Combustor and gas water heater
By setting multiple flame holes on the burner and adopting a gradient design and independent air intake channels, the problem of high and uneven flame height of the burner is solved, achieving a more stable and efficient combustion effect.
Patent Information
- Application Number
- CN202423036727.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-09
AI Technical Summary
The burner hole design of existing gas water heaters results in a high flame height during combustion, leading to poor flame uniformity and stability.
Multiple flame holes are set on the combustion cap, and multiple flame holes are formed by the combustion cap and the inner wall of the burner body. The width and area of a single flame hole are reduced. A gradient design is adopted to improve flame stability. An independent air intake channel is set to avoid interference.
It reduces the height of the combustion flame, improves the uniformity and stability of the flame, reduces flue gas emissions, and enhances the combustion efficiency and stability of the burner.
Smart Images
Figure CN223622902U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water heater technology, and in particular to a burner and a gas water heater. Background Technology
[0002] In gas water heater products, the burner is an important component. The harmonica-type burner used in existing gas water heaters usually adopts a structure composed of shell A plate, shell B plate, V-shaped plate and flame hole baffle. The flame hole baffle is usually a single-layer flat baffle structure. The flame holes formed by splicing the flame hole baffle with the shell and the flame hole baffle with the V-shaped plate are relatively long, and the area of each flame hole is relatively large. Under hot conditions during combustion, it is more prone to backfire, the flame is higher during combustion, and the flame uniformity and stability of the burner are poor. Utility Model Content
[0003] The main purpose of this invention is to provide a burner and a gas water heater that aims to reduce the flame height during combustion, thereby improving the uniformity and stability of the combustion flame.
[0004] To achieve the above objectives, the burner proposed in this utility model includes:
[0005] A burner body, the burner body having a cavity and a combustion port communicating with the cavity; and
[0006] A combustion cover is provided on the combustion port and extends toward the cavity. The combustion cover has a first flame hole and a second flame hole along its width direction. The combustion cover and the combustion port enclose a third flame hole. The first flame hole, the second flame hole and the third flame hole are distributed at intervals along the width direction of the burner body and communicate with the cavity.
[0007] The second flame hole is divided into a first flame stabilizing section, a middle section and a second flame stabilizing section along the length of the flame plate body. The width of the first flame stabilizing section and the second flame stabilizing section is not greater than the width of the middle section.
[0008] The first flame stabilizing section is gradually tapered from the middle section toward the first flame stabilizing section, and the second flame stabilizing section is gradually tapered from the middle section toward the first flame stabilizing section.
[0009] The combustion cover includes a cover body and a partition. The partition is located on one side of the cover body in the width direction. One side of the partition and the cover body enclose the first flame hole. The other side of the partition and the combustion port enclose the third flame hole. The partition is provided with a second flame hole, which is located between the first flame hole and the third flame hole.
[0010] The partition includes two partitions, which enclose a second flame hole and a second air intake channel communicating with the second flame hole. The second flame hole is connected to the cavity through the second air intake channel.
[0011] One of the partitions surrounds the periphery of the cover to form the first flame hole and a first air intake channel communicating with the first flame hole. The first flame hole communicates with the cavity through the first air intake channel. Another partition surrounds the inner wall of the cavity to form the third air intake channel and surrounds the combustion port to form the third flame hole. The third flame hole communicates with the cavity through the third air intake channel.
[0012] The firebox body has a first side plate and a second side plate arranged opposite to each other along the width direction. The first side plate and the second side plate enclose the cavity and the combustion port. The cover has a first cover plate and a second cover plate arranged opposite to each other along the width direction.
[0013] A partition is provided between the first side plate and the first cover plate. The first side plate, the first cover plate and the partition are combined to form a plurality of first combustion units. The plurality of first combustion units are distributed at intervals along the length direction of the burner body. Each first combustion unit includes a first flame hole and a first air intake channel, a second flame hole and a second air intake channel, and a third flame hole and a third air intake channel.
