CN219264305U - Burner with a burner body - Google Patents

Abstract

The utility model relates to the technical field of combustors, in particular to a combustor which comprises a first shell and a second shell, wherein the first shell is provided with a combustion cavity. The second casing is located the outside of first casing, mutual interval arrangement between first casing and the second casing, links to each other through the closing plate between first casing and the second casing to form the cooling chamber that holds the cooling wind. Wherein, be equipped with first wind gap on the first casing, through first wind gap intercommunication between combustion chamber and the cooling chamber, be equipped with the second wind gap on the second casing, the cooling chamber passes through the second wind gap intercommunication with the atmosphere, first wind gap and second wind gap are at the circumferencial upper interval arrangement of the extending direction of first casing and/or first casing. The burner provided by the embodiment of the utility model can reduce the temperature of the first shell and the second shell, avoid the deformation or damage of the first shell and the second shell, and has the advantages of small volume, light weight and the like.

Description

Burner with a burner body

Technical Field

The utility model relates to the technical field of combustors, in particular to a combustor.

Background

The burner is mainly used for burning various solid fuels such as biomass, industrial solid waste, municipal refuse and the like or combustible solid waste. In the related art, refractory clay is generally filled between the inner wall and the outer wall of the burner to prevent accidents caused by heat loss and over-temperature of the outer wall and the inner wall. However, the use effect of the refractory clay is not ideal, and the problems of how to prevent the heat loss of the burner and the overtemperature of the outer wall and the inner wall of the burner are needed to be solved.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, embodiments of the present utility model provide a burner that can reduce the temperature of the first and second housings, avoid deformation or damage of the first and second housings, and that has advantages of small size and light weight.

The burner of the embodiment of the utility model comprises a first shell and a second shell.

The first shell is provided with a combustion chamber;

the second shell is arranged on the outer side of the first shell, the first shell and the second shell are arranged at intervals, and the first shell and the second shell are connected through a sealing plate to form a cooling cavity for accommodating cooling air;

wherein, be equipped with first wind gap on the first casing, through first wind gap intercommunication between combustion chamber and the cooling chamber, be equipped with the second wind gap on the second casing, the cooling chamber passes through the second wind gap intercommunication with the atmosphere, first wind gap and second wind gap are at the circumferencial upper interval arrangement of the extending direction of first casing and/or first casing.

According to the combustor provided by the embodiment of the utility model, the first shell and the second shell are arranged at intervals, so that a cooling cavity can be formed, cooling air is introduced into the cooling cavity, and the cooling air can exchange heat with the first shell and the second shell, so that the temperature of the first shell and the second shell is reduced, the temperature of the first shell and the second shell is ensured to be always lower than the upper limit of the temperature of the first shell and the second shell, the first shell and the second shell are prevented from being excessively high, the first shell and the second shell are prevented from being deformed or damaged due to excessively high temperature, and the service lives of the first shell and the second shell are prolonged, namely the service lives of the combustor are prolonged. In addition, cooling air can be continuously introduced into the cooling cavity so as to reduce the temperature of the first shell and the second shell. At the same time, the upper limit of the combustion temperature of the combustion chamber is raised. In addition, compared with the combustor of the refractory mortar, the combustor provided by the embodiment of the utility model has the advantages of small size, light weight and the like.

Optionally, the first air port is disposed at a first end of the first housing, the second air port is disposed at a second end of the second housing, and the first end of the first housing and the second end of the second housing are located on different sides of the burner.

Optionally, the combustor further includes a first flow guiding member, the first flow guiding member is spirally disposed on an outer peripheral surface of the first housing and forms a spiral channel, the spiral channel is communicated with the cooling cavity, and the first flow guiding member is in contact with an inner peripheral surface of the second housing.

Optionally, the spiral center line of the first flow guide is parallel to the center line of the first housing.

