Built-in hoods with carbon filter without outlet

Devices that purify the air in our kitchens, hoods, are presented in a huge range. Meanwhile, the main components included in their composition are the same - this is the motor, the catching plane, the control panel and the filter for the kitchen hood.

Classification of modern filters

When the first kitchen hoods were created, they were not equipped with filters. In fact, such structures were a hinged metal umbrella, which had an axial fan. It was connected to rectangular channels. Such a device removed grease and soot from the street quite well, but the surface was covered with a sticky layer of dirt. For this reason, it had to be washed constantly.

Modern models do not have these disadvantages. Built-in, suspended and island hoods are now equipped with various filters. These include:

• cartridges - carbon cassette inserts;
• fatty elements based on paper and acrylic, which can be changed;
• gratings made of metal and capable of trapping grease particles;
• combined types of elements for one-time use.

In total, there are 2 types of kitchen hoods: circulation and flow modifications.

The latter discharge air into the cavity of the ventilation shaft. They can also move it directly outside. Some models are not equipped with an outlet, but direct the purified air flow back into the room. In accordance with the manufacturer, the hood can be equipped with one or more types of filters. Most of those on the market only have a grease trap. The circulation version contains grease inserts and a charcoal filter for the kitchen hood.

What do you need to know before you start cleaning?

Simply wiping the outer part of the body with the buttons does not mean washing the hood. The device will have to be partially disassembled, and in order to do this correctly, you will need to look at the instructions, which indicate all the design nuances and disassembly rules for a specific model. In general terms, the process of preparing the hood for cleaning is as follows:

• de-energize the device;
• Unclip the latches of the top panel (if equipped) and remove the grease filter. It captures grease particles well and does not need to be replaced - only regular cleaning. The grease filter is usually made of steel or aluminum. The steel option is the best. There are disposable grease filters that are used in the most compact hoods. They are made on the basis of paper, acrylic, padding polyester or non-woven fabric, and need to be replaced every 3-4 months, they cannot be washed;
• remove the carbon filter that is equipped with circulation-type hoods. The carbon filter cannot be washed - it needs to be replaced as it becomes dirty. On average, it is changed every 4-6 months.

Flow-type hoods remove drawn-in air through a ventilation duct to the street. A grease filter is necessary to protect the motor. In this type of hood, cleaning the ventilation duct is sometimes required. Circulating hoods draw in air, clean it and send it back to the kitchen. The cleaner the carbon filter, the more efficient the process, so you should not forget to change it.

What and how to clean the kitchen hood from grease? It all depends on the degree and age of the pollution. Someone will get by with little blood, i.e. the most common detergents, while others will have to work hard using aggressive chemicals.

Description of grease traps

There are several groups of devices for filtering fumes in the kitchen. The principle of their operation is based on the absorption of fat and soot particles. For this purpose, the composition contains synthetic fabric.

It is able to perfectly clean the air flows that the fan sucks in.

Grease trap groups:

• flat elements for single use;
• aluminum mesh, divided into many small cells and encased in a rigid frame;
• similar products, but made of stainless steel.

Replacement models resemble a thin carpet in appearance. They are usually used in small built-in hoods. Synthetic fiber or paper is used for cleaning here. In the first case, it can be padding polyester, acrylic or non-woven fabric. This product can last a maximum of 3 months, but with careful handling. This means that the device should operate no more than 2 hours per day.

Aluminum models

The grilles, made of aluminum or stainless steel, are adjusted to the dimensions of the household appliance. They are good because they are suitable for long-term use. They operate on a simple principle: the smallest mesh cells, which are placed in a frame, trap flying particles.

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There are several advantages and disadvantages of such products. For example, a disposable grease filter cleans the air well, which protects the surface of the duct and fan from sticky grease and plaque. The downside is that it doesn't last long. The problem of removing any contaminants can only be solved by replacement; washing and drying the material does not bring any benefit. The cost of the purifier depends on its size. The minimum price is 150 rubles.

Replacement Parts

Replaceable inserts are sometimes suitable for universal use, that is, they can be installed in any ventilation devices where the use of these elements is provided. Long service life is typical for stainless steel and aluminum components.

According to the technology, they can be cleaned with water with the addition of various detergent compounds. But when compared with the replacement version, a new catcher with a mesh structure will cost at least 2 times more. At the same time, it is characterized by a crude air purification system. After about a year of use, drops of fat cover the surface of the case. You can also notice them on the outlet channel and internal cavities of the device.

How to install a new replacement unit

The most important recommendation when installing new cassettes or replacing old ones is to carefully read the manufacturer’s instructions. It indicates the procedure and some important nuances that relate to specific models.

For example, a simple carbon cartridge installed on the wrong side will not work correctly, and instead of clean air you will get wasted energy.

The instructions are often presented in the form of a plan - a step-by-step description of actions, sometimes accompanied by pictures. Responsible manufacturers complete their products with discs with video instructions or simply provide a link to the manufacturer’s website, where you can find all the information you need.

We offer examples of instructions that will help you when installing filters for various models.

