Combustor and gas water heater

Abstract

The present application belongs to the technical field of kitchen appliances, and discloses a burner and a gas water heater. The burner comprises a shell, a heat insulation plate and a flow guide. The top of the shell has a connecting piece, an installation space is formed outside the connecting piece, the installation space is used for sealing cooperation with a heat exchanger, a flow guide space is formed inside the connecting piece to guide high-temperature gas into the heat exchanger, and the flow guide has a flow guide arc surface for guiding the high-temperature gas into the flow guide space. Therefore, the burner is sealingly connected with the heat exchanger, which can reduce the possibility of the high-temperature gas diffusing outward and avoid low-temperature air entering the inside through the connecting part. The flow guide arc surface and the flow guide space can effectively reduce the possibility of the high-temperature gas forming a vortex or a dead zone at the joint of the burner and the heat exchanger, ensure that the high-temperature gas can smoothly enter the heat exchanger, effectively improve the heat transfer efficiency of the high-temperature gas, and also help to ensure that the burner can continuously and stably operate.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and more particularly to burners and gas water heaters. Background Technology

[0002] In a gas water heater, the burner and heat exchanger are the core heat exchange structures, and the rationality of their connection design directly affects the thermal efficiency, safety, and service life of the equipment.

[0003] In existing technologies, the top of the burner is directly connected to the heat exchanger, and a sealing structure is installed at the connection point to ensure the airtightness of the connection, allowing the high-temperature gas in the burner to flow into the heat exchanger.

[0004] However, due to structural design errors, differences in the thermal expansion and contraction characteristics of materials, or errors in installation processes, gaps can easily form between the burner and the heat exchanger when high-temperature gas is continuously flowing, causing hot gas to diffuse outward and potentially creating safety hazards. Moreover, when high-temperature gas enters the heat exchanger from the burner, the abrupt change in cross-section can easily form eddies or dead zones, which in turn interfere with the flow of high-temperature gas and cause a decrease in heat transfer efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a burner and a gas water heater that solves the problem in the prior art that high-temperature gas in the burner tends to diffuse outward when entering the heat exchanger, and that eddies or dead zones are easily formed during the flow of high-temperature gas, resulting in poor heat transfer efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a burner comprising:

[0008] The outer casing has a connecting piece at its top, which extends upward along the gas flow direction. The side of the connecting piece near the outer casing extends obliquely inward toward the interior of the outer casing to form an installation space on the outside of the connecting piece. The installation space is used for sealing with a heat exchanger. A flow guiding space is formed on the inside of the connecting piece to guide high-temperature gas into the heat exchanger.

[0009] A heat insulation plate is disposed on the inner side wall of the outer casing;

[0010] A flow guide is disposed on the side of the heat insulation plate near the connecting piece. The flow guide extends at least partially into the flow guide space and has a flow guide arc surface that guides high-temperature gas into the flow guide space.

[0011] Optionally, a convection cavity is formed between the outer shell and the heat insulation plate. The outer shell has an air inlet communicating with the convection cavity, and the heat insulation plate has an air outlet communicating with the convection cavity. The air inlet and the air outlet are staggered.

[0012] Optionally, the heat insulation panel includes:

[0013] A first heat insulation plate is provided between the first heat insulation plate and the outer shell, and a convection plate is provided through the convection plate with a convection port. The convection port is staggered from the air inlet and the air outlet.

[0014] Optionally, the air inlet is located on the upper or lower side of the outer casing, the air outlet is located on the upper or lower side of the first heat insulation plate, and the convection port is located in the middle of the convection plate.

[0015] Optionally, the heat insulation panel includes:

[0016] The second heat insulation plate has an air outlet located in the middle of it, and an air inlet located on the upper or lower side of the outer casing.

[0017] Optionally, a plurality of guide strips are provided at intervals on the inner sidewall of the housing, and the guide strips extend along the gas flow direction.

[0018] Optionally, the guide strips are evenly spaced along a first direction; or

[0019] In the first direction, the spacing between two adjacent guide strips decreases in the direction away from the edge of the outer casing sidewall.

