Fire grate, burner and gas water heating device

Abstract

The utility model discloses a fire grate, a burner and a gas water heating device, the fire grate comprises a fire grate main body, a flow channel used for circulating combustion gas is formed in the fire grate main body, and the fire grate main body is provided with a gas inlet and an outlet which are communicated with the flow channel; the outlets comprise a first group of outlets positioned on the upper end surface of the fire grate main body and a second group of outlets positioned on the side wall of the fire grate main body; the first group of outlets are arranged at intervals in the length direction of the fire grate to form a plurality of outlet combination units, and a spacing part is arranged between every two adjacent outlet combination units; the guiding shell is arranged outside the side wall of the fire grate body and right faces the second set of outlets, the guiding shell is provided with an upper end and a lower end in the height direction, a fire transferring component is arranged at the upper end of the guiding shell or the position close to the upper end, and the fire transferring component corresponds to the interval part and is used for transferring flames between the guiding shell and the fire grate body to the adjacent fire grates. The combustion sufficiency is not affected, meanwhile, the fire transfer performance is improved, and the low-noise combustor is well applied to a low-noise combustion system.

Description

Technical Field

[0001] The utility model relates to the technical field of gas combustion, in particular to a fire grate, a burner and a gas water heater. Background Art

[0002] The burner is the core component of the combustion system of gas water heaters, gas wall-mounted boilers, etc. Its combustion characteristics such as ignition, flame transfer performance, combustion completeness, and stability play a vital role in the performance of the entire combustion system.

[0003] Among them, for low-noise combustion systems, how to ensure sufficient combustion and low-speed operation has always been a relatively challenging problem.

[0004] Therefore, it is necessary to provide a fire grate, a burner and a gas water heater to solve at least one of the above problems. Utility Model Content

[0005] In response to the defects of the existing technology, the embodiments of the present invention provide a fire grate, a burner and a gas water heater, which can improve the fire transfer performance without affecting the completeness of combustion and are preferably used in a low-noise combustion system.

[0006] The specific technical solution of the embodiment of the utility model is:

[0007] A fire grate, the fire grate comprising: a fire grate main body, a flow channel for circulating combustion gases formed in the fire grate main body, an air inlet and an outlet connected to the flow channel being provided on the fire grate main body, the outlet comprising a first group of outlets located on the upper end face of the fire grate main body and a second group of outlets located on the side wall of the fire grate main body; the first group of outlets are arranged in a predetermined manner along the length direction of the fire grate to form a plurality of outlet combination units, a partition is provided between two adjacent outlet combination units, a guide shell, the guide shell is provided outside the side wall of the fire grate main body and facing the second group of outlets, in the height direction, the guide shell has an upper end and a lower end, a fire transfer component is provided at the upper end of the guide shell or near the upper end, the fire transfer component is provided corresponding to the partition, and is used to transfer the flame between the guide shell and the fire grate main body to the adjacent fire grate.

[0008] In a preferred embodiment, the guide shell includes a shell having a predetermined wall thickness, and the fire transmission component extends from the shell in a direction away from the fire bar main body.

[0009] In a preferred embodiment, the fire transmission component is a sheet-like structure integrally formed with the housing.

[0010] In a preferred embodiment, the fire transfer component includes: a transition portion connected to the shell and a fire transfer main body connected to the transition portion.

[0011] In a preferred embodiment, the fire transmission main body is arranged horizontally as a whole.

[0012] In a preferred embodiment, the upper end of the guide shell is higher than the first group of outlets, and the fire transmission component is flush with or lower than the first group of outlets.

[0013] In a preferred embodiment, the fire transmission component is lower than the first group of outlets, and the height difference between the fire transmission component and the first group of outlets is within 2 mm.

[0014] In a preferred embodiment, the guide shell is further provided with a guide structure at a position corresponding to the spacer, and the fire transmission component is provided at the guide structure.

[0015] In a preferred embodiment, along the length direction of the fire bar, the size of the guide structure is the same as or close to the size of the partition.

[0016] In a preferred embodiment, the guide structure is a groove formed at the upper end of the guide shell, the groove having two side edges connected to the upper end of the guide shell and a bottom edge arranged between the two side edges, and the fire transmission component is located on the bottom edge.

[0017] In a preferred embodiment, a first guide portion that is arranged obliquely is formed between the side edge and the upper end of the guide shell, and a second guide portion that is arranged obliquely is formed between the side edge and the bottom edge.

[0018] In a preferred embodiment, along the length direction of the fire bar, the bottom side size of the groove is more than twice the size of the fire transfer component.

[0019] In a preferred embodiment, the fire transmission component is arranged opposite to the partition.

[0020] In a preferred embodiment, in the length direction of the fire bar, the size of the partition is larger than the size of the fire transfer component.

[0021] In a preferred embodiment, in the height direction of the fire bar, the fire transmission component is arranged corresponding to the second group of outlets.

[0022] In a preferred embodiment, the lower end of the guide shell or a position close to the lower end is in contact with the side wall of the fire bar body, and a predetermined gap is formed between the guide shell and the side wall of the fire bar body above the contact position between the guide shell and the fire bar body.

[0023] In a preferred embodiment, along the length direction of the fire bar, the fire bar body has a front side and a rear side relative to each other, the air inlet is arranged close to the front side, and the fire transfer component is arranged close to the rear side.

[0024] In a preferred embodiment, there are a plurality of partitions along the length direction of the fire bar, and the fire transmission component is arranged at the partition closest to the rear side of the fire bar.

[0025] In a preferred embodiment, the guide shell includes a first side shell and a second side shell connected to each other, the fire transmission component includes a first fire transmission piece arranged on the first side shell, and a second fire transmission piece arranged on the second side shell, and the partition includes: a first partition closest to the rear side of the fire row, and at least one second partition spaced apart from the first partition; the first fire transmission piece and the second fire transmission piece are both correspondingly arranged at the first partition; the guide shell also includes at least one connecting part, the connecting part is located at the top end of the guide shell and is used to connect the first side shell and the second side shell, and the connecting part is located above the second partition.

[0026] In a preferred embodiment, a notch is further provided on the fire bar body, and the notch is provided on the front side of the fire bar body and away from the upper end surface of the fire bar body; the notch has a vertical side extending along the height direction and a horizontal side extending along the length direction of the fire bar, and the air inlet is provided on the vertical side.

[0027] A burner comprises a plurality of fire bars as described above, wherein the plurality of fire bars are arranged at intervals along the thickness direction of the fire bar, and a predetermined distance is spaced between two adjacent fire bars to form a secondary air flow channel.

[0028] In a preferred embodiment, the burner also includes a supporting component for mounting the fire bar, and the supporting component includes: a primary air plate provided with a first opening, and a secondary air plate provided with a second opening, the first opening is arranged corresponding to the air inlet, and the second opening is connected to the secondary air flow duct.

[0029] In a preferred embodiment, a notch portion is further provided on the fire bar body, the notch portion having a vertical side portion extending along the height direction and a horizontal side portion extending along the length direction of the fire bar, and the primary air plate is arranged corresponding to the vertical side portion; the secondary air plate includes a first part arranged corresponding to the horizontal side portion of the notch portion and a second part arranged staggered with the notch portion, and the opening rate of the fire bar outlet corresponding to the first part is greater than the opening rate of the fire bar outlet corresponding to the second part.