Option number 1 . Replacement filter for the Shindo Aliot PS - there is only one replaceable element, it looks like a rectangular panel.

Carbon cartridge

Its task is fundamentally different from the purpose of fat filters. Here a plastic cartridge is taken, into which activated carbon granules are placed. This component cleans the air from any harmful fumes and removes the smallest particles of fat and soot.

What does this mean in reality:

• with its help it is possible to get rid of exhaust gases and food odors;
• after treatment with an absorbent, air can again be supplied to the kitchen;
• products can be used for fine air purification, which in direct-flow devices represents the next stage of its processing.

Carbon powder cannot be cleaned after use. To restore the functions of the element, the cassette is changed. Cartridges are usually used in island models that do not provide for air exhaust to the street.

In appearance, carbon-filled filters are created in the form of disposable cassettes or unique mats. The cartridge can be round or rectangular in shape, and a hole is made in its center. Carbon elements can last up to six months. This period is reduced by 2 times if a person uses it intensively. There are cheap products, the cost of which starts from 200 rubles, as well as expensive ones - you will have to pay several thousand for them.

It should be taken into account that the first enemy of the filter sorbent is the humidity that is present in the air. To increase the life of the charcoal cartridge, you should ventilate the kitchen after cooking. You should also leave the fan on for 15 minutes to dry.

What is it needed for?

The use of different types of hoods is based on air purification. The purpose of a charcoal filter for the kitchen is to purify the air passing through it from unpleasant odors of any type. Externally, it is a round or rectangular cassette in a plastic case. It is less common to purchase products made from synthetic material.

These products differ in appearance. For example, if it is a cartridge type filter, there is an absorbent inside it. When it is a textile, the active substance is an impregnation. It is worth noting that products can be combined. This allows you to create an option with a greater degree of air protection from hot steam and toxic impurities.

The main component of the filter element is activated carbon granules or carbon powder. This absorbent is distinguished by its ability to absorb and retain various impurities from the air. This is a tool for fine air purification, which is enough for 3-4 months of regular use. It is installed immediately behind the grease filter, since first the hood cleaning system must get rid of fat particles, and only then from odors and other contaminants.

The carbon filter makes the hood design reliable in operation, providing a favorable indoor microclimate. In addition to the fact that due to the use of a carbon cartridge in the hood, it is possible to significantly reduce the level of air pollution, this affects the extension of the resource and operation of equipment and interior items. Along with air purification, fumes, dust and other microparticles in the air will not settle on all objects in the room. This type of cartridge is used for recirculation systems; it allows you to increase the efficiency of the hood. It can differ in density, and unlike its fat counterpart, it is of a replaceable type.

Combined elements

The product is made in 2 layers and has a flat shape. Activated carbon granules and synthetic fiber are placed inside it. The carbon layer is designed to neutralize harmful gases, and the synthetic padding promotes the effective absorption of fat. It is located below.

For hoods, a universal carbon filter for single-use hoods is suitable. It can be placed on replaceable flat-shaped filters. Subject to daily use, the service life of the product is no more than 3 months. Compared to fabric representatives, their price is about 30% more.

Recommendations for replacement

Combined and disposable products cannot be restored by washing or drying. The contaminated component must be replaced when certain signs are detected. First of all, this is a change in the color of the indicator mark. The same can be said about the strip on the filter, which usually takes on a red tint. It is applied by the manufacturer. Also a sign that indicates the need for replacement is a decrease in traction.

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At the same time, the fan noise increases. In the end, you need to buy new filters if the life of the cartridge has expired. Some brands have special differential pressure sensors. They emit special signals as soon as the carbon cassette or filter cloth becomes dirty. Attempting to wash the filter will not give any result.

It is impossible to remove the fat absorbed by the fibers. The synthetic filler will become clogged again after washing, and this will happen much faster than with a new product.

First, you should purchase air purification elements for a specific hood. In this regard, preference should be given to parts manufactured by the same brand as the household appliances. In other cases, this point does not play a special role. If you cannot find an element of suitable size, buy a universal filter to absorb fat. It is suitable for use on most hood models.

Aluminum mesh can be cut to size and installed into an old frame. You can make a carbon filter for your hood with your own hands, but to do this you need to have a certain level of professionalism.

Interesting facts about activated carbon

This is not a medical page, but it will be interesting to know about the component. Extraction comes from ordinary charcoal. By combining positively charged electrons with carbon in the formula, we get the finished product. It is used in different areas of life.

Carbon filters are made from a natural component obtained after burning hardwood, walnut or coconut shells and other carbon materials. Carbon is subjected to special chemical treatment and, as a result, the product becomes porous, subject to adsorption and other reactions.

Did you know that the specific surface area of ​​one gram of activated carbon is approximately 500 m² ? This figure can be compared to a tenth of a football field. The cassettes are filled with this activated sorbent and closed on the outside with a fine mesh. It traps mechanical contaminants.

Charcoal filter in package

Such filters are not used in industry. They are more efficient in the home. In small rooms and kitchens, filters reveal their usefulness, uniqueness and productivity.