[0020] Optionally, the extending direction of the air inlet intersects the extending direction of the air outlet.

[0021] Optionally, the air inlets are provided on both the upper and lower sides of the housing.

[0022] Optionally, the air inlet includes a plurality of air inlet holes spaced apart along the second direction.

[0023] Optionally, in the second direction, the spacing between two adjacent air inlets increases in a direction away from the edge of the housing sidewall.

[0024] Optionally, the number of air inlets located on the upper side of the housing is greater than the number of air inlets located on the lower side of the housing.

[0025] Optionally, the plurality of air inlets located on the lower side of the housing are distributed at equal intervals.

[0026] Optionally, the flow guide includes:

[0027] A flow guide plate, wherein the flow guide arc surface is disposed on the side of the flow guide plate opposite to the outer shell.

[0028] Optionally, the guide plate is provided with a plurality of mounting pieces at intervals, and the mounting pieces are fixedly connected to the connecting pieces; and / or

[0029] The flow-guiding arc surface is provided with multiple reinforcing grooves spaced apart; and / or

[0030] The bending angle of the guide arc surface is between 30° and 80°.

[0031] In a second aspect, the present invention also provides a gas water heater, comprising:

[0032] chassis;

[0033] The burner as described in any one of the first aspects is disposed within the housing.

[0034] The beneficial effects of this invention are:

[0035] Firstly, by setting a connecting piece on the top of the outer shell, and extending the connecting piece at an angle to form an installation space and a flow guiding space respectively, the installation space can form a sealed fit with the heat exchanger, so that the heat exchanger and the outer shell can make full contact, thereby ensuring that the connection between the two can form an effective sealed fit. The flow guiding arc surface set on the flow guiding component can guide the high-temperature gas into the flow guiding space, which can guide the high-temperature gas during flow. At the same time, the connecting piece can also connect with the inner wall of the heat exchanger, thereby avoiding the space with abrupt cross-section changes, ensuring that the high-temperature gas can be smoothly guided into the heat exchanger to quickly achieve heat exchange of the high-temperature gas. The setting of the heat insulation plate ensures that the high-temperature gas does not directly contact the outer shell, thereby avoiding the continuous rise of the outer shell temperature. Therefore, during use, this burner can form a constriction on the upper side of the outer shell through the installation space, achieving a better sealing connection with the heat exchanger through plug-in fitting and fixed connection. This reduces the impact of design and installation process errors on the seal, and also reduces the possibility of deformation due to heat during continuous flow of high-temperature gas, which could reduce the sealing effect. A better seal prevents both high-temperature gas leakage and the entry of low-temperature air into the outer shell through the connection. Furthermore, the guide arc surface and guide space effectively guide the high-temperature gas flow. The guide arc surface and connecting plate are close to or even flush with the inner wall of the heat exchanger, preventing abrupt changes in cross-section in the direction of high-temperature gas flow. This effectively reduces the possibility of high-temperature gas forming vortices or dead zones at the junction of the burner and heat exchanger, ensuring smooth entry of high-temperature gas into the heat exchanger, effectively improving heat transfer efficiency, and also contributing to the continuous and stable operation of the burner, thereby improving combustion efficiency.

[0036] Secondly, during operation, the high-temperature gas inside the burner is smoothly guided to the heat exchanger, ensuring continuous and stable operation of the burner over a long period, thus effectively improving combustion efficiency. Simultaneously, the burner's internal air-cooling structure effectively dissipates heat from the burner's outer shell, reducing the possibility of heat radiating outwards through the shell. Furthermore, air cooling can also return heat transferred to the outer shell to the burner, improving heat utilization and further enhancing combustion efficiency. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the burner structure in Embodiment 1 of the present invention;

[0038] Figure 2 This is a front structural cross-sectional view of the burner in Embodiment 1 of the present invention;

[0039] Figure 3 This is a side cross-sectional view of the burner in Embodiment 1 of the present invention;

[0040] Figure 4 This is an exploded view of the burner structure in Embodiment 1 of the present invention.

[0041] Figure 5 This is a schematic diagram of the internal structure of the burner in Embodiment 1 of the present invention.

