Float valve motion detection device, pot cover assembly and pressure cooking appliance
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Solution Overview
Problem
The existing float valve motion detection devices in pressure cooking appliances are costly due to the need for magnetically conductive materials and complex processing procedures, which increases production costs and reduces efficiency.
Innovation Solution
The float valve motion detection device uses a valve core made of materials with permeability unequal to that of air, eliminating the need for magnetically conductive materials and simplifying the manufacturing process, while incorporating a detection circuit and prompt device to ensure safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetically conductive materials are fixed on the valve core using grooves and tooling, then the float valve can detect pressure changes, but the production cost increases and production efficiency decreases
Solution Approach 1:
The patent removes the magnetically conductive materials and grooves from the valve core design. Instead of fixing separate magnetic components onto the valve core, the invention uses the valve core itself (made of materials with permeability unequal to air) as the magnetic element that interacts with the hollow inductance coil, thereby eliminating the need for additional magnetically conductive materials and their associated processing steps
Solution Approach 2:
The patent combines the magnetic detection function directly into the valve core structure by using materials with permeability unequal to air. This merges the valve core's mechanical function with its magnetic detection function, eliminating the need for separate magnetically conductive components and their assembly processes
2Ease of manufacture
If grooves are processed on the valve core and magnetically conductive materials are pressed and fixed, then the float valve assembly can be assembled, but the number of processing procedures increases
Solution Approach 1:
The patent extracts and removes the grooves and magnetically conductive materials from the assembly process. The valve core is used in its original form without requiring groove processing or material pressing operations, thereby reducing the number of processing procedures and improving production efficiency
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 reduces production costs, improves efficiency, and enhances safety by providing accurate pressure monitoring and user alerts, thereby gaining a competitive advantage in the market.
Implementation Method 1
the detection circuit converts the change of the inductance into an electric signal
Implementation Method 2
a valve core made of materials having permeability unequal to that of air
Data Source
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Figure 5
AI summary
The present disclosure provides a float valve motion detection device, a pot cover assembly and a pressure cooking appliance, the float valve motion detection device comprising: a float valve, a hollow inductance coil (3) and a detection circuit. A valve core (2) of the float valve is made of materials having permeability unequal to that of air. When the valve core (2) is pushed by the pressure in a pot from a first position to a second position, the volume of the valve core (2) in the hollow inductance coil (3) changes, which changes the inductance of the hollow inductance coil (3). A detection circuit determines the position of the valve core (2) by means of detecting the change in the inductance of the hollow inductance coil (3) so as to determine whether it is safe to uncover at the current time. Changing the structure of the valve core (2) of the float valve and fabricating the valve core (2) using materials having permeability unequal to that of air removes the magnetically conductive materials in an old solution from the valve core, which not only saves on production materials, but also omits the processing procedures for the magnetically conductive materials and the magnetically conductive material mounting part on the valve core (2) as well as the assembling procedures for the magnetically conductive materials and the valve core (2), thereby reducing production costs and improving production efficiency.