Combustor and stove

Abstract

The portable stove comprises the burner and a plurality of independent injection pipes, the burner comprises a plurality of fire distribution rings, a first fire distribution ring and a second fire distribution ring, and the fire distribution rings are distributed in the vertical direction; the first fire distribution ring is provided with a plurality of first fire outlet holes for discharging fire towards the center of the burner, the second fire distribution ring is provided with a plurality of second fire outlet holes for discharging fire towards the center of the burner in a gathering mode, and the second fire outlet holes are arranged to be rotary fire outlet holes. The contact area of flames and the pan bottom is increased, so that the pan bottom is heated more uniformly, the heat conduction coefficient is improved, and the combustion heat loss is reduced.

Description

Technical Field

[0001] The present invention relates to the field of burners, and particularly to a burner and a stove. Background Art

[0002] At present, the burner combustion structure of stoves on the market is generally set in the form of direct flame spraying structure, single-ring structure, etc. The combustion efficiency needs to be improved, and there is a certain heat loss, which is not conducive to energy conservation. Through research on stoves on the market and literature reading, considering the actual production benefits, it is concluded that stove energy conservation can be considered and improved from two aspects. One is how to make the fuel burn fully, and the other is how to increase heat conduction to the cookware after combustion to reduce heat loss. This application mainly improves the burner structure by combining these two factors. Summary of the Invention

[0003] An object of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a burner.

[0004] The present invention also provides a stove having the above burner.

[0005] According to a first aspect embodiment of the present invention, a burner is provided, including: a plurality of fire distribution rings distributed vertically, including a first fire distribution ring and a second fire distribution ring; the first fire distribution ring is provided with a plurality of first fire outlet holes that fire towards the center of the burner, the second fire distribution ring is provided with a plurality of second fire outlet holes that converge towards the center of the burner, and the second fire outlet holes are set as swirling fire outlet holes.

[0006] Beneficial effects: This burner includes a plurality of fire distribution rings distributed vertically, a first fire distribution ring and a second fire distribution ring; the first fire distribution ring is provided with a plurality of first fire outlet holes that fire towards the center of the burner, the second fire distribution ring is provided with a plurality of second fire outlet holes that converge towards the center of the burner, and the second fire outlet holes are set as swirling fire outlet holes. The swirling fire setting not only makes the fuel contact the air more fully and the combustion more complete, but also increases the contact area between the flame and the bottom of the pot, makes the bottom of the pot heat more evenly, improves the heat conduction coefficient, and reduces the combustion heat loss.

[0007] According to the burner described in the first aspect embodiment of the present invention, the first fire distribution ring and the second fire distribution ring are arranged vertically from low to high, and the diameter of the second fire distribution ring is not less than the diameter of the first fire distribution ring.

[0008] According to the burner described in the first aspect embodiment of the present invention, the diameter of the first fire distribution ring is 16 mm to 60 mm, and the diameter of the second fire distribution ring is 60 mm to 160 mm.

[0009] According to the burner described in the first aspect embodiment of the present invention, the first fire outlet hole is set as a direct fire outlet hole or a swirling fire outlet hole.

[0010] The burner according to the embodiment of the first aspect of the present invention, wherein the direct fire outlet holes are arranged as circular fire outlet holes on the same horizontal plane, and the swirling fire outlet holes are arranged as sawtooth-shaped holes or slit-shaped holes or holes on different horizontal planes.

[0011] The burner according to the embodiment of the first aspect of the present invention, wherein the swirling fire outlet holes of the first fire outlet hole and the second fire outlet hole are arranged as grooves with a downward-opening and gradually expanding shape.

[0012] The burner according to the embodiment of the first aspect of the present invention, wherein the first fire distribution ring is arranged at the bottom of the burner to fire vertically upward or obliquely upward, or the first fire distribution ring is arranged on the side wall of the burner to fire converging toward the center; the second fire distribution ring is arranged on the side wall of the burner, and the second fire distribution ring fires converging toward the center of the burner.

[0013] According to an embodiment of the second aspect of the present invention, there is provided a stove, comprising: the burner according to any one of the above; a plurality of ejector pipes, the ejector pipes are independently arranged, and each ejector pipe is provided with an air inlet.

[0014] Advantageous effects: This stove includes a burner and a plurality of ejector pipes. The ejector pipes are independently arranged, and each ejector pipe is provided with an air inlet. By providing a plurality of internal and external ejector structures that cooperate well with the burner, the combustion efficiency of the burner is improved.

[0015] For the stove according to the second aspect of the present invention, the air inlets are arranged on the same vertical plane and are offset to increase the distance between the air inlets.

