CN213487439U

CN213487439U - Hair drier

Info

Publication number: CN213487439U
Application number: CN202021468430.3U
Authority: CN
Inventors: 许东东
Original assignee: Dreame Technology Shanghai Co Ltd
Current assignee: Dreame Technology Shanghai Co Ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-06-22
Anticipated expiration: 2030-07-23
Also published as: CN215899069U

Abstract

The application discloses a hair drier, which comprises a shell, a front air duct shell, a rear air duct shell and a front air duct net, wherein the shell consists of a front shell and a rear shell; wherein, an air duct is formed in the front air duct shell and the rear air duct shell, and a plurality of notches communicated with the mesh of the front air net are arranged on the front air duct shell. By the above mode, when the air is exhausted out of the front air duct shell, the front end of the front air duct shell can form an effective negative pressure area; the negative pressure area can lead the other part of outside air to be led in through the front air inlet net and guided to the front end of the front air channel shell through the notch, so that the air quantity performance parameter is obviously increased.

Description

Hair drier

Technical Field

The application relates to the technical field of household appliances, in particular to a small mini-shaped hair drier.

Background

Hair dryers are small household appliances that are often used in our lives, and are mainly used for drying and shaping hair. When the existing hair dryer is used, the fan blades are driven to rotate by an internal motor, so that external air is sucked into the shell and is discharged through the air outlet; since the hot air discharged at the air outlet at a high speed is subjected to a large resistance, the air volume performance of the hair dryer is reduced, and a good air output is difficult to obtain. In addition, the heating components of the blower in the prior art are fixed in the shell by screws, so that more parts are needed in the mode, the installation steps are complicated, and the assembly and production of products are not facilitated. Therefore, there is a need to design a new blower to address the above problems.

SUMMERY OF THE UTILITY MODEL

To overcome the defects in the prior art, the application provides the hair drier.

In order to solve the technical problem, the technical scheme adopted by the application is as follows:

a hair dryer, comprising: a housing composed of a front housing and a rear housing; a front duct housing disposed in the front housing; a rear duct housing disposed in the rear housing; and a forward air net disposed on the forward housing; wherein, air ducts are formed in the front air duct shell and the rear air duct shell; the front air duct shell is provided with a plurality of notches communicated with the meshes of the front air duct net.

Preferably, the PCB circuit board is arranged in the shell; part of the PCB circuit board extends into the air duct; the width direction plane of the PCB circuit board is parallel to the central axis of the air duct.

Preferably, a heating component is arranged in the air duct; wherein, the front part of the heating component is provided with an inwards concave structure which is matched with the front air duct shell for limiting; the rear part of the heating component is clamped on the rear air duct shell.

Preferably, the fixing plug is arranged between the heating component and the PCB circuit board in an interference manner.

Preferably, the front air duct shell and the rear air duct shell are hermetically and alternately matched; the air duct is a straight-line-shaped sealing air duct structure.

Preferably, a rear air inlet component is arranged on the rear shell; the rear air inlet assembly comprises an inner filter screen fixed between the rear shell and the rear air duct shell; a rear air inlet net sleeved on the rear shell; and a rear net cap screwed on the rear shell.

Preferably, a lamp sleeve is arranged in the shell; dispose a plurality of leaded light hole structures on the lamp cover to dispose the function and press keyway platform structure.

Preferably, the left side and the right side of the shell are both provided with silica gel pads; the distance between the outer end faces of the silica gel pads on the two sides is the maximum width of the blower in the left-right direction.

Preferably, the rear air duct shell is provided with an inserting nozzle; a PCB sealing plug is fixed in the plug-in mouth; wherein the PCB circuit board passes through the PCB sealing plug and partially extends into the air duct.

Preferably, a motor is fixed in the rear air duct shell.

Compared with the prior art, the application has the beneficial effects that:

according to the hair drier provided by the application, the front air duct shell is provided with a plurality of notches communicated with the mesh holes of the front air duct, and when air is exhausted out of the front air duct shell, the front end of the front air duct shell can form an effective negative pressure area; the negative pressure area can lead the other part of outside air to be led in through the front air inlet net and guided to the front end of the front air duct shell through the notch; through the mode, the air volume control method and the air volume control device can generate the coanda effect, and further obviously increase the air volume performance parameters. Furthermore, the heating component is limited by the combination of the front air duct shell, the rear air duct shell and the PCB, can be stably and reliably installed in the air duct, and meanwhile, a screw-free fixing scheme is realized. The device is simple in structure, compact and reliable in installation, optimizes the length and diameter parameters of the appearance structure of the product, and has high practical value.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

figure 1 is a front view and a side view of a blower as proposed in the present application;

FIG. 2 is a schematic view of an air outlet scheme of a hair dryer proposed in the present application;

figure 3 is a schematic cross-sectional view of a hair dryer according to the present application;

FIG. 4 is a schematic structural view of a rear intake assembly according to the present application;

FIG. 5 is a second schematic structural view of a rear intake assembly according to the present application;

figure 6 is a schematic view of the internal structure of a hair dryer proposed by the present application;

FIG. 7 is a schematic view of the heating element and the fixing plug of the present application shown in a mated and exploded view;

