Rotatable Flow Deflector Layout for Low-Pressure-Loss Direction Control
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Solution Overview
Problem
Conventional flow control devices are heavy, bulky, expensive, and suffer from significant pressure loss due to high fluid deflection angles, requiring complex manufacturing and maintenance-intensive planetary gears.
Innovation Solution
A directional flow control device with a rotatable flow deflector housed within a shell, featuring a flow channel with an intake bore coaxial with the rotation axis and a discharge bore offset at a fluid path change angle of less than 45°, utilizing a biasing spring for sealing and a driver assembly with an electric motor and gear system for efficient fluid direction control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional flow control devices use a rotating bearing with planetary gears to achieve torque for rotation, then the device can control fluid flow direction, but the device becomes heavy, bulky, and expensive with high maintenance requirements
Solution Approach 1:
The patent removes the planetary gear system entirely from the flow control device. Instead of using a motor with planetary gears to rotate a bearing, the invention uses a simple rotatable flow deflector that can be turned by any means (manual operation, electric motor, pneumatic actuator, etc.). This extraction of the complex gear mechanism eliminates the weight, cost, and maintenance issues associated with planetary gears while preserving the core function of controlling fluid flow direction.
Solution Approach 2:
The patent replaces the mechanical planetary gear system with a direct rotation mechanism. The flow deflector rotates about an axis parallel to the longitudinal axis without requiring gear multiplication of torque. This substitution can be achieved through various means including direct electric motor coupling, pneumatic actuators, or even manual operation, thereby eliminating the need for heavy planetary gears while maintaining the ability to control flow direction effectively.
2Ease of operation
If conventional flow control devices use a rotating bearing rotated perpendicular to channels, then the device can direct flow, but significant pressure loss occurs due to high angle of deflection
Solution Approach 1:
The patent changes the orientation parameter of the flow deflector from perpendicular to the channels (conventional design) to parallel with the longitudinal axis. This parameter change allows the flow deflector to redirect fluid at much smaller angles, thereby reducing turbulence and pressure loss. The flow deflector achieves effective flow direction control by rotating about an axis parallel to the longitudinal axis, which enables smoother flow transitions and minimizes energy loss due to deflection.
3Ease of operation
If conventional flow control devices use angled inlet and outlet channels at 45° or 90°, then the device can achieve flow redirection, but manufacturing complexity and cost increase
Solution Approach 1:
The patent creates a universal flow control device where the flow deflector can redirect flow to multiple outlet channels by rotating about a longitudinal axis. Instead of requiring specifically angled inlet and outlet channels for each flow direction, the universal rotatable deflector can serve multiple outlet channels positioned at different angular locations. This multi-functionality simplifies manufacturing because the inlet and outlet channels can be positioned more simply (with outlets positioned at angular locations around the longitudinal axis) while the rotatable deflector provides the flexibility to direct flow to any desired outlet.
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 solution reduces the size and weight of the device, minimizes pressure loss, and eliminates the need for costly planetary gears, while maintaining efficient fluid flow control and reducing maintenance requirements.
Implementation Method 1
a biasing spring configured to engage the front housing and an end wall of the shell to bias the front housing toward the rear housing, the biasing spring sealingly compressing the front housing against the flow deflector
Data Source
Figure 1~3
Figure 2
Figure 4~5
AI summary
A directional flow control device (100) includes a housing (140) extending along a longitudinal axis (148) between an inlet end (150) and a discharge (152) end. A flow deflector (142) is received in the housing. The flow deflector is rotatable in the housing about a rotation axis (166) parallel to the longitudinal axis. The flow deflector has a flow channel (260) therethrough having an intake bore (262) at a front end (254) of the flow deflector and a discharge bore (264) at a rear end (256) of the flow deflector. The intake bore is coaxial with the rotation axis and the discharge bore is offset from the rotation axis.