[0042] Figure 6 This is a schematic diagram of the structure of the gas water heater in Embodiment 1 of the present invention.

[0043] Figure 7 This is a schematic diagram of the burner structure in Embodiment 2 of the present invention;

[0044] Figure 8 This is a schematic diagram of the burner in Embodiment 3 of the present invention.

[0045] In the picture:

[0046] 1. Outer shell; 11. Air inlet; 12. Guide strip; 2. Connecting plate; 21. Installation space; 22. Guide space; 3. Heat exchanger; 4. Insulation plate; 41. Air outlet; 42. First insulation plate; 43. Convection plate; 44. Convection port; 45. Second insulation plate; 5. Guide component; 51. Guide plate; 52. Mounting plate; 53. Reinforcing groove; 6. Housing. Detailed Implementation

[0047] 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 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, and not all of the structures.

[0048] In the description of this invention, 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 invention based on the specific circumstances.

[0049] 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.

[0050] 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0051] This invention discloses a burner and a gas water heater.

[0052] Example 1

[0053] Reference Figures 1 to 3 The burner includes a housing 1, a heat insulation plate 4, and a flow guide 5. The top of the housing 1 has a connecting piece 2, which extends upward along the gas flow direction. The side of the connecting piece 2 near the housing 1 extends obliquely inward to form an installation space 21 on the outside of the connecting piece 2. The installation space 21 is used for sealing and fitting with the heat exchanger 3. A flow guide space 22 is formed on the inside of the connecting piece 2 to guide the high-temperature gas into the heat exchanger 3. The heat insulation plate 4 is disposed on the inner wall of the housing 1. The flow guide 5 is disposed on the side of the heat insulation plate 4 near the connecting piece 2. The flow guide 5 extends at least partially into the flow guide space 22 and has a flow guide arc surface that guides the high-temperature gas into the flow guide space 22.

[0054] Specifically, the outer shell 1 is formed by a plate-like structure, and its cross-sectional shape can be square. A connecting piece 2 is located on the top of the outer shell 1. The two can be an integral structure or fixedly connected by welding or other methods. The connecting piece 2 includes an integral fixing part and a connecting part. The lower side of the fixing part is fixedly connected to the outer shell 1, while the upper side extends inclinedly inwards towards the interior of the outer shell 1. The connecting part is located on the side of the fixing part away from the outer shell 1. The connecting part can extend vertically upwards, continue to extend inclinedly inwards towards the interior of the outer shell 1, or extend inclinedly outwards towards the exterior of the outer shell 1. A corresponding installation space 21 is formed on the outer side of the connecting piece 2 to accommodate the heat exchanger 3. The lower side of the heat exchanger 3 can be inserted into the installation space 21. Multiple connection positions are spaced apart on the fixing part, each of which can be fixedly connected to the heat exchanger 3. The sidewalls of both the connecting part and the fixing part are fitted against the inner wall of the heat exchanger 3 to achieve a sealed connection. To improve the sealing effect, a high-temperature resistant coating or sealing gasket can be provided on the fitted sidewalls. In this embodiment, the connection position is provided with connection holes, and a bolt can be inserted into each connection hole to achieve a fixed connection between the fixing part and the heat exchanger 3. A guide space 22 with at least a partially gradually decreasing space is formed in the connecting piece 2. The guide space 22 can gather the high temperature gas in the middle and guide it into the heat exchanger 3.

[0055] The heat insulation plate 4 is fixed to the inner wall of the outer shell 1. The two can be attached to each other or maintain a certain gap. The heat insulation plate 4 is made of a material with a high heat insulation coefficient. A flow guide 5 is provided on the side of the heat insulation plate 4 near the connecting piece 2. The flow guide 5 can be integral with the heat insulation plate 4, or it can be fixed by bolts or welding. The flow guide 5 extends along the gas flow direction so that its upper side can partially extend into the flow guide space 22. On the side of the flow guide 5 away from the outer shell 1, it protrudes in an arc shape into the inner side of the outer shell 1 to form a flow guide arc surface.

