WO2023106717A1

WO2023106717A1 - Hair dryer

Info

Publication number: WO2023106717A1
Application number: PCT/KR2022/019012
Authority: WO
Inventors: 조황묵; 고동건; 김진백; 서응렬
Original assignee: 삼성전자주식회사
Priority date: 2021-12-07
Filing date: 2022-11-29
Publication date: 2023-06-15
Also published as: KR20230085734A; US20230263285A1

Abstract

The hair dryer comprises: a cylindrical body; a handle provided below the body; a main fan motor disposed inside the handle; and a sub fan motor disposed inside the body. The body includes: a first flow path extending in the longitudinal direction of the body in the center region of the body; and a second flow path extending outside the first flow path in the longitudinal direction of the body. Air flowing in from the outside by means of the main fan motor flows along the second flow path, and air flowing in from the outside by means of the sub fan motor flows along the first flow path.

Description

hair dryer

The present disclosure relates to a hair dryer.

In general, hair dryers are formed to heat external air sucked in by a fan motor with a heater and discharge it.

Such a hair dryer can be used for styling hair, such as drying wet hair or giving hair waves.

Accordingly, conventional hair dryers on the market can be largely classified into hair dryers for drying hair and hair dryers for styling hair.

A hair dryer for drying hair can also be used for styling the hair, but there is a problem in that the styling efficiency is not good.

In addition, a hair dryer for hair styling can also be used to dry wet hair, but there is a problem in that the efficiency of drying the hair is not good.

Thus, users have a two-purpose hair dryer: a hair dryer for drying hair and a hair dryer for styling hair.

A hair dryer according to an aspect of the present disclosure includes a body formed in a cylindrical shape; a handle installed on the lower part of the body; a main fan motor that generates a main airflow with air introduced from the outside of the hair dryer and is disposed inside the handle; and a sub-fan motor disposed inside the body to generate a sub-airflow with air introduced from the outside of the hair dryer. The body may include: a first flow path extending along a longitudinal direction of the body in a central region of the body; and a second flow path extending outside the first flow path along the longitudinal direction of the body, wherein the main air current flows along the second flow path and the sub air flow flows along the first flow path. .

In this case, at one end of the body, an outlet of the first flow path may be provided at a center, and an exit of the second flow path having an annular shape surrounding the exit of the first flow path may be provided.

Also, the sub fan motor may be disposed at the other end of the body.

In addition, the hair dryer may further include a heater disposed along the second flow path.

The hair dryer may further include a printed circuit board disposed inside the handle and supplying power to the main fan motor, the sub fan motor, and the heater.

In addition, the hair dryer may further include a printed circuit board disposed inside the body and supplying power to the heater.

A hair dryer according to another aspect of the present disclosure includes a body formed in a cylindrical shape; a handle connected to the body at a substantially right angle; a main fan motor that generates a main airflow with air introduced from the outside of the hair dryer and is disposed inside the handle; and a sub-fan motor disposed inside the body to generate a sub-airflow with air introduced from the outside of the hair dryer. The body may include: a first flow path extending along a longitudinal direction of the body in a central region of the body; and a second flow path extending outside the first flow path along the longitudinal direction of the body, wherein the main air flow flows along the first flow path and the sub air flow flows along the second flow path.

In addition, the hair dryer may further include a heater disposed along the first flow path.

A hair dryer according to another aspect of the present disclosure includes a body formed in a cylindrical shape; a handle connected to the body at a substantially right angle; a main fan motor disposed inside the handle; and a sub-fan motor disposed inside the body. The body may include: a first flow path extending along a longitudinal direction of the body in a central region of the body; and a second flow path extending outside the first flow path along the longitudinal direction of the body, and a heater disposed along the second flow path.

In addition, a main airflow generated by air introduced from the outside by the main fan motor flows along the second flow path, and a sub airflow generated by air introduced from the outside by the sub fan motor flows along the first flow path. can flow

The above and other aspects, features, and advantages of the embodiments of the present disclosure will become more apparent from the following description with reference to the accompanying drawings. In the accompanying drawings: FIG. 1 shows a hair dryer according to an embodiment of the present disclosure;

Figure 2 is a cross-sectional view showing a hair dryer according to an embodiment of the present disclosure;

3 is a functional block diagram of a hair dryer according to an embodiment of the present disclosure;

Fig. 4 shows an outlet of the hair dryer of Fig. 2;

5 is a cross-sectional view of the body of the hair dryer of FIG. 2 taken along line I-I;

6 is a cross-sectional view showing a state in which the main fan motor of the hair dryer of FIG. 2 operates;

7 is a cross-sectional view showing a state in which the sub-fan motor of the hair dryer of FIG. 2 operates;

8 is a cross-sectional view showing a state in which both the main fan motor and the sub fan motor of the hair dryer of FIG. 2 are operated;

9 is a cross-sectional view showing a state in which accessories are mounted on the hair dryer of FIG. 2;

10 is a cross-sectional view showing a hair dryer according to another embodiment of the present disclosure;

Fig. 11 is a view showing an outlet of the hair dryer of Fig. 10;

12 is a cross-sectional view of the body of the hair dryer of FIG. 10 taken along line II-II;

13 is a cross-sectional view showing a state in which the main fan motor of the hair dryer of FIG. 10 operates;

14 is a cross-sectional view showing a state in which the sub-fan motor of the hair dryer of FIG. 10 operates;

15 is a cross-sectional view showing a state in which both the main fan motor and the sub fan motor of the hair dryer of FIG. 10 are operated;

16 is a cross-sectional view showing a state in which accessories are mounted on the hair dryer of FIG. 10;

17 is a graph showing characteristics of a main fan motor and a sub fan motor used in a hair dryer according to an embodiment of the present disclosure;

18 is a graph illustrating a case in which accessories are attached to a flow path through which air currents generated by a main fan motor and a sub fan motor respectively used in a hair dryer according to an embodiment of the present disclosure flow.

