H-shaped burner and gas flat stove

Abstract

The utility model discloses a kind of H-shaped combustor, comprising: air inlet pipe, along longitudinal extension;Transverse air outlet pipe, along transverse extension, the middle part of transverse air outlet pipe is connected with one end of air inlet pipe;At least two longitudinal air outlet pipes, along longitudinal extension, the middle part of two longitudinal air outlet pipes is connected in the both ends of transverse air outlet pipe, to form H-shaped structure with transverse air outlet pipe together;Multiple fire holes, fire hole is arranged along the axial direction of transverse air outlet pipe and longitudinal air outlet pipe;Several fire holes, be located in the middle part of transverse air outlet pipe and with the fire hole of this place and set side by side;Fire baffle, be located in the middle part of transverse air outlet pipe and located in the side of fire hole;Wherein, the height of fire baffle is greater than the orifice height of fire hole.The utility model has the advantages of effectively solving the problem of ignition difficulty, low success rate and uneven flame distribution caused by central airflow too fast.

Description

Technical Field

[0001] This utility model relates to the field of gas-fired flat-plate furnace technology, and in particular to an H-shaped burner and a gas-fired flat-plate furnace. Background Technology

[0002] Gas-fired flat-plate boilers typically employ H-shaped burners. A typical H-shaped burner mainly consists of a transverse gas distribution pipe (transverse outlet pipe) and two vertically connected longitudinal combustion pipes (longitudinal outlet pipes). Gas is supplied through an inlet pipe connected to the middle of the transverse outlet pipe. After entering the transverse outlet pipe from the inlet pipe, the gas is split to both sides, then enters the two longitudinal outlet pipes, and finally is ejected from the flame outlets distributed throughout the pipes for combustion.

[0003] However, through in-depth research and practice of existing technologies, the inventors discovered that the aforementioned traditional H-shaped burner structure has inherent technical defects. Specifically, because the gas directly impacts the central region of the transverse outlet pipe through the inlet pipe, the gas pressure and velocity at this central connection point are significantly higher than at other locations on the burner. This uneven internal airflow distribution leads to at least two problems:

[0004] First, ignition is extremely difficult and has a low success rate. During the ignition operation, the high-speed gas flow ejected from the flame outlet in the middle of the horizontal gas outlet pipe acts like a strong wind, instantly extinguishing or blowing away the flame, causing the flame to be unable to adhere stably to the flame outlet and resulting in ignition failure.

[0005] Second, uneven flame distribution affects heating efficiency. Due to the excessively rapid airflow in the central area and the relatively gentle airflow in the longitudinal exhaust pipes at both ends, the flame in the central area is too high and too strong during combustion, while the flames at both ends are weaker, failing to form a uniformly distributed flame array.

[0006] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and this utility model is made based on this situation. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide an H-shaped burner and gas-fired flat-plate furnace that effectively solves the problems of difficult ignition, low success rate and uneven flame distribution caused by excessive central airflow.

[0008] This utility model can be achieved through the following technical solutions:

[0009] To solve the above-mentioned technical problems, this utility model provides an H-shaped burner, comprising:

[0010] The intake pipe extends longitudinally;

[0011] A transverse air outlet extends laterally, and the middle part of the transverse air outlet is connected to one end of the air inlet pipe;

[0012] At least two longitudinal vent pipes extend longitudinally, and the middle portions of the two longitudinal vent pipes are respectively connected to the two ends of the transverse vent pipe, thereby forming an H-shaped structure together with the transverse vent pipe.

[0013] Multiple flame outlets are arranged along the axial direction of the transverse and longitudinal gas outlet pipes.

[0014] Several fire holes are provided in the middle of the transverse gas outlet pipe and arranged side by side with the fire outlet at that location;

[0015] A fire baffle is provided in the middle of the transverse vent pipe and located on one side of the fire hole;

[0016] The height of the fire baffle is greater than the height of the fire hole opening.

[0017] To further address the technical problems to be solved by this utility model, this utility model provides an H-shaped burner in which the upper end of the baffle plate is provided with a bent portion, which bends toward the centerline of the transverse gas outlet pipe to guide the flame.

[0018] In order to further solve the technical problems to be solved by this utility model, in the H-shaped burner provided by this utility model, the baffle plate and the air inlet pipe are arranged on both sides of the middle of the transverse air outlet pipe.

[0019] In order to further solve the technical problems to be solved by this utility model, in the H-shaped burner provided by this utility model, a plurality of the flame outlet holes are provided on the top pipe wall of the horizontal gas outlet pipe and the vertical gas outlet pipe.

[0020] To further solve the technical problem to be solved by this utility model, the H-shaped burner provided by this utility model also includes an ignition device. The ignition device includes an ignition needle and a plurality of ignition holes. The ignition holes are located at one end of one of the longitudinal gas outlet pipes and are arranged circumferentially starting from the gas outlet. The ignition needle is located adjacent to the ignition holes.

