JLI UV Canopy - JEVEN Kitchen Ventilation

www.jeven.co.uk
JLI-UV Canopy - Cyclone and UV filters
Product Description
The Jeven JLI-UV hood has been designed for kitchens
where exhaust-only hoods are needed or supply air
units are impossible to install.
JLI-UV is equipped with exhaust units with damper
plates and measurement taps.
In addition to JCE cyclone filters, the JLI-UV canopy also
has a UV-filter unit for removing grease and impurities
from the exhaust air.
JCE cyclone filters can be easily washed in a dishwasher.
Lights and filters
The JLI-UV hood comes with ultraviolet (UV) filters, JCE
cyclonic filters, a stainless steel mesh filter, a pressure
guard switch and lights.
The UV filter unit includes a UV frame with UV-tubes, as
well as a UV control unit and panel.
Material
The canopy's base material is stainless steel (AISI
304). The side panels can be made of:
- stainless steel (JLI-R-UV model) or
- laminated glass (JLI-S-UV model)
Accessories
Covering boards from the hood's top edge to the false
ceiling.
Product Code
System Jeven Hood
JLI-R-UV 2000x1500x540 - 1x315 - 0.3 m3/s
Side material
R=Stainless Steel
S=Glass
UV-filter unit
Length
Width
Height
Number and size of the exhaust air connections
Exhaust air flow m3/s
JLI-UV hoods
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
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1
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Functioning principle of the JLI-UV canopy
3
2
1. Heat and impurities rise into the hood.
2. The effective three-phase UV-filter extracts the grease and the dirt
from the exhaust air.
3. Clean air is exhausted into the ducts.
1
Functioning principle of the UV filter unit
6
5
4
1
2
3
PHASE 1
1. Grease laden air enters the filter.
2. Grease particles are extracted as the air spins in a
cyclone (>5µm particles)
3. Grease drains down to the bottom of the filter unit.
PHASE 2
4. When air flows through the wire mesh filter, the
temperature goes down and a smooth air stream is created.
Some of the remaining smaller particles are separated.
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2
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
PHASE 3
5. Ultraviolet light and ozone are generated by UVfluorescent tubes placed in the reaction chamber.
When the air stream meets UV light and ozone, the
remaining grease and odour decompose and break
down. Only carbon dioxide, water and a small
amount of dust remain.
6. Clean air is released into the exhaust ducts.
JLI-UV hoods
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Parts of the JLI-UV canopy
1
2
4
6
10
7
14
13
15
5
9
8
3
11
12
1. Outer casing
2. Lights
3. Light cable (approx. 2m)
4. UV filter unit
5. Exhaust air connection and airflow damper
6. Ceilling console
7. Hanging bracket
8. Pressure sensor
9. Pressure measuring hosepipe
10. UV control centre
11. UV touch screen
12. Control panel cable
13. Electrical cable from the UV unit to the control centre
14. The main power connecting cable which must be equipped with safety fuse
15. Electrical cable from the pressure sensor to the UV control centre
JLI-UV hoods
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
Page
3
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Parts of the filter unit
1
4
2
3
7
5
6
8
4
1.
2.
3.
4.
5.
6.
7.
8.
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Filter chamber
Exhaust air connection and airflow damper
Stainless steel frame with UV-lamps
Cyclone filters
Measurement tap for exhaust airflow
Table for calculation of the airflow rates
Mesh filter
Cleaning door
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
JLI-UV hoods
www.jeven.co.uk
220
JLI-UV wall hood
C
A-A
height
width
A
75
Dimensions of JLI-UV hoods
A
(module)
width
length
The UV hood's length, width and C measures can be
freely chosen at 100 mm intervals, taking into
account the following limitations:
- Minimum module size is 1200mm x 1200mm.
- Maximum module size is 3000mm x 1800mm.
- Standard heights are 330mm and 540mm.
JLI-UV island type hood
Custom solutions are available from the Jeven Design
Service Department and will be designed to suit
individual requirements.
C
width
Ø 400
The Design Service Department can be contacted on
0121 697 47 07 and design@jeven.co.uk
(module)
length
UV filter unit
195
375
375
990
Ø 400
440
440
JLI-UV hoods
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
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5
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Exhaust flow rates
Exhaust air flows are calculated according to the DW/172
standard, based on the type, size and power source of the
kitchen equipment located under the canopy.
Coefficient
Kitchen equipm.
C
Size
Power source
Exhaust
mm x mm
gas/electric
m3/s
Our design service team makes a tailored solution for
your kitchen, taking into account the cooking equipment
and all the available information about the kitchen. We
also provide CAD drawings of the new canopies, so you
have a complete solution.
