Fan test fixture

Abstract

A fan testing jig comprises a testing frame, a plurality of wind receiving fans and a control panel module. The test frame is used for bearing a to-be-tested fan module, and the to-be-tested fan module comprises a plurality of fan units. The windward fans are linearly arranged on the test frame and respectively face the fan units. An air guide channel is arranged between each wind receiving fan and the fan unit and is used for guiding air flow of the fan unit to the wind receiving fan. The control panel module is electrically connected with the fan unit and the windward fan. The framework can quickly detect whether the lead joints of the fan units in the to-be-detected fan module are misconnected or not, so that the production time and cost are reduced, and the situation that airflow modes are disordered in a server in the future is reduced, so that the overall heat dissipation efficiency is kept.

Description

Technical Field

[0001] The present invention relates to a test fixture, and more particularly to a fan test fixture. Background Art

[0002] As servers tend to adopt high-frequency and high-speed data processing modes, the heat dissipation efficiency of servers is crucial. For example, multiple heat dissipation fans arranged in sequence are configured inside the server to dissipate heat from different heat sources configured in different areas. More specifically, in response to the heat energy requirements of different heat sources, the operating performance of these heat dissipation fans will be independently controlled respectively, so as to integrate a convection mode that matches the overall in the server.

[0003] However, if the wire connectors of these heat dissipation fans are respectively misconnected to the corresponding plug positions inside the server, the server cannot correctly drive the heat dissipation fans at the corresponding positions. In this way, not only the internal air flow pattern is disrupted, but the excess waste heat of a specific heat source cannot be removed, resulting in a reduction in the overall heat dissipation efficiency.

[0004] Therefore, it can be seen that the above technologies still have obvious inconveniences and defects, which are urgent problems to be solved in this industry. Summary of the Invention

[0005] An object of the present invention is to provide a fan test fixture and its fan module to solve the difficulties mentioned in the above prior art.

[0006] An embodiment of the present invention provides a fan test fixture. The fan test fixture includes a test rack, a plurality of first air-receiving fans, a plurality of air guide channels, and a control board module. The test rack is used to carry a fan module to be tested. The fan module to be tested includes a plurality of fan units. These first air-receiving fans are linearly arranged on the test rack and respectively face these fan units. Each air guide channel is adjacent to one of the first air-receiving fans and one of the fan units on the test rack. The control board module is electrically connected to these fan units and these first air-receiving fans.

[0007] According to one or more embodiments of the present invention, in the above fan test fixture, the test rack includes a bottom plate and an upright frame. The upright frame is erected on the bottom plate and includes a first groove and a second groove. The first groove is used to accommodate the fan module to be tested. The second groove is parallel to and communicates with the first groove, and is used to accommodate these first air-receiving fans.

[0008] According to one or more embodiments of the present invention, in the above-mentioned fan test fixture, the fan module to be tested further includes an adapter board. The adapter board includes a board body, a plurality of first electrical engagement portions, and a plurality of second electrical engagement portions. The board body is located in the first groove, and the first electrical engagement portions and the second electrical engagement portions are respectively fixed to two opposite surfaces of the board body. Each first electrical engagement portion is electrically connected to one of the second electrical engagement portions to jointly form a control channel. Each of these fan units has a wire connector. These wire connectors are respectively detachably connected to these first electrical engagement portions. The control board module includes a wiring board, a control unit, and a plurality of electrical connection portions. The wiring board is located on the bottom board, and the control unit and these electrical connection portions are respectively distributed on the wiring board. These electrical connection portions are respectively detachably connected to these second electrical engagement portions. The control unit is electrically connected to the wiring board and these electrical connection portions to operate these fan units respectively through these control channels.

[0009] According to one or more embodiments of the present invention, in the above-mentioned fan test fixture, the test rack further includes a plurality of wind blocking plates. These wind blocking plates are arranged at intervals in the second groove. A guide air channel is jointly defined between two adjacent ones of these wind blocking plates. Each first air-receiving fan is located in one of the guide air channels, and each wind blocking plate extends from one of the first air-receiving fans to the fan module to be tested.

[0010] According to one or more embodiments of the present invention, the above-mentioned fan test fixture further includes a plurality of second air-receiving fans. These second air-receiving fans are electrically connected to the control board module and are linearly arranged on the test rack such that each fan unit is respectively located between one of the first air-receiving fans and one of the second air-receiving fans. These fan units are respectively two-way fans, so as to be able to output airflows to these first air-receiving fans and these second air-receiving fans respectively.

