Importance

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Abstract

Provided is a method of warning of an abnormal state of an air purifier of a respirator, in which when an abnormality of the air purifier occurs, colors, flickering intervals, and display patterns of light emitting diodes (LEDs) are differently output in such a way that an abnormal state such as a dead battery of the air purifier which purifies polluted external air and supplies the purified air to a worker, an error caused by a blockage of a filter unit due to foreign substances, an abnormality in a load rate of the filter unit, and an error, abnormality, failure and danger caused by the expiration of an operation time and a replacement of the filter unit is warned and at the same time informed to other workers who are working near the worker to prevent a dangerous situation in which the polluted external air which is not filtered and purified is inhaled by the worker through the respirator. A technical configuration for the method of warning of the abnormal state of the air purifier of the respirator includes the respirator a worker wears, the air purifier connected to the respirator through an air supply tube and including the filter unit to purify polluted external air flowing thereinto, and a control unit provided to be controllable in the air purifier, wherein an error, failure, and dangerous situation of the air purifier and the filter unit are warned and informed to other workers near the worker wearing the air purifier through an LED warning window.

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First Claim