Heat Gun Formed By Wave-type Heating Bodies

The present disclosure belongs to the technical field of heat guns, and particularly relates to a heat gun formed by wave-type heating bodies.

A heat gun is a tool for welding and removing elements mainly by means of hot air blown by an electrified heating resistance wire. A heating core is a main component of the heat gun for blowing the hot air. In order to reach a certain temperature at an air outlet of the heat gun, a plurality of heating wires are required to be mounted on the heating core component. A traditional heating wire is of a slingshot-wire-type structure manually wound. For the specific structure, refer toof the Description. However, the above structure makes it difficult to ensure consistency of density when the heating wire is wound and mounted. A thermal expansion coefficient of ceramic material is different from that of the heating wire. Therefore, the heating wire generates heat in the operating process and deforms after operating for a long time. Since the heating wire expands with heat and contracts with cold, adjacent heating wires may be in contact with each other and then form a short circuit to be fused, thereby affecting service life of the heat gun. Nearly half of the heating wire is buried in a ceramic support, such that heat dissipation efficiency of an air channel is reduced. Moreover, the heating core reaches a maximum temperature at a front end, and usually has no heat dissipation structure, such that heat is gathered at the front end, and the heating wire is damaged. On this basis, a heat gun capable of effectively dissipating heat is provided.

An objective of the present disclosure is to provide a heat gun formed by wave-type heating bodies, so as to solve the problems in the Background.

In order to realize the above objective, the present disclosure provides a technical solution as follows: a heat gun formed by wave-type heating bodies includes a housing assembly and a heating assembly mounted in the housing assembly. An air supply assembly is further fixedly mounted in the housing assembly. The air supply assembly is fixedly connected to one end of the heating assembly. An air output nozzle is sleeved at a front end of the housing assembly. An end cover is mounted at a tail end of the housing assembly. A temperature adjustment knob is mounted in a middle of the end cover. Air intake holes are formed on two sides of the end cover. The air intake holes are in communication with an air intake portion of the air supply assembly.

The heating assembly includes a support structure formed by a first mica plate and a second mica plate. Heating wires of wave-shaped structures are wound around surfaces of the first mica plate and the second mica plate. A heat sink is fixedly mounted at one end of the first mica plate and one end of the second mica plate close to the air output nozzle respectively.

As a preferred technical solution of the present disclosure, the housing assembly includes two mounting shells and two handle housings. The two handle housings are correspondingly mounted at bottoms of one ends of the two mounting shells respectively. The two mounting shells are connected to form a mounting cylinder. The two handle housings are connected to form a grip. Support plates are fixedly mounted in the two mounting shells. Cambered grooves are formed on surfaces of the support plates. Semi-annular grooves are formed at front ends of the two mounting shells. The air output nozzle is mounted in the two semi-annular grooves.

As a preferred technical solution of the present disclosure, the heating assembly further includes an air guide cylinder mounted in the mounting cylinder. A heat insulation sleeve is arranged on an inner wall of the air guide cylinder. The first mica plate and the second mica plate are mounted in the heat insulation sleeve. The first mica plate and the second mica plate are connected to each other in a perpendicular manner.

As a preferred technical solution of the present disclosure, the heating wires are wound by dedicated equipment.

As a preferred technical solution of the present disclosure, a plurality of sawtooth grooves are formed on the surfaces of the first mica plate and the second mica plate. The heating wires are embedded in the sawtooth grooves. Four air channels are formed between the first mica plate and the second mica plate and the heat insulation sleeve. A direction of the heating wire is perpendicular to a direction of the air channel.

As a preferred technical solution of the present disclosure, the air supply assembly includes connection covers mounted in the cambered grooves formed on the surfaces of the support plates. A support frame is connected to one side of each of the connection covers. Rotary motors are fixedly mounted in the support frames. Fans are fixedly mounted at output ends of the rotary motors. The fans are arranged in the connection covers. Mounting holes are formed on inner walls of the connection covers and one end of the air guide cylinder. Mounting bolts are in threaded connection to interiors of the mounting holes.

