A fire distribution device for variable fire hole gas channel

Abstract

The invention relates to the technical field of fire distributors for commercial gas stove burners, and specifically discloses a fire distributor device for a variable fire hole airway, wherein the second annular disc has a thickness of 0.9-1.2 mm, and the height of an air outlet is 0.9-1.2 mm, and the airflow flowing out of the fire hole airway is in a thin and wide linear state, and the thin and wide linear airflow state can make it easier for premixed gas to quickly and sufficiently absorb heat required for combustion at the first time, the first annular disc has a thickness of 2.8-3.2 mm, and the distance between the upper and lower air outlets is 2.8-3.2 mm, and this distance can better create a suitable combustion reaction space between the mixed gas airflows flowing out of the upper and lower adjacent fire holes, and the combustion flame and heat of the mixed gas flowing out earlier can flow back to the root of the airflow to be used for the combustion of the mixed gas flowing out later, which is conducive to accelerating the combustion reaction speed and improving the combustion reaction intensity, increasing the combustion flame temperature and volume heat density, and reducing the probability of flame-out and flame-off conditions.

Description

Technical Field

[0001] The invention relates to the technical field of commercial gas stove burner fire distributors, and specifically discloses a fire distributor device for a variable fire hole airway, in which annular discs with fan-shaped tooth grooves and regular annular discs are alternately stacked in sequence to form a fire hole airway with a small air inlet and a large air outlet. Background Art

[0002] The burner fire divider produced by stainless steel plates is widely popular because its material is not easy to oxidize and rust and has high sensory value. One of them is a cylindrical fire divider formed by processing two groups of annular discs from stainless steel plates and then stacking them alternately in sequence. Since one group of annular discs forming the fire hole airway is mostly formed by circumferential corrugated plates, and the other group of annular discs is formed by flat plates, the fire divider formed by the two groups of annular discs being alternately stacked in sequence, and the front and back grooves of the corrugated plates and the flat plate surface form a fire hole channel. Since the geometric size characteristics of the air inlet and air outlet of this type of fire hole channel are almost the same, the resistance of the mixed gas when flowing at the inlet and outlet of the fire hole channel is almost the same. In order to reduce the combustion reaction noise, the total cross-sectional area of ​​the fire hole channel is usually made larger, so that the premixed gas can flow in the fire hole at a lower pressure and flow rate. The premixed gas flowing at such a low pressure and low speed can easily transmit the combustion flame in the combustion reaction zone to the premixed gas chamber, which will increase the probability of flashback accidents. The two groups of annular discs are mostly made of plates with the same thickness, and the thickness of the plates usually does not exceed 2mm. Therefore, the formed fire hole channels and the distance between adjacent fire holes must be less than 2mm. The fire holes arranged so closely at such a close distance will inevitably make it impossible for the previous combustion flame and heat to flow back to the root of the combustion flame in each fire hole as a unit, which is not conducive to the subsequent outflowing premixed gas to obtain the heat required for combustion in the first time, which can easily cause the disadvantages of low combustion reaction speed and intensity and flame root deignition. Summary of the invention

[0003] The present invention aims at solving the above-mentioned deficiencies in the prior art and provides a fire distribution device for a variable fire hole airway.

[0004] The technical solution adopted by the present invention to solve the above problems is as follows:

[0005] The present invention provides a fire dividing device for a variable fire hole air duct, comprising a first annular disc and a second annular disc, wherein the inner ring of the second annular disc is provided with serrated teeth, the top of the serrated teeth is provided with a serrated tooth tip, and a serrated tooth groove and a serrated tooth groove root are provided between adjacent serrated teeth, the outer ring of the second annular disc is provided with wavy teeth, the top of the wavy teeth is provided with a wavy tooth tip, and a wavy tooth groove and a wavy tooth groove root are provided between adjacent wavy teeth, the first annular disc and the second annular disc are alternately stacked in sequence, an air inlet is formed between the serrated tooth groove root and the first annular disc, an air outlet is formed between the serrated tooth groove and the first annular disc, the thickness of the first annular disc is 2.8-3.2 mm, and the thickness of the second annular disc is 0.8-1.2 mm.

[0006] Furthermore, the sawtooth groove corresponds to the radial position of the wavy tooth, the sawtooth tooth tip corresponds to the radial position of the wavy groove, the root diameter of the sawtooth groove is larger than the root diameter of the wavy groove, and a sawtooth groove bell mouth is provided between the sawtooth groove and the sawtooth groove root.

[0007] Furthermore, the root of the sawtooth groove protrudes from the outer wall surface of the first annular disc, the outer wall of the first annular disc overlaps with the root of the wave tooth groove, and a welding and fixing point is provided at the overlapping part of the first annular disc and the root of the wave tooth groove.

[0008] Furthermore, the thickness of the first annular disc is 3 mm, and the thickness of the second annular disc is 1 mm.

