Three-ring burner for domestic gas stove

Abstract

The application discloses a three-ring combustion burner of a household gas stove, which comprises an air inlet base, a three-ring combustion burner distributor, three air inlet joints arranged on one side of the bottom of the air inlet base, and three air outlet nozzles arranged horizontally and inwardly on the top of the air inlet base; the air inlet base is fixed on the base penetrating hole of a stove surface partition plate in a penetrating mode, the three-ring combustion burner distributor and the three air outlet nozzles are arranged above the stove surface partition plate, the three air inlet joints are arranged below the stove surface partition plate, and an open air horizontal entering space is arranged between the stove surface partition plate and the bottom of the base; the air horizontal entering space is communicated with an inner ring combustion air supplement hole, a middle ring combustion air supplement hole and three gas injection port openings; the product provides sufficient external air for the air outlet nozzles during gas injection, more air is mixed with the gas, and sufficient oxygen is provided for combustion, so that the combustion is sufficient; no gas injection port is arranged in the gas stove, and the gas cannot leak in the gas stove, thereby preventing the safety hidden danger caused by the leakage of the gas in the gas stove.

Description

TECHNICAL FIELD

[0001] The present application relates to a gas, air intake device of a gas stove, in particular to a three-ring combustion burner head of a household gas stove. BACKGROUND

[0002] For example 1: CN216408951U disclosed a three-ring range burner, including an integrally formed burner head 1, the burner head 1 is detachably connected with a fire cap 2 for gas outlet and fire division and an injection pipe assembly 3 for air inlet, the injection pipe assembly 3 includes an injection pipe base 31 and several injection pipes 32, the injection pipe 32 includes a fixed injection pipe 321 integrally formed with the injection pipe base 31 and a movable injection pipe 322 detachably connected with the injection pipe base 31. The total number of injection pipes 32 is three, two of the three injection pipes 32 are fixed injection pipes 321 and the other is a movable injection pipe 322. The injection pipe 32 is radial with small caliber at the air inlet and large caliber at the gas outlet.

[0003] The injection pipe assembly 3 of the three-ring range burner with the above structure adopts the traditional injection pipe installation method. When the three-ring range burner is installed, the burner head 1 and the fire cap 2 are arranged above the gas stove, and the injection pipe assembly 3 is arranged inside the gas stove. Some air inlet holes are opened in the bottom shell of the gas stove for gas injection air supplement. The three-ring combustion has three gas injection nozzles inside the gas stove, and a large amount of air is required to fully mix the gas. In addition, most of the existing gas stoves are embedded on the top of the kitchen stove, and the bottom shell of the gas stove is completely placed inside the kitchen stove. The kitchen has a cabinet door, and people with gas safety awareness reserve the cabinet door gap for air intake when installing the cabinet door. Some open several air holes for air intake for ventilation. Some people with weak safety awareness or do not know that ventilation is required to use the gas stove. For these people, the use safety risk is the largest. The three gas injection nozzles have higher ventilation requirements than the two gas injection nozzles of the old two-ring combustion. Without good ventilation conditions, if the gas injection overflows (leaks) in the gas stove, the gas cannot diffuse outward, and the gas will accumulate more and more, which may eventually cause internal deflagration, and in severe cases, may cause explosion, which has a large use safety risk.

[0004] For example 2: The State Intellectual Property Office of China published CN209763071U, which discloses a high-power three-ring burner for a stove, including a burner head 1, a flame distributor seat 2, an ignition needle 3, an induction needle 4, a center burner cap 5, an inner ring burner cap 6, and an outer ring burner cap 7. The flame distributor seat 2 includes an inner annular gas groove 21, an outer annular gas groove 22, a radial rib 23 connected to the inner and outer annular gas grooves on the front-back diameter line, an inner air inlet pipe 24 that communicates with the inner annular gas groove and intersects with the outer annular gas groove, and an outer air inlet pipe 25 that communicates with the outer annular gas groove and intersects with the inner annular gas groove. The burner head 1 includes a seat plate 11, an outer ring gas guide pipe 12 located on the left side of the seat plate, an inner ring gas guide pipe 13 located on the right side of the seat plate, a central gas guide pipe 14 located in the middle of the seat plate, a central ejector pipe 15, an inner ejector pipe 16, and an outer ejector pipe 17. The part of the central gas guide pipe 14 located on the upper part of the seat plate 11 is the central flame cover seat, and the inner wall of the central flame cover seat is provided with an axial positioning protrusion 141.

[0005] The central ejector tube 15, inner ejector tube 16, and outer ejector tube 17 of the above structure are located at the bottom of the burner head 1, and the burner seat 2 is located at the top of the burner head 1. The burner of this high-power three-ring stove is installed behind the gas stove, and the burner seat 2 is arranged above the gas stove surface. The ejector tube assembly 3 on the burner head 1 is arranged inside the gas stove. The gas stove is embedded behind the kitchen cabinet and stove. If the kitchen cabinet has poor ventilation or no ventilation at all, the amount of gas ejected air will be insufficient, resulting in an imbalance between air and gas ratio, making the flame easily turn yellow and incomplete combustion. In addition, the ventilation requirements of three gas ejector nozzles are higher than those of the old two-ring burner with two gas ejector nozzles, requiring more air. Without good ventilation, if gas ejection (leakage) occurs inside the gas stove, the gas cannot diffuse to the outside and accumulates, which may eventually cause internal deflagration. In severe cases, it may cause an explosion, posing a significant safety hazard. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a reasonably designed three-ring burner head for a household gas stove. A stove surface partition plate is fixed through the air inlet base, and the entire three-ring combustion burner, three air outlet nozzles, and air inlet space are arranged on the stove surface partition plate. This design ensures that the air outlet nozzles have sufficient outside air when the gas is injected, and that the central burner, middle ring burner, and outer ring burner all have sufficient outside air for combustion. There is no gas injection port inside the gas stove, preventing gas leakage and thus avoiding safety hazards caused by gas leakage inside the gas stove.

