CN114688534A - Atmospheric type sectional burner and water heating equipment - Google Patents

Abstract

The invention relates to an atmospheric sectional burner and hot water equipment, wherein in the using process, gas is sprayed out through a nozzle, and peripheral air is sucked and enters an ejector to be mixed; then the mixture is injected into the injection port by the injector and flows into the mixing tank. The gas entering the mixing tank is mixed again, so that the gas and the air are mixed fully, and the uniformity of the mixed gas is improved. After mixing, the gas flows into the flow equalizing cavity through the flow equalizing hole and then flows to the fire hole from the flow equalizing cavity, so that the mixed gas flows out of the surface of the burner body for ignition. Because this atmospheric type segmentation combustor adds the current equalizer between combustor ware and mixing tank for the mist passes through the mixing action in mixing tank and the chamber that flow equalizes in proper order before flowing out the fire hole, makes gas and air intensive mixing, guarantees that the mixed gas composition remains the homogeneity throughout in the combustion process, thereby makes flame stable combustion, greatly promotes atmospheric type segmentation combustor's combustion performance.

Description

Atmospheric type sectional burner and water heating equipment

Technical Field

The invention relates to the technical field of hot water equipment, in particular to an atmospheric type sectional burner and hot water equipment.

Background

The atmospheric burners are classified into diffusion type atmospheric burners, atmospheric burners and completely premixed atmospheric burners according to the primary air coefficient. The atmospheric burner is a part of air premixing equipment, and has the characteristics of short flame, strong firepower, high combustion temperature, capability of combusting gas with different properties and the like, so that the atmospheric burner is the mainstream at present.

The traditional atmospheric burner is assembled by an atmospheric burner shell, a plurality of atmospheric burner single sheets and fixing parts, and different load requirements are combined by using different quantities of the atmospheric burner single sheets. However, the traditional structure is complex, the production process is more, and the application of the single atmospheric sectional burner in cylindrical or cylindrical hot water equipment is difficult due to the structure of the single atmospheric sectional burner. Because the traditional combustor is limited by design elements such as structure, service environment and cost, the problem of uneven mixing of gas and air easily occurs, the combustion stability of the combustor is influenced, and the combustion characteristic and the use experience of users are influenced.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide an atmospheric type sectional burner which can effectively ensure the full mixing between gas and air, improve the mixing uniformity of mixed gas and improve the combustion performance.

The second technical problem to be solved by the present invention is to provide a water heating apparatus, which can effectively ensure sufficient mixing between gas and air, improve the mixing uniformity of the mixed gas, and improve the combustion performance.

The first technical problem is solved by the following technical scheme:

an atmospheric staged burner, the atmospheric staged burner comprising: an ejector; the base is provided with at least two mixing tanks and a first air flow channel at intervals, the tank bottom of each mixing tank is provided with an injection port, the injection ports are communicated with the injectors, and the first air flow channel is used for introducing secondary air; the combustion assembly, the combustion assembly includes combustor body and current equalizer, the current equalizer is installed on the base, just the current equalizer covers the notch of mixing tank, the combustor body is installed on the current equalizer, and with be formed with the current equalizing chamber between the current equalizer, be equipped with the flow equalizing hole on the current equalizer, the flow equalizing chamber passes through the flow equalizing hole with the mixing tank intercommunication, be equipped with on the combustor body with the fire hole of flow equalizing chamber intercommunication.

Compared with the background technology, the atmospheric sectional burner of the invention has the following beneficial effects: in the using process, the fuel gas is sprayed out through the nozzle, and peripheral air is sucked and enters the ejector to be mixed; then the mixture is injected into the injection port by the injector and flows into the mixing tank. The gas entering the mixing tank is mixed again, so that the gas and the air are mixed fully, and the uniformity of the mixed gas is improved. After mixing, the gas flows into the flow equalizing cavity through the flow equalizing hole and then flows to the fire hole from the flow equalizing cavity, so that the mixed gas flows out of the surface of the burner body for ignition. This atmosphere formula staged combustion ware adds the flow equalizer between combustor ware and mixing tank for gas mixture passes through the mixing action in mixing tank and the chamber that flow equalizes in proper order before the outflowing fire hole, makes gas and air intensive mixing, guarantees among the combustion process gas mixture composition and remains the homogeneity throughout, thereby makes flame stable combustion, greatly promotes atmosphere formula staged combustion ware's combustion performance. In addition, when the fuel gas is introduced, the secondary air flows to the surface of the burner body from the first air flow channel, so that the mixed gas is fully combusted under the participation of the secondary air, and the combustion performance of the atmospheric type sectional burner is effectively improved.

