CN112178641A - Burner and electric appliance - Google Patents
Burner and electric appliance Download PDFInfo
- Publication number
- CN112178641A CN112178641A CN202011057498.7A CN202011057498A CN112178641A CN 112178641 A CN112178641 A CN 112178641A CN 202011057498 A CN202011057498 A CN 202011057498A CN 112178641 A CN112178641 A CN 112178641A
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- Prior art keywords
- hole
- flow
- mixing section
- fire
- burner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
- F23D14/045—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with a plurality of burner bars assembled together, e.g. in a grid-like arrangement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/007—Mixing tubes, air supply regulation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
The invention provides a burner and an electric appliance. The burner includes: fire hole plates; a fuel supply chamber for supplying fuel to the fire hole plate; and the flow stabilizing plate is arranged between the fire hole plate and the fuel supply cavity and is provided with at least one flow stabilizing hole, and the fuel from the fuel supply cavity flows to the fire hole plate through the flow stabilizing hole. The invention can adjust and balance the flow velocity of the fuel at each fire hole of the burner, so that the flow velocity of the fuel at each fire hole is more uniform, thereby improving the combustion effect.
Description
Technical Field
The invention relates to the technical field of burners, in particular to a burner and an electric appliance.
Background
The burner is a core component in heating equipment such as a water heater, an oven and the like. The burners in the related art are mainly of a pipe-shaped structure, that is: the fuel delivery passage of the burner presents a bend.
One of the disadvantages of the related art is that the presence of the bent section causes non-uniform fuel flow velocity at the fire hole outlets at different positions of the burner. This problem causes an uneven flame distribution of the burner.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems.
To this end, a first aspect of the invention provides a burner.
A second aspect of the invention provides an appliance.
To achieve the first aspect of the present invention, the technical solution of the present invention provides a burner, including: fire hole plates; a fuel supply chamber for supplying fuel to the fire hole plate; and the flow stabilizing plate is arranged between the fire hole plate and the fuel supply cavity and is provided with at least one flow stabilizing hole, and the fuel from the fuel supply cavity flows to the fire hole plate through the flow stabilizing hole.
The technical scheme ensures that the fuel entering the mixing section cannot flow out through the fire holes on the fire hole plate immediately, but enters the fire holes through the flow stabilizing holes after the flow stabilizing effect of the flow stabilizing plate. Therefore, the technical scheme can promote the fuel flow velocity at each position on the fire hole plate to be more uniform and consistent. By adopting the technical scheme, the flame stabilizer can ensure that the flame sprayed out from the fire hole plate is more uniformly distributed, and effectively avoids the inclination of the flame. Correspondingly, this technical scheme can make the flame temperature of each position of fire orifice plate more even to improve the even degree of heating of combustor from this.
In addition, the above technical solution of the present invention may further have the following additional technical features:
in the technical scheme, the fire hole plate and the flow stabilizing plate are connected with each other and form a flow stabilizing cavity in a closed mode.
The flow stabilizing cavity can further promote the uniformity of the fuel flow speed at each position of the fire hole plate, and particularly avoid the overhigh flow speed of the fuel close to the diffusion section.
In any one of the above technical solutions, the fire hole plate includes: at least one fire hole penetrating through the fire hole plate; wherein the total open area of the at least one calming hole is greater than or equal to the total open area of the at least one fire hole.
The technical scheme controls the opening area of the fire hole on the fire hole plate and the opening area of the steady flow hole on the steady flow plate. The sum of the open area of each steady flow hole on the steady flow plate is larger than or equal to the sum of the open area of each fire hole on the fire hole plate. From this, this technical scheme can guarantee the abundant flow and the supply of fuel, avoids fuel to pile up among the fuel supply chamber, and then guarantees the combustion effect and the degree of safety of combustor.
In any of the above technical solutions, the at least one fire hole includes: at least one first fire hole; the at least one second fire hole is distributed at intervals with the at least one first fire hole; wherein the open area of any one of the at least one first fire hole is smaller than the open area of any one of the at least one second fire hole.
This technical scheme sets up the trompil area in first fire hole for littleer, is changeed with the air mixing by first fire hole spun fuel, also changes in the burning, and from this, this technical scheme can be convenient for the combustor strike sparks.
In any of the above solutions, the fuel supply chamber includes: an injection section; the diffusion section is respectively communicated with the injection section and the mixing section; the extension direction of the mixing section extends from a position close to the diffusion section to a position far away from the diffusion section; wherein the flow stabilizer covers at least a portion of the mixing section.
The flow stabilizing plate of the technical scheme plays a role in stabilizing the flow of the fuel entering the mixing section, adjusts and limits the flow rate of the fuel at different positions in the mixing section, thereby ensuring the uniform flow rate of the fuel and ensuring the combustion efficiency of the combustor and the uniform degree of flame distribution and the uniform degree of heating at each position of the fire hole plate.
