CN113417881A - Novel intelligent fan control instrument - Google Patents
Novel intelligent fan control instrument Download PDFInfo
- Publication number
- CN113417881A CN113417881A CN202110671917.4A CN202110671917A CN113417881A CN 113417881 A CN113417881 A CN 113417881A CN 202110671917 A CN202110671917 A CN 202110671917A CN 113417881 A CN113417881 A CN 113417881A
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- Prior art keywords
- fan
- programmable controller
- controller
- frequency converter
- concentration
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/70—Type of control algorithm
- F05D2270/706—Type of control algorithm proportional-integral-differential
Abstract
The invention relates to a novel intelligent fan controller, which is designed for solving the technical problems that the existing like products are difficult to integrally produce and assemble, the production cost is high, and the monitoring accuracy is low. The intelligent control instrument is characterized in that a programmable controller and a CO concentration sensing transmitter are arranged in a frequency converter of the intelligent control instrument of the fan, the CO concentration sensing transmitter compares the sensed regional CO concentration with the set CO concentration in the programmable controller, judges a difference value, and controls the air volume of the fan by operating the fan of the ventilation unit at the rotating speed required by control through PID proportional-integral calculation of the programmable controller; the carbon monoxide sensor converts the detected CO concentration into a 0-10VDC signal and outputs the signal to a programmable controller which can receive the signal, the programmable controller compares and calculates the input value with a user set value and outputs a 0-10VDC signal to a frequency converter, the frequency of the frequency converter is adjusted, and the rotating speed of the fan is controlled.
Description
Technical Field
The invention relates to an intelligent fan controller, in particular to a novel intelligent fan controller.
Background
The fan controller is an instrument for controlling the operation of a fan to change the speed of the output and input of gas, namely a flow control device of wind pressure, and can be realized by changing the resistance of a pipeline of an outlet C7 so as to change the opening of an outlet U control valve or a bypass valve, and also can be realized by changing the rotating speed. Some fan controllers control and regulate indoor carbon monoxide by controlling a fan, such as application number 201810776033.3 disclosed in chinese patent literature, application publication date 2018.09.28, and invention name "frequency conversion fan intelligent control device and control switch"; for example, the utility model is named as 'a new fan intelligent control system', which is disclosed in Chinese patent document with application number 201520433697.1, grant notice date 2016.02.03; and the invention discloses an intelligent control system of a fresh air machine, as application number 201610522455.9, application publication date 2016.11.23 and disclosed in Chinese patent literature. However, the production cost of the product and similar products is high, the application and popularization are difficult, the production, assembly, installation, monitoring and operation are inconvenient, the remote monitoring and adjustment are difficult, and the design of a control center host, automatic fire extinguishing and consumer equipment networking is lacked.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a novel intelligent fan controller for the field, so that the technical problems that the existing like products are difficult to integrally produce and assemble, the production cost is high, the production, assembly, installation, monitoring and operation are inconvenient, and the monitoring accuracy is low are solved. The purpose is realized by the following technical scheme.
A novel intelligent fan controller is characterized in that one side of a cabinet door of the intelligent fan controller is hinged with one side of an opening of a cabinet body through a hinge, the other side of the cabinet door is provided with a door lock, a three-phase air switch, an intermediate relay, a transformer, a frequency converter, a single-phase switch, a thermal relay, a cooling fan and a wiring terminal are fixed in an inner support frame, a panel of the cabinet door is provided with control keys and a human-computer interface, the human-computer interface is replaced by a control interface, and the intelligent fan controller is connected with a fan of a ventilator unit and an indoor corresponding carbon monoxide sensor through a circuit; the method is characterized in that a programmable controller and a CO concentration sensing transmitter are arranged in the frequency converter, the CO concentration sensing transmitter compares the sensed regional CO concentration with the set CO concentration in the programmable controller, judges a difference value, and inputs a 50Hz alternating current of a power grid to a ventilator unit through PID (proportion integration differentiation) proportional integral calculation of the programmable controller to invert the alternating current into the alternating current with a frequency meeting a control requirement, so that a fan of the ventilator unit operates at a rotating speed meeting the control requirement to control the air volume of the ventilator, and the fan comprises a blower and an exhaust fan. The intelligent fan control instrument is safe and reliable, has manual and automatic control and local and remote control functions, and is provided with a double-power-supply switching device; the automatic monitoring system has high automation degree, automatically monitors the air quality in the garage, and controls the fan to perform variable-frequency energy-saving operation in real time, so that the air quality in the garage meets the national standard (or a set value), and the aims of environmental protection and energy saving are fulfilled; the energy-saving efficient air conditioner has the control functions of PID adjustment, time sequence and the like; the system has strong functions, has a normal working mode and an emergency working mode, automatically switches to the emergency working mode when the equipment receives a fire alarm signal, simultaneously outputs an audible and visual alarm signal, and feeds back the working condition of the fan to a fire control center; the communication is convenient, and the LCD liquid crystal display device can know various functions such as working modes, running states of fans, air quality and parameter setting.
