CN214274013U

CN214274013U - Fan filtering system

Info

Publication number: CN214274013U
Application number: CN202022632895.4U
Authority: CN
Inventors: 朱官柏; 潘瑞斌; 林怡谋; 谢秀明
Original assignee: Xingxun Technology Co ltd
Current assignee: Xingxun Technology Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-09-24
Anticipated expiration: 2030-11-13

Abstract

A fan filter system comprises a motor fan set including a motor and a fan; the motor is connected with a power supply; when the fan is started, the fan is used for enabling air in front of the filter to pass through the filter; the intelligent power module comprises a motor current controller, a power supply controller and a power supply, wherein the motor current controller is connected between the motor and a connecting circuit of the power supply through the power supply controller and is used for controlling the power supply controller to change the current value of the power supply input into the motor; a motor current detector connected with the power supply controller for reading the current value of the motor; a motor speed controller for controlling the motor current controller to change the rotation speed of the motor; a motor speed control button group comprises a plurality of buttons connected with the motor speed controller, and when the motor speed controller receives a signal of the button, the corresponding speed is found out and a signal is transmitted to the motor current controller so as to control the speed of the motor.

Description

Fan filtering system

Technical Field

The present invention relates to a filtration system having a fan, and more particularly to a fan filtration system.

Background

Fan Filter Units (FFUs) are widely used in clean rooms for semiconductor processing to Filter contaminants such as ash in the clean room. Typically the FFU is mounted high in the room. The FFU uses a motor to control a fan to drive an air flow, and then a filter at the rear end of the fan achieves the purpose of cleaning air. In use, the operator often needs to change the number of revolutions of the motor. The conventional method for changing the rotating speed of the motor is to control the input voltage by rotating the speed regulating switch so as to change the rotating speed of the motor, and the method has the defect that the operator cannot know the current rotating speed of the motor when operating the fan unit, so that the fan unit cannot be accurately controlled. The system usually needs to be additionally linked with the fan set through a central control system or a joint control system to know the rotating speed through the system, and the mode is quite inconvenient. And when an operator operates the fan independently, the current motor rotating speed is not easy to be known by an external controller.

Furthermore, the filter of the fan filtering system can be blocked after long-term use, so that the exhaust at the front end of the filter close to the fan blades is not smooth, and turbulent flow is caused; such turbulence disturbs the rotation of the blade, so that the rotation of the blade is slowed, and the rotation speed and the motor current value of the motor are correspondingly lowered. If the filter is not replaced in time, the fan filter system can continuously operate in a state of poor efficiency and consumes more power, and the filter needs to be detached for re-cleaning or replacing the filter screen for a long time. This operation is quite time consuming and laborious.

Therefore, the present invention is intended to provide a new fan filter system to solve the above-mentioned drawbacks of the prior art.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses a solve the problem in the above-mentioned prior art, the utility model discloses in provide a fan filtration system, can be fast and conveniently operate the rotational speed of motor and make the system more power-saving to make the availability factor of filter higher, life longer. The filter change can also be freely prioritized by the operator, more fault and exception notification mechanisms. Use the utility model discloses a mode, the electric current that receives the rear end filter turbulent resistance when the motor increases and descends for when the air-out of motor driven fan reduces, the utility model discloses can use automatic or manual mode to continuously increase the rotational speed of motor to different progression for the air-out speed of this motor driven fan can be maintained at fixed range, consequently can maintain the certain filtering capability of filter of rear end. The utility model discloses a structure can control fan unit's function more accurately to motor speed can be learnt easily in the demonstration of also through the LED lamp body. The utility model provides a simply and conveniently change the mode of motor rotational speed, can maintain the air-out speed of rear end fan, and need not learn the rotational speed through extra well accuse or antithetical couplet accuse system, relative operator is because convenient operation, so usable adjustment motor rotational speed and improve the efficiency of filter, consequently can lengthen filter life, middle unnecessary washing or change. The labor and the corresponding cleaning cost are saved on the whole.

