Heat dissipation device and heat dissipation system

Abstract

The invention provides a heat dissipation device and a heat dissipation system, and the heat dissipation device comprises a fan which is provided with a heat dissipation channel; the monitoring module is arranged on the target side of the heat dissipation channel and used for monitoring the installation state of the fan when the fan works; the monitoring module comprises a monitoring circuit; the movable plate moves relative to the fan when the fan works; when the fan is in a first installation state, the movable plate moves to a first position based on air flow of the heat dissipation channel, and the monitoring circuit is in a first electric connection state. When the fan is in a second installation state, the movable plate moves to a second position based on the air flow of the heat dissipation channel, and the monitoring circuit is in a second electric connection state; the first electrical connection state is different from the second electrical connection state.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic equipment, and in particular to a heat dissipation device and a heat dissipation system. Background Art

[0002] Electronic devices typically incorporate heat sinks for heat dissipation. Because the fan in a heat sink is difficult to detect when installed upside down, there's no immediate warning signal, negatively impacting system heat dissipation. Numerous factors can influence system heat dissipation, making it difficult to immediately identify system anomalies caused by the fan. Summary of the Invention

[0003] In view of the above problems, the present disclosure provides a heat dissipation device and a heat dissipation system.

[0004] A first aspect of the present disclosure provides a heat dissipation device, comprising:

[0005] A fan with a heat dissipation channel;

[0006] a monitoring module, provided on the target side of the heat dissipation channel, for monitoring the installation status of the fan when the fan is in operation;

[0007] The monitoring module includes:

[0008] Monitoring circuit;

[0009] a movable plate, wherein the movable plate moves relative to the fan when the fan is in operation;

[0010] When the fan is in the first installation state, the movable plate moves to the first position based on the airflow of the heat dissipation channel, and the monitoring circuit is in the first electrical connection state;

[0011] When the fan is in the second installation state, the movable plate moves to the second position based on the airflow of the heat dissipation channel, and the monitoring circuit is in the second electrical connection state; the first electrical connection state is different from the second electrical connection state.

[0012] According to an embodiment of the present disclosure, the movable plate is provided with a target circuit, and when the movable plate moves to the first position, the target circuit is not connected to the monitoring circuit; when the movable plate moves to the second position, the target circuit is electrically connected to the monitoring circuit, so that the first electrical connection state is different from the second electrical connection state;

[0013] The target side of the heat dissipation channel is at least one of the fan air inlet side and the fan air outlet side.

[0014] According to an embodiment of the present disclosure, the monitoring module further comprises a frame, and the movable plate is movably connected to the frame;

[0015] At least part of the monitoring circuit is disposed on the frame;

[0016] When in the first position, the conductive portion of the movable plate is in non-contact with the monitoring circuit, and the first electrical connection state includes the target circuit being in an open circuit state;

[0017] When in the second position, the conductive portion of the movable plate is in contact with the monitoring circuit, and the second electrical connection state includes the target circuit being in a conductive state.

[0018] According to an embodiment of the present disclosure, the monitoring circuit is connected to a first resistor and a second resistor, and at least one of the first resistor and the second resistor can be in a conducting state;

[0019] Wherein, when in the first position, the first resistor and the second resistor are electrically connected to the monitoring circuit and are in a conductive state, and the first electrical connection state includes the monitoring circuit being in a first conductive state;

[0020] When in the second position, the movable plate is electrically connected to the monitoring circuit through the first resistor. The second electrical connection state includes the monitoring circuit being in a second conductive state, which is different from the first conductive state.

[0021] According to an embodiment of the present disclosure, the monitoring module further includes a connecting assembly, and the movable plate is movably connected to the frame via the connecting assembly;

[0022] The connecting assembly includes a stopper, which is provided on two opposite supporting parts of the frame and is located in the movable direction of the movable plate;

[0023] When the fan is in the first installation state, the movable plate is located on the first side of the stopper based on the airflow of the heat dissipation channel and can be moved to the first position, and the movable plate has a first movable angle;

[0024] When the fan is in the second installation state, the movable plate moves from the first side of the stopper to the second side of the stopper based on the airflow of the heat dissipation channel and is capable of moving to the second position, and the movable plate has a second movable angle;

[0025] The second active angle is not greater than the first active angle.

[0026] According to an embodiment of the present disclosure, the two support portions can be deformed under the action of an external force to increase the distance between the two stoppers, so that the movable plate can be switched from the second side of the stopper to the first side of the stopper; or

[0027] At least one of the two stoppers can be deformed under the action of an external force to increase the distance between the two stoppers, so that the movable plate can be switched from the second side of the stopper to the first side of the stopper.

[0028] According to an embodiment of the present disclosure, the connecting assembly includes an elastic member, the movable plate is rotatably connected to the frame via the elastic member, and the elastic member is capable of providing a restoring force under the action of an external force applied by the movable plate;

[0029] The movable plate is rotated to the first position based on the wind flow in the first direction of the heat dissipation channel, or the movable plate is rotated to the second position based on the wind flow in the second direction of the heat dissipation channel;

[0030] The second direction is opposite to the first direction.

[0031] According to an embodiment of the present disclosure, the frame is provided with a receiving groove, a partial conductive area of ​​the monitoring circuit is exposed from the receiving groove, and the partial conductive area is located in the movement direction of the movable plate;

[0032] The movable plate comprises:

[0033] a board having the target circuit;

[0034] a rotating portion, provided at a first end of the plate body and rotatably connected to the frame, wherein the rotating portion or a second end of the plate body has a conductive portion electrically connected to the target circuit;

[0035] The monitoring module further includes an alarm module, and when the monitoring circuit is in the second electrical connection state, the alarm module can issue an alarm message.

[0036] A second aspect of the present disclosure provides a heat dissipation system, comprising:

[0037] A box body having a receiving cavity;

[0038] A plurality of heat dissipation devices are provided in the accommodating cavity;

[0039] Wherein, the heat dissipation device comprises:

[0040] A fan with a heat dissipation channel;

[0041] a monitoring module, provided on the target side of the heat dissipation channel, for monitoring the installation status of the fan when the fan is in operation;

[0042] The monitoring module includes:

[0043] Monitoring circuit;

[0044] a movable plate, wherein the movable plate moves relative to the fan when the fan is in operation;

[0045] When the fan is in the first installation state, the movable plate moves to the first position based on the airflow of the heat dissipation channel, and the monitoring circuit is in the first electrical connection state;

[0046] When the fan is in the second installation state, the movable plate moves to the second position based on the airflow of the heat dissipation channel, and the monitoring circuit is in the second electrical connection state; the first electrical connection state is different from the second electrical connection state.

[0047] According to an embodiment of the present disclosure, the resistance value of any of the monitoring modules is different from the resistance values ​​of other monitoring modules;

[0048] The monitoring circuits of the plurality of monitoring modules form a parallel circuit;

[0049] The installation status of the plurality of fans is determined based on the current value of the parallel circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] For a more complete understanding of the present disclosure and its advantages, reference will now be made to the following description taken in conjunction with the accompanying drawings, in which:

[0051] Figure 1 Schematically shows one of the structural diagrams of the heat dissipation device according to an embodiment of the present disclosure;

[0052] Figure 2 The second structural diagram of the heat dissipation device according to an embodiment of the present disclosure is schematically shown;

[0053] Figure 3A Schematically shows a schematic diagram of a movable panel moving to a first position according to an embodiment of the present disclosure;

[0054] Figure 3B Schematically shows a schematic diagram of the movable panel moving to the second position according to an embodiment of the present disclosure;

[0055] Figure 4 Schematically showing a comparison diagram of the movable panel moving to a first position and a second position according to an embodiment of the present disclosure;

[0056] Figure 5A A schematic diagram schematically shows a monitoring circuit in an open circuit state according to an embodiment of the present disclosure;

[0057] Figure 5B A schematic diagram schematically shows a monitoring circuit in a conducting state according to an embodiment of the present disclosure;

[0058] Figure 6Schematically shows a schematic diagram of a monitoring circuit in a first conducting state according to an embodiment of the present disclosure;

[0059] Figure 7 Schematically shows a schematic diagram of a monitoring circuit in a second conducting state according to an embodiment of the present disclosure;

[0060] Figure 8A Schematically illustrating a schematic diagram in which a target circuit and a monitoring circuit are not connected according to an embodiment of the present disclosure;

[0061] Figure 8B Schematic diagram showing the electrical connection between the target circuit and the monitoring circuit according to an embodiment of the present disclosure;

[0062] Figure 9A Schematically shows one of the structural diagrams of the movable plate according to an embodiment of the present disclosure;

[0063] Figure 9B Schematically shows a second structural diagram of a movable plate according to an embodiment of the present disclosure;

[0064] Figure 9C Schematically shows one of the structural diagrams of a movable plate according to another embodiment of the present disclosure;

[0065] Figure 9D Schematically shows a second structural diagram of a movable plate according to another embodiment of the present disclosure;

[0066] Figure 10 A partial schematic diagram schematically shows a movable panel in an initial position according to an embodiment of the present disclosure;

[0067] Figure 11A Schematically shows one of the partial schematic views of the movable panel moving to the first position according to an embodiment of the present disclosure;

[0068] Figure 11B A second partial schematic diagram schematically illustrates the movable panel moving to the first position according to an embodiment of the present disclosure;