In any of the above technical solutions, the at least one flow stabilizing hole is distributed along the extending direction, and the opening area of each flow stabilizing hole in the at least one flow stabilizing hole changes along with the distribution position of each flow stabilizing hole.
The technical scheme is that the open area of the steady flow hole at each position above the steady flow plate is designed to be changed according to the position of the steady flow hole above the steady flow plate. Therefore, the flow velocities of the fuel with the opening area of each steady flow hole at each steady flow hole are matched with each other, and the flow velocity of the fuel is effectively controlled.
In any of the above technical solutions, the mixing section includes: a first mixing section joined to the diffuser section; the at least one flow stabilizing hole comprises at least one first flow stabilizing hole corresponding to the arrangement position of the first mixing section, and the opening area of each first flow stabilizing hole in the at least one first flow stabilizing hole is increased along the extending direction.
This technical scheme will set up the trompil area of the first steady flow hole that corresponds with the position that sets up of first mixed section and set up to increase gradually to the one end of keeping away from the diffuser section by the one end that is close to the diffuser section to the realization is to the adjustment of fuel velocity of flow.
In any of the above technical solutions, the mixing section further includes: a second mixing section joined to the first mixing section; the at least one flow stabilizing hole comprises at least one second flow stabilizing hole corresponding to the arrangement position of the second mixing section, and the total open area of the at least one second flow stabilizing hole in any unit area is larger than that of the at least one first flow stabilizing hole in any unit area.
The technical scheme can ensure that the fuel quantity sprayed to the fire hole on the fire hole plate through the second mixing section is slightly larger than the fuel quantity sprayed to the fire hole on the fire hole plate through the first mixing section, thereby effectively adjusting and controlling the shape of the flame and avoiding the inclination of the flame.
In any of the above solutions, the area of the opening of each second flow stabilizing hole in the at least one second flow stabilizing hole decreases along the extending direction, and increases again along the extending direction after decreasing.
The area of the opening of each second steady flow hole in the plurality of second steady flow holes is gradually reduced and then gradually increased along the direction close to the diffusion section towards the direction far away from the diffusion section, so that the aim of further avoiding the shape inclination of the flame is fulfilled.
In any of the above technical solutions, the mixing section further includes: the third mixing section is connected with one end of the second mixing section, which is far away from the first mixing section; and the at least one flow stabilizing hole comprises at least one third flow stabilizing hole corresponding to the arrangement position of the third mixing section, and the opening area of each third flow stabilizing hole in the at least one third flow stabilizing hole is reduced along the extension direction.
The fuel flow speed in the third flow stabilizing hole with the smaller opening area is higher. Therefore, the technical scheme can effectively avoid the reduction of flame far away from the diffusion section.
In any of the above technical solutions, a total open area of the at least one second stabilizing hole in any other unit area is larger than a total open area of the at least one third stabilizing hole in any other unit area.
The technical scheme can ensure that the fuel quantity sprayed to the fire hole on the fire hole plate through the second mixing section is slightly larger than the fuel quantity sprayed to the fire hole on the fire hole plate through the third mixing section, thereby effectively adjusting and controlling the shape of the flame and avoiding the inclination of the flame.
In any of the above embodiments, at least a portion of the fire aperture plate is raised away from the fuel supply chamber.
This technical scheme can be processed fire orifice plate for the roof ridge shape structure of middle part uplift to this makes and forms the steady flow chamber between fire orifice plate and the steady flow board.
In order to realize the second aspect of the invention, the technical scheme of the invention provides an electric appliance, which comprises the burner according to any technical scheme of the invention, wherein the burner is used for burning fuel to provide heat.
The electric appliance of the technical scheme comprises the burner of any technical scheme of the invention, so the electric appliance has the overall beneficial effects of the burner of any technical scheme of the invention.
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 view of a structure of a burner in the related art;
FIG. 2 is a schematic view of a flame shape of a burner in the related art;
FIG. 3 is a schematic structural view of a burner according to an embodiment of the present invention;
FIG. 4 is a schematic view of the direction of fuel flow within the combustor in accordance with an embodiment of the present invention;
fig. 5 is a schematic view of the flame shape of a burner according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
200': burner, 260': diffuser, 300': a flame.
Wherein, the correspondence between the reference numbers and the part names in fig. 3 to 5 is:
200: burner, 210: fire hole plate, 212: fire hole, 214: first fire hole, 216: second fire hole, 220: fuel supply chamber, 230: a flow stabilizer, 232: flow stabilizing hole, 234: first flow stabilizing hole, 236: second flow stabilizing hole, 238: third flow stabilizing hole, 240: flow stabilizing cavity, 250: injection section, 260: diffuser, 270: mixing section, 272: first mixing section, 274: second mixing section, 276: third mixing section, 300: a flame.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The burner is one of the core components in a gas heating device, for example, the burner can be applied to a gas water heater or a gas heating oven. The burner is provided with a fire hole and supplies fuel to the fire hole through a fuel supply chamber. The fuel at the fire hole mixes with the oxygen and burns, releasing heat.
