CN212178870U

CN212178870U - Fire cover, burner and gas appliance

Info

Publication number: CN212178870U
Application number: CN202020596936.6U
Authority: CN
Inventors: 孟甜; 唐松茂; 张炳卫; 揭华云
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2020-03-02
Filing date: 2020-04-20
Publication date: 2020-12-18
Anticipated expiration: 2030-04-20
Also published as: CN111473328A

Abstract

The utility model discloses a fire lid, combustor and gas apparatus. The fire cover is used for the burner. The fire cover comprises a fire cover body, an infrared combustion carrier and an annular cover body. The fire lid body comprises a top wall and a first step structure convexly arranged on the top wall. The annular cover body is arranged on the first step structure, and the top wall, the first step structure and the annular cover body jointly form an accommodating cavity. The infrared combustion carrier is arranged above the top wall and is positioned in the accommodating cavity and exposed from the middle part of the annular cover body. The utility model discloses embodiment's fire lid compresses tightly the infrared combustion carrier in holding the intracavity through annular lid, and the infrared combustion carrier is difficult for covering from the fire and drops, and split type annular lid and the easy installation of fire lid body are dismantled from top to bottom in addition, conveniently change the infrared combustion carrier.

Description

Fire cover, burner and gas appliance

Technical Field

The utility model relates to a gas apparatus technical field, in particular to fire lid, combustor and gas apparatus.

Background

The burners are classified into general burners and infrared burners according to their combustion modes. The infrared burner is through covering at the fire and increasing infrared burning carrier, makes the heat of combustor burning come out with the form radiation of infrared ray, and heat exchange efficiency is high, can improve combustion efficiency. In the related art, the infrared combustion carrier is only simply covered and fixed on the top of the cover body of the fire cover, and after the burner is used for a period of time, the infrared combustion carrier is easy to fall off and cannot be replaced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses embodiment provides a fire lid, combustor and gas apparatus.

The utility model discloses fire lid of embodiment for the combustor, fire lid is including fire lid body, infrared burning carrier and annular lid, fire lid body includes the roof and protruding locating first ladder structure on the roof, the annular lid is located first ladder is structural, the roof first ladder structure with the cavity is held in the common formation of annular lid, infrared burning carrier is located the roof top, infrared burning carrier is located hold the intracavity and certainly the middle part of annular lid exposes.

The utility model discloses embodiment's fire lid compresses tightly the infrared combustion carrier in holding the intracavity through annular lid, and the infrared combustion carrier is difficult for covering from the fire and drops, and split type annular lid and the easy installation of fire lid body are dismantled from top to bottom in addition, conveniently change the infrared combustion carrier.

In some embodiments, the annular cover and the first step structure are connected by a threaded fit.

In some embodiments, the first step structure comprises a first step and a second step which are connected, the second step and the first step are distributed outwards in sequence along the central axis of the fire cover, the annular cover body is provided with a convex edge, the first step is provided with an external thread, and the inner side of the convex edge is provided with an internal thread matched with the external thread.

In some embodiments, the fire cover body includes an annular peripheral wall connected to the top wall, the annular peripheral wall and the top wall together form a gas mixing chamber, the annular peripheral wall defines a fire hole communicating with the gas mixing chamber, the fire hole is inclined outward relative to a central axis of the fire cover, and the top wall defines a through hole communicating with the gas mixing chamber and the infrared combustion carrier.

In some embodiments, the annular peripheral wall is provided with a flame holding groove, the flame holding groove is located below the fire hole, and the flame holding groove communicates the fire hole and the gas mixing chamber.

In some embodiments, a buffer chamber is formed between the top wall and the infrared combustion carrier, the buffer chamber is communicated with the through hole, the gas mixing chamber is used for containing mixed gas of gas and air, and the fire cover is configured to enable the mixed gas to enter the buffer chamber from the gas mixing chamber through the through hole and form a backflow area in the buffer chamber.

In certain embodiments, the lower end of the annular peripheral wall forms a second step structure.

In certain embodiments, the fire cover includes an annular fastener that connects and secures the infrared combustion carrier to the first stepped structure.

The burner of the embodiment of the utility model comprises the fire cover of any one of the above embodiments.

