Air-cooled burner device and gas water heater

Abstract

The utility model provides an air-cooled burner device and a gas water heater. The burner device comprises a combustion chamber assembly and a burner assembly. The combustion chamber assembly comprises a cylindrical shell, a plurality of first protruding parts protruding outwards are arranged on the side wall of the shell, baffles are arranged on the sides, facing the interior of the shell, of the first protruding parts, and cooling cavities are formed between the baffles and the first protruding parts. An air inlet is formed in the surface of the first protruding part, and an air outlet is formed in the baffle. The top of the combustor assembly is embedded in the inner side of the bottom of the shell. The air-cooled burner device and the gas water heater are simple in structure and convenient to install, the cost can be well reduced, and the temperature rise of the surface of the combustion chamber can be obviously reduced.

Description

Technical Field

[0001] The utility model relates to a burner, in particular to an air-cooled burner device and a gas water heater. Background Art

[0002] Traditional gas water heaters use a combustion heat exchange system, which is mostly composed of two independent components: a water-cooled coil heat exchanger and a burner assembly. It is easy to have assembly gaps that affect the combustion heat exchange performance, and the structure and process are relatively low-end. In order to reduce the temperature rise on the combustion chamber surface, the common air-cooled burners on the market currently use double-layer or multi-layer baffle structures. The burner assembly has a large number of parts and the assembly and process are relatively complicated. It needs to be installed in a certain direction or sequence. At the same time, due to the matching problems at the joints, the air-cooling effect of the combustion chamber is often poor. The above shortcomings seriously affect the use of the product.

[0003] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0004] The utility model aims to provide an air-cooled burner device, which has a simple structure, is easy to install, can well reduce costs, and can significantly reduce the temperature rise of the combustion chamber surface.

[0005] Another object of the present utility model is to provide a gas water heater, which includes the above-mentioned air-cooled burner device.

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

[0007] An air-cooled burner device comprises a combustion chamber assembly and a burner assembly;

[0008] The combustion chamber assembly comprises a cylindrical shell, a side wall of the shell is provided with a first protruding portion protruding outward, a baffle is provided on the side of the first protruding portion facing the inside of the shell, and a cooling cavity is formed between the baffle and the first protruding portion; an air inlet is provided on the surface of the first protruding portion, and an air outlet is provided on the baffle;

[0009] The top of the burner assembly is embedded in the inner side of the bottom of the shell.

[0010] According to an embodiment of the present utility model, the air inlet is arranged at the middle of the first raised portion, and the air outlet is arranged at the top and the bottom of the baffle.

[0011] According to one embodiment of the present invention, the baffle is made of heat insulating material.

[0012] According to an embodiment of the present utility model, the housing includes a first shell having a U-shaped cross section and a second shell having a plate shape, and the second shell is detachably connected to the first shell.

[0013] According to one embodiment of the utility model, a second protrusion protruding toward the outer shell is provided in the middle of the baffle, and a flange extending toward the outer shell is provided on the outer periphery of the baffle; the second protrusion corresponds to the shape of the first protrusion, and there is a gap between the edge of the second protrusion and the edge corresponding to the first protrusion.

[0014] According to an embodiment of the utility model, the burner assembly includes a plurality of burner monoliths and a fixing bracket; the burner monolith is arranged in the fixing bracket, and the outer side of the fixing bracket is fixedly connected to the inner side of the bottom of the outer shell.

[0015] According to an embodiment of the present utility model, the fixing bracket includes a middle fixing bracket and a rear fixing bracket, and the two are detachably connected.

[0016] According to one embodiment of the utility model, a secondary air plate is provided at the bottom of the fixing bracket, and the secondary air plate is provided with a first air inlet hole and a second air inlet hole.

[0017] According to one embodiment of the utility model, the air outlet below the baffle is located below the top surface of the burner monolithic piece.

[0018] The utility model also provides a gas water heater, comprising the above-mentioned air-cooled burner device.

[0019] Compared with the prior art, the advantages and beneficial effects of the embodiments of the present invention are:

[0020] 1) The air-cooled burner device and gas water heater provided by the embodiment of the utility model have a burner assembly top embedded in the bottom inner side of the shell of the combustion chamber assembly, which has a simple structure and a simple installation process, and can effectively reduce costs.

