Commercial gas stove core

Abstract

The invention discloses a commercial gas stove core, comprising a burner head, a gas mixing chamber between the inner wall and the outer wall of the burner head, an ignition failure protection device arranged in the burner head, a plurality of groups of combustion holes connected with the gas mixing chamber arranged on the inner wall of the burner head, comprising a first combustion hole and a second combustion hole, the first combustion hole being arranged upwardly inclined along a direction perpendicular to the cut surface of the inner wall of the burner head, the second combustion hole extending in the direction of the first combustion hole and being arranged upwardly inclined, the plurality of groups of combustion holes being evenly distributed on the inner wall of the burner head, the lower end of the burner head being connected with a gas mixing structure, the gas mixing structure being connected with the gas mixing chamber, an air inlet pipe connected with the gas mixing structure being arranged on the outer wall of the gas mixing structure, the lower end of the gas mixing structure being connected with a ventilation pipe, the ventilation pipe being connected with the gas mixing structure. The second combustion hole is inclined in the direction of the first combustion hole, so that the fire of the first combustion hole and the second combustion hole collide with each other, and the first combustion hole and the second combustion hole are evenly distributed on the inner wall of the burner head, so that the flame in the burner head is more even.

Description

Technical Field

[0001] The invention relates to the technical field of commercial gas stoves, and in particular to a furnace core of a commercial gas stove. Background Art

[0002] Commercial gas stoves are mainly used in kitchens of restaurants, hotels, etc. In existing commercial gas stoves, the gas holes on the inner wall of the burner are usually arranged in a combination of holes and slits, so that the burning size of the flame in the burner is uneven. Summary of the invention

[0003] In order to solve the deficiencies in the above-mentioned prior art, the present invention proposes a commercial gas stove core, in which the second combustion hole is inclined toward the first combustion hole so that the fire of the first combustion hole and the second combustion hole collide with each other, and the first combustion hole and the second combustion hole are evenly distributed on the inner wall of the burner head, so that the flame in the burner head is more uniform.

[0004] In order to achieve the above technical effects, the present invention adopts the following scheme:

[0005] A commercial gas stove core comprises a burner head, a gas mixing structure and a ventilation pipe which are arranged in sequence from top to bottom, a gas mixing chamber being provided between the inner wall and the outer wall of the burner head, an ignition failure protection device being provided in the burner head, a plurality of groups of combustion holes being provided on the inner wall of the burner head and being connected to the gas mixing chamber, a group of the combustion holes comprising a first combustion hole and a second combustion hole, the first combustion hole being arranged upwardly and tilted along a direction perpendicular to a cross section of the burner head inner wall, the second combustion hole extending in the direction of the first combustion hole and being arranged upwardly and tilted, a plurality of groups of the combustion holes being evenly distributed on the inner wall of the burner head, the lower end of the burner head being connected to the gas mixing structure, the gas mixing structure being connected to the gas mixing chamber, an air inlet pipe being provided on the outer wall of the gas mixing structure and the lower end of the gas mixing structure being connected to the ventilation pipe, the ventilation pipe being connected to the gas mixing structure.

[0006] A preferred technical solution is that the gas mixing structure includes a mixing chamber, the upper end of the mixing chamber is provided with a mixed gas outlet, the mixed gas outlet is connected to the mixing chamber, the lower part of the mixing chamber is connected to a ventilation pipe, a premixing chamber is provided in the lower part of the mixing chamber, the ventilation pipe is connected to the premixing chamber, the air inlet pipe is located on the side wall of the mixing chamber and is connected to the premixing chamber, a secondary mixing chamber is also provided in the mixing chamber, a secondary mixing structure is provided in the secondary mixing chamber, the lower end of the secondary mixing chamber is connected to the premixing chamber and the upper end is connected to the mixed gas outlet, the secondary mixing structure includes a spiral airflow guiding structure to make the gas flow in a spiral shape from bottom to top for mixing, the secondary mixing chamber is connected to the premixing chamber through the lower end of the spiral airflow guiding structure, and is connected to the mixed gas outlet through the upper end of the spiral airflow guiding structure.

