CN209761856U

CN209761856U - Bladeless fan

Info

Publication number: CN209761856U
Application number: CN201920378485.6U
Authority: CN
Inventors: 孔万喜
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-23
Filing date: 2019-03-23
Publication date: 2019-12-10
Anticipated expiration: 2029-03-23

Abstract

The utility model discloses a bladeless fan, including the last fan base that is used for the air-out and with the lower fan base of last fan base block, be provided with the air intake down on the fan base, be provided with wind power generation device down in the fan base, last fan base and lower fan base interconnect, it includes shell body and interior casing to go up the fan base, interior casing and the mutual joint of shell body, be provided with the cavity that can supply the air to pass through between shell body and the interior casing, and form the air outlet in the inside wall department of shell body, the air outlet is by interior and outside the receipts, and the air outlet cross-sectional area reduces. The utility model discloses following beneficial effect has: the bladeless fan can greatly improve wind power under the condition of the same battery output power, and meets the requirements of people.

Description

bladeless fan

Technical Field

The utility model relates to a fan, in particular to bladeless fan.

Background

The bladeless fan is also called an air doubling machine, can generate natural and continuous cold wind, and cannot cover dust or hurt fingers inserted by children due to no blades. More wonderful is that the appearance is streamline and fresh.

The bladeless fan is characterized in that an electric motor is arranged in a base of the bladeless fan, 33 liters of air can be sucked into the fan base every second, after the air is accelerated by a cyclone accelerator, the air circulation speed is increased, the air is surrounded by an annular inner lip of a fan head of the bladeless fan, the surrounding force drives the air near the fan head to enter the fan head along with the air, and the air is blown out at a high speed.

The existing bladeless fan is limited by the output power of a battery arranged inside, even though the existing bladeless fan drives outside air to increase the air circulation speed, the wind power of the existing bladeless fan is still weak, and the requirement of people on the portable bladeless fan cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bladeless fan. The bladeless fan can greatly improve wind power under the condition of the same battery output power, and meets the requirements of people.

The invention aims to be realized by the following technical scheme:

the utility model provides a bladeless fan, is including the lower fan base that is used for the last fan base of air-out and is used for installing power accessories such as driving motor, be provided with wind power generation device in the fan base down, last fan base and lower fan base interconnect, characterized by: go up the fan base and include shell body and interior casing, interior casing and the mutual joint of shell body, be provided with the cavity that can supply the air to pass through between shell body and the interior casing, and locate to form the air outlet at the inside wall of shell body, the air outlet is by interior and outer the tightening up, and the air outlet cross-sectional area reduces.

After the technical scheme is adopted, the air outlet can be formed between the outer shell and the inner shell, the wind power generation device in the lower fan base enables air to flow to generate wind power, and the wind power flows through the cavity between the outer shell and the inner shell and finally reaches the position of the air outlet. Because the air outlet is the bore that the cross-sectional area reduces gradually, the volume that the air flow was crossed in the unit interval equals, consequently, air flow rate increases to make the wind-force of air outlet crescent, reach the effect that improves wind-force. When the wind power of the air outlet is increased, the formed air negative pressure is increased, and the pressure intensity of the area where the air flows is reduced, so that the external air is driven under the action of the pressure intensity difference, and the wind power is further improved. The utility model discloses a scheme can increase the wind-force of air outlet to make the pressure difference increase, the outside air is driven, makes wind-force increase, simultaneously because the cross-sectional area of air outlet reduces, makes the wind-force that originally blew off bigger. Under above-mentioned dual amplification, bladeless fan compare in general bladeless fan, under the condition of same output, its wind-force is bigger.

The utility model discloses further set up to: the outer shell is provided with a guide surface for guiding wind power.

After the technical scheme is adopted, the guide surface can converge scattered wind, so that the blowing direction of the wind is integrated in one direction, the wind power in a certain direction is enhanced, and the wind power gathering effect is achieved.

the utility model discloses further set up to: the guiding direction of the guiding surface is towards the central position of the outer shell and the inner shell.

