Refrigeration Control Unit Configuration for Multi-Device Parameter Setup

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Solution Overview

Problem

Existing refrigeration system configuration methods require specialized knowledge and skills, leading to potential incorrect configurations due to individual device parameter settings, especially for new or infrequent operators.

Innovation Solution

A control unit method that allows selecting a primary device for configuration, providing valid parameters, and automatically configuring other devices based on stored data, with manual override options for operators to ensure correct operation without requiring knowledge of all device parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If individual configuration of operating parameters for each device is performed, then the operator has full control over each device parameter, but the configuration becomes complex and error-prone requiring specialized knowledge

Engineering Contradiction:
Improveease of configurationVSAvoidconfiguration complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The configuration process is segmented into two distinct modes: automatic configuration mode where the control unit autonomously determines parameters for multiple devices, and manual configuration mode where operators can individually adjust specific parameters. This segmentation allows operators to choose the appropriate level of involvement based on their expertise and the situation, reducing overall configuration complexity while maintaining control when needed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The control unit performs self-service by automatically determining operating parameters for multiple devices based on stored data and inter-device relationships. The system independently analyzes the refrigeration cycle, identifies appropriate parameter settings, and configures devices without requiring operator intervention for each parameter, thereby simplifying the configuration process and reducing errors.

Inventive Principle:
Principle #25Self-service

2Productivity

If automatic configuration of multiple devices is performed based on one device configuration, then configuration speed increases and operator knowledge requirements decrease, but risk of incorrect configuration increases

Engineering Contradiction:
Improveconfiguration speedVSAvoidconfiguration accuracy
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system incorporates feedback mechanisms where the control unit continuously monitors the refrigeration system operation and compares actual performance against the configured parameters. The system can detect configuration errors through feedback from sensors and system performance data, allowing it to identify and correct incorrect automatic configurations, thereby maintaining reliability while preserving configuration speed.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The control unit performs preliminary actions by pre-storing valid operating parameter sets and inter-device relationship data in its memory. Before actual configuration occurs, the system has already prepared multiple validated parameter combinations and relationship rules, enabling it to quickly and accurately configure multiple devices based on pre-validated data rather than calculating parameters in real-time, thus ensuring both speed and accuracy.

Inventive Principle:
Principle #10Preliminary action

3Manufacturing precision

If comprehensive validation of all device parameters is performed, then configuration accuracy improves, but configuration time increases

Engineering Contradiction:
Improveconfiguration precisionVSAvoidconfiguration time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The system applies partial validation by focusing validation efforts on critical parameters and inter-device relationships that have the greatest impact on system performance. Rather than equally validating every single parameter, the control unit prioritizes validation of key parameters based on their importance to system operation, achieving sufficient configuration precision while reducing overall validation time through selective rather than comprehensive checking.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentEP2817685B1Method for configuring a refrigeration system
Publication Date: 2016.04.20 DANFOSS AS
  • EP2817685B1 patent drawingFigure 1
  • EP2817685B1 patent drawingFigure 2
  • EP2817685B1 patent drawingFigure 3

AI summary

The invention relates to a method for configuring, on a control unit, operating parameters of a plurality of devices of a refrigeration system. A user selects on the control unit, among the plurality of devices of the refrigeration system, a first device to configure. Information of valid configurable operating parameters of the first device is provided on the control unit. The user selects at least one of the valid configurable operating parameters of the first device, thereby configuring the first device. Information stored about operating parameters of other devices of the refrigeration system, based on the configuration of the first device, is then provided on the control unit. Finally, the user confirms, on the control unit, one or more operating parameters of one or more of the other devices, thereby configuring the one or more other devices. The invention also relates to a control unit and a refrigeration system.