CN219317237U

CN219317237U - Ceramic heating body support, heating component and hot air component

Info

Publication number: CN219317237U
Application number: CN202320511007.4U
Authority: CN
Inventors: 吴让攀; 李宇帆
Original assignee: Zhongshan Xiaoshi Ceramic Blade Co ltd
Current assignee: Zhongshan Xiaoshi Ceramic Blade Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-07-07
Anticipated expiration: 2033-03-15

Abstract

The utility model discloses a heating component, which comprises a barrel, wherein a conical air guide pipe is arranged in the barrel, an electric heating wire is spirally wound on the outer side of the air guide pipe, a first supporting piece and a second supporting piece which support the air guide pipe in the barrel are arranged on the small end and the large end of the air guide pipe, and a heating air channel from large to small is formed between the air guide pipe and the barrel; the utility model also discloses a hot air component, which comprises the heating component, wherein a fan component is arranged on one side of the heating component corresponding to the small end of the air guide pipe, and an air guide structure for shielding the port where the small end of the air guide pipe is positioned and guiding air to the heating air channel is arranged between the small end of the air guide pipe and the fan component; the utility model also discloses a ceramic heating element bracket, which comprises a conical ceramic tube, wherein the outer side surface of the ceramic tube is spirally provided with spiral grooves or discontinuous winding grooves or tooth grooves which are spirally arranged; the wind turbine has a simple structure, small wind resistance and turbulence and can improve the wind speed and reduce the noise.

Description

Ceramic heating body support, heating component and hot air component

[ field of technology ]

The utility model relates to the field of electric hair dryers, in particular to a ceramic heating body bracket, a heating component and a hot air component.

[ background Art ]

In the conventional electric hair dryer, as shown in fig. 21, an electric heating wire 1a is generally adopted as a heating element, a mica sheet has the characteristics of insulation and high temperature resistance, a cross or rice-shaped mica support 7a formed by the mica sheet is generally used for winding and fixing the electric heating wire, and the mica support is fixed in an air duct cylinder 3a, wherein the mica support is positioned at the inner side of a space wound by the electric heating wire, and various electronic components 4a such as a wire connector, a resistor, a temperature controller, a wire and the like are also arranged on the mica sheet. In order to increase the wind speed, a middle baffle plate 5a is usually added at the wind outlet end in the prior art, and a circle of wind outlet 6a is formed between the wind channel cylinder body and the middle baffle plate so as to boost the air and blow out the air. When the electric hair drier works, air flows through the air duct cylinder, when passing through the mica support, the electric heating wires and the electronic components, great wind resistance can be generated, and irregular turbulence can occur in an inner space surrounded by the electric heating wires in a spiral mode, so that the air generates messy strings in the whole air duct cylinder, the wind speed is reduced, and the electric hair drier has great noise during work, and the comfort of user use is affected.

The present utility model has been made in view of this object.

[ utility model ]

The utility model aims to solve the technical problem of providing the ceramic heating element bracket which has a simple structure, is beneficial to forming an annular heating air duct with a large inlet and a small outlet, isolates the heating wire and the electronic components in different spaces, reduces wind resistance and turbulent flow, improves wind speed and reduces noise.

In order to solve the technical problems, the ceramic heating body bracket comprises a ceramic tube, wherein one end of the ceramic tube is large and gradually reduces towards the other end, a continuous spiral groove is formed on the outer side surface of the ceramic tube around the ceramic tube, or a plurality of positioning strips which are arranged at intervals in a spiral manner are arranged on the outer side surface of the ceramic tube around the ceramic tube, and a discontinuous winding groove is formed between the positioning strips in the spiral manner; or a plurality of fins are integrally formed on the outer side wall of the ceramic tube, and a plurality of tooth grooves which can be clamped in when the heating wires are spirally wound are formed in the fins.

According to the ceramic heating body bracket, the ceramic tube is of a conical structure.

According to the ceramic heating body bracket, the two ends of the ceramic tube are respectively provided with the lead holes.

According to the ceramic heating body support, the large end and/or the small end of the ceramic tube are/is provided with the positioning grooves respectively.

The ceramic heating element support is characterized in that the spiral grooves or tooth grooves are formed by spirally removing materials from the outer side surface of the ceramic tube.

The ceramic heating body support is characterized in that the spiral groove is of a single-spiral, double-spiral or multi-spiral structure.

The utility model aims to provide a heating component which has a simple structure and small wind resistance and turbulence, and is beneficial to improving wind speed and reducing noise.

In order to solve the technical problems, the heating component comprises a barrel, wherein an air guide pipe with one end being large and gradually decreasing towards the other end is arranged in the barrel, an electric heating wire is spirally wound around the pipe wall of the air guide pipe, a spiral positioning structure capable of positioning the electric heating wire during spiral winding is arranged on the pipe wall of the outer side of the air guide pipe, a first supporting piece and a second supporting piece for supporting the air guide pipe in the barrel are arranged at the small end and the large end of the air guide pipe, and a heating air channel from large to small is formed between the air guide pipe and the barrel.

According to the heating component, the first supporting piece and the second supporting piece are respectively provided with the middle limiting parts which are matched with the two ends of the air guide pipe to limit the two ends of the air guide pipe, the outer sides of the middle limiting parts are provided with the through holes for air to enter and exit the heating air duct, the through holes on the small end side of the air guide pipe are large, and the through holes on the large end side of the air guide pipe are small.

In one such heat generating assembly, the outer surfaces of the two ends of the air guide pipe are substantially aligned with the inner side walls of the through holes.

According to the heating component, the middle limiting part is provided with the inserting part which is inserted into the port of the air guide pipe and the shoulder part which presses the end face of the air guide pipe, the shoulder part limits the air guide pipe from the axial direction of the air guide pipe, and the inserting part limits the air guide pipe from the cross section of the air guide pipe.

The heating component is characterized in that the air guide pipe is a conical ceramic pipe, the spiral positioning structure comprises a spiral groove which is arranged on the outer side surface of the ceramic pipe and spirally surrounds the ceramic pipe, and the heating wire is wound along the spiral groove;

or the spiral positioning structure comprises a plurality of positioning strips arranged on the outer side wall of the ceramic tube and arranged at intervals along the spiral direction, spiral winding grooves which are arranged in a spiral mode and are discontinuous are formed among the positioning strips, and positioning strips are arranged between two adjacent circles of heating wires to separate the two adjacent circles of heating wires;

or the spiral positioning structure comprises a plurality of fins which are integrally formed on the outer side wall of the ceramic tube, and a plurality of tooth grooves which can be clamped in when the heating wires are spirally wound are formed in the fins.

In the heating assembly, the buffer pads for separating the ceramic tube from the first support and the second support are arranged between the first support and the second support and the two ends of the ceramic tube.

According to the heating component, the mounting sheet for mounting the electronic component is arranged in the ceramic tube, the lead holes are respectively formed in the two ends of the ceramic tube, and the heating wires are led into the ceramic tube from the outer side of the lead holes and are connected to the mounting sheet in parallel.

The heating component is characterized in that the air guide pipe can be a conical mica pipe, the spiral positioning structure comprises a side wing protruding on the outer side wall of the mica pipe, and a plurality of clamping grooves capable of being clamped in during spiral winding of the heating wires are formed in the side wing.

According to the heating component, the mica sheet is arranged in the mica tube, the side wings are arranged on two sides of the mica sheet, the inclination of the side wings is the same as or basically the same as that of the mica tube, the side walls of the mica tube are provided with the narrow holes, and the side wings penetrate out of the narrow holes and protrude out of the outer side walls of the mica tube.

The utility model aims to provide a hot air assembly which is simple in structure, small in wind loss, wind resistance and turbulence and beneficial to improving wind speed and reducing noise.

In order to solve the technical problems, the hot air component comprises the heating component in any one of the above, wherein a fan component is arranged on one side, corresponding to the small end of the air guide pipe, of the heating component, and an air guide structure for shielding a port where the small end of the air guide pipe is positioned and guiding air to a heating air channel is arranged between the small end of the air guide pipe and the fan component.

The fan assembly comprises a mounting frame, a motor and blades, wherein the mounting frame is provided with an inner ring for mounting the motor, an outer ring for forming a fan air channel with the inner ring, the blades are mounted on the motor and are arranged corresponding to the fan air channel, the blades and the air guide pipe are coaxially mounted, the air guide structure comprises an air guide sleeve arranged between a first supporting piece and the motor and used for guiding air blown out of the fan air channel to a heating air channel, the air guide sleeve, the first supporting piece and a second supporting piece are respectively provided with a heat dissipation air port, and a heat dissipation channel for enabling air blown out by the fan air channel to enter the air guide pipe and flow out is formed among the air guide sleeve, the first supporting piece, the air guide pipe and the second supporting piece;

or the air guide structure comprises an arc top which is arranged on the first supporting piece and covers the port where the small end of the air guide pipe is positioned, the arc top and the second supporting piece are respectively provided with a heat dissipation air port, and a heat dissipation channel which is used for enabling the air part blown out by the air supply duct of the fan to enter the air guide pipe and flow out is formed among the arc top, the air guide pipe and the second supporting piece.

Compared with the prior art, the utility model has the following advantages:

1. the utility model is provided with the spiral groove or discontinuous winding grooves or tooth grooves which are spirally distributed on the outer side surface of the ceramic tube, and when the electric heating wires are wound on the outer side of the ceramic tube, the electric heating wires are partially sunk to limit the electric heating wires, so that the electric heating wires are prevented from moving along the outer surface of the ceramic tube, the electric heating wires are distributed according to the track of the spiral line, and the adjacent two circles of electric heating wires are prevented from being squeezed together.

2. The air guide pipe and the cylinder form an annular heating air channel with a large inlet and a small outlet, when air is blown in from one large end of the heating air channel and blown out from the small end, the cross section area of the heating air channel is gradually reduced from one end to the other end, the air is gradually compressed in the heating air channel and is accelerated to be blown out, in addition, the resistance of the electric heating wire wound on the outer side of the air guide pipe to the air in the heating air channel is gradually reduced from the outlet end to the inlet end, and the air speed is improved. The heating wire spiral winding is in the outside of guide duct, and the inboard space of guide duct can be used to install electronic components, makes the heating wind channel succinct, makes the air through the guide duct keep apart in the outside of guide duct flow, can reduce the windage and the vortex of heating the air in the wind channel, reduces the loss of wind, is favorable to improving wind speed and noise abatement.

3. Because the air can be accelerated and blown out in the heating air duct, the air loss is small, and the output of a motor in the fan assembly is reduced under the condition of meeting the same blowing-out wind speed, and the energy conservation and noise reduction are facilitated.

4. The buffer cushion which separates the middle limiting part from the ceramic tube is arranged between the middle limiting part and the ceramic tube, the buffer cushion can resist high temperature, is soft and elastic, can protect the ceramic tube, and can effectively prevent the ceramic tube from being broken during vibration and falling.

5. The air guide pipe is a conical mica pipe, the spiral positioning structure comprises a lateral wing protruding on the outer side wall of the mica pipe and provided with a clamping groove, the weight is light, the internal and external heat insulation is good, and the structure is simple.

[ description of the drawings ]

The utility model is described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a front view of the present utility model;

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a cross-sectional view of an embodiment of the present utility model having a windband taken along the direction B-B in FIG. 1;

FIG. 4 is an exploded view of an embodiment of the utility model employing ceramic tubes;

FIG. 5 is a schematic view of the structure of the present utility model;

FIG. 6 is a schematic view showing the structure of an embodiment of a ceramic heat-generating body holder of the present utility model;

FIG. 7 is a schematic view showing the structure of another embodiment of a ceramic heat-generating body holder of the present utility model;

FIG. 8 is a schematic structural view of a third embodiment of a ceramic heat-generating body holder of the present utility model;

FIG. 9 is an exploded view of an embodiment of the present utility model employing mica tubing;

FIG. 10 is a cross-sectional view of an embodiment of the utility model employing mica tubing;

FIG. 11 is a schematic view of a first mating pattern of mica pipes and mica sheets;

FIG. 12 is a schematic view of a second mating pattern of mica pipes and mica sheets;

FIG. 13 is a cross-sectional view of a second mating pattern of mica pipes and mica sheets;

FIG. 14 is a schematic view of a third configuration of a mica tube and mica sheet;

fig. 15 is a schematic structural view of a linear heating wire;

fig. 16 is a schematic structural view of a wave heating wire;

fig. 17 is a schematic structural view of a heating wire of a spring structure;

fig. 18 is a schematic view of a structure of an embodiment of winding a ceramic tube with a wave heating wire;

FIG. 19 is a schematic view of an expanded configuration of a manufacturing process for mica pipes;

FIG. 20 is a schematic view of an expanded configuration of another manufacturing process for mica pipes;

fig. 21 is a reference schematic diagram of a heat generating structure in the related art.

[ detailed description ] of the utility model

The utility model is further described below with reference to the accompanying drawings:

the heating element shown in fig. 1 to 18 comprises a barrel 1, an air guide pipe 2 with one end being large and gradually decreasing towards the other end is arranged in the barrel 1, an electric heating wire 3 is spirally wound around the pipe wall of the air guide pipe 2, a spiral positioning structure capable of positioning the electric heating wire 3 during spiral winding is arranged on the pipe wall of the outer side of the air guide pipe 2, so that the electric heating wire 3 is prevented from moving in the axial direction to enable two adjacent circles of electric heating wires to be in contact, a first supporting piece 4 and a second supporting piece 5 for supporting the air guide pipe 2 in the barrel 1 are arranged at the small end and the large end of the air guide pipe 2, and a heating air duct 10 from large to small is formed between the air guide pipe 2 and the barrel 1.

For better heat insulation, a mica sleeve 11 close to the inner wall of the cylinder 1 is arranged in the cylinder 1.

When air is blown in from the large end of the heating air duct 10 and blown out from the small end, the cross-sectional area of the heating air duct 10 gradually decreases from one end to the other end, the air is gradually compressed and accelerated in the heating air duct 10, and in addition, the resistance to the air in the heating air duct 10 is gradually reduced from the outlet end to the inlet end by the heating wire 3 wound on the outer side of the air guide pipe 2, which is beneficial to increasing the air speed. The heating wire 3 is spirally wound on the outer side of the air guide pipe 2, the space on the inner side of the air guide pipe 2 can be used for installing electronic components, a heating air channel is simplified, air passing through the heating wire is isolated by the air guide pipe 2 and flows on the outer side of the air guide pipe 2, the wind resistance and the turbulent flow of the air in the heating air channel 10 can be reduced, the loss of wind is reduced, and the improvement of wind speed and the noise reduction are facilitated.

And because the air can be accelerated and blown out in the heating air duct 10, the air loss is small, and the output of a motor in the fan assembly is reduced under the condition of meeting the same blowing-out wind speed, and the energy conservation and noise reduction are facilitated.

The structure of the heating wire 3 may be a linear heating wire as shown in fig. 15; the structure of the heating wire 3 may be a wave heating wire as shown in fig. 16; or the structure of the heating wire 3 may also be a spring-structured heating wire as shown in fig. 17.

Preferably, the first supporting member 4 and the second supporting member 5 are respectively provided with a middle limiting portion 41 which is matched with two ends of the air guide pipe 2 to limit two ends of the air guide pipe 2, a through hole 42 for air to enter and exit the heating air duct 10 is formed in the outer side of the middle limiting portion 41, the through hole 42 on the small end side of the air guide pipe 2 is large, and the through hole 42 on the large end side of the air guide pipe 2 is small, so that air is introduced into the large opening and discharged from the small opening of the heating air duct 10, and meanwhile wind resistance during air inlet is reduced.

Preferably, the outer surfaces of the two ends of the air guiding pipe 2 are substantially aligned with the inner side walls of the through holes 42, so that the wind resistance of the heating air duct 10 during air inlet and air outlet is reduced, noise is reduced, and wind speed is increased.

Preferably, the middle limiting part 41 is provided with an inserting part 43 inserted into a port of the air guide pipe 2 and a shoulder part 44 pressed towards the end surface of the air guide pipe 2, the shoulder part 44 limits the air guide pipe 2 from the axial direction of the air guide pipe 2, and the inserting part 43 limits the air guide pipe 2 from the cross section of the air guide pipe 2, so that the structure is simple.

One of the first support 4 and the second support 5 may be integrally formed with the cylinder 1. Of course, the first supporting member 4 and the second supporting member 5 may be both separate parts for assembly and installation, and when the first supporting member 4 and the second supporting member 5 are both separate parts, the first supporting member 4 and the second supporting member 5 are each provided with an outer ring on the outer side of the intermediate limiting portion 41, an annular hole is formed between the outer ring and the intermediate limiting portion 41, the outer ring and the intermediate limiting portion 41 are connected by ribs, and the ribs divide the annular hole into individual through holes 42.

As an embodiment of the air guide pipe 2, as shown in fig. 2 to 4 and examples of fig. 6 to 8, the air guide pipe 2 is a tapered ceramic pipe 2a, and the ceramic pipe 2a is made of an insulating ceramic material, which has the characteristics of insulation and high temperature resistance.

