Cleaner and suction device
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Solution Overview
Problem
Existing cleaner designs fail to efficiently cool motors and prevent moisture fromstaining from flowing into a space in which a motor and/or a motor driver is located, and a cleaner including the same.
Innovation Solution
A cleaner including a main body case with a partition guide and seal to separate suction and cooling air paths, and a suction device with a motor and cooling fan to improve cooling and prevent moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single flow path is used for both suction and cooling, then the device complexity is reduced, but the motor cooling efficiency deteriorates and moisture can ingress into the motor space
Solution Approach 1:
The patent divides the flow path into two separate channels: a first flow path for suction air passing through the dust collector, and a second flow path for cooling air passing through the motor. This segmentation prevents moisture-laden suction air from contacting the motor while allowing dedicated cooling airflow, resolving the contradiction between simplified structure and effective cooling with moisture protection
Solution Approach 2:
The patent introduces a partition guide as an intermediary structure that physically separates the two flow paths within the housing. This partition guide acts as a mediator that prevents cross-contamination between suction air and cooling air while maintaining structural organization, enabling both flow paths to coexist without interference
2Productivity
If suction air containing moisture flows through the motor space, then the suction function is maintained, but the motor and motor driver are damaged by moisture ingress
Solution Approach 1:
The patent segments the airflow into distinct pathways: suction air travels through the dust collector and exits via the first outlet, while cooling air passes through the motor via the second flow path and exits through the second outlet. This segmentation ensures that moisture-containing suction air never contacts the motor, protecting reliability while maintaining suction productivity
Solution Approach 2:
The patent extracts the cooling function from the suction flow path by creating a separate second flow path that draws ambient air through the motor for cooling purposes. This extraction allows the motor to be cooled by clean ambient air rather than moisture-laden suction air, preventing moisture damage while maintaining suction performance through the separate first flow path
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
Efficient cooling of the motor and motor driver, and prevention of moisture ingress, enhancing the output range and performance of the suction device.
Implementation Method 1
a cooling fan in the main body case and configured to be rotatable by the motor to move air along a second flow path extending from the second inlet to the second outlet
Implementation Method 2
a suction fan in the main body case and configured to be rotatable by the motor to move air along a first flow path extending from the first inlet to the first outlet
Implementation Method 3
a seal coupled to the partition guide and in contact with an inner wall of the main body case
Data Source
AI summary
Disclosed herein are a cleaner and a suction device. The cleaner includes a main body case, a motor, a suction fan, a cooling fan, a motor housing and a seal. The main body case includes a first inlet, a first outlet, a second inlet and a second outlet. The suction fan moves air along a first flow path extending from the first inlet to the first outlet. The cooling fan moves air along a second flow path extending from the second inlet to the second outlet. The motor housing supports the motor and includes a partition guide. The seal is coupled to the above partition guide and in contact with an inner wall of the main body case. The partition guide and the seal together partition the first flow path from the second flow path.