Purification controller and purification device

Abstract

The utility model discloses a purification controller and a purification device, the purification controller is electrically connected with a fan, the purification controller comprises a master control circuit and a gas detection circuit, the gas detection circuit is electrically connected with the master control circuit, and the master control circuit is electrically connected with the fan. And the main control circuit is used for receiving an external detection signal and outputting a corresponding detection result signal to the main control circuit according to the received external detection signal, so that the main control circuit controls the fan to work. The utility model aims to improve the working reliability of the purification controller, and further improve the safety and reliability of the purification device.

Description

Technical Field

[0001] The present application relates to the technical field of purification control, and in particular to a purification controller and a purification device. Background Art

[0002] As people's living standards improve, they pay more and more attention to the quality of the gases around them. For example, gases such as carbon monoxide, carbon dioxide, volatile organic compounds (VOC), PM2.5, nitrogen monoxide, sulfur monoxide, and even particles contained in the gases will affect human health when exposed in the environment, and even endanger life in serious cases. Therefore, it is very important to propose a safe and reliable purification device. Utility Model Content

[0003] The main purpose of the utility model is to provide a purification controller and a purification device, aiming to improve the reliability of the purification controller, thereby improving the safety and reliability of the purification device.

[0004] To achieve the above object, the utility model provides a purification controller, which is electrically connected to a fan and includes:

[0005] Main control circuit;

[0006] The gas detection circuit is electrically connected to the main control circuit and is used to receive an external detection signal and output a corresponding detection result signal to the main control circuit according to the received external detection signal, so that the main control circuit controls the operation of the fan.

[0007] Optionally, the gas detection circuit includes a first detection input terminal and a second detection input terminal, a first resistor, a first filter resistor, a first filter capacitor, a second resistor, a bypass capacitor, an optocoupler, a transistor, a diode and a relay, wherein the first end of the first resistor is electrically connected to the second detection input terminal, the first filter resistor and the first filter capacitor are connected in parallel, the first filter resistor and the first common connection terminal of the first filter capacitor, the first detection input terminal, and the first input terminal of the optocoupler are interconnected, the first filter resistor and the second common connection terminal of the first filter capacitor, the second end of the first resistor, and the second input terminal of the optocoupler are interconnected, the second resistor and the bypass capacitor are connected in parallel, the output end of the optocoupler, the second resistor and the first common connection terminal of the bypass capacitor, and the base of the transistor are interconnected, the second resistor and the second common connection terminal of the bypass capacitor, and the emitter of the transistor are interconnected, and the collector of the transistor is interconnected with the anode of the diode and the relay.

[0008] Optionally, the purification controller includes:

[0009] A display component, the display component is electrically connected to the main control circuit;

[0010] The main control circuit is also used to control the operation of the display component according to the detection result signal.

[0011] Optionally, the purification controller includes:

[0012] A communication circuit, the communication circuit is electrically connected to the main control circuit, and the communication circuit includes a communication terminal for communicating with an external terminal;

[0013] The main control circuit is used to output the detection result signal to an external terminal via the communication end, and to receive an external detection signal output by the external terminal via the communication end.

[0014] Optionally, the purification controller further includes:

[0015] A wireless receiving module, the wireless receiving module is electrically connected to the main control circuit;

[0016] The wireless receiving module is used to receive a remote control signal and output the remote control signal to the main control circuit to enable the main control circuit to operate.

[0017] Optionally, the purification controller further includes:

[0018] a warning circuit, the warning circuit being electrically connected to the main control circuit;

[0019] The main control circuit is used to control the operation of the warning circuit according to the detection result signal.

[0020] Optionally, the purification controller includes:

[0021] Power input terminal, used to access AC voltage;

[0022] A voltage conversion circuit, wherein the controlled end of the voltage conversion circuit is electrically connected to the main control circuit, the input end of the voltage conversion circuit is electrically connected to the power input end, the output end of the voltage conversion circuit is electrically connected to the fan, and is used to output an electrical signal to the fan after voltage conversion of the AC voltage, so as to drive the fan to rotate.

