Cooling appliance
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Solution Overview
Problem
Existing cooling appliances face increased wiring complexity and costs due to the need for wires connecting magnetic sensitive sensors to control units, particularly when detecting the open-close state of doors.
Innovation Solution
Incorporating a magnetic conductive element on the second door that can be magnetized by a magnetic element on the first door, allowing the magnetic sensitive element to be placed on the cabinet, eliminating the need for wires on the door and simplifying the detection of door states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magnetic sensitive sensor is directly connected to the control unit via wire, then the door-opening detection function is achieved, but the wiring complexity and installation difficulty increase
Solution Approach 1:
The patent introduces a magnetic conductive element as an intermediary between the magnetic element and the magnetic sensitive sensor. This element transmits the magnetic field from the magnetic element to the sensor, enabling wireless detection while eliminating the need for direct wire connections between the sensor and control unit, thus resolving the wiring complexity issue
2Difficulty of detecting and measuring
If the magnetic sensitive sensor is mounted on the door, then the door state can be directly detected, but the wiring and installation difficulty increase
Solution Approach 1:
The patent divides the detection system into separate functional components: the magnetic element is mounted on one door, the magnetic conductive element on another door, and the magnetic sensitive sensor on the cabinet body. This segmentation allows each component to be independently installed and positioned, significantly reducing installation difficulty compared to mounting the entire sensor assembly on the door
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 configuration reduces wiring difficulties and costs, while maintaining effective door-state detection, even for non-adjacent doors, by using a magnetic conductive element to transmit the magnetic field to the magnetic sensitive element on the cabinet.
Implementation Method 1
a magnetic element disposed on the first door and a magnetic sensitive element disposed on the cabinet; the second door is provided thereon with a first magnetic conductive element capable of being magnetized by the magnetic element
Implementation Method 2
the magnetic sensitive element is capable of producing a door-opening signal based on a magnetic field of the first magnetic conductive element
Data Source
AI summary
A cooling appliance includes a cabinet, first and second doors connected to the cabinet and a door-opening detection device having a magnetic element disposed on the first door and a magnetic sensitive element disposed on the cabinet. A first magnetic conductive element on the second door can be magnetized by the magnetic element. The magnetic sensitive element can produce a door-opening signal based on a magnetic field of the first magnetic conductive element. The magnetic sensitive element produces the door-opening signal when at least one of the doors is open. In this way it can be detected, by using one suite of door-opening detection devices, if any door among multiple doors is in an open state. The structure is simple, and the number of components can be reduced. Moreover, wires are reduced, which lowers manufacturing costs and difficulty.