CN219318483U - Air-cooled box of gas water heater and gas water heater - Google Patents

Abstract

The utility model belongs to the technical field of heat supply, and particularly discloses an air-cooled box of a gas water heater and the gas water heater. The air-cooled box body comprises an outer shell, an inner shell and at least one inner partition frame; the outer shell is sleeved outside the inner shell, an air cooling cavity is arranged between the outer shell and the inner shell, a combustion chamber is arranged inside the inner shell, an air inlet hole is formed in the outer shell, an air outlet hole is formed in the inner shell, and the air outlet hole is communicated with the combustion chamber; the inner partition frame is arranged between the outer shell and the inner shell, at least one inner partition frame divides the air cooling cavity into at least two layers of air cooling flow channels, one ends of the adjacent two layers of air cooling flow channels are mutually communicated to form a U-shaped flow channel, and the air inlet hole is communicated with the air outlet hole through the air cooling flow channels. According to the air-cooled box body disclosed by the utility model, one ends of two adjacent layers of air-cooled flow channels are mutually communicated to form the U-shaped flow channel so as to reduce air flow resistance, prolong a flow path, effectively cool the box body, and avoid too fast temperature rise or long-term overheating, so that the box body of the combustion chamber of the gas water heater has a good cooling effect.

Description

Air-cooled box of gas water heater and gas water heater

Technical Field

The utility model relates to the technical field of heat supply, in particular to an air-cooled box body of a gas water heater and the gas water heater.

Background

The gas water heater is a device for heating cold water flowing through a heat exchanger through heat exchange by providing heat energy through combustion of combustible gas, and is provided with a combustion chamber, wherein a shell of the combustion chamber is generally made of copper sheets, and oxygen-free copper has the advantages of good processing performance, welding performance, corrosion resistance, low temperature performance and the like. The oxygen-free copper can change color when meeting high temperature, and the heat exchange efficiency of the gas water heater can be influenced by the over-fast temperature rise of the shell and long-term overheating. Therefore, in the prior art, a part of gas water heater is provided with an air cooling device, so that the surface temperature rise of the combustion chamber is reduced in an air cooling mode, but the part of air cooling device still has the problems of higher surface temperature rise of the combustion chamber or complex structure and the like caused by poor cooling performance.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide an air-cooled box body of a gas water heater, which has an air-cooled runner with a good cooling effect, can effectively cool down, avoids over-fast temperature rise or long-term overheating, and has a simple structure.

The second technical problem to be solved by the utility model is to provide the gas water heater, wherein the box body of the combustion chamber of the gas water heater has a good cooling effect.

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

an air-cooled tank of a gas water heater is provided, comprising:

the combustion device comprises an outer shell and an inner shell, wherein the outer shell is sleeved outside the inner shell, an air cooling cavity is arranged between the outer shell and the inner shell, a combustion chamber is arranged in the inner shell, an air inlet hole is formed in the outer shell, an air outlet hole is formed in the inner shell, and the air outlet hole is communicated with the combustion chamber;

at least one inner bulkhead is arranged between the outer shell and the inner shell, at least one inner bulkhead separates the air cooling cavity into at least two layers of air cooling channels, one ends of the air cooling channels of two adjacent layers are mutually communicated to form a U-shaped channel, and the air inlet is communicated with the air outlet through the air cooling channels.

Compared with the background technology, the air-cooled box body of the gas water heater has the following beneficial effects: the inner partition frame separates the outer shell and the inner shell into at least two layers of air cooling flow channels, and one ends of the air cooling flow channels of two adjacent layers are communicated with each other to form a U-shaped flow channel; the heat exchange and the temperature rise of the external air and the heat exchange of the external shell, the internal shell and the internal partition frame are continuously carried out in the flowing process of the multi-layer air cooling flow channel, so that the temperature of the external shell and the internal shell is reduced, and the condition that the temperature of the air cooling type box body rises too fast or is overheated for a long time is prevented. The air after heat exchange and temperature rising can enter the combustion chamber from the air outlet, so that secondary supplementary air is provided for the combustion chamber, on one hand, the combustion efficiency is improved, and on the other hand, the condition that the heat exchange efficiency of the heat exchanger is reduced and energy waste is caused due to the fact that the air in the air cooling flow passage is directly discharged through the heat exchanger can be prevented. The multi-layer air cooling flow channels prolong the flow paths of air, so that the heat exchange between the air and the outer shell and between the air and the inner shell is more complete; in addition, the structure of the U-shaped flow channel can reduce the internal resistance of the air cooling flow channel, the air has better fluidity when entering the adjacent air cooling flow channel from one air cooling flow channel, the turbulence phenomenon is avoided, the air inlet quantity of the air inlet hole is further improved, and the heat exchange efficiency can be further improved.