Optionally, the first flow guiding members, the first air openings and the second air openings are respectively at least two, the at least two first flow guiding members are mutually arranged at intervals, the spiral directions of the at least two first flow guiding members are the same, so that at least two spiral channels which are mutually isolated are formed, the number of the first flow guiding members corresponds to that of the spiral channels, and each spiral channel is correspondingly communicated with at least one first air opening and at least one second air opening.

Optionally, the combustor further includes a second flow guiding member, the second flow guiding member is spirally disposed on the outer peripheral surface of the first casing and is located in the spiral channel, the second flow guiding member and the inner peripheral surface of the second casing are mutually spaced, and the spiral direction of the second flow guiding member is consistent with the spiral direction of the first flow guiding member.

Optionally, at least two second flow guiding elements are arranged in the spiral channel, and the at least two second flow guiding elements are mutually arranged at intervals.

Optionally, on the longitudinal section of the second housing, a first preset angle is formed between the projection of the first flow guiding element and the projection of the first housing; and/or a second preset angle is formed between the projection of the second flow guiding piece and the projection of the first shell.

Optionally, the burner further includes a guide member, at least a portion of the guide member is matched with the first air opening, and the guide member is connected with the first housing, the guide member has an air outlet, the air outlet is communicated with the first air opening, the guide member is used for adjusting the air outlet direction, the air outlet direction is along the direction from the first end of the first housing to the second end of the first housing, the air outlet direction forms a third preset angle with the extending direction of the first housing, and the third preset angle is greater than or equal to 0 degree and less than 90 degrees; and/or the air outlet direction and the circumferential direction of the first shell are cut Xiang Chengdi by four preset angles, wherein the fourth preset angle is more than 0 degrees and less than or equal to 90 degrees.

Optionally, the burner further comprises an anti-reverse protrusion, wherein the anti-reverse protrusion is arranged on the inner peripheral surface of the first shell, and the anti-reverse protrusion is positioned on one side of the first air port, which is far away from the second air port; and/or

The combustor also comprises an insulating layer, and the insulating layer is arranged on the outer peripheral surface of the second shell.

Drawings

FIG. 1 is a schematic cross-sectional view of a burner according to an embodiment of the present utility model.

Reference numerals:

1000-burner, 100-first casing, 110-combustion chamber, 120-first wind gap, 200-second casing, 210-second wind gap, 300-cooling chamber, 400-first water conservancy diversion spare, 500-second water conservancy diversion spare, 600-reverse proof arch, 700-heat preservation.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

A burner 1000 according to an embodiment of the present utility model is described below with reference to the accompanying drawings. As shown in fig. 1, a burner 1000 of an embodiment of the present utility model includes a first housing 100 and a second housing 200.

The first housing 100 has a combustion chamber 110. The second housing 200 is provided at an outer side of the first housing 100, the first housing 100 and the second housing 200 are spaced apart from each other, and the first housing 100 and the second housing 200 are connected by a sealing plate to form a cooling chamber 300 accommodating cooling wind. Wherein, the first casing 100 is provided with a first air port 120, the combustion chamber 110 is communicated with the cooling chamber 300 through the first air port 120, the second casing 200 is provided with a second air port 210, the cooling chamber 300 is communicated with the atmosphere through the second air port 210, and the first air port 120 and the second air port 210 are arranged at intervals in the extending direction of the first casing 100 and/or the circumferential direction of the first casing 100.

According to the burner 1000 of the embodiment of the utility model, the first casing 100 and the second casing 200 are arranged at intervals, so that the cooling cavity 300 can be formed, and then cooling air is introduced into the cooling cavity 300, so that the cooling air can exchange heat with the first casing 100 and the second casing 200, thereby reducing the temperature of the first casing 100 and the second casing 200, ensuring that the temperature of the first casing 100 and the second casing 200 is always lower than the upper temperature limit of the first casing 100 and the second casing 200, preventing the temperature of the first casing 100 and the second casing 200 from being too high, avoiding deformation or damage of the first casing 100 and the second casing 200 due to the too high temperature, and prolonging the service lives of the first casing 100 and the second casing 200, namely prolonging the service life of the burner 1000. In addition, cooling air may be continuously introduced into the cooling chamber 300 to lower the temperatures of the first and second cases 100 and 200. At the same time, the upper limit of the combustion temperature of the combustion chamber 110 is raised. In addition, the burner 1000 of the embodiment of the present utility model has advantages of small volume, light weight, etc., relative to the burner of the refractory mortar.

As shown in fig. 1, in order to make the technical solution of the present application easier to understand, the technical solution of the present application will be described in more detail below with a specific embodiment of a burner 1000.

In some embodiments, the burner 1000 of the present embodiment may be a burner 1000 for directly burning a raw material, or may be a burner 1000 for post combustion. For example, a post-combustion burner may be connected to a rotary boiler, and insufficiently combusted flue gas in the rotary boiler may flow into the post-combustion burner 1000, and thus insufficiently combusted flue gas may be further sufficiently combusted in the burner 1000 to improve the utilization rate of raw materials and the combustion efficiency of the burner 1000.

In some embodiments, as shown in fig. 1, the burner 1000 includes a first housing 100 and a second housing 200, the first housing 100 having a combustion chamber 110 for combusting a feedstock or flue gas formed by incomplete combustion of the feedstock. The second casing 200 is disposed at the outer side of the first casing 100, and the first casing 100 and the second casing 200 are disposed at intervals to form a cooling cavity 300 for accommodating cooling air, and the cooling cavity 300 can be filled with cooling air, and exchange heat with the first casing 100 and the second casing 200 by using the cooling air, so that the temperature of the first casing 100 and the second casing 200 is reduced, the temperature of the first casing 100 and the second casing 200 is ensured to be always lower than the upper temperature limit of the first casing 100 and the second casing 200, the temperature of the first casing 100 and the second casing 200 is prevented from being excessively high, deformation or damage of the first casing 100 and the second casing 200 due to the excessively high temperature is avoided, and the service lives of the first casing 100 and the second casing 200 are prolonged, namely, the service life of the combustor 1000 is prolonged. In addition, since cooling air can be continuously introduced into the cooling chamber 300 to maintain the temperatures of the first and second housings 100 and 200, the upper limit of the combustion temperature of the combustion chamber 110 is further increased, and indirectly, the utilization rate of raw materials or smoke and the combustion efficiency of the burner 1000 are improved. For example, the upper temperature limit in the combustion chamber 110 is 1000 degrees under normal conditions, and if the temperature in the combustion chamber 110 exceeds 1000 degrees, the first and second housings 100 and 200 may be deformed or damaged due to high temperature. In the embodiment of the present utility model, since the cooling chamber 300 can continuously exchange heat with the first and second cases 100 and 200, the temperature of the first and second cases 100 and 200 is reduced. In case of exceeding 1000 degrees (e.g., 1300 degrees) in the combustion chamber 110, the temperatures of the first and second cases 100 and 200 may be always maintained at 1000 degrees by the cooling chamber 300. That is, the upper limit of the temperature in the combustion chamber 110 of the conventional burner is 1000 degrees, and if the combustion chamber 110 exceeds 1000 degrees, the first housing 100 and the second housing 200 may be deformed or damaged. However, in the embodiment of the present utility model, the temperatures of the first and second housings 100 and 200 are maintained at 1000 degrees by the cooling chamber 300, and when the upper temperature limit in the combustion chamber 110 exceeds 1000, the first and second housings 100 and 200 are not deformed or damaged.

In other words, the cooling cavity 300 of the embodiment of the present utility model can reduce the temperature of the first casing 100 and the second casing 200, and also can maintain the temperature of the first casing 100 and the second casing 200 within a certain range, so that the upper limit of the combustion temperature in the combustion cavity 110 can be increased while the first casing 100 and the second casing 200 are not deformed or damaged, thereby improving the combustion efficiency of the burner 1000 and the utilization rate of raw materials.

The burner 1000 of the present embodiment, in which the first and second housings 100 and 200 are coupled with each other, has advantages of small size, light weight, etc., compared to the conventional combustion engine of the refractory mortar, and the first and second housings 100 and 200 are easily installed and removed for easy maintenance and replacement of the first and second housings 100 and 200.

In some embodiments, as shown in fig. 1, a first tuyere 120 is provided on the first housing 100, the combustion chamber 110 is communicated with the cooling chamber 300 through the first tuyere 120, a second tuyere 210 is provided on the second housing 200, and the cooling chamber 300 is communicated with the atmosphere through the second tuyere 210. Specifically, cooling air may be introduced into the cooling cavity 300 from the second tuyere 210, and then the cooling air may be introduced into the combustion chamber 110 from the cooling cavity 300 through the first tuyere 120. The cooling wind may exchange heat with the first and second cases 100 and 200 within the cooling chamber 300 to reduce or maintain the temperatures of the first and second cases 100 and 200. Meanwhile, the temperature of the cooling air after heat exchange can enter the combustion chamber 110 through the first air opening 120, and the cooling air after temperature rise can not only continuously provide oxygen for the combustion chamber 110 so as to improve the combustion efficiency of the combustion chamber 110, but also be more beneficial to the combustion of raw materials or flue gas in the combustion chamber 110 relative to the cooling air without heat exchange, and further improve the combustion efficiency of the burner 1000. At the same time, the cooling air may carry heat of the first and second housings 100 and 200 into the combustion chamber 110, reducing heat dissipation of the burner 1000.

In some embodiments, as shown in fig. 1, the first and second tuyeres 120 and 210 are spaced apart in an extending direction of the first casing 100 and/or a circumferential direction of the first casing 100. Specifically, the first and second tuyeres 120 and 210 are spaced apart from each other, and it is possible to ensure that the cooling wind sufficiently exchanges heat within the cooling chamber 300. Preferably, the positions of the first tuyere 120 and the second tuyere 210 are staggered relatively, so that cooling air is prevented from entering the combustion chamber 110 directly through the second tuyere 210 without sufficiently exchanging heat in the cooling chamber 300. For example, as shown in fig. 1, the first tuyere 120 is located at the upper right and the second tuyere 210 is located at the lower left, so that a certain flow distance between the cooling air flowing from the first tuyere 120 to the second tuyere 210 is ensured, and the cooling air can perform sufficient heat exchange in the cooling chamber 300.

In some embodiments, as shown in fig. 1, the first tuyere 120 is provided at a first end of the first housing 100, the second tuyere 210 is provided at a second end of the second housing 200, and the first end of the first housing 100 and the second end of the second housing 200 are located at different sides of the burner 1000.

In some embodiments, as shown in fig. 1, the combustor 1000 further includes a first guide 400 spirally disposed on an outer circumferential surface of the first housing 100 and forming a spiral passage communicating with the cooling chamber 300, the first guide 400 abutting against an inner circumferential surface of the second housing 200.

Specifically, the first flow guide 400 may form a spiral channel, so that the cooling air may flow in the spiral channel, and the flowing distance and flowing time of the cooling air in the cooling cavity 300 may be increased, so that the cooling air may perform sufficient heat exchange in the cooling cavity 300. In addition, the first flow guiding member 400 is disposed on the outer peripheral surface of the first housing 100, and the contact surface of the first flow guiding member 400 with the cooling air can exchange heat with the cooling air, so that the heat exchange efficiency of the cooling air is further improved. In addition, the first flow guide 400 is disposed on the outer circumferential surface of the first housing 100, and at the same time, the first flow guide 400 and the inner circumferential surface of the second housing 200 are in contact with each other, and the first flow guide 400 can play a certain supporting role on the first housing 100 and the second housing 200, so that the mechanical strength of the first housing 100 and the second housing 200 is enhanced, that is, the thermal stress of the first housing 100 and the second housing 200 is increased, and the first housing 100 and the second housing 200 are prevented from being damaged due to the excessive thermal stress. In other words, the first flow guide 400 has a function similar to a reinforcing rib.

In some embodiments, as shown in fig. 1, the helical centerline of the first baffle 400 is parallel to the centerline of the first housing 100. Specifically, for example, the center line of the first housing 100 is in the up-down direction of fig. 1, and the first flow guide 400 may be spirally upward disposed on the first housing 100 or may be spirally downward disposed on the first housing 100. Preferably, as shown in fig. 1, a spiral start point of the first flow guide 400 may be located at the second end of the second housing 200 (i.e., the lower end of the second housing 200 in fig. 1), and a spiral end point of the first flow guide 400 may be located at the first end of the first housing 100 (i.e., the upper end of the first housing 200 in fig. 1) such that a distance of a spiral passage located in the cooling chamber 300 is relatively long, further increasing a flow distance and a flow time of cooling wind within the cooling chamber 300 such that the cooling wind may sufficiently exchange heat in the cooling chamber 300. In addition, the smaller the spiral angle of the first flow guiding member 400, the longer the distance of the spiral channel in the cooling cavity 300, the longer the distance of the spiral channel can be changed by changing the spiral angle of the first flow guiding member 400, and the cooling air can be fully heat exchanged in the cooling cavity 300.

In some embodiments, at least two of the first flow guide 400, the first tuyere 120, and the second tuyere 210, respectively, i.e., the first flow guide 400 may be provided in plurality, the first tuyere 120 may be provided in plurality, and the second tuyere 210 may be provided in plurality. The first flow guiding members 400 may be disposed in plurality, and under the condition that the first flow guiding members 400 can exchange heat with the cooling air, the plurality of first flow guiding members 400 exchange heat with the cooling air at the same time, so that the heat exchange efficiency of the cooling air can be improved.

In some embodiments, as shown in fig. 1, at least two first flow guiding members 400 are arranged at intervals, and the spiral directions between at least two first flow guiding members 400 are the same, so as to form at least two spiral channels which are isolated from each other, and the number of the first flow guiding members 400 corresponds to the number of the spiral channels. In other words, for example, two first deflectors 400 are provided on the first housing 100, and the two first deflectors 400 may form two spiral passages within the cooling chamber 300.

In some embodiments, as shown in fig. 1, each helical channel communicates with at least one first tuyere 120 and at least one second tuyere 210, respectively. Specifically, the spiral passage may communicate with the first and second tuyeres 120 and 210, ensuring that cooling wind flows in the spiral passage. In addition, one spiral passage may communicate with the plurality of first tuyeres 120, and one spiral passage may also communicate with the plurality of second tuyeres 210.

In some embodiments, as shown in fig. 1, the combustor 1000 further includes a second flow guide 500, the second flow guide 500 being spirally provided on the outer circumferential surface of the first casing 100 and positioned in the spiral passage, the second flow guide 500 being spaced apart from the inner circumferential surface of the second casing 200, the spiral direction of the second flow guide 500 being identical to the spiral direction of the first flow guide 400. Specifically, the second flow guide 500 may guide the cooling wind in the spiral passage such that the cooling wind flows along the spiral passage. In addition, the second flow guide 500 is disposed on the outer circumferential surface of the first housing 100, and the second flow guide 500 can exchange heat with the cooling air, thereby improving the heat exchange efficiency of the cooling air. In addition, the second flow guide 500 also enhances the mechanical strength of the first housing 100.

In some embodiments, at least two second flow guiding elements are arranged in the spiral channel, and the at least two second flow guiding elements are arranged at intervals. Specifically, the second water conservancy diversion spare is equipped with a plurality ofly, can further strengthen the water conservancy diversion effect to the cooling wind, can also further improve the heat exchange efficiency of cooling wind simultaneously.

In some embodiments, the first and second flow directors 400, 500 may be sheets.

