JSI UV Canopy - JEVEN Kitchen Ventilation

www.jeven.co.uk
JSI-UV canopy - Ultraviolet and cyclonic filters, and supply air
Product Description
The Jeven JSI-UV canopy has been designed for
kitchens where a comfortable, productive and healthy
indoor climate is required.
JSI-UV is equipped with exhaust, supply and direction
air. Unique draftless supply air diffusion and effective
grease extraction provide a comfortable and pleasant
working environment.
UV supply air hoods are suitable for professional
kitchens where effective grease extraction is needed.
In addition to JCE cyclone filters, the JLI-UV hood also
has a UV-filter unit for removing grease and impurities
from the exhaust air.
In island models the supply air units can be located on all
sides of the canopy. Supply air patterns are easy to
adjust and the supply air unit's front panel can be
removed and washed in a dishwasher, just like the JCE
cyclone filters and the mesh filter. The hood is equipped
with airflow damper plates and measurement taps on
both the exhaust and supply air.
Lights and filters
The JSI-UV hood comes with ultraviolet (UV) filters, JCE
cyclonic filters, a stainless steel net 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 supply air hood's base material is stainless steel
(AISI 304). Wall materials can be either stainless steel or
laminated glass.
Accessories
Covering boards from the hood's top edge to the false
ceiling.
Product Code
UV-Supply Air Hood
JSI-R-UV 3000x1600x540 - 4x250 - 2x400 + 0.56 m3/s - 0.75 m3/s
Wall material
R=Stainless steel
S=Glass
UV=UV-filter unit
Length
Width
Height
Number and size of the supply air spigots
Number and size of the exhaust air spigots
Supply air flow , m3/s
Exhaust air flow , m3/s
JSI-UV hoods
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
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Functioning principle of the JSI-UV canopy
6
1
1. Supply air is distributed through supply air units.
5
2. Kitchen staff can adjust the air pattern with the individual
nozzles.
3. Heat and impurities rise into the hood.
4. Direction air prevents air leakages and directs heat and
impurities towards the grease filters.
4
2
3
5. The effective 3-phase UV filter extracts grease and dirt
from the exhaust air.
6. Clean air leaves the filter.
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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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.
JSI-UV hoods
www.jeven.co.uk
Parts of the JSI-UV canopy
1
8
6
3
5
10
2
14
11
18
17
19
7
13
4
12
16
15
9
1. Outer casing
2. Supply air connection and air volume control
3. Light fixture
4. Light cable (approx 2m)
5. UV filter unit
6. Direction air unit with measurement tap for the supply air flow
7. Exhaust air connection and the air volume control
8. Personal supply air nozzles
9. Fascia of the supply air unit (detachable)
10.Ceilling console
11.Hanging bracket
12.Pressure sensor
13.Pressure measuring hosepipe
14.UV control centre
15.UV touch screen
16.Control panel’s cable
17.Wire from the UV unit to the control centre.
18.Main power cable (must be equipped with a safety fuse)
19.Wire from the pressure sensor to the UV-control centre.
JSI-UV hoods
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
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3
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Parts of the UV filter unit
1
4
2
3
7
5
6
8
4
1.
2.
3.
4.
5.
6.
7.
8.
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4
UV+mesh 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 rate
Mesh filter
Cleaning door
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
JSI-UV hoods
www.jeven.co.uk
Dimensions
ØD
K
B
E
A
height
F
E
width
A
75
A-A
220
JSI-UV wall hood
C
(module)
M
length
length
G
JSI-UV island type hood
The canopy's length, width, and C and E dimensions
can be freely chosen at 100 mm intervals, taking into
account the following limitations:
- Minimum module size: 1200mm x 1200mm
- Maximum module size: 3000mm x 1800mm
- Standard heights: 330mm and 540mm.
Ø 400
B
Height F ØD G Emin Kmin
mm
mm mm mm mm mm mm
M
mm
200
330
540
290 160 100
500 160 100
400
400
340
340
65
65
500
330
540
290 200 125
500 250 150
700
800
500
550
110
110
E
width
C
ØD
K
E
B
(module)
Custom solutions are available from the Jeven Design
Service Department and will be designed to suit
individual requirements.
length
The Design Service Department can be contacted on
0121 697 47 07 and design@jeven.co.uk
UV filter unit
195
375
375
990
Ø 400
440
440
JSI-UV hoods
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
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Recommended supply airflow rates
Recommended supply airflow rates per supply air unit. The recommended supply air for the hood is 50-90 % of
the hood's exhaust airflow, which is based on the convection airflow of the kitchen devices below the canopy.
