A charcoal exhaust filter is used to protect the motor and fan of the cleaning equipment in the kitchen. The membrane cassette protects the unit motor and turbine blades from damage and wear as a result of contamination with solid dust and grease particles and gaseous impurities. A high-quality cleaning element extends the operating time of the hood motor by 18%.
The design and principle of operation of the carbon filter
Several stages of purification free the air from kitchen aromas and impurities. When the membrane filler in the element is clogged with grease and dust, the link must be replaced with a new component. As part of the exhaust system, sensors are used that determine the degree of pollution and signal the need for replacement.
The filter works according to the following principle:
- The air flow penetrates through a dense diffuser impregnated with charcoal solution or containing active carbon. Some of the dirt accumulates in the fabric.
- The partially treated air flows into the cassette where the pellets are located. Activated carbon traps remaining impurities and absorbs harsh odors.
The design also determines the cleaning efficiency and influences the pressure loss in the nozzle. The finely dispersed filling creates additional resistance to flow, and the large granules make the jets easier to move. Shirring the membrane increases the contact area with the carbon surface and makes cleaning more efficient.
The material of the filter frame is plastic or metal. The cassette of polymeric material can be round, square or rectangular, the gap is filled with granules or a powdery substance. The high-density fabric partition is impregnated with activated carbon or contains material particles. The elements are disposable, they cannot be cleaned or washed, they can only be changed.
What is a filter for?
The purpose of the cleaning cassettes is to absorb gas molecules inside the porous filler. Activated carbon efficiently removes semi-volatile and volatile organic substances with significant molecular weight. The degree of porosity of the filler determines the efficiency of the work and the time of operation before fouling.
The equipment above the gas stove is additionally supplied with mechanical pre-cleaning units, which retain the particulates. Fatty impurities that have passed through the first threshold accumulate in the carbon filter and bring the replacement time closer. If the hood is operated in flow ventilation mode, the charcoal filters do not need to be inserted.
Users can make a charcoal air filter with their own hands using building materials and outdated frames that need to be restored, sometimes plastic pipes are used.
Operating procedure:
- Take 2 pieces of sewer pipe with a diameter of 75 (length 37 cm) and 100 mm (length 35 cm).
- Holes with a diameter of 5 - 7 mm are drilled in the walls of a wide pipe (over the entire area). Similarly, on the surface of a piece that is narrower, holes are made with a size of 12 - 14 mm.
- Sections of the body are tightly wrapped on the outside with agrofiber, the ends are sewn with a nylon thread, a painting net is applied over the layer, and connected with plastic clamps.
- The pipes are inserted into each other, a sewer plug is put on the end of the wide one, fixed with glue or sealant. Coal with a fraction of 5.5 mm is poured between the walls.
AR-V coal is sold in 25 kg bags. The reverse side of the structure is protected with an adhesive adapter. It is connected to the hood with a protrusion of a narrow pipe, which protrudes 20 mm.
Positive and negative properties
The main advantage is excellent work results and high-quality cleaning of the air flow. On the positive side, when replacing, you can easily remove and put a new element without the involvement of a specialist. Changing the cartridge takes little time and the hood is practically not inoperative.
Domestic and foreign companies produce various models designed for all kinds of hoods. Coal cassettes are installed not only in kitchen equipment, cleaning links are used in supply and exhaust ventilation systems in private buildings and industrial facilities.
It is possible to choose a budget option or install effective protection with a high-quality filter element. Smells entering the ventilation shaft of a multi-storey building will not irritate the residents of neighboring apartments.
Charcoal cleaners are disposable, unlike aluminum cassettes, which can be washed and reused.
How to install a charcoal filter in a cooker hood
To install the filter, you need to read the instructions, which describe the process in detail. There are some nuances that you should pay attention to. For example, a cartridge placed on the wrong side will not purify the air.
Standard instruction:
- the filter is unpacked and the fixing bracket is fixed;
- the door is folded back and the element that catches the fat is removed;
- a carbon component is placed in its place in the unit and fastened with a screw;
- the grease filter is put in place, the flap closes.
Some hoods contain two carbon cleaners in the design, located on either side of the engine. In this case, a similar process is performed twice.
Rules for choosing a charcoal filter for the hood
Before purchasing a hood, you need to consult with a consultant about the availability of replacement cartridges on the market. When buying cassettes, pay attention to the manufacturer's recommendations. The charcoal filters are manufactured to suit many types of hoods. But some models only fit into one type of equipment and are not suitable for another. This often applies to new filters that have just been launched on the market.
