Piezo Valve Nozzle Positioning for Precise Flow Hole Control
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Solution Overview
Problem
Existing valve devices struggle with effectively opening and closing the flow hole of a nozzle, necessitating improved mechanisms for precise positioning and control.
Innovation Solution
A valve device comprising a nozzle with a flow hole, a support member, a valve element with a piezoelectric element, and a position adjustment mechanism to accurately adjust the nozzle's position relative to the valve element, utilizing a biasing member and stopper mechanism for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a valve element with piezoelectric element is used to open and close the flow hole, then the response speed is improved, but the positioning precision of the nozzle relative to the valve element deteriorates
Solution Approach 1:
The valve device is divided into separate functional modules: the nozzle assembly with flow hole, the valve element with piezoelectric element, and the position adjustment mechanism. This segmentation allows each component to be optimized independently - the piezoelectric element provides fast response while the position adjustment mechanism ensures precise positioning of the nozzle relative to the valve element.
Solution Approach 2:
The position adjustment mechanism acts as an intermediary between the nozzle and valve element, providing precise positional control. This intermediary mechanism compensates for positioning errors and ensures accurate alignment, enabling the fast-responding piezoelectric valve to achieve both speed and precision.
2Device complexity
If the nozzle position is fixed relative to the valve element, then the device complexity is reduced, but the ability to achieve favorable opening and closing of the flow hole deteriorates
Solution Approach 1:
The position adjustment mechanism transforms the static, fixed nozzle position into a dynamic, adjustable position. This allows the nozzle to be precisely positioned relative to the valve element during assembly or operation, ensuring optimal alignment for reliable flow hole opening and closing while maintaining relatively simple device structure.
3Ease of operation
If the piezoelectric element is directly driven without position adjustment, then the ease of operation is improved, but the manufacturing precision of the flow hole opening control deteriorates
Solution Approach 1:
The position adjustment mechanism performs preliminary positioning of the nozzle relative to the valve element before the piezoelectric element is activated. This preliminary action ensures that the flow hole is correctly aligned with the valve element opening, so that when the piezoelectric element is driven, the flow control is precise without requiring complex real-time adjustments during 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
Enables favorable opening and closing of the flow hole by ensuring accurate positioning and control, enhancing the operational efficiency of the valve device.
Implementation Method 1
a valve element including a piezoelectric element and configured to open and close an opening of the flow hole by driving the piezoelectric element
Data Source
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AI summary
A valve device (10) is provided with: a nozzle (66) that has a flow hole (100) through which a fluid flows; a support member (62) that supports the nozzle; a valve body (68) that has a piezoelectric element (116) and opens and closes an opening (102) of the flow hole by driving of the piezoelectric element; and a position adjustment mechanism (76) for adjusting the position of the nozzle with respect to the valve body. The position adjustment mechanism has: an urging member (106) for urging the nozzle toward the valve body; and a stopper member (132) for preventing movement of the nozzle due to the urging member by coming into contact with the nozzle.