What types of household fans are there for hoods 100mm or more?

Household exhaust fans are devices that support the active outflow of air from a room. Installation of devices is required in rooms with high humidity. When purchasing a fan, a number of factors are taken into account, primarily the specifics of the room.

Purpose of household fans

The devices are installed when the quality of air exchange is poor. The devices are especially needed in kitchens, bathrooms, laundries, dressing rooms and living rooms with poor natural ventilation.

The problem of lack of air flow is especially pronounced in bathrooms where there are no windows. High humidity promotes the appearance of fungus, mold, and the smell of dampness. The ventilation systems included in the project are aimed at removing air masses by gravity. This is not enough, so apartment owners install forced systems.

This need arises when:

• design errors or clogging of the ventilation duct;
• installing a powerful hood in a neighboring apartment;
• increased tightness of doors and windows;
• the location of the building near a reservoir, close to groundwater;
• being at home in an area with a hot, humid climate.

Gravity ventilation is not always effective at removing kitchen odors.

Exhaust fans perform the following functions:

• remove excess moisture;
• prevent the appearance of condensation on glass;
• speed up drying of laundry;
• refresh the room.

Exhaust fans remove excess moisture.

Checking the draft force and factors affecting humidity

The second problem is the formation of cold zones inside ventilation shafts due to the presence of metal elements. Then you can simply not even think about ventilation. A simple experiment will prove the validity of these lines - just attach a piece of notebook paper to the grille of the ventilation hole. Ideally, it should be held in place by air flow. But on different days you will get different results: one day the leaf holds perfectly, and the next day it falls to the floor. Then you can't do without a fan.

Exhaust ventilation diagram.

What kind of exhaust fan do you need? Before you go to the store to choose an exhaust fan, let's evaluate all the factors affecting the humidity in the room:

• number of residents in the apartment;
• ceiling height in the room;
• number of floors in the house;
• number of windows in the apartment;
• preferred ventilation mode.

How does a household exhaust fan work?

The device looks like a mechanism with an electric motor and an impeller located on the same axis. Air is drawn in through a cover with louvres that act as a safety valve. Such devices are built into windows or wall ventilation ducts. Centrifugal type devices are installed in the shaft. The jet in them moves perpendicular to the axis.

The mechanisms are launched automatically or manually. In the second case, press the switch. Automatic devices are triggered when a certain level of humidity is reached, a certain time period ends, or the lamp turns on. Some exhaust systems can be switched to winter mode; the incoming air masses are heated by a recuperator. The flow coming from the room heats the jets coming from the street. The masses move in isolation, which prevents them from mixing.

Blauberg Aero Vintage 125 – performance

Exhaust axial fan with increased performance. It is used in medium and small premises: domestic and civil premises, kindergartens, catering establishments, medical institutions.

The design is made in an interesting vintage design that fits into any interior. The rotating parts are perfectly balanced, which makes the fan quiet during operation.

Pros:

• Interesting antique design.
• Excellent performance.
• Makes little noise during operation.

Minuses:

• Although the output is high, it takes 5~10 minutes to remove the steam.

Varieties with characteristics

Fans are classified according to technical data and design.

Duct

The device has the form of a cylinder with a built-in impeller. The device becomes an extension of the air duct. It can be built into the wall. This installation method makes the fan almost silent. The space remaining after installation of the system is covered with a grille. Air exchange channels from the room are conducted through a group of filters. The flow is cleaned and then returned to the room. It is convenient to install air ducts between the floor slab and the suspended ceiling. Duct systems are characterized by increased power.

The channel device has the form of a cylinder.

Axial

The fan has the form of a cylinder in which there is an impeller placed on the motor shaft. A manifold is installed in front of this system, improving aerodynamic characteristics. The advantage of such devices is considered to be increased productivity (up to 100 cubic meters per hour).

The fans are characterized by a simple design and low noise level. They are often built into ventilation ducts in bathrooms and kitchens.

Centrifugal

The angle in the longitudinal line of the impeller of this system is replaced by an inclination in the transverse plane. Therefore, the operation of the device is based on the movement of the jet through a spiral-shaped part. The blades deflect the flow to the side, which contributes to the appearance of a high pressure zone. Air masses move quickly away from the center. The difference in pressure starts the suction process. Installation of a collector acting as a diffuser is required. Devices are capable of functioning at temperatures of -45…+60 °C.

