Combustor and gas cooker
By designing a structure that combines the nozzle seat with the blower power component in the burner, the blower air mixes with the gas before it is ejected, thus solving the problem of poor blower performance and improving combustion thermal efficiency.
Patent Information
- Application Number
- CN202423024031.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-09
AI Technical Summary
In existing gas burners, the blower effect is poor, resulting in insufficient mixing of air and gas, which affects thermal efficiency.
A burner was designed, including a burner cap, a mixing chamber, an ejector tube, and a nozzle seat. A blower power component is connected to the nozzle seat. The blower channel and the gas channel are merged. The blower mixes with the gas before it is ejected and is injected into the inner cavity of the ejector tube through the nozzle.
It improves the blowing effect, allowing air and fuel to mix more thoroughly, thus increasing the thermal efficiency of combustion.
Smart Images
Figure CN223579912U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of kitchen equipment, especially a burner and gas stove. BACKGROUND
[0002] In the existing gas burner, in order to improve the thermal efficiency of combustion, the air blower is increased to blow the ejection pipe, thereby improving the thermal efficiency, but the existing structure has the problem of poor air blowing effect. UTILITY MODEL CONTENTS
[0003] The first aspect, the utility model provides a kind of burner, can improve the effect of air blowing, improve the mixing sufficiency of air and gas.
[0004] In order to achieve the above purpose, the utility model discloses a kind of burner, including fire cover, gas mixing chamber, ejection pipe and base, the fire cover and gas mixing chamber form gas mixing chamber, the inner cavity of the ejection pipe and gas mixing chamber are communicated, the burner further includes nozzle seat, the nozzle seat is connected with air blowing power piece, the nozzle seat is connected with first nozzle, the nozzle seat is provided with air blowing channel and first gas channel, at least part of the first nozzle is located in nozzle seat, the first nozzle is provided with the gas inlet that is communicated with first gas channel;The air blowing channel is provided with air blowing outlet at the first nozzle, and the first nozzle is provided with the air inlet that is communicated with air blowing channel, the first nozzle is provided with the gas nozzle that the mixed gas of gas and air is ejected to the inner cavity of ejection pipe, the air outlet of air blowing power piece is communicated with the air blowing channel and air blowing channel is inhaled air.
[0005] Optionally, the nozzle seat includes at least two air blowing split parts that can be detachably connected, and at least part of the air blowing channel and / or first gas channel is formed between the two nozzle seat split parts;The first nozzle is connected to one of the nozzle seat split parts.
[0006] Optionally, the fire cover includes inner ring fire cover and outer ring fire cover, the gas mixing chamber includes inner ring chamber, middle ring chamber and outer ring chamber, the inner ring fire cover is provided with inner ring fire hole and middle ring fire hole, at least part of the inner ring fire cover constitutes at least part of the inner ring chamber and is communicated with the inner ring fire hole, and another at least part of the inner ring fire cover constitutes at least part of the middle ring chamber and is communicated with the middle ring fire hole, and at least part of the outer ring fire cover and gas mixing chamber forms outer ring chamber.
[0007] The first nozzle sprays the mixed gas of gas and air into the middle ring chamber.
[0008] Optionally, the gas mixing chamber is provided with an outer ring gas mixing sub-chamber, a middle ring gas mixing sub-chamber and an inner ring gas mixing sub-chamber, the inner ring gas mixing sub-chamber is arranged in the middle ring gas mixing sub-chamber, the inner ring fire hole and the middle ring fire hole are arranged in a top-bottom manner, at least a part of the inner ring gas mixing sub-chamber extends into the inner ring fire cover, and the inner cavity of the inner ring fire cover is divided into an inner ring upper cavity communicating with the inner ring fire hole and a middle ring upper cavity communicating with the middle ring fire hole.
[0009] Optionally, the gas mixing chamber is provided with a distributor below the gas mixing chamber, the ejector pipe includes an outer ring ejector pipe, a middle ring ejector pipe and an inner ring ejector pipe arranged in the distributor, and the distributor includes a distributor upper part and a distributor lower part arranged in a top-bottom manner.
[0010] Optionally, the distributor is provided with at least two middle ring ejector pipes, the distributor is provided with a middle ring distribution cavity in ring shape communicating with the inner cavities of the middle ring ejector pipes, the inner ring ejector pipe is arranged in the middle ring distribution cavity, and the middle ring distribution cavity and the inner cavity of the middle ring gas mixing sub-chamber are connected through a plurality of flow regulating holes.
