KR101538292B1

KR101538292B1 - Low noise hair dryer

Info

Publication number: KR101538292B1
Application number: KR1020150061209A
Authority: KR
Inventors: 이영희
Original assignee: 이영희
Priority date: 2015-04-30
Filing date: 2015-04-30
Publication date: 2015-07-20

Abstract

The low-noise hair dryer is formed with an attracting hole penetrating the inside of the barrel so that the outside air is drawn from the rear to the nozzle and the nozzle is ejected forward from the nozzle. By disposing the heating element and the air flow means in the inner space of the nozzle sealed with the outside, the noise generated by the rapid air flow and the motor is reduced in the inner space, and the noise emitted to the outside of the nozzle is reduced. The air flowing into the inner space of the nozzle and the air discharged through the inlet port flow at a high speed from the rear to the front so that the Bernoulli effect formed at the inlet and the outlet is increased and as a result, To provide a hair dryer in which the air flow rate is amplified and the noise is reduced.

Description

{Low noise hair dryer}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low noise hair dryer which reduces noise generated when a hair dryer is used, Specifically, by disposing the heating element and the air flow means inside the nozzle having the internal space formed therein, the noise generated by the rapid air flow and the motor is reduced in the space inside the nozzle sealed with the external, thereby reducing noise emitted to the outside of the nozzle. In addition, since the ejection port is disposed on the inner surface of the nozzle having the attraction port and the inlet port is disposed on the outer surface thereof to enlarge the Bernoulli effect, the amount of air attracted to the outer surface of the inlet port and the nozzle increases, .

Hair dryers are often used in homes and hairdressers by blowing warm wind on wet hair and drying in a short time. In order to shorten the drying time of the hair, the hair dryer should be able to discharge a sufficient amount of air to some extent. To increase the air volume, the capacity (W) of the motor for rotating the blowing fan should be increased. In this case, the power consumption increases as the motor capacity W increases.

On the other hand, the noise of the hair dryer is caused by the air moving fast by the blowing fan to rub against the inner wall and accessories of the hair dryer main body.

Hair dryers The biggest problem users feel is the stress they receive from the noise that comes from using the hair dryers. In order to solve the noise problem, reducing the air volume of the hair dryer reduces the noise level. In this case, the drying time becomes longer. Therefore, there is a need to devise a new method of reducing noise without reducing the air volume of the hair dryer.

A variety of ideas have been proposed, such as using a soundproof material capable of absorbing noise or covering the motor with a housing, which is a main cause of noise generation, in conventional hair dryers, but it was not enough to be an effective noise reduction measure. The reason for this is that the components constituting the hair dryer are disposed on the air stream through which the wind is blown, so that the conventional noise prevention measures can not be achieved. Therefore, in order to solve the noise problem of the conventional hand dryer, it is preferred to change the conventional structure in which the components are disposed on the air stream from which the wind is blown.

The present invention reduces the noise produced by the rapid air flow and the motor in the inner space of the nozzle by disposing the heating element and the air flow means inside the nozzle having the inner space formed therein, and then discharging the wind to the outside of the nozzle to reduce noise. The inner space of the nozzle is sealed so that it can not be seen by the user of the hair dryer, so that the noise generated during the hair dryer operation can be sufficiently reduced in the sealed inner space.

According to another aspect of the present invention, there is provided an air conditioner, comprising: an inlet formed on a front outer surface of a nozzle; a suction port for sucking air in the vicinity of the inlet port forward; Each based on the fact that the Bernoulli effect is generated in which the outside air is attracted. Therefore, it is effective to increase the air volume without increasing the load of the motor by amplifying the outside air that is attracted by the fast air flow passing through the inlet and outlet of the nozzle and discharging the air toward the front of the hair dryer. As a result, Can be reduced.

Registered patent: 10-1229109 (Hair dryer). Registered patent: 10-1458567 (air volume expanding low noise hair dryer). Registered Patent: 10-1468674 (Hot Air Device with Low Noise Ventilation Module). Registration Practice: 20-0367465 (Quiet hair dryer). U.S. Patent No. 5,875,562 (Hand-held hair dryer with vibration and noise control). US Published Patent: US2013 / 0269200 A1 (Hand held appliance)

An object of the present invention is to reduce the noise generated by a conventional hair dryer. By disposing a heating element and an air flow means inside a nozzle having an inner space formed therein, And noise emitted to the outside of the nozzle is reduced.