[0069] Figure 12A Schematically shows one of the partial schematic views of the movable panel moving to the second position according to an embodiment of the present disclosure;

[0070] Figure 12B A second partial schematic diagram schematically shows the movable panel moving to the second position according to an embodiment of the present disclosure;

[0071] Figure 13A Schematically shows one of the connection diagrams of the movable plate and the frame according to an embodiment of the present disclosure;

[0072] Figure 13BSchematically shows a second schematic diagram of the connection between the movable plate and the frame according to an embodiment of the present disclosure;

[0073] Figure 14 The schematic diagram of the structure of the heat dissipation system according to the embodiment of the present disclosure is shown;

[0074] Figure 15 The following schematically shows the structure of six monitoring modules of the heat dissipation system according to an embodiment of the present disclosure;

[0075] Figure 16A A schematic diagram showing a parallel circuit diagram of six monitoring modules of a heat dissipation system according to an embodiment of the present disclosure is shown;

[0076] Figure 16B Schematically shows one of the circuit diagrams of six monitoring modules of the heat dissipation system according to an embodiment of the present disclosure;

[0077] Figure 16C The second circuit diagram schematically shows six monitoring modules of the heat dissipation system according to an embodiment of the present disclosure;

[0078] Figure 16D The third circuit diagram schematically shows six monitoring modules of the heat dissipation system according to an embodiment of the present disclosure;

[0079] Figure 16E The fourth circuit diagram of the six monitoring modules of the heat dissipation system according to an embodiment of the present disclosure is schematically shown.

[0080] Reference numerals:

[0081] 10: Fan; 101: Air outlet side; 102: Air inlet side; 20: Monitoring module; 21: Movable plate; 211: Target circuit; 212: Conductive portion; 213: Rotating portion; 214: Plate; 22: Monitoring circuit; 221: First resistor; 222: Second resistor; 223: Partially conductive area; 23: Frame; 231: First support portion; 232: Second support portion; 233: Third support portion; 234: Accommodating slot; 24: Stopper; 25: Elastic member; 30: Target object;

[0082] 110: First fan; 120: Second fan; 130: Third fan; 140: Fourth fan; 150: Fifth fan; 160: Sixth fan; 210: First monitoring module; 220: Second monitoring module; 230: Third monitoring module; 240: Fourth monitoring module; 250: Fifth monitoring module; 260: Sixth monitoring module; 300: Cabinet. DETAILED DESCRIPTION

[0083] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0084] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise," "include," etc. used herein indicate the presence of the features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0085] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0086] The following combination Figure 1 to Figure 1 6 describes the heat dissipation device and heat dissipation system disclosed in the present invention.

[0087] In the embodiments of the present disclosure, Figures 1 to 4 As shown, the heat dissipation device includes a fan 10 and a monitoring module 20. The fan 10 has a heat dissipation channel. The monitoring module 20 is arranged on the target side of the heat dissipation channel and is used to monitor the installation status of the fan 10 when the fan 10 is working. The monitoring module 20 includes a monitoring circuit 22 and a movable plate 21. The movable plate 21 moves relative to the fan 10 when the fan 10 is working. When the fan 10 is in a first installation state, the movable plate 21 moves to a first position based on the airflow of the heat dissipation channel, and the monitoring circuit 22 is in a first electrical connection state; when the fan 10 is in a second installation state, the movable plate 21 moves to a second position based on the airflow of the heat dissipation channel, and the monitoring circuit 22 is in a second electrical connection state; the first electrical connection state is different from the second electrical connection state.

[0088] The heat dissipation device can be used in electronic equipment, household appliances, production workshops and other fields. For example, the heat dissipation device can be used in mobile phones, tablets, laptops, chassis, servers, industrial computers and the like. The fan 10 can be an axial flow fan, a cross-flow fan, a volute fan and the like. The fan 10 includes a shell and fan blades arranged in the shell. The shell has at least two openings, at least one opening for air intake and at least one opening for air outlet. The opening for air intake is defined as an air inlet, and the opening for air outlet is defined as an air outlet. The shell and the air inlet and air outlet arranged on the shell form a heat dissipation channel of the fan 10. The side where the air inlet is located is the air inlet side 102, and the side where the air outlet is located is the air outlet side 101. The target side of the heat dissipation channel can be the air inlet side 102 or the air outlet side 101. The fan 10 is used to dissipate heat for the target object 30. The fan blades are located in the heat dissipation channel. The rotation of the fan blades drives the air flow so that the heat dissipation airflow flows from the air inlet side 102 to the air outlet side 101.

[0089] The fan 10 has two installation states, defined as a first installation state and a second installation state. In the first installation state, the fan 10 is in the upright position, with the air outlet side 101 of the fan 10 facing the target object 30. Air discharged from the air outlet can dissipate heat from the target object 30. In the second installation state, the fan 10 is in the reverse position, with the air inlet side 102 of the fan 10 facing the target object 30. In this state, the target object 30 cannot be effectively cooled.

[0090] In some embodiments, as Figure 1 As shown, the fan 10 and the monitoring module 20 can be installed on a box body, and the box body includes a bottom plate and a plurality of side plates arranged on the bottom plate. For example, the number of side plates is four, and the first side plate and the second side plate are arranged opposite to each other, and one of the first side plate and the second side plate is provided with an opening that is compatible with the air inlet of the fan 10, and the other is provided with an opening that is compatible with the air outlet of the fan 10. The fan 10 can be fixed to the bottom plate by screwing, snapping, etc. The monitoring module 20 includes a movable plate 21 and a monitoring circuit 22. The movable plate 21 can also include a frame 23. The movable plate 21 can be movably mounted on the frame 23. The monitoring circuit 22 can be installed on the surface of the frame 23 or built into the frame 23. The frame 23 can be fixed to the first side plate or the second side plate by screwing, snapping, etc.

[0091] In some embodiments, as Figure 2 As shown, the monitoring module 20 is disposed in the heat dissipation path between the fan 10 and the target 30. The monitoring module 20 includes a movable plate 21 and a monitoring circuit 22. The monitoring module 20 may also include a frame 23. The frame 23 is opposite the air inlet side 102 or the air outlet side 101 of the fan 10, and the movable plate 21 is movably mounted on the frame 23.

[0092] The fan 10 and the monitoring module 20 are installed in the device. The monitoring module 20 is located on the target side of the heat dissipation channel. The monitoring module 20 includes a movable plate 21. The movable plate 21 is arranged adjacent to the fan 10. Depending on the installation state of the fan 10, the movable plate 21 is opposite to the air inlet side 102 or the air outlet side 101 of the fan 10. The movable plate 21 can be movably connected to the frame 23 by means of rotation, sliding, hinges, etc. When the fan 10 is installed upright, after the fan 10 is started, the airflow in the heat dissipation channel flows in the direction facing the movable plate 21, generating a certain blowing force on the movable plate 21; when the fan 10 is installed reversely, after the fan 10 is started, the airflow in the heat dissipation channel flows in the direction away from the movable plate 21, generating a certain adsorption force on the movable plate 21. The monitoring circuit 22 can be arranged on the surface of the frame 23 or built into the frame 23.

[0093] like Figure 4 As shown, the fan 10 is in a non-working state, and the movable plate 21 can be in a vertical state under the action of gravity, at which time the movable plate 21 is in the initial position. The vertical plane where the movable plate 21 is located in the initial position is defined as a reference plane, and the reference plane has a first side and a second side relative to each other. Driven by the wind flow, the movable plate 21 can move to the first side of the reference plane, that is, move to the first position; driven by the wind flow, the movable plate 21 can move to the second side of the reference plane, that is, move to the second position. In some embodiments, one end of the movable plate 21 can be rotatably connected to the frame 23, that is, an axial hole is provided on the frame 23, and one end of the movable plate 21 is rotatably connected to the axial hole. The movable plate 21 can be rotated to the first position under the blowing action of the wind flow, and the movable plate 21 can be rotated to the second position under the adsorption action of the wind flow.

[0094] In some embodiments, one end of the movable panel 21 can be slidably connected to the frame 23. That is, the frame 23 is provided with a slide groove, and one end of the movable panel 21 can slide within the slide groove. The movable panel 21 can slide to the first position under the action of wind, and can slide to the second position under the action of wind.

[0095] like Figure 3A As shown, when the movable plate 21 is opposite to the air outlet side 101 of the fan 10, the fan 10 is in working state, and the air discharged from the air outlet has a certain blowing effect on the movable plate 21, that is, the wind flow generated by the air flow enables the movable plate 21 to move to the first position. Figure 3B As shown, when the movable plate 21 is opposite to the air inlet side 102 of the fan 10, the fan 10 is in working state, and the generated wind flow has a certain adsorption effect on the movable plate 21, that is, the back pressure generated by the air flow has a certain adsorption force on the movable plate 21, so that the movable plate 21 can move to the second position.

[0096] In some embodiments, as Figure 5Aand Figure 5B As shown, the installation state of the fan 10 can be determined based on the on / off state of the monitoring circuit 22. The position of the movable plate 21 can trigger the monitoring circuit 22 to switch to the off state or the on state. For example, a switch can be provided in the monitoring circuit 22 to enable the monitoring circuit 22 to switch to the off state or the on state. The position of the switch is correlated with the position of the movable plate 21. For example, when the movable plate 21 moves to the first position, the switch switches to the off position; when the movable plate 21 moves to the second position, the switch switches to the on position.

