CN218883962U - Combustor and cooking utensils - Google Patents

Abstract

The utility model relates to a gas device technical field discloses a combustor and cooking utensils. The combustor includes the nozzle holder and prevents the dry combustion method subassembly, and the center of nozzle holder forms the through hole that extends along upper and lower direction, prevents the dry combustion method subassembly and includes temperature sensor, bracing piece and clamp, and the bracing piece is connected in temperature sensor's lower extreme, and temperature sensor and bracing piece all set up in the through hole, and the clamp is formed with the mounting hole, and during the lower extreme of bracing piece inserted the mounting hole, the clamp can be dismantled with the nozzle holder and be connected. The utility model discloses a combustor prevents the simple structure and the easy dismounting of dry combustion method subassembly, has improved the assembly efficiency of combustor and later maintenance's convenience. The utility model discloses a cooking utensils, through setting up foretell combustor, simple structure, be convenient for maintain.

Description

Combustor and cooking utensils

Technical Field

The utility model relates to a gas device technical field especially relates to a combustor and cooking utensils.

Background

The problem of dry combustion method appears in order to prevent the pan in current lower air inlet combustor, prevents the dry combustion method subassembly in the central zone installation of nozzle holder, prevents that the dry combustion method subassembly includes temperature detection spare, and its theory of operation is: the butt of temperature detection piece and the pan of placing on the combustor to detect the temperature of pan bottom, thereby judge whether the condition of dry combustion method appears in the pan. However, in the prior art, the structure of the dry burning preventing component is complex, and the disassembly and the assembly are inconvenient.

Therefore, a burner and a cooking stove are needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a combustor, prevent the simple structure and the easy dismounting of dry combustion method subassembly.

Another object of the utility model is to provide a cooking utensils, through setting up foretell combustor, simple structure, be convenient for maintain.

To achieve the purpose, the utility model adopts the following technical proposal:

a burner comprising a nozzle holder and an anti-dry burning assembly, wherein a through hole extending in an up-and-down direction is formed at the center of the nozzle holder, and the anti-dry burning assembly comprises:

the temperature sensor and the support rod are arranged in the through hole, and the support rod is connected to the lower end of the temperature sensor;

the clamp is formed with the mounting hole, insert the lower extreme of bracing piece in the mounting hole, the clamp with the nozzle holder can be dismantled and be connected.

As an alternative, a groove is formed in a side wall of the through hole, and the clamp is clamped in the groove.

As an optional scheme, the clamp comprises two clasping arms formed by bending a metal plate, each clasping arm is provided with a half groove, and the two half grooves are encircled to form the mounting hole;

be provided with the breach on the global of recess, the breach includes two relative first side walls that set up, two first side wall corresponds extrudees two the arm of holding tightly is close to mutually in order to press from both sides tightly the bracing piece.

As an alternative, at least one of the clasping arms is provided with an ear, and the ear is connected with the nozzle holder through a fastener.

As an alternative, the clasping arm includes a body portion and an extension portion, the extension portion has a length greater than that of the body portion in the axial direction of the through hole, and the half groove is provided on the extension portion.

As an alternative, the support rod is arranged coaxially with the mounting hole.

As an optional scheme, the combustor still includes distributor, inner ring fire lid and outer loop fire lid, the distributor with the nozzle holder cooperatees, the outer loop fire lid is installed on the distributor, the inner ring fire lid set up the inner circle of outer loop fire lid and with the nozzle holder cooperatees.

As an alternative, the nozzle holder comprises a nozzle holder main body and a mounting assembly, a contact surface is arranged between the nozzle holder main body and the mounting assembly, the mounting assembly is mounted on the nozzle holder main body, and the distributor and the inner ring fire cover are connected with the mounting assembly.

As an optional scheme, the mounting assembly includes a plurality of inner circular tubes, a middle circular tube and an outer circular tube which are sequentially sleeved from inside to outside, a central gas flow passage is formed between the inner circular tube and the middle circular tube, an outer circular gas flow passage is formed between the middle circular tube and the outer circular tube, an arc-shaped outer circular mixing cavity and an arc-shaped inner circular mixing cavity are formed on the nozzle seat, an outer circular injection tube and an inner circular injection tube are further formed on the nozzle seat, the outer circular injection tube is sequentially communicated with the distributor through the outer circular mixing cavity and the outer circular gas flow passage, and the inner circular injection tube is sequentially communicated with the inner circular fire cover through the inner circular mixing cavity and the central gas flow passage.

