Hydrogen energy gas appliance

Abstract

The utility model provides a hydrogen energy gas appliance, which comprises a shell, a gas inlet pipe and a gas outlet pipe, the furnace core is arranged in the shell, a hydrogen input hole and a plurality of hydrogen output holes are formed in the furnace core, the hydrogen output holes are communicated with the hydrogen input hole, and the hydrogen input hole is externally connected with a hydrogen supply device; the plurality of furnace ends are correspondingly connected with the plurality of hydrogen output holes, and the furnace ends are exposed out of the furnace frame; a plurality of fuel gas holes are formed in the upper end of the furnace end, and the fuel gas holes are communicated with the hydrogen output hole; and the igniter is arranged on the furnace core, and the upper end of the igniter is exposed out of the furnace frame. According to the hydrogen energy gas appliance, the closed furnace frame is adopted, hydrogen can be prevented from escaping, the connecting pipeline of the furnace end and the furnace core is not provided with an air hole channel, air can be prevented from being mixed in, and pure hydrogen combustion is achieved; meanwhile, compared with a traditional gas appliance design, the phenomena of hydrogen embrittlement, tempering, thermo-acoustic oscillation and the like can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy utilization, in particular to a hydrogen energy burner. Background Art

[0002] There are two main types of gas stoves commonly found on the market: those that use coal gas as fuel, and those that use natural gas as their primary fuel. To ensure efficient and safe operation, both types of stoves require a proper mixture of gas and air before combustion. This requires an open stove frame and dedicated openings in the connection between the stove core and the burner to introduce the appropriate amount of air, ensuring adequate combustion, thereby improving thermal efficiency and reducing harmful gas emissions.

[0003] However, with the development of clean energy, hydrogen is gaining more and more attention as an efficient and clean energy source. A notable feature of hydrogen combustion is that it can achieve efficient combustion without the need for additional mixing with air, which is different from traditional fuel gases (such as natural gas or coal gas). Although this feature simplifies the combustion process, it also brings some new challenges. For example, hydrogen embrittlement may occur during hydrogen combustion, that is, the embrittlement of materials after long-term exposure to a hydrogen environment, affecting the safety and service life of the equipment; hydrogen combustion is prone to thermal acoustic oscillations, which not only affects the user experience, but may also cause damage to the equipment; in addition, the flashback problem is also one of the common safety hazards in hydrogen combustion.

[0004] Therefore, considering the characteristics of hydrogen combustion and its potential risks, existing natural gas or coal gas stoves can adapt to mixed fuels containing 20% hydrogen, but cannot meet the combustion of pure hydrogen. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a hydrogen burner that can solve the problem that the gas stoves in the prior art cannot meet the requirements of pure hydrogen combustion.

[0006] In order to achieve the above purpose and other purposes, the present invention is implemented by including the following technical solutions: As a first aspect, the present invention proposes a hydrogen fuel appliance, including an outer shell, on which a closed furnace rack is provided; a furnace core, which is arranged in the outer shell, and is provided with a hydrogen input hole and a plurality of hydrogen output holes, and the plurality of hydrogen output holes are respectively connected to the hydrogen input hole, and the hydrogen input hole is externally connected to a hydrogen supply device; a plurality of burners, which are correspondingly connected to the plurality of hydrogen output holes, and the burners are exposed from the furnace rack; a plurality of gas holes are opened at the upper end of the burner, and the gas holes are connected to the hydrogen output holes; an igniter is arranged on the furnace core, and the upper end of the igniter is exposed from the furnace rack.

[0007] In one embodiment, the furnace frame is provided with a center cover, and a first through hole and a second through hole are formed on the center cover. The first through hole and the second through hole are respectively provided at positions corresponding to the positions of the furnace head and the igniter.

[0008] In one embodiment, the furnace head is connected to the hydrogen output hole through a connecting device, and the connecting device includes a closed tube body; the aperture of the first through hole is larger than the upper end outer diameter of the connecting device and smaller than the lower end outer diameter of the furnace head.