[0007] A preferred technical solution, the spiral airflow guiding structure includes a first high wind circle and a second high wind circle, the second high wind circle is located above the first high wind circle, the first high wind circle includes a first wind circle wall arranged in a circular tube shape, a plurality of first air outlet channels are evenly opened on the first wind circle wall around the first wind circle wall, the first air outlet channels are inclined, and the inclination direction is toward the circumferential direction of the first wind circle wall, the premixing chamber is located below the first high wind circle and is connected to the inner side of the first high wind circle, and there is a gap between the first high wind circle and the inner wall of the secondary mixing chamber; the second high wind circle includes a first wind circle wall arranged in a circular tube shape A second wind circle wall, a plurality of second air outlet channels are evenly opened on the second wind circle wall and around the second wind circle wall, the second air outlet channels are inclined, and the inclination direction is toward the circumferential direction of the second wind circle wall, the inclination direction of the second air outlet channel is opposite to that of the first air outlet channel, the diameter of the second wind circle wall is consistent with that of the first wind circle wall and they are coaxially arranged, there is a gap between the second high wind circle and the inner wall of the secondary mixing chamber, the first high wind circle and the second high wind circle are separated by an wind circle partition, the diameter of the wind circle partition is not greater than the outer diameter of the first wind circle wall, and the upper end of the first high wind circle is connected to the mixed gas outlet.

[0008] A preferred technical solution is that the first air outlet channel includes a first air outlet, the first air outlet is located on the first wind circle wall, the first air outlet is square in shape, and a first baffle is matched with the first air outlet, one side of the first baffle is fixedly connected to one side of the first air outlet, and the other side of the first baffle is tilted and opened toward the outside; the second air outlet channel includes a second air outlet, the second air outlet is located on the second wind circle wall, the second air outlet is square in shape, and a second baffle is matched with the second air outlet, one side of the second baffle is fixedly connected to one side of the second air outlet, and the other side of the second baffle is tilted and opened toward the outside.

[0009] A preferred technical solution is that an air inlet cavity is provided between the premixing chamber and the inner wall of the mixing chamber, the air inlet cavity is arranged around the premixing chamber, the air inlet cavity is isolated from the secondary mixing chamber, a plurality of first air inlet holes are evenly distributed around the premixing chamber on the side wall of the premixing chamber, the first air inlet holes are connected to the air inlet cavity, and the air inlet cavity is connected to the air inlet pipe.

[0010] A preferred technical solution, the ignition and failure protection device is located in the middle of the burner head, the ignition and failure protection device includes a mounting seat, the mounting seat is installed at the inner bottom of the burner head, an ignition needle and a failure protection sensing probe are installed on the mounting seat, the ignition needle and the failure protection sensing probe respectively extend out of the mounting seat, the mounting seat has a long-open flame hole, the long-open flame hole is located below the failure protection sensing probe and the ignition needle, the long-open flame hole is connected with a long-open flame air intake pipe, the lower end of the long-open flame air intake pipe is connected with a ventilation pipe, the long-open flame air intake pipe is also connected with a gas air intake pipe, the mounting seat is covered with a fire cap, the fire cap is located on the top to cover the long-open flame hole.

[0011] A preferred technical solution is that the mounting seat includes a bottom ring, which is installed on the bottom of the burner head, and a top ring is provided on the bottom ring, and the bottom ring and the top ring are both arranged in a ring shape, and the top ring includes a top plate, which is located above the bottom ring, and the outer edge of the top plate matches the outer side wall of the bottom ring, and there is a gap between the top plate and the bottom ring, and the gap is a long-fire hole, and the inner edge of the top plate extends downward to form a side plate, and the side plate is located on the inner side of the bottom ring, and a mixing gas chamber is formed between the side plate and the inner side wall of the bottom ring, and the lower end of the side plate extends toward the inner side wall of the bottom ring to form a bottom plate, and the bottom plate is connected to the inner side wall of the bottom ring, and the side plate is provided with a plurality of second air inlet holes, and the second air inlet holes connect the long-fire inlet pipe and the mixing gas chamber, and the outer edge of the fire cap extends out of the outside of the bottom ring in all directions.

[0012] According to a preferred technical solution, a connecting head is provided inside the side panel, a supporting edge is provided on the inner wall of the side panel, the connecting head is supported on the supporting edge, the ignition needle and the flameout sensing probe are installed on the connecting head, and the ignition needle and the flameout sensing probe are both located above the top plate.

