Cooking appliance, and heating control method and apparatus therefor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cooking appliances face challenges in effectively controlling heating due to abnormal temperature sensors, leading to continuous heating and potential fire risks.
Innovation Solution
A heating control method and apparatus that monitor the heating time period and changed values of target parameters like temperature and pressure within preset time periods, adjusting the heating device accordingly to prevent continuous heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a temperature sensor is used to detect temperature in the cooking chamber, then heating control is achieved, but continuous heating occurs when the sensor is abnormal
Solution Approach 1:
The patent implements a feedback mechanism by monitoring the changed value of target parameters (temperature, pressure) during heating and comparing it against expected ranges. The control unit adjusts heating based on this feedback, stopping heating when the changed value indicates abnormal conditions, thus preventing continuous heating even when sensors are abnormal.
Solution Approach 2:
The patent introduces an intermediary control unit that acts between the temperature sensor and the heating device. This control unit processes the sensor data, calculates changed values, and makes decisions about heating control, providing an additional layer of safety that prevents direct reliance on potentially abnormal sensor readings.
2Temperature
If heating control is based on temperature sensor readings, then cooking temperature is maintained, but fire risk increases when sensor fails
Solution Approach 1:
The system continuously monitors temperature changes during heating and compares the actual changed value against expected ranges. When the changed value falls outside the expected range, the control unit stops heating, providing feedback-based safety control that prevents fire risks while maintaining proper temperature control during normal operation.
Solution Approach 2:
The patent applies preliminary anti-action by implementing safety checks before continuing heating. The control unit calculates the changed value of target parameters and determines whether to continue or stop heating based on whether this changed value falls within expected ranges, preventing harmful outcomes before they occur.
3Measurement precision
If multiple conditional tests are performed to detect sensor abnormalities, then detection accuracy improves, but system complexity increases
Solution Approach 1:
The patent uses feedback by monitoring the changed value of target parameters during heating and comparing it against expected ranges. This single feedback mechanism provides effective detection of sensor abnormalities without requiring multiple complex conditional tests, maintaining detection accuracy while limiting system complexity.
Solution Approach 2:
The patent focuses on monitoring changes in target parameters (temperature, pressure) during heating rather than implementing multiple complex tests. By calculating the changed value of these parameters and comparing against expected ranges, the system achieves effective sensor abnormality detection through parameter change analysis rather than multiple conditional tests.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention discloses a heating control method and apparatus for a cooking appliance. The heating control method includes controlling a heating device to start heating the cooking appliance; identifying that a heating time period of the heating device is greater than or equal to a first preset time period; acquiring a first changed value of a target parameter of the cooking appliance within the heating time period; and controlling the heating device based on the first changed value. The heating control method can control the heating device based on the changed value of the target parameter of the cooking appliance within a certain heating time period in the process of heating the cooking appliance by the heating device, such that the changed value of the target parameter is closely related to the control of the heating device, thereby achieving effective control of heating the cooking appliance, thus avoiding the cooking appliance from the continuous heating which may be at a risk of causing a fire.