CN215292959U - Bladeless fan air duct structure, bladeless fan and bladeless fan lamp - Google Patents

Bladeless fan air duct structure, bladeless fan and bladeless fan lamp Download PDF

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Publication number
CN215292959U
CN215292959U CN202121333271.0U CN202121333271U CN215292959U CN 215292959 U CN215292959 U CN 215292959U CN 202121333271 U CN202121333271 U CN 202121333271U CN 215292959 U CN215292959 U CN 215292959U
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air
air duct
fan
bladeless fan
duct structure
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曾凡清
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Qingdao Yilai Intelligent Technology Co Ltd
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Qingdao Yilai Intelligent Technology Co Ltd
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Abstract

The utility model provides a bladeless fan wind channel structure, bladeless fan and bladeless fan lamp, wherein, bladeless fan wind channel structure, include: the air outlet is arranged on the second air duct structure; the second air channel structure comprises a first air channel section and a second air channel section which are communicated with each other, the first air channel section and the second air channel section are communicated with the first air channel structure, air coming out of the first air channel structure enters the second air channel structure, and the flow direction of air in the first air channel section is opposite to the flow direction of air in the second air channel section. The technical scheme of the application effectively solves the problem that the user experience is poor due to the fact that the air volume is small in the related technology.

Description

Bladeless fan air duct structure, bladeless fan and bladeless fan lamp
Technical Field
The utility model relates to a fan technical field particularly, relates to a bladeless fan wind channel structure, bladeless fan and bladeless fan lamp.
Background
Fan and lamps and lanterns use the domestic appliance who uses more commonly in the house, and traditional fan and lamps and lanterns divide into two products, and the fan provides the wind energy, and lamps and lanterns provide the illumination, in order to will satisfy the demand in market, the design has bladeless fan ceiling lamp on the market at present.
In the related art, the air blown out by a fan in the bladeless ceiling lamp continuously flows in one direction and flows out through an air outlet. This results in a smaller air volume and a poorer user experience.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a bladeless fan wind channel structure, bladeless fan and bladeless fan lamp to solve the less relatively poor problem of user's experience that leads to of the amount of wind among the correlation technique.
In order to achieve the above object, according to an aspect of the present invention, there is provided a bladeless fan air duct structure, including: the air outlet is arranged on the second air duct structure; the second air channel structure comprises a first air channel section and a second air channel section which are communicated with each other, the first air channel section and the second air channel section are communicated with the first air channel structure, air coming out of the first air channel structure enters the second air channel structure, and the flow direction of air in the first air channel section is opposite to the flow direction of air in the second air channel section.
Furthermore, the second air duct structure is an annular structure, and a flaring air guide structure is arranged at the joint of the first air duct structure and the second air duct structure.
Furthermore, a generatrix of the flaring air guide structure is an arc line, and the radius of the arc line is between 5mm and 10 mm.
According to the utility model discloses a second aspect provides a bladeless fan, including foretell bladeless fan wind channel structure, the bladeless fan still includes: a base having a cavity; the fan is arranged in the cavity; wherein, first wind channel structure intercommunication sets up between cavity and second wind channel structure.
Further, the axis of the first air duct structure extends along the radial direction of the fan or the extending direction of the first air duct structure is parallel to the radial direction of the fan, and the second air duct structure is an annular structure.
Further, the first air duct structure is a straight air duct, or the first air duct structure is a bent air duct.
Furthermore, an air inlet is formed in the base body and located above the fan, and a normal-pressure air area is formed between the air inlet and the fan.
Furthermore, an anti-backflow baffle is further arranged on the base body and located between the normal-pressure air area and the fan, and the anti-backflow baffle covers the periphery of an air inlet of the fan.
Further, the anti-backflow baffle comprises a first shielding section and a second shielding section, the first shielding section is located above the fan, and at least part of the structure of the second shielding section extends into the air inlet of the fan.
Further, the fan comprises an impeller, a plurality of blades are arranged on the impeller at intervals, the diameter of the impeller is a1, the distance between two adjacent blades close to the periphery of the impeller is a2, and a2 is (0.1-0.5) × a 1.
