Blowing device for ventilator

Abstract

The present invention relates to the technical field of medical respiratory equipment, in particular to an air blowing device for a ventilator, comprising a first housing provided with an air inlet, a second housing fixedly connected to the first housing, and the first housing and The second housing forms an annular accommodation chamber, and the annular accommodation chamber is provided with an air outlet; the annular accommodation chamber is provided with an impeller and a sound insulation board, and the impeller is installed on the rotating shaft and driven by a motor; the first housing and the sound insulation board form a first air chamber, The impeller is located in the first air chamber, the sound insulation board and the second housing form the second air chamber, and the air outlet is located in the second air chamber; there is a gap between the outer edge of the sound insulation board and the first housing. The tuyere enters the first air chamber, enters the second air chamber through the gap under the action of the impeller, and finally flows out from the air outlet. The air blowing device of the ventilator uses a sound insulation board to divide the air chamber into a first air chamber and a second air chamber, and the noise in the two isolated air chambers has less mutual interference and is easy to eliminate.

Description

technical field [0001] The invention relates to the technical field of medical breathing equipment, in particular to a blowing device of a breathing machine. Background technique [0002] As a device with artificial ventilation function, ventilator has been widely used in the treatment of respiratory failure, sleep apnea hypopnea syndrome and other diseases caused by various reasons, and it occupies a very important position in the field of modern medicine. In the field of non-invasive ventilators, as people pay more attention to respiratory therapy, the performance requirements of ventilators are also higher. Among them, the two indicators that users can easily perceive are radiated noise and conducted noise. These two indicators directly affect whether users can fall asleep, especially when they are just used, and can be used as a basis for judging whether users are willing to accept non-invasive and non-breathing treatment for a long time. [0003] The noise source of th...

AI Technical Summary

Problems solved by technology

[0003] The noise source of the non-invasive ventilator is mainly the blower device. People usually use the method of adding sound-absorbing cotton in the non-invasive ventilator to eliminate the radiation noise, but the effect is not obvious; and in terms of noise elimination, since there is no uniform standard requirement, People tend to ignore conducted noise, but it is the most easily perceived in user experience

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