[0011] Optionally, the gas mixing chamber includes a gas mixing main body part and a gas mixing cover plate arranged in a top-bottom manner, at least a part of the gas mixing main body part serves as at least a part of the outer ring gas mixing sub-chamber, the outer ring gas mixing sub-chamber is formed with an outer ring lower cavity, and the gas mixing cover plate is provided with a plurality of outer ring air inlets in a circumferential direction for communicating the outer ring lower cavity and the inner cavities of the outer ring ejector pipes.
[0012] Optionally, the distributor is provided with an outer ring distribution cavity, one end of the outer ring ejector pipe away from the inlet thereof communicates with one end of the outer ring distribution cavity, and the outer ring distribution cavity extends from the end communicating with the outer ring ejector pipe to the direction of the inlet of the outer ring ejector pipe.
[0013] Optionally, the fire cover, the gas mixing chamber and the ejector pipe form an upper half part of the burner, at least a part of the upper half part of the burner is arranged in the base and detachably connected with the base, and the nozzle seat is connected with the base.
[0014] In the second aspect, the utility model provides a gas stove which can improve the effect of air blowing.
[0015] In order to achieve the above object, the utility model discloses a gas stove which comprises the burner as described in the above technical solution.
[0016] Compared with the prior art, the utility model has the beneficial effects that at least a part of the first nozzle is arranged in the nozzle seat, air blowing can be carried out before the gas is sprayed, the effect of air blowing is improved, air and gas can be fully mixed, and the thermal efficiency of combustion is further improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1It is a structure schematic view of a burner disclosed by the utility model.
[0018] Figure 2 It is a vertical sectional view of a burner disclosed by the utility model.
[0019] Figure 3 It is an explosion structure schematic view mainly used for showing the inside of a base of a burner disclosed by the utility model.
[0020] Figure 4 It is an explosion structure schematic view of a burner disclosed by the utility model.
[0021] Figure 5 It is a sectional view mainly used for showing a nozzle seat of a burner disclosed by the utility model.
[0022] Figure 6 It is a horizontal sectional view mainly used for showing an ejector pipe of a burner disclosed by the utility model.
[0023] Mark 1, fire cover; 11, inner ring fire cover; 111, inner ring fire hole; 112, middle ring fire hole; 113, outer ring fire hole; 13, outer ring fire cover; 2, ejector pipe; 21, inner ring ejector pipe; 22, middle ring ejector pipe; 23, outer ring ejector pipe; 3, nozzle; 31, inner ring nozzle; 32, first nozzle; 321, gas inlet; 322, air inlet; 323, gas outlet; 33, outer ring nozzle; 4, nozzle seat; 41, air blowing power piece; 42, first gas channel; 430, air blowing split part; 4300, through hole; 431, mounting hole; 44, air blowing channel; 5, mixing chamber; 51, mixing main part; 52, mixing cover plate; 520, outer ring air inlet; 521, middle ring; 522, fire distribution ring; 511, inner ring chamber; 512, middle ring chamber; 5120, flow regulating hole; 513, outer ring chamber; 501, inner ring mixing sub-chamber; 502, middle ring mixing sub-chamber; 503, outer ring mixing sub-chamber; 6, distributor; 601, upper part of distributor; 602, lower part of distributor; 62, middle ring distribution cavity; 63, outer ring distribution cavity; 7, gas joint; 71, inner ring gas joint; 72, middle ring gas joint; 73, outer ring gas joint; 81, inner ring gas channel; 831, outer ring gas main channel; 832, outer ring gas sub-channel; 9, base. DETAILED DESCRIPTION
[0024] The application will be further described in detail below with reference to the drawings.
[0025] The application discloses a burner, referring to Figure 1 , comprising a fire cover 1, a mixing chamber 5, an ejector pipe 2, a base 9, a nozzle 3 and a gas joint 7, and the fire cover 1 and the mixing chamber 5 form a mixing chamber.
[0026] Referring to Figure 1 , Figure 2 In this embodiment, three air mixing chambers are provided, which are inner ring chamber 511, middle ring chamber 512 and outer ring chamber 513. Referring to Figure 3 and Figure 4 , three sets of injection pipes 2 are provided, which are inner ring injection pipe 21, middle ring injection pipe 22 and outer ring injection pipe 23. Three sets of nozzles 3 are also provided, which are inner ring nozzle 31, first nozzle 32 and outer ring nozzle 33. Three sets of gas connectors 7 are provided, which are inner ring gas connector 71, middle ring gas connector 72 and outer ring gas connector 73.