The following description with reference to the accompanying drawings is provided to provide a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and equivalents thereof. It contains various specific details for illustrative purposes, but these should be regarded as illustrative only. Accordingly, those skilled in the art will recognize that various changes and modifications may be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and configurations may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are not to be limited in their bibliographic meaning, but are used only by the inventors to enable a clear and consistent understanding of the present disclosure. Accordingly, the following description of various embodiments of the present disclosure is provided for purposes of illustration only and is not intended to limit the present disclosure as defined by the appended claims and equivalents thereof, as is common practice in the art. It is clear to those who have knowledge.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms may only be used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present disclosure.

Terms used in the embodiments of the present disclosure may be interpreted as meanings commonly known to those skilled in the art unless otherwise defined.

In addition, terms such as 'front end', 'rear end', 'upper end', 'lower end', 'upper end', and 'lower end' used in the present disclosure are defined based on drawings, and by these terms, the shape and The location is not limited. The present disclosure was devised in view of the above problems, and an object of the present disclosure is to provide a hair dryer capable of efficiently drying wet hair and styling hair.

According to the hair dryer according to an embodiment of the present disclosure having the structure as described above, when styling hair, high-pressure and high-flow airflow generated by the main fan motor and accessories can be used, so that hair styling can be effectively performed. can do. In addition, when drying hair, since a sub-fan motor that generates airflow with a higher flow rate than the main fan motor can be used, hair can be dried effectively.

Therefore, the hair dryer according to an embodiment of the present disclosure can effectively both dry hair and style hair.

Hereinafter, a hair dryer according to an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

1 is a view showing a hair dryer according to an embodiment of the present disclosure. 2 is a cross-sectional view showing a hair dryer according to an embodiment of the present disclosure. 3 is a functional block diagram of a hair dryer according to an embodiment of the present disclosure. 4 is a view showing an outlet of the hair dryer of FIG. 2; 5 is a cross-sectional view of the body of the hair dryer of FIG. 2 taken along the line I-I.

1 to 3, a hair dryer 1 according to an embodiment of the present disclosure may include a body 10 and a handle 20.

The body 10 is formed in a substantially cylindrical shape, and a first flow path 12 and a second flow path 11 through which air flow passes in the longitudinal direction of the body 10 may be provided inside.

The first flow path 12 extends along the longitudinal direction of the body 10 in the center area of the body 10, and the second flow path 11 extends outside the first flow path 12 in the longitudinal direction of the body 10. can be extended along Accordingly, the first flow path 12 may be referred to as a central flow path of the body 10, and the second flow path 11 may be referred to as a peripheral flow path.

One end of the body 10, that is, the front end of the body 10, has an outlet of the first flow path (hereinafter referred to as a first flow path outlet) 12a and a second flow path 11 through which the airflow passing through the first flow path 12 is discharged. ) An outlet (hereinafter, referred to as a second passage outlet) 11a of a second flow path through which the airflow passing through is discharged may be provided. That is, the first flow path outlet 12a is provided at the center of one end of the body 10, and the annular second flow path outlet 11a surrounds the first flow path outlet 12a around the first flow path outlet 12a. ) can be provided.

At the other end of the body 10 opposite to one end of the body 10 provided with the first flow path outlet 12a and the second flow path outlet 11a, that is, at the rear end of the body 10, outside air flows into the body 10. A rear inlet 14 may be provided.

The rear inlet 14 may be formed in various shapes as long as outside air can be introduced into the body 10 . For example, the rear inlet 14 may be formed of a plurality of through holes formed on the rear surface of the body 10 .

A rear filter 15 may be installed at the rear end of the body 10 to filter outside air flowing into the rear inlet 14 . A rear filter 15 may be installed on the body 10 adjacent to the rear inlet 14 .

A sub-fan motor 30 generating a high flow of air may be installed inside the body 10 . The sub fan motor 30 may be installed adjacent to the rear inlet 14 at the rear end of the body 10 . In other words, the sub fan motor 30 may be installed inside the body 10 opposite to the first flow path outlet 12a and the second flow path outlet 11a.

The handle 20 is installed on the lower part of the body 10 and is formed so that the user can hold the hair dryer 1 by hand. The handle 20 may be connected to the body 10 at a substantially right angle.

A main fan motor 40 generating high-pressure and high-speed airflow may be installed inside the handle 20 .

A lower inlet 24 through which external air is introduced into the handle 20 may be provided at the lower end of the handle 20 . The lower inlet 24 may be formed in various shapes as long as outside air can flow into the inside of the handle 20 . For example, the lower inlet 24 may be formed of a plurality of through-holes formed on the outer circumferential surface of the lower portion of the handle 20 .

A lower filter 25 capable of filtering external air flowing into the lower inlet 24 may be installed on the handle 20 . The lower filter 25 may be installed inside the handle 20 adjacent to the lower inlet 24 .

The second flow path 11 is formed inside the body 10 and may include a second flow path outlet 11a provided at the front end of the body 10 . The second flow passage 11 is formed in the longitudinal direction of the body 10 . The main fan motor 40 is connected to the second flow path 11 so that the air current generated by the main fan motor 40 flows through the second flow path 11 .

The main fan motor 40 may be connected to a lower portion of the second flow passage 11 formed inside the body 10 . To this end, a connection passage 21 connecting the main fan motor 40 and the second passage 11 may be provided above the handle 20 . Accordingly, the air current generated by the main fan motor 40 may move to the second passage outlet 11a through the connection passage 21 and the second passage 11 .

