Burner and stove

Abstract

The present invention relates to the technical field of kitchen appliances, and in particular to a burner and a stove. The burner provided by the present invention comprises a burner head, an inner ring fire cover, an outer ring fire cover and a gas distributor; wherein an inner ring mixing chamber and an outer ring mixing chamber are formed in the burner head, a first gas channel and a second gas channel are formed between the inner ring fire cover and the gas distributor, and a third gas channel is formed between the outer ring fire cover and the gas distributor, and the flame sizes of the outer ring fire and the middle ring fire can be synchronously controlled through the outer ring mixing chamber; in addition, the gas entering the second gas channel and the third gas channel is first mixed in the outer ring mixing chamber and then diverted, so that the gas and air are mixed more evenly, the second gas channel is connected to the outer ring mixing chamber through a connecting channel, and the third gas channel is directly connected to the outer ring mixing chamber, so the outer ring mixing chamber is closer to the third gas channel, and the outer ring mixing chamber delivers more gas to the third gas channel; it meets the actual combustion requirements of the burner.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a burner and a stove. Background Art

[0002] At present, most of the stove burners on the market are atmospheric burners, among which many three-ring fire burners are used in household gas stoves. The three-ring fire uses the inner ring nozzle to supply the gas for the inner ring fire, the middle ring nozzle to supply the gas for the middle ring fire, and the outer ring nozzle to supply the gas for the outer ring fire. The three-ring fire design can make the burner's combustion flame more uniform, and the temperature distribution heated on the bottom of the pot is also more uniform. Because the middle ring fire is placed in the center area of ​​the burner, the output power of the inner ring fire can be reduced accordingly or designed to be a constant open flame state.

[0003] However, due to the use of three-way gas supply, the complex structure leads to high production costs, and the three-way gas supply has very high requirements on the synchronization of the valve body in regulating the gas flow. Due to production processing deviations, the synchronous changes of the flames of the outer ring fire and the middle ring fire cannot be achieved.

[0004] Therefore, in some burners, the gas distribution plate and the burner head jointly define a first gas distribution channel and a second gas distribution channel, wherein the first gas distribution channel is connected to the main ejector tube; the second gas distribution channel is connected to the auxiliary ejector tube, and the gas distribution plate structure is connected to multiple middle ring fire holes with the first gas distribution channel; the outer ring fire and the middle ring fire are supplied with gas by the outer ring ejector tube; the inner ring fire is supplied with gas by the inner ring ejector tube, which solves the problem of complex structure of three-way bus burners, but. Since the gas distribution plate is used to separate the airflow of the outer ring gas and the middle ring gas, the gas ratio cannot be effectively controlled, and the gas flow of the inner ring fire, the middle ring fire and the outer ring fire is separated by the structure of the burner head; the gas flow of the middle ring fire and the outer ring fire is separated by the gas distribution plate. The distance between the gas and the middle ring fire hole is short, and the distance to the outer ring fire hole is long, so more gas is allocated to the middle ring fire, but the actual required combustion ratio is opposite, which does not meet the actual combustion needs. Summary of the invention

[0005] (I) The technical problem to be solved by the present invention is that the existing burner uses a gas distribution plate to separate the airflow of the outer ring gas and the middle ring gas, and the gas ratio between the inner ring fire and the outer ring fire does not meet the actual needs of the burner.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, an embodiment of the present invention provides a burner including: a burner head, an inner ring fire cover, an outer ring fire cover and a gas distribution seat;

[0008] The gas distribution seat is arranged on the upper side of the burner head, the inner ring fire cover is arranged on the upper side of the gas distribution seat, and the outer ring fire cover is arranged on the upper side of the gas distribution seat and sleeved on the outer side of the inner ring fire cover;

[0009] The inner ring fire cover is provided with an inner ring fire outlet and a middle ring fire outlet, and the outer ring fire cover is provided with an outer ring fire outlet; a first gas channel and a second gas channel are formed between the inner ring fire cover and the gas distribution seat, and a third gas channel is formed between the outer ring fire cover and the gas distribution seat;

[0010] The first gas channel is in communication with the inner ring fire outlet, the second gas channel is in communication with the middle ring fire outlet, and the third gas channel is in communication with the outer ring fire outlet;

[0011] An inner ring mixing chamber and an outer ring mixing chamber are formed in the burner head, the inner ring mixing chamber is connected to the first gas channel, the outer ring mixing chamber is located at the lower side of the third gas channel, the air inlet of the third gas channel is directly connected to the air outlet of the outer ring mixing chamber, and the air inlet of the second gas channel is connected to the air outlet of the outer ring mixing chamber through a connecting channel.