[0007] The technical solution to the above technical problem is:

[0008] Three-ring combustion burner of household gas stove, including air inlet base (1), three-ring combustion burner (2), three air inlet joints (11) are provided on one side of bottom of air inlet base (1), three gas outlet nozzles (12) are provided inwards and transversely on top, three air inlet joints (11) are communicated by three independent air inlet passages (1101) in the interior of base, three gas outlet nozzles (12) are communicated by three independent air inlet passages (1101) in the interior of base;The three-ring combustion burner (2) includes base gas distribution disc (2A) and center fire cover (2B), middle ring combustion fire cover (2C), outer ring combustion fire cover (2D);The base gas distribution disc (2A) is sequentially provided with center air inlet hole (2A1), middle ring gas distribution groove (2A2), outer ring gas distribution groove (2A3) from center to outside, and center fire cover (2B), middle ring combustion fire cover (2C), outer ring combustion fire cover (2D) are covered on the corresponding top thereof;The reverse side of the base gas distribution disc (2A) body is provided with three air inlet passages (2A4) for gas respectively, and the three air inlet passages (2A4) are respectively communicated with center air inlet hole (2A1), middle ring gas distribution groove (2A2) and outer ring gas distribution groove (2A3) independently, and the front end of the three air inlet passages (2A4) is corresponding three gas injection port (2A5);The three gas outlet nozzles (12) are respectively aligned in the corresponding three gas injection port (2A5);The base gas distribution disc (2A) between center air inlet hole (2A1) and middle ring gas distribution groove (2A2) is provided with inner ring combustion supplementary air hole (2A6), and the base gas distribution disc (2A) between middle ring gas distribution groove (2A2) and outer ring gas distribution groove (2A3) is provided with a plurality of middle ring combustion supplementary air holes (2A7);

[0009] It also includes stove surface partition plate (3), stove surface partition plate (3) middle part is provided with base through hole (31), base through hole (31) is fixed with air inlet base (1) in through connection mode, three-ring combustion burner (2) and three gas outlet nozzles (12) are arranged above stove surface partition plate (3), three air inlet joints (11) are arranged below stove surface partition plate (3), and open type air transverse entering space (32) is arranged between the reverse side of stove surface partition plate (3) and base gas distribution disc (2A), and air transverse entering space (32) is communicated with inner ring combustion supplementary air hole (2A6), middle ring combustion supplementary air hole (2A7) and three gas injection port (2A5);The three gas outlet nozzles (12) are arranged in air transverse entering space (32) between base gas distribution disc (2A) and stove surface partition plate (3).

[0010] The three-ring combustion burner of the household gas stove has the following advantages: 1. A furnace surface partition plate is fixed on the air inlet base by threading, so as to divide the air inlet base into two sections, and the three-ring combustion burner, three gas outlet nozzles and air horizontal entering space are arranged above the furnace surface partition plate, so that the gas outlet nozzles have sufficient external air when the gas is injected, and more air is mixed with the gas after the gas is injected, so that the oxygen is sufficient during combustion, the flame is blue, and the combustion is sufficient; the external air enters the inner ring combustion air supplement hole, the middle ring combustion air supplement hole and the air horizontal entering space in a circular manner, and then rises to the air supplement holes, so that the center fire cover, the middle ring combustion fire cover and the outer ring combustion fire cover have sufficient external air during combustion, so that the center, the middle ring and the outer ring have sufficient oxygen and sufficient combustion; 2. There is no gas injection port in the gas stove, so that the gas cannot leak in the gas stove, and there is no gas leakage in the stove; since the gas outlet nozzle and the gas injection port are arranged above the furnace surface partition plate, the safety hazard caused by the leakage of the gas in the gas stove is prevented, that is, the gas stove is arranged on the top of the kitchen, the kitchen space is large, the kitchen has a ventilation door and a window, and even if a small amount of gas leaks, the gas is diluted by the air in the large space, and the flammable condition cannot be reached; 3. Since the three-ring combustion burner, the three gas outlet nozzles are arranged above the furnace surface partition plate, the dirt, carbon deposition, sewage and other dirt are also easy to clean after being used for a period of time; 4. Each gas injection port comprises a widened port recess and a reduced hole, and the three gas outlet nozzles are respectively inserted into the three widened port recesses, so that each gas injection port independently injects the gas, which is equivalent to an independent gas injection chamber, so as to prevent the gas from overflowing (leaking) when the gas is injected, and the adjacent ones are blocked, so that the air and the gas cannot be mixed; 5. The left and right surrounding walls and the bottom edges of each reduced hole are in contact with the inner half ring top of the top platform of the base, so as to form an air and gas isolation wall, so as to divide the air horizontal entering space into a gas injection required air entering space region and a combustion required air entering space region, so that the gas injection required air and the fire cover combustion required air are independently introduced from the outside, so that the air is not stolen, and the key is to prevent the gas from overflowing (leaking) to the combustion required air entering space region when the gas is injected, so as to surround the gas injection region, so that the injected gas can only enter the air inlet channel through the reduced hole, so as to prevent the gas from overflowing (leaking) when the gas is injected. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 、 Figure 2 is a perspective view of the product of the present application;

[0012] Figure 3 is a rear view of the product of the present application;

[0013] Figure 4 is a left view of the product of the present application;

[0014] Figure 5 is a right view of the product of the present invention;

[0015] Figure 6 is a front view of the product of the present invention;

[0016] Figure 6 is a front view of the product of the present invention;

[0017] Figure 7 , Figure 8 , Figure 9 is a perspective view of the product of the present invention showing the connection of the air intake base to the three-ring combustion burner;

[0018] Figure 10 is a perspective view of the product of the present invention showing the air and gas separation wall with the curved bottom edge removed;

[0019] Figure 11 , Figure 12 is a perspective view of the air intake base of the product of the present invention;

[0020] Figure 13 , Figure 14 , Figure 15 , Figure 16 is a cross-sectional view of the product of the present invention; wherein Figure 14 is a cross-sectional view of the middle air intake passage communicating with the central air intake hole; wherein Figure 15 is a cross-sectional view of the right air intake passage communicating with the middle ring gas circumferentially distributed groove; wherein Figure 16 is a cross-sectional view of the left air intake passage communicating with the outer ring gas circumferentially distributed groove;

[0021] Figure 17 , Figure 18 is an exploded view of the three-ring combustion burner of the product of the present invention;

[0022] Figure 19 is a perspective view of the product of the present invention showing the connection of the air intake base to the furnace surface partition plate;

[0023] Figure 20 is an exploded view of the air intake base and the furnace surface partition plate of the product of the present invention;

[0024] Figure 21 , Figure 22 is a perspective view of the air intake base of the product of the present invention;

[0025] Figure 23 , Figure 24 is a cross-sectional view of the three-ring combustion burner of the product of the present invention.

