Pest Control Vehicle Cylindrical Spray Nozzle Pneumatic Stabilization

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Solution Overview

Problem

Existing pest control vehicles face instability in chemical liquid spraying due to wind direction and uneven distribution on crop leaves, leading to uneven application.

Innovation Solution

The vehicle incorporates cylindrical members with chemical liquid and air passages, along with injection and blower devices, to support the spraying of chemical liquids, ensuring uniform distribution and a compact structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chemical liquid is sprayed using conventional nozzle units, then the spraying system is simple, but the spraying distance to crop leaves is unstable and chemical liquid is ununiformly sprayed due to wind impact

Engineering Contradiction:
Improvespraying stabilityVSAvoidspraying system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Air is introduced as an intermediary substance to support and stabilize the chemical liquid spray. The air injection portions inject air to support the chemical liquid to be sprayed, creating a more stable spray pattern that is less affected by wind conditions.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention uses pneumatic principles by introducing air flow through air passages and air injection portions to support the chemical liquid spray. This pneumatic support stabilizes the spray distance and distribution on crop leaves.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Manufacturing precision

If air injection portions and air passages are added to support chemical liquid spraying, then spraying uniformity is improved, but device complexity increases

Engineering Contradiction:
Improvespraying uniformityVSAvoidspray system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The cylindrical member integrates multiple functions into a single component: it serves as both the structural housing and contains internal chemical liquid passages and air passages. The chemical liquid injection portions and air injection portions are combined in the same cylindrical structure, reducing the number of separate components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The cylindrical member performs multiple functions simultaneously: it stores chemical liquid, guides chemical liquid flow through passages, introduces air through separate passages, and provides structural support for the spray system. This multi-functionality reduces overall system complexity.

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

3Device complexity

If chemical liquid ducts are extended to cover both left and right injection portions, then the number of ducts is reduced, but the device becomes less compact and more complex

Engineering Contradiction:
Improvenumber of ductsVSAvoidsystem compactness
Core Design Contradiction:
Device complexityVSVolume of moving object

Solution Approach 1:

The spray system is divided into separate left and right chemical liquid ducts, each serving specific injection portions. This segmentation allows for more compact arrangement and easier routing of ducts compared to a single extended duct covering all injection portions.

Inventive Principle:
Principle #1Segmentation

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

This configuration allows for stable and uniform spraying of chemical liquids over a wider area, enhancing the effectiveness of pest control while maintaining a compact design.

Implementation Method 1

Air flows through the air passage. The air injection portions are connected to the air passage and inject the air to support the chemical liquid to be sprayed.

Methodology Applied
Scientific EffectAir injection to support spray:

Data Source

PatentEP4070656A1Pest control vehicle
Publication Date: 2022.10.12 YANMAR HLDG CO LTD
  • EP4070656A1 patent drawingFigure 1
  • EP4070656A1 patent drawingFigure 2
  • EP4070656A1 patent drawingFigure 3

AI summary

[Problem] A pest control vehicle that can appropriately spray chemical liquid is provided. [Solution] A pest control vehicle 1 includes crawler traveling portions 10, a chemical liquid tank 22, and cylindrical members 31. The chemical liquid tank 22 stores the chemical liquid for pest control. A space is formed inside the cylindrical member 31. The cylindrical member 31 includes a chemical liquid passage, chemical liquid injection portions 32, an air passage, and air injection portions 33. The chemical liquid flows through the chemical liquid passage. The chemical liquid injection portions 32 are connected to the chemical liquid passage and inject the chemical liquid. Air passes through the air passage. The air injection portions 33 are connected to the air passage and inject the air to support the chemical liquid to be sprayed.