[0014] Another partition is provided between the second side plate and the second cover plate. The second side plate, the second cover plate and the other partition cooperate to form a plurality of second combustion units. The plurality of second combustion units are distributed at intervals along the length direction of the burner body. Each second combustion unit includes a first flame hole and a first air intake channel, a second flame hole and a second air intake channel, and a third flame hole and a third air intake channel.
[0015] The baffle extends from both sides of the burner body along its length toward the end of the baffle furthest from the combustion port.
[0016] The dimension of the partition along the depth direction of the second air intake channel is defined as L, where L is not greater than 9 mm and not less than 5 mm.
[0017] The partition is integrally formed with the cover, or the partition is assembled with the cover.
[0018] This utility model also proposes a gas water heater, including the burner described above.
[0019] The technical solution of this utility model involves setting a first and a second flame hole along the width direction of the combustion cap, and forming a third flame hole by enclosing the combustion cap with the inner wall of the burner body. The first, second, and third flame holes are distributed at intervals along the width direction of the burner body. Compared with the solution of setting one flame hole along the width direction of the combustion cap and enclosing the combustion cap with the combustion port to form another flame hole, by turning two flame holes into three flame holes, the width and area of each flame hole are reduced, so that the flame height can be lower when burning through the flame holes, making backfire less likely and improving the uniformity and stability of the combustion flame. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0021] Figure 1 A schematic diagram of the structure of an embodiment of the burner provided by this utility model;
[0022] Figure 2 for Figure 1 Partial sectional view at AA;
[0023] Figure 3 for Figure 1 Partial sectional view at BB;
[0024] Figure 4 for Figure 1 Top view of the burner;
[0025] Figure 5 for Figure 4 A magnified view of a portion at point A;
[0026] Figure 6 for Figure 1 Explosion diagram of the burner;
[0027] Figure 7 for Figure 1 A schematic diagram of the combustion cover at an angle in a burner;
[0028] Figure 8 for Figure 1 Another angle view of the combustion cover in the burner;
[0029] Figure 9 for Figure 1 A schematic diagram of the burner cover at an angle.
[0030] Explanation of icon numbers:
[0031] 100. Burner; 10. Burner body; 101. Cavity; 102. Combustion port; 103. First flame hole; 104. Second flame hole; 104a. First flame stabilizing section; 104b. Intermediate section; 104c. Second flame stabilizing section; 105. Third flame hole; 106. Second air intake channel; 107. First air intake channel; 108. Third air intake channel; 109. Air inlet; 11. First combustion unit; 12. Second combustion unit; 13. First side plate; 14. Second side plate; 15. Second protrusion; 20. Combustion cover; 21. Cover body; 21a. First cover plate; 21b. Second cover plate; 211. First protrusion; 212. First recessed area; 213. First protruding area; 22. Partition; 221. Partition plate.
[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0036] In gas water heater products, the burner is an important component. The harmonica-type burner used in existing gas water heaters usually adopts a structure composed of shell A plate, shell B plate, V-shaped plate and flame hole baffle. The flame hole baffle is usually a single-layer flat baffle structure. The flame holes formed by splicing the flame hole baffle with the shell and the flame hole baffle with the V-shaped plate are relatively long, and the area of each flame hole is relatively large. Under hot conditions during combustion, it is more prone to backfire, the flame is higher during combustion, and the flame uniformity and stability of the burner are poor.
[0037] This invention proposes a burner that aims to improve the uniformity and stability of the flame by modifying the flame holes, resulting in a lower flame height during combustion.
[0038] Please see Figures 1 to 9 In one embodiment of the present invention, the burner 100 includes a burner body 10 and a burner cover 20. The burner body 10 has a cavity 101 and a combustion port 102 communicating with the cavity 101. The burner cover 20 covers the combustion port 102 and extends toward the cavity 101. The burner cover 20 has a first flame hole 103 and a second flame hole 104 along its width direction. The burner cover 20 and the combustion port 102 enclose a third flame hole 105. The first flame hole 103, the second flame hole 104 and the third flame hole 105 are distributed at intervals along the width direction of the burner body 10 and communicate with the cavity 101.
