Combustion chamber and gas water heater

Abstract

The combustion chamber comprises a chamber body, the chamber body comprises a first cylindrical structure formed by connecting a plurality of outer side walls in a surrounding mode and a second cylindrical structure connected in the first cylindrical structure and formed by connecting a plurality of inner side walls in a surrounding mode; the plurality of inner side walls are respectively connected to the inner sides of the plurality of outer side walls; a plurality of rows of cooling cavities are formed between the adjacent outer side walls and the inner side walls in the vertical direction. A plurality of first airflow passages are formed in the height direction from the outer side of the outer side wall to the inner side of the inner side wall by flowing through the plurality of cooling cavities; cold air flows from the outer side of the outer side wall to the inner side of the inner side wall in the vertical direction through the first airflow channel from bottom to top and then flows out. The utility model aims to provide a combustion chamber and a gas water heater to solve the problems of poor cooling effect of the upper part of the combustion chamber and the like in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of water heaters, and specifically relates to a combustion chamber and a gas water heater. Background Art

[0002] Gas water heaters have gradually become an indispensable household appliance in our lives. Gas water heaters are equipped with gas heat exchangers and combustion chambers to generate energy through combustion. Generally, after a gas water heater has been working for a long time, the combustion chamber cavity maintains a high temperature environment for a long time, causing the surface temperature of the combustion chamber to be too high, affecting the temperature of the product shell and affecting the user experience.

[0003] In the existing scheme, the combustion chamber shell is divided into two layers of plates, and the gap between the inner and outer plates is used for cooling. The outer plate is provided with through holes, and the fan is placed on the top of the whole machine. When the fan is working, the internal negative pressure of the product is used to let in cold air through the through holes of the outer plate to cool the surface. When this scheme is used to cool the combustion chamber, the surface temperature of the combustion chamber is still high. The cold air enters from the through holes at the lower end of the outer plate of the combustion chamber to the gap between the inner and outer plates. In the process of flowing to the upper end, the cold air becomes hot, and the surface temperature at the highest point is still high, which cannot achieve the overall cooling effect of the whole machine.

[0004] Therefore, a combustion chamber and a gas water heater are developed, which adopt a layered cooling method to ensure the cooling effect and have no cooling failure point. The inner wall 310 is a technical problem that needs to be solved urgently. Utility Model Content

[0005] The utility model aims to provide a combustion chamber and a gas water heater to solve the problems of poor cooling effect of the upper part of the combustion chamber in the prior art.

[0006] In order to achieve the above utility model / design purpose, the utility model adopts the following technical solutions:

[0007] In one aspect, the utility model proposes a combustion chamber, including a chamber body, which includes a first tubular structure formed by a plurality of outer walls connected in a surrounding manner and a second tubular structure formed by a plurality of inner walls connected in a surrounding manner; the plurality of inner walls are respectively connected to the inner sides of the plurality of outer walls; a plurality of rows of cooling cavities are formed along the vertical direction between adjacent outer walls and inner walls; a plurality of first airflow passages are formed along the height direction from the outside of the outer wall, flowing through the plurality of cooling cavities to the inside of the inner wall; cold air flows from the outside of the outer wall through the first airflow passage from bottom to top along the vertical direction to the inside of the inner wall and flows out.

[0008] In some embodiments of the present application, a second air flow passage is formed along an inclined direction from the outside of the outer wall, flowing through the multiple cooling chambers to the inside of the inner wall; the cold air flows from the outside of the outer wall through the second air flow passage from bottom to top along the inclined direction to the inside of the connection between the two adjacent inner walls and flows out.

[0009] In some embodiments of the present application, a plurality of first air inlets are dispersedly provided on the outer wall, and the plurality of first air inlets are respectively connected to the lower portions of the plurality of cooling cavities; a plurality of first air outlets are provided on the inner wall, and the plurality of first air outlets are respectively connected to the upper portions of the plurality of cooling cavities; the first air inlets, the cooling cavities and the first air outlets are connected to form the first air flow passage.

