TWI877065B - Fan device - Google Patents

Abstract

A fan device includes a fan and a blocking assembly. The fan includes a fan frame and a fan blade. The fan frame has an airflow channel. The fan blade is rotatably disposed on the fan frame, and is located in the air flow channel. The fan blade is configured to generate airflow. The blocking assembly includes a front frame, a plurality of blocking members and a rotating member. The front frame is mounted on the fan frame. The blocking members are rotatably disposed on the front frame. The front frame surrounds at least a part of the blocking members. The blocking members have a plurality of first pushing portions. The rotating member is rotatably disposed on the front frame, and has a plurality of second pushing portions. The first pushing portions are pushed against the second pushing portions via the rotation of the rotating member, respectively. Accordingly, the blocking members are opened to allow the airflow generated by the fan blade to flow out from the airflow channel through the flow blocking assembly, or the blocking members are closed to block the airflow channel.

Description

Fan device

The present invention relates to a fan device, in particular to a fan device provided with a baffle assembly.

With the rapid development of technology, the computing performance of electronic components has also increased significantly, and at the same time, a large amount of heat is generated. In order to ensure that electronic components are not damaged by high heat, fans need to be installed on the server to dissipate the excessive heat of electronic components so that the electronic components can operate within a certain operating temperature range.

There are usually multiple fans installed in the server. When the airflow generated by these fans flows through the electronic components, it will take away the heat generated by the electronic components to form hot air, and then flow out of the server. When some fans are not in operation, the hot air will flow back through the non-operating fans and will have difficulty flowing out of the server. In response to this, manufacturers will install baffle components on the fans to prevent the hot air from flowing back. Generally speaking, the baffle component is assembled by inserting the opposite ends of its shaft into the front frame of the fan. However, during assembly, it is easy to cause the shaft to break due to the need to bend the shaft so that the opposite ends can be inserted into the front frame. In addition, when the current fan is not in operation, the baffle plate of the baffle component will naturally droop due to gravity to block the airflow channel of the fan. When the fan is running, the airflow generated by the fan will push the air baffle open. However, when the air baffle is pushed by the airflow and swings quickly, it is easy for the shaft to rub against the front frame and cause the shaft to break. Therefore, how to prevent the air baffle from breaking when it is assembled and when it is pushed by the airflow is one of the problems that researchers should solve.

The present invention provides a fan device, whereby the wind shielding member causes the shaft to break when being assembled and pushed by airflow.

The fan device disclosed in one embodiment of the present invention includes a fan and a baffle assembly. The fan includes a fan frame and a fan blade. The fan frame has an airflow channel. The fan blade is rotatably disposed on the fan frame and is located in the airflow channel. The fan blade is used to generate airflow. The baffle assembly includes a front frame, a plurality of air baffles and a rotating member. The front frame is mounted on the fan frame. One end of these air baffles is rotatably disposed on the front frame. The front frame surrounds at least part of these air baffles. These air baffles have a plurality of first push portions. The rotating member is rotatably disposed on the front frame and has a plurality of second push portions. Through the rotation of the rotating member, the first push portions are pushed against the second push portions respectively, so that the wind shielding members are opened to allow the airflow generated by the fan blades to flow out from the airflow channel through the wind shielding assembly, or the wind shielding members are closed to shield the airflow channel.

According to the fan device of the above embodiment, since only one end of the air shielding pieces can be rotatably inserted into the front frame, there is no need to bend the air shielding pieces, and the air shielding pieces can be directly inserted into the front frame. In this way, the air shielding pieces can be prevented from being broken during assembly. In addition, since the air shielding assembly is provided with a rotating piece, the first push-pull parts of the air shielding pieces are respectively pushed against the second push-pull parts of the rotating piece to open or close the air shielding pieces, and the friction between the air shielding pieces and the front frame is reduced, so the air shielding plates can be prevented from being broken when pushed by the airflow.

The above description of the content of the present invention and the following description of the implementation method are used to demonstrate and explain the principle of the present invention and provide a further explanation of the scope of the patent application of the present invention.