Hood height
Supply air unit width (B)
Hood heigth
mm
330
540
200 mm
500mm
0.020-0.045 m3/s 0.050-0.090 m3/s
0.040-0.070 m3/s 0.100-0.150 m3/s
mm
330
540
Supply air unit width (B)
200 mm
70 - 160 m3/h
140 - 250 m3/h
500mm
180 - 320 m3/h
360 - 540 m3/h
The hood is preset at the factory to be ready to use with a project-specific airflow for a pressure drop of 25-35 Pa.
Pressure loss, Sound data and Throw length / Supply air unit
Spigot Ø 160 mm Unit width 200 mm
Hood height 330 mm.
60
50
40
Damper 1/2 closed
Spigot Ø 200 mm Unit width 500 mm
Hood height 330 mm.
Damper 1/2 closed
Damper open
LpA =45dB
Ps (Pa)
Hz
Kok
tol.
125
-3
±3
0,8
250
0
±3
500
2
±2
L0,2 (m)
1,4
1000
1
±2
2000
-6
±3
LpA =40dB
30
LpA =35dB
25
20
LpA =30dB
16
14
12
10
8
7
3
0.025 0.03 0.04 0.05 0.06 0.08 0.1 0.12 0.16 [m /s]
100
200
300
500 m3/h
L0,2 (m)
0,5 0,8
1,4
Hz
Kok
tol.
4000
-16
±4
Ps (Pa)
Ps (Pa)
250
1
±3
500
2
±2
1000
1
±2
1000
-5
±2
2000
-19
±3
4000
-26
±5
2000
-7
±3
LpA =45dB
LpA =40dB
30
25
LpA =35dB
20
LpA =30dB
16
14
12
10
8
7
3
0.03 0.04 0.05 0.06 0.08 0.1 0.12 0.16 0.2 [m /s]
100
200
300
500 700 m3/h
L0,2 (m)
1,4
4000
-16
±4
Damper open
Damper 1/2 closed
30
LpA =40dB
25
LpA =35dB
20
16
LpA =30dB
14
12
10
8
7
0.025 0.03 0.04 0.05 0.06 0.08 0.1 0.12 0.16 [m3/s]
100
200
300
500 m3/h
0,5 0,8
500
4
±2
60
50
40
LpA =45dB
125
-2
±3
250
7
±4
Damper open
60
50
40
Hz
Kok
tol.
125
-2
±6
Spigot Ø 250 mm Unit width 500 mm
Hood height 540 mm.
Spigot Ø 160 mm Unit width 200 mm
Hood height 540 mm.
Damper 1/2 closed
LpA =45dB
Ps (Pa)
LpA =40dB
30
LpA =35dB
25
20
LpA =30dB
16
14
12
10
8
7
3
0.025 0.03 0.04 0.05 0.06 0.08 0.1 0.12 0.16 [m /s]
100
200
300
500 m3/h
0,5
Damper open
60
50
40
0,5 0,8
Hz
Kok
tol.
125
6
±3
250
8
±3
500
4
±2
1000
-5
±2
1,4
2000
-10
±3
L0,2 (m)
4000
-18
±4
The sound power level (Lw) in each octave band is computed by adding the corresponding factor Kok
to the sound pressure level (LpA), as in Lw = LpA + Kok
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Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
JSI-UV hoods
www.jeven.co.uk
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
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.
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
Number of cyclones
4 5 6 78
120
100
Ps (Pa)
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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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
Power of
the UV-lamps
6x39W=234W
6x39W=234W
6x39W=234W
6x39W=234W
6x39W=234W
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 are always the
same.
Kok factor
Hz
Kok
tol.
125
6
±3
250
5
±3
500
4
±2
1000
-2
±2
2000
-9
±3
4000
-16
±4
JSI-UV hoods
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
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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 oxidised 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.
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8
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
JSI-UV hoods
www.jeven.co.uk
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.
We reserve the right to make changes
to products without prior notice
Phone: 0121 697 47 07
Email: jeven@jeven.co.uk
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