CN220001071U - Hair drier - Google Patents

Abstract

The utility model discloses a blower, which comprises a shell, a blower assembly, a first filter screen and a rear cover, wherein the shell is provided with an air inlet and an air outlet; the fan assembly is arranged in the shell and is configured to drive airflow to flow from the air inlet to the air outlet; the first filter screen is covered on the air inlet and is connected with the shell; the rear cover is provided with an installation opening and a plurality of ventilation through holes, the inner side of the rear cover is provided with a second filter screen covering the ventilation through holes, and the meshes of the first filter screen are smaller than those of the second filter screen; one of the air inlet and the mounting opening is provided with a avoidance position and a clamping position, the other is provided with a clamping part, the avoidance position and the clamping position are distributed adjacently in the circumferential direction of the air inlet, and the clamping part can rotate from the avoidance position to the clamping position along the circumferential direction of the air inlet so as to be clamped at the clamping position. The technical scheme of the utility model can facilitate the cleaning of the filter screen after the rear cover is disassembled and assembled.

Description

Hair drier

Technical Field

The utility model relates to the field of hair drying devices, in particular to a hair dryer.

Background

Currently, hair dryers have become a frequently used personal care product in daily life, primarily for drying hair, styling hair, and the like. In the blower, in order to prevent foreign matters from entering the air duct of the blower from the air inlet, a filter screen is usually disposed at the air inlet. Some blowers are provided with a coarse filter screen and a fine filter screen at the position of the air inlet, wherein one fine filter screen is fixed on the blower shell, the coarse filter screen cover is arranged on the outer side of the fine filter screen and is fixed through a detachable rear cover, and therefore after the blower is used for a period of time, the fine filter screen can be cleaned after the rear cover is detached and the filter screen is discharged. But in the related art, the buckle is arranged on the rear cover, the clamping hole is formed in the fan shell, so that after the buckle is directly inserted into the clamping hole in place, the buckle can be clamped in the clamping hole to realize the installation of the rear cover, but when the rear cover needs to be disassembled, the buckle is difficult to separate from the clamping hole due to the fact that the buckle is positioned in the clamping hole, the rear cover is difficult to disassemble, and the practical use experience is poor.

Disclosure of Invention

The utility model mainly aims to provide a blower, which aims to facilitate the disassembly and assembly of a rear cover so as to facilitate the cleaning of a filter screen.

To achieve the above object, the present utility model provides a blower comprising:

the shell is provided with an air inlet and an air outlet;

the fan assembly is arranged in the shell and is configured to drive airflow to flow from the air inlet to the air outlet;

the first filter screen is covered on the air inlet and is connected with the shell; and

the rear cover is provided with an installation opening and a plurality of ventilation through holes, the inner side of the rear cover is provided with a second filter screen covering the ventilation through holes, and the meshes of the first filter screen are smaller than those of the second filter screen;

one of the air inlet and the mounting opening is provided with a avoidance position and a clamping position, the other one of the air inlet and the mounting opening is provided with a clamping part, the avoidance position and the clamping position are distributed adjacently in the circumferential direction of the air inlet, and the clamping part can rotate from the avoidance position to the clamping position along the circumferential direction of the air inlet so as to be clamped at the clamping position.

Optionally, the shell is kept away from the one end of air outlet is formed with the mounting groove, the air intake is located in the mounting groove, the joint position with dodge the position and all locate in the mounting groove, and be located the outside of air intake.

Optionally, the mounting groove has the diapire and encircles and locate the perisporium of diapire, the air intake is located the diapire, be close to on the diapire the part of perisporium is equipped with dodges the hole, so as to form dodge the position, dodge one side in hole and form the joint position, joint portion locates back cover the terminal surface of installation opening part, joint portion's size is less than dodge the hole size.

Optionally, the bottom wall is last and be in one side of dodging the hole is equipped with the draw-in hole, so as to form the joint position, the draw-in hole with dodge the hole intercommunication, and with the perisporium interval, the draw-in hole is close to the lateral wall of perisporium is equipped with the sand grip, the sand grip is followed the circumference of mounting groove extends, the sand grip is equipped with first draw-in groove, the outside second draw-in groove of joint portion, the second draw-in groove is followed the circumference of mounting opening extends, be equipped with the card arch in the second draw-in groove, joint portion is followed dodge the hole card and go into in the draw-in hole, just the sand grip card is gone into the second draw-in groove when the card protruding card is gone into in the first draw-in groove, the back lid joint is fixed the shell.

