Portable ventilator

Abstract

The invention discloses a portable ventilator. The portable ventilator comprises a shell, a draught fan box (101), a cut-off device (108) and a control device (113) are arranged in the shell, a draught fan (8) is mounted in the draught fan box (101) through a noise reducing device, an air outlet of the draught fan is connected with an interior breathing tube (107), the cut-off device (108) is arranged on the interior breathing tube (107), a sensor is arranged in the cut-off device (108), the sensor is connected with the control device (113), a humidifying device (106) is arranged in the shell, an air outlet of the cut-off device (108) is connected with the humidifying device (106) through the interior breathing tube (107), and the air outlet of the humidifying device is connected with a breathing tube (104) and a mask (105). The noise of the ventilator is low, and the breathing gas parameters can be precisely detected for realizing anti-backflow for 360 degrees.

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 individual families, 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 and repeated stimulation of these sounds to the patient makes the patient unable to distinguish between Day and night, so the adverse stimulation of the ventilator noise to the patient is great. How to control the noise to a minimum and not affect the sleep of patients is a major issue that every ventilator manufacturer must face. [0003] Fan noise is mainly divided into two types, one is the whistling sound caused by the rapid rotation of the fan and the friction between the blades an...

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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