Furthermore, the bladeless fan further comprises a wind shield, the wind shield is arranged in an inclined mode and connected below the second air channel structure, and an air outlet is formed between the wind shield and the second air channel structure.
Further, the wind deflector gradually rises from the direction close to the axis of the fan to the direction away from the axis of the fan.
Furthermore, the bladeless fan further comprises a connecting piece, the connecting piece is connected between the second air channel structure and the base body, and the connecting piece and the first air channel structure are symmetrically arranged relative to the center of the fan.
Further, the distance between the top of the second air duct structure and the top of the base is b1, the diameter of the second air duct structure is b2, wherein b1 and b2 satisfy: b2 ═ 2 to 5 × b 1; the width b3 of the air outlet satisfies: b3 is more than or equal to 1mm and less than or equal to 3 mm.
Further, the height of the first air duct structure is gradually reduced from the direction close to the fan to the direction close to the second air duct structure.
Furthermore, the bladeless fan also comprises a driving device and a control device, and the driving device and the control device are located in the normal-pressure air area.
According to the utility model discloses a third aspect provides a bladeless fan lamp, including bladeless fan and the lamp body that sets up on the bladeless fan, the bladeless fan is foretell bladeless fan.
Furthermore, the bladeless fan further comprises a wind shield, the wind shield is arranged in an inclined mode and connected below the second air channel structure, an air outlet is formed between the wind shield and the second air channel structure, and the lamp body and the air outlet are located on the inner side and the outer side of the wind shield respectively.
Use the technical scheme of the utility model, bladeless fan wind channel structure includes first wind channel structure and second wind channel structure, first wind channel structure and second wind channel structure intercommunication. The second air duct structure is provided with an air outlet. The second air duct structure comprises a first air duct section and a second air duct section, and the first air duct section and the second air duct section are communicated with the first air duct structure. Wind flows into the second air channel structure from the first air channel structure and flows to the first air channel section and the second air channel section in the second air channel structure respectively, and the flow direction of the wind in the first air channel section is opposite to the flow direction of the wind in the second air channel section. The air quantity of the air in the second air channel structure can be effectively improved through the arrangement, the impact of the air in the second air channel structure can occur, namely the impact of the air in the first air channel section and the second air channel section is realized, so that the air quantity in the second air channel structure can be further improved, and the air quantity flowing out through the air outlet is larger. Therefore, the technical scheme of the application effectively solves the problem that the user experience is poor due to the fact that the air volume is small in the related technology.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic cross-sectional view of an embodiment of a bladeless fan air duct structure according to the present invention;
FIG. 2 illustrates a close-up view of the bladeless fan duct configuration of FIG. 1;
FIG. 3 is a schematic cross-sectional view of another angle of the bladeless fan duct structure of FIG. 1;
figure 4 shows a schematic top view of an impeller of a fan according to an embodiment of the present invention;
FIG. 5 shows a perspective view of the impeller of FIG. 4; and
fig. 6 shows a perspective view of the bladeless fan of fig. 1.
Wherein the figures include the following reference numerals:
10. a substrate; 11. a cavity; 12. an air inlet; 13. an anti-backflow baffle; 20. a fan; 31. a first air duct structure; 32. a second air duct structure; 321. a first air duct section; 322. a second air duct section; 40. an air outlet; 50. a lamp body; 60. a flaring air guide structure; 70. a wind deflector; 80. a connecting member.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Compared with the prior art in which one-way circulating air is formed in the annular air duct through the two air outlets, the technical scheme of the embodiment selects one air supply pipe to output two paths of air with different wind directions.
The inventor finds that two air supply pipes are selected in the prior art, the air output is seemingly increased, the length of the Archimedes spiral air duct is greatly shortened, and the air supercharging effect is greatly influenced. Meanwhile, in the prior art, one-way circulating air supply is selected, so that air continuously moves in an ineffective circulating manner in the annular air duct, and finally the air quantity coming out through the air outlet is not much. The technical scheme of this application supplies air through a blast pipe, has expanded the length of Archimedes spiral duct, has promoted the pressure boost effect of wind. Meanwhile, the technical scheme of the embodiment selects to output two paths of wind with different wind directions simultaneously, looks like a wind direction conflict, actually increases the wind pressure through the opposite impact of the wind, and further increases the air output. Simultaneously, the simple structure of the fan of this embodiment need not additionally increase booster mechanism, need not make big change to product appearance, can show and promote the air supply effect.
