Water Bath Heating Plate Control for Histology Section Temperature

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Solution Overview

Problem

Existing devices for heating paraffin sections in histologic laboratories have limited operational reliability and convenience due to the inability to precisely control temperature, often relying on multistage switches and lacking temperature displays.

Innovation Solution

The device features temperature-controllable electric heating plates at the bottom of the trough, with a temperature sensor to maintain the desired water temperature, and optional heating elements on the sides, along with a user-friendly interface including a touch display and independent control of heating surfaces, ensuring precise temperature control and convenience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If multistage switches are used for temperature control, then the device structure is simple, but the temperature control precision deteriorates

Engineering Contradiction:
Improvedevice structureVSAvoidtemperature control precision
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent replaces mechanical multistage switches with an electronic temperature control system that includes a temperature sensor, control unit, and electric heating element. This substitution eliminates the imprecision of mechanical switching while maintaining relatively simple device structure, thereby resolving the contradiction between structural simplicity and temperature control precision.

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

2Device complexity

If no temperature display is provided, then the device complexity is reduced, but the ease of operation deteriorates

Engineering Contradiction:
Improvedevice structureVSAvoidoperating convenience
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The patent incorporates a temperature display that provides real-time feedback to the user about the current water temperature. This feedback mechanism allows operators to monitor temperature without adding significant complexity to the device structure, thereby improving ease of operation while maintaining acceptable structural simplicity.

Inventive Principle:
Principle #23Feedback

3Device complexity

If heating plates are glued with adhesive, then the device structure is simplified, but the heat conduction efficiency deteriorates

Engineering Contradiction:
Improvedevice structureVSAvoidheat conduction efficiency
Core Design Contradiction:
Device complexityVSLoss of energy

Solution Approach 1:

The patent uses a composite bonding approach that combines adhesive with highly conductive thermal interface material or direct metal-to-metal contact areas. This composite structure maintains the simplicity of glued assembly while significantly improving heat conduction efficiency by reducing thermal resistance at the heating plate-to-trough interface.

Inventive Principle:
Principle #40Composite materials

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 ensures consistent temperature control, enhanced operational reliability, and improved user convenience by allowing precise temperature adjustment and monitoring, regardless of ambient conditions or usage duration.

Implementation Method 1

electric heating includes at least one heating plate allocated to the bottom of the trough

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

the water temperature is determined by means of a temperature sensor and heating regulated accordingly

Methodology Applied
Scientific EffectTemperature sensing: Thermocouple

Data Source

PatentUS8642930B2Device for heating an object by means of a water bath
Publication Date: 2014.02.04 PFM MEDICAL AG
  • US8642930B2 patent drawing
  • US8642930B2 patent drawing
  • US8642930B2 patent drawing

AI summary

The invention relates to a device for heating an object by means of a water bath, in particular for strips of pathological or histological sections, before a microscopic examination, comprising a housing (1) and a trough (2) inserted in the housing (1), wherein the water bath is heated by means of an electrical heater, characterized in that the electrical heater comprises at least one hotplate (4) provided on the base (3) of the trough (2).