CN214036268U

CN214036268U - Fan flow guiding structure

Info

Publication number: CN214036268U
Application number: CN202022769906.3U
Authority: CN
Inventors: 孙颂伟; 李名哲
Original assignee: Asia Vital Components Co Ltd
Current assignee: Asia Vital Components Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-08-24
Anticipated expiration: 2030-11-25

Abstract

The utility model provides a fan water conservancy diversion structure, including a centrifugal impeller and a casing, this casing includes an upper cover and a base, an impeller space and a runner are defined between this upper cover and this base, this centrifugal impeller of this impeller space holding, this runner intercommunication this impeller space and a lateral air outlet, be equipped with this lateral air outlet of a tongue neighbouring in this runner, the opposite of this tongue defines a benefit wind region, this upper cover and/or this base set up into this benefit wind region of air gill portion intercommunication, in order to attract outside air current to get into this regional fan flow that increases of benefit wind.

Description

Fan flow guiding structure

Technical Field

The utility model relates to a fan field especially relates to a centrifugal fan water conservancy diversion structure.

Background

The thinner and more advanced design of the existing electronic device or handheld device such as a mobile phone or a tablet computer makes the internal space of the device narrower to accommodate more electronic components to generate more heat, in order to more effectively release the heat in the handheld device, a centrifugal fan is disposed inside, such as a conventional centrifugal fan 30 shown in fig. 6A and 6B, which has a flow channel 31 therein communicating with a lateral air outlet 32 and a fan wheel space 33, a centrifugal fan wheel 34 disposed in the fan wheel space 33, a tongue 35 is disposed on a side of the flow channel 31 adjacent to the lateral outlet 32, so that when the fluid flows out from the lateral outlet 32 through the flow channel 31, causing a large portion of the fluid to flow out of the opposite area 37 of the tongue 35, causing the opposite area 37 of the tongue 35 to have a faster flow rate and a lower pressure, the tongue 35 causes uneven high and low pressure and fast flow rate of the fluid at the lateral outlet 32, which affects the heat dissipation efficiency.

Therefore, how to solve the above problems and disadvantages is a direction in which the present inventors and related manufacturers in the industry need to research and improve.

SUMMERY OF THE UTILITY MODEL

To solve the above problems, an object of the present invention is to provide a fan flow guiding structure for increasing fan flow in the same fan volume.

Another object of the present invention is to provide a fan flow guiding structure for sucking the outside air into the air supplement area according to the flow direction of the air in the fan.

To achieve the above object, the present invention provides a fan flow guiding structure, which comprises: a centrifugal impeller; a casing, including an upper cover connected with a base, a side wall formed between the upper cover and the base, a lateral air outlet arranged at the side wall, a fan wheel space and a flow channel defined between the upper cover and the base and the side wall, the fan wheel space accommodating the centrifugal fan wheel, the flow channel communicating the fan wheel space and the lateral air outlet; wherein a tongue portion is arranged in the flow channel and is adjacent to the lateral air outlet, an air supplement area is defined on the opposite side of the tongue portion and is adjacent to the lateral air outlet, and an upper air gill portion is arranged on the upper cover corresponding to the air supplement area and is communicated with the air supplement area.

The upper air inlet gill part comprises at least one first guide blade plate and at least one first air guide hole, the first guide blade plate is bent towards the air supplementing area from the upper cover in an inclined mode and is provided with a first free end facing the lateral air outlet, and the at least one first air guide hole is formed in the upper surface of the first guide blade plate and penetrates through the upper cover towards the lateral air outlet in an inclined mode and is communicated with the air supplementing area.

The base is provided with a lower air inlet gill part corresponding to the air supplement area and communicated with the air supplement area.

The lower air inlet gill part comprises at least one second guide blade plate and at least one second air guide hole, the second guide blade plate is bent from the base to the air supplementing area in an inclined mode and is provided with a second free end facing the lateral air outlet, and the at least one second air guide hole is formed in the upper surface of the second guide blade plate and penetrates through the upper cover in an inclined mode towards the lateral air outlet and is communicated with the air supplementing area.

The lower air intake gill part corresponds to the upper air intake gill part of the upper cover.

The upper cover is provided with an upper air inlet, the base is provided with a lower air inlet, and the upper air inlet and the lower air inlet are communicated with the fan wheel space.

The shell is provided with a lateral air inlet communicated with the fan wheel space.

The tongue portion protrudes from the side wall.

The air supplement area is a low-pressure and high-flow-speed area.

The utility model discloses rely on foretell structure can increase fan flow in the same fan volume.