Optionally, the rear cover is provided with at least two clamping portions, a plurality of clamping portions are circumferentially distributed at intervals in the mounting opening, and the shell is provided with the avoidance position and the clamping position corresponding to each clamping portion.

Optionally, the outer surface of the rear cover is a convex arc surface protruding away from the mounting opening, and the ventilation via penetrates through the outer surface of the rear cover.

Optionally, the second filter screen is detachably connected with the rear cover.

Optionally, the back lid internal surface just is close to the installation opening's position is equipped with spacing convex part, the shape of second filter screen with the shape looks adaptation of back lid inner chamber, so that the surface of second filter screen is pasted back lid internal surface, just the second filter screen butt is in spacing convex part deviates from the one side of installation opening.

Optionally, the first filter screen includes annular perisporium, cover in diapire of annular perisporium one end and connect in the connection turn-ups of annular perisporium other end, the connection turn-ups is fixed the shell, annular perisporium is located at least partially the outside of air intake, annular perisporium with the diapire all is equipped with a plurality of meshes.

Optionally, the shell includes main part and connects in the handle portion of main part one side, main part is equipped with the air intake with the air outlet, the handle portion is equipped with circuit device and the power cord of connection circuit device including one or more control key, fan subassembly with circuit device connects, be equipped with heating element between air outlet and the fan subassembly, heating element with circuit device electricity is connected.

According to the technical scheme, the first filter screen is arranged at the air inlet of the blower shell, the rear cover with the second filter screen is covered outside the first filter screen, the avoidance position and the clamping position are arranged at one of the air inlet and the mounting opening, the clamping part is arranged at the other one, so that the avoidance position and the clamping position are distributed adjacently in the circumferential direction of the air inlet, and the clamping part can rotate from the avoidance position to the clamping position along the circumferential direction of the air inlet so as to be clamped at the clamping position. When the rear cover is installed, the rear cover is covered at the air inlet, the clamping part stretches into the avoidance position, and then the rear cover is rotated anticlockwise or clockwise, so that the clamping part moves to the clamping position from the avoidance position, and when the clamping part and the clamping position are clamped in place, the fixing of the rear cover can be realized. When the rear cover is required to be detached, the rear cover is only required to rotate in the opposite direction, so that the clamping part moves from the clamping position to the avoiding position, and the rear cover can be taken down, so that the rear cover is easy and convenient to detach. Therefore, double filtration can be realized through the first filter screen and the second filter screen, the risk that foreign matters enter the blower is reduced, and after a period of use, the rear cover and the second filter screen can be taken down through the mode of rotating the rear cover, so that the first filter screen and the second filter screen are cleaned, the user is more convenient in actual use, and the user experience is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a blower according to an embodiment of the present utility model;

fig. 2 is a schematic view of the blower of fig. 1 with the rear cover removed;

fig. 3 is a cross-sectional view of the blower of fig. 2;

FIG. 4 is a schematic view of the blower of FIG. 2 with the first screen removed;

FIG. 5 is an enlarged view of FIG. 4 at A;

fig. 6 is a schematic structural view of the rear cover in fig. 1.

Reference numerals illustrate:

10. a housing; 101. an air outlet; 102. an air inlet; 11. a mounting groove; 111. a bottom wall; 112. a peripheral wall; 121. avoidance of yielding; 121. avoidance holes; 131. a clamping position; 131. a clamping hole; 132. a convex strip; 133. a first clamping groove; 14. a main body portion; 15. a handle portion; 21. a fan assembly; 22. a heating component; 31. a first filter screen; 32. a second filter screen; 40. a rear cover; 401. a mounting opening; 41. a ventilation via; 42. a clamping part; 421. a second clamping groove; 422. a clamping protrusion; 43. a limit protrusion; 51. a circuit board; 52. control keys.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a blower.

In the embodiment of the present utility model, as shown in fig. 1 to 6, the blower includes a housing 10, a blower assembly 21, a first filter screen 31 and a rear cover 40, the housing 10 is provided with an air inlet 102 and an air outlet 101, the blower assembly 21 is disposed in the housing 10, and the blower assembly 21 is configured to drive an air flow from the air inlet 102 to the air outlet 101; the first filter screen 31 is covered on the air inlet 102 and is connected with the shell 10; the rear cover 40 is provided with a mounting opening 401 and a plurality of ventilation through holes 41, the inner side of the rear cover 40 is provided with a second filter screen 32 covering the plurality of ventilation through holes 41, and the mesh holes of the first filter screen 31 are smaller than those of the second filter screen 32. The rear cover 40 covers the air inlet 102.