[0026] Air inlet base 1, base top platform 1A, nozzle mounting hollow column 1B, air distribution disc fixing foot 1C, fixing foot 1D, ignition needle 1E, flame detection needle 1F, base surrounding step 1G, three-ring combustion air distributor 2, air inlet connector 11, base internal air inlet channel 1101, air outlet nozzle 12, base air distribution disc 2A, center flame cover 2B, middle ring combustion flame cover 2C, gas inlet top baffle 2C1, middle ring flame hole 2C2, outer ring combustion flame cover 2D, outer ring flame hole 2D1, integral connecting piece 2D2, center air inlet pipe 2A0, center air inlet hole 2A1, center air inlet pipe 2AA, center air inlet hole 2AB, middle ring gas surrounding distribution groove 2A2, offset middle ring gas inlet 2A21, outer ring gas surrounding distribution groove 2A3, outer ring gas inlet 2A31, gas distribution eave plate 2A32, air inlet channel 2A4, gas injection path 2A5, widened path opening recess 2A51, variable diameter reduced hole 2A52, left surrounding wall 2A5A, top surrounding wall 2A5B, right surrounding wall 2A5C, lower flange baffle 2A5D, inner ring combustion supplementary air hole 2A6, middle ring combustion supplementary air hole 2A7, air inlet surrounding gap 2A8, air and gas isolation wall 2A9, annular baffle 2A10, inner top recess 2A11, furnace surface partition plate 3, base through connection hole 31, air transverse inlet space 32, gas injection required air inlet space area 321, combustion required air inlet space area 322, foot through connection hole 33, needle and detection needle through connection hole 34, center top wall 2B1, center ring circumference side wall 2B2, center flame hole 2B3, center air hole 2B4, center air upper pipe 2B5, center gas surrounding distribution groove 2B6, lower half channel shell 2AC, upper half air distribution disc main shell 2AD, lower half air inlet channel 2AC1, lower half center air inlet pipe 2AA1, lower half center air inlet hole 2AB1. DETAILED DESCRIPTION

[0027] A three-ring combustion burner of a household gas stove comprises an air inlet base 1 and a three-ring combustion burner 2, the overall diameter of the three-ring combustion burner 2 is generally 8-20 cm, and the diameter is determined according to the required power; the bottom side of the air inlet base 1 is provided with three air inlet joints 11, and the top is inwardly provided with three air outlet nozzles 12 arranged in a left, middle and right row; the air inlet base 1 is made of aluminum and integrally formed by aluminum die casting; the three air inlet joints 11 are arranged in a left, middle and right row with a spacing of 2-3 cm, and are arranged close to each other to achieve quick installation and connection of the gas pipe and quick screwing of the air inlet joint 11; the three air outlet nozzles 12 are connected to the three air inlet joints 11 through three independent internal air inlet channels 1101 of the base, and are respectively screwed and tightened at the end holes of the three internal air inlet channels 1101 of the base, the internal air inlet channels 1101 of the base are arranged in a left, middle and right row, that is, the three independent internal air inlet channels 1101 of the base are independent of each other and not interconnected, and the internal air inlet channels 1101 of the base are integrally formed by die casting through a die casting machine when the air inlet base is cast; preferably, the three air inlet joints 11 are respectively tightly screwed and fixedly sealed to the air inlet holes of the internal air inlet channels 1101 of the base through threads, of course, sealing glue can also be added at the threads before screwing, and the sealing effect is better; the three-ring combustion burner 2 comprises a base gas distribution disc 2A and a center fire cover 2B, a middle ring combustion fire cover 2C and an outer ring combustion fire cover 2D; the center fire cover 2B comprises a center fire hole 2B3 formed on the outer peripheral side, and is made of copper and integrally formed by a metal processing machine; the middle ring combustion fire cover 2C comprises a middle ring fire hole 2C2 formed on the outer peripheral side; the outer ring combustion fire cover 2D comprises an outer ring fire hole 2D1 formed on the outer peripheral side; preferably, the middle ring combustion fire cover 2C and the outer ring combustion fire cover 2D are connected by an integral connecting piece 2D2, so that the middle ring combustion fire cover 2C, the integral connecting piece 2D2 and the outer ring combustion fire cover 2D are integrated, and the middle ring combustion fire cover 2C and the outer ring combustion fire cover 2D are integrally formed; the middle ring combustion fire cover 2C, the integral connecting piece 2D2 and the outer ring combustion fire cover 2D are integrally formed by a metal processing machine and are made of copper; the base gas distribution disc 2A comprises a center air inlet hole 2A1, a middle ring gas distribution groove 2A2 and an outer ring gas distribution groove 2A3 arranged in sequence from the center to the outside, and the center fire cover 2B, the middle ring combustion fire cover 2C and the outer ring combustion fire cover 2D are arranged on the corresponding top; the center air inlet hole 2A1 is used for intermediate combustion of gas, the middle ring gas distribution groove 2A2 is used for the ring distribution of gas for middle ring combustion, and the outer ring gas distribution groove 2A3 is used for the ring distribution of gas for outer ring combustion.The base gas distribution disc 2A body reverse side transversely has three gas inlet channels 2A4, which are independently communicated with the central gas inlet hole 2A1, the middle ring gas distribution groove 2A2 and the outer ring gas distribution groove 2A3, and are not communicated with each other, independently conveying gas, not mixing gas and not gas channeling; the front ends of the three gas inlet channels 2A4 are three corresponding gas injection port openings 2A5, which are independently arranged in a left, middle and right row; the three gas outlet nozzles 12 are respectively and centrally aligned with the three corresponding gas injection port openings 2A5, one gas outlet nozzle 12 corresponding to one gas injection port opening 2A5, and the three gas outlet nozzles 12 are arranged in a left, middle and right row; the base gas distribution disc 2A between the central gas inlet hole 2A1 and the middle ring gas distribution groove 2A2 is provided with an inner ring combustion air supplement hole 2A6, which is used to provide sufficient air for central and middle ring combustion; the base gas distribution disc 2A between the middle ring gas distribution groove 2A2 and the outer ring gas distribution groove 2A3 is provided with a plurality of middle ring combustion air supplement holes 2A7, which are preferably four, evenly distributed in four aspects, surrounding the middle ring combustion fire cover 2C, and providing sufficient air for middle ring combustion; the outer ring combustion directly provides air from the outside;