[0012] According to one embodiment of the present invention, the inner ring fire outlet is an annular fire outlet groove provided on the inner ring fire cover.

[0013] According to one embodiment of the present invention, the inner ring fire cover includes a main body and a fire guide part, the main body is a cylindrical structure with one end open, the main body is provided with a top cover at the other end opposite to the open end, a through hole is provided in the middle of the top cover, the upper end of the fire guide part passes through the through hole, and the fire outlet groove is formed between the upper end of the fire guide part and the upper surface of the top cover; the middle ring fire outlet is a middle ring fire outlet hole provided on the top cover.

[0014] According to an embodiment of the present invention, a plurality of middle ring fire outlet holes are provided on the top cover, and the plurality of middle ring fire outlet holes are distributed in a ring shape on the top cover.

[0015] According to an embodiment of the present invention, the fire guide portion is a cylindrical structure, and a flange structure is formed at the top end of the fire guide portion, and the fire outlet groove is formed between the flange structure and the top cover.

[0016] According to one embodiment of the present invention, a gas separation ring is further provided in the inner ring fire cover, a first channel is formed between the gas separation ring and the outer wall of the fire guide portion, a second channel corresponding to the first channel is provided on the gas separation seat, and the first channel is connected with the second channel to form the first gas channel;

[0017] A third channel is formed between the gas isolation ring and the inner wall of the inner ring fire cover, a fourth channel corresponding to the third channel is provided in the gas separation seat, and the third channel is connected with the fourth channel to form the second gas channel.

[0018] According to one embodiment of the present invention, a thermocouple is provided on the outer side of the inner ring fire cover, a fire protection mechanism is provided on the inner ring fire cover at a position corresponding to the thermocouple, a fire protection groove connected to the first channel is formed on the air isolation ring, and the fire protection mechanism is connected to the fire protection groove.

[0019] According to one embodiment of the present invention, the fire protection mechanism includes a fire protection hole and a fire ignition groove, at least one fire protection hole is arranged around the fire ignition groove, and both the fire protection hole and the fire ignition groove pass through the inner ring fire cover and are connected to the fire protection groove.

[0020] According to one embodiment of the present invention, a connection plane matching with the fire protection groove is provided on the gas separation seat, and the gas isolation ring and the lower surface of the fire guide part are sealed and connected with the gas separation seat.

[0021] According to one embodiment of the present invention, the first channel includes a first section and a second section, the second section is cylindrical, the first section is conical, one end of the first section is connected to the fire outlet groove, the other end is connected to one end of the second section, and the other end of the second section is connected to the second channel; and the inner diameter of the first section gradually decreases from the second section to the first section.

[0022] According to one embodiment of the present invention, an air supply channel is formed in the fire guide part, an air supply inlet connected to the air supply channel is formed between the gas distribution seat and the upper surface of the burner head, and an air supply exhaust port connected to the air supply channel is formed at the upper end of the fire guide part.

[0023] According to an embodiment of the present invention, a connecting piece is provided on the upper surface of the burner head, the middle portion of the connecting piece is a hollow structure, and the connecting piece connects the outer ring mixing chamber and the third gas channel.

[0024] According to an embodiment of the present invention, a plurality of the connecting members are provided, and an air duct communicating with the air supplement inlet is formed between the plurality of the connecting members.

[0025] According to one embodiment of the present invention, the outer ring fire outlet is an outer ring fire outlet provided on the outer ring fire cover.

[0026] According to one embodiment of the present invention, a plurality of outer ring fire outlet holes are provided on the outer side wall of the outer ring fire cover.

[0027] According to one embodiment of the present invention, the burner is provided with an inner ring ejector tube and an outer ring ejector tube, the inner ring ejector tube is communicated with the inner ring mixing chamber, and the outer ring ejector tube is communicated with the outer ring mixing chamber.