The carbon monoxide sensor converts the detected CO concentration into a 0-10VDC signal and outputs the signal to a programmable controller which can receive the signal, the programmable controller compares and calculates the input value with a user set value and outputs a 0-10VDC signal to a frequency converter, the frequency of the frequency converter is adjusted, and the rotating speed of the fan is controlled.
The control keys of the cabinet door comprise a remote/local button, a power frequency starting button, a variable frequency starting button, a stop button and an alarm indicator lamp, the human-computer interface and the control interface are LCD liquid crystal display equipment, and the LCD liquid crystal display equipment is fixed on the cabinet door through a transverse plate frame. When the intelligent fan controller receives the fire alarm signal, the intelligent fan controller automatically switches to an emergency working mode, simultaneously outputs an audible and visual alarm signal, and feeds the working condition of the fan back to the fire control center.
The rear portion of the cabinet body is equipped with the installation link plate, and the hanging hole at installation link plate rear portion is equipped with expansion screw, and the both sides of installation link plate are equipped with the oblique groove of hanging, and the oblique groove below of hanging of installation link plate is equipped with the fixed orifices, and the cabinet body hangs the oblique groove of hanging of installation link plate through the mounting screw of both sides, and the installation link plate passes through the set screw below the mounting screw of cabinet body both sides simultaneously and locks in the cabinet body.
And an antenna receiving box is arranged on the outer side of the cabinet body and is connected with a programmable controller in the frequency converter through a circuit.
The cabinet body is equipped with temperature sensor, stand-by power supply and automatic fire extinguishing assembly, and temperature sensor, stand-by power supply and automatic fire extinguishing assembly pass through the circuit and are connected with the programmable controller in the converter.
And the frequency converter is connected with a fire alarm programmable controller host through a line.
And the programmable controller of the frequency converter is replaced by a microcomputer programmable controller host.
The invention has reasonable structural design, convenient production, assembly, installation, monitoring and operation and accurate detection of the concentration of the indoor carbon monoxide; the intelligent control instrument is suitable for being used as an intelligent control instrument for the fan in indoor environments such as a garage and the like, and the structure of the similar product is improved.
Drawings
Fig. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is a structural schematic diagram of a closed state of the cabinet door in fig. 1.
Fig. 3 is an enlarged structure diagram of the human-machine interface of fig. 2.
Fig. 4 is a structural view of the rear mounting state of fig. 2.
Fig. 5 is a schematic diagram of a modified structure of the human-machine interface of fig. 3.
Figure number and name: 1. the intelligent cabinet comprises a cabinet body, 2, a cabinet door, 3, a three-phase air switch, 4, an intermediate relay, 5, a transformer, 6, a frequency converter, 7, a single-phase switch, 8, a thermal relay, 9, a cooling fan, 10, an inner support, 11, a wiring terminal, 12, a remote/local button, 13, a power frequency starting button, 14, a frequency conversion starting button, 15, a stopping button, 16, an alarm indicator lamp, 17, a man-machine interface, 18, a door lock, 19, an antenna receiving box, 20, a fixing screw, 21, a mounting screw, 22, an expansion screw, 23, a mounting hanging plate, 24 and a control interface.