The bladeless fan has unique modeling and air supply technology; and their hidden blade design, are becoming increasingly popular in the market place without covering dust or injuring the fingers of the child inserted. In the related art, the wind has only one flow direction in the wind outlet duct, and when the wind flows out through the wind outlet, the speed of the wind is gradually reduced when the wind flows, so that the wind cannot be effectively blown to a user, and the problem is solved. As shown in fig. 1 to 3, in the present embodiment, the bladeless fan air duct structure includes: the air conditioner comprises a first air duct structure 31 and a second air duct structure 32 communicated with the first air duct structure 31, wherein an air outlet 40 is arranged on the second air duct structure 32; the second air duct structure 32 includes a first air duct section 321 and a second air duct section 322 that are communicated with each other, the first air duct section 321 and the second air duct section 322 are both communicated with the first air duct structure 31, air coming out from the first air duct structure 31 enters the second air duct structure 32, and the flow direction of air in the first air duct section 321 is opposite to the flow direction of air in the second air duct section 322.
By applying the technical scheme of this embodiment, the bladeless fan air duct structure includes the first air duct structure 31 and the second air duct structure 32, and the first air duct structure 31 is communicated with the second air duct structure 32. The second air duct structure 32 is provided with an air outlet 40. The second air duct structure 32 includes a first air duct section 321 and a second air duct section 322, and both the first air duct section 321 and the second air duct section 322 are communicated with the first air duct structure 31. Wind flows into the second air duct structure 32 from the first air duct structure 31, and flows into the first air duct section 321 and the second air duct section 322 in the second air duct structure 32, respectively, and the flow direction of the wind in the first air duct section 321 is opposite to the flow direction of the wind in the second air duct section 322. Through the above arrangement, the air volume of the air in the second air duct structure 32 can be effectively improved, and the impact of the air in the second air duct structure 32 can occur, that is, the impact of the air in the first air duct section 321 and the second air duct section 322 can be mutually realized, so that the air volume in the second air duct structure 32 can be further improved, and further, the air volume flowing out through the air outlet 40 is relatively large. Therefore, the technical scheme of the embodiment effectively solves the problem of poor user experience caused by small air volume in the related technology.
Because the angle between the first air duct section 321 and the first air duct structure 31 is an acute angle, the air volume flowing into the first air duct section 321 is small, and further the air volume of each air outlet 40 is different, in order to avoid the above situation, the inventor has performed a lot of experiments, and a flared air guide structure 60 is disposed at the joint of the first air duct structure 31 and the second air duct structure 32. As shown in fig. 3, in this embodiment, the flared air guiding structure 60 is configured to effectively reduce the vortex generated at the joint between the first air duct structure 31 and the first air duct section 321 by the flowing air, so as to further ensure the flow velocity of the air, and further improve the air volume of the air flowing out through the air outlet 40, so as to enable the user experience to be better.
It should be noted that, the second air duct structure 32 of the present embodiment is an annular structure, and the wind in the first air duct section 321 and the wind in the second air duct section 322 can collide with each other, that is, strong convection wind is generated, so that the wind volume and the wind speed can be increased.
As shown in fig. 3, in the present embodiment, a generatrix of the flared air guiding structure 60 is an arc, a radius of the arc is 8mm, and the radius of the arc needs to be matched with an overall size of the bladeless fan air duct structure to avoid generation of a vortex. Of course, the radius of the arc may be between 5mm and 10 mm.
According to a second aspect of the present application, there is provided a bladeless fan, the bladeless fan according to the present embodiment includes the above-mentioned bladeless fan air duct structure, and the bladeless fan further includes: a base body 10 and a fan 20. The substrate 10 has a cavity 11. The fan 20 is installed in the cavity 11. Wherein, the first air duct structure 31 is disposed between the cavity 11 and the second air duct structure 32 in a communicating manner. The bladeless fan air duct structure is large in air volume, and user experience can be effectively improved, so that the bladeless fan with the bladeless fan air duct structure also has the functions.