The utility model discloses embodiment's combustor, fire lid compress tightly the infrared burning carrier in holding the intracavity through annular lid, and the infrared burning carrier is difficult for covering from the fire and drops, and split type annular lid and the easy installation of fire lid body are dismantled from top to bottom in addition, conveniently change the infrared burning carrier.

The gas appliance of the embodiment of the utility model comprises the burner of the above embodiment.

The utility model discloses embodiment's gas apparatus, fire lid compress tightly the infrared burning carrier in holding the intracavity through annular lid, and the infrared burning carrier is difficult for covering from the fire and drops, and split type annular lid and the easy installation of fire lid body are dismantled from top to bottom in addition, conveniently change the infrared burning carrier.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

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

fig. 2 is a schematic perspective view of a fire cover according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a fire lid according to an embodiment of the present invention;

FIG. 4 is an exploded schematic view of a fire lid according to an embodiment of the present invention;

FIG. 5 is another exploded schematic view of the fire lid of an embodiment of the present invention;

fig. 6 is a partially exploded schematic view of a burner according to an embodiment of the present invention.

Description of the main element symbols:

the burner 100, the fire cover 10, the fire cover body 12, the annular peripheral wall 122, the fire hole 1222, the first injection port 1222a, the second injection port 1222b, the flame holding groove 1224, the second step structure 123, the third step 1232, the inner ring surface 1232a, the fourth step 1234, the inner ring surface 1234a, the step surface 1234b, the flame holding hole 1234c, the fifth step 1236, the inner ring surface 1236a, the top wall 124, the through hole 1242, the first step structure 126, the first step 1262, the inner ring surface 1262a, the second step 1264, the inner ring surface 1264a, the step surface 1264b, the gas mixing chamber 128, the infrared combustion carrier 14, the annular cover body 16, the flange 162, the diversion trench 164, the annular fastener 18, the circular ring 182, the flange 184, the accommodation chamber 11, the buffer chamber 13, the gas distribution plate 20, the inner ring cavity flange 22, and the inner ring 222.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but 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 therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 5, a fire cover 10 according to an embodiment of the present invention is applied to a burner 100. The fire lid 10 includes a fire lid body 12, an infrared combustion carrier 14, and an annular lid body 16. The fire lid body 12 includes an annular peripheral wall 122, a top wall 124 connecting the annular peripheral wall 122, and a first step structure 126 connecting the top wall 124. The annular peripheral wall 122 and the top wall 124 together form a gas mixing chamber 128, and the gas mixing chamber 128 is used for containing mixed gas of gas and air. The infrared combustion carrier 14 is disposed above the top wall 124. The annular peripheral wall 122 is provided with fire holes 1222 communicating with the gas mixing chamber 128, and the top wall 124 is provided with through holes 1242 communicating the gas mixing chamber 128 and the infrared combustion carrier 14.

Like this, realized two kinds of combustion methods of atmospheric combustion and infrared burning through same gas mixing chamber 128, not only can improve the higher problem of fume emission effectively, can increase the load of fire lid 10 moreover, reduce the risk of tempering.

It can be understood that the annular peripheral wall 122 is provided with a plurality of fire holes 1222, the plurality of fire holes 1222 are distributed in two rows along the circumferential direction of the annular peripheral wall 122, and the top wall 124 is provided with a plurality of through holes 1242 so that the top wall 124 forms a mesh structure. The infrared combustion support 14 is a mesh structure having pores. The mixed gas in the gas mixing chamber 128 is partially ejected through the fire holes 1222 of the annular peripheral wall 122, ignited, and then subjected to atmospheric combustion. A part of the infrared combustion carrier 14 is sprayed out from the top wall 124 through the through holes 1242 of the top wall 124, and after ignition, infrared combustion is carried out. Under the infrared combustion mode, the burning of mist is more complete, and the emission flue gas is low, and the noise is little. The fire cover 10 adopts a pseudo dual-ring combustion structure of atmospheric combustion (atmospheric partial premixed combustion) and infrared combustion, two combustion modes of mixed gas in the same channel coexist, the load of the fire cover 10 can be increased, and the risk of return air is reduced. The fire cover 10 is heat-radiating at the center for heat exchange and heat convection at the side for heat exchange.

