A burner, a burner device and a gas water heater

Abstract

The application belongs to the technical field of gas water heaters, and discloses a burner, a burner device and a gas water heater, wherein the burner comprises a burner shell, a flow uniformizing plate and a fire grate, the burner shell is provided with a premix flow channel, and the top of the burner shell is provided with a turned-up edge; the flow uniformizing plate is provided with flow uniformizing holes, and the fire grate is provided with fire holes; the flow uniformizing plate and the fire grate are both fixed to the turned-up edge and located above the premix flow channel, and the fire grate is located above the flow uniformizing plate; the top of the burner shell is provided with the turned-up edge, so that the flow uniformizing plate and the fire grate can be installed on the turned-up edge, the structure of the burner shell can be simplified, the processing and assembly are facilitated, the assembly efficiency is improved, the components of the burner are reasonably arranged, the overall structure is more compact, and the size is smaller. The burner device and the gas water heater are applied with the burner, so that the components can be reasonably arranged, the size of the burner device is smaller, and the burner device can be applied to occasions with smaller installation space.

Description

Technical Field

[0001] This application relates to the field of gas water heater technology, specifically to a burner, burner device and gas water heater. Background Technology

[0002] A gas water heater is a gas appliance that uses gas as fuel to produce hot water through combustion. A gas water heater mainly consists of a burner, a heat exchanger, a gas supply device, and a water supply device. On one hand, the gas supply device provides air and gas to the burner. When the air and gas mix and burn within the burner, they heat the heat exchanger. On the other hand, the water supply device supplies cold water into the heat exchanger and then supplies the heated water to the water system to meet user needs.

[0003] Most burners in related technologies consist of a burner shell, a flow equalization plate, and a burner vent. The flow equalization plate and the burner vent are both fixed to the burner shell. This requires designing separate installation spaces for the flow equalization plate and the burner vent on the burner shell. This not only makes the structure of the burner shell more complex, inconvenient to process and assemble, and inefficient to assemble, but also makes the size of the burner shell larger. As a result, the burner occupies a large space, which in turn makes the gas water heater larger and unsuitable for occasions with limited installation space.

[0004] This section provides background information related to this application, which is not necessarily prior art. Utility Model Content

[0005] The purpose of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this application is to provide a burner, burner device, and gas water heater that optimizes the burner structure, making the burner more compact, smaller in size, easier to assemble, and improving assembly efficiency.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] In a first aspect, this application provides a burner, comprising:

[0008] The burner housing has a premixing channel inside, and the top of the burner housing has a flange;

[0009] A flow equalization plate is fixed to the flange and located above the premixed flow channel. The flow equalization plate has a number of spaced flow equalization holes.

[0010] A fire bar is fixed to the flange and located above the flow equalization plate. The fire bar has a number of fire holes arranged at intervals, and the area of ​​a single flow equalization hole is larger than the area of ​​a single fire hole.

[0011] As an optional embodiment of the burner, the burner includes an opening portion and a fixing portion surrounding the opening portion. The opening portion protrudes away from the flow equalization plate relative to the fixing portion. The opening portion is provided with the flame hole, and the fixing portion is used for fixed connection with the flange.

[0012] As an optional embodiment of the burner, the flow equalization plate is flat, and the distance between the opening and the flow equalization plate increases and then decreases from the front side to the rear side of the flow equalization plate.

[0013] As an alternative to the burner, the surface of the opening portion away from the flow equalization plate is provided with a protrusion, and the flame hole is opened on the protrusion.

[0014] As an alternative to the burner, the diameter of the flame hole gradually decreases from the end near the flow equalization plate to the end away from the flow equalization plate.

[0015] As an optional solution for the burner, a first fixing hole is provided on the flange, a second fixing hole is provided on the flow equalization plate and connected to the first fixing hole, and a third fixing hole is provided on the fixing part and connected to the second fixing hole. Fasteners are used to pass through the third fixing hole, the second fixing hole and the first fixing hole in sequence to fix the flow equalization plate and the burner to the flange.