In order to avoid the loss of the wind flow velocity, as shown in fig. 1 and 3, in the present embodiment, the axis of the first air duct structure 31 extends in a direction parallel to the radial direction of the fan 20, and the second air duct structure 32 is an annular structure. The arrangement can enable the air blown out by the fan 20 to flow into the first air channel section 321 and the second air channel section 322 respectively, and can enable the air to correspond to the air outlet of the fan 20 exactly, so that the consumption of the air blown out by the fan 20 can be effectively reduced, and the air quantity is ensured. Moreover, the arrangement structure is simple and convenient to process. Specifically, the fan 20 of the present embodiment is a centrifugal fan.
In an embodiment not shown in the figures, the first air channel structure extends in a radial direction of the fan, which also enables the fan to blow air into the first air channel structure. If the fan adopts axial fan, then first wind channel structure extends along the axial of fan, for the maximize of guaranteeing the amount of wind this moment, needs to make the extending direction of first wind channel structure and the axis collineation of fan.
As shown in fig. 1 and fig. 3, in the present embodiment, the first air duct structure 31 is a straight air duct, and the straight air duct is provided to facilitate the flow of air, so as to avoid the interference of the first air duct structure 31 on the flow of air.
In an embodiment not shown in the figures, the first air duct structure is a curved air duct. The bent air duct can also effectively circulate the wind.
In order to prevent the blown air from being sucked into the air inlet, as shown in fig. 1 and 5, in the present embodiment, an air inlet 12 is provided on the base 10, the air inlet 12 is located above the fan 20, and a normal pressure air region is formed between the air inlet 12 and the fan 20. The air inlet 12 is disposed above the fan, and the screen structure is disposed at the air inlet 12, so that impurities can be prevented from entering the first air duct structure 31 and the second air duct structure 32. Meanwhile, because the air inlet 12 is arranged above the fan, namely above the air outlet 40, the blown air can be prevented from being sucked into the air inlet 12, and the blowing effect can be indirectly ensured.
It should be noted that the above-mentioned normal pressure air region is only relative to the pressurized air in the first air channel structure 31 and the second air channel structure 32. In practical applications, the air pressure in the normal pressure air region may be slightly lower than the ambient air pressure due to the resistance of the air inlet 12.
In order to avoid the wind from flowing back, that is, from flowing from the fan to the air inlet, as shown in fig. 1, in this embodiment, the base 10 is further provided with a backflow preventing baffle 13, the backflow preventing baffle 13 is located between the normal pressure air area and the fan 20, and the backflow preventing baffle 13 blocks the periphery of the air inlet of the fan 20. The anti-backflow baffle 13 separates a conventional air pressure area and a compressed air area (in the first air channel structure 31 and the second air channel structure 32) to prevent air from flowing back, and the fan 20 is matched with the Archimedes spiral air channel to form a strong convection air channel with high wind speed and high wind pressure.
In order to improve the effect of backflow prevention, as shown in fig. 1, in this embodiment, the backflow prevention baffle 13 includes a first shielding section and a second shielding section, the first shielding section is connected above the fan 20 at the first shielding section, and at least a part of the structure of the second shielding section extends into the air inlet of the fan 20. First sheltering from section and second and sheltering from the section cooperation, and then make the effect of sheltering from better, even between wind current to fan 20 and anti-reflux baffle 13, also can shelter from the effect of section through the second and flow back to in the air inlet of fan 20.
As shown in fig. 4 and 5, in the present embodiment, the fan 20 includes an impeller, a plurality of blades are spaced on the impeller, the diameter of the impeller is a1, and the distance between two adjacent blades close to the outer periphery of the impeller is a2, where a1 and a2 satisfy: a2 is (0.1-0.5) a 1. The above ratio relationship can obtain higher air pressure and wind speed. Specifically, in the present embodiment, a2 is 0.3a 1.
