Suction Head Provided With A Brush Motor Cooling Circuit
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Solution Overview
Problem
Existing suction heads with rotating brushes face challenges in effectively cooling the drive motor, leading to potential overheating and reduced reliability.
Innovation Solution
The suction head incorporates an air-cooling circuit with a specific configuration that directs air flow first inside the drive motor and then along the outer surface of the motor compartment, optimizing heat exchange and cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drive motor is located in the brush body, then the cleaning performance is improved, but the motor temperature increases leading to reduced reliability
Solution Approach 1:
The air-cooling circuit is divided into two distinct portions: a first circuit portion for cooling the drive motor internally, and a second circuit portion for cooling the motor compartment externally. This segmentation allows targeted cooling of different thermal zones, effectively managing the temperature of the drive motor while maintaining its integrated location in the brush body for optimal cleaning performance.
Solution Approach 2:
Air is introduced as an intermediary cooling medium through the air-cooling circuit. The air flows through the first circuit portion to absorb heat from the drive motor, then through the second circuit portion to dissipate heat from the motor compartment, acting as a thermal mediator between the motor and the external environment.
2Device complexity
If a simple air-cooling circuit is used, then the device complexity is reduced, but the cooling efficiency is insufficient
Solution Approach 1:
The air-cooling circuit is segmented into two functional portions: the first circuit portion that directs air flow inside the drive motor, and the second circuit portion that directs air flow along the outer surface of the motor compartment. This segmentation enhances cooling efficiency without requiring complex external cooling systems, maintaining simplicity while improving thermal management.
Solution Approach 2:
The air-cooling circuit enables continuous cooling action by establishing a complete air flow path that continuously draws air through the first circuit portion, across the drive motor, then through the second circuit portion, and finally exhausts to the atmosphere. This continuous circulation ensures sustained cooling efficiency throughout motor operation.
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 optimized cooling of the drive motor by leveraging the significant temperature difference, thereby enhancing the reliability and performance of the suction head.
Implementation Method 1
the air, circulated in the first circuit portion, flows at least partially inside the drive motor, and so that, the air, circulated in the second circuit portion, flows at least partially along an outer surface of the motor compartment
Data Source
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 in rotation the brush body (12) about an axis of rotation; and an air-cooling circuit (41) fluidly connected to the suction chamber (9) and including a first circuit portion (41.1) partially delimited by the drive motor (17) and a second circuit portion (41.2) partially delimited by the motor compartment (19) and the brush body (12) and located downstream of the first circuit portion (41.1).