Detailed Description
The structure of the present invention will now be further described with reference to the accompanying drawings. As shown in fig. 1-5, one side of a cabinet door 2 of the intelligent fan controller is hinged with one side of an opening of a cabinet body 1 through a hinge, the other side of the cabinet door is provided with a door lock 18, a three-phase air switch 3 fixed on an inner support 10, an intermediate relay 4, a transformer 5, a frequency converter 6, a single-phase switch 7, a thermal relay 8, a cooling fan 9 and a wiring terminal 11 are arranged in the cabinet body, a panel of the cabinet door is provided with a control key and a human-computer interface 17, the human-computer interface or the control interface is replaced by a control interface 24, and the intelligent fan controller is connected with a fan of a ventilator set and an indoor corresponding carbon monoxide sensor through a circuit. The control keys of the cabinet door comprise a remote/local button 12, a power frequency start button 13, a variable frequency start button 14, a stop button 15 and an alarm indicator light 16, a human-computer interface 17 and a control interface are LCD liquid crystal display equipment, and the LCD liquid crystal display equipment is fixed on the cabinet door through a transverse plate frame. A programmable controller and a CO concentration sensing transmitter are arranged in the frequency converter, the CO concentration sensing transmitter compares the sensed regional CO concentration with the set CO concentration in the programmable controller, a difference value is judged, 50Hz alternating current input into the ventilator unit by the power grid is inverted into alternating current with the frequency meeting the control requirement through PID proportional integral calculation of the programmable controller, a fan of the ventilator unit operates according to the rotating speed of the control requirement, and the air volume of the ventilator is controlled, wherein the fan comprises a blower and an exhaust fan.
The rear portion of the above-mentioned cabinet body is equipped with installation link plate 23, and the hanging hole at installation link plate rear portion is equipped with expansion screw 22, and the both sides of installation link plate are equipped with the oblique groove of hanging, and the oblique groove below of hanging of installation link plate is equipped with the fixed orifices, and the cabinet body hangs the oblique groove of hanging of installation link plate through the mounting screw 21 of both sides, and the installation link plate passes through the set screw 20 of cabinet body both sides mounting screw below and locks in the cabinet body simultaneously. Meanwhile, the outer side of the cabinet body can also be provided with an antenna receiving box 19, and the antenna receiving box is connected with a programmable controller in the frequency converter through a circuit, so that the intelligent fan controller can be conveniently connected with a control center of the background and corresponding equipment in a wireless mode. The cabinet body also can be equipped with temperature sensor, stand-by power supply and automatic fire extinguishing assembly, and temperature sensor, stand-by power supply and automatic fire extinguishing assembly pass through the circuit and are connected with the programmable controller in the converter to be convenient for fan intelligent control appearance automatic fire extinguishing, stand-by power supply use and indoor outer temperature monitoring.
The model of this fan intelligent control appearance is AVC-A type, and this fan intelligent control appearance's automatic control system constitutes and includes: 1) a carbon monoxide sensor, model CMW 1700; 2) the programmable controller is a PLC (programmable logic controller) with the model of considering beauty; 3) and the frequency converter is G7-015T 3. The intelligent fan controller is characterized in that a microcomputer programmable controller host or a Programmable Logic Controller (PLC) compares the sensed regional CO concentration with the set CO concentration through a CO concentration sensing transmitter, judges a difference value, inputs 50Hz alternating current of a ventilator unit into a power grid through PID proportional-integral calculation, and inverts the alternating current into the alternating current with the frequency meeting the control requirement, so that a fan of the ventilator unit operates at the rotating speed meeting the control requirement, and the air volume of the ventilator is controlled. The automatic control principle of the intelligent fan controller is as follows: the carbon monoxide sensor converts the detected CO concentration into a 0-10VDC signal and outputs the signal to a programmable controller which can receive the signal, the PLC takes the PLC into consideration, the programmable controller compares and calculates according to an input value and a user set value, outputs a 0-10VDC signal to the frequency converter, adjusts the frequency of the frequency converter and achieves the purpose of controlling the CO concentration. Meanwhile, the system can be linked with a fire-fighting programmable controller, and when the control system receives a fire-fighting signal, the fan automatically operates at the maximum air volume.