The first flow path 12 is formed inside the second flow path 11 and may include a first flow path outlet 12a provided at the front end of the body 10 . As shown in FIG. 4 , the first flow path outlet 12a may be provided at the center of the second flow path outlet 11a. Accordingly, the second flow path outlet 11a has an annular shape, and the first flow path outlet 12a has a circular shape located inside the second flow path outlet 11a. The first flow path outlet 12a and the second flow path outlet 11a may be disposed concentrically.

The first flow path 12 is formed in a hollow cylindrical shape and may be installed at the center of the second flow path 11 . Therefore, as shown in FIGS. 2 and 5 , the second flow path 11 is formed in a cylindrical shape having an annular cross section, and the first flow path 12 may be located at the center of the second flow path 11 .

The sub fan motor 30 is installed at the rear end of the body 10 and may be connected to the first flow path 12 formed inside the second flow path 11 . The sub fan motor 30 may be installed behind the handle 20 based on the front end of the body 10 .

The sub fan motor 30 is formed to form a high-flow air flow and may be connected to the rear end of the first flow path 12 . Accordingly, the air current generated by the sub fan motor 30 may be discharged to the first flow path outlet 12a through the first flow path 12 .

The first flow path 12 and the second flow path 11 may be formed by an internal duct 50 installed inside the body 10 .

Referring to FIG. 2 , the internal duct 50 is installed inside the body 10 and may be formed in a hollow cylindrical shape having a smaller diameter than the inside diameter of the body 10 . Both ends of the inner duct 50 are open.

One end of the inner duct 50 is installed to be positioned on the same plane as the front end of the body 10 .

The other end of the inner duct 50 may be formed adjacent to the sub fan motor 30 and fixed to the inner circumferential surface of the body 10 . To this end, the other end of the inner duct 50 may include a connection portion 51 connected to the inner circumferential surface of the body 10 .

For example, the connection portion 51 of the inner duct 50 may be formed in a shape that spreads from the other end of the inner duct 50 toward the inner circumferential surface of the body 10 . In other words, the connecting portion 51 of the inner duct 50 may be formed in a funnel shape. One end of the connection part 51 of the inner duct 50 is in contact with the inner circumferential surface of the body 10, and the body 10 prevents air from passing between the connection part 51 of the body 10 and the inner duct 50. installed

The second passage 11 is formed as a space between the inner circumferential surface of the body 10 and the outer circumferential surface of the inner duct 50 . The second flow path 11 has one end open and the other end blocked. One end of the second flow path 11 forms a second flow path outlet 11a provided at the front end of the body 10 . The other end of the second flow path 11 is blocked by the connection part 51 of the inner duct 50.

The first flow passage 12 is formed as an inner space of the inner duct 50 . Accordingly, both ends of the first flow path 12 are open. One end of the first flow path 12 forms a first flow path outlet 12a provided at the front end of the body 10 . The other end of the first flow path 12 communicates with the sub fan motor 30 . In other words, the other end of the first flow path 12 is connected to the rear space of the body 10 in which the sub fan motor 30 is installed. Therefore, when the sub-fan motor 30 operates, the airflow generated by the sub-fan motor 30 passes through the first flow path 12 and is discharged to the outside through the first flow path outlet 12a.

The connection passage 21 connecting the second passage 11 and the main fan motor 40 may be formed by a connection duct 60 installed inside the handle 20 .

The connection duct 60 may be provided on the upper part of the handle 20 installed on the lower part of the body 10. The connection duct 60 is provided inside the handle 20 and may be formed to connect the second flow path 11 and the main fan motor 40 . That is, the connection duct 60 may be formed to guide the airflow generated by the main fan motor 40 to the second flow path 11 .

The lower end of the connection duct 60 is connected to the main fan motor 40, and the upper end of the connection duct 60 is connected to the lower part of the body 10. An opening 17 to which an upper end of the connection duct 60 is connected may be provided on the lower surface of the body 10 . The opening 17 of the body 10 communicates with the second flow passage 11 . Accordingly, the air current generated by the main fan motor 40 may move to the second flow path 11 through the connection duct 60 and the opening 17 .

As described above, since the first flow path 12 and the second flow path 11 are partitioned by the internal duct 50, the air flow passing through the first flow path 12 and the second flow path 11 Air currents do not interfere with each other.

A heater 70 may be installed in the second flow path 11 . The heater 70 is formed to heat the airflow passing through the second flow path 11 . The heater 70 may be installed in the second flow path 11 adjacent to the second flow path outlet 11a. The heater 70 is formed to allow air flow to pass through. The air flow may pass through the heater 70 and be discharged to the outside through the second passage outlet 11a.

In other words, the heater 70 may be installed in the space between the body 10 and the inner duct 50. The heater 70 may be installed on the outer circumferential surface of the inner duct 50 so as to be adjacent to the second passage outlet 11a.

The main fan motor 40 may be configured to generate high-pressure and high-velocity airflow. The main fan motor 40 may be configured to generate an airflow with higher pressure and higher velocity than the sub fan motor 30 .

The main fan motor 40 may include a main fan and a main motor rotating the main fan. The main fan has a small diameter, and the main motor is formed to rotate at a high rpm. Therefore, the main fan motor 40 has a small diameter and can rotate at a high rotational speed.

For example, the diameter of the main fan may be 20 mm to 35 mm, and the number of revolutions of the main motor may be 100,000 rpm to 150,000 rpm.

The sub fan motor 30 may be configured to generate a high flow of air. The sub fan motor 30 may be configured to generate a higher flow of air than the main fan motor 40 .

