Commercial Cooking Valve Layout for Fast Pressure Balancing
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Solution Overview
Problem
The existing valve arrangements in commercial cooking devices suffer from high flow resistance, which hinders the efficient release of high pressure and balancing of pressures between the cooking chamber and the atmosphere, especially during dehumidification and low-pressure or vacuum conditions.
Innovation Solution
The valve arrangement features a larger valve disc with an enlarged discharge cross-section, combined with a spring-biased vacuum valve disc and a solenoid-actuated pressure relief valve disc, allowing for improved pressure control and automatic balancing of pressures by optimizing the flow path and using springs to bias the valve discs into their respective positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a small valve disc is used to close the conduit to the cooking chamber, then the valve can be compact and simple, but the flow resistance becomes relatively high
Solution Approach 1:
The valve arrangement is divided into two separate valve discs: a first valve disc for closing the conduit to the cooking chamber and a second valve disc for closing the conduit to the atmosphere. This segmentation allows each valve disc to be optimized for its specific function, with the first valve disc having a larger cross-sectional area to reduce flow resistance while the second valve disc remains compact.
Solution Approach 2:
The two valve discs are arranged in different spatial dimensions within the housing, with the first valve disc positioned to control the conduit to the cooking chamber and the second valve disc positioned to control the conduit to the atmosphere. This dimensional arrangement allows both valves to operate independently without interfering with each other, resolving the contradiction between compactness and flow resistance.
2Device complexity
If a small valve disc is used, then the valve structure remains simple, but the pressure release speed becomes slow
Solution Approach 1:
The pressure release function is segmented between two valve discs with different cross-sectional areas. The first valve disc has a larger cross-sectional area specifically optimized for rapid pressure release to the cooking chamber, while the second valve disc handles atmospheric pressure balancing. This segmentation enables fast pressure release without requiring an overly complex valve structure.
Solution Approach 2:
Each valve disc is given different local qualities in terms of cross-sectional area. The first valve disc has a larger cross-sectional area for high-speed pressure release, while the second valve disc has a smaller cross-sectional area for fine atmospheric pressure control. This local differentiation resolves the contradiction between structural simplicity and pressure release speed.
3Extent of automation
If the valve disc is positioned close to the conduit for automatic opening by pressure, then automatic pressure relief is achieved, but the valve cannot open when low pressure or vacuum exists in the cooking chamber
Solution Approach 1:
The valve arrangement segments the pressure control function into two independent valve discs: the first valve disc for automatic pressure relief during normal operation and the second valve disc for controlled opening during low pressure or vacuum conditions. This segmentation allows each valve to be optimized for its specific operating condition, resolving the contradiction between automatic pressure relief and adaptability to low pressure or vacuum.
Solution Approach 2:
The valve arrangement dynamically adapts to different operating conditions by using two valve discs with different actuation mechanisms. The first valve disc responds automatically to pressure differential, while the second valve disc can be actively controlled to open during low pressure or vacuum conditions. This dynamic behavior enables the system to maintain adaptability across varying pressure conditions while preserving automatic pressure relief capability.
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 flow resistance, enables faster pressure release and balancing, enhances dehumidification, and improves the overall pressure control characteristics, ensuring efficient operation during both high-pressure and low-pressure situations in commercial cooking devices.
Implementation Method 1
A valve arrangement is disclosed which comprises a housing (7) including a first conduit (8) and a second conduit (9). The first conduit (8) connects an interior chamber (22) of the housing (7) to a cooking chamber (15) and the second conduit (9) connects the interior chamber (22) of the housing (7) to the atmosphere (A). A valve seat (23) is disposed within the interior chamber (22) of the housing (7). The valve seat (23) includes a valve seat opening (24) having a discharge cross-section (DCS 24) which is larger than a cross-section of the first conduit (8). A valve disc means (25) is moveably mounted between a closed position in which the valve disc means (25) closes the valve seat opening (24) and an open position in which the valve disc means (25) is disposed away from the valve seat opening (24).
Implementation Method 2
A valve arrangement is disclosed which comprises a housing (7) including a first conduit (8) and a second conduit (9). The first conduit (8) connects an interior chamber (22) of the housing (7) to a cooking chamber (15) and the second conduit (9) connects the interior chamber (22) of the housing (7) to the atmosphere (A).
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
Disclosed is a valve arrangement (20) (20) which includes a housing (7) having a first conduit (8) having a first discharge cross-section (DCS8), a second conduit (9) having a second discharge cross-section (DCS9), and at least one valve seat (23) within the interior chamber (22) of the housing (7) having at least one valve seat opening (24) which cooperates with at least one valve disc (25). The valve disc (25) is moveable between a closed position seated on the valve seat opening (24), and an open position spaced apart from the valve seat opening (24). There can be also provided an actuator (3) for moving the valve disc (25) between the open and closed positions. The valve seat opening (24) has a cross-section (DCS24) that is larger than the discharge cross-section (DCS8) of the first conduit (8) and/or the discharge cross-section (DCS9) of the second conduit (9). The cross-section of the valve disc (25) is greater than the valve seat opening (24).