CN211501048U - Control device of variable frequency fan for purifying and sterilizing device - Google Patents
Control device of variable frequency fan for purifying and sterilizing device Download PDFInfo
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- CN211501048U CN211501048U CN201921228216.8U CN201921228216U CN211501048U CN 211501048 U CN211501048 U CN 211501048U CN 201921228216 U CN201921228216 U CN 201921228216U CN 211501048 U CN211501048 U CN 211501048U
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Abstract
The utility model relates to a controlling means for purifying degassing unit's frequency conversion fan, including PM2.5 sensor, power module, frequency conversion fan and be connected with the frequency conversion fan and be used for controlling the control module of frequency conversion fan, power module is connected with control module to be connected to the frequency conversion fan through control module, the device still includes formaldehyde sensor and TVOC sensor, the entrance in wind channel is all located to PM2.5 sensor, formaldehyde sensor and TVOC sensor, and all is connected with control module. Compared with the prior art, the utility model discloses compare in current clarifier product, increased formaldehyde sensor and TVOC sensor to can provide more foundations for the control of fan, in addition, all locate the entrance in wind channel with PM2.5 sensor, formaldehyde sensor and TVOC sensor, rather than wind channel exit, consequently the air quality testing result who obtains is more accurate.
Description
Technical Field
The utility model relates to an air purification device control technology especially relates to a controlling means that is used for purifying degassing unit's frequency conversion fan.
Background
All there is the motor among the air purifier of current, and current fan control is fairly simple, mostly is the control of on-off state. Therefore, the working state of the household kitchen fresh air system is single, and some purifiers adopt variable frequency fans, for example, chinese patent CN107525177B discloses a household kitchen fresh air system, which is composed of a filtering device, an air supply fan, a sensible heat exchanger, a purifying device, a range hood, a check valve, a cooking bench air port, a refrigeration indoor unit, a refrigeration outdoor unit, an air supply pipe, a control module, a pipeline and a valve. The utility model discloses a new trend that new trend system sent into gets into the kitchen through setting up in top of a kitchen range mesa air supply outlet all around, with lampblack absorber cooperation work, is formed with the tissue air supply, airs exhaust in the top of a kitchen range region, when reaching the pollutant with the family kitchen from this and accelerating exhaust, keeps off outdoor particle pollutant in the outside to utilize energy-conserving mode to improve the suitability of kitchen indoor temperature.
However, the fresh air system is not provided with the purification module, and the control part of the fan is not simple in logic and high in maintenance cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a control device of a variable frequency fan for a purifying and sterilizing device in order to overcome the defects of the prior art.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a controlling means for purifying degassing unit's frequency conversion fan, includes PM2.5 sensor, power module, frequency conversion fan and is connected with the frequency conversion fan and is used for controlling the control module of frequency conversion fan, power module is connected with control module to be connected to the frequency conversion fan through control module, the device still includes formaldehyde sensor and TVOC sensor, the entrance in wind channel is all located to PM2.5 sensor, formaldehyde sensor and TVOC sensor, and all with control module connects.
The power module comprises a mains supply input interface connected to mains supply input and a conversion circuit respectively outputting direct current 12V and direct current 3.3V, wherein the direct current 3.3V output end of the conversion circuit is connected to the control module, and the direct current 12V output end is connected to the variable frequency fan through the control module.
The control module comprises a processor and a 0-10V generating circuit, the processor is connected to a control signal input end and a direct current 3.3V output end of the 0-10V generating circuit respectively, a power supply input end of the 0-10V generating circuit is connected to a direct current 12V output end of the converting circuit, and a power supply output end is connected to the variable frequency fan.
The 0-10V generating circuit comprises a first operational amplifier and a second operational amplifier, wherein the inverting input end of the first operational amplifier is connected to the direct current 3.3V output end, the non-inverting input end of the first operational amplifier is connected to the output end, one pole of the power supply input end is connected to the direct current 12V output end, the other pole of the power supply input end is grounded, the output end of the first operational amplifier is further connected to the non-inverting input end of the second operational amplifier, the inverting input end of the second operational amplifier is connected to the output end of the second operational amplifier through a rheostat, the processor is connected to the non-inverting input end of the second operational amplifier, and the output end of the.