By adopting the technical scheme, the guide surface guides the wind blown out by the wind power generation device to the center gradually, and can guide the external air to flow into the bladeless fan in a wider range, thereby further improving the wind power.

The utility model discloses further set up to: the cross-sectional area of the inner shell is increased from the air outlet position along the wind moving direction until the cross-sectional area of the inner shell of a plane where the intersection point position of the wind guiding directions of the guide surfaces is located is the maximum cross-sectional area.

After the technical scheme is adopted, the wind guiding direction is towards the center positions of the outer shell and the inner shell, so that an intersection point exists in a straight line drawn out from the wind guiding direction finally, and when the cross section area of the inner shell of a plane where the intersection point is located is the maximum cross section area, the wind power convergence effect is optimal. The reason is as follows: the air moves along the moving direction from the air outlet, and simultaneously drives the outside air to circulate and enter the inner shell, so that the volume of the air existing in the inner shell is increased, the blown wind power is gradually increased, after the wind blown from the wind power generation device reaches the intersection point position, the subsequent continuous increase of the cross section area can not play a role in air convergence, and the wind power can be dispersed, therefore, the cross section area is the maximum cross section area, which is favorable for the wind power convergence, and the bladeless fan has the maximum wind power.

The utility model discloses further set up to: the wind power generation device comprises a driving fan blade, the driving fan blade is connected with a driving motor, the driving motor is connected with a power supply, and the bottom of the power supply is connected with a switch device.

After the technical scheme is adopted, the power supply is started through the switching device, and the power supply drives the driving motor to operate. The driving motor drives the driving fan blades to rotate, so that wind power is generated in the lower fan base, external air enters the lower fan base along the air inlet, and then the external air moves to the upper fan base to achieve wind power amplification.

the utility model discloses further set up to: the switch device comprises a touch switch, a charging port is arranged near the touch switch, and the charging port is an android or apple charging port.

by adopting the technical scheme, the touch switch can effectively prevent the situation that the bladeless fan is turned on by misoperation due to extrusion when the bladeless fan is put into a backpack or a satchel. In addition, the touch switch is arranged at the bottom and cannot be sensed by common metal objects, so that the touch switch cannot be turned on by the metal objects in the backpack or the satchel, such as keys. The touch switch arranged at the bottom makes the articles in the bag less likely to be contacted by other articles, so that the possibility of misoperation is reduced. Simultaneously, with touch switch and its relevant circuit board setting in the bottom, compare in prior art with the switch setting at the lateral wall position of fan base down, the utility model discloses practice thrift the space more, the reason lies in: when general push type switch setting was located at the lateral wall position, its circuit board setting was vertical placing generally, and the utility model discloses a circuit board is horizontal placing, has consequently practiced thrift the space to reduced the holistic volume of no leaf fan, makeed to carry more convenient.

To sum up, the utility model discloses following beneficial effect has: the bladeless fan can greatly improve wind power under the condition of the same battery output power, and meets the requirements of people.

drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic structural view of the inner housing;

FIG. 3 is a top view of example 1;

3 FIG. 3 4 3 is 3 a 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 33 3; 3

FIG. 5 is a schematic view of the junction between a bevel and a flat surface;

FIG. 6 is a schematic view of the structure of the wind power generation apparatus;

FIG. 7 is a schematic view of the structure of FIG. 6 in another orientation;

FIG. 8 is a schematic structural view of example 2;

FIG. 9 is a top view of embodiment 2;

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 9;

FIG. 11 is a schematic structural view of example 3;

FIG. 12 is a top view of example 3;

FIG. 13 is a cross-sectional view C-C of FIG. 12;

FIG. 14 is a schematic structural view of example 4;

FIG. 15 is a top view of embodiment 4;

Fig. 16 is a cross-sectional view taken along line D-D in fig. 15.

