Upper air inlet micropore burner
By setting up inverted V and thin -walled square pore units on the burner fire cover, the problem of low thermal efficiency of existing burningrs is solved, and a more efficient combustion effect is achieved.
Patent Information
- Application Number
- CN202411683148.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-01-24
AI Technical Summary
The circular pore structure of existing burners leads to a higher flame height, rapid heat dissipation and low thermal efficiency.
Design an upward air inlet microhole burner. The fire cover is provided with a convex part with an inverted V-shaped cross section, and a thin-walled square hole unit is set up on the convex part to output premixed gas to form a low flame.
Through the design of the thin-walled square hole unit, the output pressure of the premixed gas is reduced, the flame height is lower, the heat is more concentrated, the thermal efficiency is higher, and the output is more stable.
Smart Images
Figure CN119353701A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of burners, and in particular to an upper air inlet microporous burner. Background Art
[0002] Gas stoves are important kitchen appliances in the cooking process, and burners are important devices for gas stoves to achieve cooking purposes. Thermal efficiency and CO concentration in dry flue gas are two important indicators of household gas stoves. Taking atmospheric embedded stoves as an example, the national standard GB16410-2020 "Household Gas Stoves" stipulates that the thermal efficiency is ≥55% and the CO concentration in dry flue gas is ≤0.05%; GB30720-2014 "Energy Efficiency Limit Values and Energy Efficiency Grades for Household Gas Stoves" stipulates that the first-level energy efficiency thermal efficiency is ≥63%; the group standard T / CNHA1023-2020 "Leader" Standard Evaluation Requirements for Household Gas Stoves" stipulates that the advanced level requires thermal efficiency ≥70% and CO concentration in dry flue gas ≤0.03%. Therefore, it is very important to make the gas burn fully, reduce the emission of harmful flue gases, and improve the thermal efficiency of the stove.
[0003] In the fire cover structure of the burner on the market, a plurality of circular air holes are usually provided on the outer circumference of the outer ring, and the premixed gas is sprayed through the plurality of circular air holes for combustion. However, in actual use, this circular air hole structure has a high spray pressure and a relatively high flame height, which causes the heat to dissipate quickly, resulting in a relatively low thermal efficiency. Summary of the invention
[0004] In order to overcome the defects of the prior art, the present invention provides an upper air inlet microporous burner to solve the problems in the prior art.
[0005] The technical solution adopted by the present invention to solve its technical problem is: an upper air inlet microporous burner, including a burner body, a fire cover member is provided on the burner body, a convex portion with an inverted V-shaped cross-section is provided on the fire cover member, and a thin-walled square hole unit is opened on the convex portion.
[0006] The beneficial effect of the present invention is that by arranging a thin-walled square hole unit on the convex part of the fire cover, the premixed gas can output flames from the thin-walled square hole unit of the fire cover. Under the action of the thin-walled square hole unit, the output pressure of the premixed gas can be smaller than the pressure of the traditional circular air hole, so that the flame height is relatively lower, the heat dissipates more slowly, the heat is more concentrated on the bottom of the pot, and the thermal efficiency is higher. At the same time, under the action of the convex part, the output of the low flame can be made more stable.
[0007] Furthermore, the fire cover member includes an outer fire cover and an inner fire cover, the convex portion includes a first double air outlet surface located on the outer fire cover and a second double air outlet surface located on the inner fire cover, and both the first double air outlet surface and the second double air outlet surface are provided with thin-walled square hole units.
[0008] After adopting the above-mentioned further structure, double-layer flames can be output on both the outer fire cover and the inner fire cover, and the double-layer flames are output from the same fire groove. The flame height is relatively lower, and the heat dissipates more slowly, making the heat more concentrated and the thermal efficiency high.
[0009] Furthermore, the first double air outlet surface includes a first bevel ring, which is inclined toward the outer circumference of the outer fire cover, and the thin-walled square hole unit includes a first thin-walled square hole and a second thin-walled square hole. The first thin-walled square hole and the second thin-walled square hole are both opened on the first bevel ring, and the second thin-walled square hole is located above the first thin-walled square hole. The first thin-walled square hole is horizontally arranged, and the second thin-walled square hole is vertically arranged.