[0030] In a preferred embodiment, a notch portion is further provided on the fire bar body, the notch portion has a vertical side portion extending along the height direction and a horizontal side portion extending along the length direction of the fire bar, and the primary air plate is arranged corresponding to the vertical side portion; the secondary air plate includes a first part arranged corresponding to the horizontal side portion of the notch portion and a second part arranged staggered with the notch portion, and the outlet combination unit includes a plurality of first burners arranged at intervals, and the number of first burners of the outlet combination unit corresponding to the first part is more than the number of first burners of the outlet combination unit corresponding to the second part.

[0031] In a preferred embodiment, a notch portion is further provided on the fire bar body, the notch portion has a vertical side portion extending along the height direction and a horizontal side portion extending along the length direction of the fire bar, and the primary air plate is arranged corresponding to the vertical side portion; the secondary air plate includes a first part arranged corresponding to the horizontal side portion of the notch portion and a second part arranged staggered with the notch portion, the outlet combination unit includes a plurality of first fire ports arranged at intervals, and no interval portion is arranged between the two outlet combination units corresponding to the first part.

[0032] In a preferred embodiment, the flow resistance in the secondary air flow channel corresponding to the first portion is smaller than the flow resistance in the secondary air flow channel corresponding to the second portion.

[0033] In a preferred embodiment, the second part of the secondary air plate is arranged horizontally as a whole, and the second part is provided with a first air inlet area, a stop area and a second air inlet area in sequence from the front side to the rear side along the length direction of the fire bar. The first air inlet area and the second air inlet area are respectively provided with air inlets, and the stop area is not provided with an air inlet or the opening rate of the air inlet of the stop area is smaller than the opening rate of the air inlet of the first air inlet area and the second air inlet area. The stop area is arranged corresponding to the fire transfer component in the height direction.

[0034] In a preferred embodiment, the projection of the stop area toward the flame transfer component can completely cover the flame transfer component.

[0035] In a preferred embodiment, the fire transfer components between two adjacent fire bars are overlapped or connected to form a fire transfer mechanism, and the projection of the stop area toward the fire transfer mechanism can completely cover the fire transfer mechanism.

[0036] A gas water heater, comprising: any one of the burners described above.

[0037] In a preferred embodiment, the gas water heater further includes a fan and a heat exchanger. The burner, heat exchanger and fan are arranged in sequence. There is a frame between the burner and the heat exchanger. The fan is an exhaust fan. After the fan is started, a negative pressure can be formed in the frame.

[0038] The technical solution of the utility model has the following significant beneficial effects:

[0039] In the embodiment of the present application, a fire transmission component is provided at the upper end of the guide shell or near its upper end. The fire transmission component is provided corresponding to the spacer portion of the fire bar body. By utilizing the fire transmission component, the flame between the guide shell and the fire bar body can be stably, reliably and efficiently transmitted to the adjacent fire bar. The overall fire transmission distance is short, the fire transmission path is cleverly arranged, the fire transmission success rate is high, and it will not affect the combustion performance of the fire bar body, which can better meet the user's requirements for low noise and low energy consumption.

[0040] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many variations, modifications, and equivalents. Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. Furthermore, the shapes and proportional dimensions of the components in the drawings are for illustrative purposes only and are intended to facilitate understanding of the present invention. They are not intended to limit the shapes and proportional dimensions of the components of the present invention. Those skilled in the art, guided by the present invention, may select various possible shapes and proportional dimensions to implement the present invention, depending on the specific circumstances.

[0042] Figure 1 A top view of a fire bar provided in the prior art;

[0043] Figure 2This is a schematic structural diagram of a fire grate provided in an embodiment of the present application;

[0044] Figure 3 This is a front view of a fire grate provided in an embodiment of the present application;

[0045] Figure 4 A top view of a fire bar provided in an embodiment of the present application;

[0046] Figure 5 This is one of the exploded views of a fire bar provided in an embodiment of the present application;

[0047] Figure 6 This is the second exploded view of a fire bar provided in an embodiment of the present application;

[0048] Figure 7 for Figure 5 A partial enlarged schematic diagram of point I in the middle;

[0049] Figure 8 This is a schematic structural diagram of a burner provided in an embodiment of the present application;

[0050] Figure 9 A top view of a burner provided in an embodiment of the present application;

[0051] Figure 10 This is a front view of a burner provided in an embodiment of the present application;

[0052] Figure 11 This is a schematic diagram of a support component of a burner provided in an embodiment of the present application.

[0053] Reference numerals of this application:

[0054] 100, fire row;

[0055] 1. Fire broiler body;

[0056] 101, air intake;

[0057] 110, upper end surface;

[0058] 111, the first set of exits;

[0059] 112, second set of exits;

[0060] 1131, first spacer;

[0061] 1132, second spacer;

[0062] 130, notch;

[0063] 131, horizontal edge;

[0064] 132, vertical edge;

[0065] 120, side wall;

[0066] 2. Boot shell;

[0067] 20. Fire transmission components;

[0068] 201, Transition Department;

[0069] 202, fire transmission body;

[0070] 21. First side shell;

[0071] 211, the first fire piece;

[0072] 22. Second side shell;

[0073] 221, the second fire piece;

[0074] 23. Connecting part;

[0075] 231, first connecting portion;

[0076] 232, second connecting portion;

[0077] 24. Guiding structure;

[0078] 240, bottom edge;

[0079] 241, first guide portion;

[0080] 242, second guide portion;

[0081] 200, support component;

[0082] 210, primary air plate;

[0083] 2101, first opening;

[0084] 220, secondary air plate;

[0085] 222, second opening;

[0086] 2201, first air inlet area;

[0087] 223, stop zone;

[0088] 224, second air inlet area;

[0089] 300, secondary air flow channel;

[0090] 400, fire transmission mechanism;

[0091] X, length direction;

[0092] Y, height direction;

[0093] Z, thickness direction;

[0094] A. Low resistance area;

[0095] B. High resistance area. DETAILED DESCRIPTION

[0096] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0097] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

[0098] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0099] like Figure 1 As shown, a typical existing burner includes multiple burner units (i.e., fire bars) assembled side by side. The fire bar generally includes: a fire bar body and a flame stabilizing plate 2. The flame stabilizing plate 2 is provided with a flame transfer plate 21 extending away from the center of the fire bar body. The flame transfer plate 21 can reduce the flame distance between adjacent fire bars, facilitating flame transfer between adjacent fire bars.

[0100] However, after conducting an in-depth study of the prior art, the inventors of this application discovered that the existing fire transfer piece 21 is disposed in correspondence with the fire hole 13a on the upper end surface of the fire bar body, and is used to transfer the flame above the fire hole 13a to the adjacent fire bar. However, when the fire transfer piece 21 is disposed in correspondence with the fire hole 13a, the fire transfer piece 21 blocks the secondary air flowing upward between the two fire bars, thereby reducing the amount of secondary air that can flow to the fire hole 13a corresponding to the fire transfer piece 21. This directly affects the combustion performance of the fire hole 13a, resulting in incomplete combustion at the fire hole 13a.

[0101] The utility model provides a fire grate, a burner and a gas water heater, which can improve the fire transmission performance without affecting the sufficiency of combustion and are preferably used in a low-noise combustion system.