[0010] In some embodiments of the present application, a plurality of second air outlets are provided on the inner side wall, and the plurality of second air outlets are connected to the side of the cooling cavity; the first air inlet, the cooling cavity and the second air outlet are connected to form the second air flow passage.

[0011] In some embodiments of the present application, a plurality of the second air outlets are respectively connected to two side portions of the cooling cavity.

[0012] In some embodiments of the present application, the chamber body also includes a positioning assembly, the positioning assembly includes a positioning plug and a positioning hole, the positioning plug is connected to the outer wall, the positioning hole is opened on the inner wall, and when the inner wall and the outer wall are in an installed state, the positioning plug is inserted into the positioning hole.

[0013] In some embodiments of the present application, the chamber body further includes a plurality of elastic abutting components, the plurality of elastic abutting components are arranged at intervals at the edge of the inner wall, and the plurality of elastic abutting components abut against the outer wall.

[0014] In some embodiments of the present application, a plurality of accommodating portions are formed at intervals on the inner wall along the vertical direction, the accommodating portions are protruding toward the inner side of the inner wall, the accommodating portions and the outer wall are arranged to form the cooling cavity, the accommodating portions are extended along the horizontal direction, and a plurality of the first air outlets are arranged at intervals along the upper edge of the accommodating portions.

[0015] In some embodiments of the present application, the accommodating portion extends from one side end of the inner side wall to the other side end of the inner side wall along a horizontal direction.

[0016] In another aspect, the utility model also provides a gas water heater, comprising any of the above-mentioned combustion chambers.

[0017] Compared with the prior art, the advantages and positive effects of the utility model are:

[0018] A plurality of cooling cavities are formed between a first cylindrical structure formed by a plurality of outer side walls connected and surrounded and a second cylindrical structure formed by a plurality of inner side walls connected and surrounded, and the plurality of cooling cavities are respectively arranged between the plurality of outer side walls and the plurality of inner side walls for circumferential cooling of the chamber body;

[0019] By forming multiple cooling cavities between the inner wall and the outer wall along the height direction, the chamber body is cooled along the height direction to avoid the formation of cooling failure points; and the temperature is uniformly cooled along the height direction of the chamber body;

[0020] By entering the cooling cavity from the outside of the outer wall and from the bottom of the cooling cavity, flowing to the top of the cooling cavity until entering the inside of the inner wall, sufficient heat exchange between the gas and the outer wall, inner wall and cooling cavity is achieved, achieving a sufficient cooling effect.

[0021] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a combustion chamber proposed by the utility model;

[0024] Figure 2 It is another overall structural schematic diagram of an embodiment of a combustion chamber proposed by the utility model;

[0025] Figure 3 yes Figure 2 The local schematic diagram of the A in the middle;

[0026] Figure 4 It is a schematic diagram of the overall structure of an embodiment of an inner side wall of a combustion chamber proposed by the utility model;

[0027] Figure 5 yes Figure 4 The local schematic diagram of point B in the middle;

[0028] Figure 6 It is a schematic diagram of the overall structure of an embodiment of an outer side wall of a combustion chamber proposed by the utility model;

[0029] Figure 7 It is a side view of an embodiment of a combustion chamber proposed by the utility model;

[0030] Figure 8 yes Figure 7 Sectional view at CC;

[0031] In the figure,

[0032] 100, chamber body;

[0033] 200, a first cylindrical structure;

[0034] 210, lateral wall;

[0035] 211, first air inlet

[0036] 300, second cylindrical structure;

[0037] 310, medial wall;

[0038] 311, first air outlet;

[0039] 312, accommodation part;

[0040] 313, abutment;

[0041] 314, second air outlet;

[0042] 400, cooling chamber;

[0043] 510, positioning insert;

[0044] 520, positioning hole;

[0045] 600, elastic abutment component. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present invention.

[0048] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the description of the implementation method, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be understood 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 one or more of the features.

