CN111441970A

CN111441970A - Hand-held bladeless fan

Info

Publication number: CN111441970A
Application number: CN202010258191.7A
Authority: CN
Inventors: 郭嘉鑫; 郭嘉怡; 郭斐; 李鲁
Original assignee: Dongguan Jiamushi Electronic Co ltd
Current assignee: Dongguan Jiamushi Electronic Co ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-07-24
Anticipated expiration: 2040-04-03
Also published as: CN111441970B

Abstract

The invention relates to a hand-held bladeless fan, which relates to the technical field of bladeless fans.A curved air channel is formed on the inner wall of an annular opening of a face shell in a bending way towards one side far away from an air outlet port, and a plurality of supercharging guide vanes are fixed on the inner wall of the annular opening and the outer annular wall of a motor support; the bottom shell is provided with a U-shaped flow guide curved surface which is of an annular structure, the annular structure is embedded in an annular opening at the upper end of the face shell, and an annular air outlet is formed between the outer annular wall of the annular structure and the inner wall of the annular opening at the upper end of the face shell; the supercharging guide vane and the curved air duct are arranged in the annular air outlet. The fan can expand and gather wind to the wind that gets into in the bladeless fan casing, improves wind speed, and has reduced the noise, conveniently carries the use.

Description

Hand-held bladeless fan

Technical Field

The invention relates to the technical field of bladeless fans, in particular to a handheld bladeless fan.

Background

The bladeless fan is popular with consumers because of the capability of generating natural and continuous cool wind, no peculiar blade shape and simple and beautiful appearance, and the bladeless fan is held by hands, wherein the handle is provided with the electric motor to suck air into the handle of the fan, and the air flow is accelerated through the unique air channel design in the handle and then blown out at high speed through the annular opening of the bladeless fan head. Compared with the traditional fan, the handheld bladeless fan is mainly added with an air outlet annular design, manufacturing and assembling links, and the cost is not obviously improved. The handheld bladeless fan blows 100% natural wind to a human body, a hot air conditioner is prone to getting ill in summer, the handheld bladeless fan is well protected for people with low body resistance, the handheld bladeless fan is small and exquisite in structure, light and easy to carry, the handheld bladeless fan is a necessary and good item for outdoor activities of home and travel in summer, the air volume regulating button is designed at the handle, and the humanized idealization can be achieved by regulating the air volume freely.

However, the conventional bladeless fan is too high in price, single in function, not convenient enough, and more prone to being used at home, is a main reason for lacking purchasing intention of users, and needs to be improved urgently.

Disclosure of Invention

The invention aims to provide a handheld bladeless fan with a reasonable design, aiming at overcoming the defects and shortcomings of the prior art, and the handheld bladeless fan can be used for diffusing and collecting wind entering a bladeless fan shell, improving the wind speed, reducing noise and being convenient to carry and use.

In order to achieve the purpose, the invention adopts the following technical scheme: the device comprises a key, a face shell, a circuit board, an internal air duct support, a bottom shell, a charging interface, a lithium battery, a driving motor, a motor support, an oblique flow supercharging impeller and a fan cover; the driving motor is inserted into the motor support, an output shaft of the driving motor penetrates through the motor support and then is connected with the oblique flow supercharging impeller, the motor support is detachably fixed on a lower port of the internal air duct support, the lithium battery is arranged in the internal air duct support, an inner air duct is formed in the annular wall of the internal air duct support, the lithium battery is electrically connected with the driving motor through a circuit system on a circuit board, the circuit board is embedded and fixed in the annular wall of the internal air duct support, the charging interface is electrically connected with the lithium battery through the circuit board, and the charging interface is clamped in the wall of the bottom shell; the bottom shell and the face shell are mutually buckled and fixed, and the whole body formed by the internal air duct support, the lithium battery, the driving motor, the motor support and the oblique flow supercharging impeller is embedded in a space at the position of the handle which is buckled into a whole body by the bottom shell and the face shell; the fan cover is clamped and fixed on a lower port of the handle position which is buckled into a whole by the bottom shell and the face shell, the indicating lamp and the button on the circuit board are both arranged in the shell wall of the face shell in a penetrating way, and the button is sleeved with the button; a curved air duct is formed on the inner wall of the annular opening of the face shell in a bending mode towards one side far away from the air outlet port, and a plurality of supercharging guide vanes are fixed on the inner wall of the annular opening and the outer ring wall of the motor support; the bottom shell is provided with a U-shaped flow guide curved surface which is of an annular structure, the annular structure is embedded in an annular opening at the upper end of the face shell, and an annular air outlet is formed between the outer annular wall of the annular structure and the inner wall of the annular opening at the upper end of the face shell; the supercharging guide vane and the curved air duct are arranged in the annular air outlet.