[0011] An embodiment of the present invention provides a fan test fixture. The fan test fixture includes a test rack, a plurality of first air-receiving fans, and a control board module. The test rack is used to carry a fan module to be tested. The fan module to be tested includes an adapter board and a plurality of fan units. The adapter board has a plurality of control channels. Each fan unit is removably connected to one of the control channels. These first air-receiving fans are linearly arranged on the test rack and respectively face these fan units one by one, so as to be respectively pushed and rotated by the airflows of these fan units. The control board module is electrically connected to these control channels and these first air-receiving fans. Each first air-receiving fan that is pushed and rotated can transmit a feedback signal back to the control board module. When the control board module operates one of the fan units alone through one of the control channels and causes one of the first air-receiving fans to be pushed and rotated, the control board module determines whether the first air-receiving fan that is pushed and rotated faces the fan unit that is operated alone through the feedback signal transmitted back by the first air-receiving fan that is pushed and rotated.

[0012] According to one or more embodiments of the present invention, in the above-mentioned fan test fixture, the adapter board includes a board body, a plurality of first electrical connection parts and a plurality of second electrical connection parts. These first electrical connection parts and these second electrical connection parts are respectively fixedly connected to two opposite surfaces of the board body. Each first electrical connection part is electrically connected to one of the second electrical connection parts to jointly form one of the control channels. These fan units respectively have a wire connector. These wire connectors are respectively pluggable to connect these first electrical connection parts. The control board module includes a wiring board, a control unit and a plurality of electrical connection parts. The wiring board is located on the test rack, and the control unit and these electrical connection parts are respectively distributed on the wiring board. These electrical connection parts are respectively pluggable to connect these second electrical connection parts. The control unit is electrically connected to the wiring board and these electrical connection parts to operate these fan units respectively through these control channels.

[0013] According to one or more embodiments of the present invention, in the above-mentioned fan test fixture, these control channels respectively have a plurality of first numbers that are different from each other, and these first air-receiving fans respectively have a plurality of second numbers that are different from each other, and these second numbers respectively match these first numbers one by one. When the control board module obtains one of the second numbers through the feedback signal and determines that the second number matches the first number of the control channel, the control board module determines that the first air-receiving fan that is pushed to rotate faces the fan unit that is operated alone.

[0014] According to one or more embodiments of the present invention, in the above-mentioned fan test fixture, each first air-receiving fan has a voltage pin, a pulse width modulation pin, a rotation speed pin and a ground pin. When one of the first air-receiving fans is pushed to rotate, the first air-receiving fan that is pushed to rotate transmits the feedback signal from the rotation speed pin to the control board module. The feedback signal is a rotation speed signal.

[0015] According to one or more embodiments of the present invention, in the above-mentioned fan test fixture, when the control board module instructs the fan unit that is operated alone to rotate to a specific rotation speed and synchronously receives the rotation speed signal, the control board module obtains a fan rotation speed value from the rotation speed signal, determines whether the fan rotation speed value is within a preset range, and determines that the first air-receiving fan that is pushed to rotate does not face the fan unit that is operated alone when it is determined that the fan rotation speed value is not within the preset range.

[0016] In this way, through the above architecture, the fan test fixture of this case can quickly detect whether there is a fact that the wire connectors of each fan unit in the fan module to be tested are misconnected, which not only reduces the production man-hours and production costs, but also reduces the chance of causing chaos in the air flow pattern in the future server, thereby maintaining the overall heat dissipation efficiency.

[0017] The above description is only used to illustrate the problems to be solved by the present invention, the technical means for solving the problems, and the effects produced thereby. The specific details of the present invention will be described in detail in the following embodiments and related drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the description of the accompanying drawings is as follows:

[0019] Figure 1 A perspective view of a fan test fixture according to an embodiment of the present invention;

[0020] Figure 2 is Figure 1 an exploded view of the fan test fixture;

[0021] Figure 3 is Figure 1 a cross-sectional view taken along line AA in

[0022] Figure 4 is Figure 1 a cross-sectional view taken along line BB in

[0023] Figure 5 is Figure 1 an operating schematic diagram of the fan test fixture;

[0024] Figure 6 is Figure 1 a pin schematic diagram of one of the wind-receiving fans in

[0025] Figure 7 a schematic diagram of a fan test fixture according to an embodiment of the present invention.

[0026]

REFERENCE SIGNS

[0027] 10, 11: Fan test fixture

[0028] 100: Test stand

[0029] 110: Bottom plate

[0030] 111: Top surface

[0031] 112: Bump

[0032] 120: Upright frame

[0033] 121: First groove

[0034] 122: Second groove

[0035] 123: Support body

[0036] 124: Wind blocking plate

[0037] 125: Air guide channel

[0038] 126: Detachable fixing part

[0039] 200: Control board module

[0040] 210: Wiring board

[0041] 220: Control unit

[0042] 230: First electrical connection part

[0043] 240: Second electrical connection part

[0044] 300: First air-receiving fan

[0045] 310: Second wire connector

[0046] 311: Voltage pin

[0047] 312: Pulse width modulation pin

[0048] 313: Rotation speed pin

[0049] 314: Ground pin

[0050] 400: Second air-receiving fan

[0051] 500: Fan module to be tested

[0052] 510,550: Fan unit

[0053] 511: First wire connector

[0054] 520: Long outer frame

[0055] 530: Cover

[0056] 540: Adapter board

[0057] 541: Board body

[0058] 541A,541B: Surface

[0059] 542: First electrical joint part

[0060] 543: Second electrical joint part

[0061] 544: Control channel

[0062] 551: First fan

[0063] 552: Second fan

[0064] A1,A2: Airflow

[0065] AA,BB: Line segment

[0066] X, Y, Z: Axes

[0067] F1 to F4, S1 to S4: Numbers Detailed implementation manner

[0068] The following will disclose multiple embodiments of the present invention with the accompanying drawings. For the sake of clear illustration, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is to say, in one embodiment of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the accompanying drawings, some conventional structures and elements will be shown in a simple schematic manner in the accompanying drawings.

[0069] Figure 1 This is a perspective view of a fan test fixture 10 according to an embodiment of the present invention. Figure 2 is Figure 1 an exploded view of the fan test fixture 10. In this embodiment, as shown in Figure 1 and Figure 2 , the fan test fixture 10 includes a test stand 100, a control board module 200, and a plurality of first air-receiving fans 300. The test stand 100 carries a fan module 500 to be tested. The fan module 500 to be tested includes a plurality of fan units 510. The fan units 510 are linearly arranged with each other. These first air-receiving fans 300 are linearly arranged on a long side of the test stand 100 and face these fan units 510 respectively, so that one of the fan units 510 can output air flow in the direction of the corresponding first air-receiving fan 300 (such as the X-axis), thereby pushing and rotating the first air-receiving fan 300. The control board module 200 is electrically connected to these fan units 510 and these first air-receiving fans 300 to operate these fan units 510 and detect the feedback signals transmitted back by these first air-receiving fans 300, and in response to the feedback signals of these first air-receiving fans 300, detect whether there is a wrong connection of the wire joints of each fan unit 510 in the fan module 500 to be tested.

[0070] In this embodiment, more specifically, the test stand 100 includes a bottom plate 110 and an upright frame 120. The upright frame 120 is erected on the top surface 111 of the bottom plate 110. The upright frame 120 has a first groove 121 and a second groove 122 that are connected to each other and parallel. The major axis directions of the first groove 121, the second groove 122, and the major axis direction of the long outer frame 520 (such as the Z-axis) are parallel to each other. The first groove 121 allows the fan module 500 to be tested to be removably inserted therein, and the second groove 122 allows the first air-receiving fans 300 to be respectively received therein in sequence. These first air-receiving fans 300 are respectively aligned with these fan units 510 one by one, and the air outlet surface of the fan unit 510 faces the air-receiving surface of the first air-receiving fan 300. More specifically, each fan unit 510 is coaxially aligned with the first air-receiving fan 300. In other words, the first air-receiving fan 300 and this fan unit 510 are interlocked devices in the same group at the same height. More specifically, the test stand 100 includes a plurality of detachable fixing members 126. Each detachable fixing member 126 fixedly clamps the first air-receiving fan 300 to the test stand 100. That is, each first air-receiving fan 300 is clamped between the detachable fixing member 126 and the test stand 100 within the second groove 122.

