A portable ventilator

Abstract

A portable ventilator, comprising a casing, the casing is provided with a fan box (101), a shut-off device (108) and a control device (113), and the fan (8) is installed on the fan box (101) through a noise reduction device. ), the air outlet of the fan is connected to the internal breathing pipe (107), and the internal breathing pipe (107) is provided with a shut-off device (108). device (113), the casing is also provided with a humidifying device (106), the air outlet of the intercepting device (108) is connected to the humidifying device (106) through an internal breathing tube (107), and the air outlet of the humidifying device is connected to Breathing tube (104) and mask (105). The ventilator has low noise, which is convenient for accurate detection of breathing gas parameters, and can realize 360° anti-backflow.

Description

technical field [0001] The invention relates to the field of ventilators, in particular to a portable ventilator. Background technique [0002] Home sleep ventilators are mainly used in personal homes, sleep centers and small clinics, mainly for patients with apnea syndrome. The ventilator relies on the fan to pressurize the gas in the pipeline. During the working process, the fan will inevitably make noise. Because the patient's tolerance threshold for sound is lowered, and the single repeated stimulation of these sounds to the patient makes the patient indistinguishable. Day and night, so the adverse stimulation of the ventilator noise to the patient is very large. How to control the noise to a minimum and not affect the patient's sleep is a major issue that every ventilator manufacturer has to face. [0003] Fan noise is mainly divided into two types, one is the wind whistle generated by the rapid rotation of the fan and the friction between the blades and the air, and ...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there are three main types of control for fan noise: 1. Wrap the fan in a thick box with sound-insulating material (generally EVA material), but this requires higher requirements for the sound-insulating material, and the volume of the box is generally All of them require relatively large requirements, which is not conducive to cost control and ventilator volume control. Because home ventilators are mainly used in homes and sleep centers, for convenience, they are generally not made too large.

2. Create a soundproof environment through the gas path structure. This method is low in cost, but it has extremely high structural requirements and is generally difficult to achieve

3. Increase the number of rigid connection parts to fix the fan by adding special protection treatment, reduce the vibration of the fan and reduce the noise, but this solution also has the problems of increased volume and increased cost

The air blown out by the fan is not a stable airflow, and usually has a large disturbance. If the airflow blown by the fan is directly collected, the obtained data will not be stable, which will have a great impact on the algorithms in the software. At the same time, it will also make the patient feel unwell

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