A cooking appliance comprises the burner.

The utility model discloses beneficial effect does:

the utility model discloses a combustor can realize the fixed to temperature sensor through clamp and bracing piece, and the clamp can be dismantled with the nozzle holder and be connected the installation that makes whole prevent dry combustion method subassembly and nozzle holder and dismantle conveniently, prevents the overall structure of dry combustion method subassembly simple, easy dismounting to can improve the assembly efficiency of combustor, be convenient for also prevent dry combustion method subassembly and carry out later maintenance.

The utility model discloses a cooking utensils, through setting up foretell combustor, simple to operate just prevents that the dry combustion method subassembly is convenient for maintain.

Drawings

FIG. 1 is a schematic structural view of a burner according to an embodiment of the present invention;

FIG. 2 is a schematic view of a burner according to an embodiment of the present invention in an exploded state;

FIG. 3 is a longitudinal cross-sectional view of a burner according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a nozzle holder according to an embodiment of the present invention;

FIG. 5 is an exploded view of a nozzle holder according to an embodiment of the present invention;

fig. 6 is a schematic view of a first inner ring pipe and an anti-dry heating assembly according to an embodiment of the present invention;

FIG. 7 is a schematic view of a second inner collar and an anti-dry heating assembly according to an embodiment of the present invention;

FIG. 8 is a schematic view of a third inner collar and a dry-burning prevention assembly according to an embodiment of the present invention;

FIG. 9 is a schematic view of a fourth inner collar and an anti-dry heating assembly according to an embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view of a first nozzle holder according to an embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view of a second nozzle holder according to an embodiment of the present invention;

FIG. 12 is an enlarged view taken at A in FIG. 10;

fig. 13 is a sectional view of a partial structure of a burner according to an embodiment of the present invention;

FIG. 14 is a schematic structural view of a nozzle holder body according to an embodiment of the present invention;

FIG. 15 is a cross-sectional view of a nozzle carrier body according to an embodiment of the present invention;

fig. 16 is an enlarged view at B in fig. 13;

fig. 17 is a schematic structural view of a burner body and a clip according to an embodiment of the present invention;

fig. 18 is a schematic structural view of a clip according to an embodiment of the present invention.

In the figure:

1. a nozzle holder; 11. a nozzle holder body; 111. an outer ring mixing chamber; 112. an inner ring mixing chamber; 113. an outer ring injection pipe; 114. an inner ring injection pipe; 12. mounting the component; 121. an inner ring pipe; 1211. a protrusion; 1212. a tube body; 1213. an end plate; 122. a middle ring pipe; 1221. a bending section; 123. an outer ring pipe; 124. a central gas flow passage; 125. an outer ring gas flow passage; 13. a heat insulating pad; 14. a through hole; 15. a groove; 16. a notch; 17. a first side wall; 18. a transition passage;

2. a fire divider; 3. an outer ring fire cover; 4. an inner ring fire cover;

5. an anti-dry heating component; 51. a temperature sensor; 52. a support bar; 53. clamping a hoop; 531. a clasping arm; 5311. a body portion; 5312. an extension portion; 532. a half groove; 533. mounting holes; 534. ear parts.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures associated with the present invention are shown in the drawings, not all of them.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

The embodiment provides a burner and a kitchen range, wherein the kitchen range comprises the burner, the specific kitchen range can be a gas stove, an integrated kitchen range and the like, the number of the burners in the kitchen range can be one, two or more, and the burners are not specifically limited herein.

As shown in fig. 1 and 2, the burner includes a nozzle (not shown), a nozzle holder 1, a distributor 2, an outer ring fire cover 3, an inner ring fire cover 4, and a dry combustion preventing assembly 5. Wherein, the nozzle is installed on nozzle holder 1, and the nozzle is used for communicating with the gas pipeline, and the nozzle can accelerate the gas and spray the gas to nozzle holder 1 in. The distributor 2 is annular, and the distributor 2 is arranged on the upper side of the nozzle holder 1 and communicated with the inner channel of the nozzle holder 1. The outer ring fire cover 3 is ring-shaped, and the outer ring fire cover 3 is covered on the distributor 2. The inner ring fire cover 4 is also annular, and the inner ring fire cover 4 is matched with the nozzle holder 1 and communicated with the inner channel of the nozzle holder 1. A part of the gas in the nozzle holder 1 enters the distributor 2, and the distributor 2 enables the gas to uniformly enter the outer ring fire cover 3 along the circumferential direction and burn in the outer ring fire cover 3. Another part of the gas in the nozzle holder 1 enters the inner ring fire cover 4 and burns in the inner ring fire cover 4. Prevent dry combustion method subassembly 5 from bottom to top and wear to establish nozzle holder 1 to expose from the top of combustor, prevent dry combustion method subassembly 5 and can with the bottom butt of the pan of placing on the combustor, thereby detect the temperature of pan, and then judge whether the condition of dry combustion method appears in the pan according to the temperature that detects.