[0102] Please refer to the comprehensive Figures 2 to 7 , a fire grate is provided in an embodiment of the present application specification, which may include: a fire grate body 1, a flow channel for circulating combustion gas is formed in the fire grate body 1, and an air inlet 101 and an outlet connected to the flow channel are provided on the fire grate body 1, the outlets including a first group of outlets 111 located on the upper end surface 110 of the fire grate body 1 and a second group of outlets 112 located on the side wall 120 of the fire grate body 1; the first group of outlets 111 are arranged in a predetermined manner along the length direction X of the fire grate to form a plurality of outlet combination units, and a partition is provided between two adjacent outlet combination units, a guide shell 2, the guide shell 2 is provided outside the side wall 120 of the fire grate body 1 and directly facing the second group of outlets 112, and along the height direction Y, the guide shell 2 has an upper end and a lower end, and a fire transfer component 20 is provided at the upper end of the guide shell 2 or near the upper end, and the fire transfer component 20 is provided corresponding to the partition and is used to transfer the flame between the guide shell 2 and the fire grate body 1 to the adjacent fire grate.

[0103] The present application will be described in detail below with reference to specific drawings and implementation methods.

[0104] In the embodiment of the present application, the fire bar may include: a fire bar main body 1 and a guide shell 2.

[0105] A flow channel for circulating combustion gas is formed in the fire bar body 1. Specifically, the structure of the flow channel can be adaptively adjusted according to actual installation requirements, design requirements, and application requirements, and this application does not make any specific restrictions here.

[0106] For example, the flow channel may include an expansion section and a refraction section along the direction of fluid flow. The expansion section may extend from front to back. When gas (e.g., a mixture of gas and air) is introduced into the flow channel, the cross-sectional area of the expansion section gradually increases along the flow direction of the gas, allowing for better mixing of the gas within the expansion section, ensuring uniform mixing of the gas and air. The refraction section bends and extends from the maximum cross-sectional area of the expansion section to form a generally U-shaped structure.

[0107] Among them, the air inlet 101 on the fire bar main body 1 can specifically be the entrance of the expansion section. The outlet on the fire bar main body 1 can include a first group of outlets 111 located on the upper end surface 110 of the fire bar main body 1. The specific structure of the upper end surface 110 of the fire bar main body 1 provided with the first group of outlets 111 can include any one of the following or a combination thereof: a plane, a curved surface, a V-shaped surface, etc. Of course, the specific structure of the upper end surface 110 is not limited to the above examples. Technicians in the relevant field may make other changes based on the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the scope of protection of this application.

[0108] Along the length direction X of the fire bar, the upper end surface 110 of the fire bar main body 1 may include a plurality of outlet assembly units. For each outlet assembly unit, it may include a plurality of first burners arranged at a first distance along the length direction X of the fire bar, and the first burner is used as the main burner of the fire bar and is connected to the flow channel. Among them, for a single outlet assembly unit, when ignited and burned, it can form a cluster of stable flames through the cooperation of a plurality of first burners. Among them, for a single outlet assembly unit, the specific number of the first burners can be 4, 5 or 6, etc. The number of the first burners should not be too many or too few, so as to form a cluster of stable flames. In addition, the specific structure of the first burner and the like are not specifically limited in this application.

[0109] A partition is provided between two adjacent outlet assembly units. This partition serves to separate the outlet assembly units, forming multiple stable flames along the lengthwise direction X of the fire bar. Furthermore, by providing this partition, secondary air flowing in from between the two fire bars can flow into the partition, replenishing the air required for combustion, thereby improving the combustion efficiency of the flames formed by the entire outlet assembly unit. Specifically, the partition can be a non-perforated area between two adjacent outlet assembly units, and the dimension of the partition along the lengthwise direction X of the fire bar is greater than the first distance.

[0110] A second set of outlets 112 may be provided on the side wall 120 of the fire bar body 1, and the second set of outlets 112 may be provided near the upper end surface 110. The second set of outlets 112 includes a plurality of second burners spaced apart along the length direction X of the fire bar. The second burners serve as auxiliary burners of the fire bar and are connected to the flow channel.

[0111] Specifically, the number of the second burners can vary according to the size of the fire bar main body 1 along the length direction X. The specific structure of the second burner can be a long strip hole, such as a rectangular hole, etc. Of course, the shape structure of the second burner is not limited to the above examples, and this application does not make specific limitations here.

[0112] The guide shell 2 can be detachably arranged outside the side wall 120 of the fire bar main body 1, facing the second group of outlets 112. Along the height direction Y, the guide shell 2 has an upper end and a lower end. The lower end of the guide shell 2 or a position close to the lower end fits with the side wall 120 of the fire bar main body 1. Above the fitting position of the guide shell 2 and the fire bar main body 1, a predetermined gap is formed between the guide shell 2 and the side wall 120 of the fire bar main body 1. The predetermined gap can be used to form a flame stabilization channel connected to the flow channel, and the airflow output from the second burner is output upward from the flame stabilization channel to cooperate with the flame formed by the main burner for combustion. Specifically, the airflow output from the flame stabilization channel will also form a flame (auxiliary flame) above it, which cooperates with the main flame formed by the main burner, which can make the combustion more complete and more stable, and allow the fire bar to achieve a greater combustion load. The fire bar is highly versatile and can be adapted to different models and different altitude environments.

[0113] A fire transfer component 20 is provided at or near the upper end of the guide shell 2. The fire transfer component 20 is provided in correspondence with the partition and is used to transfer the flame between the guide shell 2 and the fire bar main body 1 to the adjacent fire bar. By providing the fire transfer component 20, the fire transfer distance between the two fire bars can be reduced, thereby facilitating stable and rapid fire transfer between adjacent fire bars. Furthermore, since the fire transfer component 20 in the embodiment of the present application is provided in correspondence with the partition, it does not block the secondary air flowing to the outlet combination unit of the first group of outlets 111 while achieving stable and rapid fire transfer. Such a configuration does not affect the sufficiency of combustion.

[0114] In the embodiment of the present application, when the fire transmission component 20 is arranged corresponding to the said spacer, although there may be a certain degree of obstruction on the secondary air of the auxiliary burner, since the amount of gas per unit area at the auxiliary burner is small, the amount of secondary air required for its combustion is small. When the secondary air here is blocked to a certain extent, the impact on the combustion at this location is very small and can even be ignored.

[0115] In the prior art, since a fire transmission component 20 is provided at the position corresponding to the main fire port, the secondary air is blocked, thereby affecting the mixing of the gas and the secondary air at the main fire port, resulting in incomplete local combustion. In order not to affect the combustion performance, a commonly used method is to increase the fan speed to make up for the secondary air volume. The above-mentioned method of increasing the fan speed can alleviate the problem of incomplete combustion to a certain extent, but when the fan speed is increased, the noise and energy consumption of the whole machine will increase, which will directly reduce the user experience and may not meet the performance requirements of the low-noise system. In the present application, the above-mentioned technical solution does not affect the combustion performance, so there is no need to increase the fan speed, which can meet the requirements of low noise and low energy consumption.

[0116] In addition, in terms of space, the position of the auxiliary flame is closer to the fire transfer component 20 of the adjacent fire bar, which can further shorten the fire transfer distance, thereby further improving the stability, reliability and fire transfer efficiency of the fire transfer between adjacent fire bars.

[0117] On the whole, in the embodiment of the present application, a fire transmission component 20 is provided at the upper end of the guide shell 2 or near its upper end. The fire transmission component 20 is provided corresponding to the spacer portion of the fire bar main body 1. By utilizing the fire transmission component 20, the flame between the guide shell 2 and the fire bar main body 1 can be stably, reliably and efficiently transmitted to the adjacent fire bar. The overall fire transmission distance is short, the fire transmission path is cleverly set, the fire transmission success rate is high, and it will not affect the combustion performance of the fire bar main body 1, which can better meet the user's requirements for low noise and low energy consumption.