[0021] This utility model can also be achieved through the following technical solutions:

[0022] A gas-fired flat-plate oven includes an oven body, in which the aforementioned H-shaped burner is provided, and also includes a baking tray detachably connected above the H-shaped burner, and a control valve connected to the air inlet pipe.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] This invention utilizes a synergistic structure of a flame-through hole and a baffle plate added to the middle of the transverse exhaust pipe of an H-shaped burner. This design employs the flame-through hole to divert the flow, creating a stable, easily ignitable guiding flame. Simultaneously, the baffle plate acts as a physical barrier, effectively preventing the guiding flame from being extinguished by the mainstream high-speed airflow and directing it towards the main exhaust port. This combined design of "first igniting a small fire, then using the small fire to ignite a large fire" with "windproof and flow-guiding" effectively solves the core technical problem of difficult ignition and low success rate caused by excessively rapid central airflow in existing technologies. Furthermore, the baffle plate optimizes the distribution of the central flame, significantly improving heating uniformity. Ultimately, this results in the burner and the gas-fired flat-plate furnace using this burner exhibiting superior advantages such as more reliable ignition, safer operation, and more uniform heating. Attached Figure Description

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0026] Figure 1 This is a three-dimensional structural diagram of the burner;

[0027] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle;

[0028] Figure 3 This is an exploded view of a gas-fired flat-plate boiler. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Please see Figures 1 to 3 This embodiment provides an H-shaped burner. The H-shaped burner has been structurally optimized to address the problems of ignition difficulties and uneven flame distribution caused by excessively rapid central airflow in existing technologies.

[0031] like Figure 1 and Figure 2 As shown, the H-shaped burner includes an intake pipe 1 that serves as the main gas inlet. The intake pipe 1 extends longitudinally. Gas enters the intake pipe 1 after passing through an external pipeline (not shown) and a control valve 10.

[0032] The main body of the burner consists of a transverse exhaust pipe 2 and two longitudinal exhaust pipes 3. The transverse exhaust pipe 2 is arranged transversely, and its middle part is fixedly connected to one end of the intake pipe 1, for example, by welding. The two longitudinal exhaust pipes 3 are parallel to each other and extend longitudinally. Their middle regions are respectively connected to the two ends of the transverse exhaust pipe 2, thus forming a stable "H"-shaped frame.

[0033] To achieve the combustion function, multiple flame outlet holes 4 are provided on the walls of both the transverse exhaust pipe 2 and the longitudinal exhaust pipe 3, arranged along their respective axial directions. In this preferred embodiment, as shown... Figure 1 As shown, these flame outlets 4 are all located on the top wall of each tube, which allows the flame to be sprayed vertically upwards, which is beneficial for the heat to be transferred upwards to the baking pan 9 above.

[0034] The core improvement in this embodiment lies in the central region of the transverse exhaust pipe 2. Please refer to the following section for details. Figure 2 A magnified view of a section. In this area, in addition to the conventional flame outlet 4, several flame penetration holes 5 and a fire baffle 6 have been innovatively added.

[0035] Specifically, the ignition hole 5 is located in the middle of the transverse gas outlet pipe 2 and is arranged side by side with the ignition hole 4 at the same location. The diameter of the ignition hole 5 can be designed to be smaller than that of the ignition hole 4. Its main function is to divert a portion of the gas in the central area where the gas pressure is highest, thereby reducing the gas flow velocity ejected from the adjacent ignition hole 4 and initially improving the gas flow distribution.

[0036] The fire baffle 6 is also welded or integrally formed in the middle of the transverse vent pipe 2 and located on one side of the fire hole 5. The physical height of the fire baffle 6 is designed to be higher than the opening height of the fire hole 5. This design is crucial, as it allows the fire baffle 6 to form an effective physical barrier.

[0037] To further optimize the ignition effect, the upper end of the fire baffle 6 is also provided with an inwardly bent portion 61. This bent portion 61 bends towards the centerline of the transverse vent pipe 2, forming a guiding slope.

[0038] In a preferred configuration, the fire baffle 6 and the air inlet pipe 1 are located on opposite sides of the middle of the transverse air outlet pipe 2. This configuration allows for separation of the ignition operation zone from the impact zone of the main airflow.

[0039] The working principle and beneficial effects of this embodiment are as follows:

[0040] When the user opens control valve 10, gas flows from inlet pipe 1 into the middle of horizontal outlet pipe 2. This is the point of airflow impact, where the pressure is highest. A portion of the gas is ejected from the main outlet port 4, while a smaller portion is ejected from the adjacent vent port 5.

[0041] During ignition, one end of one of the longitudinal gas outlet pipes 3 is ignited first, then the flame is directed to the transverse gas outlet pipe 2 and the other longitudinal gas outlet pipe 3. Because the flame penetration hole 5 shares the gas flow pressure, the gas flow velocity from this hole is relatively gentle, making it very easy to ignite and form a stable small flame (i.e., a guide flame). At this time, the flame deflector 6 not only effectively blocks the direct impact of the high-speed gas flow from the adjacent main flame outlet hole 4 on this small flame, thus preventing the flame from being instantly extinguished and greatly improving the success rate and reliability of ignition; it also guides the flame to the adjacent flame outlet hole 4.