[0023] Optionally, the voltage conversion circuit includes:

[0024] a rectifier circuit, wherein an input end of the rectifier circuit is electrically connected to the power input end and is used to rectify the AC voltage and output a first DC signal;

[0025] An inverter circuit, wherein an input end of the inverter circuit is electrically connected to an output end of the rectifier circuit and is used to invert the first DC signal and output a corresponding first AC signal.

[0026] Optionally, the purification controller includes:

[0027] A trigger component, the trigger component is electrically connected to the main control circuit and is used to output a corresponding trigger signal to the main control circuit when triggered by a user;

[0028] The main control circuit is also used to control the operation of the voltage conversion circuit according to the trigger signal.

[0029] The utility model also proposes a purification device, which includes the purification controller and a fan as described in any one of the above items.

[0030] The utility model proposes a purification controller, which is electrically connected to a fan. The purification controller comprises a main control circuit and a gas detection circuit. The gas detection circuit is electrically connected to the main control circuit and is used to receive an external detection signal and output a corresponding detection result signal to the main control circuit according to the received external detection signal, so that the main control circuit controls the operation of the fan.

[0031] In practical applications, the gas detection circuit can be electrically connected to a sensor for detecting gas concentration. For example, when the sensor detects that the gas concentration is higher than a preset concentration threshold, it outputs a corresponding external detection signal to the gas detection circuit, so that the gas detection circuit outputs a corresponding detection result signal to the main control circuit, and the main control circuit controls the fan to start according to the received detection result signal to purify the gas. In this way, harmful gases can be prevented from endangering people's health and user safety can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 This is a schematic diagram of a circuit module of an embodiment of a purification controller of the utility model;

[0034] Figure 2 This is a schematic diagram of a circuit module of another embodiment of the purification controller of the utility model;

[0035] Figure 3This is a schematic diagram of a circuit module of another embodiment of the purification controller of the utility model;

[0036] Figure 4 This is a schematic diagram of a circuit module of another embodiment of the purification controller of the utility model;

[0037] Figure 5 This is a schematic diagram of a circuit module of another embodiment of the purification controller of the utility model;

[0038] Figure 6 This is a schematic diagram of a circuit module of another embodiment of the purification controller of the utility model;

[0039] Figure 7 This is a schematic diagram of a circuit module of another embodiment of the purification controller of the utility model;

[0040] Figure 8 This is a schematic diagram of a circuit module of another embodiment of the purification controller of the utility model;

[0041] Fig. 9 This is a specific circuit diagram of an embodiment of a gas detection circuit of the utility model;

[0042] Fig.10 It is a specific circuit diagram of an embodiment of the trigger component of the utility model.

[0043] Description of Figure Numbers:

[0044] Label name Label name 10 Main control circuit 20 Gas detection circuit 30 Display Components 40 Communication circuit 50 Wireless receiving module 60 Warning circuit 70 Voltage conversion circuit 71 Rectification circuit 72 Inverter circuit 80 Power input terminal 90 Trigger Component

[0045] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0048] As people's living standards improve, they pay more and more attention to the quality of the gases around them. For example, gases such as carbon monoxide, carbon dioxide, volatile organic compounds (VOC), PM2.5, nitrogen monoxide, sulfur monoxide, and even particles contained in the gases will affect human health when exposed in the environment, and even endanger life in serious cases. Therefore, it is very important to propose a safe and reliable purification device.

[0049] To this end, the utility model proposes a purification controller, the purification controller is electrically connected to the fan, Figure 1 , the purification controller comprises:

[0050] Main control circuit 10;

[0051] The gas detection circuit 20 is electrically connected to the main control circuit 10 and is used to receive an external detection signal and output a corresponding detection result signal to the main control circuit 10 according to the received external detection signal, so that the main control circuit 10 controls the operation of the fan.

[0052] In this embodiment, the main control circuit 10 can be implemented by a main controller, such as MCU, DSP (Digital Signal Process), FPGA (Field Programmable Gate Array), PLC, SOC (System On Chip), etc. The gas detection circuit 20 can be implemented by a circuit composed of a switch tube, a filter circuit, and an optical coupler.

