Material for extract can be applied to production of the masking box various: the box is metal or wooden, plastic or from MDF, made with own hand or factory. The greatest distribution was received by plastic: the optimum, modern, inexpensive, practical, easily purified material democratic at cost.
Box for extract – necessary attribute as which not only masking of the making parts of ventilation device, but also protection from negative external impacts, and indispensable esthetic component enters. Millions of hostesses whose kitchen is equipped with the device for cleaning of the room of evaporations and smoke, harmful to the person, consider interior of this room the main condition for fruitful work and good health. The device for ventilation can spoil seriously lovingly the created surroundings if it is not appropriately decorated. Therefore in extract not only its internal operating parameters, but also box in which it is placed are considered. It in a certain way depends on the sizes and power of the covered device.
Plastic box: advantages and dimensions
The choice of registration of ventilation device is defined by preferences of his owners. Someone does it with own hand, applying for this purpose tree or metal, someone gets ready plastic as the practical and not expensive option optimum in operation. The classical extract assumes standard dimension of plastic adaptation, and the built-in telescopic can have different parameters. It is difficult to imagine modern housing without ventilation device because correctly equipped system of updating of air defines also condition of the people living in it, and purity of the situation which is in it. The kitchen in this regard requires special attention because in it food is cooked. It leads to emergence of smoke, ashes, soot, the parts of fat and dirt appearing during culinary processes. However availability of ventilation cannot prevent pollution completely.
Advantage of plastic box for ventilation:
- will reliably protect the internal contents;
- will allow to clean quickly and effectively outer surface;
- it is not subject to influence of moisture and fungus;
- iznosoustoychiv;
- practically does not give in to deformation;
- it can be made in any parameters;
- assumes any color suitable for the main decor.
At the qualified selection of the necessary size, high-quality fastening and professional mounting such adaptation will provide long life of the protected device, convenience in cleaning and additional upclassing of decor. Therefore at major repair or entrance to the new apartment it is necessary to think not only of ventilation system, but also of its protecting covering. Dimensions need to be selected depending on type of the installed system and some other parameters.
Technical characteristics
There are several technical characteristics on which it is possible to differentiate plastic box: width, height and depth.
Width of the standard built-in vent systems can vary from 40 to 70 cm. The choice of necessary width is oriented to the size of own device with small allowance for convenience of mounting and full covering of ventilating section. The small size will not provide due functionality, big can damage to registration of interior. The minimum rate of depth can be 30 cm, other preferences depend on the device and its placement indoors.
To guarantee fire safety and normal work of the hostess only height can. Its definition – key indicator which fluctuates between admissible fire norm and growth of constant inhabitants of kitchen. Average indicator of plastic box – 75-80 cm in relation to plate. It is the optimum parameter of height for of average height and fireproof norms. Big height can reduce efficiency of air purification, smaller – to create the probability of deformation of plastic under permanent influence of high temperature. However key parameter for the choice of protective plastic construction is air duct section.
Section of air duct and basic principles of its choice
The size of section of air duct is selected depending on the extract branch pipe section size. This parameter of ventilation device is specified in technical data sheet. Section of box is defined also depending on that, the device on air purification will work how intensively. As standard standards it is in this respect not developed, the average indicator calculated by special formula is applied. If the kitchen of the small size and inclusion of the maximum turns in constant duty is not planned, it is possible to use box with the section which in proportion decreases in the direction from extract to plate.
The choice of diameter of section of box should be made with possible care, and better under the leadership of the expert. Nonprofessionally and incorrectly picked up size can lead to negative consequences and considerable reduction of term of operation of extract. At the same time experts note that size more will cause than required additional financial expenses and will distort design of kitchen.
The choice of form of box for extract
There are 2 types of forms at plastic boxes. They can be round or rectangular, but experts incline to opinion that the round shape is more preferable. Certain parameters are considered as standard, and they most often are present at the assortment of retail networks:
- 80 mm, area of cut are 50.3 sq. cm;
- 100 mm, area of cut are 78.5 sq. cm;
- 125 mm, area of cut are 122.7 sq. cm;
- 150 mm, area of cut are 176.7 quarter see.
Rectangular it is easier to enter in the existing interior, and they are standard parameters too though at great desire it is possible to find also the atypical sizes. Incorrectly picked up dimensions can lead to the following negative consequences:
- load of design components increases;
- operation duration due to wear of separate elements decreases;
- electricity consumption grows;
- air resistance increases, and it leads to deterioration in circulation of air streams;
- noise level becomes maximum because of the arisen aerodynamic effects;
- air pressure provokes increase in vibration level, and reduces thereby reliability of the existing fastenings which are not calculated on similar loadings.
Acquisition of plastic boxes, non-standard by the size, forces the consumer to look for also the plastic shaped elements corresponding to it (pipes of the corresponding diameter, knee, reliable fastenings) which it can just not appear on sale.
Basic rules of installation: why the expert is necessary
The owner of the room can independently mount vent system, but he not always knows certain nuances which the profile expert is able to consider:
- how to minimize length of ventilating box;
- as it is correct to make fastening of compound shaped elements and to reduce their quantity for overcoming added aerodynamic resistance;
- how to reduce number of 90-degree turns which not only strengthen noise but also to the minimum quantity become shelter of fat and dust;
- to consider possible health risks of heating of plastic from heating system or directly from the plate that there was no deformation of protective device (to bypass object or to provide heat insulation);
- it is correct to equip the return valve, grid, connection of each branch if those are available.
If the owner after all decides to be engaged in it independently, then certain technical knowledge is necessary for him for carrying out the corresponding calculations, and experience in similar area. It has to consider need of availability of natural ventilation and provide ways of permission of possible problems, supply external opening of air outlet with protection against birds and rodents who can get there.
The most crucial moment in the final phase of mounting of vent system is reliability of fastening. For this purpose there are special devices. These are specific collars, laying inserts from polyfoam or expanded polystyrene, self-tapping screws, holders. All this should be got, having counted general lay-out, ultimate load and material of wall in advance.
It is improbable that the person who is not working in this sphere will be able independently to perform work without negative consequences.