Burner and gas hob comprising same

Abstract

The utility model provides a kind of combustor and the gas stove comprising it.The combustor contains outer ring fire cover and base, both form gas mixing chamber, base is equipped with several air passage, the passage axis of air passage is along the radial direction of combustor outward obliquely upward, its projection on the outer circumferential wall surface of base is outside the range of outer circumferential wall, cross section changes from small to big along the radial direction outward.The design makes the radial outer end opening of air passage completely exposed to the outside of the outer circumferential wall of base, mold core can be inserted from external oblique direction forming, after forming, base does not need to be ejected, it can be directly extracted from external oblique direction, avoids the space interference problem of mold core mechanism and base when designing radially horizontally, and the cross section of air passage changes from small to big along the radial outward direction to further reduce the difficulty of core pulling machining.

Description

Technical Field

[0001] This utility model relates to the field of gas equipment technology, and in particular to a burner and a gas stove containing the burner. Background Technology

[0002] Currently, the gas passage in the mixing chamber of the burner is often arranged radially in the base. However, under this layout, the mold of the gas passage will interfere with the outer peripheral wall or other structures of the base during the core-pulling process, which makes it difficult to manufacture the mold for the gas passage.

[0003] Therefore, how to rationally arrange the air passages in the base and thus reduce the processing and manufacturing difficulty of the air passages has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect that the mold core-pulling processing of the gas passage of the burner is difficult in the prior art, and to provide a burner and a gas stove containing the burner.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A burner includes an outer ring flame cap and a base. The outer ring flame cap is disposed above the base to jointly form a mixing chamber. The base includes a plurality of gas passages. The channel axis of the gas passages is obliquely upward along the radial outward direction of the burner. The projection of the gas passages onto the surface of the outer peripheral wall of the base is outside the range of the outer peripheral wall. The cross-section of the gas passages gradually increases in size along the radial outward direction.

[0007] By setting the air passage obliquely upwards along the radial outward direction of the burner, and ensuring that the projection of the air passage onto the outer peripheral wall of the base is outside the area of ​​the outer peripheral wall, it means that the radially outer end opening of the passage is completely exposed to the outside of the outer peripheral wall of the base. The core can be directly inserted into the molding position from the outside of the base along an oblique direction. After molding, there is no need to eject it from the base; the core can be directly pulled out from the outside along an oblique direction. This avoids the problem of spatial interference between the mold core-pulling mechanism and other structures of the base that is prone to occur in radially horizontal designs. Furthermore, the gradual change in cross-section of the air passage from small to large along the radial outward direction further facilitates smooth core pulling, reducing processing difficulty and losses.

[0008] Preferably, the burner further includes several riveting components, and the outer ring flame cap is fixedly connected to the base through the several riveting components.

[0009] By using external force to plastically deform the head of the riveted part, an interference fit and mechanical interlocking structure is formed with the fixing hole of the base. This type of connection has no hidden dangers such as thread gaps. Even if the outer ring flame cap expands and contracts due to high temperature, the riveted structure can still firmly lock the outer ring flame cap through the deformation allowance, avoiding structural inconsistencies such as thread stripping caused by thermal stress in the original bolt connection and other structures.

[0010] Preferably, a plurality of first fixing holes are provided on the periphery of the outer ring fire cover, and a plurality of second fixing holes corresponding one-to-one with the first fixing holes are provided on the outer peripheral wall of the base, and the riveting member passes through the corresponding first fixing hole and second fixing hole to form a riveting.

[0011] And / or, the riveting component is a single-sided flower-shaped rivet.

[0012] The first and second fixing holes are respectively opened on the periphery of the outer ring flame cap and the outer peripheral wall of the base, and are connected by riveting fittings. This directly limits the radial displacement of the outer ring flame cap caused by high-temperature thermal expansion and contraction and flame impact. The riveting fittings are made of flower-shaped rivets, which can effectively prevent slippage from the fixing holes due to vibration, thermal expansion and contraction, etc. Furthermore, the single-sided flower-shaped rivet only requires pressure to be applied on one side to complete the riveting assembly, further improving assembly and maintenance efficiency.