In order to achieve the above object, the present invention provides a fan filter system, which includes a motor-fan assembly including a motor; the motor is connected with a power supply; a fan connected to the motor and driven by the motor; wherein the fan when activated is adapted to filter air by disturbing air passing in front of a filter located at one end of the fan through the filter; an Intelligent Power Module (IPM) including a motor current controller connected between the motor and a connection circuit of the Power supply through a Power supply controller; the motor current controller is used for controlling the power supply controller to change the current value of the power supply input into the motor; a motor current detector connected with the power controller for reading the motor current value of the motor to know the motor current value change condition of the motor; a Motor speed controller (Motor MCU) is connected with the Motor current controller of the intelligent power module; wherein the motor speed controller is used for controlling the motor current controller so as to change the rotating speed of the motor and carry out required rotating speed modulation; and a motor speed control button group, comprising a plurality of buttons connected with the motor speed controller, wherein the buttons are used for controlling the speed of the motor; the user can thus change the rotational speed of the motor by pressing the button.

Further features of the invention and advantages thereof will be apparent from the following description, when read in conjunction with the accompanying drawings.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 shows a schematic diagram of the assembly architecture of the present invention.

FIG. 2 is a schematic diagram showing the variation of the current value of the motor without adjustment.

Fig. 3 shows a schematic diagram of the change of the current value of the motor of the present invention after multiple adjustments.

Fig. 4 is a schematic diagram of another assembly structure according to the present invention.

Description of the reference numerals

1 power supply 81 motor current detector

2 power controller 90 motor speed automatic regulating unit

5 motor fan unit 91 gravity sensor

10 motor 92 sound sensor

11 motor current controller 100 air

30 filter 500 motor power module

40 motor speed controller 511 first button

50 motor speed control knob group 512 second button

51 button 600 electric control module

Control end human-machine interface in 60 lamp bank group 700

70 fan 800 electronic information device

80 intelligent power module.

Detailed Description

Now, the structure of the present invention, and the functions and advantages thereof, are described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 4, a fan filtering system of the present invention is shown, which can be used in a production process environment with a clean room (such as electronic, semiconductor, wafer or household or other general application products), and can filter air in the clean room to achieve higher cleanliness; however, the above is not used to limit the application scope of the present invention, and the present invention can also be used in an environment without a clean room. The fan filter system comprises the following components:

a motor-fan assembly 5, comprising:

a motor 10; the motor 10 is a DC motor 10, and the use of the DC motor 10 can save power of the whole system by 30% compared with an AC motor. The motor 10 is connected to a power source 1.

A fan 70 is connected to the motor 10 and driven by the motor 10.

Wherein the fan 70, when activated, functions to disturb air 100 passing through the filter 30 in front of the filter 30 at one end of the fan 70 to filter the air.

The motor-fan assembly 5 described above is mounted in a motor power module 500.

An Intelligent Power Module (IPM) 80, comprising:

a motor current controller 11 connected between the connection lines of the motor 10 and the power supply 1 through a power supply controller 2. The motor current controller 11 is used for controlling the power controller 2 to change the current value of the power 1 input to the motor 10. The motor current controller 11 controls the resistance of the variable resistor of the power controller 2 to vary the current input from the power source 1 to the motor 10, thereby controlling the rotation speed of the motor 10.

A motor current detector 81 connected to the power controller 2 for reading the motor current value of the motor 10 to know the variation of the motor current value of the motor 10.

A Motor speed controller 40(Motor MCU, Motor Micro Control Unit) is connected to the Motor current controller 11 of the intelligent power module 80. The motor speed controller 40 is used for controlling the motor current controller 11, so as to change the rotation speed of the motor 10 and perform the required rotation speed modulation.

A motor speed control button set 50, comprising a plurality of buttons 51 connected to the motor speed controller 40, wherein the buttons 51 are used for controlling the speed of the motor 10, and when the motor speed controller 40 receives the signal of the buttons 51, the corresponding speed is found and the signal is transmitted to the motor current controller 11 to control the speed of the motor 10. The user can thus change the rotational speed of the motor 10 by pressing the button 51. The plurality of buttons 51 in this example comprise a first button 511 and a second button 512, the first button 511 is used for controlling the on/off of the motor 10; the second button 512 is used for controlling the rotation speed of the motor 10, and each time the second button 512 is pressed, the motor speed controller 40 will sequentially find out the rotation speeds of different stages and instruct the motor current controller 11 to control the motor 10 to switch to the corresponding rotation speed, i.e. the second button 512 will control the motor 10 to switch to the rotation speeds of different stages in sequence each time, so as to achieve the purpose of multi-stage transmission. Preferably, the rotation speed set in the motor speed controller 40 is five different rotation speeds, so that the motor 10 can be controlled to switch among the five rotation speeds by continuously pressing the second button 512.

