Low radiation electric hair dryer

Abstract

The application provides a low-radiation electric hair dryer, which comprises a shell and a handle, the inside of the shell and the handle is communicated, the shell is provided with an air outlet, a front heat dissipation hole and a rear heat dissipation hole, the inside is provided with a low-radiation heating assembly, the handle is provided with an air inlet, and an air inlet motor is arranged on the handle; the handle is further provided with a control assembly electrically connected with the low-radiation heating assembly and the air inlet motor; a temperature insulation sleeve is arranged between the heating assembly and the shell, one end of the temperature insulation sleeve is provided with a baffle, the low-radiation heating assembly is provided with a heat conduction device which is respectively directed to the front heat dissipation hole and the rear heat dissipation hole, and a guide structure is arranged on the low-radiation heating assembly; the guide structure and the baffle are arranged to change the air duct, so that the heating temperature of the air is higher under the same power, that is, the power consumed is lower under the same blowing temperature, and the electric hair dryer is more energy-saving; and the use of the low-radiation heating assembly does not generate an electromagnetic field due to the electrification of the resistance heating wire, so that the low-radiation of the electric hair dryer is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric hair dryer, in particular to a low radiation electric hair dryer. BACKGROUND

[0002] The hair dryer is composed of a set of heating components and a high-speed fan, i.e. an air inlet motor and heating components, when powered on, the heating components will generate heat, the fan will suck air from the outside through the air inlet, and the air blown out will pass through the heating components to be heated, and then the hot air will be blown out from the air outlet for use.

[0003] The existing electric hair dryer generally has an air outlet at the front end of the shell and an air inlet at the rear end, the air inlet motor and the heating components are sequentially arranged between the air outlet and the air inlet, and the control component is arranged on the handle, after starting, the air inlet motor will suck the air from the outside through the air inlet, and the newly entered air will be heated by the heating components, and then the hot air will be pushed out from the air outlet by the air pressure,

[0004] so as to realize the function of blowing hot air of the electric hair dryer, the structure of the air duct is from the air inlet to the heating components to the air outlet, the heat conduction between the heating components and the air is affected by the contact time and the temperature of the heating components, the contact time is affected by the air speed, specifically, the power of the air inlet motor, and the temperature of the heating components is related to the power of the heating components, however, the use of the electric hair dryer generally has a fixed requirement for the air speed, and the temperature of the air cannot be improved by reducing the air speed, and the temperature requirement of the air must be met under constant air speed,

[0005] Since the contact time of the air with the heating components for heat conduction is limited, the heat conduction efficiency between the heating components and the air is low, in order to meet the temperature requirement of the outlet air, the power of the heating components is generally increased to increase the temperature of the heating components, so as to increase the temperature of the air, however, the power required by the heating components is high in such air duct design, and the power of the electric hair dryer is high, i.e. the power consumption is high and the electric hair dryer is not energy-saving, therefore, a new air duct design is needed to solve this problem.

[0006] The heating components used in the traditional electric hair dryer are generally composed of resistance heating wires wound on asbestos supports or mica supports, such structure can heat the air, but oxidation and fracture and dust falling will occur after a period of use, the hot air blown out by the electric hair dryer with the asbestos and / or mica supports will contain teratogenic asbestos fiber particles and carbon dust, and the resistance heating wires will produce electromagnetic field and electromagnetic radiation during power-on and heating, which will cause certain harm to the human body after long-term use, therefore, how to reduce the radiation of the electric hair dryer is also a problem to be solved. SUMMARY

[0007] The present application aims to provide a low-radiation electric hair dryer with a wind channel design capable of reducing power consumption and improving heating efficiency and capable of reducing radiation.

