A flame projection head for a flame projection gun

Abstract

The utility model relates to a kind of spray flame head on flame gun, including shell, nozzle assembly being arranged on shell, piezoelectric electronics and ignition switch, the nozzle assembly includes air pipe, ceramic cup and sleeve, the sleeve one end is installed on shell, the other end of sleeve is equipped with the installation chamber of open setting, the ceramic cup is located in installation chamber, first through-hole and first installation channel are equipped on the ceramic cup, second through-hole and second installation channel are equipped on the sleeve, second through-hole is correspondingly set with first through-hole, the air pipe end portion sequentially passes through second through-hole and first through-hole, and is resisted and touches on ceramic cup bottom wall, first installation channel and second installation channel are communicated.Using the above technical solution, the utility model provides a kind of spray flame head on flame gun, ceramic cup is fixedly installed using air pipe, does not need other structure to install and fix, so that spray flame head overall structure is simple, easy to install, and air pipe and inner core are set apart, and heat insulation effect is good.

Description

Technical Field

[0001] This utility model relates to the field of flamethrower technology, and in particular to a flamethrower head for a flamethrower. 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 flamethrowers generally include a grip and a flame head mounted on the grip. The grip contains a gas chamber, and the flame head contains a piezoelectric device, an ignition switch, and a nozzle device. 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 device, where an electric spark is emitted. The released gas ignites upon encountering the electric spark. The flame head also contains an inner core and a flow rate adjustment knob. The inner core has an air inlet channel and an air outlet channel. Rotating the flow rate adjustment knob cuts off or opens the air inlet and outlet channels, and adjusting the flow rate adjusts the flame size.

[0004] The existing nozzle device includes an outlet pipe, a ceramic cup, and a protective sleeve. The ceramic cup is placed inside the protective sleeve and fixed inside the protective sleeve by fasteners. One end of the outlet pipe is located inside the ceramic cup, and the other end is connected to the inner core. The lead wire of the piezoelectric device extends into the ceramic cup and is located on one side of the outlet pipe. However, the existing nozzle device has a complex structure, is very inconvenient to install, and is not easy to repair if damaged, sometimes requiring complete replacement. Furthermore, the outlet pipe and the inner core are integrally molded, resulting in poor heat insulation. 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 head for a flame gun, which uses an exhaust pipe to fix the ceramic cup without the need for other structures for installation and fixation. This makes the overall structure of the flame head simple and easy to install. In addition, the exhaust pipe and the inner core are set separately, which has a good heat insulation effect.

[0006] The technical solution of this utility model is as follows: A flame head for a flame gun includes a housing, a nozzle assembly disposed on the housing, a piezoelectric electron, and an ignition switch. The nozzle assembly includes an exhaust pipe, a ceramic cup, and a sleeve. One end of the sleeve is installed on the housing, and the other end of the sleeve has an open mounting chamber. The ceramic cup is located in the mounting chamber. The ceramic cup has a first through hole and a first mounting channel. The sleeve has a second through hole and a second mounting channel. The second through hole corresponds to the first through hole. The end of the exhaust pipe passes through the second through hole and the first through hole in sequence and abuts against the bottom wall of the ceramic cup. The first mounting channel communicates with the second mounting channel. The lead wire of the piezoelectric electron passes through the second mounting channel and the first mounting channel, and the end of the lead wire is exposed outside the first mounting channel and located on one side of the exhaust pipe.

[0007] Using the above technical solution, the installation structure between the ceramic cup and the gas outlet pipe is simple, but it does not affect the stability between them. The ceramic cup is pressed into the installation chamber through the gas outlet pipe, which prevents the ceramic cup from falling off and effectively protects other components and prevents overheating. The lead wire of the piezoelectric electron is located in the installation channel, which can position and protect it. The exposed end allows the piezoelectric electron to generate a spark at the end of the lead wire after being pressed by the ignition switch. The gas flowing out of the gas outlet pipe collides with the spark to achieve ignition.