[0009] In one embodiment, both ends of the connecting device are respectively provided with external threads, and the hydrogen output hole and the furnace head are respectively provided with internal threads matching the external threads.

[0010] In one embodiment, the furnace core, furnace head and connecting device are made of pure copper, aluminum alloy and / or stainless steel.

[0011] In one embodiment, a backflow preventer is provided between the hydrogen input hole and the hydrogen supply device.

[0012] In one embodiment, the plurality of burners are arranged in a circular array with one burner as the center, and the igniter is disposed close to the burner at the center.

[0013] In one embodiment, a trapezoidal step is provided at the upper end of the burner head, and a plurality of the gas holes are evenly distributed in a circumferential form on the upper end surface and side walls of the trapezoidal step.

[0014] In one embodiment, an igniter connected to the igniter is provided on a side of the housing.

[0015] In one embodiment, the hydrogen supply device is a hydrogen storage device or a hydrogen production and storage energy device.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The hydrogen burner provided by this utility model adopts a closed furnace frame to prevent hydrogen from escaping, and there is no air channel design on the connecting pipe between the burner head and the furnace core, which can avoid mixing with air and achieve pure hydrogen combustion;

[0018] 2. The utility model adopts a connecting device to connect the burner head and the furnace core, which can realize the detachable burner head and facilitate the installation of the burner head on the closed furnace rack;

[0019] 3. The two ends of the connecting device of the utility model are respectively connected to the furnace head and the furnace core by threads, which can realize convenient and efficient component installation and connection, and facilitate assembly and processing;

[0020] 4. The furnace core, burner head and connecting device of the utility model are key components that come into direct contact with hydrogen. They are all made of hydrogen-resistant materials such as pure copper, aluminum alloy and / or stainless steel, and have good anti-hydrogen embrittlement effect, which can ensure the safety and durability of hydrogen burners.

[0021] 5. The utility model sets a backflow preventer between the hydrogen input hole and the hydrogen supply device, which can effectively avoid the backfire problem during hydrogen combustion and improve the safety of use;

[0022] 6. The burner and igniter of this utility model adopt a layout similar to that of a fierce fire stove, which can ensure the effective ignition of hydrogen burners;

[0023] 7. A trapezoidal step is provided at the upper end of the burner of the present invention, and a number of gas holes are evenly distributed in a circular form on the upper end surface and side wall of the trapezoidal step; the design of the trapezoidal step can form a staggered gas hole layout, which not only ensures a sufficient number of gas holes, but also maintains a reasonable spacing between each gas hole, avoids the mutual interference of flames caused by too dense gas holes, and achieves a more uniform hydrogen distribution; through this layout, hydrogen can form a multi-layer, multi-angle injection path, thereby greatly improving the uniformity of hydrogen in the space, and further enhancing the hydrogen combustion efficiency and stability; at the same time, the layout of gas holes at different levels can also promote the uniform diffusion of the flame in the entire combustion area, reduce the formation of local high-temperature areas, and help reduce thermoacoustic oscillations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Shown is a top view schematic diagram of a hydrogen burner of the present invention.

[0025] Figure 2 Display as Figure 1 Section view along AA.

[0026] Figure 3 Shown is a schematic structural diagram of the furnace rack in the present invention.

[0027] Figure 4 Shown is a schematic structural diagram of the furnace core, connecting device and furnace head in the present invention.

[0028] Figure 5 Shown is a schematic diagram of the three-dimensional structure of a hydrogen burner of the present invention. DETAILED DESCRIPTION

[0029] See also Figure 1-Figure 5 The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0030] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by those skilled in the art. They are not intended to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size, without affecting the efficacy and objectives that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0031] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meaning as understood by a person of ordinary skill in the field to which the present invention belongs. Similar words such as "one", "an" or "the" used in the present invention do not indicate a limit on quantity, but are only used to indicate the existence of at least one. Similar words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The serial numbers assigned to the components in this specification, such as "first", "second", etc., are only used to distinguish the objects being described and do not have any order or technical meaning. The "connection" mentioned in the present invention, unless otherwise specified, includes direct and indirect connections.