[0016] For the stove according to the second aspect of the present invention, the air inlets are arranged on different vertical planes to increase the distance between the air inlets. Description of the Drawings

[0017] The present invention will be further described below in conjunction with the drawings and embodiments;

[0018] Figure 1 It is a schematic diagram of the first form of the burner according to the embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the second form of the burner according to the embodiment of the present invention;

[0020] Figure 3 It is a sectional view of the internal ejector of the first form of the burner according to the embodiment of the present invention;

[0021] Figure 4 It is a sectional view of the external ejector of the first form of the burner according to the embodiment of the present invention;

[0022] Figure 5Internal injection sectional view of the first form of the burner in the embodiment of the present invention;

[0023] Figure 6 External injection sectional view of the first form of the burner in the embodiment of the present invention. Detailed implementation manners

[0024] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0025] In the description of the present invention, it should be understood that for the orientation description, such as up, down, front, back, left, right, top surface, bottom, inner side, outer side, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0026] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0028] Currently, the burner combustion structure of stoves on the market is generally set as a single-ring structure and a direct-flame structure, which has certain heat losses and is not conducive to energy conservation. After researching stoves on the market and reading literature, considering the actual production benefits, it is concluded that stove energy conservation can be considered and improved from two aspects. One is how to make the fuel burn fully, and the other is how to increase heat conduction to the cookware after combustion and reduce heat loss. This application improves the burner structure by combining these two factors.

[0029] This application provides research and investigation and summarizes the following table of reasons related to stove heat loss and improvement directions:

[0030]

[0031] After conducting a thorough investigation of the structures of portable stoves on the market, as well as relevant patents and literature, we have summarized the feasible directions for energy-saving improvements in portable stoves. Referring to the above table, considering the R & D difficulty and the feasibility of actual production, we finally selected the stove head structure for improvement, taking into account two main factors: making the fuel burn more fully and reducing heat loss after combustion. In addition, the combustion structures of the stove heads of some stoves on the market are set to spray fire outwardly, resulting in relatively large heat loss and being unfavorable for energy conservation. Therefore, referring to the above table, this application combines multiple factors to improve the stove head. The swirling fire setting not only makes the fuel contact the air more fully and burn more completely, but also increases the contact area between the flame and the bottom of the pot, making the bottom of the pot heat more evenly, improving heat conduction, enabling the thermal energy generated by fuel combustion to be fully transferred to heat the cookware, and reducing combustion heat loss; the multi-layer distributed fire rings enable the bottom fuel to burn fully multiple times; the heat transfer coefficient of the bottom of the pot is significantly improved, and after the fuel burns, the heat loss is reduced; in addition, the multi-layer fire rings also have the effect of strengthening the firepower; the multiple first fire holes that fire towards the center of the burner and the multiple second fire holes that converge towards the center of the burner have the effect of reducing combustion heat loss compared to the flames that spray outwards in all directions.

[0032] Referring to Figures 1 to 2 , a burner is provided with multiple vertically distributed sub-fire rings, including at least a first sub-fire ring 100 and a second sub-fire ring 200. While the multi-fire rings distributed vertically strengthen the firepower, the flame of the sub-fire ring provided at the bottom end can be combusted again and burn fully, reducing heat loss.

[0033] Referring to Figure 1 , in some embodiments, a burner is provided with multiple vertically distributed sub-fire rings, including a first sub-fire ring 100 and a second sub-fire ring 200. The first sub-fire ring 100 is provided with multiple first fire holes 110 that fire towards the center of the burner, and the second sub-fire ring 200 is provided with multiple second fire holes 210 that converge towards the center of the burner. The second fire holes are set as swirling fire holes.

[0034] Swirling fire plays a role in shrinking, expanding, and guiding the flame through forms such as groove diameter changes and groove setting orientations, controlling the ejection path and shape of the flame, so as to have a larger contact surface with the air.

[0035] It is easily understandable that the first sub-fire ring 100 is provided with multiple fires towards the center of the burner, and the second sub-fire ring 200 is provided with multiple fires converging towards the center of the burner. Firing towards the center of the burner not only includes converging towards the center of the burner, and the first sub-fire ring 100 and the second sub-fire ring 200 are arranged on the side wall of the burner; it also includes firing upwards along the vertical center direction of the burner, and the first sub-fire device is arranged at the bottom of the burner.