[0028] The base gas distribution disc 2A is made of aluminum material, which is environmentally friendly and convenient for recycling in the future. It is integrally formed by aluminum die-casting machinery, so that the three gas inlet channels 2A4, the central gas inlet hole 2A1, the middle ring gas distribution groove 2A2, the outer ring gas distribution groove 2A3, the three gas injection port openings 2A5, the inner ring combustion air supplement hole 2A6 and the middle ring combustion air supplement hole 2A7 are integrally formed;

[0029] The three-ring combustion burner further comprises a furnace surface partition plate 3, the length and width of the furnace surface partition plate 3 are greater than 12 cm, the furnace surface partition plate 3 is made of stainless steel, a base penetrating through hole 31 is formed in the middle of the furnace surface partition plate 3, the base penetrating through hole 31 is fixedly connected with the air inlet base 1 in a penetrating through mode, that is, a base surrounding step 1G is formed in the middle of the air inlet base 1 by die casting, the shape of the base penetrating through hole 31 is consistent with that of the base surrounding step 1G, and the size is just suitable, the base surrounding step 1G can be inserted into the base penetrating through hole 31, and then the air inlet base 1 and the furnace surface partition plate 3 are fixedly connected by screws, the base penetrating through hole 31 is sealed, and dirt, dirty liquid, water and the like are prevented from entering the inside of the burner, the three-ring combustion burner 2 and the three air outlet nozzles 12 are arranged above the furnace surface partition plate 3, and the three air inlet connectors 11 are arranged below the furnace surface partition plate 3, the three-ring combustion burner is installed at the rear of the gas stove (after the furnace surface partition plate 3 is connected with the gas stove), the three air inlet connectors 11 are arranged in the gas stove and are used for being respectively connected with a gas stove control valve through three gas pipes, an open air transverse entering space 32 is arranged between the furnace surface partition plate 3 and the back of the base gas distribution disc 2A, the air transverse entering space 32 is directly connected with the outside, the air transverse entering space 32 is connected with the inner ring combustion air supplement hole 2A6, the middle ring combustion air supplement hole 2A7 and the three gas injection ports 2A5, the three air outlet nozzles 12 are arranged in the air transverse entering space 32 between the base gas distribution disc 2A and the furnace surface partition plate 3, the air outlet nozzles 12 cannot exceed the periphery of the base gas distribution disc 2A and can only be hidden in the back of the base gas distribution disc 2A, the purpose is to safely use gas, prevent gas from overflowing and leaking and prevent people from easily contacting.

[0030] The product mainly penetrates and fixes an air inlet base on the furnace surface partition plate, divides the air inlet base into two sections, arranges the three-ring combustion burner, the three air outlet nozzles and the air transverse entering space above the furnace surface partition plate, allows the air outlet nozzles to have sufficient outside air when the gas is injected, allows more air to mix with the gas after the gas is injected, allows the mixed air to enter the air inlet channel, allows sufficient oxygen when burning, allows the flame to be blue and allows the combustion to be sufficient, allows the outside air to enter the inner ring combustion air supplement hole and the middle ring combustion air supplement hole from the air transverse entering space in a periphery mode and to be dispersed and rise, allows the center fire cover, the middle ring combustion fire cover and the outer ring combustion fire cover to have sufficient outside air when burning, allows the center, the middle ring and the outer ring to have sufficient oxygen and to burn sufficiently.

[0031] There is no gas injection port in the gas stove, the gas cannot leak in the gas stove, there is no gas leakage in the gas stove, the gas injection port is arranged above the furnace surface partition plate, prevents the gas from leaking in the gas stove and causing a safety hazard, that is, the gas injection port is arranged at the top of the gas stove, the kitchen space outside the gas stove is large, the kitchen has a ventilation door and a window, even if there is a small amount of gas leakage, the gas is diluted by the large space air in the kitchen, and the gas cannot reach the inflammable condition.

[0032] Because the three-ring combustion burner is arranged on the furnace surface partition plate, dirt, carbon deposition, sewage and other dirt are also convenient to clean after being used for a period of time.

[0033] The three gas inlet joints 11, the three gas inlet channels 2A4, the three gas outlet nozzles 12 and the three gas injection ports 2A5 are arranged in a row from left to right.

[0034] Therefore, the left gas inlet joint 11, the gas inlet channel 2A4, the gas outlet nozzle 12, the gas injection port 2A5, the gas inlet channel 2A4 and the outer ring gas circumferential distribution groove 2A3 correspond to form an independent gas inlet pipeline, and the outer ring gas circumferential distribution groove 2A3 is correspondingly connected. The gas is input from the left gas inlet joint 11, the gas inlet channel 2A4, the gas outlet nozzle 12, the gas injection port 2A5, the gas inlet channel 2A4 to the outer ring gas circumferential distribution groove 2A3, and finally burned from the fire hole of the outer ring combustion cover 2D.

[0035] Therefore, the middle gas inlet joint 11, the gas inlet channel 2A4, the gas outlet nozzle 12, the gas injection port 2A5, the gas inlet channel 2A4 and the center gas inlet hole 2A1 correspond to form an independent gas inlet pipeline, and the center gas inlet hole 2A1 is correspondingly connected. The gas is input from the middle gas inlet joint 11, the gas inlet channel 2A4, the gas outlet nozzle 12, the gas injection port 2A5, the gas inlet channel 2A4 to the center gas inlet hole 2A1, and finally burned from the fire hole of the center cover 2B.

[0036] Therefore, the right gas inlet joint 11, the gas inlet channel 2A4, the gas outlet nozzle 12, the gas injection port 2A5, the gas inlet channel 2A4 correspond to form an independent gas inlet pipeline, and the middle ring gas circumferential distribution groove 2A2 is correspondingly connected. The gas is input from the right gas inlet joint 11, the gas inlet channel 2A4, the gas outlet nozzle 12, the gas injection port 2A5, the gas inlet channel 2A4 to the middle ring gas circumferential distribution groove 2A2, and finally burned from the fire hole of the middle ring combustion cover 2C.