In one embodiment, the air-cooled box body is provided with a plurality of inner partition frames, and the inner partition frames are parallel to each other and are arranged between the outer shell body and the inner shell body at intervals so as to form a plurality of U-shaped flow channels.

In one embodiment, the plurality of U-shaped flow channels are sequentially communicated end to form an S-shaped flow channel, so that air in adjacent air cooling flow channels flows in opposite directions.

In one embodiment, the air outlet is provided at a lower portion of the inner case.

In one embodiment, the air inlet is provided at an upper portion or a lower portion of the outer case.

In one embodiment, the outer casing includes peripheral front bezel, peripheral left panel, peripheral back bezel and peripheral right panel that connect gradually, the inner casing includes interior front bezel, interior left panel, interior back bezel and interior right panel that connect gradually, the forced air cooling chamber includes first forced air cooling chamber, second forced air cooling chamber, third forced air cooling chamber and the fourth forced air cooling chamber of mutual isolation, first forced air cooling chamber set up in peripheral front bezel with interior between the front bezel, the second forced air cooling chamber set up in peripheral left panel with interior between the left panel, the third forced air cooling chamber set up in peripheral back panel with interior between the back panel, the fourth forced air cooling chamber set up in peripheral right panel with interior between the right panel.

In one embodiment, the air inlet holes are provided in a plurality, and the air inlet holes are uniformly distributed at intervals along the horizontal direction of the air-cooled box body.

In one embodiment, a plurality of air outlet holes are formed, and the air outlet holes are uniformly distributed at intervals along the horizontal direction of the air-cooled box body.

In one embodiment, the inner spacer comprises a plurality of inner spacers, each inner spacer comprises a spacer and a bending flange, each bending flange is arranged on the edge of each spacer in a surrounding mode, and each bending flange is connected to the outer shell or the inner shell, so that an air cooling flow channel is formed between each spacer and the outer shell and between each spacer and the inner shell.

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

the utility model provides a gas heater, including foretell gas heater's air-cooled box still includes the combustor, the combustor can dismantle connect in the air-cooled box.

Compared with the background technology, the gas water heater has the following beneficial effects: the gas water heater is provided with the air-cooled box body of the gas water heater, combustion flame generated by the burner conveys high-temperature flue gas into the air-cooled box body, at least two layers of air-cooled flow channels are arranged between the outer shell and the inner shell of the air-cooled box body, the multi-layer air-cooled flow channels prolong the flow path of air, so that the external air entering through the air inlet holes can sufficiently exchange heat and cool the air-cooled box body, the condition that the temperature of the air-cooled box body rises too fast or is overheated for a long time is prevented, and the air after heat exchange in the air-cooled flow channels is discharged to the combustion chamber, so that the conditions of reducing the heat exchange efficiency and energy waste of the heat exchanger are avoided; the U-shaped flow passage can reduce the internal resistance of the air cooling flow passage, improve the air inlet quantity of the air inlet hole and enhance the heat exchange efficiency of the air cooling box body.

Drawings

Fig. 1 is a schematic diagram illustrating a disassembled structure of an air-cooled case according to a first embodiment of the present utility model;

fig. 2 is a schematic diagram showing a disassembled structure of an air-cooled case according to a first embodiment of the present utility model;

fig. 3 is a schematic diagram showing a disassembled structure of an air-cooled case according to an embodiment of the present utility model;

fig. 4 is a structural cross-sectional view of an air-cooled case according to a first embodiment of the present utility model;

fig. 5 is a structural cross-sectional view of an air-cooled case provided in a second embodiment of the present utility model;

fig. 6 is a schematic diagram of a portion of a gas water heater according to a third embodiment of the present utility model.