[0039] In this utility model, the burner body 10 includes a first side plate 13 and a second side plate 14. The first side plate 13 and the second side plate 14 can be sheet metal parts. The first side plate 13 and the second side plate 14 are spliced together to form the burner body 10. The burner body 10 also has an air inlet 109. Two air inlets 109 can be provided. The cavity 101 connects the air inlets 109 and the combustion port 102. The side of the cavity 101 near the air inlet 109 can form a mixing section, and the side of the cavity 101 near the combustion port 102 can form a combustion section. The combustion gas enters the cavity 101 from the air inlet 109 for mixing. After mixing, it flows toward the combustion port 102 and is ejected from the first flame hole 103, the second flame hole 104, and the third flame hole 105. In the combustion process, the combustion cover 20 may include a cover body 21 and a partition 22. The first flame hole 103 and the third flame hole 105 may be disposed on both sides of the partition 22, and the second flame hole 104 may be disposed on the partition 22. Since the second flame hole 104 itself has a width when the partition 22 forms the second flame hole 104, compared with the scheme of not setting the second flame hole 104 on the partition 22, the width of the first flame hole 103 and the third flame hole 105 can be narrowed, thereby reducing the area of a single flame hole and narrowing the width of a single flame hole, thereby reducing the height of the flame in the flame hole, improving the uniformity and stability of the flame, and making the exhaust gas emission of the burner 100 lower during combustion.
[0040] The technical solution of this utility model provides a first flame hole 103 and a second flame hole 104 along the width direction of the combustion cover 20, and a third flame hole 105 is formed by the combustion cover 20 and the inner wall of the burner body 10. The first flame hole 103, the second flame hole 104 and the third flame hole 105 are distributed at intervals along the width direction of the burner body 10. Compared with the solution of providing one flame hole on each side of the combustion cover 20 along the width direction and forming another flame hole by enclosing each side of the combustion cover 20 with the combustion port 102 along the width direction, by turning two flame holes into three flame holes, the width of a single flame hole is reduced and the area of a single flame hole is smaller. Therefore, when burning through the flame holes, the flame height can be lower, backfire is less likely to occur, and it is beneficial to improve the uniformity and stability of the combustion flame.
[0041] See Figure 4 , Figure 5 As shown, in one embodiment, the width of the first fire hole 103 on both sides along the length direction of the fire bar body 10 is not greater than the width of the first fire hole 103 at the middle along the length direction of the fire bar body 10.
[0042] This configuration allows the wider central portion of the first burner hole 103 to provide a larger combustion area, forming a wider burner 100. This helps stabilize and maintain the flame, reducing flame swaying. Furthermore, the narrower side areas of the first burner hole 103 can increase the gas flow rate in those areas, making it easier for the gas to mix quickly when passing through the narrower channel, thus achieving more uniform combustion and resulting in lower flue gas emissions from the burner 100 during combustion.
[0043] Furthermore, the third fire hole 105 can also adopt a design that is narrower on both sides and wider in the middle. (See further...) Figure 4 , Figure 5 Optionally, the width of the third fire hole 105 on both sides along the length direction of the fire bar body 10 is not greater than the width of the third fire hole 105 at the middle along the length direction of the fire bar body 10.
[0044] Furthermore, since the second flame hole 104 is located between the first flame hole 103 and the third flame hole 105, the second flame hole 104 can also be designed to be wider in the middle and narrower on both sides. Optionally, the second flame hole 104 is divided into a first flame-stabilizing section 104a, a middle section 104b, and a second flame-stabilizing section 104c along the length of the flame plate body 10. The width of the first flame-stabilizing section 104a and the second flame-stabilizing section 104c is smaller than the width of the middle section 104b. Thus, when the width of the first flame-stabilizing section 104a and the second flame-stabilizing section 104c is smaller than the width of the middle section 104b, the combustion area of the middle section 104b of the second flame hole 104 is larger, while the combustion areas of the first flame-stabilizing sections 104a and the second flame-stabilizing sections 104c at both ends are smaller. This is beneficial for flame concentration, ensuring that the second flame hole 104 can achieve more uniform combustion during combustion, maintaining the stability of the combustion flame, and reducing the emission of combustion smoke.
