Efficient Sensor Cleaning with Dual-Pulse Control
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Summary
Problems
Existing cleaning devices for vehicles lack effective individual control over cleaning pulses, particularly for compressed air cleaning pulses, and require multiple equipment components, increasing costs.
Innovation solutions
A cleaning device with a pressure cylinder having a movable separating arrangement to divide the cylinder volume into air and liquid chambers, allowing for independent control of compressed air and liquid cleaning pulses using a switching valve and bypass valve, which enables direct pneumatic connection to the nozzle for enhanced pressure and reduced equipment costs.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a pressure cylinder with both air chamber and liquid chamber is used to provide both cleaning pulses with one pressure source, then equipment cost is reduced, but individual control of compressed air cleaning pulse becomes difficult
Why choose this principle:
The pressure cylinder is segmented into two independent chambers (air chamber and liquid chamber) that can be controlled separately. The air chamber can be filled with compressed air independently, and the liquid chamber can be filled with cleaning liquid independently, allowing individual control of each cleaning pulse type while using a single pressure cylinder structure.
Principle concept:
If a pressure cylinder with both air chamber and liquid chamber is used to provide both cleaning pulses with one pressure source, then equipment cost is reduced, but individual control of compressed air cleaning pulse becomes difficult
Why choose this principle:
A movable separating arrangement acts as an intermediary between the air chamber and liquid chamber. This separator allows pressure transfer from the air chamber to the liquid chamber when needed, but can also be positioned to allow independent operation of each chamber, enabling both cost efficiency and individual control.
Application Domain
Data Source
AI summary:
A cleaning device with a pressure cylinder having a movable separating arrangement to divide the cylinder volume into air and liquid chambers, allowing for independent control of compressed air and liquid cleaning pulses using a switching valve and bypass valve, which enables direct pneumatic connection to the nozzle for enhanced pressure and reduced equipment costs.
Abstract
A cleaning device for a vehicle provides a liquid cleaning pulse and/or a compressed air cleaning pulse for a cleaning nozzle. The cleaning device includes a module compressed air connection for receiving compressed air and a pressure cylinder with a cylinder volume. A movable separator divides the cylinder volume into a compressed air receiving chamber and a cleaning liquid receiving chamber in a fluid tight manner. The air chamber has an air chamber connection which can be supplied with compressed air. Contraction of the liquid chamber occurs when filling the air chamber by moving the separator against a restoring force. A switching valve establishes a pneumatic connection between the module compressed air connection and the air chamber connection. A bypass valve establishes a pneumatic connection between the module compressed air connection and the compressed air nozzle line while bypassing the switching valve for providing a bypass compressed air flow.