In one embodiment, the flow equalizer comprises a flow equalizing plate and a surrounding plate, the surrounding plate is arranged on the flow equalizing plate, the surrounding plate is arranged on the base, the flow equalizing cavity is formed among the surrounding plate, the flow equalizing plate and the burner body, the flow equalizing plate is arranged in a concave mode along the direction away from the inner side of the mixing tank, and the flow equalizing hole is formed in the flow equalizing plate.

In one embodiment, the flow equalizing plate comprises a first flow equalizing section, a second flow equalizing section and a connecting section connected between the first flow equalizing section and the second flow equalizing section, the first flow equalizing section, the connecting section and the second flow equalizing section are sequentially distributed along the radial direction of the base, the first flow equalizing section and the second flow equalizing section are arranged at an included angle relative to the connecting section, and a distance D is formed between the first flow equalizing section and the second flow equalizing section₁The end that is close to the linkage segment from the first section of flow equalizing to the first section of flow equalizing is close to the one end of bounding wall is the increase trend, in first section of flow equalizing, the second section of flow equalizing and the linkage segment, be equipped with on at least one the flow equalizing hole.

In one embodiment, the connecting section is arranged in the mixing tank towards the injection port, the first flow equalizing section, the second flow equalizing section and the connecting section are provided with the flow equalizing holes, and the distribution density of the flow equalizing holes in the first flow equalizing section and the distribution density of the flow equalizing holes in the second flow equalizing section are greater than the distribution density of the flow equalizing holes in the connecting section.

In one embodiment, the first flow equalizing section is closer to the center of the base relative to the second flow equalizing section, and the included angle theta between the first flow equalizing section and the connecting section₁Is larger than the included angle theta between the second current equalizing section and the connecting section₂。

In one embodiment, the enclosing plate comprises a first enclosing edge and a second enclosing edge, the first enclosing edge and the second enclosing edge are arranged along the radial direction of the base, and the distance D is formed between the first enclosing edge and the second enclosing edge₂The trend is increasing from the one end that the bounding wall is close to the base center to the one end that the bounding wall is close to the base edge.

In one embodiment, the flow equalizer is provided with a folded edge, the burner body is provided with a folded edge, and when the burner body is arranged on the flow equalizer, the folded edge can be wrapped by the folded edge after being bent.

In one embodiment, the burner body is provided with a first fixing portion, the first fixing portion is provided with a first fixing hole, the current equalizer is provided with a second fixing portion, the second fixing portion is provided with a second fixing hole, and the base is provided with a third fixing hole opposite to the first fixing hole and the second fixing hole.

In one embodiment, a second air flow channel is provided on the base, and the second air flow channel is located between the edge of the base and the mixing tank.

In one embodiment, the atmospheric staged burner further includes a seal disposed between the burner body and the base.

In one embodiment, the atmospheric staged burner further comprises an ignition assembly, a mounting hole is formed in the base, more than two mixing grooves are arranged at intervals around the periphery of the mounting hole, and the ignition assembly is located in the mounting hole.

In one embodiment, the ejector is arranged perpendicular to the surface of the base.

In one embodiment, the cross section of the mixing tank taken in a plane perpendicular to the depth direction of the mixing tank increases from the bottom of the mixing tank to the mouth of the mixing tank.

In one embodiment, the groove wall of the mixing groove comprises a first side wall and a second side wall which are oppositely arranged, the first side wall and the second side wall are both arranged along the radial direction of the base, and the distance D is between the first side wall and the second side wall₃The direction from one end of the mixing tank close to the center of the base to one end of the mixing tank close to the edge of the base is in an increasing trend.

The second technical problem is solved by the following technical solutions:

a water heating appliance comprising an atmospheric staging burner as claimed in any preceding claim.

Compared with the background technology, the water heating equipment of the invention has the following beneficial effects: the atmospheric sectional burner is adopted, and in the using process, gas is sprayed out through the nozzle, and peripheral air is sucked in an entrainment manner and enters the ejector to be mixed; then the mixture is injected into the injection port by the injector and flows into the mixing tank. The gas entering the mixing tank is mixed again, so that the gas and the air are mixed fully, and the uniformity of the mixed gas is improved. After mixing, the gas flows into the flow equalizing cavity through the flow equalizing hole and then flows to the fire hole from the flow equalizing cavity, so that the mixed gas flows out of the surface of the burner body for ignition. This atmosphere formula staged combustion ware adds the flow equalizer between combustor ware and mixing tank for the mist passes through the mixing action in mixing tank and the chamber of flow equalizing in proper order before the outflowing fire hole, makes gas and air intensive mixing, guarantees among the combustion process that the mist composition remains the homogeneity throughout, thereby makes the stable combustion of flame, greatly promotes atmosphere formula staged combustion ware's combustion performance. In addition, when the fuel gas is introduced, the secondary air flows to the surface of the burner body from the first air flow channel, so that the mixed gas is fully combusted under the participation of the secondary air, and the combustion performance of the atmospheric type sectional burner is effectively improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of an atmospheric staged burner according to an embodiment;

