CN210512048U - Fresh air exchanger control system - Google Patents
Fresh air exchanger control system Download PDFInfo
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- CN210512048U CN210512048U CN201921346283.XU CN201921346283U CN210512048U CN 210512048 U CN210512048 U CN 210512048U CN 201921346283 U CN201921346283 U CN 201921346283U CN 210512048 U CN210512048 U CN 210512048U
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Abstract
The utility model relates to a fresh air exchanger control system, which comprises a switch control box and at least one fresh air exchanger; the switch control box comprises a touch control module, a first controller and a wireless transmitting module; the fresh air exchanger comprises a case, a control panel, a motor and a total heat exchange core, wherein the control panel, the motor and the total heat exchange core are positioned in the case; the control panel is provided with a wireless receiving module and a second controller; the motor is connected to a signal output port of the second controller; the touch control module obtains a key signal of a user and transmits the key signal to the first controller; the first controller receives the key signal and sends the key signal to the second controller through the wireless transmitting module and the wireless receiving module; the second controller receives the key signal and sends a control signal to the motor; and the motor receives the control signal to operate. The fresh air exchanger control system has the advantages of convenience in installation, no need of pre-buried control lines, and convenience in later maintenance and transformation.
Description
Technical Field
The utility model relates to a new trend exchange machine control field especially relates to a new trend exchange machine control system.
Background
The fresh air exchanger is a fresh air and exhaust air interchanger containing a full total heat exchange core, on one hand, dirty indoor air is exhausted outdoors, on the other hand, fresh outdoor air is input indoors after being sterilized, disinfected, filtered and the like, and an advanced heat exchange technology is adopted in the air exchange process, so that the function of energy recovery is achieved, the indoor energy loss is reduced, and the air in a room is fresh and clean at every moment. The control of each function of a general fresh air exchanger is realized through a mechanical switch or a liquid crystal control panel. However, no matter the mechanical switch or the liquid crystal control panel needs to embed wires in the wall in advance, the motor of the fresh air switch and the power input terminal of the full heat exchange core are connected with the outdoor alternating current power supply through the embedded wires to get electricity, and therefore the mechanical switch or the liquid crystal control panel can control all functions of the fresh air switch.
Therefore, no matter a mechanical switch or a liquid crystal control panel is adopted to control the fresh air exchanger, the wires are required to be embedded, the installation difficulty is increased, and the follow-up maintenance and transformation are not facilitated.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a new trend exchange machine control system has simple to operate, the later maintenance of being convenient for and the advantage of transformation.
The fresh air exchanger control system comprises a switch control box and at least one fresh air exchanger which is wirelessly connected with the switch control box; the switch control box comprises a touch control module, a first controller and a wireless transmitting module which are electrically connected with each other; the fresh air exchanger comprises a case, a control panel arranged in the case, a motor and a total heat exchange core; the control panel is provided with a wireless receiving module and a second controller which are electrically connected with each other; the motor is connected to a signal output port of the second controller; the touch control module obtains a key signal of a user and transmits the key signal to the first controller; the first controller receives the key signal and sends the key signal to the second controller through the wireless transmitting module and the wireless receiving module; the second controller receives the key signal and sends a control signal to the motor; and the motor receives the control signal to operate.
Fresh air exchange machine control system's on-off control box can wireless control fresh air exchange machine's operation, simple to operate need not pre-buried control line, the advantage of being convenient for later maintenance and transformation.
Further, the first controller obtains an address code, generates an address code signal and sends the address code signal to the wireless receiving module through the wireless transmitting module; the wireless receiving module receives the address coding signal and sends the address coding signal to the second controller; the second controller receives and stores the address coding signal.
Further, the wireless transmitting module is a 2.4G transmitting module which comprises a 2.4G chip and an on-board antenna electrically connected with the first controller; the wireless receiving module is a 2.4G receiving module and comprises a 2.4G chip and an external antenna which are electrically connected with the second controller.
Further, the touch control module comprises a touch chip and a touch key connected to a signal input end of the touch chip.
Furthermore, the plurality of fresh air exchangers are connected in parallel through a serial port bus; a 485 module is also arranged on the control panel of the fresh air exchanger; and the data port of the 485 module is connected to the signal input port of the second controller, and the communication bus port of the 485 module is connected to the serial port bus.