The shape and structural design of the burner has a crucial effect on the combustion efficiency and heating performance of the gas heating device, even with slight dimensional changes. The burner generally has a plurality of fire holes, each of which is disposed above a fire hole plate.
One of the disadvantages of the related art burner 200 'applied to the vertical type oven is that the flow velocity distribution of the fuel in each fire hole of the burner 200' is not uniform. As shown in fig. 2, there is a problem in that the shape of the flame 300 ' of the burner 200 ' is inclined, and thus the burner 200 ' is not heated uniformly. The reason for this is that the diffuser section 260 ' of the burner 200 ' generally has a bent semicircular or arc-shaped structure, and the direction of the gas flow of combustible gas fuel, such as natural gas, coal gas, etc., is changed after passing through the diffuser section 260 '. Therefore, the burner 200 ' of the related art has a large fuel gas flow velocity at the fire hole near the diffuser section 260 ' and a small fuel gas flow velocity at the fire hole far from the diffuser section 260 '. Accordingly, the fire hole plate surface forms an inclined pressure surface and causes the flow velocity of the air flow at each fire hole to assume an inclined configuration. As shown in fig. 1, in order to correct and adjust the change of the shape of the flame 300 'caused by the arc-shaped diffusion section 260' of the burner 200 ', the local position of the fuel supply cavity of the burner 200' may be set to be narrow, however, the above shape design may result in an excessively long overall length of the burner, which is difficult to be applied to products with strict size restrictions, such as a gas-fired oven. For this reason, embodiments of the present invention provide the following burner 200 and electric appliance, which aim to improve the degree of uniformity of the fuel flow rate and thus improve the combustion efficiency and effect of the burner 200. The burner 200 and the electric appliance according to some embodiments of the present invention will be described with reference to fig. 3 to 5.
Example 1:
as shown in fig. 3, the present embodiment provides a burner 200 including: a fire orifice plate 210, a fuel supply chamber 220, and a stabilizer plate 230. The fuel supply chamber 220 is used to supply fuel to the fire hole plate 210. The flow stabilizer 230 is disposed between the fire hole plate 210 and the fuel supply chamber 220, and the flow stabilizer 230 is provided with at least one flow stabilizer hole 232 through which the fuel from the fuel supply chamber 220 flows toward the fire hole plate 210.
The burner 200 of the present embodiment can be applied to a gas heating apparatus such as a gas oven or a gas water heater, and the fuel supply chamber 220 has a shape similar to a tobacco pipe. Specifically, as shown in fig. 4, the fuel supply chamber 220 includes: an induction section 250, a diffuser section 260, and a mixing section 270. The eductor section 250 of the fuel supply cavity 220 communicates with the nozzle such that fuel from the nozzle enters the fuel supply cavity 220. Further, the fuel flows from the injection section 250 to the diffusion section 260 in the fuel supply chamber 220, and flows to the mixing section 270 through the diffusion section 260, and the fuel of the mixing section 270 passes through the steady flow holes 232 on the steady flow plate 230, and finally reaches the fire hole plate 210 and is ignited.
The fire hole plate 210 has an elongated configuration that covers the mixing section 270 of the fuel supply chamber 220. The fire hole plate 210 is provided thereon with fire holes 212 arranged along the extending direction of the mixing section 270. Fuel exits the burner 200 via the fire holes 212.
The diffuser section 260 has a circular arc-shaped bent structure, which causes a change in the flow direction of the fuel in the fuel supply chamber 220. Specifically, the fuel flow velocity is faster within the mixing section 270 near the diffuser section 260 and slower within the mixing section 270 away from the diffuser section 260. To provide regulated control of the fuel flow rate, the present embodiment provides a flow stabilizer 230 between the fuel supply cavity 220 and the fire hole plate 210.
The stabilizer plate 230 is shaped and sized to fit the fire hole plate 210 and the two may be fastened to each other by a snap or fastener. There may be a certain gap between the current stabilizer 230 and the fire hole plate 210. The stabilizer plate 230 functions to promote a more uniform flow velocity of the fuel. The stabilizer plate 230 can achieve the above-described effect because at least one stabilizer hole 232 is provided thereon, and the flow velocity of the fuel is influenced and limited by the stabilizer hole 232. Thus, the present embodiment prevents the fuel entering the mixing section 270 from immediately flowing out through the fire holes 212 above the fire hole plate 210, but enters the fire holes 212 through the flow stabilizing holes 232 after the flow stabilizing effect of the flow stabilizing plate 230. Thus, the present embodiment can promote more uniform and consistent fuel flow rates at various locations over the fire hole plate 210. As shown in fig. 5, the flow stabilizer 230 of the present embodiment can make the distribution of the flames 300 sprayed from the fire hole plate 210 more uniform, and effectively prevent the flames 300 from tilting. Accordingly, the present embodiment may make the flame temperature more uniform at each position of the fire hole plate 210, and thus improve the heating uniformity of the burner 200.
