Exhaust hoods with a hydrofilter (hydraulic seal) are used in public catering establishments equipped with barbecues, tandoors and other equipment that uses open fire. Guaranteed complete absence of standard hazards when working with open fire, reliably protect from sparks, soot, smell, cool hot air.
Our specialists tested a flow-through hydrofilter with a capacity of 3000 m 3 /hour. We present to your attention a video report from the tests.
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Appointment of exhaust hoods with a hydraulic filter
Exhaust hoods with hydro filter cool and purify the air from the products of combustion of wood or coal is much more reliable than umbrellas of any other design. When passing through such an umbrella, the temperature of the air heated by a barbecue or other equipment decreases several times: from 120 ⁰С to 40-50 ⁰С, pollution (soot, soot, dust, grease, etc.) is almost completely removed. kitchen over open flames 100% prevents sparks from entering the ventilation ducts, which may cause a fire.Design and principle of operation of exhaust hoods with a hydraulic filter
We offer exhaust hoods with a water filter of their own original design. Umbrellas are equipped with a hydrofilter (water spraying system in the working area of the umbrella), special grease labyrinth filters, one or two moisture separators with tie-ins, a tap for supplying water to the system, a water drain coupling.
Grease filters were developed specifically for umbrellas with a water spray system and, due to the peculiarities of their design, reliably prevent water from entering the work area umbrella. Moisture separators of the original design block the ingress of water droplets into the duct system.
Getting into the umbrella, the air first passes through grease filters, with the help of which part of the fat and soot is removed, then through a water curtain, which is formed using nozzles mounted on a tube connected to cold water supply, where it is cooled and further cleaned. Used water, grease and soot are discharged into the sewer through the water drain coupling.
Umbrella water filter - quality assurance
Both bench tests and analysis of the results of operation at public catering establishments showed the highest efficiency of the equipment. We can guarantee:
- Spark extinction - 99.5%
- Removal of fats - up to 80-90%
- Removal of soot and soot - up to 100%
- Air cooling - up to 40-50⁰С.
Attention! For efficient operation of the exhaust hood with a hydraulic filter, do not allow:
- use of equipment without connection to the water supply system;
- operation of an umbrella without a pump if there is insufficient pressure in the water supply system;
- the formation of a vacuum inside the installation case;
- exposure to subzero temperatures.
It is possible to manufacture exhaust hoods with a water seal (hydrofilter) of a trapezoidal (TYPE 2) or rectangular (TYPE 3) shape.
materials
The case and details of an exhaust umbrella are made of food stainless steel.
Company "EuroVentGroup" manufactures exhaust hoods with a hydrofilter for air purification for barbecues, tandoors, stoves and other technological equipment any sizes.
We also manufacture hydraulic filters according to customer sizes.
The equipment made of stainless steel has in its design:
- welded and sealed body, for the manufacture of which food stainless fire-resistant steel AISI304, 2 mm thick, was used.
- water spray systems
- spark-extinguishing mesh filters
- filters for catching fat (in the form of a labyrinth)
- moisture separation systems
- valves allowing to open water under the electric drive
- water pressure sensor
- couplings that allow draining dirty water.
The one created by us is connected to the ventilation of the hood using a flange connection, which is a corner with a thickness of 3 mm made of stainless steel. To clean the case from various kinds of waste, such as fumes, soot, grease, the bottom of the case is equipped with a special insert with a diameter of 2 inches, it is connected to the sewer equipment. A motorized valve that can supply water to the spray system must be connected in parallel with the exhaust fan and open when the fan starts.
We have additionally installed temperature sensors on the hydraulic filter so that you can evaluate each characteristic of our equipment.
Now let's talk about how the hydraulic filter works in detail. The hot air coming from the brazier with t 80-180 ⁰С evaporates passing the exhaust hood, and then getting into the air ducts it goes to the hydrofilter.
- Hot air enters the mixing chamber, where cold water is sprayed using the system developed by us, and then a mixture of this water and hot air is created. The incoming air is irrigated, cooled and humidified. In order to make it easy for you to control the process, all hydraulic filters have a pressure gauge, as well as a gearbox that allows you to control the level of water pressure.
- After that, the air goes through mesh filters that allow sparks to be extinguished.
- The air is directed through filters that trap fats, they are made in the form of a labyrinth.
- The final stage is a dehumidifier system that removes excess water suspension from the air.
After purification, already cold air is freely removed from the room.
When choosing a fan with a hydraulic filter, it is necessary to install an additional fan on the fan. Resistance, approximately 200-300 Pa.
The inspection hatch can be positioned either on the right or on the left in the direction of the air flow, as the customer wishes, for comfortable use of the system.
On the hydraulic filter some negative points have an effect, which means that this device must take into account each of them and perform the necessary functions to prevent such actions. For the manufacture of equipment, we use high-quality domestic and foreign parts, each of them is produced on a laser automated complex. Each seam of the product is impregnated with acid, which allows you to create protection of the system against corrosion.
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