TW201520429A - Fan - Google Patents

Abstract

A fan includes a main body, a first stator, a second stator, a first rotor, and a second rotor. The main body defines a through hole extending through a first side and a second side of the main body. The first stator is fixed in the through hole adjacent to the first side. The first rotor is rotatablely installed to the first stator. The second stator is fixed in the through hole adjacent to the second side. The second rotor is rotatablely installed to the second stator. Directions of airflow generated by the first rotor and the second rotor are opposite to each other.

Description

fan

The invention relates to a fan.

Conventional fans generally only provide one-way airflow. When different windflow directions are required, different fans are required, which is not versatile.

In view of this, it is necessary to provide a fan that can provide different directions of wind flow.

A fan includes a body, a first stator, a second stator, a first rotor, and a second rotor. The body is provided with a through hole extending through the body relative to the first side and the second side. The first rotor is mounted in the through hole, the first rotor is rotatably mounted on the first stator, the second stator is mounted in the through hole adjacent to the second side, and the second rotor is rotatably mounted with the second stator. The first rotor and the second rotor generate opposite directions of wind flow.

Compared with the prior art, the first rotor and the second rotor of the fan have different wind flow directions, and can be selected according to requirements, and has versatility.

1 is an exploded perspective view of a preferred embodiment of a fan of the present invention.

Figure 2 is a partial exploded view of Figure 1.

Figure 3 is a combination of a preferred embodiment of the fan of the present invention and a motherboard.

Figure 4 is a control circuit diagram of the fan of the present invention.

Referring to FIG. 1 to FIG. 3, the fan 10 of the present invention includes a body 12, a first stator 14 and a second stator 14a disposed apart from each other in the body 12, and are respectively rotatably mounted on the first stator 14, The first rotor 16 and the second rotor 18 of the two stators 14a and a control circuit.

The body 12 includes a first side surface 122 , a second side surface 124 opposite to the first side surface 122 , and a through hole 126 extending through the body 12 . The first rotor 16 is disposed in the through hole 126 adjacent to the first side surface 122 . On one side, the second rotor 18 is disposed in a side of the through hole 126 adjacent to the second side surface 124. The first rotor 16 and the second rotor 18 generate opposite wind flows.

Referring to FIG. 4 , the control circuit includes a connector 30 connected to the fan 10 , a selection module 40 disposed on the fan 10 , and a fan controller 50 . The connector 30 is coupled to an integrated baseboard management controller (IBMC) 101 on the motherboard 100.

The connector 30 includes a selection signal terminal Select; a pulse width control signal terminal PWMA; a pulse width control signal terminal PWMB; a power supply terminal +12V, a connection power source VCC; a ground terminal GND, ground.

The selection module 40 includes reverse gates U1, U2 and transmission gates TG1, TG2. The input end of the reverse gate U1 is connected to the first pin of the connector 30, and the output end of the reverse gate U1 is connected to the input end of the reverse gate U2. The low-level control terminal of the transmission gate TG1 is connected to the output terminal of the reverse gate U1, the high-level control terminal of the transmission gate TG2 is connected to the output terminal of the reverse gate U1, the output terminal of the reverse gate U2, and the high level of the transmission gate TG1 The control terminal and the low-level control terminal of the transmission gate TG2 are connected. The input end of the transmission gate TG1 is connected to the pulse width control signal terminal PWMA of the connector 30, and the input end of the transmission gate TG2 is connected to the pulse width control signal terminal PWMB of the connector 30, and the output end of the transmission gate TG1 and the output of the transmission gate TG2. The terminals are respectively connected to the fan controller 50.

The working principle of the above fan control circuit will be described below:

When the required wind flow direction is from the first side surface 122 to the second side surface 124, the integrated substrate management controller 101 controls the selection signal terminal of the connector 30 to output a high level, and the reverse gate U1 input terminal is at a high level, and the output is high. The terminal is low, the U2 input of the reverse gate is low, and the output is high. At this time, the high-level control terminal of the transmission gate TG1 is high level, the low-level control terminal is low level, the transmission gate TG1 is turned on; the high-level control terminal of the transmission gate TG2 is low level, and the low-level control terminal is High level, the transmission gate TG2 is turned off. The pulse width control signal terminal PWMA of the connector 30 outputs a first pulse width signal to the first rotor 16 through the fan controller 50 to rotate the first rotor 16.