Please refer to Figures 1 to 4. Figure 1 is a three-dimensional schematic diagram of a fan device according to the first embodiment of the present invention. Figure 2 is an exploded schematic diagram of the fan device of Figure 1. Figure 3 is an exploded schematic diagram of the fan device of Figure 1 from another viewing angle. Figure 4 is a partially enlarged three-dimensional cross-sectional schematic diagram of the fan device of Figure 1.

The fan device 10 of this embodiment is used to be installed in a housing (not shown) and includes a fan 11 and a baffle assembly 12. The fan 11 includes a fan frame 111 and a fan blade 112. The fan frame 111 has an air flow channel 1121. The fan blade 112 is rotatably disposed on the fan frame 111 and located in the air flow channel 1121. The fan blade 112 is used to generate airflow.

The air shielding assembly 12 includes a front frame 121, a plurality of air shielding members 122, a rotating member 123, a reset member 124 and a fastener 125. The front frame 121 is mounted on the fan frame 111. The air shielding plates 1223 are rotatably disposed on the front frame 121. The front frame 121 surrounds at least a portion of the air shielding members 122. The air shielding members 122 have a plurality of first abutting portions 1221. Specifically, each of the air shielding members 122 includes a rotating shaft 1222 and an air shielding plate 1223. The air shielding plate 1223 and the first abutting portions 1221 are disposed on the rotating shaft 1222. The first abutting portions 1221 are, for example, abutting protrusions. The wind shield 1223 is, for example, in the form of a flat plate. The front frame 121 has a through hole 1211. One end of the rotating shaft 1222 is rotatably disposed in the through hole 1211.

The rotating member 123 is rotatably disposed on the front frame 121 and has a plurality of second abutting portions 1231. These second abutting portions 1231 are, for example, abutting bumps. Through the rotation of the rotating member 123, these first abutting portions 1221 can be pushed against these second abutting portions 1231 respectively, so that these air shielding members 122 are opened to allow the airflow generated by the fan blades 112 to flow out from the airflow channel 1121 through the airflow shielding assembly 12, or these air shielding members 122 are closed to shield the airflow channel 1121.

The reset member 124 is disposed on the rotating member 123. When the rotating member 123 rotates and the first abutting portions 1221 are respectively abutted against the second abutting portions 1231, the reset member 124 is used to reset the rotating member 123. The rotating member 123 and the reset member 124 are fixed to the front frame 121 through the fastener 125. The reset member 124 is, for example, a torsion spring, and the fastener 125 is, for example, a screw.

In this embodiment, since only one end of the rotating shaft 1222 of the air shield 122 is rotatably inserted into the through hole 1211 of the front frame 121, the rotating shaft 1222 does not need to be bent, but can be directly inserted into the through hole 1211 of the front frame 121. In this way, the air shield 122 can be prevented from breaking the rotating shaft 1222 during assembly. In addition, since the air shielding assembly 12 is provided with a rotating member 123 and a reset member 124, the first pushing portion 1221 of the air shielding member 122 and the second pushing portion 1231 of the rotating member 123 push against each other to open or close the air shielding member 122, and the reset member 124 absorbs the swinging force of the air shielding member 122 to reduce the friction between the rotating shaft 1222 and the through hole 1211, thereby preventing the air shielding plate 1223 from breaking the rotating shaft 1222 when pushed by the airflow.

In this embodiment, the first abutting portions 1221 and the second abutting portions 1231 are abutting bumps, but the present invention is not limited thereto. In other embodiments, the first abutting portions and the second abutting portions may be, for example, one abutting bump and the other abutting groove, and the abutting bump and the abutting groove are concave-convex matching.

Please refer to Figure 5 and Figure 6 together. Figure 5 is a partially enlarged three-dimensional schematic diagram of the fan device 10 of Figure 1 with the wind shield opened. Figure 6 is a partially enlarged three-dimensional schematic diagram of the fan device of Figure 1 with the wind shield closed.