[0013] A preferred technical solution is that a first limiting edge is provided at the upper end of the mounting seat, and the first limiting edge has two limiting notches. The ignition needle and the fire protection sensing probe are both provided with ceramic sleeves, and the ceramic sleeves are matched with the limiting notches. The ignition needle and the fire protection sensing probe are respectively placed in the two limiting notches through corresponding ceramic sleeves. The first limiting edge is arranged in a ring shape, and a second limiting edge is arranged in a ring shape at the lower end of the primer cap, and the second limiting edge matches the first limiting edge. The lower end of the second limiting edge has two installation notches, and the two installation notches respectively match the ceramic sleeves on the ignition needle and the fire protection sensing probe.

[0014] In a preferred technical solution, the height of the upper end of the fire cap is not higher than the lowest height of the combustion holes on the inner wall of the burner head. Compared with the prior art, the beneficial effects are:

[0015] The present invention has a simple structure and is easy to use. The second combustion hole is inclined toward the first combustion hole, so that the fire of the first combustion hole and the second combustion hole collide with each other. The first combustion hole and the second combustion hole are evenly distributed on the inner wall of the burner head, so that the flame in the burner head is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0018] Figure 3 It is a schematic diagram of the combustion hole group in the present invention;

[0019] Figure 4 It is a schematic diagram of the gas mixing structure in the present invention;

[0020] Figure 5 It is a cross-sectional schematic diagram of the gas mixing structure in the present invention;

[0021] Figure 6 It is a schematic diagram of the first high wind circle and the second high wind circle in the present invention;

[0022] Figure 7 This is a schematic cross-sectional view of the furnace head in the present invention (the cross section is Figure 2 perpendicular to the cross section);

[0023] Figure 8 yes Figure 7 The enlarged schematic diagram of part A in the middle;

[0024] Fig. 9 It is a schematic diagram of the first limiting edge and the second limiting edge in the present invention.

[0025] Figure numerals: 1, burner head; 101, gas mixing chamber; 102, combustion hole group; 1021, first combustion hole; 1022, second combustion hole; 2, mixing chamber; 201, mixed gas outlet; 3, ignition and shutoff protection device; 4, ventilation pipe; 5, premixing chamber; 6, air inlet pipe; 7, secondary mixing chamber; 8, first high wind circle; 801, first wind circle wall; 802, first air outlet; 803, first baffle; 9, second high wind circle; 901, second wind circle wall; 902, second air outlet; 903, second baffle; 10, wind circle spacer; 11, air inlet chamber; 12 , the first air inlet hole; 13, bottom ring; 14, top ring; 1401, top plate; 1402, side plate; 1403, bottom plate; 15, mixed gas chamber; 16, air inlet hole; 17, supporting edge; 18, connector; 19, ignition needle; 20, extinguishing protection sensing probe; 21, primer; 22, ever-opening flame hole; 23, ceramic sleeve; 24, electronic guide rod; 2401, wire hole; 25, protective tube; 26, ever-opening flame air inlet pipe; 27, first limiting edge; 2701, limiting notch; 28, second limiting edge; 2801, installation notch; 29, gas inlet pipe. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] A commercial gas stove core comprises a burner head 1, a gas mixing structure and a ventilation pipe 4 which are arranged in sequence from top to bottom, a gas mixing chamber 101 is provided between the inner wall and the outer wall of the burner head 1, an ignition failure protection device 3 is provided in the burner head 1, a plurality of combustion hole groups 102 which are connected to the gas mixing chamber 101 are provided on the inner wall of the burner head 1, one group of the combustion hole groups 102 comprises a first combustion hole 1021 and a second combustion hole 1022, the first combustion hole 1021 is arranged to be inclined upward along a direction perpendicular to a section of the inner wall of the burner head 1, the first combustion hole 1021 extends upward from the direction of the gas mixing chamber 101 to the inner wall of the burner head 1, and the plane where the first combustion hole 1021 is located is perpendicular to the circumferential section of the inner wall of the burner head 1, the The second combustion hole 1022 extends toward the direction of the first combustion hole 1021 and is inclined upward. The second combustion hole 1022 extends upward from the mixing chamber 101 to the inner wall of the burner head 1 and is inclined toward the direction close to the first combustion hole 1021. The gases exhausted from the first combustion hole 1021 and the second combustion hole 1022 form a counterattack to make the fire in the burner head 1 more uniform. Several groups of the combustion holes are evenly distributed on the inner wall of the burner head 1. The lower end of the burner head 1 is connected to the mixing structure, and the mixing structure is connected to the mixing chamber 101. An air inlet pipe 6 connected to the mixing structure is provided on the outer wall of the mixing structure. The lower end of the mixing structure is connected to the ventilation pipe 4, and the ventilation pipe 4 is connected to the mixing structure.

