A computer room ventilation control method and ventilation equipment based on Internet of Things

Abstract

The present invention discloses a computer room ventilation control method and ventilation equipment based on the Internet of Things, and relates to the field of ventilation control technology; in order to solve the problem of comprehensive control; specifically includes the following steps: obtaining the temperature and humidity in the computer room and the pressure difference inside and outside the computer room; using control logic to control the power of the ventilation equipment: ①: the higher the temperature, the higher the ventilation power of the ventilation equipment; ②: the higher the humidity, the higher the ventilation power of the ventilation equipment; ③: the greater the pressure difference inside and outside, the lower the ventilation power of the ventilation equipment; the ventilation equipment is connected to the monitoring end for communication. The present invention controls the ventilation power of the ventilation equipment by combining the temperature and humidity in the computer room and the pressure difference inside and outside the computer room, thereby ensuring reliable temperature and humidity control, and also achieving energy-saving effect, while also preventing the ventilation equipment from being damaged and increasing the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation control, and in particular to a ventilation control method for a computer room based on the Internet of Things and ventilation equipment thereof. Background Art

[0002] The computer room has certain requirements for the environment, especially the ambient temperature and humidity. When the temperature is too high, the electrical components will not work normally. When the humidity is too high, it will cause risks such as leakage and short circuit. Therefore, ventilation equipment is needed to ventilate the computer room, so as to use airflow to cool down and control humidity.

[0003] After searching, the Chinese patent publication number CN205825352U discloses an automatic control device for ventilation equipment in a machine room, including a starting control component and a frequency converter; the starting control component includes a starting intermediate relay K1 electrically connected to the frequency converter, and the starting intermediate relay K1 is also electrically connected to the unit in the machine room, and the starting intermediate relay K1 controls the start and stop of the frequency converter according to the start and stop of the unit; the frequency converter is also electrically connected to the ventilation equipment for controlling the operation of the ventilation equipment.

[0004] The above patent has the following deficiencies: it is unable to automatically adjust the ventilation power of the ventilation equipment according to the temperature and humidity in the machine room and the pressure difference between the inside and outside of the machine room, so that the control effect has certain limitations.

[0005] To this end, the present invention proposes a computer room ventilation control method and ventilation equipment based on the Internet of Things. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a computer room ventilation control method and ventilation equipment based on the Internet of Things.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A ventilation control method for a computer room based on the Internet of Things.

[0009] The following steps are involved:

[0010] S1: Obtain the temperature and humidity in the equipment room and the pressure difference between the inside and outside of the equipment room;

[0011] S2: Use control logic to control the power of ventilation equipment:

[0012] ①: The higher the temperature, the higher the ventilation power of the ventilation equipment;

[0013] ②: The higher the humidity, the higher the ventilation power of the ventilation equipment;

[0014] ③: The greater the internal and external pressure difference, the lower the ventilation power of the ventilation equipment;

[0015] S3: Connect the ventilation equipment to the monitoring end, and transmit the ventilation data as well as the temperature, humidity, and pressure difference data to the monitoring end for detection in real time.

[0016] A computer room ventilation device based on the Internet of Things comprises a fixed shell fixed to a ventilation passage, wherein a negative pressure driving part for driving air is arranged inside the fixed shell, and grilles are fixed to the end faces of the fixed shell on both sides of the negative pressure driving part, and a comprehensive sensing driving part for sensing the temperature and humidity in the computer room and the pressure difference between inside and outside the computer room and controlling the power of the negative pressure driving part is arranged on the side wall of the fixed shell.

[0017] Furthermore: the negative pressure driving unit includes a fixed frame, a connecting tube, a rotating frame and a plurality of fan blades, the fixed frame is fixed to the inner wall of the fixed shell, the rotating frame is rotatably connected to the inner wall of the fixed frame through the connecting tube, and the plurality of fan blades are rotatably connected to the side wall of the rotating frame in a circular display.

[0018] On the basis of the above scheme: the inner wall of the fixed frame is fixedly embedded with an electric motor, the output shaft of the electric motor is connected to gear one through a key, gear one is meshed with the outer wall of the connecting tube, the end face of the rotating frame is rotatably connected to gear two, and the side wall of the fan blade is fixed with gear three meshing with gear two.

