Dehumidifier working circuit

Abstract

A working circuit of a dehumidifier relates to the technical field of dehumidifiers, and comprises a control circuit, a load circuit, a sterilization circuit, a voltage source circuit, an overheat protection circuit and an LED circuit, the control end of the control circuit is respectively connected with the controlled ends of the load circuit, the sterilization circuit, the overheat protection circuit and the LED circuit; the sterilization circuit is used for starting and stopping a sterilization assembly, the overheat protection circuit is used for ensuring normal operation of the dehumidifier at a high temperature, the LED circuit is used for displaying a working state, and the control circuit is used for controlling operation of the load circuit, the sterilization circuit, the overheat protection circuit and the LED circuit. According to the embodiment of the utility model, the practicability and the user experience of the equipment are improved, and the safety guarantee during operation is enhanced, so that the product better meets the requirements of modern home furnishing and industrial application.

Description

Technical Field

[0001] This utility model relates to the field of dehumidifier technology, specifically to a dehumidifier working circuit. Background Technology

[0002] Dehumidifiers are widely used in homes, offices, industrial environments, and any place where humidity needs to be controlled to prevent mold growth and maintain air quality. They are especially indispensable in humid seasons and rainy areas to prevent moisture from damaging building structures and furniture, while also helping to improve the comfort of living and working spaces.

[0003] However, existing dehumidifiers lack effective sterilization functions and cannot eliminate bacteria and mold in the air while reducing humidity. This is detrimental to ensuring indoor air quality. Secondly, existing dehumidifiers usually do not have integrated overheat protection mechanisms, which may cause the equipment to overheat during continuous operation, increasing the failure rate and potential safety risks. Utility Model Content

[0004] The purpose of this utility model is to address the deficiencies and shortcomings of existing technologies by providing a dehumidifier operating circuit, including a control circuit, a load circuit, a sterilization circuit, a voltage source circuit, an overheat protection circuit, and an LED circuit. The output terminal of the voltage source circuit is connected to the power supply terminals of the control circuit, load circuit, sterilization circuit, overheat protection circuit, and LED circuit. The control terminal of the control circuit is connected to the controlled terminals of the load circuit, sterilization circuit, overheat protection circuit, and LED circuit. The load circuit drives the dehumidifier load, the sterilization circuit starts and stops the sterilization components, the overheat protection circuit ensures the dehumidifier operates normally at high temperatures, the LED circuit displays the operating status, the control circuit controls the operation of the load circuit, sterilization circuit, overheat protection circuit, and LED circuit, and the voltage source circuit provides the necessary power supply for the dehumidifier operating circuit.

[0005] Furthermore, the sterilization circuit includes inductor L3, inductor L4, diode D7, diode D8, capacitor C8, capacitor C9, integrated circuit U5, integrated circuit U6, resistor R19, resistor R20, array UV lamps UV1, UV2, UV3, and UV4, wherein:

[0006] The fourth port of integrated circuit U5 and the fourth port of integrated circuit U6 are connected to the control circuit. The array UV lamps UV1, UV2, UV3, and UV4 are connected in series. The other end of array UV lamp UV4 is connected to one end of resistors R19 and R20, and the other ends of resistors R19 and R20 are grounded. The other end of array UV lamp UV1 is connected to the cathodes of diodes D7 and D8, one end of capacitor C8, one end of capacitor C9, the fifth port of integrated circuit U5, and the fifth port of integrated circuit U6. The other end of capacitor C8 is connected to the second port of integrated circuit U6. The capacitor C9 is connected to the ground terminal. The other end of the capacitor C9 is connected to the second port of the integrated circuit U5 and the ground terminal. The third port of the integrated circuit U5 is connected between the array UV lamp UV4 and the resistor R20. The third port of the integrated circuit U6 is connected between the array UV lamp UV4 and the resistor R19. The anode of the diode D7 is connected to the first port of the integrated circuit U5 and one end of the inductor L3. The anode of the diode D8 is connected to the first port of the integrated circuit U6 and one end of the inductor L4. The other end of the inductor L3 is connected to the sixth port of the integrated circuit U5 and the control circuit. The other end of the inductor L4 is connected to the sixth port of the integrated circuit U6 and the control circuit.