[0028] The air enters the gas mixing structure through the ventilation pipe 4 and is evenly mixed with the gas entering the gas mixing structure through the air intake pipe 6 in the gas mixing structure, and then enters the gas mixing chamber 101 and is discharged through the combustion hole for combustion.

[0029] The gas mixing structure comprises a mixing chamber 2, the upper end of the mixing chamber 2 is provided with a mixed gas outlet 201, the mixed gas outlet 201 is used to communicate with the gas mixing chamber 101 of the gas stove, a ventilation pipe 4 is provided below the mixing chamber 2, a premixing chamber 5 is provided at the lower part of the mixing chamber 2, the premixing chamber 5 is located in the mixing chamber 2 and at the lower part of the mixing chamber 2, the ventilation pipe 4 is communicated with the premixing chamber 5, the shape of the premixing chamber 5 is a circular tube, the shape of the ventilation pipe 4 is a circular tube, the ventilation pipe 4 is matched and connected with the premixing chamber 5, and an air inlet pipe is provided on the side wall of the mixing chamber 2 6, the premixing chamber 5 is connected with the air inlet pipe 6, the air enters the premixing chamber 5 through the ventilation pipe 4, the gas enters the premixing chamber 5 through the air inlet pipe 6, the air and the gas are preliminarily mixed in the premixing chamber 5, and a secondary mixing chamber 7 is further provided in the mixing chamber 2, a secondary mixing structure is provided in the secondary mixing chamber 7, the lower end of the secondary mixing chamber 7 is connected with the premixing chamber 5, and the upper end is connected with the mixed gas outlet 201, the air and the gas after the preliminarily mixing enter the secondary mixing chamber 7, are mixed evenly again through the secondary mixing structure, and then are discharged to the mixing chamber 101 of the gas stove through the mixed gas outlet 201.

[0030] The secondary mixing structure includes a spiral airflow guiding structure, and the mixed gas of air and fuel gas is mixed by forming an airflow that rotates and circulates in a spiral shape from bottom to top through the spiral airflow guiding structure. The secondary mixing chamber 7 is connected with the premixing chamber 5 through the lower end of the spiral airflow guiding structure, and is connected with the mixed gas outlet 201 through the upper end of the spiral airflow guiding structure. The air and fuel gas after preliminary mixing are passed into the spiral airflow guiding structure, spirally rise and mix, and then are discharged through the mixed gas outlet 201.

[0031] The spiral airflow guiding structure includes a first high wind circle 8 and a second high wind circle 9 , wherein the second high wind circle 9 is located above the first high wind circle 8 .

[0032] The first high wind circle 8 includes a first wind circle wall 801 which is arranged in a circular tube shape, and a plurality of first air outlet channels are evenly opened on the first wind circle wall 801 and around the first wind circle wall 801, and the first air outlet channels are inclined, and the inclination direction is toward the circumferential direction of the first wind circle wall 801, and the premixing chamber 5 is located below the first high wind circle 8 and is connected with the inner side of the first high wind circle 8, and the diameter of the premixing chamber 5 is consistent with the diameter of the first high wind circle 8, and the lower end of the first high wind circle 8 is directly connected to the upper end of the premixing chamber 5, and the air and gas after preliminary mixing in the premixing chamber 5 directly enter the first high wind circle 8, and there is a gap between the first high wind circle 8 and the inner wall of the secondary mixing chamber 7.

