Integrated bladeless fan

Abstract

The present invention discloses an integrated bladeless fan, which includes a wind wheel and an air duct. The air duct includes an inner air guide cover, an outer air guide cover and a flow guiding rib. The inner air guide cover is coaxially arranged inside the outer air guide cover and forms an annular gap in the shape of a horn with a large head and a small head between adjacent surfaces. A plurality of the flow guiding ribs are respectively arranged around the annular gap and are fixed to the inner air guide cover and the outer air guide cover respectively. The wind wheel is installed outside the outer air guide cover, and air flows in from the small head end of the annular gap and then blows out from the large head end of the annular gap. There is no wind ring structure, and there is no need to make air flow around at the annular inner lip of the wind ring, effectively avoiding the noise caused by the friction between the air and the fan, thereby greatly improving the user experience. At the same time, the fan blades are still invisible on the air outlet side, maintaining a smooth and beautiful shape.

Description

Technical Field

[0001] The present invention relates to the technical field of bladeless fans, especially to the technical field of integrated bladeless fans.

Background Art

[0002] A bladeless fan, also called an air multiplier, can continuously produce cool air. Without exposed blades, it has a simple and beautiful shape and is loved by more and more consumers. The principle of a bladeless fan is that in a specific environment, a motor sucks air into the base, and then the air is blown out at high speed through a centrifugal air duct or a turbocharged air duct and flows around at the annular inner lip of the air ring. Thus, the surrounding force is used to drive the air near the fan head to enter the air ring from one side and then blow out from the other side of the air ring. That is to say, with relatively small air disturbance, relatively more air convection can be driven.

[0003] However, for a bladeless fan adopting such a working principle, such as the bladeless fan with adjustable air direction with the publication number CN215861025U, usually due to reasons such as the relatively long travel of air before blowing out and the need for surrounding flow, the friction sound is relatively obvious, which easily reduces the user experience. In addition, the wind coverage range of traditional bladeless fans is small and the wind force is relatively rigid. Therefore, it is still difficult to well replace traditional blade fans and urgent solutions are needed.

Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art, and propose an integrated bladeless fan without an air ring structure, which does not require air to flow around at the annular inner lip of the air ring, effectively avoiding the noise caused by the friction between the air and the fan, thereby greatly improving the user experience.

[0005] To achieve the above purpose, the present invention proposes an integrated bladeless fan, including a wind wheel and an air duct. The air duct includes an inner air guide cover, an outer air guide cover and a guide rib. The inner air guide cover is coaxially arranged in the outer air guide cover and forms an annular gap in the shape of a horn with one end large and one end small between adjacent surfaces. A plurality of guide ribs are respectively arranged around the annular gap and are fixed to the inner air guide cover and the outer air guide cover respectively. The wind wheel is installed outside the outer air guide cover and makes air flow into from the small head end of the annular gap and blow out from the large head end of the annular gap.

[0006] Preferably, the wind wheel includes a shell cylinder, a support cylinder, a support plate, fan blades and a motor. The support cylinder is coaxially arranged in the shell cylinder through a plurality of support plates. The motor is installed on the support cylinder and can drive each fan blade to rotate.

[0007] Preferably, the support cylinder is elastic and has a plurality of notches at one end close to the air duct to form a plurality of wing pieces. The motor can be inserted along the end of the support cylinder with a plurality of wing pieces and fixed in the cylinder channel.

[0008] Preferably, each of the flow guiding ribs divides the annular gap into several independent chambers.

[0009] Preferably, the inner air guiding cover includes an inner straight cylinder part and an inner horn cylinder part. The inner straight cylinder part is fixed to the large end of the inner horn cylinder part. The outer air guiding cover includes a first outer straight cylinder part, a second outer straight cylinder part and an outer horn cylinder part. The first outer straight cylinder part and the second outer straight cylinder part are respectively fixed to the small end and the large end of the outer horn cylinder part. The inner straight cylinder part is arranged close to the second outer straight cylinder part.