Description of the reference numerals:

1. an outer housing; 11. an air inlet hole; 12. a peripheral front plate; 13. a peripheral left plate; 14. a peripheral back plate; 15. a peripheral right plate; 2. an inner housing; 20. a combustion chamber; 21. an air outlet hole; 22. an inner peripheral front plate; 23. an inner left plate; 24. an inner peripheral back plate; 25. an inner peripheral right plate; 3. an air cooling cavity; 31. an air cooling runner; 32. a first air-cooling chamber; 33. a second air cooling chamber; 34. a third air cooling chamber; 35. a fourth air cooling chamber; 4. an inner spacer; 41. an inner partition; 411. a partition plate; 412. bending and flanging;

100. a burner.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements 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 application.

The terms "first," "second," and "third" 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 defining "a first", "a second", and "a third" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Example 1

An embodiment of the present utility model provides an air-cooled tank of a gas water heater, as shown in fig. 1 to 4, the air-cooled tank includes an outer casing 1, an inner casing 2, and at least one inner bulkhead 4. The outer shell 1 is sleeved outside the inner shell 2, an air cooling cavity 3 is arranged between the outer shell 1 and the inner shell 2, a combustion chamber 2 is arranged inside the inner shell 2, an air inlet 11 is formed in the outer shell 1, the air inlet 11 is communicated with the air cooling cavity 3, and the air inlet 11 can introduce external air into the air cooling cavity 3. The shell 2 is provided with an air outlet 21, and the air outlet 21 is communicated with the combustion chamber 2. The inner partition frame 4 is arranged between the outer shell 1 and the inner shell 2, at least one inner partition frame 4 divides the air cooling cavity 3 into at least two layers of air cooling flow channels 31, one ends of the air cooling flow channels 31 of two adjacent layers are mutually communicated to form a U-shaped flow channel, and the air inlet hole 11 is communicated with the air outlet hole 21 through the air cooling flow channels 31. The outside air flows in the multi-layer air cooling flow channel 31, and the air can continuously exchange heat with the outer shell 1, the inner shell 2 and the inner partition frame 4 in the flowing process, so that the temperature of the outer shell 1 and the inner shell 2 is reduced, and the condition that the temperature of the air-cooled box body rises too fast or is overheated for a long time is avoided. The air after heat exchange and temperature rise can enter the combustion chamber 2 from the air outlet 21 to provide secondary supplementary air for the combustion chamber, so that the combustion efficiency is improved on one hand, and the condition that the heat exchange efficiency of the heat exchanger is reduced and energy waste is caused due to the fact that the air in the air cooling flow passage is directly discharged through the heat exchanger can be prevented on the other hand. The multi-layer air cooling flow channels 31 prolong the flow paths of the air, so that the heat exchange between the air and the outer shell 1 and the heat exchange between the air and the inner shell 2 are more sufficient; moreover, the structure of the U-shaped flow channel can reduce the internal resistance of the air cooling flow channel 31, the air has better fluidity when entering the adjacent air cooling flow channel 31 from one air cooling flow channel 31, the turbulence phenomenon is avoided, the air inlet quantity of the air inlet hole 11 is further improved, and the heat exchange efficiency can be further improved.

Preferably, the air outlet 21 is provided in the lower portion of the inner case 2. The air cooling flow passage 31 at the innermost layer is communicated with the air outlet hole 21, so that the air subjected to heat exchange in the air cooling flow passage 31 enters the combustion chamber 2 from the air outlet hole 21 to supplement secondary air for the combustion chamber 2, and the condition that the heat exchange temperature rise is reduced and the heat exchange efficiency is influenced due to the fact that the air is directly discharged through the air cooling type box body is prevented; moreover, the air outlet hole 21 is arranged at the lower part of the inner shell 2, so that the influence of air discharged from the air outlet hole 21 on the combustion flame can be avoided, and the normal combustion state of the combustion flame can be influenced by air which is poured from top to bottom; when the air outlet 21 is arranged at the lower part of the inner shell 2, the flowing air is closer to the combustion flame, and gathers the combustion flame from the periphery to the middle of the air cooling cavity 3, so that the stability of the combustion flame can be further ensured, the effects of gathering the flame and reducing radiation are achieved, and the temperature rise of the air cooling type box body is further lightened.

