CN216922616U

CN216922616U - Fan cover and fan

Info

Publication number: CN216922616U
Application number: CN202220734034.3U
Authority: CN
Inventors: 何振斌; 杨涛; 张玮玮; 刘镇根
Original assignee: GD Midea Environment Appliances Manufacturing Co Ltd
Current assignee: GD Midea Environment Appliances Manufacturing Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-07-08
Anticipated expiration: 2032-03-31
Also published as: WO2023186082A1

Abstract

The utility model provides a fan cover and a fan, wherein the fan cover comprises: the net cover comprises an air outlet part; the air guide ring is arranged in the mesh enclosure, at least one part of the air guide ring comprises an air channel extending along the first direction, and the air channel is used for guiding air to the air outlet part. The fan cover comprises a net cover and a flow guide ring, wherein an air outlet part is arranged on the net cover, and air flow can flow out of the net cover through the air outlet part. At least one part of the flow guide ring is arranged in the mesh enclosure, the flow guide ring comprises an air channel, and air flows out of the air outlet part after passing through the air channel, so that air is adjusted. The technical scheme that this application provided is through the setting of water conservancy diversion ring for the air current realizes adjusting under the effect of water conservancy diversion ring, in order to improve the air-out effect of fan casing.

Description

Fan cover and fan

Technical Field

The utility model relates to the technical field of household appliances, in particular to a fan cover and a fan.

Background

At present, the fan casing mainly used protects the user from being injured by the flabellum, but the fan casing still has certain influence to the outward appearance and the air flow of fan when protecting the user for the air-out effect of fan is not good.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve at least one of the problems occurring in the prior art or the related art.

To this end, a first aspect of the utility model provides a fan casing.

The second aspect of the present invention also provides a fan.

In view of the above, a first aspect of the present invention provides a fan cover, including: the net cover comprises an air outlet part; the air guide ring is arranged in the mesh enclosure, at least one part of the air guide ring comprises an air channel extending along the first direction, and the air channel is used for guiding air to the air outlet part.

The fan cover comprises a net cover and a flow guide ring, wherein an air outlet part is arranged on the net cover, and air flow can flow out of the net cover through the air outlet part. At least one part of the flow guide ring is arranged in the mesh enclosure, the flow guide ring comprises an air channel, and air flows out of the air outlet part after passing through the air channel, so that air is adjusted. The technical scheme that this application provided is through the setting of water conservancy diversion ring for the air current realizes adjusting under the effect of water conservancy diversion ring, in order to improve the air-out effect of fan casing.

The air duct extends along the first direction, and the air flow can flow along the first direction under the guidance of the air duct.

According to the fan cover provided by the utility model, the fan cover can also have the following additional technical characteristics:

in the above technical scheme, further, the wind channel includes air intake and air outlet, and the inside wall in wind channel has the contained angle with first direction between.

In the technical scheme, the air duct comprises an air inlet and an air outlet, and the air inlet and the air outlet are distributed along a first direction. Wherein, the inside wall in wind channel has the contained angle with first direction between, like this, when the air current passes through the wind channel, under the guide of first lateral wall for fan drive's air current's flow direction can have the contained angle with between the first direction, and then realizes the regulation of the flow direction of air current at least, thereby improves the air-out performance of fan.

Further, along first direction, the air outlet is located between air intake and the air-out portion, that is to say, along first direction, the air current is after air intake and air outlet in proper order, via air-out portion outflow screen panel, and then realizes the regulation to the air through the wind channel.

In any of the above technical solutions, further, the included angle is greater than or equal to 0 ° and less than or equal to 90 °.

In this technical scheme, the contained angle between the inside wall in first direction and wind channel is too big, then can occupy great space, increases manufacturing cost, and the contained angle undersize between the inside wall in first direction and wind channel then can weaken the guide effect of water conservancy diversion ring to the air current, consequently, sets up the contained angle between the inside wall in first direction and wind channel between 0 to 90, has guaranteed the guide effect of water conservancy diversion ring to the air current.

In any of the above technical solutions, further, the area of the air inlet is smaller than the area of the air outlet.

In this technical scheme, the area of air intake is less than the area of air outlet, like this, through the setting in wind channel, can realize the diffusion to the air current, and then improve the air-out scope to improve the air-out performance of fan, weaken the screen panel to the influence of air-out.