The centrifugal fan has a spiral-shaped part.

With timer

The devices start when the lamp is turned on. After turning off the light they work for some time.

The exhaust fan is set to turn on:

• after the current appears at the terminal (the work ends after the timer reports the selected interval);
• after 1 minute has passed after pressing the switch (the air flow stops after the set period has ended).

The second option is convenient for a short visit to the room.

There is no need to turn on the fan frequently, which helps save electricity.

A device with a timer can also operate from a separate switch.

With check valve

Devices of this type replace dirty air with clean air. Devices of this type are well suited for bathrooms, basements, kitchens, and smoking rooms. The locking part has the form of a blade, the size of which exceeds that of the fan inlet. This design prevents the entry of untreated air masses from the street. When the fan starts, the valve opens, when it turns off, it closes. Household appliances use automatic elements.

Devices with a check valve are suitable for bathrooms.

Valves are classified according to:

• material (metal or plastic);
• shape (round or square);
• installation method (vertical or horizontal).

Radial

Such models are distinguished by the spiral structure of the body, into which the impeller is mounted. Under the influence of centrifugal force, air masses are compacted and move in a radial direction. The blades can rotate in different directions. When working in the forward direction, performance and noise levels are higher. If the blades point in the opposite direction, the fan runs quieter and saves energy. However, productivity decreases. Due to its small size, the radial device can be built into any air duct.

"Snail"

These devices got their name because of the unique structure of the body. The performance of such devices is higher than that of classic ones. The principle of operation is simple: the air flow is sucked through the hole and begins to rotate under high pressure. This helps it gradually move towards the exit.

The “Snail” fan sucks air through the hole.

What is it for?

Sanitary standards for ventilation of kitchen premises require the use of at least a 10-fold air exchange mode. This means that in an hour the air in the kitchen must be completely renewed at least 10 times. As a rule, this task is fully accomplished by a ventilation duct built into the wall, the performance of which is designed to meet sanitary standards. However, it is only able to work under certain conditions.

In particular, it requires replenishment with a fresh air flow, otherwise a slight pressure drop will form in the room. This difference is enough to stop the natural ventilation system from working.

In modern apartments, plastic windows and sealed doors are almost universally used, which do not provide a flow of fresh air. Therefore, natural air exchange does not work; forced ventilation is required.

The most effective and common way to solve the problem is to use a kitchen hood with an umbrella installed above the hob; this is a simple and reliable design that captures steam and fat suspensions directly at the point of their release and prevents the spread of these components throughout the room.

How to calculate the required ventilation power

The efficiency of forced supply systems depends on productivity, i.e., the volume of air driven over a certain period of time. The parameter is measured in m³/hour. To calculate the volume of a room, the length is multiplied by the width and height. In this case, the resistance of air channels, humidity and type of room are not taken into account. To obtain more accurate values, the volume of the room is multiplied by a multiplying factor. The value is taken from the table.

The procedure for carrying out installation work

Before connecting the fan in the bathroom, you should study the instructions, which describe the detailed installation process. In accordance with the recommendations, the selected model of hood is installed in the bathroom or bathroom.

Actions are performed in a certain sequence:

1. First, remove the front cover and apply liquid nails, silicone or polymer glue to all areas where the product adjoins the wall surface. These materials will provide a strong hold for the relatively lightweight plastic.
2. We insert the device so that the working part together with the electric motor is completely in the wall. Press firmly to the attachment point for several minutes.
3. We install a mosquito net that will prevent various insects and midges from entering the room.
4. We attach the front cover with self-tapping screws, which are included in the kit. This action is carried out last.

When connecting to the power supply, there should be no exposed wires in the room without insulation. They are placed in recessed ventilation ducts using a corrugated casing.

When connecting the hood to the power supply, safety precautions must be observed. First of all, you need to make sure that the electricity in the room is turned off. To connect wires, they do not use twists, but more reliable terminal blocks

Many users connect fans via a contact pair to a light switch. The switch is installed in phase.