[0028] Beneficial effects of the present invention: the burner stove head, inner ring fire cover, outer ring fire cover and gas distributor seat provided by the present invention; wherein an inner ring mixing chamber and an outer ring mixing chamber are formed in the stove head, a first gas channel and a second gas channel are formed between the inner ring fire cover and the gas distributor seat, and a third gas channel is formed between the outer ring fire cover and the gas distributor seat; the three-ring fire is controlled by two-way gas supply, and at the same time, the outer ring mixing chamber is connected with the second gas channel and the third gas channel respectively, the second gas channel is connected with the middle ring fire outlet, and the third gas channel is connected with the outer ring fire outlet, and the outer ring mixing chamber can be ... and the second gas channel is connected with the middle ring fire outlet, and the third gas channel is connected with the outer ring fire outlet, and the third gas channel is connected with the outer ring fire outlet. The gas supply of the outer ring fire and the middle ring fire is controlled step by step, and then the flame size of the outer ring fire and the middle ring fire is controlled; in addition, the gas entering the second gas channel and the third gas channel is first mixed in the outer ring mixing chamber and then diverted, so the mixture of gas and air is more uniform, the second gas channel is connected with the outer ring mixing chamber through the connecting channel, and the third gas channel is directly connected with the outer ring mixing chamber, so the outer ring mixing chamber is closer to the third gas channel, and the outer ring mixing chamber delivers more gas to the third gas channel; it meets the actual combustion needs of the burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A perspective view of a burner provided in accordance with an embodiment of the present invention;

[0031] Figure 2 An exploded view of a burner provided in accordance with an embodiment of the present invention;

[0032] Figure 3 A cross-sectional view of a burner provided in accordance with an embodiment of the present invention;

[0033] Figure 4 A three-dimensional diagram of a burner provided by one embodiment of the present invention;

[0034] Figure 5 A cross-sectional view of a burner provided in accordance with an embodiment of the present invention;

[0035] Figure 6 A cross-sectional view of the fire protection mechanism assembly provided for one embodiment of the present invention;

[0036] Figure 7 A three-dimensional diagram of an inner ring fire cover from one perspective provided by an embodiment of the present invention;

[0037] Figure 8A three-dimensional diagram of an inner ring fire cover from another perspective provided by an embodiment of the present invention;

[0038] Fig. 9 A three-dimensional diagram of a gas distributor provided by an embodiment of the present invention;

[0039] Fig.10 A top view of a burner provided for one embodiment of the present invention;

[0040] Fig.11 for Fig.10 AA section view.

[0041] icon:

[0042] 1-burner head; 11-inner ring ejector tube; 111-inner ring nozzle; 12-outer ring ejector tube; 121-outer ring nozzle; 13-inner ring mixing chamber; 14-outer ring mixing chamber; 15-connecting piece; 16-air supply inlet;

[0043] 2-gas distributor; 21-connection plane;

[0044] 3-inner ring fire cover; 31-body; 311-top cover; 32-ignition part; 321-flange; 322-air supply and exhaust port; 33-inner ring fire outlet; 34-fire protection hole; 35-ignition groove; 36-gas isolation ring; 361-fire protection groove; 37-middle ring fire outlet; 38-connecting channel;

[0045] 4-outer ring fire cover; 41-third gas channel; 42-outer ring fire outlet;

[0046] 5-first gas channel; 51-first channel; 511-first section; 512-second section; 52-second channel;

[0047] 6-second gas channel; 61-third channel; 62-fourth channel;