[0036] In some embodiments, the first sub-fire ring 100 and the second sub-fire ring 200 are arranged vertically from low to high, and the diameter of the second sub-fire ring 200 is not less than that of the first sub-fire ring 100. The structure of the sub-fire rings gradually expanding from low to high can effectively improve the heat dissipation loss and enhance the thermal efficiency of the portable stove.

[0037] Furthermore, in some embodiments, the diameter range of the first sub-fire ring 100 is 16 mm to 60 mm, and the diameter range of the second sub-fire ring 200 is 60 mm to 160 mm. Setting the diameter of the sub-fire rings within this data range results in good combustion performance of the burner head.

[0038] In a specific embodiment, the first sub-fire ring 100 is provided with a plurality of first fire holes 110 that discharge fire towards the center of the burner, and the second sub-fire ring 200 is provided with a plurality of second fire holes 210 that converge and discharge fire towards the center of the burner. The multi-sub-fire rings distributed vertically strengthen the firepower, and at the same time, the flame of the sub-fire ring arranged at the bottom can be secondary combusted and fully combusted, reducing heat loss.

[0039] Further, in some of these embodiments, the second sub-fire ring 200 is annular, and a plurality of second fire holes 210 are distributed on the circumferential periphery; the first sub-fire ring 100 is annular, and a plurality of first fire holes 110 are distributed on the circumferential periphery.

[0040] In some embodiments, the first sub-fire ring 100 is arranged on the side wall of the burner. The first fire holes 110 of the first sub-fire ring 100 are located on the same horizontal plane, and the first sub-fire ring 100 discharges fire horizontally towards the center, reducing the heat loss caused by the divergence of the flame of the first fire holes 110 at this time, and having a higher combustion efficiency. The second sub-fire ring is arranged on the side wall of the burner, and the second sub-fire ring discharges fire towards the center of the burner.

[0041] It is easily understandable that, in some embodiments, the first fire hole is set as a groove with an opening downward, discharging fire downward, and the groove diameter is the same, or the groove opening is gradually expanding downward, or the groove can be set in a slit form. In some other embodiments, the first fire hole is set as a groove with an opening upward, and the groove diameter is the same, or the groove opening is gradually expanding upward, or the groove can be set in a slit form. Among them, both the gradually expanding downward setting of the groove opening or the slit form setting of the groove can achieve a better swirling fire effect, and the groove with a changing hole diameter can achieve the effect of swirling the flame. The fire hole groove extending obliquely on different horizontal planes can also have better swirling fire performance than the fire hole groove on the same horizontal plane by means of the inclined groove guiding and splitting the flame; both the gradually expanding downward setting of the groove opening or the same groove diameter setting of the groove opening downward or the slit form setting of the groove can achieve a better combustion effect. The gradually expanding downward setting of the groove opening will make the flame first extend downward and then upward for combustion, making full contact with the air. The length extension direction of the groove can be parallel to the vertical direction or not parallel to the vertical direction. When the length extension direction of the groove is not parallel to the vertical direction, the swirling fire performance is good.

[0042] In some other embodiments, the second flame-distributing ring 200 is annular, and a plurality of second flame outlets 210 are arranged at intervals on the circumferential periphery; the first flame-distributing ring 100 is a solid circle, and a plurality of first flame outlets 110 are arranged in a honeycomb pattern on the surface of the solid circle.

[0043] Further, the first flame-distributing ring 100 is arranged at the bottom of the burner. The first flame outlets 110 of the first flame-distributing ring 100 are all located on the same horizontal plane, and the first flame-distributing ring emits flames vertically upward. At this time, the distance between the flames of the first flame outlets 110 and the bottom of the pot is the shortest distance, and the firepower is the strongest. The second flame-distributing ring is arranged on the side wall of the burner, and the second flame-distributing ring converges the flames towards the center of the burner. In some other embodiments, the first flame-distributing ring 100 is arranged at the bottom of the burner. The first flame outlets 110 of the first flame-distributing ring 100 are located on different horizontal planes, and the first flame-distributing ring emits flames obliquely upward. At this time, the fuel contacts the air more fully, the combustion is more complete, and the combustion efficiency is higher. The second flame-distributing ring is arranged on the side wall of the burner, and the second flame-distributing ring converges the flames towards the center of the burner.

[0044] It is easy to understand that in addition to being set as circular holes, the first flame outlets can also be set as triangular holes, strip holes and other flame outlet shapes that are convenient for improving the combustion efficiency.