[0056] By setting a connecting piece 2 on the top of the outer shell 1, and the connecting piece 2 extending obliquely to form an installation space 21 and a flow guiding space 22 respectively, the installation space 21 can form a sealed fit with the heat exchanger 3, so that the heat exchanger 3 and the outer shell 1 can make full contact, thereby ensuring that the connection between the two can form an effective sealed fit. The flow guiding arc surface set on the flow guiding member 5 can guide the high temperature gas into the flow guiding space 22, and the flow guiding space 22 can guide the high temperature gas when it flows. At the same time, the connecting piece 2 can also connect with the inner wall of the heat exchanger 3, thereby avoiding the space with abrupt cross-section changes, ensuring that the high temperature gas can be smoothly guided into the heat exchanger 3 to quickly realize the heat exchange of the high temperature gas. The setting of the heat insulation plate 4 ensures that the high temperature gas does not directly contact the outer shell 1, so as to avoid the continuous rise of the temperature of the outer shell 1. Therefore, during use, the burner can form a constriction on the upper side of the outer shell 1 through the installation space 21, and form a good sealing connection with the heat exchanger 3 through plug-in fitting and fixed connection. This reduces the impact of design errors and installation process errors on the seal, and also reduces the possibility of the sealing effect being reduced due to deformation caused by heat during continuous flow of high-temperature gas. The good sealing effect can prevent high-temperature gas leakage on the one hand, and prevent low-temperature air from entering the interior of the outer shell 1 through the connection. The guide arc surface and the guide space 22 can guide the high-temperature gas, and the guide arc surface and the connecting piece 2 can be close to or even flush with the inner wall of the heat exchanger 3, so that there is no space for abrupt change in cross-section in the direction of high-temperature gas flow. This effectively reduces the possibility of high-temperature gas forming vortices or dead zones at the junction of the burner and the heat exchanger 3, ensuring that the high-temperature gas can smoothly enter the heat exchanger 3, effectively improving heat transfer efficiency, and also helping to ensure the continuous and stable operation of the burner, thereby improving combustion efficiency.

[0057] Reference Figure 4 and Figure 5 Optionally, a convection cavity is formed between the outer shell 1 and the heat insulation plate 4. The outer shell 1 has an air inlet 11 communicating with the convection cavity, and the heat insulation plate 4 has an air outlet 41 communicating with the convection cavity. The air inlet 11 and the air outlet 41 are staggered.

[0058] Specifically, the heat insulation plate 4 and the outer shell 1 are spaced apart to form a convection cavity between them. The outer shell 1 has an air inlet 11, which consists of multiple elongated through holes. The air inlet 11 can be located on the upper or lower side of the outer shell 1, or in the middle of the outer shell 1, and the multiple through holes can be evenly spaced. The heat insulation plate 4 has an air outlet 41, which can also be composed of multiple elongated through holes. The air outlet 41 is staggered from the air inlet 11. That is, when the air inlet 11 is located on the upper or lower side of the outer shell 1, the air outlet 41 is located in the middle of the heat insulation plate 4; conversely, when the air inlet 11 is located in the middle of the outer shell 1, the air outlet 41 is located on the upper or lower side of the heat insulation plate 4. It should be understood that the staggered distribution of the air inlet 11 and the air outlet 41 is sufficient; their relative positions can be designed according to the actual size of the convection cavity.

[0059] By setting up a convection cavity, while the high-temperature gas flows towards the heat exchanger 3, external air is also drawn into the convection cavity by a fan through the air inlet 11 of the outer casing 1. At this time, the air temperature is low, and after being drawn into the convection cavity, it forms air-cooled gas. Due to the staggered distribution of the air outlet 41 and the air inlet 11, the air-cooled gas will directly and fully contact the heat insulation plate 4 upon entering the convection cavity, and then flow into the inner side of the heat insulation plate 4 through the air outlet 41 and enter the heat exchanger 3 along with the high-temperature gas. In this way, the air-cooled air can dissipate heat from the heat insulation plate 4, reducing the temperature of the heat insulation plate 4 itself. At the same time, due to the staggered distribution of the air inlet 11 and the air outlet 41, the air-cooled gas forms an air curtain in the convection cavity, which has a heat insulation effect, reducing the intensity of heat radiation to the outer casing 1 and reducing the possibility of the temperature of the outer casing 1 continuously rising. Furthermore, after the air-cooled gas exchanges heat with the heat insulation plate 4, it enters the heat insulation plate 4 again, which can carry the heat transferred to the heat insulation plate 4 and the outer shell 1 back into the inner side of the heat insulation plate 4 and enter the heat exchanger 3 together with the original high-temperature gas for heat exchange, thereby further improving the heat utilization rate, reducing heat damage, and effectively improving the efficiency of the burner.