[0021] 2) The air-cooled burner device and gas water heater provided by the embodiment of the utility model have good sealing and stable performance after the combustion chamber assembly and the burner assembly are combined, which can better ensure the reliability of product quality and the safety of the gas water heater.

[0022] 3) The air-cooled burner device and gas water heater provided by the embodiment of the utility model have a baffle of the combustion chamber assembly which itself has a good heat-insulating effect, and the cooling cavity formed between the baffle and the first protrusion further has a heat-insulating effect, while the air flow inside the cooling cavity takes away the high-temperature heat of the side wall of the combustion chamber assembly, further having a cooling effect, and the triple heat-insulating and cooling structure ensures that the outer shell of the combustion chamber assembly maintains a lower temperature.

[0023] 4) The air-cooled burner device and gas water heater provided by the embodiment of the utility model have an air inlet arranged in the middle of the first raised portion, which can minimize the air flow path and facilitate the rapid flow of external air to the upper and lower sides of the baffle, thereby achieving a better cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0025] Figure 1 A schematic diagram of the structure of a burner device with air cooling provided in an embodiment of the utility model;

[0026] Figure 2 An exploded schematic diagram of an air-cooled burner device provided in an embodiment of the utility model;

[0027] Figure 3 A cross-sectional schematic diagram of an air-cooled burner device provided in an embodiment of the utility model;

[0028] Figure 4 A schematic diagram of the structure of the shell of the air-cooled burner device provided in an embodiment of the utility model;

[0029] Figure 5 A schematic diagram of the structure of a baffle of a burner device for air cooling provided in an embodiment of the utility model;

[0030] Figure 6 A schematic structural diagram of a burner assembly of an air-cooled burner device provided in an embodiment of the utility model.

[0031] Description of reference numerals:

[0032] 1. Combustion chamber assembly; 11. Shell; 111. First shell 111; 112. Second shell; 113. Recess; 114. Notch; 12. First protrusion; 13. Air inlet; 2. Burner assembly; 21. Burner monolith; 22. Fixing bracket; 221. Middle fixing bracket; 222. Rear fixing bracket; 23. Secondary air plate; 231. First air inlet; 232. Second air inlet; 3. Baffle; 31. Air outlet; 32. Second protrusion; 33. Flanging; 4. Cooling chamber. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0034] In the description of the present invention, "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. The directions or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense, for example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] like Figure 1 As shown, an embodiment of the utility model provides an air-cooled burner device, comprising a combustion chamber assembly 1 and a burner assembly 2.

[0036] like Figure 2 , Figure 3As shown, the combustion chamber assembly 1 includes a cylindrical shell 11, such as a square cylinder, and the side wall of the shell 11 is provided with a first protruding portion 12 protruding outward, and the first protruding portion 12 is provided with a baffle 3 on the side facing the inside of the shell 11, preferably, the baffle 3 is a heat insulating material. A cooling cavity 4 is formed between the baffle 3 and the first protruding portion 12. An air inlet 13 is provided on the surface of the first protruding portion 12, and the baffle 3 is provided with an air outlet 31. The top of the burner assembly 2 is embedded in the inner side of the bottom of the shell 11, for example, connected by screws, rivets and other connecting parts.

[0037] like Figure 3 As shown, the combustion of gas in the burner assembly 2 generates negative pressure inside the combustion chamber assembly 1, and air enters the cooling cavity 4 from the air inlet 13 and flows to the air outlet 31 of the baffle 3. The air flow direction is shown in the direction of the arrow in the figure. The air flow inside the cooling cavity 4 takes away the high-temperature heat of the outer shell 11, thereby achieving the effect of cooling the surface of the combustion chamber assembly 1.

[0038] The air-cooled burner device provided in this embodiment has a burner assembly 2 whose top is embedded in the bottom inner side of the shell 11 of the combustion chamber assembly 1. It has a simple structure and a simple installation process, which can effectively reduce costs. After the combustion chamber assembly 1 and the burner assembly 2 of the air-cooled burner device provided in this embodiment are combined, they have good sealing and stable performance, which can better ensure the reliability of product quality and the safety of the use of the gas water heater. The baffle 3 of the combustion chamber assembly 1 itself has a good heat insulation effect, and the cooling cavity 4 formed between the baffle 3 and the first protrusion 12 further plays a heat insulation role, and the air flow inside the cooling cavity 4 takes away the high-temperature heat of the side wall of the combustion chamber assembly 1, which further plays a cooling role. The triple heat insulation and cooling structure ensures that the shell 11 of the combustion chamber assembly 1 maintains a lower temperature.