[0008] A further feature of this invention is that a positioning block is provided on the bottom wall of the installation chamber, and a positioning groove is provided on the outer bottom surface of the ceramic cup. When the ceramic cup is installed in the installation chamber, the positioning groove cooperates with the positioning block.

[0009] With the above-mentioned further settings, the installation position of the ceramic cup can be determined during installation, making installation more convenient. At the same time, the ceramic cup can be positioned to prevent it from shaking in the installation chamber.

[0010] A further feature of this invention is that the housing is also provided with an inner core and an adjustment switch. The inner core includes an air inlet channel, an air outlet channel, and a third mounting channel located between the air inlet channel and the air outlet channel. A valve stem is connected to the adjustment switch. The valve stem is threaded into the third mounting channel to control the opening and closing of the air inlet channel and the air outlet channel. The end of the air outlet pipe is separated from the inner core.

[0011] With the above-mentioned further settings, the gas flow rate can be adjusted and the flow can be controlled by rotating the valve stem through the adjustment switch. The end of the gas outlet pipe is separated from the inner core, which has a good heat insulation effect and prevents the flame temperature from affecting the inner core during use.

[0012] A further improvement of this invention is that the sleeve is made of zinc alloy.

[0013] The above-mentioned further design reduces the overall weight of the flamethrower, making it easier to operate and carry. It also has good casting properties, allowing it to be easily molded into complex shapes. Furthermore, it has good thermal conductivity, enabling faster heat dissipation and reducing the risk of overheating.

[0014] A further feature of this invention is as follows: a first air port is provided on the third installation channel, and a second air port is provided on the air outlet channel. 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 extends into the ceramic cup and is located on the other side of the air outlet pipe. The sleeve and the ceramic cup are provided with through grooves for the preheating copper pipe to pass through.

[0015] By adopting the above-mentioned further settings, the gas inside the copper tube can be preheated at the same time as the flame is emitted, which improves the gas delivery effect, makes the gas have higher energy when it is ejected, and thus makes it easier to ignite. It also ensures that the flame is stronger and more stable, and the gas mixes more easily with the fuel and undergoes complete combustion, reducing unburned gas, reducing waste, and improving efficiency.

[0016] A further feature of this invention is that the sleeve has an opening in the middle, and one end of the sleeve that connects to the housing has a connecting hole. A connecting post is provided on the inner side of the housing, and the connecting post is inserted into the connecting hole to install the sleeve onto the housing.

[0017] By adopting the above-mentioned further settings, the opening setting can guide airflow, control the size and direction of the flame, help optimize combustion efficiency, stabilize the flame and have a certain jet force, increase the mixing efficiency of air and fuel, help the flame burn better, provide a stronger jet effect, and at the same time, the connection structure between the sleeve and the shell is simple, easy to install, and has good stability.

[0018] A further feature of this invention is as follows: a mounting groove is provided on one side of the inner core inside the housing, the piezoelectric electron is located in the mounting groove, the preheating copper tube is located between the piezoelectric electron and the inner core, the lead wire of the piezoelectric electron extends around the inner core to the second mounting channel, and the ignition switch is slidably mounted on the housing and abuts against the contact end of the piezoelectric electron to trigger the piezoelectric electron.

[0019] With the above-mentioned further design, the structural layout is reasonable, making the internal structure of the housing compact, and each component does not affect the operation of the others. The piezoelectric electronics are installed in the mounting slot, making the structure stable and having good compatibility with the ignition switch.

[0020] A further feature of this invention is that the housing is provided with a guide plate, and the ignition switch is provided with a guide groove, wherein the guide plate and the guide groove are guided and slidably engaged.