[0032] In order to avoid confusion with the present invention, some technical features known in the art are not described.

[0033] like Figure 1-Figure 5 As shown, this embodiment provides a hydrogen fuel burner, comprising a housing 10, a furnace frame 20, a furnace core 30, a burner head 41, and an igniter 50. The housing 10 is provided with a closed furnace frame 20; the furnace core 30 is disposed within the housing 10 and is provided with a hydrogen inlet 31 and a plurality of hydrogen outlets 32. The plurality of hydrogen outlets 32 are respectively connected to the hydrogen inlet 31, and the hydrogen inlet 31 is connected to an external hydrogen supply device; the plurality of burners 41 are connected to the plurality of hydrogen outlets 32 in a one-to-one correspondence, the burners 41 being exposed from the furnace frame 20, and the upper end of the burner head 41 is provided with a plurality of gas holes 411a, which are connected to the hydrogen outlets 32; the igniter 50 is disposed on the furnace core 30, with its upper end exposed from the furnace frame 20.

[0034] The hydrogen burner provided in this embodiment adopts a closed furnace frame, which can prevent hydrogen from escaping and mixing with air, thereby achieving pure hydrogen combustion.

[0035] like Figure 3As shown, the grate 20 adopts a closed structural design, which is different from the traditional open grate with a hollow design. In this embodiment, the grate 20 is provided with a central cover 21. The central cover 21 is provided with a first through hole 211 for exposing the burner 41 and a second through hole 212 for exposing the igniter 50. The first through hole 211 and the second through hole 212 are respectively provided at positions corresponding to the positions of the burner 41 and the igniter 50.

[0036] Furthermore, since the furnace rack 20 is closed, in order to ensure that only the furnace head 41 with the gas hole 411a is exposed from the center cover 21, Figure 2 and Figure 4 As shown, the burner head 41 needs to be connected to the furnace core 30 through a connecting device 42 so that the gas hole 411a of the burner head 41 is connected to the hydrogen output hole 32. The connecting device 42 adopts a closed tube body design to avoid mixing of air; at the same time, the aperture of the first through hole 211 is designed to be slightly larger than the upper end outer diameter of the connecting device 42 and smaller than the lower end outer diameter of the burner head 41, so as to ensure that the upper end of the connecting device 42 can expose the center cover 21, and the burner head 41 can cover the first through hole 211 after installation, so as to achieve the closed effect of the furnace frame 20.

[0037] Furthermore, in order to facilitate the installation and connection between the connecting device 42 and the furnace head 41 and the furnace core 30, external threads can be provided at both ends of the connecting device 42, and internal threads matching the external threads can be provided in the hydrogen output hole 32 and the furnace head 41, so that the furnace core 30, the connecting device 42 and the furnace head 41 can be quickly and conveniently assembled through threaded connection.

[0038] Furthermore, to ensure that the hydrogen burner is less susceptible to hydrogen embrittlement and maintains its safety and durability, key components are manufactured from hydrogen-embrittlement-resistant materials. Specifically, the furnace core 30, burner head 41, and connecting device 42 are key components that come into direct contact with hydrogen and are preferably made from hydrogen-embrittlement-resistant materials such as pure copper, aluminum alloy, or austenitic stainless steel. The materials of the furnace core 30, burner head 41, and connecting device 42 can be the same or different.

[0039] Furthermore, since hydrogen combustion is prone to backfire, a backflow preventer can be installed between the hydrogen inlet 31 and the external hydrogen supply device. This backflow preventer is a mature product on the market, and its structure is not described here in detail. The hydrogen supply device can be a hydrogen storage device (such as a solid-state hydrogen storage bottle, a high-pressure hydrogen storage bottle) or a hydrogen production and storage energy device.

[0040] Please review Figure 5In order to ensure effective ignition of the hydrogen burner, it is necessary to design the arrangement of the burner 41 and the igniter 50. Specifically, the multiple burners 41 are arranged in a circular array with one burner 41 as the center, and the igniter 50 is arranged close to the burner 41 at the center.