The utility model discloses in the embodiment, the whole material that can adopt aluminium or copper of fire lid body 12 makes into an organic whole structure, and aluminium has the performance of good hot working and with low costs, and copper has high temperature resistant characteristic, can guarantee the life of interior fire lid 10. The annular cover 16 may also be made of aluminum or copper. The fire lid body 12 and the annular lid body 16 may be manufactured by casting and hot stamping. Thus, the simple manufacturing method can effectively reduce the production cost of the fire cover 10 and improve certain production efficiency.

In an embodiment of the present invention, the infrared combustion carrier 14 includes at least one of a metal fiber mesh, an iron-chromium-aluminum mesh plate, and a carbon-silicon fiber mesh. It is to be understood that the infrared combustion support 14 can be a metal fiber mesh, an iron chromium aluminum mesh sheet, or a carbon silicon fiber mesh, or a combination of two of the metal fiber mesh, the iron chromium aluminum mesh sheet, and the carbon silicon fiber mesh, or a combination of three of the metal fiber mesh, the iron chromium aluminum mesh sheet, and the carbon silicon fiber mesh. The metal fiber net and the carbon-silicon fiber net can be formed by adopting a weaving mode. The metal fiber net is used as the infrared combustion carrier 14, so that the heat radiation efficiency is high, the tempering is not easy, and the service life is long. The iron-chromium-aluminum mesh plate is high-temperature resistant, reliable in structure, easy to burn and low in cost, and the iron-chromium-aluminum mesh plate can be burned and red by using flame combustion outer flame at high temperature; because the porosity of the iron-chromium-aluminum screen plate is larger, a plurality of layers of screen plates with different meshes can be used in an overlapping way to prevent tempering. The carbon-silicon fiber net has large porosity and uniform structure, and the thermal load range for realizing infrared combustion is wider.

In the illustrated embodiment, the fire lid 10 is generally cylindrical in shape. In other embodiments, the fire lid 10 may be shaped as a truncated cone, a cube, or the like as a whole. The fire lid 10 is described in detail below as being generally cylindrical in shape.

Referring to fig. 3 and 4, the first step structure 126 is protruded on the top wall 124, the annular cover 16 is disposed on the first step structure 126, and the top wall 124, the first step structure 126 and the annular cover 16 together form the accommodating cavity 11. An infrared combustion carrier 14 is positioned within the receiving cavity and emerges from a central portion of the annular cover 16. Like this, compress tightly infrared burning carrier 14 in holding the intracavity through annular lid 16, infrared burning carrier 14 is difficult for following the fire and covers 10 and drop, and split type annular lid 16 and the easy installation of fire lid body 12 are dismantled from top to bottom in addition, conveniently change infrared burning carrier 14. Meanwhile, the infrared combustion carrier 14 is arranged above the top wall 124, and the mixed gas in the gas mixing chamber 128 can perform infrared combustion on the infrared combustion carrier 14 through the through holes 1242 of the top wall 124 to form a central flame.

Specifically, the first step structure 126 includes a first step 1262 and a second step 1264 connected to each other, the second step 1264 and the first step 1262 are sequentially distributed along the central axis X of the fire cover 10, the annular cover 16 is provided with a convex edge 162, the convex edge 162 is engaged with the first step 1262, and the infrared combustion carrier 14 is disposed on the second step 1264.

It is to be appreciated that the first and

second steps

1262, 1264 are each circular in shape, the central axes of the first and

second steps

1262, 1264 are coincident with the central axis X of the fire lid 10 (coincidence can include complete coincidence, or deviation of the two within a desired range), the distance from the inner annular surface 1262a of the first step 1262 to the central axis X of the fire lid 10 is greater than the distance from the inner annular surface 1264a of the second step 1264 to the central axis X of the fire lid 10, and the first step 1262 is located above the second step 1264. The infrared combustion supporter 14 is provided on the second step 1264, and the infrared combustion supporter 14 contacts the step surface 1264b of the second step 1264 and the inner ring surface 1262a of the first step 1262. The rim 162 of the annular cover 16 is also circular in shape and the rim 162 cooperates with the first step 1262. Accordingly, after the infrared combustion carrier 14 is seated on the second ledge 1264, the annular cover 16 is seated on the first step structure 126, the rim 162 is engaged with the first ledge 1262, and the first ledge 1262 is located inwardly of the rim 162, thereby confining and compressing the infrared combustion carrier 14 seated on the second ledge 1264 within the receiving cavity.

