hair dryer

Abstract

The present invention provides a hair dryer comprising: a housing, an air inlet duct formed therein, an air inlet and an air outlet connected to the air inlet duct at each end of the housing; a wind speed cover connected to the end of the housing provided with the air outlet, an air outlet duct formed therein, an air inlet and an air outlet connected to the air outlet duct, the air inlet being connected to the air outlet, and an annular air outlet; wherein the air inlet and the air outlet are arranged at an angle. The technical solution of the present invention can increase the air outlet speed of the hair dryer without increasing the energy consumption of the hair dryer.

Description

Technical Field

[0001] The present invention relates to the technical field of hair dryers, in particular to a hair dryer. Background Art

[0002] At present, all hair dryers on the market draw in external airflow through the fan in the hair dryer, accelerate the airflow and blow it out at high speed; in order to increase the airflow rate, the relevant technology generally achieves it by increasing the motor speed of the fan; however, increasing the motor speed will cause the hair dryer to consume more energy. Summary of the Invention

[0003] The main purpose of the present invention is to provide a hair dryer, aiming to increase the air outlet speed of the hair dryer without increasing the energy consumption of the hair dryer.

[0004] To achieve the above object, the present invention provides a hair dryer comprising:

[0005] A housing having an air inlet duct formed therein, and an air inlet and an air outlet connected to the air inlet duct respectively provided at both ends of the housing;

[0006] A wind speed cover, the wind speed cover is connected to one end of the housing provided with the air outlet, an air outlet duct is formed in the wind speed cover, the wind speed cover is further provided with an air flow inlet and an air flow outlet connected to the air outlet duct, the air flow inlet is connected to the air outlet, and the air flow outlet is an annular air outlet;

[0007] Wherein, the air inlet duct and the air outlet duct are arranged at an angle.

[0008] Optionally, the wind speed hood and the housing are an integrated structure;

[0009] Alternatively, the wind speed hood and the shell are split structures.

[0010] Optionally, the shell includes a grip section, a transition section and an air inlet section, the transition section is arranged between the grip section and the air inlet section, and connects the air inlet section and the grip section, the grip section, the transition section and the air inlet section are connected to form the air inlet duct, the air outlet is opened at one end of the grip section away from the transition section, and the air inlet section is opened with the air inlet.

[0011] Optionally, the wind speed hood includes an inner annular wall, an outer annular wall and a bottom wall, the outer annular wall and the inner annular wall are protruding from the same side surface of the bottom wall, the inner annular wall is located on the inner side of the outer annular wall, and the inner annular wall is spaced apart from the outer annular wall;

[0012] The outer annular wall, the inner annular wall and the bottom wall together form the air outlet duct, the outer annular wall is provided with the air flow inlet connecting the air outlet duct and the air outlet, and the end of the outer annular wall facing away from the bottom wall and the end of the inner annular wall facing away from the bottom wall together form the air flow outlet.

[0013] Optionally, the inner annular wall gradually moves away from the outer annular wall from the bottom wall along the air outlet direction of the air flow outlet.

[0014] Optionally, the bottom wall is inclined from an end of the outer annular wall away from the airflow outlet toward the airflow outlet.

[0015] Optionally, the hair dryer further comprises a speed-regulating hood, which is inserted into the airflow outlet and extends to the bottom wall, the speed-regulating hood is arranged around the inner side wall of the outer ring wall and is spaced apart from the outer ring wall, and the speed-regulating hood is provided with a guide port connected to the airflow inlet;

[0016] And / or, the inner side wall of the outer ring wall is provided with a heat insulation layer.

[0017] Optionally, the housing includes a housing body and a bottom cover, the housing body is a cylindrical structure with openings at both ends, one end of the housing body is open to form the air outlet, and the bottom cover is provided to cover the other end of the housing body;

[0018] There are a plurality of air inlets, and the air inlets are distributed on the bottom cover and a side wall of the shell body close to the bottom cover.

[0019] Optionally, the bottom cover includes a bottom plate and a rotating portion arranged around the circumference of the bottom plate, the rotating portion is rotatably connected to the bottom plate, the bottom plate is fixed to the shell body, and the rotating portion overlaps an end surface of the shell body on a side facing the shell body;

[0020] The hair dryer further includes a switch assembly, which includes a power control board, an electronic switch, and a switch cap. The power control board is disposed inside the housing and fixed to the bottom plate. A slide groove is provided on the power control board, and the electronic switch is slidably inserted into the slide groove. The switch cap is fixedly connected to an end of the electronic switch that is away from the power control board.