It is another object of the present invention to provide an air blower which is capable of increasing the Bernoulli effect by disposing a discharge port on the inner surface of the nozzle having the attracting mouth and arranging an air inlet on the outer surface thereof to increase the air attracted to the outer surface of the attracting mouth and the nozzle, And to provide an amplified hair dryer.

According to an aspect of the present invention, there is provided a hair dryer comprising: a nozzle having a generally tubular shape and having an inlet port passing through the inside of the barrel so that the rear air is drawn in and discharged forward; A handle attached to the nozzle; An air flow means located inside the nozzle and generating an air flow; An inlet passage through which the air introduced from the outside by the air flow means flows into the air flow means, into a space formed on the inner front side of the nozzle; An inlet formed in an annular shape on a front outer surface of the nozzle for introducing outside air into the inlet passage; A discharge passage through which air discharged from the air flow means flows into a space formed on the inner rear side of the nozzle; A discharge port formed annularly on a rear inner surface of the nozzle to discharge the air in the discharge passage to the outside; A barrier wall that blocks air flow between the inflow passage and the discharge passage, the barrier wall being provided in the inner space of the nozzle; And a heat generating element installed inside the discharge passage and selectively supplying heat to the air to be flowed.

The hair dryer lifts the Bernoulli effect formed in the inlet and the outlet, respectively, so that the air flowing into the inlet passage and the air discharged from the outlet passage move forward from the rear to amplify the outside air attracted toward the front of the nozzle.

The air flow between the inflow passage and the discharge passage is only possible by the air flow means passing through the barrier wall.

It is preferable that an interval between openings of the discharge port is between 2 mm and 8 mm and an interval between openings of the inlet is 1.1 to 3.0 times larger than an interval between openings of the discharge port.

A filtering network is installed in the inflow passage to filter foreign matter contained in the outside air.

The inner wall of the nozzle is formed of a material surrounded by a sound absorbing material or having a sound absorbing effect.

The air flow means includes a blowing fan case; A blowing fan disposed in the blowing fan case; And a motor for driving the blowing fan.

The low noise hair dryer according to the present invention has the following effects.

First, by disposing the heating element and the air flow means inside the nozzle having the inner space formed therein, the noise generated by the rapid air flow and the motor is reduced in the closed inner space of the nozzle, so that the noise emitted to the outside of the nozzle is reduced.

Secondly, the air flowing into the inflow passage and the air discharged from the discharge passage are allowed to flow from the rear to the front, so that the Bernoulli effect formed near the inlet and the outlet is increased, thereby increasing the amount of outside air attracted.

Third, since the attracted outside air is amplified and discharged toward the front of the hair dryer, the effect of increasing the air volume without increasing the load of the motor can be reduced, and as a result, the noise generated by the motor can be reduced.

1 is a side cross-sectional view showing the overall configuration of a hair dryer 10;
2 is a cross-sectional view of FIG.

Other features and actions of the present invention will be described in detail with reference to the following examples.

FIG. 1 is a side sectional view showing the overall structure of a hair dryer 10 according to an embodiment, and FIG. 2 is a sectional view cut along 2 - 2 of FIG. According to the drawings, the nozzle 20 has a tubular shape in which at least a part is circular, an outer surface is an inner surface, an inner surface is an inner surface, and an inner space is formed between the outer surface and the inner surface. The nozzle (20) is formed in an annular tube shape having a generally elliptical cross section and has an inlet port (50) passing through the inside of the cylinder so that outside air is drawn from the rear and discharged forward. In other words, the inner wall corresponds to a surface surrounding the inlet port 50.

In the inner space of the nozzle 20, an air flow means 60 for introducing the outside air into the nozzle 20 and discharging the outside air to the outside of the nozzle 20 is provided. The inner space is composed of an inflow passage 30, a discharge passage 40 and a blocking wall 25. The shapes of the inflow passage 30 and the discharge passage 40 are related to the shape of the nozzle 20.

The inflow passage 40 is a space formed in an annular shape on the inner front side of the nozzle 20, and is a passage through which air introduced from the outside flows into the air flow means 60. An inlet 35 is formed in the front outer surface of the nozzle 20 to guide the outside air into the inlet passage 30. The inlet port 35 is formed around a part of the outer surface of the nozzle 20, and its cross-sectional shape is generally annular.