[0045] Furthermore, since the present invention can form a second flame hole 104 through the partition 22 to disperse the area of the first flame hole 103 and the third flame hole 105, the second flame hole 104 can be narrower than the first flame hole 103 and the third flame hole 105. The flame of the second flame hole 104 is relatively lower and relatively stable during combustion. Therefore, it is not necessary to narrow the sides of the second flame hole 104. Thus, in other embodiments, optionally, the width of the first flame stabilizing section 104a and the second flame stabilizing section 104c is equal to the width of the middle section 104b.
[0046] In the above embodiments, when the areas on both sides of the first flame hole 103 are relatively narrow, the narrow areas on both sides of the first flame hole 103 can be set to a gradual change, that is, the width of the first flame hole 103 on both sides along the length direction of the burner body 10 is uniformly reduced. This setting results in a uniformly small change in the air intake on both sides of the first flame hole 103, thereby causing the height of the combustion flame on both sides of the first flame hole 103 to uniformly decrease. This avoids abrupt changes in the combustion air intake at both ends of the first flame hole 103, which could lead to unstable combustion on both sides of the first flame hole 103.
[0047] Additionally, the narrower areas on both sides of the third flame hole 105 can be configured as a gradual change. Optionally, the first flame stabilizing section 104a gradually narrows from the middle section 104b towards the first flame stabilizing section 104a, and the second flame stabilizing section 104c gradually narrows from the middle section 104b towards the first flame stabilizing section 104a. This also allows for more stable combustion in the areas on both sides of the third flame hole 105.
[0048] Furthermore, when the second flame hole 104 also adopts a design that is wider in the middle and narrower on both sides, the narrower areas on both sides of the second flame hole 104 can also be gradually varied to ensure the stability of combustion in the areas on both sides of the second flame hole 104. Optionally, the width of the second flame hole 104 is uniformly reduced on both sides along the length direction of the flame bar body 10.
[0049] The following is a detailed description of the structure of the combustion chamber 20. (See attached document.) Figure 5 , Figure 7 As shown, in one embodiment, the combustion cover 20 includes a cover body 21 and a partition 22. The partition 22 is disposed on one side of the cover body 21 in the width direction. One side of the partition 22 and the cover body 21 enclose to form the first flame hole 103. The other side of the partition 22 and the combustion port 102 enclose to form the third flame hole 105. The partition 22 is provided with a second flame hole 104, which is located between the first flame hole 103 and the third flame hole 105.
[0050] In this invention, the combustion cover 20 is installed from the combustion port 102 of the burner body 10 into the cavity 101. The sidewall of the cover 21 in the width direction of the combustion cover 20 may have spaced-apart first recessed areas 212 and first protruding areas 213. The inner wall of the cavity 101 may have spaced-apart second recessed areas and second protruding areas, extending to the combustion port 102. When the combustion cover 20 is installed from the combustion port 102 into the cavity 101, the first recessed area 212 faces the second recessed area, and the first protruding area 213 faces the second protruding area. The partition 22, as a shielding structure, is located between the cover 21 and the inner wall of the cavity 101. The first recessed area 212 abuts against one side of the partition 22, and the second protruding area abuts against the other side of the partition 22, so that the first recessed area 212 can surround the partition 22 to form the first flame hole 103, and the second recessed area can surround the combustion port 102 of the partition 22 to form the third flame hole 105. The two sides of the partition 22 can protrude towards the first flame hole 103 and the third flame hole 105 respectively, so that a closed recessed area is formed in the middle of the partition 22, thereby forming the second flame hole 104. Thus, when the second flame hole 104 is formed, the width of the first flame hole 103 and the third flame hole 105 is reduced accordingly, so that the widths of the first flame hole 103, the second flame hole 104 and the third flame hole 105 are all narrow. Thus, while keeping the length of the burner hole unchanged, the area of a single burner hole can be reduced by narrowing its width, thereby reducing the height of the flame and improving the uniformity and stability of the flame. Furthermore, this results in lower emissions of flue gas from the burner 100 during combustion.
[0051] When air is introduced through the first flame port 103, the second flame port 104, and the third flame port 105, to ensure a more stable and smooth air intake, please refer to... Figure 3 , Figure 5 As shown, optionally, the partition 22 includes two partitions 221, which together form a second fire hole 104 and a second air intake channel 106 communicating with the second fire hole 104. The second fire hole 104 is connected to the cavity 101 through the second air intake channel 106.
[0052] Specifically, two mutually spaced third recessed areas can be provided on the two partitions 221. The two third recessed areas enclose a second air intake channel 106. The second flame hole 104 can be formed at the end of the second air intake channel 106 near the combustion port 102. With this configuration, the second flame hole 104 can be connected to the cavity 101 through an independent air intake channel. When the second flame hole 104 is intake, it does not interfere with the first flame hole 103 and the third flame hole 105, which can ensure that the flame of the second flame hole 104 is more stable during combustion.
[0053] Alternatively, the first flame hole 103 and the third flame hole 105 can be provided with independent air intake channels when air is intake. Optionally, one of the partition plates 221 and the cover 21 surround each other to form the first flame hole 103 and the first air intake channel 107 communicating with the first flame hole 103. The first flame hole 103 communicates with the cavity 101 through the first air intake channel 107. Another partition plate 221 surrounds the inner wall of the cavity 101 to form the third air intake channel 108, and surrounds the combustion port 102 to form the third flame hole 105. The third flame hole 105 communicates with the cavity 101 through the third air intake channel 108.
[0054] The first flame hole 103 can be formed at one end of the first air intake channel 107 near the combustion port 102, and the third flame hole 105 can be formed at one end of the third air intake channel 108 near the combustion port 102. They can be enclosed by the combustion port 102 and the partition 221. This arrangement allows the first flame hole 103, the second flame hole 104, and the third flame hole 105 to be connected to the cavity 101 through independent air intake channels. The first flame hole 103, the second flame hole 104, and the third flame hole 105 do not interfere with each other during air intake, thus ensuring that the flames of the three flame holes are more stable during combustion.
[0055] In addition, when the second air intake channel 106 is formed by splicing two partitions 221 and the second fire hole 104 is formed, the forming of the second fire hole 104 can be made simpler, and the setting cost of the partition 22 is lower.
[0056] See Figure 4 , Figure 7 As shown, in one embodiment, the burner body 10 has a first side plate 13 and a second side plate 14 arranged opposite to each other in the width direction. The first side plate 13 and the second side plate 14 enclose the cavity 101 and the combustion port 102. The cover 21 has a first cover plate 21a and a second cover plate 21b arranged opposite to each other in the width direction.
[0057] A partition 22 is provided between the first side plate 13 and the first cover plate 21a. The first side plate 13, the first cover plate 21a and the partition 22 cooperate to form a plurality of first combustion units 11. The plurality of first combustion units 11 are distributed at intervals along the length direction of the burner body 10. Each first combustion unit 11 includes a first flame hole 103 and a first air intake channel 107, a second flame hole 104 and a second air intake channel 106, a third flame hole 105 and a third air intake channel 108.
[0058] This configuration allows the burner 100 to form multiple sets of spaced-apart first combustion units 11 along its length. Each first combustion unit 11 includes a first flame hole 103, a second flame hole 104, a third flame hole 105, and a third air intake channel 107 connecting the first flame hole 103, a second air intake channel 106 connecting the second flame hole 104, and a third air intake channel 108 connecting the third flame hole 105. This configuration ensures the combustion stability of the first combustion unit 11 while increasing the length of the combustion surface of the burner 100.
[0059] Alternatively, a plurality of second combustion units 12 distributed along the length direction can be formed by the second side plate 14, the second cover plate 21b and another partition 22. Optionally, another partition 22 is provided between the second side plate 14 and the second cover plate 21b. The second side plate 14, the second cover plate 21b and the other partition 22 cooperate to form a plurality of second combustion units 12. The plurality of second combustion units 12 are distributed at intervals along the length direction of the burner body 10. Each second combustion unit 12 includes a first flame hole 103 and a first air intake channel 107, a second flame hole 104 and a second air intake channel 106, a third flame hole 105 and a third air intake channel 108.