The operation mode makes the operator not need to enter the computer and execute a plurality of relevant instructions, and the operator does not need to know the working environment of the whole operation. With the present invention, the rotation speed of the motor 10 can be changed directly by pressing the button 51 even if the operator does not know the software interface of the motor speed controller 40 and the related operation instructions.

A lamp bank group 60 is connected to the motor speed controller 40, and the lamp number of the lamp bank group 60 corresponds to the motor speed control button group 50. The lamp bank 60 can display the rotation speed of the motor 10 with a lamp number. Therefore, the operator can know the rotation speed of the motor 10 by directly seeing the lamp number, and can also know the rotation speed change of the motor 10 when pressing the different button 51.

Wherein the motor speed controller 40 receives motor current values from the intelligent power module 80. As shown in fig. 4, the motor speed controller 40 further includes a motor speed automatic adjusting unit 90 connected to the intelligent power module 80, and when the motor current value detected by the intelligent power module 80 decreases, the motor speed automatic adjusting unit 90 can adjust the current of the motor 10 according to the value or ratio of the decreased motor current value, so as to increase the rotation speed of the motor 10, so as to maintain the air outlet speed of the fan 70 within a certain range, thereby maintaining a certain filtering function of the rear-end filter 30.

As shown in fig. 2, as the turbulent resistance of the filter 30 increases during the first period T1, the motor current value of the motor 10 decreases, so that the output air of the fan 70 decreases. At this time, the automatic motor speed adjusting unit 90 of the present invention adjusts the rotation speed of the motor 10 to the second level, as shown in fig. 3, the initial motor current value a2 of the motor 10 is higher than the initial motor current value a1 of the previous level. When the turbulent resistance is still increased again with time (the second period T2 in fig. 3) and the motor current value is decreased again, the automatic motor speed adjustment unit 90 adjusts the rotation speed of the motor 10 to the next stage again, and this operation is repeated until the highest rotation speed is reached. Therefore, the operation is quite convenient. The user can maintain the operation of the system without having to frequently check the filtering capacity of the filter 30. Mainly because the operation of detecting the filter capacity of this filter 30 is very complicated, use the utility model discloses a mode of adjustment motor rotational speed in order to maintain fan-out wind speed can reduce this filter 30's detection number of times, prolongs filter 30's live time.

The above-mentioned air-out speed of the fan 70 can be maintained by manually operating the motor speed control knob set 50.

The intelligent power module 80, the power controller 2, the motor speed controller 40, the lamp bank group 60 and the motor speed control button group 50 are installed in an electronic control module 600.

The motor speed controller 40 can be connected to a central control end human-machine interface 700 through a network, and a remote operator can monitor the information of the motor fan set 5, the motor speed controller 40 and the intelligent power module 80 through the central control end human-machine interface 700 and control the motor speed controller 40 through the central control end human-machine interface 700, so as to achieve the purpose of remotely controlling the motor. The center control-side hmi 700 is also connected to the remote operator's electronic information device 800, so that the remote operator can enter the center control-side hmi 700 through the electronic information device 800 at any position to perform the required monitoring operation.

The utility model discloses still include a gravity sensor 91 and connect this motor speed controller 40, be located this motor power module 500 department of installing this motor 10, this gravity sensor 91 mainly used measures this motor 10 and this motor power module 500's vibrations to convey this motor speed controller 40 with the signal of measuring.

The utility model discloses still include that a sound sensor 92 connects this motor speed controller 40, be located this motor power module 500 department of this motor 10 of installation, this sound sensor 92 is mainly used for measuring the noise of this motor 10 during operation to convey this motor speed controller 40 judgement whether unusual with the measuring signal.

The utility model has the advantages of can be fast and convenient the rotational speed of operation motor and make the system more power-saving to make the availability factor of filter higher, life longer. The filter change can also be freely prioritized by the operator, more fault and exception notification mechanisms. Use the utility model discloses a mode, the electric current that receives the rear end filter turbulent resistance when the motor increases and descends for when the air-out of motor driven fan reduces, the utility model discloses can use automatic or manual mode to continuously increase the rotational speed of motor to different progression for the air-out speed of this motor driven fan can be maintained at fixed range, consequently can maintain the certain filtering capability of filter of rear end. The utility model discloses a structure can be more accurate control fan unit's function to motor speed can be learnt easily also through the demonstration of LED lamp body. The utility model provides a simple and easy and convenient mode that changes motor speed can maintain the air-out speed of rear end fan, and need not learn the rotational speed through extra well accuse or antithetical couplet accuse system, relative operator because convenient operation, so usable adjustment motor speed and the efficiency that improves the filter, consequently can lengthen filter life, middle unnecessary washing or change. The labor and the corresponding cleaning cost are saved on the whole.