[0048] 7- Thermocouple. DETAILED DESCRIPTION

[0049] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0050] like Figures 1 to 11As shown, an embodiment of the present invention provides a burner, comprising: a burner head 1, an inner ring fire cover 3, an outer ring fire cover 4 and a gas dividing seat 2; the gas dividing seat 2 is arranged on the upper side of the burner head 1, the inner ring fire cover 3 is arranged on the upper side of the gas dividing seat 2, the outer ring fire cover 4 is arranged on the upper side of the gas dividing seat 2, and is sleeved on the outer side of the inner ring fire cover 3; the inner ring fire cover 3 is provided with an inner ring fire outlet 33 and a middle ring fire outlet 37, and the outer ring fire cover 4 is provided with an outer ring fire outlet 42; a first gas channel 5 and a second gas channel 6 are formed between the inner ring fire cover 3 and the gas dividing seat 2, and a third gas channel 6 is formed between the outer ring fire cover 4 and the gas dividing seat 2 Gas channel 41; the first gas channel 5 is connected to the inner ring fire outlet 33, the second gas channel 6 is connected to the middle ring fire outlet 37, and the third gas channel 41 is connected to the outer ring fire outlet 42; an inner ring mixing chamber 13 and an outer ring mixing chamber 14 are formed in the burner head 1, the inner ring mixing chamber 13 is connected to the first gas channel 5, and the outer ring mixing chamber 14 is located at the lower side of the third gas channel 41, the air inlet of the third gas channel 41 is directly connected to the air outlet of the outer ring mixing chamber 14, and the air inlet of the second gas channel 6 is connected to the air outlet of the outer ring mixing chamber 14 through the connecting channel 38.

[0051] The burner burner head 1, inner ring fire cover 3, outer ring fire cover 4 and gas distributor 2 are provided in the embodiment; wherein an inner ring mixing chamber 13 and an outer ring mixing chamber 14 are formed in the burner head 1, a first gas channel 5 and a second gas channel 6 are formed between the inner ring fire cover 3 and the gas distributor 2, and a third gas channel 41 is formed between the outer ring fire cover 4 and the gas distributor 2; the three-ring fire is controlled by two-way gas supply, and at the same time, the outer ring mixing chamber 14 is connected with the second gas channel 6 and the third gas channel 41 respectively, the second gas channel 6 is connected with the middle ring fire outlet 37, and the third gas channel 41 is connected with the outer ring fire outlet 42, and the gas supply of the outer ring fire and the middle ring fire can be synchronously controlled through the outer ring mixing chamber 14, thereby synchronously controlling the outer ring fire. The flame sizes of the ring fire and the middle ring fire; in addition, the gas entering the second gas channel 6 and the third gas channel 41 is first mixed in the outer ring mixing chamber 14 and then diverted, so the mixing of the gas and the air is more uniform, the second gas channel 6 is connected to the outer ring mixing chamber 14 through the connecting channel 38, and the third gas channel 41 is directly connected to the outer ring mixing chamber 14, so the outer ring mixing chamber 14 is closer to the third gas channel 41, and the distance from the gas to the third gas channel 41 is smaller than the distance from the gas to the second gas channel 6. Under the same pressure, the amount of gas entering the third gas channel 41 is more, and the outer ring gas ratio is higher than the middle ring gas ratio; it meets the actual combustion requirements of the burner.

[0052] According to one embodiment of the present invention, Figure 3 , Figure 7 and Figure 8As shown, the inner ring fire outlet 33 is an annular fire outlet groove provided on the inner ring fire cover 3; the flame of the inner ring fire is annular, and the combustion is more stable. In some technologies, a middle ring fire outlet hole is provided on the gas distribution plate. Since the temperature of the fire outlet hole is relatively high, the material properties of the gas distribution plate are required to be relatively high, and the temperature resistance is required to be above 700°C; resulting in an increase in the manufacturing cost of the gas distribution plate. In this embodiment, the inner ring fire outlet 33 and the middle ring fire outlet 37 are both provided on the inner ring fire cover 3, so the requirements for the manufacturing materials of the gas distribution plate are relatively reduced, which can reduce the manufacturing cost of the gas distribution plate.

[0053] like Figure 6 and Fig.11 As shown, the first channel 51 includes a first section 511 and a second section 512, the second section 512 is cylindrical, the first section 511 is conical, one end of the first section 511 is connected to the fire outlet groove, and the other end is connected to one end of the second section 512, and the inner diameter of the first section 511 gradually decreases from the second section 512 to the first section 511, that is, the first section 511 is a channel inclined toward the middle from bottom to top, and the inner ring fire is an outer flame groove type fire. When the pot is sitting on a pointed bottom, the burning direction of the flame is consistent with the arc surface of the bottom of the pot, and the flame burns along the arc surface of the bottom of the pot; the combustion is more stable, and the inner ring fire will not be back-pressed to the surface of the water receiving tray.