[0016] As an optional solution for the burner, there are multiple first fixing holes, and the number of second fixing holes and the number of third fixing holes are the same as the number of first fixing holes, and the three are set in a one-to-one correspondence; some of the multiple first fixing holes are flanged holes, and the flanged holes extend in a direction away from the flow equalization plate.

[0017] As an optional embodiment of the burner, the burner further includes guide vanes, a plurality of which are fixed inside the burner housing and form a premixed flow channel with an S-shaped flow path inside the burner housing.

[0018] Secondly, this application provides a burner device, including a housing and a burner as described above, wherein the burner is fixed inside the housing and the internal space of the housing is divided into an upper cavity and a lower cavity arranged vertically, the upper cavity forming a combustion chamber and the lower cavity forming an air buffer chamber.

[0019] Thirdly, this application provides a gas water heater, including a fan, a gas proportional valve, and a burner device as described above, wherein the fan is used to supply air to the burner device, and the gas proportional valve is configured to be connected to a gas pipeline and used to supply gas to the burner device.

[0020] The beneficial effects of this application are as follows:

[0021] The burner provided in this application includes a burner shell, a flow equalization plate, and a burner baffle. The burner shell has a premixing channel inside and a flange on the top of the burner shell. The flow equalization plate has flow equalization holes, and the burner baffle has flame holes. The flow equalization plate and the burner baffle are both fixed to the flange and located above the premixing channel. The burner baffle is located above the flow equalization plate. By providing a flange on the top of the burner shell, it is convenient to install the flow equalization plate and the burner baffle on the flange, which simplifies the structure of the burner shell, facilitates processing and assembly, improves assembly efficiency, and allows for a reasonable layout of the burner components, resulting in a more compact overall structure and smaller size.

[0022] The burner device provided in this application allows for a more rational layout of the components, resulting in a smaller burner device size.

[0023] The gas water heater provided in this application, by applying the above-mentioned burner device, makes the overall size of the gas water heater smaller, and can be used in occasions with limited installation space. Attached Figure Description

[0024] Figure 1 This is a structural diagram of a gas water heater with the front of the casing hidden, provided in an embodiment of this application.

[0025] Figure 2 This is a longitudinal sectional view of the burner device provided in the embodiments of this application.

[0026] Figure 3 This is a longitudinal sectional view of the burner provided in the embodiment of this application.

[0027] Figure 4 This is an exploded view of an example burner provided in an embodiment of this application.

[0028] Figure 5 This is an exploded view of a burner, which is another example provided in the embodiments of this application.

[0029] Figure 6 This is an exploded view of another example burner provided in the embodiments of this application.

[0030] In the picture:

[0031] 100. Housing; 200. Burner assembly; 201. Outer casing; 2011. Air buffer chamber; 2012. Combustion chamber; 2013. Air supply interface; 202. Burner; 203. Gas distributor; 2031. Gas distribution inlet; 2032. Gas distribution outlet; 204. Ignition assembly; 300. Heat exchanger; 400. Fan; 500. Gas proportional valve; 601. Water inlet connector; 602. Water inlet pipe; 603. Water outlet connector; 604. Water outlet pipe; 605. Water flow servo; 700. Gas inlet connector; 800. Control system; 801. Main control board; 802. Electrical components; 901. Smoke hood; 902. Exhaust pipe;

[0032] 1. Burner housing; 10. Premixed flow channel; 101. Air premixed inlet; 102. Gas premixed inlet; 11. Flanged edge; 111. First fixing hole; 12. Receiving groove;

[0033] 2. Deflector plate;

[0034] 3. Flow equalization plate; 31. Flow equalization hole; 32. Second fixing hole;

[0035] 4. Flame rack; 40a. First flame hole; 40b. Second flame hole; 40c. Third flame hole; 41. Opening portion; 411. Protrusion; 42. Fixing portion; 421. Third fixing hole;

[0036] 5. Partition. Detailed Implementation

[0037] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0038] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or 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 application according to the specific circumstances.

