CN112401441A

CN112401441A - Hand-held electric hair drier

Info

Publication number: CN112401441A
Application number: CN202011010666.7A
Authority: CN
Inventors: 张卫东; 陈利权
Original assignee: Guangzhou Ousheng Commerce And Trade Development Co ltd
Current assignee: Guangzhou Ousheng Commerce And Trade Development Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-02-26

Abstract

The invention provides a handheld electric hair drier. The hand-held hair dryer comprises a main body comprising a primary fluid outlet, a fan unit, a heating element, an air circulation chamber, an outer wall, and an inner wall disposed within the outer wall, the outer and inner walls forming a duct. A duct extends within the outer wall of the main body and the duct extends to the air circulation chamber such that fluid drawn by the duct enters the fan unit. The duct has a spatially enlarged neck through which the duct is connected to the air circulation chamber. The fan unit draws fluid through the duct and conveys the fluid past the heating element such that the fluid is heated and then flows out of the primary fluid outlet.

Description

Hand-held electric hair drier

Technical Field

The present invention relates to the field of hand-held household appliances, in particular to a hand-held hair dryer for hair care and hair drying appliances such as hair dryers and heat-setting brushes.

Background

Based on the characteristic that the hair dryer can be rapidly shaped and dried, the hair dryer has a large audience group. The fan unit in the blower can suck air flow from an air inlet of the blower and send the sucked air flow out from an air outlet opposite to the air inlet, so that the drying purpose is achieved. Additionally, hot air blowers (such as heat styling brushes) are used to style hair in either a wet or dry condition. The air outlet of the blower can be connected with an air nozzle, the air speed of the air flow can be improved through the air nozzle, the air flow can be concentrated, and the purpose of modeling is achieved.

The most important performance for a hair dryer is comfort and safety, and it is generally difficult to compromise both with current hair dryers. Particularly, for the travelling comfort, the most direct problem is the time of hair drying, for the great women of hair volume, often dry the hair and need the time of ten minutes to still need swing, the removal hair-dryer that must not stop blow-dry in-process, waste time and energy, lead to the arm hard, influence and use experience. There are no two ways to dry hair quickly, either to raise the temperature or to increase the air volume. The first approach, commonly used by conventional hair dryers, is to increase the temperature to shorten the time required to dry the hair. But high temperatures are prone to safety issues: the hair is baked to be dry, scales and branches are generated, and the scalp is damaged at high temperature. The second way is to increase the air volume only by increasing the motor to drive a larger fan, but the weight and noise of the hair dryer are increased, and the experience is more affected.

Dyson hair dryers are widely accepted by users. The Dyson high-speed digital motor carried by the Dyson hair drier has the advantages that the rotating speed per minute reaches more than 110000 revolutions (twenty-three thousand revolutions per minute of the rotating speed of most hair driers on the market), three times of strong airflow is sprayed by an Air Amplifier airflow multiplication technology, wet hair can be dried in seconds under high-pressure spraying airflow, and the damage to the hair is reduced. Meanwhile, due to the ultrahigh frequency rotating speed of the motor, the frequency of the generated partial noise is very high, and a noise person higher than the upper limit of the common ear hearing (twenty kilohertz) cannot hear the partial noise, so the noise is small. The hollow fluid circulation pipe utilized by the dyson patent CN105473022B makes the coanda effect effective. The coanda effect is the tendency of the air flow to change from its original direction of flow to flow along a convex object surface and to escape the surrounding fluid into this jet, creating a region of lower pressure (wikipedia) around it due to the change in direction of fluid movement. The coanda effect is used to greatly increase the airflow.

Disclosure of Invention

The invention mainly solves the technical problem of providing a handheld electric hair drier which can provide high-pressure jet air flow and simultaneously improve air supplement speed so as to reduce negative pressure to realize air flow balance, thereby improving energy utilization efficiency. In addition, the handheld electric hair drier accelerates the heat dissipation efficiency of the main body of the handheld electric hair drier under the condition of increasing the air outlet speed of a unit area, and avoids scalding caused by overheating.