[0054] According to one embodiment of the present invention, Figure 7 and Figure 8 As shown, the inner ring fire cover 3 includes a body 31 and a fire guide part 32. The body 31 is a cylindrical structure with one end open. The other end of the body 31 relative to the open end is provided with a top cover 311. A through hole is provided in the middle of the top cover 311. The upper end of the fire guide part 32 passes through the through hole, and the fire outlet groove is formed between the upper end of the fire guide part 32 and the upper surface of the top cover 311; the middle ring fire outlet 37 is a middle ring fire outlet hole provided on the top cover 311. The fire outlet groove serves as the inner ring fire outlet 33, and the flame is more stable and easy to clean.

[0055] like Figure 7 and Figure 8 As shown, the fire guide part 32 is a cylindrical structure, and a flange 321 structure is formed at the top of the fire guide part 32, and the fire outlet groove is formed between the flange 321 structure and the top cover 311. That is, the fire outlet direction of the fire outlet groove is horizontal, and the inner ring fire is a ring flame ejected from the middle to the outside. The fire outlet groove is covered by the flange 321 of the fire guide part 32, which can reduce the entry of debris into the fire outlet groove, thereby avoiding the problem of clogging of the fire outlet groove, and the fire outlet groove is more convenient to clean than the fire outlet hole.

[0056] Optional, such as Figure 7 and Figure 8As shown, the top cover 311 is provided with a plurality of middle ring fire outlet holes, which are distributed in a ring shape on the top cover 311; the middle ring fire holes are arranged in a ring shape, which can meet the flame requirements of a pointed bottom pot placed on a burner.

[0057] like Figure 8 As shown, an air separation ring 36 is also provided in the inner ring fire cover 3, a third channel 61 is provided between the air separation ring 36 and the inner wall of the inner ring fire cover 3, a fourth channel 62 corresponding to the third channel 61 is provided in the gas separation seat 2, and the third channel 61 is connected with the fourth channel 62 to form the second gas channel 6; a first channel 51 is formed between the air separation ring 36 and the outer wall of the fire guide part 32, and a second channel 52 corresponding to the first channel 51 is provided on the gas separation seat 2, and the first channel 51 is connected with the second channel 52 to form the first gas channel 5.

[0058] In this embodiment, a third channel 61 is formed between the gas isolation ring 36 and the inner wall of the inner ring fire cover 3. The third channel 61 is connected with the fourth channel 62 located in the gas separation seat 2 to form a second gas channel 6. The second gas channel 6 is connected with the outer ring mixing chamber 14 through the connecting channel 38. The middle ring fire outlet hole is connected with the third channel 61, that is, the middle ring fire outlet hole is connected with the second gas channel 6. The mixed gas in the outer ring mixing chamber 14 enters the middle ring fire outlet hole through the fourth channel 62 and the third channel 61 to be ejected and burned to form a middle ring fire.

[0059] The first channel 51 is formed between the gas isolation ring 36 and the outer wall of the fire guide part 32, and a second channel 52 is provided in the gas separation seat 2. The first channel 51 is connected with the second channel 52 to form a first gas channel 5, and the first gas channel 5 is connected with the inner ring mixing chamber 13. The inner ring fire outlet 33 is connected with the first channel 51, that is, the inner ring fire outlet 33 is connected with the first gas channel 5, and the mixed gas in the inner ring mixing chamber 13 enters the inner ring fire outlet 33 through the second channel 52 and the first channel 51, is ejected and burned to form an inner ring fire.

[0060] According to one embodiment of the present invention, Figure 6 and Fig.11 As shown, a thermocouple 7 is provided on the outer side of the inner ring fire cover 3, a fire protection mechanism is provided on the inner ring fire cover 3 at a position corresponding to the thermocouple 7, a fire protection groove 361 is formed on the air isolation ring 36, the fire protection groove 361 is communicated with the first channel 51, and the fire protection groove 361 is communicated with the fire protection mechanism. The fire protection mechanism of the inner ring fire can be led out to the outer area of ​​the inner ring fire cover 3. The changes in the pot and the air pressure will not make the flame of the fire protection mechanism unstable, and the stability of the inner ring fire combustion is ensured by the fire protection mechanism.