Further, the 485 module comprises a 485 chip; the 485 chip is provided with a first communication port and a second communication port; the first communication port and the second communication port are connected to a serial port bus through matching resistors respectively; the first communication port is connected to the negative electrode of the power supply in series in a reverse direction through a first voltage stabilizing diode; two ends of the first voltage stabilizing diode are also connected with a first resistor in parallel; the second communication port is reversely connected in series to the negative electrode of the power supply through a second voltage stabilizing diode; and two ends of the second voltage stabilizing diode are also connected with a second resistor in parallel.
Furthermore, the 485 chip is also provided with an enabling trigger port, a data sending port and a data receiving port; the enabling trigger port is connected to a signal input port of the second controller through a third resistor and is also connected to the negative electrode of a power supply through a fourth resistor; the data transmission port is connected to a data output end of the second controller through a fifth resistor; the data receiving port is connected to a data receiving end of the second controller through a sixth resistor.
Furthermore, the control board is also provided with a motor driving circuit connected between a signal output port of the second controller and a power input terminal of the motor; the motor driving circuit comprises a driving chip and a relay; the signal input end of the driving chip is connected to the signal output end of the second controller; the relay comprises a coil and a contact switch; the control pin of the coil of the relay is connected to the signal output end of the driving chip, the power pin is connected to the positive electrode of the power supply, the first pin of the contact switch of the relay is connected to an alternating current commercial power live wire, and the second pin is connected to the driving terminal of the motor.
Further, the switch control box further comprises a buzzer connected to the signal output port of the first controller.
Further, the switch control box further comprises an indicator light connected to the signal output port of the first controller.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic block diagram of a control system of a fresh air exchanger according to the present invention;
fig. 2 is a schematic connection diagram of a control system of the fresh air exchanger according to the present invention;
fig. 3 is a schematic circuit diagram of the touch control module according to the present invention;
fig. 4 is a schematic circuit diagram of the first controller according to the present invention;
fig. 5 is a schematic circuit diagram of the wireless transmitting module of the present invention;
fig. 6 is a schematic circuit diagram of the buzzer of the present invention;
fig. 7 is a schematic circuit diagram of the wireless receiving module of the present invention;
fig. 8 is a schematic circuit diagram of a first portion of a second controller according to an embodiment of the present invention;
fig. 9 is a schematic circuit diagram of a second portion of a second controller according to an embodiment of the present invention;
fig. 10 is a schematic circuit diagram of a driving chip according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a circuit connection of a relay according to an embodiment of the present invention;
fig. 12 is a schematic circuit diagram of a 485 module according to an embodiment of the present invention.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Please refer to fig. 1 and fig. 2, wherein fig. 1 is a schematic block diagram of a control system of a fresh air exchanger according to the present invention; fig. 2 is a schematic connection diagram of the control system of the fresh air exchanger according to the present invention.
The embodiment of the utility model provides a fresh air exchanger control system, including on-off control box 10 and with on-off control box 10 wireless connection's fresh air exchanger 20. The switch control box 10 comprises a touch control module 11, a first controller 12 and a wireless transmitting module 13 which are electrically connected with each other; the fresh air exchanger 20 comprises a chassis (not shown), a control board (not shown) arranged inside the chassis, a motor 23 and a total heat exchange core (not shown); the control panel is provided with a wireless receiving module 21 and a second controller 22 which are electrically connected with each other; the motor 23 is connected to a signal output port of the second controller 22; the total heat exchange core is arranged on the fresh air duct and the exhaust air duct and transfers heat on the exhaust air duct to the fresh air duct so as to compensate the temperature of fresh air.
In the fresh air exchanger control system of the present invention, a user inputs an operation signal through the touch control module 11, and the touch control module 11 obtains a key signal of the user and transmits the key signal to the first controller 12; the first controller 12 receives the key signal and sends the key signal to the second controller 22 through the wireless transmitting module 13 and the wireless receiving module 21; the second controller 22 receives the key signal and sends a control signal to the motor 23; the motor 23 receives the control signal to operate. This new trend switch control system's on-off control box can wireless control new trend switch's operation, simple to operate need not pre-buried control line, the advantage of the later maintenance and the transformation of being convenient for.
In this embodiment, the switch control box 10 is a touch screen control box, the size of which is consistent with that of a 86-type switch, that is, the length and the width of which are 86 mm, and the switch control box is mounted and fixed on a wall by using 86 switch mounting holes, and can normally work by being connected to an alternating current commercial power 220V/50Hz power supply without mounting a battery. The switch control box 10 includes a panel, a touch control module 11 located below the panel and electrically connected to each other, a first controller 12, and a wireless transmission module 13.
