Double-barrel hot air gun capable of increasing heating area

Abstract

The invention relates to the technical field of hot air gun equipment, in particular to a double-gun-barrel hot air gun capable of increasing the heating area, which comprises a shell, two heating pipes are arranged in the shell, one end of each heating pipe is connected with an air blower, one end of each air blower is connected with an air duct, the air duct is of a Y-shaped structure, and a brushless motor is arranged in a main body section of the air duct. The branch section of the air duct is in butt joint with the air drum, a spiral air guide groove is formed in the inner wall of the air drum and extends in the axial direction of the air drum, and the screw pitch of the spiral air guide groove is gradually reduced from the air duct side to the heating pipe side. According to the double-gun-barrel heat gun capable of increasing the heating area, through the double-gun-barrel design, the heating air outlet area is directly enlarged, the short-time heating requirements of scenes such as automobile film pasting and large-area glue removing can be rapidly met, and the heating efficiency is remarkably improved. The matching structure of the Y-shaped air duct and the air drum is combined with the gradually-changing design of the screw pitch of the spiral air guide groove, airflow rectification and step-by-step air gathering pressurization are achieved, it is ensured that airflow evenly enters the two heating pipes, and heat exchange sufficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hot air gun equipment, in particular to a double-barrel hot air gun with increased heating area. BACKGROUND

[0002] A hot air gun is based on the principle of electric energy-thermal energy conversion and forced convection heat transfer, and achieves rapid and uniform heating by heating air and blowing it to the target, and is widely used in industrial production and home decoration fields. The working temperature of industrial hot air gun is generally above 500 DEG C, and in the scenes of car film pasting, product packaging, electronic component installation and home decoration glue removal, short-time heating of large-area objects is required, and the heating efficiency is extremely high.

[0003] The existing hot air gun mostly adopts single-pipe heating air outlet design, and the heating area is limited, which is difficult to meet the above-mentioned large-area and high-efficiency heating demand. Although there are related improvement schemes, such as the double-hole heating body hot air gun disclosed in Chinese invention patent CN209431661U, but it is still limited to single-gun tube structure, only double-hole heating structure is arranged in the tube, and the core problem of small heating area of single-pipe air outlet is not fundamentally solved. At the same time, the existing scheme mostly adopts ordinary motor to blow air, and when adapting to double-air duct design, it is difficult to provide sufficient air volume and pressure, and cannot meet the air flow conduction demand in the high-pressure environment of rectification section, further affecting the heating efficiency and heat exchange effect, and restricting the application of hot air gun in large-area heating scene. SUMMARY

[0004] The purpose of the present application is to provide a double-barrel hot air gun with increased heating area to solve the problem that the existing hot air gun mostly adopts single-pipe heating air outlet design, and the heating area is limited, which is difficult to meet the above-mentioned large-area and high-efficiency heating demand.

[0005] To achieve the above-mentioned purpose, the present application provides a double-barrel hot air gun with increased heating area, which comprises an outer shell, two heating pipes are installed in the inner part of the outer shell, a wind drum is connected to one end of the heating pipe, a wind channel is connected to one end of the wind drum, the wind channel is a Y-shaped structure, a brushless motor is installed in the main body section of the wind channel, the branch section of the wind channel is connected with the wind drum, a spiral air guide groove is arranged on the inner wall of the wind drum, the spiral air guide groove extends along the axial direction of the wind drum, and the pitch of the spiral air guide groove gradually decreases from the wind channel side to the heating pipe side.

[0006] This double-heating-pipe design directly increases the heating area and adapts to the large-area heating demand; the Y-shaped wind channel realizes single-inlet air double-channel shunting and guarantees balanced air supply; the brushless motor can provide sufficient air volume and stable air pressure to meet the air supply demand of double-air duct, and has the advantages of low sound and stepless control; the spiral air guide groove and the gradually changing pitch design can guide the air flow to spiral forward and gradually gather wind and increase pressure, improve the uniformity of air flow entering the heating pipe, and strengthen the heat exchange effect.

[0007] Preferably, an air inlet mesh cover is mounted outside the air inlet end of the air duct.

[0008] The air inlet mesh cover can filter dust and sundries in the air, prevent sundries from entering the air duct and wearing related components, prolong the service life of the equipment, and ensure the cleanliness of the air inlet.

[0009] Preferably, the shell comprises a left half shell and a right half shell, a handle is mounted on the lower part of the shell, a switch is mounted on the handle, and a wire is connected to the bottom end of the handle.

[0010] The split design of the shell reduces the difficulty of assembly and later maintenance, facilitates the installation and adjustment of internal components, the handle conforms to ergonomics, improves the comfort of holding and controlling, the switch can quickly start and stop the equipment, the wire ensures stable power input, and the use is convenient.

