Method for operating a household refrigerator having specific operating process coordination in dependence upon a quiet time interval, and household refrigerator

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Solution Overview

Problem

Household refrigerators with ice makers generate disruptive noise during ice production, which can interfere with user activities such as conversations or quiet environments.

Innovation Solution

A method and refrigerator configuration that allows for user-defined deactivation of ice production mode during quiet time intervals, coordinating operations to minimize noise emissions by temporarily disabling louder processes and adjusting quieter processes to be executed during these intervals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the ice production mode operates continuously, then ice production efficiency is improved, but noise emission increases and disrupts user activities

Engineering Contradiction:
Improveice production efficiencyVSAvoidnoise emission
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The system dynamically adjusts the ice production mode based on user-defined quiet time intervals. During non-quiet periods, the ice maker operates at full productivity. During quiet periods, it automatically deactivates or reduces operation, coordinating processes to minimize noise while maintaining overall production efficiency across the full operational cycle.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters by deactivating specific sub-processes during quiet time intervals. The control unit modifies the operation mode from continuous production to a coordinated schedule that alternates between active production and quiet periods, adjusting the noise emission parameter while maintaining ice production capability.

Inventive Principle:
Principle #35Parameter changes

2Object-generated harmful factors

If the ice production mode is deactivated during quiet time intervals, then noise emission is reduced, but ice production efficiency decreases

Engineering Contradiction:
Improvenoise emissionVSAvoidice production efficiency
Core Design Contradiction:
Object-generated harmful factorsVSProductivity

Solution Approach 1:

The system performs preliminary actions by coordinating and executing quieter operating processes during quiet time intervals. Instead of complete shutdown, the control unit schedules alternative processes that maintain ice production progress with reduced noise, preparing and executing tasks in advance or during quiet periods to compensate for reduced overall productivity.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system maintains continuity of useful action by coordinating multiple operating processes. During quiet periods, quieter processes are executed that still contribute to ice production or preparation, ensuring that the overall useful action continues without complete interruption, thereby maintaining productivity while reducing noise emission.

Inventive Principle:
Principle #20Continuity of useful action

3Object-generated harmful factors

If multiple operating processes are coordinated during quiet time intervals, then noise emission is minimized, but system complexity increases

Engineering Contradiction:
Improvenoise emissionVSAvoidoperating process coordination
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The control unit uses feedback from user-defined quiet time intervals to automatically coordinate operating processes. The system receives input about quiet periods and automatically adjusts the schedule of ice production processes, creating a closed-loop control system that manages complexity through automated decision-making based on user preferences and current operational state.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12578135B2Method for operating a household refrigerator having specific operating process coordination in dependence upon a quiet time interval, and household refrigerator
Publication Date: 2026.03.17 BSH HAUSGERATE GMBH
  • US12578135B2 patent drawing
  • US12578135B2 patent drawing

AI summary

A method operates a household refrigerator that has an ice maker that produces and/or dispenses ice in an ice production mode. The household refrigerator can at least partially deactivate a sub-process of the ice production mode in dependence upon a user-defined deactivation criterion. A first operating process is provided which when executed generates a first noise emission that is lower than that of the sub-process. A user-specific quiet time interval of the ice maker is provided as a deactivation criterion. At least the at least one sub-process of the ice production mode is deactivated at least partially during the quiet time interval. The operation of the household refrigerator is coordinated such that the first operating process is executed at least temporarily during the quiet time interval.