The channel is arranged in the nozzle seat 1, so the shape is complex, the aluminum material is generally adopted for pouring and forming in the prior art, the distributor 2 and the inner ring fire cover 4 are generally made of copper or copper alloy materials, when the burner works, the deformation of the nozzle seat 1 made of the aluminum material is greater than the deformation of the distributor 2 and the inner ring fire cover 4, so that larger gaps are generated between the distributor 2 and the nozzle seat 1 and between the inner ring fire cover 4 and the nozzle seat 1, the central area of the burner is overhigh in temperature, and the normal work of the anti-dry burning component 5 positioned in the central area of the burner is influenced; and the gap is large, and the problem of fire leakage can also occur, thereby causing potential safety hazards.

To this end, preferably, as shown in fig. 3 and 4, the nozzle holder 1 includes a fixedly connected nozzle holder main body 11 and a mounting assembly 12, and the nozzle is connected to the nozzle holder main body 11. The distributor 2 is matched with the mounting component 12, the inner ring fire cover 4 is matched with the mounting component 12, and the difference of the thermal expansion coefficients of the mounting component 12 and the distributor 2 is not more than 3 multiplied by 10 ^-6 at/deg.C, the difference in thermal expansion coefficient between the mounting assembly 12 and the inner ring fire cap 4 is no greater than 3 x 10 ^-6 V. C. Through selecting the material of installation component 12, can be with installation component 12 respectively with distributor 2, the thermal expansion coefficient difference control of inner ring fire lid 4 is in above-mentioned less within range, the event can effectively prevent under the high temperature condition that nozzle holder 1 produces the clearance because of the inflation volume difference respectively with between distributor 2 and the inner ring fire lid 4, and then guarantee distributor 2 and inner ring fire lid 4 and closely cooperate with the fitting surface of nozzle holder 1 respectively, thereby can avoid nozzle holder 1 central zone to be overheated, prevent to be located nozzle holder 1 central zone prevent dry combustion method subassembly 5 because of the overheated influence testing result of ambient temperature, and can avoid the combustor to appear leaking the problem of fire reliably.

Under the general condition, inner ring fire lid 4 and distributor 2 are can directly follow nozzle holder 1 and take off, and current nozzle holder 1 adopts aluminium material casting to lead to nozzle holder 1's wear resistance poor, and nozzle holder 1 can produce wearing and tearing when using for a long time, and then not inseparable with inner ring fire lid 4 and distributor 2's cooperation, the problem of leaking the fire appears. In this embodiment, the wear resistance of the mounting assembly 12 is higher than that of the nozzle holder body 11, that is, the wear resistance of the nozzle holder 1 used for the part matching with the inner ring fire cover 4 and the distributor 2 is improved, so that the problem of fire leakage caused by the wear of the matching position during long-term use is avoided.

In this embodiment, distributor 2, inner ring fire lid 4 and installation component 12 all adopt the copper alloy material to make installation component 12, distributor 2 and inner ring fire lid 4 inflation volume when being heated are close, and then guarantee that the fitting surface that corresponds is still closely cooperated after being heated. In addition, the wear resistance of the copper alloy material is obviously better than that of the cast aluminum material, so that the installation component 12 made of the copper alloy material can effectively solve the problem of fire leakage caused by the abrasion of the nozzle holder 1. It is understood that in other embodiments, the material of the mounting component 12 is not limited to copper alloy material, as long as the expansion coefficient is ensured to satisfy the above range and the wear resistance is better. Alternatively, in this embodiment, the nozzle holder body 11 may still be formed by casting an aluminum material, which is convenient for forming and low in cost, as long as the inner ring fire cover 4 and the mounting assembly 12 are fixedly connected, and no gap is generated between the two due to the difference of thermal expansion coefficients.

