A lance head assembly on a flame projection lance

Abstract

The utility model relates to a spray gun head assembly on a flame gun, including casing, ignition switch, piezoelectric electron and the spray pipe of being equipped in the end part of casing, the spray pipe front end is equipped with the flame port, is equipped with the air inlet that communicates with the hollow portion in the spray pipe on the spray pipe side wall, its characterized in that, the integrated air inlet channel and the air outlet channel in the casing, the air outlet channel communicates with the hollow portion of spray pipe, the air outlet channel and air inlet channel intersection form the air source adjusting mouth, the flow regulator that adjusts the flow cross -section area of air source adjusting mouth is equipped on the casing, the side wall of casing is equipped with the detachable connection of cover plate, the cover plate is equipped with the decorative area for showing the pattern. Adopt the above technical scheme, the utility model provides a spray gun head assembly on a flame gun, sets up air inlet channel and air outlet channel directly on the casing, makes gas not easy to leak, and can change the cover plate of different patterns according to customer's preference.

Description

Technical Field

[0001] This utility model relates to the field of ignition device technology, and in particular to a flame gun head assembly. Background Technology

[0002] Flamethrowers are commonly used in homes or outdoors. They are a type of fire-breathing heating tool derived from existing butane gas canisters. Flamethrowers free the flame from a fixed position, making it easy to light campfires, grill food, cook, and boil water. They are also very portable.

[0003] Existing flame guns generally include a handle and a nozzle head mounted on the handle. The handle contains a gas chamber, and the nozzle head contains a piezoelectric device, an ignition switch, and a nozzle assembly. In use, pressing the ignition switch compresses the piezoelectric cap in the piezoelectric device. When the compression stroke reaches the ignition stroke, the piezoelectric device releases high-voltage electrical energy by striking the piezoelectric crystal with its internal hammer. This energy is then transmitted to the generator connected to the lead wire at the outlet of the nozzle assembly, where an electric spark is emitted. The released gas ignites upon encountering the electric spark. The nozzle head also contains an inner core and a flow rate adjustment knob. The inner core has an inlet channel and an outlet channel. Rotating the flow rate adjustment knob cuts off or opens the inlet and outlet channels, and adjusting the flow rate adjusts the gas flow to regulate the flame size.

[0004] However, the air inlet and outlet channels of existing flame guns are located on separate components, which are then installed into the flame gun head housing with screws. This can easily lead to loose components, gas leakage, and poor flow stability. In addition, in order to attract consumers, existing flame guns are processed with various patterns on the flame gun head. However, the patterns on the existing flame gun head cannot be changed. If multiple patterns are required, multiple flame guns need to be purchased. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the prior art. This utility model provides a flame gun head assembly, which directly sets the air inlet and outlet channels on the housing, making it difficult for gas to leak, and the cover plate with different patterns can be replaced according to customer preferences.

[0006] The technical solution of this utility model is as follows: A flame gun head assembly includes a housing, an ignition switch, a piezoelectric electronic component, and a nozzle located at the end of the housing. The nozzle has a flame nozzle at its front end and an air inlet on its side wall that communicates with the hollow part inside the nozzle. An air inlet channel and an air outlet channel are integrally formed inside the housing. The air outlet channel communicates with the hollow part of the nozzle. An air source regulating port is formed at the intersection of the air outlet channel and the air inlet channel. A flow regulator is provided on the housing to adjust the cross-sectional area of ​​the air source regulating port. A cover plate is provided on the side wall of the housing and is detachably connected to it. The cover plate has a decorative area for displaying patterns.

[0007] By adopting the above technical solution, the air outlet channel and the air inlet channel are integrally formed on the housing, which avoids the problem of gas leakage caused by poor stability after long-term use. The air inlet channel is connected to the air valve. At the same time, the housing of this application is provided with a detachable cover plate, so that different patterned cover plates can be replaced according to the user's needs, without having to replace the entire spray gun head or even the entire flame gun, thus avoiding waste.

[0008] Further features of this invention: The front end of the housing is integrally provided with a connecting pipe, the nozzle is sleeved outside the connecting pipe and extends to the front end of the connecting pipe, the connecting pipe is provided with a first air port and a second air port, a preheating copper pipe for conveying gas is connected between the first air port and the second air port, the two ends of the preheating copper pipe are respectively connected to the first air port and the second air port, the preheating copper pipe is bent and extended to the front end of the nozzle and is located on the outer periphery of the nozzle.

