CN216953571U - Gas heat exchange device and combustion chamber structure - Google Patents

Abstract

The utility model relates to a gas heat exchange device and a combustion chamber structure.air with lower external temperature enters a cooling flow channel through a first air inlet, so that an inner shell and an outer shell can be cooled and cooled, and the influence on the normal work of electrical elements caused by overhigh temperature is avoided; the air in the cooling flow channel flows from the first air outlet hole, so that the air with lower external temperature can continuously flow into the cooling flow channel through the first air inlet hole. Meanwhile, air flowing out of the first air outlet hole enters the air inlet channel, one part of the air in the air inlet channel directly flows into the combustion cavity to participate in combustion, and the other part of the air enters the air inlet gap and enters the assembly gap and then enters the combustion cavity to participate in combustion, so that sufficient air is guaranteed to participate in combustion, the combustion working condition is improved, and the performance of the whole machine is improved.

Description

Gas heat exchange device and combustion chamber structure

Technical Field

The utility model relates to the technical field of heat exchange, in particular to a gas heat exchange device and a combustion chamber structure.

Background

Gas heat exchange devices such as a gas water heater exchange heat with a combustion chamber structure and a heat exchange tube of a heat exchanger by using high-temperature flue gas, so that heat exchange media such as water in the heat exchange tube are heated. In order to avoid the interference of the overhigh temperature of the shell to the electrical components installed on the shell, a cooling channel is usually arranged on the shell, and outside cold air enters the cooling channel to cool the shell, so that the combustion working condition is poor due to the mode, and the performance of the whole machine is influenced.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the utility model is to provide a combustion chamber structure, which can improve the combustion working condition and improve the performance of the whole machine.

The second technical problem to be solved by the utility model is to provide a gas heat exchange device, which can improve the combustion working condition and improve the performance of the whole machine.

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

a combustion chamber structure comprising:

the combustor comprises a combustor shell, a combustion chamber and a cooling device, wherein the combustor shell comprises an inner shell and an outer shell, the inner shell is provided with a combustion cavity, and the inner shell is arranged in the outer shell and is arranged at an interval with the outer shell to form a cooling flow channel with a first air inlet and a first air outlet;

the combustor assembly, the top of combustor assembly be equipped with the fire hole that two at least intervals set up and be located adjacent two assembly gap between the fire hole, the bottom of combustor assembly be equipped with the admission clearance of assembly gap intercommunication, combustor assembly at least part set up in the shell body and with the shell body interval set up form with first venthole the combustion chamber reaches the inlet channel that the admission clearance all communicates, and follow the axial in combustion chamber, at least two the fire hole all set up in the combustion chamber is located the top of first venthole.

Compared with the background technology, the combustion chamber structure of the utility model has the following beneficial effects: air with lower external temperature enters the cooling flow channel through the first air inlet hole, so that the inner shell and the outer shell can be cooled and cooled, and the influence on the normal work of electrical components caused by overhigh temperature is avoided; the air in the cooling flow channel flows from the first air outlet hole, so that the air with lower external temperature can continuously flow into the cooling flow channel through the first air inlet hole. Meanwhile, air flowing out of the first air outlet hole enters the air inlet channel, one part of the air in the air inlet channel directly flows into the combustion cavity to participate in combustion, and the other part of the air enters the air inlet gap and enters the assembly gap and then enters the combustion cavity to participate in combustion, so that sufficient air is guaranteed to participate in combustion, the combustion working condition is improved, and the performance of the whole machine is improved. Moreover, the air exchanges heat in the cooling flow channel and enters the air inlet channel, the air inlet gap and the assembly gap after being heated up, the outside and the inside of the burner assembly can be preheated, so that the mixing of the gas and the air is quicker and more sufficient, and the combustion efficiency is improved.

In one embodiment, the outer shell is provided with the first air inlet, the lower end of the inner shell and the outer shell are spaced to form the first air outlet, the upper end of the outer shell is provided with a first flanging extending towards the direction deviating from the inner shell, the first flanging is provided with a first clamping portion, the upper end of the inner shell is provided with a second flanging extending towards the direction close to the outer shell and attached to the first flanging, and the second flanging is provided with a second clamping portion in clamping fit with the first clamping portion.