In order to avoid the wind shielding plate from being damaged by blowing, as shown in fig. 1 and fig. 2, in the present embodiment, the bladeless fan further includes a wind shielding plate 70, the wind shielding plate 70 is disposed obliquely, the wind shielding plate 70 is connected below the second air channel structure 32, and the air outlet 40 is formed between the wind shielding plate 70 and the second air channel structure 32. Because the wind deflector 70 is obliquely arranged, the size of the air outlet 40 is smaller than the sectional size of the second air duct structure 32, so that the wind can flow out through the air outlet 40, the flow rate of the wind can be increased, and the wind can be blown to a longer distance. In particular, the wind deflector 70 is an arc, which also enables the wind deflector 70 to guide the wind, avoiding direct blows of the wind.
As shown in fig. 1 and 2, in the present embodiment, the wind deflector 70 gradually rises from near the axis of the fan 20 to far from the axis of the fan 20. Such setting can make holistic structure more regular to can guarantee deep bead 70's structural strength, avoid deep bead 70 to be blown and drop.
In order to make the whole lamp more stable, as shown in fig. 3 and 6, in this embodiment, the bladeless fan further includes a connecting member 80, the connecting member 80 is connected between the second air duct structure 32 and the base 10, and the connecting member 80 and the first air duct structure 31 are symmetrically arranged about the center of the fan 20. Specifically, the structural shape of the connector 80 is the same as the shape of the first air duct structure 31. Therefore, the centrifugal force generated when the fan 20 rotates can be effectively balanced, and the stability of the lamp is indirectly ensured.
As shown in fig. 1 and 2, in the present embodiment, the distance between the top of the second air duct structure 32 and the top of the base 10 is b1, and the diameter of the second air duct structure 32 is b2, wherein b1 and b2 satisfy: b2 ═ 2 to 5 × b 1; the width b3 of the air outlet 40 satisfies: b3 is more than or equal to 1mm and less than or equal to 3 mm. The above ratio enables the air volume to be larger. Specifically, b 2-3 b1 and b 3-2 mm.
As shown in fig. 1, in the present embodiment, the height of the first air duct structure 31 gradually decreases from the direction close to the fan 20 to the direction close to the second air duct structure 32. The air outlet 40 is closer to the user, so that the experience effect of the user is better.
As shown in fig. 1, in the present embodiment, the fan further includes a driving device and a control device, and the driving device and the control device are located in the atmospheric air region. The driving device and the control device can control the rotation of the fan 20, so that the lamp realizes the blowing function.
According to another aspect of the present application, there is provided a bladeless fan lamp, which includes a bladeless fan and a lamp body 50 disposed on the bladeless fan, wherein the bladeless fan is the above-mentioned bladeless fan. The bladeless fan is larger in air volume, better in blowing effect and capable of effectively improving the using effect of a user. Therefore, the bladeless fan lamp with the bladeless fan also has the functions.
In order to avoid the lamp body from being damaged by blowing, the fan further includes a wind deflector 70, the wind deflector 70 is disposed in an inclined manner, the wind deflector 70 is connected below the second air duct structure 32, an air outlet 40 is formed between the wind deflector 70 and the second air duct structure 32, and the lamp body 50 and the air outlet 40 are respectively located on the inner side and the outer side of the wind deflector 70. The wind guard 70 is provided to effectively separate the wind from the lamp body 50, thereby preventing the wind from directly blowing toward the lamp body 50, which effectively protects the lamp body 50 and prevents the damage thereof.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (18)

1. The utility model provides a bladeless fan wind channel structure which characterized in that includes: the air conditioner comprises a first air duct structure (31) and a second air duct structure (32) communicated with the first air duct structure (31), wherein an air outlet (40) is formed in the second air duct structure (32);
the second air duct structure (32) comprises a first air duct section (321) and a second air duct section (322) which are communicated with each other, the first air duct section (321) and the second air duct section (322) are communicated with the first air duct structure (31), air coming out of the first air duct structure (31) enters the second air duct structure (32), and the flow direction of air in the first air duct section (321) is opposite to the flow direction of air in the second air duct section (322).