[0009] With the above-mentioned further design, the connecting pipe and the shell are integrally formed, saving installation steps, improving installation efficiency, and making the structure more robust and the gas flow more stable. The preheating copper pipe allows the gas inside the copper pipe to be preheated at the same time as the flame is emitted, improving the gas delivery effect, giving the gas higher energy when it is ejected, making it easier to ignite, and ensuring a stronger and more stable flame. The gas is also easier to mix with the fuel and achieve complete combustion, reducing unburned gas, reducing waste, and improving efficiency.

[0010] A further feature of this invention is that two cover plates are provided, respectively located on opposite side walls of the housing. The housing has an installation channel, and the cover plates have corresponding installation holes. When the cover plates are fastened to the housing, the installation holes and the installation channels are coaxially aligned and fixed with screws.

[0011] With the above-mentioned further design, two cover plates are added to further improve the aesthetics, and cover plates with different patterns can be installed on both sides of the housing. The two cover plates can be installed in the same mounting channel by screws.

[0012] A further improvement of this invention is as follows: the nozzle includes a separate air outlet pipe and a sleeve. The air outlet pipe is located inside the sleeve. The rear end of the air outlet pipe is inserted into a connecting pipe. The front end of the air outlet pipe is a flame nozzle. The connecting pipe is provided with a connecting boss. The sleeve is threadedly connected to the connecting boss.

[0013] Further configuration: A first guide groove is provided on the outer wall of the air outlet pipe. The first guide groove is arranged along the length direction of the air outlet pipe. The first air port and the second air port are located at the rear end of the first guide groove. The preheating copper pipe is located inside the first guide groove, and its front end extends out of the first guide groove.

[0014] With the above-mentioned further design, the first guide groove can position the preheating copper tube, making its structure stable and not easy to detach. The split-type spray pipe is easy to install, and the sleeve can cover the preheating copper tube, making the spray gun head more aesthetically pleasing. The sleeve is threadedly connected to the connecting pipe, making disassembly and assembly convenient and quick.

[0015] A further feature of this invention is as follows: the axis of the air outlet channel is parallel to the axis of the nozzle, the air inlet channel extends along the direction of the flame gun grip, a connecting channel is provided on the housing at the rear end of the air outlet channel, the connecting channel is located at the upper end of the air inlet channel and communicates with the air inlet channel, the flow regulator is threadedly connected to the housing, the front end of the flow regulator extends into the air outlet channel and faces the air source regulating port, and the rear end extends to the outside of the housing. Rotating the flow regulator causes it to slide axially relative to the housing to dynamically adjust the flow cross-sectional area of ​​the air source regulating port.

[0016] With the above-mentioned further design, the structure is reasonable and easy to operate. The front end of the flow regulator is tapered, which, in conjunction with the air source regulating port, enables precise flow control. The tapered regulating part is driven to move axially through the threaded connection, dynamically changing the flow cross-sectional area of ​​the air source regulating port.

[0017] A further feature of this invention is that: a mounting chamber is provided on the housing below the air outlet channel, the piezoelectric electron is located in the mounting chamber, the ignition switch is sleeved on the outside of the piezoelectric electron and partially exposed outside the mounting chamber, and the ignition switch can slide relative to the mounting chamber to trigger the piezoelectric electron.

[0018] Further configuration: The upper end face of the mounting chamber is provided with a through groove for the piezoelectric electron lead to pass through the housing. The other side wall of the gas outlet pipe is provided with a second guide groove communicating with the through groove. The first guide groove and the second guide groove are arranged opposite to each other. The lead is located in the second guide groove, and the front end of the lead is located on the side of the flame nozzle.

[0019] The above-mentioned further design facilitates operation. Pressing the ignition switch in the installation chamber drives the piezoelectric electronics, which generate an electric spark. The released gas ignites upon encountering the electric spark. The lead wire and the preheating copper tube are positioned opposite each other and do not interfere with each other. The second guide groove can position the lead wire, ensuring its stability and preventing deviation that could affect ignition. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model; Figure 2 This is a cross-sectional view of a specific embodiment of the present utility model; Figure 3 This is a cross-sectional view of the shell of a specific embodiment of the present utility model; Figure 4This is a schematic diagram of a specific embodiment of the present invention where the housing is not fitted with a cover plate; Figure 5 This is a schematic diagram of the cover plate according to a specific embodiment of the present utility model; Figure 6 This is a schematic diagram of the air outlet pipe in a specific embodiment of the present invention; Figure 7 This is a schematic diagram of the interior of the housing according to a specific embodiment of the present utility model; Figure 8 This is a schematic diagram of a ceramic cup and a nozzle according to a specific embodiment of the present invention; Figure 9 This is a schematic diagram of a preheating copper tube according to a specific embodiment of the present invention.

