Integrated kindling tube and furnace end thereof

Abstract

The utility model relates to the technical field of gas furnace ends, in particular to an integrated kindling tube and a furnace end thereof, the integrated kindling tube comprises an outer tube, an inner tube is arranged in the outer tube in a penetrating mode, a premixing gas channel is formed between the outer wall of the inner tube and the inner wall of the outer tube, a cover plate is installed at the upper end of the premixing gas channel in a covering mode, and a plurality of gas outlet holes are formed in the cover plate. An ignition induction needle unit is arranged in the inner pipe in a penetrating manner, so that the upper end of the ignition induction needle unit is positioned above the plurality of air outlet holes; the integrated kindling tube and the furnace end thereof can prevent the induction failure of the ignition induction needle unit and prevent the phenomenon that a flameout protection switch is started accidentally, and the kindling is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of gas burner heads, in particular to an integrated fire starter tube and a burner head thereof. Background Art

[0002] At present, commercial burners usually adopt the side fire structure, which is mainly used for quick ignition next time when the burner is temporarily turned off. Figure 7 As shown, the ignition needle 18 and the fire detection needle 19 in the prior art are respectively located on both sides above the fire tube 20. This structure easily leads to a relatively large space in the fire cavity, and an output port is provided on the side of the upper end of the fire tube 20, and the gas is emitted to the surrounding areas from the output port on the side. When the flow rate is large, the fire is easily emitted from the fire cavity to the outside, causing the fire to be away from the fire detection needle 19, so that the fire detection needle 19 cannot detect the fire, thereby accidentally starting the flameout protection switch, causing the next burner to fail to ignite, and the need to re-ignite; and when the flow rate is small, the gas output is insufficient, and when it is emitted to the surrounding areas, the fire is prone to instability, which makes the fire easy to go out, thereby activating the flameout protection switch. Utility Model Content

[0003] In order to overcome the defects of the prior art, the utility model provides an integrated fire starter tube and a burner head thereof, aiming to solve the above problems.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an integrated fire starter tube, comprising an outer tube, an inner tube is passed through the outer tube, a premixed air passage is formed between the outer wall of the inner tube and the inner wall of the outer tube, the upper end cover of the premixed air passage is provided with a cover plate, a plurality of air outlet holes are opened on the cover plate, an ignition sensing needle unit is passed through the inner tube, so that the upper end of the ignition sensing needle unit is located above the plurality of air outlet holes.

[0005] The beneficial effect of the present invention is that the ignition sensing needle unit is integrated into the inner tube, and the inner tube is installed in the outer tube, so that the premixed gas for the fire flows in the premixed gas channel between the inner tube and the outer tube and is output from the air outlet on the cover plate. The overall structure is more compact and occupies a smaller area. Moreover, since the upper end of the ignition sensing needle unit and the air outlet are corresponding to each other up and down, the output premixed gas can be ignited at the upper end position of the ignition sensing needle unit, so that the flame can act on the ignition sensing needle unit. Regardless of whether the premixed gas has a large flow rate or a small flow rate, the ignition sensing needle unit can be prevented from sensing failure, and the flameout protection switch can be prevented from being accidentally started.

[0006] Furthermore, the ignition sensing needle unit includes a ceramic tube, which is passed through the inner tube. A convex ring is provided at the upper end of the ceramic tube, and the convex ring is located at the upper end of the cover plate. The sensing needle and the ignition needle are installed in the ceramic tube, and the upper ends of the sensing needle and the ignition needle extend above the convex ring.

[0007] After adopting the above-mentioned further structure, by installing both the sensing needle and the ignition needle in the ceramic tube, and installing the sensing needle and the ignition needle in the inner tube through the ceramic tube, the ignition sensing needle unit is integrated into the fire tube, so that the gas output from multiple air outlets can ignite upward and act on the sensing needle above.

[0008] Furthermore, a tube hole is opened on the outer wall of the lower end of the outer tube, a fire starter air inlet pipe is installed in the tube hole, and a premixed gas inlet pipe is installed on the fire starter air inlet pipe.

[0009] After adopting the above further structure, the premixed gas is input through the premixed gas inlet pipe, so that the premixed gas enters the premixed gas channel and is then output from the gas outlet at the upper end, so that the fire is retained and acts on the sensing needle.

[0010] Furthermore, a sealing ring is sleeved on the lower end of the inner tube to seal the lower end of the premixing air channel.

[0011] With the above-mentioned further structure, the sealing ring can prevent the premixed gas from leaking from the lower end of the premixed gas channel.