[0039] In the description of this application, unless otherwise expressly 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 being 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 being 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.

[0040] The technical solution of this application will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] like Figures 1 to 2 As shown, this application provides a gas water heater, a gas appliance that uses gas as fuel and produces hot water through combustion heating.

[0042] For ease of description, Figure 1 and Figure 2 The location of the gas water heater is for reference. Figure 1 and Figure 2 The vertical direction of the gas water heater is indicated by its height. Figure 1 The left and right sides refer to the left and right sides of the gas water heater. Figure 1 The side shown in the image is the front of the gas water heater (for reference). Figure 2 The front side of the gas water heater is opposite the front side (see reference). Figure 2 (After). It should be noted that this orientation definition is mainly for the convenience of describing the technical solution of this application and should not be used as a limitation on the technical solution of this application.

[0043] Continue as Figure 1As shown, the gas water heater provided in this application includes a casing 100, a burner device 200, a heat exchanger 300, a fan 400, and a gas proportional valve 500. The casing 100 has a receiving cavity, within which the burner device 200, heat exchanger 300, fan 400, and gas proportional valve 500 are all installed. The burner device 200 has an air supply interface 2013 and a gas supply interface. The heat exchanger 300 is located above the burner device 200. The fan 400 and gas proportional valve 500 are arranged side-by-side in a left-right direction and located below the burner device 200. The air outlet of the fan 400 is connected to the air supply interface 2013. The gas proportional valve 500 is configured to be connected to a gas pipeline and is also connected to the gas supply interface. This arrangement fully utilizes the internal space of the receiving cavity, improving space utilization and making the gas water heater more compact and smaller in size, reducing space occupation and making it suitable for smaller installation spaces.

[0044] The working principle of this gas water heater is roughly as follows: the fan 400 supplies air to the burner unit 200, and the gas in the gas pipeline enters the burner unit 200 through the gas proportional valve 500. After the gas mixes with the air, it is ignited and burned. The flame of the combustion heats the heat exchanger 300, so that the cold water in the heat exchanger 300 reaches the required temperature to meet the user's water demand. In other words, the fan 400 and the gas proportional valve 500 constitute the gas supply device in the relevant technology.

[0045] In addition, the gas water heater also includes an inlet connector 601 and an outlet connector 603. The inlet connector 601 is fixed to the bottom wall of the casing 100 and is connected to the inlet of the heat exchanger 300 via an inlet pipe 602. The outlet connector 603 is fixed to the bottom wall of the casing 100 and is connected to the outlet of the heat exchanger 300 via an outlet pipe 604. The outlet pipe 604 and the inlet pipe 602 are located on the left and right sides of the heat exchanger 300, respectively, to make full use of the housing space of the casing 100.

[0046] In some embodiments, the gas water heater also includes a water flow server 605, which precisely controls the amount of water flowing to the heat exchanger 300 to solve the problem of fluctuating water temperature in the gas water heater.

[0047] Furthermore, the gas water heater also includes a gas inlet connector 700, which is fixed to the bottom wall of the casing 100 and used to connect to the gas proportional valve 500, located between the water inlet connector 601 and the water outlet connector 603. This arrangement not only makes full use of the bottom wall space of the casing 100, but also shortens the distance between the gas inlet connector 700 and the gas proportional valve 500, reducing the length of the connecting pipe between them, thus reducing material costs and the space occupied by the connecting pipe within the housing cavity.

[0048] In some embodiments, the gas water heater further includes a control system 800, which includes a main control board 801 and electrical components 802. The main control board 801 is fixed in the housing cavity and located on the side of the heat exchanger 300 adjacent to the inlet pipe 602. The electrical components 802 are fixed to the surface of the main control board 801 away from the heat exchanger 300. This orientation arrangement, on the one hand, makes full use of the housing cavity space of the casing 100, and on the other hand, by placing the main control board 801 near the lower-temperature inlet pipe 602, it not only keeps away from the higher-temperature outlet pipe 604, reducing the impact of the water temperature in the outlet pipe 604 on the main control board 801, but also allows the cold water in the inlet pipe 602 to generate a certain amount of cold radiation to the main control board 801. When the temperature of the main control board 801 is high, the heat of the main control board 801 will be transferred and radiated in the direction of the inlet pipe 602, which is beneficial to the heat dissipation of the main control board 801.