The use operation attention points of the intelligent fan controller are as follows: the fan can be started only after the power switch is turned on for about 5 seconds and the frequency converter is observed to be normal; when the fan is started, in order to avoid the phenomenon of power grid impact, the fan is started completely within 20 seconds; when the fan stops, in order to avoid the overcurrent phenomenon, the fan is stopped completely after 30 seconds; closing a 3P three-phase air switch in the control cabinet, and checking whether the electric system is normal; closing two 2P single-phase switches in the control cabinet; closing the cabinet door, and observing that various indicating instruments and indicating lamp systems are in a standby state; operating a starting button according to the sequence of the fan to start the fan; automatically adjusting the running state of the fan according to the load condition; the fan can be stopped by operating the stop buttons in sequence.
The intelligent fan controller comprises the following specific operation steps: mainly relates to the operation steps of a frequency converter and a programmable controller, mainly comprises a human-computer interface and a setting method, wherein the human-computer interface is displayed as follows:
Y1 X1
next, enter CO concentration set point human machine interface by pressing a key a, display as follows:
Y1
SP-h 25.0
note: SP is an abbreviation for SETPOINT SETPOINT, CO control, and 25.0 is the user CO concentration SETPOINT, which can be varied according to the user's needs. In the mode, when the CO concentration sensor detects that the garage CO concentration is 25.0PPM higher than a user set value, the programmable controller outputs a signal to reduce the running frequency of the frequency converter, and when the CO concentration sensor detects that the garage CO concentration is 25.0PPM lower than the user set value, the programmable controller outputs a signal to increase the running frequency of the frequency converter, control the air exhaust amount of the fan and reduce the CO concentration. When a user needs to change a set value after entering the human-computer interface, firstly, pressing a SEL ● key, and the user sees that the value flickers to indicate that the setting is waiting to be changed; then, after the increase or decrease of the tangle-solidup key and the T-T key is pressed for modification, and the expected value of the user is reached, a SEL ● key is pressed for locking, and the value is not in flashing, thereby indicating that the modification is successful. The following is a similar operation method if parameter modification is required, and the parameter does not need to be modified.
Pressing a key a to enter another man-machine interface, and the user sees that: "X127.5"; note: x1 represents the actual value of CO concentration measured by the CO sensor, such as 27.5PPM, which the user can only read and cannot modify by himself.
Pressing a key a to enter another man-machine interface, and the user sees that: "Y15"; note: y represents the control signal value calculated by the programmable controller to the frequency converter, and the user can only read the value and can not modify the value by himself. As shown in FIG. 5, the number keys 0-9 are additionally arranged below the LCD liquid crystal display device of the human-computer interface, and the number keys are a value between 0 and 9. For example: 5 in the human-computer interface means that the programmable controller outputs a signal of DC5V to control the frequency of the frequency converter after calculation, namely the frequency converter operates at 40 Hz.
Pressing a key a to enter another man-machine interface, and the user sees that: "Q1 OFF"; note: q is used for indicating the output of the switching value, ON is used for indicating the opening, OFF is used for indicating the closing, and the user of the man-machine interface does not need to care because the output of Q is not used in the mode.
Claims (8)
1. A novel intelligent fan controller is characterized in that one side of a cabinet door (2) of the intelligent fan controller is hinged with one side of an opening of a cabinet body (1) through a hinge, a door lock (18) is arranged on the other side of the cabinet door, a three-phase air switch (3) fixed on an inner support (10), an intermediate relay (4), a transformer (5), a frequency converter (6), a single-phase switch (7), a thermal relay (8), a cooling fan (9) and a wiring terminal (11) are arranged in the cabinet body, a panel of the cabinet door is provided with control keys and a human-computer interface (17), the human-computer interface or the human-computer interface is replaced by a control interface (24), and the intelligent fan controller is connected with a fan of a ventilator unit and an indoor corresponding carbon monoxide sensor through a circuit; the device is characterized in that a programmable controller and a CO concentration sensing transmitter are arranged in the frequency converter (6), the CO concentration sensing transmitter compares the sensed regional CO concentration with the set CO concentration in the programmable controller, judges a difference value, and inputs 50Hz alternating current of a power grid to a ventilator unit through PID (proportion integration differentiation) proportional integral calculation of the programmable controller, and the alternating current is inverted into alternating current with frequency meeting the control requirement, so that a fan of the ventilator unit operates at the rotating speed meeting the control requirement to control the air volume of the ventilator, and the fan comprises a blower and an exhaust fan.