In one embodiment, at least two injection holes are formed in one side of the burner assembly, each injection hole is correspondingly communicated with at least one fire hole, the outer shell is provided with a clearance gap correspondingly communicated with the injection holes, a supporting flange extending towards the direction close to the burner assembly is arranged at the lower end of the outer shell, and the supporting flange is in supporting fit with the burner assembly.

In one embodiment, the combustion chamber structure further includes a first partition connected to an outer side wall of the outer casing and located between the first intake hole and the injection hole in an axial direction of the combustion chamber.

In one embodiment, the burner assembly comprises an installation shell and at least two fire rows, the installation shell is provided with an installation cavity and at least two installation parts arranged on the inner side wall of the installation cavity at intervals, the at least two fire rows are installed in one-to-one correspondence with the at least two installation parts, the adjacent two fire rows are arranged at intervals to form the assembly gap, each fire row is provided with a fire hole at the top end, each fire row is provided with a bottom end which is communicated with the bottom wall of the installation cavity to form an interval cavity, and the installation shell is further provided with an air inlet which is communicated with the interval cavity to form the air inlet gap.

In one embodiment, the bottom wall of the mounting cavity is provided with a second air inlet hole for communicating the outside and the air inlet gap.

In one embodiment, the burner assembly further comprises a bottom plate connected with the bottom wall of the mounting shell and enclosing to form a distribution cavity, and the bottom plate is provided with a third air inlet hole for communicating the outside with the distribution cavity.

In one embodiment, the combustion chamber structure further includes a second partition connected to an outer side wall of the mounting case and located between the injection hole and the bottom plate in an axial direction of the combustion chamber.

In one embodiment, a side wall of the mounting shell corresponding to the injection hole is provided with a communication hole for communicating the air inlet channel and the assembly gap.

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

a gas heat exchange device comprises the combustion chamber structure.

Compared with the background technology, the gas heat exchange device of the utility model has the following beneficial effects: the air flows in the cooling flow channel, so that the inner shell and the outer shell can be cooled and cooled, and the influence on the normal operation of electrical elements caused by overhigh temperature is avoided; meanwhile, air flows into the combustion chamber from different directions and parts to participate in combustion, so that the combustion is more sufficient, the combustion working condition is improved, and the performance of the whole machine is improved. And the air exchanges heat in the cooling runner, and the air enters the combustion chamber for combustion after being heated, so that the combustion condition is improved, and the performance of the whole machine is improved. Moreover, the air exchanges heat in the cooling flow channel and enters the air inlet channel, the air inlet gap and the assembly gap after being heated up, the outside and the inside of the burner assembly can be preheated, so that the mixing of the gas and the air is quicker and more sufficient, and the combustion efficiency is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

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 structural diagram of a gas heat exchange device according to an embodiment;

FIG. 2 is a cross-sectional view of the combustion chamber structure of the gas heat exchange device of FIG. 1 from a perspective;

FIG. 3 is a sectional view of the combustion chamber structure of the gas heat exchange device of FIG. 1 from another perspective;

FIG. 4 is an exploded view of the combustion chamber structure of the gas heat exchange device of FIG. 1;

FIG. 5 is an exploded view from a perspective of the combustion chamber structure of the gas heat exchange device of FIG. 1;

fig. 6 is an exploded view of a burner assembly of the combustion chamber structure of fig. 1.

Reference numerals:

100. a combustion chamber housing; 110. an inner housing; 111. a combustion chamber; 112. second flanging; 120. an outer housing; 121. a first flanging; 122. avoiding a gap; 123. supporting a flanging; 130. a cooling flow channel; 131. a first air intake hole; 132. a first air outlet hole; 200. a burner assembly; 210. fire holes; 220. an assembly gap; 230. an intake gap; 240. an injection hole; 250. installing a shell; 251. a bottom wall; 2511. a second air intake hole; 252. an air inlet; 253. a communicating hole; 260. fire is discharged; 270. a base plate; 271. a third air inlet hole; 280. a distribution chamber; 300. an air intake passage; 400. a first separator; 500. a heat exchanger; 600. an insulating element.

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, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

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 utility model 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 utility model.