The sub fan motor 30 may include a sub fan and a sub motor rotating the sub fan. The sub fan has a larger diameter than the main fan, and the sub motor is formed to rotate at a low rotational speed. That is, the sub-motor is formed to rotate at a lower rotational speed than the rotational speed of the main motor. Therefore, the sub fan motor 30 has a large diameter and can rotate at a low rotational speed.

For example, the diameter of the sub fan may be 40 mm to 100 mm, and the rotation speed of the sub motor may be 10,000 rpm to 50,000 rpm.

Since the main fan motor 40 has a small diameter, it can be installed inside the handle 20 . Since the sub fan motor 30 has a larger diameter than the main fan motor 40 , it cannot be installed on the handle 20 but can be installed inside the body 10 .

In addition, the hair dryer 1 may include a printed circuit board 80 formed to supply power to the main fan motor 40 , the sub fan motor 30 , and the heater 70 . In addition, the printed circuit board 80 may be formed to control the main fan motor 40 , the sub fan motor 30 , and the heater 70 .

The printed circuit board 80 may be installed on at least one of the body 10 and the handle 20 .

Here, the printed circuit board 80 includes various electronic components and boards constituting an electronic circuit capable of supplying and controlling power to the main fan motor 40, the sub fan motor 30, and the heater 70. refers to a printed circuit board assembly that

In the case of the present embodiment shown in FIG. 2, the printed circuit board 80 may include a body printed circuit board 81 installed on the body 10 and a handle printed circuit board 82 installed on the handle 20. .

The body printed circuit board 81 may be installed at a rear end of the second flow path 11 close to the sub fan motor 30 . In other words, the body printed circuit board 81 may be installed in the space between the body 10 and the inner duct 50. The body printed circuit board 81 may be installed adjacent to the connection part 51 of the inner duct 50.

The body printed circuit board 81 may be installed at a predetermined distance from the heater 70 . When the body printed circuit board 81 is separated from the heater 70 by a predetermined distance, the effect of heat of the heater 70 on the body printed circuit board 81 can be minimized.

The body printed circuit board 81 may be installed so as not to interfere with the flow of air generated by the main fan motor 40 into the second flow path 11 . For example, the body printed circuit board 81 may be installed outside the opening 17 of the body 10 communicating the second passage 11 and the connection passage 21 .

Since the second flow path 11 has an annular cross section, the body printed circuit board 81 installed on the second flow path 11 is formed in an annular shape corresponding to the second flow path 11 .

As an example, the body printed circuit board 81 may be formed to supply power to the sub fan motor 30 and the heater 70 and to control the sub fan motor 30 and the heater 70 .

The handle printed circuit board 82 may be installed inside the handle 20 . The handle printed circuit board 82 may be installed in the inner space of the handle 20 so as not to interfere with the main fan motor 40 . As an example, the handle printed circuit board 82 may be formed to control the main fan motor 40 .

The handle printed circuit board 82 may be electrically connected to the main fan motor switch 83, the sub fan motor switch 84, and the heater switch 85 installed on the handle 20. Alternatively, the main fan motor switch 83 , the sub fan motor switch 84 , and the heater switch 85 may be installed on the handle printed circuit board 82 .

The main fan motor switch 83 is formed to turn on/off the main fan motor 40 . In addition, the main fan motor switch 83 may be configured to control the speed of the main fan motor 40 to adjust the strength of the air flow discharged from the second passage outlet 11a.

The sub fan motor switch 84 is formed to turn on/off the sub fan motor 30 . In addition, the sub-fan motor switch 84 may be configured to control the speed of the sub-fan motor 30 to adjust the strength of the air flow discharged from the first passage outlet 12a.

The heater switch 85 is formed to turn on/off the heater 70 . In addition, the heater switch 85 may be formed to control heat generated by the heater 70 .

Hereinafter, the operation of the hair dryer 1 according to an embodiment of the present disclosure will be described in detail with reference to FIGS. 6 to 8 .

The main fan motor 40 and the sub fan motor 30 provided in the hair dryer 1 according to an embodiment of the present disclosure may operate individually, and the two

motors

30 and 40 may operate simultaneously. can

6 is a view showing a state in which the main fan motor of the hair dryer of FIG. 2 operates. At this time, the sub fan motor 30 is in a non-operating state.

When the main fan motor 40 is operated using the main fan motor switch 83, air flow is generated by the main fan motor 40. Specifically, when the main fan motor 40 rotates, outside air flows into the inside of the handle 20 through the lower inlet 24, and the introduced outside air flows into high-pressure and high-speed airflow by the main fan motor 40. (hereinafter referred to as the main airflow).

Referring to FIG. 6 , the main airflow moves to the second flow path 11 through the connection flow path 21 . The main airflow that has moved to the second flow path 11 is discharged to the outside of the body 10 through the second flow path outlet 11a. In other words, when the main fan motor 40 operates, a high-pressure and high-velocity airflow is discharged from the second passage outlet 11a provided at the front end of the body 10 . At this time, air flow is not discharged from the first flow path outlet 12a provided inside the second flow path outlet 11a.

Then, the user can style hair using the high-pressure and high-velocity airflow discharged from the second passage outlet 11a.

7 is a cross-sectional view showing a state in which the sub-fan motor of the hair dryer of FIG. 2 operates. At this time, the main fan motor 40 is not operating.

When the sub-fan motor 30 is operated using the sub-fan motor switch 84, airflow is generated by the sub-fan motor 30. Specifically, when the sub-fan motor 30 rotates, external air is introduced into the body 10 through the rear inlet 14, and the introduced external air flows into a high-flow air flow ( hereinafter referred to as a sub-airflow).