[0013] Preferably, the base has a protrusion structure corresponding to the second fixing hole in the height direction of the rivet joint between the outer ring fire cover and the base, and at least a portion of each second fixing hole is formed on the corresponding protrusion structure.

[0014] The protruding structure extends along the height of the joint between the base and the outer ring flame cap, providing additional space for the rivet head at the top of the base. This ensures that the head of the rivet can deform sufficiently during riveting, thereby improving the riveting strength. Furthermore, the second fixing hole is partially opened on the protruding structure, allowing it to fully match the height of the first fixing hole on the outer ring flame cap, thus preventing insufficient drilling height in the base after the first fixing hole is opened.

[0015] Preferably, the base further includes a partition structure, which is provided on both sides of the outlet of the air passage.

[0016] By setting up baffle structures on both sides of the outlet of the gas passage, when the overflow liquid flows into the mixing chamber through the flame holes of the outer ring burner, the baffle structures can block the overflow liquid from flowing into the gas passage, avoiding problems such as blockage and malfunction of the gas passage, and ensuring smooth gas flow.

[0017] Preferably, the height of the partition structure is less than or equal to the height of the flame hole of the outer ring flame cap.

[0018] If the height of the baffle structure exceeds the height of the burner hole of the outer ring burner cap, it will create an excessive physical obstruction to the premixed gas flowing from the outlet of the gas passage to the burner hole. This will cause the gas flow to have to overcome greater resistance to reach the burner hole, reducing the gas flow rate and resulting in insufficient power for the burner hole to ignite. However, when the height of the baffle structure is less than or equal to the height of the burner hole, the gas flow can flow smoothly along the top of the baffle structure to the burner hole without having to detour or overcome excessive obstruction. This ensures that the gas enters the burner hole at the designed flow rate, maintaining a stable flame shape and heating power.

[0019] Preferably, the inner wall of the outer ring flame cap is covered with an anti-rust coating.

[0020] The inner wall of the outer ring burner is in direct contact with the premixed fuel gas in the mixing chamber, and is prone to rust due to oxidation and corrosion. By covering the inner wall of the outer ring burner with an anti-rust coating, the corrosion path can be blocked, thus adapting to long-term high-temperature conditions and extending the service life of the outer ring burner.

[0021] Preferably, the fitting gap between the outer ring fire cap and the base is in the range of 0.19cm to 0.21cm.

[0022] By setting the fit gap between the outer ring flame cap and the base to between 0.19cm and 0.21cm, it is ensured that the user can smoothly place the outer ring flame cap on the base, and that the fit between the outer ring flame cap and the base is guaranteed to prevent loosening or air leakage.

[0023] Preferably, the diameter of the flame hole on the outer ring flame cap corresponding to the air outlet of the air passage is smaller than the diameter of the other flame holes on the outer ring flame cap, so that the flame length of all the flame holes on the outer ring flame cap is equal.

[0024] By reducing the diameter of the outlet holes on the outer ring of the corresponding gas outlet channel, the amount of gas emitted from a single outlet hole is reduced. This avoids the flame length at the outlet hole being higher than that of the surrounding outlet holes due to the flow velocity of the gas passage. It also makes the airflow velocity of the outlet hole in the corresponding gas mixing chamber outlet channel close to that of the surrounding outlet holes, resulting in uniform gas emission and similar flame length across the entire outer ring of the gas outlet channel.

[0025] This utility model provides a gas stove, which includes the burner described above.

[0026] The significant advantages of this invention are as follows: By setting the air passage obliquely upwards in the radial outward direction of the burner, and ensuring that the projection of the air passage onto the outer peripheral wall of the base is outside the area of ​​the outer peripheral wall, the radial outer end opening of the passage is fully exposed on the outer side of the base's outer peripheral wall. This allows the core to be directly inserted into the molding position from outside the base along an oblique direction. After molding, there is no need to eject it from the base; the core can be directly pulled out from the outside along an oblique direction. This avoids the problem of spatial interference between the mold core-pulling mechanism and other structures of the base when the design is radially horizontal. Furthermore, the gradually changing cross-section design of the air passage further facilitates smooth core pulling, reducing processing difficulty and losses. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the assembly of the outer ring flame cap and the base of a burner according to an embodiment of the present invention.