As shown in FIG5 , when the fan 11 generates airflow toward the air baffle assembly 12, the airflow pushes away the air baffle 122 of the air baffle assembly 12, causing the air baffle 122 to rotate in direction A to allow the airflow to flow out. At this time, the air baffle 122 pushes against the second abutting portion 1231 of the rotating member 123 through the first abutting portion 1221, causing the rotating member 123 to rotate in direction B. At the same time, the rotating member 123 squeezes the reset member 124, causing the reset member 124 to deform and store elastic force.

As shown in FIG6 , when the fan 11 is turned off and stops generating airflow, the air shield 122 is no longer blown by the airflow. At this time, the reset member 124 releases the stored elastic force and resets, so that the rotating member 123 rotates along the direction C, and the second push portion 1231 pushes against the first push portion 1221, so that the air shield 122 rotates along the direction D to shield the airflow channel 1121.

In the first embodiment, these wind shielding plates 1223 are in the shape of flat plates, but not limited thereto. In other embodiments, please refer to Figures 7 to 9. Figure 7 is a three-dimensional schematic diagram of the fan device according to the second embodiment of the present invention. Figure 8 is a three-dimensional schematic diagram of the wind shielding member of the fan device of Figure 7. Figure 9 is a three-dimensional schematic diagram of the wind shielding member of the fan device of Figure 7 from another viewing angle.

The fan device 10A of this embodiment is similar to the fan device 10 of the first embodiment, so the differences between this embodiment and the first embodiment will be described below, and the similarities will not be repeated. In this embodiment, each wind shielding member 122A of the wind shielding assembly 12A further includes a plurality of convex ribs 1224A. These wind shielding plates 1223A are, for example, arc-shaped and each have a wind receiving surface P. These convex ribs 1224A protrude from these wind receiving surfaces P, respectively. Among them, these convex ribs 1224A are, for example, arc-shaped and arranged side by side.

Please refer to Figures 10 and 11 together. Figure 10 is a three-dimensional schematic diagram of the wind shield of the fan device of Figure 7 after rotation. Figure 11 is another three-dimensional schematic diagram of the wind shield of the fan device of Figure 7 after rotation.

In this embodiment, when the fan 11 generates airflow toward the air baffle assembly 12A, the airflow forms a wind force F1 to apply force to the wind receiving surface P of the air baffle 1223A, so that the air baffle 1223A is pushed by the thrust F2 formed by the wind force F1 and rotates along the direction E. When the air baffle 1223A rotates along the direction E, the force receiving area of the air baffle 1223A subjected to the wind force will gradually decrease. At this time, the ribs 1224A protruding from the wind receiving surfaces P can make up for the reduced force receiving area to maintain the force required to push the air baffle 1223A open through the thrust F2. In this way, by providing these ribs 1224A on the air shield 122A, the force of the thrust F2 can be supplemented, so that the airflow can more easily push open the air shield 1223A.

In this embodiment, the number of the ribs 1224A is multiple, but not limited to this. In other embodiments, the number of the ribs can also be only one.

According to the fan device of the above-mentioned embodiment, since only one end of the rotating shaft of the air shield is rotatably inserted into the through hole of the front frame, there is no need to bend the rotating shaft, and the rotating shaft can be directly inserted into the through hole of the front frame. In this way, the air shield can be prevented from breaking the rotating shaft during assembly. In addition, since the air shield assembly is provided with a rotating member and a reset member, the first push-pushing portion of the air shield and the second push-pushing portion of the rotating member push against each other to open or close the air shield, and the reset member absorbs the swinging force of the air shield to reduce the friction between the rotating shaft and the through hole, so that the air shield can be prevented from breaking the rotating shaft when the airflow pushes.

Furthermore, by providing the ribs on the wind deflector, when the wind deflector rotates and the force-bearing area of the wind deflector subjected to the wind force gradually decreases, the reduced force-bearing area can be supplemented to supplement the force of the thrust, so that the airflow can more easily push the wind deflector away.

The fan device provided in this embodiment can be applied to, for example, a server host, which can be used for artificial intelligence (AI) computing, edge computing, and can also be used as a 5G server, cloud server, or Internet of Vehicles server.

Although the present invention is disclosed as above with the aforementioned embodiments, they are not used to limit the present invention. Anyone skilled in similar techniques may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be subject to the scope of the patent application attached to this specification.

