CN117731103A - Hot air blower - Google Patents

Abstract

The invention belongs to the field of handheld drying equipment, and particularly relates to a hot air blower, wherein a shell comprises a body and a handle, the body is provided with a head end and a tail end, the head end is an air outlet end and is provided with an air outlet, the tail end is an air inlet end and is provided with an air inlet, an inner cavity of the body is provided with an air supply unit, an air guide unit and a heating unit, the air supply unit is arranged close to the tail end and is arranged close to the head end, the heating unit is positioned in the inner cavity of the air guide unit and is an infrared baking lamp, the heating unit heats air fluid by emitting infrared light wave radiation through air fluid in the inner cavity of the air guide unit, and at least part of the inner wall of the air guide unit is provided with an infrared light wave reflecting layer. The invention combines the infrared radiation heat source and the wind power conduction, effectively reduces the power of the blower without influencing the use feeling, and the infrared light wave reflecting layer on the wind guiding unit can improve the heating efficiency of infrared radiation, thereby further effectively reducing the energy consumption.

Description

Hot air blower

Technical Field

The invention belongs to the field of handheld drying equipment, and particularly relates to a hot air blower.

Background

Blowers are well known appliances. The hair dryer is mainly used for drying and shaping hair, but can also be used for local drying, heating and physiotherapy in the aspects of laboratories, physiotherapy rooms, industrial production, artists and the like. Blowers generally consist of a heating body and a high-speed fan arranged in a blower housing. The blower generally drives the rotor to drive the fan to rotate by the motor, when the blades of the fan rotate, air is sucked from the air inlet, and centrifugal air flow formed by the air is blown out from the air outlet of the blower. The heating body adopted by the common hair dryer in the market at present is an electric heating wire, and the electric heating wire is heated in a heat conduction mode, so that the heat efficiency is low and the energy consumption is high.

Disclosure of Invention

The invention aims to overcome the defects and the shortcomings of the prior art and provides a hot air blower.

The technical scheme adopted by the invention is as follows: the utility model provides a hot air blower, the shell includes body and handle, the body has head end and tail end, the head end is the air-out end, is equipped with the air outlet on it, the tail end is the air inlet end, is equipped with the air intake on it, and the body inner chamber is equipped with air supply unit, wind-guiding unit, heating element, air supply unit is close to the tail end setting, the wind-guiding unit is close to the head end setting, heating element is located the wind-guiding unit inner chamber, heating element is infrared roast lamp, heating element heats air fluid through the air fluid emission infrared light wave radiation of wind-guiding unit inner chamber, at least part is equipped with infrared light wave reflection stratum on the wind-guiding unit inner wall.

The air guide unit comprises an air duct barrel and a plurality of air guide blades fixed on the inner wall of the air duct barrel, the air supply unit sucks air fluid from an air inlet at the tail end to flow to the inner cavity of the air duct barrel, and the air guide blades are arranged at intervals to form a plurality of air guide channels.

And an infrared light wave reflecting layer is arranged on the inner wall of the air duct cylinder.

The surface of the wind guide blade is coated with an infrared absorption coating or is made of a material with infrared absorption capacity.

The wind guide blade is arranged in a 'Laifu line' structure.

The inner cavity of the body is also fixedly provided with a first fixing frame, a second fixing frame and a third fixing frame, the first fixing frame and the second fixing frame are respectively arranged at two ends of the air supply unit to fix the air supply unit, and the second fixing frame and the third fixing frame are respectively arranged at two ends of the air guide unit to fix the air guide unit and simultaneously fix the heating unit.

And a filter cover is fixed on one side of the body, close to the tail end, of the air supply unit.

The air heater shell comprises a main body part and a second shell part, wherein the first fixing frame is fixedly connected with the main body part, the filter cover is sleeved outside the first fixing frame, the second shell part is sleeved outside the filter cover and is fixedly connected with the main body part, and an air inlet is formed in the second shell part.

