Capillary Watering Device with Opaque Hood and Transparent Level Window

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Solution Overview

Problem

Existing watering devices for potted plants using capillary water transport lines face challenges in preventing algae growth and efficient water level control, while ensuring reliable water supply and easy maintenance.

Innovation Solution

A hood-shaped cover for the water reservoir made of non-transparent material with a transparent control area, incorporating a fixing device for the capillary water transport line and a refill opening that can be closed manually, allows for effective prevention of algae growth, easy level monitoring, and secure water supply without detaching the line from the soil substrate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the cover is made non-transparent to prevent algae growth, then algae growth is prevented, but visual level control becomes difficult

Engineering Contradiction:
Improvealgae growthVSAvoidvisual level control
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The cover is designed with differentiated transparency: the main cover body is made non-transparent to prevent algae growth, while a specific control area is made transparent to enable visual water level monitoring. This local quality differentiation resolves the contradiction by applying different optical properties to different regions of the same component.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If the water reservoir is made transparent for level control, then visual level control is enabled, but algae growth is promoted

Engineering Contradiction:
Improvevisual level controlVSAvoidalgae growth
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The water reservoir is designed with a localized transparent control area that allows visual level monitoring, while the rest of the reservoir remains opaque to prevent algae growth. This selective transparency application enables both functions simultaneously.

Inventive Principle:
Principle #3Local quality

3Reliability

If the capillary water transport line is fixed securely in the water tank, then reliable water supply is ensured, but maintenance becomes difficult

Engineering Contradiction:
Improvewater supply reliabilityVSAvoidmaintenance difficulty
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The fixing device employs a movable clamp that can be shifted between a clamping position (securing the water transport line for reliable operation) and a release position (allowing easy removal for maintenance). This dynamic positioning capability resolves the contradiction between secure fixation and easy maintenance.

Inventive Principle:
Principle #15Dynamics

4Stability of the object's composition

If the cover is designed to support the planter, then structural stability is improved, but device complexity increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidcover structure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The cover is designed to perform multiple functions: it covers the water reservoir, provides a support surface for the planter through an integrated support leg, and includes the transparent control area for level monitoring. By merging these functions into a single component, structural stability is achieved without significantly increasing overall device complexity.

Inventive Principle:
Principle #5Merging (Combining)

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 prevents algae growth, facilitates easy visual level control, ensures reliable water supply even at low water levels, and allows for maintenance without disturbing the water transport line, enhancing the operational efficiency and usability of the irrigation device.

Implementation Method 1

Due to the capillary effect within the fibrous material, water is transported at a low flow rate from the reservoir via the strand of fibrous material to the soil substrate

Methodology Applied
Scientific EffectCapillary effect: Capillary Action

Data Source

PatentEP2709437B1Watering device comprising a capillary water transport line
Publication Date: 2018.04.18 HUSQVARNA AB
  • EP2709437B1 patent drawingFigure 1~2
  • EP2709437B1 patent drawingFigure 3~4

AI summary

The invention relates to a watering device operating according to drip watering effect, having a capillary water transport line (WL) made of a fibrous material, which transports water from a reservoir to an end substrate (ES) of a plant pot (TO). According to the invention, a water reservoir (WB) is covered with a hub-shaped covering (BD) which forms a support surface for the plant pot (TO) having an upwards facing surface. Said covering (BD) is preferably non-transparent to light, and as a result the water reservoir (WB), in the preferred embodiment, is made of a homengenous, transparent plastic material. By means of a recess in a lateral wall of the non-transparent covering (BD), in particular via a projection of the water reservoir (WB) protruding outwards through the recess, the filling level of the water reservoir (WB) can be checked easily.