FIG. 8 is a schematic view of the heating element and rear duct shell as disclosed herein, shown mated and exploded;

FIG. 9 is a schematic view of the assembly of the PCB circuit board and PCB sealing plug proposed in the present application;

FIG. 10 is one of the assembly schematics of the lamp sleeve proposed in the present application;

FIG. 11 is a second schematic view of the assembly of the lamp housing of the present application;

figure 12 is a schematic view of an exploded view of a hair dryer as proposed in the present application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

As shown in fig. 1-12, the present application provides a hair dryer comprising: a casing composed of a front casing 11 and a rear casing 12, a front air duct casing 21 arranged in the front casing 11, a rear air duct casing 22 arranged in the rear casing 12, a front air net 51 arranged on the front casing 11, a rear air intake component arranged on the rear casing 12, a PCB circuit board 6 arranged in the casing, a heating component 4 and a motor 3; wherein, an air duct is formed in the front air duct shell 21 and the rear air duct shell 22; the front duct case 21 is provided with a plurality of notches 210 communicating with the meshes of the front air net 51.

Specifically, the heating component 4 and the motor 3 are arranged in the air duct; further, part of the heating component 4 is disposed in the front air duct shell 21, and the motor 3 is fixed in the rear air duct shell 22; the front air duct shell 21 is an integrally formed whole, and the rear air duct shell 22 is composed of a first rear air duct shell 221 and a second rear air duct shell 222 which are fastened with each other.

It can be understood that the motor 3 can be powered on to operate, and external air is sucked from the air inlet of the rear air inlet assembly and is exhausted to the front end through the air outlet of the front air duct shell 21; in the process of air flowing through the air duct, the heating component 4 in operation can heat the air so as to enable the discharged air to become hot air; when the air is discharged out of the front air duct shell 21, an effective negative pressure area is formed at the front end of the front air duct shell 21; the negative pressure region causes another part of the external air to be introduced through the front air inlet net 51 and guided to the front end of the front air duct shell 21 through the notch 210; through the mode, the air volume control method and the air volume control device can generate the coanda effect, and further obviously increase the air volume performance parameters.

As an embodiment of the present application, the front air duct shell 21 and the rear air duct shell 22 are hermetically inserted and matched to form a "straight" type sealed air duct structure; based on this, the wind channel between air intake and the air outlet can not leak out, and can reduce the resistance of circulation of air.

Referring to fig. 3, the front air duct casing 21 of the present application is formed with a concave head portion (not shown), and a plurality of notches 210 are uniformly arranged along the circumferential direction of the front air duct casing 21.

Specifically, the notch 210 has an inward concave size K and a length L, and an included angle C is configured between the notch and the central axis of the air duct; in order to ensure that an effective negative pressure area can be formed at the front end of the front air duct shell 21 when high-speed air blowing is carried out, the concave size K of the notch 210 is limited to be more than 3 mm; because the larger the included angle C and the length L are, the better the smoothness of negative pressure air suction is, and the maximum values of the included angle C and the length L are preferably selected.

The values of the included angle C and the length L are limited by the total diameter of the air outlet and the total size structure of the product.

In a specific application scene, the front part of the heating component 4 is provided with an inner concave structure 41 which is matched with the front air duct shell 21 for limiting; the rear part of the heating component 4 is clamped on the rear air duct shell 22.

In particular, the female structure 41 can be rested against the inner side of the female head; the two symmetrical directions of the inner diameter M of the rear air duct shell 22 are provided with clamping grooves 223, and the structure of the rear diameter F of the heating component 4 is clamped in the clamping grooves 223 to prevent the heating component 4 from deflecting and shaking.

Further, a part of the PCB 6 extends into the air duct, and a fixing plug 40 is disposed between the heating element 4 and the PCB 6 with interference so that the rear portion of the heating element 4 is pressed against the PCB 6 by the fixing plug 40, thereby preventing the heating element 4 from moving in the air duct direction.

Through the mode, the heating component 4 is combined and limited through the front air duct shell 21, the rear air duct shell 22 and the PCB circuit board 6, and meanwhile, a screw-free fixing scheme is achieved.

Further, the rear duct shell 22 is provided with a plug 220, and a PCB sealing plug 60 is fixed in the plug 220; the PCB circuit board 6 passes through the PCB sealing plug 60 and partially extends into the air duct; the length D of the PCB circuit board 6 extending into the air duct is basically equal to the diameter of the air duct; the width direction plane W of the PCB 6 is parallel to the central axis of the air duct, and the heat generating device arranged on the PCB 6 is arranged in the air duct. Based on the structure, the PCB 6 can block the air channel as little as possible, thereby not only improving the air quantity, but also reducing the air noise; meanwhile, the structure can effectively reduce the temperature rise of the heating device, thereby prolonging the service life of the device.

As shown in fig. 4 and 5, as an embodiment of the present application, the rear air intake assembly includes an inner filter screen 52 fixed between the rear casing 12 and the rear duct casing 22; a rear air inlet net 53 sleeved on the rear housing 12; and a rear mesh cap 54 that is threaded onto the rear housing 12.