The second fixing frame is provided with a first cylindrical main body, a first connecting strip corresponding to the air guide blade is formed in one end of the first cylindrical main body, the inner ends of the first connecting strips are connected into a whole, a first limit lug is arranged on the first connecting strip, a first annular limit slot matched with the air duct barrel and a first bar-shaped limit slot matched with the air guide blade are formed in the first limit lug, and a first limit groove matched with the shape of the end part of the heating unit is formed between the inner ends of the first limit lug;

the third fixing frame is provided with a second cylindrical main body, a second connecting strip corresponding to the air guide blade is formed in one end of the second cylindrical main body, the inner ends of the second connecting strips are connected into a whole through a limiting seat, an annular limiting slot matched with the air duct barrel is formed between the second cylindrical main body and the second connecting strip, a second strip-shaped limiting slot matched with the air guide blade is formed in the second connecting strip, at least two clamping pieces are formed on the limiting seat, a second limiting groove matched with the shape of the end part of the heating unit is formed between the clamping pieces, and a gap between the second connecting strips of the third fixing frame forms an air inlet of the air inlet end. One end of the handle is connected to the side wall of the body and is provided with a wiring end far away from the body, a control unit is fixed in the inner cavity of the handle, the control unit is a control circuit board, a wire protecting sleeve is fixed at the wiring end of the handle, a through hole for a wire harness to pass through is formed in the center of the wire protecting sleeve, a connecting disc is formed at the end part of the wire protecting sleeve, a limiting convex ring is protruded on the periphery of the end part of the connecting disc, the limiting convex ring and the connecting disc are concentrically arranged, a locking assembly is arranged between the wire protecting sleeve and the handle, and the wire protecting sleeve is fixed in the handle through the locking assembly;

the locking assembly is formed by connecting two locking pieces, the locking pieces are of triangular structures, the corresponding sides of the two locking pieces are connected to form the locking assembly which is matched with the shape of the inner cavity of the handle, connecting pieces with third connecting holes are arranged at two ends of the locking pieces, after the corresponding sides of the two locking pieces are connected, the connecting pieces are overlapped in pairs, the inner cavity of the handle is provided with a second protruding connecting block, and a fourth connecting hole is correspondingly formed in the second connecting block, so that the two locking pieces are fixed to the handle through bolt pieces. The connecting edges of the locking pieces are provided with semicircular grooves, limiting semi-rings are formed in the semicircular limiting grooves in a protruding mode, after the corresponding edges of the two locking pieces are connected, the semicircular grooves are combined to form a circular groove for the connecting disc to extend into, and the limiting semi-rings are combined to form a limiting ring for the limiting convex ring.

The beneficial effects of the invention are as follows: the invention combines the infrared radiation heat source and the wind power conduction, effectively reduces the power of the blower without influencing the use feeling, and the infrared light wave reflecting layer on the wind guiding unit can improve the heating efficiency of infrared radiation, thereby further effectively reducing the energy consumption.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that it is within the scope of the invention to one skilled in the art to obtain other drawings from these drawings without inventive faculty.

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of one embodiment of the present invention;

FIG. 3 is an exploded view of a housing according to one embodiment of the present invention;

FIG. 4 is a schematic view of a main body member according to an embodiment of the present invention;

FIG. 5 is a schematic view of the structure of a second housing member according to an embodiment of the present invention;

FIG. 6 is a perspective view of one configuration of an air guiding unit according to an embodiment of the present invention;

FIGS. 7 (a) - (c) are schematic cross-sectional views showing the cooperation of three embodiments of the air guiding unit and the heating unit according to an embodiment of the present invention;

FIGS. 8 (a) and (b) are perspective views of a first mount according to two views of an embodiment of the present invention;

FIG. 9 is a perspective view of a second mount according to an embodiment of the present invention;

FIG. 10 is a perspective view of a third mount according to an embodiment of the present invention;

FIG. 11 is a perspective view of a grommet according to an embodiment of the present invention;

FIG. 12 is an exploded view of the locking assembly in one embodiment of the present invention;