[0007] Furthermore, the load circuit includes resistors R10 and R11, a switching transistor Q3, a diode D6, and a load interface. One end of resistor R10 is connected to the control circuit, and the other end of resistor R10 is connected to one end of resistor R11 and the base of switching transistor Q3. The other end of resistor R11 is connected to the emitter of switching transistor Q3 and ground. The collector of switching transistor Q3 is connected to the anode of diode D6 and the first port of the load interface, and the cathode of diode D6 is connected to the second port of the load interface and the voltage source circuit.

[0008] Furthermore, the overheat protection circuit includes resistors 12 and 13, a silicon controlled rectifier (SCR) U4, a silicon controlled rectifier (SCR) TR1, and a sensor interface. One end of resistor 12 is connected to the control circuit, and the other end of resistor 12 is connected to the first port of the SCR U4. The second port of the SCR U4 is grounded. The sixth port of the SCR U4 is connected to one end of resistor R13, and the other end of resistor R13 is connected to the third port of the SCR TR1. The first port of the SCR TR1 is connected to the neutral wire, and the second port of the SCR TR1 is connected to the first port of the sensor interface and the fourth port of the SCR U4. The third port of the sensor interface is connected to the live wire.

[0009] Furthermore, the voltage source circuit includes an input protection module, a rectification module, a control module, a first output module of the voltage regulation module, and a second output module, which are connected sequentially.

[0010] Furthermore, the control circuit also includes a switch module and a start module. The switch module is used to turn the power supply on and off to the dehumidifier's operating circuit, and the start module is used to turn the dehumidifier's operating circuit on and off.

[0011] Furthermore, the LED circuit includes a first switching circuit and a second switching circuit. The first switching circuit is used to control the on / off state of indicator LED1 when a DC signal is input to the control circuit, and the second switching circuit is used to control the on / off state of LED2 when an AC signal is input to the control circuit.

[0012] Furthermore, the first switching circuit includes a resistor R1, a switching transistor Q1, an indicator LED1, an indicator LED2, and a diode D1. One end of the resistor R1 is connected to the second switching circuit and the emitter of the switching transistor Q1. The other end of the resistor R1 is connected to the anode of the indicator LED1, the anode of the indicator LED2, the output terminal of the voltage source circuit, the base of the switching transistor Q1, and the anode of the diode D1. The cathode of the indicator LED1 is connected to the collector of the switching transistor Q1, and the cathode of the indicator LED2 is connected to the cathode of the diode D1 and the second switching circuit.

[0013] Furthermore, the second switching circuit includes resistors R3, R4, and R5, a switching transistor Q2, diodes D2 and D3, a capacitor C1, and a capacitor EC1. One end of resistor R5 is connected to the emitter of the switching transistor Q1, and the other end of resistor R5 is connected to one end of capacitor C1. The other end of capacitor C1 is connected to the anode of diode D2 and the cathode of diode D3. The cathode of diode D2 is connected to one end of capacitor EC1, one end of resistor R3, and one end of resistor R4. The anode of diode D3 is connected to the other end of capacitor EC1, the other end of resistor R4, the emitter of switching transistor Q2, and the ground terminal. Resistor R3 is connected to the base of switching transistor Q2, and the collector of switching transistor Q2 is connected to the cathode of diode D1.

[0014] On the other hand, this utility model also provides a dehumidifier, including a dehumidifier working circuit as described above.

[0015] This utility model embodiment can adjust various functions of the dehumidifier, including sterilization and overheat protection, ensuring that the device can effectively kill bacteria and mold in the air while removing indoor moisture, thus improving indoor air quality. At the same time, the addition of the overheat protection circuit prevents overheating problems caused by prolonged operation, greatly reducing safety risks. The LED circuit design allows users to intuitively understand the device's operating status and any necessary maintenance prompts, increasing ease of use. It not only improves the device's practicality and user experience but also enhances operational safety, making the product more suitable for the needs of modern home and industrial applications. Attached Figure Description

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 This is a structural block diagram of the first embodiment of the present utility model;

[0018] Figure 2 This is a circuit diagram of the control circuit in the second embodiment of this utility model;

[0019] Figure 3 This is a circuit diagram of the load circuit in the second embodiment of this utility model;

[0020] Figure 4 This is a circuit diagram of the sterilization circuit in the second embodiment of this utility model;

[0021] Figure 5 This is a circuit diagram of the voltage source circuit in the second embodiment of this utility model;

[0022] Figure 6 This is a circuit diagram of the overheat protection circuit in the second embodiment of this utility model;

[0023] Figure 7 This is a circuit diagram of the LED circuit in the second embodiment of this utility model;

[0024] Figure 8 This is a circuit diagram of the switch module and the start-up module in the second embodiment of this utility model.