[0097] When the movable plate 21 is opposite to the air outlet side 101 of the fan 10, the fan 10 is in operation, and the movable plate 21 rotates to the first position under the blowing action of the wind. Figure 5A As shown, the monitoring circuit 22 is switched to the disconnected state. The first electrical connection state includes the disconnected state. The disconnected state determines that the fan 10 is in the first installation state, that is, the fan 10 is installed upright.

[0098] When the movable plate 21 is opposite to the air inlet side 102 of the fan 10, the fan 10 is in operation, and the movable plate 21 rotates to the second position under the adsorption of the wind. Figure 5B As shown, the monitoring circuit 22 is switched to the conducting state. The second electrical connection state includes the conducting state, and the conducting state determines that the fan 10 is in the second installation state, that is, the fan 10 is installed backward.

[0099] After the fan 10 is started, the fan 10 can be determined to be in the first installation state or the second installation state based on whether the monitoring circuit 22 is in the open or closed state. The installation state of the fan 10 can be quickly determined by monitoring the electrical connection state of the monitoring circuit 22 without having to open the device's housing or chassis.

[0100] In some embodiments, as Figure 6 and Figure 7 As shown, the installation state of the fan 10 can be determined based on the conduction state of the monitoring circuit 22. For example, the monitoring circuit 22 is provided with two or more resistors, and the position of the movable plate 21 can trigger the multiple resistors in the monitoring circuit 22 to be in different conduction states. For example, two resistors are connected to the monitoring circuit 22.

[0101] When the movable plate 21 is opposite to the air outlet side 101 of the fan 10, the fan 10 is in operation, and the movable plate 21 rotates to the first position under the blowing action of the wind. Figure 6 As shown, both resistors in the monitoring circuit 22 are in the on state, the monitoring circuit 22 is in the first on state, the first electrical connection state includes the first on state, and the first on state determines that the fan 10 is in the first installation state.

[0102] When the movable plate 21 is opposite to the air inlet side 102 of the fan 10, the fan 10 is in operation, and the movable plate 21 rotates to the second position under the adsorption of the wind. Figure 7 As shown, one resistor in monitoring circuit 22 is in a conductive state, the other resistor is in a short-circuited state, and monitoring circuit 22 is in a second conductive state. The second electrical connection state includes the second conductive state, and the current value in the second conductive state is different from the current value in the first conductive state. The second conductive state determines that fan 10 is in the second installation state.

[0103] After the fan 10 is started, the fan 10 can be determined to be in the first installation state or the second installation state according to whether the monitoring circuit 22 is in the first conduction state or the second conduction state. This is convenient for quickly determining the installation state of the fan 10 without disassembling the device.

[0104] During device assembly, the fan 10 may be installed upside down. Alternatively, when reinstalling the fan 10 after repair, the fan 10 may also be installed upside down. The heat dissipation performance of a device is affected by many factors. If the device's heat dissipation performance is found to be degraded, disassembling the device to inspect whether the fan 10 is installed upside down is labor-intensive and time-consuming.

[0105] Under the influence of wind, the movable plate 21 can be moved to a first position, placing the monitoring circuit 22 in a first electrical connection state. Under the influence of wind, the movable plate 21 can be moved to a second position, placing the monitoring circuit 22 in a second electrical connection state. Based on the first or second electrical connection state of the monitoring circuit 22, it is possible to quickly determine whether the fan 10 is in the first or second installation state, facilitating convenient and efficient monitoring of the installation state of the fan 10. Furthermore, the movement direction of the movable plate 21 is correlated with the flow direction of the wind, accurately reflecting the installation state of the fan 10.

[0106] In an embodiment of the present disclosure, the movable plate 21 can be moved to a first position under the blowing action of the airflow of the fan 10, and the corresponding monitoring circuit 22 is in a first electrical connection state; the movable plate 21 can be moved to a second position under the adsorption action of the airflow of the fan 10, and the corresponding monitoring circuit 22 is in a second electrical connection state. According to the electrical connection state of the monitoring circuit 22, the installation status of the fan 10 is determined without disassembling the equipment, which is conducive to convenient and efficient monitoring of the installation status of the fan 10.

[0107] In the embodiments of the present disclosure, Figure 8A 、 Figure 8B 、 Figure 9A and Figure 9BAs shown, the movable plate 21 is provided with a target circuit 211. When the movable plate 21 is moved to a first position, the target circuit 211 is disconnected from the monitoring circuit 22. When the movable plate 21 is moved to a second position, the target circuit 211 is electrically connected to the monitoring circuit 22, so that the first electrical connection state is different from the second electrical connection state. The target side of the heat dissipation channel is at least one of the air inlet side 102 of the fan 10 and the air outlet side 101 of the fan 10.

[0108] The movable plate 21 may be in the shape of a rectangular parallelepiped, having a length direction and a width direction, with the two ends of the movable plate 21 along the width direction being defined as a first end and a second end, respectively. The first end is rotatably connected to the frame 23, while the second end is free, allowing the movable plate 21 to rotate to either the first position or the second position.

[0109] like Figure 9A and Figure 9B As shown, along the thickness direction of the movable plate 21, the movable plate 21 has a first surface and a second surface that oppose each other, with the first surface facing the fan 10. The movable plate 21 may be made of plastic, that is, the movable plate 21 may be made of a plastic material. The target circuit 211 may be a metal sheet or strip with good electrical conductivity, such as copper, aluminum, silver, or gold. The target circuit 211 may be secured to the first surface of the movable plate 21 near the second end of the movable plate 21 by screwing, riveting, or other means.

[0110] It is understood that when the fan 10 is turned off, the movable plate 21 is in an initial position due to gravity, and the initial position is between the first position and the second position. The monitoring circuit 22 is located on the second side of the reference surface. When the movable plate 21 is in the initial position, the monitoring circuit 22 is spaced a certain distance from the second end of the movable plate 21. The target circuit 211 and the monitoring circuit 22 are not in contact, that is, the target circuit 211 and the monitoring circuit 22 are not connected.

[0111] The fan 10 can be a fan that can rotate clockwise and counterclockwise, that is, the fan 10 can rotate forward or reverse, and the airflow direction of the fan 10 is different when rotating forward or reverse. The fan 10 has two openings, which are defined as a first opening and a second opening. When installed in the normal direction, the first opening is the air outlet, that is, the first opening is the air outlet side 101, and the second opening is the air inlet side 102. When installed in the reverse direction, the second opening is the air outlet, that is, the second opening is the air outlet side 101, and the first opening is the air inlet side 102.

[0112] In some embodiments, when the movable plate 21 is opposite to the first opening of the fan 10, the fan 10 is started and the movable plate 21 moves to the first position under the blowing action of the wind. Figure 8AAs shown, the target circuit 211 is away from the monitoring circuit 22, and the target circuit 211 is not connected to the monitoring circuit 22. The first electrical connection state includes the target circuit 211 and the monitoring circuit 22 being in a non-electrical connection state, that is, the monitoring circuit 22 is in a non-conductive state. The first electrical connection state determines that the fan 10 is in a forward rotation state. The fan 10 starts, and the movable plate 21 moves to the second position under the adsorption effect of the wind flow. Figure 8B As shown, the target circuit 211 is electrically connected to the monitoring circuit 22. The second electrical connection state includes that the target circuit 211 and the monitoring circuit 22 are in an electrically connected state, that is, the monitoring circuit 22 is in a conductive state. The second electrical connection state determines that the fan 10 is in a reverse state.

[0113] In some embodiments, when the movable plate 21 is opposite to the second opening of the fan 10, the fan 10 is started and the movable plate 21 moves to the second position under the adsorption effect of the wind flow. Figure 8B As shown, the target circuit 211 is electrically connected to the monitoring circuit 22. The second electrical connection state includes the target circuit 211 and the monitoring circuit 22 being electrically connected, that is, the monitoring circuit 22 is in a conducting state. The second electrical connection state determines that the fan 10 is in a reverse state. The fan 10 starts, and the movable plate 21 moves to the first position under the blowing action of the wind. Figure 8A As shown, the target circuit 211 is not connected to the monitoring circuit 22. The first electrical connection state includes the target circuit 211 and the monitoring circuit 22 being in a non-electrical connection state, that is, the monitoring circuit 22 is in a non-conducting state. The first electrical connection state determines that the fan 10 is in a forward rotation state.

[0114] A target circuit 211 is provided on the movable plate 21. When the movable plate 21 is moved to the first position or the second position, the electrical connection between the target circuit 211 and the monitoring circuit 22 differs. In the first position, the target circuit 211 and the monitoring circuit 22 are not electrically connected, while in the second position, the target circuit 211 and the monitoring circuit 22 are electrically connected. The different positions of the movable plate 21 result in different electrical connection between the target circuit 211 and the monitoring circuit 22. The position of the movable plate 21 is correlated with the direction of airflow from the fan 10, thereby enabling convenient, efficient, and accurate monitoring of whether the fan 10 is in the forward or reverse rotation state.

[0115] In an embodiment of the present disclosure, the flow direction of the airflow of the fan 10 is different in the forward rotation and reverse rotation conditions. When the fan 10 is started, the flow of air causes the movable plate 21 to move to the first position or the second position. At the two positions, the electrical connection status of the target circuit 211 and the monitoring circuit 22 on the movable plate 21 is different. Therefore, according to the first electrical connection status or the second electrical connection status, it is possible to conveniently, efficiently and accurately monitor whether the fan 10 is in the forward rotation state or the reverse rotation state.