[0061] Optionally, in this embodiment, the fire protection mechanism includes a fire protection hole 34 and a fire ignition groove 35, and at least one fire protection hole 34 is arranged around the fire ignition groove 35, and both the fire protection hole 34 and the fire ignition groove 35 pass through the inner ring fire cover 3 and are connected to the fire protection groove 361. Optionally, in this embodiment, two thermocouples 7 are provided on the outer side of the inner ring fire cover 3, and the two thermocouples 7 are correspondingly provided on the opposite sides of the inner ring fire cover 3. The corresponding inner ring fire cover 3 is also provided with two ignition grooves 35, and at least one fire keeping hole 34 is provided near each ignition groove 35. The fire keeping hole 34 and the ignition groove 35 pass through the inner ring fire cover 3, and the fire keeping hole 34 and the ignition groove 35 are both connected to the fire keeping groove 361, and the fire keeping groove 361 is connected to the first channel 51 in the first gas channel 5, that is, the fire keeping hole 34 and the ignition groove 35 are both connected to the first gas channel 5, and the mixed gas leading to the fire keeping hole 34 and the ignition groove 35 is the gas leading to the inner ring fire outlet 33. The flame-keeping hole 34 and the ignition groove 35 at the thermocouple 7 are completely penetrated, so that the flame can be more stable, there will be no flame separation problem, and the flame transmission is better; the design of the flame-keeping hole 34 and the ignition groove 35 makes the flame transmission speed faster when the small fire is turned into a large fire.

[0062] According to one embodiment of the present invention, Fig. 9 As shown, the gas separation seat 2 is provided with a connection plane 21 that matches the fire protection groove 361, and the gas isolation ring 36 and the lower surface of the fire guide part 32 are sealed and connected to the gas separation seat 2. Among them, the upper end surfaces of the second channel 52 and the fourth channel 62 in the gas separation seat 2 are located on the same plane, and the lower end surfaces of the fire guide part 32 and the gas isolation ring 36 are located on the same plane, so that the matching accuracy is higher when the first channel 51 is connected and matched with the second channel 52, and the third channel 61 is connected and matched with the fourth channel 62, and the problem of gas leakage is avoided.

[0063] According to one embodiment of the present invention, Figure 6 and Fig.11 As shown, an air supply channel is formed in the fire guide part 32, an air supply inlet 16 communicating with the air supply channel is formed between the gas distribution seat 2 and the upper surface of the burner head 1, and an air supply exhaust port 322 communicating with the air supply channel is formed at the upper end of the fire guide part 32. Air is supplied to the inner ring fire cover 3 through the air supply channel. Specifically, in this embodiment, air can be supplied to the inner ring fire outlet 33 and the middle ring fire outlet 37 through the air supply channel, thereby increasing the oxygen content near the inner ring fire outlet 33 and the middle ring fire outlet 37, and ensuring that the inner ring fire and the outer ring fire are fully burned.

[0064] like Figure 4As shown, a connecting piece 15 is provided on the upper surface of the burner head 1, and the middle part of the connecting piece 15 is a hollow structure, and the connecting piece 15 connects the outer ring mixing chamber 14 and the third gas channel 41. The outer ring fire cover 4 is provided with a connecting port that matches the connecting piece 15 one by one, and the outer ring air mixture inside the burner head 1 enters the third gas channel 41 in the outer ring fire cover 4 through the connecting piece 15, and then passes through the third gas channel 41 and the outer ring fire outlet 42 to be ejected and burned to form an outer ring fire. In this embodiment, the outer ring fire outlet 42 is an outer ring fire outlet 42 arranged on the outer ring fire cover 4. A plurality of outer ring fire holes are provided on the outer side wall of the outer ring fire cover 4, and the plurality of outer ring fire holes are arranged in a ring shape on the outer wall of the outer ring fire cover 4. As shown Figure 4 As shown, there are multiple connecting parts 15, and an air duct connected to the air supply inlet 16 is formed between the multiple connecting parts 15. The air outside the burner enters the air supply inlet 16 through the air duct and then enters the air supply channel, and is then discharged through the air supply exhaust port 322 located on the upper side of the inner ring fire cover 3, so as to supplement oxygen for the inner ring fire outlet 33 and the outer ring fire outlet 42.