Accordingly, the air inlet 11 is disposed at the upper or lower portion of the outer casing 1, and the coordinate system in fig. 4 indicates the direction in which the air-cooled casing of the present embodiment is connected to the whole apparatus. It can be understood that, because the air cooling channels 31 of two adjacent layers form a U-shaped channel, in order to ensure that the air outlet 21 is disposed at the lower portion of the inner casing 2, when the air cooling channels 31 are two layers, such as two layers, four layers, etc., the air inlet 11 is disposed at the lower portion of the outer casing 1; when the air cooling flow passage 31 has a single layer, such as three layers, five layers, or the like, the air inlet 11 is provided at the upper portion of the outer case 1 (refer to fig. 5 of the second embodiment).

As a preferred scheme, the outer shell 1 comprises a peripheral front plate 12, a peripheral left plate 13, a peripheral rear plate 14 and a peripheral right plate 15 which are sequentially connected, the inner shell 2 comprises an inner peripheral front plate 22, an inner peripheral left plate 23, an inner peripheral rear plate 24 and an inner peripheral right plate 25 which are sequentially connected, the air cooling cavity 3 comprises a first air cooling cavity 32, a second air cooling cavity 33, a third air cooling cavity 34 and a fourth air cooling cavity 35 which are mutually isolated, the first air cooling cavity 33 is arranged between the peripheral front plate 12 and the inner peripheral front plate 22, the second air cooling cavity 33 is arranged between the peripheral left plate 13 and the inner peripheral left plate 23, the third air cooling cavity 34 is arranged between the peripheral rear plate 14 and the inner peripheral rear plate 24, and the fourth air cooling cavity 35 is arranged between the peripheral right plate 15 and the inner peripheral right plate 25.

Specifically, the air-cooled case of the embodiment of the present utility model has an approximately rectangular parallelepiped structure, and has four sides, so that the outer case 1 includes a peripheral front plate 12, a peripheral left plate 13, a peripheral rear plate 14, and a peripheral right plate 15, which are sequentially connected, and the inner case 2 includes an inner peripheral front plate 22, an inner peripheral left plate 23, an inner peripheral rear plate 24, and an inner peripheral right plate 25, which are sequentially connected; correspondingly, a first air cooling cavity 32 is formed between the peripheral front plate 12 and the inner peripheral front plate 22, a second air cooling cavity 33 is formed between the peripheral left plate 13 and the inner peripheral left plate 23, a third air cooling cavity 34 is formed between the peripheral rear plate 14 and the inner peripheral rear plate 24, a fourth air cooling cavity 35 is formed between the peripheral right plate 15 and the inner peripheral right plate 25, the four cavities are isolated from each other, and at least two layers of air cooling channels 31 are respectively formed in each cavity to form a U-shaped channel. The first air cooling cavity 32, the second air cooling cavity 33, the third air cooling cavity 34 and the fourth air cooling cavity 35 which are isolated from each other are mutually independent to perform air cooling, so that the turbulence condition caused by different internal wind resistances of different side surfaces of the air cooling type box body can be avoided, and each side surface can be uniformly cooled.

Preferably, a plurality of air inlet holes 11 are provided, and correspondingly, a plurality of air outlet holes 21 are provided. The air inlet holes 11 are uniformly distributed at intervals along the horizontal direction of the air-cooled housing, and the air outlet holes 21 are uniformly distributed at intervals along the horizontal direction of the air-cooled housing. The arrangement mode of the air inlet holes 11 with uniform intervals in the horizontal direction can ensure uniform air inlet and stable air inlet quantity, so that the air cooling effect on the air-cooled box body is stable; the air outlet holes 21 are uniformly arranged at intervals in the horizontal direction, so that the air outlet quantity can be ensured to be stable, and the condition that combustion flame is inclined to shake due to air outlet is avoided, so that the combustion performance is influenced is avoided.