In other embodiments, the first step structure 126 may comprise a circular step, and the infrared combustion support 14 may be disposed on a step surface of the circular step; or the infrared combustion carrier 14 is directly arranged on the top wall 124, and the peripheral side surface of the infrared combustion carrier 14 is contacted with the inner ring surface of the circular step.

Further, the fire lid 10 includes an annular fastener 18, the annular fastener 18 engaging the first stepped structure 126 and securing the infrared combustion carrier 14 to the first stepped structure 126. It is understood that the fire cover 10 is split up and down, and comprises a fire cover body 12, an annular cover body 16, an infrared combustion carrier 14 and an annular fastener 18. The annular fastener 18 includes a ring 182 and an inwardly protruding edge 184 disposed on the outer periphery of the ring 182. Specifically, the ring member 182 is circular, the infrared combustion carrier 14 is circular, and the infrared combustion carrier 14 is accommodated in a space formed between the ring member 182 and the pressing edge 184 and is fastened with the pressing edge 184 through the ring member 182. In one aspect, the periphery of the infrared combustion carrier 14 is covered by the annular fastener 18, which protects the infrared combustion carrier 14; on the other hand, when the infrared combustion carrier 14 is formed by stacking one or more of a metal fiber mesh, an iron-chromium-aluminum mesh plate and a carbon-silicon fiber mesh, the loop fastener 18 can fasten multiple layers of materials of the infrared combustion carrier 14. The loop fastener 18 may be made of a high temperature resistant metal material.

During assembly of the fire lid 10, the infrared combustion support 14 and the annular fastening member 18 may be assembled together, for example, the infrared combustion support 14 has a certain deformation amount, the infrared combustion support 14 may be pressed into the space formed between the ring member 182 and the pressing edge 184 by its own deformation, the infrared combustion support 14 is clamped by the annular fastening member 18, then the annular fastening member 18 with the infrared combustion support 14 is placed on the second step 1264, and the annular fastening member 18 with the infrared combustion support 14 is pressed by the cooperation of the annular cover 16 and the first step structure 126, so as to form the fire lid 10. After assembly, the annular fastener 18 with the infrared combustion carrier 14 contacts the step surface 1264b of the second step 1264 and the inner annular surface 1262a of the first step 1262.

In an embodiment of the present invention, the annular cover 16 and the first step structure 126 may be connected by a screw fit. Specifically, the first step 1262 of the first step structure 126 is provided with external threads, and the inner side of the collar 162 of the annular cover 16 is provided with internal threads that mate with the external threads. The flange 162 is threadably engaged with the first step 1262 such that the annular cover 16 is disposed on the first step structure 126 and compresses the infrared combustion carrier 14. The annular cover body 16 is more reliably connected with the first stepped structure 126 through thread fit, is convenient to mount and dismount, and can realize coexistence of two combustion modes in the same channel through combination of multiple parts. In other embodiments, the annular cover 16 and the first step structure 126 may be secured by a screw, rivet, or other connection.

Referring to fig. 2, a diversion trench 164 is formed on the upper surface of the annular cover 16. It will be appreciated that during cooking by the user, there may be instances where liquid drips onto the fire lid 10. The arrangement of the diversion trench 164 can guide the accumulated liquid on the annular cover 16 to play a role of anti-blocking. In the illustrated embodiment, the annular cover 16 has a raised ring on its upper surface, and a diversion trench 164 is formed in the peripheral wall of the raised ring. In other embodiments, the circumferential wall of the collar may be formed with two or more flow guide grooves 164, and the two or more flow guide grooves 164 are uniformly distributed at intervals. It is understood that in other embodiments, the upper surface of the annular cover 16 is generally planar, and the channels 164 may be formed by recessing the upper surface of the annular cover 16 downward.

Referring to fig. 2 and 3, the annular wall 122 is provided with a flame holding groove 1224, the flame holding groove 1224 is located below the fire hole 1222, and the flame holding groove 1224 communicates with the fire hole 1222 and the gas mixing chamber 128. Thus, during operation of the burner 100, the flame formed by the flame holding grooves 1224 holds the flame base formed by the fire apertures 1222, thereby preventing or reducing the chance of gas leaving the fire apertures 1222. It will be appreciated that the flame holding groove 1224 is annular and is defined by an inwardly recessed annular perimeter wall 122.