[0019] A better solution in the above solution is: the gear 2 is rotatably connected to the rotating frame through the sector block, and the axis of the rotating frame is equipped with a driving cylinder through a key-shaped protrusion gap, the end surface of the driving cylinder is fixed with a permanent magnet 1, one side of the permanent magnet 1 is equipped with an electromagnet 1, and the electromagnet 1 is fixed to the inner wall of the fixed frame;

[0020] The inner wall of the driving cylinder is rotatably connected with a transition block, the end surface of the transition block is buckled with a spring 1, and the other end of the spring 1 is buckled with the inner wall of the fixing frame.

[0021] As a further solution of the present invention: a spiral groove is provided on the inner wall of the sector block, and a limiting protrusion which is movably limited and matched with the spiral groove is fixed on the outer wall of the driving cylinder.

[0022] At the same time, the rotation and contraction direction of the fan blades is opposite to the working rotation direction of the rotating frame.

[0023] As a preferred embodiment of the present invention, the comprehensive induction drive unit includes a humidity-sensitive resistor and a thermistor fixed to the outer wall of a fixed shell located on one side of the machine room, and an induction drive mechanism penetrating and embedded in the inner wall of the fixed shell.

[0024] At the same time, the induction drive mechanism includes a cylinder body fixedly embedded in the inner wall of the fixed shell and a piston slidably connected to the inner wall of the cylinder body. The outer wall of the piston on one side outside the machine room is buckled with a second spring, and the other end of the second spring is buckled with the inner wall of the cylinder body. A second permanent magnet is fixed on the other side of the piston, and a second electromagnet matched with the second permanent magnet is fixed on the inner wall of the cylinder body. The second electromagnet is connected to the same circuit as the humidity resistor and the thermistor.

[0025] When the humidity is higher, the resistance of the humidity-sensitive resistor is smaller, and when the temperature is higher, the resistance of the thermistor is smaller.

[0026] As a better solution of the present invention: the integrated induction drive unit also includes a magnetic core fixed to the inner wall of the fixed shell, and the outer walls on both sides of the magnetic core are respectively wound with a secondary coil and a primary coil, the primary coil is electrically connected to the AC power supply, one end of the secondary coil is electrically connected to one of the terminals of the motor, the top of the secondary coil contacts and is electrically matched with an elastic electrode head 1, the elastic electrode head 1 is electrically connected to the other terminal of the motor, and the side wall of the secondary coil is fixed with an insulating frame, and the insulating frame is fixed to the side wall of the piston by bolts.

[0027] The beneficial effects of the present invention are:

[0028] 1. The present invention uses a comprehensive control logic to control the ventilation power of the ventilation equipment by combining the temperature and humidity in the machine room and the pressure difference between the inside and outside of the machine room, thereby ensuring reliable temperature and humidity control while also achieving energy-saving effects, while also preventing the ventilation equipment from being damaged and increasing its service life.

[0029] 2. The present invention provides rotatable blades so that when an animal or a person crawls into the fixed shell or extends his or her limbs and contacts the rotating blades, the blades can be quickly retracted, thereby increasing safety in use.

[0030] 3. In the present invention, since the rotation of the fan blades has a certain resistance, when the fan blades are rotated and retracted, this part of the resistance can provide a contraction driving force, thereby increasing the contraction speed, and its reverse contraction can also offset part of the rotation speed driven by the rotating frame, thereby further reducing the harm and improving safety.

[0031] 4. The present invention cleverly designs the circuit of the electromagnet 1 so that the electromagnet 1 can be automatically powered on after the living body contacts the fan blades. Compared with the control of the sensor + algorithm, the delay is lower and the safety protection effect is better.

[0032] 5. The present invention, by setting up a comprehensive induction drive unit, can realize the sensing of temperature and humidity based on the hysteresistor and thermistor, thereby combining with the elastic electrode head, the secondary coil and the primary coil to realize the function of automatically controlling the power of the motor according to the temperature, humidity and pressure difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of a computer room ventilation device based on the Internet of Things proposed by the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of a negative pressure driving part of a computer room ventilation device based on the Internet of Things proposed by the present invention;

[0035] Figure 3 This is a schematic diagram of the matching structure of a rotating frame and a driving cylinder of a machine room ventilation device based on the Internet of Things proposed by the present invention;

[0036] Figure 4 This is a schematic diagram of the spiral groove and limiting protrusion structure of a computer room ventilation device based on the Internet of Things proposed by the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of a comprehensive induction drive unit of a computer room ventilation device based on the Internet of Things proposed by the present invention;

