Removable Waste Liquid Tank for Wall-Hung Water Heater Drainage

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Solution Overview

Problem

Existing water heaters and heat pump systems require special piping for condensation water and overpressure discharge, which is aesthetically unpleasing and inefficient.

Innovation Solution

A tank is designed to collect, store, and dispose of waste liquids from water heaters and heat pumps, eliminating the need for dedicated piping by using a removable vessel with gravity-fed drainage and optional flexible hose for easy emptying, integrated with sensors for automated warnings and appliance control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If special piping with dedicated hydraulic connections is used to convey waste liquid, then the waste liquid can be discharged directly into the sewage system, but the installation becomes aesthetically unpleasing and requires complex piping infrastructure

Engineering Contradiction:
Improveinstallation simplicityVSAvoidpiping infrastructure
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent combines the waste liquid collection tank with the water heater appliance itself, integrating the previously separate piping infrastructure into the appliance body. The tank is positioned within or adjacent to the water heater, eliminating the need for external piping to convey waste liquid.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts the waste liquid collection and storage function from the external piping system and incorporates it directly into the appliance structure. The tank is built-in rather than external, removing the need for dedicated hydraulic connections for waste discharge.

Inventive Principle:
Principle #2Taking out (Extraction)

2Ease of operation

If anti-aesthetic pipes are used to connect the appliance to collectors, then waste liquid can be discharged, but the appearance of the installation is degraded

Engineering Contradiction:
Improvewaste liquid disposalVSAvoidinstallation appearance
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

The patent merges the waste liquid tank with the appliance housing, so that the collection and storage functions are integrated into the existing aesthetic form of the water heater. This eliminates the need for visible external pipes and collectors that would degrade the appearance.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If a removable tank is used for waste liquid collection, then the appliance functionality is improved and aesthetics are maintained, but the tank requires periodic manual emptying

Engineering Contradiction:
Improvedisposal flexibilityVSAvoidemptying time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent makes the tank removable and movable, allowing it to be detached for emptying and repositioned as needed. This dynamic design provides flexibility in disposal methods while maintaining the aesthetic integration during normal operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent segments the appliance into a main body and a separate removable tank component. This allows the tank to be independently removed for emptying while the main appliance remains in place, providing operational flexibility without compromising the integrated design.

Inventive Principle:
Principle #1Segmentation

4Extent of automation

If sensors are integrated to automate appliance control based on tank filling state, then appliance functionality is improved, but the device complexity increases

Engineering Contradiction:
Improveappliance control automationVSAvoidsensor integration
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The patent enables the appliance to monitor its own waste liquid collection status through integrated sensors that detect tank filling levels. The system automatically controls appliance operation based on this self-monitored information, reducing the need for external monitoring and manual intervention.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent implements a feedback mechanism where sensors continuously monitor the tank filling state and provide information to the appliance control system. This feedback loop enables automatic adjustment of appliance operation to prevent overflow and optimize waste liquid management.

Inventive Principle:
Principle #23Feedback

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

Facilitates quick and functional collection and disposal of waste liquids, improving appliance functionality and aesthetics by eliminating the need for special hydraulic connections and allowing flexible disposal methods.

Implementation Method 1

said tank (1) being adapted to be placed below said thermo-sanitary appliance, said tank (1) comprising a filling inlet (1.2) in communication with said draining hole (AP.2) so as to allow the waste liquid to flow into said tank (1) by gravity

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentEP3583362B1Tank for the collection of waste liquid of a water heater
Publication Date: 2021.04.07 ARISTON THERMO SPA
  • EP3583362B1 patent drawingFigure 1A~1E
  • EP3583362B1 patent drawingFigure 2~3
  • EP3583362B1 patent drawingFigure 4~5

AI summary

The object of the present invention is a tank (1) to be associated with a wall-hung appliance, for example a standard storage water heater (TS) or a heat pump water heater (AP) of the monobloc type. Said tank (1) is adapted to the collection of the waste liquid produced by said wall-hung appliance (AP, TS) and comprises a closed vessel having a shape substantially similar to that of said appliance (AP; TS), whereto it is removably constrained at the bottom.