Blower device for breathing machine

Abstract

The invention relates to the technical field of medical treatment breathing equipment, in particular to a blower device for a breathing machine. The blower device comprises a first casing provided with an air inlet and a second casing fixedly connected with the first casing. The first casing and the second casing form an annular accommodating cavity, and the annular accommodating cavity is provided with an air outlet. An impeller and a sound insulation plate are arranged in the annular accommodating cavity, the impeller is installed on a rotating shaft and driven by a motor. The first casing and the sound insulation plate form a first air chamber, the impeller is located in the first air chamber, the sound insulation plate and the second casing form a second air chamber, and the air outlet is located in the second air chamber. A gap is reserved between the outer edge of the sound insulation plate and the first casing. During operation, gas enters the first air chamber through the air inlet and enters the second air chamber through a gap under the action of the impeller, and finally the gas flows out of the air outlet. According to the blower device for the breathing machine, the sound insulation plate is adopted to divide an air chamber into the first air chamber and the second air chamber, mutual interference of noises of the two separated air chambers is less, and the noises are eliminated easily.

Description

technical field [0001] The invention relates to the technical field of medical breathing equipment, in particular to an air blowing device for a ventilator. 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 getting higher and higher. Among them, the two indicators that users are most likely to perceive are radiated noise and conducted noise. These two indicators directly affect whether the user can fall asleep, especially at the beginning of use, and can be used as the basis for judging whether the user is willing to accept non-invasive and non-breathing therapy for a long time. [00...

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

Images