FIG. 2 is an exploded view of an atmospheric staged burner according to an embodiment;

FIG. 3 is a sectional view of an atmospheric staged burner according to an embodiment;

FIG. 4 is a first diagram illustrating a first exemplary embodiment of a base structure;

FIG. 5 is a second schematic view of a base structure according to an embodiment;

FIG. 6 is a cross-sectional view of a base structure according to one embodiment;

FIG. 7 is a cross-sectional view of a combustion assembly according to one embodiment;

FIG. 8 is a schematic diagram of an embodiment of a current equalizer;

FIG. 9 is a schematic view of a burner body construction according to one embodiment.

Reference numerals:

100. an atmospheric staged combustor; 110. an ejector; 120. a base; 121. a mixing tank; 1211. a first side wall; 1212. a second side wall; 122. a first air flow passage; 123. an injection port; 124. a second air flow passage; 125. a third fixing hole; 126. mounting holes; 127. a cross-section; 130. a combustion assembly; 131. a current equalizer; 1311. enclosing plates; 13111. a first surrounding edge; 13112. a second surrounding edge; 1312. a flow equalizing plate; 13121. a first current equalizing section; 13122. a second current equalizing section; 13123. a connecting section; 1313. a flow equalizing hole; 1314. folding edges; 1315. a second fixed part; 13151. a second fixing hole; 132. a burner body; 1321. fire holes; 1322. flanging; 1323. a first fixed part; 13231. a first fixing hole; 133. a flow equalizing cavity; 140. a seal member; 141. a first through hole; 142. a second through hole; 150. an ignition assembly; 160. pressing a ring; 170. and a fixing member.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the 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, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. 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 present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In one embodiment, referring to fig. 1, fig. 2 and fig. 3, an atmospheric staged burner 100, the atmospheric staged burner 100 includes: injector 110, base 120, and combustion assembly 130. At least two mixing grooves 121 and a first air flow passage 122 are spaced apart from each other on the base 120. An injection port 123 is arranged at the bottom of the mixing tank 121. The eductor port 123 is in communication with the eductor 110. The first air flow passage 122 is used for introducing secondary air. The combustion assembly 130 includes a burner body 132 and a flow equalizer 131, the flow equalizer 131 is installed on the base 120, and the flow equalizer 131 covers the notch of the mixing tank 121. The burner body 132 is installed on the flow equalizer 131, and a flow equalizing chamber 133 is formed between the burner body and the flow equalizer 131. The current equalizer 131 is provided with a current equalizing hole 1313. The flow equalizing chamber 133 communicates with the mixing tub 121 through a flow equalizing hole 1313. The burner body 132 is provided with fire holes 1321 communicated with the flow equalizing chamber 133.

In the atmospheric staged burner 100, during use, gas is ejected from the nozzle, and peripheral air is sucked and enters the ejector 110 to be mixed; and then is injected into the injection port 123 through the injector 110 and flows into the mixing tank 121. The gas entering the mixing tank 121 is mixed again, so that the gas and the air are mixed fully, and the uniformity of the mixed gas is improved. After mixing, the gas flows into the flow equalizing chamber 133 through the flow equalizing holes 1313, and then flows from the flow equalizing chamber 133 to the fire holes 1321, so that the mixed gas flows out of the surface of the burner body 132 for ignition. This atmosphere formula staged combustion ware 100 adds flow equalizer 131 between combustor ware 132 and mixing tank 121 for the mist passes through mixing tank 121 and the mixing action of flow equalizing chamber 133 in proper order before flowing out fire hole 1321, makes gas and air intensive mixing, guarantees that the mist composition remains the homogeneity throughout in the combustion process, thereby makes flame stable combustion, greatly promotes atmosphere formula staged combustion ware 100's combustion performance. In addition, when the gas is introduced, the secondary air also flows to the surface of the burner body 132 from the first air flow channel 122, so that the mixed gas is fully combusted under the participation of the secondary air, and the combustion performance of the atmospheric staged burner 100 is effectively improved. In addition, the on-off valve on the ejector 110 is controlled to realize the communication control of different ejector ports 123 and form a small-load, medium-load or large-load combustion mode, so that the multi-segment combustion function of the atmospheric burner 100 is realized, and the problem of overhigh temperature rise of the medium-load and the small-load in the hot water equipment is better solved.

