Duct fans for silent exhaust: selection criteria

It is difficult to imagine life without technology. It surrounds us everywhere. Even the air purification is not a trivial ventilation and mechanical ventilation unit. This is the most effective way to improve the microclimate in the house, because human health is directly dependent on the air quality. Ideal for cleaning the channel are silent fan for exhaust. They recommended sanitary standards for installation in the air channel in the kitchens, bathrooms and sanitary facilities.

Scope noiseless channel fan

The widespread popularity of such models were due to simple construction work with minimal noise and high functionality. They can be installed in office and commercial buildings, factories and housing. you need to select the fan with the appropriate parameters for each room.

Equipment manufacturers equip the required characteristics:

• Quietest fans for drawing in the bath must be equipped with moisture sensors which open at exceeded the allowable limit. And also desirable to have a check valve;
• to the bathroom fan should be chosen with the timer off in addition to the humidity sensor. Suitable overhead or embedded device;
• to the storerooms suitable centrifugal or axial model. For such rooms is the most functional and cost-effective equipment.

Model selection for appointment premises will save costs and improve air quality.

Fans for exhaust duct silent: types and characteristics

The equipment can be classified according to various criteria:

Classification	Description
The shape of the hull
round	Used for installation in air ducts of circular cross section. They are chosen for the device coercive kitchen hoods or in bathrooms.
rectangular	Designed for mounting in rectangular channels. They are characterized by high power, so this equipment is mainly used in the industry.
square	Fans for industrial hood with a cross section in a square shape similar to rectangular.
According to a constructional execution
axial	The fan is mounted in the housing in the form of a cylinder. The blades are fixed on the motor shaft. Flows are moved parallel to the axis. To enhance the aerodynamic effect on the set input manifold. The main advantage - efficiency close to 100%.
radial	Bladed wheel is mounted in the volute casing. Air mass under the influence of centrifugal force, moving in the radial direction out of the room. The shape of the blades is slightly bent outward, which increases power. The blades move forward / backward. When moving forward energy savings can reach 20%.
centrifugal	Centrifugal extractor fan - it's a fairly new model on the market, suitable for rooms with an area of ​​more than 15 square meters. m. They have a high capacity and silent operation. The main advantage - the ability to mount to the air intake or in the middle ventkanala.

In addition, produce devices with the function of smoke and with additional protection against explosions.

Axial design of such equipment designed for the removal of air streams with harmful impurities. They are installed not only in manufacturing but also in the kitchen, which is often, and a lot of cooking.

The main advantage of such models - increased capacity. The air in the space to be cleaned in a few minutes. The function of protection designed for use in the production of flammable and explosive substances. In everyday terms they practically do not apply.

Schematic diagram of an apparatus noiseless channel fan, its advantages and disadvantages

Operation of any fan reduces the displacement of air masses on the integrated channels. It includes:

• impeller with vanes;
• plastic or metal housing;
• engine.

Channel device can operate at temperatures ranging from -15 ° to + 30 ° C. Each sample was supplemented with thermal protection, responsible for the overheating of the product. For manufacturing the housing using a high quality and durable plastic or galvanized steel, which can take high loads.

The positive aspects of equipment include:

The negative nuances should be taken very carefully prior to the acquisition of the equipment:

The main technical parameters of duct fans

Before selecting a model, it is important to understand the specifications.

Performance

Calculate the performance is easy. You need to know the parameter or multiplicity of air exchange per hour and multiply it by the amount of room. Each room is its own norms change of air masses. Number of users with three air bath norm 6, if 4 or more people - the rate of 8, for the bathrooms - the norm 10.

When you select should provide margin characteristics of not less than 20%. For bathrooms selected exhaust fan 100 mm with a capacity of at least 95 cubic meters per hour.

noise

Any device with the engine emits a certain noise from operation of the engine and from movement of air streams. Silent fan model produces sound not higher than 25 dB.Optimalny household noise component should not exceed 35 dB. When choosing a model, you need to be guided by these values.

This is useful to know! fan noise level can be reduced if the set of his body muffler and triple additional sound insulation in the ventilation shaft.

Security

To this characteristic is necessary to carry dust and moisture protection. This is especially true for areas with high humidity. To prevent short circuits is better to stay on the fans with additional protection. It is possible to choose devices which operate with a voltage of 24 V.

Quality

Quality products from trusted manufacturers must comply with international standards. The minimum allowable setting the protection class IP34 to be.

In addition to these characteristics, it is important to know the pressure, power and speed, they also affect the efficiency of air purification.

Basic geometric dimensions and parameters ventilators

When you select a device based on ventkanala sizes. Manufacturers produce duct fans for round ducts, with the following sizes:

• for domestic use: 100, 125, 160 mm;
• for industry use channel fan 200 mm. In large productions diameter may be 300, 355, 400 mm.

Important! model size must strictly conform to the cross section of the duct.