FIG. 13 is an enlarged schematic view of portion A of FIG. 2;

in the drawing the view of the figure,

the device comprises a body-10, a head-11, a tail-12, a middle part-13, a first part-14 and a second part-15;

the handle-20, the wiring terminal-21, the control piece-22, the second connecting block-23 and the fourth connecting hole-24;

the connecting device comprises a main body piece-31, a middle connecting ring-311, a first connecting frame-312, a limiting step part-3121, a second connecting frame-313, a first connecting block-3131 and a second connecting hole-3132;

a first housing part-32;

a second housing member-33, a partition-331, a filter housing-332;

an air supply unit-40;

the air guide device comprises an air guide unit-50, an air duct barrel-51, a reflecting inclined plane-511, an air guide blade-52 and an air guide channel-53;

a heating unit-60;

the device comprises a first fixing frame-71, a fixing frame-711, a first limiting groove-712, a first connecting hole-713, a second limiting groove-714, a supporting side plate-715, an air inlet notch-7151, a first reinforcing connecting rib-716 and a second reinforcing connecting rib-717;

the device comprises a second fixing frame-72, a first cylindrical main body-721, a first connecting strip-722, a first limit bump-723, a first annular limit slot-724, a first strip-shaped limit slot-725 and a first limit groove-726;

the device comprises a third fixing frame-73, a second cylindrical main body-731, a second connecting strip-732, a limiting seat-733, an annular limiting slot-734, a second bar-shaped limiting slot-735, a clamping piece-736, a second limiting groove-737 and a magnetic block-738;

a control unit-80;

the wire protecting sleeve-90, the connecting disc-91, the limiting convex ring-92, the locking piece-93, the third connecting hole-931, the connecting piece-932, the semicircular groove-933, the limiting semi-ring-934 and the positioning clamping groove-935.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.

It should be noted that, in the embodiments of the present invention, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present invention, and the following embodiments are not described one by one.

The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the invention and are not intended to limit the scope of the invention.

As shown in fig. 1, the air heater comprises a body 10 and a handle 20, wherein the body 10 is provided with a head end 11 and a tail end 12, one end of the handle 20 is connected to the side wall of the body 10 and is provided with a terminal 21 far away from the body 10, and the handle 20 is provided with an operating piece 22.

The outer wall of the body 10 is divided into a middle portion 13 connected to the handle 20, a first portion 14 extending from the middle portion 13 to the head end 11, and a second portion 15 extending from the middle portion 13 to the tail end 12.

As shown in fig. 2, the inner cavity of the body 10 is provided with an air supply unit 40, an air guiding unit 50 and a heating unit 60, the head end 11 is an air outlet end, an air outlet is arranged on the head end 11, the tail end 12 is an air inlet end, an air inlet is arranged on the tail end 12, the air supply unit 40 is arranged close to the tail end 12, the air guiding unit 50 is arranged close to the head end 11, and the heating unit 60 is positioned in the inner cavity of the air guiding unit 50.

The blower unit 40 includes a fan and a motor, and the blower unit 40 draws air fluid from the air intake of the tail end 12 to the blower unit 50.

The air guiding unit 50 comprises an air duct barrel 51 and a plurality of air guiding blades 52 fixed on the inner wall of the air duct barrel 51, the air supplying unit 40 sucks air fluid from the air inlet of the tail end 12 to flow to the inner cavity of the air duct barrel 51, and the plurality of air guiding blades 52 are arranged at intervals to form a plurality of air guiding channels 53.

The heating unit 60 is an infrared baking lamp, the heating unit 60 is located in the inner cavity of the air duct barrel 51 and is arranged at a certain distance from the plurality of air guide blades 52, and the heating unit 60 heats the air fluid by emitting infrared light wave radiation to the air fluid in the inner cavity of the air duct barrel 51. The heat transfer form of infrared rays is radiation heat transfer, and energy is transferred by electromagnetic waves. When the infrared rays are irradiated to the object to be heated, a part of the rays are reflected back and a part of the rays are transmitted. When the emitted infrared wavelength corresponds to the absorption wavelength of the heated object, the heated object absorbs infrared rays, and at the moment, molecules and atoms in the object generate resonance, strong vibration and rotation are generated, and the temperature of the object is increased by the vibration and rotation, so that the purpose of heating is achieved.

The inner cavity of the body 10 is also fixedly provided with a first fixing frame 71, a second fixing frame 72 and a third fixing frame 73, the first fixing frame 71 and the second fixing frame 72 are respectively arranged at two ends of the air supply unit 40 to fix the air supply unit 40, and the second fixing frame 72 and the third fixing frame 73 are respectively arranged at two ends of the air guide unit 50 to fix the air guide unit 50 and simultaneously fix the heating unit 60.