[0037] Preferably: each gas injection port 2A5 comprises a widened port recess 2A51 and a variable-diameter reduced port 2A52, the variable-diameter reduced port 2A52 is inside the air inlet channel 2A4, and the variable-diameter reduced port 2A52 is arranged in the middle of the inner bottom of the widened port recess 2A51; three gas outlet nozzles 12 are respectively inserted into the corresponding widened port recess 2A51 and correspondingly aligned in the middle of the variable-diameter reduced port 2A52, and the air entering surrounding gap 2A8 is provided between the gas outlet nozzle 12 and the inner ring wall surface of the widened port recess 2A51, that is: the diameter of the gas outlet nozzle 12 is smaller than the width of the widened port recess 2A51 to form the air entering surrounding gap 2A8; preferably: the diameter size of the gas outlet nozzle 12 is less than 50% of the width size of the widened port recess 2A51, thereby forming each gas injection port 2A5 to independently inject gas, and there is no air and gas mixing between adjacent ones; the widened port recess 2A51 is equivalent to an independent gas injection chamber, which prevents gas from overflowing and leaking during gas injection; during gas injection, air enters the air inlet channel 2A4 from the air entering surrounding gap 2A8 to mix with the gas and enter the air inlet channel 2A4 from the variable-diameter reduced port 2A52, and there is a block between adjacent ones, so that air and gas cannot mix between adjacent ones, and air and gas are independently introduced.

[0038] The widened port recess 2A51 and the variable-diameter reduced port 2A52 are integrally pressure-cast with the base gas distribution disc 2A during pressure casting.

[0039] Preferably: each widened port recess 2A51 comprises at least a left surrounding wall 2A5A, a top surrounding wall 2A5B, and a right surrounding wall 2A5C, and the left surrounding wall 2A5A, the top surrounding wall 2A5B, and the right surrounding wall 2A5C are adjacent and integrally connected; the variable-diameter reduced port 2A52 is an inner tapered port that gradually decreases from outside to inside, and gas is introduced through the variable-diameter reduced port 2A52; the top surrounding wall 2A5B is the inner top wall of the reverse side of the base gas distribution disc 2A; the left surrounding wall 2A5A and the right surrounding wall 2A5C are formed by extending downward from the inner top wall of the reverse side of the base gas distribution disc 2A to form protrusions, tabs, or plates, etc.

[0040] The left surrounding wall 2A5A, the top surrounding wall 2A5B, and the right surrounding wall 2A5C are integrally pressure-cast with the base gas distribution disc 2A during pressure casting.

[0041] Preferably: the bottom edge of each variable-diameter reduced port 2A52 extends downward to have a downward turned edge baffle 2A5D, and the left surrounding wall 2A5A, the downward turned edge baffle 2A5D, and the right surrounding wall 2A5C are adjacent and integrally connected; the downward turned edge baffle 2A5D is used to block gas and increase the port area of the variable-diameter reduced port 2A52 to prevent the gas in the variable-diameter reduced port 2A52 from overflowing and leaking downward, and at the same time, in a limited space, the downward turned edge baffle 2A5D serves as a foot pad to increase the space volume of the widened port recess 2A51;

[0042] The bottom edge of the left surrounding wall 2A5A, the top surrounding wall 2A5B, the right surrounding wall 2A5C and the bottom edge of the lower flange baffle 2A5D are horizontally arranged;

[0043] Preferably, the air inlet base 1 comprises at least one base top platform 1A and three nozzle mounting hollow columns 1B, the top surface of the base top platform 1A is horizontal, the base top platform 1A and the three nozzle mounting hollow columns 1B are arranged above the furnace surface partition plate 3, the three nozzle mounting hollow columns 1B are vertically fixed to the top of the base top platform 1A, and the inner side walls of the three nozzle mounting hollow columns 1B are each transversely fixedly connected with the air outlet nozzle 12 by screws; the inner hollow part of the nozzle mounting hollow column 1B is the base internal air inlet channel 1101; the nozzle mounting hollow column 1B has a certain height, so that the air outlet nozzle 12 has installation space, better air inlet space, and the air outlet nozzle 12 is better arranged inside the widened entrance recess portion to align with the variable-diameter reduced orifice;

[0044] The three nozzle mounting hollow columns 1B are integrally pressure-cast with the air inlet base 1;

[0045] The spacing between the three nozzle mounting hollow columns 1B is 1.5-3 cm, and the height is 1.5-3.5 cm; the appropriate size is set according to the required power.

[0046] As shown in Figure 10 , Figure 23 , Figure 23 is a sectional view of the air transverse inlet space 32; the bottom edges of all the left surrounding wall 2A5A, the right surrounding wall 2A5C and each variable-diameter reduced orifice 2A52 are flatly abutted and pressed against the inner half-ring top of the base top platform 1A, forming an air and gas isolation wall 2A9 as shown in Figure 10 ; other unnecessary lines are deleted, and only the bottom edge curved part is the air and gas isolation wall 2A9, which divides the air transverse inlet space 32 into a gas injection required air inlet space region 321 and a combustion required air inlet space region 322, and the gas injection required air inlet space region 321 is located at the base top platform 1A region; the air required for gas injection and the air required for fire cover combustion are independently introduced from the outside, and do not compete for air with each other, the key is to prevent gas overflow and leakage to the combustion required air inlet space region 322 during gas injection, and the air and gas isolation wall 2A9 surrounds the gas injection region in a half-enclosed manner, so that the injected gas can only enter the air inlet channel from the variable-diameter reduced orifice, preventing gas overflow and leakage during gas injection.

[0047] The middle ring combustion supplementary air hole 2A7 closest to the widened entrance recess portion 2A51 is located directly above the base top platform 1A.

[0048] Preferably, as shown in Figure 7 , Figure 12As shown: the middle ring combustion air hole 2A7 is located directly above the top platform 1A of the base, and is formed by two small air inlet holes 2A71 extending upwards and converging together, here in the shape of an inverted "Y" middle ring combustion air hole 2A7; the two small air inlet holes 2A71 are hollowed out in the base gas distribution disc 2A body between the three adjacent air inlet channels 2A4; the base gas distribution disc 2A has four directions, and each direction has a middle ring combustion air hole 2A7.

[0049] Due to the position of the base gas distribution disc 2A here needs to be set with a middle air inlet channel 2A4, there is not enough space, so two small air inlet holes 2A71 are hollowed out in the base gas distribution disc 2A body between the three adjacent air inlet channels 2A4, and the two small air inlet holes 2A71 converge together after the top to form a middle ring combustion air hole 2A7.

