AC Power Supply Circuit for Stable Radiation Heating in Dryers
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Solution Overview
Problem
Hair dryers using radiation energy sources as heat sources face instability in heat generation due to alternating current with varying electrical parameters, leading to inconsistent light frequency radiation.
Innovation Solution
A power supply circuit structure that includes a main control circuit and signal conduction circuit, generating a control signal with a zero-amplitude portion to adjust the power output to radiation energy sources, ensuring they radiate light within a predetermined frequency range for stable heating and drying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If alternating current with varying electrical parameters is used to power radiation energy sources, then the hair dryer can operate with standard power sources, but the light frequency radiation becomes unstable and heat generation is inconsistent
Solution Approach 1:
The patent introduces a power supply circuit structure as an intermediary between the alternating current power source and the radiation energy sources. This circuit includes a main control circuit and signal conduction circuit that process the alternating current signal to generate a control signal with zero-amplitude portions, which then drives the radiation energy sources. This intermediary resolves the contradiction by adapting the standard alternating current to produce stable frequency radiation from the radiation sources.
Solution Approach 2:
The patent changes the electrical parameters of the power signal by introducing a control signal with zero-amplitude portions. The main control circuit processes the alternating current to create a control signal where the amplitude varies in a controlled manner, with specific portions at zero amplitude. This parameter change ensures that the radiation energy sources receive a modified signal that produces stable frequency radiation, resolving the instability issue while maintaining compatibility with standard power sources.
2Productivity
If the power output to radiation energy sources is increased to improve heating efficiency, then drying speed increases, but the light frequency may deviate from the predetermined frequency range
Solution Approach 1:
The patent implements a feedback mechanism where the main control circuit monitors the output signal and adjusts the control signal accordingly. The control signal is generated based on the predetermined frequency range requirements, and the system continuously ensures that the radiation energy sources operate within this range. This feedback control allows the system to maintain frequency precision while optimizing power output for efficient drying.
Solution Approach 2:
The patent uses a dynamic control signal with variable amplitude portions. The control signal is not static but dynamically adjusted to maintain the radiation frequency within the predetermined range while allowing power output variations. The zero-amplitude portions and variable amplitude structure enable the system to dynamically balance between heating efficiency and frequency precision, optimizing drying performance without compromising frequency stability.
3Device complexity
If a simple rectifier circuit is used to convert alternating current to direct current, then the circuit complexity is reduced, but the radiation energy sources cannot radiate light at the predetermined frequency range
Solution Approach 1:
The patent employs periodic action by using the alternating current's inherent periodicity rather than converting it to direct current. The main control circuit processes the alternating current signal, maintaining its periodic nature, and generates a control signal with zero-amplitude portions that synchronizes with the alternating current frequency. This approach preserves the frequency information needed for precise light radiation while keeping the circuit structure relatively simple, avoiding the need for complex rectifier and frequency conversion circuits.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for precise adjustment of power output to radiation energy sources, ensuring consistent light frequency radiation and effective heating and drying performance.
Implementation Method 1
a main control circuit, configured to receive and detect the alternating current electrical signal, generates a control signal of the same frequency as the alternating current electrical signal based on the predetermined frequency range
Implementation Method 2
a signal conduction circuit, configured to receives the alternating current electrical signal and the control signal, and generates an output signal, wherein the magnitude of the output signal is zero in the zero-amplitude portion of the control signal
Implementation Method 3
the one or more radiation energy sources are capable of radiating light of predetermined frequency range
Data Source
AI summary
A power supply circuit structure (100), a drying device (200), a power supply kit (1000) and a power supply method. The power supply circuit structure (100) is connected to a power supply (300) and supplies power to a radiation source (21), the power supply (300) provides an alternating current signal which changes periodically, the radiation source (21) can radiate light of a preset frequency band, and the power supply circuit structure (100) comprises a main control circuit (11) and a signal conduction circuit (12). The main control circuit (11) receives and detects the alternating current signal and generates a control signal with the same frequency as the alternating current signal according to the preset frequency band, and the control signal comprises a zero-amplitude part. The signal conduction circuit (12) receives the alternating current signal and the control signal and generates an output signal, the amplitude of the output signal is zero at the zero-amplitude part of the control signal, and the amplitude of the output signal corresponds to the amplitude of the alternating current signal at other parts of the control signal; and when the output signal is input, the radiation source (21) is used for radiating light of the preset frequency band.