Detachable annular air groove air guide structure

Abstract

The invention relates to the technical field of combustors, and discloses a detachable annular gas groove gas guide structure which comprises a combustor base, an injection pipe is arranged at the lower end of the combustor base, an annular gas groove is formed in the combustor base, and a gas inlet communicated with the injection pipe is formed in the annular gas groove. A gas guide cover piece is detachably arranged on the injection pipe in a covering manner; according to the annular gas groove gas guide structure, premixed gas flows in the circumferential direction of the annular gas groove after coming out of the gas inlet, so that the premixed gas forms a vortex in the annular gas groove under the guide of the gas guide cover piece, the further premixing effect of the premixed gas is effectively improved, the premixed gas can be output uniformly, flame combustion is more stable, and the combustion efficiency is improved. Meanwhile, due to the fact that the gas guide cover piece can be disassembled and assembled in the annular gas groove, cleaning is more convenient, and different gas guide cover pieces can be conveniently replaced to adapt to combustors of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of burners, and in particular to a detachable annular gas groove gas guide structure. Background Art

[0002] At present, most gas burners used in kitchen utensils are induced jet gas burners, which generally include a fire cover, an induced jet tube and a nozzle. A first air inlet is provided at one end of the induced jet tube corresponding to the nozzle. The induced jet tube is connected to the outside atmosphere through the first air inlet. The gas is sprayed into the induced jet tube at high speed from the nozzle, forming a strong injection in the induced jet tube. The outside air is sucked into the induced jet tube from the air inlet, and after mixing with the gas in the induced jet tube, it is sent to the fire cover for combustion.

[0003] For example, Chinese patent document CN212961572U discloses an ignition distributor and a burner, which comprises a ring-shaped base with an outer ring air duct on the top surface, an inner combustion gas seat with an inner ring air duct on the top surface, and a connecting piece connecting the two. The bottom surface of the outer ring air duct is provided with two grooves arranged in a ring array and passing through the base, and the bottom surface of the base is fixedly connected to an ejector tube connected to the groove.

[0004] According to the prior art disclosed above, in the existing burner structure, the premixed gas in the ejector tube directly enters the airway from the groove of the base, so that the premixed gas fills the airway for output combustion. However, in this structure, since the premixed gas changes from a high-pressure state to a pressure-release state when it is output from the groove, and the premixed gas has no guiding effect in the airway, the premixed gas is easily dispersed to the top of the groove, resulting in the premixed gas not being evenly filled in the annular airway, so that when the premixed gas is output for combustion, the annular flame will show different degrees of flame-breaking. Summary of the invention

[0005] In order to overcome the defects of the prior art, the present invention provides a detachable annular air groove gas guide structure to solve the problems in the prior art.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a detachable annular air groove gas guide structure, including a burner base, an ejector pipe is arranged at the lower end of the burner base, an annular air groove is arranged in the burner base, an air inlet connected to the ejector pipe is opened in the annular air groove, and the ejector pipe is detachably covered with an air guide cover.

[0007] The beneficial effect of the present invention is that after the premixed gas enters the ejector tube, under the guiding action of the gas guide cover, the premixed gas flows along the circumferential direction of the annular gas groove after coming out of the air inlet, so that the premixed gas forms a vortex in the annular gas groove under the guidance of the gas guide cover, thereby effectively improving the further premixing effect of the premixed gas, and making the premixed gas output evenly, the flame combustion is more stable, and the flame is prevented from being interrupted. At the same time, since the gas guide cover can be disassembled and assembled from the annular gas groove, it is more convenient to clean, which is conducive to replacing different gas guide covers to adapt to burners of different sizes.

[0008] In the above-mentioned detachable annular air groove air guide structure, the air inlet is an inwardly concave air inlet slope section, the upper part of the ejector tube located in the annular air groove is non-closed, and the inner lower end of the annular air groove is provided with a positioning column located on one side of the air inlet slope section, the air guide cover is positioned and installed on the positioning column, the air guide cover covers the top of the ejector tube to form an air guide area between the air guide cover and the ejector tube, and one end of the air inlet slope section is connected to the air guide area.