It should be noted that there are various distribution manners of the flow equalizing holes 1313 on the flow equalizer 131, and this embodiment is not specifically limited, for example: the plurality of flow equalizing holes 1313 are distributed on the flow equalizer 131 in a fan shape, a circular ring shape, a square shape, etc. Similarly, the distribution of the fire holes 1321 on the burner body 132 is varied, for example: the plurality of fire holes 1321 are distributed on the flow equalizer 131 in a fan shape, a circular ring shape, a square shape, and the like. In addition, the self-hole shapes of the flow equalizing hole 1313 and the fire hole 1321 may be a circular hole, a triangular hole, a square hole, an elliptical hole, a special-shaped hole, or the like.

Alternatively, the mounting manner of the current equalizer 131 on the base 120 may be bolting, clamping, pinning, welding, riveting, etc. Meanwhile, the mounting manner of the burner body 132 on the flow equalizer 131 may be bolt connection, clamping connection, pin connection, welding, riveting, etc. Of course, the burner body 132 can be mounted to the base 120 together with the flow equalizer 131 by the same fixture 170 during the mounting process.

Specifically, referring to fig. 2, 8 and 9, the burner body 132 is provided with a first fixing portion 1323. The first fixing portion 1323 is provided with a first fixing hole 13231. The current equalizer 131 is provided with a second fixing portion 1315. The second fixing portion 1315 is provided with a second fixing hole 13151. The base 120 is provided with a third fastening hole 125 opposite to the first fastening hole 13231 and the second fastening hole 13151, respectively, so that in the assembling process, the fastening member 170 is sequentially inserted into the first fastening hole 13231, the second fastening hole 13151 and the third fastening hole 125, so that the burner body 132 and the current equalizer 131 are fastened together on the base 120. The fixing member 170 may be a bolt, a pin, a rivet, or the like.

It should be further noted that the mixing groove 121 and the first air flow passage 122 are respectively spaced on the base 120 in various forms, such as: the mixing groove 121 and the first air flow passage 122 are both arranged along the radial direction of the base 120; alternatively, the mixing groove 121 and the first air flow passage 122 are both extended around the center of the base 120, and the like. Of course, the number of the mixing grooves 121 and the first air flow channels 122 on the base 120 may be one or more, and the embodiment is not particularly limited thereto. In addition, the ejector 110 may be disposed on the base 120 vertically, in parallel, or at an angle.

Specifically, referring to fig. 4 and 5, the ejectors 110 are disposed in one-to-one correspondence with the ejection ports 123. Meanwhile, the ejector 110 is perpendicular to the surface of the base 120, and at the moment, fuel gas in the ejector 110 enters the corresponding mixing tank 121 in a perpendicular mode, so that primary air can be ejected conveniently.

Further, the number of the mixing tank 121 and the number of the combustion assembly 130 are two or more. More than two mixing grooves 121 are spaced around the center of the base 120, and at least one first air flow passage 122 is provided between two adjacent mixing grooves 121. The combustion assemblies 130 are disposed in one-to-one correspondence with the mixing tanks 121. Because the mixing grooves 121 are arranged around the center of the base 120 at intervals, the burner bodies 132 are distributed on the base 120 in an annular manner, so that the gas flows out of the surface of the burner bodies 132 in an annular manner, the uniformity of the mixed gas on the surface of the burner bodies 132 is improved, and the combustion performance of the atmospheric staged burner 100 is further improved. In addition, the annular distribution design of the two or more burner bodies 132 is also beneficial to simplifying the structure of the atmospheric staged burner 100, so that the base 120 can be designed into a circular or polygonal structure, and the atmospheric burner can be effectively applied to column-type or cylinder-type water heating equipment as a whole. In addition, the on-off valve on the ejector 110 is controlled to realize the communication control of different ejector ports 123 and form a small-load, medium-load or large-load combustion mode, so that the multi-segment combustion function of the atmospheric segment burner 100 is realized, and the problem of overhigh temperature rise of the small load and the medium load in the hot water equipment is better solved.

It should be noted that the positional relationship between the first air flow channel 122 and the mixing grooves 121 has various forms, and this embodiment is not particularly limited, and only needs to satisfy that at least one first air flow channel 122 penetrating through the base 120 is disposed between any two adjacent mixing grooves 121. Meanwhile, the distribution of the two or more burner bodies 132 on the base 120 may be a split structure or an integrated structure. When two or more burner bodies 132 are integrally formed on the base 120, the burner bodies 132 may be connected to the burner bodies 132 by curved bars or other structures. In addition, the connection between the burner body 132 and the base 120 may be a direct connection or an indirect connection, wherein an intermediate structure is provided between the burner body 132 and the base 120 when the burner body 132 and the base 120 are indirectly connected.

Specifically, referring to fig. 4, a first air flow passage 122 penetrating through the base 120 is disposed between any two adjacent mixing grooves 121, and the first air flow passage 122 extends along the radial direction of the base 120.