[0033] The second high wind circle 9 includes a second wind circle wall 901 which is arranged in a circular tube shape, and a plurality of second air outlet channels are evenly opened on the second wind circle wall 901 around the second wind circle wall 901, and the second air outlet channels are inclined, and the inclination direction is toward the circumferential direction of the second wind circle wall 901, and the inclination direction of the second air outlet channel is opposite to that of the first air outlet channel, and the second wind circle wall 901 has the same diameter as the first wind circle wall 801 and is coaxially arranged, and there is a gap between the second high wind circle 9 and the inner wall of the secondary mixing chamber 7, and the first high wind circle 8 and the second high wind circle 9 are separated by a wind circle partition 10, and the diameter of the wind circle partition 10 is not greater than the outer diameter of the first wind circle wall 801, and the upper end of the second high wind circle 9 is connected to the mixed gas outlet 201, and the diameter of the mixed gas outlet 201 is consistent with the diameter of the second high wind circle 9, and the upper end of the second high wind circle 9 is directly connected to the mixed gas outlet 201.

[0034] The mixed gas of air and gas entering the first high wind circle 8 is discharged obliquely from the first air outlet channel to the gap between the first high wind circle 8 and the side wall of the secondary mixing chamber 7, and then enters the second high wind circle 9 from the second air outlet channel. After the mixed gas of air and gas burns in the combustion chamber, a negative pressure is formed in the combustion chamber, thereby forming a spiral rising airflow between the first high wind circle 8 and the second high wind circle 9 for mixing.

[0035] The first air outlet channel includes a first air outlet 802, which is located on the first wind circle wall 801 and is square in shape. A first baffle 803 is matched with the first air outlet 802, one side of the first baffle 803 is fixedly connected to one side of the first air outlet 802, and the other side of the first baffle 803 is tilted and opened outward; the second air outlet channel includes a second air outlet 902, which is located on the second wind circle wall 901 and is square in shape. A second baffle 903 is matched with the second air outlet 902, one side of the second baffle 903 is fixedly connected to one side of the second air outlet 902, and the other side of the second baffle 903 is tilted and opened outward.

[0036] An air inlet chamber 11 is provided between the premixing chamber 5 and the inner wall of the mixing chamber 2. The air inlet chamber 11 is arranged around the premixing chamber 5. The air inlet chamber 11 is isolated from the secondary mixing chamber 2. A plurality of first air inlet holes 1612 are evenly distributed around the premixing chamber 5 on the side wall of the premixing chamber 5. The first air inlet holes 1612 are communicated with the air inlet chamber 11. The air inlet chamber 11 is communicated with the air inlet pipe 6. The size of the first air inlet hole 1612 is much smaller than that of the air inlet pipe 6. The input gas is dispersed through the air inlet chamber 11 and the first air inlet holes 1612, so that the gas introduced into the premixing chamber 5 is distributed as evenly as possible.

[0037] The ignition and failure protection device 3 is located in the middle of the burner head 1. After the long-lasting flame is turned on in the burner head 1, since the ignition and failure protection device 3 is far away from the edge of the burner head 1, it is not easy for soup, water or other liquids on the stove to splash onto the ignition and failure protection device 3 to extinguish the flame, and the ignition needle 19 is not easy to get dirty due to being stuck with soup or other liquids; the ignition and failure protection device 3 includes a mounting seat, which is mounted on the bottom of the inner side of the burner head 1, and the ignition needle 19 and the failure protection sensing probe 20 are mounted on the mounting seat, and the ignition needle 19 and the failure protection sensing probe 20 extend out of the mounting seat respectively, and the mounting seat has a long-lasting flame hole 22, and the long-lasting flame hole 22 is located below the flameout protection sensing probe 20 and the ignition needle 19, so that the ever-open flame can burn the flameout protection sensing probe 20, the ever-open flame hole 22 is connected to the ever-open flame air intake pipe 266, the ever-open flame air intake pipe 266 is connected to the gas air intake pipe 296 and the ventilation pipe 4, the gas enters the ever-open flame air intake pipe 266 from the gas air intake pipe 296, the air enters the ever-open flame air intake pipe 266 from the ventilation pipe 4, and the gas and air are mixed in the ever-open flame air intake pipe 266; the mounting seat is covered with a fire cap 21, the fire cap 21 is located above to cover the ever-open flame fire hole and the ignition needle 19, and blocks liquids such as soup and water that are spilled from above.

