Ice Maker Automated Cleaning System to Reduce Manual Maintenance

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Solution Overview

Problem

Manual cleaning of ice making units is labor-intensive and time-consuming, especially for appliances not connected to residential or municipal plumbing networks, leading to less frequent maintenance and potential quality issues due to scale and deposit buildup.

Innovation Solution

A household appliance with an automated cleaning system that includes a controller, pump, and drain tube, which initiates a cleaning cycle by pumping a cleaning solution through the ice maker and directing it through a drain tube, reducing user intervention and effort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual cleaning of ice making units is performed, then cleaning can be completed, but the process is labor-intensive and time-consuming requiring several hours and multiple user interventions

Engineering Contradiction:
Improvecleaning operationVSAvoidcleaning time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The ice making unit performs cleaning automatically using its own pump, water tank, and internal passages. The system self-circulates cleaning solution through the ice maker assembly and drains it automatically, eliminating the need for external manual intervention and reducing cleaning time from several hours to a single automated cycle.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The manual mechanical process of disassembling, scrubbing, and reassembling parts is replaced by an automated fluid circulation system. The pump-driven cleaning solution automatically flows through all internal passages and components, using hydraulic action instead of manual mechanical scrubbing to achieve cleaning.

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

2Reliability

If manual cleaning involves disassembling parts, then thorough cleaning can be achieved, but the process becomes more complex and time-consuming

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidcleaning process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The cleaning solution circulation system serves multiple functions: it cleans the water tank, pump, internal passages, and ice maker assembly simultaneously through a single automated cycle. This multi-functional approach achieves thorough cleaning of all components without requiring separate disassembly and cleaning steps for each part.

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

Solution Approach 2:

The system automatically circulates cleaning solution through all internal components without requiring user disassembly. The pump-driven flow reaches difficult-to-access areas through the existing fluid passages, achieving thorough cleaning while keeping the device assembled and simple to operate.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If ice making units are not cleaned frequently, then maintenance effort is reduced, but scale and deposit buildup occurs reducing ice quality and requiring remedial cleaning

Engineering Contradiction:
Improvemaintenance effortVSAvoidice quality
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system enables periodic automated cleaning cycles at user-defined intervals. Instead of requiring frequent manual cleaning or risking quality degradation, the automated system performs thorough cleaning periodically, maintaining ice quality while minimizing user maintenance effort to simply initiating the cycle.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system can monitor cleaning needs and automatically initiate cleaning cycles based on usage patterns or time intervals. This feedback mechanism ensures cleaning occurs before quality degradation occurs, maintaining reliability while reducing the perceived maintenance effort from the user.

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

The automated cleaning system simplifies the maintenance process, ensuring regular cleaning and extending the life of the ice making unit by reducing the need for manual scrubbing and frequent repairs, while being suitable for appliances without direct plumbing connections.

Implementation Method 1

The pump may be disposed within the outer casing. The pump may be fluid communication with the water tank and the ice maker to flow water from the water tank to the ice maker.

Methodology Applied
Scientific EffectPump: Pump

Implementation Method 2

The cleaning cycle can include pumping a volume of cleaning solution through the ice maker and directing the volume of cleaning solution through the at least one drain tube.

Methodology Applied
Scientific EffectFluid flow:

Implementation Method 3

Some form of cleaning is a common requirement for ice making units in general. Cleaning, for instance, extends the life of an ice making unit, as scale and deposits may build up over time.

Methodology Applied
Scientific EffectCleaning:

Data Source

PatentUS11992863B2Automated cleaning for ice making unit
Publication Date: 2024.05.28 HAIER US APPLIANCE SOLUTIONS INC
  • US11992863B2 patent drawing
  • US11992863B2 patent drawing
  • US11992863B2 patent drawing

AI summary

A household appliance includes an outer casing, a water tank and an ice maker. The water tank may be attached to the outer casing. The ice maker is disposed within the outer casing. The ice maker is in fluid communication with the water tank. The household appliance may further include a pump disposed within the outer casing, at least one drain tube attached to the outer casing and a controller. The pump may be in fluid communication with the water tank and the ice maker to flow water from the water tank to the ice maker. The at least one drain tube may define an exit point, the exit point located vertically below the ice mater. The controller may initiate a cleaning cycle that includes pumping a volume of cleaning solution through the ice maker and directing the volume of cleaning solution through the at least one drain tube.