When the combustor burns, the temperature of outer ring fire lid 3 department and inner ring fire lid 4 department is higher, and high temperature can be along radially transmitting inside installation component 12 from outside-in, and then distribute around preventing dry combustion method subassembly 5, if prevent dry combustion method subassembly 5 ambient temperature reach certain degree can influence its accuracy to bottom of a boiler temperature detection, and then influence the accuracy of the judgement whether dry combustion method appears to the pan.

Preferably, as shown in fig. 3-5, the mounting assembly 12 includes a plurality of circular pipes sequentially sleeved from inside to outside, wherein the circular pipe at the innermost layer is an inner circular pipe 121, and the anti-dry heating assembly 5 is disposed inside the inner circular pipe 121. The ring pipe that the multilayer cover was established can effectively block outside high temperature inwards transmit prevent dry combustion method subassembly 5 on, improved the accuracy and the reliability of preventing dry combustion method subassembly 5 detection.

In this embodiment, as shown in fig. 3, the mounting assembly 12 includes three ring pipes, which are an inner ring pipe 121, a middle ring pipe 122 and an outer ring pipe 123 from inside to outside, and the inner ring pipe 121, the middle ring pipe 122 and the outer ring pipe 123 are respectively and fixedly connected to the nozzle holder body 11. The distributor 2 is supported on the upper ends of the outer collar 123 and the middle collar 122, and the inner flame cover 4 is supported on the inner collar 121 and the distributor 2. Preferably, the lower extreme of distributor 2 respectively with outer ring pipe 123 upper end, well ring pipe 122 between the unsmooth cooperation, unsmooth complex structure both guaranteed to reliably support distributor 2, and guaranteed that distributor 2 and installation component 12 have enough big fitting surface to improve the leakproofness of cooperation position, avoid appearing leaking the problem of fire. Similarly, the inner ring fire cover 4 and the inner ring pipe 121, the distributor 2 between also form unsmooth cooperation structure to guarantee to the reliable support of inner ring fire cover 4, and guarantee that the inner ring fire cover 4 respectively with the inner ring pipe 121, the good leakproofness of the cooperation position of distributor 2, avoid appearing leaking the problem of fire.

In this embodiment, as shown in fig. 3, the nozzle holder body 11 and the inner collar 121 together form a through hole 14 penetrating the nozzle holder 1 in the up-down direction, so that the dry-burning preventing assembly 5 is installed in the through hole 14 from the bottom to the top and finally protrudes from the upper end of the nozzle holder 1 to contact with the bottom of the pot.

Preferably, as shown in fig. 3, the lower end of the inner ring tube 121 (i.e., the lower end of the penetration hole 14) communicates with the outside of the burner, and the dry burning prevention member 5 forms a gap with the inner surface of the inner ring tube 121. As shown in fig. 6, when the burner starts to burn, a certain negative pressure is formed at the upper end of the inner ring pipe 121, and a gap is formed between the dry burning prevention assembly 5 and the surface of the inner ring pipe 121, so that air automatically flows along the through hole 14 from bottom to top and passes through the surface of the dry burning prevention assembly 5, thereby reducing the surface temperature of the dry burning prevention assembly 5, avoiding the over-high temperature around the dry burning prevention assembly 5, and ensuring the stable operation of the dry burning prevention assembly 5.

In one embodiment, as shown in fig. 7, the inner diameter of the inner circular pipe 121 is gradually decreased from bottom to top, so that the flow surface inside the inner circular pipe 121 is gradually decreased, and the flow speed of the air flow is increased, so that the air flow can take away more heat around the dry burning prevention assembly 5 in a unit time, thereby better cooling the dry burning prevention assembly 5.

In one embodiment, as shown in fig. 8, the inner surface of the inner collar 121 is formed with a protrusion 1211, and the protrusion 1211 is configured to enhance the disturbance of the airflow inside the inner collar 121, thereby enhancing the heat exchange efficiency between the airflow and the surface of the anti-dry heating assembly 5, and thus better cooling the anti-dry heating assembly 5. Alternatively, as shown in fig. 8, the extension track of the protrusion 1211 is a spiral structure taking the axis of the inner annular pipe 121 as the axis, and the protrusion 1211 of the spiral structure can generate a rotating airflow in the inner annular pipe 121, so that the disturbance of the airflow is stronger, and the cooling effect of the anti-dry heating assembly 5 is better. In another embodiment, as shown in fig. 9, the projection 1211 is configured in a plurality of rings spaced apart in the axial direction of the inner collar 121. In other embodiments, the specific shape and distribution of the protrusions 1211 are not specifically limited herein.