[0060] Optionally, the heat insulation plate 4 includes a first heat insulation plate 42, and a convection plate 43 is provided between the first heat insulation plate 42 and the outer shell 1. The convection plate 43 has a convection port 44 through it, and the convection port 44 is staggered from the air inlet 11 and the air outlet 41.

[0061] Specifically, the heat insulation plates 4 disposed on the front and rear sides of the outer casing 1 are the first heat insulation plates 42. The convection plate 43 is erected in the convection cavity to divide the convection cavity into two. A convection port 44 is opened through the convection plate 43. The convection port 44 can also be composed of multiple elongated through holes. The convection port 44, the air inlet 11 and the air outlet 41 are all staggered, that is, the three are not directly connected.

[0062] By setting up convection plate 43, when the air-cooled gas enters through air inlet 11, it first contacts convection plate 43 and flows through convection port 44 to heat insulation plate 4. After contacting heat insulation plate 4, it enters the inner side of heat insulation plate 4 through air outlet 41. 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 44, air inlet 11, and air outlet 41 are all staggered, the air-cooled gas can form at least two layers of air curtains in the convection cavity, further improving the blocking effect against heat radiation.

[0063] Optionally, the air inlet 11 is located on the upper or lower side of the outer casing 1, the air outlet 41 is located on the upper or lower side of the first heat insulation plate 42, and the convection port 44 is located in the middle of the convection plate 43.

[0064] Specifically, air outlets 41 can be opened on both the upper and lower sides of the first heat insulation plate 42, and air inlets 11 can be opened on both the upper and lower sides of the outer shell 1 corresponding to the first heat insulation plate 42. A convection port 44 is opened in the middle of the convection plate 43, so that after the air-cooled gas enters through the air inlet 11, it will gather in the middle of the convection plate 43 to form an air curtain, and then flow to the first heat insulation plate 42 through the convection port 44, and then disperse to flow to the air outlets 41 on the upper and lower sides of the first heat insulation plate 42 respectively, thereby forming another air curtain.

[0065] Optionally, the heat insulation plate 4 includes a second heat insulation plate 45. The air outlet 41 is located in the middle of the second heat insulation plate 45, and the air inlet 11 is located on the upper or lower side of the outer casing 1.

[0066] Specifically, the heat insulation plates 4 provided on the left and right sides of the outer shell 1 are the second heat insulation plates 45. The air outlet 41 of the second heat insulation plate 45 is located in the middle. The upper and lower sides of the outer shell 1 corresponding to the second heat insulation plate 45 can be provided with air inlets 11 so that the air-cooled gas will gather in the middle of the second heat insulation plate 45 after entering the air inlet 11 to form an air curtain, and then flow into the inner side of the second heat insulation plate 45 through the air outlet 41.

[0067] In this embodiment, since the high-temperature gas is more concentrated on the front and rear sides of the outer casing 1, while the high-temperature gas is relatively less on the left and right sides, the heat insulation plates 4 on the front and rear sides of the outer casing 1 are designated as first heat insulation plates 42, and the heat insulation plates 4 on the left and right sides of the outer casing 1 are designated as second heat insulation plates 45. It should be understood that the specific distribution of the first heat insulation plates 42 and the second heat insulation plates 45 can be designed according to the actual burner structure. All heat insulation plates 4 can be set as first heat insulation plates 42, or all can be set as second heat insulation plates 45.

