CN212253145U - Heating device of hot air gun - Google Patents
Heating device of hot air gun Download PDFInfo
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- CN212253145U CN212253145U CN202020691273.6U CN202020691273U CN212253145U CN 212253145 U CN212253145 U CN 212253145U CN 202020691273 U CN202020691273 U CN 202020691273U CN 212253145 U CN212253145 U CN 212253145U
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- support plate
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Abstract
The utility model provides a heating device of hot-blast rifle, its utilizes the insulating backup pad of fixed heater strip as extra air current drive arrangement, utilizes the drive of the further inside air current of providing of motor drive insulating support rotation to the hot-blast rifle for the air current after the inside heating of hot-blast rifle is exported to the front end through insulating backup pad fast and is discharged. Therefore, the utility model discloses can avoid the inside overheated of hot-blast rifle, avoid the component to become invalid or damage because of the inside overheated of hot-blast rifle. The utility model discloses can increase hot-blast rifle's air output when extension hot-blast rifle life.
Description
Technical Field
The utility model relates to a five metals electric tool field particularly relates to a heating device of hot-blast rifle.
Background
The interior of the existing heat gun is provided with a heating element between the motor and the air outlet. The heating element is typically wrapped around an insulating plate and secured inside the heat gun. However, in the heat gun, the cold air is generally driven into the heat gun from the rear side of the motor by the fan, and then heated by the heating element and output from the front of the heat gun. Therefore, the heat distribution in the hot air gun is gradually increased and accumulated from the motor to the air outlet along with the turn number of the heating element step by step. The heating element arranged at the front end is easy to be overheated and fused to influence the service life of the heat gun.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide a heating device of hot-blast rifle, with the form that heating device overall framework designed to the helical fin, the inside air current of drive air-blast rifle flows with higher speed, avoids the overheated damage of component. The utility model discloses specifically adopt following technical scheme.
To achieve the above object, a heating device of a heat gun is provided, which includes: the insulating supporting plate comprises 3 pieces, the inner sides of which are connected with each other to form a Y-shaped cross section; a plurality of parallel fixing grooves are distributed at the front end of the outer side of each insulating support plate, at least one clamping groove is respectively arranged at the rear end of the outer side of each insulating support plate, and the distance between the clamping groove on each insulating support plate and the rear end of the insulating support plate is kept consistent; the heating wires are wound to the front ends of the insulating support plates along the length direction of the insulating support plates and are sequentially clamped in the fixing grooves of the insulating support plates; the thickness of the fastening ring is close to the width of the clamping groove, the fastening ring surrounds the outside of the insulating support plate which is abutted to form the Y-shaped cross section, and the fastening ring is clamped in the clamping groove at the rear end of the insulating support plate to connect the 3 insulating support plates into a whole; the outer side edge of the fastening ring is provided with a connecting rod, and the connecting rod extends out of the fastening ring; the electric brushes are matched with the connecting rods in quantity and are respectively arranged at the far end of each connecting rod, the electric brushes are made of conductive materials, and the end parts of the heating wires are respectively and electrically connected with the electric brushes; the stator surrounds the fastening ring and is arranged on the outer side of the electric brush, at least two electrodes are arranged on the surface of the inner wall of the stator, and the electrodes are abutted against the electric brush to form electric connection; the rear end of the integral structure formed by connecting the insulating support plate is connected with a motor shaft of the hot air gun, when the motor of the hot air gun drives the insulating support plate to rotate in the stator, the electric brushes sequentially pass through the electrodes, correspondingly conduct electric signals of the corresponding electrodes to the heating wires connected with the electric brushes, the heating wires generate heat after being electrified, and the insulating support plate drives the heat to be discharged to the front end of the hot air gun in a rotating mode.
Optionally, in the heating device of the hot air gun, the outer periphery of the heating wires is coated with an insulating layer, the number of the heating wires is the same as that of the electric brushes, and two ends of each heating wire are connected between different electric brushes in pairs respectively.
Optionally, in the heating device of the heat gun, the number of the electrodes is the same as the number of the electric brushes, a gap recessed toward the outer wall of the stator is left between the electrodes, the gap is made of an insulating material, and the edges of the front end and the rear end of each electrode are further provided with a limiting protrusion, and the limiting protrusions abut against the front end and the rear end of each electric brush to prevent the electric brushes from being separated from the inner wall of the stator.
Optionally, in the heating device of the heat gun, the front end of each of the insulating support plates is provided with a rotation angle in the same direction as the driving direction of the motor of the heat gun.
Optionally, in the heating device of the heat gun, the width of each insulating support plate gradually decreases from back to front; the inner sides of the insulating support plates are respectively provided with plug connectors which are matched with each other, the inner sides of the insulating support plates are fixedly inserted into each other, and the rear ends of the inner sides of the insulating support plates are fixedly connected with a driving shaft of a motor of the hot air gun in a fixed insertion state.