[0065] According to one embodiment of the present invention, Figures 1 to 3 and Fig.10 As shown, the burner is provided with an inner ring ejector tube 11 and an outer ring ejector tube 12, the inner ring ejector tube 11 is connected to the inner ring mixing chamber 13, and the outer ring ejector tube 12 is connected to the outer ring mixing chamber 14; the inner ring ejector tube 11 is provided with an inner ring nozzle 111, and the outer ring ejector tube 12 is provided with an outer ring nozzle 121. The inner ring fire and the middle ring fire on the inner ring fire cover 3 are respectively controlled by different gas passages, so that the maximum fire power of the inner ring fire can be reduced accordingly without affecting the thermal efficiency and the heating uniformity of the bottom of the pot. It meets the daily low-fire requirements for stewing soup, boiling soup, cooking porridge and heating milk. It solves the problem of soup overflowing the pot and heating food burning. It achieves the minimum fire power reaching the extreme low-fire power of 100-350W.

[0066] The working principle of the burner provided by the present invention is explained below with reference to the accompanying drawings.

[0067] First, the gas enters the inner ring injector tube 11 through the inner ring nozzle 111, and then enters the inner ring mixing chamber 13 through the inner ring injector tube 11. The mixed gas in the inner ring mixing chamber 13 enters the first gas channel 5. The inner ring fire cover 3 is provided with an inner ring fire outlet 33. The gas is ejected and burned through the inner ring fire outlet 33 to form an inner ring fire. At the same time, the fire protection holes 34 and the ignition grooves 35 on the inner ring fire cover 3 can ensure the stability of the inner ring fire combustion in a low-fire combustion environment.

[0068] At the same time, the gas enters the outer ring injector tube 12 through the outer ring nozzle 121, and the gas enters the outer ring mixing chamber 14 through the outer ring injector tube 12. The gas and air are fully mixed in the outer ring mixing chamber 14 and then diverted. A part of the gas enters the third gas channel 41 inside the outer ring fire cover 4, and is ejected through the outer ring fire outlet 42 to burn to form an outer ring fire, and the other part of the gas enters the second gas channel 6 through the connecting channel 38, and then is ejected through the second gas channel 6 through the middle ring fire outlet 37 to burn to form a middle ring fire.

[0069] The present invention further provides a cooker, comprising the burner described in any of the above embodiments, the specific effects of which are the same as the beneficial effects of the burner, and will not be repeated here.

[0070] In the description of the present invention, it should be noted that the terms "upper", "lower", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0071] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the inside of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A burner, characterized in that: include: A burner head (1), an inner ring fire cover (3), an outer ring fire cover (4) and a gas distribution seat (2); The gas distribution seat (2) is arranged on the upper side of the burner head (1), the inner ring fire cover (3) is arranged on the upper side of the gas distribution seat (2), and the outer ring fire cover (4) is arranged on the upper side of the gas distribution seat (2) and is sleeved on the outer side of the inner ring fire cover (3); The inner ring fire cover (3) is provided with an inner ring fire outlet (33) and a middle ring fire outlet (37), and the outer ring fire cover (4) is provided with an outer ring fire outlet (42); a first gas channel (5) and a second gas channel (6) are formed between the inner ring fire cover (3) and the gas distribution seat (2), and a third gas channel (41) is formed between the outer ring fire cover (4) and the gas distribution seat (2); The first gas channel (5) is in communication with the inner ring fire outlet (33), the second gas channel (6) is in communication with the middle ring fire outlet (37), and the third gas channel (41) is in communication with the outer ring fire outlet (42); An inner ring mixing chamber (13) and an outer ring mixing chamber (14) are formed in the burner head (1); the inner ring mixing chamber (13) is in communication with the first gas channel (5); the outer ring mixing chamber (14) is located at the lower side of the third gas channel (41); the air inlet of the third gas channel (41) is directly in communication with the air outlet of the outer ring mixing chamber (14); and the air inlet of the second gas channel (6) is in communication with the air outlet of the outer ring mixing chamber (14) via a connecting channel (38); The inner ring fire cover (3) comprises a body (31) and a fire guide portion (32); the body (31) is a cylindrical structure with one end open; the other end of the body (31) opposite to the open end is provided with a top cover (311); The middle ring fire outlet (37) is a middle ring fire outlet hole provided on the top cover (311); a plurality of middle ring fire outlet holes are provided on the top cover (311), and the plurality of middle ring fire outlet holes are distributed in a ring shape on the top cover (311); An air separation ring (36) is also provided inside the inner ring fire cover (3), and a first channel (51) is formed between the air separation ring (36) and the outer wall of the fire guide portion (32).