The shape of the at least one flow stabilizing hole 232 includes one or a combination of: circular, quasi-circular, annular, semicircular, polygonal and strip-shaped. Specifically, the flow stabilizer 230 of the present embodiment has a strip-shaped structure, and a plurality of flow stabilizing holes 232 are sequentially arranged on the flow stabilizer 230. The shape of the stabilizing hole 232 may be circular, elliptical, semicircular, polygonal, strip-shaped, and may even be a shaped structure such as a star. The number of orifices 232 and the distance between each orifice 232 can be selected and adjusted by one skilled in the art according to the actual needs. Wherein, the flow stabilizing holes 232 may be equally or unequally spaced. The orifices 232 may be spaced apart from one another, or two or more orifices 232 may be in communication with one another.
Example 2:
as shown in fig. 3, the present embodiment provides a burner 200, and in addition to the technical features of the above embodiment 1, the present embodiment further includes the following technical features:
the orifice plate 210 and the stabilizer plate 230 are connected to each other and enclose a stabilizer chamber 240.
In this embodiment, the fire hole plate 210 and the flow stabilizer plate 230 can be detachably connected by a fastener, a hook, a screw, or the like, or can be fixedly connected by bonding or welding, or the like. Wherein the fire hole plate 210 and the flow stabilizer plate 230 have a flat plate-like structure, respectively, and a certain distance is provided between the fire hole plate 210 and the flow stabilizer plate 230, thereby forming a flow stabilizer chamber 240 between the fire hole plate 210 and the flow stabilizer plate 230.
The conditioned fuel passing through the flow stabilizing holes 232 is further diffused by flow after entering the flow stabilizing chamber 240, rather than being directly ejected from the individual fire holes 212 above the fire hole plate 210. Thus, the flow stabilization chamber 240 may further promote a degree of uniformity in the fuel flow rate at various locations of the fire orifice plate 210, and in particular, avoid excessive fuel flow rates proximate the diffuser section 260.
Example 3:
as shown in fig. 3, the present embodiment provides a burner 200, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features:
the fire hole plate 210 includes: at least one fire hole 212. At least one fire aperture 212 extends through the fire aperture plate 210. Wherein the total open area of the at least one calming hole 232 is greater than or equal to the total open area of the at least one fire hole 212.
The fire holes 212 function to allow fuel to pass therethrough and be ejected from above the fire hole plate 210. Wherein, the fire hole plate 210 has a strip-shaped structure, and a plurality of fire hole plates 210 are arranged in order at the fire hole plate 210. The shape, number, distance between the fire holes 212, and size of the fire holes 212 may be selected and adjusted by those skilled in the art according to actual needs.
The present embodiment controls the opening area of the fire holes 212 on the fire hole plate 210 and the opening area of the stabilizing holes 232 on the stabilizing plate 230. Wherein the sum of the open areas of the respective stabilizer holes 232 above the stabilizer plate 230 is greater than or equal to the sum of the open areas of the respective fire holes 212 above the fire hole plate 210. Therefore, the present embodiment can ensure sufficient flow and supply of fuel, avoid fuel accumulation in the fuel supply cavity 220, and further ensure the combustion effect and safety of the burner 200.
Example 4:
as shown in fig. 3, the present embodiment provides a burner 200, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features:
the at least one fire hole 212 includes: at least one first fire aperture 214 and at least one second fire aperture 216. The at least one second fire hole 216 is spaced apart from the at least one first fire hole 214. Wherein the open area of any one of the first fire holes 214 of the at least one first fire hole 214 is smaller than the open area of any one of the second fire holes 216 of the at least one second fire hole 216.
The fire holes 212 of the present embodiment include a first fire hole 214 and a second fire hole 216, wherein the first fire hole 214 is a firing hole and the second fire hole 216 is a combustion hole. The number of the first fire holes 214 and the second fire holes 216 may be a plurality, respectively, and the first fire holes 214 and the second fire holes 216 are spaced apart from each other over the fire hole plate 210.
In the present embodiment, the opening area of the first fire holes 214 is set to be small, and the fuel sprayed from the first fire holes 214 is more easily mixed with air and is more easily combusted, so that the present embodiment can facilitate ignition of the burner 200.
For example, the present embodiment may arrange the fire hole plate 210 in a raised ridge-shaped structure, and arrange two rows of the first fire holes 214 in parallel at the ridge position in the middle of the fire hole plate 210. Furthermore, in the present embodiment, a plurality of second fire holes 216 may be respectively disposed along the length direction of the fire hole plate 210 at positions on both sides of the fire hole plate 210 with respect to the ridge position.