[0008] To achieve the above-mentioned purpose, the technical solution of the present application is as follows:

[0009] The low-radiation electric hair dryer comprises a shell and a handle, the inside of the shell and the handle is communicated, the front end of the shell is provided with an air outlet and a front heat dissipation hole, the rear end of the shell is provided with a rear heat dissipation hole, the inside of the shell is provided with a low-radiation heating assembly, the handle is provided with an air inlet, and an air inlet motor is arranged on the handle; the handle is further provided with a control assembly connected with the low-radiation heating assembly and the air inlet motor; a temperature insulation sleeve is arranged between the heating assembly and the shell, one end of the temperature insulation sleeve is located between the front end edge of the shell and the outer edge of the air outlet, and the other end of the temperature insulation sleeve is provided with a baffle; a heat conduction device is arranged on the low-radiation heating assembly and is directed to the front heat dissipation hole and the rear heat dissipation hole respectively; and a guide structure is further arranged on the temperature insulation sleeve and is located between the inside passage of the shell and the handle and guides the air to the baffle.

[0010] Through the above structure, the electric hair dryer sucks in air outside through the air inlet of the handle under the action of the air inlet motor, and the air enters the shell through the handle; the air is heated by the heating assembly arranged in the inside of the shell until the shell is filled with hot air, and then new air continuously enters; under the guidance of the guide structure, the originally heated air is blown to the baffle due to air pressure; the baffle blocks the air, so that the direction of the air changes and the air is blown forward again; the air is heated again by the heating assembly; the originally new air is heated by the heating assembly or the original hot air in the shell when the originally new air pushes the original air; the air is heated again by the new air and then blown out from the air outlet; that is, the internal wind channel structure of the electric hair dryer is changed by adding the baffle and the guide structure; the air enters the shell through the air inlet and is guided to the baffle through the guide structure; the air is reversely pressed again by the baffle and then passes through the heating assembly again and is finally blown out from the air outlet; thus, in the heating process, the heating assembly of the electric hair dryer heats the original air in the shell; the heated air is pushed by the new air entering the shell; the air channel is formed between the guide structure and the baffle; the air flows twice and is heated again; the air is blown out from the air outlet after being heated twice; under the condition of the same power, the contact time is longer and the heating temperature of the air is higher; under the condition of the same temperature of the blown air, the power consumption is lower, which is more energy-saving; the low-radiation heating assembly is adopted; compared with the traditional heating assembly, the heated air of the electric hair dryer will not contain the teratogenic asbestos fiber particles and carbon dust falling from the asbestos and / or mica support or due to the aging of the asbestos and / or mica; when the electric hair dryer is powered on and heated, the electromagnetic field generated by the resistance heating wire will not be generated, so that the low-radiation of the electric hair dryer is realized.

[0011] Preferably, the hair dryer is further provided with a protective device, the protective device comprising a front cover and a rear cover, the front cover being arranged on the front heat dissipation hole at the front end of the hair dryer body, and the rear cover being arranged on the rear heat dissipation hole at the rear end of the hair dryer body.

[0012] Therefore, by arranging the front and rear heat dissipation holes at the front and rear ends of the hair dryer shell, the heat dissipation requirement is ensured, and the front and rear covers are fixed, so that the user or children will not put their fingers into the heat dissipation holes and be scalded.

[0013] Preferably, the heat conduction device comprises a front heat conduction piece and a rear heat conduction piece, the air outlet at the front end of the shell is an annular air outlet hole, the front heat dissipation hole is arranged in the air outlet at the front end of the shell, the rear heat dissipation hole is arranged at the rear end of the shell, one end of the front heat conduction piece is arranged in the front heat dissipation hole, and the other end of the front heat conduction piece is in contact with and fixed to the low-radiation heating assembly, one end of the rear heat conduction piece is arranged in the rear heat dissipation hole, and the other end of the rear heat conduction piece is in contact with and fixed to the low-radiation heating assembly.

[0014] Therefore, by changing the air inlet, the front end of the hair dryer body is arranged with the front heat dissipation hole, the air outlet ring hole is arranged around the front heat dissipation hole, the rear end is arranged with the rear heat dissipation hole, and the front and rear heat conduction pieces are arranged in the front and rear heat dissipation holes and connected to the low-radiation heating assembly, so as to receive the heat of the low-radiation heating assembly, guide the heat of the low-radiation heating assembly to the front and rear heat conduction pieces, and dissipate the heat from the front and rear heat dissipation holes, thereby realizing effective heat conduction of the hair dryer, avoiding overheating to cause self-protection of the hair dryer and reduction of the service life of the heating assembly, and improving the use effect and service life of the hair dryer.