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," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate 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, as shown in fig. 1, a gas heat exchange device is provided, comprising a heat exchanger 500 and a combustion chamber structure. Wherein, the combustion chamber structure can produce high temperature flue gas, thereby the heat transfer medium such as water is heated to carrying out the heat transfer behind the high temperature flue gas inflow heat exchanger 500 heat transfer intracavity.

The heat exchanger 500 may be a combination of an existing heat exchange tube and a heat exchange fin, and will not be described herein.

For the convenience of explaining the principle of the embodiments of the present application, the heat exchanger 500 is disposed above the combustion chamber structure, i.e. the high-temperature flue gas flows from bottom to top, and those skilled in the art should not understand the limitation of the embodiments of the present application.

As shown in fig. 2 to 4, the combustor structure optionally includes a combustor casing 100 and a burner assembly 200.

As shown in fig. 2 to 4, the combustor casing 100 includes an inner casing 110 and an outer casing 120.

Alternatively, the inner housing 110 and the outer housing 120 may be both of a frame structure with the periphery closed and the upper and lower ends open.

As shown in fig. 2 to 4, in particular, the inner shell 110 is provided with a combustion chamber 111 communicating with the heat exchange chamber. And, the inner housing 110 is disposed in the outer housing 120, and at the same time, the inner housing 110 and the outer housing 120 are disposed at an interval to form a cooling flow passage 130 having a first air inlet hole 131 and a first air outlet hole 132. Thus, air with lower outside temperature enters the cooling flow channel 130 through the first air inlet 131, so that the inner shell 110 and the outer shell 120 can be cooled and cooled, and the influence on the normal operation of electrical components caused by overhigh temperature is avoided; the air in the cooling flow passage 130 flows through the first outlet hole 132, so that the air with lower external temperature can continuously flow into the cooling flow passage 130 through the first inlet hole 131.

As shown in fig. 2, 3 and 6, at least two fire holes 210 are formed at a distance from each other at the top of the burner assembly 200. In this way, the mixture of gas and air is ignited by the igniter at the fire hole 210 to generate high temperature flue gas.

As shown in fig. 2, 3 and 6, an assembly gap 220 is formed between two adjacent fire holes 210. The bottom of the burner assembly 200 is provided with an intake gap 230 communicating with the assembly gap 220.

Wherein, the burner assembly 200 is integrally installed in the combustion chamber housing 100 by means of screw connection or welding.

Preferably, the burner assembly 200 is detachably connected to the combustion chamber housing 100 by means of bolts, which facilitates the modular design of the burner assembly and the combustion chamber housing, and has high standardization, easy assembly and disassembly, and high assembly efficiency.

Specifically, the burner assembly 200 is at least partially disposed within the outer housing 120, while an outer sidewall of the burner assembly 200 is spaced from the outer housing 120 to form an intake passage 300.

Specifically, as shown in fig. 2 and 3, the intake passage 300 communicates with the first outlet hole 132, the combustion chamber 111, and the intake gap 230. And, in the axial direction of the combustion chamber 111 (as shown in the direction a of fig. 2), at least two fire holes 210 are provided in the combustion chamber 111 above the first outlet holes 132. Therefore, air flowing out of the first air outlet hole 132 enters the air inlet channel 300, one part of the air in the air inlet channel 300 directly flows into the combustion cavity 111 to participate in combustion, and the other part of the air enters the air inlet gap 230 and enters the assembly gap 220 and then enters the combustion cavity 111 to participate in combustion, so that sufficient air is guaranteed to participate in combustion, the combustion working condition is improved, and the performance of the whole machine is improved.

More specifically, because along the axial of combustion chamber 111, fire hole 210 is located the top of first venthole 132, and fire hole 210 is located the top position of first venthole 132 on vertical direction promptly to make the air that first venthole 132 department flows out get into air intake channel 300 in the back, partly direct upwards flow and get into combustion chamber 111 and participate in the burning, another part downwards flow and get into combustion chamber 111 and participate in the burning after passing through air intake gap 230 and fitting gap 220, make the air flow into combustion chamber 111 from different position and participate in the burning, the burning is more abundant, improve the combustion condition, promote complete machine performance. In addition, the air exchanges heat in the cooling flow channel 130, is heated and then enters the combustion chamber 111 for combustion, which is also beneficial to improving the combustion condition and improving the performance of the whole machine. Meanwhile, the air exchanges heat in the cooling flow channel 130, and enters the air inlet channel 300, the air inlet gap 230 and the assembly gap 220 after being heated up, so that the exterior and the interior of the burner assembly 200 can be preheated, the mixing of the gas and the air is quicker and more sufficient, and the combustion efficiency is improved.