For convenience when using the device in the future, you can install a separate button to turn on the hood. If when visiting the bathroom there is no need to operate it, then it is convenient to use only the lighting control key. then the time spent in the room will not be overshadowed by the hum of the rotating blades.

Which fan to choose depending on placement

When purchasing a device, take into account the following parameters:

• diameter of the blades (the best size is 10-15 cm, the working part should be covered with a grill);
• power (the higher this parameter, the larger the volume the device processes);
• noise (this indicator is analyzed when purchasing inexpensive models);
• availability of additional functions (control panel, timer, heating, ionization);
• control (button or touch panel);
• processed area;
• angle of rotation;
• modes (staying in a room becomes more comfortable with multidirectional movement of air masses);
• option for installing fans (wall-mounted, window-mounted, built-in).

When purchasing a device, take into account power and noise.

For the bathroom

Indoors, you can install models equipped with additional options: moisture protection, water sensor, shutdown delay timer. This way the fan will start when dampness appears and turn off 25 minutes after the person leaves.

Moisture protection prevents damage to the main elements of the device. The moisture resistance coefficient must be IP 44 or higher.

For the toilet

The main problem of the premises is considered to be the backflow of unpleasant odors from the ventilation ducts. Therefore, it is worth choosing devices with blinds or a check valve. It is mandatory to have a shutdown timer. The device will work for 15 minutes after the visitor leaves, eliminating odors.

For kitchen

The presence of a filter is considered mandatory. When cooking food, grease particles are released into the air and settle on surfaces. The fan should remove them without becoming clogged. A high-quality filter traps contaminants, protecting device parts from the formation of grease deposits. To prevent the exhausted air masses from being thrown back into the apartment, the fan must be equipped with a safety valve.

A high-quality filter protects device parts.

For a shared bathroom

In this case, the devices are subject to the same requirements as those used in bathrooms. It is recommended to have a timer and moisture sensor.

For the dressing room

When purchasing a device for this room, the following characteristics are studied:

1. Power. The parameter should have average values ​​so that the device ventilates well, but does not cool the room too much.
2. Type of device. For a wardrobe, centrifugal or axial is suitable. You can also buy a simple exhaust device.
3. Presence of a timer. This block is needed to automatically turn off the device after the visitor leaves. The timer can be set for half an hour.

Results and conclusions

To summarize the above, it is worth noting once again that any kitchen must be equipped with kitchen exhaust fans. This is primarily due to concern for your health and the health of the people in the room.

The article provided information about the purpose of exhaust devices and their types, and provided recommendations on power calculations and installation methods. We hope that the information presented will help you make high-quality and reliable ventilation.

In general, about installing a household hood fan

When installing devices, you must follow some rules, otherwise the device will not function correctly.

In the kitchen

When installing a fan in this room, follow these tips:

1. The hood is connected to the air duct at the highest possible height. This way the device will collect exhaust gas.
2. The air supply openings should be on the side opposite the fan.
3. Do not install appliances with a housing that is not protected from heat and moisture above a stove.
4. If there are frequent voltage fluctuations, the fan is connected through a surge protector.

The hood in the kitchen is installed at a high height.

In the bathroom

Installation can be easily done by yourself if you follow these rules:

• leave a distance of 2-4 cm between the door and the threshold;
• Before installing the device, check the quality of air movement in the shaft.

At the first stage, the structure is connected to the electrical network, and if necessary, the seat is expanded. If it is larger than the size of the device, install a sealing plastic pipe. The grating should cover the uncoated sections of the wall.

In the window

It is difficult to install a fan into window glass yourself. It is recommended to use the help of a specialist. The glass may become damaged and will have to be replaced.

The cost of installation starts from 5,000 rubles. When replacing an old window, purchase a product with a hole already cut.

Vents 100 LD Fresh Time – decorative panel with a clock

A fan with an unusual design solution - a decorative panel with a built-in quartz clock has been added. Installation is carried out directly into the ventilation shaft. The possibility of installation in a flexible air duct is provided.

The device is designed for periodic or continuous operation. The electric motor develops high speeds and is economical. An axial fan is used for air exchange in small rooms.

Pros:

• The presence of a watch is an interesting and practical design solution.
• Low cost, quality workmanship.
• Does not creak, does not make noise, fully performs its functions.