[0021] In the diagram, 1. Housing; 11. Inlet channel; 12. Outlet channel; 13. Air source regulating port; 14. Installation channel; 15. Connection channel; 16. Installation chamber; 161. Through groove; 2. Ignition switch; 3. Piezoelectric electronics; 31. Lead wire; 4. Nozzle; 41. Air inlet; 42. Outlet pipe; 421. First guide groove; 422. Second guide groove; 43. Sleeve; 44. Nozzle; 45. Positioning boss; 5. Flow regulator; 6. Cover plate; 61. Decorative area; 62. Mounting hole; 7. Connecting pipe; 71. First air port; 72. Second air port; 73. Connecting boss; 8. Preheating copper pipe; 9. Ceramic cup; 91. Mounting groove; 10. Snap ring. Detailed Implementation

[0022] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] It should be noted that all directional indicators (such as up, down, forward, backward, etc.) in the description of this utility model are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] like Figure 1-9 As shown, a flamethrower head assembly for a flamethrower includes a housing 1, an ignition switch 2, a piezoelectric electron 3, and a nozzle 4 located at the end of the housing 1. The nozzle 4 has a flame nozzle 44 at its front end and a ceramic cup 9 at its front end, which is pressed against the nozzle 4. The nozzle 4 has a positioning boss 45, and the ceramic cup 9 is pressed against the positioning boss 48. An air inlet 41 communicating with the hollow portion inside the nozzle 4 is opened on the side wall of the nozzle 4. An air inlet channel 11 and an air outlet channel 12 are integrally formed inside the housing 1. The air passage 12 communicates with the hollow part of the nozzle 4. An air source regulating port 13 is formed at the intersection of the air outlet 12 and the air inlet 11. A flow regulator 5 is provided on the housing 1 to adjust the cross-sectional area of ​​the air source regulating port 13. A cover plate 6 is detachably connected to the side wall of the housing 1. The cover plate 6 has a decorative area 61 for displaying patterns. Various animal patterns or landscape patterns can be printed on the decorative area 61. The shape and size of the cover plate 6 are not fixed and can be changed as needed. Channel 12 and air intake channel 11 are integrally formed on the housing 1 to avoid gas leakage caused by poor stability after long-term use. The air intake channel 11 is connected to the air valve. At the same time, the housing 1 of this application is provided with a detachable cover plate 6, so that cover plates 6 with different patterns can be replaced according to the user's needs, without replacing the entire spray gun head or even the entire flame gun, thus avoiding waste. Specifically, there are two cover plates 6, which are respectively provided on the opposite side walls of the housing 1. The housing 1 is provided with an installation channel 14, and the cover plate 6 is provided with a corresponding installation hole 62. When the cover plate 6 is fastened to the housing 1, the installation hole 62 is coaxially arranged with the installation channel 14 and fixed with screws. The installation hole 62 is located outside the decorative area 61, so as not to affect the aesthetics and continuity of the pattern. The two cover plates 6 further improve the aesthetics, and cover plates 6 with different patterns can be installed on both sides of the housing 1. The two cover plates 6 can be installed on the same installation channel 14 with screws, or a snap-on structure can be used for installation, as long as the cover plate can be detached and replaced.

[0027] The front end of the housing 1 is integrally provided with a connecting pipe 7. The nozzle 4 is sleeved on the connecting pipe 7 and extends to the front end of the connecting pipe 7. The connecting pipe 7 is provided with a first air port 71 and a second air port 72. A preheating copper pipe 8 for conveying gas is connected between the first air port 71 and the second air port 72. The two ends of the preheating copper pipe 8 are respectively connected to the first air port 71 and the second air port 72. The preheating copper pipe 8 is bent and extends to the front end of the nozzle 4 and is located on the outer periphery of the flame nozzle 44. The connecting pipe 7 and the housing 1 are integrally formed, which saves installation steps, improves installation efficiency, and makes the structure more robust and the gas flow more stable. The setting of the preheating copper pipe 8 allows the gas in the copper pipe to be preheated at the same time as the flame is emitted, which improves the gas conveying effect, makes the gas have higher energy when it is emitted, and thus makes it easier to ignite, and ensures that the flame is stronger and more stable. The gas is easier to mix with the fuel and undergo complete combustion, reducing the amount of unburned gas, reducing waste, and improving efficiency.

