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Non-compressed air mixing system of intelligent respirator

A technology of mixing compressed air and oxygen, which is applied in the direction of respirators, etc., can solve the problems of uncontrollable oxygen concentration, large volume, and loud noise, and achieve the effects of reduced power consumption, high precision, and low power consumption

Inactive Publication Date: 2006-08-16
江苏蓝韵凯泰医疗设备有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art, such as large power consumption, large volume, large noise, uncontrollable oxygen concentration, etc., and provide a proportional control technology using a combination of Venturi and low-power turbines, combined with precision flow sensors and proportional control The device controls the pressure of oxygen, venturi-driven gas (oxygen) and air inlet turbine through an intelligent control system, and realizes an air-oxygen mixing system that precisely controls the output gas flow and oxygen concentration of the ventilator.

Method used

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  • Non-compressed air mixing system of intelligent respirator

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[0013] Such as figure 1 The air-oxygen mixing system shown is to connect the one-way valve 6 and the flow sensor 5 at the air inlet of Venturi 7, and then connect with the electronically controlled turbocharging device 4, and connect the flow sensor 9 at the outlet of Venturi 7 ; The high-pressure oxygen is also connected with the Venturi 7 high-pressure input port through the electronically controlled proportional valve 2. The flow sensor 5 detects the intake air flow, the flow sensor 9 detects the mixed gas flow, calculates the oxygen concentration flowing through the flow sensor 9 through the microcomputer control system 10, and then controls the flow of the electronically controlled proportional valve 2 and the pressure of the turbocharger 4 respectively , so that the output oxygen concentration is lower than 30%. Another path of pure oxygen passes through the electronically controlled proportional valve 1 , passes through the flow sensor 3 , and then mixes with the mixed...

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Abstract

An air-oxygen mixing system for the intelligent respiratory machine without compressed air features that the one-way valve, flow sensor and turbine pressurizer are sequentially installed at the air inlet of Venturi device, the electric proportional valve is connected to the high-pressure inlet of Venturi device for controlling the flow of high-pressure oxygen, and another oxygen channel with electric proportional valve and flow sensor is mixed with the mixed gas from Venturi device in the air mixer for supplying the air-oxygen mixture to patient.

Description

Technical field [0001] The invention relates to a medical ventilator, in particular to an air-oxygen mixing system that adds a turbocharger device to the air intake port of the Venturi device of the venturi device to precisely control the output oxygen flow rate and oxygen concentration of the ventilator. Background technique [0002] There are three kinds of traditional air-oxygen mixers: one is the two-way high-pressure gas provided by the central oxygen supply and medical air compressor, which is output to the patient after air-oxygen mixing and flow adjustment. Disadvantages such as high consumption, need to remove water, high cost, and large volume lead to a large volume of the ventilator system. [0003] The second is the frictionless piston (or turbine) technology adopted abroad, which is mixed with oxygen and delivered to the patient. This device requires the piston valve (or turbine) to provide greater power, otherwise it will not meet the ventilation requirements. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M16/12A61M16/10
Inventor 张培林向越宏孔德宏李增胡二钱方志明
Owner 江苏蓝韵凯泰医疗设备有限公司
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