[0021] An insertion portion is convexly provided on a side surface of the bottom plate facing the shell body, the insertion portion is inserted into the shell body, a guide groove is formed on the insertion portion, and a limit groove is provided on the switch cap. The inner edge of the guide groove is clamped in the limit groove, so that the switch cap is slidably connected to the bottom plate;

[0022] One end of the switch cap facing away from the power control board is fixed to the rotating part, and the switch cap slides in the guide groove as the rotating part rotates, thereby driving the electronic switch to slide in the slide groove to control the electrical on and off of the hair dryer.

[0023] Optionally, the hair dryer further comprises:

[0024] an insulating tube, wherein both ends of the insulating tube are open, an outer side wall of the insulating tube is spaced apart from an inner side wall of the shell, one end of the insulating tube is open toward the air inlet, and the other end of the insulating tube is open toward the air outlet, and a heating space is formed in the insulating tube;

[0025] A heating element is arranged in the heating space.

[0026] The technical solution of the present invention is that the hair dryer is provided with a wind speed cover connected to the air outlet, and an air outlet duct is formed in the wind speed cover. The fan in the hair dryer introduces external airflow into the housing, and then blows the airflow out of the housing's air outlet, causing it to flow into the air outlet duct. Furthermore, the airflow outlet of the wind speed cover connected to the air outlet duct is an annular air outlet, which can reduce the area of ​​the hair dryer's airflow outlet, thereby increasing the wind pressure at the airflow outlet, and further increasing the airflow velocity through the airflow outlet. In other words, the technical solution of the present invention can increase the airflow velocity blown out by the hair dryer through the wind speed cover, without increasing the motor speed of the fan, thereby avoiding increased energy consumption of the hair dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 An exploded view of an embodiment of a hair dryer of the present invention;

[0029] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 3 for Figure 1 Cross-sectional view of the hair dryer;

[0031] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0032] Figure 5 for Figure 3 Schematic diagram of the structure of the blower, wire rack and thermal insulation cylinder;

[0033] Figure 6 Schematic diagram of the wind path of the hair dryer of the present invention.

[0034] Description of Figure Numbers:

[0035] Label name Label name 100 hair dryer 31 diversion port 10 case 32 Stopper 11 Shell body 40 switch assembly 12 bottom cover 41 Power control board 121 Rotating part 411 chute 122 baseplate 42 switch cap 1221 guide groove 421 Snap-on protrusion 1222 Insertion 43 electronic switches 13 air outlet 50 Insulation tube 14 air inlet 60 Fan structure 20 Wind speed hood 61 fan 21 bottom wall 611 fan blades 211 Socket 612 motor 22 Outer ring wall 62 Fan fixing bracket 23 Inner ring wall 70 Wire rack structure 24 Airflow inlet 71 Wire rack 25 Airflow outlet 72 Wire rack fixing bracket 30 Speed ​​regulating hood 80 power cord

[0036] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] The present invention provides a hair dryer 100 .

[0042] Please refer to Figure 1 In some embodiments of the present invention, the hair dryer 100 includes a shell 10 and a wind speed cover 20, an air inlet duct is formed in the shell 10, and an air inlet 14 and an air outlet 13 connected to the air inlet duct are respectively provided at both ends of the shell 10; the wind speed cover 20 is connected to the end of the shell 10 provided with the air outlet 13, an air outlet duct is formed in the wind speed cover 20, and the wind speed cover 20 is further provided with an air flow inlet 24 and an air flow outlet 25 connected to the air flow duct, the air flow inlet 24 is connected to the air outlet 13, and the air flow outlet 25 is an annular air outlet; wherein, the air inlet duct and the air outlet duct are arranged at an angle.