Drawings

FIG. 1 is a perspective exploded view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a schematic view taken along line A-A of FIG. 2;

fig. 4A to 4C are schematic views illustrating the operation of the present invention;

FIG. 5 is a schematic view of different air inlets of the present invention;

fig. 6A and 6B are schematic diagrams of a structure and a flow field of a conventional centrifugal fan.

Description of reference numerals: a centrifugal fan wheel 10; a hub 101; a blade 102; a housing 20; an upper cover 21; an upper inlet port 211; an upper intake gill portion 212; a first guide vane 2121; a first free end 21211; a first air guide hole 2122; a base 22; a lower air inlet 221; the lower intake gill portion 222; second guide vanes 2221; a second free end 22211; a second gas vent 2222; a side wall 23; the impeller space 24; a flow channel 25; a lateral air outlet 26; a tongue portion 27; a wind-supplementing zone 28; a lateral air inlet 29; a centrifugal fan 30; a flow passage 31; a lateral air outlet 32; the impeller space 33; a centrifugal fan wheel 34; a tongue portion 35; opposite region 37.

Detailed Description

The above objects, together with the structure and functional characteristics of the invention, will be best understood from the following description of the preferred embodiments when read in connection with the accompanying drawings.

The utility model provides a fan flow guiding structure suitable for the field of centrifugal fans, please refer to fig. 1, which is a three-dimensional exploded schematic view of the present invention; fig. 2 is a schematic view of the three-dimensional assembly of the present invention. As shown in the drawings, the present invention includes a centrifugal impeller 10 and a casing 20, the centrifugal impeller 10 has a hub 101 and a plurality of blades 102, the casing 20 includes an upper cover 21 axially connected to a base 22, a sidewall 23 formed between the upper cover 21 and the periphery of the base 22, and a lateral air outlet 26 formed in the sidewall 23. The side wall 23 is shown extending from the base 22 toward the upper cover 21, but is not limited thereto, and the side wall 23 may extend from the upper cover 21 toward the base 22 or from the upper cover 21 and the base 22 toward each other.

A fan space 24 and a flow channel 25 are defined between the cover 21 and the base 22 and the side wall 23, the fan space 24 accommodates the centrifugal fan wheel 10, and the centrifugal fan wheel 10 is shown in the figure to be located at the approximate center of the housing 20, but is not limited thereto, and in other alternative implementations, the centrifugal fan wheel 10 is offset from the center of the housing 20. The upper cover 21 has an upper inlet 211, the base 22 has a lower inlet 221, and the upper inlet 211 and the lower inlet 221 communicate with the impeller space 24.

The flow channel 25 connects the fan wheel space 24 and the lateral air outlet 26, and a tongue portion 27 is disposed adjacent (adjoining) the lateral air outlet 26 in the flow channel 25, and the opposite side of the tongue portion 27 is adjacent (adjoining) the lateral air outlet 26 to define an air supplement region 28, in the figure, the tongue portion 27 and the air supplement region 28 are respectively located at the left and right sides adjacent to the lateral air outlet 26, and the tongue portion 27 protrudes from the sidewall 23, and the air supplement region 28 is a low pressure and high flow velocity region.

In addition, this embodiment shows that the upper cover 21 is provided with an upper air intake fin 212 corresponding to the air supplement region 28, the base 22 is provided with a lower air intake fin 222 corresponding to the upper air intake fin 212 corresponding to the air supplement region 28, and the upper air intake fin 212 and the lower air intake fin 222 communicate with the air supplement region 28. However, the present invention is not limited thereto, and in other embodiments, only the upper intake gill portion 212 of the upper cover 21 or the lower intake gill portion 222 of the base 22 may be provided, or a side intake gill portion (not shown) may be provided on a side wall of the air supplement region.

Please continue to refer to fig. 3, which is a schematic view of the section line a-a in fig. 2. As shown in fig. 1 and fig. 2, the upper air gill 212 includes at least one first guide vane 2121 and at least one first air hole 2122, two first guide vanes 2121 and two first air holes 2122 are shown in the figure, the first guide vanes 2121 extend obliquely from the upper cover 21 to the air supply region 28 and have a first free end 21211 facing the lateral air outlet 26, and the first air holes 2122 are adjacent to the first guide vanes 2121 and extend obliquely through the upper cover 21 towards the lateral air outlet 26 and communicate with the air supply region 28. The lower intake gill portion 222 includes at least one second guide vane 2221 and at least one second air vent 2222, two second guide vanes 2221 and two second air vents 2222 are shown in the figure, the second guide vane 2221 extends obliquely from the base 22 to the air supplement region 28 and has a second free end 22211 facing the lateral air outlet 26, and the at least one second air vent 2222 is adjacent to the second guide vane 2221 and extends obliquely through the base 22 and communicates with the air supplement region 28 toward the lateral air outlet 26.