[0116] In the embodiments of the present disclosure, Figure 3A 、 Figure 3B、 Figure 9A and Figure 9B As shown, the monitoring module 20 further includes a frame 23, with the movable plate 21 movably connected to the frame 23; at least a portion of the monitoring circuit 22 is disposed on the frame 23. When in a first position, the conductive portion 212 of the movable plate 21 is not in contact with the monitoring circuit 22, and the first electrical connection state includes the target circuit 211 being in an open state. When in a second position, the conductive portion 212 of the movable plate 21 is in contact with the monitoring circuit 22, and the second electrical connection state includes the target circuit 211 being in a conducting state.

[0117] The frame 23 can be a square frame having a length direction and a width direction. The frame 23 includes a first support portion 231 and a second support portion 232 spaced apart along the length direction, and a third support portion 233 and a fourth support portion spaced apart along the width direction. The four support portions are connected end to end to form the frame 23. Partial sections of the monitoring circuit 22 can be built into the frame 23. For example, through grooves are provided in the four support portions of the frame 23, and the monitoring circuit 22 can be placed in the through grooves. It is understood that at least a portion of the monitoring circuit 22 located on the frame 23 is exposed, so that the conductive portion 212 can contact the monitoring circuit 22.

[0118] In some embodiments, as Figure 9B As shown, the movable plate 21 has opposing first and second ends. A first axial hole is defined in the first support portion 231, and a second axial hole is defined in the second support portion 232. The first and second axial holes are coaxially arranged. The first and second ends of the first end are rotatably mounted in the first and second axial holes, respectively. The second end has a conductive portion 212 at each end. The projection of the conductive portion 212 on the frame 23 covers the exposed portion of the monitoring circuit 22. The conductive portion 212 is electrically connected to the target circuit 211.

[0119] The fan 10 is in the off state, the movable plate 21 is in the initial position, and the conductive portion 212 is in non-contact with the monitoring circuit 22. When the fan 10 is started, under the blowing of the wind, the movable plate 21 can rotate around the axis of the first and second shaft holes toward the side away from the fan 10, so that the movable plate 21 rotates to the first position. Figure 8A As shown, the conductive portion 212 is away from the monitoring circuit 22, the conductive portion 212 is not in contact with the monitoring circuit 22, and the target circuit 211 is not connected to the monitoring circuit 22, that is, the target circuit 211 is in an open circuit state. The first electrical connection state includes the target circuit 211 being in an open circuit state, and the open circuit state of the target circuit 211 determines that the fan 10 is in the first installation state, that is, the fan 10 is properly installed. The fan 10 is started, and under the adsorption effect of the wind flow, the movable plate 21 can rotate around the first axis hole and the second axis hole toward the side close to the fan 10, so that the movable plate 21 rotates to the second position. As shown Figure 8BAs shown, conductive portion 212 is in contact with monitoring circuit 22, and target circuit 211 is electrically connected to monitoring circuit 22, i.e., target circuit 211 is in a conductive state. The second electrical connection state includes target circuit 211 being in a conductive state. The conductive state of target circuit 211 determines that fan 10 is in a second installation state, i.e., fan 10 is installed in reverse.

[0120] In some embodiments, the movable plate 21 has a first end and a second end relative to each other. One end of the first end of the movable plate 21 is slidably connected to the first support portion 231, and the other end of the first end of the movable plate 21 is slidably connected to the second support portion 232. For example, the first support portion 231 is provided with a first chute, and the second support portion 232 is provided with a second chute, and the two ends of the first end are respectively located in the first chute and the second chute. The first chute and the second chute can be straight or have a certain curvature. The second end has a conductive portion 212 at each end, and the projection of the conductive portion 212 on the frame 23 can cover the exposed section of the monitoring circuit 22.

[0121] When the fan 10 is started, the movable plate 21 can slide along the first and second chutes toward the side away from the fan 10 under the action of the wind, so that the movable plate 21 slides to the first position, the conductive portion 212 is away from the monitoring circuit 22, the conductive portion 212 is not in contact with the monitoring circuit 22, and the target circuit 211 is not connected to the monitoring circuit 22, that is, the target circuit 211 is in an off-circuit state. The off-circuit state of the target circuit 211 determines that the fan 10 is in the first installation state. When the fan 10 is started, the movable plate 21 can slide along the first and second chutes toward the side closer to the fan 10 under the action of the wind, so that the movable plate 21 slides to the second position, the conductive portion 212 is in contact with the monitoring circuit 22, and the target circuit 211 is electrically connected to the monitoring circuit 22, that is, the target circuit 211 is in a on-circuit state. The on-circuit state of the target circuit 211 determines that the fan 10 is in the second installation state.

[0122] In an embodiment of the present disclosure, the contact state between the conductive part 212 and the monitoring circuit 22 is changed by movements such as rotation or sliding. When the two are not in contact, the target circuit 211 is in an open circuit state. When the two are in contact, the target circuit 211 is in an open circuit state. The open circuit state or the open circuit state of the target circuit 211 determines whether the fan 10 is in the first installation state or the second installation state. The contact state between the conductive part 212 and the monitoring circuit 22 can be adjusted by setting a simple structure, which is conducive to more convenient monitoring of the installation state of the fan 10.

[0123] In the embodiments of the present disclosure, Figure 6 and Figure 7As shown, the monitoring circuit 22 is connected to a first resistor 221 and a second resistor 222, and at least one of the first resistor 221 and the second resistor 222 can be in a conductive state. When in the first position, the first resistor 221 and the second resistor 222 are electrically connected to the monitoring circuit 22 and are in a conductive state. The first electrical connection state includes the monitoring circuit 22 being in the first conductive state. When in the second position, the movable plate 21 is electrically connected to the monitoring circuit 22 via the first resistor 221. The second electrical connection state includes the monitoring circuit 22 being in a second conductive state, which is different from the first conductive state.

[0124] The first resistor 221 and the second resistor 222 are located in different positions within the monitoring circuit 22. For example, the movable plate 21 is movably mounted on the frame 23, dividing the frame 23 into a first region and a second region along its width. The first resistor 221 is mounted in the first region, and the second resistor 222 is mounted in the second region.

[0125] like Figure 3A and Figure 6 As shown, when the movable plate 21 moves to the first position, the first resistor 221 and the second resistor 222 are both in the on state, and the direction of current flow is extending along the direction approximately along the first support part 231, the first resistor 221, the third support part 233, the second resistor 222 and the second support part 232, and the monitoring circuit 22 is in the first on state.

[0126] like Figure 3B and Figure 7 As shown, when the movable plate 21 moves to the second position, the branch where the second resistor 222 is located is short-circuited, and the movable plate 21 is electrically connected to the monitoring circuit 22 through the first resistor 221. The direction of current flow is along the direction of the partial section approximate to the first support part 231, the first resistor 221, the movable plate 21 and the partial section of the second support part 232, and the monitoring circuit 22 is in the second conduction state.

[0127] When the fan 10 is in the upright position, the fan 10 is started, the movable plate 21 moves to the first position, and the monitoring circuit 22 is in the first conductive state. When the fan 10 is in the reverse position, the fan 10 is started, the movable plate 21 moves to the second position, and the monitoring circuit 22 is in the second conductive state. The current value in the second conductive state is greater than the current value in the first conductive state.

[0128] The monitoring module 20 may further include a control module and an alarm module, with both the monitoring circuit 22 and the alarm module being communicatively connected to the control module. When the fan 10 is in the reversed position, the movable plate 21 moves to the second position under the adsorption effect of the fan 10, triggering a change in the current value of the monitoring circuit 22, for example, an increase in the current value. The control module receives the current value change signal, triggering the alarm module to sound an alarm.

[0129] In the embodiment of the present disclosure, the monitoring circuit 22 can switch between a first conduction state and a second conduction state according to the position of the movable plate 21. The current value in the second conduction state is greater than the current value in the first conduction state. The installation status of the fan 10 can be fed back more accurately and reliably according to the size of the current value.

[0130] In the embodiments of the present disclosure, Figure 10 、 Figure 11A 、 Figure 11B 、 Figure 12A and Figure 12B As shown, the monitoring module 20 also includes a connecting assembly, through which the movable plate 21 is movably connected to the frame 23. The connecting assembly includes a stopper 24, which is provided on two opposing support portions of the frame 23 and is located in the movable direction of the movable plate 21. When the fan 10 is in the first installation state, the movable plate 21 moves in a first position based on the airflow of the heat dissipation channel, and the movable plate 21 has a first movable angle. When the fan 10 is in the second installation state, the movable plate 21 moves from the first position to the second position based on the airflow of the heat dissipation channel, and the movable plate 21 has a second movable angle. The second movable angle is not greater than the first movable angle.

[0131] In some embodiments, as Figure 3B As shown, the frame 23 includes a first support portion 231 and a second support portion 232 disposed opposite each other. The movable panel 21 is rotatably connected to the first support portion 231 and the second support portion 232. The stopper 24 can be disposed on the inner wall surfaces of the first support portion 231 and the second support portion 232. The stopper 24 has a first side and a second side opposite each other, with the first side being away from the fan 10 and the second side being closer to the fan 10. The movable panel 21 can swing to a first movable angle on the first side of the stopper 24; the movable panel 21 can also swing from the first side of the stopper 24 to the second side of the stopper 24, with the movable panel 21 having a second movable angle.