[0011] Preferably, the air duct comprises an upper cover and a lower cover that are connected to each other, the brushless motor is mounted on the main section of the air duct, and the air drum is mounted on the branch section of the air duct.

[0012] The upper and lower covers of the air duct are connected to each other, which facilitates the processing and molding of the air duct, and facilitates the installation and maintenance of the internal brushless motor and air drum; the reasonable installation position layout ensures the driving efficiency of the brushless motor and the air guiding effect of the air drum, and ensures the overall air supply stability of the air duct.

[0013] Preferably, the diameter of the branch section of the air duct gradually increases from the air inlet end to the air outlet end.

[0014] The gradually changing diameter of the branch section of the air duct can optimize the airflow rectification effect, reduce airflow resistance, improve the smoothness of airflow entering the air drum, and ensure the stability of subsequent airflow supply.

[0015] Preferably, a control panel is mounted on the top of the shell.

[0016] The control panel facilitates the intuitive adjustment of temperature, air volume and other parameters by the operator, can accurately adapt to the heating needs of different scenes, and improves the operation convenience and adaptability of the equipment.

[0017] Preferably, a heat insulation cotton layer is arranged between the inner wall of the shell and the heating pipe, the thickness of the heat insulation cotton layer is 5-10mm, and an aluminum foil reflection layer is arranged on the side of the heat insulation cotton layer close to the heating pipe.

[0018] The heat insulation cotton layer and the aluminum foil reflection layer work together to effectively block the heat loss of the heating pipe to the shell, which not only improves the energy utilization rate, but also avoids the overheating of the shell causing burns to the operator, and ensures the safety in use.

[0019] The inside of the heating pipe is provided with a graphene heating element, and the outside of the graphene heating element is sleeved with a heat-conducting metal mesh, and a ventilation gap is left between the heat-conducting metal mesh and the inner wall of the heating pipe.

[0020] The graphene heating element has high heating efficiency and fast heating speed, the heat-conducting metal mesh can uniformly disperse heat, and the ventilation gap ensures smooth airflow, so that the heating uniformity and heat exchange efficiency are improved, and stable high-temperature airflow is output.

[0021] Compared with the prior art, the present application has the following advantages: In the double-gun pipe hot air gun with the increased heating area, the heating area is directly expanded by the double-gun pipe design, the short-time heating demand of the automobile film pasting and large-area adhesive removal scenes can be quickly adapted, and the heating efficiency is significantly improved. The Y-shaped air duct and the cooperation structure of the air drum, combined with the gradually changing pitch of the spiral air guide groove, realize airflow rectification and step-by-step air gathering and pressure boosting, ensure that the airflow uniformly enters the two heating pipes, and improve the heat exchange fullness. The application of the brushless motor solves the defect that the ordinary motor is difficult to adapt to the double air duct, ensures sufficient air volume and stable air pressure in the high-voltage rectification environment, and has the advantages of low sound and stepless regulation and control.

[0022] The graphene heating element is matched with the heat-conducting metal mesh and the ventilation gap to strengthen the heating efficiency and temperature uniformity; the 5-10mm thermal insulation cotton layer and the aluminum foil reflection layer cooperate to reduce heat loss, which not only improves the energy utilization rate, but also avoids overheating of the shell. The overall structure only needs a single air inlet to cooperate with a double air outlet, without adding a motor, which effectively controls the cost while optimizing the performance, and fully solves the technical pain points of the existing single-pipe hot air gun, such as small heating area, low efficiency and poor adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the explosion structure of the present application; Figure 3 It is a schematic diagram of part of the structure of the present application; Figure 4 It is a schematic diagram of the structure of the air drum in the present application; The meanings of the various reference numerals in the drawings are as follows: 1, shell; 11, left half shell; 12, right half shell; 13, handle; 14, wire; 2, heating pipe; 3, air drum; 31, spiral air guide groove; 4, air duct; 41, upper cover; 42, lower cover; 43, brushless motor; 5, air inlet mesh cover; 6, switch; 7, control panel. DETAILED DESCRIPTION

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides a dual-tube hot air gun with an increased heating area, such as... Figures 1-4 As shown, the device includes an outer casing 1, inside which two heating elements 2 are installed. One end of the heating element 2 is connected to a blower 3, and one end of the blower 3 is connected to an air duct 4. The air duct 4 has a Y-shaped structure. A brushless motor 43 is installed inside the main section of the air duct 4. The branch section of the air duct 4 is connected to the blower 3. The inner wall of the blower 3 is provided with a spiral air guide groove 31. The spiral air guide groove 31 extends along the axial direction of the blower 3, and the pitch of the spiral air guide groove 31 gradually decreases from the side of the air duct 4 to the side of the heating element 2.

