Control Cabinet Drawer Cooling via Segmented Air Ducts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing control cabinet designs for industrial robots and frequency converters face challenges with inefficient cooling, ergonomic issues during maintenance, and increased risk of tipping due to vertical installation, which complicates heat dissipation and replacement processes.
Innovation Solution
A rack-based control cabinet with modular, slide-in control units featuring internal heat sinks and controlled fans, allowing for horizontal insertion and secure sealing, along with independent air ducts for each module to ensure effective cooling and easy replacement, while maintaining a compact and scalable structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If frequency converters are installed vertically in control cabinets using through-hole design, then heat dissipation is improved, but the control cabinet height increases and tipping risk increases
Solution Approach 1:
The control cabinet is divided into multiple horizontal compartments (first compartment for fresh air, second compartment for exhaust air, third compartment for control units) with partition walls separating them. This segmentation allows horizontal arrangement of frequency converters instead of vertical installation, reducing cabinet height while maintaining effective heat dissipation through dedicated air flow paths in each compartment.
2Temperature
If frequency converters are installed vertically in control cabinets, then heat dissipation is improved, but replacement and maintenance become more difficult
Solution Approach 1:
The control cabinet uses a compartmentalized design with the third compartment specifically dedicated to housing control units in drawers. This segmentation allows front-accessible horizontal installation, making replacement and maintenance easier compared to vertical through-hole installation requiring rear access.
Solution Approach 2:
The control units are installed in drawers that can be easily pulled out and pushed in horizontally. This dynamic, movable drawer design facilitates simple replacement and maintenance operations without requiring complex disassembly or difficult access, contrasting with fixed vertical installations.
3Ease of repair
If modular slide-in control units are used, then ease of replacement is improved, but sealing reliability may be compromised
Solution Approach 1:
The drawer and control unit are equipped with pre-designed sealing elements (sealing lips on drawers, counter-flanges on control units) that automatically engage when the control unit is inserted into the drawer. This preliminary preparation of sealing interfaces ensures reliable sealing is achieved automatically during the simple slide-in operation, maintaining both ease of replacement and sealing reliability.
4Temperature
If through-hole design is used for heat dissipation, then cooling efficiency is improved, but cabinet structure complexity increases
Solution Approach 1:
The cabinet design merges the heat dissipation function with the compartmentalization structure. The partition walls separating the first (fresh air), second (exhaust air), and third (control units) compartments also serve as the structural framework for air flow management. Fresh air ducts and exhaust air ducts are integrated into this compartmental structure, eliminating the need for separate through-hole installations and reducing overall structural complexity while maintaining cooling efficiency.
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 solution provides efficient cooling, simplifies maintenance, reduces the risk of tipping, and allows for flexible integration of control modules in existing cabinet concepts, ensuring reliable and ergonomic operation.
Implementation Method 1
a cooling device for cooling electrical components of a robot control device by means of a cooling air flow generated by a fan
Implementation Method 2
a heat sink wall which fluidically separates the first receiving space from the second receiving space
Implementation Method 3
cooling wall projections forming at least one flow channel
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a control cabinet for at least one electrical drive controller (2), having: a control cabinet housing (3); a first cabinet compartment (4.1) which is formed in the control cabinet housing (3) and has at least one inlet opening (5) for fresh air, at least one first transfer opening (6.1, 6.2, 6.3), and a fresh air duct (7) flow-connecting the at least one inlet opening (5) to the at least one first transfer opening (6.1, 6.2, 6.3); a second cabinet compartment (4.2) which is formed in the control cabinet housing (3) and has at least one outlet opening (8) for exhaust air, at least one second transfer opening (9.1, 9.2, 9.3), and an exhaust air duct (10) flow-connecting the at least one outlet opening (8) to the at least one second transfer opening (9.1, 9.2, 9.3); and a third cabinet compartment (4.3) which is formed in the control cabinet housing (3) and is sealed off in terms of flow from the first cabinet compartment (4.1), the second cabinet compartment (4.2) and the environment (12) outside the control cabinet (1); wherein the control cabinet housing (3) has a partition (13) which delimits the third cabinet compartment (4.3) in terms of flow from the first cabinet compartment (4.1) and the second cabinet compartment (4.2) and has the at least one first transfer opening (6.1, 6.2, 6.3) and the at least one second transfer opening (9.1, 9.2, 9.3), and the third cabinet compartment (4.3) is in the form of a rack with at least one drawer (14.1, 14.2, 14.3), wherein each drawer (14.1, 14.2, 14.3) is designed to receive an insertable control device (2).