Again for example, the present embodiment may provide the fire hole plate 210 as a flat plate structure, and provide the first fire holes 214 and the second fire holes 216 spaced apart from each other at various positions along the length direction of the fire hole plate 210.
The shape and number of the first fire holes 214 and the second fire holes 216 may be selected and adjusted by those skilled in the art according to actual needs.
Example 5:
as shown in fig. 3 and 4, the present embodiment provides a burner 200, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features:
the fuel supply chamber 220 includes: an induction section 250, a diffuser section 260, and a mixing section 270. The diffuser section 260 communicates with the ejector section 250 and the mixing section 270, respectively. The mixing section 270 extends from a location proximate to the diffuser section 260 to a location distal to the diffuser section 260. Wherein the stabilizer plate 230 covers at least a portion of the mixing section 270.
In this embodiment, the injector section 250 of the fuel supply chamber 220 is in communication with the nozzle of the burner 200, the gaseous fuel from the nozzle flows through the injector section 250 to the diffuser section 260 having the circular arc-shaped bent structure, and the mixing section 270 is in communication with and joined to the diffuser section 260 and extends away from the diffuser section 260. The stabilizer plate 230 covers the upper opening area of the mixing section 270 and is shaped to fit the upper opening area of the mixing section 270.
The flow stabilizing plate 230 of this embodiment provides a flow stabilizing effect for the fuel entering the mixing section 270, and adjusts and limits the flow rate of the fuel at different positions in the mixing section 270, thereby ensuring uniform flow rate of the fuel, and ensuring the combustion efficiency of the burner 200 and the uniformity of flame distribution and heating at each position of the fire hole plate 210.
Example 6:
as shown in fig. 3, the present embodiment provides a burner 200, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features:
the at least one stabilizing hole 232 is distributed along the extending direction, and the opening area of each stabilizing hole 232 in the at least one stabilizing hole 232 is changed along with the distribution position of each stabilizing hole 232.
The present embodiment designs the opening area of the flow stabilizer holes 232 at various positions above the flow stabilizer plate 230 to vary according to their positions above the flow stabilizer plate 230. Therefore, the flow velocities of the fuels with the opening areas of the steady flow holes 232 at the steady flow holes 232 are matched with each other, and the flow velocities of the fuels are effectively controlled.
Example 7:
as shown in fig. 3, the present embodiment provides a burner 200, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features:
the mixing section 270 includes: a first mixing section 272. The first mixing section 272 is joined to the diffuser section 260. Wherein the at least one flow stabilizing hole 232 includes at least one first flow stabilizing hole 234 corresponding to the position of the first mixing section 272, and the area of each first flow stabilizing hole 234 of the at least one first flow stabilizing hole 234 increases in the extending direction.
In this embodiment, the first mixing section 272 is the portion of the mixing section 270 adjacent to the diffuser section 260 and joined to the diffuser section 260. The length of the first mixing section 272 may be selected and adjusted by one skilled in the art based on the overall length of the mixing section 270 and the size of the combustor 200.
For example, the embodiment may determine the first mixing section 272 as a portion of the mixing section 270 located at an end of the mixing section 270 near the diffuser section 260 and having a length of one fifth or one fourth of the overall length of the mixing section 270, depending on the overall length of the mixing section 270.
For example, the embodiment may determine the portion of the mixing section 270 near one end of the diffuser section 260 corresponding to 6 to 7 fire holes extending on the fire hole plate 210 as the first mixing section 272 according to the number of the fire holes 212 of the fire hole plate 210 above the mixing section 270.
The flow direction of the fuel in the first mixing section 272 changes to a greater extent and the flow rate thereof is faster, and therefore, the present embodiment sets the opening area of the first flow-stabilizing hole 234 corresponding to the setting position of the first mixing section 272 to gradually increase from the end close to the diffuser section 260 to the end far from the diffuser section 260 to achieve the adjustment of the flow rate of the fuel.
In this embodiment, a single row of flow stabilizing holes 232 arranged in sequence may be disposed at the position of the flow stabilizing plate 230 corresponding to the first mixing section 272, and the opening area of each flow stabilizing hole 232 is gradually increased. In this embodiment, a plurality of flow stabilizing holes 232 with the same opening area may be disposed at the position of the flow stabilizing plate 230 corresponding to the first mixing section 272. The flow stabilizing holes 232 are arranged in a small number at the end close to the diffuser section 260, and the flow stabilizing holes 232 are arranged in a large number at the end far from the diffuser section 260.
Example 8:
as shown in fig. 3, the present embodiment provides a burner 200, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features:
the mixing section 270 further comprises: a second mixing section 274. The second mixing section 274 is engaged with the first mixing section 272. Wherein the at least one flow-stabilizing hole 232 includes at least one second flow-stabilizing hole 236 corresponding to the location of the second mixing section 274, the total open area of the at least one second flow-stabilizing hole 236 per unit area being greater than the total open area of the at least one first flow-stabilizing hole 234 per unit area.
