Water-mist-free humidifier control circuit

Abstract

The utility model relates to the technical field of humidifier control, in particular to a water-mist-free type humidifier control circuit, which comprises a power supply module used for converting 220V commercial power into 24V DC (direct current); the humidity detection module is used for detecting humidity and converting a detected humidity signal into a humidity electric signal; the power supply input end of the control module is electrically connected with DC 24V, the corresponding input end of the control module is electrically connected with the humidity detection module, and the control module is used for receiving the humidity electric signal; the input end of the motor driving module is electrically connected with the corresponding output end of the control module, the control module outputs a control signal through humidity electric signal comparison to control the motor driving module to work, and the output end of the motor driving module is connected with a fan motor; and the input end of the heating element driving module is electrically connected with the corresponding output end of the control module.

Description

Technical Field

[0001] This utility model relates to the field of humidifier control technology, specifically a control circuit for a waterless mist humidifier. Background Technology

[0002] Humidifiers are a common household appliance, mainly used to increase the humidity of indoor air and improve dry environments. They have many benefits for human health and the indoor environment. Traditional humidifiers mostly use ultrasonic vibration or heating evaporation to produce water mist, thereby increasing air humidity.

[0003] However, ultrasonic humidifiers are prone to producing "white powder" phenomenon, which means that minerals such as calcium and magnesium ions in the water diffuse into the air with the water mist, which not only pollutes the air, but may also irritate the human respiratory tract, thereby reducing human comfort.

[0004] Heated humidifiers consume more energy and cannot be adjusted during the heating process, making them inconvenient to use. Utility Model Content

[0005] This invention provides a waterless mist humidifier control circuit to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A waterless mist humidifier control circuit includes:

[0008] A power module for converting 220V AC mains power into 24V DC power;

[0009] A humidity detection module is used to detect humidity and convert the detected humidity signal into a humidity electrical signal.

[0010] The control module has its power input terminal electrically connected to DC 24V, and its corresponding input terminal electrically connected to the humidity detection module, and is used to receive humidity electrical signals.

[0011] The motor drive module has its input terminal electrically connected to the corresponding output terminal of the control module. The control module controls the motor drive module to work by comparing humidity electrical signals and outputting a control signal. The output terminal of the motor drive module is connected to a fan motor.

[0012] A heating element driving module, wherein the input terminal of the heating element driving module is electrically connected to the corresponding output terminal of the control module, and the output terminal of the heating element driving module is electrically connected to the PCT heating tube.

[0013] As a preferred embodiment of this utility model, the humidity detection module is configured as a humidity sensor from the HI H-4000 series.

[0014] As a preferred embodiment of this utility model, the control module is set as a microcontroller from the STM32 series.

[0015] As a preferred embodiment of this utility model, the motor drive module is configured as one of L298N, L293D or TB6612FNG.

[0016] As a preferred embodiment of this utility model, the heating element driving module is set as a heating element driving module of the STSPI N series.

[0017] As a preferred embodiment of this utility model, the output end of the fan motor is connected to a humidifying impeller.

[0018] As a preferred embodiment of this utility model, the control circuit of the waterless mist humidifier further includes a display module, which is electrically connected to the control module.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] (1) In this utility model, when the humidity detection module detects the ambient humidity, it converts it into a humidity electrical signal and inputs it to the control module. The control module compares and analyzes the received humidity electrical signal with the humidity threshold set inside the control module. Based on the analysis results, when the ambient humidity is low, the control module outputs a signal to increase the speed of the fan motor to accelerate airflow. At the same time, according to the instructions of the control module, the heating element drive module adjusts the heating power of the PCT heating tube to quickly increase the rate of water evaporation, thereby enhancing the humidification effect.

[0021] (2) In this utility model, when the humidity is close to the preset threshold of the control module, the control module will control the fan motor drive module to reduce the fan motor speed. At the same time, according to the instructions of the control module, the heating element drive module will adjust the heating power of the PCT heating tube to reduce the moisture evaporation rate, thereby maintaining a stable humidification amount.

[0022] Therefore, by collecting humidity data, the heating power of the fan motor and PCT heating element can be controlled, thereby reducing energy consumption and improving air comfort. Attached Figure Description

[0023] Figure 1 This is a block diagram illustrating the working principle of the circuit of this utility model. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] For an example, please refer to... Figure 1 This utility model provides a technical solution:

[0026] A waterless mist humidifier control circuit includes:

[0027] Power module 1, which is used to convert 220V AC mains power into 24V DC;

[0028] Humidity detection module 7, which is used to detect humidity and convert the detected humidity signal into a humidity electrical signal;

[0029] The control module 6 has its power input terminal electrically connected to DC 24V, and its corresponding input terminal electrically connected to the humidity detection module 7, and is used to receive humidity electrical signals.

[0030] The motor drive module 22 has its input terminal electrically connected to the corresponding output terminal of the control module 6. The control module 6 controls the motor drive module 2 to work by comparing the humidity electrical signal and outputting a control signal. The output terminal of the motor drive module 2 is connected to the fan motor 3.

[0031] A heating element driving module 8, the input terminal of which is electrically connected to the corresponding output terminal of the control module 6, and the output terminal of which is electrically connected to the PCT heating tube 9;

[0032] When the humidity detection module 7 detects the ambient humidity, it converts it into a humidity electrical signal and inputs it to the control module 6. The control module 6 compares and analyzes the received humidity electrical signal with the humidity threshold set inside the control module 6. Based on the analysis results, when the ambient humidity is low, the control module 6 outputs a signal to increase the speed of the fan motor 3 to accelerate airflow. At the same time, according to the instructions of the control module 6, the heating element drive module 8 adjusts the heating power of the PCT heating tube 9 to quickly increase the moisture evaporation rate, thereby enhancing the humidification effect.