As a preferred technical solution of the present disclosure, the support frames are formed by connection discs and mounting sleeves. A plurality of connection sheets are connected to one ends of the mounting sleeves. One sides of the plurality of connection sheets are fixedly connected to surfaces of the connection discs. A plurality of air inlets are formed at joints between the connection sheets and the connection discs. The air inlets are in communication with external airflow through air intake holes.

As a preferred technical solution of the present disclosure, two limiting buckles are symmetrically connected to an edge of each connection disc. Anti-falling claws are fixedly connected to two sides of a surface of each connection cover. The anti-falling claws are inserted into the limiting buckles.

As a preferred technical solution of the present disclosure, connection holes are formed on surfaces of the connection sheets. Connection bolts are inserted into the connection holes. Two bolt columns are fixedly connected to an inner wall of one of the mounting shells. The connection bolts are in threaded connection to interiors of the bolt columns.

As a preferred technical solution of the present disclosure, annular grooves are symmetrically formed on inner walls of tail ends of the two mounting shells. A mounting ring is connected to an edge of the end cover. The mounting ring is inserted into the annular grooves.

As a preferred technical solution of the present disclosure, a plurality of plastic strips are connected in sequence along an edge of one of the mounting shells. Butt-joint columns are arranged between adjacent plastic strips. A plurality of fusion bonding grooves are formed in sequence along an edge of the other one of the mounting housings. Butt-joint holes are formed between adjacent fusion bonding grooves. The butt-joint columns are inserted into the butt-joint holes.

As a preferred technical solution of the present disclosure, temperature values for indicating temperatures are carved on a surface of the end cover. The temperature adjustment knob corresponds to the temperature values.

As a preferred technical solution of the present disclosure, reinforcing ribs are connected to inner walls of the two mounting shells.

As a preferred technical solution of the present disclosure, an integrated control board is fixedly mounted in the end cover. The heating wires, the rotary motor and the temperature adjustment knob are all in control connection to the integrated control board. Avoidance grooves are formed on one sides of the two handle housings. Switches are mounted in the avoidance grooves. A plug is further mounted in the grip. The integrated control board is in wire connection to the plug by means of the switches.

Compared with the prior art, the present disclosure has beneficial effects as follows:

In the figures:. housing assembly,. mounting shell,. handle housing,. avoidance groove,. switch,. mounting cylinder,. grip,. support plate,. cambered groove,. semi-annular groove,. annular groove,. plastic strip,. butt-joint column,. fusion bonding groove,. butt-joint hole,. reinforcing rib,. heating assembly,. air guide cylinder,. heat insulation sleeve,. first mica plate,. second mica plate,. sawtooth groove,. heating wire,. heat sink,. air supply assembly,. connection cover,. support frame,. connection disc,. mounting sleeve,. connection sheet,. air inlet,. limiting buckle,. anti-falling claw,. connection hole,. connection bolt,. bolt column,. rotary motor,. fan,. mounting hole,. mounting bolt,. air output nozzle,. end cover,. mounting ring,. temperature value,. temperature adjustment knob,. air intake hole,. integrated control board, and. plug.

Technical solutions of examples of the present disclosure will be clearly and completely described below in combination with accompanying drawings in the examples of the present disclosure. Apparently, the described examples are merely some examples rather than all examples of the present disclosure. All other examples derived by those of ordinary skill in the art on the basis of examples of the present disclosure without making inventive efforts all fall within the scope of protection of the present disclosure.

With reference to, the present disclosure provides a technical solution as follows: a heat gun formed by wave-type heating bodies includes a housing assemblyand a heating assemblymounted in the housing assembly. An air supply assemblyis further fixedly mounted in the housing assembly. The air supply assemblyis fixedly connected to one end of the heating assembly. An air output nozzleis sleeved at a front end of the housing assembly. An end coveris mounted at a tail end of the housing assembly. A temperature adjustment knobis mounted in a middle of the end cover. Air intake holesare formed on two sides of the end cover. The air intake holesare in communication with an air intake portion of the air supply assembly.

The heating assemblyincludes a support structure formed by a first mica plateand a second mica plate. Heating wiresof wave-shaped structures are wound around surfaces of the first mica plateand the second mica plate. A heat sinkis fixedly mounted at one end of the first mica plateand one end of the second mica plateclose to the air output nozzle.