[0068] Optionally, a plurality of guide strips 12 are provided at intervals on the inner sidewall of the outer casing 1, and the guide strips 12 extend along the gas flow direction.

[0069] Specifically, the inner sidewall of the outer casing 1 protrudes inward to form a guide strip 12. The guide strip 12 extends vertically, and its side may or may not contact the convection plate 43 or the heat insulation plate 4. Multiple guide strips 12 are evenly spaced along a first direction, which may intersect the gas flow direction. In this embodiment, the first direction is perpendicular to the gas flow direction. By setting the guide strip 12, a cut is formed after the air-cooled gas enters, thereby ensuring uniform flow of the air-cooled gas. Simultaneously, the guide strip 12 also improves the strength of the outer casing 1.

[0070] Optionally, the extension direction of the air inlet 11 intersects the extension direction of the air outlet 41.

[0071] Specifically, the through holes included in the air inlet 11 extend vertically, while the through holes included in the air outlet 41 extend horizontally. Alternatively, the through holes included in the air inlet 11 can extend horizontally, while the through holes included in the air outlet 41 can extend vertically. This further improves the convection effect of the air-cooled gas during the flow process, ensuring that the air-cooled gas can flow evenly into the heat insulation plate 4 through the air outlet 41.

[0072] Reference Figure 2 and Figure 3 Optionally, the flow guide 5 includes a flow guide plate 51. The flow guide arc surface is disposed on the side of the flow guide plate 51 opposite to the outer casing 1.

[0073] Specifically, a guide plate 51 is provided only on the first heat insulation plate 42, and the two are integrated into one structure. The guide plate 51 is bent inward as a whole to form the aforementioned guide arc surface. The bending degree can be designed according to the actual space, and the present invention does not limit it. In this embodiment, the bending angle of the guide arc surface is between 30° and 80°.

[0074] By setting the guide plate 51 to form the guide arc surface, it is easy to form the guide arc surface with various bending angles, which helps to reduce the processing difficulty. The protruding part of the guide arc surface can be flush with the inner side of the heat exchanger 3, so that there is no space for abrupt change of cross section in the flow path of high temperature gas, ensuring a good guiding effect for high temperature gas.

[0075] Optionally, a plurality of mounting pieces 52 are provided at intervals on the guide plate 51, and the mounting pieces 52 are fixedly connected to the connecting piece 2.

[0076] Specifically, a mounting plate 52 is provided on the top wall of the guide plate 51. The two can be integrated into one piece. The mounting plate 52 extends obliquely corresponding to the fixing part of the connecting plate 2, and the side of the mounting plate 52 fits against the side of the fixing part. The two can be fixed by welding, snap-fitting, or bolting. In this embodiment, each mounting plate 52 has a through-hole, and a fastening bolt connected to the fixing part can be inserted into each through-hole. The number of mounting plates 52 can be designed according to the actual length of the guide plate 51, and this invention does not limit it.

[0077] By setting multiple mounting pieces 52, the upper side of the guide plate 51 is fixedly connected to the connecting piece 2, so that both the upper and lower sides of the guide plate 51 are fixed, thereby improving the installation stability of the guide plate 51 and ensuring that the guide plate 51 will not shake during the flow of gas and thus affect the guiding effect.

[0078] Optionally, the guide arc surface is provided with multiple reinforcing grooves 53 spaced apart.

[0079] Specifically, a heating groove is formed by recessing the flow guide arc surface, and the reinforcing groove 53 extends in the vertical direction. Multiple reinforcing grooves 53 are evenly distributed along the length of the flow guide plate 51 to increase the structural strength of the flow guide plate 51 and ensure that the strength of the flow guide plate 51 still meets the requirements after being heated, without deformation during the flow guiding process, so as to ensure stable flow guiding effect.

[0080] Reference Figure 6 The gas water heater includes a housing 6 and the burner described above. The burner is located inside the housing 6.

