CN109171158B

CN109171158B - Hair drier

Info

Publication number: CN109171158B
Application number: CN201811325795.8A
Authority: CN
Inventors: 徐欣怡
Original assignee: Zhejiang Siau Electric Appliances Co ltd
Current assignee: Zhejiang Siau Electric Appliances Co ltd
Priority date: 2018-11-08
Filing date: 2018-11-08
Publication date: 2024-01-12
Anticipated expiration: 2038-11-08
Also published as: CN109171158A

Abstract

The invention relates to a hair dryer, which comprises a shell, wherein an air inlet and an air outlet are arranged at two ends of the shell, an air flow assembly is arranged in a flow channel, air is sucked from the air inlet and is discharged from the air outlet to generate air flow, the air flow assembly comprises a motor, the air inlet is provided with an air inlet panel, the shape of the air inlet panel and the shape of the shell are precisely designed, the air inlet area of the air inlet panel of the hair dryer can be larger than that of a round air inlet area, the curvature is small, the air flow disorder is reduced, the wind noise is reduced, the wind inlet quantity is increased, the problem of stress concentration is avoided, the air flow speed of the air outlet is increased, and hair is easier to blow up and blow dry.

Description

Hair drier

Technical Field

The invention relates to a blower, in particular to a blower capable of reducing noise and increasing air intake.

Background

The most common prior art hair dryer is a circular air inlet and a cylindrical housing, as shown in fig. 1, the circular air inlet provides a certain air intake to prevent hair from entering the air inlet. However, the circular air inlet makes the air flow collide with each other easily on the circular inner surface, so that turbulence is caused, vibration is induced, and noise is increased. Moreover, the wind guide blade of the existing circular air inlet is rotary air inlet, dynamic pressure loss is large when rotary flow passes through the safety protection rear cover, the air inlet is easy to block, the air inlet quantity is small, the air quantity of heat exchange is reduced, the axial air flow is insufficient, and vibration of the fan blade in high-speed operation are aggravated, so that the whole machine vibrates.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the blower with low noise and large air intake.

The technical scheme of the invention is as follows: a hair dryer comprising a housing having a flow passage extending along an axis of the housing, the housing having an air inlet and an air outlet at both ends, an air flow assembly located in the flow passage for drawing air from the air inlet and discharging air from the air outlet to create an air flow, the air flow assembly comprising a motor, the air inlet being provided with an air inlet panel, wherein l ₁ Is the horizontal symmetry line of the air inlet panel, l ₂ Is the vertical symmetry line of the air inlet panel, A, B is the contour line of the air inlet panel and the symmetry line l respectively ₂ 、l ₁ A is the curve length between A, B points, c is the straight line segment length between A, B points, X is the ratio of the curve segment length between A and B points to the straight line segment length between A, B points, X=a/c, and the value range of X is 1.145<X≦1.198；

Further, the value range of X is 1.145< X < 1.175;

further, the grids of the air inlet panel are arranged in a layered mode.

Further, the upper and lower surfaces of the shell are vertically symmetrical relative to the axis of the shell, and the included angle between the projection of the upper and lower surfaces of the shell in the vertical direction and the axis of the shell is theta ₁ The left and right surfaces of the shell are symmetrical relative to the shell axis, and the included angle between the projection of the left and right surfaces of the shell in the horizontal direction and the shell axis is theta ₂ ，θ ₁ The value range of (2) is 2.5 DEG to theta ₁ ≦6°，θ ₂ The value range of (2) is equal to or less than theta ₂ ≦5°。

Further, the air outlet of the blower shell is also connected with a tuyere, the air inlet end of the tuyere is connected with the air outlet in a clamping mode, the cross section area of the air outlet end of the tuyere is smaller than that of the air inlet end, the included angle between the projection of the upper surface and the lower surface of the tuyere in the vertical direction and the axis of the shell is 0-20 degrees, an inner tube is arranged in the air outlet end of the tuyere, the shape of the inner tube is identical to that of the air outlet end, and a reinforcing rib is arranged between the inner tube and the air outlet end.

The invention has the following beneficial effects: the air inlet area of the electric hair drier air inlet panel is larger than that of a circular air inlet, the curvature is small, the air flow disorder is reduced, the air noise is reduced, the air inlet quantity is increased, the problem of stress concentration is avoided, the air flow speed of an air outlet is increased, and hair is blown up and dried more easily.

Drawings

Fig. 1 is a schematic view of a prior art blower.

Fig. 2 is a schematic view of the shape of the blower inlet panel.

FIG. 3 is a schematic view of an air inlet panel grille.

Fig. 4 is a front view of the blower housing.

Figure 5 is a top view of the blower housing.