[0132] like Figure 10 As shown, the fan 10 is in a closed state, the movable plate 21 is in an initial position, the movable plate 21 may be in a vertical state, and the movable plate 21 is located on a first side of the stopper 24 .

[0133] like Figure 11A and Figure 11BAs shown, when the fan 10 is in the first installation state, that is, the movable plate 21 is opposite to the air outlet side 101 of the fan 10, the airflow blown by the fan 10 after starting causes the movable plate 21 to swing on the first side of the stopper 24, and the movable plate 21 can swing to the first position. The movable plate 21 has a first movable angle. The first movable angle is related to the wind speed of the fan 10. The first movable angle is not specifically limited and can be 20 degrees, 30 degrees, 40 degrees, etc. When the movable plate 21 swings to the first position, the first resistor 221, the second resistor 222 and the monitoring circuit 22 are electrically connected, achieving a first conductive state. The first conductive state determines that the fan 10 is in the normal installation state.

[0134] like Figure 12A and Figure 12B As shown, when the fan 10 is in the second installation state, that is, the movable plate 21 is opposite to the air inlet side 102 of the fan 10, the adsorption force generated after the fan 10 is started enables the movable plate 21 to pass over the edge of the stopper 24 and swing toward the second side of the stopper 24. The movable part can swing to the second position, and the movable plate 21 has a second movable angle.

[0135] It is understood that at least one of the movable plate 21 and the stopper 24 is elastic and capable of slight deformation. For example, if the movable plate 21 is made of plastic, as the movable plate 21 swings toward the second side of the stopper 24, the edges of the movable plate 21 and the edges of the stopper 24 squeeze against each other, causing slight deformation of the movable plate 21, allowing the movable plate 21 to pass over the stopper 24 and swing to the second side of the stopper 24. When the movable plate 21 swings to the second position, the target circuit 211 and the monitoring circuit 22 are electrically connected, the second resistor 222 is short-circuited, and the first resistor 221 and the monitoring circuit 22 are electrically connected, achieving the second conduction state. The second conduction state determines that the fan 10 is in the reversed state.

[0136] If the stopper 24 is not provided, after the fan 10 is started, the fan 10 is in the upright position. Due to external factors such as shaking, the movable plate 21 may swing to the second position, resulting in erroneous monitoring results. By providing the stopper 24, the accuracy of the monitoring results can be improved.

[0137] The movable plate 21 is arranged near the fan 10, and the angle at which the movable plate 21 moves toward the side away from the fan 10 is a first movable angle, and the angle at which the movable plate 21 moves toward the side close to the fan 10 is a second movable angle. Since the space between the movable plate 21 and the fan 10 is limited, the second movable angle is smaller than the first movable angle, which can prevent the movable plate 21 from swinging too much toward the side close to the fan 10, causing the movable plate 21 and the fan 10 to collide with each other, thereby ensuring safety. In addition, the second movable angle is smaller, which can reduce the space occupied by the monitoring module 20, which is beneficial to the compactness of the overall structure of the heat dissipation device. In addition, the air flowing through the movable plate 21 also needs to dissipate heat to the target object 30. The first movable angle is greater than the second movable angle, which can reduce the influence of the movable plate 21 on the air volume of the air outlet, thereby ensuring the maximization of the air volume.

[0138] In the embodiment of the present disclosure, the movable plate 21 swings on the first side of the stopper 24 under the action of the blowing force, and can swing from the initial position to the first position. When the movable plate 21 swings to the first position, the monitoring circuit 22 is in the first conductive state. Under the action of the adsorption force, the movable plate 21 can swing from the first side of the stopper 24 to the second side of the stopper 24. When the movable plate 21 swings to the second position, the monitoring circuit 22 is in the second conductive state. Only when the movable plate 21 is displaced by the blowing force or the adsorption force can the monitoring circuit 22 switch to the first conductive state or the second conductive state, which can effectively avoid false monitoring and improve the accuracy of the monitoring results.

[0139] In the embodiments of the present disclosure, Figure 13A As shown, the two support parts can be deformed under the action of external force to increase the distance between the two stop members 24, so that the movable plate 21 can be switched from the second side of the stop member 24 to the first side of the stop member 24; or at least one of the two stop members 24 can be deformed under the action of external force to increase the distance between the two stop members 24, so that the movable plate 21 can be switched from the second side of the stop member 24 to the first side of the stop member 24.

[0140] The frame 23 is a square frame and includes a first support portion 231 and a second support portion 232 disposed opposite each other. The movable plate 21 may be approximately rectangular in shape, with a first end and a second end facing each other along its width. The first end of the movable plate 21 is pivotally connected to the first support portion 231 and the second support portion 232, respectively.

[0141] In some embodiments, two stoppers 24 are defined as a first stopper and a second stopper, respectively. The first stopper is mounted on the inner wall surface of the first support portion 231, and the second stopper is mounted on the inner wall surface of the second support portion 232. The first stopper and the second stopper are spaced apart by a first spacing. The length of the second end of the movable plate 21 is greater than the first spacing.

[0142] Under the adsorption effect of the fan 10, the movable plate 21 swings to the second side of the first stopper and the second stopper. After the fan 10 is turned off, the movable plate 21 needs to be reset from the second position to the initial position. The first support portion 231 and the second support portion 232 can be made of materials such as plastic and rubber, and have suitable elasticity and resilience. The first support portion 231 and the second support portion 232 can bend when stretched, and can return to the initial state after the external force disappears. For example, when opposite pulling forces are applied to the first support portion 231 and the second support portion 232, the first support portion 231 and the second support portion 232 bend outward, and the two stops 24 move away from each other, thereby increasing the first spacing. When the first spacing is greater than the length of the second end of the movable plate 21, the movable plate 21 can cross the gap between the first stopper and the second stopper, swinging from the second side of the stopper 24 to the first side of the stopper 24, and then the movable plate 21 can be reset to the initial position.

[0143] It is understandable that after the movable plate 21 is reset to the initial position, the movable plate 21 is located on the first side of the stopper 24. After the fan 10 is adjusted to its installation orientation, monitoring is continued until it is determined that the installation state of the fan 10 is the first installation state.

[0144] In some embodiments, a first stopper is mounted on the inner wall of the first support portion 231, and a second stopper is mounted on the inner wall of the second support portion 232. The first and second stoppers are spaced apart by a first spacing. The first and second stoppers can be made of materials such as plastic and rubber. The two stoppers 24 are capable of bending to a certain degree under external force and returning to their original state after the external force is removed. In the initial state, the first spacing is less than the length of the second end of the movable plate 21.

[0145] Under the adsorption effect of the fan 10, the movable plate 21 tends to swing toward the second side of the first and second stops. The two stops 24 are bent toward the side closer to the fan 10 by the impact force of the movable plate 21. When the first distance between the first and second stops is greater than the length of the second end of the movable plate 21, the movable plate 21 can swing across the gap between the first and second stops to the second side of the two stops 24. The movable plate 21 swings to the second position, and the first and second stops return to their initial state. After the fan 10 is turned off, the movable plate 21 needs to be reset from the second position to the initial position. A bending force is applied to the two stops 24 so that the first distance is greater than the length of the second end of the movable plate 21. The movable plate 21 can swing across the gap between the first and second stops and swing from the second side of the stop 24 to the first side of the stop 24, thereby returning the movable plate 21 to its initial position.

[0146] In an embodiment of the present disclosure, when the movable plate 21 moves to the second position, the first support portion 231 and the second support portion 232 are stretched, or the two stop members 24 are bent to increase the distance between the two stop members 24, so that the movable plate 21 can be reset from the second side of the stop member 24 to the first side of the stop member 24, which is convenient to operate.

[0147] In the embodiments of the present disclosure, Figure 13B As shown, the connection assembly includes an elastic member 25, through which the movable plate 21 is rotatably connected to the frame 23. The elastic member 25 can provide a restoring force under the action of an external force applied by the movable plate 21. The movable plate 21 is rotated to the first position based on the airflow in a first direction through the heat dissipation channel, or is rotated to the second position based on the airflow in a second direction through the heat dissipation channel, the second direction being opposite to the first direction.

[0148] In some embodiments, the first end of the movable panel 21 is rotatably connected to the first support portion 231 and the second support portion 232 of the frame 23. The second end of the movable panel 21 may be connected to the frame 23 via an elastic member 25. For example, one end of the elastic member 25 is connected to the movable panel 21, and the other end of the elastic member 25 is connected to the support portion. The elastic member 25 may include a spring, a spring, a torsion spring, a compression spring, or other elastic member 25 capable of expansion and contraction. The movable panel 21 is in its initial position, and the elastic member 25 is in its natural state.

[0149] When fan 10 is in the first installation state and is activated, airflow from the heat dissipation channel in a first direction acts on movable plate 21, causing movable plate 21 to rotate to the first position. During this rotation, movable plate 21 exerts a certain tension on elastic member 25. When movable plate 21 rotates to the first position, elastic member 25 is in the first tensioned state, extending to the first extension. When fan 10 is deactivated, the rebound force of elastic member 25 causes it to return to its natural state, and movable plate 21 returns to its initial position under the action of gravity and the rebound force.