[0039] In a preferred embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 As shown, the air inlet 13 is arranged in the middle of the first protrusion 12 (vertical direction), and the air outlet 31 is arranged at the top and bottom of the baffle 3. The air inlet 13 can be a circular hole, a strip hole or a polygonal structure, and is arranged in a matrix in parallel in the middle of the first protrusion 12. The air inlet 13 is arranged in the middle of the first protrusion 12, which can make the air flow path reach the minimum distance, facilitate the external air to flow quickly to the upper and lower sides of the baffle 3, and achieve a better cooling effect. The housing 11 is provided with a first protrusion 12 protruding outward, which is conducive to cooling and does not affect the upward flow of high-temperature flue gas inside the combustion chamber assembly 1, while enhancing the strength of the plate material.

[0040] After testing, the width of the cooling chamber 4 (the distance between the first protrusion 12 and the baffle 3) is 3-5mm, which can achieve a good cooling effect. If the chamber width is too small, it is easy to cause poor air circulation, and if the width is too large, it will increase the manufacturing difficulty. In a preferred embodiment of the utility model, the width of the cooling chamber 4 is 4mm, which can achieve the best cooling effect while taking into account the manufacturing difficulty.

[0041] Specifically, if Figure 4 As shown, the housing 11 includes a first housing 111 with a U-shaped cross section and a second housing 112 in the form of a plate. The second housing 112 is detachably connected to the first housing 111 to facilitate assembly of the combustion chamber assembly 1. Furthermore, the second housing 112 is provided with an inwardly recessed recess 113 for mounting an ignition needle assembly for the water heater. In this embodiment, the housing 11 and the baffle 3 are made of sheet metal or other plate-like materials, and the various parts are assembled together by screws or rivets.

[0042] In one embodiment of the present invention, Figure 5 As shown, the baffle 3 is provided with a second protrusion 32 protruding toward the outer shell 11 in the middle part, and the baffle 3 is provided with a flange 33 extending toward the outer shell 11 on the outer periphery, and the flange 33 is fitted with the inner side of the outer shell 11. The second protrusion 32 corresponds to the shape of the first protrusion 12, and the cooling cavity 4 is formed between the two. There is a gap between the edge of the second protrusion 32 and the edge corresponding to the first protrusion 12, which serves as a channel for air to flow into the combustion chamber assembly 1. The baffle 3 is provided with a second protrusion 32 protruding toward the outer shell 11, which is beneficial to cooling the outer shell of the combustion chamber assembly 1 without affecting the upward flow of the internal high-temperature flue gas, and at the same time increases the strength of the plate-like material. The air outlets 31 on the upper and lower sides of the baffle 3 can be circular holes, strip holes or polygonal structures.

[0043] In one embodiment of the present invention, Figure 1 , Figure 2 , Figure 4 As shown, the tops of two opposite sides of the housing 11 have notches 114, that is, the heights of the two sides are lower than the heights of the other two sides, and the formed step structure is used to install the heat exchanger for the water heater.

[0044] like Figure 1 ,, Figure 2 , Figure 6As shown, the burner assembly 2 includes a plurality of burner monoliths 21 and a fixing bracket 22. The burner monolith 21 is arranged in the fixing bracket 22, and the outer side of the fixing bracket 22 is fixedly connected to the inner side of the bottom of the shell 11. Specifically, the fixing bracket 22 includes a middle fixing bracket 221 and a rear fixing bracket 222, which are detachably connected for easy installation. For example, the middle fixing bracket 21 is U-shaped, and the rear fixing bracket 222 is plate-shaped. A secondary air plate 23 is provided at the bottom of the fixing bracket 22, and the secondary air plate 23 is provided with a first air inlet 231, for example, it is arranged at the edge of the secondary air plate 23, and can be a circular or polygonal hole, which is conducive to the flow of air from the bottom to the combustion chamber assembly 1, and at the same time provides sufficient secondary air to the front and rear sides of the burner assembly 2 to better stabilize the burner flame and reduce the inner wall temperature of the combustion chamber assembly 1. The secondary air plate 23 is also provided with a second air inlet 232, for example, provided in the middle of the secondary air plate 23, which may be a square hole or a round hole, for supplementing the secondary air required on the right side of the burner monolith 21, so as to stabilize the flame combustion and reduce the height of the combustion flame. The secondary air enters from the first air inlet 231 and the second air inlet 232 inside the secondary air plate 23, passes through the gap between the burner monolith 21 and the burner monolith 21 and enters the side of the monolithic fire hole, supplementing the air required for gas combustion, so as to facilitate more complete combustion, and at the same time reduce the temperature at the position of the monolithic fire hole.

