Cleaning Gun Trigger Flow Control for One-Handed Spraying
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Solution Overview
Problem
Existing high-pressure cleaning pistols require the use of a second hand to adjust fluid flow, making one-handed operation difficult and often requiring interruption of the spray process.
Innovation Solution
A cleaning gun with a flow control device that allows fluid flow through different river paths, controlled by an actuating device such as a hand lever, enabling direct and simple one-handed operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a valve is used to control fluid flow in conventional cleaning guns, then the flow rate can be adjusted, but the operation requires a second hand and interrupts the spray process
Solution Approach 1:
The trigger serves dual functions: it activates the valve to start fluid flow and simultaneously acts as the actuating element to adjust the flow rate. By merging the trigger with the flow control mechanism, the device enables one-handed operation without interrupting the spray process, allowing continuous productivity while maintaining ease of operation.
Solution Approach 2:
The trigger is designed as a multi-functional component that performs both valve activation and flow rate adjustment. This universal design allows a single element to control multiple aspects of fluid delivery, eliminating the need for separate controls and enabling continuous one-handed operation.
2Measurement precision
If a complex valve mechanism is used for precise flow control, then the fluid flow can be accurately adjusted, but the device complexity increases
Solution Approach 1:
The flow rate is controlled by varying the opening degree of the valve, which changes the flow cross-section parameter. The actuating element provides continuous adjustment of this parameter, enabling precise fluid flow control through a simple linear movement rather than a complex multi-position mechanism.
Solution Approach 2:
The flow control function is extracted from a complex valve mechanism and implemented through a simpler actuating element that directly adjusts the valve opening. This extraction simplifies the overall device structure while maintaining precise control capability through direct mechanical linkage.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Cleaning gun (1), in particular for a high-pressure cleaner, comprising - a housing (2) with a flow channel (4), - a flow guide device (6) and - an actuating device (50), wherein the flow channel (4) has an inlet (8) and an outlet (10), wherein the flow guide device (6) is at least partially arranged in the flow channel (4), wherein the flow guide device (6) is designed such that a fluid flow through the flow channel (4) from the inlet (8) to the outlet (10) can take place on different flow paths, including at least a first flow path (41) and a second flow path (42), wherein the actuating device (50) is designed to actuate the flow guide device (6) and thus control the fluid flow through the different flow paths.