In any of the above technical solutions, further, along the first direction, the air duct is arranged in a gradually expanding manner so that the flow guide ring is trumpet-shaped.

In this technical scheme, the wind channel sets up along the first direction gradually, makes the water conservancy diversion ring be loudspeaker form, that is, by air intake to air outlet, the cross-sectional area in wind channel is crescent along the first direction, and then the through-flow area of air current crescent, when realizing the effect of diffusion to the air current, can also guarantee the stationarity that the air current flows, and then the noise that produces when reducing the air current and passing through the wind channel promotes the performance of fan.

In any of the above technical solutions, further, the area of the air outlet is smaller than the area of the air inlet, the air duct is gradually expanded along a second direction, and the second direction is opposite to the first direction.

In this technical scheme, the area of air outlet is less than the area of air intake, that is to say, along first direction, the through-flow area that the air current flowed in the wind channel is greater than the through-flow area that flows out the wind channel for the wind channel produces effect with higher speed to the air current, and then can make the air current that flows out air-out portion flow to farther place, increases the adjustment range of fan to indoor air. The wind channel is arranged along the second direction in a gradually expanding mode, wherein the second direction is opposite to the first direction, namely, the cross sectional area of the wind channel is gradually reduced along the flowing direction of the air flow, the flowing area of the air flow is gradually reduced under the guiding of the wind channel, and then the flowing speed of the air flow is gradually increased, namely, the air flow can flow out of the fan cover in an accelerating mode under the guiding of the wind channel, and then the flowing distance of the air flow is increased.

In any of the above technical solutions, further, in a cross section along the first direction, a cross section of the inner side wall of the air duct is linear or curved.

In the technical scheme, in the section along the first direction, the section of the inner side wall of the air duct is linear or curved, and then under the guidance of the inner side wall of the air duct, the airflow extends linearly or curvedly along the inner side wall of the air duct.

In any of the above technical solutions, further, the flow guide ring is circular, the mesh enclosure is circular, and the radius of the flow guide ring is smaller than that of the mesh enclosure.

In the technical scheme, the flow guide ring is annular, the mesh enclosure is circular, and the radius of the flow guide ring is smaller than that of the mesh enclosure, so that the air flow adjusting effect is guaranteed.

It can be understood that the radius of the guide ring is the radius of the hollow circle enclosed by the guide ring.

In any one of the above technical solutions, further, along the circumferential direction of the mesh enclosure, the outer side wall of the flow guide ring is connected with the inner side wall of the mesh enclosure.

In this technical scheme, along the circumference direction of screen panel, the lateral wall of water conservancy diversion ring is connected with the inside wall of screen panel, also promptly, the water conservancy diversion ring encircles along the inside wall of screen panel and forms, and like this, the water conservancy diversion ring forms along the circumference of screen panel and shelters from, has realized the differentiation of fan housing's outward appearance.

In any of the above technical solutions, further, a hollow portion is disposed on the sidewall of the flow guide ring.

In this technical scheme, be provided with fretwork portion on the lateral wall of water conservancy diversion ring, the air current can be via the flow direction fan casing outside of fretwork portion, has reduced the hindrance to the air current, has promoted the air output of fan casing.

In any of the above technical solutions, further, the hollowed-out portion includes at least one of a through hole and a grid.

In this technical scheme, fretwork portion includes the through-hole, is provided with the through-hole on the lateral wall of water conservancy diversion ring also, and the air current can be through the through-hole outflow fan casing, not only can make the air current broken up, avoids the air current directly to blow the people, can also increase the air output of fan. The hollow part comprises a grating, namely the grating is arranged on the side wall of the guide ring, air flow can flow out of the fan cover through gaps between the gratings, air output is guaranteed, the air flow can be prevented from directly blowing people, and the non-wind-sense effect of the air flow is improved.

According to a second aspect of the present invention, there is also provided a fan comprising: the fan cover provided by any one of the technical schemes.

The fan provided by the second aspect of the utility model has all the beneficial effects of the fan cover because the fan cover provided by any technical scheme is included.

In any of the above technical solutions, further, the fan further includes: the fan cover is connected with the housing and encloses the accommodating cavity; the flabellum is located and is held the intracavity, and the axis direction of flabellum sets up along first direction, and the flabellum passes through the wind channel to air-out portion air supply.