[0060] This configuration allows the burner 100 to form multiple sets of spaced combustion units along its length, and also allows the burner 100 to form a first combustion unit 11 and a second combustion unit 12 along its width. This increases the combustion width of the burner 100 by increasing the length of its combustion surface, thereby increasing the combustion power of the burner 100.
[0061] See Figure 3 , Figure 9 As shown, in one embodiment, the cover 21 protrudes towards the partition 22 to form a first protrusion 211. The first protrusion 211 is disposed near both sides of the burner body 10 along the length direction and is used to form the inner wall of the first air intake channel 107.
[0062] Thus, when the first protrusion 211 protruding towards the partition 22 is used to form the inner wall of the first air intake channel 107, the inner wall of the first air intake channel 107 will be relatively narrower. When the first protrusion 211 is used to form the first air intake channel 107 in the two regions along the length of the burner body 10, the first flame hole 103 in the two regions along the length of the burner body 10 will have a narrower air intake channel during combustion, which will result in the flame of the first flame hole 103 in the two regions along the length of the burner body 10 being relatively lower and the combustion being relatively more stable.
[0063] In addition, the third air intake channel 108 on both sides of the burner body 10 along its length can also be designed to be narrower than other third air intake channels 108. Optionally, the inner wall of the cavity 101 along its length protrudes towards the partition 22 to form the second protrusion 15. The second protrusion 15 is located near both sides of the burner body 10 along its length and is used to form the inner wall of the third air intake channel 108. It can be understood that the inner wall of the cavity 101, namely the side of the first side plate 13 facing the combustion cap 20 and the side of the second side plate 14 facing the combustion cap 20, is arranged in such a way that the air intake flow of the third air intake channel 108 on both sides of the burner body 10 along its length is reduced accordingly, and the combustion flame of the third flame hole 105 on both sides of the burner body 10 along its length is also relatively lower. Therefore, when the burner 100 is burning, the central flame is relatively higher than the flames on both sides, making the combustion of the burner 100 more stable.
[0064] Furthermore, in this invention, the length of the air intake channels on both sides of the burner body 10 along its length can be appropriately extended, thereby increasing the air intake resistance of the air intake channels on both sides of the burner body 10 along its length, and reducing the height of the combustion flame on both sides of the burner body 10 along its length. (See reference...) Figure 8 , Figure 9 As shown, optionally, the baffle 22 extends from the end of the baffle 22 away from the combustion port 102 on both sides near the length direction of the burner body 10.
[0065] It is understandable that when the baffle 22 extends toward the end of the baffle 22 away from the combustion port 102, the baffle 22 will correspondingly become longer in the height direction of the burner body 10. Since the first air intake channel 107 is formed by the baffle 22 and the periphery of the cover 21, and the third air intake channel 108 is formed by the baffle 22 and the inner wall of the cavity 101, when the baffle 22 becomes longer in the height direction of the burner body 10, the channel lengths of the first air intake channel 107 and the second air intake channel 106 will also become longer accordingly. The second air intake channel 106 is formed by the two baffles 221 that make up the baffle 22, so the channel length of the second air intake channel 106 will also become longer accordingly. This can make the lengths of the air intake channels on both sides of the length direction of the burner body 10 longer, thereby increasing the air intake resistance of the flame holes on both sides of the length direction of the burner body 10, further reducing the height of the combustion flame on both sides of the length direction of the burner body 10, and maintaining the combustion stability of the burner 100. Specifically, the dimension of the baffle 22 along the depth direction of the second air intake channel 106 is defined as L, where L is not greater than 9 mm and not less than 5 mm. The dimension L of the baffle 22 near the sides of the burner body 10 along its length can be set to 9 mm or 8 mm, and the dimension L of the baffle 22 near the center of the burner body 10 along its length can be set to 5 mm or 6 mm, subject to specific limitations.
