090] In the accompanying drawings Figures 1 to 6The combustion stove further comprises a set of feet 130 arranged at the bottom of the stove body 40 for supporting the stove body 40 to a proper height position, for example, the set of feet 130 can keep the bottom of the stove body 40 away from a table top, so as to facilitate heat dissipation of the stove body 40 and protect the table top during use of the combustion stove.

[0091] The combustion stove further comprises a set of feet 130 arranged at the bottom of the stove body 40 for supporting the stove body 40 to a proper height position, for example, the set of feet 130 can keep the bottom of the stove body 40 away from a table top, so as to facilitate heat dissipation of the stove body 40 and protect the table top during use of the combustion stove. Figure 14 And Figure 15 A variant of the combustion stove is shown in FIG. 6, which is different from the combustion stove shown in FIG. 1 in that, in the specific example of the combustion stove shown in FIG. 6, the inner sides of the set of vanes 30 are welded to the top of the stove head cylinder 60 to arrange the set of vanes 30 on the top of the stove head cylinder 60 in an inclined manner, and the enclosing wall 20 is arranged around the outer sides of the set of vanes 30 to reach the inner side of the enclosing wall 20, and the air flowing through the airflow passage 31 is guided by the vanes 30 to the stove head 10 to make the flame generated by the stove head 10 rotate, so that the combustion stove can generate a rotating flame to improve the visual experience of the user. Figures 1 to 13 And Figure 14 In the specific example of the combustion stove shown in FIG. 6, the enclosing wall 20 and the vanes 30 are not directly assembled, and by arranging the enclosing wall 20 around the outer sides of the set of vanes 30, air turbulence can be reduced or even avoided to facilitate guarantee of the effect of the rotating flame generated by the combustion stove. Figure 15 And Figure 14 In the specific example of the combustion stove shown in FIG. 6, the enclosing wall 20 and the vanes 30 are not directly assembled, and by arranging the enclosing wall 20 around the outer sides of the set of vanes 30, air turbulence can be reduced or even avoided to facilitate guarantee of the effect of the rotating flame generated by the combustion stove. Figure 15 Another variant of the combustion stove is shown in FIG. 7, which is different from the combustion stove shown in FIG. 1 in that, in the specific example of the combustion stove shown in FIG. 7, the combustion stove further comprises a leaning ring 140, the inner sides of the vanes 30 are welded to the peripheral wall of the leaning ring 140, and the leaning ring 140 is leaned on the top of the stove head cylinder 60 to arrange the vanes on the top of the stove head cylinder 60.

[0092] Figure 16 In the specific example of the combustion stove shown in FIG. 7, the inner sides of the vanes 30 are welded to the peripheral wall of the leaning ring 140, and the leaning ring 140 is leaned on the top of the stove head cylinder 60 to arrange the vanes on the top of the stove head cylinder 60. Figure 17 Figure 14 In the specific example of the combustion stove shown in FIG. 7, the inner sides of the vanes 30 are welded to the peripheral wall of the leaning ring 140, and the leaning ring 140 is leaned on the top of the stove head cylinder 60 to arrange the vanes on the top of the stove head cylinder 60. Figure 15 Figure 16 In the specific example of the combustion stove shown in FIG. 7, the inner sides of the vanes 30 are welded to the peripheral wall of the leaning ring 140, and the leaning ring 140 is leaned on the top of the stove head cylinder 60 to arrange the vanes on the top of the stove head cylinder 60. Figure 17 In the specific example of the combustion stove shown in FIG. 7, the inner sides of the vanes 30 are welded to the peripheral wall of the leaning ring 140, and the leaning ring 140 is leaned on the top of the stove head cylinder 60 to arrange the vanes on the top of the stove head cylinder 60.

[0093] Figure 16 In the specific example of the combustion stove shown in FIG. 7, the inner sides of the vanes 30 are welded to the peripheral wall of the leaning ring 140, and the leaning ring 140 is leaned on the top of the stove head cylinder 60 to arrange the vanes on the top of the stove head cylinder 60.​​​​Figure 17 In this specific example of the combustion stove shown, the vanes 30 are not welded directly to the top of the burner barrel 60, but are welded directly to the perimeter wall of the rest ring 140, which sets a group of the vanes 30 obliquely on the top of the burner barrel 60 when the rest ring 140 rests on the top of the burner barrel 60.

[0094] The same as the combustion stove shown, in the attached drawings Figure 14 and Figure 15 The same as the combustion stove shown, in the attached drawings Figure 16 and Figure 17 In this specific example of the combustion stove shown, the wall surrounds the outside of a group of the vanes 30, and the air reaching the inside of the wall 20 is guided by the vanes 30 to the burner 10 when flowing through the airflow passage 31, for making the flame generated by the burner 10 rotate, so that the combustion stove can generate a rotating flame to improve the visual experience of the user.