[0118] Please refer to Figure 4 、 Figure 5 and Figure 6 In some embodiments, the guide shell 2 includes a shell having a predetermined wall thickness, and the fire transfer component 20 extends from the shell in a direction away from the fire bar body 1, thereby achieving stable and rapid fire transfer between adjacent fire bars.

[0119] In this embodiment, the guide shell 2 may include a shell having a certain wall thickness, which can be mounted on the upper portion of the fire bar main body 1. Specifically, the guide shell 2 may include a first side shell 21 and a second side shell 22 connected to each other. The structures of the first side shell 21 and the second side shell 22 can be arranged symmetrically to improve the versatility of components and reduce manufacturing costs. Of course, they can also be arranged asymmetrically. A connecting portion 23 is provided between the first side shell 21 and the second side shell 22, which can be used to improve the overall strength of the guide shell 2.

[0120] The fire transmission component 20 can be integrally formed with the guide shell 2. Of course, the fire transmission component 20 can also be connected to the fire transmission component 20 by a fixed connection (such as welding) or a detachable connection.

[0121] In the embodiments of the present application, the integral molding of the fire transmission component 20 and the guide shell 2 is mainly used as an example for illustration, and other connection methods can be adaptively replaced with reference to the present application.

[0122] In a specific embodiment, the fire transmission component 20 is a sheet-like structure integrally formed with the housing.

[0123] In this specific embodiment, the flame transmission component 20 can be integrally formed with the housing, thereby simplifying the manufacturing process, reducing manufacturing costs, and ensuring a good yield rate. Specifically, the flame transmission component 20 can be formed by bending a portion of the sheet structure of the housing.

[0124] like Figure 7 As shown, specifically, the fire transfer component 20 may include: a transition portion 201 connected to the shell and a fire transfer main body 202 connected to the transition portion 201.

[0125] The transition portion 201 is primarily used to transition between the flame transmission component 20 and the housing, thereby directing the flame between the guide housing 2 and the fire bar main body 1. Specifically, the transition portion 201 can be arc-shaped, thereby facilitating smooth and effective flame diversion between the flame transmission component 20 and the housing. Of course, in this embodiment, a straight line transition, such as a right-angle transition, between the transition portion 201 and the guide housing 2 is also possible.

[0126] The flame transfer body 202 is used to guide the flame directed from the transition portion 201 to the adjacent fire bar. Specifically, the flame transfer body 202 is disposed horizontally as a whole and can be connected to adjacent fire transfer bodies 202. When the flame transfer body 202 is disposed horizontally, it is beneficial to ensure that the two adjacent fire transfer bodies 202 have a large contact area, thereby ensuring that the flame can be efficiently and reliably transferred from the fire transfer body 202 of one fire bar to the fire transfer body 202 of the other fire bar.

[0127] like Figure 2 As shown, in one embodiment, the upper end of the guide shell 2 is higher than the first group of outlets 111 , and the fire transmission component 20 is flush with or lower than the first group of outlets 111 .

[0128] In this embodiment, the upper end of the guide shell 2 is higher than the first group of outlets 111 as a whole. The part of the guide shell 2 that is higher than the first group of outlets 111 can be used to stop the auxiliary flame, so that an auxiliary flame with a better flame stabilizing effect on the first group of outlets 111 can be formed between the guide shell 2 and the fire bar main body 1.

[0129] The position where the fire transfer component 20 is provided on the guide shell 2 is flush with or lower than the first group of outlets 111 , thereby facilitating efficient transmission of the auxiliary flame at the fire transfer component 20 to the adjacent fire row.

[0130] Specifically, the fire transmission component 20 is lower than the first group of outlets 111 , and the height difference between the fire transmission component 20 and the first group of outlets 111 is within 2 mm.

[0131] In this embodiment, the flame transfer component 20 is positioned below the first group of outlets 111. For the guide housing 2 provided with the flame transfer component 20, utilizing the flame transfer component 20 positioned slightly below the first group of outlets 111 facilitates guiding the flame between the guide housing 2 and the fire bar body 1 in a direction away from the fire bar body 1, thereby efficiently, reliably, and stably transferring the flame to the adjacent fire bar.

[0132] Specifically, the upper surface of the flame transmission component 20 can be within 2 mm lower than the upper end surface 110 of the flame body. The distance difference between the two may vary slightly depending on the specific structural configuration of the flame body. In principle, it is sufficient to ensure that the flame between the guide housing 2 and the fire bar body 1 is guided away from the fire bar body 1, thereby efficiently, reliably, and stably transmitting the flame to the adjacent fire bar.

[0133] Please refer to Figure 2 、 Figure 3 and Figure 7 In one embodiment, the guide shell 2 is further provided with a guide structure 24 at a position corresponding to the spacer, and the fire transmission component 20 is provided at the guide structure 24 .

[0134] In this embodiment, a guide structure 24 may be provided on the guide shell 2, and the guide structure 24 is used to guide the flame between the guide shell 2 and the fire bar body 1 to the fire transmission component 20. Specifically, the guide structure 24 is provided corresponding to the spacer so as not to affect the combustion of the main flame.

[0135] Specifically, the guide structure 24 is a groove formed at the upper end of the guide shell 2 , and the groove has two side edges connected to the upper end of the guide shell 2 and a bottom edge 240 arranged between the two side edges, and the fire transmission component 20 is located on the bottom edge 240 .

[0136] In this embodiment, the guide structure 24 can specifically be a groove formed at the upper end of the guide shell 2. Specifically, taking the guide shell 2 as comprising a first side shell 21 and a second side shell 22 connected to each other, a groove is provided on each of the first side shell 21 and the second side shell 22 at a position corresponding to the spacer. This groove structure effectively guides the auxiliary flame toward the groove area. Furthermore, this groove area can be used to form a structure at the upper end of the guide shell 2 with a bottom edge 240 slightly lower than the height of the first set of outlets 111, facilitating the installation of the aforementioned flame transfer component 20.

[0137] In order to ensure that the flame guided into the groove can be smoothly guided to the fire transmission component 20 on the bottom edge 240 , a first guide portion 241 is formed obliquely between the side edge and the upper end of the guide shell 2 , and a second guide portion 242 is formed obliquely between the side edge and the bottom edge 240 .

[0138] Specifically, the side can be formed by splicing together multiple sections of inclined guide parts. For example, at least the side can include a first guide section and a second guide section that are inclined. The first guide section can be arranged near the upper end of the guide shell 2, and it has a first inclination angle; the second guide section can be arranged near the bottom edge 240 of the groove, and it has a second inclination angle. The first inclination angle can be smaller than the second inclination angle. By setting the guide part with gradually increasing inclination angle, the flame between the guide shell 2 and the fire bar main body 1 can be guided to the bottom edge 240, and then to the fire transmission component 20. Of course, the specific forms of the first guide part 241 and the second guide part 242 are not limited to the above examples. In addition, the side can also include more guide parts, and this application does not make specific limitations here.

[0139] In a specific embodiment, along the length direction X of the fire bar, the size of the bottom edge 240 of the groove is more than twice the size of the fire transfer component 20.