In this technical scheme, the fan still includes housing and flabellum, and the housing is connected with the fan casing, and specifically, the housing encloses with the fan casing and holds the chamber, and the flabellum setting is holding the intracavity, through the rotation of flabellum, and the drive air current flows. Wherein, the axis direction of flabellum sets up along first direction, and then the flabellum can be to the wind channel interior air supply.

In any of the above technical solutions, further, a ratio of a radius of the air inlet of the air duct to a radius of the fan blade is greater than or equal to 0.8 and less than or equal to 2.

In the technical scheme, the ratio of the radius of the air inlet of the air duct to the radius of the fan blades is too small, so that the air outlet volume of the fan is influenced, and when the ratio of the radius of the air inlet of the air duct to the radius of the fan blades is too large, the guiding effect of the guide ring on the air flow is weakened. Specifically, the ratio of the radius of the air inlet of the air duct to the radius of the fan blades is greater than or equal to 0.8 and less than or equal to 2, so that the air outlet amount is ensured, and the air flow is guided by the air duct.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 illustrates one of the partial block diagrams of a fan according to one embodiment of the present invention;

FIG. 2 is a second schematic view of a fan according to an embodiment of the present invention;

FIG. 3 is a third schematic view of a fan according to an embodiment of the present invention;

fig. 4 is a fourth partial schematic structural diagram of the fan according to the embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:

the wind power generation device comprises a net cover 1, a wind outlet part 10, a flow guide ring 2, an air duct 20, an air inlet 22, an air outlet 24 and fan blades 3.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Fan shrouds and fans according to some embodiments of the present invention are described below with reference to fig. 1 to 4.

The first embodiment is as follows:

as shown in fig. 1 and 2, according to an embodiment of the present invention, there is provided a fan cover including: screen panel 1 and water conservancy diversion ring 2.

Specifically, the mesh enclosure 1 includes an air outlet portion 10, and the air current can flow out of the air duct 20 through the air outlet portion 10, and at least a part of the flow guide ring 2 is disposed in the mesh enclosure 1 for guiding the air current to flow, wherein the flow guide ring 2 includes the air duct 20, and the air duct 20 extends along a first direction for guiding the air to the air outlet portion 10.

The utility model provides a fan cover, which comprises a net cover 1 and a flow guide ring 2, wherein an air outlet part 10 is arranged on the net cover 1, and air flow can flow out of the net cover 1 through the air outlet part 10. At least one part of the guide ring 2 is arranged in the mesh enclosure 1, the guide ring 2 comprises an air duct 20, and air flows out of the air outlet part 10 after passing through the air duct 20, so that air conditioning is realized. The embodiment that this application provided is through the setting of guide ring 2 for the air current realizes adjusting under guide ring 2's effect, with the air-out effect that improves the fan casing.

Wherein the air duct 20 extends along a first direction, and the air flow can be enabled to flow along the first direction under the guidance of the air duct 20.

Further, the first direction is an axial direction of the fan blade 3 of the fan. Specifically, the first direction is a flow direction of the airflow.

It can be understood, the fan casing can protect the user not receive the injury of flabellum 3 of fan, flabellum 3 drives the air current and flows, and then the air current flows the fan casing behind screen panel 1, adjust with the indoor environment, be provided with air-out portion 10 on screen panel 1, generally, air-out portion 10 includes grid or through-hole, this kind of set up the mode can also avoid user's finger to stretch into in screen panel 1 by flabellum 3 fish tail when guaranteeing the air output, wherein, screen panel 1's setting is in the user of protection, still can influence the flow of air current, and this application is through setting up water conservancy diversion ring 2, can guide the air current and flow, and then weaken screen panel 1 influence to the air current, improve the air-out effect of fan casing.

In a specific application, the guide ring 2 adjusts the airflow, including adjusting the flow direction of the airflow and adjusting the flow rate of the airflow. For example, the setting mode through adjustment wind channel 20 makes the air current flow to the different direction flow, and then realizes the air-out of equidirectional, perhaps, through adjustment wind channel 20's setting mode for the velocity of flow of air current accelerates or slows down, and then changes the velocity of flow of the air current of flowing out the fan casing, realizes different air-out effects, reduces the fan casing and to the hindrance effect of air current, has improved the air-out performance of fan.

Further, the net cover 1 and the guide ring 2 are of an integrated structure or a split structure.

Example two:

as shown in fig. 3, according to an embodiment of the present invention, on the basis of the above embodiment, further: the air duct 20 includes an intake opening 22 and an outlet opening 24.