As shown in fig. 4, optionally, the outer case 120 is provided with a first air intake hole 131. Preferably, the first air inlet holes 131 are disposed near the upper end of the outer casing 120, so that the cooling flow channel 130 can extend from the upper end to the lower end of the outer casing 120, thereby enhancing the cooling effect.

Of course, in other embodiments, one or more first air inlet holes 131 may be disposed at any position from the upper end to the lower end of the outer casing 120, and only the requirement of air intake needs to be satisfied.

As shown in fig. 2 and 3, optionally, the lower end of the inner shell 110 is spaced apart from the outer shell 120 to form a first air outlet 132, so that the lower end of the inner shell 110 is located above the lower end of the outer shell 120. And, in the vertical direction, the lower end of the inner housing 110 is located below the fire hole 210, ensuring that a part of the air entering the air intake passage 300 can directly enter the combustion chamber 111, and the other part enters the air intake gap 230 and enters the assembly gap 220 and then enters the combustion chamber 111.

The direct assembly of the outer shell 120 and the inner shell 110 may be achieved by welding, screwing, or clamping, and only the outer shell 120 and the inner shell 110 need to directly form the cooling channel 130.

As shown in fig. 2 and 4, optionally, the upper end of the outer shell 120 is provided with a first flange 121 extending away from the inner shell 110, and the first flange 121 is provided with a first clamping portion. The upper end of the inner shell 110 is provided with a second flanging 112 extending towards the direction close to the outer shell 120, and the second flanging 112 is provided with a second clamping portion matched with the first clamping portion in a clamping manner. So, when installing interior casing 110 in shell body 120, make second turn-ups 112 be located first turn-ups 121's top and make second turn-ups 112 and first turn-ups 121 laminate each other, simultaneously, combine the joint cooperation of second joint portion and first joint portion, thereby simple, convenient accomplish the assembly with shell body 120 and interior casing 110, and make shell body 120 and interior casing 110 interval set up and form cooling flow channel 130, the dismouting is efficient.

The first clamping portion and the second clamping portion can be in the form of clamping teeth and clamping grooves, and can also be in the form of clamping hooks and clamping buckles.

In addition, in consideration of convenience of processing, both the outer case 120 and the inner case 110 may be provided in a split structure. For example, the outer casing 120 may be processed into a frame with three closed sides and one open side, and the opening may be closed by the assembly connection of the sealing plate and the frame, so as to obtain the outer casing 120 with four closed sides and two open upper and lower ends. Similarly, the inner housing 110 may be processed in a similar manner, and will not be described in detail herein.

Meanwhile, in order to facilitate installation, corresponding elements such as an installation bracket and the like can be further arranged on the outer side wall of the outer shell 120, so that the whole combustion chamber structure is convenient to assemble and fix with the outside.

Wherein, the direct interval of shell body 120 and interior casing 110, the width of cooling runner 130 promptly can carry out nimble design or adjustment according to actual cooling demand, for example can be 5mm or other, only need guarantee the cooling effect can.

As shown in fig. 3 and 6, the burner assembly 200 further has at least two injection holes 240 on one side portion between the top and the bottom.

Specifically, each injection hole 240 is correspondingly communicated with at least one fire hole 210, so that each injection hole 240 mixes external air and fuel gas and then flows out from the corresponding fire hole 210 to be ignited by an igniter to burn to obtain high-temperature flue gas.

In addition, the burner assembly 200 is fixed to the outer casing 120.

As shown in fig. 4 and 5, optionally, the outer shell 120 is provided with a clearance gap 122 correspondingly communicated with the injection hole 240. Thus, each injection hole 240 is communicated with the outside from the clearance gap 122 to feed air. Furthermore, the lower end of the outer housing 120 is provided with a support flange 123 extending toward the direction close to the burner assembly 200, so that the support flange 123 can be used to cooperate with the support of the burner assembly 200 to support and position the burner assembly 200. Moreover, the burner assembly 200 can be simply and conveniently installed and dismantled from the clearance gap 122, and the dismounting efficiency is improved.

Certainly, in the actual installation process, in order to ensure the reliability of the installation and fixation of the burner assembly 200 and the outer shell 120, after the burner assembly 200 is supported by the support flange 123, the connection and fixation can be further realized by means of a screw connection mode and the like.

Further, to avoid the influence of the intake air at the first intake holes 131 on the intake air at the injection hole 240.

As shown in fig. 3-5, the combustion chamber structure optionally further comprises a first divider 400.

Specifically, the first partition 400 is connected to the outer sidewall of the outer case 120 by screwing, welding, or the like. And, along the axial of combustion chamber 111, first separator 400 is located between first inlet port 131 and draw the jet hole 240, promptly along vertical direction, first separator 400 is located the below of first inlet port 131 and draw the jet hole 240's top to utilize first separator 400 can separate the space that the draw jet hole 240 was located and the space that first inlet port 131 was located, avoid drawing the air admission of jet hole 240 department to receive interference or influence, guarantee that the air can get into in drawing the jet hole 240 with the horizontal direction, guarantee air admission quality and combustion conditions.

The first separator 400 may be in the form of a separator or a separator cover, and only needs to separate the space where the injection hole 240 is located from the space where the first air inlet 131 is located without affecting each other.

In addition, in actual use, the combustion power of the burner assembly 200 needs to be flexibly adjusted or designed to meet different use requirements.

As shown in FIG. 6, the burner assembly 200 optionally includes a mounting housing 250 and at least two fire rows 260.

Wherein, installation casing 250 is equipped with the installation cavity and sets up installation department (not mark) on the inside wall of installation cavity at least two intervals to can arrange 260 and at least two installation departments one-to-one with two at least fires and install, thereby be convenient for according to the nimble increase of in-service use needs (needs of model, loaded needs etc.) or reduce the quantity of arranging 260, be favorable to combustor assembly 200's modular design, the commonality is strong, and standardized degree is high, can reduce development cost.

After the at least two fire rows 260 are installed in one-to-one correspondence with the at least two installation parts, the two adjacent fire rows 260 are arranged at intervals to form the assembly gap 220.

Moreover, the top of each fire row 260 all is equipped with fire hole 210, and the bottom of each fire row 260 all sets up with the diapire 251 interval of installation cavity and forms the compartment, and installation casing 250 still is equipped with the air inlet 252 with the compartment intercommunication, and air inlet 252 and compartment intercommunication form air inlet gap 230. Meanwhile, one side of each fire row 260 is provided with an injection hole 240, and the injection holes 240 are correspondingly communicated with the fire holes 210.

Specifically, the fire rows 260 are mounted on the mounting portions in the mounting cavities in a one-to-one correspondence, and when the burner assembly 200 is assembled with the combustion chamber housing 100, the mounting case 250 is loaded into the outer case 120 from the bottom of the combustor case 100, so that one side of the fire grate 260 provided with the injection hole 240 is correspondingly communicated with the clearance gap 122 of the outer shell 120, so that the bearing flange 123 bears one side of the mounting housing 250 corresponding to the injection hole 240, so that the top of the fire row 260 protrudes into the combustion chamber 111 such that the fire holes 210 are located above the bottom end of the inner case 110, and the outer side wall of the mounting housing 250 and the inner side wall of the outer housing 120 are arranged at intervals to form an air inlet channel 300, the air inlet channel 300 is communicated with the first air outlet 132, the combustion cavity 111 and the air inlet 252, and finally the mounting housing 250 and the outer housing 120 are fixed by adopting the modes of screw joint or clamping connection and the like, so that the assembly of the burner assembly 200 and the combustion chamber housing 100 is completed. Meanwhile, the air exchanges heat in the cooling flow channel 130, and enters the air inlet channel 300, the air inlet gap 230 and the assembly gap 220 after being heated up, so that the installation shell 250 and the fire grate 260 can be preheated, the mixing of the gas and the air in the fire grate 260 is quicker and more sufficient, and the combustion efficiency is improved.