[0140] In this embodiment, along the length direction X of the fire bar, the bottom edge 240 of the groove is larger than the size of the fire transfer component 20. Specifically, in order to guide a sufficient amount of auxiliary flame between the guide shell 2 and the fire bar main body 1 to the fire transfer component 20, the bottom edge 240 of the groove can be set to be at least twice the size of the fire transfer component 20 along the length direction X of the fire bar. When the bottom edge 240 of the groove is at least twice the size of the fire transfer component 20 along the length direction X of the fire bar, the fire transfer component 20 can be positioned in the middle of the bottom edge 240, thereby facilitating the auxiliary flame guided by the groove to converge toward the fire transfer component 20 and be transferred to the adjacent fire bar through the fire transfer component 20.

[0141] Furthermore, along the length direction X of the fire bar, the size of the guide structure 24 is the same as or close to the size of the partition.

[0142] In this embodiment, along the length direction X of the fire bank, the dimensions of the guide structure 24 can be the same or nearly the same as the dimensions of the partition. This allows the guide structure 24 to guide the auxiliary flame corresponding to the partition to the fire transfer component 20 without negatively impacting the main flame. If the guide structure 24 is too small, it may not be able to guide a sufficient amount of auxiliary flame to the fire transfer component 20, and furthermore, the aforementioned relationship between the fire transfer component 20 and the bottom edge 240 of the groove may not be satisfied. If the guide structure 24 is too large, it may expand into the main flame area, thereby negatively impacting the main flame.

[0143] In this embodiment, the flame transfer component 20 and the partition can be arranged so that the projection of the flame transfer component 20 toward the fire bar main body 1 along the thickness direction Z of the fire bar is at least partially located within the interval where the partition is located. In one embodiment, the flame transfer component 20 is arranged directly opposite the partition. Specifically, the projection of the flame transfer component 20 toward the partition is completely located within the interval where the partition is located, thereby reliably ensuring that the auxiliary flame is directed to the adjacent fire bar by the flame transfer component 20 without negatively affecting the main flame.

[0144] It should be noted that the embodiments listed in this embodiment are primarily illustrative of the case where the fire transmission component 20 and the partition are located at the same height or nearly the same height. When the fire transmission component 20 is lower than the partition in the height direction Y, the area within which the partition is located can be understood as the area corresponding to the partition and its downward projection in the fire bar height direction Y.

[0145] In the embodiments of the present application, the size of the fire transfer component 20 is set to be relatively small. For example, when the size of the guide structure 24 is the same as or similar to the size of the partition along the length direction X of the fire bar, and the fire transfer component 20 is within 1 / 2 of the guide structure 24, by controlling the size of the fire transfer component 20, the interference with the airflow between the fire bars can be minimized, thereby minimizing the impact on the overall combustion of the fire bars.

[0146] In one embodiment, in the length direction X of the fire bar, the size of the partition is larger than the size of the fire transfer component 20.

[0147] In this embodiment, based on the functions that the spacer and the fire transmission component 20 need to achieve, the size of the spacer is larger than the size of the fire transmission component 20. In this embodiment of the present application, the size of the spacer and the size of the fire transmission component 20 can each maintain a reasonable setting value.

[0148] Furthermore, when the size of the spacer is larger than the size of the fire transmission component 20 along the length direction X of the fire bar, the location of the fire transmission component 20 can be designed more flexibly, and the location of the fire transmission component 20 can be optimized along the length direction X of the fire bar. For example, the fire transmission component 20 can be placed in an area with less secondary air, thereby further improving the reliability, stability, and success rate of fire transmission and enhancing the overall fire transmission effect.

[0149] In one embodiment, in the height direction Y of the fire bar, the fire transmission component 20 is arranged corresponding to the second group of outlets 112.

[0150] In this embodiment, the fire transmission component 20 is disposed correspondingly to the second group of outlets 112 in the height direction Y of the fire bar. Specifically, the fire transmission component 20 is disposed correspondingly to one of the auxiliary burners of the second group of outlets 112. The auxiliary burner corresponding to the fire transmission component 20 is referred to herein as the auxiliary burner for fire transmission. In the height direction Y of the fire bar, the downward projection of the fire transmission component 20 can overlap or partially overlap with the auxiliary burner for fire transmission. Of course, the downward projection of the fire transmission component 20 can be misaligned with the auxiliary burner for fire transmission.

[0151] In a specific embodiment, in the height direction Y of the fire grate, the downward projection of the fire transfer component 20 can cover at least a portion of the auxiliary fire port for fire transfer. After being so configured, the auxiliary flame generated when the airflow flowing out of the auxiliary fire port for fire transfer burns between the guide shell 2 and the fire grate can be efficiently guided to the fire transfer component 20 in the shortest path, thereby further improving the fire transfer effect.

[0152] In one embodiment, along the length direction X of the fire bar, the fire bar body 1 has a front side and a rear side relative to each other, the air inlet 101 is arranged close to the front side, and the fire transmission component 20 is arranged close to the rear side.

[0153] In this embodiment, the air inlet 101 can be set at a position close to the front side along the length direction X of the fire bar.

[0154] like Figure 3 As shown, specifically, a notch portion 130 may be further provided on the fire bar body 1, and the notch portion 130 is provided on the front side of the fire bar body 1 and away from the upper end surface 110 of the fire bar body 1; the notch portion 130 has a vertical side portion 132 extending along the height direction Y and a horizontal side portion 131 extending along the length direction X of the fire bar, and the air inlet 101 is provided on the vertical side portion 132.

[0155] Since a notch 130 is provided at the lower portion of the front side near the fire bar main body 1, for a burner formed by multiple fire bars, in an area where the notch 130 is not provided, the airflow channel structure between two adjacent fire bars is relatively complex (it needs to flow through the external gaps corresponding to the expansion sections and refraction sections of the two adjacent fire bars), the flow resistance in the airflow channel is relatively large, and the secondary air volume is relatively small, which is a relatively high-resistance area; in the area where the notch 130 is located, the airflow channel structure between two adjacent fire bars is relatively simple, the flow resistance in the airflow channel is relatively small, and the secondary air volume is relatively large, which is a relatively low-resistance area.

[0156] The fire transmission component 20 is arranged close to the rear side of the fire bar, that is, the fire transmission component 20 is arranged in a high resistance area with a small secondary air volume, which is beneficial to ensure the fire transmission performance.

[0157] In one embodiment, the partitions include a plurality of partitions along the length direction X of the fire bar, and the fire transmission component 20 is disposed at the partition closest to the rear side of the fire bar.

[0158] In this embodiment, the partitions include multiple sections along the length direction X of the fire bar. There can be only one fire transmission component 20, specifically positioned in the partition closest to the rear side of the fire bar. This partition is located in the aforementioned high-resistance zone. Furthermore, this partition can be located in an area within the high-resistance zone where the secondary air volume is relatively low. For example, along the height direction, the area directly opposite the partition is a closed area, thereby ensuring that the fire bar has optimal fire transmission performance.

[0159] Please refer to Figure 4 、 Figure 5 and Figure 6 In a specific embodiment, the guide shell 2 includes a first side shell 21 and a second side shell 22 connected to each other, the fire transmission component 20 includes a first fire transmission piece 211 arranged on the first side shell 21, and a second fire transmission piece 221 arranged on the second side shell 22, and the partition includes: a first partition 1131 closest to the rear side of the fire row, and at least one second partition 1132 spaced apart from the first partition 1131; the first fire transmission piece 211 and the second fire transmission piece 221 are both correspondingly arranged at the first partition 1131; the guide shell 2 also includes at least one connecting portion 23, the connecting portion 23 is located at the top end of the guide shell 2 for connecting the first side shell 21 and the second side shell 22, and the connecting portion 23 is located above the second partition 1132.