[0043] Specifically, in this embodiment, the shell 10 is a hollow structure, and an air inlet duct is formed inside the shell 10. The shell 10 has a length direction, and an air inlet 14 and an air outlet 13 are respectively provided at both ends along the length direction, and the air inlet 14 and the air outlet 13 are both connected to the air inlet duct; specifically, a fan 61 is provided in the shell 10, and the fan 61 is arranged between the air inlet 14 and the air outlet 13 along the length direction of the shell 10, and the fan 61 includes a motor 612 and a plurality of blades 611, and the output shaft of the motor 612 extends along the length direction of the shell 10, and the plurality of blades 611 are arranged at circumferential intervals around the output shaft and are fixedly connected to the output shaft; when the motor 612 of the fan 61 rotates, the output shaft drives the plurality of blades 611 to rotate to form wind pressure in the shell 10, thereby driving the airflow from the air inlet 14 into the air inlet duct, and blowing the airflow out from the air outlet 13.

[0044] Furthermore, the hair dryer 100 also includes a wind speed hood 20, which covers the air outlet 13. An air outlet duct is formed inside the wind speed hood 20, and the air inlet duct and the air outlet duct are arranged at an angle. The wind speed hood 20 is also provided with an air flow inlet 24 and an air flow outlet 25 connected to the air outlet duct. The air flow inlet 24 is connected to the air outlet 13 of the shell 10 so that the air flow blown out of the air outlet 13 enters the air outlet duct along the air flow inlet 24; further, the air flow outlet 25 is an annular air outlet, so that the air outlet area of ​​the air flow outlet 25 is smaller than the air inlet area of ​​the air flow inlet 24, thereby increasing the air flow velocity passing through the air flow outlet 25.

[0045] According to the technical solution of the present invention, the hair dryer 100 is provided with a wind speed cover 20 connected to the air outlet 13, and an air outlet duct is formed in the wind speed cover 20. The fan 61 in the hair dryer 100 introduces external airflow into the housing 10, and then blows the airflow out of the air outlet 13 of the housing 10, causing it to flow into the air outlet duct. Furthermore, the air outlet 25 in the wind speed cover 20 connected to the air outlet duct is an annular air outlet, which can reduce the area of ​​the air outlet 25 of the hair dryer 100, thereby increasing the wind pressure at the air outlet 25 and further increasing the air flow velocity through the air outlet 25. In other words, the technical solution of the present invention can increase the air flow velocity blown out by the hair dryer 100 through the wind speed cover 20, without increasing the speed of the motor 612 of the fan 61, thereby avoiding increased energy consumption of the hair dryer 100.

[0046] In some embodiments of the present invention, the wind speed hood and the housing are integrally formed; alternatively, the wind speed hood and the housing are split. Specifically, the wind speed hood 20 and the housing 10 are integrally formed, facilitating integrated injection molding, reducing processing steps, and lowering costs. Of course, the wind speed hood 20 and the housing 10 can also be split, allowing for adjustment of the airflow velocity of the hair dryer 100 by replacing wind speed hoods 20 of different sizes, resulting in greater convenience.

[0047] It should be noted that when the wind speed hood 20 and the shell 10 are of a split structure, the connection method between the wind speed hood 20 and the shell 10 includes but is not limited to a snap connection, a screw connection or a magnetic connection, etc., which is not specifically limited here.

[0048] Please refer to Figure 2The shell 10 includes a grip section 15, a transition section 16 and an air inlet section 17. The transition section is arranged between the grip section 15 and the air inlet section 17, and connects the air inlet section 17 and the grip section 15. The grip section 15, the transition section 16 and the air inlet section 17 are connected to form the air inlet duct. The air outlet 13 is provided at the end of the grip section 15 away from the transition section 16, and the air inlet section 17 is provided with the air inlet 14. In the technical solution of the present invention, the shell 10 has a length direction, and an air inlet 14 and an air outlet 13 are respectively provided at both ends along the length direction; in this embodiment, the shell 10 includes a gripping section 15, a transition section 16 and an air inlet section 17 which are sequentially connected along the length direction of the shell 10, and the gripping section 15, the transition section 16 and the air inlet section 17 are connected to form an air inlet duct, and the air outlet 13 is provided at one end of the gripping section 15 away from the transition section 16, and the air inlet 14 is provided at the air inlet section 17; in the technical solution of this embodiment, the shell 10 is arranged in a straight cylindrical shape, and a gripping section 15 is formed on the shell 10. The user can pick up the hair dryer 100 by directly holding the gripping section 15 without the need for an additional handle, thereby reducing the volume of the hair dryer 100 and making the hair dryer 100 more portable and convenient to store.