2. The bladeless fan air duct structure according to claim 1, wherein the second air duct structure (32) is an annular structure, and a flared air guiding structure (60) is arranged at a joint of the first air duct structure (31) and the second air duct structure (32).
3. The bladeless fan duct structure according to claim 2, wherein a generatrix of the flared air guiding structure (60) is an arc having a radius of between 5mm and 10 mm.
4. A bladeless fan comprising the bladeless fan duct structure of any one of claims 1 to 3, the bladeless fan further comprising:
a base (10), the base (10) having a cavity (11);
the fan (20) is arranged in the cavity (11);
wherein the first air duct structure (31) is communicated between the cavity (11) and the second air duct structure (32).
5. The bladeless fan according to claim 4, wherein the axis of the first air channel structure (31) extends in a radial direction of the fan (20) or the direction of extension of the first air channel structure (31) is parallel to the radial direction of the fan (20), and the second air channel structure (32) is an annular structure.
6. The bladeless fan according to claim 4, wherein the first air duct structure (31) is a straight air duct, or wherein the first air duct structure (31) is a curved air duct.
7. The bladeless fan according to claim 4, wherein an air inlet (12) is formed in the base body (10), the air inlet (12) is located above the fan (20), and a normal-pressure air area is formed between the air inlet (12) and the fan (20).
8. The bladeless fan according to claim 7, wherein a backflow preventing baffle (13) is further arranged on the base body (10), the backflow preventing baffle (13) is located between the normal pressure air area and the fan (20), and the backflow preventing baffle (13) shields the periphery of an air inlet of the fan (20).
9. The bladeless fan according to claim 8, wherein the anti-backflow baffle (13) comprises a first shielding section located above the fan (20) and a second shielding section, at least part of the structure of which protrudes into the air inlet of the fan (20).
10. The bladeless fan according to claim 4, wherein the fan (20) comprises an impeller, a plurality of blades are arranged on the impeller at intervals, the diameter of the impeller is a1, and the distance between two adjacent blades close to the outer periphery of the impeller is a2, wherein a1 and a2 satisfy: a2 is (0.1-0.5) a 1.
11. The bladeless fan according to claim 4, further comprising a wind deflector (70), wherein the wind deflector (70) is disposed obliquely, the wind deflector (70) is connected below the second air channel structure (32), and the wind deflector (70) and the second air channel structure (32) form the wind outlet (40) therebetween.
12. The bladeless fan according to claim 11, wherein the wind deflector (70) gradually increases from close to the axis of the fan (20) to far away from the axis of the fan (20).
13. The bladeless fan according to claim 4, further comprising a connector (80), wherein the connector (80) is connected between the second air channel structure (32) and the base body (10), and wherein the connector (80) and the first air channel structure (31) are symmetrically arranged with respect to a center of the fan (20).
14. The bladeless fan according to claim 4, wherein the distance between the top of the second air channel structure (32) and the top of the base body (10) is b1, the diameter of the second air channel structure (32) is b2, wherein b1 and b2 satisfy: b2 ═ 2 to 5 × b 1; the width b3 of the air outlet (40) satisfies: b3 is more than or equal to 1mm and less than or equal to 3 mm.
15. The bladeless fan according to claim 4, wherein the first air duct structure (31) is gradually reduced in height from a direction close to the fan (20) to a direction close to the second air duct structure (32).
16. The bladeless fan of claim 7 further comprising a drive and a control, the drive and control being located within the atmospheric air region.
17. A bladeless fan lamp comprising a bladeless fan and a lamp body (50) arranged on the bladeless fan, characterized in that the bladeless fan is a bladeless fan according to any one of claims 4 to 16.
18. The bladeless fan lamp according to claim 17, further comprising a wind screen (70), wherein the wind screen (70) is disposed obliquely, the wind screen (70) is connected below the second air duct structure (32), the air outlet (40) is formed between the wind screen (70) and the second air duct structure (32), and the lamp body (50) and the air outlet (40) are respectively located at inner and outer sides of the wind screen (70).
CN202121333271.0U 2021-06-15 2021-06-15 Bladeless fan air duct structure, bladeless fan and bladeless fan lamp Active CN215292959U (en)

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