[0009] After adopting the above-mentioned further structure, the opening of the air guide area is facing the circumferential direction of the annular air groove. After the premixed gas enters the air guide area, it can prevent the premixed gas from dissipating from above the injector tube, thereby making the premixed gas output along the circumferential direction. At the same time, with the cooperation of the air intake slope section, a vortex can be formed faster.

[0010] In the above-mentioned detachable annular air groove air guide structure, the air guide cover comprises an arc-shaped cover, one end of the arc-shaped cover is provided with an upward connecting block, and the air guide area is formed between the arc-shaped cover and the ejector tube.

[0011] After adopting the above further structure, the arc cover is arranged on the upper part of the ejector tube, so that a gas guide area is formed between the arc cover and the ejector tube, so as to guide the premixed gas and make disassembly and assembly more convenient.

[0012] In the above-mentioned detachable annular air groove air guide structure, both sides of the inner wall of the annular air groove are provided with inwardly concave embedding grooves, and the arc-shaped cover and the connecting block are embedded in the embedding grooves.

[0013] After adopting the above-mentioned further structure, the arc-shaped cover can be conveniently embedded and installed in the upper part of the ejector tube, so as to form a gas guide area, which is more convenient to disassemble and assemble, and can be directly put on or taken down.

[0014] In the above-mentioned detachable annular air groove air guide structure, a positioning column located on one side of the air intake slope section is provided at the inner lower end of the annular air groove, the air guide cover is positioned and installed on the positioning column, and a connecting cover is provided at the upper end of the connecting block, and a positioning hole corresponding to the positioning column is opened on the connecting cover.

[0015] After adopting the above further structure, the arc-shaped cover can be directly sleeved on the positioning column through the positioning hole, so as to further stabilize the arc-shaped cover and prevent displacement during use.

[0016] In the above-mentioned detachable annular air groove air guide structure, the arc-shaped cover is curved.

[0017] By adopting the above further structure, the premixed gas can be better guided and output at a faster speed.

[0018] In the above-mentioned detachable annular air groove gas guide structure, the annular air groove upper cover is provided with a separation ring, a first fire cover is provided above the separation ring, and a plurality of strip-shaped air holes (18) are opened along the circumferential direction of the separation ring, a second fire cover is provided on the inner side of the first fire cover, and the first fire cover and the second fire cover are in a non-contact state so that an air outlet annular groove is formed between the first fire cover and the second fire cover, and the first fire cover and the second fire cover are both mounted on the annular air groove.

[0019] After adopting the above-mentioned further structure, the separator ring divides the annular gas groove into two layers, the upper and lower layers, and the two layers are connected through a plurality of strip-shaped gas holes (18). After the premixed gas is guided, a vortex is formed below the separator ring, so that it can quickly flow through each strip-shaped gas hole (18) and enter the upper layer of the separator ring, so as to facilitate combustion output from the outlet ring groove.

[0020] In the above-mentioned detachable annular air groove air guide structure, a protrusion is provided on the lower side of the plurality of strip-shaped air holes, a premixed gas inlet is opened on one side of the protrusion, the premixed gas inlet is connected with the strip-shaped air holes, and the vortex direction of the premixed gas in the annular air groove corresponds to the premixed gas inlet.

[0021] After adopting the above-mentioned further structure, after the premixed gas forms a vortex in the lower layer of the separation ring, it can enter the upper layer of the separation ring from the premixed gas inlet more quickly, so that the premixed gas can form a vortex again in the upper layer of the separation ring and be output, and the output is more stable.

[0022] In the above-mentioned detachable annular air groove air guide structure, the annular air groove includes an outer fire air groove and an inner ring air groove, the outer fire air groove is arranged around the outside of the inner ring air groove, a first air supply hole is arranged between the outer fire air groove and the inner ring air groove, the inner ring air groove is arranged around the outside of the second air supply hole, and the air outlet ring groove on the outer fire air groove or the inner ring air groove is close to the first air supply hole or the second air supply hole respectively.