Rules channel fan silent choice for kitchen hood

For the kitchen fan to increased requirements. Its main purpose - protection against odors that occur during cooking. To this end, the choice should be stopped on the exhaust fan with a check valve. It will protect from penetration of air in the room when the air cleaner.

Important! Fan for exhaust must withstand elevated temperatures and humidity.

The model can have additional functions:

• remote control;
• backlight;
• built-presence sensor.

Kitchen alternative ventilation can be setup window drawing, which cuts into the glass or window frame. However, this device has the negative aspects. It does not provide a check valve, so a high probability of occurrence of drafts. Window device is not currently enjoyed great popularity. It is much more convenient to use an exhaust fan for the kitchen.

Choice should be made on the basis of the installation site, as not every model can be mounted horizontally or at a certain angle.

Related article:

How to choose a hood in the kitchen, professional advice. This article contains important information and expert advice to help make the comprehensive analysis and make the right decision about purchasing a particular product.

Basic and advanced features for exhaust duct fans

Functionality - under this option implies an automatic or standard mode of operation:

• auto - supplemented by a timer, which control the switching on and off the equipment. In most devices, integrated sensor which detects the humidity level;
• inclusion Standard mode occurs at the moment when the light. Fans with such a regime suitable for rooms with moderate humidity.

Besides the technical characteristics, there is still more to work on the equipment is not affected. This visual perception of color, depth, type of lattice, the secondary features. To remember when buying that all the extra features add to the cost of equipment and do not affect the quality of cleaning.

Marking functions specified in the data sheet:

• FROM - check valve;
• R - a timer;
• H - humidistat;
• D - Motion Sensor.

Rules silent channel fan installation and assembly

Before installing the ducted fans (125 mm or more) should check the operation of the main system. This can be done in two ways:

• using a lighted match - the flame must be directed towards the ventilation shaft;
• paper It must be held in the opening of the ventilation system at the expense of the air flow.

If neither method is not successful, then the fan is needed. Then you need to choose the place of installation. The most optimal - close to the ceiling, as the moist air masses are always at the top.

When mounting should follow the basic rules:

• setting to produce better during the repairs;
• wiring must not be in open space. It can be put into the box, or in Stroebe during repairs;
• fan connection in the bathroom is best to perform the switch;
• excellent protection of equipment from vibration and external influences will be the installation in a plastic box in ventshahte. Secure it is possible by means of foam, silicone sealant or grout;
• the best place for the equipment in the bathroom - over the toilet.

Step by step connection guide

Before installation, a silent channel fan (100 mm or more) should read the manual and follow these steps:

1. Remove the protective cover from the case.
2. The product apply a special adhesive compound.
3. Set at the allotted place for him, firmly press and hold for a few minutes.
4. Screw on the cover.

It is important! The fan should be pressed firmly to the channel, or during the operation of the additional vibration will be generated, which quickly bring the fan out of action.

Rules of operation and maintenance of duct fans

Any equipment with good care will last a long time. Fan important periodic cleaning and inspection process. It is necessary to clean not only the body but also the bars and blades, check the tightness of the channels on joints and clean them from the fatty deposits that may contribute to the development of microorganisms.

Clean channel fan for drawing a diameter of 100 mm is possible with a sponge or brush with household chemicals. If particularly dirty, the fan must be removed and disassembled. Set it into place only after a thorough cleaning of all parts. If the design of the filters are installed, you must change them with the required frequency.

It is interesting! Greatly facilitate the work and reduce the number of cleanings mounted fine mesh at the inlet. In addition, it will protect against ingress of coarse particles into the unit.

Can I repair a duct fan with his hands

If the silent hood for the kitchen broke down during the warranty period, it is better to invite employees of service. Independent repairs will result in removal from the equipment warranty. If the service is not a number, and you have a repair electrical skills, you can try to fix the damage yourself.

Firstly, you need to check all the places of wire connection, then clean the equipment and look for damage to the engine itself. In either case, to undertake repairs only if you have experience and knowledge in electrical engineering.

An overview of the price, manufacturers and models

On the fan price is influenced by technical parameters, the material from which the body and the size is made. Is also important and the manufacturer, because the equipment of famous brands - quality, proven over the years.

We offer an overview of the most popular models, manufacturers with an estimated value on the product:

Device / Manufacturer	power, kWt	Estimated cost, rubles.
	0,437	9 000
	0,1	5 000
	0,06	6 000
	0,49	6 000
	0,28	5 000
	0,14	10 000
	0,037	1 500

The cost of the equipment European manufacturers of domestic above, however, the operation of the quality and durability they are also more, unlike domestic.

conclusion

There are many advantages in using a silent fan. They produce high-quality ventilation, invisible in the interior, for their installation does not require a special arrangement of space. Caring for them is simple, repair available. But the main purpose - efficient and quality cleaning of air masses.

You liked the review? We are interested in your opinion. We look forward to feedback and questions in the comments. Our team is happy to take part in the discussions.

As a bonus, we offer watch a video of the fan installation in the bathroom: