Mute sensor fan

Abstract

The utility model relates to the technical field of mute fans, in particular to a mute sensor fan, which comprises a lower shell, an upper shell is clamped on the lower shell, a PCB (printed circuit board) used for controlling operation of the fan is fixedly connected in the lower shell, one end of the PCB is fixedly connected with a wiring guide pin, the other end of the PCB is fixedly connected with a power connection guide rod, and the end part of the power connection guide rod is fixedly connected with a sensor. A fan base is rotatably connected between the upper shell and the lower shell, a center cylinder is fixedly connected to the middle of the end, away from the lower shell, of the upper shell, and the sensor is located in the center cylinder. The fan base rotates between the upper shell and the lower shell through the electromagnetic induction principle and the Hall effect, the sensor detects the rotating speed of the fan in real time, the rotating speed of the fan base is controlled through the power connection guide rod and the PCB, the rotating speed of the fan is intelligently controlled in real time, the rotating speed is controlled within a certain range, and the mute effect of the fan is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of silent fans, in particular to a silent sensor fan. Background Art

[0002] Silent fans reduce noise by reducing vibration, reducing rotation speed, and optimizing motors, making the fan nearly silent, thereby improving the user experience of the fan.

[0003] Existing silent fans, such as the low-pressure silent fan proposed in patent application number "CN202122394968.5", use structures such as a bottom shell, a coil, a fixing rod, a sound insulation ring, and a buffer spring. The sound insulation ring can absorb the noise generated by the friction between the outer shell and the coil when the outer shell rotates, and the buffer spring can buffer the vibration generated when the fan blades rotate, thereby reducing the noise generated by the vibration.

[0004] However, it cannot effectively and intelligently control the fan speed. When the fan blades rotate, the blades rub or impact with the air, thereby generating noise. The faster the blades rotate, the higher the frequency of contact with the air and the sharper the noise. The fan silent effect needs to be improved. Therefore, a silent sensor fan is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a silent sensor fan to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A silent sensor fan comprises a lower shell, an upper shell is clamped on the lower shell, a PCB board for controlling the operation of the fan is fixedly connected in the lower shell, a wiring guide pin is fixedly connected to one end of the PCB board, an electrical connection rod is fixedly connected to the other end of the PCB board, a sensor is fixedly connected to the end of the electrical connection rod, a fan seat is rotatably connected between the upper shell and the lower shell, a center tube is fixedly connected to the middle of one end of the upper shell away from the lower shell, and the sensor is located in the center tube.

[0008] Preferably, a stator is fixedly connected to the middle of the lower shell, the stator is electrically connected to the PCB board, a magnetic ring is rotatably connected to the outside of the stator, the magnetic ring and the stator are magnetically matched, a magnetic sleeve is fixedly connected to the outside of the magnetic ring, the fan seat is fixed to the magnetic sleeve, and the magnetic sleeve and the magnetic ring are located inside the fan seat.

[0009] Preferably, a bayonet is provided on the side wall of the central tube, the bayonet is shaped as an "L" shape, the shape of the connecting rod is shaped as an "L" shape, the end of the connecting rod is engaged with the bayonet, and the fan seat is aligned with the center of the central tube.

[0010] Preferably, a plurality of groups of pins are fixedly connected to one end of the stator close to the lower shell, and the plurality of groups of pins are fixedly connected to the PCB board. A junction box is fixedly connected to a side of the lower shell away from the upper shell, and one end of the junction guide pin is located in the junction box.

[0011] Preferably, the side wall of the lower shell is fixedly connected with a plurality of groups of card plates, the side wall of the upper shell is provided with a plurality of groups of card slots, and the plurality of groups of card plates are respectively engaged with the plurality of groups of card slots.

[0012] Preferably, the side wall of the lower shell is fixedly connected with a plurality of groups of limit blocks, and the plurality of groups of limit blocks are all in abutment with one end of the upper shell.

[0013] Beneficial effects of the utility model:

[0014] The utility model utilizes the electromagnetic induction principle and the Hall effect through the fan seat to rotate between the upper shell and the lower shell. The sensor detects the fan speed in real time, controls the rotation speed of the fan seat through the connected conductive rod and the PCB board, and intelligently controls the fan speed in real time to control the speed within a certain range, thereby effectively improving the fan's silent effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall explosion structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the central tube structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the fan seat structure of the utility model;

[0021] The reference numerals in the figures are as follows:

[0022] 1. Lower shell; 2. Upper shell; 3. PCB board; 4. Wiring guide pins; 5. Card board; 6. Card slot; 7. Stator; 8. Pins; 9. Magnetic ring; 10. Magnetic sleeve; 11. Fan seat; 12. Electrical connecting rod; 13. Sensor; 14. Center tube; 15. Bayonet; 16. Limit block; 17. Junction box. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] A silent sensor fan, such as Figure 1-Figure 5 As shown, it includes a lower shell 1, an upper shell 2 is clamped on the lower shell 1, a PCB board 3 for controlling the operation of the fan is fixedly connected in the lower shell 1, a wiring guide pin 4 is fixedly connected to one end of the PCB board 3, an electrical connection rod 12 is fixedly connected to the other end of the PCB board 3, a sensor 13 is fixedly connected to the end of the electrical connection rod 12, a fan seat 11 is rotatably connected between the upper shell 2 and the lower shell 1, a center tube 14 is fixedly connected to the middle of one end of the upper shell 2 away from the lower shell 1, and the sensor 13 is located in the center tube 14.

[0025] The fan housing is formed by snapping the upper shell 2 and the lower shell 1 together, and fan blades are arranged on the side walls of the fan seat 11. The wiring guide pins 4 are connected to the outside to connect electricity to the PCB board 3. The PCB board 3 is connected to electricity to control the fan seat 11 to rotate between the upper shell 2 and the lower shell 1 by utilizing the electromagnetic induction principle and the Hall effect. The rotation of the fan seat 11 drives the surrounding air to flow, and the flowing air reaches the vicinity of the sensor 13 through the central tube 14. The sensor 13 detects the fan speed in real time through the air flow speed, and controls the rotation speed of the fan seat 11 through the electrical connection rod 12 and the PCB board 3. The fan speed is intelligently controlled in real time to control the speed within a certain range, thereby effectively improving the fan mute effect.

[0026] A stator 7 is fixedly connected to the middle of the lower shell 1, and the stator 7 is electrically connected to the PCB board 3. A magnetic ring 9 is rotatably connected to the outside of the stator 7, and the magnetic ring 9 is magnetically matched with the stator 7. A magnetic sleeve 10 is fixedly connected to the outside of the magnetic ring 9, and a fan seat 11 is fixed to the magnetic sleeve 10. The magnetic sleeve 10 and the magnetic ring 9 are located inside the fan seat 11.

[0027] like Figure 1 and Figure 4 As shown, the stator 7 and the magnetic ring 9 are in a non-suspended state, and the rotation of the fan seat 11 will not cause positional displacement. The PCB board 3 controls the stator 7 to be energized, so that magnetic rotation is generated between the stator 7 and the magnetic ring 9, so that the magnetic ring 9 drives the fan seat 11 to rotate through the magnetic sleeve 10.

[0028] The side wall of the central tube 14 is provided with a bayonet 15 , the shape of the bayonet 15 is set to be “L” shape, the shape of the connecting rod 12 is set to be “L” shape, the end of the connecting rod 12 is snap-fitted with the bayonet 15 , and the fan seat 11 is aligned with the center of the central tube 14 .

[0029] like Figure 1-Figure 4As shown, the bayonet 15 is used to fix the position of the power connecting rod 12 to prevent the power connecting rod 12 from shaking due to vibration caused by the operation of the fan. The fan seat 11 and the center tube 14 are aligned to improve the detection accuracy of the sensor 13 in the center tube 14.

[0030] The stator 7 is fixedly connected to one end close to the lower shell 1 with multiple groups of pins 8, and the multiple groups of pins 8 are fixedly connected to the PCB board 3. The lower shell 1 is fixedly connected to a terminal box 17 on the side away from the upper shell 2, and one end of the terminal guide pin 4 is located in the terminal box 17.

[0031] like Figure 4 As shown, multiple groups of pins 8 are used to fix the position of the stator 7 and ensure the electrical connection between the two, and the terminal box 17 and the terminal guide pins 4 are used to connect the fan to an external power supply.