[0027] Referring to Figure 4 , the fire cap 1 includes inner ring fire cap 11 and outer ring fire cap 13. The inner ring fire cap 11 is provided with inner ring fire hole 111 and middle ring fire hole 112. The outer ring fire cap 13 is provided with outer ring fire hole 113.
[0028] Inner ring gas path: the gas enters the combustor through the inner ring gas connector 71, and enters the inner ring injection pipe 21 through the inner ring nozzle 31 to reach the inner ring chamber 511. The gas is sprayed out of the inner ring fire hole 111 for combustion.
[0029] Outer ring gas path: the gas enters the combustor through the outer ring gas connector 73, and enters the outer ring injection pipe 23 through the outer ring nozzle 33 to reach the outer ring chamber 513. The gas is sprayed out of the outer ring fire hole 113 for combustion.
[0030] Referring to Figure 4 and Figure 5 , in this embodiment, the combustor further includes a nozzle seat 4 connected to the base 9. The nozzle seat 4 is connected with a blast power member 41 and a first nozzle 32. The nozzle seat 4 is provided with a blast passage 44 and a first gas passage 42. At least part of the first nozzle 32 is located in the nozzle seat 4. The first nozzle 32 is provided with a gas inlet 321 which communicates with the first gas passage 42. The blast passage 44 is provided with a blast outlet at the first nozzle 32. The first nozzle 32 is provided with an air inlet 322 which communicates with the blast passage 44. The first nozzle 32 is provided with a gas nozzle 323 which sprays the mixed gas of gas and air into the inner cavity of the injection pipe 2. The blast power member 41 is connected to the nozzle seat 4, and the air outlet of the blast power member 41 communicates with the blast passage 44. The blast power member 41 blows air into the blast passage 44. The blast power member 41 is a blast fan.
[0031] The middle ring gas path: the middle ring gas joint 72 is connected to the nozzle seat 4 and makes the external gas enter into the first gas channel 42 through the middle ring gas joint 72, and the air blowing power 41 blows enough air into the air blowing channel 44, and the mixed air and gas are sprayed into the middle ring ejection pipe 22 through the first nozzle 32, and then reach the middle ring cavity 512, and are sprayed out from the middle ring fire hole 112 to burn.
[0032] In other embodiments, the air blowing power 41 on the nozzle seat 4 can be selected to blow air for the other two gas paths, or to blow air for any two gas paths at the same time, or to blow air for three gas paths at the same time.
[0033] In other embodiments, the nozzle seat 4 can be provided with three groups, and the air blowing power 41 in each group blows air into one of the gas paths, respectively. The nozzle seat 4 can also be provided with two groups, and the air blowing power 41 blows air into two of the gas paths, respectively.
[0034] Referring to Figure 4 and Figure 5 , the nozzle seat 4 includes at least two air blowing sub-parts 430 which are detachably connected, and the air blowing channel 44 and / or at least a part of the first gas channel 42 are formed between the two air blowing sub-parts 430; the first nozzle 32 is connected to one of the air blowing sub-parts 430.
[0035] Referring to Figure 3 , in the embodiment, the two air blowing sub-parts 430 are arranged in an upper and lower manner, two through holes 4300 are arranged on the upper air blowing sub-part 430, two mounting holes 431 are arranged on the lower air blowing sub-part 430, one first nozzle 32 is fixed in each mounting hole 431, the first gas channel 42 is formed in the lower air blowing sub-part 430 and includes a first gas main channel which is in communication with the inner cavity of the middle ring gas joint 72 and two first gas sub-channels which are in communication with the first gas main channel, each first gas sub-channel is in communication with the gas inlet 321 of one first nozzle 32, respectively, and the gas ejection port 323 of each first nozzle 32 sprays gas outwards through one through hole 4300, respectively.
[0036] The air blowing channel 44 is formed after the two air blowing sub-parts 430 are fixed and is provided with an air blowing outlet at the first nozzle 32, and the air blowing power 41 is fixed on the side or bottom of the lower air blowing sub-part 430.
[0037] The entire nozzle seat 4 is fixedly connected to the base 9, part of the nozzle seat 4 extends into the base 9, and the air blowing channel 44 is closer to the center of the base 9 than the first gas channel 42.
