silent vacuum cleaner

Abstract

The invention relates to a silent vacuum cleaner, which comprises a hollow shell, a fan arranged in the shell, an air outlet opened on the shell, and an air outlet channel formed between the fan and the air outlet, the air outlet A noise reduction device is arranged in the channel, and the noise reduction device includes a first partition and a second partition arranged around the fan, the first partition is located between the fan and the second partition, and the first partition A vortex cavity is formed between the fan and the first baffle and a buffer cavity is formed between the first baffle and the second baffle, and an opening for air flow from the vortex cavity to the buffer cavity is set on the first baffle. A plurality of micropores are provided on the second partition, and the airflow in the air outlet channel flows through the vortex cavity, the opening, the buffer cavity and the micropores in sequence. The object of the present invention is to provide a silent vacuum cleaner, which has low noise, little harm to the human body, high efficiency and quick dissipation of heat generated by the motor.

Description

technical field [0001] The invention relates to a silent vacuum cleaner, in particular to a vacuum cleaner with a sound-absorbing device regularly distributed with micropores. Background technique [0002] A vacuum cleaner is an appliance that uses suction to remove dirt, such as dust, from floors or carpets. In a vacuum cleaner, air laden with dirt passes through the interior of the vacuum cleaner and out of the vacuum cleaner through the air outlet. However, because the air is quickly sucked into the vacuum cleaner to generate a rapid airflow, the rapid airflow strongly collides with the internal parts of the vacuum cleaner, thus generating a lot of noise when the air passes through the interior of the vacuum cleaner, and this type of noise is usually high-frequency noise, which makes the use of Those who feel unbearable, endanger people's health, and will shorten the service life of the vacuum cleaner. [0003] In order to solve the above problems, in the prior art, spo...

AI Technical Summary

Problems solved by technology

However, because the air is quickly sucked into the vacuum cleaner to generate a rapid airflow, the rapid airflow strongly collides with the internal parts of the vacuum cleaner, thus generating a lot of noise when the air passes through the interior of the vacuum cleaner, and this type of noise is usually high-frequency noise, which makes the use of Those who feel unbearable, endanger people's health, and will shorten the service life of the vacuum cleaner

[0003]In order to solve the above problems, in the prior art, sponge is used to wrap around the motor or fan, which is actually a kind of impedance noise reduction, that is, it only blocks the airflow In a certain space, the airflow cannot be quickly dispersed and eliminated, and the airflow cannot be separated and smoothly discharged to the outside of the vacuum cleaner. The noise generated by the high-speed airflow still exists in a certain space inside the machine, which cannot effectively reduce the noise at all. , and will also add additional unfavorable factors to the machine itself, such as increasing the temperature of the motor of the machine, greatly reducing the flow and efficiency of the body itself, etc.

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