[0049] Furthermore, the cross-sectional area of ​​the grip section 15 is smaller than the cross-sectional area of ​​the air inlet section 17, so that when the user holds the grip section 15 to pick up the hair dryer 100, the hair dryer 100 is not easy to slip; and the air duct area of ​​the grip section 15 is smaller than the air duct area of ​​the transition section 16 and the air inlet section 17, so that the air duct pressure in the grip section 15 increases, thereby increasing the flow rate of the airflow when flowing through the grip section 15.

[0050] Please refer to Figure 3In some embodiments of the present invention, the wind speed hood 20 includes an inner annular wall 23, an outer annular wall 22 and a bottom wall 21. The outer annular wall 22 and the inner annular wall 23 are protruded from the same side surface of the bottom wall 21, and the inner annular wall 23 is located on the inner side of the outer annular wall 22, and the inner annular wall 23 is spaced apart from the outer annular wall 22; the outer annular wall 22, the inner annular wall 23 and the bottom wall 21 together form the air outlet duct, the outer annular wall 22 is provided with the air flow inlet 24 connecting the air outlet duct and the air outlet 13, and the end of the outer annular wall 22 facing away from the bottom wall 21 and the end of the inner annular wall 23 facing away from the bottom wall 21 together form the air flow outlet 25. Specifically, in this embodiment, the wind speed cover 20 includes an inner ring wall 23 and an outer ring wall 22, the side wall of the outer ring wall 22 is connected to the end of the shell 10 provided with the air outlet 13, the inner ring wall 23 and the outer ring wall 22 are both annular, the outer ring wall 22 is sleeved on the outside of the inner ring wall 23, and the outer ring wall 22 is spaced apart from the inner ring wall 23, the wind speed cover 20 also includes a bottom wall 21 for connecting the inner ring wall 23 and the outer ring wall 22, the bottom The wall 21 is provided between the inner annular wall 23 and the outer annular wall 22, and the bottom wall 21 is connected to one end of the inner annular wall 23 and the outer annular wall 22 on the same side, respectively. The bottom wall 21, the inner annular wall 23 and the outer annular wall 22 enclose the air outlet duct, and the end of the inner annular wall 23 facing away from the bottom wall 21 and the end of the outer annular wall 22 facing away from the bottom wall 21 enclose an air outlet 25, thereby making the air outlet 25 an annular air outlet; further refer to Figure 2 In this embodiment, the air outlet duct is an annular air duct, and the air flow enters the air outlet duct from the air outlet 13 of the shell 10. The air flow flows along the air outlet duct to form a vortex, which increases the wind pressure in the air outlet duct and accelerates the extraction of the air flow in the shell 10 to increase the air flow velocity, and then blows the air out from the air outlet 25.

[0051] Furthermore, the side wall of the outer ring wall 22 connected to the housing 10 is provided with an air inlet 24 connected to the air outlet duct, the air inlet 24 is arranged toward the air outlet 13 of the housing 10, and the air flow direction of the air outlet 25 and the air inlet 24 is arranged at an angle. Figure 3 In this embodiment, the airflow blown out of the air outlet 13 enters the annular air duct along the airflow inlet 24, is accelerated in the wind speed hood 20 and then blown out from the airflow outlet 25. The airflow direction of the airflow inlet 24 is arranged perpendicular to the airflow direction of the airflow outlet 25, so that the vortex formed in the air outlet duct is blown out from the airflow outlet 25 in the same direction and will not overflow to the surroundings.

[0052] Please refer to Figure 3In some embodiments of the present invention, the inner annular wall 23 gradually moves away from the outer annular wall 22 along the outlet direction of the air outlet 25 from the bottom wall 21. Specifically, in the technical solution of the present invention, the airflow enters the air outlet duct and flows along the air outlet duct to form a vortex, so as to increase the wind pressure in the air outlet duct, accelerate the extraction of the airflow in the shell 10, and increase the airflow velocity; in this embodiment, one end of the inner annular wall 23 is connected to the end on the same side of the outer annular wall 22 through the bottom wall 21, and the inner annular wall 23 gradually moves away from the outer annular wall 22 along the outlet direction of the air outlet 25 from the bottom wall 21, so that the inner annular wall 23 is tilted. Due to the air inlet 24 is set at an angle to the air flow direction of the air outlet 25, which avoids the air flow blown out from the air outlet 13 from directly impacting the inner ring wall 23, and causes part of the air flow to return in the direction away from the air outlet 13, resulting in an increase in the wind resistance of the air flow blown out of the air outlet 13; in the technical solution of this embodiment, the inner ring wall 23 is set at an angle, so that part of the air flow blown out of the air outlet flows along the inclined surface of the inner ring wall 23 to the air outlet 25, reducing the wind resistance of the air flow blown out of the air outlet 13 and increasing the air flow rate.