The inner cavity of the handle 20 is fixed with a control unit 80, the control unit 80 is specifically a control circuit board provided with adjusting functions for controlling the on-off of a power supply, the temperature, the wind speed and the like, and the control piece 22 is connected with the control circuit board to realize the adjusting functions of controlling the on-off of the power supply, the degree, the wind speed and the like. The wire end 21 of the handle 20 is fixed with a wire protecting sleeve 90, and a through hole for the wire harness to pass through is arranged in the center of the wire protecting sleeve 90 and used for passing through the wire harness. The control member 22 may be a conventional blower control switch structure such as a key switch or a touch switch.

As shown in fig. 3, the air blower housing includes a main body member 31, a first housing member 32, and a second housing member 33, as shown in fig. 4, the main body member 31 is integrally formed by connecting a middle connecting ring 311, a first connecting frame 312, a second connecting frame 313, and a handle 20, the outer wall of the middle connecting ring 311 directly forms the middle portion 13 of the outer wall of the body 10, the first housing member 32 and the second housing member 33 are respectively sleeved and connected outside the first connecting frame 312 and the second connecting frame 313, and the outer walls of the first housing member 32 and the second housing member 33 respectively form the first portion 14 and the second portion 15 of the outer wall of the body 10, which can be used as a housing decoration.

As shown in fig. 5, a partition 331 is formed at the tail of the second housing member 33, the partition 331 is hollow, an air inlet at the tail end 12 is formed, and the partition 331 forms a first filtering structure for air inlet. Meanwhile, as shown in fig. 2 and 3, a filter cover 332 is fixed in the second housing member 33, and the filter cover 332 is fixedly connected with the first fixing frame 71 to form a second filtering structure for air intake. The second housing member 33 is removable, so that the filter housing 332 is removable for cleaning, and in particular, a snap-fit connection is provided between the inner wall of the second housing member 33 and the second connection frame 313.

As shown in fig. 6, in the present embodiment, the wind guiding blades 52 of the wind guiding unit 50 are arranged in a form of a "lehr line". The Laifu line is a spiral concave-convex line in the gun barrel and the gun barrel, a hollow sinking place is called a female line or a female chamber, and a convex part is called a male line or a male chamber, and the Laifu line is used for guiding wind, so that the internal loss of wind and the wind loss of the inner wall during internal extrusion can be reduced, and the purpose of improving the wind speed is achieved.

Further, an infrared light wave reflecting layer is at least partially disposed on the inner wall of the air guiding unit 50 in this embodiment. The infrared light wave reflecting layer has different material properties and different reflecting capacities, and common external reflection materials comprise metal-based infrared reflection materials with high conductivity, such as gold, silver, aluminum and the like, for example, oxide-type infrared reflection materials with infrared reflection effects, such as titanium dioxide, silicon dioxide, bismuth oxychloride, tin-doped indium oxide, antimony-doped tin oxide and the like, and novel materials with infrared reflection effects disclosed at present. Specifically, the infrared light wave reflecting layer may be additionally loaded on the inner wall of the air guiding unit 50 by adopting a film plating method, a coating method and the like, or may be integrally formed with a part or all parts of the air guiding unit 50 by adopting a material with an infrared reflecting function. The infrared light wave reflecting layer is provided on the duct body 51, so that the heating efficiency of the heating unit 60 can be effectively improved.

Specifically, the air guiding unit 50 of the present invention may have various embodiments, as shown in fig. 7 (a) - (c), and three embodiments of the present invention are shown.