[0045] In a preferred embodiment of the present invention, Figure 3 As shown, the air flow direction is shown in the direction of the arrow in the figure, and the air outlet 31 below the baffle 3 is located below the top surface of the burner single piece 21 to reduce the interference of external air on the burner assembly 2 and improve the combustion performance of the burner.

[0046] The utility model also provides a gas water heater, comprising the above-mentioned air-cooled burner device.

[0047] After the air-cooled burner device and gas water heater provided by the embodiment of the utility model are in operation, the gas combustion generates high temperature, the baffle 3 in the combustion chamber assembly 1 itself plays a good heat-insulating role, and the formed cooling cavity 4 further plays a heat-insulating role, and the air flow inside the cooling cavity 4 takes away the high-temperature heat of the inner wall of the combustion chamber assembly 1, ensuring a lower temperature outside the combustion chamber assembly, which can better ensure the reliability of product quality and the safety of the gas water heater.

[0048] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A burner device with air cooling, characterized in that: It comprises a combustion chamber assembly (1) and a burner assembly (2); The combustion chamber assembly (1) comprises a cylindrical outer shell (11); a first protruding portion (12) protruding outward is provided on a side wall of the outer shell (11); a baffle (3) is provided on a side of the first protruding portion (12) facing the inside of the outer shell (11); a cooling cavity (4) is formed between the baffle (3) and the first protruding portion (12); an air inlet (13) is provided on a surface of the first protruding portion (12); and an air outlet (31) is provided on the baffle (3); The top of the burner assembly (2) is embedded inside the bottom of the outer shell (11).

2. The air-cooled burner device according to claim 1, characterized in that: The air inlet (13) is arranged at the middle of the first raised portion (12), and the air outlet (31) is arranged at the top and bottom of the baffle (3).

3. The air-cooled burner device according to claim 1, characterized in that: The baffle (3) is made of heat insulating material.

4. The air-cooled burner device according to claim 1, characterized in that: The housing (11) comprises a first shell (111) with a U-shaped cross section and a second shell (112) in a plate shape, wherein the second shell (112) is detachably connected to the first shell (111).

5. The air-cooled burner device according to claim 1, characterized in that: A second protrusion (32) protruding in the direction of the outer shell (11) is provided in the middle of the baffle (3), and a flange (33) extending in the direction of the outer shell (11) is provided on the outer periphery of the baffle (3); the second protrusion (32) corresponds to the shape of the first protrusion (12), and a gap is provided between the edge of the second protrusion (32) and the corresponding edge of the first protrusion (12).

6. The air-cooled burner device according to any one of claims 1 to 5, characterized in that: The burner assembly (2) comprises a plurality of burner monoliths (21) and a fixing bracket (22); the burner monolith (21) is arranged in the fixing bracket (22), and the outer side of the fixing bracket (22) is fixedly connected to the inner side of the bottom of the outer shell (11).

7. The air-cooled burner device according to claim 6, characterized in that: The fixing bracket (22) comprises a middle fixing bracket (221) and a rear fixing bracket (222), which are detachably connected.

8. The air-cooled burner device according to claim 6, characterized in that: A secondary air plate (23) is provided at the bottom of the fixing bracket (22), and the secondary air plate (23) is provided with a first air inlet hole (231) and a second air inlet hole (232).

9. The air-cooled burner device according to claim 6, characterized in that: The air outlet (31) below the baffle (3) is located below the top surface of the burner monolith (21).

10. A gas water heater, characterized in that: It comprises an air-cooled burner device according to any one of claims 1 to 9.

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