Specifically, the inner filter screen 52 is formed with an outer edge (not shown), which is sandwiched between the rear casing 12 and the rear duct casing 22; the back shell 12 is provided with a rotary buckle groove 120, and the back net cap 54 is provided with a rotary buckle 540 which can be buckled with the rotary buckle groove 120; further, the rear air intake net 53 is disposed outside the inner screen 52 and is interposed between the rear case 12 and the rear hood 54. Based on above-mentioned structure, the subassembly of intaking after the equipment is difficult for rocking and deviating from, and realizes product appearance structure length and diameter parameter minimizing.

As an embodiment of the present application, a plurality of display lamps 70 are configured on the PCB 6, and a plurality of lamp sleeves 7 correspondingly buckled on the display lamps 70 are disposed in the housing; wherein, the lamp cover 7 is configured with a plurality of light guide hole structures for displaying the light emitted from the display lamp 70.

Furthermore, a plurality of functional keys 8 are arranged on the shell in a floating manner, and a functional key slot platform structure is configured on the lamp sleeve 7; wherein the functional key platform structure can form an effective fit with the front case 11 and the rear case 12. Based on the structure, the lamp sleeve 7 and the key structure can be assembled together, and the structure of other parts is facilitated to be simplified.

Considering that when the hair dryer is placed on the table top, the outer coating of the machine main body is easily scratched or hung; in order to prevent the adverse effect, the left side and the right side of the shell are both provided with silica gel pads 9; wherein, the outer end face interval A of the silica gel pads 9 at the two sides is the maximum width of the blower along the left-right direction.

Specifically, the silicone pad 9 is substantially T-shaped and is sandwiched between the front casing 11 and the rear casing 12, and a groove for accommodating the root of the silicone pad 9 is formed on the outer wall of the rear duct casing 22.

In the application, the bottom of the shell is provided with a power line 14, and the power line 14 is connected to the PCB 6; the junction of the power cord 14 and the housing is fitted with a decorative sleeve 13.

In summary, the front air duct shell is provided with a plurality of notches communicated with the mesh holes of the front air duct, and when air is exhausted out of the front air duct shell 21, the front end of the front air duct shell 21 forms an effective negative pressure area; the negative pressure region causes another part of the external air to be introduced through the front air inlet net 51 and guided to the front end of the front air duct shell 21 through the notch 210; through the mode, the air volume control method and the air volume control device can generate the coanda effect, and further obviously increase the air volume performance parameters.

The above description is only for the purpose of illustrating embodiments of the present invention and is not intended to limit the scope of the present invention, and all modifications, equivalents, and equivalent structures or equivalent processes that can be used directly or indirectly in other related fields of technology shall be encompassed by the present invention.

Claims

1. A hair dryer is characterized by comprising

A case composed of a front case (11) and a rear case (12);

a front air duct case (21) disposed in the front case (11);

a rear air duct case (22) disposed in the rear housing (12); and

a front air net (51) disposed on the front case (11);

wherein, an air duct is formed in the front air duct shell (21) and the rear air duct shell (22); the front air duct shell (21) is provided with a plurality of notches (210) communicated with the meshes of the front air duct net (51).

2. The hair dryer of claim 1, further comprising a PCB circuit board (6) disposed in said housing;

part of the PCB circuit board (6) extends into the air duct;

the width direction plane of the PCB circuit board (6) is parallel to the central axis of the air duct.

3. The hair dryer of claim 2, wherein a heating component (4) is arranged in the air duct;

wherein, the front part of the heating component (4) is provided with an inner concave structure (41) which is matched with the front air duct shell (21) for limiting;

the rear part of the heating component (4) is clamped on the rear air duct shell (22).

4. The hair dryer of claim 3, characterized in that a fixing plug (40) is arranged with interference between the heating component (4) and the PCB circuit board (6).

5. The hair dryer of claim 1, wherein the front air duct shell (21) and the rear air duct shell (22) are sealingly interfitted;

the air duct is a straight-line-shaped sealing air duct structure.

6. The hair dryer of claim 1, wherein a rear air intake assembly is provided on the rear housing (12); the rear air intake assembly comprises

An inner filter screen (52) fixed between the rear shell (12) and the rear air duct shell (22);

a rear air inlet net (53) sleeved on the rear shell (12); and

a rear mesh cap (54) threaded onto the rear housing (12).

7. The hair dryer of claim 1, wherein a lamp housing (7) is provided in the housing;

the lamp sleeve (7) is provided with a plurality of light guide hole structures and a function key groove platform structure.

8. The hair dryer of claim 1, wherein silicone pads (9) are provided on both left and right sides of the housing;

the distance between the outer end faces of the silica gel pads (9) on the two sides is the maximum width of the hair drier in the left-right direction.

9. The hair dryer of claim 2, wherein the rear air duct shell (22) is provided with a nozzle (220);

a PCB sealing plug (60) is fixed in the plug-in mouth (220);

wherein the PCB wiring board (6) passes through the PCB sealing plug (60) and extends partially into the air duct.

10. The hair dryer of claim 1, wherein a motor (3) is fixed in the rear duct casing (22).