As a preferred solution, the inner bulkhead 4 includes a plurality of enclosed inner partition plates 41, as shown in fig. 1, the inner partition plates 41 include partition plates 411 and bending flanges 412, the bending flanges 412 are enclosed at edges of the partition plates 411, and the bending flanges 412 are connected to the outer casing 1 or the inner casing 2, so that air cooling channels 31 are formed between the partition plates 411 and the outer casing 1 and between the partition plates 411 and the inner casing 2. The inner partition 41 can be connected to the outer casing 1 or the inner casing 2 by bending the flange 412, and gaps are provided between the partition 411 and the outer casing 1 and between the partition 411 and the inner casing 2. As shown in fig. 4, the inner partition 41 is connected to the outer case 1 by a bent flange 412. When the bending flange 412 is bent toward the inner casing 2, the inner partition 41 may also be connected to the inner casing 2 to separate the air cooling chamber 3, which is within the protection scope of the present application.

Example two

The second embodiment of the utility model provides an air-cooled box body of a gas water heater, as shown in fig. 5, the air-cooled box body comprises an outer shell body 1 and an inner shell body 2 which are the same as those in the first embodiment, the outer shell body 1 is sleeved outside the inner shell body 2, an air-cooled cavity 3 is arranged between the outer shell body 1 and the inner shell body 2, a combustion chamber 2 is arranged inside the inner shell body 2, an air inlet 11 is arranged on the outer shell body 1, the air inlet 11 is communicated with the air-cooled cavity 3, and external air can be introduced into the air-cooled cavity 3. The shell 2 is provided with an air outlet 21, and the air outlet 21 is communicated with the combustion chamber 2.

The second embodiment is different in that the air-cooled box body is provided with two inner partition frames 4, and the two inner partition frames 4 are parallel to each other and are arranged between the outer shell 1 and the inner shell 2 at intervals to form two U-shaped flow channels. The two U-shaped flow channels are sequentially communicated end to form an S-shaped flow channel, so that the air flowing directions in the adjacent air cooling flow channels 31 are opposite. As shown in fig. 5, two inner spacers 4 parallel to each other and spaced apart form an S-shaped flow channel, and air flows in the S-shaped flow channel, so that air flowing directions in adjacent air cooling flow channels 31 are opposite, turbulence caused by disordered flow of air in the air cooling cavity 3 can be avoided, and heat exchange and cooling effects are further affected.

Of course, when the number of the inner formers 4 is more than two, the plurality of inner formers 4 may be arranged in parallel with each other at a distance from each other, and an S-shaped flow path may be formed.

Example III

In a third embodiment of the present utility model, as shown in fig. 6, a gas water heater includes an air-cooled tank of the gas water heater in the first embodiment or the second embodiment, and the gas water heater further includes a burner 100, where the burner 100 is detachably connected to the air-cooled tank. The combustion flame generated by the burner 100 conveys high-temperature flue gas into the air-cooled box body, at least two layers of air-cooled flow channels 31 are arranged between the outer shell 1 and the inner shell 2 of the air-cooled box body, the multi-layer air-cooled flow channels 31 prolong the flow paths of air, so that the external air entering through the air inlet 11 can sufficiently exchange heat and cool the air-cooled box body, the condition that the temperature of the air-cooled box body rises too fast or is overheated for a long time is prevented, and the air after heat exchange in the air-cooled flow channels is discharged to the combustion chamber, so that the conditions of reducing the heat exchange efficiency of a heat exchanger and energy waste are avoided; the U-shaped flow passage can reduce the internal resistance of the air cooling flow passage 31, improve the air inlet quantity of the air inlet hole 11 and enhance the heat exchange efficiency of the air cooling type box body.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing detailed description of the embodiments presents only a few embodiments of the present utility model, which are described in some detail and are not intended to limit the scope of the present utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. Air-cooled box of gas heater, its characterized in that includes:

the air-cooled type air conditioner comprises an outer shell (1) and an inner shell (2), wherein the outer shell (1) is sleeved outside the inner shell (2), an air-cooled cavity (3) is arranged between the outer shell (1) and the inner shell (2), a combustion chamber (20) is arranged inside the inner shell (2), an air inlet hole (11) is formed in the outer shell (1), an air outlet hole (21) is formed in the inner shell (2), and the air outlet hole (21) is communicated with the combustion chamber (20);

at least one inner bulkhead (4), inner bulkhead (4) set up in between shell (1) and inner shell (2), at least one inner bulkhead (4) will forced air cooling chamber (3) is divided into at least two-layer forced air cooling runner (31), adjacent two-layer forced air cooling runner (31) one end intercommunication each other is in order to form U type runner, air inlet (11) pass through forced air cooling runner (31) intercommunication air outlet (21).

2. An air-cooled tank of a gas water heater according to claim 1, characterized in that the air-cooled tank is provided with a plurality of inner formers (4), the inner formers (4) being arranged parallel to each other and spaced between the outer housing (1) and the inner housing (2) to form a plurality of U-shaped flow channels.

3. An air-cooled tank of a gas water heater according to claim 2, wherein a plurality of the U-shaped flow channels are sequentially connected end to form an S-shaped flow channel, so that air flowing directions in adjacent air-cooled flow channels (31) are opposite.

4. An air-cooled tank of a gas water heater according to claim 1, characterized in that the air outlet (21) is provided in the lower part of the inner housing (2).

5. An air-cooled tank of a gas water heater according to claim 4, characterized in that the air inlet (11) is provided at the upper or lower part of the outer casing (1).

6. An air-cooled tank for a gas water heater according to any one of claims 1-5, wherein the outer housing (1) comprises a peripheral front plate (12), a peripheral left plate (13), a peripheral rear plate (14) and a peripheral right plate (15) which are sequentially connected, the inner housing (2) comprises an inner peripheral front plate (22), an inner peripheral left plate (23), an inner peripheral rear plate (24) and an inner peripheral right plate (25) which are sequentially connected, the air-cooled cavity (3) comprises a first air-cooled cavity (32), a second air-cooled cavity (33), a third air-cooled cavity (34) and a fourth air-cooled cavity (35) which are mutually isolated, the first air-cooled cavity (32) is arranged between the peripheral front plate (12) and the inner peripheral front plate (22), the second air-cooled cavity (33) is arranged between the peripheral left plate (13) and the inner peripheral left plate (23), the third air-cooled cavity (34) is arranged between the peripheral rear plate (14) and the inner peripheral rear plate (24), and the fourth air-cooled cavity (35) is arranged between the peripheral right plate (25).

7. An air-cooled tank of a gas water heater as claimed in any one of claims 1 to 5, wherein a plurality of air inlet holes (11) are provided, and a plurality of air inlet holes (11) are uniformly distributed at intervals along the horizontal direction of the air-cooled tank.

8. An air-cooled tank of a gas water heater as claimed in any one of claims 1 to 5, wherein a plurality of air outlets (21) are provided, and a plurality of air outlets (21) are uniformly distributed at intervals along the horizontal direction of the air-cooled tank.

9. An air-cooled tank for a gas water heater according to any one of claims 1-5, wherein the inner bulkhead (4) comprises a plurality of enclosed inner partition plates (41), the inner partition plates (41) comprise partition plates (411) and bending flanges (412), the bending flanges (412) are enclosed at edges of the partition plates (411), and the bending flanges (412) are connected to the outer housing (1) or the inner housing (2) so that the air-cooled flow channels (31) are formed between the partition plates (411) and the outer housing (1) and between the partition plates (411) and the inner housing (2).

10. Gas water heater, characterized in that it comprises an air-cooled tank of a gas water heater according to any one of claims 1-9, and further comprises a burner (100), said burner (100) being removably connected to said air-cooled tank.

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