[0050] Preferably: the center fire cover 2B is integrally formed, including a center top wall 2B1, a center circumferential side wall 2B2, a center fire hole 2B3 is arranged on the upper segment of the center circumferential side wall 2B2 for fire burning, a center air hole 2B4 is arranged in the center top wall 2B1, the inner hole of the center air hole 2B4 extends downwardly with a center air upper pipe 2B5, and the center air upper pipe 2B5 and the circumferential side wall form a center gas circumferential distribution groove 2B6. The center air upper pipe 2B5 can form the center air hole 2B4; the center fire cover 2B including the center fire hole 2B3, the center top wall 2B1, the center circumferential side wall 2B2, and the center air upper pipe 2B5 is integrally formed by metal processing machinery, thereby forming the center air hole 2B4 and the center gas circumferential distribution groove 2B6.

[0051] The center air inlet hole 2A1 is formed by the base gas distribution disc 2A extending upwardly with a center air inlet pipe 2A0 in the middle;

[0052] The center air inlet pipe 2A0 has a center air inlet pipe 2AA vertically fixed in the middle, the center air inlet pipe 2AA has a center air inlet hole 2AB inside, the center air inlet hole 2AB penetrates through the base gas distribution disc 2A and communicates with the air transverse inlet space 32, and the center air inlet hole 2A1 surrounds the center air inlet pipe 2AA; the center air inlet pipe 2AA is arranged in the middle of the center air inlet hole 2A1;

[0053] The center circumferential side wall 2B2 of the center fire cover 2B is inserted into the center air inlet hole 2A1 to seal and connect the center circumferential side wall 2B2, which can be inserted into the center air inlet hole 2A1 to form a tight connection, the center air inlet hole 2A1, the center gas circumferential distribution groove 2B6, and the center fire hole 2B3 are communicated, the gas enters the center air inlet hole 2A1, then flows to the center gas circumferential distribution groove 2B6, and then is sprayed out for combustion at the center fire hole 2B3;

[0054] The center air upper pipe 2B5 is inserted into the center air inlet pipe 2AA to form a tight sealing connection, and the center air hole 2B4, the center air upper pipe 2B5, the center air inlet hole 2AB, and the air transverse inlet space 32 are communicated; the air required for the center fire cover 2B to burn is from the air transverse inlet space 32, and the air is branched from the center air inlet hole 2AB upwards from the air transverse inlet space 32, and then comes out from the top of the center air hole 2B4 of the center air upper pipe 2B5 to provide supplemental central oxygen for the fire core of the center fire cover 2B, reduce the air distribution of the inner ring combustion supplemental air hole 2A6, prevent the air of the fire burning of the center fire cover 2B from being stolen by the fire burning of the middle ring combustion cover 2C, provide more oxygen for the center and middle ring combustion, and make the internal combustion of the fire more sufficient.

[0055] Preferably, the base gas distribution disc 2A includes an annular shielding plate 2A10 extending downward along the bottom edge of the annular shielding plate 2A10, and the reverse side of the annular shielding plate 2A10 is provided with an inner top recess 2A11 covering and surrounding the upper section of the three nozzle mounting hollow columns 1B and the air outlet nozzle 12; the inclined annular shielding plate 2A10 can make the dirt, carbon deposition and dirty liquid fall on the top of the stove surface partition plate, prevent the dirt, carbon deposition and dirty liquid from entering the gas injection port 2A5, the air outlet nozzle 12 and the air inlet channel 2A4, and prevent other sundries from entering the gas injection port 2A5, the air outlet nozzle 12 and the air inlet channel 2A4; prevent hands from touching the air outlet nozzle 12 and the gas injection port 2A5; and ensure the safety of gas use.

[0056] Preferably, the air inlet base 1 extends rearwardly to have a gas distribution disc fixing foot stand 1C arranged below the stove surface partition plate 3, and the rear portion of the gas distribution disc fixing foot stand 1C extends upwardly to have a fixing leg 1D; the stove surface partition plate 3 is provided with a leg penetrating hole 33, and the fixing leg 1D penetrates upwardly from the leg penetrating hole 33 to be fixed above the stove surface partition plate 3, the fixing leg 1D just penetrates upwardly from the leg penetrating hole 33 to be fixed above the stove surface partition plate 3, the leg penetrating hole 33 is sealed, the dirt and dirty liquid are prevented from leaking into the gas stove, the top of the fixing leg 1D is fixedly connected with the reverse side of the base gas distribution disc 2A by screws; the gas distribution disc fixing foot stand 1C is used to strengthen the fixing of the stove surface partition plate 3 itself, and the base gas distribution disc 2A is fixedly connected with the fixing leg 1D to make the base gas distribution disc 2A, the air inlet base 1, the gas distribution disc fixing foot stand 1C and the stove surface partition plate 3 form an assembly, and then the assembly is installed in the gas stove shell to improve the production efficiency.

[0057] The gas distribution disc fixing foot 1C is fixed at the back of the ignition needle 1E and the flame detection needle 1F, the ignition needle 1E is used for ignition when burning; the flame detection needle 1F is used for flame detection after burning; the furnace surface partition plate 3 is provided with a fire needle and detection needle through hole 34, the ignition needle 1E and the flame detection needle 1F pass through the corresponding fire needle and detection needle through hole 34 upwards, the ignition needle 1E and the flame detection needle 1F can just pass through the corresponding fire needle and detection needle through hole 34 upwards, after passing through, the fire needle and detection needle through hole 34 is sealed, to prevent dirt, dirty liquid and the like from leaking into the gas stove, and the top end is close to the center fire cover 2B, ignition is easy, and the detection of the burning flame is accurate.

[0058] Preferably, the outer ring gas entering port 2A31 of the outer ring gas distribution groove 2A3 is vertically extended outward on the inner side wall above the outer ring gas entering port 2A31, and the gas distribution eaves plate 2A32 is arranged on the outer ring gas entering port 2A31, the outer ring gas entering port 2A31 is partially shielded by the gas distribution eaves plate 2A32, the width of the outer ring gas entering port 2A31 is greater than the width of the outer ring gas distribution groove 2A3, to prevent the gas pressure of the outer ring gas entering port 2A31 from being too high; after the gas enters from the outer ring gas entering port 2A31 and collides with the gas distribution eaves plate 2A32, the gas is distributed to the left and right of the outer ring gas distribution groove 2A3, to prevent the gas from directly spraying the fire hole and to balance the internal gas pressure as much as possible; the outer ring gas distribution groove 2A3 is connected with the gas inlet channel 2A4 belonging to the outer ring gas inlet through the outer ring gas entering port 2A31; the outer ring gas entering port 2A31 is the end of the leftmost gas inlet channel 2A4 connected with the gas entering the outer ring gas distribution groove 2A3.