Fig. 6 is a schematic view of a blower with a mouthpiece.

Fig. 7 is a three view of a blower nozzle.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 2 to 7, a blower comprising a housing having a flow passage extending along an axis of the housing, an air inlet and an air outlet at both ends of the housing, an air flow assembly in the flow passage for drawing air from the air inlet and discharging air from the air outlet to generate an air flow, the air flow assembly comprising a motor, the air inlet being provided with an air inlet panel, wherein l ₁ Is the horizontal symmetry line of the air inlet panel, l ₂ The water is taken as the vertical symmetry line of the air inlet panelThe square symmetry line and the vertical symmetry line refer to the symmetry line of the contour line of the air inlet panel projected along the axial direction of the shell, and A, B is the contour line of the air inlet panel and the symmetry line l respectively ₂ 、l ₁ A is the curve length between A, B points, c is the straight line segment length between A, B points, X is the ratio of the curve segment length between A and B points to the straight line segment length between A, B points, X=a/c, and the value range of X is 1.145<X is less than or equal to 1.198, more preferably 1.145<X is less than or equal to 1.175; the air inlet area of the electric hair drier air inlet panel is larger than that of a round air inlet panel, the curvature is small, the air flow disorder is reduced, the air noise is reduced, the air inlet quantity is increased, and the problem of stress concentration is avoided.

As shown in fig. 3, the grille of the air inlet panel is arranged in a layered manner in order to further prevent the air flow from being disturbed.

As shown in fig. 4-5, in order to increase the air flow rate of the air outlet, so that the hair is more easily blown up and dried, the upper and lower surfaces of the housing are vertically symmetrical with respect to the axis of the housing, and the projection of the upper and lower surfaces of the housing in the vertical direction forms an angle theta with the axis of the housing ₁ The left and right surfaces of the shell are symmetrical relative to the shell axis, and the included angle between the projection of the left and right surfaces of the shell in the horizontal direction and the shell axis is theta ₂ ，θ ₁ The value range of (2) is 2.5 DEG to theta ₁ ≦6°，θ ₂ The value range of (2) is equal to or less than theta ₂ ≦5°。

As shown in fig. 6-7, the air outlet of the blower housing is further connected with a tuyere, the air inlet end of the tuyere is clamped with the air outlet, the cross-sectional area of the air outlet end of the tuyere is smaller than that of the air inlet end, the included angle between the projection of the upper surface and the lower surface of the tuyere in the vertical direction and the axis of the housing is 0-20 degrees, an inner tube is arranged in the air outlet end of the tuyere, the shape of the inner tube is the same as that of the air outlet end, and a reinforcing rib is arranged between the inner tube and the air outlet end.

The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.

Claims

1. A hair dryer comprising a housing having a flow passage extending along an axis of the housing, the housing having an air inlet and an air outlet at both ends, an air flow assembly located in the flow passage for drawing air in from the air inlet and for exhausting air from the air outlet to create an air flow, the air flow assembly comprising a motor, the air inlet being provided with an air inlet panel, characterized in that: l (L) ₁ Is the horizontal symmetry line of the air inlet panel, l ₂ Is the vertical symmetry line of the air inlet panel, A, B is the contour line of the air inlet panel and the symmetry line l respectively ₂ 、l ₁ A is the curve length between A, B points, c is the straight line segment length between A, B points, X is the ratio of the curve segment length between A and B points to the straight line segment length between A, B points, and x=a/c;

x is 1.145< X < 1.175;

the grids of the air inlet panel are arranged in a layered manner;

the air outlet of the blower shell is also connected with a tuyere.

2. A hair dryer according to claim 1, wherein: the upper and lower surfaces of the shell are vertically symmetrical relative to the axis of the shell, and the included angle between the projection of the upper and lower surfaces of the shell in the vertical direction and the axis of the shell is theta ₁ The left and right surfaces of the shell are symmetrical relative to the shell axis, and the included angle between the projection of the left and right surfaces of the shell in the horizontal direction and the shell axis is theta ₂ ，θ ₁ The value range of (2) is 2.5 DEG to theta ₁ ≦6°，θ ₂ The value range of (2) is equal to or less than theta ₂ ≦5°。

3. A hair dryer according to claim 1, wherein: the air inlet end of the air nozzle is connected with the air outlet in a clamping mode, the cross section area of the air outlet end of the air nozzle is smaller than that of the air inlet end, the included angle between the projection of the upper surface and the lower surface of the air nozzle in the vertical direction and the axis of the shell is 0-20 degrees, an inner tube is arranged in the air outlet end of the air nozzle, the shape of the inner tube is identical to that of the air outlet end, and a reinforcing rib is arranged between the inner tube and the air outlet end.