Optionally, in the heating device of the heat gun, a surface of the electric brush is covered with a graphite material; the insulating support plate is made of ceramic materials.
Optionally, in the heating apparatus for a heat gun, the fastening ring and the connecting rod are made of heat-resistant metal, and the surfaces thereof are uniformly coated with insulating coatings.
Advantageous effects
The utility model provides a heating device of hot-blast rifle, its insulating backup pad that utilizes fixed heater strip is as extra air current drive arrangement, utilizes the drive motor drive insulating support of the inside current fan of hot-blast rifle and fan synchronous revolution with the drive of further providing the inside air current of hot-blast rifle for the air current after the inside heating of hot-blast rifle is exported to the front end through insulating backup pad fast and is discharged. Therefore, the utility model discloses can avoid the inside overheated of hot-blast rifle, avoid the component to become invalid or damage because of the inside overheated of hot-blast rifle. The utility model discloses can increase hot-blast rifle's air output when extension hot-blast rifle life.
Further, the utility model discloses set up the brush in heating device's rear end, the electrode that the annular set up is connected to this brush to switch between each electrode in proper order along with the rotation of insulating backup pad. The electrode connection brush and then provides the power supply to the heater strip that the brush is connected, and the brush switches the in-process of electrode, because the change of electric current can form induced-current between the heater strip, therefore can further produce bigger heat through induced-current, the inside gas of further heating hot-blast rifle improves the heating efficiency to gas, improves hot-blast rifle's operation effect to suitably reduce its consumption.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the invention for the purpose of explanation and not limitation of the invention. In the drawings:
FIG. 1 is a schematic view of the main structure of the insulating support plate of the heating device of the hot air gun of the present invention;
FIG. 2 is a schematic view showing the connection relationship between the fastening ring and the stator in the heating device of the hot air gun of the present invention;
fig. 3 is a sectional view of a heat gun to which the present invention is applied.
In the drawing, 1 denotes an insulating support plate, 11 denotes a fixing groove, 12 denotes a catching groove, 2 denotes a heater wire, 3 denotes a fastening ring, 31 denotes a connecting rod, 4 denotes a brush, 5 denotes a stator, 51 denotes an electrode, 6 denotes a motor, and 7 denotes a fan.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the following description will clearly and completely describe the technical solution of the embodiments of the present invention by combining the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "inside and outside" in the present invention means that the direction pointing to the inside of the heat gun is inside, and vice versa, relative to the heat gun itself; and not to the specific limitations of the device mechanism of the present invention.
The term "connected" as used herein may mean either a direct connection between elements or an indirect connection between elements through other elements.
The utility model discloses in when the meaning of "preceding, back" indicate that the user holds hand hot-blast rifle, the direction of being inhaled hot-blast rifle by the air current is the back, and the air current is preceding by the exhaust direction behind the hot-blast rifle heating, and not right the utility model discloses a device mechanism's specific injecing.
Referring to the heat gun shown in fig. 3, an electric fan 7 is disposed inside the heat gun near the air inlet, a motor shaft of a motor 6 is connected to the middle of the electric fan, and the motor drives the heat gun to rotate so as to suck air with a lower temperature into the heat gun from the rear end of the heat gun.
The utility model discloses an among the hot-air gun, set up the heating device of hot-air gun at the front end of motor, refer to fig. 1 and fig. 2 and show, it includes:
an insulating support plate 1, which comprises 3 pieces, generally selected from ceramic materials, and the inner sides of which are connected with each other to form a Y-shaped cross section; a plurality of fixing grooves 11 which are parallel to each other are arranged at the front end of the outer side of each insulating support plate 1, at least one clamping groove 12 is respectively arranged at the rear end of the outer side of each insulating support plate 1, and the distance between the clamping groove on each insulating support plate 1 and the rear end of the insulating support plate 1 is kept consistent;
the heating wire 2 is wound to the front end of the insulating support plate 1 along the length direction of the insulating support plate 1 and is sequentially clamped in the fixing grooves 11 of the insulating support plates 1;
referring to fig. 2, the heating and hot air driving structure composed of the heating wire and the insulating support plate is mounted and fixed and provides electric connection for supplying power by the following structure:
the thickness of the fastening ring 3 is close to the width of the clamping groove 12, the fastening ring 3 surrounds the outside of the insulating support plate 1 which is abutted to form a Y-shaped cross section, and the fastening ring is clamped in the clamping groove 12 at the rear end of the insulating support plate 1 to connect the 3 insulating support plates 1 into a whole; the outer edge of the fastening ring 3 is provided with a connecting rod 31, and the connecting rod 31 extends out of the fastening ring 3; in a preferable mode, the fastening ring 3 and the connecting rod 31 are made of heat-resistant metal materials, and the surfaces of the fastening ring and the connecting rod are uniformly coated with insulating coatings so as to provide connection strength and toughness and avoid the heating wire from touching the fastening ring to form a short circuit and damage a circuit structure in the working process;