[0015] Preferably, the low-radiation heating assembly comprises a heating body, a temperature-resistant support, and a conductive wire, the heating body is symmetrically arranged on the temperature-resistant support, the heating body comprises an insulating layer and a heating conductor, the insulating layer is wrapped on the surface of the heating conductor and has a wiring position, and the conductive wire is connected to the heating body through the wiring position; and the conductive wire is connected to all the heating bodies in a series and / or parallel manner and connected to the control assembly.

[0016] Therefore, in addition to the function of setting the heating sheet, the temperature-resistant support is conveniently arranged behind the hair dryer, and the heat of the heating sheet is guided to the heat conduction device, and then is emitted from the front and rear heat dissipation holes, so that the insulation layer on the heating body is prevented from being broken due to long-time overheating. The heating body includes an insulation layer and a heating conductor. By arranging the heating conductor in the insulation layer, the heating conductor is prevented from contacting air, so that the oxidation and fracture of the heating conductor and the falling of carbon dust are avoided. Meanwhile, the electromagnetic field generated by the energized heating conductor is isolated from the outside, so that the electromagnetic radiation generated by the energized heating conductor is blocked, and the radiation of the hair dryer using the heating assembly is greatly reduced. The insulation layer is an insulation medium layer composed of insulating ceramic, high-molecular high-temperature medium or high-temperature insulating wood, and the heating conductor is a resistance sheet or a metal heating conductor composed of iron-nickel, iron-chromium or iron-tungsten alloy.

[0017] Preferably, the temperature-resistant support includes an upper end setting piece, a lower end setting piece and connecting support ribs. A plurality of groups of connecting support ribs are arranged between the upper end setting piece and the lower end setting piece. The upper ends of the connecting support ribs are fixedly connected to the outer surface of the upper end setting piece, and the lower ends of the connecting support ribs are fixedly connected to the outer surface of the lower end setting piece. The upper end setting piece and the lower end setting piece are each provided with a fixing structure of the heating body.

[0018] Therefore, the hollow main body of the temperature-resistant support formed by the upper end setting piece, the lower end setting piece and the connecting support ribs plays a fixing role for the heating conductor. After the hair dryer is turned off after use, the temperature-resistant support plays a role of connecting the heat conduction device and guiding the heat of the heating sheet to the heat conduction device, and then emitting the heat from the front and rear heat dissipation holes. Compared with the traditional cylindrical support, the hollow design of the support itself has a wider heat dissipation surface, which is more conducive to the heat dissipation of the support itself, has higher heat dissipation performance, and has a small overall volume. During the heating process, the heat storage is small, that is, the heat capacity is small, which is conducive to rapid cooling. Therefore, the support has self-heat dissipation space under the condition of ensuring the fixing role, so as to accelerate the temperature dissipation of the support itself and further accelerate the heat conduction and heat dissipation functions.

[0019] Preferably, a heat insulation layer is arranged between the heat insulation sleeve and the shell.

[0020] Therefore, by arranging the heat insulation layer, the heat insulation layer can be an air layer or a layer of other heat insulation filling materials, so as to reduce the heat propagation efficiency and improve the heat insulation effect of the heat insulation sleeve.

[0021] Preferably, the guide structure is a guide hole formed in the heat insulation sleeve or a protruding guide table arranged on the heat insulation sleeve. The inner wall of the guide hole or the protruding guide table is inclined to the baffle.

[0022] Therefore, by the design of the inclined surface or the inclined arc surface, the flow direction of the wind is changed after the wind passes through, and the wind pressure direction is also changed, so that the purpose of changing the wind channel to the baffle is achieved.

[0023] Preferably, the rotating shaft of the air inlet motor is provided with a plurality of winding frames, the coil of the air inlet motor is wound on a group of winding frames in a way of winding the upper end positively and winding the lower end reversely, and then wound on all winding frames, or wound on a group of winding frames in a way of winding the inner and outer ends positively and reversely, and then wound on all winding frames, or wound on a first group of winding frames in a way of positive winding, and reversely wound on the winding frames symmetrically arranged on the first group of winding frames, and then wound on all winding frames.