As a first embodiment of the present invention, as shown in fig. 7 (a), the inner wall of the duct cylinder 51 is a smooth inner wall, on which an infrared light wave reflection layer is provided, and the infrared light wave sufficiently heats the air in the space between the heating unit 60 and the duct cylinder 51, thereby efficiently utilizing the radiant energy of the infrared light wave;

wherein the cross-section of the wind guiding vanes 52 is rectangular or T-shaped as shown in the figures. In order to further improve the heating efficiency, the air guiding blade 52 may be provided with an infrared radiation heat absorbing material, the air guiding blade 52 may absorb the infrared light wave radiation incident thereon, and then the air contacting with the air guiding blade 52 may be further heated by heat conduction, for example, the surface of the air guiding blade 52 is coated with an infrared absorbing coating or made of a material having infrared absorbing capability integrally. To further reduce heat loss, the air duct barrel 51 is at least partially made of a heat-insulating material, so as to avoid heat loss of the air guide vanes 52 from the air duct barrel 51, for example, the air duct barrel 51 is directly integrally formed by the heat-insulating material or a heat-insulating sleeve is partially formed in the air duct barrel 51. The absorption peak of the infrared absorbing material used is preferably matched to the infrared wave band emitted from the heating unit 60 so that it can efficiently absorb the infrared wave for heating.

As shown in fig. 7 (b), the inner wall of the air duct body 51 has a plurality of reflection inclined surfaces 511, and the infrared light wave reflection layer on the reflection inclined surfaces 511 intensively reflects the infrared light wave into the air guide channel 53 between the air guide blades 52, thereby improving the heating efficiency. In the figure, the reflecting inclined plane 511 of the inner wall of the air duct barrel 51 is a regular inclined plane, and can reflect infrared light waves according to a preset path through the arrangement of the inclination of the reflecting inclined plane to provide infrared radiation heating efficiency, or a rough diffuse reflection layer can be directly arranged on the inner wall of the air duct barrel 51, and then an infrared light wave reflection layer is added;

wherein the cross section of the wind guiding vane 52 is rectangular or T-shaped as shown in the figure;

in order to further improve the heating efficiency, the air guiding blade 52 may be made of an infrared radiation heat absorbing material, the air guiding blade 52 may absorb the infrared radiation emitted thereon, and then conduct heat to the air contacting with the air guiding blade 52, so as to conduct further heat to the air, for example, the air guiding blade 52 is made of a heat transfer material, and the surface is coated with an infrared absorption coating. To further reduce heat loss, the air duct cylinder 51 may be made of a heat-insulating material, so as to avoid heat loss of the air guide blade 52 through the air duct cylinder 51;

or, in order to further improve the heating efficiency, an infrared light wave reflecting layer may be disposed on the surface of the air guiding blade 52, that is, the infrared light wave reflected at the reflecting inclined plane 511 of the inner wall of the air duct barrel 51 is at least partially reflected to the surface of the air guiding blade 52, and then reflected, so that the heating efficiency of the infrared light wave radiation is effectively utilized.

As a third embodiment of the present invention, as shown in fig. 7 (c), the inner wall of the air duct cylinder 51 is a smooth inner wall or may be provided with a plurality of reflection inclined planes 511 as shown in fig. 7 (b), on which an infrared light wave reflection layer is provided, and the infrared light wave sufficiently heats the air in the space between the heating unit 60 and the air duct cylinder 51, thereby efficiently utilizing the radiation energy of the infrared light wave;

wherein, the sections of the two sides of the wind guiding blade 52 are inclined or arc-shaped relative to the radial direction, so that at least part of the infrared light wave emitted by the heating unit 60 directly irradiates the side of the wind guiding blade 52, and the sections of the two sides of the wind guiding blade 52 are inclined relative to the radial direction;

in order to further improve the heating efficiency, the air guiding blade 52 may be made of an infrared radiation heat absorbing material, the air guiding blade 52 may absorb the infrared radiation emitted thereon, and then conduct heat to the air contacting with the air guiding blade 52, so as to conduct further heat to the air, for example, the air guiding blade 52 is made of a heat transfer material, and the surface is coated with an infrared absorption coating. To further reduce heat loss, the air duct cylinder 51 may be made of a heat-insulating material, so as to avoid heat loss of the air guide blade 52 through the air duct cylinder 51;

alternatively, in order to further improve the heating efficiency, an infrared light wave reflection layer may be provided on the surface of the wind guiding blade 52, that is, the infrared light wave that is emitted to the surface of the wind guiding blade 52, and after reflection, the air in the air duct cylinder 51 is fully contacted and heated, so that the heating efficiency of the infrared light wave radiation is efficiently utilized.