Contact the Jeven design team today:
design@jeven.co.uk
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Objectives of kitchen ventilation
Total.
m3/s
The Jeven free design service team can help you with
these calculations.
Simply email a drawing of the kitchen and the list of cooking
equipment to design@jeven.co.uk and we will calculate all the
necessary airflows and also prepare a drawing of the canopies
for you for free.
Number of cyclones
4 5 6 78
120
100
Ps (Pa)
1. Cooking vapours and heat should be removed with the help
of efficient local exhaust in such a way that contaminants do
not pass though the staff’s breathing zone.
2. Temperature, velocity and cooling effect of the supply air
should be comfortable.
3. In cases where staff are subjected to high heat radiation,
they should be able to adjust the supply air (local cooling)
4. Grease extractors should be fire-proof and, as with supply
air units, should be easy to maintain.
5. Air flow rates should be easily adjustable.
Recommended exhaust air flows / UV-unit
Pressure loss and Sound data
Pressure loss
The Jeven free design service helps you calculate the
necessary airflows for your kitchens and can also
provide drawings. This saves you lots of time.
Airflow rate
Number of
m3/s
m3/h
cyclones
0.21 - 0.27 755 - 970
4
0.27 - 0.34 970 - 1220
5
0.34 - 0.40 1220 - 1440
6
0.40 - 0.46 1440 - 1670
7
0.46 - 0.53 1670 - 1900
8
dB(A) =50
80
70
60
50
dB(A) =40
40
30
0.08 0.1 0.12 0.16 0.2 0.24 0.32 0.4 0.5 0.6
300
500
700
1000
0.8 m3/s
1400 1800 2400 m3/h
Sound power level, Lw
The sound power level (Lw) for each octave band is
calculated by adding the corresponding factor (Kok) to
the sound pressure level (LpA), as in Lw = LpA + Kok
The number of cyclones depends on the air outflow. The
nominal airflow per cyclone is about 0.06 m3/s (210
m3/h). With that airflow, the pressure difference across
the cyclone is 40-60 Pa. The factory always delivers an
appropriate number of cyclones so that the pressure
drop in every cyclone is in that range (unless otherwise
agreed).
6 units of 39W UV lamps are always included.
The UV filter unit's exterior dimensions stay always the
same.
Kok factor
Hz
Kok
tol.
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6
Power of
the UV-lamps
6x39W=234W
6x39W=234W
6x39W=234W
6x39W=234W
6x39W=234W
125
6
±3
250
5
±3
500
4
±2
1000
-2
±2
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
2000
-9
±3
4000
-16
±4
JLI-UV hoods
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Ultraviolet light
The UV filter unit works on a photo oxidation basis, and
generates ozone with the help of ultraviolet lamps.
As a joint effect of ozone and ultraviolet light, grease
produced during cooking is turned into oxygen, carbon
dioxide, water and a polymerised (dust-like) grease.
Odour molecules are oxidized into water and carbon
dioxide.
In the UV filter unit, ultraviolet light breaks down the
protein chains in the grease molecules, so it is easy for
ozone to react with these now smaller molecules.
UV-lamps 6x39W in the UV-frame.
Full realisation of the process requires at least two
seconds of ozone time, so the exhaust ductwork must
be sufficiently long. Extra ozone created during the
process turns back into oxygen.
It is dangerous to look at blue ultraviolet light without
safety glasses. Never look directly at the light source for
more than three seconds without safety glasses.
UV filter units are always delivered with a pressure
sensor, which ensures that the exhaust fan is running
when ozone is created. This prevents ozone from
leaking into the kitchen if for any reason the exhaust
fan stops.
Deliveries always include a UV touch screen, which is
used to turn the unit on and off
Instructions
Installation instructions with switch diagrams as well
as maintenance and usage instructions are always
delivered to the workplace in the main delivery.
The UV frame and its lamps are easy to install and
maintain.
JLI-UV hoods
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
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Light fixture
2
85
40
1
B
1) Light fixture, as standard, IP 54
T8
B= 131 mm , ( 1x18W , 1x36W , 1x58W )
B= 168 mm , ( 2x18W , 2x36W , 2x58W )
T5
B= 80 mm , ( 1x14W , 1x28W , 1x49W )
B= 160 mm , ( 2x14W , 2x28W , 2x49W )
2) ca. 2 m cable, type EKK 3 x 1.5
By default, every hood module comes with a light fixture. The light fixture has a cable, which
should be connected to a junction box with a cable lock. The junction box is not included.
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Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
We reserve the right to make changes
to products without prior notice