Laboratory Vibratory Mill Heat Transfer Element

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Solution Overview

Problem

Existing laboratory vibrating mills face challenges in temperature control of grinding bowls, as they often require direct contact with temperature control media, leading to inefficiencies and potential contamination, and lack the ability to adapt heat energy transfer to specific demands during grinding processes.

Innovation Solution

A laboratory vibrating mill design featuring a heat transfer element connected to the temperature control line, allowing for temperature control via a medium channel without direct contact between the grinding bowl and the temperature control medium, enabling the use of various media and precise energy adaptation through adjustable volume flow and temperature of the medium.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If direct contact between grinding bowl and temperature control medium is used, then cooling effect is maximized, but media loss and contamination occur

Engineering Contradiction:

Improvecooling effectVSAvoidmedia loss

Core Design Contradiction:

TemperatureVSLoss of substance

Solution Approach 1:

The patent introduces a heat transfer element as an intermediary component between the temperature control medium and the grinding bowl. The temperature control medium flows through channels in the heat transfer element, which is in thermal contact with the grinding bowl holder, thereby transferring heat without direct contact between the medium and the grinding bowl, preventing contamination and media loss

Inventive Principle:

Principle #24Intermediary (Mediator)

2Temperature

If flooding with liquid nitrogen is used, then maximum cooling is achieved, but energy waste and media consumption increase

Engineering Contradiction:

Improvecooling intensityVSAvoidenergy waste

Core Design Contradiction:

TemperatureVSLoss of energy

Solution Approach 1:

The patent enables dynamic adjustment of temperature control parameters including the flow rate and temperature of the medium supplied to the heat transfer element. This allows the cooling intensity to be adapted to the actual thermal demand during different grinding operations, avoiding excessive energy consumption while maintaining effective temperature control

Inventive Principle:

Principle #35Parameter changes

3Temperature

If direct contact with temperature control medium is used, then simple cooling is achieved, but contamination risk increases

Engineering Contradiction:

Improvetemperature controlVSAvoidcontamination

Core Design Contradiction:

TemperatureVSObject-affected harmful factors

Solution Approach 1:

The heat transfer element serves as a physical barrier and thermal intermediary, allowing heat transfer from the temperature control medium to the grinding bowl through controlled thermal conduction while preventing direct contact between the medium and the grinding bowl, thus eliminating contamination risk

Inventive Principle:

Principle #24Intermediary (Mediator)

4Device complexity

If fixed cooling system is used, then simple structure is maintained, but adaptability to different thermal demands is reduced

Engineering Contradiction:

Improvestructure simplicityVSAvoidenergy adaptation

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent transforms the fixed cooling system into a dynamic one by incorporating adjustable parameters for the temperature control medium flow rate and temperature. This allows the system to adapt its cooling capacity to match the actual thermal demands of different grinding processes while maintaining a relatively simple overall structure

Inventive Principle:

Principle #15Dynamics

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 design prevents media loss, allows for precise temperature control with different media, and adapts energy transfer to the actual demand, enhancing efficiency and preventing contamination by maintaining a sealed environment for temperature control.

Implementation Method 1

temperature control of a grinding bowl (2, 3) held on and/or in the grinding bowl holder (7, 8) is effected by heat transfer between the temperature control medium conducted in the medium channel (23) and the grinding bowl (2, 3) via a wall of the heat transfer element (20)

Methodology Applied

Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 2

heat transfer between the temperature control medium conducted in the medium channel and the grinding bowl via a wall of the heat transfer element

Methodology Applied

Scientific EffectHeat transfer: Convection

Data Source

PatentUS12121904B2Laboratory vibratory mill

Publication Date: 2024.10.22 RETSCH GMBH & CO KG

AI summary

The invention illustrates and describes a laboratory vibratory mill with at least one milling beaker holder which is mounted so as to be capable of oscillating, for at least one milling beaker, and with a temperature control device for controlling the temperature of the milling beaker by feeding in and/or carrying away a liquid or gaseous temperature control medium via at least one temperature control line to the milling beaker holder. According to the invention there is provision that the milling beaker holder has at least one heat transfer element which is connected to the temperature control line, wherein the heat transfer element has at least one medium duct for feeding through the temperature control medium, and wherein the temperature control of a milling beaker which is secured to and/or in the milling beaker holder is carried out by transferring heat between the temperature control medium conducted in the medium duct and the milling beaker via a wall of the heat transfer element.