[0010] Preferably, the air duct further includes an inner air ring, inner support pieces, an outer air ring and outer support pieces. The inner air ring is coaxially arranged in the inner straight cylinder part through a plurality of inner support pieces. The outer air ring is coaxially arranged outside the second outer straight cylinder part through a plurality of outer support pieces.

[0011] Preferably, the outer air ring includes a straight ring part and a horn ring part. The straight ring part is fixed to the large end of the horn ring part.

[0012] Preferably, the small end of the horn ring part, the free end of the inner straight cylinder part and one end of the inner air ring are located in the same plane. The small ends of the inner horn cylinder part and the outer horn cylinder part are located in the same plane.

[0013] Preferably, the distance between the inner horn cylinder part and the outer horn cylinder part gradually decreases from the small end to the large end.

[0014] Preferably, the air duct is circular, elliptical, triangular, rectangular or polygonal.

[0015] Advantages of the present invention:

[0016] 1) By coaxially arranging the inner air guiding cover in the outer air guiding cover through a plurality of flow guiding ribs, a horn-shaped annular gap with a large end and a small end is formed between the adjacent surfaces of the inner air guiding cover and the outer air guiding cover, which can cooperate with the wind wheel installed outside the outer air guiding cover, so that air flows in from the small end of the annular gap and blows out from the large end of the annular gap. There is no air ring structure, and there is no need to make air flow around the annular inner lip of the air ring, effectively avoiding the noise caused by the friction between the air and the fan, thus greatly improving the user experience. At the same time, the fan blades are still invisible on the air outlet side, maintaining a smooth and beautiful shape;

[0017] 2) By using each flow guiding rib to divide the annular gap into several independent chambers, the air can be more evenly distributed when passing through the annular gap;

[0018] 3) By making the spacing between the inner horn-shaped tube portion and the outer horn-shaped tube portion gradually decrease from the small end to the large end, the air can be gradually accelerated during the process of passing through the annular gap, thereby ensuring the air outlet intensity.

[0019] 4) By respectively adding an inner air ring and an outer air ring at the air outlet, the air can drive the inner air ring and the outer air ring to vibrate synchronously when flowing out at high speed, thereby doubling the air flow and expanding the air outlet range, so as to avoid the problem of rigid wind force caused by the strong direct blowing of the air flow in a small range in the same direction.

[0020] 5) By providing a plurality of notches at one end of the elastic support cylinder close to the air duct to form a plurality of fins, it is convenient for the quick disassembly and assembly of the motor.

[0021] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Description of the Drawings

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a perspective of Embodiment 1;

[0023] Figure 2 It is a three-dimensional structural schematic diagram of another perspective of Embodiment 1;

[0024] Figure 3 It is a top view of Embodiment 1;

[0025] Figure 4 It is a front view of Embodiment 1;

[0026] Figure 5 It is a bottom view of Embodiment 1;

[0027] Figure 6 It is a three-dimensional structural schematic diagram of the wind wheel of Embodiment 1;

[0028] Figure 7 It is a three-dimensional structural schematic diagram of the air duct of Embodiment 1;

[0029] Figure 8 It is a cross-sectional view of the air duct of Embodiment 1;

[0030] Figure 9 It is a three-dimensional structural schematic diagram of the inner air guide cover, the inner air ring and the inner support pieces after assembly in Embodiment 1;

[0031] Figure 10 It is a three-dimensional structural schematic diagram of the outer air guide cover, the guide ribs, the outer air ring and the outer support pieces after assembly in Embodiment 1;

[0032] Figure 11 It is a cross-sectional view of the outer air guide cover, the guide ribs, the outer air ring and the outer support pieces after assembly in Embodiment 1;

[0033] Figure 12 It is a schematic three-dimensional structure diagram of the second embodiment.