The panel is provided with a startup and shutdown key icon, an exchange mode icon, a high-speed key icon, a low-speed key icon, a filter screen maintenance key icon, a timing shutdown key icon, a timing cancel key icon, an anion switch icon and a child lock key icon.
Referring to fig. 3, fig. 3 is a schematic circuit diagram of a touch control module according to the present invention. The touch control module 11 comprises a touch key and a touch chip; specifically, the touch keys are nine functional touch keys corresponding to the icons on the panel, and include a power on/off key, an exchange mode key, a high-speed key, a low-speed key, a filter screen maintenance key, a timing power off key, a timing cancel key, an anion switch key and a child lock key. Each touch key is connected to the signal input port of the touch chip through a matching resistor with a resistance value of 1K ohm. When the user presses the touch key of the corresponding function, the touch chip receives the key signal and transmits the key signal to the first controller 12 through the data transmission ports SDA and SCL.
Referring to fig. 4, fig. 4 is a schematic circuit diagram of the first controller according to the present invention.
The first controller 12 is used as a control device of the switch control box to realize related switch functions, and a control chip in the prior art is adopted, so that the specific manufacturer and model are not limited. The signal input ports P3.0 and P3.1 of the first controller 12 are configured to receive the key signals transmitted by the touch chip, encrypt the key signals, and finally transmit the key signals to the wireless transmitting module 13 through the signal output port, specifically, the first controller 12 transmits the key signals to the wireless transmitting module 13 in a cyclic transmission manner at intervals of 250ms every time, and the wireless transmitting module 13 transmits the encrypted key signals to the wireless receiving module 21 through the transmitting circuit.
The first controller 12 obtains an address code, generates an address code signal and sends the address code signal to the wireless receiving module 21 through the wireless transmitting module 13; the wireless receiving module 21 receives the address code signal and sends the address code signal to the second controller 22; the second controller 22 receives and stores the address code signal. Specifically, the address code is burnt into the memory area of the first controller 12 by the user, and the first controller 12 can obtain the address code signal. Therefore, the switch control box has a unique address code, the address code is stored in the memory of the second controller 22 after the fresh air switch receives the signal, and the fresh air switch can uniquely receive the key signal of the switch control box to realize the corresponding function.
In order to prevent the fresh air exchanger from being interfered by the outside, the first controller carries out encryption processing on the data signals, the function code data sent by each controller are unique, the main machine of the fresh air exchanger is uniquely controlled by the controller after being paired with the main machine, and false operation caused by interference of other controllers is avoided. And the first controller sends the current state function code of the line controller to the host at the cycle speed of every 250ms when not receiving a new key function command, so as to ensure that the operation function of the fresh air switch is synchronous and consistent with the function of the controller, and prevent the condition that the operation function of the fresh air switch is abnormal due to the accidental loss of the function code of the switch control box. If the state code of the first controller cannot be received within 10 seconds of the fresh air exchanger, the operation is automatically stopped to ensure the operation safety of the fresh air exchanger.
Please refer to fig. 5, fig. 5 is a schematic circuit diagram of a wireless transmitting module according to the present invention.
In this embodiment, the wireless transmitting module 13 is used for transmitting the key signal and the address coding signal, and may be a 2.4G transmitting module, and the carrier frequency of the transmitting module is 2.4124 Gh. The wireless transmitting module 13 comprises a 2.4G chip electrically connected with the first controller 12 and an on-board antenna, wherein the on-board antenna is a lead printed on a control board. Specifically, the communication ports between the 2.4G chip and the first controller 12 are RF _ CE, RF _ CSN, RF _ SCK, RF _ MOSI, RF _ MISO, and RF _ IRQ.
The switch control box 10 further includes indicator lights corresponding to the touch keys, that is, an indicator light is provided below each touch key, and each indicator light is connected to the signal output port of the first controller 12. When the relevant function of new trend switch operation, corresponding pilot lamp is lighted to indicate the current running state of new trend switch.