[0028] The nozzle 4 includes a separate air outlet pipe 42 and a sleeve 43. Both the air outlet pipe 42 and the sleeve 43 are provided with air inlets 41. The air outlet pipe 42 is located inside the sleeve 43. The rear end of the air outlet pipe 42 is inserted into a connecting pipe 7, and the front end of the air outlet pipe 42 is a flame nozzle 44. The connecting pipe 7 is provided with a connecting boss 73, and the sleeve 43 is threadedly connected to the connecting boss 73. A first guide groove 421 is provided on the outer wall of the air outlet pipe 42, and the first guide groove 421 extends along the air outlet pipe 4... The length direction of the nozzle 2 is set, with the first air port 71 and the second air port 72 located at the rear end of the first guide groove 421. The preheating copper tube 8 is partially located inside the first guide groove 421, and its front end extends out of the first guide groove 421. The first guide groove 421 can position the preheating copper tube 8, making its structure stable and not easy to detach. The split-type nozzle 4 is easy to install. The sleeve 43 can cover the preheating copper tube 8, making the nozzle head more aesthetically pleasing. The sleeve 43 is threadedly connected to the connecting pipe 7, making disassembly and assembly convenient and quick. The housing 1 has a mounting chamber 16 located below the air outlet channel 12. The piezoelectric electron 3 is located inside the mounting chamber 16. The ignition switch 2 is sleeved on the outside of the piezoelectric electron 3 and partially exposed outside the mounting chamber 16. The ignition switch 2 can slide relative to the mounting chamber 16 to trigger the piezoelectric electron 3. The upper end face of the mounting chamber 16 has a through groove 161 for the lead wire 31 of the piezoelectric electron 3 to pass through the housing 1. The other side wall of the air outlet pipe 42 has a second guide groove 422 communicating with the through groove 161. The first guide groove 421 and the second guide groove 422 are arranged opposite to each other. The lead wire 31 is located inside the second guide groove 422, and the front end of the lead wire 31 is located on the side of the flame nozzle. A retaining ring 10 is sleeved around the outer periphery of the nozzle 4. The preheating copper tube 8 and the lead wire 31 are located inside the retaining ring 10. The retaining ring 10 is used to install and position the preheating copper tube and the lead wire, ensuring structural stability. An installation groove 91 is provided on the ceramic cup 9 at the corresponding guide groove position. The end of the lead wire extends into the installation groove. The front end of the preheating copper tube passes through the installation groove and is located on the front side of the ceramic cup for easy operation. Pressing the ignition switch 2 into the installation chamber 16 will drive the piezoelectric electron 3, and the lead wire 31 will generate an electric spark. The released gas will ignite when it encounters the electric spark. The lead wire 31 and the preheating copper tube 8 are set opposite each other and do not affect each other. The second guide groove 422 can position the lead wire 31 to ensure its stability and prevent displacement, which would affect ignition.

[0029] The axis of the exhaust channel 12 is parallel to the axis of the nozzle 4. The intake channel 11 extends along the direction of the flame gun grip. A connecting channel 15 is provided on the housing 1 at the rear end of the exhaust channel 12. The connecting channel 15 is located at the upper end of the intake channel 11 and communicates with the intake channel 11. The flow regulator 5 is threadedly connected to the housing 1. The front end of the flow regulator 5 extends into the exhaust channel 12 and faces the air source regulating port 13. The rear end extends outside the housing 1. Rotating the flow regulator 5 causes it to slide axially relative to the housing 1 to dynamically adjust the flow cross-sectional area of ​​the air source regulating port 13. The structure is reasonable and easy to operate. The front end of the flow regulator 5 is tapered. The cooperation with the air source regulating port 13 achieves precise flow control. The tapered regulating part is driven to move axially through the threaded cooperation, which dynamically changes the flow cross-sectional area of ​​the air source regulating port 13.