Further, the fire hole 1222 includes first and

second injection ports

1222a and 1222b, and the second injection port 1222b communicates with the flame holding groove 1224. The mixed gas is injected from the fire hole 1222 toward the first injection port 1222a and the second injection port 1222b, and the mixed gas is ignited and burned to form a flame. The second injection ports 1222b communicate with the flame holding grooves 1224, and may supplement the flame holding grooves 1224 with a mixed gas, so that the flame formed in the flame holding grooves 1224 is more stable. In the illustrated embodiment, the fire apertures 1222 are angled outwardly relative to the central axis X of the fire lid 10. Thus, increasing the length of the fire hole 1222 stores more mixture gas in the fire hole 1222, thereby stabilizing the flame combustion at the fire hole 1222. In the present invention, the central axis X of the fire cover 10 is along the vertical direction, and the inclination does not include the horizontal direction, which means that the central axis X of the fire hole 1222 is intersected with the central axis X of the fire cover 10 and is not perpendicular thereto. The angle of inclination of the fire holes 1222 with respect to the central axis X of the fire cover 10 may be 20 degrees to 45 degrees, such as 20 degrees, 45 degrees, or other degrees between 20 degrees and 45 degrees.

Referring to fig. 5, a second step structure 123 is formed at the lower end of the annular peripheral wall 122. It will be appreciated that the provision of the second step structure 123 facilitates the location mounting of the fire cover 10 to the burner 100. Specifically, the second stepped structure 123 includes a third step 1232, a fourth step 1234 and a fifth step 1236 connected to each other, and the fifth step 1236, the fourth step 1234 and the third step 1232 are sequentially distributed along the central axis X of the fire cover 10. The third step 1232, the fourth step 1234 and the fifth step 1236 are all circular rings, the central axes of the third step 1232, the fourth step 1234 and the fifth step 1236 coincide with the central axis X of the fire lid 10 (the coincidence may include complete coincidence, or the deviation of the two is within a desired range), the distance from the inner annular surface 1232a of the third step 1232 to the central axis X of the fire lid 10 is greater than the distance from the inner annular surface 1234a of the fourth step 1234 to the central axis X of the fire lid 10, and the distance from the inner annular surface 1234a of the fourth step 1234 to the central axis X of the fire lid 10 is greater than the distance from the inner annular surface 1236a of the fifth step 1236 to the central axis X of the fire lid 10.

Referring to fig. 1 and 6, the fire cover 10 may be used as an inner fire cover of the burner 100, and the gas distribution plate 20 of the burner 100 includes an inner ring cavity 22, and the inner ring cavity 22 is provided with a flange 222 engaged with the second step structure 123. When the fire cover 10 is mounted on the gas distribution plate 20 of the burner 100, the second stepped structure 123 can be connected with the convex edge 222 of the inner ring cavity 22 in a matching manner, so that the fire cover 10 is conveniently positioned and mounted. Specifically, the third step 1232 surrounds the rim 222 of the inner ring cavity 22, and the rim 222 contacts the inner ring surface 1232a of the third step 1232 and the step surface 1234b of the fourth step 1234.

Further, a flame stabilizing hole 1234c is formed in the fourth step 1234, the flame stabilizing hole 1234c is communicated with the gas mixing chamber 128 and the flame stabilizing groove 1224, and a fire hole 1222 is formed in the fifth step 1236. It will be appreciated that the outer annular surfaces of fourth step 1234 and fifth step 1236 extend to coincide, and that the thickness of fourth step 1234 is less than the thickness of fifth step 1236. Since the flame stabilizing hole 1234c is opened at the fourth step 1234, and the fire hole 1222 is opened at the fifth step 1236, the space of the gas mixing chamber 128 corresponding to the flame stabilizing hole 1234c is larger. Compared with the embodiment in which the flame stabilizing holes 1234c and the fire holes 1222 are formed in the annular peripheral wall 122 having the same thickness, in the present embodiment, the flame stabilizing holes 1234c are formed in the fourth step 1234c, so that the amount of air supplied to the flame stabilizing holes 1234c is large, and the flame stabilizing effect is good.