Referring to FIG. 7 , the sub airflow generated by the sub fan motor 30 moves to the first flow path outlet 12a through the first flow path 12 and is discharged to the outside through the first flow path outlet 12a. do. In other words, when the sub fan motor 30 operates, a high-flow airflow is discharged from the first passage outlet 12a provided at the front end of the body 10 . At this time, air flow is not discharged from the second passage outlet 11a provided outside the first passage outlet 12a.

Then, the user can dry his/her hair using the high flow of air discharged from the first passage outlet 12a.

Compared to the main airflow, the sub-airflow has a lower pressure and flow rate and a higher flow rate, so it is effective in drying wet hair. Conversely, the main airflow has higher pressure and flow rate than the subairflow, and the flow rate is small, so it is effective for styling hair, but not effective for drying wet hair.

8 is a cross-sectional view illustrating a state in which both the main fan motor and the sub fan motor of the hair dryer of FIG. 2 are operated.

Referring to FIG. 8 , the high-pressure and high-velocity main airflow generated by the main fan motor 40 passes through the connection passage 21 and the second passage 11, and then passes through the second passage outlet 11a to the outside. is discharged

In addition, the high-flow sub-airflow generated by the sub-fan motor 30 passes through the first flow path 12 and then is discharged to the outside through the first flow path outlet 12a.

In other words, when both the main fan motor 40 and the sub fan motor 30 operate, airflow is discharged from both the second flow path outlet 11a and the first flow path outlet 12a provided at the front end of the body 10. . At this time, a high-pressure and high-velocity main airflow is discharged from the second passage outlet 11a, and a high-flow sub-airflow is discharged from the first passage outlet 12a.

In this way, when both the main fan motor 40 and the sub fan motor 30 operate, a larger amount of airflow is discharged from the front end of the body 10 than when only the sub fan motor 30 operates, so wet hair can be dried more efficiently.

An accessory 100 for styling hair may be mounted on the front end of the body 10 of the hair dryer 1 according to an embodiment of the present disclosure.

Referring to FIG. 9 , the accessory 100 for hair styling may be detachably mounted on the front end of the body 10 . The accessory 100 is formed to style hair using the airflow discharged from the second passage outlet 11a. Since a high-pressure and high-velocity airflow is discharged from the second passage outlet 11a, hair styling can be effectively performed using the accessory 100.

At this time, the accessory 100 may be formed so that the airflow discharged from the first flow path outlet 12a does not pass. Therefore, even when the sub fan motor 30 operates, the high flow of air passing through the first flow path 12 is not discharged through the accessory 100 .

Hereinafter, a hair dryer 1 according to another embodiment of the present disclosure will be described in detail with reference to FIGS. 10 to 12 .

10 is a cross-sectional view showing a hair dryer according to another embodiment of the present disclosure. 11 is a view showing an outlet of the hair dryer of FIG. 10; 12 is a cross-sectional view of the body of the hair dryer of FIG. 10 taken along line II-II.

10 to 12, a hair dryer 1 according to an embodiment of the present disclosure may include a body 10 and a handle 20.

One end of the body 10, that is, the front end of the body 10, has an outlet of the first flow path (hereinafter referred to as a first flow path outlet) 12a and a second flow path 11 through which the airflow passing through the first flow path 12 is discharged. ) An outlet (hereinafter, referred to as a second passage outlet) 11a of a second passage through which airflow passing through is discharged may be provided. That is, the first flow path outlet 12a is provided at the center of one end of the body 10, and the annular second flow path outlet 11a surrounds the first flow path outlet 12a around the first flow path outlet 12a. ) can be provided.

At the rear end of the body 10 opposite to the front end of the body 10 provided with the first flow path outlet 12a and the second flow path outlet 11a, a rear inlet 14 through which external air flows into the body 10 is provided. can be provided.

The handle 20 is installed on the lower part of the body 10 and is formed so that the user can hold the hair dryer 1 with one hand. The handle 20 may be connected to the body 10 at a substantially right angle.

A lower filter 25 capable of filtering external air flowing into the lower inlet 24 may be installed on the handle 20 . A lower filter 25 may be installed on the handle 20 adjacent to the lower inlet 24 .

The second flow path 11 is formed inside the body 10 and may include a second flow path outlet 11a provided at the front end of the body 10 . The second flow passage 11 is formed in the longitudinal direction of the body 10 . The sub fan motor 30 is connected to the second flow path 11 so that the air current generated by the sub fan motor 30 flows through the second flow path 11 .

The sub fan motor 30 is installed at the rear end of the body 10 and may be connected to the second flow path 11 . The sub fan motor 30 is formed to form a high-flow airflow and may be connected to the rear end of the second flow path 11 . Accordingly, the air current generated by the sub fan motor 30 may be discharged to the second flow path outlet 11a through the second flow path 11 .

The first flow path 12 is formed inside the second flow path 11 and may include a first flow path outlet 12a provided at the front end of the body 10 . As shown in FIG. 11 , the first flow path outlet 12a may be provided at the center of the second flow path outlet 11a. Accordingly, the second flow path outlet 11a has an annular shape, and the first flow path outlet 12a has a circular shape located inside the second flow path outlet 11a. The first flow path outlet 12a and the second flow path outlet 11a may be disposed concentrically.

The first flow path 12 is formed in a hollow cylindrical shape and may be installed at the center of the second flow path 11 . Therefore, as shown in FIGS. 10 and 12 , the second flow path 11 is formed in a cylindrical shape having an annular cross section, and the first flow path 12 may be located at the center of the second flow path 11 .