[0049] Furthermore, the main control board 801 is fixed to the upper right of the receiving cavity. The height of the main control board 801 is greater than the height of the heat exchanger 300. The main control board 801 is located on the right side of the heat exchanger 300 and extends to a position opposite to the burner device 200. That is, the main control board 801 is arranged around the heat exchanger 300 and the burner device 200.

[0050] To exhaust the exhaust gases produced by gas combustion, the gas water heater also includes a smoke hood 901 and a smoke exhaust pipe 902. The smoke exhaust pipe 902 is used to connect the public exhaust system pipe and the smoke hood 901. The smoke hood 901 is located above the heat exchanger 300 and is used to collect the exhaust gases to ensure that all exhaust gases can be discharged from the smoke exhaust pipe 902 to the public exhaust system pipe, reducing or even avoiding smoke leakage problems and improving the user experience.

[0051] It is worth noting that the heat exchanger 300, fan 400, gas proportional valve 500 and water flow servo 605 in this application can all be existing conventional products, and will not be described in detail here.

[0052] In addition to the aforementioned rational arrangement of the various components, the structure of the burner device 200 can be optimized to make it more compact and smaller, thereby achieving a smaller overall size for the gas water heater and meeting market demands for smaller installation spaces. The specific structure of the burner device 200 will be described below.

[0053] like Figures 2 to 4As shown, the burner device 200 includes a housing 201, a burner 202, and a gas distributor 203, wherein both the burner 202 and the gas distributor 203 are mounted on the housing 201. The bottom of the housing 201 has an air supply interface 2013. The burner 202 is fixed inside the housing 201, dividing the internal space of the housing 201 into an upper cavity and a lower cavity. The upper cavity forms a combustion chamber 2012, and the lower cavity forms an air buffer cavity 2011, which is connected to the air supply interface 2013. This design directly forms the air supply interface 2013 at the bottom of the housing 201 and the air buffer cavity 2011 and combustion chamber 2012 within the housing 201. The housing 201 can also serve as the mounting base for the burner 202, thus making the overall structure of the burner device 200 more compact and smaller in size.

[0054] The gas distributor 203 has a gas distribution inlet 2031 and a gas distribution outlet 2032. The gas distribution outlet 2032 is connected to the gas premixing inlet 102, and the gas distribution inlet 2031 forms a gas supply interface and is connected to the gas proportional valve 500. When gas is needed, the gas proportional valve 500 is opened, and the gas in the gas pipeline enters the gas distributor 203 through the gas proportional valve 500, the gas distribution inlet 2031, and then enters the premixing channel 10 through the gas distribution outlet 2032 and the gas premixing inlet 102.

[0055] The burner 202 includes a burner housing 1 and baffles 2. Several baffles 2 are fixed inside the burner housing 1 and form an S-shaped premixing channel 10 with a flow path. The S-shaped premixing channel 10 can construct a premixing channel 10 with a relatively small height space, thereby reducing the size of the burner housing 1 in the height direction to a certain extent, making the structure of the burner 202 more compact and smaller in size.

[0056] Furthermore, the premixed flow channel 10 has an air premixing inlet 101 and a gas premixing inlet 102. Air enters the premixed flow channel 10 through the air premixing inlet 101, and gas enters the premixed flow channel 10 through the gas premixing inlet 102. The air and gas are fully mixed within the S-shaped premixed flow channel 10 to improve the combustion efficiency of the gas, reduce the generation of carbon monoxide and nitrogen monoxide, and ensure complete combustion of the gas. The premixed flow channel 10 is S-shaped, with the air premixing inlet 101 located at the bottom of the burner 202 and at the beginning of the premixed flow channel 10; the gas premixing inlet 102 is located downstream of the air premixing inlet 101 and at the bend of the premixed flow channel 10. This arrangement ensures that the gas and air can enter the latter half of the premixed flow channel 10 precisely in the required ratio and be fully mixed within the premixed flow channel 10, ensuring combustion efficiency and combustion quality.