[0053] It is understandable that the input end of the gas detection circuit 20 can be connected to a gas sensor, such as an electrochemical gas sensor, an optical gas sensor, a contact combustion gas sensor, etc., for detecting preset gases, including but not limited to the detection of gases such as CO, H2S, SO2, CO2, SF6, CH4, NOx, NH3, H2, etc. That is, the external detection signal includes the signal output by the gas sensor. It should be noted that the number of gas detection circuits 20 of the purification controller of the utility model can be multiple, and the input ends of the multiple gas detection circuits 20 are electrically connected to multiple gas sensors one by one, and the multiple gas sensors are used to detect the concentration of at least two gases.

[0054] Specifically, when the gas sensor detects that the concentration of the gas is higher than the preset concentration threshold, it will output a corresponding external detection signal to the input end of the gas detection circuit 20, so that the gas detection circuit 20 outputs a corresponding detection result signal to the main control circuit 10. When the main control circuit 10 determines that the gas concentration is too high according to the detection result signal, it controls the fan to purify the gas to avoid environmental pollution and harm to the body caused by excessive gas concentration. Among them, the preset concentration threshold is set in advance by the R&D personnel.

[0055] In practical applications, the purification controller of the utility model can be connected to a gas sensor that detects different gas concentrations, and drive the fan to rotate according to actual needs to purify the gas. In this way, the safety and practicality of the purification controller are improved, thereby improving the reliability and functional diversity of the purification device.

[0056] In one embodiment of the present invention, reference Fig. 9 The gas detection circuit 20 includes a first detection input terminal and a second detection input terminal, a first resistor, a first filter resistor, a first filter capacitor, a second resistor, a bypass capacitor, an optocoupler, a transistor, a diode and a relay, wherein the first end of the first resistor is electrically connected to the second detection input terminal, the first filter resistor and the first filter capacitor are connected in parallel, the first filter resistor and the first common connection terminal of the first filter capacitor, the first detection input terminal, and the first input terminal of the optocoupler are interconnected, the first filter resistor and the second common connection terminal of the first filter capacitor, the second end of the first resistor, and the second input terminal of the optocoupler are interconnected, the second resistor and the bypass capacitor are connected in parallel, the output end of the optocoupler, the second resistor and the first common connection terminal of the bypass capacitor, and the base of the transistor are interconnected, the second resistor and the second common connection terminal of the bypass capacitor, and the emitter of the transistor are interconnected, and the collector of the transistor is interconnected with the anode of the diode and the relay.

[0057] In this embodiment, the first detection input terminal is connected to a +5V power supply, the second detection input terminal DO3 is used to be electrically connected to the gas sensor, and R1 is a filter circuit composed of a first resistor, a first filter resistor R2 and a first filter capacitor C1, which is used to filter the signal connected to the input terminal of the gas detection circuit 20 to filter out the clutter interference signal. When the concentration of the preset gas in the room is higher than the preset concentration threshold, such as the gas sensor detects that the CO2 concentration is higher than the preset concentration threshold, the external detection signal of the output voltage is sent to the second detection input terminal DO3. At this time, the second detection input terminal DO3 is connected to a low-level signal, the optocoupler device U is turned on, the transistor Q is turned on, the coil of the relay k is energized, and the contacts of the relay are closed, so the corresponding detection result signal is output to the main control circuit 10 through the output terminals L1 and L2. The main control circuit 10 controls the fan to rotate according to the detection result signal to purify the gas. It should be noted that the diode D1 is used to clamp the collector voltage of the transistor below +24V. Since the coil of the relay is equivalent to the inductor, when the relay is turned off, since the inductor current cannot change suddenly, a large reverse voltage will appear at both ends of the relay coil, which may damage the transistor. Therefore, a diode D1 is connected in parallel at both ends of the coil to release the inductor energy and clamp the inductor discharge voltage, thereby protecting the transistor and avoiding damage to the transistor, which causes the circuit to fail to work properly, thereby improving the reliability of the purification controller. In addition, the second resistor R3 can ensure that the base is pulled down to the same potential as the emitter when the optocoupler is turned off, and the bypass capacitor C2 mainly plays a bypass role for high-frequency signals. For high-frequency signals, its frequency is relatively high, and the capacitor presents a state of passage, so the high-frequency signal will be bypassed by the capacitor and will not be amplified by the transistor. Therefore, the bypass capacitor C2 can effectively eliminate the interference of noise signals.

