PU filter

According to the filtration principle, air filters can be divided into several types: filtration type, centrifugal type, oil bath type, and composite type. The commonly used air filters in engines include inertia oil bath air filters, paper dry air filters, polyurethane filter air filters, and other types.
The inertia oil bath air filter has undergone three stages of filtration: inertia filtration, oil bath filtration, and filtration filtration. The latter two types of air filters are mainly filtered through the filter element filtration. Inertia oil bath air filters have the advantages of low intake resistance, adaptability to dusty and sandy working environments, and long service life. They were previously used on various models of car and tractor engines.
However, this type of air filter has low filtration efficiency, high weight, high cost, and inconvenient maintenance, and has gradually been phased out in automotive engines.
The filter element of the paper dry air filter is made of resin treated microporous filter paper. The filter paper is porous, loose, folded, and has a certain mechanical strength and water resistance. It has the advantages of high filtration efficiency, simple structure, light weight, low cost, and convenient maintenance, making it a widely used automotive air filter.
The polyurethane filter element of the air filter is made of soft, porous, sponge like polyurethane with strong adsorption capacity. This type of air filter has the advantages of paper dry air filters, but has low mechanical strength and is widely used in car engines. The disadvantage of the latter two types of air filters is their short service life and their unreliable operation in harsh environmental conditions.
Various air filters have their own advantages and disadvantages, but inevitably there is a contradiction between the intake volume and filtration efficiency. With the in-depth research on air filters, the requirements for air filters are also increasing. Some new types of air filters have emerged, such as fiber filter air filters, composite filter material air filters, silencing air filters, constant temperature air filters, etc., to meet the needs of engine operation.

One of the key advantages of the PU filter is its ability to capture particles down to 0.3 microns in size, which is significantly smaller than the size of most common airborne contaminants. This level of filtration efficiency makes the PU filter an excellent choice for use in cleanrooms, hospitals, and other environments where high levels of air quality are required.

In addition to its exceptional filtration capabilities, the PU filter is also designed for ease of use and maintenance. The filter can be easily cleaned using water or a mild detergent, and it does not require any special tools or equipment for installation or replacement.

Overall, the PU filter is a versatile and reliable solution for improving indoor air quality in a variety of settings. Its advanced filtration technology, durable construction, and easy maintenance make it a smart investment for anyone looking to improve their breathing environment. Whether you're dealing with allergies, asthma, or simply want to enjoy cleaner air at home or work, the PU filter is an excellent choice.