[0042] In other words, once the flame in the ignition hole 5 is stably ignited, the bent portion 61 at the upper end of the baffle plate 6 begins to act as a "fire guide." It guides the flame formed by this stable flame towards the centerline, that is, towards the main exhaust hole 4, thereby safely and quickly igniting the main combustion gas ejected from the exhaust hole 4. At the same time, the blocking and guiding effect of the baffle plate 6 also ensures that the flame in the central area is no longer a single, excessively tall column of fire, but is dispersed, increasing the flame coverage area in the middle of the transverse exhaust pipe 2, making the flame distribution of the entire H-shaped burner more uniform and improving the heating effect.

[0043] Please see Figure 3 To achieve more convenient automated ignition, this burner can also be equipped with an ignition device 7. The ignition device 7 includes an ignition needle 71 and several ignition holes 72.

[0044] In one specific arrangement, the ignition holes 72 are located at one end of one of the longitudinal exhaust pipes 3, away from the transverse exhaust pipe 2. These ignition holes 72 can be arranged in a circle or half a circle around the circumference of the pipe body, starting from the first exhaust hole 4 at that end. The ignition needle 71 is fixed by a bracket so that its discharge tip is precisely adjacent to the area of ​​the ignition holes 72.

[0045] When ignition is required, the ignition device 7 is activated, and the ignition needle 71 generates an electric spark, which first ignites the gas flowing out from the ignition hole 72, forming an ignition flame. Since the ignition hole 72 is adjacent to the outlet hole 4, the ignition flame will immediately ignite all the outlet holes 4 on the longitudinal gas outlet pipe 3. The flame will then spread along the pipeline to the transverse gas outlet pipe 2 and another longitudinal gas outlet pipe 3, thereby achieving rapid and fully automatic ignition of the entire burner.

[0046] This utility model also discloses a gas-fired flatbed oven.

[0047] like Figure 3As shown, the gas-fired flat-plate stove includes a furnace body 8 for supporting and enclosing the various components. An H-shaped burner, as described above, is installed within the internal cavity of the furnace body 8. A baking tray 9 is detachably placed directly above the H-shaped burner. "Detachable" means that the baking tray 9 can be placed directly on the supporting edge of the furnace body 8, allowing the user to easily remove it for cleaning. A control valve 10 is connected to the inlet of the gas inlet pipe 1. This control valve 10 is typically integrated into the panel of the furnace body 8, allowing the user to manually rotate it to control the gas flow and flame size.

[0048] Because this gas-fired flat-plate oven uses the aforementioned innovative H-shaped burner, it inherits all the advantages of the burner, namely, simple and reliable ignition operation, high success rate, and uniform overall heating, which can effectively improve the cooking experience and food quality.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An H-shaped burner, characterized in that, include: The intake pipe (1) extends longitudinally; A transverse exhaust pipe (2) extends laterally, and the middle part of the transverse exhaust pipe (2) is connected to one end of the intake pipe (1). At least two longitudinal vent pipes (3) extend longitudinally, and the middle parts of the two longitudinal vent pipes (3) are respectively connected to the two ends of the transverse vent pipe (2), thereby forming an H-shaped structure together with the transverse vent pipe (2); Multiple flame outlets (4) are arranged along the axial direction of the transverse vent pipe (2) and the longitudinal vent pipe (3); Several fire holes (5) are provided in the middle of the transverse gas outlet pipe (2) and are arranged side by side with the fire outlet holes (4) thereon; Fire baffle (6) is located in the middle of the transverse vent pipe (2) and on one side of the fire hole (5); The height of the fire baffle (6) is greater than the height of the opening of the fire hole (5).

2. An H-shaped burner according to claim 1, characterized in that: The upper end of the fire baffle (6) is provided with a bent part (61), which bends toward the center line of the transverse vent pipe (2) to guide the flame.

3. An H-shaped burner according to claim 1, characterized in that: The fire baffle (6) and the air inlet pipe (1) are located on both sides of the middle of the transverse air outlet pipe (2).

4. An H-shaped burner according to claim 1, characterized in that: Multiple flame outlets (4) are provided on the top walls of the transverse vent pipe (2) and the longitudinal vent pipe (3).

5. An H-shaped burner according to claim 1, characterized in that: It also includes an ignition device (7), which includes an ignition needle (71) and a plurality of ignition holes (72). The ignition holes (72) are located at one end of one of the longitudinal gas outlet pipes (3) and are arranged circumferentially starting from the ignition hole (4). The ignition needle (71) is located adjacent to the ignition holes (72).

6. A gas-fired flat-plate oven, characterized in that: The furnace body (8) is provided with an H-shaped burner according to any one of claims 1-5, and also includes a baking tray (9) detachably connected above the H-shaped burner, and a control valve (10) connected to the air inlet pipe (1).

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