[0023] With the above further structure, when the premixed gas is output from the outlet ring groove for combustion, secondary air can be supplemented through the first air supply hole or the second air supply hole, so that the combustion is more complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the burner base of this embodiment.

[0025] Figure 2 The diagram is a schematic diagram of the explosion structure of the first embodiment of the burner base and the air guide cover.

[0026] Figure 3 It is a partial cross-sectional structural schematic diagram of the first embodiment of the burner base.

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the first embodiment of the air guide cover.

[0028] Figure 5 A schematic diagram of the local structure of the burner.

[0029] Figure 6 Schematic diagram of the three-dimensional structure of the separator ring.

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the second embodiment of the inner ring air groove and the air guide cover.

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the second embodiment of the air guide cover.

[0032] In the figure: burner base 1, inner ring air groove 2, air guide cover 3, ejector pipe 4, positioning column 5, air inlet slope 6, arc cover 7, connecting block 8, connecting cover 9, positioning hole 10, separating ring 11, first fire cover 12, air outlet ring groove 14, first air supply hole 15, second air supply hole 16, embedded groove 17, strip air hole 18, protrusion 19, premixed gas inlet 20. 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] Embodiment 1 Combination Figures 1 to 6A burner shown in the figure is provided with a detachable annular gas groove gas guide structure in the burner, and the annular gas groove gas guide structure includes a burner base 1, an ejector tube 4 is provided at the lower end of the burner base 1, an annular gas groove is provided in the burner base 1, an air inlet connected to the ejector tube 4 is opened in the annular gas groove, and the ejector tube 4 is detachably covered with an air guide cover 3; after the premixed gas of this embodiment enters the ejector tube 4, under the guiding action of the air guide cover 3, the premixed gas flows along the circumferential direction of the annular gas groove after coming out of the air inlet, so that the premixed gas forms a vortex in the annular gas groove under the guidance of the air guide cover 3, effectively improving the further premixing effect of the premixed gas, and making the premixed gas output evenly, so that the flame combustion is more stable and the flame is prevented from being broken. At the same time, since the air guide cover 3 can be disassembled and assembled from the annular gas groove, it is more convenient to clean, which is conducive to replacing different air guide covers 3 to adapt to burners of different sizes.

[0035] The air inlet of the present embodiment is an air inlet slope section 6 in a concave shape, and the air inlet slope section 6 is located at the connection between the bottom surface of the annular gas groove and the inner wall of the annular gas groove, so that when the premixed gas is output from the air inlet slope section 6, the premixed gas is better guided in the circumferential direction of the annular gas groove, and the upper part of the ejector tube 4 located in the annular gas groove is non-closed, and the inner lower end of the annular gas groove is provided with a positioning column 5 located on one side of the air inlet slope section 6, and the air guide cover 3 is positioned and installed on the positioning column 5, and the air guide cover 3 covers the upper part of the ejector tube 4, so that an air guide area is formed between the air guide cover 3 and the ejector tube 4, and one end of the air inlet slope section 6 is connected to the air guide area. The opening of the air guide area faces the circumferential direction of the annular gas groove. After the premixed gas enters the air guide area, the premixed gas can be prevented from being emitted from the upper part of the ejector tube 4, so that the premixed gas is output in the circumferential direction, and at the same time, with the cooperation of the air inlet slope section 6, a vortex can be formed faster.

[0036] Specifically, the air guide cover 3 includes an arc cover 7, one end of which is provided with an upward connection block 8, and the upper end of the connection cover 8 is provided with a connection cover 9, and the connection cover 9 is provided with a positioning hole 10 corresponding to the positioning column 5. The arc cover 7 is provided on the upper part of the ejector tube 4, so that a gas guide area is formed between the arc cover 7 and the ejector tube 4, so as to guide the premixed gas, and the arc cover 7 can be directly sleeved on the positioning column 5 through the positioning hole 10, which is more convenient for disassembly and assembly.

