Combustor and gas water heater
By setting non-uniformly spaced air inlets and flow guiding structures on the burner casing, the airflow path of the air-cooled system is optimized, solving the problem of uneven heat dissipation of the burner casing and achieving efficient heat dissipation and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU ROBAM APPLIANCES CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-12
AI Technical Summary
Uneven heat dissipation from the burner casing leads to large temperature differences, accelerates casing aging, and makes it prone to localized deformation, resulting in high-temperature flue gas leakage and affecting equipment safety.
Non-equally spaced air inlets are set on the burner casing, combined with heat insulation plates and guide strips to form convection chambers and staggered air outlets, optimizing the air-cooled airflow path and concentrating the air-cooled air to the high-temperature area for efficient heat dissipation.
This ensures that the temperature difference of the outer casing is within a safe range, extends service life, reduces the risk of high-temperature flue gas leakage, and improves equipment safety and stability.
Smart Images
Figure CN224230002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas equipment technology, and in particular to burners and gas water heaters. Background Technology
[0002] As the core equipment for household hot water supply, the safety, energy efficiency ratio, and service life of gas water heaters are crucial aspects for users.
[0003] In the prior art, gas water heaters are equipped with burners that can continuously burn and heat cold water to the required temperature through heat exchange to meet the user's needs. At the same time, in order to ensure that the temperature of the burner shell does not continue to rise, an air-cooling module or a water-cooling module is also installed on the burner to cool down the burner shell and protect other components.
[0004] However, the heat distribution inside the burner is not uniform. In actual operation, the temperature distribution of the burner shell is uneven, with some areas closer to heat radiation and therefore at higher temperatures. When the above-mentioned modules are cooled, it is difficult to take into account the high or low temperature parts of the shell at the same time, resulting in poor heat dissipation in high-temperature areas and excessive heat dissipation in low-temperature areas, which affects the temperature inside the burner. This causes large temperature differences in various areas of the shell surface, which not only accelerates the aging of the shell but also easily causes local deformation, high-temperature flue gas leakage, and affects the safety of other components. Utility Model Content
[0005] The purpose of this invention is to provide a burner and a gas water heater that solves the problem in the prior art where the heat dissipation of the burner shell is uneven, resulting in large temperature differences in different areas of the shell, which accelerates the aging of the shell and makes it prone to local deformation, and high-temperature flue gas leakage that affects the safety of other components.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] In a first aspect, this utility model provides a burner, which includes:
[0008] The outer casing has a side wall with a first air inlet and a second air inlet spaced apart. The first air inlet includes a plurality of first air holes, and the second air inlet includes a plurality of second air holes. The plurality of first air holes or the plurality of second air holes are distributed at non-equal intervals along a first direction.
[0009] Optionally, along the first direction, the spacing between two adjacent first air inlets increases in a direction away from the edge of the outer casing sidewall.
[0010] Optionally, a plurality of second air inlets are distributed at equal intervals along the first direction.
[0011] Optionally, the first air inlet is located on the side of the housing closer to the heat exchanger, and the second air inlet is located on the side of the housing away from the heat exchanger.
[0012] Optionally, the burner further includes:
[0013] A heat insulation plate is disposed inside the outer shell and forms a convection cavity between it and the side wall of the outer shell. The first air inlet and the second air inlet are both connected to the convection cavity. The heat insulation plate has an air outlet connected to the convection cavity.
[0014] Optionally, a plurality of guide strips are provided at intervals on the inner sidewall of the housing, and the guide strips extend along the direction of airflow.
[0015] Optionally, the plurality of guide strips are distributed at equal intervals along a first direction; or
[0016] In the first direction, the spacing between two adjacent guide strips decreases in the direction away from the edge of the outer casing sidewall.
[0017] Optionally, the air outlet is staggered from the first air inlet and the second air inlet.
[0018] Optionally, the burner further includes:
[0019] A convection plate is disposed inside the convection cavity and has a convection port extending through it. The convection port, the air outlet, the first air inlet, and the second air inlet are all staggered.
[0020] Secondly, this utility model also provides a gas water heater, which includes:
[0021] chassis;
[0022] The burner as described in any one of the first aspects is disposed within the housing.
[0023] The beneficial effects of this utility model are:
[0024] Firstly, by arranging multiple first air inlets or multiple second air inlets in a non-equidistant distribution, more air inlets can be concentrated in areas of the casing closer to heat radiation and where temperatures rise more rapidly, while fewer air inlets are present in other areas. When cooling air enters through the first and second air inlets, more cooling air enters the higher-temperature areas, while less enters the lower-temperature areas. This results in better heat dissipation in the high-temperature areas while preventing excessive heat dissipation in the low-temperature areas. Therefore, in use, the airflow of the cooling casing is altered simply by changing the layout of the air inlets. This not only reduces manufacturing difficulty and cost, making it easy to implement, but also ensures efficient heat dissipation in the high-temperature areas of the casing while preventing excessive heat dissipation in the low-temperature areas. This ensures that the overall temperature difference of the casing remains within a safe range, preventing accelerated aging of the casing and reducing the possibility of high-temperature flue gas leakage due to localized deformation of the casing, thus improving the overall safety of the equipment.