[0025] Figure label:

[0026] 100. Control circuit; 200. Load circuit; 300. Sterilization circuit; 400. Voltage source circuit; 410. Protection module; 420. Rectifier module; 430. Control module; 440. Voltage regulator module; 450. First output module; 460. Second output module; 500. Overheat protection circuit; 600. LED circuit. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to indicate that selected embodiments of the present invention are based on the embodiments of the present invention, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0031] First embodiment:

[0032] Reference Figure 1This utility model provides a dehumidifier operating circuit, including a control circuit 100, a load circuit 200, a sterilization circuit 300, a voltage source circuit 400, an overheat protection circuit 500, and an LED circuit 600. The output terminal of the voltage source circuit 400 is connected to the power supply terminals of the control circuit 100, the load circuit 200, the sterilization circuit 300, the overheat protection circuit 500, and the LED circuit 600. The control terminal of the control circuit 100 is connected to the load circuit 200, the sterilization circuit 300, and the overheat protection circuit 500, respectively. The system includes a controlled terminal for the LED circuit 600, a load circuit 200 for driving the dehumidifier load, a sterilization circuit 300 for starting and stopping the sterilization components, an overheat protection circuit 500 for ensuring the dehumidifier operates normally at high temperatures, an LED circuit 600 for displaying the operating status, a control circuit 100 for controlling the operation of the load circuit 200, the sterilization circuit 300, the overheat protection circuit 500, and the LED circuit 600, and a voltage source circuit 400 for providing the necessary power to the dehumidifier's operating circuit.

[0033] This utility model embodiment can adjust various functions of the dehumidifier, including sterilization and overheat protection, ensuring that the device can effectively kill bacteria and mold in the air while removing indoor moisture, thus improving indoor air quality. At the same time, the addition of the overheat protection circuit prevents overheating problems caused by prolonged operation, greatly reducing safety risks. The LED circuit design allows users to intuitively understand the device's operating status and any necessary maintenance prompts, increasing ease of use. It not only improves the device's practicality and user experience but also enhances operational safety, making the product more suitable for the needs of modern home and industrial applications.

[0034] Second embodiment:

[0035] Reference Figure 2-8 Optionally, the sterilization circuit 300 includes inductor L3, inductor L4, diode D7, diode D8, capacitor C8, capacitor C9, integrated circuit U5, integrated circuit U6, resistor R19, resistor R20, array of ultraviolet lamps UV1, UV2, UV3, and UV4, wherein:

[0036] The fourth ports of integrated circuit U5 and integrated circuit U6 are connected to the control circuit 100. The array UV lamps UV1, UV2, UV3, and UV4 are connected in series. One end of array UV lamp UV4 is connected to one end of resistors R19 and R20, and the other ends of resistors R19 and R20 are grounded. The other end of array UV lamp UV1 is connected to the cathodes of diodes D7 and D8, one end of capacitor C8, one end of capacitor C9, the fifth port of integrated circuit U5, and the fifth port of integrated circuit U6. The other end of capacitor C8 is connected to the second port of integrated circuit U6 and grounded. One end of capacitor C9 is connected to the second port of integrated circuit U5 and the ground terminal. The third port of integrated circuit U5 is connected between array UV lamp UV4 and resistor R20. The third port of integrated circuit U6 is connected between array UV lamp UV4 and resistor R19. The anode of diode D7 is connected to the first port of integrated circuit U5 and one end of inductor L3. The anode of diode D8 is connected to the first port of integrated circuit U6 and one end of inductor L4. The other end of inductor L3 is connected to the sixth port of integrated circuit U5 and control circuit 100. The other end of inductor L4 is connected to the sixth port of integrated circuit U6 and control circuit 100.

