CN113309717B

CN113309717B - Fan assembly and electronic device

Info

Publication number: CN113309717B
Application number: CN202010120003.4A
Authority: CN
Inventors: 吴启荣; 张广业
Original assignee: Mitac Computer Kunshan Co Ltd; Getac Technology Corp
Current assignee: Mitac Computer Kunshan Co Ltd; Getac Technology Corp
Priority date: 2020-02-26
Filing date: 2020-02-26
Publication date: 2023-01-20
Anticipated expiration: 2040-02-26
Also published as: CN113309717A

Abstract

A fan assembly and electronic device, the said fan assembly includes the body, fan and flow guiding wall, the body has air intake and air outlet, the fan is disposed in body and located between air intake and air outlet, the fan includes the fan frame, the fan frame has first sidewall and first air inlet, the first air inlet is formed on the first sidewall and the position is relative to air intake, the flow guiding wall is disposed on the periphery of the air intake, and the flow guiding wall extends towards the first sidewall; the electronic device comprises the electronic component, the shell, the fan and the flow guide wall, wherein the electronic component is arranged in the shell, the fan is adjacent to the electronic component, and air is directly guided into the fan, so that the air which does not enter the fan and is in the shell is greatly reduced, the heat dissipation efficiency of the fan component is improved, and the heat energy of the electronic device is effectively dissipated. The fan assembly and the electronic device can improve the heat dissipation efficiency of the fan assembly and effectively dissipate the heat energy of the electronic device.

Description

Fan assembly and electronic device

Technical Field

The invention relates to a fan assembly and an electronic device.

Background

Electronic devices such as desktop computers, monitors, tablet computers, mobile phones, etc. generate a large amount of heat energy from electronic components such as display panels, wireless communication modules, batteries, etc. inside the electronic devices during operation. In order to prevent the electronic device from working unstably due to heat energy, a heat dissipation assembly is usually disposed inside the electronic device to effectively dissipate heat and stabilize the electronic device. Most of the current mainstream heat dissipation designs are active designs equipped with heat pipes, heat dissipation fins and moving parts such as fans, and such designs often suffer from several problems, such as fan noise, and external environments such as dust, water, vibration, falling, static pressure, etc. factors directly affecting the usability of the fans, and in terms of military products, the influence of the factors is rather bad. In addition, in recent years, products are gradually becoming thinner and lighter, and are relatively directly compressed into the fan space, which not only affects the heat dissipation performance, but also challenges the fan for static pressure related tests.

The background section is provided to aid in understanding the present disclosure, and thus, it is intended that all matter contained in the background section or disclosed herein may not necessarily constitute prior art to the same extent as if it were known to one of ordinary skill in the art. Furthermore, the statements in the "background" section do not represent that matter or the problems identified as being "prior to" or as being "prior to" the present disclosure, but rather are merely representative of the fact that those skilled in the art will recognize or appreciate prior to filing the present disclosure.

Disclosure of Invention

The invention provides a fan assembly with good heat dissipation efficiency.

The invention provides an electronic device, which can effectively dissipate heat energy.

Other objects and advantages of the present invention will be further understood from the technical features disclosed in the present invention.

To achieve one or a part of or all of the above objectives or other objectives, an embodiment of the present invention provides a fan assembly including a housing, a fan, and a flow guiding wall. The shell is provided with an air inlet and an air outlet. The fan is arranged in the shell and located between the air inlet and the air outlet, the fan comprises a fan frame, the fan frame is provided with a first side wall and a first air inlet, and the first air inlet is formed in the first side wall and is opposite to the air inlet. The flow guide wall is arranged at the periphery of the air inlet and extends towards the first side wall.

To achieve one or a part of or all of the above objectives or other objectives, an electronic device according to another embodiment of the present invention includes a housing, an electronic component, a fan, and a flow guiding wall. The shell is provided with an air inlet and an air outlet. The electronic assembly is disposed within the housing. The fan is arranged in the shell, is adjacent to the electronic assembly and is positioned between the air inlet and the air outlet, and comprises a fan frame, wherein the fan frame is provided with a first side wall and a first air inlet, and the first air inlet is formed on the first side wall and is opposite to the air inlet. The flow guide wall is arranged at the periphery of the air inlet and extends towards the first side wall.

In the fan assembly and the electronic device of the embodiment of the invention, because the fan is arranged in the shell and is positioned between the air inlet and the air outlet, and the flow guide wall is arranged at the periphery of the air inlet of the shell and extends towards the first side wall of the fan frame, air can be directly guided into the fan for heat dissipation, so that the air which does not enter the fan and is in the shell is greatly reduced, the heat dissipation efficiency of the fan assembly is improved, and the heat energy of the electronic device can be effectively dissipated.