The installation connection of the installation part and the fire grate 260 can be realized by adopting a plug-in fit or a clamping fit. For example, be equipped with the socket that only needs two relative intervals to set up on the inside wall of installation cavity, each fire row 260 of fire row 260 is inserted and is located in the socket, is convenient for increase and decrease the quantity of fire row 260.

In addition, in order to secure a sufficient intake air amount.

As shown in fig. 6, optionally, the bottom wall 251 of the installation cavity is provided with a second air inlet hole 2511 for communicating the outside with the air intake gap 230. So, can utilize in second inlet hole 2511 inhales intake gap 230 with the air of external world, rethread intake gap 230 gets into in the fitting gap 220 to make more air get into combustion chamber 111 and participate in the burning, make the burning more abundant, improve the burning operating mode.

Of course, too much air entering the combustion chamber 111 may also affect the combustion conditions in the combustion chamber 111.

As shown in fig. 3, 5 and 6, optionally, the burner assembly 200 further includes a bottom plate 270, and the bottom plate 270 is connected to the bottom wall 251 of the mounting housing 250 by screwing, clipping, etc. and encloses a distribution chamber 280 communicated with the second air inlet hole 2511. Meanwhile, the bottom plate 270 is provided with a third air inlet 271 for communicating the outside with the distribution chamber 280. Therefore, the air inflow of the air inlet gap 230 through the distribution cavity 280 can be adjusted by flexibly designing or adjusting the air inflow at the third air inlet 271 according to the actual air inlet demand, so that the air inflow of the air into the combustion cavity 111 is adjusted, and the air participating in combustion in the combustion cavity 111 is ensured not to be too little or excessive.

Specifically, the number of the second air inlet holes 2511 is at least two, and the at least two second air inlet holes 2511 are uniformly distributed on the bottom wall 251 of the installation shell 250 in an array manner, so that the air inflow from the third air inlet hole 271 can be adjusted by flexibly designing or adjusting the diameter of the third air inlet hole 271.

Preferably, each of the second air intake holes 2511 is located directly below the installation gap.

Further, the influence of the intake air at the second intake holes 2511 or the third intake holes 271 on the intake air at the injection hole 240 is avoided.

Optionally, the combustion chamber structure further comprises a second partition (not shown).

Specifically, the second partition is connected to the outer sidewall of the mounting case 250 by screwing, welding, or the like. And, along the axial of combustion chamber 111, the second separator is located between injection hole 240 and bottom plate 270, along vertical direction promptly, the second separator is located the below of injection hole 240 and the top of bottom plate 270 to utilize the second separator can separate the space that the injection hole 240 was located and the space that second inlet hole 2511 department was located or the space that third inlet hole 271 was located, avoid the air inlet of injection hole 240 department to receive interference or influence, guarantee that the air can get into in the injection hole 240 with the horizontal direction, guarantee air-intake quality and combustion condition.

The second partition may be in the form of a partition plate or a partition cover, and only the space where the injection hole 240 is located and the space where the second air inlet 2511 is located or the space where the third air inlet 271 is located need to be separated without mutual influence.

In addition, in order to ensure the fluidity of the air in the intake passage 300 above the support flange 123.

As shown in fig. 3 and 6, a communication hole 253 for communicating the air inlet passage 300 with the assembly gap 220 may be optionally provided on a side wall of the mounting housing 250 corresponding to the injection hole 240. So for the air in the inlet channel 300 of bearing turn-ups 123 top, partly can directly get into combustion chamber 111 and participate in the burning, another part passes and gets into in assembly gap 220 and finally get into the combustion chamber 111 and burn after passing the intercommunicating pore 253 in, makes the air flow into combustion chamber 111 from different position and participates in the burning, and the burning is more abundant, improves the burning operating mode, promotes complete machine performance.