Preferably, the internal surface coating of inner ring pipe 121 has the insulating layer, can further avoid preventing the condition that dry combustion method subassembly 5 surrounding temperature is too high to appear through setting up the insulating layer, guarantees to prevent that dry combustion method subassembly 5 normally works. Alternatively, the heat insulation layer may be asbestos, glass fiber, or the like, and is not particularly limited herein.

At the combustor during operation, along the upper and lower side, high temperature is from outer ring fire lid 3, on inner ring fire lid 4 conducts distributor 2, further conduct again on nozzle holder 1, to the nozzle holder 1 that adopts the integrative casting of aluminium material among the prior art, nozzle holder 1 self thermal resistance is little, consequently, lead to whole nozzle holder 1 the too high condition of temperature to appear very easily, and then lead to nozzle holder 1 to be heated the deformation, not only influence the shape precision of gas passage in the nozzle holder 1, and reduced nozzle holder 1's life.

Preferably, in the present embodiment, as shown in fig. 10, the mounting assembly 12 and the nozzle holder main body 11 are separate parts, and the mounting assembly 12 and the nozzle holder main body 11 have a contact surface therebetween. The contact surface is rough relatively, so the thermal resistance is large, the temperature transmitted to the nozzle seat main body 11 can be greatly reduced, the over-high temperature of the nozzle seat main body 11 is avoided, the shape precision of the internal channel of the nozzle seat main body 11 is ensured, and the service life of the nozzle seat 1 is also prolonged.

In this embodiment, as shown in fig. 10, the lower end of the mounting assembly 12 is clamped to the upper end of the nozzle holder main body 11 through the concave-convex structure, so that the connection firmness of the mounting assembly 12 and the nozzle holder main body 11 is ensured, and the good sealing performance of the assembly matching position of the mounting assembly 12 and the nozzle holder 1 is also ensured. Specifically, the inner ring pipe 121, the middle ring pipe 122, and the outer ring pipe 123 are respectively matched with the nozzle holder body 11 through a concave-convex structure.

In some embodiments, the mounting assembly 12 is cast as an insert integrally with the nozzle carrier body 11, as shown in fig. 10. The molding mode of pouring molding can directly realize the concave-convex matching between the mounting component 12 and the nozzle holder main body 11, thereby not only greatly reducing the assembly difficulty of the mounting component 12 and the nozzle holder main body 11, but also ensuring the tight matching between the mounting component 12 and the nozzle holder main body 11 and avoiding generating a gap between the mounting component 12 and the nozzle holder main body 11 in a high-temperature state. In this embodiment, the inner ring tube 121, the middle ring tube 122 and the outer ring tube 123 are used as inserts for casting the nozzle holder body 11. Optionally, the nozzle holder body 11 is cast from aluminum or an aluminum alloy, and since the nozzle holder body 11 is no longer in contact with the distributor 2 and the inner ring fire cover 4, it will not wear and produce no gap. The aluminum material is low in cost, thereby reducing the cost of the nozzle carrier 1 and the entire burner.

In another embodiment, as shown in fig. 11, a part of the structure of the mounting assembly 12 is integrally cast and molded with the nozzle holder body 11 as an insert, and another part of the structure of the mounting assembly 12 is connected by a fastener after the nozzle holder body 11 is molded, so that the number of inserts in the casting process of the nozzle holder body 11 is reduced, and the casting difficulty is further reduced. Specifically, as shown in fig. 11, the outer annular pipe 123 and the middle annular pipe 122 of the mounting assembly 12 are both integrally cast with the nozzle holder body 11 as inserts. The inner ring tube 121 of the mounting assembly 12 includes an end plate 1213 connected to the lower end of the tube body 1212, the tube body 1212 is inserted into the middle ring tube 122 from bottom to top, and the end plate 1213 abuts against the lower end of the nozzle holder main body 11 and is connected by a fastener. Optionally, the lower end of the nozzle holder body 11 is provided with a threaded hole, the fastener is a bolt, and the bolt is connected with the threaded hole after penetrating through the end plate 1213, so as to connect the inner ring pipe 121 and the nozzle holder body 11.