In order to solve the technical problems, the invention adopts a technical scheme that a handheld electric hair drier is provided and comprises a main body and a handle. The main body comprises a primary fluid outlet, a fan unit, a heating element, an air circulation chamber, an outer wall and an inner wall arranged within the outer wall, the outer wall and the inner wall forming a duct. The duct extends within an outer wall of the main body and the duct extends to the air circulation chamber such that fluid drawn by the duct enters the fan unit. The duct has a spatially enlarged neck through which the duct is connected to the air circulation chamber. The fan unit draws fluid through the duct and conveys the fluid past the heating element such that the fluid is heated and exits the primary fluid outlet.

Generally, a fan unit driven by a digital high-speed motor sucks air fluid to provide high-pressure jet air flow, negative pressure is formed if the air fluid at the front end of the fan unit is not sufficiently supplemented, disturbance is caused to the air flow discharged from the rear end of the fan unit, on one hand, the air outlet speed per unit area is reduced, and on the other hand, large air noise is generated due to air flow disturbance and transverse friction. The pipeline of the handheld electric hair drier provided by the invention improves the air supplement speed through the coanda effect so as to reduce the negative pressure to realize the air flow balance, and on the other hand, eliminates the air flow disturbance so as to reduce the air noise. In addition, the high-speed fluid in the pipeline is beneficial to the heat dissipation of the main body of the hand-held hair dryer, particularly the vicinity of the main fluid outlet, so as to avoid the scald of a user caused by the overheating of the main body.

In a preferred embodiment, the outer wall of the body includes a first aperture that connects to the conduit, the first aperture including a plurality of apertures that extend at least partially around the body.

In a preferred embodiment, said first aperture is adjacent said primary fluid outlet.

In a preferred embodiment, the first aperture is remote from the primary fluid outlet.

In a preferred embodiment, the conduit is annular.

In a preferred embodiment, the main body further comprises a second aperture, the primary fluid outlet, the air circulation chamber and the second aperture being in proximal line connection, the second aperture comprising a plurality of apertures.

In a preferred embodiment, the body further comprises a third aperture connected to the air circulation chamber by at least two corners.

In a preferred embodiment, the third holes are symmetrically disposed at both sides of the body.

In a preferred embodiment, the handle is connected to the fan unit at a location on the main body.

In a preferred embodiment, a power cable for supplying power to the fan unit extends through an end of the handle.

Drawings

The invention and its advantages will be better understood by studying the following detailed description of specific embodiments, given by way of non-limiting example, and illustrated in the accompanying drawings, in which:

fig. 1 is a sectional structural view of the hand-held hair dryer of embodiment 1 of the present invention.

Fig. 2 is a sectional structure view of the main body of the hand-held hair dryer of embodiment 1 of the present invention.

Fig. 3 is a side view of a hand-held hair dryer of embodiment 2 of the present invention.

Fig. 4 is a schematic view of a fluid flow path in embodiment 2 of the present invention.

Detailed Description

Referring to the drawings, wherein like reference numbers refer to like elements throughout, the principles of the present invention are illustrated in an appropriate environment. The following description is based on illustrated embodiments of the invention and should not be taken as limiting the invention with regard to other embodiments that are not detailed herein.

The word "embodiment" is used herein to mean serving as an example, instance, or illustration. In addition, the articles "a" and "an" as used in this specification and the appended claims may generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Further, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise direct contact of the first and second features through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Example 1

First, a hand-held hair dryer according to embodiment 1 of the present invention will be described with reference to fig. 1 to 2. One technical solution adopted in this embodiment is to provide a hand-held hair dryer, which includes a main body 10 and a handle 11. As shown in fig. 1, the main body 10 comprises a primary fluid outlet 101, a heating element 102, a fan unit 103, an air circulation chamber 104, an outer wall 105 and an inner wall 106 arranged within said outer wall 105, said outer wall 105 and said inner wall 106 forming a duct 107. As shown in fig. 2, the duct 107 extends within the outer wall 105 of the main body 10 and the duct 107 extends to the air circulation chamber 104, so that fluid drawn by the duct 107 enters the fan unit 103. The duct 107 has a spatially enlarged neck 1071, the duct 107 being connected to the air circulation chamber 104 via the neck 1071. The fan unit 103 draws fluid through the duct 107 and conveys the fluid past the heating element 102 so that the fluid is heated and exits the primary fluid outlet 101.