Claims

1. A flamethrower head assembly for a flamethrower, comprising a housing (1), an ignition switch (2), a piezoelectric electron (3), and a nozzle (4) disposed at the end of the housing (1), wherein the nozzle (4) has a flame nozzle (44) at its front end, and an air inlet (41) communicating with the hollow portion inside the nozzle (4) is provided on the side wall of the nozzle (4), characterized in that, The housing (1) is integrally formed with an air inlet channel (11) and an air outlet channel (12). The air outlet channel (12) is connected to the hollow part of the nozzle (4). The intersection of the air outlet channel (12) and the air inlet channel (11) forms an air source regulating port (13). The housing (1) is provided with a flow regulator (5) for adjusting the flow cross-sectional area of ​​the air source regulating port (13). The side wall of the housing (1) is provided with a cover plate (6) that is detachably connected to it. The cover plate (6) is provided with a decorative area (61) for displaying patterns.

2. The flamethrower head assembly on the flamethrower according to claim 1, characterized in that, The front end of the housing (1) is integrally provided with a connecting pipe (7). The nozzle (4) is sleeved on the connecting pipe (7) and extends to the front end of the connecting pipe (7). The connecting pipe (7) is provided with a first air port (71) and a second air port (72). A preheating copper pipe (8) for conveying gas is connected between the first air port (71) and the second air port (72). The two ends of the preheating copper pipe (8) are respectively connected to the first air port (71) and the second air port (72). The preheating copper pipe (8) is bent and extends to the front end of the nozzle (4) and is located on the outer periphery of the flame nozzle (44).

3. The flamethrower head assembly on the flamethrower according to claim 1 or 2, characterized in that, Two cover plates (6) are provided, respectively on opposite side walls of the housing (1). The housing (1) is provided with an installation channel (14), and the cover plate (6) is provided with a corresponding installation hole (62). When the cover plate (6) is fastened to the housing (1), the installation hole (62) and the installation channel (14) are coaxially arranged and fixed by screws. The installation hole (62) is located outside the decorative area (61).

4. The flamethrower head assembly on the flamethrower according to claim 2, characterized in that, The nozzle (4) includes a separate air outlet pipe (42) and a sleeve (43). The air outlet pipe (42) is located inside the sleeve (43). The rear end of the air outlet pipe (42) is inserted into the connecting pipe (7). The front end of the air outlet pipe (42) is a flame nozzle (44). The connecting pipe (7) is provided with a connecting boss (73). The sleeve (43) is threadedly connected to the connecting boss (73).

5. The flamethrower head assembly on the flamethrower according to claim 4, characterized in that, The outer wall of the air outlet pipe (42) is provided with a first guide groove (421). The first guide groove (421) is arranged along the length direction of the air outlet pipe (42). The first air port (71) and the second air port (72) are located at the rear end of the first guide groove (421). The preheating copper pipe (8) is partially located inside the first guide groove (421) and its front end extends out of the first guide groove (421).

6. The flamethrower head assembly on the flamethrower according to claim 1 or 2, characterized in that, The axis of the exhaust channel (12) is parallel to the axis of the nozzle (4). The intake channel (11) extends along the direction of the flame gun grip. The housing (1) is provided with a connecting channel (15) at the rear end of the exhaust channel (12). The connecting channel (15) is located at the upper end of the intake channel (11) and communicates with the intake channel (11). The flow regulator (5) is threadedly connected to the housing (1). The front end of the flow regulator (5) extends into the exhaust channel (12) and faces the air source regulating port (13). The rear end extends to the outside of the housing (1). Rotating the flow regulator (5) makes it slide axially relative to the housing (1) to dynamically adjust the flow cross-sectional area of ​​the air source regulating port (13).

7. The flamethrower head assembly on the flamethrower according to claim 5, characterized in that, The housing (1) has an installation chamber (16) located below the air outlet channel (12). The piezoelectric electron (3) is located inside the installation chamber (16). The ignition switch (2) is sleeved on the outside of the piezoelectric electron (3) and partially exposed outside the installation chamber (16). The ignition switch (2) can slide relative to the installation chamber (16) to trigger the piezoelectric electron (3).

8. The flamethrower head assembly on the flamethrower according to claim 7, characterized in that, The upper end face of the installation chamber (16) is provided with a through groove (161) for the lead wire (31) of the piezoelectric electron (3) to pass through the outer side of the housing (1). The other side wall of the gas outlet pipe (42) is provided with a second guide groove (422) that communicates with the through groove (161). The first guide groove (421) and the second guide groove (422) are arranged opposite to each other. The lead wire (31) is located in the second guide groove (422), and the front end of the lead wire (31) is located on the side of the flame nozzle.

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