[0059] The inner side edge of the groove bottom of the middle ring gas distribution groove 2A2 is provided with a bias middle ring gas entering port 2A21; the outer edge of the middle ring combustion fire cover 2C is extended outward to form a gas inlet top baffle 2C1; after the middle ring combustion fire cover 2C covers the middle ring gas distribution groove 2A2, the gas inlet top baffle 2C1 of the middle ring combustion fire cover 2C is sealed and covers the top of the bias middle ring gas entering port 2A21; the width of the bias middle ring gas entering port 2A21 is greater than the width of the middle ring gas distribution groove 2A2, to prevent the gas pressure of the bias middle ring gas entering port 2A21 from being too high; after the gas enters from the bias middle ring gas entering port 2A21 and collides with the gas inlet top baffle 2C1, the gas is distributed to the left and right of the middle ring gas distribution groove 2A2, to prevent the gas from directly spraying the fire hole and to balance the internal gas pressure as much as possible; the middle ring gas distribution groove 2A2 is connected with the gas inlet channel 2A4 belonging to the middle ring gas inlet through the bias middle ring gas entering port 2A21; the bias middle ring gas entering port 2A21 is the end of the rightmost gas inlet channel 2A4 connected with the gas entering the middle ring gas distribution groove 2A2.

[0060] Further to the preferred technical solutions:

[0061] As Figure 17 , Figure 18As shown: in order to make the internal passage of the three lateral sections of the air inlet passage 2A4 gradually larger from the reducing orifice 2A52, the air inlet passage 2A4 has a wider gas flow mixing space, and the gas flow mixes with the air, the base gas distribution disc 2A is manufactured in two shell parts, and the base gas distribution disc 2A includes a lower half passage shell part 2AC and an upper half gas distribution disc main shell part 2AD;

[0062] The lower half passage shell part 2AC is provided with three lower half circular air inlet passages 2AC1, which are arranged in a left, middle and right row; the middle one of the three lower half circular air inlet passages extends upward in the middle of the end to form a lower half center air inlet pipe 2AA1, and the inside of the lower half center air inlet pipe 2AA1 is a lower half center air inlet hole 2AB1 penetrating through the lower half passage shell part 2AC;

[0063] The lower half passage shell part 2AC is integrally formed by pressure casting.

[0064] The reverse side of the upper half gas distribution disc main shell part 2AD is provided with three upper half circular air inlet passages 2AC2, which are arranged in a left, middle and right row; the middle of the center air inlet hole 2A1 is provided with an upper half center air inlet pipe 2AA2, and the inside of the upper half center air inlet pipe 2AA2 is an upper half center air inlet hole 2AB2, and the center air inlet hole 2A1 surrounds the upper half center air inlet pipe 2AA2;

[0065] The center air inlet hole 2A1, the middle ring gas ring distribution groove 2A2 and the outer ring gas ring distribution groove 2A3 are sequentially arranged on the upper half gas distribution disc main shell part 2AD;

[0066] The lower half passage shell part 2AC and the upper half gas distribution disc main shell part 2AD are connected by a plurality of screws penetrating through the lower half passage shell part 2AC and screwed on the reverse side of the upper half gas distribution disc main shell part 2AD to form a sealed connection;

[0067] The upper half center air inlet pipe 2AA2 can be inserted into the lower half center air inlet pipe 2AA1 to form a tight connection, and thus the lower half center air inlet hole 2AB1 and the upper half center air inlet hole 2AB2 form a complete center air inlet hole 2AB;

[0068] Thus, the three lower half circular air inlet passages 2AC1 and the three upper half circular air inlet passages 2AC2 are adapted to form three complete air inlet passages 2A4.

[0069] The above is only a preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can be made, which are also considered to be within the scope of protection of the present application.

