Фільтрувальний респіратор з примусовою подачею повітря

Abstract

The filter respirator with forced air supply is an effective means of individual protection of respiratory organs (MIPRO) of users under especially dangerous conditions with air saturated with harmful substances while it is impossible to use other types of protective equipment. To solve this problem, methods of rational solution of inventive problems have been used. In particular, the approach of the finished object has been used (the object does not change), in which one feature is amplified; and the choice of one object from several objects has been applied, i.e. one search concept from several has been worked out. The design of a filter respirator with forced air supply has been developed, which differs from the known analogues by the presence of a unit for controlling the volume and the quality of purified air inhaled, with regard to the frequency and depth of the user breathing at exercise. It has been established that the volume of air flow that enters the submask spaceand gets into the user's respiratory organs is linearly dependent on the speed of the fan impeller, but when the resistance to air flow through the filters is more than 7-7,5 mBar, the dependence becomes nonlinear; it changing with the nature of physical activity. The practical value involves the development of an effective design of a filter respirator with forced air supply, the algorithm for its operation, that makes it possible to control the volume and the quality of purified air inhaled and takes into account the frequency and depth of the user breathing at exercise; the proposed algorithm also makes it possible to control the protective properties of the filter elements of the device at work