[0045] In a specific embodiment, the first flame-distributing ring 100 is provided with a plurality of first flame outlets 110 that emit flames towards the center of the burner, and the second flame-distributing ring 200 is provided with a plurality of second flame outlets 210 that converge the flames towards the center of the burner. The second flame outlets 210 are distributed on the side wall of the burner. The second flame outlets 210 are set to generate swirling flames. The second flame outlets 210 are set as slots with openings facing downwards, and the slot diameters are the same, or the slot openings gradually expand downwards, or the slots can be set in a slit-like manner. In some other embodiments, the second flame outlets 210 are set as slots with openings facing upwards, and the slot diameters are the same, or the slot openings gradually expand upwards, or the slots can be set in a slit-like manner. Among them, the slot opening gradually expanding downwards or the slot being set in a slit-like manner can both achieve a good swirling flame effect. The slot with a changing aperture plays an effect of swirling the flame. In addition, the oblique flame emission on different horizontal planes also has better swirling flame performance than the flame outlet slots on the same horizontal plane; the slot opening gradually expanding downwards, the slot opening with the same diameter facing downwards or the slot being set in a slit-like manner can all achieve a good combustion effect. The slot opening gradually expanding downwards will cause the flame to extend and burn downwards first and then upwards, and contact the air fully. The extending direction of the slot can be parallel to the vertical direction or not parallel to the vertical direction. When the extending direction of the slot is not parallel to the vertical direction, the swirling flame performance is good. The swirling flame setting of the second flame outlets 210 not only makes the fuel contact the air more fully and the combustion more complete, but also increases the contact area between the flame and the bottom of the pot, makes the bottom of the pot heat more evenly, and the residence time of the combustion products on the bottom of the pot is longer, so that the heat transfer coefficient with the bottom of the pot is significantly improved, and the heat loss is reduced after the fuel is burned.

[0046] Refer to Figure 1, the first fire outlet 110 is provided with a swirling fire outlet 111, and the second fire outlet 210 is provided with a swirling fire outlet 211. The swirling fire setting of the fire outlet not only makes the fuel contact the air more fully, burns more fully, but also increases the contact area between the flame and the bottom of the pot, makes the bottom of the pot heat more evenly, and makes the residence time of the combustion products on the bottom of the pot longer. As a result, the heat transfer coefficient with the bottom of the pot is significantly improved, and the heat loss is reduced after the fuel burns.

[0047] In a specific embodiment, the second fire distribution ring converges and swirls towards the center, and the second fire distribution holes are set as inclined grooves on the same horizontal plane. The included angle between the extending direction of the inclined groove and the tangent direction of the second fire distribution ring passing through the sealed end of the inclined groove is 0 to 90°, and the inclined grooves all extend in the same clockwise or counterclockwise direction, and the flames in one fire distribution ring swirl in the same direction.

[0048] In a specific embodiment, the first fire distribution ring converges and swirls towards the center, and the first fire distribution holes are set as inclined grooves on the same horizontal plane. The included angle between the extending direction of the inclined groove and the tangent direction of the second fire distribution ring passing through the sealed end of the inclined groove is 30 to 60°, and the inclined grooves all extend in the same clockwise or counterclockwise direction, and the flames in one fire distribution ring swirl in the same direction.

[0049] Refer to Figure 2 , the first fire outlet 110 is provided with a direct injection fire outlet 112, and the second fire outlet 210 is provided with a swirling fire outlet 211. The setting of the direct injection fire outlet 112 makes the firepower concentrated and the heating effect good. The swirling fire setting of the second fire outlet 210 not only makes the fuel contact the air more fully, burns more fully, but also increases the contact area between the flame and the bottom of the pot, makes the bottom of the pot heat more evenly, and makes the residence time of the combustion products on the bottom of the pot longer. As a result, the heat transfer coefficient with the bottom of the pot is significantly improved, and the heat loss is reduced after the fuel burns.

[0050] In a specific embodiment, the direct injection fire outlet is set as a circular fire outlet on the same horizontal plane, such as triangular, water droplet-shaped, etc. The swirling fire outlet can be set as a sawtooth shape, a slit groove shape or other shapes convenient for swirling fire.

[0051] Refer to Figure 2 , the swirling fire outlet is set as a sawtooth shape, which is convenient for swirling fire.

[0052] Refer to Figure 2 , both the first fire outlet 110 and the second fire outlet 210 are provided with a fire distribution net 300. The setting of the fire distribution net 300 not only makes the fuel burn fully, but also makes the bottom of the pot heat evenly.

[0053] Furthermore, the fire distribution net 300 can be set as a honeycomb shape to make the fuel burn fully and make the bottom of the pot heat evenly.

[0054] Refer to Figure 1, a ventilation hole 400 is provided between the first flame outlet hole 110 and the second flame outlet hole 210. The ventilation hole 400 can be set as a round hole or a special-shaped through hole, and the special-shaped through hole can adopt shapes such as a triangle.