[0038] Figure 6 This is a schematic cross-sectional structural diagram of an induction drive mechanism of a computer room ventilation device based on the Internet of Things proposed by the present invention;

[0039] Figure 7 This is a schematic diagram of the structure of an electric slip ring and an elastic electrode head of a machine room ventilation device based on the Internet of Things proposed by the present invention;

[0040] Figure 8 This is a cross-sectional structural schematic diagram of a negative pressure driving part of a computer room ventilation device based on the Internet of Things proposed by the present invention;

[0041] Fig. 9 A schematic diagram of the motor circuit structure of a computer room ventilation device based on the Internet of Things proposed by the present invention;

[0042] Fig.10 This is a schematic diagram of the electromagnet circuit structure of a computer room ventilation device based on the Internet of Things proposed by the present invention.

[0043] In the figure: 1, fixed shell; 2, integrated induction drive unit; 3, negative pressure drive unit; 4, grille; 5, fixed frame; 6, motor; 7, gear one; 8, connecting cylinder; 9, rotating frame; 10, gear two; 11, gear three; 12, fan blade; 13, key-shaped protrusion; 14, fan-shaped block; 15, permanent magnet one; 16, electromagnet one; 17, spring one; 18, transition block; 19, driving cylinder; 20, spiral groove; 21, limit protrusion; 22, induction drive mechanism; 23, humidity-sensitive resistor; 24, thermistor; 25, insulating frame; 26, cylinder body; 27, electromagnet two; 28, permanent magnet two; 29, piston; 30, spring two; 31, elastic electrode head one; 32, secondary coil; 33, primary coil; 34, magnetic core; 35, electric slip ring; 36, elastic electrode head two. DETAILED DESCRIPTION

[0044] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] Embodiment 1:

[0047] A computer room ventilation control method based on the Internet of Things comprises the following steps:

[0048] S1: Obtain the temperature and humidity in the equipment room and the pressure difference between the inside and outside of the equipment room;

[0049] S2: Use control logic to control the power of ventilation equipment:

[0050] ①: The higher the temperature, the higher the ventilation power of the ventilation equipment;

[0051] ②: The higher the humidity, the higher the ventilation power of the ventilation equipment;

[0052] ③: The greater the internal and external pressure difference, the lower the ventilation power of the ventilation equipment;

[0053] S3: Connect the ventilation equipment to the monitoring end, and transmit the ventilation data as well as the temperature, humidity, and pressure difference data to the monitoring end for detection in real time.

[0054] The purpose of pressure difference control is that during ventilation, the pressure difference in the machine room will be lower than the atmospheric pressure. When the pressure difference between the two is too large, it will cause a large load on the ventilation equipment, and long-term high-load operation will damage the ventilation equipment.

[0055] This device controls the ventilation power of the ventilation equipment by combining the temperature and humidity in the machine room and the pressure difference between the inside and outside of the machine room with a comprehensive control logic. This can not only ensure reliable temperature and humidity control, but also save energy, prevent damage to the ventilation equipment and increase its service life.

[0056] Embodiment 2:

[0057] A computer room ventilation device based on the Internet of Things, such as Figure 1-Figure 8 As shown, it includes a fixed shell 1 fixed to the ventilation channel, and a negative pressure driving part 3 for driving air is arranged inside the fixed shell 1, and grilles 4 are fixed on the end faces of the fixed shell 1 on both sides of the negative pressure driving part 3, and the side wall of the fixed shell 1 is provided with a comprehensive sensing driving part 2 for sensing the temperature and humidity in the machine room and the pressure difference between the inside and outside of the machine room and controlling the power of the negative pressure driving part 3.

[0058] The negative pressure driving unit 3 includes a fixed frame 5, a connecting tube 8, a rotating frame 9 and a plurality of blades 12, wherein the fixed frame 5 is fixed to the inner wall of the fixed shell 1, the rotating frame 9 is rotatably connected to the inner wall of the fixed frame 5 through the connecting tube 8, and the plurality of blades 12 are rotatably connected to the side wall of the rotating frame 9 in a circular display manner, and a motor 6 is fixedly embedded in the inner wall of the fixed frame 5, and the output shaft of the motor 6 is connected to a gear 7 through a key, and the gear 7 is meshed with the outer wall of the connecting tube 8;

[0059] When the motor 6 is started, it can drive the gear 7 to rotate, thereby driving the connecting tube 8 and the rotating frame 9 to rotate, thereby driving the fan blades 12 to rotate along the axis of the rotating frame 9, disturbing the air and realizing the ventilation function.