Alternatively, the base 120 may have a circular or polygonal shape. When the base 120 is designed to be circular, the water heater is a cylindrical water heater; when the base 120 is polygonal, the water heater is polygonal cylindrical.

It should be further noted that there are various communication modes between the injector 110 and the injection port 123, such as: the shared ejector 110 is respectively communicated with the corresponding ejector ports 123 through a plurality of branch pipes; or, the injectors 110 are arranged in one-to-one correspondence with the injection ports 123, that is, one injector 110 is communicated with one corresponding injection port 123; alternatively, the injector 110 and the injection port 123 may be provided in one-to-many communication, for example.

Specifically, referring to fig. 4 and 5, the ejector 110 is disposed corresponding to the ejection port 123. Meanwhile, the ejector 110 is perpendicular to the surface of the base 120, and at the moment, fuel gas in the ejector 110 enters the corresponding mixing tank 121 in a perpendicular mode, so that primary air can be ejected conveniently.

Further, referring to fig. 6, a cross section 127 of the mixing groove 121 is taken in a plane perpendicular to the depth direction of the mixing groove 121. The cross-sectional area S of the cross-section 127 increases from the bottom of the mixing channel 121 to the mouth of the mixing channel 121. Therefore, the mixing tank 121 of the present embodiment has an outward flaring structure with a large upper space and a small lower space. When the gas flows into the mixing tank 121 through the injection port 123, the flowing space of the gas in the mixing tank 121 is increased from small to large, the flowing resistance of the gas in the mixing tank 121 is effectively reduced, and the pressure loss of the mixed gas is reduced, so that the combustion pressure of the gas on the burner body 132 is favorably ensured. Wherein the increasing trend of the area S of the cross section 127 is understood to be a gradual increase; it is also understood that first increase, then do not change, then increase; or first increased, then unchanged, then increased, finally left unchanged, etc.

It should be noted that the shape of the mixing tank 121 is various, and it is only necessary that the tank wall of the mixing tank 121 has a tendency of expanding outward from the tank bottom of the mixing tank 121 to the notch of the mixing tank 121, for example: the mixing tank 121 has an inverted trapezoidal shape or an inverted truncated cone shape. In order to facilitate understanding of the depth direction of the mixing tank 121 of the present embodiment, taking fig. 6 as an example, the depth direction of the mixing tank 121 is S in fig. 6₀The direction indicated by any arrow.

In one embodiment, referring to fig. 4, the wall of the mixing tank 121 includes a first sidewall 1211 and a second sidewall 1212 opposite to each other. The first sidewall 1211 and the second sidewall 1212 are both disposed along a radial direction of the base 120, i.e., the first sidewall 1211 and the second sidewall 1212 are both radially distributed on the base 120. Due to the distance D between the first sidewall 1211 and the second sidewall 1212₃From the end of the mixing tank 121 near the center of the base 120 to the end of the mixing tank 121 near the edge of the base 120The tendency is increased, and therefore, the mixing grooves 121 are formed in a fan-shaped radial shape on the base 120. Like this, the outward appearance design with mixing tank 121 is fan-shaped radiallly for the flow distribution outside the mixed gas outflow mixing tank 121 is for being close to base 120 center one end from mixing tank 121 and is the increase trend to mixing tank 121 is close to the base 120 edge, is favorable to alleviateing the gas pressure at atmosphere section combustor 100 center like this, guarantees that atmosphere section combustor 100 periphery has sufficient gas volume, makes the gas evenly distributed on the combustor body 132 surface, improves the combustion performance of gas greatly. Wherein, the distance D₃Increasing trend is understood to be increasing; it is also understood that first increase, then do not change, then increase; or first increased, then unchanged, then increased, finally left unchanged, etc.

Further, referring to fig. 7, the current equalizer 131 includes a current equalizing plate 1312 and a baffle 1311. The surrounding plate 1311 surrounds the flow equalizing plate 1312, the surrounding plate 1311 is mounted on the base 120, and a flow equalizing cavity 133 is formed among the surrounding plate 1311, the flow equalizing plate 1312 and the burner body 132. The flow equalizing plate 1312 is recessed in a direction away from the inside of the mixing tank 121. The flow equalizing hole 1313 is provided on the flow equalizing plate 1312. Because the flow equalizing plate 1312 is recessed in a direction away from the inner side of the mixing tank 121, the middle portion of the flow equalizing plate 1312 is generally lower than the edge of the flow equalizing plate 1312, so that the flow equalizing plate 1312 is in a flaring structure or approximately in a flaring structure, which facilitates the gas entering the flow equalizing chamber 133 to diffuse toward the periphery of the flow equalizing plate 1312, and ensures that the gas is uniformly distributed in the flow equalizing chamber 133.

