Fluid Dispensing System With Segmented Conduit And Retractable Grip
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Solution Overview
Problem
Existing fluid dispensing systems face issues with leakage due to numerous sealing surfaces, operator exposure to the dispensed material, cumbersome storage, and increased manufacturing costs, as well as operator fatigue from high trigger cycle requirements.
Innovation Solution
A fluid dispensing system with a blow molded container, a manually actuated pressure pump, and a flexible discharge conduit that allows for reduced operator exposure and reconfiguration without pressurization, incorporating components with different manufacturing tolerances, and featuring a bleed valve for controlled pressure relief.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If telescoping conduits are used to allow operator spacing from discharge, then operator exposure is reduced, but the system requires extensive sealing surfaces that lead to leakage and manufacturing complexity increases
Solution Approach 1:
The discharge conduit is divided into a fixed portion connected to the container and a movable grip body portion that can be independently positioned. This segmentation allows the operator to hold the grip body at a distance from the discharge nozzle, reducing exposure without requiring complex telescoping mechanisms with multiple seals.
Solution Approach 2:
The trigger mechanism is extracted from the grip body and relocated to the fixed portion of the discharge conduit near the container. This allows the grip body to be a simpler, movable component without integrated sealing requirements, reducing overall system complexity while maintaining operator protection.
2Volume of stationary object
If trigger sprayer handle is stored within container recess during non-use, then storage space is reduced, but special molding processes with high tolerances increase manufacturing costs
Solution Approach 1:
The grip body is designed to be movable rather than fixed, allowing it to be retracted into the container during storage and extended during use. This dynamic configuration enables compact storage without requiring expensive precision molding for permanent integration.
Solution Approach 2:
The grip body nests within the container body during storage, with the movable portion fitting inside the fixed container structure. This nesting arrangement reduces overall storage volume without requiring complex precision-molded integrations.
3Volume of moving object
If pump mechanism is disposed within handheld trigger, then trigger size is reduced, but pump capacity is substantially limited requiring high trigger cycle frequency
Solution Approach 1:
The pump mechanism is separated from the grip body and relocated to the fixed portion of the discharge conduit. This allows the pump to have adequate capacity for efficient liquid dispensing while the grip body remains a lightweight, manageable component that does not require housing a large pump.
Solution Approach 2:
The fixed portion of the discharge conduit acts as an intermediary housing for the pump mechanism, connecting the container to the movable grip body. This intermediary structure provides space for the pump while maintaining the ergonomic advantages of a separate grip body.
4Length of moving object
If discharge conduit length is changed, then operator spacing is adjusted, but available volume changes causing increased liquid pressure that can lead to system failure
Solution Approach 1:
The discharge conduit is segmented into a fixed portion with constant volume and a movable grip body portion. This segmentation isolates the volume-critical section from the length-adjustable section, allowing operator spacing adjustment without changing the pressurized volume and maintaining system reliability.
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 system effectively reduces operator exposure, enhances storage efficiency, and maintains operating pressure while minimizing manufacturing costs, reducing the risk of container failure and operator fatigue.
Implementation Method 1
a manually actuated pressure pump
Implementation Method 2
a flexible discharge conduit connecting the outlet port to a terminal end
Implementation Method 3
featuring a bleed valve for controlled pressure relief
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
A fluid dispensing system (10) includes a pump assembly (40) for pressurizing a low cost container (20), the container (20) non reversibly connected to a coupler module (100). A wand assembly (80) is releasably connected to the coupler module (100). A discharge conduit (60) fluidly connects the wand assembly (100) to the container (20). The wand assembly (100) includes a grip body (82) slidable relative to the discharge conduit (60) between a retracted storage position and an extended operable position. The coupler module (100) is connected to a skirt (120), the coupler module (100) including a mating surface (102) for releasably retaining the grip body (82). The coupler module (100) is injection molded and The container (20) is a blow molded pressure vessel. As a blow molded component, the container (20) is relatively inexpensive compared to an injection molded container of a comparable size.