[0060] To address security issues such as Figure 2-4 As shown, the end surface of the rotating frame 9 is rotatably connected to the gear 2 10, and the side wall of the fan blade 12 is fixed with a gear 3 11 meshing with the gear 2 10; when the gear 2 10 rotates, it can drive the gear 3 11 to rotate, thereby driving the fan blade 12 to rotate, so that the fan blade 12 contracts.

[0061] The gear 2 10 is rotatably connected to the rotating frame 9 through the fan-shaped block 14, and a driving cylinder 19 is gap-fitted with the key-shaped protrusion 13 at the axis of the rotating frame 9, and a permanent magnet 15 is fixed to the end face of the driving cylinder 19, and an electromagnet 16 is fitted on one side of the permanent magnet 15, and the electromagnet 16 is fixed to the inner wall of the fixed frame 5.

[0062] The inner wall of the driving cylinder 19 is rotatably connected with a transition block 18 , the end surface of the transition block 18 is buckled with a spring 17 , and the other end of the spring 17 is buckled with the inner wall of the fixing frame 5 .

[0063] The inner wall of the sector block 14 is provided with a spiral groove 20 , and the outer wall of the driving cylinder 19 is fixed with a limiting protrusion 21 that is movably limited and matched with the spiral groove 20 .

[0064] When in use, if an animal or human limb crawls into the fixed shell 1 and reaches in, and contacts the rotating blades 12, the electromagnet 16 is energized to generate suction, thereby generating a pulling force on the limiting protrusion 21 through the permanent magnet 15, and the drive cylinder 19 overcomes the elastic force of the spring 17 and moves axially, so that the gear 2 10 rotates relative to the rotating frame 9 through the cooperation between the spiral groove 20 and the drive cylinder 19, and the fan blades 12 are quickly retracted to the end face of the rotating frame 9.

[0065] The device is provided with rotatable blades 12, so that when an animal or a person crawls into the fixed shell 1 or extends his or her limbs and contacts the rotating blades 12, the blades 12 can be quickly retracted, thereby increasing the safety of use.

[0066] The rotation and contraction direction of the fan blades 12 is opposite to the working rotation direction of the rotating frame 9; since the rotation of the fan blades 12 has a certain resistance, when the fan blades 12 are rotated and contracted, this part of the resistance can provide a contraction driving force, thereby increasing the contraction speed, and its reverse contraction can also offset part of the rotation speed driven by the rotating frame 9, thereby further reducing the harm and improving safety.

[0067] The side wall of the fixed frame 5 is fixed with an electric slip ring 35, and the side wall of the rotating frame 9 is fixed with an elastic electrode head 2 36 that contacts and electrically cooperates with the electric slip ring 35, the elastic electrode head 2 36 is electrically connected to the fan blade 12, the electric slip ring 35 is electrically connected to the electromagnet 16, and the electromagnet 16 is connected to the positive pole of the external power supply;

[0068] When the fan blade 12 is touched, due to the conductivity of the living body, the positive pole of the power supply-electromagnet 16-electric slip ring 35-elastic electrode head 2 36-fan blade 12-living body-earth or fixed shell 1 is connected to form a loop, so that the electromagnet 16 is charged.

[0069] This device cleverly designs the circuit of the electromagnet 16 so that after the living body contacts the fan blade 12, the electromagnet 16 can be automatically energized. Compared with the control of sensor + algorithm, it has lower delay and better safety protection effect.

[0070] To solve the sensing and power control problems, such as Figure 5-7 As shown, the integrated induction drive unit 2 includes a humidity-sensitive resistor 23 and a thermistor 24 fixed to the outer wall of the fixed shell 1 located on the inner side of the machine room, and an induction drive mechanism 22 penetrating and embedded in the inner wall of the fixed shell 1.

[0071] The induction drive mechanism 22 includes a cylinder body 26 fixedly embedded in the inner wall of the fixed shell 1 and a piston 29 slidably connected to the inner wall of the cylinder body 26. The outer wall of the piston 29 on one side outside the machine room is buckled with a spring 230, and the other end of the spring 230 is buckled with the inner wall of the cylinder body 26. A permanent magnet 28 is fixed to the other side of the piston 29. An electromagnet 27 cooperating with the permanent magnet 28 is fixed to the inner wall of the cylinder body 26. The electromagnet 27 is connected to the same circuit as the humidity-sensitive resistor 23 and the thermistor 24.