2. The intelligent controller for the fan as claimed in claim 1, wherein the carbon monoxide sensor converts the detected CO concentration into a 0-10VDC signal to be transmitted to the programmable controller capable of receiving the signal, and the programmable controller compares the input value with a user set value to calculate, outputs a 0-10VDC signal to the frequency converter, adjusts the frequency of the frequency converter, and controls the rotation speed of the fan.
3. The novel intelligent fan controller according to claim 1, wherein the control buttons of the cabinet door (2) comprise a remote/local button (12), a power frequency start button (13), a variable frequency start button (14), a stop button (15) and an alarm indicator (16), the human-computer interface (17) and the control interface (24) are LCD (liquid crystal display) equipment, and the LCD equipment is fixed on the cabinet door through a transverse plate frame.
4. The novel intelligent fan controller according to claim 1, wherein the rear portion of the cabinet body (1) is provided with an installation hanging plate (23), hanging holes at the rear portion of the installation hanging plate are provided with expansion screws (22), two sides of the installation hanging plate are provided with oblique hanging grooves, fixing holes are arranged below the oblique hanging grooves of the installation hanging plate, the cabinet body is hung into the oblique hanging grooves of the installation hanging plate through the installation screws (21) at the two sides, and the installation hanging plate is locked to the cabinet body through the fixing screws (20) arranged below the installation screws at the two sides of the cabinet body.
5. The novel intelligent fan controller according to claim 1, wherein an antenna receiving box (19) is arranged on the outer side of the cabinet body (1), and the antenna receiving box is connected with a programmable controller in the frequency converter (6) through a circuit.
6. The intelligent controller for the novel fan according to claim 1, wherein the cabinet body (1) is provided with a temperature sensor, a standby power supply and an automatic fire extinguishing component, and the temperature sensor, the standby power supply and the automatic fire extinguishing component are connected with a programmable controller in the frequency converter (6) through circuits.
7. The intelligent controller for the novel draught fan according to claim 1, wherein the frequency converter (6) is connected with a fire alarm programmable controller host through a line.
8. The intelligent controller for the draught fan as claimed in claim 1, wherein the programmable controller of the frequency converter (6) is replaced by a microcomputer programmable controller host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110671917.4A CN113417881A (en) | 2021-06-17 | 2021-06-17 | Novel intelligent fan control instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110671917.4A CN113417881A (en) | 2021-06-17 | 2021-06-17 | Novel intelligent fan control instrument |
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| Publication Number | Publication Date |
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| CN113417881A true CN113417881A (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110671917.4A Pending CN113417881A (en) | 2021-06-17 | 2021-06-17 | Novel intelligent fan control instrument |
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| CN (1) | CN113417881A (en) |
Citations (7)
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| CN213020127U (en) * | 2020-08-13 | 2021-04-20 | 盐城正邦环保科技有限公司 | Intelligent air supply and exhaust control system for underground parking lot |
-
2021
- 2021-06-17 CN CN202110671917.4A patent/CN113417881A/en active Pending
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|---|---|---|---|---|
| CN2112229U (en) * | 1991-09-12 | 1992-08-05 | 王利军 | Electromagnetic frequency splitting soft wind ceiling fan speed governer |
| US20110046790A1 (en) * | 2009-08-20 | 2011-02-24 | Performance Heating and Air Conditioning, Inc. | Energy reducing retrofit method and apparatus for a constant volume hvac system |
| CN204648591U (en) * | 2015-04-24 | 2015-09-16 | 浙江大冲能源科技有限公司 | Underground space CO kinetic-control system |
| CN204859059U (en) * | 2015-07-18 | 2015-12-09 | 徐兵 | Fan frequency conversion system |
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| CN209856015U (en) * | 2019-04-25 | 2019-12-27 | 上海人民企业集团水泵有限公司 | Energy-efficient variable frequency control cabinet of water pump |
| CN213020127U (en) * | 2020-08-13 | 2021-04-20 | 盐城正邦环保科技有限公司 | Intelligent air supply and exhaust control system for underground parking lot |
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