The second mixing section 274 of this embodiment is located in the middle of the mixing section 270 and between the first mixing section 272 and the third mixing section 276. A plurality of second flow stabilizing holes 236 are provided at positions of the flow stabilizing plate 230 corresponding to the second mixing section 274. In which the shape and size of the openings of the respective second stabilizing holes 236 may be adjusted by one skilled in the art, but it is desirable to ensure that the total open area of the second stabilizing holes 236 in the area of the same area above the fire hole plate 210 is greater than the total open area of the first stabilizing holes 234. Therefore, the present embodiment can ensure that the amount of fuel sprayed to the fire holes 212 on the fire hole plate 210 through the second mixing section 274 is slightly larger than the amount of fuel sprayed to the fire holes 212 on the fire hole plate 210 through the first mixing section 272, and thus the shape of the flame 300 can be effectively adjusted and controlled, and the flame 300 can be prevented from being inclined.
The length of the second mixing section 274 may be selected and adjusted by one skilled in the art based on the overall length of the mixing section 270 and the size and type of the combustor 200. For example, the present embodiment may determine the middle portion having a length of one-half or one-third of the overall length of the mixing section 270 as the second mixing section 274, according to the overall length of the mixing section 270.
Example 9:
as shown in fig. 3, the present embodiment provides a burner 200, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features:
the open area of each of the at least one second stabilizing hole 236 decreases in the direction of extension and increases again in the direction of extension after decreasing.
The present embodiment controls the open area of the plurality of second baffle holes 236 in the baffle plate 230 corresponding to the position of the second mixing section 274. The opening area of each of the second flow-stabilizing holes 236 in the plurality of second flow-stabilizing holes 236 gradually decreases and then gradually increases along the direction close to the diffuser section 260 toward the direction away from the diffuser section 260, so as to further avoid the shape inclination of the flame 300.
Example 10:
as shown in fig. 3, the present embodiment provides a burner 200, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features:
the mixing section 270 further comprises: a third mixing section 276. The third mixing section 276 engages an end of the second mixing section 274 distal from the first mixing section 272. Wherein the at least one flow-stabilizing hole 232 includes at least one third flow-stabilizing hole 238 corresponding to the disposed position of the third mixing section 276, and an opening area of each third flow-stabilizing hole 238 of the at least one third flow-stabilizing hole 238 decreases in the extending direction.
The third mixing section 276 of this embodiment is located at a rear position of the mixing section 270. Of the first, second, and third mixing sections 272, 274, 276, the third mixing section 276 is relatively farthest from the diffuser section 260. The present embodiment sets the opening area of the plurality of third flow stabilizing holes 238 on the flow stabilizing plate 230 corresponding to the position of the third mixing section 276 to be gradually decreased. Wherein the open area of the third flow stabilizing hole 238 is smaller the further away from the diffuser section 260. The fuel flow rate in the third flow stabilizing hole 238 having a smaller opening area is higher. Therefore, the present embodiment can effectively prevent the flame 300 from being lowered away from the diffuser section 260.
The length of the third mixing section 276 may be selected and adjusted by one skilled in the art based on the overall length of the mixing section 270 and the size and type of the combustor 200.
For example, the embodiment may determine the first mixing section 272 as a portion of the mixing section 270 located at the end of the mixing section 270 away from the diffuser section 260 and having a length of one fifth or one fourth of the overall length of the mixing section 270, depending on the overall length of the mixing section 270.
For example, the third mixing section 276 is defined as the portion of the mixing section 270 located at the end of the mixing section 270 away from the diffuser section 260 and corresponding to 6 to 7 fire holes extending from the fire hole plate 210 according to the number of the fire holes 212 of the fire hole plate 210 above the mixing section 270.
Example 11:
as shown in fig. 3, the present embodiment provides a burner 200, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features:
the total open area of the at least one second flow-stabilizing hole 236 per unit area is greater than the total open area of the at least one third flow-stabilizing hole 238 per unit area.
In which the shape and size of the openings of the respective third stabilizing holes 238 can be adjusted by one skilled in the art, but it is desirable to ensure that the total open area of the second stabilizing holes 236 in the area of the same area above the fire hole plate 210 is greater than the total open area of the third stabilizing holes 238. Therefore, the present embodiment can ensure that the amount of fuel sprayed to the fire holes 212 on the fire hole plate 210 through the second mixing section 274 is slightly larger than the amount of fuel sprayed to the fire holes 212 on the fire hole plate 210 through the third mixing section 276, and thus the shape of the flame 300 can be effectively adjusted and controlled to prevent the flame 300 from tilting.