In this embodiment, the blower further includes a circuit device and a heating element 22, the housing 10 includes a main body 14 and a handle 15 connected to one side of the main body 14, the main body 14 has an air inlet 102 and an air outlet 101, and the heating element 22 is disposed in the main body 14 and is located in the air duct between the air outlet 101 and the blower element 21. The circuit device comprises a circuit board 51 and at least one control key 52, the circuit board 51 is provided with a control circuit, the control key 52, the heating component 22 and the fan component 21 are all connected with the control circuit, and the control key 52 and at least part of the circuit board 51 are arranged on the handle portion 15, so that on one hand, the space of the handle portion 15 can be utilized, and on the other hand, a user can conveniently operate the control key 52 when holding the handle portion 15. The control key 52 may be a push button or a push switch key. The handle portion 15 is provided with a power cord for connecting the circuit device. The fan assembly 21 comprises a motor and a fan blade arranged on the motor, and the heating device comprises a supporting frame and a heating wire arranged on the supporting frame. The specific structure of the control circuit can refer to the prior art, and the utility model is not repeated here.

Optionally, the number of the control keys 52 is multiple, and the control keys 52 include an air speed control key, a temperature control key, a start key, a cold air key and a cold air key Tong Suojian, where the air speed control key, the temperature control key and the cold air key are disposed on one side of the handle 15 close to the air outlet 101, so that a user can operate when holding the handle 15, and the start key and the Tong Suojian are disposed on one side of the handle 15 away from the air outlet 101, so as to reduce risk of false touch during use. Of course, in other embodiments, control keys 52 include a wind speed control key, a temperature control key, and an activation key.

The mesh of the second screen 32 is larger than that of the first screen 31, i.e. the second screen 32 is used for primary filtration to avoid entry of large particulate impurities, while the first screen 31 is used for further filtration, e.g. to block hair and larger particulate dust from entering the blower.

One of the air inlet 102 and the mounting opening 401 is provided with a avoidance bit 121 and a clamping bit 131, the other is provided with a clamping part 42, the avoidance bit 121 and the clamping bit 131 are distributed adjacently in the circumferential direction of the air inlet 102, and the clamping part 42 can rotate from the avoidance bit 121 to the clamping bit 131 along the circumferential direction of the air inlet 102 so as to be clamped at the clamping bit 131. Specifically, the air inlet 102 of the housing 10 may be provided with a relief 121 and a clamping position 131, and the mounting opening 401 of the rear cover 40 is provided with a clamping portion 42; or the clamping part 42 is arranged at the air inlet 102 of the shell 10, and the avoidance bit 121 and the clamping bit 131 are arranged at the mounting opening 401 of the rear cover 40.

When the rear cover 40 is installed, the rear cover 40 is covered at the air inlet 102, the clamping part 42 stretches into the avoidance position 121, and then the rear cover 40 is rotated anticlockwise or clockwise, so that the clamping part 42 moves from the avoidance position 121 to the clamping position 131, and when the clamping part 42 is clamped with the clamping position 131 in place, the fixing of the rear cover 40 can be realized. When the rear cover 40 needs to be detached, the rear cover 40 can be removed only by rotating the rear cover 40 in the opposite direction, so that the clamping part 42 moves from the clamping position 131 to the avoiding position 121.

According to the technical scheme, the first filter screen 31 is arranged at the air inlet 102 of the blower housing 10, the rear cover 40 provided with the second filter screen 32 is covered outside the first filter screen 31, the avoidance bit 121 and the clamping bit 131 are arranged at one of the air inlet 102 and the mounting opening 401, the other is provided with the clamping part 42, the avoidance bit 121 and the clamping bit 131 are adjacently distributed in the circumferential direction of the air inlet 102, and the clamping part 42 can rotate from the avoidance bit 121 to the clamping bit 131 along the circumferential direction of the air inlet 102 so as to be clamped at the clamping bit 131. That is, when the rear cover 40 is mounted, the rear cover 40 is covered at the air inlet 102, the clamping part 42 extends into the avoidance position 121, and then the rear cover 40 is rotated anticlockwise or clockwise, so that the clamping part 42 moves from the avoidance position 121 to the clamping position 131, and when the clamping part 42 is clamped with the clamping position 131 in place, the fixing of the rear cover 40 can be realized. When the rear cover 40 needs to be detached, the rear cover 40 can be removed only by rotating the rear cover 40 in the opposite direction, so that the clamping part 42 moves from the clamping position 131 to the avoiding position 121, and the rear cover 40 is easy and convenient to detach. Therefore, double filtration can be realized through the first filter screen 31 and the second filter screen 32, the risk that foreign matters enter the blower is reduced, and after a period of use, the rear cover 40 and the second filter screen 32 can be taken down through the mode of rotating the rear cover 40, so that the first filter screen 31 and the second filter screen 32 are cleaned, and the user is more convenient in actual use, and the user experience is improved.