[0034] In the figure: 1 - wind wheel, 11 - shell cylinder, 12 - support cylinder, 121 - notch, 122 - wing, 13 - support plate, 14 - fan blade, 15 - motor, 2 - air duct, 21 - inner air guide cover, 211 - inner straight cylinder part, 212 - inner trumpet cylinder part, 22 - outer air guide cover, 221 - first outer straight cylinder part, 222 - second outer straight cylinder part, 223 - outer trumpet cylinder part, 23 - guide rib, 24 - inner air ring, 25 - inner support piece, 26 - outer air ring, 261 - straight ring part, 262 - trumpet ring part, 27 - outer support piece.

Specific Embodiment

[0035] Embodiment 1:

[0036] Refer to Figures 1 to 11 , the integrated bladeless fan of the present invention includes a wind wheel 1 and an air duct 2. The air duct 2 includes an inner air guide cover 21, an outer air guide cover 22 and guide ribs 23. The inner air guide cover 21 is coaxially arranged inside the outer air guide cover 22 and forms an annular gap in the shape of a trumpet with one end large and the other end small between adjacent surfaces. A plurality of the guide ribs 23 are respectively arranged around the annular gap and are fixed to the inner air guide cover 21 and the outer air guide cover 22 respectively. The wind wheel 1 is installed outside the outer air guide cover 22 and makes air flow into from the small head end of the annular gap and blow out from the large head end of the annular gap.

[0037] The wind wheel 1 includes a shell cylinder 11, a support cylinder 12, a support plate 13, fan blades 14 and a motor 15. The support cylinder 12 is coaxially arranged inside the shell cylinder 11 through a plurality of support plates 13. The motor 15 is installed on the support cylinder 12 and can drive each fan blade 14 to rotate.

[0038] The support cylinder 12 is elastic and has a plurality of notches 121 at one end close to the air duct 2 and forms a plurality of wings 122. The motor 15 can be inserted and fixed in the cylinder channel along one end of the support cylinder 12 with a plurality of wings 122.

[0039] Each of the guide ribs 23 divides the annular gap into a plurality of independent chambers.

[0040] The inner air guide cover 21 includes an inner straight cylinder part 211 and an inner trumpet cylinder part 212. The inner straight cylinder part 211 is fixed to the large head end of the inner trumpet cylinder part 212. The outer air guide cover 22 includes a first outer straight cylinder part 221, a second outer straight cylinder part 222 and an outer trumpet cylinder part 223. The first outer straight cylinder part 221 and the second outer straight cylinder part 222 are respectively fixed to the small head end and the large head end of the outer trumpet cylinder part 223. The inner straight cylinder part 211 is arranged close to the second outer straight cylinder part 222.

[0041] The air duct 2 further includes an inner air ring 24, inner support pieces 25, an outer air ring 26 and outer support pieces 27. The inner air ring 24 is coaxially arranged in the inner straight cylinder part 211 through a plurality of inner support pieces 25, and the outer air ring 27 is coaxially arranged outside the second outer straight cylinder part 222 through a plurality of outer support pieces 27.

[0042] The outer air ring 26 includes a straight ring part 261 and a horn ring part 262, and the straight ring part 261 is fixed to the large-head end of the horn ring part 262.

[0043] The small-head end of the horn ring part 262, the free end of the inner straight cylinder part 211 and one end of the inner air ring 24 are located on the same plane, and the small-head ends of the inner horn cylinder part 212 and the outer horn cylinder part 223 are located on the same plane.

[0044] The distance between the inner horn cylinder part 212 and the outer horn cylinder part 223 gradually decreases from the small-head end to the large-head end.

[0045] The air duct 2 is circular.

[0046] Working process of the present invention:

[0047] During the working process, the motor 15 drives each fan blade 14 to rotate, so that the outside air enters the annular gap along the small-head end after passing through the shell cylinder 11. At this time, since each flow guiding rib divides the annular gap into several independent chambers, and at the same time the distance between the inner horn cylinder part 212 and the outer horn cylinder part 223 gradually decreases from the small-head end to the large-head end, the air flow speed can be increased after the air uniformly passes through each gradually narrowing chamber. When the high-speed wind flows out from the air outlets of each chamber, it can also drive the inner air ring 24 and the outer air ring 26 to move synchronously, so that the air flow doubles, the air outlet range is expanded, and at the same time the wind force is relatively softer and more natural.