[0053] In some embodiments of the present invention, the bottom wall 21 is inclined from the end of the outer annular wall 22 facing away from the airflow outlet 25 toward the airflow outlet 25. In the technical solution of the present invention, the airflow is blown out from the air outlet 13 and flows toward the air outlet duct, forming a vortex along the annular air duct in the air outlet duct. In this embodiment, the bottom wall 21 is inclined to avoid the existence of a flow dead angle in the air outlet duct, which increases the airflow resistance in the air outlet duct. The bottom wall 21 is inclined from the outer annular wall 22 toward the inner side of the outer annular wall 22, so that the airflow in the air outlet duct can flow along the inclined surface of the bottom wall 21, reducing the airflow resistance in the air outlet duct and increasing the airflow velocity.

[0054] Please refer to Figure 4In some embodiments of the present invention, the hair dryer 100 further includes a speed-regulating hood 30, which is inserted into the air flow outlet 25 and extends to the bottom wall 21. The speed-regulating hood 30 is arranged along the inner side wall of the outer ring wall 22 and is spaced apart from the outer ring wall 22. The speed-regulating hood 30 is provided with a guide port 31 connected to the air flow inlet 24; and / or the inner side wall of the outer ring wall 22 is provided with a heat insulation layer. Specifically, in this embodiment, the airflow flows out along the airflow outlet 25 of the wind speed hood 20, and the wind speed hood 20 is further connected to a speed regulating air hood 30 at the position of the airflow outlet 25, and the speed regulating air hood 30 is inserted in the airflow outlet 25 and arranged around the airflow outlet 25, and one end of the speed regulating air hood 30 is inserted in the airflow outlet 25 and extends to the bottom wall 21, and the inner wall of the speed regulating air hood 30 and the inner ring wall 23 are enclosed to form a ring-shaped speed regulating air duct, and the speed regulating air hood 30 is provided with a guide port 31 connected to the airflow outlet 25, and the airflow enters the speed regulating air duct from the airflow outlet 25 along the guide port 31 and is blown out, so that the airflow blown out by the hair dryer 100 maintains the same flow direction; further, the speed regulating air hood 30 is spaced apart from the outer ring wall 22 to prevent the heat carried by the airflow from being transferred to the outer ring wall 22, thereby preventing scalding of the user.

[0055] Furthermore, in some embodiments of the present invention, a plug-in slot 211 is provided on the side of the bottom wall 21 facing the speed regulating air duct, and the speed regulating air hood 30 is inserted into the plug-in slot 211 at one end of the wind speed hood 20 so that the speed regulating air hood 30 is spaced apart from the outer ring wall 22.

[0056] In some embodiments, the inner sidewall of the outer ring wall 22 is provided with a heat-insulating layer (not shown) to prevent heat carried by the airflow from being transferred to the outer ring wall 22, thereby preventing burns to the user. The heat-insulating layer may be made of, but not limited to, porous materials, heat-reflective materials, and vacuum materials, and may be made of, but not limited to, asbestos or mica sheets, and is not specifically limited herein. It should be noted that in the technical solution of this embodiment, the hair dryer 100 includes at least one of the speed-regulating hood 30 and the heat-insulating layer, thereby providing heat insulation and preventing burns to the user.

[0057] Furthermore, the speed regulating wind hood 30 also has a stop portion 32, which is protruding from the outer wall of the speed regulating wind hood 30 at one end exposed from the wind speed hood 20, and the stop portion 32 is arranged around the outer wall of the speed regulating wind hood 30, and the stop portion 32 abuts against the end face of the outer ring wall 22 where the air flow outlet 25 is provided to increase the sealing between the speed regulating wind hood 30 and the air flow outlet 25.