Alternatively, the flow equalizing plate 1312 may be an inverted trapezoidal plate; or a circular arc plate; or an inverted triangular plate, etc. Also, the cross-sectional shape 127 of the shroud 1311 may be circular, oval, triangular, trapezoidal, quadrilateral, or other polygonal shape, etc.

Specifically, referring to fig. 8, shroud 1311 includes a first peripheral edge 13111 and a second peripheral edge 13112. The first and second peripheral edges 13111, 13112 are disposed along the radial direction of the base 120, that is, the first and second peripheral edges 13111, 13112 are radially distributed in the mixing groove 121. Due to the distance D between the first surrounding edge 13111 and the second surrounding edge 13112₂From one end of shroud 1311 near the center of base 120 to the shroud1311, and therefore the flow equalizer 131 is fan-shaped and radiating on the base 120. Therefore, the appearance of the flow equalizer 131 is designed to be fan-shaped and radial, so that the flow distribution of the mixed gas flowing into the fire hole 1321 is increased from the end, close to the center of the base 120, of the flow equalizer 131 to the edge, close to the base 120, of the flow equalizer 131, which is favorable for reducing the gas pressure at the center of the atmospheric sectional burner 100, ensuring the sufficient gas quantity at the periphery of the atmospheric sectional burner 100, enabling the gas on the surface of the burner body 132 to be uniformly distributed, and greatly improving the combustion performance of the gas.

Further, referring to fig. 7, the flow equalizing plate 1312 includes a first flow equalizing section 13121, a second flow equalizing section 13122, and a connecting section 13123 connected between the first flow equalizing section 13121 and the second flow equalizing section 13122. The first flow equalizing section 13121, the connecting section 13123 and the second flow equalizing section 13122 are sequentially distributed along the radial direction of the base 120, the first flow equalizing section 13121 and the second flow equalizing section 13122 are arranged at an included angle relative to the connecting section 13123, and a distance D is formed between the first flow equalizing section 13121 and the second flow equalizing section 13122₁There is an increasing trend from the end of first flow leg 13121 near connecting leg 13123 to the end of first flow leg 13121 near shroud 1311. Therefore, the flow equalizing plate 1312 of the present embodiment at least includes a three-segment structure, and the first flow equalizing segment 13121 and the second flow equalizing segment 13122 are in an edge expanding structure relative to the connecting segment 13123, so that the gas entering the flow equalizing cavity 133 has two flowing tendencies toward the center of the base 120 and the edge of the base 120 in the radial direction of the base 120, and the gas in the flow equalizing cavity 133 is ensured to be more uniformly distributed, thereby improving the combustion stability of the atmospheric staged combustor 100.

Specifically, referring to fig. 7, the first current equalizing section 13121, the connecting section 13123, and the second current equalizing section 13122 are an integrated structure.

In one embodiment, referring to fig. 8, the connecting section 13123 is disposed toward the injection port 123 in the flow mixing groove, and the distribution density of the flow equalizing holes 1313 on the first flow equalizing section 13121 and the distribution density of the flow equalizing holes 1313 on the second flow equalizing section 13122 are both greater than the distribution density of the flow equalizing holes 1313 on the connecting section 13123, so that the distribution densities of the flow equalizing holes 1313 on the first flow equalizing section 13121, the connecting section 13123, and the second flow equalizing section 13122 are reasonably controlled, so that the airflow distribution on the surface of the outflow flow equalizing plate 1312 is more balanced. Of course, in other embodiments, the flow equalizing holes 1313 may also be equally spaced on the first flow equalizing section 13121, the connecting section 13123, and the second flow equalizing section 13122.

In one embodiment, referring to fig. 7, the first flow equalizing section 13121 is closer to the center of the base 120 than the second flow equalizing section 13122, and the included angle θ between the first flow equalizing section 13121 and the connecting section 13123₁Is larger than the included angle theta between the opposite second flow equalizing section 13122 and the connecting section 13123₂Thus, the first flow equalizing section 13121 is made to have a slope higher than that of the second flow equalizing section 13122, so that the space above the second flow equalizing section 13122 is larger than that above the first flow equalizing section 13121, and further, more mixed gas flows towards the edge of the base 120, and it is ensured that the periphery of the burner body 132 has enough gas supply.

In one embodiment, referring to fig. 7, the current equalizer 131 is provided with a folded edge 1314. The burner body 132 is provided with a flange 1322. When the burner body 132 is installed on the flow equalizer 131, the flange 1322 can cover the flange 1314 after being bent, so that the combination between the flow equalizer 131 and the burner body 132 is more stable, and the stability of the overall structure of the atmospheric staged burner 100 is improved.