Generally, the fan unit 103 driven by the digital high-speed motor sucks air fluid to provide high-pressure jet air flow, negative pressure is formed if the air fluid at the front end of the fan unit 103 is not sufficiently supplemented, and disturbance is caused to the air flow discharged at the rear end of the fan unit 103, so that the air outlet speed per unit area is reduced, and on the other hand, the air flow disturbance and the transverse friction generate large air noise. The duct 107 of the hand-held hair dryer of the present invention has a neck 1071 with enlarged space, the duct 107 is connected with the air circulation chamber 104 through the neck 1071, the air circulation chamber 104 forms a low pressure area and promotes the air supplement speed through the coanda effect to reduce the negative pressure to realize the air flow balance, and on the other hand, eliminates the air flow disturbance to reduce the air noise. Furthermore, the high speed of the fluid in said duct 107 facilitates the dissipation of heat from the main body 10 of the hand-held hair dryer, in particular in the vicinity of the main fluid outlet 101, in order to avoid overheating of the main body 10 and thus scalding of the user. The conduit 107 is annular.

The outer wall 105 of the body 10 includes a first aperture 1051, the first aperture 1051 connecting to the conduit 107, the first aperture 1051 including a plurality of apertures extending at least partially around the body 10. The first aperture 1051 is proximate to the primary fluid outlet 101.

The handle 11 is connected to the main body 10 at a position where the fan unit 103 is located. A power cable for supplying power to the fan unit 103 extends through an end of the handle 11.

The embodiment provides a hand-held type hairdryer, can provide the high pressure and spray promoting the speed of making up the wind in order to reduce the negative pressure and in order to realize the air current balance when the air current to promote energy utilization efficiency. In addition, the handheld electric hair drier accelerates the heat dissipation efficiency of the main body of the handheld electric hair drier under the condition of increasing the air outlet speed of a unit area, and avoids scalding caused by overheating.

Example 2

Fig. 3-4 are side views of the hand-held hair dryer of embodiment 2 of the present invention. Only the differences between embodiment 2 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.

The main body 10 further comprises a second aperture 1011, the main fluid outlet 101 and the air circulation chamber 104 being in close-line communication with the second aperture 1011, the second aperture 1011 comprising a plurality of apertures.

As shown in fig. 2 (the direction of the dotted arrow indicates the fluid flow direction), which is a schematic view of the fluid flow path of embodiment 2, the main body 10 further includes a third hole 1061, and the third hole 1061 is connected to the air circulation chamber 104 by two corners 10611. The third holes 1061 are symmetrically disposed at both sides of the body 10.

While the invention has been described above with reference to certain embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the various embodiments of the present disclosure may be used in any combination, provided that there is no structural conflict, and the combination is not exhaustively described in this specification for brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A hand held hair dryer comprising a main body and a handle, the main body comprising a primary fluid outlet, a fan unit, a heating element, an air circulation chamber, an outer wall and an inner wall disposed within said outer wall, said outer wall and said inner wall forming a duct, characterized in that: the duct extends within the outer wall of the main body and the duct extends to the air circulation chamber such that fluid drawn by the duct enters the fan unit; the pipe is provided with a neck part with enlarged space, and the pipe is connected with the air circulation chamber through the neck part; the fan unit draws fluid through the duct and conveys the fluid past the heating element such that the fluid is heated and exits the primary fluid outlet.

2. The hand-held hair dryer of claim 1 wherein said outer wall of said body includes a first aperture, said first aperture connecting said duct, said first aperture including a plurality of apertures, said plurality of apertures extending at least partially around said body.

3. The hand held hair dryer of claim 2, wherein said first aperture is proximate to said primary fluid outlet.

4. The hand held hair dryer of claim 2, wherein said first aperture is remote from said primary fluid outlet.

5. Hand-held hair dryer according to claim 1, characterized in that said duct is annular.

6. The hand-held hair dryer of claim 1 wherein said main body further comprises a second aperture, said primary fluid outlet, said air circulation chamber and said secondary aperture being in close linear communication, said secondary aperture comprising a plurality of apertures.

7. The hand held hair dryer according to claim 6, characterized in that said main body further comprises a third aperture, said third aperture being connected to said air circulation chamber through at least two corners.

8. Hand-held hair dryer according to claim 7, characterized in that said third apertures are symmetrically arranged on both sides of said main body.

9. A hand-held hair dryer according to claim 1 wherein said handle is connected to said fan unit at a location on said body.

10. A hand-held hair dryer according to claim 1 wherein a power cable for supplying power to the fan unit extends through the end of the handle.