[0038] The first nozzle 32 is arranged in the nozzle seat 4, and the air blowing power 41 is also directly mounted on the nozzle seat 4, so that the stroke of the inhaled air entering the first nozzle 32 can be shortened, and the air blowing is located in front of the gas ejection, which improves the efficiency of the air blowing.
[0039] With reference to Figure 2 , at least a part of the inner ring fire cover 11 forms at least a part of the inner ring cavity 511 and communicates with the inner ring fire hole 111, and another at least a part of the inner ring fire cover 11 forms at least a part of the middle ring cavity 512 and communicates with the middle ring fire hole 112, and the outer ring fire cover 13 and at least a part of the gas mixing chamber 5 form the outer ring cavity 513.
[0040] The inner ring fire hole 111 and the middle ring fire hole 112 are arranged in the inner ring fire cover 11 in an up-down manner, the inner ring fire hole 111 is uniformly arranged along the outer side wall of the inner ring fire cover 11 in a circumferential direction, the cross section of the inner ring fire hole 111 is circular, and the inner ring fire hole 111 is close to the top of the inner ring fire cover 11.
[0041] The middle ring fire hole 112 is also arranged in a plurality of the outer side wall of the inner ring fire cover 11 in a circumferential direction of the inner ring fire cover 11, and each middle ring fire hole 112 extends in a long strip tooth shape along the central axis direction of the inner ring fire cover 11.
[0042] The outer ring fire cover 13 is arranged with a plurality of outer ring fire holes 113 in the circumferential direction of the outer peripheral wall thereof, and the outer ring fire hole 113 extends in a long strip tooth shape along the central axis direction of the outer ring fire cover 13.
[0043] With reference to Figure 2 and Figure 4 , the gas mixing chamber 5 is provided with an outer ring gas mixing sub-chamber 503, a middle ring gas mixing sub-chamber 502 and an inner ring gas mixing sub-chamber 501, and the inner ring gas mixing sub-chamber 501 is arranged in the middle ring gas mixing sub-chamber 502; at least a part of the inner ring gas mixing sub-chamber 501 extends into the inner ring fire cover 11 from the bottom of the inner ring fire cover 11, and divides the inner cavity of the inner ring fire cover 11 into an inner ring upper cavity communicating with the inner ring fire hole 111 and a middle ring upper cavity communicating with the middle ring fire hole 112.
[0044] The gas mixing chamber 5 includes a gas mixing body part 51 and a gas mixing cover plate 52 arranged in an up-down manner.
[0045] With reference to Figure 2 , at least a part of the gas mixing body part 51 serves as at least a part of the outer ring gas mixing sub-chamber 503, the outer ring gas mixing sub-chamber 503 is formed with an outer ring lower cavity, the outer ring fire cover 13 is formed with an outer ring upper cavity, and when the outer ring fire cover 13 is placed above the gas mixing body part 51 from top to bottom, the outer ring upper cavity and the outer ring lower cavity form an outer ring cavity 513.
[0046] With reference to Figure 4The air mixing cover plate 52 is provided with four outer ring air inlets 520 for communicating with the outer ring lower chamber in the circumferential direction.
[0047] The middle ring air mixing chamber 502 and the inner ring air mixing chamber 501 are arranged on the air mixing cover plate 52. The middle ring air mixing chamber 502 is composed of a middle ring 521 protruding from the upper surface of the air mixing cover plate 52 and having an upper opening and a split ring 522 arranged inside the middle ring 521 and having an upper opening.
[0048] The inner ring air mixing chamber 501 is a cylinder and is arranged inside the split ring 522. The upper and lower surfaces of the inner ring air mixing chamber 501 are penetrated.
[0049] The split ring 522 and the air mixing cover plate 52 are arranged separately. When the inner ring fire cover 11 is placed on the top of the split ring 522 from top to bottom, the split ring 522 forms part of the inner ring lower chamber and forms the inner ring chamber 511 together with the inner ring upper chamber in the inner ring fire cover 11. At the same time, the part of the inner ring fire cover 11 provided with the middle ring fire hole 112 is arranged outside the split ring 522, and the middle ring 521 forms the middle ring lower chamber and forms the middle ring chamber 512 together with the middle ring upper chamber of the inner ring fire cover 11.
[0050] The air mixing cover plate 52 is provided with a plurality of rectification holes 5120 for communicating the middle ring chamber 512 with the outside.