[0037] In some embodiments, after the positioning hole 10 of the connection cover 9 is sleeved on the positioning column 5 , it can also be locked on the positioning column 5 by screws to further stabilize the air guide cover 3 .

[0038] It is worth noting that the arc-shaped cover 7 of the present embodiment is curved, which can guide the premixed gas better and output it at a faster speed.

[0039] The upper cover of the annular gas groove of this embodiment is provided with a separation ring 11, a first fire cover 12 is provided above the separation ring 11, a plurality of strip-shaped air holes 18 are provided along the circumferential direction of the separation ring 11, a second fire cover 13 is provided inside the first fire cover 12, and the first fire cover 12 and the second fire cover 13 are in a non-contact state, so that an air outlet annular groove 14 is formed between the first fire cover 12 and the second fire cover 13, and the first fire cover 12 and the second fire cover 13 are both mounted on the annular gas groove. The separation ring 11 separates the annular gas groove into two layers, upper and lower, and is connected through a plurality of strip-shaped air holes 18. After being guided, the premixed gas forms a vortex below the separation ring 11, so that it can quickly flow through each strip-shaped air hole 18 and enter the upper layer of the separation ring 11, so as to output combustion from the air outlet annular groove 14.

[0040] Specifically, a plurality of strip-shaped air holes 18 are provided with a protrusion 19 on the lower side, a premixed gas inlet 20 is provided on one side of the protrusion 19, and an arc-shaped wall corresponding to the premixed gas inlet 20 is provided inside the protrusion 19. The premixed gas inlet 20 is connected with the strip-shaped air holes 18, so that after the premixed gas enters from the premixed gas inlet 20, it is guided by the arc-shaped wall, so that the premixed gas forms a vortex again in the upper layer of the separation ring 11, and the vortex direction of the premixed gas in the annular gas groove corresponds to the premixed gas inlet 20. After the premixed gas forms a vortex in the lower layer of the separation ring 11, it can enter the upper layer of the separation ring 11 from the premixed gas inlet 20 more quickly, so that the premixed gas forms a vortex again in the upper layer of the separation ring 11 and is output, and the output is more stable.

[0041] The annular gas groove of this embodiment includes an outer fire gas groove and an inner ring gas groove 2, so that the outer fire gas groove or the inner ring gas groove 2 on the burner base 1 can be installed with a gas guide cover 3, so that the premixed gas output of the outer fire gas groove or the inner ring gas groove 2 is more uniform. In some embodiments, the lower end of the outer fire gas groove or the inner ring gas groove 2 can be connected to two left-right symmetrical ejector tubes 4, so that the premixed gas can form a vortex more quickly inside and output more uniformly.

[0042] Among them, the outer fire gas groove is arranged around the outer side of the inner ring gas groove 2, and a first air supply hole 15 is arranged between the outer fire gas groove and the inner ring gas groove 2, and the inner ring gas groove is arranged around the outer side of the second air supply hole 16, and the air outlet ring groove 14 on the outer fire gas groove or the inner ring gas groove 2 is close to the first air supply hole 15 or the second air supply hole 16 respectively, so that when the premixed gas is output from the air outlet ring groove 14 for combustion, secondary air can be supplemented through the first air supply hole 15 or the second air supply hole 16, so that the combustion is more complete.

[0043] Embodiment 2 See also Figure 7 and Figure 8As shown, the difference between the second embodiment and the first embodiment is that the air guide cover 3 includes an arc-shaped cover 7, and an upward connecting block 8 is provided at one end of the arc-shaped cover 7. The second embodiment does not need to provide a connecting cover 9, and an air guide area is formed between the arc-shaped cover 7 and the ejector tube 4; the arc-shaped cover is arranged on the upper part of the ejector tube, so that a air guide area is formed between the arc-shaped cover and the ejector tube, so as to guide the premixed gas and make disassembly and assembly more convenient.