[0160] In this embodiment, the guide housing 2 may include a first side housing 21 and a second side housing 22 that are connected to each other. The specific structure of the guide housing 2 may refer to the specific description in the above embodiment, and will not be repeated herein.

[0161] The fire transmission component 20 may include a first fire transmission piece 211 provided on the first side shell 21 and a second fire transmission piece 221 provided on the second side shell 22. The specific structures of the first fire transmission piece 211 and the second fire transmission piece 221 may refer to the specific description of the fire transmission component 20, and will not be repeated herein.

[0162] The partitions may include a first partition 1131 closest to the rear of the fire bar and at least one second partition 1132 spaced apart from the first partition 1131. The first partition 1131 is the focal point of the present embodiment and corresponds to the fire transmission component 20. Both the first and second fire transmission pieces 211, 221 are positioned correspondingly within the first partition 1131.

[0163] The guide housing 2 may further include at least one connecting portion 23, located at the top end of the guide housing 2 and used to connect the first side housing 21 and the second side housing 22. The connecting portion 23 is located above the second partition 1132. Specifically, the connecting portion 23 may be integrally formed with the first side housing 21 and the second side housing 22 and shared by the first and second side housings 21 and 22; or the connecting portion 23 may be separately provided on the first and second side housings 21 and 22, and may be integrally formed with the first and second side housings 21 and 22, respectively. Of course, the specific configuration of the connecting portion 23 is not limited to the above example.

[0164] Please refer to Figure 4 The first side shell 21 may be provided with a first connecting portion 231, and the first connecting portion 231 may extend in the opposite direction to the first fire transmission piece 211; the second side shell 22 may be provided with a second connecting portion 232, and the second connecting portion 232 may extend in the opposite direction to the second fire transmission piece 221. The first connecting portion 231 and the second connecting portion 232 are connected to each other and can be abutted against the second spacer 1132, which can improve the installation reliability of the guide shell 2 without affecting the combustion performance of the fire grate.

[0165] Please refer to Figures 8 to 11 In an embodiment of the present application, a burner is also provided, which mainly includes the above-mentioned multiple fire bars 100. The burner can achieve the technical effect achieved by the fire bar 100 embodiment by setting the fire bar 100. For details, please refer to the specific description of the above-mentioned embodiment, and this application will not go into details here.

[0166] The multiple fire bars 100 are spaced apart along the thickness direction Z of the fire bars 100 , with a predetermined distance between adjacent fire bars 100 , forming a secondary air flow channel 300 . The secondary air flow channel 300 allows external air to be introduced into the burner, thereby replenishing the air required for combustion. The predetermined spacing can be determined based on the performance parameters of the burner, and this application does not impose any specific numerical restrictions.

[0167] In some embodiments, the burner also includes a supporting component 200 for mounting the fire bar 100, and the supporting component 200 may include: a primary air plate 210 provided with a first opening 2101, and a secondary air plate 220 provided with a second opening 222, wherein the first opening 2101 is arranged corresponding to the air inlet 101, and the second opening 222 is connected to the secondary air duct 300.

[0168] Please refer to Figure 8 and Figure 9 The burner is provided with a support component 200 for mounting the fire bar 100, and the support component 200 can specifically be a support frame, and multiple fire bars 100 can be detachably mounted in the support frame. The support frame may include multiple plates. Specifically, it may include a primary air plate 210 provided with a first opening 2101, and a secondary air plate 220 provided with a second opening 222. The primary air plate 210 and the secondary air plate 220 may be integrally formed or separately provided. In the embodiments of the present application, the example of the integrally formed primary air plate 210 and the secondary air plate 220 is mainly used for illustration.

[0169] See also Figure 10 and Figure 11 The first opening 2101 is provided corresponding to the air inlet 101 of the fire bar 100. When the fire bar 100 is installed in the support frame, the first opening 2101 is directly opposite to the air inlet 101. The fluid introduced from the first opening 2101 can flow into the flow channel through the air inlet 101. The primary air plate 210 can be provided on the front side of the fire bar 100.

[0170] The second opening 222 may face the secondary air duct 300 formed between two adjacent fire bars 100. Specifically, the second opening 222 may face the lower end of the fire bar 100, thereby introducing external air into the secondary air duct 300 through the second opening 222.

[0171] See also Figure 11In one embodiment, a notch 130 is further provided on the fire bar body 1, and the notch 130 has a vertical side 132 extending along the height direction Y and a horizontal side 131 extending along the length direction X of the fire bar 100. The primary air plate 210 is arranged corresponding to the vertical side 132; the secondary air plate 220 includes a first part arranged corresponding to the horizontal side 131 of the notch 130 and a second part arranged staggered with the notch 130. The opening rate of the outlet of the fire bar 100 corresponding to the first part is greater than the opening rate of the outlet of the fire bar 100 corresponding to the second part.

[0172] In this embodiment, referring to the detailed description of the fire grate 100 embodiment above, a notch 130 may be provided on the fire grate body 1. The notch 130 includes vertical edges 132 extending in the height direction Y and horizontal edges 131 extending along the length direction X of the fire grate 100. The primary air plate 210 is provided corresponding to the vertical edges 132.

[0173] The secondary air plate 220 may include a first portion corresponding to the horizontal side portion 131 of the notch portion 130 and a second portion offset from the notch portion 130. Figure 8 and Figure 11 It can be seen that the first part and the second part are respectively located at two ends of the primary air plate 210. The first part is located at the upper end of the primary air plate 210, and the second part is located at the lower end of the primary air plate 210.

[0174] Among them, the opening rate of the outlet of the fire bar 100 corresponding to the first part (the ratio of the opening area to the upper end surface 110) is greater than the opening rate of the outlet of the fire bar 100 corresponding to the second part, thereby further expanding the difference in air flow resistance in the secondary air duct 300 corresponding to the first part and the second part, ensuring that the air flow resistance in the secondary air duct 300 corresponding to the first part is smaller; the air flow resistance in the secondary air duct 300 corresponding to the second part is larger.

[0175] In one embodiment, a notch portion 130 is further provided on the fire bar main body 1, and the notch portion 130 has a vertical side portion 132 extending along the height direction Y and a horizontal side portion 131 extending along the length direction X of the fire bar, and the primary air plate 210 is arranged corresponding to the vertical side portion 132; the secondary air plate 220 includes a first part arranged corresponding to the horizontal side portion 131 of the notch portion 130 and a second part arranged staggered with the notch portion 130, and the outlet combination unit includes a plurality of first burners arranged at intervals, and the number of first burners of the outlet combination unit corresponding to the first part is greater than the number of first burners of the outlet combination unit corresponding to the second part.

[0176] In this embodiment, the detailed description of the notch 130 , the secondary air plate 220 , and the first burner port on the fire bar body 1 may refer to the detailed description of the above embodiment, and will not be repeated herein.