[0021] The above-mentioned further design serves as a guide for sliding, making the structure stable when the ignition switch slides, and driving the piezoelectric electronics more stably. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure 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 an internal schematic diagram of a specific embodiment of the present utility model; Figure 4 This is a schematic diagram of the sleeve according to a specific embodiment of the present utility model; Figure 5 This is a schematic diagram of a ceramic cup according to a specific embodiment of the present invention; Figure 6 This is a cross-sectional view of the inner core of a specific embodiment of the present utility model; Figure 7 This is a schematic diagram of the inner core and the air outlet pipe in a specific embodiment of the present invention; Figure 8 This is a schematic diagram of an ignition switch according to a specific embodiment of the present invention; Figure 9 This is a schematic diagram of the nozzle assembly in a specific embodiment of the present invention.

[0023] In the diagram, 1. Housing; 11. Connecting post; 12. Mounting groove; 13. Guide plate; 2. Nozzle assembly; 21. Air outlet pipe; 22. Ceramic cup; 221. First through hole; 222. First mounting channel; 223. Positioning groove; 23. Sleeve; 231. Mounting chamber; 232. Second through hole; 233. Second mounting channel; 234. Connecting hole; 235. Positioning block; 3. Piezoelectric electronics; 31. Lead wire; 4. Ignition switch; 41. Guide groove; 5. Inner core; 51. Air inlet channel; 52. Air outlet channel; 521. Second air port; 53. Third mounting channel; 531. First air port; 6. Adjusting switch; 61. Valve stem; 7. Connector; 71. Flow channel; 8. Preheating copper pipe. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] like Figure 1-9As shown, a flamethrower head for a flamethrower includes a housing 1, a nozzle assembly 2 mounted on the housing 1, a piezoelectric electron 3, and an ignition switch 4. The nozzle assembly 2 includes an exhaust pipe 21, a ceramic cup 22, and a sleeve 23. One end of the sleeve 23 is mounted on the housing 1, and the other end of the sleeve 23 has an open mounting chamber 231. The ceramic cup 22 is located inside the mounting chamber 231. The ceramic cup 22 has a first through hole 221 and a first mounting channel 222. The sleeve 23 has a second through hole 232 and a second mounting channel 233. The second through hole 232 corresponds to the first through hole 221. The end of the exhaust pipe 21 passes through the second through hole 232 and the first through hole 221 in sequence and abuts against the bottom wall of the ceramic cup 22. The mounting channel 222 is connected to the second mounting channel 233. The lead wire 31 of the piezoelectric electron 3 passes through the second mounting channel 233 and the first mounting channel 222, and the end of the lead wire 31 is exposed outside the first mounting channel 222 and located on one side of the gas outlet pipe 21. The installation structure between the ceramic cup 22 and the gas outlet pipe 21 is simple, but it does not affect the stability between them. The ceramic cup 22 is pressed into the mounting chamber 231 through the gas outlet pipe 21 to prevent the ceramic cup 22 from falling off, effectively protecting other components and preventing overheating. The lead wire 31 of the piezoelectric electron 3 is located in the mounting channel, which can position and protect it. The exposed end allows the lead wire 31 to emit a spark after the piezoelectric electron 3 is pressed by the ignition switch 4. The gas flowing out of the gas outlet pipe 21 collides with the spark to achieve ignition. The sleeve 23 is made of zinc alloy, which reduces the overall weight of the flame gun, making it easier to operate and carry. It has good casting properties, allowing it to be easily molded into complex shapes. It also has good thermal conductivity, enabling faster heat dissipation and reducing the risk of overheating. The sleeve 23 has an opening in the middle, exposing part of the air outlet pipe 21. The end of the sleeve 23 that connects to the housing 1 has a connecting hole 234. The housing 1 has a connecting post 11 on its inner side, which is inserted into the connecting hole 234 to install the sleeve 23 onto the housing 1. To further improve the firmness, a screw can be inserted into the connecting post. The opening can guide airflow, control the size and direction of the flame, help optimize combustion efficiency, stabilize the flame and give it a certain spray force, increase the mixing efficiency of air and fuel, and contribute to better flame combustion, providing a stronger spray effect. At the same time, the connection structure between the sleeve 23 and the housing 1 is simple, easy to install, and has good stability.