Sometimes users insert soft fabric elements into the hood, which are of low cost. A gross violation leads to premature wear of the motor and fan. The hood's passport contains matching parameters that must be taken into account when choosing a cleaning cartridge.
Popular manufacturers
Firms that produce kitchen cleaning hoods produce different types of charcoal filters. Companies offer devices for typical rectangular hoods and for corner and wall options. Many models are equipped with grease-trapping nets, and include several charcoal cleaners.
In such equipment, the performance of the filter corresponds to the performance of the fan or is slightly higher than this characteristic. Well-known manufacturers always indicate the life of coal barriers, which must be taken into account when installing them. If the hood is capable of handling 250 m3 of air, and the filter can pass 500 m3, the purifier must be changed after six months, and not three months, as indicated in the instructions.
The products of the Greek company Elikor, the Spanish Cata, the Italian Elika are sold in almost all stores. Their high quality and affordable cost have made them popular.The carbon pads are changed every 4 to 6 months, even if the hood is used with a constant load. Good work is shown in the fact that there is no grease on the adjacent walls and objects.
Folter
The company has its own production base for the production of a wide range of coal cleaners. The entire offered model range complies with the accepted standards defined in GOST and technical conditions. Most of the samples are universal and are suitable for equipment from different companies.
The kit includes materials:
- ion-exchange resins in the form of synthetic compounds of macroporous structure, providing air purification;
- chemisorbents that absorb organic matter on their own surface;
- Activated carbon.
Folter products work reliably and effectively for a long time, conveniently changed after the end of their service life. The average duration of operation without loss of quality is 5 months. The models FyaS-S-K and FyaK-SP are popular, which efficiently clean the supply streams from odors. The average price for a product is 2 thousand rubles.
Crown
The German manufacturer produces high quality kitchen hoods. Each unit is equipped with a Krona filter element that cleans the air from exhaust gases and fatty impurities. The hoods body is made hermetically sealed, so the streams go directly to the cleaning barrier.
Filters are installed in boxes of industrial and household ventilation, in production shops they remove 100% toxic impurities, unpleasant odors, gaseous pollution and chemically aggressive vapors.
The filter element contains:
- activated carbon of stone, impregnated, peat, coconut origin;
- silver ions;
- compressed sorbent granules.
Compact devices are made of tubular, panel type. They guarantee efficient cleaning while keeping pressure losses to a minimum. No carbon granules are ejected from the rigid membranes. The cost of a set of two cassettes for the hood is 1590 rubles. Spare parts are not included in the sales package and must be purchased as needed.
The service life is about 100 - 125 hours with constant use. Models are equipped with an indicator that shows the degree of contamination and the need for replacement. Compatible with units SLIM 600 inox MB, Janna, Kamilla (1 motor), Elma, Freya, Betty, Helen, Jasmin push button, Ester, Mara push button, Sabrina.
Jet air
The products of the Italian company are in demand due to their energy efficiency and high performance. The filter elements are suitable for units manufactured by Jet Air and are used in other ventilation equipment. The frame material is metal or plastic. It is recommended to change the filters within the prescribed period, since the accumulated dirt can subsequently be sucked back into the kitchen area.
Popular models are in demand:
- F00169 / 1S. The sample has an ergonomic design, it is combined with many types of cleaning units for the kitchen. The cost of the kit is 570 rubles.
- F00307. The device works for 4 - 6 months, it is easy and convenient to install and remove the charcoal filter for the hood with your own hands.
The company produces cleaning elements for kitchen appliances and for installation in the filter box of the ventilation system (at the beginning or at the end). In such devices, durable granules are used that do not erode during operation. The elements process the supply and recirculation flow, reduce the level of gaseous impurities and pungent odors.
Hansa
Hansa, an Italian manufacturer, produces high quality carbon cleaned cassettes. Filters do not belong to universal models, therefore, before purchasing, you need to check with a consultant for the suitability of a specific hood. The cost of one product is 1600 rubles.The high price is due to the high-quality materials used as part of the element.
The most popular among buyers is the KF17203 model. The sample with a diameter of 175 mm is suitable for Hansa hoods OSP622H, OTP616WH, OSP622WH, OTP627WH, OTP6221WGH, OTP616IH, OTP6651BGH, OTP627IH. The service life is 6 - 12 months if the exhaust equipment is switched on regularly.
As a membrane, corrugated polyester is used, in which particles of activated carbon are embedded. The barrier collects solid impurities on the surface, and the inclusions are cleaned of gaseous substances and unpleasant odors. For non-standard equipment, the company makes custom filters.