[0066] Optionally, the partition 22 and the cover 21 are integrally formed. When the partition 22 and the cover 21 are integrally formed, the assembly difficulty of the combustion cover 20 on the burner body 10 can be reduced. Alternatively, the partition 22 and the cover 21 can be assembled. When the partition 22 and the cover 21 are assembled, they can be manufactured separately and assembled using methods such as snap-fit, riveting, plugging, and threaded connection. This design can reduce the difficulty of product manufacturing and reduce manufacturing costs.
[0067] This utility model also proposes a gas water heater, which includes a burner. The specific structure of the burner is as described in the above embodiments. Since this gas water heater adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here. The burner can be a low-load burner. By reducing the combustion flame height, the overall size of the gas water heater can be made lower, thus meeting the needs of low-capacity gas water heaters.
[0068] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A burner, characterized in that, include: A burner body, the burner body having a cavity and a combustion port communicating with the cavity; as well as A combustion cover is provided on the combustion port and extends toward the cavity. The combustion cover has a first flame hole and a second flame hole along its width direction. The combustion cover and the combustion port enclose a third flame hole. The first flame hole, the second flame hole and the third flame hole are distributed at intervals along the width direction of the burner body and communicate with the cavity.
2. The burner as claimed in claim 1, characterized in that, The second flame hole is divided into a first flame stabilizing section, a middle section and a second flame stabilizing section along the length of the flame plate body. The width of the first flame stabilizing section and the second flame stabilizing section is not greater than the width of the middle section.
3. The burner as described in claim 2, characterized in that, The first flame stabilizing section is gradually tapered from the middle section toward the first flame stabilizing section, and the second flame stabilizing section is gradually tapered from the middle section toward the first flame stabilizing section.
4. The burner as claimed in claim 1, characterized in that, The combustion cover includes a cover body and a partition. The partition is located on one side of the cover body in the width direction. One side of the partition and the cover body enclose the first flame hole. The other side of the partition and the combustion port enclose the third flame hole. The partition is provided with a second flame hole, which is located between the first flame hole and the third flame hole.
5. The burner as described in claim 4, characterized in that, The partition includes two partitions, which enclose a second flame hole and a second air intake channel communicating with the second flame hole. The second flame hole is connected to the cavity through the second air intake channel. One of the partitions surrounds the periphery of the cover to form the first flame hole and a first air intake channel communicating with the first flame hole. The first flame hole communicates with the cavity through the first air intake channel. Another partition surrounds the inner wall of the cavity to form a third air intake channel and surrounds the combustion port to form the third flame hole. The third flame hole communicates with the cavity through the third air intake channel.
6. The burner as described in claim 5, characterized in that, The firebox body has a first side plate and a second side plate arranged opposite to each other along the width direction. The first side plate and the second side plate enclose the cavity and the combustion port. The cover has a first cover plate and a second cover plate arranged opposite to each other along the width direction. A partition is provided between the first side plate and the first cover plate. The first side plate, the first cover plate and the partition are combined to form a plurality of first combustion units. The plurality of first combustion units are distributed at intervals along the length direction of the burner body. Each first combustion unit includes a first flame hole and a first air intake channel, a second flame hole and a second air intake channel, and a third flame hole and a third air intake channel. Another partition is provided between the second side plate and the second cover plate. The second side plate, the second cover plate and the other partition cooperate to form a plurality of second combustion units. The plurality of second combustion units are distributed at intervals along the length direction of the burner body. Each second combustion unit includes a first flame hole and a first air intake channel, a second flame hole and a second air intake channel, and a third flame hole and a third air intake channel.
7. The burner as claimed in claim 6, characterized in that, The baffle extends from both sides of the burner body along its length toward the end of the baffle furthest from the combustion port.
8. The burner as claimed in claim 6, characterized in that, The dimension of the partition along the depth direction of the second air intake channel is defined as L, where L is not greater than 9 mm and not less than 5 mm.
9. The burner as described in any one of claims 4 to 8, characterized in that, The partition is integrally formed with the cover, or the partition is assembled with the cover.
10. A gas water heater, characterized in that, Includes the burner as described in any one of claims 1 to 9.