[0177] like Figure 9 As shown, the number of first burners of the outlet combination unit corresponding to the first part (low resistance area A) is greater than the number of first burners of the outlet combination unit corresponding to the second part (high resistance area B), that is, more first burners can be set on the upper end surface 110 of the fire bar main body 1 in the part corresponding to the low resistance area A, so as to reduce the heat load at a single first burner and optimize the emission by optimizing the burners; when the heat load at a single first burner is reduced, the fan speed matched with the heat load can be adaptively reduced to achieve low-noise operation.

[0178] In one embodiment, a notch portion 130 is further provided on the fire bar body 1, and the notch portion 130 has a vertical side portion 132 extending along the height direction Y and a horizontal side portion 131 extending along the length direction X of the fire bar 100, and the primary air plate 210 is arranged corresponding to the vertical side portion 132; the secondary air plate 220 includes a first part arranged corresponding to the horizontal side portion 131 of the notch portion 130 and a second part arranged staggered with the notch portion 130, and the outlet combination unit includes a plurality of first fire ports arranged at intervals, and no interval portion is provided between the two outlet combination units corresponding to the first part.

[0179] In this embodiment, the main difference from the above embodiment is that, in this embodiment, the partition between the two outlet combination units corresponding to the first part is directly eliminated, that is, the first burner is also evenly spaced at the partition, so as to achieve the above-mentioned reduction in the heat load at a single burner and optimize emissions; when the heat load at a single first burner is reduced, the fan speed matched with the heat load can be adaptively reduced, thereby achieving the purpose of low-noise operation.

[0180] In the above embodiment, the flow resistance in the secondary air flow channel 300 corresponding to the first portion is smaller than the flow resistance in the secondary air flow channel 300 corresponding to the second portion.

[0181] In one embodiment, the second part of the secondary air plate 220 is arranged horizontally as a whole, and the second part is provided with a first air inlet area 2201, a stop area 223 and a second air inlet area 224 in sequence from the front side to the rear side along the length direction X of the fire bar 100. The first air inlet area 2201 and the second air inlet area 224 are respectively provided with air inlets, and the stop area 223 is not provided with an air inlet. The stop area 223 is provided corresponding to the fire transfer component 20 in the height direction Y.

[0182] In this embodiment, the second portion of the secondary air plate 220 can be located at the bottom of the support component 200 and can be arranged horizontally as a whole. Of course, in some cases, it is not ruled out that it can be arranged at a certain angle. The second portion is provided with a first air inlet area 2201, a stop area 223 and a second air inlet area 224 along the longitudinal direction X of the fire bar 100 from front to back. The first air inlet area 2201 and the second air inlet area 224 are respectively provided with an air inlet for introducing air, namely the above-mentioned second opening 222. The stop area 223 is not provided with an air inlet, that is, the above-mentioned second opening 222 is not provided, or the aperture ratio of the air inlet of the stop area 223 is smaller than the aperture ratio of the air inlet of the first air inlet area 2201 and the second air inlet area 224, so that the flow resistance in the secondary air flow channel 300 between the two fire bars 100 corresponding to the stop area 223 is the largest, and the flow rate of external air flowing through the secondary air flow channel 300 at this position is the smallest. When the stopper 223 is positioned corresponding to the flame transmission component 20 in the height direction Y, the calorific value of the gas at the auxiliary burner corresponding to the stopper 223 can be further reduced, further increasing the flame transmission margin and making it easier to guide the flame along the thickness direction Z of the fire grate 100. In addition, by positioning the flame transmission component 20 at the position with the lowest flow rate in this air flow channel, the negative impact on combustion can be minimized.

[0183] Specifically, the stopper and the corresponding arrangement of the fire transfer component 20 in the height direction Y can be: the projection of the stopper area 223 toward the fire transfer component 20 at least partially covers the fire transfer component 20. Furthermore, the projection of the stopper area 223 toward the fire transfer component 20 can completely cover the fire transfer component 20. When the projection of the stopper area 223 toward the fire transfer component 20 completely covers the fire transfer component 20, it can ensure that the fire transfer component 20 achieves the best fire transfer effect, while the combustion performance is optimized, and the entire combustion system is in the optimal state; in particular, when it is arranged in conjunction with the heat exchanger, fan and other components on the upper part of the burner, the risk of resonance of the system can be minimized.

[0184] In one embodiment, the fire transmission components 20 between two adjacent fire bars 100 are overlapped or connected to form a fire transmission mechanism 400 , and the projection of the stopping area 223 toward the fire transmission mechanism 400 can completely cover the fire transmission mechanism 400 .

[0185] In this embodiment, for the burner, when the fire transfer components 20 between two adjacent fire bars 100 cooperate, they can form a fire transfer mechanism 400, and the projection of the stop area 223 toward the fire transfer mechanism 400 can completely cover the fire transfer mechanism 400, thereby achieving the technical effect described in the above embodiment.

[0186] Two adjacent fire transmission components 20 can be directly overlapped or butted together to form the fire transmission mechanism 400. For example, in one embodiment, the ends of the fire transmission components 20 on the fire bar body 1 can be arc-shaped. When two adjacent fire transmission components 20 are overlapped, a rectangular fire transmission bridge can be formed. That is, the arc-shaped portions can overlap, thereby ensuring the stability and reliability of the fire transmission.

[0187] A gas water heater is also provided in an embodiment of the present application, and the gas water heater mainly includes the above-mentioned burner. The gas water heater can achieve the technical effect achieved by the burner embodiment by setting the burner. For details, please refer to the specific description of the above-mentioned embodiment, and this application will not go into details here.

[0188] In addition, the gas water heater may further include a fan and a heat exchanger. The burner, heat exchanger and fan are arranged in sequence. There is a frame between the burner and the heat exchanger. The fan is an exhaust fan. After the fan is started, a negative pressure can be formed in the frame.

[0189] In the embodiment of the present application, the gas water heater may specifically be a gas water heater, a wall-mounted boiler, or other devices that mainly use gas for combustion and heating.

[0190] The fan is an exhaust fan, specifically a top exhaust fan. When the fan is a top exhaust fan, the gas water heater may include a fan, a heat exchanger, and a burner, arranged sequentially from top to bottom. A frame is provided at least between the burner and the heat exchanger. Of course, the frame may also extend upward or downward.

[0191] When the user needs to use the gas water heater, the various components in the gas water heater can work together. The specific working principle of the gas water heater will not be described in detail in this application.

[0192] It should be noted that, in the description of this application, the terms "first," "second," etc., are used solely for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, nor should they be understood to indicate or imply relative importance. Furthermore, in the description of this application, unless otherwise specified, "plurality" means two or more.

[0193] The above-mentioned various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0194] The above are only a few embodiments of the present invention. Although the embodiments disclosed in the present invention are as above, the contents are only for the purpose of facilitating the understanding of the present invention and are not intended to limit the present invention. Any person skilled in the art of the present invention may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in the present invention. However, the scope of patent protection of the present invention shall still be based on the scope defined by the appended claims.

Claims

1. A fire grate, characterized in that: The fire bar comprises: A fire grate body, wherein a flow channel for circulating combustion gas is formed in the fire grate body, and the fire grate body is provided with an air inlet and an outlet connected to the flow channel, wherein the outlets include a first group of outlets located on the upper end surface of the fire grate body and a second group of outlets located on the side wall of the fire grate body; the first group of outlets are arranged in a predetermined manner along the length of the fire grate to form a plurality of outlet assembly units, and a spacer is provided between two adjacent outlet assembly units; A guide shell is arranged outside the side wall of the fire bar body and facing the second group of outlets. In the height direction, the guide shell has an upper end and a lower end. A fire transfer component is provided at the upper end of the guide shell or near the upper end. The fire transfer component is arranged corresponding to the spacer and is used to transfer the flame between the guide shell and the fire bar body to the adjacent fire bar.

