Combustion chamber of air cooling structure

Abstract

The combustion chamber of the air cooling structure comprises a combustor and a combustion chamber frame, the upper portion and the lower portion of the combustion chamber frame are open, the periphery of the combustion chamber frame is provided with side walls, the combustor is arranged at the bottom of the combustion chamber frame, and the opposite side walls of the combustion chamber frame are each composed of three layers of structural plates. The other opposite side wall of the combustion chamber frame is composed of two layers of structural plates, a gap between every two adjacent structural plates forms an air channel, each layer of structural plate is provided with a ventilation opening, and the ventilation openings in every two adjacent structural plates are arranged in a staggered mode. A coil pipe of the heat exchanger is omitted, a combustion chamber on the lower portion of the heat exchanger is changed into the combustion chamber of an air cooling structure, the phenomena of coil pipe corrosion and combustion chamber wall corrosion can be effectively avoided, the risks of water leakage, flue gas deterioration, flame overflow and the like are reduced, and the problem that the surface temperature of the combustion chamber is too high due to the fact that the coil pipe is omitted can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of gas water heaters, and in particular to a combustion chamber with an air-cooling structure. Background Art

[0002] In the prior art, gas water heaters usually use an integrally-entered oxygen-free copper heat exchanger with coils. The lower part of the heat absorbing plate of the oxygen-free copper heat exchanger with coils is a combustion chamber. The outer side of the combustion chamber surrounds the coils. The coils and the combustion chamber are fixed by welding. Condensed water easily accumulates at the welding point between the coils and the combustion chamber. The accumulation of condensed water will cause the welding point to be gradually corroded during use, and even cause water leakage. On the other hand, the combustion chamber at the bottom of the heat exchanger is made of oxygen-free copper, which has poor corrosion resistance. During the operation of the water heater, a certain amount of condensed water will be generated. The condensed water adheres to the inner wall of the combustion chamber, causing corrosion. Long-term accumulation may cause the combustion chamber wall to corrode. In the case of severe corrosion, it may also cause the flame to overflow and cause a fire risk, and also cause the combustion condition of the gas water heater to deteriorate. Summary of the invention

[0003] The purpose of the present invention is to propose a combustion chamber with an air-cooled structure in order to solve the above-mentioned problem.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A combustion chamber with an air-cooled structure, comprising:

[0006] A burner and a combustion chamber frame, wherein the combustion chamber frame is opened at the top and bottom and has side walls all around, the burner is arranged at the bottom of the combustion chamber frame, one side wall of the combustion chamber frame relative to the side wall is composed of three layers of structural plates, and the other side wall of the combustion chamber frame relative to the side wall is composed of two layers of structural plates, the gaps between adjacent structural plates form air ducts, each layer of the structural plate is provided with vents, and the vents on adjacent structural plates are staggered.

[0007] As a preferred technical solution, the side wall composed of three layers of the structural plates includes a first outer frame, a first inner frame and a front cover plate connected in sequence from the inside to the outside, the gaps between the first outer frame and the first inner frame, and between the first inner frame and the front cover plate respectively form an air duct, the upper and lower parts of the front cover plate are respectively provided with a vent, the middle part of the first inner frame is provided with a vent, and the upper and lower parts of the first outer frame are respectively provided with a vent;

[0008] The side wall composed of two layers of the structural plates includes a second inner frame and a second outer frame arranged from the inside to the outside, the gap between the second outer frame and the second inner frame forms an air duct, the upper and lower parts of the second outer frame are respectively provided with a vent, and the middle part of the second inner frame is provided with the vent.

[0009] As a preferred technical solution, the first outer frame, the first inner frame and the second inner frame are made of mirror stainless steel material.

[0010] As a preferred technical solution, the front cover plate and the second outer frame are made of aluminum-plated plate material.

[0011] As a preferred technical solution, the structural plates located at the same side wall are connected by stainless steel rivets.

[0012] As a preferred technical solution, the vent is composed of a plurality of strip holes arranged linearly.

[0013] In summary, due to the adoption of the above-mentioned technical scheme, the beneficial effects of the present invention are as follows: the present invention provides a combustion chamber with an air-cooled structure, in which the coil of the heat exchanger is eliminated, and the combustion chamber at the bottom of the heat exchanger is changed to an air-cooled structure combustion chamber made of stainless steel or aluminum-plated plate. This can effectively avoid the occurrence of coil corrosion and combustion chamber wall corrosion, reduce the risks of water leakage, flue gas deterioration, flame spillage, etc., and can also avoid the problem of excessively high surface temperature of the combustion chamber caused by the elimination of the coil. Compared with copper, stainless steel or aluminum-plated plate materials are more advantageous in price. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A perspective view of a combustion chamber provided according to an embodiment of the present invention is shown.