Preferably, as shown in the embodiment of fig. 2 and 6, the spiral positioning structure comprises a spiral groove 21 which is arranged on the outer side surface of the ceramic tube 2a and spirally arranged around the ceramic tube 2a, and the heating wire 3 is wound along the spiral groove 21, so that a heating air channel is simpler, and wind resistance and turbulence are smaller;

or, as shown in the embodiment of fig. 7, the spiral positioning structure includes positioning strips 24 disposed on the outer sidewall of the ceramic tube 2a, where the positioning strips 24 are multiple and spaced along the spiral direction, and spiral winding grooves 25 are formed between the positioning strips 24, and positioning strips 24 are disposed between two adjacent turns of heating wires 3 to separate the two adjacent turns of heating wires 3;

the size of the grooves of the spiral groove 21 or the size of the winding groove 25 corresponds to the structure of the heating wire, so that the heating wire can be partially immersed, and the heating wire is prevented from moving along the outer surface of the ceramic tube 2a, so that the heating wire is distributed according to a spiral track, and the two adjacent circles of heating wires are prevented from being squeezed together.

The spiral groove 21 may be formed by a spiral material removal process from the outer side surface of the ceramic tube 2a by milling. The spiral groove 21 has a single spiral, double spiral or multiple spiral structure, and accordingly, the heating wire may be wound in a single wire, double wire or multiple wires on the outer side of the ceramic tube 2 a. Likewise, the winding slot 25 may be of single-spiral, double-spiral or multi-spiral configuration.

Or, as shown in the embodiment of fig. 8, the spiral positioning structure includes a plurality of fins 26 integrally formed on the outer side wall of the ceramic tube 2a, a plurality of tooth grooves 27 capable of being clamped in during spiral winding of the heating wire 3 are formed on the fins 26, and the inclination of the fins 26 is the same as or substantially the same as that of the mica tube 2b, so as to facilitate winding of the wave heating wire.

The heating wires 3 are distributed in a conical shape along the ceramic tube 2a, so that the wind resistance is small, and the wind speed is improved and the noise is reduced.

Preferably, a cushion pad 6 for separating the ceramic tube 2a from the first support 4 and the second support 5 is provided between the first support 4 and the second support 5 and both ends of the ceramic tube 2a, the cushion pad 6 is preferably a silica gel pad, the silica gel pad can withstand the high temperature of 200 ℃ or higher, and the silica gel pad is soft and elastic, so that the ceramic tube 2a can be protected. Of course, other cushion pads than those made of silicone materials that can withstand high temperatures and are soft and elastic are also suitable.

The large end and/or the small end of the ceramic tube 2a are/is provided with a positioning groove 22, the first support piece 4 and/or the second support piece 5 corresponding to one side provided with the positioning groove 22 are/is provided with a positioning boss 45 clamped in the positioning groove 22, the positioning boss 45 limits the rotation of the ceramic tube 2a, and the buffer pad 6 is sleeved on the outer side of the insertion part 43, so that the ceramic tube is simple in structure and convenient to assemble.

As shown in the embodiment of fig. 2 to 4, in order to facilitate the installation of the electronic components, the ceramic tube 2a is provided therein with a mounting plate 7 for mounting the electronic components, the mounting plate 7 may be made of mica material, the two ends of the ceramic tube 2a are respectively provided with a lead hole 23, and the heating wire 3 is led from the outside of the ceramic tube 2a to the inside of the ceramic tube 2a from the lead hole 23 and is connected to the mounting plate 7.

As shown in fig. 4 and 6, a part of the positioning groove 22 may be introduced as a lead hole 23 from the outside of the ceramic tube 2a to the inside of the ceramic tube 2a, thereby simplifying the structure of the ceramic tube 2 a.

As shown in fig. 6, when the heating wire 3 is positioned by the spiral groove 21, the lead hole 23 is communicated with the spiral groove 21, so that the heating wire 3 passes through the lead hole 23 from the spiral groove 21, thereby being beneficial to limiting the heating wire 3.

As another implementation manner of the air guide pipe 2, as shown in fig. 9 to 14, the air guide pipe 2 is a tapered mica pipe 2b, the spiral positioning structure includes a side wing 2b1 protruding on the outer side wall of the mica pipe 2b, and a plurality of clamping grooves 2b2 capable of being clamped in during spiral winding of the heating wire 3 are formed in the side wing 2b 1.

Preferably, the mica tube 2b is internally provided with a mica sheet 28, two sides of the mica sheet 28 are provided with side wings 2b1, the inclination of the side wings 2b1 is the same as or basically the same as that of the mica tube 2b, so that the electric heating wires are distributed in a conical shape, the side wall of the mica tube 2b is provided with a narrow hole 2b3, and the side wings 2b1 penetrate out of the narrow hole 2b3 and protrude out of the outer side wall of the mica tube 2b, so that the structure is simple.