[0071] However, the present invention is not limited thereto. The first air-receiving fan 300 and the fan unit 510 that are interlocked devices in the same group may also only partially overlap. In this embodiment, the first air-receiving fan 300 and the fan unit 510 are both devices of the same type and model. However, the present invention is not limited thereto.

[0072] In addition, the fan module 500 to be tested includes a long outer frame 520, a cover 530, and an adapter plate 540. These fan units 510 are linearly arranged in a straight line direction within the carrier frame, and the straight line direction is parallel to the major axis direction of the long outer frame 520 (such as the Z-axis). The adapter plate 540 and the cover 530 respectively cover two opposite ends of the long outer frame 520. However, the present invention is not limited thereto.

[0073] Figure 3 For Figure 1 the cross-sectional view taken along the line AA in Figure 4 For Figure 1 the cross-sectional view taken along the line BB in. As Figure 2 And Figure 3As shown, the test fixture 100 further includes a support body 123 fixed in the first groove 121 to support the fan module 500 to be tested between the fan module 500 to be tested and the control board module 200. In addition, the test fixture 100 further includes a plurality of wind blocking plates 124. These are arranged at intervals in the second groove 122, and a wind guiding channel 125 is defined jointly between two adjacent ones of these wind blocking plates 124. Each first wind-receiving fan 300 is located in one of the wind guiding channels 125, and the wind blocking plates 124 on both sides of the first wind-receiving fan 300 extend from the first wind-receiving fan 300 to the fan module 500 to be tested. In other words, each wind guiding channel 125 is adjacent to the first wind-receiving fan 300 and the fan unit 510. Thus, the air flow of the fan unit 510 can be efficiently guided to the first wind-receiving fan 300, thereby driving the first wind-receiving fan 300 to rotate.

[0074] Figure 5 For Figure 1 the schematic operation diagram of the fan test fixture 10. As Figure 2 and Figure 5 shown, the adapter board 540 includes a board body 541, a plurality of first electrical engagement parts 542 and a plurality of second electrical engagement parts 543. These first electrical engagement parts 542 and these second electrical engagement parts 543 are respectively fixed on two opposite surfaces 541A, 541B of the board body 541. Each first electrical engagement part 542 is respectively electrically connected to one of the second electrical engagement parts 543 to jointly form independent control channels 544. More specifically, these fan units 510 respectively have wires and first wire connectors 511 on the wires. The first wire connector 511 of each fan unit 510 is detachably connected to one of the first electrical engagement parts 542. Therefore, the control board module 200 can respectively send and receive signals to and from these fan units 510 through these control channels 544, such as starting the fan unit 510. When the control board module 200 operates one of the fan units 510, the control unit 220 starts the fan blades of the fan unit 510 to blow out air flow.

[0075] The control board module 200 includes one or more wiring boards 210, a control unit 220, a plurality of first electrical connection parts 230 and a plurality of second electrical connection parts 240. The wiring boards 210 are electrically connected to each other. One of the wiring boards 210 is fixed on the bottom plate 110, and the wiring boards 210 extend in the X-Y plane, and the remaining wiring boards 210 are arranged on the bumps 112 according to the configuration design. The control unit 220, these first electrical connection parts 230 and these second electrical connection parts 240 are respectively distributed on the wiring boards 210. These second electrical engagement parts 543 are respectively detachably connected to these first electrical connection parts 230. The control unit 220 is electrically connected to the wiring boards 210 and these first electrical connection parts 230. Therefore, the control unit 220 can independently operate any one of the above-mentioned fan units 510 through any one of the control channels 544.

[0076] These first air-receiving fans 300 each have an electric wire and a second wire connector 310 on the electric wire. The second wire connector 310 of each first air-receiving fan 300 is pluggably connected to the second electrical connection part 240 of the wiring board 210. Therefore, the control board module 200 can respectively transmit and receive signals to and from these first air-receiving fans 300 through the electric wire and the second electrical connection part 240, for example, receive the feedback signals of the first air-receiving fans 300.

[0077] In this embodiment, these control channels 544 each have a different first number, and these first air-receiving fans 300 each have a different second number, and these second numbers respectively match these first numbers one by one. Therefore, when it is determined that the first number of the control channel 544 of the selected operating fan unit 510 and the second number of the first air-receiving fan 300 that is pushed to rotate match each other, it can be determined that the first air-receiving fan 300 and the fan unit 510 are aligned with each other, that is, the first air-receiving fan 300 and the fan unit 510 are interlocked devices in the same group at the same height. Vice versa.

