CN-224230007-U - Gas distribution chamber and kitchen range comprising same

CN224230007UCN 224230007 UCN224230007 UCN 224230007UCN-224230007-U

Abstract

The utility model provides a gas separation chamber and a kitchen range comprising the same. The gas separation chamber comprises a first annular gas passage, first-stage branch gas passages and second-stage branch gas passages, wherein each first-stage branch gas passage is communicated with the first annular gas passage through at least two second-stage branch gas passages, and the gas passages corresponding to the same first-stage branch gas passage and between the adjacent second-stage branch gas passages are different in extending direction. When the output of the fuel gas is stopped, a suction effect is generated in the gas separation chamber, and the air-fuel mixture in at least two secondary branch gas passages forms a backflow gas flow and is sucked into the primary branch gas passages. Because the extending directions of the air passages between the adjacent two-stage branch air passages are different, the reflux air flows are intersected in the first-stage branch air passages and mutually impacted, the reflux speed of the air flows is reduced, and the flashback flame is inhibited. The arrangement reduces the possibility of tempering, avoids the problems of carbon deposition and structural damage in the gas separation chamber caused by further penetration of the flashback flame, prolongs the service life of the gas separation chamber, and improves the safety of the gas separation chamber.

Inventors

GUO DA
CHEN DILONG
SUN WENJING
YU YU

Assignees

宁波方太厨具有限公司

Dates

Publication Date: 20260512
Application Date: 20250509

Claims (10)

1. The utility model provides a divide air chamber, its includes first circular air flue and one-level branch air flue, its characterized in that: the gas separation chamber further comprises secondary branch gas passages, and each primary branch gas passage is communicated with the first annular gas passage through at least two secondary branch gas passages; The extending directions of the air passages of the adjacent secondary branch air passages communicated with the same primary branch air passage are different.
2. The plenum of claim 1 wherein the included angle between the extending directions of the two adjacent secondary branch air passages connected to the same primary branch air passage is 90 ° or less.
3. The gas separation chamber according to claim 1, wherein the number of the secondary branch gas passages communicated with the same primary branch gas passage is two, and the two secondary branch gas passages are symmetrically distributed by taking the gas passage extending direction of the communicated primary branch gas passages as an axis.
4. The plenum of claim 1 wherein all of said secondary branch air passages are in communication with different locations on said first annular air passage.
5. The plenum of claim 4 wherein all of said secondary branch air passages are circumferentially and uniformly connected to said first annular air passage.
6. The gas-dividing chamber according to claim 1, wherein an end of the secondary branch gas passage remote from the primary branch gas passage has a long-angle end communicating with an outer peripheral side of the first annular gas passage and a short-angle end communicating with an inner peripheral side of the first annular gas passage, and/or, All the first-stage branch air passages are distributed along the radial direction of the gas-dividing chamber in the projection direction and/or, One end of the same first-stage branch air passage, which is close to the first annular air passage, is communicated with the second-stage branch air passage and/or, The number of the first-stage branch air passages is three, and the included angles of the extending directions of the air passages of the adjacent first-stage branch air passages are 120 degrees.
7. The gas-dividing chamber according to claim 1, further comprising a second annular gas passage and a main gas passage, wherein the main gas passage is communicated with the second annular gas passage, and one end, far away from the first annular gas passage, of all the primary branch gas passages is communicated with the second annular gas passage; the outer diameter of the second annular air passage is smaller than the inner diameter of the first annular air passage.
8. The plenum of claim 7 wherein the second annular air channel has an air channel width that is greater than the air channel width of the first annular air channel.
9. A hob, characterized in, that it comprises a gas separation chamber according to any one of the claims 1-8.
10. The cooktop of claim 9, further comprising a fire cover; The fire cover comprises an annular cover body, and the cover body and the first annular air passage are correspondingly arranged; The fire cover is also provided with fire holes with the same size, and the fire holes are communicated with the first ring air passage and are uniformly distributed on the cover body.