[0037] The core of this embodiment is to control the working state of the array of ultraviolet lamps UV1 to UV4 through integrated circuits U5 and U6. Specifically, inductors L3 and L4 are connected to the sixth port of integrated circuits U5 and U6 respectively, responsible for energy transmission and connected to the control circuit 100 to obtain the required signals and power from the control circuit 100. The inductors transmit the input signals to diodes D7 and D8 after filtering and rectification. The anode of diode D7 is connected to the first port of integrated circuit U5, and the anode of diode D8 is connected to the first port of integrated circuit U6, forming a rectifier circuit to ensure the directionality of the current and transmit the rectified current to the internal circuits of U5 and U6.

[0038] Specifically, capacitors C8 and C9 are connected to the second port of U5 and U6 and the ground terminal, respectively, for filtering and voltage regulation to ensure stable voltage signals in the circuit and prevent interference and noise from affecting the normal operation of the circuit. The array of ultraviolet lamps UV1 to UV4 are connected in series to form a unified ultraviolet lamp working circuit. The other end of UV1 is connected to the cathode of diodes D7 and D8 and one terminal of capacitors C8 and C9 to ensure that the lamp array can work stably in the rectified current. The other end of UV4 is connected to ground through resistors R19 and R20 to form a current loop. Resistors R19 and R20 play a current limiting role in the circuit to prevent excessive current from damaging the ultraviolet lamps or affecting their working stability.

[0039] Specifically, the third port of integrated circuit U5 is connected between the array UV lamp UV4 and resistor R20, and the third port of integrated circuit U6 is connected between UV4 and resistor R19. These functions monitor and control the status of the UV lamps, ensuring the stability of the current and the normal operation of the UV lamps. The fourth ports of U5 and U6 are connected to the control circuit 100 to receive external control signals. U5 and U6 control the opening and closing of the UV lamps accordingly. Through the control signals, U5 and U6 can adjust the brightness and running time of the UV lamps, achieving precise control over the UV sterilization effect.

[0040] Specifically, the model numbers of integrated circuits U5 and U6 are RY3730, and the model numbers of diodes D7 and D8 are DSK34.

[0041] This embodiment achieves efficient and stable ultraviolet sterilization by connecting a series ultraviolet lamp array and precisely controlling the current and voltage, resulting in energy savings and extending the lifespan of the ultraviolet lamps.

[0042] Optionally, the load circuit 200 includes a resistor R10, a resistor R11, a switching transistor Q3, a diode D6, and a load interface. One end of the resistor R10 is connected to the control circuit 100, and the other end of the resistor R10 is connected to one end of the resistor R11 and the base of the switching transistor Q3. The other end of the resistor R11 is connected to the emitter of the switching transistor Q3 and the ground terminal. The collector of the switching transistor Q3 is connected to the anode of the diode D6 and the first port of the load interface, and the cathode of the diode D6 is connected to the second port of the load interface and the voltage source circuit 400.

[0043] In this embodiment, the switching transistor Q3 controls the on / off state of the load. Resistor R10 is connected to the control circuit 100 and transmits the control signal to the base of the switching transistor Q3. At the same time, R11 connects the emitter of Q3 to the ground terminal, forming a current path to stabilize the base current. The collector of Q3 is connected to the anode of diode D6 and the first terminal of the load interface. The cathode of diode D6 is connected to the second terminal of the load interface and the voltage source circuit 400. The control circuit 100 controls the switching state of Q3 by adjusting the base current of Q3, thereby controlling the current on / off state of the load interface. Diode D6 is used to prevent reverse current from damaging the circuit and protect the load.

[0044] This embodiment can respond quickly to control signals and flexibly control the switching of the load. The circuit design is simple and efficient. Diode D6 provides reverse current protection, ensuring the stability and safety of the load circuit and extending the equipment life.

[0045] Optionally, the overheat protection circuit 500 includes resistors 12 and 13, a silicon controlled rectifier (SCR) U4, a silicon controlled rectifier (SCR) TR1, and a sensor interface. One end of resistor 12 is connected to the control circuit 100, and the other end of resistor 12 is connected to the first port of the SCR U4. The second port of the SCR U4 is grounded. The sixth port of the SCR U4 is connected to one end of resistor R13, and the other end of resistor R13 is connected to the third port of the SCR TR1. The first port of the SCR TR1 is connected to the neutral wire, and the second port of the SCR TR1 is connected to the first port of the sensor interface and the fourth port of the SCR U4. The third port of the sensor interface is connected to the live wire.