The discharge passage 40 is a passage through which the air discharged from the air flow means 60 flows into a space formed at least partly in an annular shape on the inner rear side of the nozzle 20. A discharge port (45) for discharging the air in the discharge passage (40) to the outside is formed on the inner rear surface of the nozzle (20) toward the inside of the inlet port (80). The discharge port 45 is formed around a part of the rear side of the surface on which the inlet port 50 is formed, and its cross-sectional shape is generally annular.

A blocking wall 25 is provided between the inflow passages 30 and the discharge passages 40, that is, at an intermediate portion of the inner space of the nozzle 20. The blocking wall 25 may extend around the portion of the air flow means 60 located in the inner space so that the air flow between the inlet path 40 and the discharge path 50 is blocked by the air flow means (60). The inlet of the air flow means 60 passing through the blocking wall 25 is connected to the inlet passage 30 so as to be capable of air flow and the outlet is connected to the discharge passage 40 so as to be capable of air flow.

A heating element 80 is also provided in the discharge passage 40. The heating element 80 generates heat by being supplied with power, thereby raising the temperature of the air passing through the discharge passage 40.

The air flow means 60 is composed of a blowing fan case 61, a blowing fan 62 provided in the blowing fan case to form an air flow for generating suction force, and a motor 63 for driving the blowing fan 62 . The blowing fan case 61 serves as a guide for introducing the air in the inlet passage 30 to move along the outer peripheral surface of the rotating blowing fan 62 (F2) and to discharge the air to the discharge passage 40. [

External air is introduced into the inflow passage 30 through the inflow port 35 by the motor 63 being driven and the blowing fan 62 being rotated. The inlet 35 has a slot shape in which a part of the outer surface of the nozzle 20 is spaced apart and formed in an overlapping manner, and the outer surface has a generally nose-like surface. When external air flows into the inlet port 35 by the rotational force of the air blowing fan 62, the flow of air moving along the inside surface of the nose is accelerated. As a result, the pressure in the vicinity of the inlet port 35 is lowered, (G1), and the Bernoulli effect moving toward the front occurs.

The discharge port 45 has a slot shape in which a part of the surface making the attracting mouth 50 is spaced apart and formed to overlap. A part of the surface of the entrance port 50 forming the slot has a curved surface. When the air in the discharge passage 40 is discharged (F3) to the discharge port 45 by the rotational force of the blowing fan 62, the air flow moving along the curved surface of the inside is accelerated, The attracting air flow G2 is formed in which the pressure is lowered and the outside air moves forward through the inlet port 50. [

Particularly, in order to increase the Bernoulli effect formed in the inlet port 35 and the outlet port 45 and to amplify the outer surface of the nozzle 20 and the outside air attracted to the inlet port 50, And the air discharged from the discharge passage (50) move forward from the rear.

It is preferable that the spaced width of the discharge port 45 is between 2 mm and 8 mm. And may include a plurality of spacers (not shown) between the intervals to maintain a uniform spacing of the discharge ports 45.

A filtering net 32 is installed in the inflow passage 30 to filter foreign matter contained in the outside air introduced from the inflow opening 35. The filter 32 is not only detachable to the inlet passage 30 but also can be reused after eliminating foreign matter that is filtered, so that there is no burden of maintenance cost. The interval between the openings of the inlet 35 is 1.1 to 3.0 times larger than the interval between the openings of the outlet 45 so that the air flow F3 exiting the outlet 45 flows into the inlet 35 Flow velocity is faster than air flow (F1).

The wall of the inner space of the nozzle 20 is preferably surrounded by a sound absorbing material (not shown) or formed of a material having a sound absorbing effect.

A handle 70 is attached to the nozzle 20 and a controller 75 is provided on one side of the handle 70 to control the application of power to the heating element 80 and the operation of the motor 63. The user can operate the controller 75 to select or control the operation of the hair dryer 10, the intensity of the airflow, hot air or cold air.

The use process of the hair dryer 10 according to the present invention having such a configuration will be described with reference to Figs. 1 and 2. Fig. When the power is connected to the motor 63 and the blowing fan 62 rotates, an air flow occurs. The air on the outer surface of the nozzle 20 moves forward along the nose surface due to the pressure difference created by the air flow and flows into the inlet 35 at a high flow rate F1. When the air is rapidly introduced, the pressure near the outer surface of the nozzle 20 is lowered, and the attracting air G1 is drawn which moves toward the front due to the external air around the nozzle 20 being drawn.