With reference to, in the example, the housing assemblyincludes two mounting shellsand two handle housings. The two handle housingsare correspondingly mounted at bottoms of one ends of the two mounting shellsrespectively. The two mounting shellsare connected to form a mounting cylinder. The two handle housingsare connected to form a grip. Support platesare fixedly mounted in the two mounting shells. Cambered groovesare formed on surfaces of the support plates. Semi-annular groovesare formed at front ends of the two mounting shells. The air output nozzleis mounted in the two semi-annular grooves.

Specifically, the housing assemblyincludes two mounting shellsand two handle housings. The two handles are mounted at bottoms of one ends of the mounting shellsrespectively. The two mounting shellsare spliced to form a mounting cylinder, and an internal space of the mounting cylinderprovides a mounting space for the air supply assemblyand the heating assembly. The two handle housingsare connected to form a gripsuch that the heat gun can be conveniently held for use by means of the grip. Support platesare mounted in the two mounting shells. Cambered groovesare formed on surfaces of the support platessuch that a mounting support can be provided for the air supply assembly. The air output nozzleis mounted in the semi-annular groovesformed at the front ends of the mounting shellssuch that air supply guidance can be achieved by means of the air output nozzle.

With reference to, in the example, the heating assemblyfurther includes an air guide cylindermounted in the mounting cylinder. A heat insulation sleeveis arranged on an inner wall of the air guide cylinder. The first mica plateand the second mica plateare mounted in the heat insulation sleeve. The first mica plateand the second mica plateare connected to each other in a perpendicular manner.

Specifically, the heating assemblyis arranged, the air guide cylinderis mounted in the mounting cylinder, and the first mica plateand the second mica plateare connected to each other in a perpendicular manner, such that a support structure for supporting the heating wiresis mounted in the air guide cylinder. A plurality of sawtooth groovesare formed on the surfaces of the first mica plateand the second mica plate, and the heating wiresare embedded in the sawtooth grooves, such that the heating wiresare stably mounted. Moreover, a heat insulation sleeveis arranged on the inner wall of the air guide cylinderand the heat insulation sleevehas a desirable heat insulation effect, such that the situation that a high temperature output by the heating wiresis transmitted to a surface of the air guide cylinderto melt the housing assemblyis avoided.

With reference to, a plurality of sawtooth groovesare formed on the surfaces of the first mica plateand the second mica plate. The heating wiresare embedded in the sawtooth grooves. Four air channels are formed between the first mica plateand the second mica plateand the heat insulation sleeve. A direction of the heating wireis perpendicular to a direction of the air channel.

Specifically, the heating wirescan be conveniently fixed by means of the sawtooth grooves. Since the heating wireshave a wave-shaped structure, when generating heat during operation, the heating wiresare capable of resisting, by means of the structures, deformation at a high temperature and in a process from a high temperature to a normal temperature, the situation that the heating wiresin adjacent sawtooth groovesthermally expand due to heating to be attached to each other to cause a short circuit can be prevented, and further service life of the heat gun can be improved. After the wave-shaped heating wiresare wound and mounted in the sawtooth grooves, since four air channels formed between the heating wiresand the first mica plateare perpendicular, the second mica plateand the heat insulation sleeve, wind generated by a rear fanduring operation can blow out heat with maximum efficiency, and heat dissipation efficiency of the air channels is effectively improved. Moreover, the wave-shaped heating wireis compared with a heating wire of a spring-wire structure in the prior art recited inof the description, and the wave-shaped heating wireoccupies a less volume of the air channel such that the heat dissipation efficiency of the air channel can be further improved.

With reference to, in the example, the air supply assemblyincludes connection coversmounted in the cambered groovesformed on the surfaces of the support plates. Support framesare connected to one sides of the connection covers. Rotary motorsare fixedly mounted in the support frames. Fansare fixedly mounted at output ends of the rotary motors. The fansare arranged in the connection covers. Mounting holesare formed on inner walls of the connection coversand one end of the air guide cylinder. Mounting boltsare in threaded connection to interiors of the mounting holes.