[0058] Please refer to Figure 1In some embodiments of the present invention, the shell 10 includes a shell body 11 and a bottom cover 12. The shell body 11 is a cylindrical structure with openings at both ends. One end of the shell body 11 is opened to form the air outlet 13, and the bottom cover 12 is covered with the other end opening of the shell body 11; there are a plurality of air inlets 14, and the plurality of air inlets 14 are distributed on the bottom cover 12 and the side wall of the shell body 11 at one end close to the bottom cover 12. In the technical solution of the present invention, the two ends of the shell 10 are respectively provided with an air inlet 14 and an air outlet 13 connected to the air duct of the shell 10; in this embodiment, the shell 10 includes a shell body 11 and a bottom cover 12 connected to each other, and the shell body 11 is a cylindrical structure with two ends through, one end of the shell body 11 is open to form the air outlet 13, and the bottom cover 12 is covered with the other end opening of the shell body 11; further, the hair dryer 100 is provided with a plurality of air inlets 14, and the plurality of air inlets 14 are arranged on the bottom cover 12 and the side wall of one end of the shell body 11 close to the bottom cover 12, so as to increase the air inlet area of ​​the shell 10 and improve the air flow efficiency.

[0059] The shell 10 also has components such as a fan 61 fixed inside to drive the airflow into the shell 10 and blow it out from the air outlet 13 of the shell 10. At the same time, wires such as a power cord 80 need to be introduced to provide power to the fan 61. The shell body 11 and the bottom cover 12 are detachably connected, and the bottom cover 12 is provided with a through hole for passing the power cord 80, which facilitates the installation and fixation of the fan 61 and the routing of the wires.

[0060] Please refer to Figure 5In some embodiments of the present invention, the bottom cover 12 includes a bottom plate 122 and a rotating portion 121 arranged along the circumference of the bottom plate 122, the rotating portion 121 is rotatably connected to the bottom plate 122, the bottom plate 122 is fixed to the shell body 11, and the rotating portion 121 overlaps one end surface of the shell body 11 facing the side of the shell body 11; the hair dryer 100 also includes a switch assembly 40, the switch assembly 40 includes a power control board 41, an electronic switch 43 and a switch cap 42, the power control board 41 is arranged inside the shell 10 and fixed to the bottom plate 122, the power control board 41 is provided with a slide groove 411, the electronic switch 43 can be slidably inserted in the slide groove 411, the switch cap 42 is connected to the The electronic switch 41 is fixedly connected at one end away from the power control board 41; an insertion portion 1222 is convexly provided on a side surface of the bottom plate 122 facing the shell body 11, and the insertion portion 1222 is inserted into the shell body 11. The insertion portion 1222 is provided with a guide groove 1221, and the switch cap 42 is provided with a limiting groove. The inner edge of the guide groove 1221 is clamped in the limiting groove so that the switch cap 42 is slidably connected to the bottom plate 122; the switch cap 42 is fixed to the rotating part 121 at one end away from the power control board 41, and the switch cap 42 slides in the guide groove 1221 as the rotating part 121 rotates, driving the electronic switch 43 to slide in the slide groove 411 to control the electrical on and off of the hair dryer 100. In this embodiment, the bottom plate 122 of the bottom cover 12 is provided with an insertion portion 1222 on one side of the plate facing the shell body 11, and the insertion portion 1222 is arranged around the circumference of the bottom plate 122. The insertion portion 1222 is inserted into the shell body 11 to fix the bottom plate 122 to the shell body 11; further, the hair dryer 100 is provided with a switch assembly 40, the switch 40 includes a power control board 41 and an electronic switch 43 slidably connected to the power control board 41, the electronic switch 43 slides in the slide groove 411 of the power control board 41 to control the power on and off; the power control board 41 is fixed on the bottom plate 122; the bottom cover 12 also includes A rotating portion 121 is arranged around the circumference of the base plate 122, and the rotating portion 121 is rotatably connected to the base plate 122 and rotates along the circumference of the base plate 122. The switch assembly 40 also includes a switch cap 42, which is connected to the end of the electronic switch 43 away from the power control board 41, and is used to drive the electronic switch 43 to slide in the slide groove 411. The switch cap 42 is fixed to the rotating portion 121. When the rotating portion 121 rotates relative to the base plate 122, it drives the switch cap 42 to move to drive the electronic switch 43 to slide in the slide groove 411 of the power control board 41, thereby controlling the electrical on and off of the hair dryer 100.In the technical solution of this embodiment, the switch assembly 40 is accommodated inside the shell 10 to prevent the switch 40 from being exposed, prevent the hair dryer 100 from being turned on due to incorrect operation, and avoid safety hazards; and the switch is accommodated in the shell 10 to improve the ornamental effect.