[0050] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0051] In some embodiments of the present application, a gas water heater is provided, which includes a combustion chamber.

[0052] In some embodiments of the present application, the above-mentioned combustion chamber is involved, such as Figures 1 to 8 As shown, the combustion chamber includes a chamber body 100, which is surrounded by a first cylindrical structure 200 formed by a plurality of outer side walls 210 connected around and formed, and a second cylindrical structure 300 formed by a plurality of inner side walls 310 connected therein and connected around and formed.

[0053] Specifically, Figure 1 , Figure 2 As shown, the first cylindrical structure is a rectangular structure, and the number of the plurality of outer walls 210 is four, wherein three outer walls 210 are bent, and another outer wall 210 is connected to the opening formed by the three outer walls 210, and is detachably connected thereto by bolts, thereby forming a rectangular structure.

[0054] The second tubular structure 300 abuts against the inner side wall of the first tubular structure 200 .

[0055] In order to achieve heat dissipation for the chamber body 100, a heat dissipation gap is formed between the first tubular structure 200 and the second tubular structure 300. Cold air enters the heat dissipation gap from the outside of the first tubular structure 200, and then enters the second tubular structure 300 through the heat dissipation gap. As the cold air flows, the chamber body 100 is cooled.

[0056] In order to ensure the cooling effect of cold air on the chamber body 100, cold air usually enters from the bottom of the chamber body 100, rises to the upper part of the chamber body 100 as the air temperature increases, and when it flows to the upper part of the chamber body 100, the air has been heated to a higher temperature. Therefore, the cooling effect on the upper part of the chamber body 100 is poor.

[0057] Therefore, in some embodiments of the present application, a plurality of cooling cavities 400 are formed at intervals along the vertical direction between the inner wall 310 and the outer wall 210. The plurality of cooling cavities 400 cool the chamber body 100 along the vertical direction, so that the temperature of the chamber body 100 along the height direction is relatively uniform, thereby ensuring the overall cooling effect of the chamber body 100.

[0058] A plurality of cooling cavities 400 are formed in the chamber body 100 at intervals along the height direction. The plurality of cooling cavities 400 are used for cooling at different heights in the chamber body 100, thereby avoiding failure of cooling at the upper part of the chamber body 100.

[0059] In some embodiments of the present application, a plurality of first airflow paths extending in the height direction are formed from the outside of the outer wall 210, through the plurality of cooling cavities 400 to the inside of the inner wall 310. The plurality of first airflow paths are arranged at intervals in the horizontal direction of the cooling cavity 400.

[0060] The first air flow passage is extended from bottom to top.

[0061] The cold air outside the outer wall 210 flows through the first air flow passage into the inner side of the inner wall 310 , and as the cold air flows from bottom to top, the temperature of the chamber body 100 around the cooling cavity 400 is lowered.

[0062] Since the plurality of cooling chambers 400 are arranged at intervals in the vertical direction, the plurality of cooling chambers 400 can cool down the chamber body 100 as a whole, thereby avoiding the problem of cooling failure in the upper part of the chamber body 100 .

[0063] In some embodiments of the present application, Figure 1 , Figure 2 , Figure 7 , Figure 8As shown, cold air enters from the outside of the outer wall 210 to the bottom of the cooling cavity 400 , flows in the cooling cavity 400 to the top of the cooling cavity 400 , and flows out from the top of the cooling cavity 400 to the inside of the inner wall 310 .

[0064] Specifically, the first air flow passage passes through the cooling cavity 400 in a vertical direction.

[0065] In some embodiments of the present application, a plurality of first air inlets 211 are dispersedly disposed on the outer side wall 210 .

[0066] In order to allow cold air to enter the cooling cavity 400 from the lower portion of the cooling cavity 400 , a plurality of first air inlets 211 are provided on the outer wall 210 at positions corresponding to the lower portion of the cooling cavity 400 .