As shown in fig. 9 and 11, the mica tube 2b is a continuous tube, the narrow holes 2b3 are all formed on the inner sides of two ends of the mica tube 2b, and are closed-loop elongated holes, the side wings 2b1 are located between two ends of the mica sheet 28, and two ends of the mica sheet 28 are provided with shoulder 281 capable of being clamped on the inner wall of the mica tube 2b to prevent the mica sheet 28 from moving laterally. During installation, the mica tube 2b has certain deformation capacity during forced extrusion, and the mica tube 2b and the mica sheet 28 are large at one end and small at the other end, so that the mica sheet can be installed from the large end of the mica tube 2b, the mica tube is not deformed or deformed very little at the beginning, the largest deformation is only generated when the large end of the side wing 2b1 is installed, the height of the protrusion of the side wing 2b1 outside the mica tube 2b can be designed in the deformation capacity range of the mica tube 2b, and the mica tube is not damaged when the mica tube is extruded into the mica tube 2b, and the mica tube can be obtained through experiments.

As shown in fig. 20, the mica tube 2b may be formed by winding a fan-shaped sheet, and may be formed by fastening a continuous tube at both ends of the fan-shaped sheet by means of a structure of a snap 2b5 and a snap hole 2b6, or may be formed by adhesively fixing both ends of the fan-shaped sheet. The slit 2b3 may be formed by cutting a segment, or may be formed by cutting a mica tube 2 b.

Alternatively, as shown in fig. 14, the mica tube 2b is a discontinuous tube, which is broken at one side, and may be wound in a cone shape by a fan-shaped sheet as shown in fig. 19, and is broken at the joint of two ends of the fan-shaped sheet, the two ends of the mica tube 2b are provided with an upper positioning member 29 and a lower positioning member 30 for holding the mica tube 2b from two ends to prevent the mica tube 2b from being deformed, the narrow hole 2b3 is formed inside the two ends of the mica tube 2b, and is a closed-loop elongated hole, the side wing 2b1 is located between the two ends of the mica sheet 28, and the two ends of the mica sheet 28 are provided with a shoulder 281 capable of being clamped on the inner wall of the mica tube 2b to prevent the mica sheet 28 from moving laterally. When the mica tube 2b is installed, the mica sheet 28 is installed after the mica tube 2b can be opened from the fracture, and the mica tube 2b is held by the upper positioning piece 29 and the lower positioning piece 30 at the two ends of the mica tube 2b, so that the height of the side wing 2b1 protruding outside the mica tube 2b is not limited by the mica tube 2 b.

Alternatively, as shown in the embodiment of fig. 12 and 13, the mica tube 2b is a continuous tube, the slot 2b3 extends from the small end of the mica tube 2b to near the large end, the slot 2b3 is a strip-shaped hole opened at the small end of the mica tube 2b, the slot 2b3 divides the middle upper portion of the mica tube 2b into a plurality of arc-shaped pieces 2b4, the mica piece 28 is inserted in the slot 2b3, and an upper positioning piece 29 for clamping the arc-shaped pieces 2b4 to prevent the small end of the mica tube 2b from being deformed is arranged on the small end of the mica tube 2 b.

Preferably, the upper positioning member 29 is integrally formed on the first supporting member 4.

The hot air assembly shown in fig. 1 to 5 and 10 comprises the heating assembly and the fan assembly 8, wherein the fan assembly 8 is arranged on one side corresponding to the small end of the air guide pipe 2. The passageway when hairdryer goes out wind mainly is in heating wind channel 10, in order to make the wind that fan assembly 8 blown out get into heating wind channel 10 better, be equipped with the wind-guiding structure that is used for sheltering from the port that the tip of guide duct 2 was located and leads the wind to heating wind channel 10 between the tip of guide duct 2 and the fan assembly.

The fan assembly 8 comprises a mounting frame 81, a motor 82 and blades 83, wherein the mounting frame 81 is provided with an inner ring 811 for mounting the motor 82, an outer ring 812 for forming a fan air channel 813 with the inner ring 811, the blades 83 are mounted on the motor 82 and are arranged corresponding to the fan air channel 813, and the blades 83 and the air guide pipe 2 are mounted coaxially.