Referring to fig. 6, fig. 6 is a schematic circuit diagram of a buzzer according to the present invention. The switch control box 10 further includes a triode and a buzzer connected to a signal output port of the first controller 12. The positive pole of the buzzer is connected to a +3.3V direct-current power supply through an inductor L4, the negative pole of the buzzer is connected to the collector c of the triode Q1 through a resistor R22, the base b of the triode Q1 is connected to the signal output port P5.5 of the first controller 12 through a resistor R23, and the emitter e is grounded.
In this embodiment, a control board of the fresh air exchanger is provided with a wireless receiving module 21 and a second controller 22 which are electrically connected with each other. The wireless receiving module 21 receives the key signal and the address coding signal sent by the wireless transmitting module 13, and transmits the key signal and the address coding signal to the second controller 22; the second controller 22 receives and stores the key signal and the address coding signal, so that the corresponding connection between the fresh air switch and the switch control box is realized. Firstly, the switch control box is powered on, the standby key is pressed for 3s for a long time, the buzzer is heard to sound for a long time, the standby key is released, the standby indicator lamp on the switch control box flickers for 1 time per second at the moment, the standby indicator lamp is in a pairing state, the fresh air switch is powered on at the moment, pairing is automatically completed, the fresh air switch can receive and process pairing signals of the switch control box only within 20 seconds of being powered on, the controller of the fresh air switch and the controller of the switch control box are paired one by one, and after pairing is successful, the fresh air switch can receive control signals of a single switch control box, and signal crosstalk cannot occur.
Referring to fig. 7, fig. 7 is a schematic circuit diagram of a wireless receiving module according to the present invention.
In this embodiment, the wireless receiving module 21 is a 2.4G receiving module used in cooperation with the wireless transmitting module 13, and the carrier frequency thereof is 2.4124 Gh. The wireless receiving module 21 includes a 2.4G chip and an external antenna electrically connected to the second controller 22. Specifically, the communication ports between the 2.4G chip and the second controller 22 are RF _ CE, RF _ CSN, RF _ SCK, RF _ MOSI, RF _ MISO, and RF _ IRQ. The external antenna is detachably arranged on the side wall of the case and is connected with the 2.4G chip through a wire.
The second controller 22 is used as a control device of the fresh air exchanger to realize related functions, and a control chip in the prior art is adopted, so that the specific manufacturer and model are not limited. Referring to fig. 8 and 9, fig. 8 is a schematic circuit diagram of a first portion of the second controller according to an embodiment of the present invention; fig. 9 is a schematic circuit diagram of a second part of the second controller according to the embodiment of the present invention. The second controller 22 decrypts the encrypted key signal after receiving the encrypted key signal, compares the decrypted key signal with data prestored in the controller, controls the motor to execute a corresponding command if the decrypted key signal is consistent with the data prestored in the controller, discards the key signal if the decrypted key signal is inconsistent with the data prestored in the controller, and does not perform any action on the motor.
The motor 23 and the total heat exchange core are all devices existing in the prior art, and the specific model is not limited.
The motor 23 is connected to the signal output port of the second controller 22 through a motor driving circuit, the motor driving circuit includes a driving chip and a relay, and a specific connection schematic diagram thereof refers to fig. 10 and 11, where fig. 10 is a circuit connection schematic diagram of the driving chip according to an embodiment of the present invention; fig. 11 is a schematic circuit diagram of a relay according to an embodiment of the present invention. The signal input terminal IN1-IN7 of the driving chip is connected to the signal output terminal of the second controller 22; the relay comprises a coil and a contact switch; the control pin of the coil of the relay is connected to the signal output end of the driving chip, the power pin is connected to a +12 direct-current power supply, the first pin of the contact switch of the relay is connected to an alternating-current commercial power live wire, and the second pin is connected to the power input terminal of the motor 23. In this embodiment, the function of this new trend switch has high-speed air exhaust, low-speed air exhaust, high-speed new trend, low-speed new trend and anion new trend, consequently, has laid 5 groups of motor drive circuit on the control panel to realize corresponding function.
The total heat exchange core is provided with an exhaust channel and a fresh air channel which are arranged in a mutually staggered mode, wherein heat in the exhaust channel is transferred to the fresh air channel to achieve temperature compensation.
In one embodiment, the fresh air exchangers can be distributed in multiple numbers, and the multiple fresh air exchangers are connected in parallel through 485 serial port buses, so that remote centralized management of the multiple fresh air exchangers is facilitated. Therefore, every still be provided with the 485 module on the control panel of new trend switch, be connected to the serial port bus by the 485 module on.