[0046] In this embodiment, the thyristor U4 and TR1 work in conjunction with the sensor interface to detect and prevent overheating of the equipment. Specifically, resistor R12 is connected to the control circuit 100, transmitting the signal to the first port of U4. The second port of U4 is grounded for control signal transmission. The sixth port of U4 is connected to resistor R13, and the other end of R13 is connected to the third port of TR1, forming a control loop. The first port of TR1 is connected to the neutral wire, the second port is connected to the first terminal of the sensor interface and the fourth terminal of U4, and the third terminal of the sensor interface is connected to the live wire. When the sensor detects overheating, it controls the thyristor U4 and TR1 to cut off the circuit, thereby protecting the equipment.

[0047] This embodiment uses sensors to monitor temperature in real time and utilizes silicon controlled rectifiers (SCRs) to achieve rapid overheat protection, effectively preventing equipment damage due to overheating. The circuit structure is simple and the response is sensitive, ensuring safe operation of the equipment under high-temperature conditions, extending the equipment's service life, and improving overall stability.

[0048] Optionally, the voltage source circuit 400 includes an input protection module 410, a rectification module 420, a control module 430, a voltage regulator module 440, a first output module 450, and a second output module 460, which are connected sequentially.

[0049] This embodiment utilizes an input protection module 410, a rectifier module 420, a control module 430, a voltage regulator module 440, a first output module 450, and a second output module 460. The input protection module 410 is used to prevent abnormal input voltage conditions and protect subsequent circuits. The rectifier module 420 converts the input AC power into DC power. The control module 430 is responsible for managing the power supply's on / off state and stabilizing the output. The voltage regulator module 440 adjusts the unstable DC voltage into a stable output voltage. Finally, the first output module 450 and the second output module 460 output different voltages to power different loads.

[0050] Specifically, the protection module 410 includes an input fuse F1, a transient suppression diode ZDR1, a filter capacitor CX1, and resistors RX1 and RX2.

[0051] Specifically, the input fuse F1 is first connected to the power input terminal to prevent overcurrent. The transient suppression diode ZDR1 is connected in parallel with the power input to absorb high-voltage transient pulses on the power line. The filter capacitor CX1 is connected in parallel in the circuit to eliminate high-frequency noise in the power input. Resistors RX1 and RX2 are connected in series on the input power line to limit current and attenuate noise.

[0052] Specifically, the rectifier module 420 includes a bridge rectifier DB1 and capacitors EC2 and EC3.

[0053] Specifically, the input terminal of the bridge rectifier DB1 is connected to the AC power supply, and the output terminal is connected to capacitors EC2 and EC3. The capacitors are connected in parallel at the output terminal of the rectifier and are responsible for smoothing the DC power after rectification, providing a more stable DC voltage to the next stage circuit.

[0054] Specifically, the control module 430 includes a switch controller U1 (model BPA8506D SOP7), an inductor L1, and feedback circuit components.

[0055] Specifically, the input terminal of the switch controller U1 is connected to the output DC voltage of the rectifier module 420. The controller U1 adjusts the stability of the output voltage according to the voltage feedback signal provided by the feedback circuit element. The inductor L1 is connected to the output terminal of U1 and is used for energy storage and voltage conversion to help efficiently convert the input DC voltage into the required stable output voltage.

[0056] Specifically, the voltage regulator module 440 includes diodes D4 and D5, capacitors EC4 and EC5, and inductor L2.

[0057] Specifically, diodes D4 and D5 are connected to the voltage input terminal for rectification or freewheeling. Capacitors EC4 and EC5 are connected in parallel in the circuit for filtering, eliminating noise and fluctuations in the voltage. Inductor L2 is connected in series in the output circuit, forming an LC filter network with the capacitors to further smooth the output voltage and ensure voltage stability.

[0058] Specifically, the first output module 450 is used to output 12V power, and the second output module 460 is used to output 5V power.