It is understood that the form of engaging the mounting assembly 12 with the nozzle holder body 11 in the concave-convex structure is not limited to the above, and may be that one of the mounting assembly 12 and the nozzle holder body 11 has a better elastic deformation capability, and the mounting assembly 12 is engaged with the nozzle holder body 11 by pressing the mounting assembly 12 with force, and is not limited in this respect.

Preferably, as shown in fig. 12, a heat insulating pad 13 is provided between the nozzle holder main body 11 and the mounting assembly 12. The upper surface of the heat insulation pad 13 is in contact with the mounting assembly 12, thermal contact resistance exists, the lower surface of the heat insulation pad 13 is in contact with the nozzle holder main body 11, thermal contact resistance also exists, the heat finally transmitted to the nozzle holder main body 11 is lower due to the superposition effect, the cooling effect is better, and therefore the nozzle holder main body 11 can be better prevented from deforming. In some embodiments, the thermal insulation pad 13 is made of a material with a low thermal conductivity, and in this case, in addition to the thermal contact resistance of the upper and lower surfaces of the thermal insulation pad 13, the thermal insulation pad 13 itself has a high thermal resistance, so that the temperature transmitted to the nozzle holder body 11 can be further reduced, and the nozzle holder body 11 is prevented from being deformed. Specifically, the heat insulation pad 13 may be an alloy material with a poor thermal conductivity, or a ceramic material, and the like, which is not limited herein.

In this embodiment, as shown in fig. 13 to 15, a central gas flow passage 124 is formed between the inner ring pipe 121 and the middle ring pipe 122, an outer ring gas flow passage 125 is formed between the middle ring pipe 122 and the outer ring pipe 123, an arc-shaped outer ring mixing chamber 111 and an arc-shaped inner ring mixing chamber 112 are formed on the nozzle holder 1, an outer ring ejector pipe 113 and an inner ring ejector pipe 114 are further formed on the nozzle holder 1, the outer ring ejector pipe 113 is communicated with the distributor 2 sequentially through the outer ring mixing chamber 111 and the outer ring gas flow passage 125, and the inner ring ejector pipe 114 is communicated with the inner ring fire cover 4 sequentially through the inner ring mixing chamber 112 and the central gas flow passage 124. When the burner is used, gas enters the nozzle seat main body 11 through the outer ring injection pipe 113 and the inner ring injection pipe 114 respectively, the gas entering from the outer ring injection pipe 113 enters the distributor 2 through the outer ring mixing cavity 111 and the outer ring gas flow passage 125, and then enters the outer ring fire cover 3 from the distributor 2 for combustion; the gas entering from the inner ring ejector pipe 114 enters the inner ring fire cover 4 through the inner ring mixing cavity 112 and the central gas flow passage 124 for combustion. Through drawing the mixing chamber, the air current runner that penetrate the pipe and correspond and make the gas fully mix with the air, can improve the mixing uniformity of gas and air to promote the abundant burning of gas, improved combustion efficiency.

Preferably, as shown in fig. 15, the outer ring ejector pipe 113 is arranged tangentially to the outer ring mixing chamber 111, and the inner ring ejector pipe 114 is arranged tangentially to the inner ring mixing chamber 112. Tangent setting makes between outer loop ejector pipe 113 and outer loop mixing chamber 111, the inner ring ejector pipe 114 smoothly be connected with between the inner ring mixing chamber 112 to can reduce the impact loss when the air current gets into the air mixing chamber that corresponds from the ejector pipe, guarantee that the air current has great kinetic energy, thereby promote gas and air mixing, improve combustion efficiency.

Preferably, as shown in fig. 13 and 16, the lower end of the middle ring pipe 122 is lower than the lower end of the outer ring pipe 123, a transition passage 18 is formed between the lower end of the middle ring pipe 122 and the side wall of the outer ring mixing chamber 111, the transition passage 18 communicates the outer ring mixing chamber 111 and the outer ring gas flow passage 125, the lower end of the middle ring pipe 122 is provided with a bent portion 1221, and the bent portion 1221 makes the width of the transition passage 18 equal to the width of the outer ring gas flow passage 125, even if the flow areas of the transition passage 18 and the outer ring gas flow passage 125 are equal, so that the gas flow rate is uniform, the stability and uniformity of the gas flow in the outer ring gas flow passage 125 and the distributor 2 are improved, and the flame generated at the outer ring flame cover 3 is stable. In this embodiment, the extending direction of the side wall of the portion of the outer ring mixing chamber 111 opposite to the bent portion 1221 is the same as the extending direction of the bent portion 1221, so as to ensure the uniform flow area of the transition passage 18.