In some embodiments, as shown in fig. 1, in a longitudinal section of the second housing 200, a projection of the first flow guide 400 forms a first preset angle with a projection of the first housing 100 and/or a projection of the second flow guide forms a second preset angle with a projection of the first housing. Specifically, for example, on a longitudinal section of the second housing 200, the projection of the first flow guide 400 is at right angles to the projection of the first housing 100, and the relative length of the projection of the first flow guide 400 between the first housing 100 and the second housing 200 is shortest, that is, the contact area of the side surface of the first flow guide 400 with the cooling wind is smallest. When the first preset angle is smaller, the contact area between the side surface of the first flow guiding member 400 and the cooling air is larger, which is more beneficial for the heat exchange between the first flow guiding member 400 and the cooling air. In addition, the principle of the second flow guiding element 500 is the same as that of the first flow guiding element 400, and will not be described again here.

In some embodiments, the burner 1000 further includes a guide, at least a portion of which is engaged with the first air port 120, and is connected to the first housing 100, the guide having an air outlet in communication with the first air port 120, the guide for adjusting the direction of the air outlet. Specifically, a guide may be installed on the first housing 100, and an air outlet of the guide communicates with the first air outlet 120, and the guide may guide the heat exchanged cooling air into the combustion chamber 110, wherein the guide may also adjust an air outlet direction.

In some embodiments, as shown in fig. 1, the overall direction of the air outlet direction of the guide member is a direction from the first end of the first housing 100 toward the second end of the first housing 100, and the air outlet direction of the guide member forms a third preset angle with the extending direction of the first housing 100, where the third preset angle is greater than or equal to 0 degrees and less than 90 degrees. Specifically, the extending direction of the first housing 100 is the up-down direction as shown in fig. 1, and the overall flow direction of the air outlet direction of the guide member may be from top to bottom or from bottom to top. The air outlet direction of the guide member and the circumferential direction of the first housing 100 are cut Xiang Chengdi by four preset angles, and the fourth preset angle is greater than 0 degrees and less than or equal to 90 degrees. For example, as shown in fig. 1, in the embodiment of the present utility model, the flow direction of the flue gas is set to flow from bottom to top, the first end of the first housing 100 refers to the upper end of the first housing 100 in fig. 1, the first tuyere 120 is located at the upper end of the first housing 100, and the second end of the first housing 100 refers to the lower end of the first housing 100 in fig. 1. The second tuyere 210 is located at the lower end of the second housing 200, and the cooling air enters the cooling chamber 300 through the first tuyere 120 and then enters the combustion chamber through the second tuyere 210, i.e., the flow direction of the cooling air in the housing is from bottom to top. Meanwhile, the cooling wind flowing out of the guide may flow spirally downward along the inner circumferential surface of the first housing 100, and the swirling cooling wind may generate negative pressure at the lower end of the first housing 100, so that the negative pressure may suck the smoke into the combustion chamber 110, and accelerate the flow rate of the smoke into the combustion chamber 110. In addition, the swirling cooling wind flows spirally downward along the inner circumferential surface of the first housing 100, and at the lower end of the first housing 100, the swirling cooling wind flows toward the center of the inner combustion chamber 110 so as to be fused with the flue gas from bottom to top, and the swirling cooling wind can drive the flue gas to flow rotationally, that is, the swirling cooling wind flows spirally downward along the inner circumferential surface of the first housing 100, and the flue gas flows rotationally from bottom to top in the middle of the combustion chamber 110. In the course of the rotation flow of the flue gas from bottom to top, the unburned combustible materials in the flue gas enter the cooling air flowing downwards along the inner peripheral surface of the first shell 100 in a spiral way under the action of centrifugal force, so that the unburned combustible materials circularly flow in the combustion chamber 110 to be fully combusted.

In some embodiments, as shown in fig. 1, the burner 1000 further includes an anti-reverse protrusion 600, the anti-reverse protrusion 600 being provided at an inner circumferential surface of the first casing 100, the anti-reverse protrusion 600 being located at a side of the first tuyere 120 remote from the second tuyere 210. Specifically, the reverse protrusion 600 mainly prevents the cooling wind flowing out of the first tuyere 120 from bringing the smoke located at the upper end of the first housing 100 into the combustion chamber 110, ensuring that the smoke can normally flow out of the upper end of the first housing 100.