Furthermore, a decorative ring is embedded in a circular wall groove body of the annular air outlet of the face shell.

Further, the driving motor is a large-torque driving motor.

The working principle of the invention is as follows: the air flow is rapidly passed through the internal air channel bracket after being narrowed by the air channel in the internal air channel bracket, the pressure is amplified again, finally the air is gathered by the supercharging guide vane in the annular air outlet and is sprayed out at high speed after the resistance of the curved air channel is reduced, and a key is arranged on the circuit board to adjust the wind power, the charging interface is used repeatedly after the lithium battery is charged.

After adopting the structure, the invention has the beneficial effects that: the invention provides a handheld bladeless fan which can expand and gather wind entering a bladeless fan shell, improve wind speed, reduce noise and is convenient to carry and use.

Description of the drawings:

fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a sectional view taken along line a-a in fig. 1.

Fig. 3 is an exploded view of the present invention.

Fig. 4 is an assembly view of the present invention.

Fig. 5 is a schematic structural view of a motor bracket according to the present invention.

Fig. 6 is a schematic structural view of the diagonal flow supercharging impeller of the present invention.

FIG. 7 is a schematic view of the internal duct support of the present invention.

Fig. 8 is a schematic structural view of the wind shield according to the present invention.

Fig. 9 is a schematic structural view of the front cover of the present invention.

Fig. 10 is a schematic structural view of the bottom case of the present invention.

Description of reference numerals:

the device comprises a decoration ring 1, a key 2, a face shell 3, a curved air duct 3-1, a circuit board 4, an internal air duct support 5, an internal air duct 5-1, a bottom shell 6, a U-shaped flow guide curved surface 6-1, a charging interface 7, a lithium battery 8, a driving motor 9, a motor support 10, an oblique flow supercharging impeller 11, a fan cover 12 and a supercharging guide vane 13.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 10, the following technical solutions are adopted in the present embodiment: the device comprises a key 2, a face shell 3, a circuit board 4, an internal air duct support 5, a bottom shell 6, a charging interface 7, a lithium battery 8, a driving motor 9, a motor support 10, an oblique flow supercharging impeller 11 and a fan cover 12; the high-torque driving motor 9 is inserted in the motor bracket 10, after the output shaft of the driving motor 9 passes through the motor bracket 10, the output shaft is connected with the oblique flow supercharging impeller 11 (the oblique flow supercharging impeller 11 uses oblique flow supercharging blades through fluid simulation calculation, the wind pressure of the blades is large, and simultaneously the large-torque driving motor is matched to greatly increase the wind pressure, thereby overcoming the wind resistance and the friction force inside the air channel and leading the wind to be farther, the motor bracket 10 is clamped on the lower port of the internal air channel bracket 5 by utilizing hanging buckles and hanging holes, the lithium battery 8 is arranged in the internal air channel bracket 5, the 18650 type lithium battery 8 is electrically connected with the driving motor 9 through a circuit system on a circuit board 4, the circuit board 4 is embedded and fixed in the annular wall of the internal air channel bracket 5, the annular wall of the internal air channel bracket 5 is provided with an internal air channel 5-1, the internal air channel 5-1 is smaller than the inner side wall of the bottom, the ventilation area is reduced, the flow rate is increased), the Type c charging interface 7 is electrically connected with the lithium battery 8 through the circuit board 4, and the charging interface 7 is clamped in the wall of the bottom shell 6; the bottom shell 6 and the face shell 3 are mutually buckled and fixed, a decoration ring 1 is embedded in a ring wall groove body of an annular air outlet of the face shell 3, the whole body consisting of the internal air duct support 5, the lithium battery 8, the driving motor 9, the motor support 10 and the oblique flow supercharging impeller 11 is embedded in a space at the position of a handle which is buckled into a whole body by the bottom shell 6 and the face shell 3, and the internal air duct support 5 is clamped on the inner walls of the bottom shell 6 and the face shell 3; the fan housing 12 provided with the grids is clamped and fixed on the lower port of the handle position buckled into a whole by the bottom shell 6 and the face shell 3, the indicating lamp and the button on the circuit board 4 are both arranged in the shell wall of the face shell 3 in a penetrating way, and the button is sleeved with the key 2; a curved air duct 3-1 is formed on the inner wall of the annular opening of the face shell 3 by bending towards one side far away from the air outlet port, and a plurality of strip-shaped supercharging guide vanes 13 are uniformly formed on the inner wall of the annular opening and the outer annular wall of the motor support 10 in a integrated manner and are used for increasing the air flow speed of the outlet air; the bottom shell 6 is provided with a U-shaped flow guide curved surface 6-1, the U-shaped flow guide curved surface 6-1 is an annular structure which is an important component for increasing wind pressure and improving wind speed and is an air duct core, after airflow is introduced into one side by the unique hollow design of the U-shaped ring, the airflow is ejected at high speed by closing up and pressurizing an air outlet, the annular structure is embedded in an annular opening at the upper end of the face shell 3, and an annular air outlet is formed between the outer annular wall of the annular structure and the inner wall of the annular opening at the upper end of the face shell 3; the supercharging guide vane 13 and the curved air duct 3-1 are both arranged in the annular air outlet, and the U-shaped flow guide curved surface 6-1 is in an annular design, so that the area of the air outlet is reduced, the pressure of air flow flowing through the air duct is increased, and the air speed is increased.

The working principle of the specific embodiment is as follows: an integral internal space is formed by a bottom shell 6, a face shell 3, a wind cover 12, an internal air duct bracket 5 and a motor bracket 10, a cavity channel which is formed by an air inlet of the wind cover 12 to an air outlet of the face shell 3 and can be passed by air flow is an air duct, a driving motor 9 is powered by a lithium battery 8 through a circuit system so as to drive an oblique flow supercharging impeller 11 to rotate at high speed, the oblique flow supercharging impeller 11 rotating at high speed enables the air inlet of a handle position to form negative pressure, a large amount of air is sucked into the handle, flows through a supercharging guide vane 13 arranged on the motor bracket 10, the supercharged air flow rapidly passes through the internal air duct bracket 5, the air flow is narrowed by an air duct in the internal air duct bracket 5, the pressure is increased again, finally, the air is gathered through the supercharging guide vane 13 in an annular air outlet and the resistance is reduced through a curved surface 3-1, high-speed blowout is provided with button 2 on circuit board 4 for adjust the wind-force size, and the amount of wind size can be switched, and the interface 7 that charges can use green repeatedly for lithium cell 8 back of charging.

After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:

1. a driving motor, a motor bracket and an oblique flow supercharging impeller are arranged in a handle of the handheld bladeless fan, and the driving motor, the motor bracket and the oblique flow supercharging impeller are used for expanding and gathering wind entering a housing of the bladeless fan to improve wind speed;

2. the air inlet area is enlarged at the air inlet of the handle, so that although the rotating speed of the motor is reduced, the whole air quantity has no loss, but the noise is reduced;

3. the air outlet is designed to be annularly arranged to extrude air to be discharged, the air speed is higher, and the temperature can be quickly reduced to relieve summer heat;

