Micro-Fluid Jetting Assembly With Adjustable Impact Force

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Solution Overview

Problem

Existing fluid micro-injection devices face issues with adjustable impact force, cumbersome maintenance, and complex assembly/disassembly, leading to inefficiencies and high maintenance costs due to worn components and inflexible design.

Innovation Solution

A fluid micro-injection device with an execution system featuring a base body, movable member, adjusting member, and clearance sheets to adjust pre-tightening force, along with a flow channel assembly for easy disassembly and assembly, allowing for precise fluid ejection control and reduced maintenance costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a flexible hinge mechanism or operating element is used to perform secondary movement of closing element, then fluid micro-injection can be achieved, but both ends of closing element wear out increasing replacement frequency and maintenance cost

Engineering Contradiction:
Improvefluid micro-injection capabilityVSAvoidcomponent wear and replacement frequency
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent replaces the traditional mechanical hinge mechanism with a piezoelectric actuator that converts electrical signals directly into mechanical movement. This eliminates the need for flexible hinges and operating elements that cause wear, as the piezoelectric material expands and contracts in response to voltage changes, directly driving the closing element without intermediate mechanical components.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the problematic flexible hinge mechanism and operating elements from the system. By eliminating these intermediate mechanical components, the design achieves fluid micro-injection functionality while preventing wear at the closing element ends, thereby reducing replacement frequency and maintenance costs.

Inventive Principle:
Principle #2Taking out (Extraction)

2Device complexity

If lifting height of closing element is fixed or adjustment precision is low, then device structure is simple, but impact force for fluid ejection cannot be accurately adjusted

Engineering Contradiction:
Improvestructure simplicityVSAvoidimpact force adjustment precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent utilizes the ability to change electrical parameters (voltage magnitude, pulse duration, frequency) applied to the piezoelectric actuator to precisely control the lifting height of the closing element. By adjusting these electrical parameters, the impact force for fluid ejection can be accurately controlled without adding complex mechanical adjustment mechanisms, thus maintaining structural simplicity while achieving high precision.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces mechanical adjustment mechanisms with electrical control of the piezoelectric actuator. This substitution allows for precise adjustment of closing element lifting height through electrical signals, achieving accurate impact force control without increasing device complexity, as electrical parameter adjustment is inherently more precise and easier to control than mechanical adjustments.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If flow channel assembly has closed flow channels, then fluid containment is improved, but cleaning becomes cumbersome and maintenance cost increases

Engineering Contradiction:
Improvefluid containmentVSAvoidcleaning convenience
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The patent segments the flow channel assembly into detachable components, allowing the assembly to be disassembled for cleaning while maintaining fluid containment during operation. The segmented design enables easy access to internal flow channels for cleaning without compromising the sealed, closed-loop fluid containment system when assembled, thereby resolving the contradiction between fluid containment and cleaning convenience.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements a dynamic flow channel assembly that transitions from a closed, sealed state during operation (ensuring fluid containment) to an open, disassembled state for cleaning. The modular components can be easily connected and disconnected, allowing the system to adapt between maintaining fluid containment and enabling convenient cleaning, thus reducing maintenance costs while ensuring proper fluid containment during use.

Inventive Principle:
Principle #15Dynamics

4Stability of the object's composition

If assembly/disassembly of related accessories is complex, then device stability is improved, but installation efficiency decreases and maintenance becomes inconvenient

Engineering Contradiction:
Improvedevice stabilityVSAvoidinstallation efficiency
Core Design Contradiction:
Stability of the object's compositionVSProductivity

Solution Approach 1:

The patent segments the device into standardized, modular components with uniform connection interfaces. This segmentation allows accessories to be quickly assembled and disassembled using simple connection mechanisms, improving installation efficiency and maintenance convenience while maintaining device stability through precise modular interfaces that ensure proper alignment and secure connections.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements universal connection interfaces and standardized mounting structures that can accommodate various accessories. This universality simplifies assembly and disassembly procedures, allowing different accessories to be quickly installed and removed without complex procedures, thereby improving installation efficiency and maintenance convenience while maintaining device stability through consistent, reliable connection standards.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11478805B2Minute fluid jetting device
Publication Date: 2022.10.25 CHANGZHOU MINGSEAL ROBOT TECH CO LTD
  • US11478805B2 patent drawing
  • US11478805B2 patent drawing
  • US11478805B2 patent drawing

AI summary

A fluid micro-injection device comprises an execution system (100) and a flow channel assembly (200) connected with the execution system (100). The execution system (100) includes a base body (110), a movable member (120), an executor, an adjusting member (130) and a plurality of clearance sheets. The flow channel assembly (200) have a fluid seat (210), a nozzle (220) and a fluid supply joint (230).