In one embodiment, referring to fig. 2, the base 120 is provided with a second air flow passage 124. The second air flow passage 124 is located between the edge of the base 120 and the mixing channel 121, so that during the combustion process, a portion of the secondary air flows out of the second air flow passage 124 to provide sufficient air for the flame combustion around the burner body 132 to ensure sufficient combustion.

Further, referring to fig. 2, the number of the second air channels 124 is two or more, and the two or more second air channels 124 are spaced around the center of the base 120.

In one embodiment, referring to fig. 2, the atmospheric staged burner 100 further includes a seal 140. The sealing member 140 is disposed between the burner body 132 and the base 120, and improves the sealing performance between the burner body 132 and the base 120, so as to ensure that the base 120 and the burner body 132 are sealed firmly and air-tight.

Specifically, referring to fig. 2, the sealing member 140 is disposed between the flow equalizer 131 and the base 120. Meanwhile, the sealing member 140 is a rubber pad.

Further, referring to fig. 2, the sealing member 140 is provided with a first through hole 141 and a second through hole 142. The first through holes 141 are provided in one-to-one correspondence with the mixing grooves 121. The second through holes 142 are disposed in one-to-one correspondence with the first air flow passages 122.

In one embodiment, referring to fig. 2 and 4, the atmospheric staged burner 100 further includes an ignition assembly 150. The base 120 is provided with a mounting hole 126. Two or more mixing grooves 121 are spaced around the periphery of the mounting hole 126, and the ignition assembly 150 is positioned in the mounting hole 126 such that the ignition assembly 150 is stably mounted at the middle of the base 120 so that the ignition assembly 150 stably ignites the peripheral gas.

Further, referring to fig. 2, the atmospheric staged burner 100 further includes a pressing ring 160, and the pressing ring 160 is disposed on the base 120 and connected to one end of the burner body 132. The ignition assembly 150 is mounted on the compression ring 160.

In one embodiment, please refer to fig. 1 and 3, a water heating apparatus includes the atmospheric staged burner 100 in any of the above embodiments.

In the hot water equipment, the atmospheric sectional burner 100 is adopted, and in the using process, gas is sprayed out through a nozzle, and peripheral air is sucked and enters the ejector 110 to be mixed; and then is injected into the injection port 123 through the injector 110 and flows into the mixing tank 121. The gas entering the mixing tank 121 is mixed again, so that the gas and the air are mixed fully, and the uniformity of the mixed gas is improved. After mixing, the gas flows into the flow equalizing chamber 133 through the flow equalizing holes 1313, and then flows from the flow equalizing chamber 133 to the fire holes 1321, so that the mixed gas flows out of the surface of the burner body 132 for ignition. This atmosphere formula staged combustion ware 100 adds flow equalizer 131 between combustor ware 132 and mixing tank 121 for the mist passes through mixing tank 121 and the mixing action of flow equalizing chamber 133 in proper order before flowing out fire hole 1321, makes gas and air intensive mixing, guarantees that the mist composition remains the homogeneity throughout in the combustion process, thereby makes flame stable combustion, greatly promotes atmosphere formula staged combustion ware 100's combustion performance. In addition, when the gas is introduced, the secondary air also flows to the surface of the burner body 132 from the first air flow channel 122, so that the mixed gas is fully combusted under the participation of the secondary air, and the combustion performance of the atmospheric staged burner 100 is effectively improved.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. Atmospheric sector burner (100), characterized in that it comprises:

an ejector (110);

the air purifier comprises a base (120), wherein a first air flow channel (122) and at least two mixing tanks (121) are arranged on the base (120) at intervals, an injection port (123) is arranged at the tank bottom of each mixing tank (121), the injection port (123) is communicated with an injector (110), and the first air flow channel (122) is used for introducing secondary air;

combustion assembly (130), combustion assembly (130) includes combustor body (132) and current equalizer (131), current equalizer (131) are installed on base (120), just current equalizer (131) cover the notch of mixing tank (121), combustor body (132) are installed on current equalizer (131), and with be formed with between current equalizer (131) and flow equalizing chamber (133), be equipped with on current equalizer (131) and flow equalizing chamber (1313), flow equalizing chamber (133) pass through flow equalizing chamber (1313) with mixing tank (121) intercommunication, be equipped with on combustor body (132) with fire hole (1321) that flow equalizing chamber (133) communicate.

2. The atmospheric staged burner as recited in claim 1, wherein the flow equalizer (131) comprises a flow equalizer plate (1312) and a surrounding plate (1311), the surrounding plate (1311) is disposed on the flow equalizer plate (1312), the surrounding plate (1311) is disposed on the base (120), the flow equalizer chamber (133) is formed among the surrounding plate (1311), the flow equalizer plate (1312) and the burner body (132), the flow equalizer plate (1312) is recessed along an inner direction away from the mixing tank (121), and the flow equalizer hole (1313) is disposed on the flow equalizer plate (1312).