4. through fluid simulation calculation on the diagonal flow supercharging impeller, the impeller is large in air pressure, but the load is also large, so that a driving motor with larger torque than the original driving motor is matched, the air pressure is greatly increased, and because the air pressure is greatly increased, the wind resistance and the friction force in the air channel can be overcome, and the air blowing is farther.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The handheld bladeless fan comprises a key (2), a face shell (3), a circuit board (4), an internal air duct support (5), a bottom shell (6), a charging interface (7), a lithium battery (8), a driving motor (9), a motor support (10), an oblique flow supercharging impeller (11) and a fan cover (12); the driving motor (9) is inserted into the motor support (10), an output shaft of the driving motor (9) penetrates through the motor support (10) and then is connected with the oblique flow supercharging impeller (11), the motor support (10) is detachably fixed on a lower port of the internal air duct support (5), the lithium battery (8) is arranged in the internal air duct support (5), an inner air duct (5-1) is formed in the annular wall of the internal air duct support (5), the lithium battery (8) is electrically connected with the driving motor (9) through a circuit system on the circuit board (4), the circuit board (4) is embedded and fixed in the annular wall of the internal air duct support (5), the charging interface (7) is electrically connected with the lithium battery (8) through the circuit board (4), and the charging interface (7) is clamped in the shell wall of the bottom shell (6); the bottom shell (6) and the face shell (3) are mutually buckled and fixed, and the whole consisting of the internal air duct support (5), the lithium battery (8), the driving motor (9), the motor support (10) and the oblique flow supercharging impeller (11) is embedded in a space at the position of a handle which is buckled into a whole by the bottom shell (6) and the face shell (3); the fan cover (12) is clamped and fixed on a lower port of a handle position which is buckled into a whole by the bottom shell (6) and the face shell (3), the indicating lamp and the button on the circuit board (4) are arranged in the shell wall of the face shell (3) in a penetrating way, and the button is sleeved with the key (2);

the method is characterized in that: a curved air duct (3-1) is formed on the inner wall of the annular opening of the face shell (3) in a bending mode towards one side far away from the air outlet port, and a plurality of supercharging guide vanes (13) are fixed on the inner wall of the annular opening and the outer ring wall of the motor support (10); the bottom shell (6) is provided with a U-shaped flow guide curved surface (6-1), the U-shaped flow guide curved surface (6-1) is of an annular structure, the annular structure is embedded in an annular opening at the upper end of the face shell (3), and an annular air outlet is formed between the outer annular wall of the annular structure and the inner wall of the annular opening at the upper end of the face shell (3); the supercharging guide vane (13) and the curved air duct (3-1) are arranged in the annular air outlet.

2. The hand-held bladeless fan according to claim 1, wherein: a decorative ring (1) is embedded in a ring wall groove body of the annular air outlet of the face shell (3).

3. The hand-held bladeless fan according to claim 1, wherein: the driving motor (9) is a large-torque driving motor.

4. The hand-held bladeless fan according to claim 1, wherein: the working principle is as follows: an integral internal space is formed by a bottom shell (6), a face shell (3), a fan cover (12), an internal air duct bracket (5) and a motor bracket (10), a cavity channel which is formed by an air inlet of the fan cover (12) to an air outlet of the face shell (3) and can be passed by air flow is an air duct, a driving motor (9) is powered by a lithium battery (8) through a circuit system so as to drive an oblique flow supercharging impeller (11) to rotate at a high speed, the oblique flow supercharging impeller (11) rotating at the high speed enables the air inlet at the position of a handle to form negative pressure, a large amount of air is sucked into the handle, flows through a supercharging guide vane (13) arranged on the motor bracket (10), the supercharged air flow rapidly passes through the internal air duct bracket (5), the pressure is increased again after the air flow is narrowed by an air duct in the internal air duct bracket (5), and finally the air is collected by the supercharging guide vane (13) in an annular air outlet, the wind power is sprayed out at a high speed after the resistance is reduced through the curved air duct (3-1), a key (2) is arranged on the circuit board (4) and used for adjusting the wind power, and the charging interface (7) is used for charging the lithium battery (8) and then is used repeatedly.