[0067] Specifically, a plurality of first air inlets 211 are horizontally opened on the outer wall 210 at positions corresponding to the lower portion of the cooling cavity 400 .

[0068] Specifically, the plurality of first air inlets 211 are circular through holes.

[0069] Specifically, the first air inlet 211 may be formed on the outer side wall 210 by using a stamping process.

[0070] In some embodiments of the present application, since there are multiple cooling cavities 400 , correspondingly, multiple first air inlets 211 are respectively opened on the outer side wall 210 at positions corresponding to the multiple cooling cavities 400 .

[0071] Specifically, Figure 2 , Figure 6 , Figure 7 As shown, the plurality of first air inlets 211 can be divided into groups equal to the number of cooling cavities 400, and the number of first air inlets 211 in each group is multiple, and the plurality of first air inlets 211 in each group are formed on the outer side wall 210 at a position corresponding to the lower part of the cooling cavity 400. The plurality of groups of first air inlets 211 correspond to the positions of the plurality of cooling cavities 400, respectively.

[0072] In some embodiments of the present application, the plurality of first air inlets 211 in each group extend from one end to the other end of the cooling cavity 400 along the width direction of the cooling cavity 400 , so that the air in the cooling cavity 400 can be fully exchanged.

[0073] In some embodiments of the present application, a plurality of first air outlets 311 are dispersedly disposed on the inner wall 310 .

[0074] The plurality of first air outlets 311 are all in communication with the cooling chamber 400 .

[0075] Specifically, in order to allow the air in the cooling cavity 400 to flow sufficiently, a plurality of first air outlets 311 are provided on the inner wall 310 at positions corresponding to the upper end of the cooling cavity 400 .

[0076] In some embodiments of the present application, cold air enters the cooling cavity 400 from the outside of the outer wall 210 through the first air inlet 211, and the cold air enters the cooling cavity 400 from the lower end of the cooling cavity 400, and then moves from the lower end to the upper end in the cooling cavity 400 to the upper end of the cooling cavity 400, and flows into the inner side of the inner wall 310 through multiple first air outlets 311 connected to the upper end of the cooling cavity 400, and enters the chamber body 100.

[0077] The air entering the chamber body 100 gradually rises in the chamber body 100 and can continue to cool the inner wall 310 .

[0078] In some embodiments of the present application, in order to form a plurality of cooling cavities 400 between the inner wall 310 and the outer wall 210 , a plurality of accommodation portions 312 are formed at intervals on the inner wall 310 . The accommodation portions 312 are arranged to protrude toward the inner side of the inner wall 310 .

[0079] Thus, a cooling cavity 400 is formed between the accommodating portion 312 and the outer wall 210 .

[0080] In addition to a plurality of accommodating portions 312 , the inner side wall 310 also has a supporting portion 313 . The supporting portion 313 is used to connect with the outer side wall 210 .

[0081] The plurality of abutting portions 313 are disposed at intervals from the plurality of accommodation portions 312 .

[0082] The abutting portion 313 abuts against the outer wall 210 , and the accommodating portion 312 is protruded in a direction away from the outer wall 210 , so that a cooling cavity 400 is formed between the accommodating portion 312 and the outer wall 210 .

[0083] Specifically, the accommodating portion 312 is extended in the horizontal direction, so as to ensure that the cooling effect in the chamber body 100 in the horizontal direction is balanced.

[0084] The receiving portion 312 extends from one end of the inner wall 310 to the other end of the inner wall 310 .

[0085] Specifically, the cross section of the accommodation portion 312 along the vertical direction is a rectangular cross section.

[0086] Specifically, a plurality of first air outlets 311 are formed at an upper edge of the receiving portion 312. The plurality of first air outlets 311 are formed along the upper edge of the receiving portion 312 at intervals.

[0087] Specifically, the first air outlet 311 may be a rectangular air outlet.

