Throttling Structure for Fluid Pressure Devices
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Solution Overview
Problem
Fluid pressure devices face challenges in reducing pressure fluid consumption while preventing clogging, as existing throttling mechanisms either increase energy costs or risk clogging due to reduced flow passages.
Innovation Solution
A throttling structure with a plurality of flow passages of smaller diameter than the communication passage, arranged adjacent to each other, reduces pressure fluid flow while minimizing the risk of clogging by allowing stepwise reduction in flow area, using orifice plates or throttle holes within the nozzle passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the diameter of the flow passage is reduced to decrease pressure fluid consumption, then energy consumption is reduced, but the flow passage becomes prone to clogging
Solution Approach 1:
The single flow passage is segmented into multiple flow passages (first, second, third flow passages) with different diameter sizes. This segmentation allows the system to reduce overall fluid consumption through multiple smaller channels while preventing clogging by providing alternative pathways - if one passage becomes clogged, fluid can still flow through other passages of different diameters.
2Quantity of substance
If a single small-diameter flow passage is used to reduce fluid consumption, then pressure fluid flow amount is reduced, but the passage is more susceptible to clogging
Solution Approach 1:
The flow passage system is divided into multiple passages with different diameters arranged in parallel. This allows the total flow quantity to be reduced by using multiple smaller passages instead of one large passage, while simultaneously improving reliability by providing multiple pathways that can handle clogging events independently.
Solution Approach 2:
Different portions of the flow passage system have different local qualities - specifically, different diameter sizes. The first, second, and third flow passages have progressively different diameters, allowing each local region to contribute differently to overall fluid control and clogging resistance based on its specific diameter characteristic.
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 design effectively reduces pressure fluid consumption, promotes energy savings, and extends maintenance cycles by minimizing clogging risks, enhancing the maintainability of fluid pressure devices.
Implementation Method 1
a communication passage that provides communication between the introduction chamber and the port, and a throttling mechanism disposed in the communication passage
Data Source
AI summary
The present invention relates to a throttling structure for use in a fluid pressure device. A nozzle passage is formed between a primary side port and a nozzle back pressure chamber. A throttling mechanism made up from a plurality of orifice plates is disposed in the nozzle passage. Small diameter opening holes, which are smaller in diameter than the nozzle passage, are provided in the orifice plates. Outer edge portions of the orifice plates are retained in a second body part via seal members. Further, the orifice plates are separated mutually from each other by a predetermined distance along the direction of extension of the nozzle passage.