In some embodiments, as shown in fig. 1, the combustor 1000 further includes an insulation layer 700, and the insulation layer 700 is provided on an outer circumferential surface of the second housing 200. Specifically, the insulation layer 700 may be a lightweight insulation material, such as refractory rock wool, etc., and the insulation layer 700 may prevent heat dissipation of the burner 1000.

Working principle: as shown in fig. 1, the cooling wind enters from the second tuyere 210 at the lower end of the burner, flows in the spiral passage in the cooling chamber 300, then flows out from the first tuyere 120 at the upper end of the burner, then flows spirally downward against the inner circumferential surface of the first housing 100, and finally merges with the smoke flowing from bottom to top in the combustion chamber 300.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean 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 utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. A burner, comprising:

a first housing having a combustion chamber;

the second shell is arranged on the outer side of the first shell, the first shell and the second shell are arranged at intervals, and the first shell and the second shell are connected through a sealing plate to form a cooling cavity for accommodating cooling air;

the cooling device comprises a first shell, a second shell, a combustion cavity, a cooling cavity, a first air port, a second air port, a first air port and a second air port, wherein the first air port is arranged on the first shell, the combustion cavity is communicated with the cooling cavity through the first air port, the second air port is arranged on the second shell, and the first air port and the second air port are arranged in the extending direction of the first shell and/or are arranged at intervals in the circumferential direction of the first shell.

2. The burner of claim 1, wherein the first tuyere is provided at a first end of the first housing and the second tuyere is provided at a second end of the second housing, the first end of the first housing and the second end of the second housing being located on different sides of the burner.

3. The burner of claim 1, further comprising a first deflector spirally disposed on an outer peripheral surface of the first housing and forming a spiral passage, the spiral passage communicating with the cooling chamber, the first deflector abutting against an inner peripheral surface of the second housing.

4. A burner according to claim 3, wherein the helical centre line of the first flow guide is parallel to the centre line of the first housing.

5. A burner according to claim 3, wherein the first flow guiding members, the first air openings and the second air openings are respectively at least two, the at least two first flow guiding members are arranged at intervals, the spiral directions of the at least two first flow guiding members are the same, so that at least two mutually isolated spiral channels are formed, the number of the first flow guiding members corresponds to the number of the spiral channels, and each spiral channel is correspondingly communicated with at least one first air opening and at least one second air opening.

6. A burner according to claim 3, further comprising a second flow guide member spirally provided on the outer peripheral surface of the first housing and positioned in the spiral passage, the second flow guide member and the inner peripheral surface of the second housing being arranged at a distance from each other, and a spiral direction of the second flow guide member being identical to a spiral direction of the first flow guide member.

7. The burner of claim 6, wherein at least two of said second flow guides are disposed in said spiral path and are spaced apart from each other.

8. The burner of claim 7, wherein a first predetermined angle is formed between the projection of the first deflector and the projection of the first housing in a longitudinal section of the second housing; and/or a second preset angle is formed between the projection of the second flow guiding piece and the projection of the first shell.

9. The burner of any one of claims 1-8, further comprising a guide, at least a portion of the guide cooperating with the first tuyere and the guide being connected to the first housing, the guide having an air outlet, the air outlet being in communication with the first tuyere, the guide being for adjusting an air outlet direction, the air outlet direction being in a direction from a first end of the first housing toward a second end of the first housing, and the air outlet direction being at a third predetermined angle to an extension direction of the first housing, the third predetermined angle being greater than or equal to 0 degrees and less than 90 degrees; and/or four preset angles of the air outlet direction and a circumferential cut Xiang Chengdi of the first shell, wherein the fourth preset angle is greater than 0 degrees and less than or equal to 90 degrees.

10. The burner of any one of claims 1-8, further comprising an anti-backup protrusion provided on an inner peripheral surface of the first housing, the anti-backup protrusion being located on a side of the first tuyere remote from the second tuyere; and/or

The combustor also comprises an insulation layer, and the insulation layer is arranged on the outer peripheral surface of the second shell.

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