[0057] The air premixing inlet 101 is connected to the air buffer chamber 2011, which is connected to the air supply interface 2013. The fan 400 is connected to the air supply interface 2013. When air needs to be supplied, the fan 400 starts, supplying air from the outside environment into the air buffer chamber 2011. The air in the air buffer chamber 2011 then enters the premixing channel 10 through the air premixing inlet 101.

[0058] The burner housing 1 has a receiving groove 12 on its front side, and the outer casing 201 has a clearance slot corresponding to the receiving groove 12 on its front side. The gas distributor 203 is fixed to the outer casing 201 and covers the clearance slot, with a portion of the gas distributor 203 located within the receiving groove 12. This arrangement makes the overall structure of the burner device 200 more compact, smaller, and more regular, thereby improving the space utilization of the housing 100's receiving cavity.

[0059] Furthermore, compared to installing the gas distributor 203 below the burner 202, this layout can reduce the overall height dimension of the burner device 200. After the gas distributor 203 is installed on the burner 202, the outer surface of the gas distributor 203 is roughly flush with the outer surface of the outer casing 201, which makes it easier to install the entire burner device 200 in the receiving cavity of the housing 100. At the same time, it is beneficial to make the appearance of the gas water heater flat, which makes it easier to install the gas water heater on a flat wall or flat cabinet.

[0060] The burner device 200 also includes an ignition assembly 204, which is fixed to the housing 201, with a portion of the ignition assembly 204 located within the combustion chamber 2012. The ignition assembly 204 is used to ignite the gas entering the combustion chamber 2012. It is worth noting that the ignition assembly 204 can be a conventional ignition product, which will not be elaborated further here.

[0061] Continue as Figures 3 to 4 As shown, the burner 202 also includes a flow equalization plate 3 and a flame bar 4. The top of the burner housing 1 has a flange 11. The flow equalization plate 3 and the flame bar 4 are both fixed to the flange 11. The flow equalization plate 3 is located above the premixing channel 10, and the flame bar 4 is located above the flow equalization plate 3. The flow equalization plate 3 has flow equalization holes 31, and the flame bar 4 has flame holes. The area of ​​a single flow equalization hole 31 is larger than the area of ​​a single flame hole.

[0062] The burner 202 provided in this application has a flange 11 on the top of the burner housing 1, which facilitates the installation of the flow equalization plate 3 and the fire row 4 on the flange 11. This simplifies the structure of the burner housing 1 and makes the various components of the burner 202 more reasonably arranged, resulting in a more compact overall structure and smaller size.

[0063] In some embodiments, the flange 11 extends toward the interior of the burner housing 1, which can utilize the space inside the burner housing 1 and help reduce the external dimensions of the burner housing 1. In addition, the flow equalization plate 3 is flat, with its lower surface abutting the flange 11 and its upper surface abutting the fixing part 42, making the burner 202 smaller in the height direction.

[0064] In some embodiments, the burner 4 includes an opening 41 and a fixing part 42 surrounding the opening 41. The opening 41 protrudes away from the flow equalization plate 3 relative to the fixing part 42. The opening 41 is provided with a flame hole, and the fixing part 42 is used to fix it to the flange 11. This arrangement not only facilitates fixing the fixing part 42 of the burner 4 to the flow equalization plate 3 and the flange 11, but also allows for a spaced arrangement between the opening 41 and the flow equalization plate 3, which facilitates the flow of the mixed gas.

[0065] As the gas and air mixture flows out of the premixed channel 10, it preferentially concentrates at the middle position of the flow equalization plate 3 in the front-to-back direction, making the gas mixture more concentrated there. To ensure that the gas mixture in different areas can flow smoothly out of the flow equalization orifice 31 and the burner orifice, the distance between the opening 41 and the flow equalization plate 3 increases and then decreases from the front side to the rear side of the burner housing 1. In other words, the distance between the opening 41 and the flow equalization plate 3 is the largest at the middle position in the front-to-back direction, which can better accommodate the large amount of gas and air mixture flowing out there. For example, the opening 41 is approximately arc-shaped.