[0010] After adopting the above-mentioned further structure, a double-layer flame effect can be formed on the outer fire cover, and when the first thin-walled square hole and the second thin-walled square hole can be output on the first bevel ring at the same time, the output pressure is lower and the flame height is lower than the traditional flame height, thereby further reducing the distance between the bottom of the pot and the burner. At the same time, the secondary air can be fully supplemented between the two flames output by the two adjacent thin-walled square holes, so that the gas burns more completely, effectively reducing the CO content in the flue gas, and reducing the heat conduction and radiation heat transfer of the flame to the fire cover, thereby increasing the heat load.
[0011] Furthermore, the first double air outlet surface also includes a second bevel ring, the upper ends of the first bevel ring and the second bevel ring are connected, the second bevel ring is inclined toward the inner circumference direction of the outer fire cover, and a third thin-walled square hole is opened on the second bevel ring, and the third thin-walled square hole is vertically arranged.
[0012] After adopting the above-mentioned further structure, since the cross-section of the first bevel ring and the second bevel ring forms an inverted V shape, a double-sided flame effect can be formed on the outer fire cover, and the third thin-walled square hole can further increase the heat for the center position. At the same time, the third thin-walled square hole can make the flame output to the middle position short, which can effectively reduce the height between the bottom of the pot and the fire cover, reduce heat loss, and significantly improve thermal efficiency.
[0013] Furthermore, the second double air outlet surface includes a third bevel ring and a fourth bevel ring, the upper ends of the third bevel ring and the fourth bevel ring are connected, the third bevel ring is inclined in the direction of the second bevel ring, and the fourth bevel ring is inclined in the direction of the inner circumference, and the thin-walled square hole unit includes a fourth thin-walled square hole and a fifth thin-walled square hole, the fourth thin-walled square hole is opened on the third bevel ring, and the fifth thin-walled square hole is opened on the fourth bevel ring.
[0014] After adopting the above-mentioned further structure, a double-sided low flame effect can also be formed on the inner fire cover, and the height between the bottom of the pot and the fire cover can be effectively reduced, thereby reducing heat loss and significantly improving thermal efficiency.
[0015] Furthermore, the fourth thin-walled square hole has two layers distributed up and down, and the fourth thin-walled square hole and the fifth thin-walled square hole are both vertically arranged.
[0016] After adopting the above-mentioned further structure, the flame is made short and slender, which is more conducive to the full replenishment of secondary air between the two flames, so that the flame on the inner fire cover burns more completely and the thermal efficiency of the middle position of the bottom of the pot is higher.
[0017] Furthermore, the burner body is provided with an outer fire groove, in which two ejector tube connection holes are provided, and the lower end of the burner body is provided with two first ejector tubes, which are respectively connected with the two ejector tube connection holes.
[0018] After adopting the above-mentioned further structure, since the volume of the outer fire groove is relatively large, the two first ejector pipes can eject more air, making the combustion more complete and more effectively ensuring the stability of the flame output from the outer fire cover.
[0019] Furthermore, a center fire connecting hole is provided in the middle of the inner fire cover, a center fire assembly is installed in the center fire connecting hole, the center fire assembly includes a center fire ejection tube, a top cover is detachably installed on the upper end of the center fire ejection tube, a lower cover installed on the center fire ejection tube is provided below the top cover, so that a secondary air replenishment channel is formed between the outer wall of the center fire ejection tube and the inner wall of the inner fire cover, a mesh plate is provided in the center of the top cover, and air holes connected to the secondary air replenishment channel are provided on the outer edges of the lower cover and the top cover.
[0020] After adopting the above-mentioned further structure, the center fire introduction tube is in the shape of a vertically arranged straight tube, so that the flame is output upward on the mesh plate, and air can enter the bottom of the pot from the secondary air supplement channel for supplementary combustion, thereby improving thermal efficiency, and reducing the heat of the inner fire cover and reducing the heat conduction of the inner fire cover.