Specifically, the air inlet 22 and the air outlet 24 are distributed along a first direction, wherein an included angle is formed between an inner side wall of the air duct 20 and the first direction.

In this embodiment, the air duct 20 includes an intake opening 22 and an outlet opening 24. Wherein, the inside wall in wind channel 20 has the contained angle with the first direction between, like this, when the air current passes through wind channel 20, under the guide of first lateral wall for the flow direction of fan driven air current can have the contained angle with the first direction between, and then realizes the regulation of the flow direction of air current at least, thereby improves the air-out performance of fan.

It will be appreciated that in a cross-section taken in the first direction, the cross-section of the inner side wall of the air duct 20 is angled with respect to the first direction.

In a specific application, the first direction is arranged along the axial direction of the fan blade 3.

Further, along the first direction, the air outlet 24 sets up between air intake 22 and air-out portion 10, and air intake 22 and air outlet 24 distribute along the first direction, and air outlet 24 sets up between air intake 22 and air-out portion 10, and that is to say, along the first direction, the air current passes through air intake 22 and air outlet 24 in proper order after, flows out screen panel 1 via air-out portion 10, and then realizes the regulation to the air through wind channel 20.

Example three:

as shown in fig. 3, according to an embodiment of the present invention, on the basis of the second embodiment, further: an included angle α between the inner side wall of the air duct 20 and the first direction is greater than or equal to 0 ° and less than or equal to 90 °.

In this embodiment, an included angle α between the first direction and the inner side wall of the air duct 20 is too large, which occupies a large space and increases the manufacturing cost, and an included angle α between the first direction and the inner side wall of the air duct 20 is too small, which weakens the guiding effect of the guide ring 2 on the air flow, so that the included angle α between the first direction and the inner side wall of the air duct 20 is set between 0 ° and 90 °, which ensures the guiding effect of the guide ring 2 on the air flow.

In specific application, under the condition that an included angle alpha between the first direction and the inner side wall of the air duct 20 is equal to 0 degree, under the guiding of the air duct 20, the air flow flows along the first direction, so that the air flow can flow to a farther place, the adjustment of remote air is realized, and the use performance of the fan is improved.

In the case that the angle α between the first direction and the inner side walls of the air duct 20 is greater than 0 ° and less than 90 °, the airflow can flow along the inner side walls of the air duct 20 under the guidance of the inner side walls of the air duct 20. So as to realize the adjustment of the flowing direction or the air output of the air flow.

Further, the angle α between the first direction and the inner side wall of the air duct 20 is greater than 20 ° and less than 70 °.

Further, an angle α between the first direction and the inner side wall of the air duct 20 is equal to any one of 30 °, 40 °, 50 °, 55 °, and 60 °.

Further, as shown in fig. 3, an included angle α between the first direction and the inner side wall of the air duct 20 is equal to 55 °, and the included angle between the first direction and the inner side wall of the air duct 20 is set to 55 °, so that the guiding effect on the air flow can be effectively ensured, the occupied space of the flow guide ring 2 in the radial direction can be reduced, the generation cost is reduced, and the resistance to the wind outlet of the fan blade 3 can be reduced when the size of the fan blade 3 is large.

Example four:

according to an embodiment of the utility model, further: the fan housing includes: screen panel 1 and water conservancy diversion ring 2, screen panel 1 include air-out portion 10, and the air current can be via air-out portion 10 outflow wind channel 20, and at least partly setting of water conservancy diversion ring 2 is in screen panel 1 for the guide air current flows, and wherein, water conservancy diversion ring 2 includes wind channel 20, and wind channel 20 extends along the first direction, and wind channel 20 includes air intake 22 and air outlet 24.

Further, along the first direction, the air outlet 24 is disposed between the air inlet 22 and the air outlet portion 10, and an included angle α is formed between the inner side wall of the air duct 20 and the first direction.

Wherein, the area of the air inlet 22 is smaller than that of the air outlet 24.

In this embodiment, the area of the air inlet 22 is smaller than that of the air outlet 24, so that the air duct 20 is arranged to expand the air flow, thereby improving the air outlet range, improving the air outlet performance of the fan, and reducing the influence of the mesh enclosure 1 on the air outlet.