[0058] Through the above settings, the gas detection circuit 20 can monitor the external detection signal, and output the corresponding detection result signal to the main control circuit 10 when receiving the external detection signal. The main control circuit 10 controls the fan to work to reduce the gas concentration and achieve the purpose of purification. In this embodiment, the gas detection circuit 20 is composed of components such as resistors, capacitors, transistors, and diodes. The circuit structure is simple and the design cost of the circuit is reduced.

[0059] In one embodiment, reference Figure 2 , the purification controller comprises:

[0060] A display component 30, wherein the display component 30 is electrically connected to the main control circuit 10;

[0061] The main control circuit 10 is also used to control the display component 30 to work according to the detection result signal.

[0062] In this embodiment, the display component 30 can be implemented by a display screen plus a corresponding driving module, such as an LCD screen and an LCD screen driving module, an LED screen and an LED screen driving module, and an OLED screen and an OLED screen driving module.

[0063] Specifically, in combination with the above-mentioned embodiments, when the gas monitored by the purification controller exceeds the preset concentration threshold, the gas sensor outputs the corresponding external detection signal to the input end of the gas detection circuit 20, so that the gas detection circuit 20 outputs the corresponding detection result signal to the main control circuit 10, and the main control circuit 10 controls the fan to work. In addition, when the main control circuit 10 receives the detection signal result, it can control the drive module output to the display screen to make the drive module work and display the parameter value corresponding to the detection result signal on the display screen. Among them, the parameter value includes gas type, gas content, gas concentration, etc. In this embodiment, a 12864 resolution LCD screen can be selected as the display component 30 to display the menu interface. In this way, the user can observe the various parameter values ​​of the gas in real time through the display component 30, so that the user can take relevant treatment measures before the gas reaches the set value, such as manually turning on the fan to purify the gas.

[0064] The setting of the display component 30 enables the user to observe the parameter value of the detected gas in real time, making the detection result more intuitive and improving the user's convenience.

[0065] In one embodiment, reference Figure 3 , the purification controller comprises:

[0066] A communication circuit 40, the communication circuit 40 is electrically connected to the main control circuit 10, and the communication circuit 40 includes a communication terminal for communicating with an external terminal;

[0067] The main control circuit 10 is used to output the detection result signal to an external terminal via the communication end, and to receive an external detection signal output by the external terminal via the communication end.

[0068] In this embodiment, the communication circuit 40 can be implemented by a wired communication module, such as a LIN communication module, a CAN communication module, an RS485 transceiver chip, etc., and the corresponding bus type is selected according to the communication module. The communication module can also be implemented by a wireless communication module, such as a WiFi module, a Bluetooth communication module, a 4G / 5G module, etc.

[0069] Specifically, the purification controller of the utility model can establish a communication connection with an external terminal via the communication terminal of the communication circuit 40, wherein the external terminal includes a mobile phone, a tablet, a computer, etc. If the purification controller is provided with a 485 communication interface, the user can access the external terminal through the 485 communication interface, the main control circuit 10 can upload the detection result signal to the external terminal via the communication terminal, and the user can observe the change of the gas parameter value through the display screen of the external terminal. In addition, the user can also realize the remote input control of the purification device through the controller, touch screen, and keyboard of the external terminal. In this way, if the detected gas is a harmful gas, the user only needs to monitor the gas parameter value through the external terminal and remotely start the fan rotation in time according to the actual situation, without having to trigger the fan's starting device specifically in an environment containing harmful gases. In this way, the purification controller of the utility model improves the user's convenience and safety.

[0070] In one embodiment, reference Figure 4 , the purification controller also includes:

[0071] A wireless receiving module 50, wherein the wireless receiving module 50 is electrically connected to the main control circuit 10;

[0072] The wireless receiving module 50 is used to receive a remote control signal and output the remote control signal to the main control circuit 10 to enable the main control circuit 10 to operate.

[0073] In this embodiment, the wireless receiving module 50 can be implemented by an infrared receiver, a radio frequency (RF) module, etc.