The main fan motor 40 may be connected to a lower portion of the first flow path 12 formed inside the body 10 . To this end, a connection passage 21 connecting the main fan motor 40 and the first passage 12 may be provided above the handle 20 . Accordingly, the air current generated by the main fan motor 40 may be discharged to the first flow path outlet 12a through the connection flow path 21 and the first flow path 12 .

Referring to FIGS. 10 and 12 , the internal duct 50 is installed inside the body 10 and may be formed in a hollow cylindrical shape having a smaller diameter than the inner diameter of the body 10 . One end of the inner duct 50 is open, and the other end is closed.

The other end of the inner duct 50 is installed adjacent to the sub-fan motor 30 and is blocked so that air current generated by the sub-fan motor 30 does not flow into the inner duct 50 .

The second passage 11 is formed as a space between the inner circumferential surface of the body 10 and the outer circumferential surface of the inner duct 50 . Both ends of the second flow path 11 are open. One end of the second flow path 11 forms a second flow path outlet 11a provided at the front end of the body 10 . The other end of the second flow path 11 communicates with the sub fan motor 30 . In other words, the other end of the second flow passage 11 is connected to the rear space of the body 10 in which the sub fan motor 30 is installed. Therefore, when the sub-fan motor 30 operates, the airflow generated by the sub-fan motor 30 passes through the second flow path 11 and is discharged to the outside through the second flow path outlet 11a.

The first flow passage 12 is formed as an inner space of the inner duct 50 . Thus, one end of the first flow path 12 is open, and the other end is blocked. One end of the first flow path 12 forms a first flow path outlet 12a provided at the front end of the body 10 .

The connection passage 21 connecting the first passage 12 and the main fan motor 40 may be formed by a connection duct 60 installed inside the handle 20 .

The connection duct 60 may be provided on the upper part of the handle 20 installed on the lower part of the body 10. The connection duct 60 is provided inside the handle 20 and may pass through the lower surface of the body 10 to connect the first flow path 12 and the main fan motor 40 .

That is, the connection duct 60 may be formed to guide the air current generated by the main fan motor 40 to the first flow path 12 . Accordingly, the connection duct 60 is connected to the internal duct 50 across the lower portion of the second flow path 11 .

The lower end of the connection duct 60 is connected to the main fan motor 40, and the upper end of the connection duct 60 is connected to the lower part of the inner duct 50. An opening 57 to which an upper end of the connection duct 60 is connected may be provided on a lower surface of the inner duct 50 . The opening 57 of the inner duct 50 communicates with the first flow path 12 . Accordingly, the air current generated by the main fan motor 40 may move to the first flow path 12 through the connection duct 60 and the opening 57 .

In addition, the airflow generated by the sub fan motor 30 and passing through the lower part of the second flow path 11 moves along the outer surface of the connection duct 60 and can be discharged to the outside through the second flow path outlet 11a. .

A heater 70 may be installed in the first flow path 12 . The heater 70 is formed to heat the airflow passing through the first flow path 12 . The heater 70 may be installed in the first flow path 12 adjacent to the first flow path outlet 12a. The heater 70 is formed to allow air flow to pass through.

In other words, the heater 70 may be installed in the inner space of the inner duct 50 . The heater 70 may be installed inside the inner duct 50 so as to be adjacent to the first passage outlet 12a.

The sub fan motor 30 may be configured to generate a high flow of air. The sub fan motor 30 may be configured to generate an air flow having a higher flow rate than the main fan motor 40 .

In the case of the present embodiment shown in FIG. 10, the printed circuit board 80 may include a body printed circuit board 81 installed on the body 10 and a handle printed circuit board 82 installed on the handle 20. .

The body printed circuit board 81 may be installed at a rear end of the first flow path 12 close to the sub fan motor 30 . In other words, the body printed circuit board 81 may be installed inside the inner duct 50. The body printed circuit board 81 may be installed adjacent to the rear end of the inner duct 50 .

The body printed circuit board 81 may be installed so as not to interfere with the flow of air generated by the main fan motor 40 into the first flow path 12 . For example, the body printed circuit board 81 may be installed outside the opening 57 of the internal duct 50 communicating the first passage 12 and the connection passage 21 .

Since the body printed circuit board 81 is installed in the first passage 12 having a circular cross section, the body printed circuit board 81 may be formed in a disk shape corresponding to the first passage 12 .

For example, the body printed circuit board 81 may be formed to supply and control power to the sub fan motor 30 and the heater 70 .

The handle printed circuit board 82 may be installed inside the handle 20 . The handle printed circuit board 82 may be installed in the inner space of the handle 20 so as not to interfere with the main fan motor 40 .

For example, the handle printed circuit board 82 may be formed to supply power to and control the main fan motor 40 .

The main fan motor switch 83 is formed to turn on/off the main fan motor 40 . In addition, the main fan motor switch 83 may be configured to control the speed of the main fan motor 40 to adjust the strength of the air flow discharged from the first passage outlet 12a.

The sub fan motor switch 84 is formed to turn on/off the sub fan motor 30 . In addition, the sub-fan motor switch 84 may be configured to control the speed of the sub-fan motor 30 to adjust the strength of airflow discharged from the second passage outlet 11a.

Hereinafter, the operation of the hair dryer 1 according to an embodiment of the present disclosure will be described in detail with reference to FIGS. 13 to 15 .

motors

30 and 40 may operate simultaneously. can

13 is a view showing a state in which the main fan motor of the hair dryer of FIG. 10 operates. At this time, the sub fan motor 30 is in a non-operating state.

When the main fan motor 40 is operated using the main fan motor switch 83, air flow is generated by the main fan motor 40. Specifically, when the main fan motor 40 rotates, outside air flows into the inside of the handle 20 through the lower inlet 24, and the introduced outside air flows into high-pressure and high-speed airflow by the main fan motor 40. (Hereinafter referred to as the main air flow).

