IT Cabinet Passive Cooling Using Peltier Elements and Heat Pipes
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Solution Overview
Problem
Existing solutions for cooling IT, EDP, network, and telecommunications systems in cabinets are inefficient, noisy, and require significant space, while also lacking effective physical protection against dust, moisture, and mechanical attempts.
Innovation Solution
A cabinet design that incorporates passive cooling using a Peltier element and heat tubes (Heat Pipes) without external rotating parts, combined with inner cooling structures and insulation walls to manage heat efficiently and minimize noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If active cooling with external fans is used, then cooling efficiency is improved, but noise and maintenance requirements increase
Solution Approach 1:
The patent replaces the mechanical fan-based active cooling system with a passive cooling system using Peltier elements and heat pipes. The Peltier elements (electrocaloric effect) and heat pipes (thermal conduction and phase change) eliminate the need for rotating mechanical parts, thereby eliminating noise generation while maintaining cooling efficiency.
Solution Approach 2:
The passive cooling system operates without external power sources or moving parts. The Peltier elements and heat pipes self-regulate heat transfer from the cabinet interior to the exterior, providing autonomous cooling operation that reduces both noise and maintenance requirements.
2Temperature
If insulation walls are used, then heat dissipation to outside is reduced, but cooling efficiency inside is improved
Solution Approach 1:
The patent applies different thermal properties to different parts of the cabinet structure. The walls are made insulating to prevent heat ingress, while specific localized areas (cooling structures on the exterior) are designed with high thermal conductivity to facilitate heat dissipation. This creates a thermal gradient where the interior is well-insulated but heat can be efficiently rejected at designated external points.
Solution Approach 2:
The heat pipes serve as intermediary elements that bridge the insulating wall structure and the external cooling surfaces. They conduct heat through the insulation barrier to external fin structures where dissipation occurs, allowing the walls to remain insulating while enabling controlled heat rejection pathways.
3Object-generated harmful factors
If passive cooling without external fans is used, then noise is reduced, but cooling capability may be limited
Solution Approach 1:
The patent changes the operational parameters of the cooling system by using electrically-driven Peltier elements instead of mechanically-driven fans. The Peltier elements can be controlled through electrical parameters (current, voltage) to adjust cooling output, providing variable cooling capability without mechanical complexity or noise.
Solution Approach 2:
The cooling system combines multiple mechanisms and materials: Peltier elements (electrocaloric effect), heat pipes (phase change and thermal conduction), and extended surface fins (convective heat transfer). This composite approach multiplies cooling effectiveness, enabling sufficient cooling capability without requiring high-power fans or complex mechanical systems.
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 achieves efficient and low-noise cooling, reduces maintenance requirements, and provides effective physical protection against environmental hazards, ensuring optimal operating conditions for IT systems.
Implementation Method 1
at least one Peltier element with a warm side and a cold side is arranged in or on the body
Implementation Method 2
the warm side is functionally connected to at least one external cooling structure arranged on the outside of the body via at least one heat-conducting heat pipe
Implementation Method 3
at least one wall is designed as an insulating wall. This particularly includes walls that have at least one layer of insulating material
Data Source
Figure 1~3
Figure 4~5
AI summary
The invention relates to a cabinet (10) for installing IT, EDP, network and/or telecommunications systems, comprising a body (12) and at least one closable opening (20) for installing and servicing systems that can be mounted within the body (12), wherein passive cooling takes place without a fan arranged on the outside of the body. In order to passively cool, at least one Peltier element (60) having a hot side and a cold side is only arranged in or on the body (12), and wherein the hot side is functionally connected via at least one heat-conducting heat pipe (64) to at least one external cooling structure (56) arranged on the outside of the body (12).