In some embodiments, a mounting groove 11 is formed at an end of the housing 10 away from the air outlet 101, the air inlet 102 is disposed in the mounting groove 11, and the clamping position 131 and the avoidance position 121 are both disposed in the mounting groove 11 and located outside the air inlet 102. Namely, after the rear cover 40 is mounted, the mounting opening 401 of the rear cover 40 is partially positioned in the mounting groove 11, so that the avoidance bit 121, the clamping bit 131 and the clamping part 42 can be hidden, the contact area between the rear cover 40 and the housing 10 can be increased, the rear cover 40 can be effectively limited through the mounting groove 11, and the mounting stability of the rear cover 40 is improved. Of course, in other embodiments, the rear cover 40 may be sleeved outside the end of the housing 10 provided with the air inlet 102.

In some embodiments, the mounting groove 11 has a bottom wall 111 and a peripheral wall 112 surrounding the bottom wall 111, the air inlet 102 is provided on the bottom wall 111, a portion of the bottom wall 111 near the peripheral wall 112 is provided with a avoidance hole 121 to form a avoidance bit 121, one side of the avoidance hole 121 forms a clamping position 131, the clamping portion 42 is provided on an end face of the rear cover 40 at the mounting opening 401, and the size of the clamping portion 42 is smaller than that of the avoidance hole 121. Specifically, the locking portion 42 is substantially in a lug shape on the rear cover 40, when the rear cover 40 is mounted, after the locking portion 42 extends into the avoidance hole 121, the locking portion 42 moves toward the locking position 131 by rotating the rear cover 40, and when the locking portion 42 is locked and matched with the locking position 131, the rear cover 40 can be fixed. By the arrangement, when the rear cover 40 is installed, the rear cover 40 can be blindly inserted into the installation groove 11, and the rear cover 40 is only required to be rotated until the clamping part 42 is opposite to the avoiding hole 121, so that the clamping part 42 can be inserted into the avoiding hole 121, and the installation of a user is facilitated.

Of course, in other embodiments, the mounting groove 11 has a bottom wall 111 and a peripheral wall 112 surrounding the bottom wall 111, the air inlet 102 is provided on the bottom wall 111, the peripheral wall 112 is provided with a first groove and a second groove, the first groove extends along the air inlet direction of the air inlet 102 and penetrates through the notch edge of the mounting groove 11, the second groove is connected to one end of the first groove near the bottom wall 111 and extends along the circumferential direction of the mounting groove 11, the first groove forms the avoidance bit 121, and the second groove forms the clamping bit 131. The clamping part 42 is convexly arranged on the outer side of the rear cover 40, when the rear cover 40 is installed in the installation groove 11, the clamping part 42 is slid in corresponding to the first groove, and when the clamping part 42 slides to the second groove, the rear cover 40 is rotated, so that the clamping part 42 is clamped in the second groove, and the rear cover 40 is fixed.

In some embodiments, a clamping hole 131 is formed on the bottom wall 111 and on one side of the avoidance hole 121 to form a clamping position 131, the clamping hole 131 is communicated with the avoidance hole 121 and is spaced from the peripheral wall 112, a convex strip 132 is arranged on the side wall, close to the peripheral wall 112, of the clamping hole 131, the convex strip 132 extends along the circumferential direction of the mounting groove 11, a first clamping groove 133 is arranged on the convex strip 132, a second clamping groove 421 is arranged on the outer side of the clamping portion 42, the second clamping groove 421 extends along the circumferential direction of the mounting opening 401, a clamping protrusion 422 is arranged in the second clamping groove 421, the clamping portion 42 is clamped into the clamping hole 131 from the avoidance hole 121, the convex strip 132 is clamped into the second clamping groove 421, and when the clamping protrusion 422 is clamped into the first clamping groove 133, the rear cover 40 is clamped and fixed on the housing 10.