Example 12:
as shown in fig. 3, the present embodiment provides a burner 200, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features:
at least a portion of the fire aperture plate 210 bulges away from the fuel supply cavity 220.
Specifically, the present embodiment may process the fire hole plate 210 into a roof ridge structure with an upward-raised middle portion, so that the flow stabilizing cavity 240 is formed between the fire hole plate 210 and the flow stabilizing plate 230.
In addition, in this embodiment, a raised edge is also disposed on the edge of the flow stabilizer 230, and the raised edge of the flow stabilizer 230 is connected to the edge of the fire hole plate 210, so that a gap is formed between the fire hole plate 210 and the flow stabilizer 230, and a flow stabilizer cavity 240 is formed.
Example 13:
the present embodiment provides a burner 200, which includes: a fire orifice plate 210, a fuel supply chamber 220, and a stabilizer plate 230. Wherein, a steady flow cavity 240 is arranged between the fire hole plate 210 and the steady flow plate 230. The fuel supply cavity 220 includes an induction section 250, a diffuser section 260, and a mixing section 270. The eductor section 250 communicates with the nozzle of the burner 200. The diffusion section 260 is connected with the injection section 250 and has a circular arc-shaped bent structure. The mixing section 270 engages the diffuser section 260.
The flow stabilizer 230 of this embodiment provides a flow stabilization of the fuel entering the mixing section 270. Specifically, the shape of the flow stabilizer 230 is adapted to the shape of the fire hole plate 210. The mixing section 270 extends from an end proximate the diverging section 260 to an end distal the diverging section 260 and specifically includes a first mixing section 272 proximate the diverging section 260, a third mixing section 276 distal the diverging section 260, and a second mixing section 274 located between the first mixing section 272 and the third mixing section 276.
The stabilizer holes 232 over the stabilizer plate 230 are sequentially arranged along the extending direction of the mixing section 270, wherein the size of the stabilizer hole 232 corresponding to the position of the first mixing section 272 and the size of the stabilizer hole 232 corresponding to the position of the third mixing section 276 are relatively small, and the size of the stabilizer hole 232 corresponding to the position of the second mixing section 274 is relatively large. In addition, the size of the flow stabilizing holes 232 above the flow stabilizing plate 230 gradually changes along the extension direction of the mixing section 270. The size of the orifice 232 above the flow stabilizer 230 gradually increases, then gradually decreases, and gradually increases again, and finally gradually decreases from the end of the mixing section 270 close to the diffuser section 260 to the end far from the diffuser section 260.
The flow stabilizer 230 of the present embodiment can make the distribution of the flame 300 sprayed from the fire hole plate 210 more uniform, and effectively prevent the flame 300 from tilting. In addition, the flow stabilization chamber 240 may further promote uniformity in fuel flow rate at various locations of the fire orifice plate 210, and in particular, avoid excessive fuel flow rates proximate the diffuser section 260. Also, the present embodiment adjusts and limits the flow rate of the fuel at different positions in the mixing section 270, thereby ensuring the uniform flow rate of the fuel, and ensuring the combustion efficiency of the burner 200 and the uniform degree of flame distribution and heating at each position of the fire hole plate 210.
Example 14:
this embodiment provides an appliance comprising a burner 200 according to any of the embodiments of the invention, the burner 200 being arranged to burn fuel to provide heat. The electric appliance of the embodiment comprises one of the following components: gas heater, gas oven and gas heater.
In summary, the embodiment of the invention has the following beneficial effects:
1. embodiments of the present invention provide that fuel entering the fuel supply chamber 220 does not immediately exit through the fire holes 212 above the fire hole plate 210, but rather enters the fire holes 212 through the flow stabilizing holes 232 after the flow stabilizing action of the flow stabilizing plate 230. Thus, embodiments of the present invention can promote a more uniform and consistent fuel flow rate at various locations over the fire orifice plate 210. By adopting the flow stabilizer 230 of the present embodiment, the distribution of the flame 300 sprayed from the fire hole plate 210 is more uniform, and the flame 300 is effectively prevented from tilting.
2. The embodiment of the present invention forms the flow stabilizing cavity 240 between the fire hole plate 210 and the flow stabilizing plate 230, and the flow stabilizing cavity 240 may further promote uniformity of the fuel flow rate at various positions of the fire hole plate 210, and particularly avoid an excessively high fuel flow rate near the diffuser section 260.
3. The embodiment of the present invention can ensure sufficient flow and supply of fuel, and ensure the combustion effect and safety of the burner 200.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., 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 invention. In this specification, the schematic representations of the terms used above 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.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A burner, comprising:
fire hole plates;
a fuel supply chamber for supplying fuel to the fire hole plate;
and the flow stabilizing plate is arranged between the fire hole plate and the fuel supply cavity and is provided with at least one flow stabilizing hole, and the fuel from the fuel supply cavity flows to the fire hole plate through the flow stabilizing hole.
