Halton Down Flow unit.indd

BBQ – – – Down Down Down Flow Flow Flow Unit Unit Unit
for for front front cooking cooking and and display display kitchen
kitchen
Cooking is no longer something done behind closed doors, but takes place
in front of customers, almost like a show. The BBQ down flow unit has been
specially designed for these front cooking applications.
Highly efficient even with heavy duty cooking equipment like char broilers,
BBQ can replace the usual exhaust hoods installed at ceiling level improving
the aesthetics of the show kitchen.
BBQ includes all the best technologies developed by Halton.
• Double high efficiency ‘CAPTURE JET 2’ technology to sweep the
thermal loads and pollutants towards the filters.
• Two stages of Stainless Steel Model KSA ‘Multi cyclone’ high efficiency
grease filters (UL and NSF classified).
• Double skin construction with fire rated thermal insulation material to
reduce the radiation and improve thermal comfort.
• Halton Capture Bar system to reduce the customer and staff exposure
to impurities and to improve capture efficiency.
• Full stainless steel and welded construction (AISI 304).
• Can be used with any type of cooking equipment even heavy duty ones
as charbroiler.

QUICK DATA
Exhaust : maximum capacity 1800 m3/h
FUNCTION
The efficiency of the BBQ is based on three
unique technologies :
1. Halton Capture Jet technology
2. Highly efficient grease filtration using
KSA multi cyclone filters
3. Halton Capture Bar system.
HALTON CAPTURE JET TECHNOLOGY
A gentle flow of air is introduced at high speed
into the central part of the extraction unit and is
blown in the direction of the grease filters in the
form of Capture Jets. These sweep the thermal
loads and the pollutants towards the extractor.
The Capture Jets maintain extraction efficiency
irrespective of environmental turbulence and
prevent the increase of pollutants and excess
heat in the area concerned. They cool the
equipment reducing radiated heat.
HIGH EFFICIENCY GREASE FILTERS
Polluted air goes first through a first row of KSA
grease filters located round the edges of the
extractor.
After this first filtration stage, the air is extracted
through the lower part of the unit where it has
to go through larger KSA grease filters. Grease
is collected underneath the extraction unit.
The unique design of KSA filter enables
the grease to be separated from the air by
centrifugation. The extraction efficiency rate
is 95 % of grease particles of 10 microns and
over.
CAPTURE BAR SYSTEM
The Capture Bar system operates by means
of an air curtain and a fresh air supply unit
integrated in the apparatus. A jet of air
blowing through the upper surface of the
special engineered supply unit forms a curtain
of air that prevents smoke and smell from
penetrating the occupied area by directing
them towards the extractor.

FUNCTION OF KSA GREASE FILTERS
Halton has designed a unique mechanical
grease filter. Halton’s model KSA has a solid
back and air enters the individual chambers
and begins to rotate. With this true centrifugal
separation, the KSA achieves 95% removal of
grease particles sized 10 microns and above.
Due to the individual chambers, the KSA filter
has a very large free area ratio when compared
to traditional grease filters. This, in turn, allows
for a smaller pressure loss across the filter,
which reduces the energy requirements of the
exhaust fan and lowers the noise generated by
the exhaust, while still reducing even further
operational costs of the Halton system.
BBQ has 2 stages of KSA filters for better
filtration efficiency. The first one is on the left,
right and rear side of the hood close to the
cooking equipment, and the second one is
at a lower position close to the exhaust duct
connection.
A special grease trap has been designed to
easily collect the grease.
3
2
3
1. Grease laden air flows into filter.
2. Grease particles are separated from air
flow.
3. Cleansed air leaves filter.
1
2 stage of KSA
filters.

FUNCTION OF HALTON CAPTURE JET
SYSTEM
The high efficiency of Halton’s kitchen canopy
range is based on the unique Capture Jet TM
system. The Capture Jet TM works by delivering
a small quantity of air at a high velocity across
the inside face of the canopy directed towards
the grease filters at the back of the hood. This
creates a negative pressure along the front
edge of the canopy and assists in capture and
containment of heat and effluent in critical area
where people are working.
1. The Capture Jets TM maintain efficient
exhaust despite turbulence and prevent
excess heat and impurities from spreading
to the occupied zone.
2. Cool the hood unit and reduce radiated
heat.
3. Reduce energy costs due to lower air flow
rates than traditional systems with better
efficiency.
4. Improve hygiene.
Same technology has been used to improve
the capture efficiency of the new BBQ unit
with a double Capture Jet construction for
each equipment installed right and left from
the center part. An integrated Capture Jet fan
is supplying the Capture Jet air needed. No
supply duct connection is needed.
KVI with Capture Jets
OFF
KVI with Capture Jets
ON
Effect of the
Capture Jets on
BBQ.
Extraction of
convective heat
and cooking
effluents is
largely improved.

FUNCTION OF HALTON CAPTURE BAR
SYSTEM
This system has been originally developed by
Halton to be integrated in bar counters in order
to protect bar tenders and customers from
passive tabacco smoke effects.
The same system has been used for BBQ
to protect customers standing in front of the
cooking equipment from smoke and other
pollutants.
An integrated low noise supply fan is integrated
in the system to supply the necessary capture
bar air. No supply duct connection is needed.
Effect of the
Capture bar on
BBQ.
Customers are
protected from
cooking smoke and
odors.

OPTIONS
FIRE EXTINGUISHING SYSTEM (Ansul)
A fire protection system can be easily integrated in the down flow unit.