[0024] Therefore, by changing the winding method and the current direction, the air inlet motor generally comprises a fan, a motor cavity, a rotating shaft and a shell, the motor cavity is arranged in the shell, a gap is left between the motor cavity and the shell to form a wind channel, a stator core and a winding frame are arranged between the motor cavity and the rotating shaft, a coil is wound on the winding frame, the stator core, the winding frame and the coil arranged above form a motor structure, and the motor rotates after being electrified to drive the fan, the fan sucks the external wind and blows it out through the wind channel, thereby playing a role of directional blowing, compared with the direct single-direction winding of the ordinary motor, the air inlet motor changes the winding method and the current direction, thereby reducing the electromagnetic interference, making the radiation of the air outlet of the hair dryer motor zero when the motor works and is not heated, and reducing the radiation of the hair dryer. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0026] Figure 2 It is a sectional view of the overall structure of the present application.

[0027] Figure 3 It is a schematic diagram of the wind channel of the present application.

[0028] Figure 4 It is a schematic diagram of the low-radiation heating assembly of the present application.

[0029] Figure 5 It is a sectional view of the heating sheet of the present application.

[0030] Figure 6 It is a rotating sectional view of the air inlet motor of the present application.

[0031] Figure 7 It is a schematic diagram of the temperature insulation sleeve structure with a guide structure of the present application.

[0032] Figure 8 It is a schematic diagram of the heat-resistant support structure of the present application. DETAILED DESCRIPTION

[0033] The present invention will now be described in detail with reference to the accompanying drawings.

[0034] like Figures 1-5 As shown, a low-radiation hair dryer includes a housing 1 and a handle 2, which are internally connected. The front end of the housing 1 has an air outlet 101 and a front heat dissipation hole 102, and the rear end has a rear heat dissipation hole 103. A low-radiation heating element 3 is provided inside. The handle 2 has an air inlet 201 and an air intake motor 4. The handle 2 also has a control element 5 that is electrically connected to the low-radiation heating element 3 and the air intake motor 4. A heat insulation sleeve 6 is provided between the heating element and the housing 1. One end of the heat insulation sleeve 6 is located between the front edge of the housing 1 and the outer edge of the air outlet 101, and the other end of the heat insulation sleeve 6 has a baffle 7. The low-radiation heating element 3 has a heat conduction device 8 that guides the air to the front heat dissipation hole 102 and the rear heat dissipation hole 103 respectively. The heat insulation sleeve 6 also has a guide structure 9 located between the inner channels of the housing 1 and the handle 2, which guides the air to the baffle 7.

[0035] In this embodiment, the hair dryer is also equipped with a protective device, which includes a front cover 1001 and a rear cover 1002. The front cover 1001 is disposed on the front heat dissipation hole 102 at the front end of the hair dryer body, and the rear cover 1002 is disposed on the rear heat dissipation hole 103 at the rear end of the hair dryer body. The front cover 1001 and the rear cover 1002 are made of plastic with an outwardly convex mesh structure. With the protection of the front cover 1001 and the rear cover 1002, the problem of users or children sticking their fingers into the heat dissipation hole and being burned is avoided. The structure of the front cover 1001 and the rear cover 1002 includes, but is not limited to, outwardly convex mesh, inwardly concave mesh, and planar mesh structures, and the material includes, but is not limited to, plastic, metal, and ceramic.

[0036] In this embodiment, the heat conduction device 8 includes a front heat conduction element 801 and a rear heat conduction element 802. The air outlet 101 at the front end of the housing 1 is an annular air outlet hole. The front end of the housing 1 also has a front heat dissipation hole 102 located in the air outlet 101. The rear end of the housing 1 has a rear heat dissipation hole 103. One end of the front heat conduction element 801 is disposed in the front heat dissipation hole 102, and the other end is in contact with and fixed to the low radiation heating component 3. One end of the rear heat conduction element 802 is disposed in the rear heat dissipation hole 103, and the other end is in contact with and fixed to the low radiation heating component 3. The front heat conduction element 801 and the rear heat conduction element 802 are made of metal. The materials of the front heat conduction element 801 and the rear heat conduction element 802 include, but are not limited to, plastic, metal and ceramic.