2. The burner of claim 1, wherein the fire orifice plate and the flow stabilizer plate are connected to one another and enclose a flow stabilizer chamber.
3. The burner of claim 1, wherein the fire aperture plate comprises:
at least one fire hole penetrating through the fire hole plate;
wherein the total open area of the at least one calming hole is greater than or equal to the total open area of the at least one fire hole.
4. The burner of claim 3, wherein the at least one fire hole comprises:
at least one first fire hole;
the at least one second fire hole is distributed at intervals with the at least one first fire hole;
wherein the open area of any one of the at least one first fire hole is smaller than the open area of any one of the at least one second fire hole.
5. The burner according to any one of claims 1 to 4, wherein the fuel supply chamber comprises:
an injection section;
the diffusion section is respectively communicated with the injection section and the mixing section;
the extension direction of the mixing section is from a position close to the diffusion section to a position far away from the diffusion section;
wherein the flow stabilizer covers at least a portion of the mixing section.
6. The burner of claim 5, wherein the at least one flow stabilizer hole is distributed along the extension direction, and an opening area of each flow stabilizer hole of the at least one flow stabilizer hole varies following a distribution position of each flow stabilizer hole.
7. The combustor of claim 5, wherein the mixing section comprises:
a first mixing section engaged with the diffuser section;
wherein the at least one flow stabilizing hole comprises at least one first flow stabilizing hole corresponding to the setting position of the first mixing section, and the opening area of each first flow stabilizing hole in the at least one first flow stabilizing hole is increased along the extending direction.
8. The combustor of claim 7, wherein the mixing section further comprises:
a second mixing section joined to the first mixing section;
the at least one flow stabilizing hole comprises at least one second flow stabilizing hole corresponding to the setting position of the second mixing section, and the total opening area of the at least one second flow stabilizing hole in any unit area is larger than that of the at least one first flow stabilizing hole in any unit area.
9. The burner of claim 8, wherein an open area of each of the at least one second flow-stabilizing hole decreases in the direction of extension and increases again in the direction of extension after decreasing.
10. The combustor of claim 8, wherein the mixing section further comprises:
a third mixing section connected with one end of the second mixing section far away from the first mixing section;
wherein the at least one flow stabilizing hole comprises at least one third flow stabilizing hole corresponding to the setting position of the third mixing section, and the opening area of each third flow stabilizing hole in the at least one third flow stabilizing hole is reduced along the extending direction.
11. The burner of claim 10, wherein a total open area of the at least one second swirl hole per unit area is greater than a total open area of the at least one third swirl hole per unit area.
12. A burner according to any of claims 1 to 4, wherein at least part of the fire aperture plate is raised away from the fuel supply chamber.
13. An electrical appliance comprising a burner as claimed in any one of claims 1 to 12 for combusting fuel to provide heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011057498.7A CN112178641B (en) | 2020-09-30 | 2020-09-30 | Burner and electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011057498.7A CN112178641B (en) | 2020-09-30 | 2020-09-30 | Burner and electric appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112178641A true CN112178641A (en) | 2021-01-05 |
| CN112178641B CN112178641B (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011057498.7A Active CN112178641B (en) | 2020-09-30 | 2020-09-30 | Burner and electric appliance |
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| Country | Link |
|---|---|
| CN (1) | CN112178641B (en) |
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| CN203273902U (en) * | 2013-05-24 | 2013-11-06 | 青岛兴邦烤箱有限公司 | Economical burner for oven |
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| CN203771402U (en) * | 2014-03-12 | 2014-08-13 | 宁波方太厨具有限公司 | Dense-dilute burner |
| CN204693407U (en) * | 2015-05-11 | 2015-10-07 | 芜湖美的厨卫电器制造有限公司 | Burner and gas heater |
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| CN106801869A (en) * | 2017-03-24 | 2017-06-06 | 中山市思源电器有限公司 | A kind of low NO |
| CN207394838U (en) * | 2017-11-10 | 2018-05-22 | 艾欧史密斯(中国)热水器有限公司 | Fire row, burner or gas heater |
| CN108916872A (en) * | 2018-07-20 | 2018-11-30 | 广东万和新电气股份有限公司 | A kind of gas heater and its burner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203273902U (en) * | 2013-05-24 | 2013-11-06 | 青岛兴邦烤箱有限公司 | Economical burner for oven |
| CN203501178U (en) * | 2013-10-10 | 2014-03-26 | 青岛兴邦电子电器有限公司 | Combustor used for gas oven |
| CN203771402U (en) * | 2014-03-12 | 2014-08-13 | 宁波方太厨具有限公司 | Dense-dilute burner |
| CN204693407U (en) * | 2015-05-11 | 2015-10-07 | 芜湖美的厨卫电器制造有限公司 | Burner and gas heater |
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| Publication number | Publication date |
|---|---|
| CN112178641B (en) | 2022-12-06 |
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