In a specific application, the area of the air inlet 22 is smaller than the area of the air outlet 24, so that the flow area of the air flowing through the air inlet 22 is smaller than the flow area of the air flowing through the air outlet 24, and the air inlet 22 and the air outlet 24 are both disposed on the air duct 20, so that the air flow can be diffused from the air inlet 22 to the air outlet 24, and further the air output is increased.

Further, the intake port 22 and the exhaust port 24 are concentrically arranged.

Example five:

as shown in fig. 3, according to an embodiment of the present invention, on the basis of the fourth embodiment, further: along the first direction, the air duct 20 is arranged to be gradually expanded so that the flow guide ring 2 is trumpet-shaped.

In this embodiment, the wind channel 20 is arranged along the first direction gradually, so that the flow guide ring 2 is trumpet-shaped, that is, from the air inlet 22 to the air outlet 24, the cross-sectional area of the wind channel 20 gradually increases along the first direction, and then the flow area of the air flow gradually increases, and when the diffusion effect is realized on the air flow, the flowing stability of the air flow can also be ensured, and then the noise generated when the air flow passes through the wind channel 20 is reduced, and the use performance of the fan is improved.

Example six:

according to an embodiment of the utility model, further: the fan housing includes: mesh enclosure 1 and water conservancy diversion ring 2, mesh enclosure 1 include air-out portion 10, and the air current can be via air-out portion 10 outflow wind channel 20, and at least partly setting of water conservancy diversion ring 2 is in mesh enclosure 1 for the guide air current flows, and wherein, water conservancy diversion ring 2 includes wind channel 20, and wind channel 20 extends along the first direction, and wind channel 20 includes air intake 22 and air outlet 24.

Further, along the first direction, the air outlet 24 is disposed between the air inlet 22 and the air outlet portion 10, and an included angle is formed between the inner side wall of the air duct 20 and the first direction.

Wherein, the area of the air outlet 24 is smaller than that of the air inlet 22.

In this embodiment, the area of the air outlet 24 is smaller than the area of the air inlet 22, that is, along the first direction, the flow area of the airflow flowing into the air duct 20 is larger than the flow area of the airflow flowing out of the air duct 20, so that the air duct 20 accelerates the airflow, and the airflow flowing out of the air outlet portion 10 flows to a farther place, thereby increasing the adjustment range of the fan to the indoor air.

Example seven:

according to an embodiment of the present invention, on the basis of the sixth embodiment, further: the air duct 20 is divergent in a second direction, wherein the second direction is opposite to the first direction.

In this embodiment, the air duct 20 is gradually enlarged along a second direction, wherein the second direction is opposite to the first direction, that is, along the flowing direction of the air flow, the cross-sectional area of the air duct 20 is gradually reduced, the flowing area of the air flow is gradually reduced under the guidance of the air duct 20, and further the flowing speed of the air flow is gradually increased, that is, under the guidance of the air duct 20, the air flow can be accelerated to flow out of the fan cover, and further the flowing distance of the air flow is increased.

Specifically, the first direction is a flow direction of the air flow, and the second direction is a reverse direction of the air flow.

In a specific application, when the area of the air inlet 22 is larger than the area of the air outlet 24, an included angle α between the inner sidewall of the air duct 20 and the second direction is larger than 0 ° and smaller than 90 °, and when the area of the air inlet 22 is smaller than the area of the air outlet 24, an included angle α between the inner sidewall of the air duct 20 and the first direction is larger than 0 ° and smaller than 90 °.

Example eight:

as shown in fig. 3, according to an embodiment of the present invention, on the basis of any of the above embodiments, further: in a cross section along the first direction, the inner side wall of the air duct 20 has a linear or curved cross section.

In this embodiment, the cross section of the inner side wall of the air duct 20 in the cross section along the first direction is linear or curved, and the air flow is guided by the inner side wall of the air duct 20 to extend linearly or curved along the inner side wall of the air duct 20.

In specific application, in the cross section along the first direction, the cross section of the inner side wall of the air duct 20 is linear, so that the manufacturing of the guide ring 2 is facilitated, the production cost is reduced, and the air flow guiding effect is improved under the condition that the cross section of the inner side wall of the air duct 20 is curved.

Example nine:

as shown in fig. 1 and fig. 2, according to an embodiment of the present invention, on the basis of any of the above embodiments, further: the guide ring 2 is circular, the mesh enclosure 1 is circular, and the radius of the guide ring 2 is smaller than that of the mesh enclosure 1.