Referring to fig. 3, a buffer chamber 13 is formed between the top wall 124 and the ir combustion carrier 14, and the buffer chamber 13 is communicated with the through hole 1242. The gas mixing chamber 128 is for containing a mixture of gas and air. The fire lid 10 is configured to allow the mixed gas to enter the buffer chamber 13 from the gas mixture chamber 128 through the through holes 1242 and form a reflow region in the buffer chamber 13. The arrangement of the buffer chamber 13 enables the mixed gas to form a backflow area in the buffer chamber 13, further reduces the tempering risk, improves the flow velocity field of the mixed gas, enables the infrared combustion to be more stable, and can increase the load of the fire cover 10.

It can be understood that, compared with the fire cover with a single gas mixing chamber, the fire cover 10 of the present invention comprises two chambers of the gas mixing chamber 128 and the buffer chamber 13 which are communicated with each other, because the volume of the through hole 1242 for the mixed gas to pass through is smaller than the volume of the buffer chamber 13 for accommodating the mixed gas, when the mixed gas enters the buffer chamber 13 from the gas mixing chamber 128 through the through hole 1242 of the top wall 124, the volume of the mixed gas is suddenly enlarged, a backflow area is formed in the buffer chamber 13, the mixed gas of the gas and the air is more uniformly mixed through the gas disturbance of the backflow area, the gas and the air reach a completely premixed state, and the gas and the air are rapidly combusted in the pore channel of the infrared combustion carrier 14, so that the surface of the gas and the buffer; meanwhile, the buffer chamber 13 can also be pressurized and decelerated to slow down the flow velocity of the mixed gas, so that the mixed gas escapes from the infrared combustion carrier 14 at a very small velocity (usually 0.1-0.14 m/s) for combustion. Because the burning of mist, the backward flow district temperature that mist formed in buffer chamber 13 is higher relatively, and high temperature backward flow district can heat mist when burning, as a stable ignition source simultaneously, makes the mist that gets into buffer chamber 13 burn at once, has guaranteed higher burning heat intensity and combustion temperature. Under this kind of burning structure, can slow down the propagation velocity of mist, the velocity of flow field of mist is more even, increases the dwell time of infrared burning, makes the burning more abundant, and is more stable, prevents the tempering.

In one embodiment, the mixed gas in the gas mixing chamber 128 of the fire cover 10 is partially premixed and combusted in an atmospheric manner directly through the fire holes 1222 of the annular peripheral wall 122, and partially combusted in an infrared manner on the infrared combustion carrier 14 after being further mixed in the buffer chamber 13 through the through holes 1242 of the top wall 124. The fire cover 10 comprises two chambers, namely a gas mixing chamber 128 and a buffer chamber 13, so that gas and air in the fire cover 10 have two mixing states, and the combustion mode of coexistence of atmospheric combustion and infrared combustion is better realized.

In the illustrated embodiment, the first step structure 126 includes a first step 1262 and a second step 1264 that are raised above the top wall 124, and the infrared combustion supporter 14 is disposed on the second step 1264, with a buffer chamber 13 formed between the top wall 124 and the infrared supporter due to the height of the second step 1264. In other embodiments, the first step structure 126 may include a circular step protruding from the top wall 124, and the infrared combustion supporter 14 may be disposed on the circular step, and the buffer chamber 13 is formed between the top wall 124 and the infrared supporter due to the height of the circular step.

To sum up, the fire cover 10 of the present invention includes a fire cover body 12, an infrared combustion carrier 14 and an annular cover body 16. The fire lid body 12 includes a top wall 124 and a first step formation 126 projecting from the top wall 124. The annular cover 16 is disposed on the first stepped structure 126, and the top wall 124, the first stepped structure 126 and the annular cover 16 together form the accommodating chamber 11. The infrared combustion carrier 14 is disposed above the top wall 124, and the infrared combustion carrier 14 is located in the accommodating chamber 11 and exposed from the middle of the annular cover 16.

The utility model discloses embodiment's fire lid 10 compresses tightly infrared burning carrier 14 in holding the intracavity through annular lid 16, and infrared burning carrier 14 is difficult for coming off from fire lid 10, and split type annular lid 16 and the easy installation of fire lid body 12 are dismantled from top to bottom in addition, conveniently change infrared burning carrier 14.