In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is an external view of a fan assembly according to an embodiment of the invention.

Fig. 2 is a schematic top view of the fan assembly of fig. 1.

Fig. 3 isbase:Sub>A schematic sectional view taken along linebase:Sub>A-base:Sub>A in fig. 2.

Fig. 4 is an enlarged schematic view of a region B in fig. 3.

Fig. 5 is a schematic diagram of a fan of the fan assembly according to an embodiment of the invention.

Fig. 6 is a schematic diagram of an electronic device according to an embodiment of the invention.

Detailed Description

The foregoing and other technical and other features and advantages of the invention will be apparent from the following more particular description of a preferred embodiment, as illustrated in the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are referred to only in the direction of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.

Fig. 1 is an external view of a fan assembly according to an embodiment of the invention. Fig. 2 is a top plan view of the fan assembly of fig. 1. Fig. 3 isbase:Sub>A schematic sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2. Fig. 4 is an enlarged schematic view of a region B in fig. 3. Referring to fig. 1 to 4, the fan assembly 100 of the present embodiment includes a housing 110, a fan 120, and a baffle 130. The housing 110 has an intake opening 111 and an outlet opening 112. The fan 120 is disposed in the housing 110 and located between the air inlet 111 and the air outlet 112, the fan 120 includes a fan frame 121, the fan frame 121 has a first sidewall 1211 and a first air inlet 1212, and the first air inlet 1212 is formed on the first sidewall 1211 and located opposite to the air inlet 111. The guide wall 130 is disposed at a periphery of the air inlet 111, and the guide wall 130 extends toward the first sidewall 1211. The air inlet 111 can allow air F outside the housing 110 to enter the housing 110; when the air F passes through the flow guiding wall 130, the air F is guided to flow toward the first air inlet 1212, and then enters the fan 120 through the first air inlet 1212, and finally exits the fan assembly 100 through the air outlet 112.

In the present embodiment, the opening dimension D1 of the first air inlet 1212 is smaller than the opening dimension D2 of the air inlet 111. By the design that the opening dimension D1 of the first air inlet 1212 is smaller than the opening dimension D2 of the air inlet 111, the air F can be compressed and concentrated when passing through the air inlet 111 and the first air inlet 1212. In addition, the flow guide wall 130 and the first sidewall 1211 are spaced apart from each other; further, the flow guiding wall 130 has a first end 131 and a second end 132 opposite to each other, the first end 131 is connected to the periphery of the air inlet 111, the second end 132 is located outside the first air inlet 1212 and opposite to the first side wall 1211, and the second end 132 and the first side wall 1211 are spaced apart from each other; in the embodiment, the second end 132 of the flow guide wall 130 and the first side wall 1211 are spaced apart from each other by about 0.5mm to 1mm, that is, the spacing distance L1 between the second end 132 of the flow guide wall 130 and the first side wall 1211 is between 0.5mm to 1mm, but the invention is not limited thereto. By controlling the separation distance L1 between the flow guide wall 130 and the first side wall 1211, the air F flowing into the housing 110 from between the flow guide wall 130 and the first side wall 1211 without entering into the fan 120 can be avoided, and most of the air F entering the air inlet 111 can be ensured to enter into the fan 120 from the first air inlet 1212.

In this embodiment, the fan 120 may further include an impeller 122, the impeller 122 is rotatably disposed on the fan frame 121, and the impeller 122 is opposite to the first air inlet 1212. The rotation of the fan blades drives the air F between the air inlet 111 and the air outlet 112 to flow, so that the air F outside the housing 110 can enter the fan 120 through the air inlet 111, the flow guiding wall 130 and the first air inlet 1212, and further flow out of the housing 110 through the air outlet 112.

In this embodiment, the housing 110 may further include a partition 113, the partition 113 is disposed in the air inlet 111 and adjacent to the flow guiding wall 130, the partition 113 divides the air inlet 111 into a plurality of through holes 1111, and an opening size of each through hole 1111 is smaller than an opening size of the air inlet 111. When the fan blade rotates, the air F outside the housing 110 can enter the housing 110 through the through hole 1111, and further enter the fan 120 through the first air inlet 1212, and finally leave the housing 110 through the air outlet 112. In the embodiment, the separator 113 is a mesh, but the invention is not limited thereto; in other embodiments, the divider 113 may also be in the shape of a fence. Further, in the present embodiment, the spaced distance L2 between the partition 113 and the first sidewall 1211 is greater than the spaced distance L1 between the flow guide wall 130 and the first sidewall 1211. Through the partition 113, when the air F outside the housing 110 flows into the housing 110, objects such as dust and impurities entrained in the air F can be blocked outside the housing 110 by the partition 113 and cannot enter the housing 110, so as to prevent the objects such as dust and impurities from being accumulated on the fan 120 or other components in the housing 110, and keep the components in the housing 110 clean and normally operating.