[0028] Figure 2 This is a three-dimensional schematic diagram of the base according to an embodiment of the present utility model.

[0029] Figure 3 This is a cross-sectional schematic diagram of the base according to an embodiment of the present invention.

[0030] Figure 4 This is a three-dimensional schematic diagram of a burner according to an embodiment of the present invention.

[0031] Figure 5 This is a three-dimensional schematic diagram of the outer ring flame cap according to an embodiment of the present invention.

[0032] Figure 6 This is a three-dimensional schematic diagram of a riveting component according to an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] Burner 1

[0035] Outer ring fire cap 10

[0036] First fixing hole 11

[0037] Inner wall 12

[0038] Base 20

[0039] Air passage 21

[0040] Channel axis 210

[0041] Air outlet 211

[0042] partition structure 22

[0043] Second fixing hole 23

[0044] 24 raised structures

[0045] outer peripheral wall 25

[0046] Mixing chamber 30

[0047] Riveted parts 40

[0048] Head 41

[0049] Rear 42

[0050] The projection A of the air passage on the outer peripheral wall of the base

[0051] The area B of the outer peripheral wall Detailed Implementation

[0052] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0053] like Figures 1-6 As shown, this utility model provides a burner 1, which includes an outer ring flame cap 10 and a base 20. The outer ring flame cap 10 is disposed above the base 20 to jointly form a mixing chamber 30. The base 20 includes three air passages 21. The channel axis 210 of the air passages 21 is obliquely upward along the radial outward direction of the burner 1. The projection A of the air passages 21 on the surface of the outer peripheral wall 25 of the base 20 is located outside the area B of the outer peripheral wall 25 (see details). Figure 3 As shown in the figure, the cross-section of the air passage 21 increases from small to large in the radial outward direction.

[0054] In this embodiment, by setting the air passage 21 obliquely upward along the radial outward direction of the burner 1, and with the projection A of the air passage 21 on the surface of the outer peripheral wall 25 of the base 20 located outside the range B of the outer peripheral wall 25, it means that the air outlet 211 of the air passage 21 is completely exposed to the outside of the outer peripheral wall 25 of the base 20. The core can be directly inserted into the molding position from the outside of the base 20 obliquely. After molding, there is no need to eject the base 20; the core can be directly pulled out from the outside obliquely. This avoids the problem of spatial interference between the core pulling of the mold and other structures of the base 20 when the radial horizontal design is used. Furthermore, the cross-section of the air passage 21 is a gradually increasing design along the radial outward direction, which further facilitates smooth core pulling and reduces processing difficulty and losses.

[0055] like Figures 1-6 As shown, the burner 1 also includes three riveting pieces 40, and the outer ring burner cap 10 is fixedly connected to the base 20 through the three riveting pieces 40.

[0056] By using external force, the riveting component 40 forms an interference fit and mechanical engagement structure between the base 20 and the outer ring flame cap 10. This connection method eliminates potential problems such as thread clearance. Even if the outer ring flame cap 10 expands and contracts due to high temperature, the riveting structure can still firmly lock the outer ring flame cap 10 through the deformation allowance, avoiding structural inconsistencies such as thread stripping caused by thermal stress in the original bolt connection and other structures. In this embodiment, the number of riveting components 40 is three. In other embodiments, the number of riveting components 40 can be appropriately adjusted according to actual fitting requirements. This part belongs to the prior art in this field and will not be described in detail here.