[0088] Specifically, a plurality of first air outlets 311 are grouped and opened on the inner side wall 310. Each group of first air outlets 311 is opened on the inner side wall 310 along the horizontal direction. A plurality of groups of first air outlets 311 are respectively formed on the inner side wall 310 at positions corresponding to the upper end of the cooling cavity 400.

[0089] A plurality of cooling cavities 400 are formed between the plurality of outer walls 210 and the plurality of inner walls 310 .

[0090] In some embodiments of the present application, since a plurality of cooling cavities 400 are vertically spaced apart on the chamber body 100 , it is possible to ensure that the temperature inside the chamber body 100 does not increase due to an increase in height.

[0091] Since the cooling cavity 400 extends from one end of the outer wall 210 to the other end of the outer wall 210 along the horizontal direction, the temperature of the chamber body 100 along the horizontal direction is uniformly distributed.

[0092] In some embodiments of the present application, in order to ensure heat exchange at the connection of adjacent outer side walls 210 and avoid heat concentration at the connection of the two outer side walls 210 due to uneven heat dissipation, which may cause heat dissipation failure, a plurality of second airflow paths are formed from the outside of the outer side wall 210, the cooling cavity 400 to the inside of the inner side wall 310. The second airflow path enters from the outside of the outer side wall 210 to the connection of the inside of the inner side wall 310, thereby achieving cooling of the connection of the two adjacent outer side walls 210.

[0093] A plurality of second air flow passages are formed from bottom to top, and as the cold air gradually rises along the second air flow passages, the corners of the chamber body 100 are cooled.

[0094] Cold air enters the cooling cavity 400 from the bottom of the cooling cavity 400 from the outside of the outer wall 210 , flows to the side of the cooling cavity 400 , and flows out from the side of the cooling cavity 400 to the inside of the inner wall 310 .

[0095] In some embodiments of the present application, a plurality of second air outlets 314 are provided on the inner side wall 310. The second air outlets 314 are connected to the side of the cooling cavity 400. Thus, the air in the cooling cavity 400 flows out from the second air outlets 314 into the inner side wall 310, thereby performing heat exchange at the connection of the adjacent outer side walls 210.

[0096] The first air inlet 211, the cooling cavity 400 and the second air outlet 314 are connected to form a second air flow passage.

[0097] In some embodiments of the present application, the plurality of second air outlets 314 are respectively connected to two side portions of the cooling cavity 400 .

[0098] Since the cooling cavity 400 is extended in the horizontal direction, the two ends of the cooling cavity 400 extend to the two side ends of the outer wall 210 respectively, and the two second air outlets 314 provided on the side of the cooling cavity 400 can be used to exchange heat between the connection of the two adjacent outer walls 210, thereby avoiding the cooling failure near the connection of the two outer walls 210.

[0099] A plurality of cooling cavities 400 are formed between a first cylindrical structure 200 formed by a plurality of outer side walls 210 connected and surrounded and a second cylindrical structure 300 formed by a plurality of inner side walls 310 connected and surrounded and surrounded, and the plurality of cooling cavities 400 are respectively arranged between the plurality of outer side walls 210 and the plurality of inner side walls 310 for circumferential cooling of the chamber body 100;

[0100] By forming a plurality of cooling cavities 400 between the inner wall 310 and the outer wall 210 along the height direction thereof, the chamber body 100 is cooled along the height direction, thereby avoiding the formation of a cooling failure point;

[0101] By entering the cooling cavity 400 from the outside of the outer wall 210, flowing to the top of the cooling cavity 400 until entering the inside of the inner wall 310, sufficient heat exchange between the gas and the outer wall 210, the inner wall 310, and the cooling cavity 400 is achieved to provide a cooling effect.

[0102] In some embodiments of the present application, in order to facilitate the positioning of the outer wall 210 and the inner wall 310 during installation and the limiting of the position during use, the chamber body 100 further includes a positioning assembly, which includes a positioning insert 510 and a positioning hole 520 .

[0103] The positioning insert 510 is connected to the outer side wall 210 . The positioning hole 520 is formed on the inner side wall 310 .

