Pneumatic Liquid Dispensing Assembly for Hydroponic Plants
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Solution Overview
Problem
Hydroponic systems face challenges with the need for a pressurized water source, non-uniform nutrient distribution, high component complexity, and increased costs due to pressurized nutrient mixing and solenoid valves, which affect reliability and efficiency.
Innovation Solution
A pneumatic liquid nutrient dispensing assembly that eliminates the need for a high-pressure water source, using a hollow intake structure with a gas chamber and distribution hub to supply gas and liquid nutrients uniformly to plants, reducing system complexity and components, and allowing for precise mixing and distribution without pressurized nutrient introduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pressurized water source is used to operate the drip hose, then the irrigation system can function, but the system requires additional components and increases complexity
Solution Approach 1:
The patent extracts and eliminates the pressurized water source requirement by using atmospheric pressure differentials created through controlled air injection. The system replaces the external pressurized water supply with a pneumatic lifting mechanism that draws water up through a hollow stem, thereby removing the need for complex pressurized water infrastructure while maintaining irrigation functionality
Solution Approach 2:
The patent applies pneumatic principles by using air injection into the hollow stem to create pressure differentials that lift and transport water and nutrient solutions. This pneumatic mechanism replaces the traditional hydraulic pressurized water system, reducing component complexity while achieving the same irrigation effect
2Ease of operation
If a long high pressure drip hose is used, then water can be delivered to plants, but pressure changes result in non-uniform nutrient distribution
Solution Approach 1:
The patent segments the water delivery system into multiple short hollow stems, each serving individual plants or small groups of plants. This segmentation eliminates the pressure differential problems inherent in long continuous hoses, as each short stem maintains relatively uniform internal pressure, thereby ensuring uniform nutrient distribution to each plant while still achieving water delivery from a central reservoir
3Manufacturing precision
If nutrients are introduced under pressure into the pressurized water stream, then proper mixing is achieved, but the cost and complexity of the system increases
Solution Approach 1:
The patent employs self-service mixing where nutrients are introduced into the hollow stems and automatically mixed with water through the flow dynamics of the pneumatic lifting process. The system uses the natural movement of air and water currents within the stems to achieve proper mixing ratios, eliminating the need for external pressurized mixing equipment while maintaining precise nutrient delivery
4Extent of automation
If an automated solenoid valve is used to control irrigation, then automation is achieved, but the cost and likelihood of failure increases
Solution Approach 1:
The patent replaces complex mechanical solenoid valves with a simpler pneumatic control system that uses air pressure differentials and manual or timer-based air supply control. This substitution eliminates the fragile electrical components and moving parts of solenoid valves, achieving irrigation automation through pneumatic timing mechanisms while significantly improving system reliability and reducing failure points
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 solution provides reliable and uniform distribution of water and nutrients, reducing system complexity and costs, and enabling operation without a high-pressure water source, while ensuring precise mixing and efficient nutrient delivery to plants.
Implementation Method 1
A gas chamber receives a gas from a gas source and the gas chamber supplies gas to the first annular passage
Implementation Method 2
A pneumatic liquid nutrient dispensing assembly that eliminates the need for a high-pressure water source, using a hollow intake structure with a gas chamber
Data Source
AI summary
Disclosed is a pneumatic liquid nutrient dispensing assembly for hydroponically cultivated plants. The assembly includes a reservoir and a liquid nutrient dispenser disposed within the reservoir. The liquid nutrient dispenser includes a substantially coaxial pump body with inner and outer tubes forming a distribution end having a distribution hub and an inlet end having a liquid intake structure. Airflow in an annular duct formed between the walls of the coaxial tubes enters the inner tube through an annular passage and carries liquid nutrient within the inner tube to the distribution hub. Distribution members fluidly connected to the distribution hub direct a flow of liquid nutrients and air to one or more plants.