[0081] When in use, the high-temperature gas inside the burner is smoothly guided to the heat exchanger 3, ensuring the burner can operate continuously and stably for a long time, thus effectively improving combustion efficiency. Simultaneously, the burner's internal air-cooling structure effectively dissipates heat from the burner's outer shell 1, reducing the possibility of heat radiating outwards through the shell 1. Furthermore, air cooling can also return the heat transferred to the outer shell 1 back to the burner, improving heat utilization and further enhancing combustion efficiency.

[0082] Example 2

[0083] Based on Embodiment 1, the difference between this embodiment and Embodiment 1 lies in the different distribution of the guide strips 12 on the outer shell 1.

[0084] Reference Figure 7 In the first direction, the spacing between two adjacent guide strips 12 decreases in the direction away from the edge of the side wall of the housing 1.

[0085] Specifically, the first direction intersects with the gas flow direction. In this embodiment, the first direction is perpendicular to the gas flow direction, that is, the first direction is the width direction of the side wall of the outer shell 1. On the side wall of the outer shell 1, the spacing between two adjacent guide strips 12 is larger near the edge of the side wall, while the spacing between two adjacent guide strips 12 is smaller near the middle of the side wall. This allows for a larger number of guide strips 12 to be set in the middle of the side wall, and a smaller number of guide strips to be set at the edge of the side wall. This allows the non-equidistant distribution of multiple guide strips 12 to have a turbulence effect when the air-cooled air enters the convection cavity, thereby reducing the air-cooling space in the middle of the side wall and increasing the air-cooling space at the edge of the side wall, so as to ensure the uniformity of the burner surface temperature rise and improve the air-cooling effect.

[0086] Example 3

[0087] Based on Example 1, the difference between this example and Example 1 lies in the different distribution of the air inlet 11.

[0088] Reference Figure 8 Optionally, air inlets 11 are provided on both the upper and lower sides of the outer casing 1.

[0089] Specifically, air inlets 11 are provided on both the upper and lower sides of the outer casing 1, which can effectively increase the communication area between the convection cavity and the external space, thereby effectively increasing the amount of air-cooled air entering to meet the air-cooling requirements.

[0090] Optionally, the air inlet 11 includes a plurality of air inlet holes spaced apart along the second direction.

[0091] The second direction can be the width direction of the side wall of the outer casing 1, that is, multiple air inlets are distributed at intervals along the width direction of the side wall of the outer casing 1, so that the air-cooled air can enter the convection cavity from the outer casing 1 as needed, thereby further improving the air-cooling effect.

[0092] Optionally, in the second direction, the spacing between two adjacent air inlets increases in the direction away from the edge of the sidewall of the housing 1.

[0093] Specifically, on the side wall of the outer casing 1, the distance between two adjacent air inlets is smaller near the edge of the side wall, while the distance between two adjacent air inlets is larger near the middle of the side wall. This results in fewer air inlets and a lower density in the middle of the side wall, while there are more air inlets and a higher density at the edge of the side wall. This allows for a greater amount of air-cooled air to enter at the edge of the side wall and a smaller amount of air-cooled air to enter in the middle, thereby further optimizing the airflow pattern and better meeting the needs of air cooling.

[0094] Optionally, the number of air inlets located on the upper side of the housing 1 is greater than the number of air inlets located on the lower side of the housing 1.

[0095] Specifically, the more air inlets on the upper side of the outer casing 1, the more air-cooled air can flow in from the upper part of the outer casing 1 and then flow downwards from the upper part of the outer casing 1. This allows the air-cooled air to more effectively dissipate heat from the outer casing 1, thereby further enhancing the air-cooling effect.

[0096] Optionally, multiple air inlets located on the lower side of the housing 1 are distributed at equal intervals.

[0097] Specifically, the multiple air inlets that are evenly spaced allow the cooled air to flow in uniformly from the bottom of the outer casing 1, so that the cooled air can fully contact the outer casing 1 and dissipate heat effectively. Combined with the multiple air inlets that are not evenly spaced on the upper side of the outer casing 1, the parts of the outer casing 1 that are prone to rapid temperature rise can be efficiently cooled, thus significantly improving the overall heat dissipation effect of the outer casing 1.