[0033] In this embodiment, as Figure 1 As shown: The humidity detection module 7 is a humidity sensor from the HIH-4000 series.

[0034] In this embodiment, as Figure 1 As shown: The control module 6 is a microcontroller from the STM32 series; it is used to receive the humidity signal from the humidity detection module 7, compare and analyze it with the preset humidity threshold, and output corresponding control signals according to the analysis results to accurately control the working status of the fan motor 3 drive module 2, the heating element drive module 8 and other auxiliary modules.

[0035] Among them, the STM32 series microcontrollers can be STM32F030, STM32F103, STM32F303, etc.

[0036] In this embodiment, as Figure 1 As shown: The motor drive module 2 is configured as L298N, L293D, or TB6612FNG; the output end of the fan motor 3 is connected to the humidifying impeller 4;

[0037] The motor drive module 2 adjusts the speed of the fan motor 3 according to the control signal output by the control module 6. When the ambient humidity is low, the control module 6 outputs a signal to increase the speed of the fan motor 3, accelerate air flow, and enhance the humidification effect. When the humidity is close to the preset value, the speed of the fan motor 3 is reduced to maintain a stable humidification amount and avoid over-humidification. The fan motor 3 drive module 2 adopts PWM (Pulse Width Modulation) technology to achieve precise control of the speed of the fan motor 3, while reducing energy consumption.

[0038] In this embodiment, as Figure 1 As shown: The heating element driving module 8 is a type of heating element driving module 8 in the STSPIN series;

[0039] In this process, the PCT heating element 9 evaporates water into water vapor. The heating element drive module 8 is connected to the control module 6 and the PCT heating element 9, and adjusts the heating power of the PCT heating element 9 according to the instructions of the control module 6. In the initial humidification stage, the heating power is increased to quickly increase the water evaporation rate. As the humidity rises, the heating power is gradually reduced to maintain a stable evaporation rate and ensure the high efficiency and energy saving of the humidification process.

[0040] Among them, the heating element drive module 8 can be ULN2003, TLP250, STG IPM60HC60D, etc.

[0041] In this embodiment, as Figure 1 As shown: The control circuit of the waterless mist humidifier also includes a display module, which is electrically connected to the control module 6;

[0042] The display module is a screen used to display the current ambient humidity, the humidifier's working status (such as running, standby, fault, etc.), and preset humidity values ​​in real time, allowing users to understand the information intuitively. In addition, users can input control commands through operation buttons (or touch panel), such as setting the target humidity, switching working modes (such as normal mode, sleep mode, etc.), and turning the humidifier on or off. This module is connected to the control module 6 to transmit user operation signals to the control module 6, realizing human-machine interaction.

[0043] The beneficial effects and working principle of this utility model are as follows:

[0044] 1. When the humidity detection module 7 detects the ambient humidity, it converts it into a humidity electrical signal and inputs it to the control module 6. The control module 6 compares and analyzes the received humidity electrical signal with the humidity threshold set inside the control module 6.

[0045] 2. Based on the analysis results, when the ambient humidity is low, the control module 6 outputs a signal to increase the speed of the fan motor 3 to accelerate airflow;

[0046] 3. Simultaneously, according to the instructions of the control module 6, the heating element drive module 8 adjusts the heating power of the PCT heating tube 9 to quickly increase the rate of water evaporation, thereby enhancing the humidification effect.

[0047] 4. When the humidity approaches the preset threshold of the control module 6, the control module 6 will control the fan motor 3 drive module 2 to reduce the speed of the fan motor 3.

[0048] 5. At the same time, according to the instructions of the control module 6, the heating element drive module 8 adjusts the heating power of the PCT heating tube 9 to reduce the rate of water evaporation, thereby maintaining a stable humidification.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A control circuit for a waterless mist humidifier, characterized in that: include: A power module for converting 220V AC mains power into 24V DC power; A humidity detection module is used to detect humidity and convert the detected humidity signal into a humidity electrical signal. The control module has its power input terminal electrically connected to DC 24V, and its corresponding input terminal electrically connected to the humidity detection module, and is used to receive humidity electrical signals. The motor drive module has its input terminal electrically connected to the corresponding output terminal of the control module. The control module controls the motor drive module to work by comparing humidity electrical signals and outputting a control signal. The output terminal of the motor drive module is connected to a fan motor. A heating element driving module, wherein the input terminal of the heating element driving module is electrically connected to the corresponding output terminal of the control module, and the output terminal of the heating element driving module is electrically connected to the PCT heating tube.

2. The control circuit for a waterless mist humidifier according to claim 1, characterized in that: The humidity detection module is a humidity sensor from the HIH-4000 series.

3. The control circuit for a waterless mist humidifier according to claim 1, characterized in that: The control module is set to a microcontroller from the STM32 series.

4. The control circuit for a waterless mist humidifier according to claim 1, characterized in that: The motor drive module is set to one of the STSPIN series motor drive modules.

5. The control circuit for a waterless mist humidifier according to claim 1, characterized in that: The heating element driving module is set to one of L298N, L293D or TB6612FNG.

6. The control circuit for a waterless mist humidifier according to claim 1, characterized in that: The output end of the fan motor is connected to the humidifying impeller.

7. The control circuit for a waterless mist humidifier according to claim 1, characterized in that: The control circuit of the waterless mist humidifier also includes a display module, which is electrically connected to the control module.

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