Control method for heating unit, and refrigerating and freezing apparatus
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Solution Overview
Problem
Electromagnetic wave generation systems in refrigerating and freezing apparatuses generate excessive heat, leading to temperature fluctuations, reduced food preservation quality, and shortened device lifespan due to prolonged high-temperature operation.
Innovation Solution
A control method for the heating unit that adjusts the rotation speed of the cooling fan based on the electromagnetic wave absorption rate and power output, using a preset correspondence relation to optimize cooling efficiency and reduce energy consumption, while also monitoring and controlling the temperature of the electromagnetic wave generation module to prevent overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electromagnetic wave generation module operates at high power, then the heating efficiency is improved, but the heat generation increases causing temperature fluctuation and reducing food preservation quality
Solution Approach 1:
The patent extracts the electromagnetic wave generation module from the main storage compartment by placing it in a separate heating cavity. This physical separation prevents the heat generated during high-power operation from directly affecting the food storage area, thereby maintaining food preservation quality while allowing efficient heating operations.
Solution Approach 2:
The patent introduces a heat dissipation hole as an intermediary structure that allows heat to escape from the heating cavity to the external environment. This mediator enables the high-power electromagnetic wave generation to proceed while the heat is continuously removed through the heat dissipation pathway, preventing temperature buildup that would affect food quality.
2Productivity
If the electromagnetic wave generation module operates continuously, then the heating function is maintained, but the service life is shortened due to prolonged high-temperature state
Solution Approach 1:
The patent implements preliminary cooling action by continuously dissipating heat through the heat dissipation hole even during operation. This proactive heat management prevents the accumulation of excessive heat that would lead to high-temperature damage, thereby extending the service life of the electromagnetic wave generation module while maintaining continuous heating capability.
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 approach enhances the cooling efficiency of the electromagnetic wave generation system, reduces energy consumption, and extends the service life of the device by precisely managing heat dissipation and avoiding unnecessary energy waste and noise pollution.
Implementation Method 1
a cooling fan configured to cool the electromagnetic wave generation module
Implementation Method 2
an electromagnetic wave generation module configured to generate an electromagnetic wave signal
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Provided are a control method for a heating unit (100), the heating unit (100), and a refrigerating and freezing apparatus (200). The control method includes: acquiring a forward power signal output from an electromagnetic wave generation module (120) and a reverse power signal returned to the electromagnetic wave generation module (120) (S702);calculating an electromagnetic wave absorption rate of an item to be treated according to the forward power signal and the reverse power signal (S704); and adjusting a rotation speed of a cooling fan (190) according to a power value of the forward power signal and the electromagnetic wave absorption rate (S706). By comparing the means of adjusting, according to the power value of the forward power signal output from the electromagnetic wave generation module (120) and the electromagnetic wave absorption rate of the item to be treated, the rotation speed of the cooling fan (190) for cooling the electromagnetic wave generation module (120) with the means of adjusting the rotation speed of the cooling fan (190) according to the temperature of the electromagnetic wave generation module (120), there is no need to dispose additional temperature sensing apparatuses, heat generated by the electromagnetic wave generation module (120) can be reflected more precisely, and unexpected energy waste and noise pollution are avoided while fully cooling the electromagnetic wave generation module (120).