[0038] In this embodiment, the long-fire air inlet pipe 266 passes through the bottom of the burner 1 and the mixing chamber 2 in the vertical direction, and passes through the first high wind circle 8, the second high wind circle 9 and the center of the premixing chamber 5. The lower end of the long-fire air inlet pipe 266 is located in the ventilation pipe 4 and is connected to the ventilation pipe 4. The gas air inlet pipe 296 is located on the outer wall of the ventilation pipe 4. One end of the gas air inlet pipe 296 passes through the wall of the ventilation pipe 4 and is connected to the outer wall of the long-fire air inlet pipe 266 and is connected to the long-fire air inlet pipe 266.

[0039] The mounting seat includes a bottom ring 13, which is installed at the bottom of the burner head 1. A top ring 14 is provided on the bottom ring 13. Both the bottom ring 13 and the top ring 14 are arranged in an annular shape. The top ring 14 includes a top plate 1401, which is arranged in an annular shape. The top plate 1401 is located above the bottom ring 13. The outer edge of the top plate 1401 matches the outer side wall of the bottom ring 13. A gap is provided between the top plate 1401 and the bottom ring 13, and the gap is a long open flame hole 22. The inner edge of the top plate 1401 extends downward to form a side plate 1402, and the side plate 1402 is arranged in an annular shape. The side plate 1402 is located on the inner side of the bottom ring 13, and a mixed gas cavity is formed between the side plate 1402 and the inner side wall of the bottom ring 13 15, the lower end of the side plate 1402 extends toward the inner wall of the bottom ring 13 to form a bottom plate 1403, and the bottom plate 1403 is arranged in a ring shape. The bottom plate 1403 is connected to the inner wall of the bottom ring 13, and the side plate 1402 is provided with a plurality of second air inlet holes 16, and the second air inlet holes 16 connect the long-fire air inlet pipe 266 and the mixed gas chamber 15. The mixture of fuel gas and air enters from the long-fire air inlet pipe 266 and enters the mixed gas chamber 15 through the second air inlet holes 16. The plurality of second air inlet holes 16 are evenly distributed around the side plate 1402, and the amount of gas entering the mixed gas chamber 15 is evenly distributed. The long-fire hole 22 is arranged around the mixed gas chamber 15 in a slit shape, so that the amount of gas discharged from the long-fire hole 22 is evenly distributed, so that the long-fire burns evenly.

[0040] The outer edge of the fire cap 21 extends out of the outside of the bottom ring 13 in all directions, shielding the ignition needle 19, the flameout sensor probe 20 and the ever-opening flame hole 22 at the top.

[0041] The ever-open flame air inlet pipe 266 is located below the bottom ring 13, and the ever-open flame air inlet pipe 266 vertically passes through the bottom of the burner 1. The upper end of the ever-open flame air inlet pipe 266 is connected to the interior of the bottom ring 13, and the upper end of the ever-open flame air inlet pipe 266 is located in the middle of the bottom ring 13. The mixture of gas and air enters the inner cavity of the bottom ring 13 from the middle of the bottom ring 13, and then enters the mixed gas cavity 15 from the surrounding air inlet holes 16, so that the gas volume is evenly distributed.

[0042] A connecting head 18 is provided inside the side panel 1402, and a supporting edge 17 is provided on the inner wall of the side panel 1402. The connecting head 18 is supported on the supporting edge 17, and the ignition needle 19 and the fire-fighting sensing probe 20 are installed on the connecting head 18. The ignition needle 19 and the fire-fighting sensing probe 20 are both located above the top panel 1401.

[0043] The lower end of the connector 18 is connected to a protective tube 25 , which is vertically located in the middle of the bottom ring 13 and the long-fire air intake pipe 266 . The wires of the ignition needle 19 and the fire protection sensing probe 20 are arranged in the protective tube 25 .

[0044] An electronic guide rod 24 is provided in the protection tube 25, and the protection tube 25 is sleeved on the electronic guide rod 24. Two wire holes 2401 are respectively provided in the electronic guide rod 24. The wires of the ignition needle 19 and the failure protection sensing probe 20 are respectively located in the two wire holes 2401 to avoid mutual interference between the two wires.

[0045] A first limiting edge 27 is provided at the upper end of the mounting seat, and two limiting notches 2701 are provided on the first limiting edge 27. The ignition needle 19 and the flameout sensing probe 20 are both sleeved with a ceramic sleeve 23, and the ceramic sleeve 23 is matched with the limiting notches 2701. The ignition needle 19 and the flameout sensing probe 20 are respectively placed in the two limiting notches 2701 through the corresponding ceramic sleeves 23 to prevent the ignition needle 19 and the flameout sensing probe 20 from moving and fix their positions.