In this embodiment, the serial bus may be a twisted pair. The twisted pair is formed by twisting a pair of metal conductors insulated from each other, and by adopting the mode, not only can the interference of a part of electromagnetic waves from the outside be resisted, but also the mutual interference among a plurality of pairs of twisted wires can be reduced. Two insulated wires are twisted together, interference signals act on the two wires twisted together, the interference signals are called common-mode signals, the common-mode signals can be eliminated in a differential circuit of a received signal, and differential-mode signals of useful signals can be extracted.
Please refer to fig. 12, which is a schematic circuit diagram of a 485 module according to an embodiment of the present invention.
In this embodiment, the 485 module may include a 485 chip whose model is SP485EEP and peripheral components, and in other embodiments, the 485 chip may also select other signals, which do not affect the implementation of the control system of the new air exchanger.
The data ports RXD and TXD of the 485 module are connected to the signal input port of the second controller 22, and the communication bus ports a and B of the 485 module are connected to the serial bus. The 485 module comprises a 485 chip; the 485 chip is provided with a first communication port A and a second communication port B; the first communication port A and the second communication port B are respectively connected to a serial port bus through matching resistors with the resistance value of 6.2 ohms; the first communication port A is reversely connected to the negative electrode of a power supply in series through a first voltage-stabilizing diode ZD 1; two ends of the first zener diode ZD1 are also connected in parallel with a first resistor with a resistance value of 22 ohms; the second communication port B is reversely connected to the negative electrode of the power supply in series through a second voltage-stabilizing diode ZD 2; two ends of the second zener diode ZD2 are also connected in parallel with a second resistor with a resistance value of 22 ohms. The 485 chip is also provided with an enabling trigger port DE, a data transmitting port RXD and a data receiving port TXD; the enable trigger ports DE and nRE are connected to a signal input port of the second controller 22 through a third resistor having a resistance value of 1K ohm, and are also connected to a power supply cathode through a fourth resistor having a resistance value of 22K ohm; the data transmission port RXD is connected to a data output end of the second controller 22 through a fifth resistor with a resistance value of 1K ohm; the data receiving port TXD is connected to a data receiving terminal of the second controller 22 through a sixth resistor having a resistance value of 1K ohm.
Further, the new trend switch still is provided with the temperature and humidity sensor who is connected to the signal input port of second controller 22 for detect service environment's humiture.
Furthermore, the new trend switch still is provided with and is connected to the PM2.5 sensor of the signal input port of second controller for detect service environment's PM2.5 value, whether it is clean to judge current air.
The fresh air exchanger control system also comprises a power module, wherein the power module converts alternating current commercial power into direct current low voltage power and outputs +12V direct current and +5V direct current; the +12V direct current is transmitted to a power supply pin of a driving chip of the motor driving circuit and power supply pins of the two relays so as to ensure the normal work of the motor driving circuit; the +5V direct current is transmitted to the main control chip and the peripheral circuit so as to ensure the normal work of the main control chip and the peripheral circuit.
In the fresh air exchanger control system of the utility model, a user inputs an operation signal through the touch key, and the touch key acquires a key signal of the user and then transmits the key signal to the first controller; the first controller receives the key signal and sends the key signal to the second controller through the wireless transmitting module and the wireless receiving module; the second controller receives the key signal and sends a control signal to the motor to control the high-grade or low-grade operation of the motor. This new trend switch control system's on-off control box can wireless control new trend switch's operation, simple to operate need not pre-buried control line, is convenient for later maintenance and transformation. And the switch control box also has the functions of running state display, running state memory, child lock, data encryption and the like, each switch control box has a unique address code, and the fresh air switch can be connected in a butt joint mode when being started and stores the address code, so that the fresh air switch can only receive a control signal of one switch control box and cannot be influenced by other switch control boxes on upper floors and lower floors. Simultaneously, when needing to carry out centralized management control to many new trend switches in an area, can also parallelly connected many new trend switches through the 485 bus to realize overall control.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. A fresh air exchanger control system is characterized in that: the system comprises a switch control box and at least one fresh air exchanger which is in wireless connection with the switch control box; the switch control box comprises a touch control module, a first controller and a wireless transmitting module which are electrically connected with each other; the fresh air exchanger comprises a case, a control panel arranged in the case, a motor and a total heat exchange core; the control panel is provided with a wireless receiving module and a second controller which are electrically connected with each other; the motor is connected to a signal output port of the second controller; the touch control module obtains a key signal of a user and transmits the key signal to the first controller; the first controller receives the key signal and sends the key signal to the second controller through the wireless transmitting module and the wireless receiving module; the second controller receives the key signal and sends a control signal to the motor; and the motor receives the control signal to operate.