The above detailed description is specific to a possible embodiment of the present invention, but the embodiment is not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included in the scope of the present invention.

Claims

1. A fan filter system, comprising:

a motor-fan assembly, comprising:

a motor; the motor is connected with a power supply;

a fan connected to the motor and driven by the motor; wherein the fan when activated is adapted to filter air by disturbing air passing in front of a filter located at one end of the fan through the filter;

an intelligent power module comprising:

a motor current controller connected between the motor and the connection line of the power supply through a power supply controller; the motor current controller is used for controlling the power supply controller to change the current value of the power supply input into the motor;

a motor current detector connected with the power controller for reading the motor current value of the motor to know the motor current value change condition of the motor;

a motor speed controller connected to the motor current controller of the intelligent power module; wherein the motor speed controller is used for controlling the motor current controller so as to change the rotating speed of the motor and carry out required rotating speed modulation; and

a motor speed control button group, which comprises a plurality of buttons connected with the motor speed controller, wherein the buttons are used for controlling the speed of the motor; the user can thus change the rotational speed of the motor by pressing the button.

2. The fan filter system of claim 1 further comprising a bank of lights connected to the motor speed controller, the lights of the bank of lights corresponding to the set of motor speed control buttons; the lamp bank group displays the rotating speed of the motor by using a lamp signal.

3. The fan filter system according to claim 1, wherein the plurality of buttons comprises a second button for controlling the rotational speed of the motor, and each time the second button is pressed, the motor speed controller sequentially finds out the rotational speeds of different stages to instruct the motor current controller to control the motor to switch to the corresponding rotational speed, i.e., the second button controls the motor to sequentially switch to the rotational speeds of different stages each time the second button is pressed, thereby achieving the purpose of multi-stage transmission.

4. The fan filter system of claim 1, wherein the plurality of buttons comprises a first button for controlling the motor to turn on and off.

5. The fan filtering system according to claim 1, wherein the motor speed controller further comprises a motor speed automatic adjusting unit connected to the intelligent power module, and when the motor current value detected by the intelligent power module decreases, the motor speed automatic adjusting unit adjusts the motor current according to the value or ratio of the decreased motor current value, so as to increase the motor rotation speed, thereby maintaining the fan air-out speed within a certain range, and thus maintaining the filtering function of the rear filter.

6. The fan filter system of claim 1, wherein the motor current controller controls the resistance of the variable resistor of the power controller to vary the amount of current input to the motor by the power source, thereby controlling the speed of the motor.

7. The fan filter system of claim 1, wherein the motor is a DC motor.

8. The fan filter system of claim 1, wherein during the first period of operation, as the turbulent flow resistance of the filter increases, the motor current value of the motor decreases, so that the output air of the fan decreases, and the motor speed auto-adjustment unit adjusts the rotation speed of the motor to the second level, wherein the initial motor current value of the motor is higher than that of the previous level; when the turbulent resistance increases again with time and the current value of the motor decreases again, the automatic motor speed adjusting unit adjusts the rotating speed of the motor to the next level again, and the operation can be repeated until the rotating speed is adjusted to the highest level.

9. The fan filter system of claim 1 further comprising a gravity sensor coupled to the motor speed controller for measuring vibration of the motor and transmitting a signal of the measurement to the motor speed controller; and

and the sound sensor is connected with the motor speed controller and is used for measuring noise when the motor works and transmitting a measured signal to the motor speed controller to judge whether the motor speed controller is abnormal or not.

10. The fan filter system according to claim 1, wherein the motor speed controller is connected to a central control end human machine interface, and a remote operator monitors information of the motor fan set, the motor speed controller and the intelligent power module through the central control end human machine interface and controls the motor speed controller through the central control end human machine interface to achieve the purpose of remotely controlling the motor; the central control end man-machine interface is also connected to an electronic information device of a remote operator, so that the remote operator can enter the central control end man-machine interface through the electronic information device to perform required monitoring operation.