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You will go to a restaurant where there is nothing to breathe or the smell of the Soviet canteen? Hardly. The ventilation system for cafes and restaurants is a vital necessity not only in domestic (as for residential premises), but also in a business, market sense. It is obvious that a comfortable microclimate in the hall for visitors is indispensable for the prosperity of the enterprise. In turn, a good ventilation system of the kitchen ensures proper working conditions for the staff, which is also important for successful work.
Features of the Ventilation system of cafes and restaurants
The main feature of the ventilation of cafes and restaurants is the heterogeneity of the room. The corresponding solution should be combined and usually includes three sections:
- ventilation of the kitchen (hot shop and premises for preparing cold dishes)
- ventilation of the hall for visitors (including the dance floor, if any)
- ventilation of household, office and utility rooms.
Moreover, in catering enterprises, the problems of ventilation and air conditioning must be addressed jointly. Thus, it is advisable to mount a single complex of air conditioning and supply and exhaust ventilation with centralized control and the ability to control the air condition in various rooms of the restaurant. Within the given rather strict framework, specific equipment for each of the restaurant premises should be selected.
In particular, in kitchens it is necessary to ensure sufficiently active air circulation by means of a serious supply and exhaust installation. In places of active formation and accumulation of various odors, it is advisable to install local ventilation devices (for example, powerful hoods over stoves). In hot workshops, it is also important to ensure air cooling (to avoid drafts, fresh and exhaust air flows must be equal).
In turn, it is necessary to provide effective air conditioning in the main hall of a cafe or restaurant: in addition to sound insulation and proper air composition, a comfortable temperature should be strictly maintained at any time of the year. This problem can be solved, for example, by installing a split system that provides a controlled supply of conditioned air through a distributed network of ducts, or even a “chiller-fan coil” system that will allow you to effectively control the temperature in the room.
A variety of household and utility rooms can be equipped with less complex and expensive systems, but the supply and exhaust ventilation together with a certain level of air conditioning must be provided in any case. In addition to the centralized operation of heterogeneous systems, another specific requirement for the ventilation and air conditioning of cafes and restaurants is the provision of separate air conditioning for premises of various purposes. In particular, it is imperative that odors from the kitchen do not enter the visitor room. This problem, however, is quite easily solved by installing the appropriate air-thermal curtains.
More complicated installation of ventilation in hot shops. Usually, this is a small room where a large amount of heat, moisture, smoke, etc. is emitted during cooking. A powerful and sophisticated ventilation system is needed to supply fresh air and remove all fumes. Intensive air circulation in the kitchen with the installation of exhaust hoods (local ventilation) over stoves and other places of possible accumulation of odors. Umbrellas with an air supply device are most effective - air inflow in the volume of one tenth of the exhaust is discharged along the perimeter of the umbrella and prevents the spread of moisture, heat and odors in the hot shop. Umbrellas must be equipped with grease traps and filters.
Grease traps are quickly contaminated with soot and grease. Since grease traps are difficult and inconvenient to clean, they are simply removed. Then the fan is covered with soot and grease. In such conditions, the fans do not work for a long time - the consumption decreases, the motors fail. In such situations, it is easier to use a conventional natural range hood.
In the case of placing restaurants and cafes under an office building, apartment building or other inhabited premises, it is necessary to provide for the removal of air ducts for drawing out above the roof level.
For bathrooms and places for smoking, exhaust ventilation is installed. For utility rooms - general ventilation.
To calculate ventilation in a restaurant or cafe, you must have the following data:
- detailed floor plan
- the number of people in the halls for visitors
- extracts from the kitchen and bathrooms are taken into account
- power allocated to supply air heating
- smoking rooms and approximate number of smokers
- structure and thickness and exterior walls
- prospective installation sites for exhaust and supply units
- layout plan of technological equipment (stoves, grills, refrigerators, etc.)
- power consumption of equipment and excess heat
The ventilation of a cafe or restaurant must be given very serious attention, and this is exactly the case when we do not recommend saving. Remaking ventilation in an existing restaurant is almost impossible! Seeking advice from PROXOLODA specialists will allow you to choose the best technical and economically sound solution for your restaurant!
The creation of a harmonious fit into the interior and efficiently working, not causing complaints to the SES and fire ventilation and air conditioning systems at a catering enterprise, is a rather difficult task requiring the approach of professionals.