In this embodiment, the flow guide ring 2 is circular, the mesh enclosure 1 is circular, and the radius of the flow guide ring 2 is smaller than that of the mesh enclosure 1, so that the air flow adjusting effect is ensured.

It can be understood that the radius of the deflector ring 2 is the radius of the hollow circle enclosed by the deflector ring 2.

Example ten:

according to an embodiment of the present invention, on the basis of any of the above embodiments, further: along the circumference of screen panel 1, the lateral wall of water conservancy diversion ring 2 is connected with the inside wall of screen panel 1.

In this embodiment, along the circumferential direction of screen panel 1, the lateral wall of water conservancy diversion ring 2 is connected with the inside wall of screen panel 1, and that is, water conservancy diversion ring 2 encircles along the inside wall of screen panel 1 and forms, and like this, water conservancy diversion ring 2 forms along the circumference of screen panel 1 and shelters from, has realized the differentiation of the outward appearance of fan casing. Simultaneously, along the circumference of screen panel 1, the lateral wall of water conservancy diversion ring 2 is connected with the inside wall of screen panel 1, has improved the reliability of being connected between screen panel 1 and the water conservancy diversion ring 2.

Further, the deflector ring 2 is integrally manufactured with the mesh enclosure 1.

Further, when the radius of flabellum 3 of fan is less, through the setting of water conservancy diversion ring 2, realized the regulation to the air current on the one hand, on the other hand can also make the outward appearance of fan more pleasing to the eye, avoids the user to have the great visual sensation in screen panel 1 inner space.

Example eleven:

according to an embodiment of the present invention, on the basis of any of the above embodiments, further: the side wall of the flow guide ring 2 is provided with a hollow part.

In this embodiment, be provided with the fretwork portion on the lateral wall of water conservancy diversion ring 2, the air current can be via the flow direction fan casing outside of fretwork portion, has reduced the hindrance to the air current, has promoted the air output of fan casing.

In concrete application, the air current is guided through wind channel 20 to flow by diversion ring 2, has realized the regulation to the air current, simultaneously, is provided with fretwork portion on the diversion ring 2, and then the air current can also flow out the fan casing through fretwork portion, has reduced the hindrance effect of diversion ring 2 to the air current, has promoted the air output of fan.

Example twelve:

according to an embodiment of the present invention, on the basis of the above-mentioned embodiment twelve, further: the hollowed-out portion includes at least one of a through hole and a grid.

In this embodiment, fretwork portion includes the through-hole, is provided with the through-hole on the lateral wall of water conservancy diversion ring 2 also, and the air current can be through the through-hole outflow fan casing, not only can make the air current broken up, avoids the air current directly to blow the people, can also increase the air output of fan. The fretwork portion includes the grid, is provided with the grid on the lateral wall of water conservancy diversion ring 2 also, and the air current can be through the gap outflow fan casing between the grid, has both guaranteed the air output, can avoid the air current directly to blow the people again, promotes the no wind sense effect of air current.

Example thirteen:

as shown in fig. 1 to 4, according to a second aspect of the present invention, there is also provided a fan comprising: the fan cover provided by any one of the above embodiments.

The fan provided by the second aspect of the present invention includes the fan cover provided in any of the above embodiments, and therefore, has all the advantages of the fan cover.

Example fourteen:

as shown in fig. 4, according to an embodiment of the present invention, on the basis of the above embodiment, further: the fan further comprises a housing and fan blades 3.

Specifically, the fan casing is connected with the housing, and the fan closes with the housing and encloses out and hold the chamber, and flabellum 3 sets up and is holding the intracavity, and flabellum 3's axis direction sets up along first direction, and flabellum 3 passes through wind channel 20 to the air-out portion 10 air supply.

In this embodiment, the fan further includes a housing and fan blades 3, the housing is connected to the fan housing, specifically, the housing and the fan housing enclose an accommodating cavity, the fan blades 3 are disposed in the accommodating cavity, and the airflow is driven to flow by the rotation of the fan blades 3. Wherein, the axis direction of flabellum 3 sets up along first direction, and then flabellum 3 can be to the interior air supply of wind channel 20.

In specific application, the fan further comprises an upright post, the housing is arranged on the upright post, and the fan blades 3 are movably connected with the upright post, so that the fan blades 3 can rotate along the axis.