[0046] The first limiting edge 27 is arranged in a ring shape, and the lower end of the primer 21 is provided with a second limiting edge 28 in a ring shape, the second limiting edge 28 matches the first limiting edge 27, and the lower end of the second limiting edge 28 has two installation notches 2801, the two installation notches 2801 respectively match the ignition needle 19 and the ceramic sleeve 23 on the protection sensing probe 20, the primer 21 covers the upper surface of the top plate 1401, the lower surface of the second limiting edge 28 contacts the upper surface of the top plate 1401, the second limiting edge 28 is located on the outside of the first limiting edge 27 and is arranged around the first limiting edge 27, or the first limiting edge 27 is located on the outside of the second limiting edge 28 and is arranged around the second limiting edge 28, to prevent the primer 21 from moving around.

[0047] The height of the upper end of the fire cap 21 is not higher than the lowest height of the gas hole on the inner wall of the burner head 1, so as to avoid the fire cap 21 being damaged by the burning of the fire for a long time and to improve the service life of the fire cap 21.

[0048] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A commercial gas stove core, characterized in that: It comprises a burner head, a gas mixing structure and a ventilation pipe which are arranged in sequence from top to bottom, a gas mixing chamber is provided between the inner wall and the outer wall of the burner head, an ignition failure protection device is arranged in the burner head, a plurality of groups of combustion holes which are connected with the gas mixing chamber are arranged on the inner wall of the burner head, a group of the combustion holes comprises a first combustion hole and a second combustion hole, the first combustion hole is arranged upwardly and tilted along a direction perpendicular to a section of the inner wall of the burner head, the second combustion hole extends in the direction of the first combustion hole and is arranged upwardly and tilted, a plurality of groups of the combustion holes are evenly distributed on the inner wall of the burner head, the lower end of the burner head is connected with the gas mixing structure, the gas mixing structure is connected with the gas mixing chamber, an air inlet pipe which is connected with the gas mixing structure is arranged on the outer wall of the gas mixing structure, the lower end of the gas mixing structure is connected with the ventilation pipe, the ventilation pipe is connected with the gas mixing structure; The gas mixing structure comprises a mixing chamber, the upper end of the mixing chamber is provided with a mixed gas outlet, the mixed gas outlet is communicated with the mixing chamber, the lower part of the mixing chamber is communicated with a ventilation pipe, a premixing chamber is provided in the lower part of the mixing chamber, the ventilation pipe is communicated with the premixing chamber, the air inlet pipe is located on the side wall of the mixing chamber and is communicated with the premixing chamber, a secondary mixing chamber is also provided in the mixing chamber, a secondary mixing structure is provided in the secondary mixing chamber, the lower end of the secondary mixing chamber is communicated with the premixing chamber and the upper end is communicated with the mixed gas outlet, the secondary mixing structure comprises a spiral airflow guiding structure to make the gas flow in a spiral shape from bottom to top for mixing, the secondary mixing chamber is communicated with the premixing chamber through the lower end of the spiral airflow guiding structure, and is communicated with the mixed gas outlet through the upper end of the spiral airflow guiding structure; The spiral airflow guiding structure includes a first high wind circle and a second high wind circle, the second high wind circle is located above the first high wind circle, the first high wind circle includes a first wind circle wall arranged in a circular tube shape, a plurality of first air outlet channels are evenly opened on the first wind circle wall around the first wind circle wall, the first air outlet channels are inclined, and the inclination direction is toward the circumferential direction of the first wind circle wall, the premixing chamber is located below the first high wind circle and is connected to the inner side of the first high wind circle, and there is a gap between the first high wind circle and the inner wall of the secondary mixing chamber; the second high wind circle includes a second wind circle arranged in a circular tube shape The second wind circle wall has a plurality of second air outlet channels evenly arranged around the second wind circle wall, the second air outlet channels are arranged obliquely, and the inclination direction is toward the circumferential direction of the second wind circle wall, the second air outlet channels are inclined in the opposite direction to the first air outlet channels, the second wind circle wall has the same diameter as the first wind circle wall and is coaxially arranged, there is a gap between the second high wind circle and the inner wall of the secondary mixing chamber, the first high wind circle and the second high wind circle are separated by a wind circle partition, the diameter of the wind circle partition is not greater than the outer diameter of the first wind circle wall, and the upper end of the first high wind circle is connected to the mixed gas outlet; An air inlet cavity is provided between the premixing chamber and the inner wall of the mixing chamber, the air inlet cavity is arranged around the premixing chamber, the air inlet cavity is isolated from the secondary mixing chamber, a plurality of first air inlet holes are evenly distributed around the premixing chamber on the side wall of the premixing chamber, the first air inlet holes are connected to the air inlet cavity, and the air inlet cavity is connected to the air inlet pipe; The first air outlet channel includes a first air outlet, which is located on the first air circle wall and is square in shape. A first baffle is matched with the first air outlet, one side of the first baffle is fixedly connected to one side of the first air outlet, and the other side of the first baffle is tilted and opened toward the outside; the second air outlet channel includes a second air outlet, which is located on the second air circle wall and is square in shape. A second baffle is matched with the second air outlet, one side of the second baffle is fixedly connected to one side of the second air outlet, and the other side of the second baffle is tilted and opened toward the outside.