[0150] The fan 10 is in the second installation state. After the fan 10 is started, the airflow in the second direction of the heat dissipation channel generates a certain suction force on the movable plate 21, allowing the movable plate 21 to rotate to the second position. During the rotation of the movable plate 21, a certain tension is applied to the elastic member 25. When the movable plate 21 rotates to the second position, the elastic member 25 is in a second tension state, and the elastic member 25 extends to a second extension, which is less than the first extension. After the fan 10 is turned off, the rebound force of the elastic member 25 causes the elastic member 25 to return to its natural state. During the transition from the second tension state to the natural state, the elastic member 25 generates a certain rotational force on the movable plate 21, allowing the movable plate 21 to pass through the gap between the first stop 24 and the second stop 24 and rotate to the first side of the two stops 24. The elastic member 25 returns to its natural state, and the movable plate 21 returns to its initial position.

[0151] In the embodiment of the present disclosure, the movable panel 21 is rotatably connected to the frame 23 via an elastic member 25. The elastic member 25 exerts a certain pulling force on the movable panel 21. The suction force generated by the wind must overcome the pulling force of the elastic member 25 on the movable panel 21 before the movable panel 21 can rotate to the second position. The resilience of the elastic member 25 allows the movable panel 21 to tend to return to its natural state. When the movable panel 21 rotates to the second side of the stop member 24, the resilience of the elastic member 25 allows the movable panel 21 to pass the stop member 24 and rotate to the first side of the stop member 24 after the fan 10 is turned off, facilitating the convenient reset of the movable panel 21.

[0152] In the embodiment of the present disclosure, as shown in FIG9A, FIG9B, Figure 11A 、 Figure 11B 、 Figure 12A 、 Figure 12B 、 Figure 13A and Figure 13B As shown, the frame 23 is provided with a receiving groove 234, and a portion of the conductive area 223 of the monitoring circuit 22 is exposed at the receiving groove 234, and the portion of the conductive area 223 is located in the direction of movement of the movable plate 21. The movable plate 21 includes a plate body 214 and a rotating portion 213. The plate body 214 has a target circuit 211. The rotating portion 213 is provided at a first end of the plate body 214 and is rotatably connected to the frame 23. The second end of the rotating portion 213 and / or the plate body 214 has a conductive portion 212 electrically connected to the target circuit 211. The monitoring module 20 also includes an alarm module. When the monitoring circuit 22 is in the second electrical connection state, the alarm module can issue an alarm message.

[0153] like Figure 3BAs shown, the frame 23 includes a first support portion 231, a second support portion 232, a third support portion 233, and a fourth support portion. Interconnected through-grooves can be provided in the first support portion 231, the second support portion 232, and the third support portion 233, so that portions of the monitoring circuit 22 can be placed in the through-grooves along the extending direction of the first support portion 231, the third support portion 233, and the second support portion 232. Placing portions of the monitoring circuit 22 in the frame 23 can save space occupied by the monitoring circuit 22.

[0154] As shown in Figures 9A, 9B, and 13A, the plate body 214 can be shaped like a rectangular parallelepiped, with a first end and a second end opposite each other along the width of the plate body 214. A rotating portion 213 is provided at the first end of the plate body 214, i.e., a rotating portion 213 is connected to each of the two ends of the first end of the plate body 214. The two rotating portions 213 are defined as a first rotating portion and a second rotating portion, respectively. The first rotating portion is rotatably connected to the first support portion 231, and the second rotating portion is rotatably connected to the second support portion 232. The two rotating portions 213 can be integrally formed with the plate body 214.

[0155] like Figure 11B and Figure 12B As shown, a receiving groove 234 can be formed by recessing one surface of the first support portion 231 toward the other opposing surface. The size of the receiving groove 234 is set according to actual needs. The receiving groove 234 can accommodate the stopper 24, which is only a portion of the movable plate 21. It is understood that the second support portion 232 also has a receiving groove 234. The receiving grooves 234 on the first and second support portions 231, 232 have the same structure. The receiving groove 234 communicates with the through-groove, allowing a portion of the conductive area 223 located in the through-groove to be exposed.

[0156] In some embodiments, the stopper 24 can be mounted on a wall surface of the receiving slot 234. The partially conductive region 223 is located on a second side of the stopper 24 and abuts against a wall surface of the receiving slot 234. A conductive portion 212 is connected to each of the two ends of the second end of the plate 214. The conductive portion 212 is cylindrical and electrically connected to the target circuit 211. The partially conductive region 223 is located in the direction of movement of the conductive portion 212.

[0157] like Figure 12A and Figure 12BAs shown, the airflow in the heat dissipation channel along the second direction generates a certain adsorption force on the movable plate 21, and the two rotating parts 213 rotate to make the movable plate 21 swing to the second side of the stopper 24. The angle of rotation of the movable plate 21 is the second movable angle. The movable plate 21 rotates to the second position. At this time, one conductive part 212 contacts the partial conductive area 223 at the first support part 231, and the other conductive part 212 contacts the partial conductive area 223 at the second support part 232, thereby electrically connecting the target circuit 211 to the monitoring circuit 22, and the monitoring circuit 22 is in the second electrical connection state.

[0158] like Figure 9C and Figure 9D As shown, in some embodiments, each of the two ends of the first end of the plate 214 is connected to a rotating portion 213, defining the two rotating portions 213 as a first rotating portion and a second rotating portion. The first support portion 231 is provided with a first axial hole, and the first rotating portion is rotatably connected to the first axial hole. The partially conductive area 223 of the monitoring circuit 22 is located on a portion of the hole wall of the first axial hole. The second support portion 232 is provided with a second axial hole, and the second rotating portion is rotatably connected to the second axial hole. The partially conductive area 223 of the monitoring circuit 22 is located on a portion of the hole wall of the second axial hole.

[0159] Both the first rotating portion and the second rotating portion are provided with a conductive portion 212. For example, the first rotating portion is used as an example for explanation. The conductive portion 212 is located in a partial area of ​​the first rotating portion. For example, when the movable plate 21 is in its initial position, the conductive portion 212 is located on a surface below the center plane of the first rotating portion. When the movable plate 21 is in its initial position, the conductive portion 212 does not contact the partially conductive area 223. When the fan 10 is installed upright, the movable plate 21 rotates to the first position under the influence of the airflow. The conductive portion 212 gradually moves away from the partially conductive area 223 and does not contact the partially conductive area 223. The monitoring circuit 22 is in a first electrically connected state. When the fan 10 is installed reversely, the movable plate 21 rotates to the second position under the influence of the airflow. The rotation of the first and second rotating portions causes the conductive portion 212 to change its position within the shaft hole, allowing the conductive portion 212 to contact the partially conductive area 223. This electrically connects the target circuit 211 to the monitoring circuit 22, and the monitoring circuit 22 is in a second electrically connected state.

[0160] When the fan 10 is in the upright position, the movable plate 21 is opposite to the air outlet side 101 of the fan 10, and the fan 10 starts. Under the blowing action of the wind, the movable plate 21 rotates to the first position to meet the normal air outlet demand. When the fan 10 is in the upright position, the movable plate 21 is opposite to the air inlet side 102 of the fan 10, and the fan 10 starts. Under the adsorption action of the wind, the movable plate 21 rotates to the first position to meet the normal air inlet demand. When the fan 10 is in the upright position, regardless of whether the movable plate 21 is installed on the air inlet side 102 or the air outlet side 101 of the fan 10, under the action of the wind, the movable plate 21 will rotate to the first position to meet the normal air outlet demand or air inlet demand. When the movable plate 21 is in the first position, the conductive portion 212 on the movable plate 21 does not contact the partial conductive area 223 of the monitoring circuit 22, and the target circuit 212 is in an open circuit state.

[0161] When the fan 10 is in the reversed state, the movable plate 21 is opposite to the air inlet side 102 of the fan 10, and the fan 10 is started. Under the adsorption effect of the wind flow, the movable plate 21 rotates to the second position. When the fan 10 is in the reversed state, the movable plate 21 is opposite to the air outlet side 101 of the fan 10, and the fan 10 is started. Under the blowing effect of the wind flow, the movable plate 21 rotates to the second position. When the movable plate 21 is in the second position, the conductive portion 212 on the movable plate 21 can contact the partial conductive area 223 of the monitoring circuit 22, so that the target circuit 211 is electrically connected to the monitoring circuit 22. When the target circuit 211 is electrically connected to the monitoring circuit 22, the alarm module will be triggered to alarm.

[0162] The alarm module includes an alarm, a warning light, and other features. The alarm can notify personnel of the fan 10's installation status through voice prompts, light cues, and other means. For example, if the monitoring circuit 22 is in the second electrical connection state, the alarm will issue a voice prompt stating "Fan 10 installed backwards." For example, if the monitoring circuit 22 is in the second electrical connection state, the warning light will illuminate red, indicating that the fan 10 is installed backwards.

[0163] In an embodiment of the present disclosure, a receiving groove 234 is provided on the frame 23, and the partially conductive area 223 of the monitoring circuit 22 is exposed from the receiving groove 234. A groove wall surface of the receiving groove 234 can limit the second movable angle of the movable plate 21, and prevent the second movable angle from being too large, which causes the movable plate 21 to collide with the blades, housing, etc. of the fan 10, thereby ensuring safety. In addition, the partially conductive area 223 is exposed from the receiving groove 234, and the groove wall surface of the receiving groove 234 can effectively support the partially conductive area 223. The movable plate 21 rotates to the second position, ensuring that the conductive portion 212 and the partially conductive area 223 are in firm contact, ensuring the reliability of the electrical connection between the target circuit 211 and the monitoring circuit 22, and ensuring the stability of the second electrical connection state, thereby helping to improve the accuracy of the monitoring results.