Reference numerals: 1. an upper fan base; 11. an outer housing; 12. an inner housing; 13. a cavity; 14. an air outlet; 15. a guide surface; 16. a bevel; 17. a plane; 2. a lower fan base; 3. an air inlet; 4. a wind power generation device; 41. a base; 42. a touch switch; 43. a charging port; 44. a battery holder; 45. a power source; 46. a drive motor; 47. driving the fan blades; 5. and (4) an intersection point.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

the present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

example 1:

as shown in fig. 1 to 4, a bladeless fan includes an upper fan base 1 for discharging air and a lower fan base 2 engaged with the upper fan base 1. The lower fan base 2 is provided with an air inlet 3. A wind power generation device 4 is arranged in the lower fan base 2. The upper fan base 1 and the lower fan base 2 are connected with each other in a clamping manner.

As shown in fig. 6-7, the wind power generator 4 includes a base 41, and a touch switch 42 and a charging port 43 are disposed at the bottom of the base 41. This charge mouth 43 is android or apple charge mouth 43. A battery holder 44 is fixedly connected to the top of the base 41, and a power supply 45 is arranged in the battery holder 44. The power supply 45 is a general rechargeable battery. The power supply 45 is connected with a driving motor 46 through a wire, and the top of the driving motor 46 is rotatably connected with a driving fan blade 47.

Preferably, the driving fan 47 is located above the air inlet 3. Through the arrangement, negative pressure is formed when the driving fan blades 47 rotate, so that external air can enter the driving fan blades 47 along the air inlet 3 to form wind power.

the upper fan base 1 includes an outer case 11 and an inner case 12. Outer shell 11 and interior casing 12 joint each other, and outer shell 11 and interior casing 12 joint form cavity 13, cavity 13 and lower fan base 2 intercommunication, and outer shell 11 and interior casing 12 keep away from one side of fan base 2 down and form long waist shape's air outlet 14, and the cross-sectional area of air outlet 14 position department reduces along the air flow direction gradually.

Preferably, the outer housing 11 is provided with a guide surface 15 for guiding the air flow, and the guide direction of the guide surface 15 is directed to the central position of the long kidney shape of the air outlet 14 formed by the outer housing 11 and the inner housing 12.

as shown in fig. 5, the inner side wall of the inner housing 12 is provided with a slope 16 and a plane 17 connected to the slope 16, and the cross-sectional area of the inner housing 12 increases from the position of the wind outlet 14 along the wind moving direction until the cross-sectional area of the inner housing 12 of the plane 17 at the intersection 5 of the wind guiding directions of the respective guiding surfaces 15 is the maximum cross-sectional area. This position is the intersection of the bevel 16 and the flat surface 17.

Example 2:

As shown in fig. 8 to 10, a bladeless fan includes an upper fan base 1 for discharging air and a lower fan base 2 engaged with the upper fan base 1. The lower fan base 2 is provided with an air inlet 3. A wind power generation device 4 is arranged in the lower fan base 2. The upper fan base 1 and the lower fan base 2 are connected with each other in a clamping manner.

The upper fan base 1 includes an outer case 11 and an inner case 12. Outer shell 11 and interior casing 12 joint each other, outer shell 11 and interior casing 12 joint formation cavity 13, cavity 13 and lower fan base 2 intercommunication, and outer shell 11 and interior casing 12 keep away from down fan base 2 one side and form trapezoidal shape's air outlet 14, and the cross-sectional area of air outlet 14 position department reduces along the air flow direction gradually.

Preferably, the outer housing 11 is provided with a guide surface 15 for guiding the air flow, and the guide direction of the guide surface 15 is directed to the center position of the trapezoidal shape of the air outlet 14 formed by the outer housing 11 and the inner housing 12.

The inner side wall of the inner shell 12 is provided with a slope 16 and a plane 17 connected with the slope 16, the cross-sectional area of the inner shell 12 increases from the position of the air outlet 14 along the moving direction of the wind power, and the cross-sectional area of the inner shell 12 of the plane 17 at the position of the intersection 5 of the guiding directions of the wind power of the guide surfaces 15 is the maximum cross-sectional area. This position is the intersection of the bevel 16 and the flat surface 17. The principle is the same as that of embodiment 1, and the description is omitted.

