Vehicle Diaphragm Valve Flow Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Diaphragm valves in vehicles experience noise and reduced durability due to vortex and turbulent flow when open, causing rapid fluid changes and wear on the diaphragm.
Innovation Solution
A diaphragm valve design with a valve head that seals the lower chamber when closed, a mesh layer with a grid shape in the discharge flow passage, and guide portions at the inlet to smooth fluid flow, reducing noise and improving durability by preventing fluid entry into the diaphragm chamber and stabilizing fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the valve is open to allow fluid flow, then the valve can perform its function of fluid control, but vortex and turbulent flow occur in the diaphragm chamber causing noise and reduced diaphragm durability
Solution Approach 1:
The patent extracts the harmful fluid flow from the diaphragm chamber by introducing a separate discharge flow passage that bypasses the chamber. The valve outlet is divided into a main flow passage and a discharge flow passage, allowing fluid to be discharged without entering the diaphragm chamber, thereby eliminating vortex and turbulent flow in the chamber while maintaining fluid control function
Solution Approach 2:
The discharge flow passage acts as an intermediary pathway between the valve inlet and valve outlet. This intermediate passage allows fluid to flow directly from inlet to outlet without contacting the diaphragm chamber, serving as a mediator that prevents harmful fluid-diafragm interaction while maintaining flow control
2Ease of operation
If the chamber communicates with the flow passage for pressure formation, then the valve can operate via pressure difference, but fluid enters the diaphragm chamber causing rapid flow changes and noise
Solution Approach 1:
The patent segments the flow path into distinct passages: a main flow passage for pressure formation and a separate discharge flow passage for fluid discharge. This segmentation allows the diaphragm chamber to maintain pressure difference operation while preventing fluid from entering the chamber, thereby eliminating noise from rapid flow changes
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 design effectively reduces noise and enhances diaphragm durability by preventing vortex and turbulent flow, allowing for smoother fluid discharge and improved noise attenuation.
Implementation Method 1
A mesh layer may be formed in a discharge flow passage connected to the valve outlet and may have a ventilation portion having a grid shape for attenuating noise generated from flow of the fluid
Implementation Method 2
The diaphragm valve is operated by the movement of the diaphragm resulting from a pressure difference between chambers divided by the diaphragm in a diaphragm chamber
Implementation Method 3
The valve head closes the chamber opening port when the valve is open so that the valve head comes into close contact with a peripheral part of the chamber opening port, thereby closing the chamber opening port
Data Source
AI summary
A diaphragm valve for a vehicle includes: a diaphragm chamber having an upper chamber and a lower chamber divided by a diaphragm and communicating with a valve inlet and a valve outlet. The upper chamber has a nipple in which a fluid flows or from which a fluid is discharged, and the lower chamber has a chamber opening port at a lower end thereof. A valve rod is coupled to the diaphragm and extends toward the valve outlet. A valve head is provided at a position corresponding to an end of the valve rod and has a wider cross sectional area than the valve rod. The valve head closes the valve outlet when the valve is closed, and closes the chamber opening port when the valve is open.