[0015] Figure 2 An exploded view of a combustion chamber provided according to an embodiment of the present invention is shown.

[0016] Figure 3 A front view of a combustion chamber provided according to an embodiment of the present invention is shown.

[0017] Figure 4 Shows Figure 3 A partial enlarged view of the AA point in the middle.

[0018] Legend:

[0019] 1. Combustion chamber frame; 11. Side wall; 111. First outer frame; 112. First inner frame; 113. Front cover plate; 114. Second outer frame; 115. Second inner frame; 2. Burner; 3. Air duct; 4. Ventilation port; 41. Strip hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1

[0022] like Figure 1-4 The embodiment shown discloses a combustion chamber of an air-cooled structure, comprising:

[0023] A burner 2 and a combustion chamber frame 1, wherein the combustion chamber frame 1 is opened at the top and the bottom and has side walls 11 all around, wherein the burner 2 is arranged at the bottom of the combustion chamber frame 1, wherein one side wall 11 of the combustion chamber frame 1 is composed of three layers of structural plates, and the other side wall 11 of the combustion chamber frame 1 is composed of two layers of structural plates, and the gaps between adjacent structural plates form air ducts 3, and each layer of the structural plates is provided with vents 4, and the vents 4 on adjacent structural plates are staggered, and the staggered vents 4 can increase the flow time of cold air and improve the heat dissipation effect.

[0024] The four side walls 11 of the combustion chamber frame 1 of the present invention are all provided with vents 4 for air intake. One group of the relative side walls 11 of the combustion chamber frame 1 has two air ducts 3 each, forming a double-layer air flow layer. The double-layer air flow layer is conducive to slowing down the air flow speed, thereby increasing the heat exchange time between the cold air and the heat of the combustion chamber surface, making the surface cooling effect better. The other group of relative side walls 11 has one air duct 3 each, forming a single-layer air flow layer. According to the provisions of GB6932-2015 on the surface temperature rise of the water heater shell, considering that the distance between the left and right sides of the combustion chamber frame and the water heater shell is greater than the distance between the front and rear sides, the relative side walls 11 with two air ducts 3 are set as the front and rear sides of the combustion chamber, and the relative side walls 11 with one air duct 3 are set as the left and right sides of the combustion chamber. Although the surface temperature of the left and right sides after single-layer heat dissipation is higher than that of the front and rear sides, it is still within an acceptable range and meets the provisions of GB6932-2015. The use of single-layer heat dissipation on the left and right sides can simplify the structure of the combustion chamber. The present invention eliminates the coil below the heat exchanger and changes it to an air-cooling structure, thereby effectively avoiding the occurrence of coil corrosion and combustion chamber wall corrosion.

[0025] Embodiment 2

[0026] like Figure 2As shown, this embodiment is developed on the basis of the first embodiment. Specifically, this embodiment defines the specific structure of the combustion chamber frame 1. The side wall 11 composed of three layers of the structural plates includes a first outer frame 111, a first inner frame 112 and a front cover plate 113 connected in sequence from the inside to the outside. The gaps between the first outer frame 111 and the first inner frame 112 and between the first inner frame 112 and the front cover plate 113 respectively form an air duct 3. The upper and lower parts of the front cover plate 113 are respectively provided with a vent 4. A vent 4 is provided in the middle of the first inner frame 112, and a vent 4 is provided in the upper and lower parts of the first outer frame 111 respectively. Cold air enters the air duct 3 between the front cover plate 113 and the first inner frame 112 from the vents 4 at the upper and lower parts of the front cover plate 113, and the cold air at both ends flows toward the middle, and then enters the air duct 3 between the first inner frame 112 and the first outer frame 111 from the vent 4 in the middle part of the first inner frame 112, and finally enters the combustion chamber from the vents 4 at the upper and lower parts of the first outer frame 111.

[0027] The side wall 11 composed of two layers of the structural plates includes a second inner frame 115 and a second outer frame 114 arranged from the inside to the outside, and the gap between the second outer frame 114 and the second inner frame 115 forms an air duct 3. The upper and lower parts of the second outer frame 114 are respectively provided with a vent 4, and the middle part of the second inner frame 115 is provided with the vent 4. Cold air enters the gap between the second outer frame 114 and the second inner frame 115 from the vents 4 at the upper and lower parts of the second outer frame 114.