[0066] A first fixing hole 111 is provided on the flange 11, a second fixing hole 32 communicating with the first fixing hole 111 is provided on the flow equalization plate 3, and a third fixing hole 421 communicating with the second fixing hole 32 is provided on the fixing part 42. Fasteners are used to sequentially pass through the third fixing hole 421, the second fixing hole 32, and the first fixing hole 111 to fix the flow equalization plate 3 and the burner 4 to the flange 11. Only one fixing structure is needed to fix the flow equalization plate 3 and the burner 4 to the flange 11 of the burner housing 1, simplifying the assembly operation and increasing assembly efficiency. For example, the fasteners can be solid rivets or blind rivets.

[0067] In some embodiments, there are multiple first fixing holes 111, and the number of second fixing holes 32 and third fixing holes 421 are the same as the number of first fixing holes 111, and the three are arranged in a one-to-one correspondence; some of the multiple first fixing holes 111 are flanged holes, and the flanged holes extend in the direction away from the flow equalization plate 3.

[0068] In some embodiments, the burner 202 may also include a baffle 5 or not, for example in Figure 4In the example shown, the burner 202 includes a baffle 5 installed inside the burner housing 1 to divide the premixing channel 10 into two sub-channels, denoted as the left sub-channel and the right sub-channel, respectively. For example, in... Figure 5 In the example shown, the burner 202 may not include the baffles 5, meaning the premixing channel 10 is a single, integral channel. Alternatively, in other embodiments, the number of baffles 5 may be at least two, with at least two baffles 5 spaced apart in the left-right direction to divide the premixing channel 10 into at least three sub-channels. The number of baffles 5 may be three, four, five, six, etc., without limitation.

[0069] This application provides three types of 4-burner structures, the first type of 4-burner structure is as follows: Figure 4 As shown, the burner 4 includes an opening portion 41 and a fixing portion 42 surrounding the opening portion 41. The opening portion 41 protrudes away from the flow equalization plate 3 relative to the fixing portion 42, and a plurality of regularly arranged first flame holes 40a are formed on the opening portion 41. The fixing portion 42 is used for fixed connection with the burner housing 1. The diameter of the first flame holes 40a is smaller than the quenching diameter of the gas, which can effectively prevent backfire.

[0070] The second type of firebox 4 structure is as follows: Figure 5 As shown, the burner 4 includes an opening 41 and a fixing part 42 surrounding the opening 41. The opening 41 protrudes away from the flow equalization plate 3 relative to the fixing part 42, and the opening 41 has a plurality of regularly arranged protrusions 411. The protrusions 411 have second flame holes 40b that connect to the premixed flow channel 10. The protrusions 411 not only guide the mixed airflow, but also lengthen the distance between the flame above the protrusions 411 and the mixed airflow below the burner 4. When the speed of the mixed airflow decreases, the lengthened distance can effectively prevent backfire, enabling the burner 202 to work stably even under low load conditions, widening the water temperature adjustment range, and meeting the user's needs for a wider temperature range and more precise water temperature control.

[0071] Furthermore, the diameter of the second flame hole 40b gradually decreases from the direction of the fire row 4 to the direction away from the fire row 4. In other words, the diameter at the inlet of the second flame hole 40b is larger than its outlet diameter, which facilitates the rapid entry of airflow into the second flame hole 40b from the inlet and its accelerated discharge at the outlet under the conical guidance of the second flame hole 40b. This results in the airflow velocity being greater than the flame combustion velocity, which not only plays an important role in stabilizing the flame but also prevents backfire.

[0072] In some embodiments, the diameter of the outlet of the second flame hole 40b is 0.5 mm, and the diameter of the inlet of the second flame hole 40b is 0.55 mm. This structure helps to accelerate the flow of gas.