The air duct cylinder 51 and the air guide blade 52 may be integrally formed, or may be separately formed and then connected, assembled and fixed.

The first fixing frame 71 has a structure as shown in fig. 8 (a) - (b), and has a fixing frame 711 with an outer peripheral shape adapted to the shape of the second connecting frame 313, wherein the fixing frame 711 is provided with a first connecting hole 713, as shown in fig. 4, the inner periphery of the second connecting frame 313 is provided with a first connecting block 3131 protruding corresponding to the first connecting hole 713, and the first connecting block 3131 is provided with a second connecting hole 3132 corresponding to the second connecting block 313, so that the fixing frame 711 is fixed to the second connecting frame 313 by a bolt member. As shown in fig. 8 (a), a first limiting groove 712 adapted to the shape of the blower unit 40 is formed on the inner periphery of one side of the fixed frame 711, and as shown in fig. 8 (b), a second limiting groove 714 is formed on the other side of the fixed frame 711, and the end of the filter cover 332 is clamped in the second limiting groove 714. Further, a supporting side plate 715 is connected to the other side of the fixing frame 711, and the supporting side plate 715 is located on the inner wall of the filter cover 332 to support and prevent shrinkage of the filter cover 332. Specifically, two support side plates 715 are provided, the outer ends of the two support side plates 715 are connected by two first reinforcing connection ribs 716, the outer ends of the two support side plates 715 are connected by two second reinforcing connection ribs 717, and at the end of the filter housing 332, the outer end of the support side plate 715 and the second reinforcing connection ribs 717 form a supporting frame structure. Two partition plates with a certain interval can be inserted between the two support side plates 715, three air inlet spaces are formed by the separation of the inner space of the filter cover 332, and air inlet gaps 7151 are formed in the region between the two corresponding partition plates on one or two support side plates 715.

The structure of the second fixing frame 72 is shown in fig. 9, and the second fixing frame has a first tubular main body 721, a first connection strip 722 corresponding to the air guiding blade 52 is formed in one end of the first tubular main body 721, the inner ends of the first connection strips 722 are connected into a whole, a first limit bump 723 is disposed on the first connection strip 722, a first annular limit slot 724 adapted to the air duct barrel 51 and a first bar-shaped limit slot 725 adapted to the air guiding blade 52 are formed on the first limit bump 723, and a first limit groove 726 adapted to the shape of the end of the heating unit 60 is formed between the inner ends of the first limit bump 723.

The structure of the third fixing frame 73 is shown in fig. 10, and the third fixing frame 73 has a second cylindrical main body 731, a second connecting bar 732 corresponding to the wind guiding blade 52 is formed in one end of the second cylindrical main body 731, the inner ends of the second connecting bars 732 are connected into a whole through a limiting seat 733, an annular limiting slot 734 adapted to the air duct barrel 51 is formed between the second cylindrical main body 731 and the second connecting bar 732, a second bar-shaped limiting slot 735 adapted to the wind guiding blade 52 is formed on the second connecting bar 732, at least two clamping pieces 736 are formed on the limiting seat 733, and a second limiting groove 737 adapted to the shape of the end of the heating unit 60 is formed between the clamping pieces 736. As shown in fig. 1, the gaps between the second connection strips 732 of the third fixing frame 73 form an air inlet at the air inlet end, and meanwhile, a magnetic block 738 is embedded in the front end of the limiting seat 733 for magnetically connecting with additional air guiding fittings.

As shown in fig. 4, a limiting step portion 3121 is formed inside the end portion of the first connection frame 312, and an end of the third fixing frame 73 near the head end 11 is abutted and limited to an inner end of the limiting step portion 3121. When the body 10 is assembled, the third fixing frame 73, the heating unit 60, the air guiding unit 50, the second fixing frame 72, the air supplying unit 40, and the first fixing frame 71 are sequentially installed from the opening of the second connection frame 313, then the fixing frame 711 is fixed into the second connection frame 313 by the bolt members, and then the filter housing 332, the first housing member 32, and the second housing member 33 are installed. As shown in fig. 2, the third fixing frame 73 is fixed in the body 10 at a certain distance from the end of the body 10, so as to avoid overheating of the third fixing frame 73 and scalding of the user.