[0025] Secondly, when the gas water heater is in use, the air-cooled air can be concentrated in the high-temperature area of the outer shell to achieve more efficient heat dissipation in the high-temperature area, thereby ensuring that the temperature difference on the burner surface is within a safe range, effectively extending the service life of the burner, while reducing the possibility of high-temperature flue gas leakage due to deformation, and reducing the possibility of other gas components in the casing being affected by high-temperature flue gas, thereby effectively improving the safety of the gas water heater. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the burner structure in an embodiment of this utility model;
[0027] Figure 2 This is a front view of the burner in an embodiment of this utility model;
[0028] Figure 3 This is a schematic diagram of the internal structure of the burner in an embodiment of this utility model;
[0029] Figure 4 This is a schematic diagram of the structure of the burner shell, heat insulation plate and convection plate in an embodiment of this utility model;
[0030] Figure 5 This is an exploded structural diagram of the burner in an embodiment of this utility model;
[0031] Figure 6 This is a schematic diagram of the internal structure of the gas burner in an embodiment of this utility model.
[0032] In the picture:
[0033] 1. Outer casing; 11. First air inlet; 12. Second air inlet; 13. Air guide strip; 14. Third air inlet; 2. Heat insulation plate; 21. Air outlet; 3. Convection plate; 31. Convection port; 4. Casing; X, First direction. Detailed Implementation
[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0037] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0038] This utility model discloses a burner and a gas water heater.
[0039] Reference Figures 1 to 5The burner includes a housing 1. The side wall of the housing 1 has a first air inlet 11 and a second air inlet 12 spaced apart. The first air inlet 11 includes a plurality of first air inlets, and the second air inlet 12 includes a plurality of second air inlets. The plurality of first air inlets or the plurality of second air inlets are distributed at non-equal intervals along a first direction X.
[0040] Specifically, the outer shell 1 is formed by a plate-like structure, with its upper end sealingly fitted to the heat exchanger and its lower end providing a combustion structure. Through holes are formed on each side wall of the outer shell 1 as a first air inlet and a second air inlet. The through holes can be elongated, directional, or circular, or the first and second air inlets can be arranged only on some side walls. In this embodiment, the outer shell 1 is cuboid in shape, with the first and second air inlets formed on two opposite side walls, and multiple spaced third air inlets forming a third air inlet 14 on the other two opposite side walls. The third air inlet 14 is located at the center of the shell along the vertical direction.
[0041] Multiple first air inlets form a first air inlet 11, and multiple second air inlets form a second air inlet 12. The first air inlets 11 and the second air inlets 12 are located on the upper and lower sides or the left and right sides of the outer casing 1, respectively. Both the multiple first air inlets and the multiple second air inlets are distributed along a first direction X. The first direction X can be the length direction of the casing sidewall or a direction that maintains a certain angle with the length direction of the casing sidewall. The spacing between any two adjacent first air inlets is different; this spacing can gradually change or abruptly change along the first direction X, resulting in a non-equidistant distribution of the multiple first air inlets. Similarly, the multiple second air inlets can also be non-equidistantly distributed. The specific spacing variation is designed according to actual heat dissipation requirements. More first air inlets or second air inlets can be provided in areas with higher temperatures; this utility model does not specifically limit this.
[0042] By arranging multiple first air inlets or multiple second air inlets in a non-equidistant distribution, more air inlets can be concentrated in areas of the outer casing 1 that are closer to heat radiation and where the temperature rises more rapidly, while fewer air inlets are found in other areas. When cooled air enters through the first air inlet 11 and the second air inlet 12, more cooled air enters the higher-temperature areas, while less enters the lower-temperature areas. This results in better heat dissipation in the high-temperature areas while preventing excessive heat dissipation in the low-temperature areas. Therefore, in use, the airflow of the outer casing 1 is altered simply by changing the layout of the air inlets. This not only reduces manufacturing difficulty and cost, making it easy to implement, but also ensures efficient heat dissipation in the high-temperature areas of the outer casing 1 while preventing excessive heat dissipation in the low-temperature areas. This ensures that the overall temperature difference of the outer casing 1 remains within a safe range, preventing accelerated aging of the outer casing 1 and reducing the possibility of high-temperature flue gas leakage due to localized deformation of the outer casing 1, thus improving the overall safety of the equipment.
[0043] Optionally, along the first direction X, the spacing between two adjacent first air inlets increases in the direction away from the sidewall edge of the housing 1.