[0095] It should be understood by those skilled in the art that the above description and the embodiments of the utility model shown in the drawings are only examples and do not limit the utility model. The purpose of the utility model has been fully and effectively achieved. The function and structural principle of the utility model have been demonstrated and explained in the embodiments, and the implementation of the utility model can be any deformation or modification without departing from the principle.

Claims

1. A burner for producing a rotating flame, characterized in that The burner comprises: a burner head for generating a flame; a wall, wherein the wall is arranged outside the burner head; a plurality of blades, wherein each of the blades is arranged on the inner side of the wall, the blades are arranged in a ring shape outside the burner head, two adjacent blades have an overlapping part from a top view, and the overlapping part forms an air flow channel having an air inlet and an air outlet, the air flow channel extends from the air inlet to the air outlet in a slanting direction, the air outlet of each air flow channel is arranged around the burner head, and the air reaching the inner side of the wall is guided to the burner head by the blades when flowing through the air flow channel, and a spiral upward air flow is formed around the burner head, so that the flame generated by the burner head is rotated, and the burner generates a rotating flame.

2. The burner according to claim 1, wherein the upper surface and the lower surface of each blade are planar, and the angle between the extension direction of the upper surface of each blade and the horizontal plane is 5-20°.

3. The burner according to claim 1, wherein the upper surface of each blade is an outward convex arc surface, and the lower surface is an inward concave arc surface; or the upper surface of each blade is an inward concave arc surface, and the lower surface is an outward convex arc surface.

4. The burner according to claim 1, wherein each blade is arranged at the middle or the bottom of the wall.

5. The burner according to claim 1, wherein one end of each blade is arranged at a lower position to form a blade low end, and the other end is arranged at a higher position to form a blade high end, the blade low end of one blade is arranged below the blade high end of an adjacent blade to form an air flow channel between the two adjacent blades, and the blade high end of the one blade is arranged above the blade low end of another adjacent blade to form another air flow channel between the two adjacent blades, wherein the air inlet of the air flow channel is formed between the blade low end of the blade arranged below and the middle of the blade arranged above, and the air outlet is formed between the middle of the blade arranged below and the blade high end of the blade arranged above and the inner side of the two adjacent blades.

6. The burner according to claim 1, wherein the outer side of each blade is provided with a mounting post, a mounting arm and a first mounting hole formed in the mounting arm, the wall is provided with a mounting hole and a second mounting hole, the second mounting hole is arranged below the mounting hole, after the mounting post of the blade is inserted into the mounting hole of the wall, the position of the first mounting hole of the blade corresponds to the position of the second mounting hole of the wall, and a screw or a bolt is arranged in the first mounting hole of the blade and the second mounting hole of the wall to mount the blade to the wall; or the outer side of the blade is welded to the wall. ​ 7. The combustion furnace according to claim 1, wherein inner sides of the vanes are curved to form a circular hole for a set of the vanes arranged in a ring shape to match the cylindrical furnace head.

8. The combustion furnace according to claim 1, wherein the furnace head is liftable and lowerable, and when the furnace head is lowered to a lowest position, a top of the furnace head is located below a set of the vanes, and when the furnace head is raised to a highest position, the top of the furnace head is located above a set of the vanes.

9. The combustion furnace according to claim 8, wherein the combustion furnace comprises a furnace body having a furnace cavity and a top through hole communicating with the furnace cavity, and a bottom of the furnace head extends to the furnace cavity of the furnace body through the top through hole of the furnace body.

10. The combustion furnace according to claim 9, wherein the furnace body has a rotation hole communicating with the furnace cavity, and the combustion furnace comprises a lifting unit comprising a first support, a second support and a rotation part, the first support is fixedly arranged at the furnace body and located at the furnace cavity of the furnace body, the first support has a guide slot extending along a height direction, the second support comprises a bottom support ring and a connecting arm extending outward from a peripheral wall of the bottom support ring, the connecting arm passes through the guide slot of the first support, the rotation part comprises a screw rod and a screw sleeve sleeved on the screw rod, the screw sleeve is mounted at an end of the connecting arm away from the bottom support ring, and a top of the screw rod extends to an outside of the furnace body through the rotation hole of the furnace body, and wherein the bottom support ring is fixedly mounted at a bottom of the furnace head.