[0021] Furthermore, the top cover is connected to the center fire ejection tube via threads.
[0022] After adopting the above-mentioned further structure, the top cover can be easily unscrewed for cleaning to prevent the mesh plate from being blocked.
[0023] Furthermore, the top cover is inclined.
[0024] With the above further structure, when air is input from the air holes on the inclined top cover, the air can be sprayed toward the fourth bevel ring, so that the flame output from the fifth thin-walled square hole can be better supplemented with air to improve thermal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the upper air inlet microporous burner of the present invention.
[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the first embodiment of the outer fire cover.
[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the inner fire cover.
[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the second embodiment of the outer fire cover.
[0029] Figure 5 This is one of the three-dimensional structural schematic diagrams of the burner body.
[0030] Figure 6 This is the second schematic diagram of the three-dimensional structure of the burner body.
[0031] Figure 7 Schematic diagram of the internal structure of the center fire component.
[0032] In the figure: burner body 1, outer fire cover 2, inner fire cover 3, center fire assembly 4, first bevel ring 5, second bevel ring 6, first thin-walled square hole 7, second thin-walled square hole 8, third thin-walled square hole 9, center fire connecting hole 10, third bevel ring 11, fourth bevel ring 12, fourth thin-walled square hole 13, fifth thin-walled square hole 14, outer fire groove 15, ejector tube connecting hole 16, first ejector tube 17, second ejector tube 18, center fire ejector tube 19, lower cover 20, top cover 21, mesh plate 22. DETAILED DESCRIPTION
[0033] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0034] Combination Figures 1 to 3The upper air inlet microporous burner shown includes a burner body 1, on which a fire cover is provided, on which a convex portion with an inverted V-shaped cross section is provided, and on which a thin-walled square hole unit is provided. In this embodiment, a thin-walled square hole unit is provided on the convex portion of the fire cover, so that the premixed gas can output flames from the thin-walled square hole unit of the fire cover. Under the action of the thin-walled square hole unit, the output pressure of the premixed gas can be smaller than the pressure of the traditional circular air hole, so that the height of the flame is relatively lower, the heat dissipation speed is slower, the heat is more concentrated on the bottom of the pot, and the thermal efficiency is higher. At the same time, under the action of the convex portion, the output of the low flame can be made more stable.
[0035] Among them, in this embodiment, the fire cover member includes an outer fire cover 2 and an inner fire cover 3, and the convex part includes a first double air outlet surface located on the outer fire cover 2 and a second double air outlet surface located on the inner fire cover 3, and thin-walled square hole units are provided on the first double air outlet surface and the second double air outlet surface. This allows the outer fire cover 2 and the inner fire cover 3 to output double-layer flames, and the double-layer flames are output from the same fire groove, the flame height is relatively lower, and the heat is dissipated more slowly, so that the heat is more concentrated and the thermal efficiency is high.
[0036] Specifically, the first double air outlet surface includes a first bevel ring 5, which is inclined toward the outer circumference of the outer fire cover 2. The thin-walled square hole unit includes a first thin-walled square hole 7 and a second thin-walled square hole 8. The first thin-walled square hole 7 and the second thin-walled square hole 8 are both opened on the first bevel ring 5, and the second thin-walled square hole 8 is located above the first thin-walled square hole 7. The first thin-walled square hole 7 is arranged horizontally, and the second thin-walled square hole 8 is arranged vertically; so that a double-layer flame effect can be formed on the outer fire cover 2, and when the first thin-walled square hole 7 and the second thin-walled square hole 8 can be output on the first bevel ring 5, the output pressure is lower, and the flame height is lower than the traditional flame height, thereby further reducing the distance between the bottom of the pot and the burner. At the same time, secondary air can be fully supplemented between the two flames output by two adjacent thin-walled square holes, so that the gas burns more fully, effectively reducing the CO content in the flue gas, and reducing the heat conduction and radiation heat transfer of the flame to the fire cover, thereby increasing the heat load.