[0044] Specifically, in the first direction X, the spacing between the multiple first air inlets 11 located in the middle of the side wall of the outer casing 1 is larger, while the spacing between the multiple first air inlets 11 near the edge of the side wall of the outer casing 1 is smaller. This makes the multiple air inlets more concentrated at the edge of the side wall of the outer casing 1, and more dispersed in the middle of the side wall of the outer casing 1. This allows more air-cooled air to enter from the edge, resulting in better heat dissipation for high-temperature areas.
[0045] Optionally, multiple second air inlets are distributed at equal intervals along the first direction X.
[0046] Specifically, multiple second air inlets are evenly distributed so that the air-cooled air can enter the outer casing 1 evenly through the second air inlet 12, so as to effectively dissipate heat to all parts of the outer casing 1 and avoid the situation where the air-cooled air is overly concentrated in a certain area, resulting in poor heat dissipation effect in other areas, thereby further ensuring good overall heat dissipation effect of the outer casing 1.
[0047] Optionally, the first air inlet 11 is located on the side of the outer casing 1 closer to the heat exchanger 5, and the second air inlet 12 is located on the side of the outer casing 1 away from the heat exchanger.
[0048] Specifically, the upper side of the outer casing 1 is plugged into the heat exchanger to form a sealed connection. The first air inlet 11 is located close to the heat exchanger, while the second air inlet 12 is located away from the heat exchanger. This allows the first air inlet 11 to be located on the upper side of the outer casing 1, and the second air inlet 12 to be located on the lower side of the outer casing 1. Therefore, the air-cooled air can enter the interior of the outer casing 1 from the upper and lower sides respectively. The air-cooled air enters evenly from the lower side of the outer casing 1, while it enters the high-temperature area more concentratedly from the upper side of the outer casing 1. This allows for more efficient heat dissipation in the high-temperature area of the outer casing 1, while the low-temperature area can be fully cooled, further improving the overall heat dissipation effect of the outer casing 1.
[0049] Optionally, the burner also includes a heat insulation plate 2. The heat insulation plate 2 is disposed inside the outer casing 1 and forms a convection cavity between it and the side wall of the outer casing 1. The first air inlet 11 and the second air inlet 12 are both in communication with the convection cavity. The heat insulation plate 2 has an air outlet 21 in communication with the convection cavity.
[0050] Specifically, the heat insulation plate 2 is fixed to the inner side of the outer shell 1 and is arranged opposite to the outer shell 1, forming a convection cavity between the two. A through hole is opened in the heat insulation plate 2 as an air outlet 21. The air outlet 21 may also include multiple through holes. The shape of the through holes may be elongated, square or circular, etc., and this utility model does not limit them.
[0051] By forming a convection cavity, after the air-cooled air enters the outer casing 1 from the first air inlet 11 and the second air inlet 12, the air-cooled air will first enter the convection cavity and flow towards the air outlet 21, thereby forming an air curtain in the convection cavity to improve the heat insulation and heat dissipation effect of the outer casing 1.
[0052] Optionally, a plurality of guide strips 13 are provided at intervals on the inner sidewall of the outer casing 1, and the guide strips 13 extend along the direction of airflow of the air-cooled air.
[0053] Specifically, the sidewall of the outer casing 1 protrudes inward to form a guide strip 13. The flow direction of the air-cooled air in the convection cavity depends on the relative positions of the air outlet 21, the first air inlet 11, and the second air inlet 12. The guide strip 13 extends along the flow direction of the air-cooled air to separate and turbulent the airflow, allowing the air-cooled air to better dissipate heat from the outer casing 1. The specific number of guide strips 13 can be designed according to the size of the outer casing 1, and this utility model does not limit it.
[0054] Alternatively, in one embodiment, a plurality of guide strips 13 are distributed at equal intervals along a first direction X.
[0055] Specifically, the spacing between any two adjacent guide strips 13 is equal, so that multiple guide strips 13 are distributed at equal intervals, thereby separating the air-cooled air and ensuring that the air-cooled air can fill the convection cavity to effectively dissipate heat to the entire side wall of the outer casing 1.
[0056] Alternatively, in another embodiment, in the first direction X, the spacing between two adjacent guide strips 13 decreases in the direction away from the sidewall edge of the housing 1.
[0057] Specifically, more guide strips 13 are concentrated in the middle part of the side wall of the outer shell 1, while multiple guide strips 13 are dispersed in the edge part of the outer shell 1. This makes the space in the middle of the convection cavity along the first direction X smaller, while the space on both sides is larger, thereby ensuring that the air-cooled air can gather more on both sides of the convection cavity, improving the heat dissipation effect in the high-temperature area, and thus ensuring the uniformity of the surface temperature of the outer shell 1.
[0058] Optionally, the air outlet 21 is staggered from the first air inlet 11 and the second air inlet 12.