[0078] For example, the numbers of these fan units 510, control channels 544, and first air-receiving fans 300 are all 4, and these control channels 544 are sequentially numbered as S1 to S4, and the first air-receiving fans 300 are respectively numbered as F1 to F4 according to the arrangement order from top to bottom. Among them, the control channel 544 numbered S1 corresponds to the first air-receiving fan 300 numbered F1, and the control channel 544 numbered S2 corresponds to the first air-receiving fan 300 numbered F2, and so on.

[0079] In this way, when the control board module 200 starts to detect the fan module 500 to be tested, the control unit 220 starts to independently operate its fan unit 510 through the control channel 544 numbered S1. At this time, the corresponding fan unit 510 will start to operate and output air flow to the first air-receiving fan 300 in the same group, so that the first air-receiving fan 300 starts to be pushed to rotate. At this time, the first air-receiving fan 300 in the rotating state synchronously generates a feedback signal and continuously transmits it back to the control unit 220.

[0080] When the control unit 220 receives this feedback signal, the control unit 220 detects the number F1 of the first air-receiving fan 300 through the feedback signal and determines whether the number S1 of the control channel 544 matches the number F1 of this first air-receiving fan 300.

[0081] When it is determined that the number S1 of the control channel 544 does not match the number F2 of the first wind-receiving fan 300, it means that the first wind-receiving fan 300 and the fan unit 510 are not facing each other. That is, the first wire connector 511 of this fan unit 510 may be wrongly connected to other first electrical joints 542. Therefore, the control unit 220 stops this detection and issues an alarm.

[0082] Conversely, when it is determined that the number S1 of the control channel 544 matches the number F1 of the first wind-receiving fan 300, it means that the first wind-receiving fan 300 and the fan unit 510 are facing each other. That is, the first wire connector 511 of this fan unit 510 is correctly connected to the first electrical joint 542 corresponding to the control channel 544. Therefore, the control unit 220 continues to independently operate another fan unit 510 via the control channel 544 numbered S2 until it is determined that each fan unit 510 operated by each control channel 544 faces the first wind-receiving fan 300 with a matching number. That is, these fan units 510 are respectively connected to the first electrical joints 542 of the control channels 544 numbered S1 to S4 in sequence according to the top-down arrangement order.

[0083] It should be understood that when the first wire connectors 511 of each fan unit 510 of the fan module 500 to be tested are correctly connected to the corresponding first electrical joints 542, according to the top-down arrangement order of the fan units 510, the first electrical joints 542 of the control channels 544 numbered S1 to S4 will be connected to the first wire connectors 511 of each fan unit 510 in sequence. In this way, when the fan module 500 to be tested without errors is installed in a server (not shown in the figure) for operation, the server can correctly start any one of the fan units 510 arranged from top to bottom, so as to accurately control the air flow and temperature in the responsible area of each fan unit 510 in the server, so as to integrate a matching overall convection mode in the server and avoid the fan units 510 in the wrong positions from outputting excessive or insufficient air volume.

[0084] Figure 6 For Figure 1 the pin schematic diagram of one of the wind-receiving fans. As Figure 6 shown, in this embodiment, for example, each second wire connector 310 of each first wind-receiving fan 300 has a voltage pin 311, a pulse-width modulation pin 312 (Pulse-width modulation, PWM), a rotation speed pin 313 (Tach), and a ground pin 314 (ground). Therefore, when one of the first wind-receiving fans 300 is pushed by the air flow to rotate, the first wind-receiving fan 300 can transmit a rotation speed signal back to the control board module 200 from the rotation speed pin 313.

[0085] Thus, to avoid the fan unit 510 pushing and rotating adjacent fan units 510 at different heights, which may lead to misjudgment of the control board module 200, in this embodiment, when the control board module 200 instructs one of the fan units 510 to rotate to a specific rotational speed (e.g., 6000 RPM), the airflow output by the fan unit 510 may push and rotate the corresponding first air-receiving fan 300 to a rotational speed within a preset range (e.g., 5000 - 6000 RPM).