[0074] Specifically, the purification device may include a remote controller. When the user presses the function button of the remote controller, the transmitting module in the remote controller will output the corresponding remote control signal to the wireless receiving module 50 of the purification controller, so that the wireless receiving module 50 receives the remote control signal and outputs it to the main control circuit 10, so that the main control circuit 10 works. For example, the remote controller includes a button for controlling the start and stop of the purification device. When the user presses the start button, the corresponding start signal is output to the wireless receiving module 50. When the main control circuit 10 receives the start signal, it is output to the main control circuit 10. The main control circuit 10 controls the power supply to supply power to the functional modules such as the communication circuit 40 and the gas detection circuit 20 to control the operation of each functional module. Similarly, when the user presses the stop button, the wireless receiving module 50 will receive the stop signal to the main control circuit 10, so that the main control circuit 10 controls each functional module to stop working and is in a standby state. Among them, the remote control signal includes a start signal and a stop signal. In addition, a speed adjustment button may be provided on the remote controller so that the user can control the speed of the fan through the speed adjustment button. For example, when the gas content is lower than the preset value, the user can control the fan to rotate at a lower speed through the speed adjustment button, and when the gas content is higher than the preset value, the speed adjustment button can be used to accelerate the fan rotation to speed up the purification work efficiency. It should be noted that the preset value is set in advance by the R&D personnel. In this embodiment, the user can control the working state of the purification controller within a diameter range of 100 meters through the function buttons on the remote control.

[0075] The setting of the wireless receiving module 50 enables the user to control the purification device within a preset range through the remote control, thereby improving the functional diversity of the purification controller. At the same time, different functional buttons can be set on the remote control to improve the convenience of user use.

[0076] In one embodiment of the present invention, reference Figure 5 , the purification controller also includes:

[0077] a warning circuit 60, wherein the warning circuit 60 is electrically connected to the main control circuit 10;

[0078] The main control circuit 10 is used to control the operation of the warning circuit 60 according to the detection result signal.

[0079] In this embodiment, the warning circuit 60 can be implemented by a buzzer warning module, an LED light warning module, a vibration motor warning module, etc.

[0080] In combination with the above embodiments, when the gas sensor detects that the concentration of the gas is higher than the preset concentration threshold, it will output a corresponding external detection signal to the input end of the gas detection circuit 20, so that the gas detection circuit 20 outputs the corresponding detection result signal to the main control circuit 10. When the main control circuit 10 determines that the gas concentration is too high according to the detection result signal, it controls the fan to work to purify the gas. In addition, the main control device can also control the warning module to work according to the detection result signal, for example, the main control circuit 10 controls the buzzer warning module to work, so as to remind the user that the current gas exceeds the standard and needs to be purified in time to avoid environmental pollution and harm to the body caused by excessive gas concentration. Optionally, the warning circuit 60 can also be implemented by an LED light warning module, and the main control circuit 10 controls the light change of the LED light according to the detection result signal. For example, when the gas parameter value corresponding to the detection result signal is less than the first preset value, the main control circuit 10 controls the LED light to emit green light, when the gas parameter value is greater than the first preset value and less than the second preset value, the main control circuit 10 controls the LED light to emit yellow light, and when the gas parameter value is greater than the second preset value, the LED light will show red light. In this way, the user can intuitively judge whether the gas is within the safe range by the color of the LED light. The first preset value and the second preset value are set in advance by the R&D personnel. In this way, early warning can be achieved through the warning circuit 60, thereby improving the safety of the user.

[0081] In one embodiment, reference Figure 6 , the purification controller comprises:

[0082] A power input terminal 80 is used to receive an AC voltage;

[0083] A voltage conversion circuit 70, wherein the controlled end of the voltage conversion circuit 70 is electrically connected to the main control circuit 10, the input end of the voltage conversion circuit 70 is electrically connected to the power input end 80, and the output end of the voltage conversion circuit 70 is electrically connected to the fan, and is used to convert the AC voltage into an electrical signal and output it to the fan to drive the fan to rotate.

