Permeate Cooling for Dialysis Electrical Components
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Solution Overview
Problem
Dialysis machines with compact designs face thermal management challenges, particularly during hot-water disinfection, as high temperatures can exceed the safe operating limits of electrical components, and traditional cooling methods like fans increase costs, dust intake, and noise, while being impractical in high external temperatures.
Innovation Solution
A cooling apparatus using centrally supplied permeate (pure water) to cool electrical components, with heat sinks in thermal contact, allowing for efficient heat dissipation and independent operation from hot-water disinfection processes, reducing the risk of overheating and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional cooling methods like fans are used to cool electrical components, then cooling effect is achieved, but production costs increase, dust intake increases, and noise increases
Solution Approach 1:
The patent introduces a cooling fluid (permeate) as an intermediary substance to transfer heat from electrical components to a heat exchanger. This fluid-based cooling intermediary replaces direct air cooling with fans, achieving thermal management while avoiding the drawbacks of fan-based systems including dust intake, noise, and higher production costs.
Solution Approach 2:
The patent employs a hydraulic cooling system where permeate (a fluid) is circulated through channels in the housing to absorb and remove heat from electrical components. This hydraulic approach leverages fluid circulation and heat exchange principles to achieve efficient cooling without mechanical moving parts like fans, thereby reducing cost, noise, and dust issues.
2Volume of moving object
If the machine housing is compact to save space, then space efficiency is improved, but thermal management becomes more difficult during hot-water disinfection
Solution Approach 1:
The patent merges the cooling function with the existing machine housing structure by integrating cooling channels directly into the housing. This consolidation allows the compact housing to simultaneously serve as structural support and thermal management system, maintaining small volume while achieving effective heat dissipation during hot-water disinfection operations.
Solution Approach 2:
The patent utilizes the three-dimensional space within the compact housing by incorporating internal cooling channels and heat exchange surfaces. This dimensional approach allows heat dissipation pathways to be integrated within the existing volume rather than requiring additional external space, thus maintaining compactness while improving thermal management capability.
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
The solution effectively maintains electrical components within safe temperature ranges, enhances reliability, reduces production costs, and mitigates noise and dust issues, ensuring reliable operation even at high external temperatures.
Implementation Method 1
A cooling apparatus using centrally supplied permeate (pure water) to cool electrical components, with heat sinks in thermal contact, allowing for efficient heat dissipation
Implementation Method 2
heat sinks in thermal contact
Data Source
AI summary
The invention relates to a device for extracorporeal blood treatment, having a hydraulic system B which comprises multiple lines (7), (9) for providing dialysate for a dialyser (3) and having a control system (15) which comprises multiple electrical components (17A), (17B), (17C). The invention also relates to a method for operating a device for extracorporeal blood treatment which has a hydraulic system which comprises multiple lines for providing dialysate for a dialyser and a control system which comprises multiple electrical components, wherein the dialysate is produced using a liquid supplied to the device for extracorporeal blood treatment. The extracorporeal blood treatment device is a blood treatment device which has a central connection (11) to allow a liquid, in particular permeate (pure water), to be supplied to the machine. The blood treatment device is characterised by a cooling apparatus (19) for cooling at least one of the electrical components (17A), (17B), (17C) of the control system (15), said cooling apparatus using the liquid, in particular permeate (pure water), supplied centrally to the device to dissipate heat from the electrical components. The cooling apparatus (19) has at least one heat sink (21) which can be cooled with a liquid and is in thermal contact with the at least one electrical component (17A), (17B), (17C), wherein the cooling apparatus (19) has at least one inlet (22A) which is fluid-connected to the connection (11) for the inflow of a liquid and at least one outlet (22B) which is fluid-connected to a drain (10), (31).