Please refer to fig. 4A to 4C for the operation of the present invention, wherein fig. 4A is a schematic view of the top cover hidden for the convenience of illustration, fig. 4B is a schematic view of the section line B-B of fig. 2, and fig. 4C is a schematic view of the section line a-a of fig. 2. As shown in these figures, when the centrifugal fan 10 is operated, in addition to the air flow sucked from the upper air inlet 211 of the upper cover 21 and the lower air inlet 221 of the base 22 to the side air outlet 26, the make-up air outside the housing 20 is also introduced into the air supplement region 28 from the upper air gill portion 212 and the lower air gill portion 222 and then flows out to the side air outlet 26. Because the upper gill 212 and the lower gill 222 have an oblique direction that is the same as the direction of the airflow. That is, the first guide vanes 2121 and the first air holes 2122 and the second guide vanes 2221 and 2222 are inclined toward the lateral air outlets 26, so that the make-up air can be smoothly guided through the first air holes 2122 and the second air holes 2222 into the air make-up area 28 and then flow out of the lateral air outlets 26. Thus, the low pressure in the air supply area 28 is filled, thereby increasing the overall fan flow.

Please refer to fig. 5, which is a schematic diagram of different air inlets according to the present invention. Although the upper cover 21 is provided with the upper inlet 211, the base 22 is provided with the lower inlet 221 (as shown in fig. 1, 2 and 4B). But not limited thereto, as shown in the present figure, in another implementation, the upper cover 21 and the base 22 are not provided with an air inlet, but a lateral air inlet 29 is additionally provided on the side wall 23 of the housing 20, the lateral air inlet 29 is communicated with the fan wheel space 24, in the present implementation, the position relationship of the lateral air inlet 29 on the opposite surface of the lateral air outlet 26 is shown, but is not limited thereto, and the two may also be in a relative position with an included angle of 90 degrees.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A fan flow guiding structure is characterized by comprising:

a centrifugal impeller;

a casing, including an upper cover connected with a base, a side wall formed between the upper cover and the base, a lateral air outlet arranged at the side wall, a fan wheel space and a flow channel defined between the upper cover and the base and the side wall, the fan wheel space accommodating the centrifugal fan wheel, the flow channel communicating the fan wheel space and the lateral air outlet;

the upper cover is provided with an upper air gill part corresponding to the air supplement area, and the upper air gill part is communicated with the air supplement area.

2. The fan guide structure of claim 1, wherein: the upper intake gill portion includes at least one first guide vane plate and at least one first air guide hole, the first guide vane plate extends obliquely from the upper cover to the air supplement region and has a first free end facing the lateral air outlet, and the at least one first air guide hole is adjacent to the first guide vane plate and obliquely penetrates through the upper cover towards the lateral air outlet and is communicated with the air supplement region.

3. The fan guide structure of claim 1 or 2, wherein: the base is provided with a lower air inlet gill part corresponding to the air supplement area, and the lower air inlet gill part is communicated with the air supplement area.

4. The fan guide structure of claim 3, wherein: the lower air intake gill portion comprises at least one second guide blade plate and at least one second air guide hole, the second guide blade plate extends from the base to the air supplement area in an inclined mode and is provided with a second free end, the second free end faces the lateral air outlet, and the at least one second air guide hole is adjacent to the second guide blade plate, penetrates through the base towards the lateral air outlet in an inclined mode and is communicated with the air supplement area.

5. The fan guide structure of claim 3, wherein: the lower air inlet gill part corresponds to the upper air inlet gill part of the upper cover.

6. The fan guide structure of claim 1, wherein: the upper cover is provided with an upper air inlet, the base is provided with a lower air inlet, and the upper air inlet and the lower air inlet are communicated with the fan wheel space.

7. The fan guide structure of claim 1, wherein: the shell is provided with a lateral air inlet which is positioned on the lateral wall and communicated with the impeller space.

8. The fan guide structure of claim 1, wherein: the tongue portion protrudes from the side wall.

9. The fan guide structure as recited in any one of claims 1, 2, 4 to 8, wherein: the air supplement region is a low pressure and high flow rate region.

10. The fan guide structure of claim 3, wherein: the air supplement region is a low pressure and high flow rate region.