The control module comprises a processor and a three-level voltage output circuit, the processor is respectively connected with a control signal input end of the three-level voltage output circuit, a power supply input end of the three-level voltage output circuit is connected to a direct current 12V output end of the conversion circuit, and a power supply output end of the three-level voltage output circuit is connected to the variable frequency fan.
The three-level voltage output circuit comprises a voltage division circuit, a first relay and a second relay, the voltage division circuit comprises a first voltage division resistor and a second voltage division resistor, the first voltage division resistor, the second voltage division resistor and the variable frequency fan are connected in series, the first relay is connected with the first voltage division resistor in parallel, the second relay is connected with the second voltage division resistor in series, and control signal input ends of the first relay and the second relay are connected with the processor.
The first relay and the second relay are both solid state relays.
The device also comprises a working state indicator light which is connected with the controller.
Compared with the prior art, the utility model discloses following beneficial effect has:
1) compare in current clarifier product, increased formaldehyde sensor and TVOC sensor to can provide more bases for the control of fan, in addition, all locate the entrance in wind channel with PM2.5 sensor, formaldehyde sensor and TVOC sensor, rather than wind channel exit, consequently the air quality testing result who obtains is more accurate.
2) The power module provides two outputs of 3.3V and 12V, so that power can be supplied to the controller and the variable-frequency fan.
3) And a 0-10V generating circuit is adopted, so that richer fan rotating speeds can be provided.
4) And a three-level voltage output circuit is adopted, so that three-level control of the variable frequency fan can be realized, and control of three speeds is provided.
5) The mode of the relay and the voltage division circuit is adopted, the circuit structure is simplified, and the reliability is higher.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a 0-10V generating circuit in embodiment 1;
FIG. 3 is a schematic diagram of a power module;
FIG. 4 is a schematic diagram of a three-stage voltage output circuit section in embodiment 2;
wherein: 1. control module, 2, power module, 3, air sensor module, 4, variable frequency fan, 5, wind channel.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The utility model provides a controlling means for purifying and disinfecting device's frequency conversion fan 4, as shown in figure 1, including PM2.5 sensor, power module 2, frequency conversion fan 4 and be connected with frequency conversion fan 4 and be used for controlling frequency conversion fan 4's control module 1, power module 2 is connected with control module 1, and be connected to frequency conversion fan 4 through control module 1, the device still includes formaldehyde sensor and TVOC sensor, PM2.5 sensor, the entrance in wind channel 5 is all located to formaldehyde sensor and TVOC sensor, and all be connected with control module 1. Wherein, PM2.5 sensor, formaldehyde sensor and TVOC sensor can adopt the sensor module of integration, for example: an all-in-one air sensor module 3S6(PM2.5/PM10/CO 2/TVOC/humiture/CH 2O). Data processing for a particular sensor can be found in the product manual.
As shown in fig. 3, the power module 2 includes a commercial power input interface connected to a commercial power input and a conversion circuit outputting dc 12V and dc 3.3V, respectively, a dc 3.3V output terminal of the conversion circuit is connected to the control module 1, and a dc 12V output terminal is connected to the variable frequency fan 4 through the control module 1.
The control module 1 comprises a processor and a 0-10V generating circuit, the processor is respectively connected to a control signal input end and a direct current 3.3V output end of the 0-10V generating circuit, a power supply input end of the 0-10V generating circuit is connected to a direct current 12V output end of the converting circuit, and a power supply output end is connected to the variable frequency fan 4. The processor may employ STM32F103RET 6.
As shown in fig. 2, the 0-10V generating circuit includes a first operational amplifier and a second operational amplifier, wherein an inverting input terminal of the first operational amplifier is connected to the dc 3.3V output terminal, a non-inverting input terminal of the first operational amplifier is connected to the output terminal, one terminal of the power supply input terminal is connected to the dc 12V output terminal, the other terminal of the power supply input terminal is grounded, the output terminal of the first operational amplifier is further connected to a non-inverting input terminal of the second operational amplifier, the inverting input terminal of the second operational amplifier is connected to its own output terminal through a rheostat, the processor is connected to the non-inverting input terminal of the second operational amplifier, and the output terminal of. In the figure, the first operational amplifier is U4B, the second operational amplifier is U4A, and the PA4 interface is connected to the processor.