[0037] In the embodiment, the low-radiation heating assembly 3 comprises heating bodies 301, temperature-resistant supports 302, and conductive wires 303, the heating bodies 301 are symmetrically arranged on the temperature-resistant supports 302, the heating body 301 comprises an insulating layer 301a and a heating conductor 301b, the insulating layer 301a is wrapped on the surface of the heating conductor, and a wiring position 301c is left, the conductive wire 303 is connected with the heating body 301 through the wiring position 301c, and is connected on the control assembly 5. The conductive wire 303 connects all the heating bodies 301 in a series and / or parallel manner.

[0038] In the embodiment, the heating body 301 comprises the insulating layer 301a and the heating conductor 301b, by arranging the heating conductor 301b in the insulating layer 301a, the contact of the heating conductor with air can be avoided, so that the oxidation fracture and the carbide dust falling of the heating conductor 301b can be avoided, and by the insulation effect of the insulating layer 301a, the electromagnetic field generated after the heating conductor is electrified is isolated from the outside, so that the electromagnetic radiation generated after the heating conductor is electrified is blocked, and the radiation generated by the hair dryer using the heating assembly is greatly reduced. The material of the insulating layer 301a comprises but is not limited to insulating ceramic, high-molecular high-temperature medium, and high-temperature insulating wood, and the material of the heating conductor 301b comprises but is not limited to resistance sheet or metal heating conductor such as iron-nickel, iron-chromium, and iron-tungsten alloy.

[0039] In the embodiment, the temperature-resistant support 302 comprises an upper end arrangement 302a, a lower end arrangement 302b, and a connecting support rib 302c, a plurality of groups of connecting support ribs 302c are arranged between the upper end arrangement 302a and the lower end arrangement 302b, the upper end of the connecting support rib 302c is fixedly connected with the outer surface of the upper end arrangement 302a, the lower end of the connecting support rib 302c is fixedly connected with the outer surface of the lower end arrangement 302b, and the upper end arrangement 302a and the lower end arrangement 302b are each provided with a fixing structure of the heating body 301.

[0040] The upper end arrangement 302a, the lower end arrangement 302b, and the connecting support rib 302c form the hollow main body of the heat-resistant support, and are integrally formed in the embodiment. The hollow design is more extensive in heat dissipation, is more conducive to the heat dissipation of the support itself, has higher heat dissipation performance, and has a small overall volume. In the heating process, the heat storage is small, that is, the heat capacity is small, which is conducive to rapid cooling, so that the support has self-heat dissipation space under the condition of ensuring the fixing function, accelerates the temperature dissipation of the support itself, and further accelerates the heat conduction and heat dissipation function. In the embodiment, the fixing structure adopts the clamping mode of the clamping block, and the fixing structure comprises but is not limited to the clamping mode of the clamping block, the recess and convex block cooperation clamping mode, the direct sticking mode of heat-resistant glue, the bolt fixing mode, and the like.

[0041] In the embodiment, a heat insulation layer 601 is left between the heat insulation sleeve 6 and the shell 1. In the embodiment, the heat insulation layer 601 is an air layer, but the heat insulation layer 601 can also be a filling layer of other materials with heat insulation effect.

[0042] In the embodiment, the guide structure 9 is a guide hole formed on the heat insulation sleeve, and an inner wall of the guide hole is provided with an inclined surface or inclined curved surface inclined to the baffle 7. The guide structure 9 includes, but is not limited to, the guide hole formed on the heat insulation sleeve, a separate guide piece, and a guide channel directly formed at the connection between the shell and the handle.