2. The fire bar according to claim 1, characterized in that: The guide shell includes a shell with a predetermined wall thickness, and the fire transmission component extends from the shell in a direction away from the fire bar main body.

3. The fire bar according to claim 2, characterized in that: The fire transmission component is a sheet-like structure integrally formed with the shell.

4. The fire bar according to claim 3, characterized in that: The fire transfer component includes a transition portion connected to the shell and a fire transfer main body connected to the transition portion.

5. The fire bar according to claim 4, characterized in that: The fire transmission main body is arranged horizontally as a whole.

6. The fire bar according to claim 1, wherein: The upper end of the guide shell is higher than the first group of outlets, and the fire transmission component is flush with or lower than the first group of outlets.

7. The fire bar according to claim 6, characterized in that: The fire transmission component is lower than the first group of outlets, and the height difference between the fire transmission component and the first group of outlets is within 2 mm.

8. The fire bar according to claim 6, wherein: The guide shell is further provided with a guide structure at a position corresponding to the spacer, and the fire transmission component is arranged at the guide structure.

9. The fire bar according to claim 8, characterized in that Along the length direction of the fire bar, the size of the guide structure is the same as or close to the size of the partition.

10. The fire bar according to claim 8, characterized in that The guide structure is a groove formed at the upper end of the guide shell. The groove has two side edges connected to the upper end of the guide shell and a bottom edge arranged between the two side edges. The fire transmission component is located on the bottom edge.

11. The fire bar according to claim 10, characterized in that: A first guide portion that is inclined is formed between the side edge and the upper end of the guide shell, and a second guide portion that is inclined is formed between the side edge and the bottom edge.

12. The fire bar according to claim 10, wherein: Along the length direction of the fire bar, the bottom side size of the groove is more than twice the size of the fire transfer component.

13. The fire bar according to claim 1, wherein: The fire transmission component is arranged opposite to the spacer.

14. The fire bar according to claim 13, wherein: In the length direction of the fire bar, the size of the partition is larger than the size of the fire transfer component.

15. The fire bar according to claim 1, wherein: In the height direction of the fire bar, the fire transmission component is arranged corresponding to the second group of outlets.

16. The fire bar according to claim 1, wherein: The lower end of the guide shell or a position close to the lower end is fitted with the side wall of the fire bar body. Above the fitting position of the guide shell and the fire bar body, a predetermined gap is formed between the guide shell and the side wall of the fire bar body.

17. The fire bar according to claim 1, wherein: Along the length direction of the fire bar, the fire bar body has a front side and a rear side opposite to each other, the air inlet is arranged close to the front side, and the fire transmission component is arranged close to the rear side.

18. The fire bar according to claim 17, wherein: There are a plurality of partitions along the length direction of the fire bar, and the fire transmission component is arranged at the partition closest to the rear side of the fire bar.

19. The fire bar according to claim 18, wherein: The guide shell includes a first side shell and a second side shell that are connected to each other. The fire transmission component includes a first fire transmission piece arranged on the first side shell and a second fire transmission piece arranged on the second side shell. The partition includes: a first partition closest to the rear side of the fire row and at least one second partition spaced apart from the first partition; the first fire transmission piece and the second fire transmission piece are both correspondingly arranged at the first partition; the guide shell also includes at least one connecting part, which is located at the top end of the guide shell and is used to connect the first side shell and the second side shell, and the connecting part is located above the second partition.

20. The fire bar according to claim 17, wherein: The fire grate main body is also provided with a notch portion, which is provided on the front side of the fire grate main body and away from the upper end surface of the fire grate main body; the notch portion has a vertical side portion extending along the height direction and a horizontal side portion extending along the length direction of the fire grate, and the air inlet is provided on the vertical side portion.

21. A burner, characterized in that: It comprises a plurality of fire bars according to any one of claims 1 to 19, wherein the plurality of fire bars are arranged at intervals along the thickness direction of the fire bars, and a predetermined distance is spaced between two adjacent fire bars to form a secondary air flow channel.

22. The burner according to claim 21, characterized in that The burner also includes a supporting component for mounting the fire bar, and the supporting component includes: a primary air plate provided with a first opening, and a secondary air plate provided with a second opening, the first opening is arranged corresponding to the air inlet, and the second opening is connected to the secondary air flow channel.

23. The burner according to claim 22, characterized in that A notch is further provided on the fire bar body, and the notch has a vertical side extending along the height direction and a horizontal side extending along the length direction of the fire bar, and the primary air plate is arranged corresponding to the vertical side; the secondary air plate includes a first part arranged corresponding to the horizontal side of the notch and a second part arranged staggered with the notch, and the opening rate of the fire bar outlet corresponding to the first part is greater than the opening rate of the fire bar outlet corresponding to the second part.

24. The burner according to claim 22, wherein A notch is also provided on the fire grate main body, and the notch has a vertical side extending along the height direction and a horizontal side extending along the length direction of the fire grate, and the primary air plate is arranged corresponding to the vertical side; the secondary air plate includes a first part corresponding to the horizontal side of the notch and a second part staggered with the notch, and the outlet assembly unit includes a plurality of first burners arranged at intervals, and the number of first burners of the outlet assembly unit corresponding to the first part is greater than the number of first burners of the outlet assembly unit corresponding to the second part.

25. The burner according to claim 22, wherein A notch is also provided on the fire bar body, and the notch has a vertical side extending along the height direction and a horizontal side extending along the length direction of the fire bar, and the primary air plate is arranged corresponding to the vertical side; the secondary air plate includes a first part corresponding to the horizontal side of the notch and a second part staggered with the notch, and the outlet assembly unit includes a plurality of first fire ports arranged at intervals, and no interval is provided between the two outlet assembly units corresponding to the first part.

26. The burner according to any one of claims 23 to 25, characterized in that The flow resistance in the secondary air flow channel corresponding to the first portion is smaller than the flow resistance in the secondary air flow channel corresponding to the second portion.

27. The burner according to claim 26, characterized in that The second part of the secondary air plate is arranged horizontally as a whole, and the second part is provided with a first air inlet area, a stop area and a second air inlet area in sequence from the front side to the rear side along the length direction of the fire bar. The first air inlet area and the second air inlet area are respectively provided with air inlets, and the stop area is not provided with an air inlet or the opening rate of the air inlet of the stop area is smaller than the opening rate of the air inlet of the first air inlet area and the second air inlet area. The stop area is arranged corresponding to the fire transfer component in the height direction.

28. The burner according to claim 27, characterized in that The projection of the stopping area toward the fire transfer component can completely cover the fire transfer component.

29. The burner according to claim 27, wherein The fire transmission components between two adjacent fire rows are overlapped or connected to each other to form a fire transmission mechanism, and the projection of the stop area toward the fire transmission mechanism can completely cover the fire transmission mechanism.

30. A gas water heater, characterized in that: The gas water heater comprises: a burner as described in any one of claims 21-29.

31. The gas water heater according to claim 30, wherein: The gas water heater also includes a fan and a heat exchanger. The burner, heat exchanger and fan are arranged in sequence. There is a frame between the burner and the heat exchanger. The fan is an exhaust fan. After the fan is started, negative pressure can be formed in the frame.

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