[0012] The utility model also discloses a burner head, comprising the above-mentioned integrated fire starter tube, the burner head also comprising a furnace body, wherein a combustion chamber is provided in the furnace body, the integrated fire starter tube is penetrated and installed in the furnace body so that a cover plate is provided on the upper surface of the furnace body, the cover plate is located on one side of the combustion chamber, and a fire starter cover is provided above the cover plate.

[0013] By setting the cover plate on the upper surface of the furnace body, the premixed gas is sprayed into the fire cover, so that the fire is retained inside the fire cover, making the fire stable. At the same time, the fire can act on the sensor needle to prevent accidental activation of the flameout protection switch.

[0014] Furthermore, a circular cavity is provided in the fire starter cover, an opening is provided on a side of the circular cavity close to the combustion chamber, and the cover plate is located in the circular cavity.

[0015] After adopting the above-mentioned further structure, the next ignition of the combustion chamber can be ignited through the opening, which makes ignition convenient.

[0016] Furthermore, an extension baffle is provided above the opening, and the extension baffle and the fire starter cover are an integrated structure, and the inner upper end of the circular cavity is higher than the lower end surface of the extension baffle.

[0017] After adopting the above-mentioned further structure, the premixed gas is sprayed upward and first sprayed toward the inner upper end of the circular cavity. Since the lower end surface of the extended baffle is lower than the inner upper end of the circular cavity, the relative position of the opening is relatively low. The premixed gas can be retained and ignited in the space at the inner upper end of the circular cavity, thereby retaining the fire and preventing it from dissipating outward. Even with a small flow output, the fire can be retained, making the fire more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the integrated fire starter tube of the present utility model.

[0019] Figure 2 This is a schematic diagram of the explosion structure of the integrated fire starter tube of the present utility model.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the burner head of the present invention.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the furnace body and the fire cover.

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the fire cover.

[0023] Figure 6 Schematic diagram of the internal structure of the fire cover.

[0024] Figure 7 It is a structural diagram of an ignition needle and a fire detection needle in the prior art.

[0025] In the figure: outer tube 1, inner tube 2, tube hole 3, spark inlet pipe 4, premixed gas inlet pipe 5, cover plate 6, air outlet 7, ceramic tube 8, convex ring 9, induction needle 10, ignition needle 11, sealing ring 12, combustion chamber 13, spark cover 14, circular cavity 15, opening 16, and extended baffle 17. DETAILED DESCRIPTION

[0026] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0027] Combine Figures 1 to 6The integrated fire starter tube shown in the figure comprises an outer tube 1, an inner tube 2 is passed through the outer tube 1, a premixed gas passage is formed between the outer wall of the inner tube 2 and the inner wall of the outer tube 1, the upper end of the premixed gas passage is covered with a cover plate 6, a plurality of gas outlet holes 7 are opened on the cover plate 6, an ignition sensing needle unit is passed through the inner tube 2, so that the upper end of the ignition sensing needle unit is located above the plurality of gas outlet holes 7; in this embodiment, the ignition sensing needle unit is integrated into the inner tube 2, and the inner tube 2 is installed in the outer tube 1, so that the premixed gas for the fire starter is in the inner tube 2 and the outer tube 1, and is output from the air outlet 7 on the cover plate 6. The overall structure is more compact and occupies a smaller area. Moreover, since the upper end of the ignition sensing needle unit corresponds to the air outlet 7 in an upper and lower manner, the output premixed gas can be ignited at the upper end of the ignition sensing needle unit, so that the flame can act on the ignition sensing needle unit. Regardless of whether the premixed gas has a large flow rate or a small flow rate, the ignition sensing needle unit can be prevented from failing to sense and the flameout protection switch can be prevented from being accidentally activated.

[0028] The ignition sensing needle unit of this embodiment includes a ceramic tube 8, which is inserted into the inner tube 2. A convex ring 9 is provided at the upper end of the ceramic tube 8, which is located at the upper end of the cover plate 6. A sensing needle 10 and an ignition needle 11 are inserted into the ceramic tube 8, and the upper ends of the sensing needle 10 and the ignition needle 11 extend above the convex ring 9. By installing both the sensing needle 10 and the ignition needle 11 in the ceramic tube 8 and then installing the sensing needle 10 and the ignition needle 11 in the inner tube 2 through the ceramic tube 8, the ignition sensing needle unit is integrated into the fire starter tube, so that the gas output from the multiple gas outlets 7 can ignite upward and act on the sensing needle 10 above.

[0029] Among them, a tube hole 3 is opened on the outer wall of the lower end of the outer tube 1, and a fire starter air inlet pipe 4 is installed in the tube hole 3. A premixed gas inlet pipe 5 is installed on the fire starter air inlet pipe 4. The premixed gas is input through the premixed gas inlet pipe 5, so that the premixed gas enters the premixed gas duct and is then output from the air outlet 7 at the upper end, so that the fire starter is retained and acts on the sensing needle 10.

