| 摘要 |
A low noise and energy saving air vacuum cleaner by detecting the operation status of the cleaner to control the size of the electricity inputted to an air pump drive motor, or exercise the control of power delivery or power cut off; normal rated voltage being inputted when the cleaner is in normal working status; or the power outputted to the air pump drive motor being reduced or cut off when the cleaning tool of the cleaner clears away from its work area to render the cleaner in full load operation status as were a blower to increase both noise level and power consumption, or when the cleaning tool is blocked due to excessive packing against the work area for reduced noise level and energy saving.
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