Among the prior art, the complicated installation of structure of preventing dry combustion method subassembly 5 is inconvenient, not only influences the assembly efficiency of combustor, and the later maintenance of being not convenient for.

Preferably, as shown in fig. 2 to 3, the nozzle holder 1 has a through hole 14 formed at the center thereof in the up-down direction, the anti-dry heating assembly 5 includes a temperature sensor 51, a support rod 52, and a clip 53, wherein the support rod 52 is connected to a lower end of the temperature sensor 51, the temperature sensor 51 and the support rod 52 are both disposed in the through hole 14, the clip 53 is formed with a mounting hole 533, a lower end of the support rod 52 is inserted into the mounting hole 533, and the clip 53 is detachably connected to the nozzle holder 1. Can realize the fixed to temperature sensor 51 through clamp 53 and bracing piece 52, and clamp 53 can dismantle with nozzle holder 1 and be connected the installation that makes whole prevent dry combustion method subassembly 5 and nozzle holder 1 with dismantle conveniently, overall structure is simple, simple to operate, and then can improve the assembly efficiency of whole combustor, also be convenient for prevent dry combustion method subassembly 5 and carry out the later maintenance. In this embodiment, as shown in fig. 6, the inner ring tube 121 and a part of the nozzle holder body 11 together form the through hole 14, and the clip 53 is detachably connected to the nozzle holder body 11. Alternatively, the support rod 52 and the temperature sensor 51 may be connected by any means, such as adhesion, fastening, welding, etc., and are not limited herein.

Preferably, as shown in fig. 3, 13 and 17, a groove 15 is provided on a side wall of the through hole 14, specifically, the groove 15 is provided on the nozzle holder body 11, the groove 15 is located at a lower end of the inner collar 121 and is coaxially arranged with the inner collar 121, the groove 15 and the inner collar 121 together form the through hole 14, and the clip 53 is clipped in the groove 15. Recess 15 can realize respectively that it is spacing along upper and lower direction and follow the radial of through hole 14 to carry on clamp 53, enables clamp 53 and can fix a position fast when the dry combustion method subassembly 5 is prevented in the installation, and then realizes the location to whole dry combustion method subassembly 5 fast, improves the assembly efficiency of combustor. In this embodiment, the upper and lower end surfaces of the clip 53 abut against the upper and lower side walls of the groove 15, respectively.

In this embodiment, as shown in fig. 17 and 18, the clamp 53 includes two clasping arms 531 formed by bending a sheet metal, each clasping arm 531 is provided with a half groove 532, the two half grooves 532 surround to form the mounting hole 533, and the two clasping arms 531 are formed by bending a sheet metal, so that the clamp has a certain elastic deformation capability. As shown in fig. 17, a notch 16 is formed on the circumferential surface of the groove 15, the notch 16 includes two first side walls 17 which are oppositely arranged, the two first side walls 17 correspondingly press the two clasping arms 531, and the two clasping arms 531 elastically deform and approach each other, so that the support rod 52 can be clamped. When the anti-dry heating assembly 5 is installed, the temperature sensor 51 and the support rod 52 are placed in the inner ring pipe 121, then the clamp 53 is installed at the groove 15 and the notch 16, the notch 16 extrudes the two holding arms 531 at the moment, so that the support rod 52 is clamped, and finally the clamp 53 is fixed on the nozzle holder main body 11.

Preferably, the mounting hole 533 formed by the two half grooves 532 is coaxial with the support rod 52, so that the support rod 52 can be uniformly held when the two holding arms 531 are close to each other, which not only ensures the reliability of the installation of the support rod 52, but also avoids the extending direction of the support rod 52 from deflecting, so that the temperature sensor 51 connected with the support rod 52 keeps a vertical state, thereby ensuring that the temperature sensor 51 can reliably detect the temperature of the bottom of the cookware.

Preferably, as shown in fig. 18, the clasping arm 531 comprises a body portion 5311 and an extension portion 5312, the length of the extension portion 5312 is greater than the length of the body portion 5311 in the axial direction of the through hole 14, and the half groove 532 is provided on the extension portion 5312. The extension portion 5312 is longer in the axial direction, so that the half groove 532 is larger in the axial direction, the matching length of the half groove 532 and the support rod 52 is increased, and the reliability and the accuracy of the clamping direction of the clamp 53 on the support rod 52 can be improved.