[0029] The bottom wall of the installation chamber 231 is provided with a positioning block 235, and the outer bottom surface of the ceramic cup 22 is provided with a positioning groove 223. When the ceramic cup 22 is installed in the installation chamber 231, the positioning groove 223 cooperates with the positioning block 235 to determine the installation position of the ceramic cup 22 during installation, making installation more convenient. At the same time, the ceramic cup 22 can be positioned to prevent it from shaking in the installation chamber 231.

[0030] The housing 1 is also provided with an inner core 5 and an adjusting switch 6. The inner core 5 includes an air inlet channel 51, an air outlet channel 52, and a third mounting channel 53 located between the air inlet channel 51 and the air outlet channel 52. A valve stem 61 is connected to the adjusting switch 6. The valve stem 61 is threaded into the third mounting channel 53 to control the opening and closing of the air inlet channel 51 and the air outlet channel 52. The end of the air outlet pipe 21 is separated from the inner core 5. The gas flow rate can be adjusted and the airflow can be controlled by rotating the valve stem 61 through the adjusting switch 6. The separation of the end of the air outlet pipe 21 from the inner core 5 provides good heat insulation and prevents the flame temperature from affecting the inner core 5 during use. It also includes a connector 7, which is located between the air outlet pipe 21 and the inner core 5. The connector 7 has a flow channel 71 that connects the air outlet channel 52 and the air outlet pipe 21. The end of the connector 7 is inserted into the air outlet channel. The structure of the exhaust pipe 21 is stabilized within the 52, without affecting the heat insulation effect. The third installation channel 53 is provided with a first air port 531, and the exhaust channel 52 is provided with a second air port 521. A preheating copper pipe 8 for conveying gas is connected between the first air port 531 and the second air port 521. The two ends of the preheating copper pipe 8 are connected to the first air port 531 and the second air port 521 respectively. The preheating copper pipe 8 is bent and extended into the ceramic cup 22 and is located on the other side of the exhaust pipe 21. The sleeve 23 and the ceramic cup 22 are provided with through grooves for the preheating copper pipe 8 to pass through, so that the gas in the copper pipe can be preheated at the same time as the flame is emitted, improving the gas conveying effect, so that the gas has higher energy when it is ejected, making it easier to ignite, and ensuring that the flame is stronger and more stable. The gas is easier to mix with the fuel and undergo complete combustion, reducing unburned gas, reducing waste, and improving efficiency.

[0031] The housing 1 has a mounting groove 12 on one side of the inner core 5. The piezoelectric electron 3 is located in the mounting groove 12. The preheating copper tube 8 is located between the piezoelectric electron 3 and the inner core 5. The lead wire 31 of the piezoelectric electron 3 passes around the inner core 5 and extends into the second mounting channel 233. The ignition switch 4 is slidably mounted on the housing 1 and abuts against the contact end of the piezoelectric electron 3 to trigger the piezoelectric electron 3. The structural layout is reasonable, making the internal structure of the housing 1 compact, and each component does not affect its own operation. The piezoelectric electron 3 is installed in the mounting groove 12, making its structure stable and its cooperation with the ignition switch 4 good. The housing 1 has a guide plate 13, and the ignition switch 4 has a guide groove 41. The guide plate 13 and the guide groove 41 cooperate to guide and slide, which plays a guiding and sliding role, making the structure stable when the ignition switch 4 slides, and driving the piezoelectric electron 3 more stably.