Specifically, a first clamping groove 133 is disposed on a side of the protruding strip 132 opposite to the peripheral wall 112, at least one end of the second clamping groove 421 is disposed through, so that when the cover 40 rotates at the clamping portion 42, and the protruding strip 132 is aligned with the second clamping groove 421, the protruding strip 132 can be correspondingly clamped into the second clamping groove 421, and when the protruding strip 422 moves to the first clamping groove 133, the protruding strip can be clamped into the first clamping groove 133 along with the continued rotation of the rear cover 40. Through the cooperation of card protruding 422 and first draw-in groove 133 like this, can increase the resistance when joint portion 42 removes from card hole 131 towards dodging hole 121 for joint portion 42 is in card hole 131 steadily, and the cooperation of sand grip 132 and second draw-in groove 421 can restrict back lid 40 joint portion 42 and break away from in dodging hole 121 card income card hole 131, thereby guarantees the stable fixed of back lid 40, reduces the risk that back lid 40 dropped by oneself.

Of course, in other embodiments, the free end of the locking portion 42 is provided with a hook extending along the circumferential direction of the mounting opening 401, the bottom wall 111 is away from one side of the notch of the mounting groove 11 and is free beside the avoidance hole 121 to form the locking position 131, after the locking portion 42 extends into the avoidance hole 121, the locking portion is moved to the position where the hook is located at the locking position 131 along with the rotation of the rear cover 40, that is, the locking portion is abutted to one side of the bottom wall 111 away from the notch of the mounting groove 11, so as to limit the rear cover 40 from being separated from the mounting groove 11.

In some embodiments, the rear cover 40 is provided with at least two clamping portions 42, the plurality of clamping portions 42 are distributed at intervals in the circumferential direction of the mounting opening 401, and the housing 10 is provided with a avoidance bit 121 and a clamping bit 131 corresponding to each clamping portion 42. This increases the position of the engagement position 131 between the rear cover 40 and the housing 10, and can improve the mounting stability of the rear cover 40. Optionally, the rear cover 40 is provided with two clamping portions 42, the two clamping portions 42 are uniformly distributed at intervals in the circumferential direction of the mounting opening 401, and the housing 10 is provided with a avoidance bit 121 and a clamping bit 131 corresponding to each clamping portion 42. By this arrangement, the structure can be simplified, and the mounting stability of the rear cover 40 can be ensured. Of course, in other embodiments, the number of the clamping portions 42 may be one, three, four, or the like.

In some embodiments, the outer surface of the rear cover 40 is a convex arcuate surface that bulges away from the mounting opening 401, and the ventilation via 41 extends through the outer surface of the rear cover 40. Specifically, the outer surface of the rear cover 40 is an ellipsoid, sphere, or other arcuate surface. Through setting the outer surface of the rear cover 40 to be the convex cambered surface, more ventilation through holes 41 can be arranged on the convex cambered surface, the air inlet area of the air inlet 102 can be increased, so that the air flow velocity at the air inlet 102 can be reduced, and the possibility of noise generated by overlarge air flow velocity at the air inlet 102 can be reduced. Meanwhile, all the ventilation through holes 41 are uniformly distributed on the convex cambered surface, and the air flow flowing to the ventilation through holes 41 can better slide to each air inlet 102 along the convex cambered surface, so that the collision between the air inlet air flow and the convex cambered surface and the noise generated by the air flow disturbance can be reduced.

In some embodiments, the second screen 32 is removably coupled to the back cover 40, which facilitates removal of the second screen 32, e.g., replacement of the second screen 32.

In some embodiments, a limiting protrusion 43 is disposed on the inner surface of the rear cover 40 and near the mounting opening 401, and the shape of the second filter screen 32 is adapted to the shape of the inner cavity of the rear cover 40, so that the outer surface of the second filter screen 32 is attached to the inner surface of the rear cover 40, and the second filter screen 32 abuts against the side of the limiting protrusion 43 facing away from the mounting opening 401. That is, during installation, the second filter screen 32 can be directly plugged into the rear cover 40, and when the edge part of the second filter screen 32 is abutted against one side of the limiting convex part 43, which is away from the installation opening 401, the second filter screen 32 can be limited from falling off, so that the installation is convenient, the structures of the rear cover 40 and the second filter screen 32 can be simplified, and the production cost can be reduced.