2. The fresh air switch control system according to claim 1, wherein: the first controller obtains an address code, generates an address code signal and sends the address code signal to the wireless receiving module through the wireless transmitting module; the wireless receiving module receives the address coding signal and sends the address coding signal to the second controller; the second controller receives and stores the address coding signal.
3. The fresh air switch control system according to claim 1, wherein: the wireless transmitting module is a 2.4G transmitting module and comprises a 2.4G chip and an on-board antenna which are electrically connected with the first controller; the wireless receiving module is a 2.4G receiving module and comprises a 2.4G chip and an external antenna which are electrically connected with the second controller.
4. The fresh air switch control system according to claim 1, wherein: the touch control module comprises a touch chip and a touch key connected to a signal input end of the touch chip.
5. The fresh air switch control system according to claim 1, wherein: the fresh air exchangers are connected in parallel through a serial port bus; a 485 module is also arranged on the control panel of the fresh air exchanger; and the data port of the 485 module is connected to the signal input port of the second controller, and the communication bus port of the 485 module is connected to the serial port bus.
6. The fresh air switch control system according to claim 5, wherein: the 485 module comprises a 485 chip; the 485 chip is provided with a first communication port and a second communication port; the first communication port and the second communication port are connected to a serial port bus through matching resistors respectively; the first communication port is connected to the negative electrode of the power supply in series in a reverse direction through a first voltage stabilizing diode; two ends of the first voltage stabilizing diode are also connected with a first resistor in parallel; the second communication port is reversely connected in series to the negative electrode of the power supply through a second voltage stabilizing diode; and two ends of the second voltage stabilizing diode are also connected with a second resistor in parallel.
7. The fresh air switch control system according to claim 6, wherein: the 485 chip is also provided with an enabling trigger port, a data sending port and a data receiving port; the enabling trigger port is connected to a signal input port of the second controller through a third resistor and is also connected to the negative electrode of a power supply through a fourth resistor; the data transmission port is connected to a data output end of the second controller through a fifth resistor; the data receiving port is connected to a data receiving end of the second controller through a sixth resistor.
8. The fresh air switch control system according to claim 1, wherein: the control panel is also provided with a motor driving circuit connected between a signal output port of the second controller and a power input terminal of the motor; the motor driving circuit comprises a driving chip and a relay; the signal input end of the driving chip is connected to the signal output end of the second controller; the relay comprises a coil and a contact switch; the control pin of the coil of the relay is connected to the signal output end of the driving chip, the power pin is connected to the positive electrode of the power supply, the first pin of the contact switch of the relay is connected to an alternating current commercial power live wire, and the second pin is connected to the driving terminal of the motor.
9. The fresh air switch control system according to claim 1, wherein: the switch control box further comprises a buzzer connected to the signal output port of the first controller.
10. The fresh air switch control system according to claim 1, wherein: the switch control box further comprises an indicator light connected to the signal output port of the first controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921346283.XU CN210512048U (en) | 2019-08-19 | 2019-08-19 | Fresh air exchanger control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921346283.XU CN210512048U (en) | 2019-08-19 | 2019-08-19 | Fresh air exchanger control system |
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| CN210512048U true CN210512048U (en) | 2020-05-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536644A (en) * | 2020-05-14 | 2020-08-14 | 卢利华 | Indoor air epidemic prevention and purification system based on unidirectional flow wall-mounted fresh air machine |
| CN111765553A (en) * | 2020-06-17 | 2020-10-13 | 卢利华 | Air epidemic prevention and purification system based on one-way wall-mounted fresh air machine |
-
2019
- 2019-08-19 CN CN201921346283.XU patent/CN210512048U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536644A (en) * | 2020-05-14 | 2020-08-14 | 卢利华 | Indoor air epidemic prevention and purification system based on unidirectional flow wall-mounted fresh air machine |
| CN111765553A (en) * | 2020-06-17 | 2020-10-13 | 卢利华 | Air epidemic prevention and purification system based on one-way wall-mounted fresh air machine |
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