In addition, the fan frame 121 may further include a base 1213 and an exhaust outlet 1214, the base 1213 is connected to the first sidewall 1211, the exhaust outlet 1214 is formed on the base 1213, and the base 1213 and the air inlet 111 are located on opposite sides of the first sidewall 1211. In this embodiment, the base 1213 may further include a second sidewall 1215, an annular sidewall 1216, and a second air inlet 1217, wherein the annular sidewall 1216 is connected between the second sidewall 1215 and the first sidewall 1211, the second air inlet 1217 is formed on the second sidewall 1215, and the air outlet 1214 is formed on the annular sidewall 1216. Further, in the embodiment, the fan 120 is a centrifugal fan, but the invention is not limited thereto. The material of the fan frame 121 may be, for example, metal, plastic, or composite material, and the materials of the first sidewall 1211, the second sidewall 1215, and the annular sidewall 1216 may be the same material, but may also be different materials. Alternatively, the first sidewall 1211, the second sidewall 1215 and the annular sidewall 1216 may be integrally formed, or may be assembled from separate members.

In addition, the impeller 122 may include a central portion 1221 and a plurality of blades 1222, the central portion 1221 is pivotally connected to the second side wall 1215 of the base 1213 of the fan frame 121, and the blades 1222 extend outward around the central portion 1221, and further, the blades 1222 may extend outward around the central portion 1221 along a straight line or an arc line, that is, the blades 1222 may extend around the central portion 1221 along a straight line or an arc line in a direction of the annular side wall 1216 of the fan frame 121. In addition, the material of impeller 122 may be metal, plastic or composite material, the material of central portion 1221 and blade 1222 may be the same or different, and the material of central portion 1221 and blade 1222 is not limited in the present invention. The central portion 1221 and the blades 1222 may be integrally formed, or may be assembled from two separate members. Further, the impeller 122 may be rotatably disposed on the fan frame 121 through a shaft 123, a central portion 1221 of the impeller 122 is pivotally connected to the second side wall 1215 of the base 1213 of the fan frame 121 through the shaft 123, the shaft 123 is, for example, a driving shaft of the motor 124, and the motor 124 may be assembled on the second side wall 1215.

In the fan assembly 100 of the present embodiment, the casing 110 may be a casing of an electronic device such as a display screen, a notebook computer, a tablet computer, etc., and a heat generating device such as a battery, a display panel, a wireless communication assembly, etc. may be disposed on the casing 110 (i.e., inside or outside the casing 110). When the fan assembly 100 is in operation, air F outside the housing 110 can enter the housing 110 through the air inlet 111; after the air F enters the casing 110, the air F entering the casing 110 is guided to flow in the direction of the first air inlet 1212 by the guide wall 130, and enters the fan 120 through the first air inlet 1212; finally, the air F entering the fan 120 can bring the heat energy generated by the heating device to the air outlet 112, so that the heat energy is discharged out of the casing 110, thereby achieving the heat dissipation effect. That is to say, the fan assembly 100 of the present embodiment can effectively guide the air F entering the housing 110 to the first air inlet 1212 of the fan 120 through the arrangement of the flow guide wall 130, so as to improve the heat dissipation efficiency of the fan 120. In addition, since the flow guiding wall 130 can effectively guide the air F entering the casing 110 into the fan 120 for heat dissipation, the amount of the air F entering the casing 110 but not entering the fan 120 can be greatly reduced, so that the noise generated by the air F not entering the fan 120 flowing in the casing 110 can be greatly reduced. In addition, when the fan 120 is subjected to the static pressure test, the flow guiding wall 130 may temporarily abut against the first sidewall 1211 of the fan frame 121 downward, so as to prevent the casing 110 from directly pressing against the fan blade 1222 of the fan 120 downward to damage the fan blade 1222.

Fig. 5 is a cross-sectional view of a fan of the fan assembly according to an embodiment of the invention. Referring to fig. 5, in the fan assembly 100a of the present embodiment, the base 1213a of the fan frame 121a of the fan 120a includes a second side wall 1215a and a circumferential side wall 1216a, and the exhaust port 1214a is disposed on the second side wall 1215 a. In the present embodiment, the fan 120a is an axial fan, but the invention is not limited thereto.

