Suction Head Brush Cooling Circuit for Integrated Motor Overheating
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Solution Overview
Problem
Existing suction heads with rotating brushes often experience insufficient cooling of the drive engine, leading to reduced reliability and performance.
Innovation Solution
The suction head incorporates an air circulation cooling circuit where air is sucked from outside the rotary brush and circulated through a cooling circuit that flows inside the drive engine and between the engine compartment and the brush body, optimizing heat exchange and cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the drive motor is located in the brush body, then the structure is compact and integrated, but the drive motor overheats due to insufficient cooling
Solution Approach 1:
The cooling circuit is divided into two distinct portions: a first portion that cools the drive motor internally through channels in the motor housing, and a second portion that cools the brush body externally. This segmentation allows targeted cooling of different thermal zones, effectively managing the temperature of the integrated drive motor while maintaining structural compactness.
Solution Approach 2:
Air acts as an intermediary cooling medium that is drawn from the suction chamber and routed through the cooling circuit. The air absorbs heat from the drive motor and brush body, transporting thermal energy away from the integrated components. This intermediary approach enables cooling without requiring direct thermal contact with external cooling systems, preserving the compact integrated structure.
2Reliability
If air circulation cooling is implemented, then drive motor cooling is improved, but the cooling may be insufficient in certain operating configurations
Solution Approach 1:
The cooling function is merged with the suction chamber airflow system. Air that would otherwise be wasted is captured and redirected through the cooling circuit, combining the suction function with the cooling function. This dual-use approach ensures reliable cooling of the drive motor while utilizing existing system resources, preventing overheating in various operating configurations.
Solution Approach 2:
Cooling air is drawn from the suction chamber before the air reaches the brush rolling surface, pre-cooling the air before it enters the cooling circuit. This preliminary action ensures that the cooling medium is at an optimal temperature for heat absorption, enhancing the effectiveness of the cooling system and ensuring reliable drive motor temperature control across different operating conditions.
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 effective cooling of the drive engine, enhancing its reliability and maintaining optimal performance by utilizing the temperature difference between the drive engine and the engine compartment.
Implementation Method 1
air is drawn into the air circulation cooling circuit from outside the rotating brush and is circulated in the air circulation cooling circuit... air flows at least in part inside the drive motor
Implementation Method 2
the air, circulated in the first circuit portion, flows at least in part inside the drive motor... optimized heat exchange between the drive motor and the air flow
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The suction head comprises a main body (4); a rotating brush (11) comprising a brush body (12); a motor compartment (19) housed in a motor housing (21) delimited by the brush body (12); a drive motor (17) housed in the motor compartment (19) and configured to drive the brush body (12) in rotation around an axis of rotation; and an air circulation cooling circuit (41) fluidly connected to the suction chamber (9) and comprising a first circuit portion (41.1) delimited in part by the drive motor (17) and a second circuit portion (41.2) delimited in part by the motor compartment (19) and the brush body (12) and located downstream of the first circuit portion (41.1).