[0009] The intentional effect of the present invention is that: the technical scheme provides a fire-dividing device for a variable fire hole air duct, the second annular disc 2 has a thickness of 0.9-1.2mm, and the height of the air outlet is 0.9-1.2mm, and the air flow flowing out of the air outlet is in a thin and wide linear state. The thin and wide linear air flow state can make it easier for the premixed gas to quickly and sufficiently absorb the heat required for combustion in the first time. The first annular disc 1 has a thickness of 2.8-3.2mm, and the distance between the upper and lower air outlets is 2.8-3.2mm. This distance can better create a suitable combustion reaction space between the mixed gas airflows flowing out of the upper and lower adjacent fire holes. The combustion flame and heat of the mixed gas flowing out earlier can flow back to the root of the airflow, which is used for the combustion of the mixed gas flowing out later, which is beneficial to accelerate the combustion reaction speed and increase the combustion reaction intensity, increase the combustion flame temperature and volumetric heat density, and at the same time reduce the probability of flameout. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a first structural schematic diagram of a fire distribution device of a variable fire hole gas channel of the present invention;

[0011] Figure 2It is a schematic diagram of the structure of the second annular disc in a fire distribution device of a variable fire hole gas channel of the present invention;

[0012] Figure 3 It is an enlarged view of the first A in the second annular disc of the present invention;

[0013] Figure 4 It is an enlarged view of the second A position in the second annular disc of the present invention;

[0014] Figure 5 It is a schematic diagram of the structure of the first annular disc in a fire distribution device of a variable fire hole gas channel of the present invention;

[0015] Figure 6 This is a second structural schematic diagram of a fire distribution device of a variable fire hole air duct according to the present invention.

[0016] Marked in the accompanying drawings: 1-first annular disc, 101-outer wall, 102-inner wall, 2-second annular disc, 201-serrated tooth, 202-serrated tooth tip, 203-serrated tooth groove, 204-serrated tooth groove root, 205-serrated tooth groove bell mouth, 206-wavy tooth, 207-wavy tooth groove root, 208-wavy tooth groove, 209-wavy tooth tip, 3-air inlet, 4-air outlet, 5-welding and fixing point. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention, but this does not constitute a limitation on the protection scope of the present invention.

[0018] In the present invention, for a clearer description, the following explanation is made: the observer faces the attached Figure 1 For observation, the left side of the observer is set as the back, the right side of the observer is set as the front, the front of the observer is set as the left, the rear of the observer is set as the right, the top of the observer is set as the top, and the bottom of the observer is set as the bottom. It should be pointed out that the terms "front end", "rear end", "left side", "right side", "middle", "top", "bottom" and the like in the text indicate the orientation or position relationship based on the orientation or position relationship set in the accompanying drawings, which is only for the convenience of clearly describing the present invention, and does not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", and "fourth" are only used for the purpose of clarifying or simplifying the description, and cannot be understood as indicating or implying relative importance or quantity.

[0019] Reference Figures 1 to 6As shown, a fire distribution device of a variable fire hole gas channel includes a first annular disc 1 and a second annular disc 2, wherein the inner ring of the second annular disc 2 is provided with sawtooth teeth 201, the top of the sawtooth teeth 201 is provided with sawtooth tooth tips 202, and sawtooth tooth grooves 203 are provided between adjacent sawtooth teeth 201.

[0020] The outer ring of the second annular disc 2 is provided with a wave tooth 206, the top of the wave tooth 206 is provided with a wave tooth tip 209, and the adjacent wave teeth 206 are provided with a wave tooth groove 208 and a wave tooth groove root 207. The first annular disc 1 and the second annular disc 2 are arranged in sequence.

[0021] Alternately superimposed, an air inlet 3 is formed between the root of the sawtooth groove 204 and the first annular disc 1, an air outlet 4 is formed between the sawtooth groove 203 and the first annular disc 1, the thickness of the second annular disc 2 is 0.9-1.2mm, and the height of the air outlet 4 is 0.9-1.2mm. The airflow flowing out of the air outlet 4 is in a thin and wide linear state. The thin and wide linear airflow state can make it easier for the premixed gas to quickly and sufficiently absorb the heat required for combustion in the first time. The thickness of the first annular disc 1 is 2.8-3.2mm, and the distance between the upper and lower air outlets 4 is 2.8-3.2mm. This distance can better provide a mixed gas flowing out of the upper and lower adjacent fire holes. A suitable combustion reaction space is created between the airflows, and the combustion flame and heat of the mixed gas that flows out earlier can flow back to the root of the airflow, and be used for the combustion of the mixed gas that flows out later, which is beneficial to accelerate the combustion reaction speed and increase the combustion reaction intensity, increase the combustion flame temperature and volumetric heat density, and reduce the probability of flameout and flame separation. The overall temperature rise of the combustion chamber is more uniform, so that the mixed gas flowing out of each air outlet 4 can be evenly preheated, and the disadvantage of uneven temperature rise in the local area of ​​the ignition divider will not occur. The deformation of the ignition divider due to the overall uneven temperature rise can be avoided to the greatest extent, and the stability of the combustion performance and the durability of the structural entity of the ignition divider during long-term use can be effectively improved.