Minuses:

• It is not equipped with a check valve, I had to buy it separately.

Best Exhaust Fans

The list includes devices that have received positive user reviews.

Axial

Models with the best technical characteristics:

1. VENTS 150 LD 24 W. The fan operates continuously and does not require complex maintenance. The device is protected from moisture, so it can be installed in a bathroom or bathroom. The model is compatible with thyristor regulators. When they are integrated into the system, you can choose the speed of the blades.
2. Blauberg Quatro 125 T 16 W. The device has a valve that prevents dirty air from entering from the street. There is a built-in delay timer that can be set to 2-30 minutes. The special shape of the impeller makes the device operate silently.
3. Electrolux EAF-100 15 W. The household fan is suitable for placement in small kitchens, showers and bathrooms. High-quality components are used in the production of devices. The disadvantage is the increased noise level.

Radial

The best in this category are:

1. Soler & Palau EcoAir Design S 7.2 W. The silent and economical fan can operate around the clock. It can be used not only in residential but also in commercial premises. In standard mode, the fan consumes a minimum amount of energy, but it can be set to maximum power.
2. Vortice Quadro Micro 100 28 W. It is considered the best choice for rooms with high humidity. The case is well protected from moisture, it is not afraid of steam and splashes. There are 2 operating modes. The disadvantages are heavy weight and high cost.
3. Soler & Palau CK-25 N 40 W. The fan is equipped with a condensate container and removable filters. The device does not require complex maintenance. The performance is sufficient to purify the air in a room of 50 square meters. m.

With a check valve

The rating of devices equipped with such a part includes the following models:

1. "VENTS 100 QUIET-STYLE" 7.5 W. The quiet motor is attached to the body through vibration-absorbing gaskets. This helped to achieve minimal noise levels. To control the speed of rotation of the impeller, you can use any convenient method. The unit is allowed to be equipped with timers, humidity sensors, and thyristor regulators.
2. Electrolux EAFM-150TH 25 W. The main advantage is considered to be high productivity (320 cubic meters per hour). The shutdown timer and humidity sensor eliminate the need for manual control. Not all users like the design; some find it too simple.
3. Soler & Palau SILENT-100 CZ 8 W. Characterized by long service life, high performance, silent operation. The housing's protection from moisture allows the fan to be installed in bathrooms. The case is available in 5 color options.

On the window

This type of fan is used less frequently than previous options.

If the owner of the premises decides to install such a device, he should pay attention to the following models:

1. "ERA HPS 15". An axial fan is built into the window opening. There is a check valve controlled by a cord switch. The housing and impeller are made of durable plastic, insensitive to ultraviolet radiation and moisture.
2. BPP 15 BVN (Bahcivan). The household fan is equipped with a reverse function, thanks to which the design operates in exhaust and supply modes. This helps to continuously renew the air masses in a residential or industrial area.
3. Wind-K 125 ST. The device is equipped with a timer and controlled blinds. There is a protective cap that stops the flow of air when stopped. The low noise level allows the device to be installed in any room.

It is recommended to install an exhaust fan in all rooms. The device is selected taking into account the area and purpose of the room.

Choosing a hood based on intensity of use

When considering the technical characteristics of hoods, you should first of all pay attention to how intensively you use or plan to use the gas stove. The fact is that everyone uses this device differently - some more often, some less often. And for each option there are solutions.

So, for example, if you don’t use tiles very often, then a circulation hood would be a good option for you. The principle of its operation is to purify the air in the kitchen in accordance with the principle of circulation. When using an exhaust device of this type, the air from it is not removed from the room, but is cleaned. Cleaning is carried out by passing it through a carbon filter, which is replaceable. If the load on the devices is not very intense, then such a filter will have to be changed no more than once every two years. These are basically ductless hoods.

If you use kitchen tiles more intensively, you can turn to another option, which is presented in a flow-type exhaust device. The principle of operation is to remove contaminated air masses from the premises. Such exhaust devices are characterized by better power. In addition, they are equipped with special grease-catching filtration devices, which are designed to protect the fans from contamination.

Combined models also exist. They are able to combine the functions of flow and circulation exhaust devices. However, such devices are characterized by high cost. At the same time, they are almost completely automated and are able to choose the operating mode depending on certain conditions.