Claims

1. A three-ring combustion burner head for a household gas stove, comprising an air inlet base (1) and a three-ring combustion distributor (2). The air inlet base (1) has three air inlet connectors (11) on one side of its bottom and three air outlet nozzles (12) arranged horizontally inward on its top. The three air outlet nozzles (12) are connected to the three air inlet connectors (11) through three independent internal air inlet channels (1101). The three-ring combustion distributor (2) includes a base gas distribution plate (2A) and a central burner cap (2B), a middle ring combustion burner cap (2C), and an outer ring combustion burner cap (2D). The base gas distribution plate (2A) has a central air inlet hole (2A1), a middle ring gas distribution groove (2A2), and an outer ring gas distribution groove (2A3) arranged sequentially from the center outward. The corresponding top of the central burner cap (2B), the middle ring combustion burner cap (2C), and the outer ring combustion burner cap (2D) are covered. The base gas distribution plate (2A) has three independent gas inlet channels (2A4) horizontally opened on the reverse side of its main body. The three gas inlet channels (2A4) are independently connected to the central gas inlet (2A1), the middle ring gas distribution groove (2A2), and the outer ring gas distribution groove (2A3). The front end of the three gas inlet channels (2A4) is a corresponding gas injection port (2A5). The three gas outlet nozzles (12) are respectively centered and aligned with the corresponding gas injection ports (2A5). The base gas distribution plate (2A) between the central gas inlet (2A1) and the middle ring gas distribution groove (2A2) is provided with an inner ring combustion supplement air hole (2A6), and the base gas distribution plate (2A) between the middle ring gas distribution groove (2A2) and the outer ring gas distribution groove (2A3) is provided with a number of middle ring combustion supplement air holes (2A7). Its characteristic is that: It also includes a furnace surface partition plate (3), with a base through hole (31) in the middle of the furnace surface partition plate (3), and a fixed air intake base (1) through the base through hole (31). The three-ring combustion distributor (2) and three air outlet nozzles (12) are set on the furnace surface partition plate (3), and three air inlet connectors (11) are set below the furnace surface partition plate (3). An open air transverse entry space (32) is set between the furnace surface partition plate (3) and the opposite side of the base gas distribution plate (2A). The air transverse entry space (32) is connected to the inner ring combustion supplement air hole (2A6), the middle ring combustion supplement air hole (2A7), and three gas injection ports (2A5). The three air outlet nozzles (12) are arranged in the air transverse entry space (32) between the base gas distribution plate (2A) and the furnace surface partition plate (3). Each gas injection port (2A5) includes a widened port recess (2A51) and a diameter reduction orifice (2A52). The diameter reduction orifice (2A52) contains an air intake channel (2A4). The diameter reduction orifice (2A52) is located in the middle of the inner bottom of the widened port recess (2A51). Three exhaust nozzles (12) are respectively inserted into the corresponding widened port recess (2A51) and aligned with the middle of the diameter reduction orifice (2A52). An air inlet circumferential gap (2A8) is provided between the exhaust nozzle (12) and the inner annular wall of the widened port recess (2A51). Thus, each gas injection port (2A5) independently injects gas, and there is no mixing of air and gas between adjacent ports. Each widened opening recess (2A51) includes at least a left enclosure (2A5A), a top enclosure (2A5B), and a right enclosure (2A5C), which are integrally connected to each other; the variable diameter reduction orifice (2A52) is an inner conical orifice that gradually decreases in size from the outside to the inside; Each reducing orifice (2A52) has a downward-facing flange (2A5D) extending from its bottom edge. The left wall (2A5A), the downward-facing flange (2A5D), and the right wall (2A5C) are connected together as an integral unit. The air intake base (1) includes at least one base top platform (1A) and three nozzle mounting hollow columns (1B). The base top platform (1A) and the three nozzle mounting hollow columns (1B) are arranged on the furnace surface partition plate (3). The three nozzle mounting hollow columns (1B) are vertically fixed on the top of the base top platform (1A). The inner sidewalls of the three nozzle mounting hollow columns (1B) are all horizontally fixed with air outlet nozzles (12). All the bottom edges of the left enclosure (2A5A), right enclosure (2A5C) and each reducing diameter orifice (2A52) are flatly pressed against the top of the inner half of the circumference of the base top platform (1A), forming an air and gas isolation wall (2A9), dividing the air entering the space (32) laterally into the air entering space area (321) required for gas injection and the air entering space area (322) required for combustion. The air entering space area (321) required for gas injection is located in the area of ​​the base top platform (1A). The central ring combustion supplement air hole (2A7) closest to the recessed part of the widened passage (2A51) is located directly above the top platform (1A) of the base; The central ring combustion supplement air hole (2A7) located directly above the top platform (1A) of the base is formed by two small air inlets (2A71) extending upwards and converging together, forming an inverted "Y" shape. The two small air inlets (2A71) are hollowed out in the base air distribution plate (2A) body between the three adjacent air intake channels (2A4). The central flame cap (2B) is integrally formed and includes a central top wall (2B1) and a central circumferential side wall (2B2). A central flame hole (2B3) is provided on the upper circumference of the central circumferential side wall (2B2). A central air hole (2B4) is provided in the middle of the central top wall (2B1). A central air supply pipe (2B5) extends downward from the inner hole of the central air hole (2B4). A central gas distribution groove (2B6) is formed between the central air supply pipe (2B5) and the circumferential side wall. The central air inlet (2A1) is formed by the central air inlet pipe (2A0) extending upward from the middle of the base air distribution plate (2A); The central air intake pipe (2A0) has a central air intake pipe (2AA) vertically fixed in the middle. The central air intake pipe (2AA) has a central air intake hole (2AB) inside. The central air intake hole (2AB) passes through the base air distribution plate (2A) and connects to the horizontal entry of air into the space (32). The central air intake hole (2A1) surrounds the central air intake pipe (2AA). The central circumferential sidewall (2B2) is inserted into the central air inlet (2A1) and sealed. The central air inlet (2A1), the central gas surrounding distribution groove (2B6), and the central flame hole (2B3) are connected. The central air supply pipe (2B5) is inserted into the central air inlet pipe (2AA) and sealed. The central air hole (2B4), the central air supply pipe (2B5), the central air inlet hole (2AB), and the air lateral entry space (32) are connected. The base air distribution plate (2A) includes an annular baffle plate (2A10) extending downward along its bottom edge ring. The reverse side of the annular baffle plate (2A10) is provided with an inner top recess (2A11), which covers and surrounds the upper section of the three nozzle mounting hollow column (1B) and the air outlet nozzle (12). The outer ring gas distribution groove (2A3) has a gas diversion eaves plate (2A32) extending laterally from the inner wall above the outer ring gas inlet (2A31). The gas diversion eaves plate (2A32) partially blocks the outer ring gas inlet (2A31). The outer ring gas distribution groove (2A3) is connected to the air intake channel (2A4) belonging to the outer ring air intake through the outer ring gas inlet (2A31). The inner edge of the bottom of the central ring gas distribution channel (2A2) is provided with an offset central ring gas inlet (2A21); the outer edge of the central ring combustion cap (2C) extends and protrudes a gas inlet top baffle (2C1). After the central ring combustion cap (2C) covers the central ring gas distribution channel (2A2), its gas inlet top baffle (2C1) seals and covers the top of the offset central ring gas inlet (2A21); the central ring gas distribution channel (2A2) is connected to the air intake channel (2A4) belonging to the central ring air intake through the offset central ring gas inlet (2A21).

2. The three-ring burner head of a household gas stove according to claim 1, characterized in that: The air intake base (1) extends rearward to form a gas distribution plate fixing bracket (1C), which is arranged below the furnace surface partition plate (3). The rear of the gas distribution plate fixing bracket (1C) extends upward to form a fixing leg (1D). The furnace surface partition plate (3) has a leg through hole (33), and the fixing leg (1D) extends upward from the leg through hole (33) onto the furnace surface partition plate (3). The top of the fixing leg (1D) is fixedly connected to the back of the base gas distribution plate (2A). The gas distribution plate fixing bracket (1C) is fixed with an ignition needle (1E) and a flame detection needle (1F) at the rear. The furnace surface partition plate (3) is provided with a needle and detection needle connection hole (34). The ignition needle (1E) and the flame detection needle (1F) pass through the corresponding needle and detection needle connection hole (34) and their top ends are close to the center burner cap (2B).

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