Rotor Nozzle With Pressure-Controlled Bypass for Vibration Control
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Solution Overview
Problem
High-pressure rotor nozzles experience excessive vibrations and wear due to high centrifugal forces and radial recoil components, leading to noise and reduced operational lifespan.
Innovation Solution
A rotor nozzle design featuring a pressure-controlled bypass system and a counterweight to manage centrifugal and radial forces, along with a dual-section fluid channel for compactness and efficient flow management, preventing excessive rotational speeds and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the rotor is mounted on a bearing part that is rotatable about the longitudinal axis to enable conical path of movement, then the rotor nozzle can generate a circulating jet that sweeps over a conical surface, but high centrifugal forces cause excessive vibrations and wear
Solution Approach 1:
A counterweight is integrated into the bearing part to compensate for the centrifugal force generated by the rotor during operation. The counterweight rotates with the bearing part and creates an opposing centrifugal force that balances the radial recoil component, thereby reducing vibrations and wear on the rotor nozzle components.
2Power
If the fluid pressure is increased to improve cleaning performance, then the rotational speed of the bearing part increases, but this leads to excessive wear and potential damage
Solution Approach 1:
A feedback mechanism is implemented where the rotational speed of the bearing part is monitored and used to control the opening of the bypass. When the rotational speed exceeds a predetermined threshold, the bypass opens to reduce fluid flow through the vortex chamber, thereby limiting further increases in rotational speed and preventing excessive wear and damage.
3Device complexity
If the rotor is supported on the outlet opening side to simplify mounting, then the structure is simplified, but radial recoil components cause imbalance and vibrations
Solution Approach 1:
The counterweight in the bearing part is specifically designed to compensate for the radial recoil component that arises when the rotor is supported on the outlet opening side. This counterbalancing force eliminates the imbalance and vibrations that would otherwise result from this simplified mounting arrangement.
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 significantly reduces vibrations and wear, ensuring low-noise operation and extended lifespan by controlling rotational speeds and optimizing fluid flow within the nozzle.
Implementation Method 1
The pressure-controlled valve automatically releases the bypass as a function of a pressure of the fluid, so that the fluid can flow into the vortex chamber through the inflow opening and additionally through the bypass
Implementation Method 2
The bearing part can be rotated by a fluid that enters the vortex chamber through the inflow opening
Implementation Method 3
compensating for the centrifugal force by means of Compensating body the resulting imbalance and the resulting vibrations can be reduced
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A rotary nozzle, particularly for high-pressure cleaners, with a nozzle housing having a swirl chamber between an inlet opening and an outlet opening, wherein a rotor inclined to a longitudinal axis of the nozzle housing is arranged in the nozzle housing, which is movably supported on one side facing the outlet opening and is mounted on a bearing part rotatable about the longitudinal axis on one side facing away from the outlet opening, wherein the bearing part can be set in rotation by fluid entering the swirl chamber through the inlet opening, wherein the rotary nozzle has, in addition to the inlet opening, a bypass and a pressure-controlled valve which automatically releases the bypass depending on the pressure of the fluid, so that fluid can flow into the swirl chamber through the inlet opening and additionally through the bypass.