[0022] Furthermore, the sawtooth groove 203 corresponds to the radial position of the wavy tooth 206, the sawtooth tooth tip 209 corresponds to the radial position of the wavy groove 208, the diameter of the sawtooth groove root 204 is greater than the diameter of the wavy groove root 207, a sawtooth groove bell mouth 205 is provided between the sawtooth groove 203 and the sawtooth groove root 204, and the sawtooth groove 203 is fan-shaped, so that the fire hole gas passage with each sawtooth groove 203 as a unit has the same decompression and deceleration effect on the mixed gas as the bell mouth, so that In order to reasonably increase the gas pressure of the mixed gas on one side of the distribution chamber, better ensure that the mixed gas flow rate distributed to each gas outlet 4 is more uniform, and ensure a higher flow rate of the mixed gas at the entrance of the serrated groove bell mouth 205, thereby effectively reducing the combustion flame through the fire hole air duct to the mixed gas distribution chamber, and the safety accidents caused by the steady pressure reduction and speed reduction effect of the bell mouth can better reduce the gas outflow speed and airflow fluctuations, which is conducive to the balanced and stable combustion of the mixed gas and the uniform and beautiful fire shape of the combustion flame, and reduces the combustion reaction noise.

[0023] Furthermore, the root of the serrated groove protrudes from the surface of the outer wall 101 of the first annular disc 1. Since the root of the serrated groove inside the second annular disc 2 protrudes from the outer surface of the first annular disc 1, the premixed gas enters through the serrated groove 203 area where the root 204 of the serrated groove protrudes from the outer surface of the first annular disc 1, and flows inward along the serrated groove 203 channel clamped by the first annular disc 1 above and below. The inner wall 102 on the first annular disc 1 coincides with the serrated tooth tip 202, which is conducive to precise positioning using a tooling fixture during assembly, and the two annular discs are neatly stacked, thereby improving the visual beauty of the product. A welding and fixing point is provided at the overlapping portion between the outer wall 101 of the first annular disc and the root 207 of the wavy groove.

[0024] Furthermore, the thickness of the first annular disc 1 is 3 mm, and the thickness of the second annular disc 2 is 1 mm.

[0025] The present technical scheme provides a fire-dividing device for a variable fire hole air duct, wherein the thickness of the second annular disc 2 is 0.9-1.2mm, and the height of the air outlet is 0.9-1.2mm, and the air flow out of the air outlet is in a thin and wide linear state. The thin and wide linear air flow state can make it easier for the premixed gas to quickly and sufficiently absorb the heat required for combustion in the first time. The thickness of the first annular disc 1 is 2.8-3.2mm, and the distance between the upper and lower air outlets is 2.8-3.2mm. This distance can better create a suitable combustion reaction space between the mixed gas airflows flowing out of the upper and lower adjacent fire holes. The combustion flame and heat of the mixed gas flowing out earlier can flow back to the root of the airflow for the combustion of the mixed gas flowing out later, which is beneficial to accelerate the combustion reaction speed and increase the combustion reaction intensity, increase the combustion flame temperature and volumetric heat density, and reduce the probability of flameout.

[0026] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not violate the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A fire distribution device for a variable fire hole gas channel, characterized in that: It comprises a first annular disc and a second annular disc, wherein the inner ring of the second annular disc is provided with sawtooth teeth, the top of the sawtooth teeth is provided with sawtooth tooth tips, and sawtooth tooth grooves and sawtooth tooth groove roots are provided between adjacent sawtooth teeth, and the outer ring of the second annular disc is provided with wavy teeth, the top of the wavy teeth is provided with wavy tooth tips, and wavy tooth grooves and wavy tooth groove roots are provided between adjacent wavy teeth, the first annular disc and the second annular disc are alternately stacked in sequence, an air inlet is formed between the root of the serrated tooth groove and the first annular disc, and an air outlet is formed between the serrated tooth groove and the first annular disc, the thickness of the first annular disc is 2.8-3.2mm, and the thickness of the second annular disc is 0.9-1.2mm; The sawtooth groove corresponds to the radial position of the wavy tooth, the sawtooth tooth tip corresponds to the radial position of the wavy groove, the root diameter of the sawtooth groove is larger than the root diameter of the wavy groove, and a sawtooth groove bell mouth is provided between the sawtooth groove and the root of the sawtooth groove; The root of the sawtooth groove protrudes from the outer wall surface of the first annular disc, the outer wall of the first annular disc coincides with the root of the wave tooth groove, and a welding and fixing point is provided at the coincidence portion between the first annular disc and the root of the wave tooth groove.

2. The variable fire hole gas channel fire distribution device according to claim 1, characterized in that: The thickness of the first annular disc is 3 mm, and the thickness of the second annular disc is 1 mm.

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