CN216453804U - Hand-held electric hair drier - Google Patents

Abstract

The utility model discloses a handheld electric hair drier. The hand-held hair dryer comprises a handle and a main body, wherein the main body is provided with an inner pipe wall and an outer pipe wall so as to form a main through cavity and an outer through cavity. The main through cavity is positioned within the inner tube wall. An outer tubular wall extends around the inner tubular wall, and wherein the outer through cavity is positioned between the inner and outer tubular walls. The outer pipe wall is provided with an opening and communicated with the outer through cavity for sucking air into the main through cavity. The main cavity is provided with at least one rear suction inlet and a front discharge outlet. At least one motor and a fan enclosed in the main chamber, the fan being rotatable by the motor to generate an air flow. The body also comprises an internal diffuser arranged in the main through cavity at the front discharge and provided with a corresponding through cavity having a passage section decreasing towards the front discharge so as to increase the speed of the air flow. Fluid drawn by the rear intake enters the fan unit through the main cavity, and the rear intake includes at least two corners.

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 wet or dry conditions. 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. However, because the motor and the fan are arranged in the handle, the annular wall air duct is arranged at the joint of the handle and the air blowing tube and mainly used for blowing air through the coanda effect, on one hand, the energy utilization efficiency is not high, and on the other hand, the air outlet of the air blower is too hot due to the long-time use of the air blower, so that the use safety of the air blower is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model 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. Meanwhile, the handheld electric hair drier can provide high-heat jet air flow and reduce wind noise.

In order to solve the technical problem, the utility model adopts a technical scheme that a handheld electric hair drier is provided. The hand-held hair dryer includes a handle and a main body having an inner tubular wall and an outer tubular wall to form a main through cavity and an outer through cavity. The main lumen is positioned within the inner tube wall. The outer tube wall extends around the inner tube wall, and wherein the outer through cavity is positioned between the inner tube wall and the outer tube wall. The outer pipe wall is provided with an opening and communicated with the outer through cavity for sucking air into the main through cavity. The main cavity is provided with at least one rear suction inlet and a front discharge outlet. At least one motor and a fan enclosed in the main cavity, the fan being drivable in rotation by the motor to generate an air flow. The body also comprises an internal diffuser arranged in the main through cavity at the front discharge and provided with a corresponding through cavity having a passage section decreasing towards the front discharge so as to increase the speed of the air flow. Fluid drawn by the rear intake enters the fan unit through the main through cavity, and the rear intake includes at least two corners.

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 back suction inlet of the hand-held hair dryer of the utility model comprises at least two corners. The external cavity and the rear suction inlet are additionally provided with a way for supplementing air fluid, so that on one hand, the air supplementing speed is increased to reduce the negative pressure to realize air flow balance, and on the other hand, air flow disturbance is eliminated to reduce air noise. The fluid of the outer through cavity avoids potential safety hazards caused by overheating of the outer tube wall.

In a preferred embodiment, the two corners are approximately right angles.

In a preferred embodiment, the two corners are symmetrically disposed on the body.

In a preferred embodiment, the rear suction opening extends annularly around the outer tube wall.

Drawings

The utility model 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 schematic view of a fluid flow path of embodiment 1 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 utility model and should not be taken as limiting the utility model 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 utility model. 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 solution adopted by the present invention is to provide a hand-held hair dryer, as shown in fig. 1, comprising a handle 11 and a main body 10 having an inner tubular wall 101 and an outer tubular wall 102 to form a main through cavity 103 and an outer through cavity 104. The main through cavity 103 is positioned within the inner pipe wall 101. The outer tube wall 102 extends around the inner tube wall 101, and wherein the outer through cavity 104 is positioned between the inner tube wall 101 and the outer tube wall 102. The outer tube wall 102 is provided with an opening 1021 and communicates with the outer through cavity 104 for drawing air into the main through cavity 103. The main through cavity 103 is provided with an annular rear suction inlet 106 and a front discharge outlet 105. The main body 10 further comprises an electric motor 107 and a fan 108 enclosed in said main chamber 103, said fan 108 being driven in rotation by said electric motor 107 to generate an air flow. The body 10 also comprises an internal diffuser 109, which is arranged inside the main through cavity 103 at the front discharge and is provided with a corresponding through cavity having a passage section decreasing towards the front discharge so as to increase the speed of the air flow. Fluid drawn through the rear intake opening 106 enters the fan 108 through the main through cavity 103. The rear suction inlet 106 includes two corners 1061.

As shown in fig. 2 (the direction of the arrows indicate the direction of fluid flow), the rear suction inlet 106 extends annularly around the outer tube wall. The two corners 1061 are approximately right angles. The two corners 1061 are symmetrically disposed on the main body 10.

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 back suction inlet 106 of the hand held hair dryer of the present invention includes two corners 1061. The bypass cavity 104 and the rear intake port 106 add a way to supplement air fluid, on one hand, increase the speed of the make-up air to reduce the negative pressure to achieve air flow balance, and on the other hand, eliminate air flow disturbance to reduce air noise. The fluid in the outer lumen 104 avoids safety hazards due to overheating of the outer tube wall.

The hand-held type hairdryer of this embodiment, under the condition that reduces wind and make an uproar, can provide high pressure jet air current promote simultaneously to mend wind speed in order to reduce the negative pressure and in order to realize the air current balance to promote energy utilization efficiency. In addition, the handheld electric hair drier of the embodiment accelerates the heat dissipation efficiency under the condition of increasing the air outlet speed of the unit area.

Example 2

Only the differences between embodiment 2 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.

The rear suction port 106 is provided at the other end of the main body 10 opposite to the front discharge port 105.

While the utility model 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 utility model. 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 utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (4)

1. A hand-held hair dryer comprising:

a handle and a body having an inner tubular wall and an outer tubular wall to form a main through cavity and an outer through cavity; the main through cavity is positioned within the inner tube wall and the outer tube wall extends around the inner tube wall, and wherein the outer through cavity is positioned between the inner tube wall and the outer tube wall; the outer pipe wall is provided with an opening and communicated with the outer through cavity for sucking air into the main through cavity; the main through cavity is provided with at least one rear suction inlet and a front exhaust outlet;

at least one motor and a fan enclosed in the main through cavity, the fan being drivable in rotation by the motor to generate an air flow;

characterized in that said main body also comprises an internal diffuser arranged inside said main through cavity at said front discharge opening and provided with a corresponding through cavity having a passage section decreasing towards said front discharge opening so as to increase the speed of said air flow;

fluid drawn by the rear intake enters the fan unit through the main through cavity, and the rear intake includes at least two corners.

2. Hand-held hair dryer according to claim 1, characterized in that said two corners are approximately right angles.

3. Hand-held hair dryer according to claim 2, characterized in that said two corners are symmetrically arranged on said main body.

4. A hand-held hair dryer according to claim 2 wherein the rear suction opening extends annularly around the outer tube wall.

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