Are there hoods in the kitchen without a duct pipe?

When asked if there are hoods in the kitchen without a duct pipe, you can immediately answer - yes, there are. The pipe spoils the appearance of the kitchen, disrupts the natural circulation of air. After all, it has to be installed in a standard ventilation window, overlapping its cross section and reducing natural draft. The absence of a chimney will not negatively affect the air quality in the kitchen.

What are the household ventilation systems

The essence of any ventilation is the supply of fresh air from the street and the removal of exhaust air to the street. The word "street" in this context should be understood as a term denoting the space outside the walls of the apartment. On the streets of big cities, street air is far from the concept of "fresh", but still, with distance from the surface of the asphalt in height, it will differ from the apartment air.

Experts distinguish between ventilation systems by purpose and by the way the air flow is organized. According to the first sign, they are supply and exhaust, their task is to supply fresh air to the room. The old will be supplanted by it. Exhaust systems take care of removing old air, new one will take its place. On the second basis, forced and natural ventilation systems are considered. Natural air movement occurs due to the difference in pressure in the room and outside. The air will move towards the reduced pressure zone.

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Ventilation systems can be called centralized and autonomous. The first type works on a common house ventilation pipe, each apartment has an entrance to this channel. Autonomous systems do not need this channel; they clean the air inside their ventilation unit. These ventilation units work without a chimney.

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You need to know that ventilation pipes - both common in the house and your own in the kitchen - overgrow with debris over time, their cross-section decreases and the ventilation efficiency decreases. This indicator of comfort also falls when replacing wooden window frames with plastic ones. Wooden frames, due to all kinds of cracks, connected the room with the outside world, there was, albeit a small, but renewal of the air in the room.

Ventilation system without chimney

An autonomous hood without connecting an apartment to a common pipe is installed exactly when there is no way to connect to this pipe. Such hoods are also called recirculating or coal-fired. This name corresponds to the principle of operation of the ventilation device. Inside it are filters, including a charcoal one. The air taken from the apartment goes through a filter system, is cleaned of dust and odors and goes back to the same room. This is recirculation. Such an autonomous hood is cheaper than a centralized one, but it is inferior to it in terms of odor removal efficiency.

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Recirculation models do not take air from the room, its amount remains unchanged. It's just that the littered air is sucked into the device, filtered and in the same amount, but already clean, returns back. But in the filter, the air is not refreshed, but only purified. Therefore, when installing a stand-alone filter, it is advisable to regularly ventilate the room.

Possessing such a rather complex technical product, its owner must at least in general outline know its structure and understand the principle of operation. In the air cleaner housing there is a 220V AC electric motor; a fan "sits" on its shaft. In the same building there are charcoal and grease filters.

PHOTO: sovet-ingenera.com

There are models with two electric motors and two fans with one motor. When planning to make a new purchase, you need to inquire about the level of noise produced. This indicator depends on the power of the device and on the build quality of the mechanics. You also need to see if it is convenient to get to the filters when they need to be cleaned or replaced. The carbon filters themselves vary in shape, but they are always cassettes filled with activated carbon. There is also an anti-grease filter that traps droplets and micro-particles of fat that rise along with the steam. These filters are made of metal mesh that must be washed with warm water at intervals of 30–40 days. The technical characteristics of the device provide recommendations on the maximum volume of the room that the unit can effectively service.

Modern models have different control systems - manual and remote. When buying a new hood, you need to look at the specifications, design and brand. Very often, a higher price is assigned for a promoted brand, although its dignity is not at all higher than that of its neighbors. In the struggle for competitive advantage, firms are equipping their models with features that are quite possible to do without, but they increase the price for them.

Conclusion

If there is not enough natural air exchange for the apartment, you have to install an electromechanical hood. In principle, it does not matter if it will be with or without a pipe. Ventilation will still be a little more efficient with a pipe, and a little prettier without a pipe.