[0072] When the humidity is higher, the resistance of the humidity-sensitive resistor 23 is smaller, and when the temperature is higher, the resistance of the thermistor 24 is smaller.

[0073] The integrated induction drive unit 2 also includes a magnetic core 34 fixed to the inner wall of the fixed shell 1, and the outer walls on both sides of the magnetic core 34 are respectively wound with a secondary coil 32 and a primary coil 33, the primary coil 33 is electrically connected to the AC power supply, one end of the secondary coil 32 is electrically connected to one of the terminals of the motor 6, the top of the secondary coil 32 contacts and electrically cooperates with an elastic electrode head 31, and the elastic electrode head 31 is electrically connected to the other terminal of the motor 6, and the side wall of the secondary coil 32 is fixed with an insulating frame 25, and the insulating frame 25 is fixed to the side wall of the piston 29 by bolts.

[0074] When the temperature or humidity in the machine room increases, the resistance of thermistor 24 or humidity resistor 23 will decrease, thereby increasing the current of electromagnet 27 and the field strength of electromagnet 27, which increases the magnetic repulsion of permanent magnet 28. Piston 29 will move to the right, thereby causing elastic electrode head 1 31 to move to the right. At this time, the number of turns of secondary coil 32 connected to the circuit increases, thereby increasing the voltage and power of motor 6, and vice versa. When the pressure difference between indoor and outdoor increases, piston 29 will be affected by the increased negative pressure in the room and move to the left, thereby reducing the power, reducing the indoor gas exhaust speed, and gradually recovering.

[0075] The device, by setting up a comprehensive induction drive unit 2, can realize the sensing of temperature and humidity based on the hygroscopic resistor 23 and the thermistor 24, and thus, in combination with the elastic electrode head 31, the secondary coil 32, and the primary coil 33, it can realize the function of automatically controlling the power of the motor 6 according to the temperature, humidity, and pressure difference.

[0076] When the present embodiment is in use, when the motor 6 is started, it can drive the gear 7 to rotate, thereby driving the connecting tube 8 and the rotating frame 9 to rotate, thereby driving the fan blades 12 to rotate along the axis of the rotating frame 9, disturbing the air and realizing the ventilation function. When in use, if an animal or a person's limbs crawl into the fixed shell 1 and touch the rotating fan blades 12, due to the conductivity of the living body, the positive pole of the power supply-electromagnet 16-electric slip ring 35-elastic electrode head 2 36-fan blades 12-living body-earth or fixed shell 1 is connected to form a loop, so that the electromagnet 16 is charged. At this time, the electromagnet 16 is energized to generate suction, thereby generating a pulling force on the driving cylinder 19 through the permanent magnet 15. The driving cylinder 19 overcomes the elastic force of the spring 17 and moves axially, thereby passing through the spiral groove 2 0 cooperates with the driving cylinder 19 to make the gear 2 10 rotate relative to the rotating frame 9, and the fan blades 12 are quickly retracted to the end surface of the rotating frame 9. In addition, when the temperature in the machine room rises or the humidity increases, the resistance of the thermistor 24 or the resistance of the hygroscopic resistor 23 will decrease, thereby increasing the current of the electromagnet 27, and the field strength of the electromagnet 27 increases, so that the magnetic repulsion force on the permanent magnet 28 increases, and the piston 29 moves to the right, thereby causing the elastic electrode head 1 31 to move to the right. At this time, the number of turns of the secondary coil 32 connected to the circuit increases, thereby increasing the voltage of the motor 6 and the power, and vice versa. When the indoor and outdoor pressure difference increases, the piston 29 is subjected to the increase of the indoor negative pressure, so that it moves to the left, thereby reducing the power, reducing the indoor gas exhaust speed, and gradually recovering.

