Top ventilation for top chefs

JCE hoods

The Jeven JSI hood has been designed for kitchens where a comfortable, productive and healthy indoor climate is required.
JSI offers draught-free ventilation with first-class working conditions and thermal comfort.

The JSI hood is equipped with exhaust, supply and direction air, with damper plates and measurement taps.

JCE filter unit

PRODUCT STRUCTURE

  1. Grease filters and measurement tap for the exhaust air
  2. Direction air unit with measurement tap for the supply air
  3. LED lights
  4. Exhaust air connection and damper plates
  5. Supply air unit with removable front panel
  6. Supply air connection and damper unit

Light

By default, every hood module comes with an energy efficient LED light fixture integrated to the hood’s roof.

The light fixture has a cable which should be connected to a junction box with a cable lock. The connection cable must be positioned in such way that it is not exposed to mechanical or thermal stress.

IP 66 integrated LED lamp
4000 K, CRI>84
incl. 2 m HF-connection cable (Halogen Free, type 3×1,5 mm²)

FUNCTIONING PRINCIPLE

JSI-R

  1. Dirty air rises due to temperature differences against the ceiling of the hood.
  2. Grease particles and dirt are removed in the filter
  3. Clean air is exhausted
  4. Supply air is introduced through the supply air columns
  5. The air pattern can be adjusted at the column
  6. Direction air prevents leakage and directs heat and particles towards grease filters

JLI-R

TECHNICAL INFORMATION - EXHAUST AIR

The recommended exhaust airflow rate is max. 340 l/s per 315 mm spigot, with a duct velocity of 4.4 m/s. By default, the canopies come with a suitable number of filter units so that the pressure level will be between 40 and 60 Pa. The nominal airflow of the filter units is 60 l/s per filter module.

Recommended exhaust flow/spigot

Spigot size øExhaust flow
mml/sm³/h
20040-140145-500
315140-340500-1225
400340-5301225-1910

Grease filter extraction rate

Standard VDI 5052 Blatt 1/ Part 1

Removal efficiency

Supply air hood is equipped with direction air that effectively prevent impurities from escaping from the hood. The 94-97 %  capture rate is measured by the NORDTEST method NT / VVS 088.

Measurement results:

Capture rate as a function of exhaust air flow. Inlet + control air flow 250-280 l/s


Pressure loss and sound data

Sound Power level, Lw

Sound power level Lw in each octave band is computed by adding the corresponding factor, Kok to the sound power level LpA.
Lw= LpA+Kok.

Factor, Kok

Hz125250500100020004000
Kok654-2-9-16
tol.±3±3±2±2±3±4

Sound attenuation

Exhaust
JCE-2, spigot= ø 200 mm. Sound attenuation, (dB)

Hz125250500100020004000
"Damper closed"1277101010
"Damper open"1166665

Exhaust
JCE-4, spigot= ø 315 mm. Sound attenuation, (dB)

Hz125250500100020004000
"Dumper closed"354111010
"Damper open"243647

The average sound attenuation includes the end reflection of the connection spigot.
It is recommended to use “damper open” values when calculating sound attenuation.


Adjustment and measurement

K-factor exhaust

Number of filter units1 piece2 pcs.3 pcs.4 pcs.5 pcs.6 pcs.7 pcs.8 pcs.
K1 (m³/h) 34,6 72,4 104 141 176 207 245 282
K2 (l/s) 9,62 20,1 28,8 39,2 48,9 57,6 68,0 78,4
            Q=Kx√Pm       Pm=(Q/K)²Pa 

TECHNICAL INFORMATION - SUPPLY AIR

The canopies are supplied from the factory with suitable air flow rates for a pressure level of 25-35 Pa.

Hood heightSupply air unit width, B
mm200 mm500 mm
330-50-90 l/s
54040-70 l/s100-150 l/s

Pressure loss, sound data and throw length/supply air unit

Spigot ø200 mm.
Unit width 500 mm. Hood height 330 mm. Measurement after 90° curve.

Hz125250500100020004000
Kok-274-5-19-26
tol.±6±4±2±2±3±5

Spigot ø160 mm.
Unit width 200 mm. Hood height 540 mm. Measurement after 90° curve.

Hz125250500100020004000
Kok-2121-7-16
tol.±3±3±2±2±3±4

Spigot ø250 mm.
Unit width 500 mm. Hood height 540 mm. Measurement after 90° curve.

Hz125250500100020004000
Kok684-5-10-18
tol.±3±3±2±2±3±4

The sound power level (Lw) in each octave band is computed by adding the corresponding factor Kok to the sound pressure level (LpA),  Lw= LpA+Kok


Supply air blow alignment

Jeven supply air columns deliver a controlled and flexible distribution of the supply air. It is possible to wash the supply air columns in a dishwasher and the inside of the supply air chambers is easy to clean. These columns allow an individual adjustment of air patterns and air flows, which means a better indoor climate for the kitchen staff.

Horizontal alignment of the supply air
The supply air blow direction can be aligned left or right by moving the air control plates inside the supply air units. The control plates are marked in red in the pictures.

Vertical alignment of the supply air
The supply air blow direction can be aligned up or down by turning the horizontal air control plates inside the supply air units. The control plates are marked in red in the pictures.

Air blow directions alignment nearby supply air column
Supply air blowing direction can be aligned by turning the rotatable blowing nozzles at the bottom of the supply air column. The rotatable nozzles are marked in red in the pictures.


Sound attenuation, dB

Hood heightSpigot125 Hz250 Hz500 Hz1000 Hz2000 Hz4000 Hz
330 mmø200171010111824
540 mmø1602485121724
540 mmø2501697111623

Adjustment and measurement

K-factor supply air

 Width, mm 200 200 500 500
 Height, mm 290 500 290 500
 K1 (m³/h) 45,0 77,0 96,0 192
 K2 (l/s) 12,5 21,4 26,7 53,3
 Q=Kx√Pm       Pm=(Q/K)²Pa    

Product info

  • JCE Hoods

    Product Brochure

Accessories

Covering boards
Covering boards to enclose the area between the top of the hood and the ceiling.

Product code

JSI – R3000x1500x540 – 6×250 – 3×315750 l/s – 850 l/s – CBFP

  • Jeven JCE hoods come equipped with cyclonic JCE grease filters and integrated LED lights.
  • The hood’s base material is stainless steel AISI 304.

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