[0051] Referring to Figure 4 The lower part of the air mixing chamber 5 is provided with a distributor 6, which includes a distributor upper part 601 and a distributor lower part 602 arranged in a top-down manner. The distributor upper part 601 and the distributor lower part 602 are arranged separately, and in other embodiments, the distributor 6 can be integrally formed.
[0052] The distributor 6 is provided with at least two middle ring ejector pipes 22. The distributor 6 is provided with a middle ring distribution chamber 62 in ring shape for communicating with the inner cavity of each middle ring ejector pipe 22. The middle ring distribution chamber 62 is arranged above the middle ring ejector pipe 22, and the top of the middle ring distribution chamber 62 has an opening. The air mixing cover plate 52 is arranged above the middle ring distribution chamber 62, so that the middle ring distribution chamber 62 and the middle ring chamber 512 are connected through a plurality of rectification holes 5120.
[0053] The two middle ring ejector pipes 22 are arranged in parallel and have inlets arranged on the same side. The inner cavities of the two middle ring ejector pipes 22 are connected to the middle ring distribution chamber 62 at the end away from the inlet. The two middle ring ejector pipes 22 are arranged on opposite sides of the inner ring ejector pipe 21.
[0054] The inner ring ejector pipe 21 is arranged in the middle ring distribution chamber 62. The upper and lower end surfaces of the inner ring ejector pipe 21 are penetrated. When the air mixing cover plate 52 is placed on the upper surface of the distributor 6, the inner ring air mixing chamber 501 and the inner ring ejector pipe 21 are connected.
[0055] The distributor 6 is provided with one outer annular ejector pipe 23 on each side of one of the middle annular ejector pipes 22 away from the other middle annular ejector pipe 22. The two outer annular ejector pipes 23 are provided with inlets of the outer annular ejector pipes 23 at the ends away from the inlets of the middle annular ejector pipes 22.
[0056] The distributor 6 is provided with two outer annular distribution cavities 63 corresponding to the two outer annular ejector pipes 23 respectively, the ends of the outer annular distribution cavities 63 away from the inlets of the outer annular ejector pipes 23 are communicated with the ends of the outer annular distribution cavities 63, the outer annular distribution cavities 63 extend from the ends communicated with the outer annular ejector pipes 23 to the direction of the inlets of the outer annular ejector pipes 23, and the outer annular inlets 520 on the mixing cover plate 52 communicate the outer annular distribution cavities 63 with the outer annular cavities 513.
[0057] The upper part 601 and the lower part 602 of the distributor are separated at the middle positions of the middle annular ejector pipes 22 and the outer annular ejector pipes 23.
[0058] The fire cap 1, the mixing chamber 5, the distributor 6 and the ejector pipes 2 constitute an upper half part of the burner, at least part of the upper half part of the burner is located in the base 9 and detachably connected with the base 9, so as to facilitate cleaning.
[0059] With reference to Figure 3 , the base 9 is provided with the inner annular nozzle 31 in the middle of the bottom, and the outlet of the inner annular nozzle 31 is aligned with the inlet of the inner annular ejector pipe 21. The base 9 is provided with two outer annular nozzles 33 on the side away from the nozzle seat 4.
[0060] With reference to Figure 6 , the base 9 is provided with the outer annular gas joint 73 and the inner annular gas joint 71 on the side provided with the nozzle seat 4, in combination with Figure 4 , the base 9 is provided with the outer annular gas main passage 831 communicated with the outer annular gas joint 73 and the inner annular gas passage 81 communicated with the inner annular gas joint 71, and the base 9 is provided with the outer annular gas sub-passage 832 at each outer annular nozzle 33 and communicated with the outer annular gas main passage 831.
[0061] The embodiment of the application further discloses a gas stove comprising the burner as described in the above embodiment.
[0062] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.
Claims
1. A burner comprising a flame cap (1), a mixing chamber (5), an ejector tube (2), and a base (9), wherein the flame cap (1) and the mixing chamber (5) form a mixing cavity, the inner cavity of the ejector tube (2) is connected to the mixing cavity, and the burner further comprising a nozzle seat (4) on which a blower power component (41) is connected, characterized in that, The first nozzle (32) is connected to the nozzle seat (4), the nozzle seat (4) is provided with a blast passage (44) and a first gas passage (42), at least part of the first nozzle (32) is located in the nozzle seat (4), the first nozzle (32) is provided with a gas inlet (321) communicated with the first gas passage (42); the blast passage (44) is provided with a blast outlet at the first nozzle (32), the first nozzle (32) is provided with an air inlet (322) communicated with the blast passage (44), the first nozzle (32) is provided with a gas nozzle (323) for spraying the mixed gas of gas and air into the inner cavity of the injection pipe (2), the air outlet of the blast power element (41) is communicated with the blast passage (44) and blows air into the blast passage (44).