[0032] The side wall of the lower shell 1 is fixedly connected with a plurality of clamping plates 5 , and the side wall of the upper shell 2 is provided with a plurality of clamping slots 6 , and the plurality of clamping plates 5 are clamped and matched with the plurality of clamping slots 6 respectively.

[0033] like Figure 1-Figure 5 As shown, the clamping plate 5 of the lower shell 1 is engaged with the clamping groove 6 of the upper shell 2 so that the upper shell 2 is connected with the lower shell 1 by clamping.

[0034] The side wall of the lower shell 1 is fixedly connected with a plurality of limit blocks 16 , and the plurality of limit blocks 16 are all in abutment with one end of the upper shell 2 .

[0035] like Figure 3 and Figure 5 As shown, the limit plate prevents excessive installation between the upper shell 2 and the lower shell 1. When the end of the upper shell 2 is squeezed, the end of the upper shell 2 close to the lower shell 1 will not be separated from the side wall of the lower shell 1.

[0036] The working principle of a silent sensor fan provided by the utility model is as follows:

[0037] The fan housing is formed by snapping the upper shell 2 and the lower shell 1 together, and fan blades are arranged on the side walls of the fan seat 11. The wiring guide pins 4 are connected to the outside to connect electricity to the PCB board 3. The PCB board 3 is connected to electricity to control the fan seat 11 to rotate between the upper shell 2 and the lower shell 1 by utilizing the electromagnetic induction principle and the Hall effect. The rotation of the fan seat 11 drives the surrounding air to flow, and the flowing air reaches the vicinity of the sensor 13 through the central tube 14. The sensor 13 detects the fan speed in real time through the air flow speed, and controls the rotation speed of the fan seat 11 through the electrical connection rod 12 and the PCB board 3. The fan speed is intelligently controlled in real time to control the speed within a certain range, thereby effectively improving the fan mute effect.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A silent sensor fan, comprising a lower shell (1), characterized in that: The upper shell (2) is clamped on the lower shell (1), a PCB board (3) for controlling the operation of the fan is fixedly connected inside the lower shell (1), a wiring guide pin (4) is fixedly connected to one end of the PCB board (3), an electrical connection rod (12) is fixedly connected to the other end of the PCB board (3), a sensor (13) is fixedly connected to the end of the electrical connection rod (12), a fan seat (11) is rotatably connected between the upper shell (2) and the lower shell (1), a center tube (14) is fixedly connected to the middle of one end of the upper shell (2) away from the lower shell (1), and the sensor (13) is located in the center tube (14).

2. A silent sensor fan according to claim 1, characterized in that: A stator (7) is fixedly connected to the middle of the lower shell (1), the stator (7) is electrically connected to the PCB board (3), a magnetic ring (9) is rotatably connected to the outside of the stator (7), the magnetic ring (9) and the stator (7) are magnetically matched, a magnetic sleeve (10) is fixedly connected to the outside of the magnetic ring (9), a fan seat (11) is fixedly connected to the magnetic sleeve (10), and the magnetic sleeve (10) and the magnetic ring (9) are located inside the fan seat (11).

3. The silent sensor fan according to claim 1, characterized in that: The side wall of the central tube (14) is provided with a bayonet (15), the bayonet (15) is shaped in an "L" shape, the connecting rod (12) is shaped in an "L" shape, the end of the connecting rod (12) is engaged with the bayonet (15), and the fan seat (11) is aligned with the center of the central tube (14).

4. The silent sensor fan according to claim 2, characterized in that: The stator (7) is fixedly connected to one end close to the lower shell (1) with a plurality of groups of pins (8), and the plurality of groups of pins (8) are fixedly connected to the PCB board (3). A terminal box (17) is fixedly connected to one side of the lower shell (1) away from the upper shell (2), and one end of the terminal guide pin (4) is located in the terminal box (17).

5. The silent sensor fan according to claim 1, characterized in that: The side wall of the lower shell (1) is fixedly connected with a plurality of groups of clamping plates (5), and the side wall of the upper shell (2) is provided with a plurality of groups of clamping slots (6), and the plurality of groups of clamping plates (5) are respectively clamped and matched with the plurality of groups of clamping slots (6).

6. The silent sensor fan according to claim 5, characterized in that: The side wall of the lower shell (1) is fixedly connected with a plurality of groups of limit blocks (16), and the plurality of groups of limit blocks (16) are all in abutment with one end of the upper shell (2).

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