Claims

1. A flamethrower head for a flamethrower, comprising a housing (1), a nozzle assembly (2) disposed on the housing (1), a piezoelectric electron (3), and an ignition switch (4), wherein the nozzle assembly (2) comprises an exhaust pipe (21), a ceramic cup (22), and a sleeve (23), characterized in that, One end of the sleeve (23) is installed on the housing (1), and the other end of the sleeve (23) is provided with an open mounting chamber (231). The ceramic cup (22) is located in the mounting chamber (231). The ceramic cup (22) is provided with a first through hole (221) and a first mounting channel (222). The sleeve (23) is provided with a second through hole (232) and a second mounting channel (233). The second through hole (232) is provided in correspondence with the first through hole (221). The end of the vent pipe (21) passes through the second through hole (232) and the first through hole (221) in sequence and abuts against the bottom wall of the ceramic cup (22). The first mounting channel (222) is connected to the second mounting channel (233). The lead wire (31) of the piezoelectric electron (3) passes through the second mounting channel (233) and the first mounting channel (222), and the end of the lead wire (31) is exposed outside the first mounting channel (222) and located on one side of the vent pipe (21).

2. The flamethrower head on the flamethrower according to claim 1, characterized in that, The bottom wall of the installation chamber (231) is provided with a positioning block (235), and the outer bottom surface of the ceramic cup (22) is provided with a positioning groove (223). When the ceramic cup (22) is installed in the installation chamber (231), the positioning groove (223) cooperates with the positioning block (235).

3. The flamethrower head on the flamethrower according to claim 1 or 2, characterized in that, The housing (1) is also provided with an inner core (5) and an adjustment switch (6). The inner core (5) includes an air inlet channel (51), an air outlet channel (52), and a third mounting channel (53) located between the air inlet channel (51) and the air outlet channel (52). A valve stem (61) is connected to the adjustment switch (6). The valve stem (61) is threaded into the third mounting channel (53) to control the opening and closing of the air inlet channel (51) and the air outlet channel (52). The end of the air outlet pipe (21) is separated from the inner core (5).

4. The flamethrower head on the flamethrower according to claim 3, characterized in that, It also includes a connector (7), which is located between the air outlet pipe (21) and the inner core (5). The connector (7) has a flow channel (71) that connects the air outlet channel (52) and the air outlet pipe (21). The end of the connector (7) is inserted into the air outlet channel (52).

5. The flamethrower head on the flamethrower according to claim 1 or 2, characterized in that, The sleeve (23) is made of zinc alloy material.

6. The flamethrower head on the flamethrower according to claim 3, characterized in that, The third installation channel (53) is provided with a first air port (531), and the air outlet channel (52) is provided with a second air port (521). A preheating copper tube (8) for conveying gas is connected between the first air port (531) and the second air port (521). The two ends of the preheating copper tube (8) are connected to the first air port (531) and the second air port (521) respectively. The preheating copper tube (8) is bent and extended into the ceramic cup (22) and is located on the other side of the air outlet pipe (21). The sleeve (23) and the ceramic cup (22) are provided with through grooves for the preheating copper tube (8) to pass through.

7. The flamethrower head on the flamethrower according to claim 1 or 2, characterized in that, The sleeve (23) has an opening in the middle, and the end of the sleeve (23) connected to the housing (1) has a connection hole (234). The inner side of the housing (1) has a connection post (11), which is inserted into the connection hole (234) to install the sleeve (23) onto the housing (1).

8. The flamethrower head on the flamethrower according to claim 6, characterized in that, The housing (1) has a mounting groove (12) on one side of the inner core (5). The piezoelectric electron (3) is located in the mounting groove (12). The preheating copper tube (8) is located between the piezoelectric electron (3) and the inner core (5). The lead wire (31) of the piezoelectric electron (3) passes around the inner core (5) and extends into the second mounting channel (233). The ignition switch (4) is slidably mounted on the housing (1) and is set to abut against the contact end of the piezoelectric electron (3) to trigger the piezoelectric electron (3).

9. The flamethrower head on the flamethrower according to claim 8, characterized in that, The housing (1) is provided with a guide plate (13), and the ignition switch (4) is provided with a guide groove (41). The guide plate (13) and the guide groove (41) are guided and slidably cooperated.

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