[0084] Among them, reference Figure 7 , the voltage conversion circuit 70 includes:

[0085] A rectifier circuit 71, wherein an input terminal of the rectifier circuit 71 is electrically connected to the power input terminal 80 and is used to rectify the AC voltage and output a first DC signal;

[0086] The inverter circuit 72 has an input end electrically connected to an output end of the rectifier circuit 71 and is used to invert the first DC signal and output a corresponding first AC signal.

[0087] In this embodiment, the voltage conversion circuit 70 can be implemented by at least one of a switch tube, an inverter, a rectifier, a filter circuit, a buck-boost circuit, or a voltage conversion chip. The rectifier circuit 71 can be implemented by a rectifier bridge circuit composed of a triode, a MOS tube or a plurality of diodes, and the inverter circuit 72 can be composed of at least one switch tube, an inductor, a capacitor and other devices, such as a three-phase bridge inverter circuit 72.

[0088] Specifically, when the power input terminal 80 is connected to the AC voltage of the three-phase power supply, the voltage conversion circuit 70 will convert the AC voltage, such as after being processed by the filter circuit, the rectifier circuit 71, and the inverter circuit 72 in sequence, and then output the corresponding electrical signal to the fan to control the rotation of the fan and purify the indoor air. The rectifier circuit 71 rectifies the AC voltage and outputs a first DC signal to the inverter circuit 72, so that the inverter circuit 72 inverts the first DC signal and outputs a first AC signal to the fan. In this way, the main control circuit 10 can adjust the speed and output power of the motor according to the first AC signal output by the inverter circuit 72, and perform adaptive adjustment according to the required output pressure and flow rate, that is, the main control circuit 10 can change the speed and output power of the fan with the change of the power supply frequency. By changing the fan output voltage, changing the output voltage frequency, etc., the effect of adjusting the fan output air volume can be achieved, thereby improving the fan efficiency and reducing energy consumption. In this embodiment, the carrier frequency of the purification device can be increased to 16K to reduce the noise of the fan rotation.

[0089] Optionally, refer to Figure 8 , the purification controller comprises:

[0090] A trigger component 90, the trigger component 90 is electrically connected to the main control circuit 10 and is used to output a corresponding trigger signal to the main control circuit 10 when triggered by a user;

[0091] The main control circuit 10 is further used to control the voltage conversion circuit 70 to work according to the trigger signal.

[0092] In this embodiment, the trigger component 90 can be implemented by a physical key or a virtual key. Taking the virtual key as an example, the trigger component 90 can be integrated with the display component 30 on the same integrated chip, that is, the user can control the purification device through the virtual key on the display component 30 or the display screen in the external terminal. In this embodiment, the trigger component 90 includes at least a first trigger component, a second trigger component, a third trigger component, a fourth trigger component, and a fifth trigger component. Fig.10As shown, U1 is a capacitive touch sensing chip, and multiple key input terminals of U1 are electrically connected to multiple trigger components 90 one by one, such as the first trigger component is electrically connected to the key input terminal KEY1 of U1. When the user triggers the first trigger component, the capacitive analog sensing chip U1 conducts the path between the first key output terminal OUT1 and the key input terminal KEY1, so that the main control circuit 10 receives the first trigger signal and works according to the received first trigger signal. Among them, the first trigger component includes a purification button (PURIFIER). When the user presses the purification button, the purification controller is always in a working state to monitor the gas and control the fan to rotate when it exceeds the preset value to achieve the purpose of purifying the air. When the user does not press the purification button, the purification controller is in a low power consumption mode to reduce energy consumption and increase service life. The second trigger component is a mode selection button (MODE), and the mode selection button corresponds to the working mode of the purification controller, such as frequency setting, parameter setting, help and other modes. The third trigger component includes a start button, which is used to output a corresponding third trigger signal to the main control circuit 10 to control the fan to work. The fourth trigger component includes an up key (UP) and the fifth trigger component includes a down key (DOWM), which are used to adjust the frequency corresponding to the first AC signal to adjust the speed of the fan.

[0093] Through the above settings, the user can control the purification controller through various function buttons, and the trigger component 90 is implemented with a virtual button, which can play a dust-proof effect, prevent false triggering and is not easy to be damaged. In this way, the user's convenience and user experience are improved.

