The utility model relates to the technical field of electromagnetic valves, in particular to an oxygen concentrator electromagnetic valve.

Background technology:

Oxygen is an essential substance for maintaining human life. However, in certain special circumstances, people have to face environments lacking oxygen or require higher concentrations of oxygen. Based on this demand, oxygen production equipment has emerged. People's demand for oxygen is generally divided into two categories: for correcting pathological hypoxia, the use of oxygen for treating diseases is called oxygen therapy, and emergency oxygen therapy for rescuing critically ill patients is also called oxygen infusion first aid; The use of oxygen to correct physiological hypoxia, enhance physical fitness, prevent diseases, and improve work and learning efficiency is called oxygen health care. There are three main oxygen production processes used for oxygen therapy and oxygen health care: chemical reagent method, cryogenic method, and pressure swing adsorption method. The electromagnetic valve of an oxygen concentrator is an indispensable part of the oxygen concentrator, and its operating capacity directly determines the oxygen production capacity of the entire oxygen concentrator. Currently, when the solenoid valve pilot head component and the moving iron core are driven by the electromagnetic component to move, the movement is unstable, which will lead to unstable output of oxygen each time and cannot meet the needs of oxygen inhalation personnel. Moreover, the metal collision between the moving iron core and the holding chamber will generate significant noise, Causing serious noise pollution to the surrounding environment and affecting the resting environment of oxygen users.

The Chinese patent (application number 03255648.9) discloses a diaphragm type solenoid valve, which uses the air source generated by the oxygen production equipment to input the air inlet, and utilizes pressure difference to interact with the diaphragm connected to the valve stem, achieving the switching of the main valve gas pipeline. However, this type of solenoid valve pilot mechanism has a large volume, high manufacturing cost, occupies a large space, is inconvenient to install, and the electromagnetic coil has high power consumption, which is not conducive to energy conservation and environmental protection.