Referring to FIG. 13 , the main airflow moves to the first flow path 12 through the connection flow path 21 . The main airflow that has moved to the first flow path 12 is discharged to the outside of the body 10 through the first flow path outlet 12a. That is, when the main fan motor 40 operates, a high-pressure and high-velocity airflow is discharged from the first passage outlet 12a at the front end of the body 10 . At this time, air flow is not discharged from the second passage outlet 11a provided outside the first passage outlet 12a.

Then, the user can style the hair using the high-pressure and high-velocity airflow discharged from the first passage outlet 12a.

14 is a view showing a state in which the sub-fan motor of the hair dryer of FIG. 10 operates. At this time, the main fan motor 40 is not operating.

Referring to FIG. 14 , the sub airflow generated by the sub fan motor 30 moves to the second flow path outlet 11a through the second flow path 11 and is discharged to the outside through the second flow path outlet 11a. do. In other words, when the sub fan motor 30 operates, a high-flow airflow is discharged from the second passage outlet 11a provided at the front end of the body 10 . At this time, air flow is not discharged from the first passage outlet 12a provided inside the second passage outlet 11a.

Then, the user can dry his hair by using the high flow of air discharged from the second passage outlet 11a.

15 is a view showing a state in which both the main fan motor and the sub fan motor of the hair dryer of FIG. 10 are operated.

Referring to FIG. 15 , the high-pressure and high-velocity main airflow generated by the main fan motor 40 passes through the connection passage 21 and the first passage 12, and then passes through the first passage outlet 12a to the outside. is discharged

In addition, the high-flow sub-airflow generated by the sub-fan motor 30 passes through the second flow path 11 and then is discharged to the outside through the second flow path outlet 11a.

That is, when both the main fan motor 40 and the sub fan motor 30 operate, airflow is discharged from both the first flow path outlet 12a and the second flow path outlet 11a provided at the front end of the body 10 . At this time, a high-pressure and high-velocity main airflow is discharged from the first passage outlet 12a, and a high-flow sub-airflow is discharged from the second passage outlet 11a.

Referring to FIG. 16 , the accessory 100 for hair styling may be detachably mounted on the front end of the body 10 . The accessory 100 is formed to style hair using the airflow discharged from the first passage outlet 12a. Since a high-pressure and high-velocity airflow is discharged from the first passage outlet 12a, hair styling can be effectively performed using the accessory 100.

At this time, the accessory 100 may be formed with a diameter smaller than that of the second passage outlet 11a so that the airflow discharged from the second passage outlet 11a does not pass. Therefore, even when the sub fan motor 30 operates, the high-flow airflow passing through the first flow path 11 is not discharged through the accessory 100 .

Hereinafter, the reason for connecting the accessory 100 for hair styling to the passage through which the high-pressure and high-velocity air current generated by the main fan motor 40 flows will be described with reference to FIGS. 17 and 18 .

17 is a graph showing characteristics of a main fan motor and a sub fan motor used in a hair dryer according to an embodiment of the present disclosure. For reference, FIG. 17 shows a relationship between a static pressure and a flow rate of the air flow when the air flow generated by each of the main fan motor 40 and the sub fan motor 30 flows through the flow path.

In FIG. 17, the vertical axis represents static pressure, and the horizontal axis represents flow rate. Curve A represents the characteristics of the sub fan motor 30, and curve B represents the characteristics of the main fan motor 40.

Referring to FIG. 17, since the sub-fan motor 30 has characteristics of a large diameter and low rotational speed, as shown in curve A, when the change in flow rate according to the change in static pressure is large and the flow rate is large, the sub-fan motor 30 ) is higher than the static pressure of the main fan motor 40. Therefore, when the cross-sectional area of the discharge port of the passage through which the air current generated by the sub fan motor 30 flows is narrowed in order to realize a high air flow rate, the flow rate rapidly decreases due to resistance.

Since the main fan motor 40 has characteristics of a small diameter and high rotational speed, as shown in curve B, when the change in flow rate according to the change in static pressure is small and the flow rate is large, the static pressure of the sub fan motor 30 is higher than that of the main fan. The static pressure of the motor 40 is low. Therefore, even if the cross-sectional area of the discharge port of the passage through which the air flow generated by the main fan motor 40 passes is narrowed in order to realize a high flow rate of the air flow, the flow rate is not significantly reduced due to resistance.

18 is a graph illustrating a decrease in flow rate when accessories are attached to a flow path through which air currents generated by a main fan motor and a sub fan motor used in a hair dryer according to an embodiment of the present disclosure flow.

In FIG. 18, the vertical axis represents static pressure, and the horizontal axis represents flow rate. Curve A represents the characteristics of the sub fan motor 30, and curve B represents the characteristics of the main fan motor 40. Curve R1 represents the resistance of the flow path when an accessory with low resistance is installed in the flow path. Curve R2 represents the resistance of the flow path when an accessory with high resistance is installed in the flow path.

Referring to FIG. 18, when an accessory with low resistance is installed in the flow path, as can be seen from the curve R1, the static pressure P1' of the airflow generated by the main fan motor 40 is low, and the flow rate is low. (Q1') is also small. In addition, as can be seen from the curve R1, in the case of the air flow generated by the sub fan motor 30, both the static pressure P1 and the flow rate Q1 are equal to the static pressure P1' of the air flow of the main fan motor 40. It is greater than the flow rate (Q1'). Therefore, it can be seen that the sub fan motor 30 is advantageous when the flow rate is large.