[0044] Among them, concave embedding grooves 17 are provided on both sides of the inner wall of the annular gas groove, and the arc cover 7 and the connecting block 8 are embedded in the embedding grooves 17. The arc cover 7 can be conveniently embedded and installed in the upper part of the ejector tube, so as to form a gas guide area. It is more convenient to disassemble and assemble, and only needs to be put on or taken down directly. Moreover, compared with the positioning column structure of Example 1, the embedded structure can make the inner lower end of the annular gas groove relatively flatter, and the premixed gas flows faster during the vortex process.

[0045] 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 detachable annular gas groove gas guide structure, comprising a burner base (1), an ejector tube (4) being arranged at the lower end of the burner base (1), an annular gas groove being arranged in the burner base (1), an air inlet being arranged in the annular gas groove and being connected to the ejector tube (4), and an air guide cover (3) being detachably arranged on the ejector tube (4).

2. A detachable annular air groove gas guide structure according to claim 1, characterized in that: The air inlet is an air inlet slope section (6) in an inwardly concave shape, the upper part of the ejector tube (4) located in the annular air groove is in a non-enclosed shape, the air guide cover (3) covers the upper part of the ejector tube (4) so ​​that an air guide area is formed between the air guide cover (3) and the ejector tube (4), and one end of the air inlet slope section (6) is connected to the air guide area.

3. A detachable annular air groove gas guide structure according to claim 2, characterized in that: The air guide cover (3) comprises an arc-shaped cover (7), one end of the arc-shaped cover (7) is provided with an upwardly facing connection block (8), and the air guide area is formed between the arc-shaped cover (7) and the ejector tube (4).

4. A detachable annular air groove gas guide structure according to claim 3, characterized in that: Concave embedding grooves (17) are provided on both sides of the inner wall of the annular air groove, and the arc-shaped cover (7) and the connecting block (8) are embedded in the embedding grooves (17).

5. The detachable annular air groove gas guide structure according to claim 3, characterized in that: A positioning column (5) located on one side of the air inlet slope section (6) is provided at the inner lower end of the annular air groove, the air guide cover (3) is positioned and mounted on the positioning column (5), and a connecting cover (9) is provided at the upper end of the connecting block (8), and a positioning hole (10) corresponding to the positioning column (5) is opened on the connecting cover (9).

6. A detachable annular air groove gas guide structure according to claim 5, characterized in that: The arc-shaped cover (7) is in a curved shape.

7. A detachable annular air groove gas guide structure according to claim 1, characterized in that: The annular gas groove is covered with a separation ring (11), a first fire cover (12) is arranged above the separation ring (11), a plurality of strip-shaped air holes (18) are opened along the circumferential direction of the separation ring (11), a second fire cover (13) is arranged on the inner side of the first fire cover (12), the first fire cover (12) and the second fire cover (13) are in a non-contact state, so that an air outlet annular groove (14) is formed between the first fire cover (12) and the second fire cover (13), and the first fire cover (12) and the second fire cover (13) are both mounted on the annular gas groove.

8. A detachable annular air groove gas guide structure according to claim 7, characterized in that: A bulge (19) is provided on the lower side of each of the plurality of strip-shaped air holes (18), a premixed gas inlet (20) is provided on one side of the bulge (19), the premixed gas inlet (20) is connected to the strip-shaped air holes (18), and a vortex direction of the premixed gas in the annular gas groove corresponds to the premixed gas inlet (20).

9. The detachable annular air groove gas guide structure according to claim 7, characterized in that: The annular air groove comprises an outer fire air groove and an inner ring air groove (2), the outer fire air groove is arranged around the outer side of the inner ring air groove (2), a first air supply hole (15) is arranged between the outer fire air groove and the inner ring air groove (2), the inner ring air groove is arranged around the outer side of the second air supply hole (16), and the air outlet annular groove (14) on the outer fire air groove or the inner ring air groove (2) is respectively close to the first air supply hole (15) or the second air supply hole (16).

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