3. The atmospheric staged burner of claim 2, characterized in that the flow equalizing plate (1312) comprises a first flow equalizing section (13121), a second flow equalizing section (13122) and a connecting section (13123) connected between the first flow equalizing section (13121) and the second flow equalizing section (13122), the first flow equalizing section (13121), the connecting section (13123) and the second flow equalizing section (13122) being distributed in the radial direction of the base (120), the first flow equalizing section (13121) and the second flow equalizing section (13122) being arranged at an angle to the connecting section (13123), and a distance D between the first flow equalizing section (13121) and the second flow equalizing section (13122)₁The flow equalizing holes (1313) are formed in at least one of the first flow equalizing section (13121), the second flow equalizing section (13122) and the connecting section (13123) and the first flow equalizing section (13121) increases from one end of the first flow equalizing section (13121) close to the connecting section (13123) to one end of the first flow equalizing section (13121) close to the shroud (1311).

4. The atmospheric staged burner according to claim 3, characterized in that the connecting section (13123) is arranged in the mixing channel (121) towards the injection port (123), the first flow equalizing section (13121), the second flow equalizing section (13122) and the connecting section (13123) are provided with flow equalizing holes (1313), and the distribution density of the flow equalizing holes (1313) in the first flow equalizing section (13121) and the distribution density of the flow equalizing holes (1313) in the second flow equalizing section (13122) are greater than the distribution density of the flow equalizing holes (1313) in the connecting section (13123); and/or the presence of a gas in the gas,

the first flow equalizing section (13121) is closer to the center of the base (120) than the second flow equalizing section (13122), and the included angle theta between the first flow equalizing section (13121) and the connecting section (13123)₁Is larger than the included angle theta between the second flow equalizing section (13122) and the connecting section (13123)₂。

5. Atmospheric sector burner according to claim 2, characterised in that the shroud (1311) comprises a first (13111) and a second (13112) skirt, the first (13111) and second (13112) skirt each being arranged radially of the base (120), the first (13111) and second (13112) skirt being spaced apart by a distance D₂The trend is increased from one end of the coaming (1311) close to the center of the base (120) to one end of the coaming (1311) close to the edge of the base (120).

6. The atmospheric staged burner as defined in claim 1, wherein the flow equalizer (131) is provided with a flange (1314), the burner body (132) is provided with a flange (1322), and when the burner body (132) is installed on the flow equalizer (131), the flange (1322) is bent to cover the flange (1314).

7. The atmospheric staged burner of claim 1, wherein the burner body (132) is provided with a first fixing portion (1323), the first fixing portion (1323) is provided with a first fixing hole (13231), the current equalizer (131) is provided with a second fixing portion (1315), the second fixing portion (1315) is provided with a second fixing hole (13151), and the base (120) is provided with a third fixing hole (125) opposite to the first fixing hole (13231) and the second fixing hole (13151), respectively.

8. Atmospheric staged burner according to any of claims 1 to 7, wherein a second air channel (124) is provided in the base (120), said second air channel (124) being located between the edge of the base (120) and the mixing channel (121); and/or the presence of a gas in the atmosphere,

the atmospheric staged burner (100) further comprising a seal (140), the seal (140) being disposed between the burner body (132) and the base (120); and/or the presence of a gas in the gas,

the atmospheric staged burner (100) further comprises an ignition assembly (150), a mounting hole (126) is formed in the base (120), more than two mixing grooves (121) are arranged around the periphery of the mounting hole (126) at intervals, and the ignition assembly (150) is located in the mounting hole (126); and/or the presence of a gas in the gas,

the ejector (110) is perpendicular to the surface of the base (120).

9. The atmospheric staged burner according to any of claims 1 to 7, characterized in that a cross section (127) of the mixing channel (121) is taken in a plane perpendicular to the depth direction of the mixing channel (121), the area S of the cross section (127) increasing from the bottom of the mixing channel (121) to the mouth of the mixing channel (121); and/or the presence of a gas in the gas,

the wall of the mixing groove (121) comprises a first side wall (1211) and a second side wall (1212) which are arranged oppositely, the first side wall (1211) and the second side wall (1212) are both arranged along the radial direction of the base (120), and a distance D is formed between the first side wall (1211) and the second side wall (1212)₃The trend is increased from one end of the mixing groove (121) close to the center of the base (120) to one end of the mixing groove (121) close to the edge of the base (120).

10. A water heating device, characterized in that it comprises an atmospheric staged burner (100) according to any of claims 1 to 9.

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