As shown in the embodiment of fig. 3, the air guiding structure includes an air guiding sleeve 9 disposed between the first support 4 and the motor 82 for guiding the air blown out by the fan duct 813 to the heating duct 10, so as to reduce the air loss. In order to dissipate heat of electronic components in the air guide pipe 2, the air guide sleeve 9, the first supporting piece 4 and the second supporting piece 5 are respectively provided with a heat dissipation air opening 47, and a heat dissipation channel for enabling air blown out by the air supply duct 813 to enter the air guide pipe 2 and flow out is formed among the air guide sleeve 9, the first supporting piece 4, the air guide pipe 2 and the second supporting piece 5, and a small part of air blown out by the air supply duct 813 enters from the heat dissipation air opening 47 of the air guide sleeve 9 and passes through the heat dissipation air opening 47 on the first supporting piece 4 to enter the air guide pipe 2 and then flows out through the heat dissipation air opening 47 on the second supporting piece 5 so as to dissipate heat of the electronic components in the air guide pipe 2.

Or, as shown in the embodiment of fig. 2, as another implementation manner of the air guiding structure, the air guiding structure includes an arc top 46 disposed on the first supporting member 4 and covering a port where the small end of the air guiding tube 2 is located, and heat dissipation air ports 47 are respectively disposed on the arc top 46 and the second supporting member 5, and a heat dissipation channel for allowing the air blown by the air supply duct 813 to enter the air guiding tube 2 and flow out is formed among the arc top 46, the air guiding tube 2 and the second supporting member 5. Most of the wind blown onto the arc top 46 is guided to the outside by the arc top 46, and a small part of the wind can flow into the ceramic tube 2a through the heat dissipation air port 47 on the arc top 46 and then flows out through the heat dissipation air port 47 on the second support 5 so as to dissipate heat of electronic components in the air guide tube 2.

The heat dissipation tuyere 47 on the second support 5 may be a hole penetrating directly outside the second support 5 as shown in fig. 5; of course, the heat dissipation air port 47 on the second support member 5 may also be a hole penetrating out of the heating air duct 10 near the air outlet, as shown in fig. 3 and 4.

The hot air assembly has small wind loss, small wind resistance and turbulence of air in the heating air duct 10, and is beneficial to improving the wind speed and reducing the noise.

Claims

1. A heat generating component, characterized in that: including barrel (1), be equipped with in barrel (1) one end big and towards guide duct (2) that the other end reduces gradually, the outside of guide duct (2) has heating wire (3) around its pipe wall spiral winding, be equipped with the spiral location structure that can fix a position when power supply filament (3) spiral winding on the outside pipe wall of guide duct (2), be provided with on the tip and the large end of guide duct (2) and prop up first support piece (4) and second support piece (5) in barrel (1) with guide duct (2), form between guide duct (2) and barrel (1) by big heating wind channel (10) to small.

2. A heat generating component as defined in claim 1, wherein: the air guide pipe (2) is a conical ceramic pipe (2 a), the spiral positioning structure comprises a spiral groove (21) which is arranged on the outer side surface of the ceramic pipe (2 a) and spirally arranged around the ceramic pipe (2 a), and the electric heating wire (3) is wound along the spiral groove (21);

or the spiral positioning structure comprises positioning strips (24) arranged on the outer side wall of the ceramic tube (2 a), a plurality of positioning strips (24) are arranged at intervals along the spiral direction, spiral wire winding grooves (25) which are arranged in a spiral mode and are discontinuous are formed between the positioning strips (24), and positioning strips (24) are arranged between two adjacent circles of heating wires (3) to separate the two adjacent circles of heating wires (3);

or the spiral positioning structure comprises a plurality of fins (26) which are integrally formed on the outer side wall of the ceramic tube (2 a), and a plurality of tooth grooves (27) which can be clamped in when the heating wires (3) are spirally wound are formed in the fins (26).

3. A heat generating component as defined in claim 2, wherein: and buffer pads (6) for separating the ceramic tube (2 a) from the first support piece (4) and the second support piece (5) are arranged between the first support piece (4) and the second support piece (5) and two ends of the ceramic tube (2 a).

4. A heat generating component as defined in claim 2, wherein: the ceramic tube (2 a) is internally provided with a mounting sheet (7) for mounting electronic components, two ends of the ceramic tube (2 a) are respectively provided with a lead hole (23), and the electric heating wire (3) is led into the inner side of the ceramic tube (2 a) from the outer side of the ceramic tube (2 a) from the lead holes (23) and is connected to the mounting sheet (7) in parallel.