[0057] like Figures 1-6 As shown, three first fixing holes 11 are provided on the periphery of the outer ring fire cover 10, and three second fixing holes 23 corresponding to the first fixing holes 11 are provided on the outer peripheral wall 25 of the base 20. The riveting piece 40 passes through the corresponding first fixing hole 11 and second fixing hole 23 to form a riveting. The riveting piece 40 is a single-sided flower-shaped rivet. The rear part 42 of the single-sided flower-shaped rivet is circular, and the head 41 is flower-shaped. The diameter of the head 41 is larger than the diameter of the rear part 42. During riveting, the head 41 is first passed through the first fixing hole 11 and then pressure is applied to press the riveting piece 40 into the corresponding second fixing hole 23.

[0058] In this embodiment, the first fixing hole 11 and the second fixing hole 23 are respectively opened on the periphery of the outer ring flame cap 10 and connected to the outer peripheral wall 25 of the base 20 through the riveting member 40, which can directly limit the radial displacement of the outer ring flame cap 10 caused by high temperature thermal expansion and contraction and flame impact. The riveting member 40 is set as a flower-shaped rivet, which can effectively prevent it from slipping out of the fixing hole due to vibration, thermal expansion and contraction and other factors. Moreover, the single-sided flower-shaped rivet only needs to apply pressure on one side to complete the riveting assembly, further improving the assembly and maintenance efficiency.

[0059] like Figures 1-6 As shown, the base 20 has three protruding structures 24 corresponding to the second fixing holes 23 in the height direction of the riveting point between the outer ring fire cover 10 and the base 20. A portion of each second fixing hole 23 is opened on the corresponding protruding structure 24.

[0060] In this embodiment, a protruding structure 24 is added and extends in the height direction at the riveting point between the base 20 and the outer ring flame cap 10. This provides additional space for the rivet head 41 at the top of the base 20, ensuring that the head 41 of the rivet 40 can deform sufficiently during riveting, thereby improving the riveting strength. Furthermore, part of the second fixing hole 23 is opened on the protruding structure 24, so that the second fixing hole 23 can fully adapt to the height of the first fixing hole 11 opened on the outer ring flame cap 10, avoiding insufficient drilling height of the corresponding second fixing hole 23 after the first fixing hole 11 is opened.

[0061] like Figures 1-6As shown, the base 20 also includes three sets of six partition structures 22, which are respectively set on both sides of the outlet of each air passage 21.

[0062] In this embodiment, by setting baffle structures 22 on both sides of the outlet of each gas passage 21, when the overflow liquid flows into the mixing chamber 30 through the flame hole of the outer ring flame cap 10, the baffle structures 22 can block the overflow liquid from flowing into the gas passage 21, avoiding problems such as blockage and functional failure of the gas passage 21, and ensuring smooth flow of gas.

[0063] like Figures 1-6 As shown, the height of the baffle structure 22 is less than or equal to the height of the fire hole of the outer ring fire cap 10.

[0064] In this embodiment, if the height of the baffle structure 22 exceeds the height of the flame hole of the outer ring flame cap 10, it will create an excessive physical obstruction to the premixed gas flowing from the outlet 211 of the gas passage 21 to the flame hole. This will cause the airflow to have to overcome greater resistance to reach the flame hole, reducing the gas flow rate and resulting in insufficient power for the flame hole to ignite. However, when the height of the baffle structure 22 is less than or equal to the height of the flame hole, the airflow can flow smoothly along the top of the baffle structure 22 to the flame hole without having to detour or overcome excessive obstruction. This ensures that the gas enters the flame hole at the designed flow rate, maintaining a stable flame shape and heating power.

[0065] like Figures 1-6 As shown, the inner wall 12 of the outer ring flame cap 10 is covered with an anti-rust coating.

[0066] In this embodiment, the inner wall 12 of the outer ring burner 10 is in direct contact with the premixed gas in the mixing chamber 30, and is prone to rust due to oxidation and corrosion. By covering the inner wall 12 of the outer ring burner 10 with an anti-rust coating, the corrosion path can be blocked, thereby adapting to long-term high-temperature conditions and extending the service life of the outer ring burner 10.