[0061] In some embodiments, the inserting portion 1222 of the bottom plate 122 is provided with a guide groove 1221, and the switch cap 42 is passed through the guide groove 1221. When the rotating portion 121 rotates relative to the bottom plate 122, the switch cap 42 slides along the guide groove 1221, driving the electronic switch 43 to slide in the slide groove 411 to control the electrical on and off of the hair dryer 100. The guide groove 1221 plays a guiding role to prevent the switch cap 42 from being offset. Furthermore, the switch cap 42 is provided with The inner edge of the guide groove 1221 is clamped in the limiting groove to prevent the switch cap 42 from moving radially along the shell body 11; further, the inner wall of the rotating part 121 is provided with a clamping groove (not shown in the figure), and the end of the switch cap 42 facing the rotating part 121 is provided with a clamping protrusion 421. The switch cap 42 is fixedly connected to the rotating part 121 through the clamping fit of the clamping protrusion 421 and the clamping groove, so that the switch cap 42 rotates together with the rotating part 121.

[0062] It should be noted that, in this embodiment, the bottom cover 12 and the shell body 11 may be connected by snap connection, magnetic attraction, or bonding, which is not specifically limited here.

[0063] Please refer to Figure 1In some embodiments of the present invention, the hair dryer 100 further includes an insulating tube 50 and a heating element. The insulating tube 50 is open at both ends, and the outer wall of the insulating tube 50 is spaced apart from the inner wall of the shell 10. One end of the insulating tube 50 is open toward the air inlet 14, and the other end of the insulating tube 50 is open toward the air outlet 13. A heating space is formed in the insulating tube 50; the heating element is arranged in the heating space. The hair dryer 100 in this embodiment, in addition to accelerating the airflow to form high-speed wind, is also provided with a heating element. The heating element is located in the air inlet duct, and heats the airflow flowing through the air inlet duct to form hot air to be blown out, thereby improving the air drying efficiency. Furthermore, in the technical solution of this embodiment, an insulating tube 50 is also provided. The insulating tube 50 is a cylindrical structure with two ends through. One end of the insulating tube 50 opens toward the air outlet 13 of the shell 10, and the other end of the insulating tube 50 opens toward the air inlet 14. The airflow enters the shell 10 through the air inlet 14. Afterwards, it flows through the inside of the insulation tube 50 and flows to the air outlet 13, and is blown out from the air outlet 13; the heating element is arranged on the inside of the insulation tube 50 to heat the airflow to form hot air, and the insulation tube 50 is used to isolate the heat of the hot air, and the insulation tube 50 is spaced apart from the inner wall of the shell 10 to avoid direct contact between the insulation tube 50 and the shell 10 to transfer heat to the shell 10, thereby avoiding heat conduction along the side wall of the shell 10 to the outside, causing heat loss and waste of resources; at the same time, it avoids heat conduction to the shell 10, causing burns to the user.

[0064] Further references Figure 6 In some embodiments, the hair dryer 100 further includes a wire rack 71, the wire rack 71 being fixed inside the heat-insulating cylinder 50, and the heating element being fixed to the wire rack 71. Specifically, the hair dryer 100 includes a wire rack structure 70, the wire rack structure 70 including a wire rack 71 and a wire rack fixing frame 72, the wire rack fixing frame 72 being fixed to an opening at one end of the heat-insulating cylinder 50 and being arranged around the opening of the heat-insulating cylinder 50, a wire rack fixing groove being provided on the inner edge of the wire rack fixing frame 72, the wire rack 71 being inserted into the wire rack fixing groove to be fixed inside the heat-insulating cylinder 50. The heating element is fixed to the wire rack 71. In some embodiments, the heating element is a heating wire, and the heating wire is wound around the wire rack 71.

[0065] In some embodiments, the hair dryer 100 is provided with a fan structure 60, and the fan structure 60 includes a fan fixing frame 62 and a fan 61. The fan 61 is fixed in the insulation tube 50 through the fan fixing frame 62, so that the fan 61 generates wind pressure in the insulation tube 50, so that the air flow flows through the inside of the insulation tube 50, and the heating element heats the air flow.