[0026] The dual heating element 2 design directly doubles the heating area, adapting to the needs of large-area heating scenarios and solving the problem of low heating efficiency of single elements. The Y-shaped air duct 4 achieves single air intake and dual-channel flow diversion, and with the docking structure between the blower 3 and the branch section of the air duct 4, it ensures a balanced airflow supply to the two heating elements 2. The brushless motor 43 is installed in the main section of the air duct 4, which can provide a larger air volume and stable air pressure compared to ordinary motors, meeting the high-pressure requirements of simultaneous air supply from dual air ducts, and has the advantages of low noise and stepless adjustment. The spiral air guide groove 31 and the gradually changing pitch design on the inner wall of the blower 3 can guide the airflow spiral forward and gradually concentrate and pressurize the air, improving the uniformity of the airflow entering the heating element 2 and enhancing the heat exchange effect.

[0027] Specifically, the outer casing 1 includes a left half-shell 11 and a right half-shell 12. A handle 13 is installed on the lower part of the outer casing 1, a switch 6 is installed on the handle 13, and a wiring 14 is connected to the bottom of the handle 13. A control panel 7 is installed on the top of the outer casing 1.

[0028] The outer casing 1 adopts a split design with a left half-shell 11 and a right half-shell 12, which greatly reduces the difficulty of assembly and subsequent maintenance, and facilitates the installation and debugging of internal components such as the heating element 2 and the blower 3. The handle 13 at the bottom of the outer casing 1 is ergonomically designed for easy gripping and operation, improving user comfort; the switch 6 on the handle 13 can quickly start and stop the equipment, and the bottom wiring 14 ensures a stable power supply. The control panel 7 on the top of the outer casing 1 allows operators to intuitively adjust parameters such as temperature and airflow, improving the ease of operation and adapting to the heating needs of different scenarios.

[0029] Further, the air inlet mesh cover 5 is installed outside the air inlet end of the air duct 4. The air duct 4 comprises an upper cover 41 and a lower cover 42 which are in abutting cooperation with each other, the brushless motor 43 is installed in the main body section of the air duct 4, and the air drum 3 is installed in the branch section of the air duct 4. The diameter of the branch section of the air duct 4 gradually increases from the air inlet end to the air outlet end.

[0030] Further, the inner wall of the shell 1 and the heating tube 2 are provided with a heat insulation cotton layer, the thickness of the heat insulation cotton layer is 5-10mm, and the side of the heat insulation cotton layer close to the heating tube 2 is provided with an aluminum foil reflection layer. The inside of the heating tube 2 is provided with a graphene heating element, and the outside of the graphene heating element is sleeved with a heat-conducting metal mesh, and a ventilation gap is left between the heat-conducting metal mesh and the inner wall of the heating tube 2.

[0031] The air inlet mesh cover 5 of the air inlet end of the air duct 4 can block dust and sundries from entering the inside of the air duct 4, so as to avoid that the components such as the brushless motor 43 and the air drum 3 are abraded by impurities, and prolong the service life of the equipment. The abutting structure of the upper cover 41 and the lower cover 42 of the air duct 4 facilitates the processing and forming of the air duct 4 and the installation and maintenance of the internal brushless motor 43; the diameter gradually changing design of the branch section of the air duct 4 can further optimize the airflow rectification effect and improve the smoothness of the airflow entering the air drum 3. The 5-10mm heat insulation cotton layer and the aluminum foil reflection layer between the inner wall of the shell 1 and the heating tube 2 can effectively block the heat of the heating tube 2 from being dissipated to the shell 1, which not only improves the energy utilization rate, but also avoids that the shell 1 is overheated to scald the operator; the graphene heating element in the heating tube 2 has high heating efficiency and fast heating, the heat-conducting metal mesh outside can uniformly disperse heat, and the ventilation gap ensures smooth airflow, so that the three can synergistically improve the heating uniformity and heat exchange efficiency.

[0032] The double-gun-tube hot air gun with increased heating area of the present application, when in use, firstly connects the wiring 14 at the bottom end of the handle 13 to the power supply, the operator holds the handle 13, starts the equipment through the switch 6 on the handle 13, and then sets the temperature, air volume and other parameters according to the actual heating demand through the control panel 7 on the top of the shell 1.

[0033] After the equipment is started, the brushless motor 43 installed in the main body section of the Y-shaped air duct 4 starts to operate, generates negative pressure suction, and the external air is filtered through the air inlet mesh cover 5 outside the air inlet end of the air duct 4, and then enters the main body section of the air duct 4 after removing dust, sundries and other impurities. Under the driving force of the brushless motor 43, the airflow flows to the two branch sections of the air duct 4, realizing the shunt guidance of single air inlet and double channels.