[0059] Specifically, the air outlet 21 can be located between the first air inlet 11 and the second air inlet 12, or it can be separated by a partition. This allows the air-cooled air to enter the convection cavity through the first air inlet 11 and the second air inlet 12, first come into contact with the heat insulation plate 2, and then gradually flow to the air outlet 21. This can improve the heat dissipation effect and also form an air curtain in the convection cavity to improve the heat dissipation effect on the side wall of the outer casing 1.
[0060] Optionally, the burner also includes a convection plate 3. The convection plate 3 is disposed in the convection cavity and has a convection port 31 extending through it. The convection port 31, the air outlet 21, the first air inlet 11 and the second air inlet 12 are all staggered.
[0061] Specifically, the convection plate 3 is erected vertically inside the convection cavity to divide the cavity into two. A convection port 31 is formed through the convection plate 3, which can be composed of multiple elongated through holes. The convection port 31 can be located at the middle of the convection plate 3 in the vertical direction, while the air outlet 21 can be located on the upper or lower side of the heat insulation plate 2. This arrangement ensures that the convection port 31, air outlet 21, first air inlet 11, and second air inlet 12 are staggered, meaning that none of them are directly connected.
[0062] By setting up the convection plate 3, when the air-cooled gas enters through the first air inlet 11 and the second air inlet 12, the air-cooled gas will first contact the convection plate 3 and flow to the heat insulation plate 2 through the convection port 31, and then enter the inner side of the heat insulation plate 2 through the air outlet 21 after contacting the heat insulation plate 2. This extends the flow path of the air-cooled gas in the convection cavity, thereby improving the heat insulation effect. Furthermore, since the convection port 31, the air outlet 21, the first air inlet 11, and the second air inlet 12 are all staggered, the air-cooled gas can form at least two layers of air curtain in the convection cavity, further improving the blocking effect against heat radiation. This effectively reduces the rate at which heat is transferred from the burner to the outer casing 1 under high load conditions, further ensuring that the temperature of the outer casing 1 can be kept within a safe range.
[0063] Reference Figure 6 The gas water heater includes a housing 4 and a burner as described above. The burner is located inside the housing 4.
[0064] When in use, the air-cooled air of this gas water heater can be concentrated in the high-temperature area of the outer casing 1, so as to achieve more efficient heat dissipation in the high-temperature area, thereby ensuring that the temperature difference on the burner surface is within a safe range, effectively extending the service life of the burner, while reducing the possibility of high-temperature flue gas leakage due to deformation, and reducing the possibility of other gas components inside the casing 4 being affected by high-temperature flue gas, thereby effectively improving the safety of the gas water heater.
[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A burner, characterized in that, include: The outer casing (1) has a first air inlet (11) and a second air inlet (12) spaced apart on its sidewall. The first air inlet (11) includes a plurality of first air inlets, and the second air inlet (12) includes a plurality of second air inlets. The plurality of first air inlets or the plurality of second air inlets are distributed non-equally along a first direction (X).
2. The burner according to claim 1, characterized in that, Along the first direction (X), the distance between two adjacent first air inlets increases in the direction away from the side wall edge of the outer casing (1).
3. The burner according to claim 1, characterized in that, Multiple second air inlets are distributed at equal intervals along the first direction (X).
4. The burner according to claim 2 or 3, characterized in that, The first air inlet (11) is located on the side of the outer casing (1) closer to the heat exchanger, and the second air inlet (12) is located on the side of the outer casing (1) away from the heat exchanger.
5. The burner according to claim 1, characterized in that, The burner also includes: A heat insulation plate (2) is disposed inside the outer shell (1) and forms a convection cavity between it and the side wall of the outer shell (1). The first air inlet (11) and the second air inlet (12) are both connected to the convection cavity. The heat insulation plate (2) has an air outlet (21) connected to the convection cavity.
6. The burner according to claim 5, characterized in that, Multiple guide strips (13) are provided at intervals on the inner sidewall of the outer shell (1), and the guide strips (13) extend along the direction of airflow.
7. The burner according to claim 6, characterized in that, The plurality of the guide strips (13) are equally spaced along the first direction (X); or In the first direction (X), the spacing between two adjacent guide strips (13) decreases in the direction away from the sidewall edge of the outer shell (1).
8. The burner according to claim 5, characterized in that, The air outlet (21) is offset from the first air inlet (11) and the second air inlet (12).
9. The burner according to claim 5, characterized in that, The burner also includes: The convection plate (3) is disposed in the convection cavity and has a convection port (31) through it. The convection port (31), the air outlet (21), the first air inlet (11) and the second air inlet (12) are all staggered.
10. A gas-fired water heater, characterized in that, include: Casing (4); The burner as described in any one of claims 1 to 9 is disposed within the housing (4).