As shown in fig. 11, a connecting disc 91 is formed at the end of the wire protecting sleeve 90, a limiting convex ring 92 is protruded on the periphery of the end of the connecting disc 91, the limiting convex ring 92 and the connecting disc 91 are concentrically arranged, a locking assembly as shown in fig. 12 is arranged between the wire protecting sleeve 90 and the handle 20, and the wire protecting sleeve 90 is fixed in the handle 20 through the locking assembly. Specifically, as shown in fig. 12, the locking assembly is formed by connecting two locking members 93, the locking members 93 have a triangular structure, the corresponding sides of the two locking members 93 are connected to form a locking assembly adapted to the shape of the inner cavity of the handle 20, connecting pieces 932 having third connecting holes 931 are provided at two ends of the locking members 93, after the corresponding sides of the two locking members 93 are connected, the connecting pieces 932 are overlapped in pairs, and as shown in fig. 4, the inner cavity of the handle 20 is provided with a raised second connecting block 23, and a fourth connecting hole 24 is correspondingly provided on the second connecting block 23, so that the two locking members 93 are fixed to the handle 20 through bolt members. Wherein, retaining member 93 connects the edge and is equipped with semicircle groove 933, protruding in the semicircle spacing groove 933 is formed with spacing semi-ring 934, and two retaining member 93 correspond the limit and meet the back, semicircle groove 933 cooperatees and forms the circular slot that supplies the connection disc 91 to stretch into, and spacing semi-ring 934 cooperatees and forms spacing ring to spacing bulge loop 92, sets up like this, but the wire protection cover 90 free rotation wherein, and the use impression is better.

Further, as shown in fig. 12, a positioning slot 935 is provided on one of the locking members 93 for the control circuit board to be snapped into.

In this embodiment, the infrared baking lamp body adopts an inert gas infrared lamp, the wave band of the lamp is 390 wave bands, the theoretical value is that the power consumption generation heat value of 300 watts is 230 ℃, and the infrared light wave is further reflected by the infrared light wave reflecting layer on the air guiding unit, so that the temperature of the air outlet effectively reaches the experience requirement of 50-80 degrees by combining high-speed air heat dissipation.

The foregoing disclosure is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.

Claims (10)

1. The utility model provides a hot air blower, shell includes body (10) and handle (20), body (10) have head end (11) and tail end (12), head end (11) are the air-out end, are equipped with the air outlet on it, tail end (12) are the air inlet end, are equipped with the air intake on it, and body (10) inner chamber is equipped with air supply unit (40), air guide unit (50), heating unit (60), air supply unit (40) are close to tail end (12) setting, air guide unit (50) are close to head end (11) setting, its characterized in that: the heating unit (60) is located in the inner cavity of the air guide unit (50), the heating unit (60) is an infrared baking lamp, the heating unit (60) emits infrared light wave radiation to heat air fluid through the air fluid in the inner cavity of the air guide unit (50), and at least part of the inner wall of the air guide unit (50) is provided with an infrared light wave reflecting layer.

2. The air heater according to claim 1, wherein: the air guide unit (50) comprises an air duct barrel (51) and a plurality of air guide blades (52) fixed on the inner wall of the air duct barrel (51), the air supply unit (40) sucks air fluid from an air inlet of the tail end (12) to flow into the inner cavity of the air duct barrel (51), and the air guide blades (52) are arranged at intervals to form a plurality of air guide channels (53).

3. A hot-air blower according to claim 2, characterized in that: an infrared light wave reflecting layer is arranged on the inner wall of the air duct barrel (51).

4. A hot-air blower according to claim 2, characterized in that: the surface of the air guide blade (52) is coated with an infrared absorption coating or made of a material with infrared absorption capability.

5. The hot-air blower according to claim 2 or 4, characterized in that: the wind guide blades (52) are arranged in a 'Laifu line' structure.