[0041] Furthermore, a trapezoidal step 411 is provided at the upper end of the burner head 41. Several gas holes 411a are evenly distributed in a circular pattern on the upper end surface and side walls of the trapezoidal step 411. The gas holes 411a are oriented perpendicular to the upper end surface or side walls of the trapezoidal step 411. The design of the trapezoidal step 411 allows for a staggered gas hole layout, ensuring a sufficient number of gas holes while maintaining reasonable spacing between each gas hole. This avoids flame interference caused by overly dense gas holes and achieves a more uniform hydrogen distribution. This layout allows hydrogen to form multi-layered, multi-angle injection paths, significantly improving the uniformity of hydrogen within the space and, in turn, enhancing hydrogen combustion efficiency and stability. Furthermore, the different levels of gas hole layout promote uniform flame diffusion throughout the combustion area, reducing the formation of localized high-temperature zones and helping to reduce thermoacoustic oscillations.

[0042] In addition, if Figure 1 and Figure 5 As shown, the side of the housing 10 is provided with an igniter 11 connected to the igniter 50, and the igniter 11 adopts a downward pressure ignition method. Figure 1 As shown, the igniter 11 can be arranged on the opposite side of the hydrogen input hole 31. In other embodiments, the igniter 11 can also be arranged on the same side of the hydrogen input hole 31.

[0043] Therefore, the present invention effectively overcomes the shortcomings of the prior art and possesses high industrial value. The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A hydrogen fuel burner, characterized in that: include a housing on which a closed furnace frame is disposed; A furnace core is disposed in the shell and is provided with a hydrogen input hole and a plurality of hydrogen output holes, wherein the plurality of hydrogen output holes are respectively connected to the hydrogen input hole, and the hydrogen input hole is externally connected to a hydrogen supply device; A plurality of burners are connected to the plurality of hydrogen output holes, and the burners are exposed from the furnace frame; a plurality of gas holes are opened at the upper end of the burner, and the gas holes are connected to the hydrogen output holes; The igniter is arranged on the furnace core, and the upper end of the igniter is exposed from the furnace frame.

2. The hydrogen burner according to claim 1, characterized in that: The furnace frame is provided with a central cover, and a first through hole and a second through hole are opened on the central cover. The arrangement positions of the first through hole and the second through hole respectively correspond to the arrangement positions of the furnace head and the igniter.

3. The hydrogen burner according to claim 2, characterized in that: The furnace head is connected to the hydrogen output hole through a connecting device, and the connecting device includes a closed tube body; the aperture of the first through hole is larger than the upper end outer diameter of the connecting device and smaller than the lower end outer diameter of the furnace head.

4. The hydrogen burner according to claim 3, characterized in that: Both ends of the connecting device are respectively provided with external threads, and the hydrogen output hole and the furnace head are respectively provided with internal threads matching the external threads.

5. The hydrogen fuel burner according to claim 3 or 4, characterized in that: The furnace core, furnace head and connecting device are made of pure copper, aluminum alloy and / or stainless steel.

6. The hydrogen fuel burner according to claim 1, characterized in that: A backflow preventer is provided between the hydrogen input hole and the hydrogen supply device.

7. The hydrogen fuel burner according to claim 1, characterized in that: The plurality of burners are arranged in a circular array with one burner as the center, and the igniter is arranged close to the burner located at the center.

8. The hydrogen burner according to claim 1, characterized in that: A trapezoidal step is provided at the upper end of the burner head, and a plurality of gas holes are evenly distributed in a circumferential form on the upper end surface and side wall of the trapezoidal step.

9. The hydrogen fuel burner according to claim 1, characterized in that: An igniter connected to the igniter is provided on the side of the shell.

10. The hydrogen fuel burner according to claim 1, characterized in that: The hydrogen supply device is a hydrogen storage device or a hydrogen production and storage energy equipment.

Images