[0037] The second double air outlet surface of the present embodiment includes a third bevel ring 11 and a fourth bevel ring 12, the upper ends of the third bevel ring 11 and the fourth bevel ring 12 are connected, the third bevel ring 11 is inclined toward the direction of the second bevel ring 6, and the fourth bevel ring 12 is inclined toward the inner circumference, and the thin-walled square hole unit includes a fourth thin-walled square hole 13 and a fifth thin-walled square hole 14, the fourth thin-walled square hole 13 is provided on the third bevel ring 11, and the fifth thin-walled square hole 14 is provided on the fourth bevel ring 12. The inner fire cover 3 can also form a double-sided low flame effect, and can effectively reduce the height between the bottom of the pot and the fire cover, reduce heat loss, and significantly improve thermal efficiency.
[0038] It is worth noting that the fourth thin-walled square hole 13 has two layers distributed up and down, and the fourth thin-walled square hole 13 and the fifth thin-walled square hole 14 are both arranged vertically, so that the flame is short and slender, which is more conducive to the full supplement of secondary air between the two flames, so that the flame on the inner fire cover 3 burns more fully, and the thermal efficiency of the middle position of the pot bottom is higher.
[0039] See also Figure 4 As shown, in the second embodiment of the outer fire cover 2, the first double air outlet surface also includes a second bevel ring 6, the upper ends of the first bevel ring 5 and the second bevel ring 6 are connected, the second bevel ring 6 is inclined toward the inner circumference of the outer fire cover 2, and a third thin-walled square hole 9 is opened on the second bevel ring 6, and the third thin-walled square hole 9 is vertically arranged; the cross-section of the first bevel ring 5 and the second bevel ring 6 forms an inverted V shape, so that a double layer can be formed on the outer fire cover 2 and has a double-sided flame effect, and the third thin-walled square hole 9 can further increase the heat for the center position. At the same time, the third thin-walled square hole 9 can make the flame output to the middle position short, which can effectively reduce the height between the bottom of the pot and the fire cover, reduce heat loss, and significantly improve thermal efficiency.
[0040] like Figure 5 and Figure 6 As shown, the burner body 1 is provided with an outer fire groove 15 and an inner fire groove, and two ejector tube connection holes 16 are provided in the outer fire groove 15, and two first ejector tubes 17 are provided at the lower end of the burner body 1, and the two first ejector tubes 17 are respectively connected with the two ejector tube connection holes 16, and a second ejector tube 18 is also provided at the lower end of the burner body 1, and the second ejector tube 18 is connected with the inner fire groove. Since the volume of the outer fire groove 15 is relatively large, the two first ejector tubes 17 can eject more air, so that the combustion is more complete, and the stability of the flame output from the outer fire cover 2 is more effectively ensured.
[0041] See also Figure 7 As shown, a central fire connection hole 10 is provided in the middle of the inner fire cover 3 of the present embodiment, and a central fire assembly 4 is installed in the central fire connection hole 10. The central fire assembly 4 includes a central fire ejection tube 19, and a top cover 21 is detachably installed on the upper end of the central fire ejection tube 19. A lower cover 20 installed on the central fire ejection tube 19 is provided below the top cover 21, so that a secondary air supplement channel is formed between the outer wall of the central fire ejection tube 19 and the inner wall of the inner fire cover 3. A mesh plate 22 is provided at the center of the top cover 21, and air holes connected to the secondary air supplement channel are provided on the outer edges of the lower cover 20 and the top cover 21. The central fire ejection tube 19 is in the shape of a vertically arranged straight tube, so that the flame is output upward on the mesh plate 22, and air can enter the bottom of the pot from the secondary air supplement channel for supplementary combustion, thereby improving thermal efficiency, reducing the heat of the inner fire cover 3, and reducing the heat conduction of the inner fire cover.
[0042] The top cover 21 is inclined, so that when air is input from the air holes on the inclined top cover 21, the air can be sprayed toward the fourth bevel ring 12, so that the flame output from the fifth thin-walled square hole 14 can be better supplemented with air to improve thermal efficiency.