In addition, in order to avoid the excessive heat in the heat exchange cavity from being transferred to the shell of the heat exchanger 500, the upper end of the inner shell 110 may be provided with heat insulation elements 600 such as heat insulation plates by means of screwing and the like, so that the heat insulation elements 600 such as heat insulation plates extend into the heat exchange cavity, and the heat insulation elements 600 such as heat insulation plates and the shell of the heat exchanger 500 are arranged at intervals to form heat insulation gaps, thereby isolating the heat and reducing the temperature on the surface of the heat exchanger 500.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within 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 specific and detailed, but not to be construed as limiting the scope of the utility model. 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. A combustion chamber construction, comprising:

the combustor casing (100) comprises an inner casing (110) and an outer casing (120), the inner casing (110) is provided with a combustion cavity (111), and the inner casing (110) is arranged in the outer casing (120) and is arranged at intervals with the outer casing (120) to form a cooling flow channel (130) with a first air inlet hole (131) and a first air outlet hole (132);

burner assembly (200), the top of burner assembly (200) is equipped with fire hole (210) that two at least intervals set up and is located adjacent two assembly gap (220) between fire hole (210), the bottom of burner assembly (200) be equipped with air intake gap (230) of assembly gap (220) intercommunication, burner assembly (200) at least part set up in shell body (120) and with shell body (120) interval set up form with first venthole (132), combustion chamber (111) and air intake gap (230) air intake passage (300) that all communicate, and follow the axial of combustion chamber (111), two at least fire hole (210) all set up in combustion chamber (111) and lie in the top of first venthole (132).

2. The combustion chamber structure of claim 1, wherein the outer shell (120) is provided with the first air inlet hole (131), the lower end of the inner shell (110) and the outer shell (120) are separated to form the first air outlet hole (132), the upper end of the outer shell (120) is provided with a first flanging (121) extending towards the direction deviating from the inner shell (110), the first flanging (121) is provided with a first clamping portion, the upper end of the inner shell (110) is provided with a second flanging (112) extending towards the direction close to the outer shell (120) and attached to the first flanging (121), and the second flanging (112) is provided with a second clamping portion clamped and matched with the first clamping portion.

3. The combustion chamber structure of claim 1, wherein at least two injection holes (240) are formed in one side portion of the combustor assembly (200), each injection hole (240) is correspondingly communicated with at least one fire hole (210), the outer shell (120) is provided with a clearance gap (122) correspondingly communicated with the injection hole (240), a bearing flanging (123) extending towards the direction close to the combustor assembly (200) is formed in the lower end of the outer shell (120), and the bearing flanging (123) is in bearing fit with the combustor assembly (200).

4. The combustion chamber structure according to claim 3, further comprising a first partition (400), wherein the first partition (400) is connected to an outer side wall of the outer casing (120), and the first partition (400) is located between the first intake hole (131) and the injection hole (240) in an axial direction of the combustion chamber (111).

5. The combustion chamber structure of any one of claims 1 to 4, wherein the burner assembly (200) comprises a mounting housing (250) and at least two fire banks (260), the mounting housing (250) is provided with a mounting cavity and at least two mounting portions arranged on the inner side wall of the mounting cavity at intervals, the at least two fire banks (260) and the at least two mounting portions are mounted in a one-to-one correspondence manner, the two adjacent fire banks (260) are arranged at intervals to form the assembly gap (220), the top end of each fire bank (260) is provided with the fire hole (210), the bottom end of each fire bank (260) is arranged at intervals to form a spacing cavity with the bottom wall (251) of the mounting cavity, and the mounting housing (250) is further provided with an air inlet (252) communicated with the spacing cavity to form the air inlet gap (230).

6. The combustion chamber structure according to claim 5, wherein a bottom wall (251) of the installation cavity is provided with a second intake hole (2511) for communicating the outside with the intake gap (230).

7. The combustion chamber structure according to claim 6, characterized in that the burner assembly (200) further comprises a bottom plate (270) connected to the bottom wall (251) of the mounting housing (250) and enclosing a distribution chamber (280), the bottom plate (270) being provided with a third air inlet hole (271) for communicating the outside with the distribution chamber (280).

8. The combustion chamber structure according to claim 7, further comprising a second partition connected to an outer side wall of the mounting housing (250) and located between the injection hole (240) and the bottom plate (270) in an axial direction of the combustion chamber (111).

9. The combustion chamber structure according to claim 5, wherein a side wall of the mounting case (250) corresponding to the injection hole (240) is provided with a communication hole (253) for communicating the intake passage (300) with the assembly gap (220).

10. A gas heat exchange device comprising a combustor structure as claimed in any one of claims 1 to 9.

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