Specifically, the air supply assemblyis arranged, and a connection coveris connected to the support platethrough a cambered grooveformed on the surface thereof. A support frameis connected to one side of the connection cover, and a rotary motoris mounted in the support frame. The rotary motorrotates to drive a fanat an output end to rotate, and the fanrotates in the connection coversuch that airflow can be blown to the air guide cylinderby means of the connection cover, and heat can be blown out. Mounting holesare correspondingly formed on the inner wall of the connection coverand at one end of the air guide cylinder, and mounting boltsare inserted into the mounting holes, such that the connection coveris fixedly connected to the air guide cylinder.

With reference to, the support framesare formed by connection discsand mounting sleeves. A plurality of connection sheetsare connected to one ends of the mounting sleeves. One sides of the plurality of connection sheetsare fixedly connected to surfaces of the connection discs. A plurality of air inletsare formed at joints between the connection sheetsand the connection discs. The air inletsare in communication with external airflow through air intake holes.

Specifically, the support frameis formed by connecting a connection discand a mounting sleeve. One end of the mounting sleeveis connected to the connection discby means of a plurality of connection sheets, such a plurality of air inletsare formed on the connection sheetsaround joints of the connect discs, and the air intake holesformed on two sides of the end coveris in communication with the air inlets. When the rotary motordrives the fanto rotate, a negative pressure is formed in the connection coversuch that external airflow can enter the air guide cylinderby means of the connection cover, and the airflow circulates.

With reference to, in the example, two limiting bucklesare symmetrically connected to an edge of each connection disc. Anti-falling clawsare fixedly connected to two sides of a surface of each connection cover. The anti-falling clawsare inserted into the limiting buckles. Connection holesare formed on surfaces of the connection sheets. Connection boltsare inserted into the connection holes. Two bolt columnsare fixedly connected to an inner wall of one of the mounting shells. The connection boltsare in threaded connection to interiors of the bolt columns.

Specifically, two limiting bucklesare symmetrically connected to the edge of the connection disc, and two sides of the surface of the connection coverare inserted into the limiting bucklesby means of anti-falling claws, such that the connection discis connected to the connection cover. Connection holesare formed on connection sheetson the surface of the connection disc, and connection boltsare inserted into the connection holes. Bolt columnsare connected to the inner walls of the mounting shells, and the connection boltsare in threaded connection to the bolt columns, such that the support frameis fixedly connected to the mounting shells, and the mounting stability of the air supply assemblyis ensured.

With reference to, in the example, annular groovesare symmetrically formed on inner walls of tail ends of the two mounting shells. A mounting ringis connected to an edge of the end cover. The mounting ringis inserted into the annular grooves.

Specifically, annular groovesare formed at tail ends of the two mounting shells, and the mounting ringat a connection edge of the end coveris inserted into the annular grooves, such that the end coveris fixedly connected to a tail end of the mounting cylinder.

With reference to, in the example, a plurality of plastic stripsare connected in sequence along an edge of one of the mounting shells. Butt-joint columnsare arranged between adjacent plastic strips. A plurality of fusion bonding groovesare formed in sequence along an edge of the other one of the mounting housings. Butt-joint holesare formed between adjacent fusion bonding grooves. The butt-joint columnsare inserted into the butt-joint holes.

Specifically, a plurality of plastic stripsare connected to the edge of one of the mounting shells, and butt-joint columnsare connected between the plurality of plastic strips. Fusion bonding groovesare formed at the edge of the other one of the mounting shells, and butt-joint holesare formed between the fusion bonding groove. When the two mounting shellsare connected, the butt-joint columnsare inserted into the butt-joint holes, such that the plastic stripsare inserted into the fusion bonding grooves. The mounting shellsare placed in an ultrasonic welding apparatus, and the plastic stripsare fused in the fusion bonding grooves, such that the entire structure has better moisture-proof and dust-proof functions.

With reference to, in the example, a heat sinkis fixedly mounted at one ends of the first mica plateand the second mica plateclose to the air output nozzle.

Specifically, a heat sinkis added at the front ends of the first mica plateand the second mica plate, and is capable of effectively dissipating heat at the front ends such that the situation that the heat is gathered at the front ends to damage the heating wirescan be avoided.