[0086] Therefore, when the control board module 200 instructs one of the fan units 510 to rotate to a specific rotational speed and synchronously receives the rotational speed signal transmitted back by one of the first air-receiving fans 300, the control board module 200 obtains a fan rotational speed value from the rotational speed signal and determines whether the fan rotational speed value is within a preset range. If so, it is determined that the first air-receiving fan 300 and the operating fan unit 510 are aligned with each other; otherwise, it is determined that the first air-receiving fan 300 and the operating fan unit 510 are not facing each other.

[0087] Figure 7 Schematic diagram of a fan test fixture 11 according to an embodiment of the present invention. As Figure 7 shown, the fan test fixture 11 of this embodiment is substantially the same as the fan test fixture 10 of the above embodiment, except that the fan test fixture 11 further includes a plurality of second air-receiving fans 400. These second air-receiving fans 400 are electrically connected to the control board module 200, and these second air-receiving fans 400 are arranged opposite to the first air-receiving fans 300 and linearly arranged on the other long side of the test rack 100. These second air-receiving fans 400 respectively face these fan units 550, so that one of the fan units 550 can output an airflow toward the corresponding second air-receiving fan 400, thereby pushing and rotating the second air-receiving fan 400. In other words, the first air-receiving fans 300, the second air-receiving fans 400, and the fan units 550 are co-group linkage devices at the same height, and each fan unit 550 is respectively located between the first air-receiving fan 300 and the second air-receiving fan 400. However, the present invention is not limited thereto.

[0088] More specifically, each fan unit 550 is a bidirectional fan having a first fan 551 and a second fan 552 that are coaxial and overlapping with each other. The first fan 551 is used to output an airflow A1 toward the first air-receiving fan 300 of the co-group linkage device. The second fan 552 is used to output an airflow A2 toward the second air-receiving fan 400 of the co-group linkage device.

[0089] However, this case is not limited to this. In other embodiments, after the control board module 2000 drives these fan units 510 in sequence, it may only be manually determined whether the first wind-receiving fan 300 in the same group is pushed and rotated, so as to detect the misconnection of the wire joints of each fan unit 510 therein, without detecting the fan module to be tested in response to the feedback signal of the first wind-receiving fan.

[0090] Thus, through the above architecture, the fan test fixture of this case can quickly detect whether there is a misconnection of the wire joints of each fan unit in the fan module to be tested, not only reducing the production man-hours and production costs, but also reducing the chance of causing a chaotic air flow pattern in the future server, thereby maintaining the overall heat dissipation efficiency.

[0091] Finally, in the above-disclosed embodiments, they are not intended to limit the present invention. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all can be protected by the present invention. Therefore, the protection scope of the present invention shall be subject to what is defined by the appended claims.

Claims

1. A fan test fixture, characterized in that, it includes: A test rack for carrying a fan module to be tested, the fan module to be tested includes a plurality of fan units; A plurality of first air-receiving fans are linearly arranged on the test rack and respectively face the plurality of fan units; A plurality of air guiding channels, each of the plurality of air guiding channels is adjacent to one of the plurality of first air-receiving fans and one of the plurality of fan units on the test rack; and A control board module is electrically connected to the plurality of fan units and the plurality of first air-receiving fans.

2. The fan test fixture according to claim 1, characterized in that, wherein the test rack includes: A bottom plate; and An upright frame erected on the bottom plate, including: A first groove for accommodating the fan module to be tested; and A second groove parallel and communicating with the first groove for accommodating the plurality of first air-receiving fans.

3. The fan test fixture according to claim 2, characterized in that, wherein the fan module to be tested further includes an adapter board, the adapter board includes a board body, a plurality of first electrical engagement parts and a plurality of second electrical engagement parts, the board body is located in the first groove, and the plurality of first electrical engagement parts and the plurality of second electrical engagement parts are respectively fixedly connected to two opposite surfaces of the board body, each of the plurality of first electrical engagement parts is electrically connected to one of the plurality of second electrical engagement parts to jointly form a control channel; Each of the plurality of fan units has a wire connector, and the wire connectors are respectively pluggably connected to the plurality of first electrical engagement parts; and The control board module includes a wiring board, a control unit and a plurality of electrical connection parts, the wiring board is located on the bottom plate, the control unit and the plurality of electrical connection parts are respectively distributed on the wiring board, the plurality of electrical connection parts are respectively pluggably connected to the plurality of second electrical engagement parts, and the control unit is electrically connected to the wiring board and the plurality of electrical connection parts to respectively operate the plurality of fan units through the control channel.