the electric brushes 4 are matched with the connecting rods 31 in number and are respectively arranged at the far end of each connecting rod 31, the electric brushes 4 are made of conductive materials, particularly, the surfaces of the electric brushes can be covered with graphite materials so as to reduce friction between the electric brushes and electrodes while conducting electricity, and the end parts of the heating wires 2 are respectively and electrically connected with the electric brushes 4;
a stator 5 surrounding the fastening ring 3 and disposed outside the brush 4, wherein at least two electrodes 51 are disposed on an inner wall surface of the stator, and the electrodes 51 are in contact with and electrically connected to the brush 4;
the rear end of the integral structure formed by connecting the insulating support plate 1 is connected with a motor shaft of the hot air gun, when the motor of the hot air gun drives the insulating support plate 1 to rotate in the stator 5, each electric brush 4 sequentially passes through each electrode 51, correspondingly conducts an electric signal of the corresponding electrode 51 to the heating wire 2 connected with the electric brush 4, the heating wire 2 generates heat after being electrified, and the insulating support plate 1 drives the heat to be discharged to the front end of the hot air gun in a rotating mode.
Wherein, the periphery cladding of heater strip 2 has the insulating layer, the quantity of heater strip is the same with the quantity of brush 4, for example, all set up to 3 with the brush in this embodiment heater strip. Two ends of each heating wire are respectively connected between different electric brushes 4 in pairs. Such as: the two ends of the first heating wire are respectively connected with the first electric brush and the second electric brush, the two ends of the second heating wire are respectively connected with the second electric brush and the third electric brush, and the two ends of the third heating wire are respectively connected with the second electric brush and the first electric brush.
The number of the electrodes 51 is the same as that of the electric brushes 4, gaps sunken to the outer wall of the stator 5 are reserved among the electrodes 51, the gaps are made of insulating materials, limiting protrusions are further arranged on the edges of the front end and the rear end of each electrode 51 along the outer edge of the stator, the limiting protrusions abut against the front end and the rear end of each electric brush 4, and the electric brushes 4 are prevented from being separated from the inner wall of the stator 5. Different voltages are set between the electrodes. The brush 4 rotates between the electrodes to obtain the voltage of the electrode it contacts, and a current is formed in the heating wire to which the brush is connected. When the electric brush switches the electrode, the voltage obtained by the heating wire changes, the current in the heating wire correspondingly changes, and induction current is formed, and the induction current generates extra heat in the heating wire, so that the heating value of the heating wire is further improved, and the gas in the hot air gun is further heated.
In order to ensure the circulation speed of the air flow in the hot air gun and avoid the heat accumulation in the hot air gun from influencing the normal work of circuit elements, the front end of each insulating support plate 1 is respectively provided with a rotation angle which is the same as the driving direction of a motor 6 of the hot air gun. That is to say, the utility model discloses on the basis of the inside air current of hot-blast rifle is formed to motor drive fan 7, still further synchronous carries out syntropy, synchronous rotation through motor drive insulation support plate 1, and the gas that is heated by the winding heater strip in its surface of the further drive of insulation support plate 1 further provides the drive to the gas after the heating, orders about its heating operation of carrying out the work piece by the front end discharge of hot-blast rifle fast after being heated. Therefore, the utility model discloses can discharge the air current after the heating as early as possible, avoid the inside overheated of hot-blast rifle, avoid the component to become invalid or damage because of the inside overheated of hot-blast rifle. The utility model discloses can increase hot-blast rifle's air output when extension hot-blast rifle life.
Consider that heat distribution progressively increases up forward from the motor to the air outlet along with heating element number of turns one-level in the hot-blast rifle and adds up, therefore the utility model discloses further with each the width of insulating backup pad 1 progressively diminishes from the back forward, forms bigger space at the front end of hot-blast rifle, avoids the heat to gather and causes local overheat in narrow and small space.
The inner sides of the insulating support plates 1 are respectively provided with plug connectors which are matched with each other, the inner sides of the insulating support plates 1 are fixedly inserted into each other, and the rear ends of the inner sides of the insulating support plates 1 are fixedly connected with a driving shaft of a motor of the hot air gun in a fixed insertion state. For example, the inner sides of 3 insulation support plates 1 are connected end to end through 3 groups of insertion grooves and insertion pieces which are perpendicular to the direction of the main body of the insulation support plate 1 and extend in the same direction with the main body of the insulation support plate 1 to form a triangular insertion structure, a cavity is formed in the middle of the insertion structure through the mutual insertion relationship among the 3 insulation support plates 1, therefore, a motor shaft of a motor can be fixed in the air front, the same-direction linkage between the fan and the insulation support plates 1 is realized, and the motor synchronously drives the fan and the insulation support plates 1 to rotate in the same direction to drive and push out the air flow in the hot air gun to the front end.