[0164] It is understood that the monitoring module 20 may include a plurality of movable plates 21, and the plurality of movable plates 21 are spaced apart and arranged on the frame 23 along the width direction of the frame 23. For example, Figure 1 、 Figure 2 、 Figure 3A and Figure 3B As shown, there are six movable plates 21, which are spaced apart along the width direction of the frame 23. One of the movable plates 21 is provided with a target circuit 211. For example, the movable plate 21 with the target circuit 211 is installed in the middle area of ​​the frame 23.

[0165] When the fan 10 is closed, the multiple movable panels 21 are in a vertical state. The multiple movable panels 21 can block the air inlet or air outlet of the fan 10 to prevent impurities from entering the interior of the fan 10.

[0166] When fan 10 is activated and the airflow blows, multiple movable plates 21 rotate to the same angle. When multiple movable plates 21 rotate to the first position, movable plates 21 with target circuit 211 are not in contact with monitoring circuit 22. Monitoring circuit 22 is in the first conductive state, confirming that fan 10 is in the normal state. Rotating multiple movable plates 21 to the first position not only monitors the status of fan 10 but also avoids affecting the air output of fan 10, thereby ensuring maximum air output of fan 10.

[0167] The fan 10 is started, and under the adsorption effect of the wind flow, the multiple movable plates 21 can rotate at the same angle. The multiple movable plates 21 rotate to the second position, and the movable plate 21 with the target circuit 211 contacts the monitoring circuit 22. The monitoring circuit 22 is in the second conduction state, and it is determined that the fan 10 is in the reverse installation state.

[0168] like Figure 14 and Figure 15 As shown, the present disclosure also provides a heat dissipation system, which includes a housing 300 and a plurality of heat dissipation devices. The housing 300 has a receiving cavity, and the plurality of heat dissipation devices are arranged in the receiving cavity. The heat dissipation device includes a fan 10 and a monitoring module 20. The fan 10 has a heat dissipation channel, and the monitoring module 20 is arranged on the target side of the heat dissipation channel, and is used to monitor the installation status of the fan 10 when the fan 10 is working. The monitoring module 20 includes a monitoring circuit 22 and a movable plate 21, and the movable plate 21 moves relative to the fan 10 when the fan 10 is working. When the fan 10 is in a first installation state, the movable plate 21 moves to a first position based on the airflow of the heat dissipation channel, and the monitoring circuit 22 is in a first electrical connection state; when the fan 10 is in a second installation state, the movable plate 21 moves to a second position based on the airflow of the heat dissipation channel, and the monitoring circuit 22 is in a second electrical connection state; the first electrical connection state is different from the second electrical connection state.

[0169] The heat dissipation system can be applied to devices such as laptop computers, computer chassis, servers, and industrial computers. Devices that require high-efficiency heat dissipation are usually equipped with multiple fans 10. The heat dissipation system includes components such as fans 10, monitoring modules 20, power supply modules, and control modules. Multiple components are usually installed in a box 300, so that the heat dissipation system can be modularized and at the same time protect the fans 10, monitoring modules 20, components, etc. It can be understood that the area on the box 300 opposite to the air inlet side 102 and the air outlet side 101 of the fan 10 is open. The monitoring module 20 can be installed on a box wall of the box 300. The number of fans 10 is set according to actual needs, and the number of fans 10 can be two, more than one, etc. The number of monitoring modules 20 is the same as the number of fans 10.

[0170] In some embodiments, the number of fans is two, and the two fans are defined as a first fan 110 and a second fan 120. The number of monitoring modules is two, and the two monitoring modules are defined as a first monitoring module 210 and a second monitoring module 220. When the two fans are started at the same time, if the heat dissipation performance decreases, the installation status of the two fans can be determined based on the monitoring results of the two monitoring modules. The structure and working principle of the monitoring module 20 are as described above and will not be described in detail here.

[0171] After the cooling system is started, the first fan 110 can be judged to be in the normal state or the reverse state according to whether the monitoring circuit 22 of the first monitoring module 210 is in the first electrical connection state or the second electrical connection state. The first electrical connection state monitored by the first monitoring module 210 determines that the first fan 110 is in the normal state, and the second electrical connection state monitored by the first monitoring module 210 determines that the first fan 110 is in the reverse state. The second fan 120 can be judged to be in the normal state or the reverse state according to whether the monitoring circuit 22 of the second monitoring module 220 is in the first electrical connection state or the second electrical connection state. The first electrical connection state monitored by the second monitoring module 220 determines that the second fan 120 is in the normal state, and the second electrical connection state monitored by the second monitoring module 220 determines that the second fan 120 is in the reverse state.

[0172] If the first and second fans 110, 120 are installed correctly, the operator can be prompted to investigate other factors to determine the cause of the reduced heat dissipation performance. This allows the operator to inspect the installation status of the two fans without disassembling the device. If the first and second fans 110, 120 are installed backwards, the alarm module can sound an alarm, prompting the operator to check whether the first and second fans 110, 120 are installed backwards.

[0173] In some embodiments, as Figure 14 and Figure 15As shown, there are six fans, which are defined as a first fan 110, a second fan 120, a third fan 130, a fourth fan 140, a fifth fan 150, and a sixth fan 160. There are six monitoring modules, which are defined as a first monitoring module 210, a second monitoring module 220, a third monitoring module 230, a fourth monitoring module 240, a fifth monitoring module 250, and a sixth monitoring module 260.

[0174] The six fans can operate independently, meaning their on / off status is controlled by six control modules. If cooling performance degrades while all six fans are running, the installation status of the six fans can be determined based on the monitoring results of the six monitoring modules.

[0175] After the cooling system is started, the movable plates 21 of the six monitoring modules are respectively moved to the first position or the second position. Based on whether the monitoring circuit 22 of the first monitoring module 210 is in the first electrical connection state or the second electrical connection state, it can be determined whether the first fan 110 is in the normal state or the reverse state. Based on whether the monitoring circuit 22 of the second monitoring module 220 is in the first electrical connection state or the second electrical connection state, it can be determined whether the second fan 120 is in the normal state or the reverse state. Similarly, based on whether the monitoring circuit 22 of the sixth monitoring module 260 is in the first electrical connection state or the second electrical connection state, it can be determined whether the sixth fan 160 is in the normal state or the reverse state.

[0176] In an embodiment of the present disclosure, the heat dissipation system includes multiple fans, and a monitoring module is provided on the target side of the heat dissipation channel of each fan. According to whether the monitoring circuit 22 of each monitoring module is in the first electrical connection state or the second electrical connection state, it is determined whether the corresponding fan is in the normal installation state or the reverse installation state. This is conducive to quickly monitoring the installation status of multiple fans without disassembling the equipment, which is conducive to reducing the disassembly and assembly workload and alleviating the workload of the staff.

[0177] In an embodiment of the present disclosure, the resistance value of any monitoring module is different from the resistance values ​​of other monitoring modules; the monitoring circuits of multiple monitoring modules form a parallel circuit; and the installation status of multiple fans is determined based on the current value of the parallel circuit.

[0178] Taking six fans as an example, the monitoring circuits 22 corresponding to the six fans are defined as a first monitoring circuit, a second monitoring circuit, a third monitoring circuit, a fourth monitoring circuit, a fifth monitoring circuit, and a sixth monitoring circuit.

[0179] In some embodiments, as Figure 15As shown, six monitoring modules are arranged in parallel, and the first support parts 231 and the second support parts 232 of two adjacent frames 23 are aligned. The six frames 23 can be integrally formed by injection molding. The first support parts 231 and the second support parts 232 of two adjacent frames 23 can also be connected by screwing or clamping.

[0180] The parallel arrangement of the six frames 23 prevents gaps between adjacent frames 23, thus preventing external airflow from entering the cooling system through the gaps between adjacent frames 23 and backflowing to the six fans, thereby ensuring the cooling performance of the cooling system. Furthermore, the parallel arrangement of the six monitoring circuits only requires one of the two monitoring modules at the ends to serve as the input of the parallel circuit, and the other as the output. This saves space on the monitoring circuits and facilitates their rational layout.

[0181] In some embodiments, the six monitoring circuits 22 are all connected to a first resistor, which is represented by Rc. The six monitoring circuits 22 are also connected to a second resistor, and the resistance value of the second resistor in each monitoring circuit 22 is different. The second resistor in the first monitoring circuit is represented by R1, the second resistor in the second monitoring circuit is represented by R2, the second resistor in the third monitoring circuit is represented by R3, the second resistor in the fourth monitoring circuit is represented by R4, the second resistor in the fifth monitoring circuit is represented by R5, and the second resistor in the sixth monitoring circuit is represented by R6. R1, R2, R3, R4, R5, and R6 are different. It can be understood that when the number of fans is greater than 6, the second resistor of any monitoring circuit 22 is represented by R i Indicates that i can be 1, 2, 3, 4, 5, 6, 7, etc.