4. The fan test fixture according to claim 2, characterized in that, wherein the test rack further includes: A plurality of wind blocking plates are spacedly arranged in the second groove, and one of the plurality of wind blocking plates defines one of the plurality of air guiding channels together with two adjacent ones of them, wherein each of the plurality of first air-receiving fans is located in one of the air guiding channels, and each of the plurality of wind blocking plates extends from one of the plurality of first air-receiving fans to the fan module to be tested.

5. The fan test fixture according to claim 1, characterized in that, it further includes: A plurality of second air-receiving fans are electrically connected to the control board module and linearly arranged on the test rack, so that each of the plurality of fan units is respectively located between one of the plurality of first air-receiving fans and one of the plurality of second air-receiving fans, and each of the plurality of fan units is a two-way fan, so that it can respectively output air flow to the plurality of first air-receiving fans and the plurality of second air-receiving fans.

6. A fan test fixture, characterized in that, it includes: A test stand for carrying a fan module under test, the fan module under test including an adapter board and a plurality of fan units, the adapter board having a plurality of control channels, and each of the plurality of fan units removably connected to one of the plurality of control channels; A plurality of first air-receiving fans linearly arranged on the test stand and respectively facing the plurality of fan units one by one, so as to be respectively pushed and rotated by the airflows of the plurality of fan units; and A control board module electrically connected to the plurality of control channels and the plurality of first air-receiving fans, wherein each of the plurality of first air-receiving fans pushed and rotated can transmit a feedback signal back to the control board module, wherein when the control board module operates one of the plurality of fan units alone via one of the plurality of control channels and causes one of the plurality of first air-receiving fans to be pushed and rotated, the control board module determines whether the first air-receiving fan being pushed and rotated faces the fan unit being operated alone through the feedback signal transmitted back by the first air-receiving fan being pushed and rotated.

7. The fan test fixture according to claim 6, characterized in that, wherein the adapter board includes a board body, a plurality of first electrical joints and a plurality of second electrical joints, the plurality of first electrical joints and the plurality of second electrical joints are respectively fixed to two opposite surfaces of the board body, and each of the plurality of first electrical joints is electrically connected to one of the plurality of second electrical joints to jointly form one of the plurality of control channels; the plurality of fan units respectively have a wire connector, and the plurality of wire connectors are respectively pluggably connected to the plurality of first electrical joints; and the control board module includes a wiring board, a control unit and a plurality of electrical connection parts, the wiring board is located on the test stand, the control unit and the plurality of electrical connection parts are respectively distributed on the wiring board, the plurality of electrical connection parts are respectively pluggably connected to the plurality of second electrical joints, and the control unit is electrically connected to the wiring board and the plurality of electrical connection parts to operate the plurality of fan units respectively through the plurality of control channels.

8. The fan test fixture according to claim 6, characterized in that, wherein the plurality of control channels respectively have a plurality of different first numbers, and the plurality of first air-receiving fans respectively have a plurality of different second numbers, and the plurality of second numbers respectively match the plurality of first numbers one by one, wherein when the control board module obtains one of the plurality of second numbers through the feedback signal and determines that the second number matches one of the plurality of first numbers of the control channel, the control board module determines that the first air-receiving fan being pushed and rotated faces the fan unit being operated alone.

9. The fan test fixture according to claim 6, characterized in that, wherein each of the plurality of first air-receiving fans has a voltage pin, a pulse width modulation pin, a rotation speed pin and a ground pin, When one of the multiple first wind-receiving fans is pushed to rotate, the pushed and rotated first wind-receiving fan transmits the feedback signal to the control board module from the rotation speed pin, and the feedback signal is a rotation speed signal.

10. The fan test fixture according to claim 9, characterized in that when the control board module instructs the fan unit running alone to rotate to a specific rotation speed and synchronously receives the rotation speed signal, the control board module obtains a fan rotation speed value from the rotation speed signal, determines whether the fan rotation speed value is within a preset range, and when it is determined that the fan rotation speed value is not within the preset range, determines that the pushed and rotated first wind-receiving fan is not facing the fan unit running alone.

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