[0028] Embodiment 3

[0029] like Figure 2 As shown, this embodiment is developed on the basis of the second embodiment. Specifically, the problem that this embodiment wants to solve is how to reduce the temperature rise on the surface of the combustion chamber. The first outer frame 111, the first inner frame 112 and the second inner frame 115 are made of mirror stainless steel material. Stainless steel has good corrosion resistance and can effectively reduce the corrosion of the combustion chamber. The use of a mirror surface can form a mirror heat reflection effect in the combustion chamber, which can gather the heat in the combustion chamber and improve the thermal efficiency, thereby reducing the temperature rise on the surface of the combustion chamber.

[0030] Embodiment 4

[0031] like Figure 2 As shown, this embodiment is developed on the basis of the second embodiment, and the problem to be solved in this embodiment is how to improve the service life of the combustion chamber. Specifically, the front cover plate 113 and the second outer frame 114 are made of aluminum-plated plate material. The aluminum-plated plate has good heat resistance and has a longer service life in a high-temperature use environment.

[0032] Embodiment 5

[0033] like Figure 1-2 As shown, this embodiment is developed on the basis of the first embodiment, and the problem to be solved in this embodiment is the installation problem of the combustion chamber frame 1. Specifically, the structural plates located at the same side wall 11 are connected by stainless steel rivets. A plurality of positioning through holes are provided on each structural plate, and the structural plates located at the same side wall 11 are connected together by stainless steel rivets passing through the positioning through holes on each structural plate.

[0034] Embodiment 6

[0035] like Figure 2-3 As shown, this embodiment is developed on the basis of the first embodiment, and the problem to be solved in this embodiment is to improve the ventilation effect of cold air. Specifically, the vent 4 is composed of a plurality of strip holes 41 arranged linearly. The use of the strip holes 41 can increase the intake size of cold air, and the linear arrangement of the strip holes 41 can increase the amount of cold air passing through.

[0036] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combustion chamber with an air-cooled structure, characterized in that: include: A burner (2) and a combustion chamber frame (1), wherein the combustion chamber frame (1) is open at the top and bottom and has side walls (11) on all sides, and the burner (2) is arranged at the bottom of the combustion chamber frame (1), and one side wall (11) of the combustion chamber frame (1) relative to the side wall (11) is composed of three layers of structural plates, and the other side wall (11) of the combustion chamber frame (1) relative to the side wall (11) is composed of two layers of structural plates, and the gaps between adjacent structural plates form air ducts (3), and each layer of the structural plates is provided with ventilation holes (4), and the ventilation holes (4) on adjacent structural plates are staggered.

2. The air-cooled combustion chamber according to claim 1, characterized in that: The side wall (11) composed of three layers of the structural plates comprises a first outer frame (111), a first inner frame (112) and a front cover plate (113) which are sequentially connected from the inside to the outside, the gaps between the first outer frame (111) and the first inner frame (112) and between the first inner frame (112) and the front cover plate (113) respectively form an air duct (3), the upper and lower parts of the front cover plate (113) are respectively provided with a vent (4), the middle part of the first inner frame (112) is provided with a vent (4), and the upper and lower parts of the first outer frame (111) are respectively provided with a vent (4); The side wall (11) composed of two layers of the structural plates comprises a second inner frame (115) and a second outer frame (114) arranged from the inside to the outside, the gap between the second outer frame (114) and the second inner frame (115) forms an air duct (3), the upper and lower parts of the second outer frame (114) are respectively provided with a ventilation opening (4), and the middle part of the second inner frame (115) is provided with the ventilation opening (4).

3. The air-cooled combustion chamber according to claim 2, characterized in that: The first outer frame (111), the first inner frame (112) and the second inner frame (115) are made of mirror-finished stainless steel material.

4. The air-cooled combustion chamber according to claim 2, characterized in that: The front cover plate (113) and the second outer frame (114) are made of aluminum-plated plate material.

5. The air-cooled combustion chamber according to claim 1, characterized in that: The structural plates located at the same side wall (11) are connected by stainless steel rivets.

6. The air-cooled combustion chamber according to claim 1, characterized in that: The ventilation opening (4) is composed of a plurality of strip-shaped holes (41) arranged in a linear manner.

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