The above description is only for the embodiments of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which all fall within the scope of the present invention.
Claims (7)
1. A heating device of a heat gun, comprising:
an insulating support plate (1) comprising 3 pieces, the inner sides of which are connected with each other to form a Y-shaped cross section; a plurality of fixing grooves (11) which are parallel to each other are arranged at the front end of the outer side of each insulating support plate (1), at least one clamping groove (12) is respectively arranged at the rear end of the outer side of each insulating support plate (1), and the distance between the clamping groove on each insulating support plate (1) and the rear end of the insulating support plate (1) is kept consistent;
the heating wires (2) are wound towards the front ends of the insulating support plates (1) along the length direction of the insulating support plates (1) and are sequentially clamped in the fixing grooves (11) of the insulating support plates (1);
the thickness of the fastening ring (3) is close to the width of the clamping groove (12), the fastening ring (3) is surrounded outside the insulating support plate (1) which is abutted to form the Y-shaped cross section, and the fastening ring is clamped in the clamping groove (12) at the rear end of the insulating support plate (1) to connect the 3 insulating support plates (1) into a whole; the outer side edge of the fastening ring (3) is provided with a connecting rod (31), and the connecting rod (31) extends out of the fastening ring (3);
the electric brushes (4) are matched with the connecting rods (31) in quantity and are respectively arranged at the far end of each connecting rod (31), the electric brushes (4) are made of conductive materials, and the end parts of the heating wires (2) are respectively and electrically connected with the electric brushes (4);
the stator (5) is arranged on the outer side of the electric brush (4) in a manner of surrounding the fastening ring (3), at least two electrodes (51) are arranged on the surface of the inner wall of the stator, and the electrodes (51) are abutted against the electric brush (4) to form electric connection;
the rear end of an integral structure formed by connecting the insulating support plate (1) is connected with a motor shaft of the hot air gun, when the motor of the hot air gun drives the insulating support plate (1) to rotate in the stator (5), each electric brush (4) sequentially passes through each electrode (51), correspondingly conducts an electric signal of the corresponding electrode (51) to the heating wire (2) connected with the electric brush (4), the heating wire (2) generates heat after being electrified, and the insulating support plate (1) rotationally drives the heat to be discharged to the front end of the hot air gun.
2. The heating device of a heat gun according to claim 1, wherein the outer circumference of the heating wires (2) is coated with an insulating layer, the number of the heating wires is the same as the number of the brushes (4), and two ends of each heating wire are connected between different brushes (4) in pairs.
3. The heating device of a heat gun according to claim 2, wherein the number of the electrodes (51) is the same as the number of the brushes (4), a gap recessed toward the outer wall of the stator (5) is left between the electrodes (51), the gap is made of an insulating material, and the front and rear end edges of the electrodes (51) are further provided with limit protrusions abutting against the front and rear ends of the brushes (4) to prevent the brushes (4) from separating from the inner wall of the stator (5).
4. The heating apparatus of heat gun according to claim 1, wherein the front end of each insulating support plate (1) is provided with a rotation angle the same as the driving direction of the motor of the heat gun, respectively.
5. The heating apparatus of heat gun according to any of claims 1-4, wherein the width of each insulating support plate (1) is gradually decreased from back to front;
the inner sides of the insulating support plates (1) are respectively provided with plug connectors which are matched with each other, the inner sides of the insulating support plates (1) are mutually inserted and fixed, and under the insertion and fixing state, the rear ends of the inner sides of the insulating support plates (1) are fixedly connected with a driving shaft of a motor of the hot air gun.
6. The heating device of a heat gun according to claim 5, wherein the surface of the brush (4) is covered with graphite material; the insulating support plate (1) is made of ceramic materials.
7. Heating device of a heat gun according to claim 6, characterized in that the fastening ring (3) and the connecting rod (31) are made of heat-resistant metal, and the surfaces thereof are uniformly coated with insulating coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020691273.6U CN212253145U (en) | 2020-04-29 | 2020-04-29 | Heating device of hot air gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020691273.6U CN212253145U (en) | 2020-04-29 | 2020-04-29 | Heating device of hot air gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212253145U true CN212253145U (en) | 2020-12-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020691273.6U Active CN212253145U (en) | 2020-04-29 | 2020-04-29 | Heating device of hot air gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212253145U (en) |
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2020
- 2020-04-29 CN CN202020691273.6U patent/CN212253145U/en active Active
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