[0043] It is worth noting that the top cover 21 of this embodiment is connected to the center fire ejection tube 19 by threads. The top cover 21 can be easily unscrewed for cleaning to prevent the mesh plate 22 from being blocked.
[0044] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.
Claims
1. A top-inlet microporous burner, comprising a burner body (1), characterized in that: The burner body (1) is covered with a fire cover, the fire cover is provided with a convex portion with an inverted V-shaped cross section, and a thin-walled square hole unit is opened on the convex portion.
2. The upward air inlet microporous burner according to claim 1, characterized in that: The fire cover member comprises an outer fire cover (2) and an inner fire cover (3); the convex portion comprises a first double air outlet surface located on the outer fire cover (2) and a second double air outlet surface located on the inner fire cover (3); and thin-walled square hole units are provided on the first double air outlet surface and the second double air outlet surface.
3. The upward air inlet microporous burner according to claim 2, characterized in that: The first double air outlet surface comprises a first bevel ring (5), the first bevel ring (5) is inclined toward the outer circumferential direction of the outer fire cover (2), the thin-walled square hole unit comprises a first thin-walled square hole (7) and a second thin-walled square hole (8), the first thin-walled square hole (7) and the second thin-walled square hole (8) are both opened on the first bevel ring (5), the second thin-walled square hole (8) is located above the first thin-walled square hole (7), the first thin-walled square hole (7) is arranged horizontally, and the second thin-walled square hole (8) is arranged vertically.
4. The upward air inlet microporous burner according to claim 3, characterized in that: The first double air outlet surface further comprises a second bevel ring (6), the upper ends of the first bevel ring (5) and the second bevel ring (6) are connected, the second bevel ring (6) is inclined towards the inner circumference of the outer fire cover (2), and a third thin-walled square hole (9) is formed on the second bevel ring (6), and the third thin-walled square hole (9) is arranged vertically.
5. The upward air inlet microporous burner according to claim 2, characterized in that: The second double air outlet surface comprises a third bevel ring (11) and a fourth bevel ring (12); the upper ends of the third bevel ring (11) and the fourth bevel ring (12) are connected; the third bevel ring (11) is inclined in the direction of the second bevel ring (6); the fourth bevel ring (12) is inclined in the direction of the inner circumference; the thin-walled square hole unit comprises a fourth thin-walled square hole (13) and a fifth thin-walled square hole (14); the fourth thin-walled square hole (13) is provided on the third bevel ring (11); and the fifth thin-walled square hole (14) is provided on the fourth bevel ring (12).
6. The upward air inlet microporous burner according to claim 5, characterized in that: The fourth thin-walled square holes (13) have two layers distributed in an upper and lower manner, and the fourth thin-walled square holes (13) and the fifth thin-walled square holes (14) are both arranged vertically.
7. The upward air inlet microporous burner according to claim 3, characterized in that: The burner body (1) is provided with an outer fire groove (15), and two ejector tube connection holes (16) are provided in the outer fire groove (15). Two first ejector tubes (17) are provided at the lower end of the burner body (1), and the two first ejector tubes (17) are respectively connected to the two ejector tube connection holes (16).
8. The upward air inlet microporous burner according to claim 5, characterized in that: A center fire connection hole (10) is provided in the middle of the inner fire cover (3), a center fire assembly (4) is installed in the center fire connection hole (10), and the center fire assembly (4) includes a center fire ejection tube (19), a top cover (21) is detachably installed on the upper end of the center fire ejection tube (19), and a lower cover (20) installed on the center fire ejection tube (19) is provided below the top cover (21) so that a secondary air replenishment channel is formed between the outer wall of the center fire ejection tube (19) and the inner wall of the inner fire cover (3), and a mesh plate (22) is provided at the center of the top cover (21), and air holes connected to the secondary air replenishment channel are provided on the outer edges of the lower cover (20) and the top cover (21).
9. The upward air inlet microporous burner according to claim 8, characterized in that: The top cover (21) is connected to the center fire ejector tube (19) via threads.
10. The upward air inlet microporous burner according to claim 8, characterized in that: The top cover (21) is inclined.