Referring to fig. 1 and 6, a burner 100 according to an embodiment of the present invention includes a fire cover 10 according to the above embodiment.

The utility model discloses embodiment's combustor 100, fire lid 10 compresses tightly infrared burning carrier 14 in holding the intracavity through annular lid 16, and infrared burning carrier 14 is difficult for coming off from fire lid 10, and split type annular lid 16 and the easy installation of fire lid body 12 are dismantled from top to bottom in addition, conveniently change infrared burning carrier 14.

When in use, the fire cover 10 can be used as an inner fire cover arranged on the inner ring cavity 22 of the gas distribution plate 20 of the burner 100 and matched with the gas distribution plate 20 for use. The combustible gas mixture of gas and air in the gas mixing chamber 128 can be provided by an inner ring gas passage of the gas distributor 20. The burner 100 may be applied to gas appliances such as gas cookers, ovens, and gas water heaters.

The gas appliance of the present invention includes the burner 100 of the above embodiment.

The utility model discloses embodiment's gas apparatus, fire lid 10 compress tightly infrared burning carrier 14 in holding the intracavity through annular lid 16, and infrared burning carrier 14 is difficult for coming off from fire lid 10, and split type annular lid 16 and the easy installation of fire lid body 12 are dismantled from top to bottom in addition, conveniently change infrared burning carrier 14.

Specifically, in the case where the gas appliance is a gas cooker, the gas cooker further includes a housing, a panel, and a control structure, the panel is covered above the housing and provided with a mounting hole, the burner 100 is partially located in the housing and exposed from the mounting hole, and the control structure is provided on the panel and used for a user to control the gas cooker. In a specific embodiment, the control structure may include a knob structure, such that the control structure may be used to control the delivery of the gas to the interior of the burner 100, respectively, and the flow rate of the gas is adjusted by the control structure to control the amount of fire of the burner 100. Therefore, the gas cooker can be suitable for various working environments, such as steaming, boiling, baking and frying in cooking.

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 being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely 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.

The disclosure herein provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described herein. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a fire lid for the combustor, a serial communication port, fire lid is including fire lid body, infrared burning carrier and annular lid, fire lid body includes the roof and protruding locates first stair structure on the roof, annular lid is located first stair structure is last, the roof first stair structure with annular lid forms jointly and holds the chamber, infrared burning carrier locates the roof top, infrared burning carrier is located hold the intracavity and certainly the middle part of annular lid exposes.

2. The fire lid of claim 1 wherein the annular cover body is threadably engaged with the first step formation.

3. The fire cover according to claim 2, wherein the first step structure comprises a first step and a second step which are connected, the second step and the first step are distributed outwards and sequentially along a central axis of the fire cover, the annular cover body is provided with a convex edge, the first step is provided with an external thread, and the inner side of the convex edge is provided with an internal thread matched with the external thread.

4. The fire cover according to claim 1, wherein the fire cover body comprises an annular peripheral wall connected with the top wall, the annular peripheral wall and the top wall jointly form a gas mixing chamber, the annular peripheral wall is provided with fire holes communicated with the gas mixing chamber, the fire holes are inclined outwards relative to a central axis of the fire cover, and the top wall is provided with through holes communicated with the gas mixing chamber and the infrared combustion carrier.

5. The fire cover according to claim 4, wherein the annular peripheral wall is provided with a flame holding groove, the flame holding groove is positioned below the fire hole, and the flame holding groove is communicated with the fire hole and the gas mixing chamber.

6. The fire cover according to claim 4, wherein a buffer chamber is formed between the top wall and the infrared combustion carrier, the buffer chamber is communicated with the through hole, the gas mixing chamber is used for containing mixed gas of gas and air, and the fire cover is configured to enable the mixed gas to enter the buffer chamber from the gas mixing chamber through the through hole and form a backflow zone in the buffer chamber.

7. The fire cover of claim 4, wherein the lower end of the annular peripheral wall forms a second step structure.

8. The fire cover of claim 1, wherein the fire cover includes an annular fastener that connects and secures the infrared combustion carrier to the first stepped structure.

9. A burner comprising the fire cover of any one of claims 1-8.

10. A gas appliance comprising the burner of claim 9.