2. A burner as claimed in claim 1, characterised in that The nozzle seat (4) comprises at least two nozzle seat subparts (430) connected detachably, at least part of the blast passage (44) and / or the first gas passage (42) is formed between the two nozzle seat subparts (430); the first nozzle (32) is connected to one of the nozzle seat subparts (430).
3. A burner as claimed in claim 1, characterised in that The fire cover (1) comprises an inner ring fire cover (11) and an outer ring fire cover (13), the gas mixing chamber comprises an inner ring chamber (511), a middle ring chamber (512) and an outer ring chamber (513), the inner ring fire cover (11) is provided with an inner ring fire hole (111) and a middle ring fire hole (112), at least part of the inner ring fire cover (11) constitutes at least part of the inner ring chamber (511) and is communicated with the inner ring fire hole (111), another at least part of the inner ring fire cover (11) constitutes at least part of the middle ring chamber (512) and is communicated with the middle ring fire hole (112), the outer ring fire cover (13) and at least part of the gas mixing chamber (5) form the outer ring chamber (513). The first nozzle (32) sprays the mixed gas of gas and air into the middle ring chamber (512).
4. A burner as claimed in claim 3, characterised in that The gas mixing chamber (5) is provided with an outer ring gas mixing subchamber (503), a middle ring gas mixing subchamber (502) and an inner ring gas mixing subchamber (501), the inner ring gas mixing subchamber (501) is located in the middle ring gas mixing subchamber (502); the inner ring fire hole (111) and the middle ring fire hole (112) are arranged in an up-down manner, at least part of the inner ring gas mixing subchamber (501) extends into the inner ring fire cover (11) and divides the inner cavity of the inner ring fire cover (11) into an inner ring upper chamber communicated with the inner ring fire hole (111) and a middle ring upper chamber communicated with the middle ring fire hole (112).
5. A burner as claimed in claim 4, characterised in that A distributor (6) is arranged below the gas mixing chamber (5), the injection pipe (2) comprises an outer ring injection pipe (23), a middle ring injection pipe (22) and an inner ring injection pipe (21) arranged on the distributor (6), the distributor (6) comprises an upper distributor (6) and a lower distributor (6) arranged in an up-down manner.
6. A burner as claimed in claim 5, characterised in that The distributor (6) is provided with at least two middle ring ejector pipes (22), the distributor (6) is provided with a middle ring distribution cavity (62) in communication with the inner cavities of the middle ring ejector pipes (22) and in ring shape, the inner ring ejector pipes (21) are located in the middle ring distribution cavity (62), and the middle ring distribution cavity (62) is in communication with the inner cavities of the middle ring gas mixing sub-chambers (502) through a plurality of rectifier holes (5120).
7. A burner as claimed in claim 5, characterised in that The gas mixing chamber (5) comprises a gas mixing main body (51) and a gas mixing cover plate (52) arranged in an upper and lower manner, at least a part of the gas mixing main body (51) serves as at least a part of an outer ring gas mixing sub-chamber (503), the outer ring gas mixing sub-chamber (503) is formed with an outer ring lower cavity, and the gas mixing cover plate (52) is circumferentially provided with a plurality of outer ring gas inlets (520) for communicating the outer ring lower cavity and the inner cavities of the outer ring ejector pipes (23).
8. A burner as claimed in claim 7, characterised in that The distributor (6) is provided with an outer ring distribution cavity (63), one end of the outer ring ejector pipe (23) away from the inlet thereof is in communication with one end of the outer ring distribution cavity (63), and the outer ring distribution cavity (63) extends from the end in communication with the outer ring ejector pipe (23) to the direction of the inlet of the outer ring ejector pipe (23).
9. A burner as claimed in claim 5, characterised in that The fire cover (1), the gas mixing chamber (5) and the ejector pipe (2) constitute an upper half part of the burner, at least a part of the upper half part of the burner is located in the base (9) and is detachably connected with the base (9), and the nozzle seat (4) is connected to the base (9).
10. A gas hob, characterized in that The burner comprises the burner according to any one of claims 1-9. The burner comprises the burner according to any one of claims 1-9.