[0055] Another embodiment provided by the present invention is a stove, including the burner of any of the above embodiments and a plurality of ejector pipes 500. The plurality of ejector pipes 500 are independently arranged, and each ejector pipe is provided with an air inlet 510.

[0056] Referring to Figure 2 , the air inlets 510 are arranged on the same vertical plane and are staggered to increase the distance between the air inlets, so that the air supply is sufficient, the combustion is sufficient, and the energy is saved.

[0057] Referring to Figure 1 , the air inlets 510 are arranged on different vertical planes to increase the distance between the air inlets, so that the air supply is sufficient, the combustion is sufficient, and the energy is saved.

[0058] In a specific embodiment, the swirling flame holes of the second flame outlet holes can be set as slit-shaped holes. The thermal efficiency of the slit-shaped holes is between 55% and 60%. When the shape of the direct combustion flame first flame outlet hole is a small round hole, the thermal efficiency is between 55% and 58%.

[0059] Referring to Figure 3 and Figure 4 are schematic diagrams of the air ejection profiles where the first sub-flame ring and the second sub-flame ring are both arranged on the side wall of the burner, Figure 3 is a schematic diagram of the air ejection profile inside the first sub-flame ring, Figure 4 is a schematic diagram of the air ejection profile outside the second sub-flame ring. The internally ejected air is transported to the first sub-flame ring located on the side wall of the burner to participate in combustion, and the externally ejected air is transported to the second sub-flame ring located on the side wall of the burner to participate in combustion. By setting the internal and external ejection structures that cooperate well with the burner, the combustion efficiency of the burner is improved.

[0060] Referring to Figure 5 and Figure 6 are schematic diagrams of the air ejection profiles where the first sub-flame ring is arranged at the bottom of the burner and the second sub-flame ring is arranged on the side wall of the burner, Figure 5 is a schematic diagram of the air ejection profile inside the first sub-flame ring, Figure 6 is a schematic diagram of the air ejection profile outside the second sub-flame ring. The internally ejected air is transported to the first sub-flame ring located at the bottom of the burner to participate in combustion, and the externally ejected air is transported to the second sub-flame ring located on the side wall of the burner to participate in combustion. By setting the internal and external ejection structures that cooperate well with the burner, the combustion efficiency of the burner is improved.

[0061] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A burner, characterized in that: include: A plurality of fire dividing rings distributed vertically include a first fire dividing ring and a second fire dividing ring; the first fire dividing ring is provided with a plurality of first fire outlet holes for discharging fire toward the center of the burner, the second fire dividing ring is provided with a plurality of second fire outlet holes for gathering fire toward the center of the burner, and the second fire outlet holes are configured as rotating fire outlet holes.

2. The burner according to claim 1, characterized in that: The first fire dividing ring and the second fire dividing ring are arranged vertically from low to high, and the diameter of the second fire dividing ring is not less than the diameter of the first fire dividing ring.

3. The burner according to claim 2, characterized in that: The diameter of the first fire dividing ring is 16 mm to 60 mm, and the diameter of the second fire dividing ring is 60 mm to 160 mm.

4. The burner according to claim 1, characterized in that: The first fire outlet hole is configured as a straight-spray fire outlet hole or a rotary-fire fire outlet hole.

5. The burner according to claim 4, characterized in that: The direct jet fire outlet holes are arranged as circular fire outlet holes located on the same horizontal plane, and the rotary fire outlet holes are arranged as sawtooth-shaped holes or slit-shaped holes or holes located on different horizontal planes.

6. The burner according to claim 1, characterized in that: The rotary fire outlet hole of the second fire outlet hole is configured as a groove with an opening that gradually expands downward.

7. The burner according to claim 1, characterized in that: The first fire dividing ring is arranged at the bottom of the burner to emit fire vertically upward or obliquely upward, or the first fire dividing ring is arranged on the side wall of the burner to gather fire toward the center; the second fire dividing ring is arranged on the side wall of the burner, and the second fire dividing ring gathers fire toward the center of the burner.

8. A stove, characterized in that: include: A burner according to any one of claims 1 to 7; A plurality of ejector tubes are provided, each of the ejector tubes is independently provided with an air inlet.

9. The stove according to claim 8, characterized in that: The air inlets are arranged on the same vertical plane and staggered to increase the distance between the air inlets.

10. The stove according to claim 8, characterized in that: The air inlets are arranged in different vertical planes to increase the distance between the air inlets.

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