The device also comprises a working state indicator light, the working state indicator light is connected with the controller, the controller is electrified to work, namely, high level is output, and the working state indicator light is on.
The present embodiment also provides a control method of a control device, including:
step S1: receiving PM2.5 data, formaldehyde content data and TVOC content data collected by a PM2.5 sensor, a formaldehyde sensor and a TVOC sensor;
step S2: based on the PM2.5 data, the formaldehyde content data and the TVOC content data, selecting corresponding wind speed by comparing a control fan rotating speed control table and controlling the variable frequency fan 4 to work according to the selected corresponding rotating speed.
In this embodiment, the rotation speed has three stages, which are: low speed, 700 rpm; medium speed, 1000 rpm; high speed, 1350 rpm.
Wherein the speed control table can adopt the fusion algorithm, also can adopt the mode of getting big value, for example set up three look-up tables respectively, correspond to PM2.5 data, formaldehyde content data and TVOC content data respectively, and the fan can be as table 1 sets up:
TABLE 1
In addition, this application can also dispose the 4G module, sends corresponding data to the high in the clouds.
Example 2
The utility model provides a controlling means for purifying and disinfecting device's frequency conversion fan 4, as shown in figure 1, including PM2.5 sensor, power module 2, frequency conversion fan 4 and be connected with frequency conversion fan 4 and be used for controlling frequency conversion fan 4's control module 1, power module 2 is connected with control module 1, and be connected to frequency conversion fan 4 through control module 1, the device still includes formaldehyde sensor and TVOC sensor, PM2.5 sensor, the entrance in wind channel 5 is all located to formaldehyde sensor and TVOC sensor, and all be connected with control module 1. Wherein, PM2.5 sensor, formaldehyde sensor and TVOC sensor can adopt the sensor module of integration, for example: an all-in-one air sensor module 3S6(PM2.5/PM10/CO 2/TVOC/humiture/CH 2O). Data processing for a particular sensor can be found in the product manual.
As shown in fig. 3, the power module 2 includes a commercial power input interface connected to a commercial power input and a conversion circuit outputting dc 12V and dc 3.3V, respectively, a dc 3.3V output terminal of the conversion circuit is connected to the control module 1, and a dc 12V output terminal is connected to the variable frequency fan 4 through the control module 1.
The control module 1 comprises a processor and a three-level voltage output circuit, the processor is respectively connected with a control signal input end of the three-level voltage output circuit, a power supply input end of the three-level voltage output circuit is connected to a direct current 12V output end of the conversion circuit, and a power supply output end is connected to the variable frequency fan 4. The processor may employ STM32F103RET 6.
As shown in fig. 4, the three-stage voltage output circuit includes a voltage dividing circuit, a first relay and a second relay, the voltage dividing circuit includes a first voltage dividing resistor and a second voltage dividing resistor, the first voltage dividing resistor, the second voltage dividing resistor and the variable frequency fan 4 are connected in series, the first relay is connected in parallel with the first voltage dividing resistor, the second relay is connected in series with the second voltage dividing resistor, and control signal input ends of the first relay and the second relay are connected with the processor. In the figure, K1 is a control switch, K2 is a first relay, K3 is a second relay, the resistances of the first divider resistor and the second divider resistor are equal or close, in addition, K1 is normally open, K2 and K3 are normally closed, when the device is closed, the processor respectively controls two relays and one switch to work by three outputs, actually, the control switch can also be a relay, the processor outputs a high level to indicate 1, the open end of the corresponding relay is normally closed, the normally closed end is opened, the processor does not output a signal to indicate 0, the normally open end of the corresponding relay is opened, and the normally closed end is closed. When the device does not work, K1 is disconnected, the flat fan loses power and stops rotating, when K1 is closed, K2 and K3 are both closed, the fan is at the fastest speed, K1 is closed, K2 and K3 are both opened, the fan is at the lowest rotating speed, K1 is closed, one of K2 and K3 is opened, and when the other one is closed, the variable frequency fan 4 is at the medium rotating speed.
Preferably, the first relay and the second relay are both solid-state relays.
The device also comprises a working state indicator light, the working state indicator light is connected with the controller, the controller is electrified to work, namely, high level is output, and the working state indicator light is on.