2. The commercial gas stove core according to claim 1, characterized in that: The ignition and failure protection device is located in the middle of the burner head, and the ignition and failure protection device includes a mounting seat, which is installed at the inner bottom of the burner head. An ignition needle and a failure protection sensing probe are installed on the mounting seat, and the ignition needle and the failure protection sensing probe extend out of the mounting seat respectively. A long-open flame hole is provided on the mounting seat, and the long-open flame hole is located below the failure protection sensing probe and the ignition needle. The long-open flame hole is connected with a long-open flame air intake pipe, and the lower end of the long-open flame air intake pipe is connected with a ventilation pipe, and the long-open flame air intake pipe is also connected with a gas air intake pipe. A fire cap is covered on the mounting seat, and the fire cap is located on the top to cover the long-open flame hole.

3. The commercial gas stove core according to claim 2, characterized in that: The mounting seat includes a bottom ring, which is installed on the bottom of the burner head. A top ring is provided on the bottom ring. The bottom ring and the top ring are both arranged in a ring shape. The top ring includes a top plate, which is located above the bottom ring. The outer edge of the top plate matches the outer side wall of the bottom ring. A gap is provided between the top plate and the bottom ring, and the gap is a long-fire hole. The inner edge of the top plate extends downward to form a side plate, and the side plate is located on the inner side of the bottom ring. A mixing air chamber is formed between the side plate and the inner side wall of the bottom ring. The lower end of the side plate extends toward the inner side wall of the bottom ring to form a bottom plate, and the bottom plate is connected to the inner side wall of the bottom ring. A plurality of second air inlet holes are provided on the side plate, and the second air inlet holes connect the long-fire air inlet pipe and the mixing air chamber. The outer edge of the fire cap extends out of the outside of the bottom ring in all directions.

4. The commercial gas stove core according to claim 3, characterized in that: A connector is provided inside the side plate, a supporting edge is provided on the inner wall of the side plate, the connector is supported on the supporting edge, the ignition needle and the flameout sensing probe are installed on the connector, and the ignition needle and the flameout sensing probe are both located above the top plate.

5. The commercial gas stove core according to claim 2, characterized in that: A first limiting edge is provided at the upper end of the mounting seat, and two limiting notches are provided on the first limiting edge. The ignition needle and the fire protection sensing probe are both provided with ceramic sleeves, and the ceramic sleeves are matched with the limiting notches. The ignition needle and the fire protection sensing probe are respectively placed in the two limiting notches through corresponding ceramic sleeves. The first limiting edge is arranged in a ring shape, and a second limiting edge is arranged in a ring shape at the lower end of the primer cap, and the second limiting edge matches the first limiting edge. The lower end of the second limiting edge has two installation notches, and the two installation notches respectively match the ceramic sleeves on the ignition needle and the fire protection sensing probe.

6. The commercial gas stove core according to claim 2, characterized in that: The height of the upper end of the fire cap is not higher than the lowest height of the combustion holes on the inner wall of the burner head.

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