11. The combustion furnace according to claim 10, wherein the first support comprises a top support ring, an extension arm extending downward from the top support ring, and a stabilizing plate extending outward from a bottom of the extension arm, the top support ring is fixedly arranged at the furnace body, and a bottom of the screw rod is rotatably mounted at the stabilizing plate, and wherein the guide slot is formed in the extension arm.

12. The combustion furnace according to claim 11, wherein the combustion furnace comprises a furnace head cylinder and an assembly cylinder, a bottom of the furnace head cylinder passes through the top through hole of the furnace body and the top support ring in sequence, and the assembly cylinder is assembled to a portion of the furnace head cylinder passing through the top support ring, so that the assembly cylinder and the furnace head cylinder cooperatively clamp the top support ring and the furnace body, and the top support ring is fixedly arranged at the furnace body, and wherein the furnace head is liftable and lowerable arranged at the furnace head cylinder.

13. The fire pit of any one of claims 9 to 12, wherein the fire pit comprises a support unit, the support unit comprising a support cylinder, a fixed support arm, and a rotating support arm, the support cylinder being disposed on the fire body in a manner surrounding an outer side of the firebox cylinder, the fixed support arm extending outwardly from a top of the support cylinder, the rotating support arm being rotatably disposed on the fixed support arm, wherein the enclosure is disposed on the fixed support arm, the enclosure being supported by the fixed support arm over the fire body, wherein the support cylinder has an air inlet, air being allowed to pass through the air inlet of the support cylinder to an inner side of the enclosure.

14. The fire pit of any one of claims 9 to 12, wherein the fire pit comprises a support unit, the support unit comprising a support cylinder, a fixed support arm, and a rotating support arm, the support cylinder being disposed on the fire body in a manner surrounding an outer side of the firebox cylinder, the fixed support arm extending outwardly from a top of the support cylinder, the rotating support arm being rotatably disposed on the fixed support arm, wherein the enclosure is disposed on the fixed support arm, the enclosure being supported by the fixed support arm over the fire body, wherein the enclosure has an air inlet, air being allowed to pass through the air inlet of the enclosure to an inner side of the enclosure.

15. The fire pit of any one of claims 9 to 12, wherein the fire pit comprises a support unit, the support unit comprising a support cylinder, a fixed support arm, and a rotating support arm, the support cylinder being disposed on the fire body in a manner surrounding an outer side of the firebox cylinder, the fixed support arm extending outwardly from a top of the support cylinder, the rotating support arm being rotatably disposed on the fixed support arm, wherein the enclosure is disposed on the fixed support arm, the enclosure being supported by the fixed support arm over the fire body, wherein an inner diameter of the enclosure is greater than an outer diameter of the support cylinder to form an air inlet between the enclosure and the support cylinder, air being allowed to pass through the air inlet formed between the enclosure and the support cylinder to an inner side of the enclosure.

16. The fire pit of any one of claims 1 to 12, wherein the fire pit comprises a shield unit, the shield unit comprising a shield cylinder of glass, a bottom of the shield cylinder being sunken to an inner side of the enclosure, and the shield cylinder being supported by a set of the vanes.

17. The fire pit of claim 16, wherein the shield unit comprises a high-temperature resistant silica ring disposed on the bottom of the shield cylinder, the silica ring being used to isolate the shield cylinder and the set of vanes.

18. A combustion furnace characterized by including: a firebox for generating a fire; a firebox cylinder, wherein the firebox cylinder is housed outside the firebox; a set of vanes, each of the vanes is obliquely arranged on a top of the burner head cylinder, the vanes are annularly arranged, two adjacent vanes have an overlapping portion from a top view, for forming an air flow channel, the air flow channel has an air inlet and an air outlet, the air flow channel obliquely extends from the air inlet to the air outlet, the air outlet of each of the air flow channels surrounds the burner head; and a surrounding wall, the surrounding wall surrounds an outer side of the set of vanes, air reaching an inner side of the surrounding wall is guided by the vanes to the burner head when flowing through the air flow channels, to form a spiral upward air flow around the burner head, for rotating a flame generated by the burner, so that the burner generates a rotating flame.

19. The burner of claim 18, wherein inner sides of the vanes are welded to the top of the burner head cylinder, to arrange the vanes on the top of the burner head cylinder.

20. The burner of claim 18, wherein the burner comprises a rest ring, inner sides of the vanes are welded to a peripheral wall of the rest ring, the rest ring is rested on the top of the burner head cylinder, to arrange the vanes on the top of the burner head cylinder.

21. The burner of any one of claims 18 to 20, wherein the burner head is liftable, when the burner head is lowered to a lowest position, a top of the burner head is below the set of vanes, when the burner head is raised to a highest position, the top of the burner head is above the set of vanes.

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