Claims (8)
1. The utility model provides a controlling means for purifying degassing unit's frequency conversion fan, includes PM2.5 sensor, power module, frequency conversion fan and is connected with the frequency conversion fan and is used for controlling the control module of frequency conversion fan, power module is connected with control module to be connected to the frequency conversion fan through control module, a serial communication port, the device still includes formaldehyde sensor and TVOC sensor, the entrance in wind channel is all located to PM2.5 sensor, formaldehyde sensor and TVOC sensor, and all with control module connects.
2. The control device of claim 1, wherein the power module comprises a commercial power input interface connected to a commercial power input and a conversion circuit outputting dc 12V and dc 3.3V, respectively, the dc 3.3V output of the conversion circuit is connected to the control module, and the dc 12V output is connected to the variable frequency fan through the control module.
3. The control device of the variable frequency fan for the purification and disinfection device as claimed in claim 2, wherein the control module comprises a processor and a 0-10V generating circuit, the processor is connected to the control signal input end and the DC 3.3V output end of the 0-10V generating circuit respectively, the power input end of the 0-10V generating circuit is connected to the DC 12V output end of the converting circuit, and the power output end is connected to the variable frequency fan.
4. The control device of claim 3, wherein the 0-10V generating circuit comprises a first operational amplifier and a second operational amplifier, the inverting input terminal of the first operational amplifier is connected to the DC 3.3V output terminal, the non-inverting input terminal of the first operational amplifier is connected to the output terminal, one pole of the power supply input terminal is connected to the DC 12V output terminal, the other pole of the power supply input terminal is connected to the ground, the output terminal of the first operational amplifier is further connected to the non-inverting input terminal of the second operational amplifier, the inverting input terminal of the second operational amplifier is connected to the output terminal of the second operational amplifier through a rheostat, the processor is connected to the non-inverting input terminal of the second operational amplifier, and the output terminal of the second operational amplifier is connected to the variable frequency fan.
5. The control device of claim 2, wherein the control module comprises a processor and a three-stage voltage output circuit, the processor is connected to the control signal input end of the three-stage voltage output circuit, the power input end of the three-stage voltage output circuit is connected to the DC 12V output end of the conversion circuit, and the power output end of the three-stage voltage output circuit is connected to the variable frequency fan.
6. The control device of claim 5, wherein the three-stage voltage output circuit comprises a voltage dividing circuit, a first relay and a second relay, the voltage dividing circuit comprises a first voltage dividing resistor and a second voltage dividing resistor, the first voltage dividing resistor, the second voltage dividing resistor and the variable frequency fan are connected in series, the first relay is connected with the first voltage dividing resistor in parallel, the second relay is connected with the second voltage dividing resistor in series, and control signal input ends of the first relay and the second relay are connected with the processor.
7. The control device of claim 6, wherein the first relay and the second relay are solid state relays.
8. The control device of claim 1, further comprising a status indicator light, wherein the status indicator light is connected to the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921228216.8U CN211501048U (en) | 2019-07-31 | 2019-07-31 | Control device of variable frequency fan for purifying and sterilizing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921228216.8U CN211501048U (en) | 2019-07-31 | 2019-07-31 | Control device of variable frequency fan for purifying and sterilizing device |
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| CN211501048U true CN211501048U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921228216.8U Active CN211501048U (en) | 2019-07-31 | 2019-07-31 | Control device of variable frequency fan for purifying and sterilizing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469531A (en) * | 2019-07-31 | 2019-11-19 | 亿轶环境科技(上海)有限公司 | The control device and method of frequency conversion fan for purifying and sterilizing device |
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2019
- 2019-07-31 CN CN201921228216.8U patent/CN211501048U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469531A (en) * | 2019-07-31 | 2019-11-19 | 亿轶环境科技(上海)有限公司 | The control device and method of frequency conversion fan for purifying and sterilizing device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 1188 Jiuye Road, Qingpu District, Shanghai, 201712 Patentee after: Billion Oxygen Environmental Technology (Shanghai) Co.,Ltd. Address before: 201619 No. 1586 Changxing East Road, Dongjing Town, Songjiang District, Shanghai Patentee before: Yiyi Environmental Technology (Shanghai) Co.,Ltd. |
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| CP03 | Change of name, title or address |