[0073] Furthermore, the protrusion 411 is frustum-shaped, and the diameter of the protrusion 411 gradually decreases from the direction where the fire row 4 is located to the direction away from the fire row 4.

[0074] The third type of firebox 4 structure is as follows: Figure 6 As shown, the flame arrester 4 includes an opening portion 41 and a fixing portion 42 surrounding the opening portion 41. The opening portion 41 protrudes away from the fixing portion 42 in a direction away from the flow equalization plate 3, and the opening portion 41 has a plurality of regularly arranged protrusions 411. The protrusions 411 have second flame holes 40b that connect to the premixing channel 10. In the left-right direction, a third flame hole 40c is provided between two adjacent second flame holes 40b. A blocking member is provided above the third flame hole 40c, which is equivalent to the blocking member and the third flame hole 40c forming a bridge-shaped hole.

[0075] Obviously, the above embodiments of this application are merely examples for clear illustration and are not intended to limit the implementation of this application. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A burner, characterized in that, include: The burner housing (1) has a premixing channel (10) inside, and the top of the burner housing (1) has a flange (11). A flow equalization plate (3) is fixed to the flange (11) and located above the premixed flow channel (10). The flow equalization plate (3) has a plurality of spaced flow equalization holes (31). The fire bar (4) is fixed to the flange (11) and located above the flow equalization plate (3). The fire bar (4) has several fire holes arranged at intervals.

2. The burner according to claim 1, characterized in that, The fire bar (4) includes an opening (41) and a fixing part (42) surrounding the opening (41). The opening (41) protrudes away from the flow equalization plate (3) relative to the fixing part (42). The opening (41) is provided with the fire hole. The fixing part (42) is used to fix and connect with the flange (11).

3. The burner according to claim 2, characterized in that, The flow equalization plate (3) is flat, and the distance between the opening (41) and the flow equalization plate (3) increases and then decreases from the front side to the rear side of the flow equalization plate (3).

4. The burner according to claim 3, characterized in that, The surface of the opening (41) away from the flow equalization plate (3) is provided with a protrusion (411), and the fire hole is opened on the protrusion (411).

5. The burner according to claim 4, characterized in that, The diameter of the fire hole gradually decreases from the end near the flow equalization plate (3) to the end away from the flow equalization plate (3).

6. The burner according to any one of claims 2-5, characterized in that, The flange (11) is provided with a first fixing hole (111), the flow equalization plate (3) is provided with a second fixing hole (32) communicating with the first fixing hole (111), and the fixing part (42) is provided with a third fixing hole (421) communicating with the second fixing hole (32). Fasteners are used to pass through the third fixing hole (421), the second fixing hole (32) and the first fixing hole (111) in sequence to fix the flow equalization plate (3) and the fire row (4) to the flange (11).

7. The burner according to claim 6, characterized in that, The number of the first fixing holes (111) is multiple, the number of the second fixing holes (32) and the number of the third fixing holes (421) are the same as the number of the first fixing holes (111), and the three are set in a one-to-one correspondence; some of the first fixing holes (111) are flanged holes, and the flanged holes extend in a direction away from the flow equalization plate (3).

8. The burner according to claim 6, characterized in that, The burner also includes a guide plate (2), and several of the guide plates (2) are fixed inside the burner housing (1) and form a premixed flow channel (10) with an S-shaped flow path inside the burner housing (1).

9. A burner device, characterized in that, The device includes a housing (201) and a burner as described in any one of claims 1-8, wherein the burner is fixed inside the housing (201) and the internal space of the housing (201) is divided into an upper cavity and a lower cavity arranged vertically, wherein the upper cavity forms a combustion chamber (2012) and the lower cavity forms an air buffer chamber (2011).

10. A gas water heater, characterized in that, The device includes a blower (400), a gas proportional valve (500), and a burner assembly as claimed in claim 9, wherein the blower (400) is used to supply air to the burner assembly, and the gas proportional valve (500) is configured to be connected to a gas pipeline and used to supply gas to the burner assembly.

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