6. A hot-air blower according to any one of claims 1-4, characterized in that: the inner cavity of the body (10) is fixedly provided with a first fixing frame (71), a second fixing frame (72) and a third fixing frame (73), the first fixing frame (71) and the second fixing frame (72) are respectively arranged at two ends of the air supply unit (40) to fix the air supply unit (40), the second fixing frame (72) and the third fixing frame (73) are respectively arranged at two ends of the air guide unit (50) to fix the air guide unit (50), and meanwhile, the heating unit (60) is fixed.

7. The air heater according to claim 6, wherein: a filter cover (332) is fixed in the body (10) at one side of the air supply unit (40) close to the tail end (12).

8. The air heater according to claim 7, wherein: the air heater shell comprises a main body part (31) and a second shell part (33), wherein the first fixing frame (71) is fixedly connected with the main body part (31), the filter cover (332) is sleeved outside the first fixing frame (71), the second shell part (33) is sleeved outside the filter cover (332) and is fixedly connected with the main body part (31), and an air inlet is formed in the second shell part (33).

9. The air heater according to claim 6, wherein: the second fixing frame (72) is provided with a first cylindrical main body (721), a first connecting strip (722) corresponding to the air guide blade (52) is formed in one end of the first cylindrical main body (721), the inner ends of the first connecting strips (722) are connected into a whole, a first limit lug (723) is arranged on the first connecting strip (722), a first annular limit slot (724) matched with the air duct cylinder (51) and a first strip-shaped limit slot (725) matched with the air guide blade (52) are formed on the first limit lug (723), and a first limit groove (726) matched with the end shape of the heating unit (60) is formed between the inner ends of the first limit lug (723);

the third fixing frame (73) is provided with a second cylindrical main body (731), a second connecting strip (732) corresponding to the air guide blades (52) is formed in one end of the second cylindrical main body (731), the inner ends of the second connecting strips (732) are connected into a whole through a limiting seat (733), an annular limiting slot (734) matched with the air duct cylinder body (51) is formed between the second cylindrical main body (731) and the second connecting strip (732), a second strip-shaped limiting slot (735) matched with the air guide blades (52) is formed in the second connecting strip (732), at least two clamping pieces (736) are formed in the limiting seat (733), a second limiting groove (737) matched with the end shape of the heating unit (60) is formed between the clamping pieces (736), and a gap between the second connecting strips (732) of the third fixing frame (73) forms an air inlet of the air inlet end.

10. The air heater according to claim 1, wherein: one end of the handle (20) is connected to the side wall of the body (10) and is provided with a wiring end (21) far away from the body (10), a control unit (80) is fixed in an inner cavity of the handle (20), the control unit (80) is a control circuit board, the wiring end (21) of the handle (20) is fixedly provided with a wire protecting sleeve (90), a through hole for a wire harness to pass through is formed in the center of the wire protecting sleeve (90), a connecting disc (91) is formed at the end part of the wire protecting sleeve (90), a limiting convex ring (92) protrudes out of the periphery of the end part of the connecting disc (91), the limiting convex ring (92) and the connecting disc (91) are concentrically arranged, and a locking assembly is arranged between the wire protecting sleeve (90) and the handle (20) to enable the wire protecting sleeve (90) to be fixed in the handle (20) through the locking assembly;

the locking assembly is formed by connecting two locking pieces (93), the locking pieces (93) are of triangular structures, the corresponding sides of the two locking pieces (93) are connected to form the locking assembly which is matched with the shape of the inner cavity of the handle (20), connecting pieces (932) with third connecting holes (931) are arranged at two ends of the locking pieces (93), after the corresponding sides of the two locking pieces (93) are connected, the connecting pieces (932) are overlapped in pairs, a second protruding connecting block (23) is arranged in the inner cavity of the handle (20), and a fourth connecting hole (24) is correspondingly formed in the second connecting block (23), so that the two locking pieces (93) are fixed on the handle (20) through bolt pieces;

the connecting edges of the locking pieces (93) are provided with semicircular grooves (933), limiting semi-rings (934) are formed in the semicircular limiting grooves (933) in a protruding mode, after the corresponding edges of the two locking pieces (93) are connected, the semicircular grooves (933) are combined to form round grooves for the connecting discs (91) to extend in, and the limiting semi-rings (934) are combined to form a limiting ring for the limiting convex rings (92).