[0043] In the embodiment, the rotating shaft of the air inlet motor 4 is provided with a plurality of winding frames 401, the coil 402 of the air inlet motor 4 is wound on a group of winding frames 401 in a mode of winding from the upper end to the lower end, and then wound on all the winding frames 401, or wound on a group of winding frames 401 in a mode of winding from the inside to the outside, and then wound on all the winding frames 401, or wound on a first group of winding frames 401 in a mode of winding from the upper end to the lower end, and then wound on the winding frames 401 symmetrically arranged on the first group of winding frames 401 in a mode of winding from the lower end to the upper end, and then wound on all the winding frames 401. In the embodiment, the structure of the air inlet motor is the same as that of other air inlet motors, and only the winding mode is changed.

[0044] In this embodiment, the electric hair dryer draws in air from outside through the air inlet 201 at the handle 2 under the action of the air inlet motor 4, and the air enters the shell 1 through the handle 2. The heating assembly inside the shell 1 realizes heating of the air. Until the shell 1 is filled with hot air, and new air continues to enter, under the guidance of the guide structure 9, the originally heated air is blown onto the baffle 7 due to air pressure. The baffle 7 blocks the air, so that the direction of the air changes and blows forward again. The air passes through the heating assembly again to realize secondary heating. The originally new air is heated by the heating assembly or the original hot air in the shell 1 when it is pushed by the original air. After being heated again by the new air, the air is blown out of the baffle 7. That is, by adding the baffle 7 and the guide structure 9, the internal air duct structure of the electric hair dryer is changed, so that the air duct of the electric hair dryer changes from the air inlet 201 to the shell 1 through the guide structure 9 and is guided to the baffle 7. Under the action of the baffle 7, the air is reversely pressed and passes through the heating assembly again, and finally is blown out of the air outlet 101. Thus, in the heating process, the heating assembly of the electric hair dryer heats the original air in the shell 1. After the heating is completed, the air is blown out of the air outlet 101 after being heated twice in the air duct formed between the guide structure 9 and the baffle 7 under the action of the new air. In the case of the same power of the heating assembly, the contact time is longer, and the heating temperature of the air is higher. That is, in the case of the same temperature of the blown air, the power consumed is lower, and the electric hair dryer is more energy-saving. Meanwhile, the low-radiation heating assembly 3 is adopted. Compared with the traditional heating assembly, the temperature-resistant support 302 not only sets the heating sheet but also is conveniently arranged behind the electric hair dryer. The temperature-resistant support 302 is connected to the heat conduction device 8. The heat of the heating sheet is guided to the heat conduction device 8 and is discharged from the front heat dissipation hole 102 and the rear heat dissipation hole 103, respectively. This prevents the insulating layer on the heating body 301 from being broken due to overheat for a long time. The heating body 301 includes an insulating layer and a heating conductor. By arranging the heating conductor in the insulating layer, the heating conductor can be prevented from contacting air, thereby avoiding oxidation and carbonization of the heating conductor and preventing the heating conductor from falling off. Meanwhile, the insulating layer can insulate the electromagnetic field generated by each heating conductor after being electrified from the outside, thereby cutting off the electromagnetic radiation generated by the heating conductor after being electrified. The radiation of the electric hair dryer using the heating assembly is greatly reduced. On this basis, the air inlet motor 4 changes the winding method and the current direction to reduce electromagnetic interference. The radiation of the air outlet 101 of the hair dryer motor is zero before heating, thereby further reducing the radiation of the electric hair dryer.

[0045] The heat insulation layer 601 is left to reduce the heat propagation efficiency, improve the heat insulation effect of the heat insulation sleeve 6, and prevent the electric hair dryer from being heated to the shell 1 in the case of not being used, thereby preventing the user from being scalded.

[0046] The hollow design of the temperature-resistant support 302, combined with the heat conduction device 8, accelerates internal heat dissipation, effectively conducts heat to the hair dryer, avoids overheating, reduces the service life of the hair dryer and the heating assembly, and improves the use effect and service life of the hair dryer.

[0047] It is particularly pointed out that the position of the baffle 7 and the position of the guide structure 5 arranged in the shell 100, the most side position of the baffle 7 and the side edge of the guide structure 5 are greater than zero.

[0048] The above is a detailed description of the present application combined with specific embodiments, which cannot be considered as limiting the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, a number of equivalent alternatives or obvious modifications can be made, and the performance or use is the same, which should be considered as belonging to the patent protection range determined by the submitted claims.