Fig. 6 is a schematic diagram of an electronic device according to an embodiment of the invention. Referring to fig. 3 and 6, the electronic device 200 of the present embodiment includes the fan assembly 100 and the electronic assembly 210. Further, the electronic device 200 of the present embodiment includes a housing 110, an electronic component 210, a fan 120, and a flow guiding wall 130. The housing 110 has an intake opening 111 and an outlet opening 112. The electronic component 210 is disposed on the housing 110. The fan 120 is disposed in the housing 110 and adjacent to the electronic component 210, and the fan 120 is located between the air inlet 111 and the air outlet 112, the fan 120 includes a fan frame 121, the fan frame 121 has a first sidewall 1211 and a first air inlet 1212, and the first air inlet 1212 is formed on the first sidewall 1211 and is located opposite to the air inlet 111. The guide wall 130 is disposed at a periphery of the air inlet 111, and the guide wall 130 extends toward the first sidewall 1211. The electronic device 200 of the embodiment is exemplified by a display screen, and the electronic component 210 is exemplified by a display panel disposed on the outer surface of the housing 110, but the invention is not limited thereto; in other embodiments, the electronic device 200 may be, for example, a notebook computer, a tablet computer, etc., the electronic component 210 may be, for example, a heat generating device such as a battery, a wireless communication component, etc., and the heat generating device may be disposed inside the housing 110. Although the electronic device 200 of the present embodiment is exemplified by the fan assembly 100 shown in fig. 1 to 3, the fan assembly 100 of the electronic device of the present embodiment may be replaced by the fan assembly 100a of any one of the embodiments.

In summary, in the fan assembly and the electronic device of the embodiments of the invention, because the fan is disposed in the casing and located between the air inlet and the air outlet, and the flow guiding wall is disposed at the periphery of the air inlet of the casing and extends toward the first sidewall of the fan frame, the air can be directly guided into the fan for heat dissipation, so that the air that does not enter the fan and is inside the casing is greatly reduced, thereby improving the heat dissipation efficiency of the fan assembly and reducing the noise generated by the air flowing in the space inside the casing and outside the fan. In addition, when the static pressure test is carried out, the flow guide wall can temporarily abut against the first side wall of the fan frame, so that the shell cannot abut against the fan blades of the fan, and the fan blades are prevented from being damaged. Therefore, the fan assembly and the electronic device of the embodiment of the invention have the advantages of good heat dissipation efficiency, noise reduction, reduction of the risk of damage of fan blades in a static pressure test and the like.

However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made in the claims and the description of the present invention are still within the scope of the present invention. Moreover, not all objects, advantages, or features of the disclosure are necessarily to be achieved in any one embodiment or claimed herein. In addition, the abstract and the title of the invention are provided for assisting the search of patent documents and are not intended to limit the scope of the invention. In addition, the terms "first," "second," and the like in the description and the claims are used for naming elements (elements) or distinguishing between different embodiments or ranges, and are not intended to limit the upper or lower limit on the number of elements.

Claims

1. A fan assembly, comprising:

a shell with an air inlet and an air outlet;

a fan disposed in the housing and located between the air inlet and the air outlet, the fan including a fan frame, the fan frame having a first sidewall and a first air inlet, the first air inlet being formed on the first sidewall and located opposite to the air inlet; and

the guide wall is arranged on the shell and positioned at the periphery of the air inlet, the guide wall and the first side wall are mutually spaced, and the guide wall extends towards the first side wall;

wherein, the opening size of the first air inlet is smaller than that of the air inlet.

2. The fan assembly as claimed in claim 1, wherein the distance between the guide wall and the first sidewall is between 0.5mm and 1 mm.

3. The fan assembly as claimed in claim 1, further comprising an impeller rotatably disposed on the fan frame and opposite to the first air inlet.

4. The fan assembly as claimed in claim 1, wherein the housing has a partition disposed in the air inlet and adjacent to the flow guide wall, the partition dividing the air inlet into a plurality of through holes.

5. The fan assembly of claim 4 wherein a distance between the divider and the first sidewall is greater than a distance between the flow guide wall and the first sidewall.

6. The fan assembly as claimed in claim 1, wherein the fan frame further includes a base connected to a bottom of the first sidewall and an exhaust opening formed on the base, and the base and the intake opening are located at opposite sides of the first sidewall.

7. The fan assembly as claimed in claim 6, wherein the base includes a second sidewall, a circular sidewall and a second air inlet, the circular sidewall is connected between the second sidewall and the first sidewall, the second air inlet is formed on the second sidewall, and the air outlet is formed on the circular sidewall.

8. The fan assembly as claimed in claim 6, wherein the base includes a second sidewall and an annular sidewall connected between the second sidewall and the first sidewall, the exhaust outlet being formed on the second sidewall.

9. An electronic device, comprising:

a shell, which is provided with an air inlet and an air outlet;

an electronic assembly disposed in the housing;

a fan disposed in the housing, adjacent to the electronic component, and between the air inlet and the air outlet, the fan including a fan frame having a first sidewall and a first air inlet, the first air inlet being formed on the first sidewall and located opposite to the air inlet; and