Description

Gas distribution chamber and kitchen range comprising same Technical Field The utility model relates to the field of stoves, in particular to a gas separation chamber and a stove comprising the same. Background As shown in fig. 1, a gas mixing chamber 2 'and a gas dividing chamber 1' are arranged in the kitchen range and used for conveying and preparing fuel gas. The gas flows at a high speed through the injection pipe, is fully mixed with air in the gas mixing chamber 2', and then is sequentially conveyed to the main air passage 11' and the second annular air passage 12' of the gas distribution chamber 1', and is then shunted to the first annular air passage 15' at the peripheral side of the gas distribution chamber 1' through a plurality of radially distributed branch air passages 13', and finally is output to the fire hole 31' of the fire cover 3', so that combustion is realized. However, in the prior art, the stove has the tempering problem that after a user closes a gas valve, residual air-fuel mixture is retained or sucked back into the gas separation chamber 1', and the residual air is possibly re-ignited due to high temperature or residual fire at a part close to the fire cover 3', and meanwhile, a local low-pressure area in the gas separation chamber 1' causes a suction effect, so that flame backfire enters the gas separation chamber 1' or a deeper structure, and carbon deposition and structural damage in the gas separation chamber 1' are caused. To solve the above problem, a smaller fire hole 31' may be provided at the outlet of the fire cover 3' corresponding to the branch air duct 13' to increase the resistance. When the valve is opened, the resistance at the fire hole 31' can intercept the output air flow to make the speed of the output air flow uniform at the inner side of the fire hole 31', and when the valve is suddenly closed, the resistance at the fire hole 31' can intercept the back flow air flow and the backfire flame to prevent backfire. And when the valve is opened, the resistance at the fire hole 31 'can also intercept the output airflow, so that the output airflow speed at the outer ring air passage 15' is uniform, and the cooking effect is improved. However, the fire holes 31' are easily blocked after being reduced in size, and may cause a decrease in combustion performance, thereby affecting the overall use effect of the cooktop. Disclosure of utility model The utility model aims to overcome the defect of tempering of a stove in the prior art and provides a gas separation chamber and the stove comprising the gas separation chamber. The utility model solves the technical problems by the following technical scheme: A gas separation chamber, which comprises a first annular gas passage and a first branch gas passage; the gas separation chamber further comprises secondary branch gas passages, and each primary branch gas passage is communicated with the first annular gas passage through at least two secondary branch gas passages; The extending directions of the air passages between the adjacent two-stage branch air passages corresponding to the same one-stage branch air passage are different. In the technical scheme, by providing the gas separation chamber, the same original branch gas passage (first-stage branch gas passage) is directly communicated with the first annular gas passage, and is connected with the first annular gas passage through at least two newly-added branch gas passages (second-stage branch gas passages). When the output of the fuel gas is stopped, a suction effect is generated in the gas separation chamber, and the air-fuel mixture in at least two secondary branch gas passages forms a backflow gas flow and is sucked into the primary branch gas passages. Because the extending directions of the air passages between the adjacent two-stage branch air passages are different, the reflux air flows are intersected in the first-stage branch air passages and mutually impacted, the reflux speed of the air flows is reduced, and the flashback flame is inhibited. The arrangement reduces the possibility of tempering, avoids the problems of carbon deposition and structural damage in the gas separation chamber caused by further penetration of the flashback flame, prolongs the service life of the gas separation chamber, and improves the safety of the gas separation chamber. Preferably, an included angle between the extending directions of the air passages of two adjacent secondary branch air passages corresponding to the same primary branch air passage is smaller than or equal to 90 degrees. In this technical scheme, through above-mentioned setting, can make the backward flow air current in the second grade branch air flue form the vortex district when striking each other in the first grade branch air flue, except the effect that the striking brought, still further restrain the flashback flame through the production of vortex. Preferably, the number of the two secondary branch air pass