[0066] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the contents of the present description and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A hair dryer, characterized in that: include: A housing having an air inlet duct formed therein, and an air inlet and an air outlet connected to the air inlet duct respectively provided at both ends of the housing; A wind speed cover, the wind speed cover is connected to one end of the housing provided with the air outlet, an air outlet duct is formed in the wind speed cover, the wind speed cover is further provided with an air flow inlet and an air flow outlet connected to the air outlet duct, the air flow inlet is connected to the air outlet, and the air flow outlet is an annular air outlet; wherein the air inlet duct and the air outlet duct are arranged at an angle; The wind speed hood includes an inner ring wall, an outer ring wall and a bottom wall, the outer ring wall and the inner ring wall are protruding from the same side surface of the bottom wall, the inner ring wall is located on the inner side of the outer ring wall, and the inner ring wall and the outer ring wall are spaced apart, and the inner side wall of the outer ring wall is provided with a heat insulation layer; The outer annular wall, the inner annular wall, and the bottom wall together form the air outlet duct, the outer annular wall is provided with the air flow inlet connecting the air outlet duct and the air outlet, an end of the outer annular wall facing away from the bottom wall and an end of the inner annular wall facing away from the bottom wall together form the air outlet, and the inner annular wall gradually moves away from the outer annular wall from the bottom wall along the air outlet direction of the air outlet; The hair dryer further includes a speed-regulating hood, which is inserted into the airflow outlet and extends to the bottom wall. The speed-regulating hood is arranged around the inner side wall of the outer ring wall and is spaced apart from the outer ring wall. The speed-regulating hood is provided with a guide port connected to the airflow inlet. The bottom wall is provided with a plug-in slot on one side facing the speed regulating air duct, and the speed regulating air cover is inserted into the plug-in slot at one end of the wind speed cover, so that the speed regulating air cover is spaced apart from the outer ring wall; The hair dryer also includes an insulating tube and a heating element. The insulating tube is open at both ends, and the outer wall of the insulating tube is spaced apart from the inner wall of the shell. One end of the insulating tube is open toward the air inlet, and the other end of the insulating tube is open toward the air outlet. A heating space is formed inside the insulating tube; the heating element is arranged in the heating space.

2. The hair dryer according to claim 1, wherein The wind speed cover and the housing are an integrated structure; Alternatively, the wind speed hood and the shell are split structures.

3. The hair dryer according to claim 1, wherein The shell includes a grip section, a transition section and an air inlet section. The transition section is arranged between the grip section and the air inlet section and connects the air inlet section and the grip section. The grip section, the transition section and the air inlet section are connected to form the air inlet duct. The air outlet is provided at one end of the grip section away from the transition section, and the air inlet section is provided with the air inlet.

4. The hair dryer according to claim 1, wherein The bottom wall is inclined from an end of the outer ring wall away from the air flow outlet toward the air flow outlet.

5. The hair dryer according to claim 1, wherein The housing comprises a housing body and a bottom cover, wherein the housing body is a cylindrical structure with two ends open, one end of the housing body is open to form the air outlet, and the bottom cover is provided to cover the other end of the housing body; There are a plurality of air inlets, and the air inlets are distributed on the bottom cover and a side wall of the shell body close to the bottom cover.

6. The hair dryer according to claim 5, characterized in that The bottom cover includes a bottom plate and a rotating portion arranged around the circumference of the bottom plate, the rotating portion is rotatably connected to the bottom plate, the bottom plate is fixed to the shell body, and the rotating portion overlaps one end surface of the shell body facing the side of the shell body; The hair dryer further includes a switch assembly, which includes a power control board, an electronic switch, and a switch cap. The power control board is disposed inside the housing and fixed to the bottom plate. A slide groove is provided on the power control board, and the electronic switch is slidably inserted into the slide groove. The switch cap is fixedly connected to an end of the electronic switch that is away from the power control board. An insertion portion is convexly provided on a side surface of the bottom plate facing the shell body, the insertion portion is inserted into the shell body, a guide groove is formed on the insertion portion, and a limit groove is provided on the switch cap. The inner edge of the guide groove is clamped in the limit groove, so that the switch cap is slidably connected to the bottom plate; One end of the switch cap facing away from the power control board is fixed to the rotating part. The switch cap slides in the guide groove as the rotating part rotates, driving the electronic switch to slide in the slide groove to control the electrical on and off of the hair dryer.

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