5. A heat generating component as defined in claim 1, wherein: the air guide pipe (2) is a conical mica pipe (2 b), the spiral positioning structure comprises a side wing (2 b 1) protruding on the outer side wall of the mica pipe (2 b), and a plurality of clamping grooves (2 b 2) capable of being clamped in when the heating wires (3) are spirally wound are formed in the side wing (2 b 1).

6. A heat generating component as defined in claim 5, wherein: the inside of mica tube (2 b) is equipped with mica sheet (28), the both sides of mica sheet (28) have flank (2 b 1), the inclination of flank (2 b 1) is the same or basically the same with the inclination of mica tube (2 b), be equipped with narrow hole (2 b 3) on the lateral wall of mica tube (2 b), flank (2 b 1) are worn out and are protruding on mica tube (2 b) lateral wall from narrow hole (2 b 3).

7. A heat generating component as defined in any one of claims 1 to 6, wherein: the air conditioner is characterized in that the first supporting piece (4) and the second supporting piece (5) are respectively provided with a middle limiting part (41) which is matched with two ends of the air guide pipe (2) and limits two ends of the air guide pipe (2), the outer side of the middle limiting part (41) is provided with a through hole (42) for air to enter and exit the heating air duct (10), the through hole (42) on one side of the small end of the air guide pipe (2) is large, and the through hole (42) on one side of the large end of the air guide pipe (2) is small.

8. A heat generating component as defined in claim 7, wherein: the outer surfaces of the two ends of the air guide pipe (2) are basically aligned with the inner side walls of the through holes (42).

9. A heat generating component as defined in claim 7, wherein: the middle limiting part (41) is provided with an inserting part (43) inserted into a port of the air guide pipe (2) and a shoulder part (44) pressed towards the end face of the air guide pipe (2), the shoulder part (44) limits the air guide pipe (2) from the axial direction of the air guide pipe (2), and the inserting part (43) limits the air guide pipe (2) from the cross section of the air guide pipe (2).

10. A hot air assembly, characterized in that: the air guide structure comprises a heating component in any one of claims 1 to 9, wherein a fan component (8) is arranged on one side, corresponding to the small end of the air guide pipe (2), of the heating component, and an air guide structure for shielding a port where the small end of the air guide pipe (2) is positioned and guiding air to a heating air duct (10) is arranged between the small end of the air guide pipe (2) and the fan component.

11. The hot air assembly according to claim 10, wherein: the fan assembly (8) comprises a mounting frame (81), a motor (82) and blades (83), wherein the mounting frame (81) is provided with an inner ring (811) for mounting the motor (82), an outer ring (812) for forming a fan air channel (813) with the inner ring (811), the blades (83) are mounted on the motor (82) and are arranged corresponding to the fan air channel (813), the blades (83) and the air guide pipe (2) are mounted coaxially, the air guide structure comprises an air guide sleeve (9) which is arranged between a first supporting piece (4) and the motor (82) and is used for guiding air blown out by the fan air channel (813) to a heating air channel (10), the air guide sleeve (9), the first supporting piece (4) and the second supporting piece (5) are respectively provided with a heat dissipation air inlet (47), and a heat dissipation channel for allowing air part blown out by the fan (813) to enter the air guide pipe (2) is formed among the air guide sleeve (9), the first supporting piece (4), the air guide pipe (2) and the second supporting piece (5);

or the air guide structure comprises an arc top (46) which is arranged on the first supporting piece (4) and covers the port where the small end of the air guide pipe (2) is located, heat dissipation air inlets (47) are respectively arranged on the arc top (46) and the second supporting piece (5), and a heat dissipation channel for enabling air blown out by the air supply air channel (813) to enter the air guide pipe (2) and flow out is formed among the arc top (46), the air guide pipe (2) and the second supporting piece (5).

12. A ceramic heater support, characterized in that: the ceramic tube comprises a ceramic tube (2 a), wherein one end of the ceramic tube (2 a) is large and gradually reduces towards the other end, a continuous spiral groove (21) is formed around the ceramic tube (2 a) on the outer side surface of the ceramic tube (2 a), or a plurality of positioning strips (24) which are arranged at intervals and spirally are arranged around the ceramic tube (2 a) on the outer side surface of the ceramic tube (2 a), and spiral-arranged discontinuous winding grooves (25) are formed among the positioning strips (24); or a plurality of fins (26) are integrally formed on the outer side wall of the ceramic tube (2 a), and a plurality of tooth grooves (27) which can be clamped in when the heating wires (3) are spirally wound are formed in the fins (26).