Evaporating set for a refrigerating appliance and a refrigerating appliance comprising said evaporating set

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Solution Overview

Problem

Existing refrigerating appliances require different evaporating sets with varying sizes and fixing elements to fit conduits of different widths, leading to increased complexity and cost in manufacturing and assembly, especially when larger conduits are involved, and the need for separate heating elements in these sets.

Innovation Solution

An evaporating set with a substantially flat evaporator and two fixing elements, incorporating a blocking element with a simple prism geometry that can connect to larger conduits, allowing the same heating element to be used across different sizes, and featuring a tubular electrical resistance for defrosting ice.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If different fixing elements of different sizes are used to adapt to conduits of different widths, then the evaporating set can be connected to opposite sides of conduits of various sizes, but the complexity of manufacturing and assembly increases and production costs rise

Engineering Contradiction:
Improveadaptability to different conduit sizesVSAvoidcomplexity of fixing elements
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing a single standardized fixing element that can be used across different conduit sizes. Instead of creating multiple specialized fixing elements for each conduit width, the invention uses one universal fixing element design that simplifies manufacturing while maintaining the ability to adapt to various conduit dimensions through the blocking element mechanism.

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

Solution Approach 2:

The patent applies segmentation by separating the fixing function from the space-filling function. The standardized fixing element handles the attachment task, while the blocking element (with simple prism geometry) handles the adaptation to different conduit sizes by occupying remaining space. This division allows each component to have a simple, optimized design.

Inventive Principle:
Principle #1Segmentation

2Length of stationary object

If bigger fixing elements are used for bigger conduits, then the evaporating set can be connected to larger conduits, but the heating element needs to be bigger too which increases cost and complexity

Engineering Contradiction:
Improvesize of fixing elementVSAvoidcomplexity of heating element
Core Design Contradiction:
Length of stationary objectVSDevice complexity

Solution Approach 1:

The patent applies universality by enabling the same heating element to be used in different conduit sizes. The standardized heating element works with the universal fixing element and blocking element combination, eliminating the need to create progressively larger heating elements for bigger conduits. This reduces both manufacturing complexity and costs.

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

3Reliability

If the heating element extends from the closest side of the fixing element to the inner wall of the conduit, then it can defrost the humidity that condenses and freezes in the evaporator, but in bigger conduits the heating element needs to be bigger to encompass the entire evaporator

Engineering Contradiction:
Improvedefrosting capabilityVSAvoidlength of heating element
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The patent introduces the blocking element as an intermediary that bridges the gap between the fixed heating element and the inner wall of larger conduits. The blocking element with prism geometry fills the remaining space, allowing the same heating element to effectively reach and defrost the evaporator in both small and large conduits without needing to be resized.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

This configuration simplifies and reduces the cost of manufacturing and assembly by enabling the same evaporating set to fit various conduit sizes, optimizes space usage, and maintains efficient heat exchange while allowing for homogeneous defrosting of ice accumulation.

Implementation Method 1

featureing a tubular electrical resistance for defrosting ice

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

evaporating set installable inside a conduit of a refrigerating appliance through which a process fluid to be cooled down can flow

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Data Source

PatentEP4575360A1Evaporating set for a refrigerating appliance and a refrigerating appliance comprising said evaporating set
Publication Date: 2025.06.25 BSH HAUSGERATE GMBH
  • EP4575360A1 patent drawingFigure 1
  • EP4575360A1 patent drawingFigure 1a~2
  • EP4575360A1 patent drawingFigure 3~4

AI summary

An evaporating set installable inside a conduit of a refrigerating appliance through which a process fluid to be cooled down can flow, which comprises a substantially flat evaporator and two fixing elements located on opposite sides of the evaporator, wherein the evaporating set is connectable to opposite sides of the interior of a first conduit, which comprises at least one blocking element, connectable to at least one of the fixing elements in such a manner that the evaporating set is connectable to opposite sides of the interior of a bigger second conduit than the first conduit.