[0034] The airflow after the distribution enters the air drum 3 connected with the branch section of the air duct 4, and the spiral air guide groove 31 on the inner wall of the air drum 3 guides the airflow to move along the spiral track, and since the pitch of the spiral air guide groove 31 gradually decreases from the side of the air duct 4 to the side of the heating pipe 2, the airflow is gradually gathered and pressurized in the process of moving, and the design that the diameter of the branch section of the air duct 4 gradually increases from the air inlet end to the air outlet end further optimizes the airflow rectification effect, so that the airflow enters the two heating pipes 2 stably and uniformly.

[0035] At the same time, the graphene heating element in the heating pipe 2 starts to work and heat up, and the heat is quickly dispersed through the heat-conducting metal mesh on the outside, and the airflow smoothly passes through the ventilation gap between the heat-conducting metal mesh and the inner wall of the heating pipe 2 and fully contacts with the dispersed heat to complete heat exchange and form high-temperature airflow. In this process, the 5-10mm thick layer of heat insulation cotton and the aluminum foil reflection layer between the inner wall of the shell 1 and the heating pipe 2 effectively block the heat of the heating pipe 2 from dissipating to the shell 1, which not only improves the energy utilization rate but also avoids overheating of the shell 1 and burns the operator.

[0036] Finally, the high-temperature airflow after sufficient heating is discharged synchronously from the air outlets of the two heating pipes 2, realizing large-area uniform heating and meeting the needs of large-area heating scenes such as automobile film pasting and home decoration glue removal; during the entire working process, the operator can real-time control parameters through the control panel 7, and the stepless control advantage of the brushless motor 43 also ensures the stable adaptation of air volume and air pressure.

[0037] Finally, it should be noted that the brushless motor 43 and the electronic components in the above components in the embodiment are all general standard components or components known to those skilled in the art, and their structure and principle can be known by those skilled in the art through technical manuals or through conventional experimental methods. In the idle place of the device, all the above electrical components are connected through wires, and the specific connection means should be completed according to the working order of the electrical components in the above working principle, which are all well-known technologies in the art.

[0038] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A dual-barrel hot air gun with increased heating area, comprising a housing (1), characterized in that: The housing (1) has two heating tubes (2) installed inside. One end of the heating tube (2) is connected to a blower (3), and one end of the blower (3) is connected to a duct (4). The duct (4) has a Y-shaped structure. A brushless motor (43) is installed inside the main body of the duct (4). The branch section of the duct (4) is connected to the blower (3). The inner wall of the blower (3) is provided with a spiral air guide groove (31). The spiral air guide groove (31) extends along the axial direction of the blower (3), and the pitch of the spiral air guide groove (31) gradually decreases from the side of the duct (4) to the side of the heating tube (2).

2. The dual-tube hot air gun with increased heating area according to claim 1, characterized in that: An air inlet mesh cover (5) is installed on the outside of the air inlet end of the air duct (4).

3. The dual-tube hot air gun with increased heating area according to claim 1, characterized in that: The outer casing (1) includes a left half-shell (11) and a right half-shell (12). A handle (13) is installed on the lower part of the outer casing (1). A switch (6) is installed on the handle (13). A wiring wire (14) is connected to the bottom end of the handle (13).

4. The dual-tube hot air gun with increased heating area according to claim 1, characterized in that: The air duct (4) includes an upper cover (41) and a lower cover (42) that are connected to each other. The brushless motor (43) is installed in the main body section of the air duct (4), and the blower (3) is installed in the branch section of the air duct (4).

5. The dual-tube hot air gun with increased heating area according to claim 4, characterized in that: The diameter of the branch section of the air duct (4) gradually increases from the air inlet end to the air outlet end.

6. The dual-tube hot air gun with increased heating area according to claim 1, characterized in that: A control panel (7) is mounted on the top of the outer casing (1).

7. The dual-tube hot air gun with increased heating area according to claim 1, characterized in that: A heat insulation cotton layer is provided between the inner wall of the outer shell (1) and the heating tube (2). The thickness of the heat insulation cotton layer is 5-10mm, and an aluminum foil reflective layer is provided on the side of the heat insulation cotton layer close to the heating tube (2).

8. The dual-tube hot air gun with increased heating area according to claim 1, characterized in that: The heating tube (2) is equipped with a graphene heating element inside, and a heat-conducting metal mesh is sleeved on the outside of the graphene heating element. A ventilation gap is left between the heat-conducting metal mesh and the inner wall of the heating tube (2).

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