Preferably, as shown in fig. 18, two clasping arms 531 are provided with ears 534, and the ears 534 are connected with the nozzle holder 1 through fasteners, so as to connect the clip 53 with the nozzle holder main body 11. In this embodiment, the ear portions 534 are provided with through holes, the ear portions 534 abut against the bottom surface of the nozzle holder main body 11, and the fastening member passes through the through holes and then is connected with the nozzle holder main body 11, so as to connect the whole clamp 53 with the nozzle holder main body 11. In other embodiments, the fastening member may be a pin, and in this case, a pin hole is correspondingly formed on the bottom surface of the nozzle holder body 11.

Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and for those skilled in the art, there are variations on the specific embodiments and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A burner, comprising a nozzle holder (1) and an anti-dry burning assembly (5), wherein a through hole (14) extending in an up-and-down direction is formed at the center of the nozzle holder (1), and the anti-dry burning assembly (5) comprises:

a temperature sensor (51) and a support rod (52) which are arranged in the through hole (14), wherein the support rod (52) is connected to the lower end of the temperature sensor (51);

the clamp (53) is formed with a mounting hole (533), the lower end of the support rod (52) is inserted into the mounting hole (533), and the clamp (53) is detachably connected with the nozzle holder (1).

2. Burner according to claim 1, wherein a recess (15) is provided in the side wall of said through hole (14), said clip (53) being snap-fitted in said recess (15).

3. The burner of claim 2, wherein the clamp band (53) comprises two holding arms (531) formed by bending sheet metal, a half groove (532) is formed on each holding arm (531), and the two half grooves (532) surround the mounting hole (533);

be provided with breach (16) on the global of recess (15), breach (16) include two relative first lateral wall (17) that set up, two first lateral wall (17) correspond extrudees two hold close arm (531) and be close to mutually in order to press from both sides tight bracing piece (52).

4. A burner according to claim 3, characterised in that at least one of said clasping arms (531) is provided with an ear (534), said ear (534) being connected to said nozzle holder (1) by means of a fastener.

5. A burner according to claim 3, wherein said clasping arm (531) comprises a body portion (5311) and an extended portion (5312), a length of said extended portion (5312) is greater than a length of said body portion (5311) in an axial direction of said through hole (14), and said half-groove (532) is provided on said extended portion (5312).

6. A burner as claimed in claim 3, characterised in that said support rod (52) is arranged coaxially with said mounting hole (533).

7. A burner according to any of the claims 1 to 6, characterized in that the burner further comprises a distributor (2), an inner ring fire cover (4) and an outer ring fire cover (3), the distributor (2) being fitted to the nozzle holder (1), the outer ring fire cover (3) being mounted on the distributor (2), the inner ring fire cover (4) being arranged at the inner ring of the outer ring fire cover (3) and being fitted to the nozzle holder (1).

8. A burner as claimed in claim 7, characterised in that the nozzle holder (1) comprises a nozzle holder body (11) and a mounting assembly (12), there being an interface between the nozzle holder body (11) and the mounting assembly (12), the mounting assembly (12) being mounted on the nozzle holder body (11), the distributor (2) and the inner ring fire cover (4) being connected to the mounting assembly (12).

9. The burner as claimed in claim 8, wherein the mounting assembly (12) comprises a plurality of inner ring pipes (121), a middle ring pipe (122) and an outer ring pipe (123) which are sequentially sleeved from inside to outside, a central gas flow passage (124) is formed between the inner ring pipe (121) and the middle ring pipe (122), an outer ring gas flow passage (125) is formed between the middle ring pipe (122) and the outer ring pipe (123), an arc-shaped outer ring mixing cavity (111) and an inner ring mixing cavity (112) are formed on the nozzle base (1), an outer ring ejector pipe (113) and an inner ring ejector pipe (114) are further formed on the nozzle base (1), the outer ring ejector pipe (113) is sequentially communicated with the outer ring mixing cavity (111) and the outer ring gas flow passage (125) and the distributor (2), and the inner ring ejector pipe (114) is sequentially communicated with the inner ring fire cover (4) through the inner ring mixing cavity (112) and the central gas flow passage (124).

10. Hob, characterized in that it comprises at least one burner according to any one of claims 1 to 9.

Images