Claims

1. A low radiation electric hair dryer comprising a control assembly, characterized in that: The electric hair dryer comprises a shell and a handle, and the inside of the shell and the handle is communicated; The front end of the shell is provided with an air outlet and a front heat dissipation hole, the rear end of the shell is provided with a rear heat dissipation hole, and the inside of the shell is provided with a low-radiation heating assembly; The handle is provided with an air inlet, and an air inlet motor is arranged on the handle; The handle is further provided with a control assembly connected with the low-radiation heating assembly and the air inlet motor; A temperature insulation sleeve is arranged between the heating assembly and the shell, one end of the temperature insulation sleeve is located between the front end edge of the shell and the outer edge of the air outlet, and the other end of the temperature insulation sleeve is provided with a baffle; The low-radiation heating assembly is provided with a heat conduction device, and the heat conduction device is directed to the front heat dissipation hole and the rear heat dissipation hole, respectively; The temperature insulation sleeve is further provided with a guide structure located between the inside of the shell and the handle and guiding the air to the baffle.

2. A low-emissivity hair dryer according to claim 1, wherein: The electric hair dryer is further provided with a protection device, and the protection device comprises a front cover and a rear cover; The front cover is arranged on the front heat dissipation hole of the front end of the main body of the electric hair dryer; The rear cover is arranged on the rear heat dissipation hole of the rear end of the main body of the electric hair dryer.

3. A low-emissivity hair dryer according to claim 1, wherein: The heat conduction device comprises a front heat conduction part and a rear heat conduction part; The air outlet provided on the front end of the shell is an annular air outlet hole, the front end of the shell is further provided with a front heat dissipation hole located in the air outlet, and the rear end of the shell is provided with a rear heat dissipation hole One end of the front heat conduction part is arranged on the front heat dissipation hole, and the other end of the front heat conduction part is in contact with and fixed to the low-radiation heating assembly; One end of the rear heat conduction part is arranged on the rear heat dissipation hole, and the other end of the rear heat conduction part is in contact with and fixed to the low-radiation heating assembly.

4. A low-emissivity hair dryer according to claim 1, wherein: The low-radiation heating assembly comprises a heating body, a temperature-resistant support and a conductive wire; The heating body is symmetrically arranged on the temperature-resistant support; The heating body comprises an insulating layer and a heating conductor; The insulating layer is wrapped on the surface of the heating conductor, and a wiring position is left; The conductive wire is connected with the heating body through the wiring position and is connected to the control assembly; The conductive wire connects all the heating bodies in series and / or parallel.

5. A low emissivity hair dryer according to claim 4, wherein: The temperature-resistant support comprises an upper end setting part, a lower end setting part and a connecting support rib; A plurality of groups of connecting support ribs are arranged between the upper end setting part and the lower end setting part; The upper end of the connecting support rib is fixedly connected to the outer surface of the upper end setting part; The lower end of the connecting support rib is fixedly connected to the outer surface of the lower end setting part; The upper end setting part and the lower end setting part are both provided with a fixing structure of the heating body.

6. A low-emissivity hair dryer according to claim 1, wherein: A heat insulation layer is left between the temperature insulation sleeve and the shell.

7. A low-emissivity hair dryer according to claim 1, wherein: The guide structure is a guide hole provided on the heat insulation sleeve or a protruding guide table arranged on the heat insulation sleeve, and the inner wall of the guide hole or the protruding guide table is inclined to the baffle.

8. A low-emissivity hair dryer according to claim 1, wherein: A plurality of winding frames are arranged on the rotating shaft of the air inlet motor, the coil of the air inlet motor is wound on a group of winding frames in the mode of winding the upper end positively and winding the lower end reversely, and then all the winding frames are wound, or the coil is wound on a group of winding frames in the mode of winding the inner and outer positively and reversely, and then all the winding frames are wound, or the coil is wound on the first group of winding frames in the mode of positive winding, and then all the winding frames are wound in the mode of reverse winding on the winding frames arranged symmetrically on the first group of winding frames.

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