Sorption cooling device

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Solution Overview

Problem

Conventional sorption cold devices face inefficiencies due to the need for separate throttling components, which are prone to pressure fluctuations and energy consumption, and often require pumps, leading to increased maintenance and energy usage.

Innovation Solution

The sorption cold device employs the connection means itself as a primary throttle, eliminating separate throttling components and optimizing pressure regulation, allowing for efficient operation without pumps and reduced energy consumption by arranging the sorption chamber directly between the evaporator and capacitor, with the capacitor positioned deeper than the evaporator.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stress or pressure

If separate throttling components (capillary tubes, expansion valves) are used to reduce pressure difference between capacitor and evaporator, then pressure regulation is achieved, but pressure losses increase and system complexity increases

Engineering Contradiction:
Improvepressure differenceVSAvoidpressure loss
Core Design Contradiction:
Stress or pressureVSLoss of energy

Solution Approach 1:

The patent merges the throttling function with the connection means itself. The connecting agent serving as the primary throttle device combines the functions of connection and pressure regulation into a single component, eliminating separate throttling components and reducing pressure losses associated with additional throttle organs.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The connection means is designed to perform multiple functions: it serves as both the connecting conduit between capacitor and evaporator, and as the primary throttling device. This multi-functionality eliminates the need for separate throttling components and reduces system complexity.

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

2Productivity

If pumps are used to promote refrigerant flow and media funding, then refrigerant circulation is improved, but energy consumption and maintenance requirements increase

Engineering Contradiction:
Improverefrigerant circulationVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The system uses the connecting agent as a self-regulating primary throttle that automatically controls refrigerant flow based on pressure differences without requiring external power or mechanical pumps. The refrigerant circulation is achieved through the inherent pressure-driven flow control of the connection means.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces mechanical pumps with a passive pressure-driven flow control system. The connecting agent serves as a primary throttle that regulates refrigerant flow through pressure differences alone, eliminating the need for mechanically moving components and pump-driven circulation.

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

3Ease of operation

If capacitor is arranged above evaporator to promote condensed refrigerant by gravity, then refrigerant flow is improved, but pressure backflow can occur and additional height arrangement is required

Engineering Contradiction:
Improverefrigerant flow promotionVSAvoidpressure stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The connecting agent acts as an intermediary between capacitor and evaporator, serving as both the flow path and the primary throttle. This intermediary function allows the system to maintain pressure stability while enabling refrigerant flow without requiring the capacitor to be positioned above the evaporator, preventing pressure backflow issues.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Reliability

If throttle devices (capillary tubes, expansion valves) are installed to prevent pressure back, then pressure stability is improved, but pressure losses increase and system complexity increases

Engineering Contradiction:
Improvepressure stabilityVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the pressure regulation and flow control functions into the connecting agent itself, which serves as the primary throttle. This merging eliminates the need for separate throttle devices and additional pressure control components, reducing system complexity while maintaining pressure stability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The connection means is designed to perform multiple functions including serving as the primary throttle device for pressure regulation. This multi-functionality eliminates the need for separate pressure control components and reduces the overall number of parts in the system.

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

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 enhances energy efficiency, reduces maintenance, and prevents pressure backflow issues, enabling stable and energy-efficient operation with improved refrigerant flow and heat transfer, while minimizing thermal losses.

Implementation Method 1

capillary tubes are used as a throttle, which reduce the print energy in the narrow cross -section through pressure losses

Methodology Applied
Scientific EffectPressure losses: Pressure Drop

Implementation Method 2

at least one sorption chamber (2), in which a sorption medium is arranged locally or completely

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Implementation Method 3

industrial thermally powered absorption and adsorption refrigeration systems

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 4

the condensing refrigerant current is partially condensed in the evaporator

Methodology Applied
Scientific EffectCondensation: Condensation

Implementation Method 5

at least one evaporator (1), in particular at least one direct evaporator, which is arranged inside the cooling space

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentEP3351873B1Sorption cooling device
Publication Date: 2022.12.21 COOLAR UG (BESCHRAENKTE HAFTUNG)
  • EP3351873B1 patent drawingFigure 1
  • EP3351873B1 patent drawingFigure 2
  • EP3351873B1 patent drawingFigure 3

AI summary

The invention relates to a sorption refrigeration device comprising at least one evaporator, one condenser and one sorption chamber.