[0094] The utility model also proposes a purification device, which includes the purification controller and a fan as described in any one of the above items.

[0095] It is worth noting that since the purification device of the present invention is based on the above-mentioned purification controller, the embodiments of the purification device of the present invention include all technical solutions of all embodiments of the above-mentioned purification controller, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0096] The above description is only an optional embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the inventive concept of the utility model, or directly / indirectly used in other related technical fields are included in the scope of the utility model.

Claims

1. A purification controller, the purification controller is electrically connected to a fan, characterized in that: The purification controller comprises: Main control circuit; The gas detection circuit is electrically connected to the main control circuit and is used to receive an external detection signal and output a corresponding detection result signal to the main control circuit according to the received external detection signal, so that the main control circuit controls the operation of the fan.

2. The purification controller according to claim 1, characterized in that: The gas detection circuit includes a first detection input terminal and a second detection input terminal, a first resistor, a first filter resistor, a first filter capacitor, a second resistor, a bypass capacitor, an optocoupler, a transistor, a diode and a relay, wherein the first end of the first resistor is electrically connected to the second detection input terminal, the first filter resistor and the first filter capacitor are connected in parallel, the first filter resistor and the first common connection terminal of the first filter capacitor, the first detection input terminal and the first input terminal of the optocoupler are interconnected, the first filter resistor and the second common connection terminal of the first filter capacitor, the second end of the first resistor and the second input terminal of the optocoupler are interconnected, the second resistor and the bypass capacitor are connected in parallel, the output end of the optocoupler, the second resistor and the first common connection terminal of the bypass capacitor and the base of the transistor are interconnected, the second resistor and the second common connection terminal of the bypass capacitor and the emitter of the transistor are interconnected, and the collector of the transistor is interconnected with the anode of the diode and the relay.

3. The purification controller according to any one of claims 1 to 2, characterized in that: The purification controller comprises: A display component, the display component is electrically connected to the main control circuit; The main control circuit is also used to control the operation of the display component according to the detection result signal.

4. The purification controller according to any one of claims 1 to 2, characterized in that: The purification controller comprises: A communication circuit, the communication circuit is electrically connected to the main control circuit, and the communication circuit includes a communication terminal for communicating with an external terminal; The main control circuit is used to output the detection result signal to an external terminal via the communication end, and to receive an external detection signal output by the external terminal via the communication end.

5. The purification controller according to any one of claims 1 to 2, characterized in that: The purification controller also includes: A wireless receiving module, the wireless receiving module is electrically connected to the main control circuit; The wireless receiving module is used to receive a remote control signal and output the remote control signal to the main control circuit to enable the main control circuit to operate.

6. The purification controller according to any one of claims 1 to 2, characterized in that: The purification controller also includes: a warning circuit, the warning circuit being electrically connected to the main control circuit; The main control circuit is used to control the operation of the warning circuit according to the detection result signal.

7. The purification controller according to claim 1, characterized in that: The purification controller comprises: Power input terminal, used to access AC voltage; A voltage conversion circuit, wherein the controlled end of the voltage conversion circuit is electrically connected to the main control circuit, the input end of the voltage conversion circuit is electrically connected to the power input end, the output end of the voltage conversion circuit is electrically connected to the fan, and is used to output an electrical signal to the fan after voltage conversion of the AC voltage, so as to drive the fan to rotate.

8. The purification controller according to claim 7, characterized in that: The voltage conversion circuit comprises: a rectifier circuit, wherein an input end of the rectifier circuit is electrically connected to the power input end and is used to rectify the AC voltage and output a first DC signal; An inverter circuit, wherein an input end of the inverter circuit is electrically connected to an output end of the rectifier circuit and is used to invert the first DC signal and output a corresponding first AC signal.

9. The purification controller according to claim 7, characterized in that: The purification controller comprises: A trigger component, the trigger component is electrically connected to the main control circuit and is used to output a corresponding trigger signal to the main control circuit when triggered by a user; The main control circuit is also used to control the operation of the voltage conversion circuit according to the trigger signal.

10. A purification device, characterized in that: The purification device comprises a purification controller and a fan as described in any one of claims 1 to 9.

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