Example 3:

As shown in fig. 11 to 13, a bladeless fan includes an upper fan base 1 for discharging air and a lower fan base 2 engaged with the upper fan base 1. The lower fan base 2 is provided with an air inlet 3. A wind power generation device 4 is arranged in the lower fan base 2. The upper fan base 1 and the lower fan base 2 are connected with each other in a clamping manner.

The upper fan base 1 includes an outer case 11 and an inner case 12. Outer shell 11 and interior casing 12 joint each other, outer shell 11 and interior casing 12 joint formation cavity 13, cavity 13 and lower fan base 2 intercommunication, and outer shell 11 and interior casing 12 keep away from one side of lower fan base 2 and form circular shape's air outlet 14, and the cross-sectional area of air outlet 14 position department reduces along the air flow direction gradually.

Preferably, the outer housing 11 is provided with a guide surface 15 for guiding the air flow, and the guide direction of the guide surface 15 is directed to the center position of the circular shape of the air outlet 14 formed by the outer housing 11 and the inner housing 12.

Example 4:

As shown in fig. 14 to 16, a bladeless fan includes an upper fan base 1 for discharging air and a lower fan base 2 engaged with the upper fan base 1. The lower fan base 2 is provided with an air inlet 3. A wind power generation device 4 is arranged in the lower fan base 2. The upper fan base 1 and the lower fan base 2 are connected with each other in a clamping manner.

The upper fan base 1 includes an outer case 11 and an inner case 12. Outer shell 11 and interior casing 12 joint each other, and outer shell 11 and interior casing 12 joint form cavity 13, cavity 13 and lower fan base 2 intercommunication, and outer shell 11 and interior casing 12 keep away from one side of fan base 2 down and form waist shape's air outlet 14, and the cross-sectional area of air outlet 14 position department reduces along the air flow direction gradually.

Preferably, the outer housing 11 is provided with a guide surface 15 for guiding the air flow, and the guide direction of the guide surface 15 is directed to the central position of the waist shape of the air outlet 14 formed by the outer housing 11 and the inner housing 12.

Claims

1. The utility model provides a bladeless fan, including last fan base (1) that is used for the air-out and with lower fan base (2) of last fan base (1) block, be provided with air intake (3) down on fan base (2), be provided with wind power generation device (4) down in fan base (2), last fan base (1) and fan base (2) interconnect down, characterized by: go up fan base (1) including shell body (11) and interior casing (12), interior casing (12) and shell body (11) joint each other, be provided with cavity (13) that can supply the air to pass through between shell body (11) and interior casing (12), and locate to form air outlet (14) at the inside wall of shell body (11), air outlet (14) are restrainted from inside to outside, and air outlet (14) cross-sectional area reduces.

2. The bladeless fan of claim 1, wherein: the outer shell (11) is provided with a guide surface (15) for guiding the air flow.

3. The bladeless fan of claim 2, wherein: the guide direction of the guide surface (15) points to the central position of an air outlet (14) formed by the outer shell (11) and the inner shell (12).

4. A bladeless fan according to claim 3, wherein: the cross-sectional area of the inner shell (12) increases from the position of the air outlet (14) along the moving direction of the wind power until the cross-sectional area of the inner shell (12) of a plane (17) where the intersection point (5) of the wind power guiding directions of the guide surfaces (15) is located is the maximum cross-sectional area.

5. the bladeless fan of claim 1, wherein: the air outlet (14) is in a shape of a waist, a trapezoid, a circle or a long waist.

6. The bladeless fan of claim 1, wherein: wind power generation set (4) is including drive flabellum (47), drive flabellum (47) are connected with driving motor (46), driving motor (46) are connected with power (45), power (45) bottom is connected with switching device.

7. The bladeless fan of claim 6, wherein: the switch device comprises a touch switch (42), a charging port (43) is arranged near the touch switch (42), and the charging port (43) is an android or apple charging port (43).

8. The bladeless fan of claim 6, wherein: the position of the driving fan blade (47) is above the position of the air inlet (3).