Piston-Cylinder Bypass Throttling for Lower Fluid Injection Velocity
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Solution Overview
Problem
Existing fluid injection or suction devices struggle to reduce cylinder movement velocity without increasing body size or decreasing fluid injection or suction quantity.
Innovation Solution
A fluid injection or suction device with a piston-cylinder mechanism, guide, and nozzles, where a pipe communicates with a fluid pressure source and includes a short-circuit flow passage with a throttle unit to control fluid flow and reduce cylinder movement velocity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the generated pressure from the high-pressure source is decreased to reduce cylinder movement velocity, then the cylinder movement velocity is reduced, but the fluid injection quantity decreases
Solution Approach 1:
The flow passage is segmented into multiple paths: a normal flow passage and a short-circuit flow passage. The short-circuit flow passage is provided with a throttle unit that can be opened or closed independently. When the throttle unit is opened, fluid can flow through both passages, increasing the total fluid injection quantity even when the generated pressure is decreased to reduce cylinder movement velocity.
Solution Approach 2:
The throttle unit in the short-circuit flow passage is configured to be dynamically adjustable. By opening the throttle unit, the system compensates for the reduced fluid injection quantity caused by decreased generated pressure, thereby maintaining adequate fluid injection quantity while achieving reduced cylinder movement velocity.
2Speed
If the generated pressure from the low-pressure source is increased to reduce cylinder movement velocity, then the cylinder movement velocity is reduced, but the fluid suction quantity decreases
Solution Approach 1:
The flow passage is divided into a normal flow passage and a short-circuit flow passage with a throttle unit. When the throttle unit is opened, additional fluid can be supplied through the short-circuit path, compensating for the reduced fluid suction quantity that occurs when generated pressure is increased to reduce cylinder movement velocity.
Solution Approach 2:
The dynamically adjustable throttle unit allows the system to compensate for reduced fluid suction quantity by opening the short-circuit flow passage, thereby maintaining adequate fluid suction quantity while achieving the desired reduced cylinder movement velocity.
3Speed
If the maximum volume of the two spaces in the cylinder is increased to reduce cylinder movement velocity, then the cylinder movement velocity is reduced, but the diameter of the cylinder increases which may limit the installation space
Solution Approach 1:
Instead of increasing the cylinder volume to reduce movement velocity, the invention uses a dynamically adjustable throttle unit in the short-circuit flow passage. This allows velocity control through flow regulation rather than volume changes, avoiding the need to increase cylinder diameter and preserving installation space.
4Speed
If the nozzle diameter is reduced to reduce cylinder movement velocity, then the cylinder movement velocity is reduced, but the fluid injection quantity or suction quantity decreases
Solution Approach 1:
The flow system is segmented into a normal flow passage and a short-circuit flow passage with a throttle unit. By opening the throttle unit, additional fluid flow is provided through the short-circuit path, compensating for the reduced fluid injection quantity that would result from using a smaller nozzle diameter to control cylinder movement velocity.
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
The device effectively reduces cylinder movement velocity while maintaining fluid injection or suction quantity and preventing an increase in body size, achieving a simple and efficient configuration.
Implementation Method 1
the short-circuit flow passage is provided with a throttle unit that throttles a flow passage
Data Source
AI summary
The present invention includes: a cylinder; a piston that is inserted in the cylinder and partitions an interior of the cylinder into fluid chambers and; guides that support the piston and guide movement of the cylinder, the guides including a first internal flow passage and a second internal flow passage; and nozzles communicating with the fluid chambers, respectively, wherein a pipe to communicate with a fluid pressure source is configured to switch between the external pipes, a flow passage from the fluid pressure source to the nozzles includes a short-circuit flow passage that short-circuits a flow passage communicating with the fluid pressure source and a flow passage not communicating with the fluid pressure source, and this short-circuit flow passage is provided with a throttle unit that throttles a flow passage.