[0104] When the inner wall 310 and the outer wall 210 are in an installed state, the positioning insert 510 is inserted into the positioning hole 520 , thereby achieving installation and positioning between the outer wall 210 and the inner wall 310 .

[0105] When the outer wall 210 and the inner wall 310 are in the installed state, a gap is often formed between the outer wall 210 and the inner wall 310 . Therefore, in some embodiments of the present application, in order to achieve a stable connection between the outer wall 210 and the inner wall 310 , the chamber body 100 also includes a plurality of elastic abutment components 600 .

[0106] A plurality of elastic abutting parts 600 are formed on the inner side wall 310, and the elastic abutting parts 600 abut against the outer side wall 210 under the action of elastic force, so that the inner side wall 310 and the outer side wall 210 are tightly fitted to avoid shaking.

[0107] Specifically, a plurality of elastic abutting components 600 are disposed at intervals on the edge of the inner side wall 310 .

[0108] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A combustion chamber, characterized in that: The chamber body comprises a first cylindrical structure formed by a plurality of outer side walls connected in a surrounding manner and a second cylindrical structure formed by a plurality of inner side walls connected in a surrounding manner; The plurality of inner side walls are respectively connected to the inner sides of the plurality of outer side walls; Multiple rows of cooling cavities are formed between the adjacent outer side walls and the adjacent inner side walls along the vertical direction; A plurality of first airflow passages extending in the height direction are formed from the outside of the outer wall, through the plurality of cooling cavities, to the inside of the inner wall; cold air flows from the outside of the outer wall through the first airflow passages to the inside of the inner wall and out.

2. The combustion chamber according to claim 1, characterized in that A second air flow passage along an inclined direction is formed from the outside of the outer wall, through a plurality of the cooling cavities, to the inside of the inner wall; cold air flows from the outside of the outer wall through the second air flow passage to the inside of the connection between two adjacent inner walls and out.

3. The combustion chamber according to claim 2, characterized in that A plurality of first air inlets are dispersedly provided on the outer side wall, and the plurality of first air inlets are respectively connected to the lower parts of the plurality of cooling chambers; A plurality of first air outlets are provided on the inner side wall, and the plurality of first air outlets are respectively connected to the upper portions of the plurality of cooling chambers; The first air inlet, the cooling cavity and the first air outlet are connected to form the first air flow passage.

4. The combustion chamber according to claim 3, characterized in that A plurality of second air outlets are provided on the inner side wall, and the plurality of second air outlets are connected to the side of the cooling cavity; The first air inlet, the cooling cavity and the second air outlet are connected to form the second air flow passage.

5. The combustion chamber according to claim 4, characterized in that The plurality of second air outlets are respectively communicated with two side portions of the cooling cavity.

6. The combustion chamber according to claim 1, characterized in that The chamber body also includes a positioning component, which includes a positioning plug and a positioning hole. The positioning plug is connected to the outer wall, and the positioning hole is opened on the inner wall. When the inner wall and the outer wall are in an installed state, the positioning plug is inserted into the positioning hole.

7. The combustion chamber according to claim 1, characterized in that The chamber body further comprises a plurality of elastic abutting components, the plurality of elastic abutting components are arranged at intervals at the edge of the inner side wall, and the plurality of elastic abutting components abut against the outer side wall.

8. The combustion chamber according to claim 3, characterized in that A plurality of accommodating portions are formed at intervals on the inner wall along the vertical direction, the accommodating portions protrude toward the inner side of the inner wall, the accommodating portions and the outer wall surround the cooling cavity, the accommodating portions extend along the horizontal direction, and a plurality of the first air outlets are opened at intervals along the upper edge of the accommodating portions.

9. The combustion chamber according to claim 8, characterized in that The accommodating portion extends from one side end of the inner wall to the other side end of the inner wall along a horizontal direction.

10. A gas water heater, characterized in that: Comprising a combustion chamber as claimed in any one of claims 1 to 9.

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