Pressure Cooker Handle Control for Precise Side-Operated Venting
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Solution Overview
Problem
Existing pressure cookers face challenges with uncomfortable handling due to the need to bend over the pot to operate the rotary knob, and sliders often require assembly from multiple components, limiting their functionality and precision.
Innovation Solution
A pressure cooker design featuring a rotating shaft with predefined rotational positions, actuated by a handle that protrudes from the side, allowing operation outside the hot area, and utilizing cams and cam followers for precise pressure control, along with a pressure detection device for electronic evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a rotary knob is used for control, then precision of pressure control is improved, but handling comfort deteriorates because the operator must bend over the pot
Solution Approach 1:
The control element is relocated from the top surface of the lid (vertical dimension) to the lateral side of the pressure cooker (horizontal dimension). This spatial repositioning allows the operator to access the rotary knob from the side without bending over the pot, thereby maintaining precision pressure control while significantly improving handling comfort and ergonomics.
2Ease of operation
If a slider is used for control, then ease of operation is improved, but manufacturing precision deteriorates due to assembly play from multiple components
Solution Approach 1:
The control element integrates the rotary knob, cam mechanism, and pressure control functions into a single unified component rather than assembling multiple separate slider components. This merging eliminates the accumulation of assembly plays and tolerances, achieving high manufacturing precision while maintaining ease of operation through the rotary motion interface.
3Ease of operation
If the control element is positioned above the cooking chamber, then operation is convenient, but safety deteriorates due to exposure to hot areas
Solution Approach 1:
The control element is extracted from the hot area above the cooking chamber and repositioned to the lateral side of the pressure cooker, which is thermally isolated from the cooking zone. This spatial separation removes the control interface from the harmful thermal environment, allowing convenient operation without exposing the operator's hands to hot surfaces or steam.
4Adaptability or versatility
If multiple components are assembled to create control functionality, then adaptability is improved, but device complexity increases
Solution Approach 1:
The rotary control element serves multiple functions simultaneously: it adjusts pressure levels through cam profiles, controls steam release timing, and regulates cooking intensity. By integrating these diverse control functions into a single multi-functional rotary mechanism, the system achieves high adaptability for various cooking requirements while minimizing device complexity through functional integration.
Data Source
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AI summary
The invention relates to a pressure cooker with a handle (4) with an operating element, the operating element comprising a rotating shaft (15). The invention also relates to a pressure cooker (1) with an operating element with which the pressure can be released from the pressure cooker through an opening, means being provided with which the pressure can be reduced at at least two predetermined different pressure release rates or at least one predetermined and one up to larger values than the specified value adjustable pressure release rate can be released. The invention also relates to a pressure cooker with an operating element for opening and closing an opening (23) of the pressure cooker, a second operable opening (24) of the pressure cooker (1) being provided, and a pressure cooker with a pressure detection device, the pressure detection device (35) comprising : a mechanical part (45-67) comprising at least one part that moves due to the pressure and an electronic part (66) able to detect the position of the moving part in order to determine the pressure. The invention also relates to a pressure cooker (1) with a timer (113) or with special handles or a U-shaped lock (140).