refrigerator
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Solution Overview
Problem
Refrigerators with automatic door opening/closing systems lack intelligent response mechanisms to obstacles, leading to potential injuries and damage when doors open or close, especially when encountering people or objects.
Innovation Solution
A refrigerator equipped with an automatic door opening/closing device, first and second obstacle detection devices, and a control system that uses proximity sensing plates and force detection to prevent door movement when obstacles are detected, ensuring safe operation and preventing injuries or damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic door opening/closing device is installed, then door opening operation is automated and ease of operation is improved, but safety hazard increases due to potential pinching of hands or objects
Solution Approach 1:
The obstacle detection device performs preliminary detection before the door opening/closing operation commences. The control unit receives detection signals indicating the presence of obstacles or hands in the door path, and only permits door operation when the detection device confirms the path is clear, thereby preventing pinching injuries before they can occur.
Solution Approach 2:
The obstacle detection device continuously monitors the door path during operation and provides real-time feedback to the control unit. When an obstacle or hand is detected during door movement, the control unit immediately stops the door operation, creating a feedback loop that prevents harmful pinching effects while maintaining automated operation.
2Object-affected harmful factors
If obstacle detection device is added, then safety is improved by preventing pinching injuries, but device complexity increases
Solution Approach 1:
The obstacle detection device serves as an intermediary component between the automatic door opening/closing device and the control unit. It detects obstacles or hands in the door path and transmits detection signals to the control unit, which then controls the motor to stop door operation when obstacles are present, thereby preventing pinching injuries without requiring complex system restructuring.
3Reliability
If magnetic attraction force is used for drawer sealing, then sealing performance is improved, but door opening resistance increases making operation laborious
Solution Approach 1:
The automatic door opening/closing device performs preliminary action by automatically opening the door before the user needs to access the drawer. This eliminates the need for manual door opening against magnetic attraction force, thereby maintaining strong sealing performance while removing the laborious opening operation.
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
The system allows for intelligent control of the door movement, preventing injuries and damage by stopping the door from opening or closing when obstacles are present, ensuring safe and efficient operation without compromising the door's appearance or strength.
Implementation Method 1
the first obstacle detection device includes at least one distance sensing plate. Each distance sensing plate adopts proximity sensing and is arranged between the main body and the panel and in abutting contact with the panel
Implementation Method 2
The second obstacle detection device is a force detection device configured to detect an output force of the automatic door opening/closing device such that the automatic door opening/closing device stops closing the door body when the output force is greater than or equal to a preset value
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A refrigerator, comprising an automatic door-opening/closing apparatus (300) mounted on a refrigerator body (100) for driving the opening and closing of a door (210). When opening the door, if a first obstacle detecting apparatus detects the presence of an obstacle in front of the door (210), then the automatic door opening/closing apparatus (300) stops the opening of the door (210); when closing the door, if a second obstacle detection apparatus detects the presence of an obstacle behind the door (210), then the automatic door-opening/closing apparatus (300) stops the closing of the door (210). This stops the movement of the door (210) upon the discovery of an obstacle while opening or closing the door, thus preventing the door (210) from being damaged by collision, and when the obstacle is a person, preventing physical injuries from being caused.