[0077] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A computer room ventilation device based on the Internet of Things, characterized in that: The invention comprises a fixed shell (1) fixed to a ventilation passage, wherein a negative pressure driving unit (3) for driving air is arranged inside the fixed shell (1), and grilles (4) are fixed to the end surfaces of the fixed shell (1) on both sides of the negative pressure driving unit (3), and a comprehensive sensing driving unit (2) for sensing the temperature and humidity in the machine room and the pressure difference between the inside and outside of the machine room and controlling the power of the negative pressure driving unit (3) is arranged on the side wall of the fixed shell (1); The negative pressure driving unit (3) comprises a fixed frame (5), a connecting tube (8), a rotating frame (9) and a plurality of fan blades (12); the fixed frame (5) is fixed to the inner wall of the fixed shell (1); the rotating frame (9) is rotatably connected to the inner wall of the fixed frame (5) via the connecting tube (8); and the plurality of fan blades (12) are rotatably connected to the side wall of the rotating frame (9) in a circular display manner; Gear 2 (10) is rotatably connected to the rotating frame (9) via a sector block (14), and a driving cylinder (19) is gap-fitted at the axis of the rotating frame (9) via a key-shaped protrusion (13), a permanent magnet 1 (15) is fixed to the end surface of the driving cylinder (19), an electromagnet 1 (16) is fitted to one side of the permanent magnet 1 (15), and the electromagnet 1 (16) is fixed to the inner wall of the fixed frame (5); The integrated induction drive unit (2) comprises a humidity-sensitive resistor (23) and a thermistor (24) fixed to an outer wall of a fixed shell (1) located on an inner side of a machine room, and an induction drive mechanism (22) penetrating and embedded in an inner wall of the fixed shell (1); The induction drive mechanism (22) comprises a cylinder (26) fixedly embedded in the inner wall of the fixed shell (1) and a piston (29) slidably connected to the inner wall of the cylinder (26); a second spring (30) is buckled on the outer wall of the piston (29) located outside the machine room; the other end of the second spring (30) is buckled on the inner wall of the cylinder (26); a second permanent magnet (28) is fixed on the other side of the piston (29); a second electromagnet (27) matched with the second permanent magnet (28) is fixed on the inner wall of the cylinder (26); the second electromagnet (27) is connected to the same circuit as the humidity-sensitive resistor (23) and the thermistor (24); When the humidity is higher, the resistance value of the humidity-sensitive resistor (23) is smaller, and when the temperature is higher, the resistance value of the thermistor (24) is smaller; The integrated induction drive unit (2) further comprises a magnetic core (34) fixed to the inner wall of the fixed shell (1), the outer walls on both sides of the magnetic core (34) are respectively wound with a secondary coil (32) and a primary coil (33), the primary coil (33) is electrically connected to an AC power source, one end of the secondary coil (32) is electrically connected to one of the terminals of the motor (6), the top of the secondary coil (32) contacts and electrically cooperates with an elastic electrode head (31), the elastic electrode head (31) is electrically connected to the other terminal of the motor (6), and the side wall of the secondary coil (32) is fixed with an insulating frame (25), and the insulating frame (25) is fixed to the side wall of the piston (29) by bolts; The inner wall of the sector block (14) is provided with a spiral groove (20), and the outer wall of the driving cylinder (19) is fixed with a limiting protrusion (21) that is movably limited and matched with the spiral groove (20); When an animal or a person crawls into the fixed housing (1) and extends his or her limbs into the fixed housing (1) and contacts the rotating blades (12), the electromagnet (16) is automatically energized due to the conductivity of the living body. The electromagnet (16) is energized to generate suction, and the permanent magnet (15) generates a pulling force on the limit protrusion (21). The drive cylinder (19) overcomes the elastic force of the spring (17) and moves axially. The spiral groove (20) cooperates with the drive cylinder (19) to rotate the gear (10) relative to the rotating frame (9), and the blades (12) are retracted to the end surface of the rotating frame (9).

2. The computer room ventilation equipment based on the Internet of Things according to claim 1 is characterized in that: The inner wall of the fixed frame (5) is fixedly embedded with a motor (6), the output shaft of the motor (6) is connected to a gear 1 (7) via a key, the gear 1 (7) is meshed with the outer wall of the connecting tube (8), the end surface of the rotating frame (9) is rotatably connected to a gear 2 (10), the side wall of the fan blade (12) is fixed with a gear 3 (11) meshed with the gear 2 (10), and the inner wall of the driving tube (19) is rotatably connected to a transition block (18), the end surface of the transition block (18) is buckled with a spring 1 (17), and the other end of the spring 1 (17) is buckled with the inner wall of the fixed frame (5).

3. The computer room ventilation equipment based on the Internet of Things according to claim 1 is characterized in that: The rotational contraction direction of the fan blades (12) is opposite to the working rotational direction of the rotating frame (9).

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