Vehicle Cleaning Pressure Booster for High-Pressure Liquid Pulses
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Solution Overview
Problem
Existing cleaning devices for vehicles face challenges in achieving high liquid pressure with minimal apparatus expenditure and structural space, while also efficiently using available compressed air, often requiring separate actuators for air and water conveyance.
Innovation Solution
A cleaning device with a pressure cylinder that uses compressed air to generate a higher liquid pressure through a movable separator dividing the cylinder into air and liquid chambers, where the liquid action surface is smaller than the air action surface, allowing for efficient liquid pressure generation without additional actuators, leveraging the vehicle's existing compressed-air supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate actuators are used for conveying air and water, then reliable cleaning function is achieved, but device complexity and apparatus expenditure increase
Solution Approach 1:
The patent combines the functions of air conveyance and water conveyance into a single actuator. The actuator has a piston that moves within a cylinder to convey compressed air, and the same piston movement simultaneously conveys cleaning liquid through a shared sealing arrangement and fluid pathways, eliminating the need for separate actuators for each medium.
Solution Approach 2:
The actuator is designed as a multi-functional component that performs both air conveyance and liquid conveyance functions. The piston and sealing system are configured to handle both compressed air and cleaning liquid, making the actuator universal for both cleaning media and reducing overall system complexity.
2Loss of substance
If liquid chamber fill volume is reduced to save liquid, then liquid consumption is reduced, but liquid pressure generation capability is compromised
Solution Approach 1:
The patent utilizes pneumatic pressure from compressed air to generate hydraulic pressure for the cleaning liquid. The actuator uses the pressure of compressed air acting on the piston to simultaneously convey both air and liquid, allowing liquid pressure to be generated without requiring a large liquid chamber fill volume or additional pumping mechanisms.
3Device complexity
If a single actuator conveys both air and water, then apparatus expenditure is reduced, but setting liquid pressure relative to charge pressure becomes inadequate
Solution Approach 1:
The patent enables pressure parameter control by allowing the liquid pressure to be set relative to the charge pressure of the compressed air. The single actuator system is configured with adjustable parameters that permit optimization of liquid pressure delivery while maintaining the simplified single-actuator architecture, addressing the pressure setting inadequacy through parameter optimization rather than additional components.
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 enables effective cleaning with a relatively small liquid quantity and high liquid pressure, reducing apparatus expenditure and dependency on separate actuating drives, while utilizing available compressed air for both energy and medium, thus optimizing cleaning performance and resource usage.
Implementation Method 1
the charge pressure acts on an air action surface, facing toward the air chamber, of the separator in order to generate a displacement force
Implementation Method 2
the pressure cylinder is configured as a pressure booster, wherein the liquid action surface is smaller than the air action surface facing toward same, such that the liquid pressure is higher than the charge pressure
Data Source
AI summary
A cleaning device for a vehicle provides a liquid cleaning pulse and/or a compressed-air cleaning pulse for at least one cleaning nozzle. The device has a cylinder and a separator that divides the cylinder volume in fluid-tight fashion into an air chamber and a liquid chamber. The separator is movable along a cylinder axis and bears sealingly against an internal wall of the cylinder. The air chamber has a port for admitting compressed air with a charge pressure for filling the chamber. The charge pressure acts on an air action surface of the separator to generate a displacement force on a liquid action surface, facing toward the liquid chamber, of the separator to generate a liquid pressure of the cleaning liquid in the liquid chamber. The cylinder is configured as a pressure booster. The liquid action surface is smaller than the air action surface facing toward the same.