[0182] like Figure 16AAs shown, in some embodiments, six monitoring circuits can form a parallel circuit. The first monitoring circuit is connected to resistors Rc and R1, the second monitoring circuit is connected to resistors Rc and R2, the third monitoring circuit is connected to resistors Rc and R3, the fourth monitoring circuit is connected to resistors Rc and R4, the fifth monitoring circuit is connected to resistors Rc and R5, and the sixth monitoring circuit is connected to resistors Rc and R6. After the cooling system is started, the installation status of each fan can be determined based on the current value. The input voltage of the six monitoring circuits is U. When any fan is installed in the forward or reversed position, the corresponding monitoring circuit has different resistance values ​​after the fan is started. The resistance value of the first monitoring circuit corresponding to the first fan 110 can be (Rc + R1) or Rc. The resistance value of the second monitoring circuit corresponding to the second fan 120 can be (Rc + R2) or Rc. The resistance value of the third monitoring circuit corresponding to the third fan 130 can be (Rc + R3) or Rc. The resistance value of the fourth monitoring circuit corresponding to the fourth fan 140 can be (Rc + R4) or Rc. The resistance value of the fifth monitoring circuit corresponding to the fifth fan 150 may be (Rc+R5) or Rc. The resistance value of the fifth monitoring circuit corresponding to the sixth fan 160 may be (Rc+R6) or Rc.

[0183] The total resistance of the six monitoring circuits is R, and the current value is calculated by I=U / R. The installation status of the six fans is determined based on this current value. The total resistance value varies depending on whether a fan is installed in the forward or reverse position. The installation status of the six fans is determined by monitoring the total current at the output terminals, a single current value. If one or more fans are installed in the reverse position, the cooling system has multiple cooling conditions, each corresponding to a different current value in the parallel circuit.

[0184] It is understood that the cooling system also includes a control module, a determination module, and an alarm module, all of which are in communication with the control module. Based on the changes in the current values ​​of the parallel circuit composed of the six monitoring circuits, the determination module receives the current signal from the parallel circuit and, based on the current changes, determines the specific location of the reversely installed fan. The control module then transmits a signal indicating the reversed fan position to the control module. The control module receives the signal, triggering the alarm module to issue an alarm message indicating the specific location of the reversed fan, thereby enabling rapid location of the fault.

[0185] For example, the circuit diagram of six fans in the normal installation state is as follows Figure 16B The circuit diagram of six fans in reverse installation is shown in Figure 16C The circuit diagram of the first fan 110 in reverse installation and the other fans in normal installation is shown in FIG. Figure 16D The first fan 110 and the second fan 120 are in reverse installation, and the remaining fans are in normal installation. Figure 16E As shown in the figure, the current value of each circuit diagram is different. According to the change of the current value, the fault position can be quickly located.

[0186] In some embodiments, the six monitoring circuits are independent of each other, and the installation status of the fan can be determined based on the current value of each monitoring circuit. The voltage applied to each monitoring circuit is U, and the currents of the six monitoring circuits are represented by I i Indicates that i can be 1, 2, 3, 4, 5, 6, etc.

[0187] For example, if the current value I1 monitored by the first monitoring circuit is equal to U / (Rc + R1), the first fan 110 is determined to be in the first installation state. If the current value I1 monitored by the first monitoring circuit is equal to U / Rc, the first fan 110 is determined to be in the second installation state. Similarly, if the current value I6 monitored by the sixth monitoring circuit is equal to U / (Rc + R6), the sixth fan 160 is determined to be in the first installation state. If the current value I6 monitored by the sixth monitoring circuit is equal to U / Rc, the sixth fan 160 is determined to be in the second installation state.

[0188] In the disclosed embodiment, multiple monitoring circuits are connected in parallel. The resistance value of each monitoring circuit is different when the fan is installed in the normal state. Therefore, if one or more of the multiple fans is installed in the reverse state, the total resistance value of the parallel circuits is different. By monitoring the total current value of a parallel circuit, the position of the fan installed in the reverse state can be determined, and the alarm module can be triggered to issue an alarm message, prompting staff to check. Connecting multiple monitoring circuits in parallel helps reduce the number of monitoring points. Based on the total current value of the parallel circuits, the installation status of any fan can be monitored and the fault location can be quickly located to ensure the heat dissipation performance of the cooling system.

[0189] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of this disclosure may be combined and / or coupled in various ways, even if such combinations and / or couplings are not explicitly described in this disclosure. In particular, the features described in the various embodiments and / or claims of this disclosure may be combined and / or coupled in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or couplings are intended to fall within the scope of this disclosure.

[0190] Although the present disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined not only by the appended claims but also by the equivalents of the appended claims.

Claims

1. A heat dissipation device, comprising: A fan with a heat dissipation channel; a monitoring module, provided on the target side of the heat dissipation channel, for monitoring the installation status of the fan when the fan is in operation; The monitoring module includes: Monitoring circuit; a movable plate, wherein the movable plate moves relative to the fan when the fan is in operation; When the fan is in the first installation state, the movable plate moves to the first position based on the airflow of the heat dissipation channel, and the monitoring circuit is in the first electrical connection state; When the fan is in the second installation state, the movable plate moves to the second position based on the airflow of the heat dissipation channel, and the monitoring circuit is in the second electrical connection state; the first electrical connection state is different from the second electrical connection state.

2. The heat dissipation device according to claim 1, The movable plate is provided with a target circuit, and when the movable plate moves to the first position, the target circuit is disconnected from the monitoring circuit; when the movable plate moves to the second position, the target circuit is electrically connected to the monitoring circuit, so that the first electrical connection state is different from the second electrical connection state; The target side of the heat dissipation channel is at least one of the fan air inlet side and the fan air outlet side.

3. The heat dissipation device according to claim 2, The monitoring module further includes a frame, and the movable plate is movably connected to the frame; At least part of the monitoring circuit is disposed on the frame; When in the first position, the conductive portion of the movable plate is in non-contact with the monitoring circuit, and the first electrical connection state includes the target circuit being in an open circuit state; When in the second position, the conductive portion of the movable plate is in contact with the monitoring circuit, and the second electrical connection state includes the target circuit being in a conductive state.

4. The heat dissipation device according to claim 3, The monitoring circuit is connected to a first resistor and a second resistor, and at least one of the first resistor and the second resistor can be in a conductive state; in, When in the first position, the first resistor and the second resistor are electrically connected to the monitoring circuit and are in a conductive state, and the first electrical connection state includes the monitoring circuit being in a first conductive state; When in the second position, the movable plate is electrically connected to the monitoring circuit through the first resistor. The second electrical connection state includes the monitoring circuit being in a second conductive state, which is different from the first conductive state.

5. The heat dissipation device according to claim 3, The monitoring module further includes a connecting assembly, and the movable plate is movably connected to the frame via the connecting assembly; The connecting assembly includes a stopper, which is provided on two opposite supporting parts of the frame and is located in the movable direction of the movable plate; When the fan is in the first installation state, the movable plate is located on the first side of the stopper based on the airflow of the heat dissipation channel and can be moved to the first position, and the movable plate has a first movable angle; When the fan is in the second installation state, the movable plate moves from the first side of the stopper to the second side of the stopper based on the airflow of the heat dissipation channel and is capable of moving to the second position, and the movable plate has a second movable angle; The second active angle is not greater than the first active angle.

6. The heat dissipation device according to claim 5, The two support portions can be deformed under the action of an external force to increase the distance between the two stoppers, so that the movable plate can be switched from the second side of the stopper to the first side of the stopper; or At least one of the two stoppers can be deformed under the action of an external force to increase the distance between the two stoppers, so that the movable plate can be switched from the second side of the stopper to the first side of the stopper.

7. The heat dissipation device according to claim 5, The connecting assembly includes an elastic member, the movable plate is rotatably connected to the frame via the elastic member, and the elastic member can provide a restoring force under the external force applied by the movable plate; The movable plate is rotated to the first position based on the wind flow in the first direction of the heat dissipation channel, or the movable plate is rotated to the second position based on the wind flow in the second direction of the heat dissipation channel; The second direction is opposite to the first direction.

8. The heat dissipation device according to any one of claims 3 to 7, The frame is provided with a receiving groove, and a partial conductive area of ​​the monitoring circuit is exposed from the receiving groove, and the partial conductive area is located in the movement direction of the movable plate; The movable plate comprises: a board having the target circuit; a rotating portion, provided at a first end of the plate body and rotatably connected to the frame, wherein the rotating portion or a second end of the plate body has a conductive portion electrically connected to the target circuit; The monitoring module further includes an alarm module, and when the monitoring circuit is in the second electrical connection state, the alarm module can issue an alarm message.

9. A heat dissipation system comprising: A box body having a receiving cavity; A plurality of heat dissipation devices are provided in the accommodating cavity; Wherein, the heat dissipation device comprises: A fan with a heat dissipation channel; a monitoring module, provided on the target side of the heat dissipation channel, for monitoring the installation status of the fan when the fan is in operation; The monitoring module includes: Monitoring circuit; a movable plate, wherein the movable plate moves relative to the fan when the fan is in operation; When the fan is in the first installation state, the movable plate moves to the first position based on the airflow of the heat dissipation channel, and the monitoring circuit is in the first electrical connection state; When the fan is in the second installation state, the movable plate moves to the second position based on the airflow of the heat dissipation channel, and the monitoring circuit is in the second electrical connection state; the first electrical connection state is different from the second electrical connection state.

10. The heat dissipation system according to claim 9, The resistance value of any of the monitoring modules is different from the resistance values ​​of the other monitoring modules; The monitoring circuits of the plurality of monitoring modules form a parallel circuit; The installation status of the plurality of fans is determined based on the current value of the parallel circuit.

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