[0030] It should be noted that in this embodiment, a sealing ring 12 is sleeved on the lower end of the inner tube 2 to seal the lower end of the premixed gas passage. In some embodiments, the sealing ring can be a metal ring that is sealed by circumferential welding, thereby securely connecting the lower ends of the outer tube 1 and the inner tube 2. The sealing ring 12 prevents leakage of the premixed gas from the lower end of the premixed gas passage.

[0031] The integrated fire starter tube of this embodiment can be installed on the burner head, which includes a burner body, a combustion chamber 13 is provided in the burner body, and the integrated fire starter tube is installed in the burner body so that the cover plate 6 is arranged on the upper surface of the burner body, the cover plate 6 is located on one side of the combustion chamber 13, and a fire starter cover 14 is provided above the cover plate 6. By arranging the cover plate 6 on the upper surface of the burner body, the premixed gas is sprayed into the fire starter cover 14, so that the fire starter is retained inside the fire starter cover 14, making the fire starter stable. At the same time, the fire starter can act on the sensing needle 10 to prevent the flameout protection switch from being accidentally activated.

[0032] In this embodiment, a circular cavity 15 is provided in the fire starter cover 14, and an opening 16 is provided on the side of the circular cavity 15 close to the combustion chamber 13. The cover plate 6 is located in the circular cavity 15; the combustion chamber 13 can be ignited for the next ignition through the opening 16, making ignition convenient.

[0033] An extension baffle 17 is provided above the opening 16. The extension baffle 17 and the fire starter cover 14 are integrally formed. The inner upper end of the circular cavity 15 is higher than the lower end surface of the extension baffle 17. This allows the premixed gas to be ejected upwards and firstly toward the inner upper end of the circular cavity 15. Since the lower end surface of the extension baffle 17 is lower than the inner upper end of the circular cavity 15, the relative position of the opening 16 is relatively low. The premixed gas can be retained and ignited in the space at the inner upper end of the circular cavity 15, thereby preserving the fire starter and preventing it from dissipating outwards. Even at a low flow rate, the fire starter can be retained, making the fire starter more stable.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. An integrated fire starter tube, comprising an outer tube (1), characterized in that: An inner tube (2) is inserted into the outer tube (1), a premixed air passage is formed between the outer wall of the inner tube (2) and the inner wall of the outer tube (1), an upper end cover of the premixed air passage is provided with a cover plate (6), a plurality of air outlet holes (7) are provided on the cover plate (6), and an ignition sensing needle unit is inserted into the inner tube (2), so that the upper end of the ignition sensing needle unit is located above the plurality of air outlet holes (7).

2. The integrated fire starter tube according to claim 1, characterized in that: The ignition sensing needle unit comprises a ceramic tube (8), the ceramic tube (8) being passed through the inner tube (2), a convex ring (9) being provided at the upper end of the ceramic tube (8), the convex ring (9) being located at the upper end of the cover plate (6), a sensing needle (10) and an ignition needle (11) being passed through and installed in the ceramic tube (8), the upper ends of the sensing needle (10) and the ignition needle (11) both extending above the convex ring (9).

3. The integrated fire starter tube according to claim 1, characterized in that: A tube hole (3) is provided on the outer wall of the lower end of the outer tube (1), a fire starter air inlet pipe (4) is installed in the tube hole (3), and a premixed gas inlet pipe (5) is installed on the fire starter air inlet pipe (4).

4. The integrated fire starter tube according to claim 1, characterized in that: The lower end of the inner tube (2) is sleeved with a sealing ring (12) to seal the lower end of the premixing air passage.

5. A burner head comprising the integrated fire starter tube according to any one of claims 1 to 4, characterized in that: The burner head further comprises a furnace body, wherein a combustion chamber (13) is provided in the furnace body, and the integrated fire starter pipe is installed in the furnace body so that the cover plate (6) is provided on the upper surface of the furnace body, the cover plate (6) is located on one side of the combustion chamber (13), and a fire starter cover (14) is provided above the cover plate (6).

6. A burner according to claim 5, characterized in that: A circular cavity (15) is provided in the fire starter cover (14), an opening (16) is provided on one side of the circular cavity (15) close to the combustion chamber (13), and the cover plate (6) is located in the circular cavity (15).

7. A burner according to claim 6, characterized in that: An extension baffle (17) is provided above the opening (16); the extension baffle (17) and the fire starter cover (14) are an integrated structure; the inner upper end of the circular cavity (15) is higher than the lower end surface of the extension baffle (17).

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