In some embodiments, the first filter screen 31 includes an annular peripheral wall, a bottom wall covering one end of the annular peripheral wall, and a connection flange connected to the other end of the annular peripheral wall, where the connection flange is fixed to the housing 10, the annular peripheral wall is at least partially located outside the air inlet 102, and the annular peripheral wall and the bottom wall are both provided with a plurality of meshes. Therefore, the first filter screen 31 is simple in structure, the surface area of the first filter screen 31 can be increased, the air inlet area of the first filter screen 31 is increased, and the air inlet quantity can be increased. Of course, in other embodiments, the first filter 31 may also have an ellipsoidal shape, a hemispherical shape, a conical shape, or the like.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A hair dryer, comprising:

the shell is provided with an air inlet and an air outlet;

the fan assembly is arranged in the shell and is configured to drive airflow to flow from the air inlet to the air outlet;

the first filter screen is covered on the air inlet and is connected with the shell; and

the rear cover is provided with an installation opening and a plurality of ventilation through holes, the inner side of the rear cover is provided with a second filter screen covering the ventilation through holes, and the meshes of the first filter screen are smaller than those of the second filter screen;

one of the air inlet and the mounting opening is provided with a avoidance position and a clamping position, the other one of the air inlet and the mounting opening is provided with a clamping part, the avoidance position and the clamping position are distributed adjacently in the circumferential direction of the air inlet, and the clamping part can rotate from the avoidance position to the clamping position along the circumferential direction of the air inlet so as to be clamped at the clamping position.

2. The blower of claim 1, wherein a mounting groove is formed at an end of the housing away from the air outlet, the air inlet is disposed in the mounting groove, and the clamping position and the avoiding position are both disposed in the mounting groove and outside the air inlet.

3. The blower of claim 2, wherein the mounting groove has a bottom wall and a peripheral wall surrounding the bottom wall, the air inlet is provided in the bottom wall, a portion of the bottom wall near the peripheral wall is provided with a relief hole to form the relief position, one side of the relief hole forms the clamping position, the clamping portion is provided on the end face of the mounting opening of the rear cover, and the size of the clamping portion is smaller than the size of the relief hole.

4. A blower as claimed in claim 3, wherein a clamping hole is formed in the bottom wall and on one side of the avoidance hole to form the clamping position, the clamping hole is communicated with the avoidance hole and is spaced from the peripheral wall, a raised strip is arranged on a side wall of the clamping hole, which is close to the peripheral wall, the raised strip extends along the circumferential direction of the mounting groove, a first clamping groove is formed in the raised strip, a second clamping groove is formed in the outer side of the clamping part and extends along the circumferential direction of the mounting opening, a clamping protrusion is arranged in the second clamping groove, the clamping part is clamped into the clamping hole from the avoidance hole, and the rear cover is clamped and fixed in the housing when the raised strip is clamped into the second clamping groove and the clamping protrusion is clamped into the first clamping groove.

5. The hair dryer of claim 1, wherein said rear cover is provided with at least two of said snap-in portions, a plurality of said snap-in portions being circumferentially spaced apart about said mounting opening, said housing being provided with said relief and said snap-in positions for each of said snap-in portions.

6. The blower of claim 1, wherein the outer surface of the back cover is a convex arcuate surface that bulges away from the mounting opening, the ventilation through-hole extending through the outer surface of the back cover.

7. The blower of claim 1 wherein said second screen is removably attached to said rear cover.

8. The blower of claim 7, wherein the inner surface of the rear cover is provided with a limit protrusion near the mounting opening, the shape of the second filter screen is adapted to the shape of the inner cavity of the rear cover, so that the outer surface of the second filter screen is attached to the inner surface of the rear cover, and the second filter screen is abutted against the side of the limit protrusion facing away from the mounting opening.

9. The blower of claim 1 wherein said first screen includes an annular peripheral wall, a bottom wall overlying one end of said annular peripheral wall, and a connecting flange connected to the other end of said annular peripheral wall, said connecting flange being secured to said housing, said annular peripheral wall being at least partially outboard of said air intake, said annular peripheral wall and said bottom wall each having a plurality of openings therein.

10. The blower of claim 1, wherein the housing includes a main body portion provided with the air inlet and the air outlet, and a handle portion connected to one side of the main body portion, the handle portion being provided with a circuit device including one or more control keys and a power cord connected to the circuit device, the blower assembly being connected to the circuit device, a heat generating assembly being provided between the air outlet and the blower assembly, the heat generating assembly being electrically connected to the circuit device.