Introduction of HEPA filters

HEPA filter In modern society, the importance of air quality is becoming more and more important. Especially in some special occasions, such as pharmaceutical production environment, clean room, etc., the cleanliness of the air is required. As an important part of the air purification system, the high-efficiency filter plays a vital role.

A high-efficiency filter is a device that effectively removes fine particles from the air. It is designed with special materials and structures to physically intercept greater than 05 microns of particles. These particles include harmful substances such as dust, pollen, bacteria, viruses, etc.

HEPA filters typically consist of multiple layers of fiber webs or membranes that have small pore sizes that block the passage of tiny particles. At the same time, the HEPA filter is also equipped with equipment such as fans and air supply outlets to ensure air flow and deliver filtered clean air into the room.

The working principle of the HEPA filter can be summarized in the following steps:

The air enters the HEPA filter, and after the pretreatment of the primary filter, it enters the main part of the HEPA filter.

In HEPA filters, air passes through the pores of the fiber web or membrane, and tiny particles are blocked.

The filtered clean air is fed into the room to maintain the cleanliness of the indoor air.

Leak detection of HEPA filters is an important part of ensuring that they work properly. Leak detection can identify possible defects in HEPA filters and their installation, and take appropriate measures to fix them. Commonly used leak detection methods include differential pressure method, smoke method, etc.

The differential pressure method is a simple and effective method of leak detection. By measuring the change in differential pressure on both sides of the HEPA filter, it is possible to determine whether there is an air leak. If the differential pressure varies greatly, there may be an air leak.

The smoke method is a visual leak detection method. By spraying smoke into the air supply outlet of the HEPA filter and observing whether smoke is leaking from other places, it is possible to determine whether there is an air leak.