Example fifteen:

according to an embodiment of the present invention, on the basis of any of the above embodiments, further: the ratio of the radius of the air inlet 22 of the air duct 20 to the radius of the fan blades 3 is greater than or equal to 0.8 and less than or equal to 2.

In this embodiment, if the ratio of the radius of the air inlet 22 of the air duct 20 to the radius of the fan blades 3 is too small, the air flow is not discharged favorably, and the air output of the fan is affected, and if the ratio of the radius of the air inlet 22 of the air duct 20 to the radius of the fan blades 3 is too large, the guiding effect of the guide ring 2 on the air flow is weakened. Specifically, the ratio of the radius of the air inlet 22 of the air duct 20 to the radius of the fan blades 3 is greater than or equal to 0.8 and less than or equal to 2, which not only ensures the air output, but also ensures the air flow guidance of the air duct 20.

In a specific application, when the ratio of the radius of the air inlet 22 of the air duct 20 to the radius of the fan blade 3 is greater than or equal to 0.8 and less than or equal to 1, that is, the air inlet 22 of the air duct 20 is smaller than the fan blade 3, the flow guiding effect of the flow guiding ring 2 on the air flow is improved.

The ratio of the radius of the air inlet 22 of the air duct 20 to the radius of the fan blade 3 is greater than 1, and is less than or equal to 2, that is, the fan blade 3 is less than the air inlet 22 of the air duct 20, so that the air flow can be adjusted by arranging the flow guide ring 2, and the air flow can be shielded and contained in the cavity of the fan blade 3, thereby avoiding the user from generating the visual effect of containing the cavity of the fan, and improving the aesthetic feeling of the fan.

Further, the ratio of the radius of the air inlet 22 of the air duct 20 to the radius of the fan blades 3 is greater than 0.8 and less than 2.

Specifically, the guide ring 2 is circular.

Further, as shown in fig. 3, L is equal to a difference between a radius of the mesh enclosure 1 and a radius of the air inlet 22 of the flow guide ring 2, and further, a ratio between the radius of the mesh enclosure 1 and the radius of the air inlet 22 of the flow guide ring 2 is greater than 1 and less than or equal to 1.5. Thus, the guiding effect of the deflector ring 2 on the airflow is ensured.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

1. A fan cover, comprising:

the net cover comprises an air outlet part;

the air guide ring is arranged in the mesh enclosure, at least one part of the air guide ring is arranged in the mesh enclosure, the air guide ring comprises an air channel extending along the first direction, and the air channel is used for guiding air to the air outlet part.

2. The fan cover according to claim 1,

the wind channel comprises an air inlet and an air outlet, and an included angle is formed between the inner side wall of the wind channel and the first direction.

3. The fan cover according to claim 2,

the included angle is greater than or equal to 0 DEG and less than or equal to 90 deg.

4. The fan cover according to claim 2,

the area of the air inlet is smaller than that of the air outlet.

5. The fan cover according to claim 4,

along the first direction, the wind channel is arranged in a gradually expanding mode so that the flow guide ring is trumpet-shaped.

6. The fan cover according to claim 2,

the area of the air outlet is smaller than that of the air inlet;

and the air duct is arranged along a second direction in a gradually expanding manner, and the second direction is opposite to the first direction.

7. The fan cover according to any one of claims 1 to 6,

in the section along the first direction, the section of the inner side wall of the air duct is in a linear shape or a curve shape.

8. The fan cover according to any one of claims 1 to 6,

the flow guide ring is in a ring shape, the mesh enclosure is circular, and the radius of the flow guide ring is smaller than that of the mesh enclosure.

9. The fan cover according to any one of claims 1 to 6,

along the circumference of screen panel, the lateral wall of water conservancy diversion ring with the inside wall of screen panel is connected.

10. The fan cover according to any one of claims 1 to 6,

and a hollow part is arranged on the side wall of the flow guide ring.

11. The fan cover according to claim 10,

the hollowed-out portion includes at least one of a through hole and a grid.

12. A fan, comprising:

the fan cover of any of claims 1-11.

13. The fan as claimed in claim 12, further comprising:

the fan cover is connected with the housing and encloses an accommodating cavity;

the flabellum is located hold the intracavity, the axis direction of flabellum is followed first direction sets up, the flabellum passes through the wind channel to the air-out portion air supply.

14. The fan as claimed in claim 13,

the ratio of the radius of the air inlet of the air duct to the radius of the fan blades is greater than or equal to 0.8 and less than or equal to 2.