[0059] Specifically, the input protection module 410 protects the circuit through fuse F1 and transient suppression diode ZDR1, and performs preliminary filtering through resistors and filter capacitors. The rectifier module 420 rectifies the AC power into DC power through bridge rectifier DB1, and smooths the output voltage through capacitors EC2 and EC3. Next, the switch controller U1 in the control module 430, together with inductor L1 and feedback circuit, adjusts and maintains the stability of the output voltage. The voltage regulator module 440 uses diodes D4 and D5 and capacitors EC4 and EC5 to further filter and regulate the voltage. Inductor L2 further smooths the output voltage to ensure stable voltage and no noise. Finally, the fixed output voltage regulator module 450 stabilizes the voltage at 5V through voltage regulator U3 to provide stable power supply for subsequent circuits.

[0060] This embodiment achieves multi-voltage output through modular design to meet different load requirements, while providing input protection and stable power management, effectively improving the system's reliability and anti-interference capability.

[0061] Optionally, the control circuit 100 further includes a switch module and a start module. The switch module is used to turn the power supply on and off to the dehumidifier's operating circuit, and the start module is used to turn the dehumidifier's operating circuit on and off.

[0062] This embodiment achieves precise control of the dehumidifier by adding a switch module and a start module: the switch module controls the power supply to the dehumidifier's working circuit, ensuring effective energy saving when the equipment is not in operation, while preventing unnecessary power consumption; the start module controls the dehumidifier's operating status, and can flexibly start or stop the equipment operation according to the ambient humidity and user needs, which not only improves the user's operational convenience, but also extends the equipment's service life, reduces unnecessary power consumption, and improves the overall system efficiency and safety.

[0063] Optionally, the LED circuit 600 includes a first switching circuit and a second switching circuit. The first switching circuit is used to control the on / off state of indicator LED1 when a DC signal is input to the control circuit 100, and the second switching circuit is used to control the on / off state of LED2 when an AC signal is input to the control circuit 100.

[0064] This embodiment achieves independent control of LED1 and LED2 through a first switching circuit and a second switching circuit: the first switching circuit can control the on / off state of indicator LED1 when a DC signal is input to the control circuit 100, ensuring its stable operation in a DC working environment, while the second switching circuit is used to control the on / off state of LED2 under AC signal conditions, making it adaptable to different power supply environments. This design in this embodiment enhances the flexibility of the LED circuit, enabling it to cope with different power input conditions, while ensuring the efficient operation of each LED, improving the reliability and compatibility of the system, and meeting diverse usage needs.

[0065] Optionally, the first switching circuit includes a resistor R1, a switching transistor Q1, an indicator LED1, an indicator LED2, and a diode D1. One end of the resistor R1 is connected to the second switching circuit and the emitter of the switching transistor Q1. The other end of the resistor R1 is connected to the anode of the indicator LED1, the anode of the indicator LED2, the output terminal of the voltage source circuit 400, the base of the switching transistor Q1, and the anode of the diode D1. The cathode of the indicator LED1 is connected to the collector of the switching transistor Q1, and the cathode of the indicator LED2 is connected to the cathode of the diode D1 and the second switching circuit.

[0066] In this embodiment, the first switching circuit controls the on / off state of LED1 and LED2. Resistor R1 is connected to the second switching circuit and the emitter of switching transistor Q1, with one end connected to the anodes of LED1 and LED2, the base of Q1, and the anode of diode D1, forming a current path. When a DC signal is input, Q1 conducts, and current flows from the anode to the cathode of LED1, lighting LED1. At the same time, diode D1 prevents current from flowing to LED2, ensuring that only LED1 is lit. If an AC signal is input, the second switching circuit is activated, and current flows through D1 and LED2, lighting LED2, while Q1 controls LED1 to remain off, thus controlling LED2.

[0067] This embodiment uses the cooperation of diodes and switching transistors to ensure that the corresponding indicator lights are lit under DC and AC signals respectively, avoiding mutual interference. This not only improves the flexibility and adaptability of the circuit, enabling it to adapt to different working environments and ensuring the correct display status of the indicator lights, but also features a simple design, saves circuit space, and enhances system reliability.