[0048] Embodiment 2:

[0049] Refer to Figure 12 , the air duct 2 is rectangular.

[0050] Others are the same as Embodiment 1.

[0051] The above embodiments are descriptions of the present invention, not limitations on the present invention. Any scheme obtained by simply transforming the present invention belongs to the protection scope of the present invention.

Claims

1. Integrated bladeless fan, characterized in that: It includes a wind wheel (1) and an air duct (2). The air duct (2) includes an inner air guide cover (21), an outer air guide cover (22) and a flow guiding rib (23). The inner air guide cover (21) is coaxially arranged inside the outer air guide cover (22) and forms an annular gap in the shape of a horn with a large end and a small end between adjacent surfaces. A plurality of the flow guiding ribs (23) are respectively arranged around the annular gap and are fixed to the inner air guide cover (21) and the outer air guide cover (22). The wind wheel (1) is installed outside the outer air guide cover (22) and makes air flow into from the small end of the annular gap and then flow out from the large end of the annular gap. The inner air guide cover (21) includes an inner straight cylinder part (211) and an inner horn cylinder part (212). The inner straight cylinder part (211) is fixed to the large end of the inner horn cylinder part (212). The outer air guide cover (22) includes a first outer straight cylinder part (221), a second outer straight cylinder part (222) and an outer horn cylinder part (223). The first outer straight cylinder part (221) and the second outer straight cylinder part (222) are respectively fixed to the small end and the large end of the outer horn cylinder part (223). The inner straight cylinder part (211) is arranged close to the second outer straight cylinder part (222). The air duct (2) further includes an inner air ring (24), inner support pieces (25), an outer air ring (26) and outer support pieces (27). The inner air ring (24) is coaxially arranged inside the inner straight cylinder part (211) through a plurality of inner support pieces (25). The outer air ring (26) is coaxially arranged outside the second outer straight cylinder part (222) through a plurality of outer support pieces (27).

2. The integrated bladeless fan according to claim 1, wherein: The wind wheel (1) includes a shell cylinder (11), a support cylinder (12), a support plate (13), fan blades (14) and a motor (15). The support cylinder (12) is coaxially arranged inside the shell cylinder (11) through a plurality of support plates (13). The motor (15) is installed on the support cylinder (12) and can drive each fan blade (14) to rotate.

3. The integrated bladeless fan according to claim 2, wherein: The support cylinder (12) is elastic and has a plurality of notches (121) at one end close to the air duct (2) and forms a plurality of wing pieces (122). The motor (15) can be inserted and fixed in the cylinder channel along one end of the support cylinder (12) with a plurality of wing pieces (122).

4. The integrated bladeless fan according to claim 1, wherein: Each of the flow guiding ribs (23) divides the annular gap into a plurality of independent chambers.

5. The integrated bladeless fan according to claim 1, characterized in that:

6. The integrated bladeless fan according to claim 5, wherein: The outer air ring (26) includes a straight ring part (261) and a horn ring part (262). The straight ring part (261) is fixed to the large end of the horn ring part (262).

7. The integrated bladeless fan according to claim 1, wherein: The small end of the horn ring part (262), the free end of the inner straight cylinder part (211) and one end of the inner air ring (24) are located on the same plane. The small ends of the inner horn cylinder part (212) and the outer horn cylinder part (223) are located on the same plane.

8. The integrated bladeless fan according to any one of claims 1 to 7, characterized in that: The distance between the inner horn cylinder part (212) and the outer horn cylinder part (223) gradually decreases from the small end to the large end. The air duct (2) is circular, oval, triangular, rectangular or polygonal.

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