10,10A: fan device 11: fan 111: fan frame 112: fan blade 1121: airflow channel 12,12A: airflow blocking assembly 121: front frame 1211: perforation 122,122A: air blocking member 1221: first push-pull portion 1222: rotating shaft 1223,1223A: air blocking plate 1224A: rib 123: rotating member 1231: second push-pull portion 124: reset member 125: fastener A~E: direction F1: wind force F2: thrust P: windward surface

FIG. 1 is a three-dimensional schematic diagram of a fan device according to the first embodiment of the present invention. FIG. 2 is a decomposed schematic diagram of the fan device of FIG. 1. FIG. 3 is a decomposed schematic diagram of the fan device of FIG. 1 from another perspective. FIG. 4 is a partially enlarged three-dimensional cross-sectional schematic diagram of the fan device of FIG. 1. FIG. 5 is a partially enlarged three-dimensional schematic diagram of the fan device of FIG. 1 with the wind shield opened. FIG. 6 is a partially enlarged three-dimensional schematic diagram of the fan device of FIG. 1 with the wind shield closed. FIG. 7 is a three-dimensional schematic diagram of a fan device according to the second embodiment of the present invention. FIG. 8 is a three-dimensional schematic diagram of the wind shield of the fan device of FIG. 7. FIG. 9 is a three-dimensional schematic diagram of the wind shield of the fan device of FIG. 7 from another perspective. FIG. 10 is a three-dimensional schematic diagram of the wind shield of the fan device of FIG. 7 after rotation. FIG. 11 is another three-dimensional schematic diagram of the wind shield of the fan device of FIG. 7 after rotation.

10: Fan device

11: Fan

111: fan frame

112: Fan blades

1121: Air flow channel

12: Flow-blocking assembly

121:Front frame

1211:Piercing

122: Wind shield

1221: First push part

1222: Rotation axis

1223: Wind shield

123: Rotating parts

1231: Second push part

124: Reset piece

125: Fasteners

Claims (10)

A fan device, comprising: A fan, comprising a fan frame and a fan blade, the fan frame having an airflow channel, the fan blade being rotatably disposed on the fan frame and located in the airflow channel, and the fan blade being used to generate airflow; and a baffle assembly, comprising: a front frame, mounted on the fan frame; a plurality of air baffles, one end of each of the air baffles being rotatably disposed on the front frame, the front frame surrounding at least a portion of the air baffles, and the air baffles comprising A plurality of first push-pushing parts; and a rotating member rotatably disposed on the front frame and including a plurality of second push-pushing parts, and through the rotation of the rotating member, the first push-pushing parts are respectively pushed against the corresponding second push-pushing parts, so that the air baffles are opened to allow the airflow generated by the fan blade to flow out from the airflow channel through the airflow baffle assembly, or the air baffles are closed to shield the airflow channel. A fan device as described in claim 1, wherein each of the wind shielding members includes a rotating shaft and a wind shielding plate, the wind shielding plate and the first pushing portion are arranged on the rotating shaft, the front frame has a through hole, and one end of the rotating shaft is rotatably inserted into the through hole. A fan device as described in claim 2, wherein the wind shielding plates are in the shape of flat plates. A fan device as described in claim 2, wherein each of the wind shielding members further comprises at least one convex rib, the wind shielding plates are arc-shaped and each has a wind receiving surface, and the convex ribs protrude from the wind receiving surfaces respectively. A fan device as described in claim 4, wherein the at least one rib is arc-shaped. A fan device as described in claim 4, wherein each of the wind shielding members has a plurality of at least one rib, and the ribs are arranged side by side. The fan device as described in claim 1 further comprises a reset member, which is arranged on the rotating member. When the rotating member rotates and causes the first pushing portions to push against the corresponding second pushing portions respectively, the reset member is used to reset the rotating member. The fan device as described in claim 7 further includes a fastener, and the rotating member and the reset member are fixed to the front frame through the fastener. A fan device as described in claim 8, wherein the fastener is a screw. A fan device as described in claim 7, wherein the reset member is a torsion spring.

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