When the required airflow direction is blown from the second side surface 124 to the first side surface 122, the integrated substrate management controller 101 controls the selection signal terminal Select output low level, the reverse gate U1 input terminal is low level, and the output terminal is high power. Ping, reverse gate U2 input is high level, output is low level. At this time, the high-level control terminal of the transmission gate TG2 is high level, the low-level control terminal is low level, the transmission gate TG2 is turned on; the high-level control terminal of the transmission gate T1 is low level, and the low-level control terminal is High level, the transfer gate TG1 is turned off. The pulse width control signal terminal PWMB of the connector 30 outputs a second pulse width signal to the second rotor 18 through the fan controller 50 to rotate the second rotor 18.

In other embodiments, the first rotor 16 may be opposite to the fan direction of the second rotor 18, the wind flow generated by the first rotor 16 is blown to the outside of the first side surface 122, and the wind flow generated by the second rotor 18 is blown to the outside of the second side surface 124. .

Therefore, the fan 10 of the present invention can control the wind direction of the fan 10 through the fan control circuit, which is simple and convenient.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10‧‧‧fan

12‧‧‧Ontology

122‧‧‧ first side

124‧‧‧ second side

14‧‧‧First Stator

14a‧‧‧second stator

16‧‧‧First rotor

18‧‧‧second rotor

30‧‧‧Connector

40‧‧‧Selection module

50‧‧‧Fan controller

100‧‧‧ motherboard

101‧‧‧Integrated Substrate Management Controller

U1, U‧‧‧ reverse gate 2

TG1, TG2‧‧‧ transmission gate

no

12‧‧‧Ontology

122‧‧‧ first side

124‧‧‧ second side

14‧‧‧First Stator

16‧‧‧First rotor

18‧‧‧second rotor

Claims (3)

A fan includes a body, a first stator, a second stator, a first rotor, and a second rotor. The body is provided with a through hole extending through the body relative to the first side and the second side. The first rotor is mounted in the through hole, the first rotor is rotatably mounted on the first stator, the second stator is mounted in the through hole adjacent to the second side, and the second rotor is rotatably mounted with the second stator. The first rotor and the second rotor generate opposite directions of wind flow. The fan of claim 1, wherein the fan further comprises a control circuit, the control circuit comprising:
a connector connected to a motherboard, including a selection signal terminal, a first pulse width control signal terminal and a second pulse width control signal terminal, wherein the selection signal terminal is configured to receive a selection signal from the motherboard, the a pulse width control signal end and a second pulse width control signal end are configured to receive a pulse width control signal from the motherboard;
a selection module includes a first reverse gate, a second reverse gate, and a first transmission gate and a second transmission gate. The input end of the first reverse gate is connected to the selection signal end of the connector, and the output end of the first reverse gate is The input end of the second reverse gate is connected, the low level control end of the first transmission gate is connected to the output end of the first reverse gate, and the high level control end of the second transmission gate is connected to the output end of the first reverse gate, The low level control end of the second transmission gate is connected to the high level control end of the first transmission gate, and the output end of the second reverse gate is connected to the node between the first transmission gate and the second transmission gate, the first transmission gate The input end is connected to the first pulse width control signal end of the connector, the input end of the second transmission door is connected to the second pulse width control signal end of the connector; and a controller, the output end of the first transmission gate and The output end of the second transmission gate is respectively connected to the controller. When the first transmission gate is turned on, the controller controls the rotation of the first rotor, and when the second transmission gate is turned on, the controller controls the rotation of the second rotor. The fan of claim 2, wherein the motherboard is provided with an integrated substrate management controller, and the connector is connected to the integrated substrate management controller.