[0067] In this embodiment, the fitting gap between the outer ring fire cap 10 and the base 20 ranges from 0.19cm to 0.21cm.

[0068] By setting the gap between the outer ring flame cap 10 and the base 20 to between 0.19cm and 0.21cm, it is ensured that the user can smoothly place the outer ring flame cap 10 on the base 20, and that the fit between the outer ring flame cap 10 and the base 20 is secure to prevent loosening or air leakage.

[0069] In this embodiment, the diameter of the flame holes (specifically, within the range of four flame holes on each of the left and right sides of the outlet 211 of the corresponding air passage 21 on the outer ring flame cap 10) is smaller than the diameter of the other flame holes on the outer ring flame cap 10, so that the flame length of all flame holes on the outer ring flame cap 10 is equal. By reducing the diameter of the flame holes of the outlet 211 of the corresponding air passage 21 on the outer ring flame cap 10, the amount of air emitted from a single flame hole is reduced, avoiding the flame length of the flame hole of the outlet 211 being higher than the flame length of the surrounding flame holes due to the flow velocity of the air passage 21. This makes the airflow velocity of the flame hole of the corresponding air passage of the mixing chamber 30 close to the airflow velocity of the surrounding flame holes, so that the air emission of the entire outer ring flame cap 10 is uniform and the flame length is similar. In this embodiment, the flame holes corresponding to the air outlet 211 of the air passage 21 are specifically defined as the range of four flame holes on each of the left and right sides of the air outlet 211. In other embodiments, the range can be set according to the distribution relationship of the flame holes on the outer ring flame cap 10. This part belongs to the prior art in this field and will not be described in detail here.

[0070] This utility model provides a gas stove, which includes the burner 1 as described above.

[0071] In this embodiment, the gas stove can be controlled by a voice module (not shown in the figure), which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the gas stove to perform corresponding operations, thereby realizing intelligent control of the gas stove and improving the user experience.

[0072] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A burner comprising an outer ring flame cap and a base, the outer ring flame cap being disposed above the base to jointly enclose a mixing chamber, the base comprising a plurality of gas passages, characterized in that, The channel axis of the gas passage is obliquely upward along the radial outward direction of the burner. The projection of the gas passage onto the surface of the outer peripheral wall of the base is outside the range of the outer peripheral wall. The cross-section of the gas passage gradually increases in size along the radial outward direction.

2. The burner as claimed in claim 1, characterized in that, The burner also includes several riveting components, and the outer ring flame cap is fixedly connected to the base through these riveting components.

3. The burner as described in claim 2, characterized in that, The outer ring fire cover has several first fixing holes on its periphery, and the base has several second fixing holes that correspond one-to-one with the first fixing holes on its outer peripheral wall. The riveting component passes through the corresponding first fixing hole and second fixing hole to form a riveting connection. And / or, the riveting component is a single-sided flower-shaped rivet.

4. The burner as described in claim 3, characterized in that, The base is provided with protrusions corresponding to the second fixing holes in the height direction of the rivet joint between the outer ring fire cover and the base, and at least a portion of each second fixing hole is formed on the corresponding protrusion.

5. The burner as claimed in claim 1, characterized in that, The base also includes a partition structure, which is provided on both sides of the air outlet of the air passage.

6. The burner as described in claim 5, characterized in that, The height of the partition structure is less than or equal to the height of the flame holes in the outer ring flame cap.

7. The burner as claimed in claim 1, characterized in that, The inner wall of the outer ring fire cap is covered with an anti-rust coating.

8. The burner as claimed in claim 1, characterized in that, The fitting gap between the outer ring fire cap and the base ranges from 0.19cm to 0.21cm.

9. The burner as claimed in claim 1, characterized in that, The diameter of the flame hole on the outer ring flame cap corresponding to the air outlet of the air passage is smaller than the diameter of the other flame holes on the outer ring flame cap, so that the flame length of all the flame holes on the outer ring flame cap is equal.

10. A gas stove, characterized in that, The gas stove includes a burner as described in any one of claims 1 to 9.

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