Many buyers are thinking about buying a universal filter. It's comfortable. There is no need to look for a suitable model, which may not be available in the nearest store. Elikor carbon filters are in particular demand . In addition to the fact that they fit most hoods, they are also inexpensive.

Of course, universal models will be inferior to the original filters, but if you urgently need to replace an element and don’t spend a lot of money, this one will do just fine.

Removal and installation

First, disconnect the device from the power supply by removing the plug from the socket. This precaution will not be superfluous, since when disassembling certain models there is a risk of hitting the fan start button. Following this, the built-in panel is pushed back to the end.

At the bottom of the device there are latches or clamps made of plastic. They are designed to hold the filter frame. They need to be unlocked and the part removed. Disconnect the used filter and then replace it with a new one. The frame must be washed with detergent and dried thoroughly.

Cassettes filled with activated carbon are often placed behind the grease trap. It must be removed to get to the filter. To secure the cartridges, clamps or special screws are used. They can be removed with a Phillips screwdriver. Before inspecting inclined models, remove the protective screen located at the front.

Cleaning Rules

A built-in hood with a carbon filter without an outlet requires constant replacement of the air purification component. Depending on the features and the selected filter, the latter has to be changed frequently. This is a necessary element that you cannot do without.

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Once a month, it is necessary to inspect aluminum or stainless steel mesh filters to remove soot and grease from their surface. It is best to do this once a week, then the cleaning process will be easy. In this case, the grate itself will not have time to become overgrown with a new layer of plaque. Manufacturers recommend a simple way to remove it: remove the mesh and put it in the dishwasher. If the pollution is quite intense, the equipment may not cope. In this case, you can resort to household products with an alkaline composition.

Removing various contaminants and fumes harmful to health is the task of a carbon filter. But the element itself also requires cleaning periodically. Laundry soap and ordinary soda dissolve fats well. As an alternative, the use of dishwashing gel and cleaning compositions for gas stoves is allowed.

Procedure

If the hood has not been washed for years, more potent products will be required. This could be a drain cleaning gel. For minor stains there is no point in purchasing such compounds. Regular soda can easily and easily cope with the problem.

Metal filters should be cleaned as follows:

1. Remove the hood grate and place it in any wide container.
2. Prepare the cleaning composition. To do this, fill a pack of soda with three liters of water. After this, transfer the solution to a container with a wire rack.
3. Heat on the stove, simmer for about 10 minutes over low heat. If it was not possible to get rid of the dirt after this, boiling should be continued. After washing, rinse the filter with running water and dry. After that you can put it in place.

Before you put the clean mesh in place, you need to inspect the internal cavity of the hood: drops of fat may be present here. It is better to remove plaque immediately after preparing food. If left unattended, it will be much more difficult to remove after a few days.

Special cleaning compositions and gels are used in accordance with the instructions on the packaging. Usually they are applied to the grill and kept for a certain time. It is better if the housewife runs a brush or plastic brush over the mesh cells. Next, you will need to wash it under water and dry it.

Advantages of a recirculating hood

The question immediately arises: why buy a hood with filters (and this is an additional expense), when you can simply install a model with an air duct that does not require annual investments?

In fact, recirculating hoods are very popular due to the following advantages:

• Autonomy. The device does not require a ventilation system to operate. If the exit to the ventilation shaft is in the opposite corner, you don’t have to worry about the design of the air duct, but simply install a model with a carbon filter.
• Compactness. The housing takes up a minimum of usable space above the stove, and its “working” part easily fits in a small cabinet. With sliders, the surface does not protrude beyond the border of the cabinet until it is time to turn on the device by sliding the panel over the stove.
• Heat retention. In winter, when the outside temperature is below zero, frequent ventilation threatens heat loss in the apartment. When using a hood with filters, there is no need to open the vents (unlike flow-through models, which require air flow).
• Easy to install. The hood is inserted into a cabinet suspended above the stove or simply attached to the wall. There is no need to create either an air duct or hanging structures to disguise it.
• Easy care. To ensure that the functionality of the device does not suffer, you need to change the carbon filters on time and periodically clean the anti-grease filters.

The cost of recirculation models can also be considered an advantage, since it fits well within a modest budget - on average from 2,200 rubles. up to 5000 rub. Plus, about once every six months you need to purchase a carbon filter, which will cost 350-900 rubles.

Additional information about recirculating hoods, their application and installation features is provided in the articles:

1. Coal hood: types, device, selection and installation rules
2. Hood without venting into ventilation: principle of operation, typical diagrams and installation rules
3. How a recirculation hood works + typical ventilation schemes with air recirculation

Grille upgrade

The purpose of the action is to get rid of substances that settle on the fan parts and on the internal cavity of the hood. Stainless steel allows minimal grease droplets to pass through. For this reason, they can be delayed by fixing synthetic fiber inside. This can be a thin layer of foam rubber or tape padding polyester.

Secure it with thin wire. Such a component must be changed in accordance with a similar algorithm of actions when changing disposable filters. It is necessary to ensure that the fiber allows air flow to pass freely and does not form aerodynamic drag. This is unfavorable as it increases the load on the fan.