However, when an accessory with high resistance is installed in the flow path, as can be seen from the curve R2, in the case of the air flow generated by the main fan motor 40, the static pressure P2' is high and the flow rate Q2' is less Also, as can be seen from the curve R2, in the case of the air flow generated by the sub fan motor 30, the static pressure P2 is high but the flow rate Q2 is small.

Therefore, in the case of the main fan motor 40, the flow rate decrease (ΔQ'=Q1'-Q2') is smaller and the static pressure rise (P2'-P1') is greater in the case of the accessory with higher resistance than the accessory with low resistance. . In the case of the sub fan motor 30, the flow rate reduction (ΔQ=Q1-Q2) is greater and the static pressure rise (P2-P1) is greater in an accessory with a higher resistance than an accessory with a low resistance.

Meanwhile, high-pressure and high-flow airflow is required for hair styling, and high-flow airflow is required for hair drying.

Therefore, since the accessory 100 for hair styling has a large resistance, the accessory 100 for styling is generated by the main fan motor 40 and is installed in a passage through which an air flow with a small change in flow rate and a high pressure rise flows. It is good to do.

However, for hair drying, it is preferable to use the airflow generated by the sub-fan motor 30 having a higher flow rate and higher static pressure than the airflow generated by the main fan motor 40 .

In particular, when the main fan motor 40 generating high-pressure and high-velocity airflow is simultaneously operated together with the sub-fan motor 30 generating high-flow airflow, such as in the hair dryer 1 according to an embodiment of the present disclosure, , hair can be dried more effectively.

In addition, since the heater 70 and the body printed circuit board 81 act as resistance to the air flow, the heater 70 and the body printed circuit board 81 also flow through the air flow generated by the main fan motor 40. It is recommended to install on

According to the hair dryer according to an embodiment of the present disclosure having the above structure, when using an accessory for hair styling, high pressure and high velocity airflow generated by the main fan motor can be used, so that hair styling can be done effectively.

In addition, since the hair dryer according to an embodiment of the present disclosure can use a sub-fan motor that generates airflow with a higher flow rate than the main fan motor when drying hair, it is possible to effectively dry hair.

In addition, the hair dryer according to an embodiment of the present disclosure can simultaneously use high-pressure and high-speed airflow generated by the main fan motor and high-flow airflow generated by the sub-fan motor, so that hair can be dried more effectively. can

Although the present disclosure has been shown and described with reference to various embodiments above, it is to be understood that various changes may be made in form and detail without departing from the spirit and scope of the present disclosure as defined by the appended claims and equivalents thereof. It will be understood by those skilled in the art.

Claims

a body formed in a cylindrical shape;

a handle installed on the lower part of the body;

a main fan motor that generates a main airflow with air introduced from the outside of the hair dryer and is disposed inside the handle; and

A sub-fan motor that generates a sub-airflow with air introduced from the outside of the hair dryer and is disposed inside the body;

the body,

a first flow path extending along a longitudinal direction of the body in a central region of the body; and

A second flow path extending along the longitudinal direction of the body outside the first flow path; includes,

The hair dryer, wherein the main airflow flows along the second flow path and the sub airflow flows along the first flow path.
According to claim 1,

At one end of the body, the outlet of the first flow path is provided in the center, and the outlet of the annular second flow path surrounding the outlet of the first flow path is provided.
According to claim 2,

The sub-fan motor is disposed at the other end of the body, the hair dryer.
According to claim 3,

A heater disposed along the second flow path; further comprising a hair dryer.
According to claim 4,

A printed circuit board disposed inside the handle and configured to supply power to the main fan motor, the sub fan motor, and the heater; further comprising a hair dryer.
According to claim 4,

Disposed inside the body, a printed circuit board for supplying power to the heater; further comprising a hair dryer.
a body formed in a cylindrical shape;

a handle connected to the body at a substantially right angle;

a main fan motor that generates a main airflow with air introduced from the outside of the hair dryer and is disposed inside the handle; and

A sub-fan motor that generates a sub-airflow with air introduced from the outside of the hair dryer and is disposed inside the body;

the body,

a first flow path extending along a longitudinal direction of the body in a central region of the body; and

And a second flow path extending along the longitudinal direction of the body outside the first flow path,

The hair dryer, wherein the main airflow flows along the first flow path and the sub airflow flows along the second flow path.
According to claim 7,

At one end of the body, an outlet of the first flow path is provided in the center, and an outlet of the second flow path of an annular shape surrounding the outlet of the first flow path is provided.
According to claim 8,

A heater disposed along the first flow path; further comprising a hair dryer.
According to claim 9,

A printed circuit board disposed inside the handle and configured to supply power to the main fan motor, the sub fan motor, and the heater; further comprising a hair dryer.
According to claim 9,

Disposed inside the body, a printed circuit board for supplying power to the heater; further comprising a hair dryer.
a body formed in a cylindrical shape;

a handle connected to the body at a substantially right angle;

a main fan motor disposed inside the handle; and

Including; a sub-fan motor disposed inside the body,

the body,

a first flow path extending along a longitudinal direction of the body in a central region of the body; and

And a second flow path extending along the longitudinal direction of the body outside the first flow path,

Including, a hair dryer; a heater disposed along the second flow path.
According to claim 12,

At one end of the body, an outlet of the first flow path is provided in the center, and an outlet of the second flow path of an annular shape surrounding the outlet of the first flow path is provided.
According to claim 13,

A main airflow generated by air introduced from the outside by the main fan motor flows along the second flow path, and a sub airflow generated by air introduced from the outside by the sub fan motor flows along the first flow path. hair dryer.
15. The method of claim 14,

A printed circuit board disposed inside the handle and configured to supply power to the main fan motor, the sub fan motor, and the heater; further comprising a hair dryer.