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Application of air filters in various occasions

Views: 0     Author: Site Editor     Publish Time: 2022-02-24      Origin: Site

Junior high-efficiency air filter

Junior high-efficiency air filterRefers to the air filtration device, generally used in clean workshops, cleansing plants, laboratory and clean rooms, or for dustproof for electronic mechanical communication equipment. There is an initial filter, a medium-role filter, an efficient filter and a sub-efficacy model. Various models have different standards and performance.


◆ Rationalize filter efficiency at all levels

In general, the last level filter determines the degree of air purification, and the upstream level filters mainly protect, protect the lower airborne filter to extend its service life, or protect the air conditioning system to ensure its normal operation.

In the air conditioning design, you should first determine the efficiency of the last level filter according to the user's cleanup requirements, then select the protective filter, if this level filter needs to be protected, it is necessary to add a filter in its upper wind. Protect the filter collective \"pre-filter \".

The efficiency of each of the filters should be properly matched. If the efficiency specification of the neighbor two-stage filter is too large, the previous stage does not reach the role of the post-protected level; if the two levels are not large, the post-level burden is too small.

The ultimate life of the high-efficiency filter of the clean room is long, the most important factor affecting the service life is the pros and cons of the pre-filter.

When using \"g ~ f ~ h ~ u \" efficiency specification classification, it is convenient to estimate the efficiency of the filter required. In G2 ~ H12, a first-level filter is set every 2 to 4. For example: G4 → F7 → H10, where the end H10 (sub-efficient) filter determines the cleaning level of the air supply, the F7 protection H10, G4 protects F7. Clean chamber end high efficiency (HEPA) filter should be protected by a filter that is not less than f8 before the filter; the F9 ~ H11 filter can be used before the ultra-efficient (ULPA) filter. The central air conditioner itself should be protected by a filter that is not less than F5.

In the windless, low-contaminated area, the F7 filter can not be provided before the F7 filter; in the urban central air conditioning system, G3 ~ F6 is a common primary filter.

What is the efficiency level pre-filter to protect the post-first level filter, which requires designers and field engineers to use environmental, spare parts, operating energy consumption, maintenance costs and other factors and other factors.


◆ Selection reference for typical venue filters

Use place

Main filter efficiency

Common filter element

special requirements

illustrate

Main filter in ordinary central air conditioner

F5 ~ F7

Bag, no block filter

Reasonable filtration efficiency

Hygiene, protect the interior decoration, protect air conditioning system

Pre-filter in ordinary central air conditioners

G3 ~ F5

Various cheap and easy to use filters

High capacity capacity, supply is guaranteed

Protect air conditioning systems to protect the next level filter

High-speed public place central air conditioning

F7

Bag, no block filter

Prevent air inlet black stains, prevent indoor decoration

Airport Terminal

F7

Bag, no block filter

Passengers first impression

School, kindergarten

F7

Bag, no block filter

Fire prevention

Special safety consideration

Clinic and ward

F7 ~ F8

Bag, no block filter

Prevent cross-infection

Museum, library

F7

Bag, no block filter

Protect treasure

Audiovisual studio

F7

Bag, no block filter

Protect optical equipment and products

100,000 level, 10,000-level non-uniform flow clean room

Hepa

Have a separator, no block high-efficiency filter

Place-by-step test, no flammable material

Filter is installed in an efficient air supply

Level 100 clean room

Hepa
ULPA

Have a separator, no block high-efficiency filter

After leaving the factory, after blocking inspection

Clean room end

General cleansing room pre-filtered

F8 ~ h10

Bag, no block, a partition filter

Ensure the normal service life of the end filter

Chip Factory 10, 1 clean factory

ULPA

No barrier ULPA filter

Scanning test, uniform flow rate, no volatile

Today's filter for filter performance requirements

Chip factory 10, level 1 clean factory pre-filter

Hepa

No separator, partition filter

High wind speed

Ensure the service life of the end filter is \"a lifetime \"

Pharmaceutical industry 300,000 level clean factory

F8 ~ h10
Hepa

Bag, no block, a partition filter

Filter does not contain nutrients

Terminal filter can be located in the central air conditioner

Negative cleansing room exhaust filter

Hepa

No separator, partition filter

reliable

Prohibition of dangerous goods emissions

Car coated pipeline main filter

G4 ~ F7

Bag filter

No silicone, no hair, flame retardant

Meet the paint no defect, protect the current material

Car paint flow water line main filter

F6 ~ F7

High temperature resistant partition filter

Silicone

Process requirement

High requirements static spray production workshop

F7 ~ F8

Bag, no block filter

No silicone, no hair

Guarantee appearance

Nuclear power plant exhaust

Hepa

Have a separator, no barrier filter

Fire prevention, impact, specialized agency certification

-

Machine room, switch station, central control room with central air conditioning

F5 ~ F7

Bag, no block filter

-

Prevent heat dissipation due to dust and circuit failure

Cabinet air-conditioned machine room, switch station, central control room

G3 ~ F5

Easy flat plate filter

-

Because of the site restriction, the cabinet air conditioner is difficult to adopt other forms of filters

Chemical fiber drawing process

F8

Bag filter

-

Prevent broken wire

Spinning shop

G4 ~ F7

Bag filter, electrostatic filter

-

Prevent \"Coal Sums\"

food industry

F7

Bag, no block filter

No nutrient

Production environment

Clean workbench, wind shower room

Hepa

Have a separator, no block high-efficiency filter

-

-

Rolled steel main motor

F7

Bag filter

Flame retardant

Prevent motor failure caused by dust

Current air conditioner

F7

Self-cleaning filter, bag filter

-

Domestic tobacco industry currently pop self-cleaning filtering device

Home central air conditioner

G3 ~ G4

Flat filter

Cheap, beautiful

Premium

Ordinary household air conditioner


Nylon net filter

Can be cleaned

Blocking fiber and rough dust

Sand area pre-filtered

Inertial dust removing device, water bath dust removing device, roller blind filter

Clear large particle dust, work only when weird

Gas turbine with centrifugal air compressor

F7 ~ F8

No separator, bag type, partition filter, self-cleaning filter

Anti-shock, flame retardant

Prevent internal fouling, wear, corrosion

Axial air compressor

F5 ~ F7

No separator, bag filter

Anti-shock, flame retardant

Prevent blade wear

Reciprocal air compressor, internal combustion engine

G3 ~ F5

Bag filter, filter, flat filter

Anti-impact, overtield resistance

Prevent cylinder wear

High-level car air conditioner

F7

No barrier filter element

Dust, flour pollen

High-end household vacuum cleaner

F7
Hepa

No barrier filter element

Strong, resistant to water

Prevent drainous secondary pollution

Clean room vacuum cleaner

Hepa

No barrier filter element

Strong, resistant to water

Prevent drainous secondary pollution

Household air purifier

F7 ~ f9
Hepa

Cylindrical and square non-barrier filter elements

Cheap, beautiful

Premium

Gas mask

Hepa

No barrier filter element

Temperature, water resistant

Combination of activated carbon

Note: \"Main Filter \" refers to the filter, or a filter for the specified part


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