The air introduced into the inlet 35 moves along the inlet passage 30, and the foreign matter is filtered by the filter 32. The air sucked at the inlet of the air flow means 60 passing through the blocking wall 25 is discharged to the outlet side (F2), and the discharged air is heated by the heating element 80 provided in the discharge passage 40. [ The heated air is discharged (F3) through the discharge port 45 at a high flow rate forward. When the air is rapidly discharged, the pressure of the inlet port 50 is lowered, and external air is drawn from the rear of the nozzle 20, and an attracting air current G2 that moves toward the front is generated. The flow F3 and the draft air G2 discharged from the discharge port 45 are mixed while passing through the inlet port 50 and discharged to the front of the nozzle 20 (G3). As a result, the attracting air currents G1 and G2, which are several times larger than the airflow F3 that the air blowing fan 62 discharges through the air outlet 45, move forward, and the total blowing amount of the hair dryer 10 increases.

The scope of the present invention is not limited to the above-described embodiments, and various changes and modifications may be made by those skilled in the art. Accordingly, the invention is limited only by the following claims.

10: Hair dryer 20: Nozzle
25: blocking wall 30: inlet passage
32: Filter 35: Inlet
40: Discharge passage 45: Discharge port
50: inlet port 60: air flow means
61: blower fan case 62: blower fan
63: motor 70: handle
75: controller 80: heating element
F1: a flow of external air that moves along the outer surface of the nozzle 20 and flows into the inlet port 35;
F2: a flow of air that moves along the outer circumferential surface of the rotating blowing fan 62 and is discharged to the discharge passage 40;
F3: the flow of the air in the discharge passage (40) through the discharge port (45) and discharged to the inlet port (50).
G1: a flow of an attracting air current which is attracted along the outer surface of the nozzle 20 and moved forward by the Bernoulli effect generated near the inlet 35;
G2: the flow of the attracting air current which is attracted to the inlet port 50 and moves toward the front side due to the Bernoulli effect generated near the outlet port 45;
G3: a flow in which the flow F3 discharged from the discharge port 45 and the attracting airflow G2 are mixed while passing through the inlet port 50 and discharged to the front of the nozzle 20;

Claims

A nozzle having a generally tubular shape and having an inlet port passing through the inside of the cylinder back and forth so that outside air behind the cylinder is drawn and discharged forward;
A handle attached to the nozzle;
An air flow means located inside the nozzle and generating an air flow;
An inlet passage through which the air introduced from the outside by the air flow means flows into the air flow means, into a space formed on the inner front side of the nozzle;
An inlet formed in an annular shape on a front outer surface of the nozzle for introducing outside air into the inlet passage;
A discharge passage through which air discharged from the air flow means flows into a space formed on the inner rear side of the nozzle;
A discharge port formed annularly on a rear inner surface of the nozzle to discharge the air in the discharge passage to the outside;
A wall interrupting an air flow between the inflow passage and the discharge passage, the partition wall being provided inside the nozzle; And
And a heating element installed in the inner space of the discharge passage and selectively supplying heat to the air to be flowed.

2. The hair dryer according to claim 1, wherein the air flowing into the inflow passage and the air discharged from the discharge passage move forward from the rear side.

The hair dryer according to claim 1, wherein air flow between the inflow passage and the discharge passage is made possible only by the air flow means passing through the blocking wall.

The hair dryer according to claim 1, wherein an interval between openings of the discharge port is between 2 mm and 8 mm.

The hair dryer as set forth in claim 1, wherein an interval between openings of the inlet is 1.1 to 3.0 times larger than an interval between openings of the outlet.

The hair dryer as set forth in claim 1, further comprising a filter installed in the inflow passage for filtering foreign matter contained in the outside air.

The hair dryer according to claim 1, wherein the inner wall of the nozzle is formed of a material that is surrounded by a sound absorbing material or has a sound absorbing effect.

The air conditioner according to claim 1, wherein the air flow means comprises: a blowing fan case; A blowing fan disposed in the blowing fan case; And a motor for driving the blowing fan.