[0068] Optionally, the second switching circuit includes resistors R3, R4, and R5, a switching transistor Q2, diodes D2 and D3, a capacitor C1, and a capacitor EC1. One end of resistor R5 is connected to the emitter of the switching transistor Q1, and the other end of resistor R5 is connected to one end of capacitor C1. The other end of capacitor C1 is connected to the anode of diode D2 and the cathode of diode D3. The cathode of diode D2 is connected to one end of capacitor EC1, one end of resistor R3, and one end of resistor R4. The anode of diode D3 is connected to the other end of capacitor EC1, the other end of resistor R4, the emitter of switching transistor Q2, and the ground terminal. Resistor R3 is connected to the base of switching transistor Q2, and the collector of switching transistor Q2 is connected to the cathode of diode D1.

[0069] This embodiment achieves circuit control through the synergistic effect of resistors, capacitors, diodes, and switching transistor Q2. Specifically, resistor R5 is connected to the emitter of switching transistor Q1 and capacitor C1. The other end of capacitor C1 is connected to the anode of diode D2 and the cathode of diode D3, forming a signal transmission path. The cathode of diode D2 is connected to capacitor EC1, resistors R3 and R4. The anode of diode D3 is connected to capacitor EC1, resistor R4, and the emitter of switching transistor Q2. The base of Q2 is connected to the circuit through resistor R3. When an AC signal is input, capacitors C1 and EC1 store energy, driving switching transistor Q2 to conduct. Current flows through the collector of Q2 to the cathode of diode D1, thus controlling the subsequent circuit (LED2). When Q2 is on, LED2 is activated, while Q1 is off, preventing LED1 from lighting up.

[0070] This embodiment uses a combination of diodes, resistors, and switching transistors to efficiently control the on / off state of LED2 under AC signals, while ensuring that LED1 remains off under AC signals, thus avoiding control conflicts under different signals.

[0071] Furthermore, the energy storage design of the capacitor enhances the circuit's stability, enabling LED2 to respond smoothly to AC signals. This design strengthens the circuit's signal processing capabilities, improves the system's adaptability and stability, makes it suitable for various operating environments, and enhances control accuracy.

[0072] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A dehumidifier operating circuit, characterized in that, The circuit includes a control circuit (100), a load circuit (200), a sterilization circuit (300), a voltage source circuit (400), an overheat protection circuit (500), and an LED circuit (600). The output terminal of the voltage source circuit (400) is connected to the power supply terminals of the control circuit (100), the load circuit (200), the sterilization circuit (300), the overheat protection circuit (500), and the LED circuit (600). The control terminal of the control circuit (100) is connected to the load circuit (200), the sterilization circuit (300), the overheat protection circuit (500), and the LED circuit (600), respectively. The controlled terminal of circuit D (600) includes the load circuit (200) for driving the dehumidifier load, the sterilization circuit (300) for starting and stopping the sterilization components, the overheat protection circuit (500) for ensuring the dehumidifier operates normally at high temperatures, the LED circuit (600) for displaying the working status, the control circuit (100) for controlling the operation of the load circuit (200), the sterilization circuit (300), the overheat protection circuit (500), and the LED circuit (600), and the voltage source circuit (400) for providing the required power supply to the dehumidifier operating circuit.

2. The dehumidifier operating circuit according to claim 1, characterized in that, The sterilization circuit (300) includes inductor L3, inductor L4, diode D7, diode D8, capacitor C8, capacitor C9, integrated circuit U5, integrated circuit U6, resistor R19, resistor R20, array UV lamps UV1, UV2, UV3, and UV4, wherein: The fourth port of integrated circuit U5 and the fourth port of integrated circuit U6 are connected to the control circuit (100). The array ultraviolet lamps UV1, UV2, UV3, and UV4 are connected in series. The other end of the array ultraviolet lamp UV4 is connected to one end of resistor R19 and resistor R20, and the other end of resistor R19 and resistor R20 is grounded. The other end of the array ultraviolet lamp UV1 is connected to the cathode of diode D7, the cathode of diode D8, one end of capacitor C8, one end of capacitor C9, the fifth port of integrated circuit U5, and the fifth port of integrated circuit U6. The other end of capacitor C8 is connected to the second port of integrated circuit U6 and the ground terminal. The other end of capacitor C9 is connected to the second port of integrated circuit U5 and the ground terminal. The third port of integrated circuit U5 is connected between array UV lamp UV4 and resistor R20. The third port of integrated circuit U6 is connected between array UV lamp UV4 and resistor R19. The anode of diode D7 is connected to the first port of integrated circuit U5 and one end of inductor L3. The anode of diode D8 is connected to the first port of integrated circuit U6 and one end of inductor L4. The other end of inductor L3 is connected to the sixth port of integrated circuit U5 and control circuit (100). The other end of inductor L4 is connected to the sixth port of integrated circuit U6 and control circuit (100).