With reference to, in the example, temperature valuesfor indicating temperatures are carved on a surface of the end cover. The temperature adjustment knobcorresponds to the temperature values.

Specifically, temperature valuesare carved on the surface of the end cover, and the temperature adjustment knobis adjusted corresponding to the temperature valuesduring rotation such that the corresponding heating temperatures can be adjusted according to usage requirements.

With reference to, in the example, reinforcing ribsare connected to inner walls of the two mounting shells.

Specifically, since the reinforcing ribsare connected to the inner walls of the mounting shells, structural strength of the mounting cylinderis improved.

With reference to, in the example, an integrated control boardis fixedly mounted in the end cover. The heating wires, the rotary motorand the temperature adjustment knobare all in control connection to the integrated control board. Avoidance groovesare formed on one sides of the two handle housings. Switchesare mounted in the avoidance grooves. A plugis further mounted in the grip. The integrated control boardis in wire connection to the plugby means of the switches.

Specifically, avoidance groovesare formed on one sides of the two handle housings, switchesare mounted in the avoidance grooves, and the switchesare connected to the integrated control boardfixedly mounted in the end cover. When the plugis connected to a power supply, the integrated control boardis electrified by controlling the switches, and the heating wires, the rotary motorand the temperature adjustment knobare controlled to operate. When the power supply of the plugis pulled out or the switchesare turned off, the integrated control boardis powered off, and the heat gun stops operating.

A working principle is as follows: the first mica plateand the second mica plateare connected to each other in a perpendicular manner, such that a support structure for supporting the heating wiresis formed. A plurality of sawtooth groovesare formed on the surfaces of the first mica plateand the second mica plate, and the heating wiresare embedded in the sawtooth grooves, such that the heating wiresare stably mounted. The heating wireis wound into a wave-type structure by dedicated equipment. Compared with a traditional slingshot-wire-type structure, the wave-type structure is capable of resisting deformation of the heating wireat a high temperature and in a process from a high temperature to a normal temperature such that defects caused by thermal expansion and contraction when the heating wireoperates or stops can be avoided. After the wave-type structure of the heating wireis wound around a mica plate, a direction of the wave-type structure is exactly perpendicular to a direction of an air channel such that wind generated by a fanbehind can blow out heat with maximum efficiency. The heating wireresists thermal expansion and contraction by means of the wave-type structure, and will not deform even through the heating wireoperates for a long time such that the situation that the heating wire deforms after operating for a long time, and then form a short circuit to be fused can be avoided. Moreover, a heat sinkis added at the front ends of the first mica plateand the second mica plate, and is capable of effectively dissipating heat at the front end such that the situation that the heat is gathered at the front end to damage the heating wirecan be avoided. Supplementarily, a plurality of plastic stripsare connected to the edge of one of the mounting shells, and butt-joint columnsare connected between the plurality of plastic strips. Fusion bonding groovesare formed at the edge of the other one of the mounting shells, and butt-joint holesare formed between the fusion bonding groove. When the two mounting shellsare connected, the butt-joint columnsare inserted into the butt-joint holes, such that the plastic stripsare inserted into the fusion bonding grooves. The mounting shellsare placed in an ultrasonic welding apparatus, and the plastic stripsare fused in the fusion bonding grooves, such that the entire structure has better moisture-proof and dust-proof functions. Further, the support frameis formed by connecting a connection discand a mounting sleeve. One end of the mounting sleeveis connected to the connection discby means of a plurality of connection sheets, such a plurality of air inletsare formed on the connection sheetsaround joints of the connect discs. The air intake holesformed on two sides of the end coverare in communication with the air inletssuch that external airflow can enter the air guide cylinderby means of the connection cover, and the airflow circulates.

Finally, it should be noted that the above examples are merely the preferred examples of the present disclosure and are not intended to limit the present disclosure. Although the present disclosure is described in detail with reference to the foregoing examples, a person skilled in the art can still make modifications to the technical solutions described in various foregoing examples, or make equivalent substitutions to some technical features in the technical solutions. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall fall within the scope of protection of the present disclosure.