2. The burner according to claim 1, characterized in that The inner ring fire outlet (33) is an annular fire outlet groove provided on the inner ring fire cover (3).

3. The burner according to claim 2, characterized in that: A through hole is provided in the middle of the top cover (311), the upper end of the fire guide portion (32) passes through the through hole, and the fire outlet groove is formed between the upper end of the fire guide portion (32) and the upper surface of the top cover (311).

4. The burner according to claim 3, characterized in that The fire guide portion (32) is a cylindrical structure, and a flange (321) structure is formed at the top end of the fire guide portion (32), and the fire outlet groove is formed between the flange (321) structure and the top cover (311).

5. The burner according to claim 3, characterized in that The gas distribution seat (2) is provided with a second channel (52) corresponding to the first channel (51), and the first channel (51) is connected to the second channel (52) to form the first gas channel (5); A third channel (61) is formed between the gas separation ring (36) and the inner wall of the inner ring fire cover (3); a fourth channel (62) corresponding to the third channel (61) is provided in the gas separation seat (2); the third channel (61) is connected to the fourth channel (62) to form the second gas channel (6).

6. The burner according to claim 5, characterized in that A thermocouple (7) is provided on the outer side of the inner ring fire cover (3); a fire protection mechanism is provided on the inner ring fire cover (3) at a position corresponding to the thermocouple (7); a fire protection groove (361) communicating with the first channel (51) is formed on the air isolation ring (36); and the fire protection mechanism is in communication with the fire protection groove (361).

7. The burner according to claim 6, characterized in that The fire protection mechanism comprises a fire protection hole (34) and a fire starting groove (35), at least one fire protection hole (34) is arranged around the fire starting groove (35), and both the fire protection hole (34) and the fire starting groove (35) penetrate the inner ring fire cover (3) and are in communication with the fire protection groove (361).

8. The burner according to claim 6, characterized in that The gas separation seat (2) is provided with a connection plane (21) that cooperates with the fire protection groove (361), and the gas separation ring (36) and the lower surface of the fire guide part (32) are sealed and connected to the gas separation seat (2).

9. The burner according to claim 5, characterized in that The first channel (51) comprises a first section (511) and a second section (512); the second section (512) is cylindrical, the first section (511) is conical, one end of the first section (511) is connected to the fire outlet groove, and the other end is connected to one end of the second section (512); the other end of the second section (512) is connected to the second channel (52); and the inner diameter of the first section (511) gradually decreases in the direction from the second section (512) to the first section (511).

10. The burner according to any one of claims 3 to 9, characterized in that: An air supply channel is formed in the fire guide portion (32), an air supply inlet (16) communicating with the air supply channel is formed between the air distribution seat (2) and the upper surface of the burner head (1), and an air supply exhaust port (322) communicating with the air supply channel is formed at the upper end of the fire guide portion (32).

11. The burner according to claim 10, characterized in that A connecting piece (15) is provided on the upper surface of the burner head (1), the middle portion of the connecting piece (15) is a hollow structure, and the connecting piece (15) is connected to the outer ring mixing chamber (14) and the third gas channel (41).

12. The burner according to claim 11, characterized in that A plurality of the connecting members (15) are provided, and an air duct communicating with the air supply inlet (16) is formed between the plurality of the connecting members (15).

13. The burner according to any one of claims 3 to 9, characterized in that: The outer ring fire outlet (42) is an outer ring fire outlet hole provided on the outer ring fire cover (4).

14. The burner according to claim 13, characterized in that A plurality of outer ring fire outlet holes are provided on the outer side wall of the outer ring fire cover (4).

15. The burner according to any one of claims 3 to 9, characterized in that The burner is provided with an inner ring ejector tube (11) and an outer ring ejector tube (12); the inner ring ejector tube (11) is in communication with the inner ring mixing chamber (13), and the outer ring ejector tube (12) is in communication with the outer ring mixing chamber (14).

16. A cooking appliance, characterized in that: Comprising a burner as claimed in any one of claims 1 to 15.

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