3. The dehumidifier operating circuit according to claim 1, characterized in that, The load circuit (200) includes resistor R10, resistor R11, switching transistor Q3, diode D6, and load interface. One end of resistor R10 is connected to the control circuit (100), and the other end of resistor R10 is connected to one end of resistor R11 and the base of switching transistor Q3. The other end of resistor R11 is connected to the emitter of switching transistor Q3 and the ground terminal. The collector of switching transistor Q3 is connected to the anode of diode D6 and the first port of the load interface. The cathode of diode D6 is connected to the second port of the load interface and the voltage source circuit (400).

4. The dehumidifier operating circuit according to claim 1, characterized in that, The overheat protection circuit (500) includes resistors R12 and R13, a silicon controlled rectifier (SCR) U4, a silicon controlled rectifier (SCR) TR1, and a sensor interface. One end of resistor R12 is connected to the control circuit (100), and the other end of resistor R12 is connected to the first port of SCR U4. The second port of SCR U4 is grounded. The sixth port of SCR U4 is connected to one end of resistor R13, and the other end of resistor R13 is connected to the third port of SCR TR1. The first port of SCR TR1 is connected to the neutral wire, and the second port of SCR TR1 is connected to the first port of the sensor interface and the fourth port of SCR U4. The third port of the sensor interface is connected to the live wire.

5. The dehumidifier operating circuit according to claim 1, characterized in that, The voltage source circuit (400) includes an input protection module (410), a rectifier module (420), a control module (430), a voltage regulator module (440), a first output module (450), and a second output module (460), which are connected in sequence.

6. The dehumidifier operating circuit according to claim 1, characterized in that, The control circuit (100) further includes a switch module and a start module. The switch module is used to turn on and off the power supply to the dehumidifier's working circuit, and the start module is used to turn on and off the operation of the dehumidifier's working circuit.

7. The dehumidifier operating circuit according to claim 1, characterized in that, The LED circuit (600) includes a first switching circuit and a second switching circuit. The first switching circuit includes indicator LED1 and indicator LED2. The first switching circuit is used to control the on / off state of indicator LED1 when a DC signal is input to the control circuit (100). The second switching circuit is used to control the on / off state of indicator LED2 when an AC signal is input to the control circuit (100).

8. The dehumidifier operating circuit according to claim 7, characterized in that, The first switching circuit also includes a resistor R1, a switching transistor Q1, and a diode D1. One end of the resistor R1 is connected to the second switching circuit and the emitter of the switching transistor Q1. The other end of the resistor R1 is connected to the anode of the indicator LED1, the anode of the indicator LED2, the output terminal of the voltage source circuit (400), the base of the switching transistor Q1, and the anode of the diode D1. The cathode of the indicator LED1 is connected to the collector of the switching transistor Q1, and the cathode of the indicator LED2 is connected to the cathode of the diode D1 and the second switching circuit.

9. A dehumidifier operating circuit according to claim 8, characterized in that, The second switching circuit includes resistors R3, R4, and R5, a switching transistor Q2, diodes D2 and D3, capacitor C1, and capacitor EC1. One end of resistor R5 is connected to the emitter of the switching transistor Q1, and the other end of resistor R5 is connected to one end of capacitor C1. The other end of capacitor C1 is connected to the anode of diode D2 and the cathode of diode D3. The cathode of diode D2 is connected to one end of capacitor EC1, one end of resistor R3, and one end of resistor R4. The anode of diode D3 is connected to the other end of capacitor EC1, the other end of resistor R4, the emitter of switching transistor Q2, and the ground terminal. Resistor R3 is connected to the base of switching transistor Q2, and the collector of switching transistor Q2 is connected to the cathode of diode D1.

10. A dehumidifier, characterized in that, Includes a dehumidifier operating circuit as described in any one of claims 1-9.

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