[0098] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. 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 the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. Burner, characterized in that The application relates to a heat exchanger, which comprises the following parts: an outer shell (1), the top of the outer shell (1) is provided with a connecting plate (2) which extends upwards along the gas flow direction, the connecting plate (2) extends obliquely towards the inside of the outer shell (1) near one side of the outer shell (1) to form a mounting space (21) outside the connecting plate (2) for sealingly matching with a heat exchanger (3), and a flow guiding space (22) is formed inside the connecting plate (2) to guide high-temperature gas into the heat exchanger (3); a heat insulation plate (4) arranged on the inner side wall of the outer shell (1); a flow guiding piece (5) arranged on the side of the heat insulation plate (4) near the connecting plate (2), the flow guiding piece (5) extends at least partially into the flow guiding space (22) and has a flow guiding arc surface for guiding high-temperature gas into the flow guiding space (22).

2. The burner of claim 1, wherein A convection cavity is formed between the outer shell (1) and the heat insulation plate (4), the outer shell (1) is provided with an air inlet (11) which communicates with the convection cavity, the heat insulation plate (4) is provided with an air outlet (41) which communicates with the convection cavity, and the air inlet (11) and the air outlet (41) are distributed in a staggered mode.

3. The burner of claim 2, wherein The heat insulation plate (4) comprises: a first heat insulation plate (42), a convection plate (43) is arranged between the first heat insulation plate (42) and the outer shell (1), the convection plate (43) is provided with a convection opening (44) which penetrates through the convection plate (43), and the convection opening (44), the air inlet (11) and the air outlet (41) are all distributed in a staggered mode.

4. The burner of claim 3, wherein The air inlet (11) is arranged on the upper side or the lower side of the outer shell (1), the air outlet (41) is arranged on the upper side or the lower side of the first heat insulation plate (42), and the convection opening (44) is arranged in the middle of the convection plate (43).

5. The burner of claim 2, wherein The heat insulation plate (4) comprises: a second heat insulation plate (45), the air outlet (41) is arranged in the middle of the second heat insulation plate (45), and the air inlet (11) is arranged on the upper side or the lower side of the outer shell (1).

6. The burner of claim 2, wherein A plurality of flow guiding strips (12) are arranged on the inner side wall of the outer shell (1) in a spaced mode, and the flow guiding strips (12) extend along the gas flow direction.

7. The burner of claim 6, wherein The flow guiding strips (12) are distributed in a first direction in an equidistant mode; or In the first direction, the interval between two adjacent flow guiding strips (12) decreases along a direction away from the edge of the side wall of the outer shell (1).

8. The burner of claim 2, wherein The extending direction of the air inlet (11) intersects with the extending direction of the air outlet (41).

9. The burner of claim 2, wherein The air inlet (11) is arranged on the upper side and the lower side of the outer shell (1).

10. The burner of claim 2, wherein The air inlet (11) comprises a plurality of air inlet holes which are distributed in a second direction in a spaced mode.

11. The burner of claim 10, wherein In the second direction, the interval between two adjacent air inlet holes increases along a direction away from the edge of the side wall of the outer shell (1).

12. The burner of claim 10, wherein The number of the air inlet holes arranged on the upper side of the outer shell (1) is greater than the number of the air inlet holes arranged on the lower side of the outer shell (1).

13. The burner of claim 10, wherein The air inlet holes arranged on the lower side of the outer shell (1) are distributed in an equidistant mode.

14. Burner according to any one of claims 1 to 13, characterized in that The flow guiding piece (5) comprises: a flow guiding plate (51), and the flow guiding arc surface is arranged on the side of the flow guiding plate (51) which faces away from the outer shell (1).

15. The burner of claim 14, wherein A plurality of mounting pieces (52) are arranged on the deflector (51) at intervals, and the mounting pieces (52) are fixedly connected with the connecting pieces (2); and / or The deflector arc surface is provided with a plurality of reinforcing grooves (53) at intervals; and / or The bending angle of the deflector arc surface is between 30° and 80°.

16. A gas water heater characterised by, Comprise: A casing (6); The burner according to any one of claims 1 to 15 is arranged in the casing (6).

Images