AL-KO Prospekt Zuluftdecken Engl

8/9/2019 AL-KO Prospekt Zuluftdecken Engl

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SUPPLY-AIR-CEILING

FOR OPERATING THEATRES

SUPPLY-AIR-CEILING


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SeriesAL-KO Supply-Air-Ceilings

State-of-the-art – solutions

I low germ number in the operating

area and in the supply air flow

I low germ sedimentation

I low air speeds in the working area

I low harmful gas concentration also

in the anaesthetics work area

I good screening of the operating area

in case of disturbances by opening

doors

I minimum requirements according

to DIN 1946/4 are exceeded by far

I examination according to DIN 4799

by the Hermann Rietschel Institute

of the TU Berlin

I contamination-proof sealing of the

operating theatre light fixture

I low disinfection and maintenanceexpenditure

3

System description

Results of the inquiry concerning the degree of contamination

of a Supply-Air-Ceiling-System with Size 1.8m x 2.4 m:

• Degree of contaminationDegree of contamination (exponential)

Prof. Dr.-Ing. K. Fitzner – University of Technology Berlin

H. Rietschel – Institute of heating engineering and air-conditioning technology

Degree of contamination (µs) / Air velocity (m/s)

0.4 µs

0.3 µs

0.2 µs

0.1 µs

0.0 µs

0.15 m/s 0.20 m/s 0.25 m/s 0.30 m/s


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The low, predominantly laminar air

velocity at the patient’s location must

be emphasised from the medical point

of view. The cooling down of the patient

is less than with turbulent flow systems.

The ceiling system is disinfectantresis-

tant and consists of a large output field,

equipped with patented laminarisators.

These consist of aluminium frames

covered with flow-optimised special

profiles with minimised frame width,

covered with a tear-proof, monofilament

polyester tissue.

The laminarising effect practically

excludes a secondary air contamination.

The support leadthrough is aerodynami-

cally designed, so that no wake areas orflow deflections occur. Installation

tolerances of the ceiling and support

can be compensated at the same time.

The HEPA-filter units in stable mounting

The AL-KO Supply-Air-Ceiling for oper-

ation theatres Type AL is a supply air

system with constant laminar flow for

all types of operating theatre. It is

characterised by particularly low germ

numbers in the operation field and low

harmful gas concentrations in theworking area of the operation team

with a high thermal comfort. The AL-KO

Supply-Air-Ceiling fulfils requirements

necessary for cleanroom technology.

4

frames with clamping device, test

groove for the seal fit examination and

measuring connecting pieces are well

accessible, easy to assemble and

exchange without special tools. The

maintenance work can be accomplished

within the AL-KO Supply-Air-Ceiling

without intervention into the room

ceiling. Easy connection to the duct

system by duct flanges.

Manually adjustable or dampers with

actuators are available as an option.

Supply air box and ceiling housing are

made of galvanised steel with disinfect-

antresistant coating or of stainless

steel, material No. 1.4301. The AL-KO

Supply-Air-Ceiling, type AL, also fulfilsthe requirement of low germ numbers in

the operation area in spite of high thermal

loads. The contamination degree of less

than 0.1 is substantially lower than the

General explanation for series AL-KO Supply-Air-Ceilings


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minimum requirement of JJLS=0.67

according to DIN 1946/4 for operating

theatres of the type A, highly aseptic.

The examination according to DIN 4799

was accomplished by the Hermann Riet-

schel lnstitute for Heating and Air-Con-

dition Technology of the Technical

University of Berlin. The outstanding

temporal particle reduction characteris-

tic of the laminar flow system protects

the patient against air germs much

better than operating theatre supply

air systems with turbulent mixed flows.

Only the operating theatre supply air

ceiling with laminar displacement flow

offers protection, since the socalled

protection retention cannot preventparticle entry from adjacent areas in ope-

rating theatres with several closed doors

or with open doors. It ensures low

contamination in the working field.

A further benefit in comparison to tur-

bulent flow ceilings is the fact that the

germ sedimentation is much lower in

the laminar flow.

The AL-KO Supply-Air-Ceiling, type AL,

therefore ensures optimal protection

against infections for the patient.

1022a

4848

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2020

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64

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66 545422a

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3030

2626

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Abstract of patent


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6

DESIGN CRITERIA FOR AL-KO SUPPLY-AIR-CEILINGS

Central and decentralized systems

Type AL-S

with verticalfi

lters

Type AL-H

with horizontal filters

Type AL-PA

for pathology

Central

Centralized Air Handling Unit

within the technical room fortotal supply of the OP-theatre

Decentral

Decentralized system with outside air

intake AHU, exhaust AHU and circula-tion AHU (as various options are

possible, only one schematic drawing

is shown)


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AL-KO Supply-Air-Ceilingtype AL-S

7

AL-KO Supply-Air-Ceiling with vertical filters type AL-S

Smooth internal surfaces without corners and edges

Easy and safe maintenance of filters including test

procedure for tightness

Lamp shaft with maintenance plate for better sevice

Operation lamp for installation through OP-Ceiling


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8

Technical data with sizes and dimensions type AL-S

Length L

Size for damper orduct connection

Size for damper orduct connection

a a

W i d t h B

1 7 5

View from below

View from above

Lamp opening

500 / 600

Item no. Type Scheme Length Width Air-volume Pressure loss Weight Duct connection

L B 0.20 m/s 0.25 m/s 0.20 0.25 kg St. a b

mm mm m3 / h m3 / h Pa Pa mm mm

1 24124 2 400 1 200 2 074 2 592 186 233 170 2 873 263

2 24144 2 400 1 400 2 419 2 024 215 269 190 2 873 263

3 24184 2 400 1 800 3 110 3 888 212 265 235 4 568 263

4 30184 2 400 1 800 3 888 4 860 210 262 270 4 720 263

5 24244 2 400 2 400 4 147 5 184 202 253 295 2 720 263

2 873 263

6 30244 3 000 2 400 5 184 6 480 201 251 320 4 568 263

2 873 263

HEIGHT H = 400 MM


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Access

Panel

5 0

H

4 0 0

b 2 6 3

( b 1 6 1 )

( H

3 0 0 )

Item no. Type Scheme Length Width Air-volume Pressure loss Weight Duct connection

L B 0.20 m/s 0.25 m/s 0.20 0.25 kg St. a b

mm mm m3 / h m3 / h Pa Pa mm mm

1 24123 2 400 1 200 2 074 2 592 182 227 175 4 720 161

2 24143 2 400 1 400 2 419 2 024 210 262 195 4 720 161

3 24183 2 400 1 800 3 110 3 888 210 262 240 4 568 161

2 720 161

4 30183 3 000 1 800 3 888 4 860 210 263 280 4 720 161

2 873 161

5 24243 2 400 2 400 4 147 5 184 210 263 305 2 720 161

4 873 161

6 30243 3 000 2 400 5 184 6 480 204 255 330 4 720 161

4 873 161

Options:

I Casing made out of galvanized

steel with painting (resistant

against disinfection) or stainless

steel 1.4301

I Filter frame made out of reinforcedfiber material or galvanized steel

I Duct connections with or without

airtight dampers with actuators

HEIGHT H = 300 MM


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10

Tendertext type AL-S

Supply-Air-Ceiling for operating theatresParticularly suitable for generating a laminar clean air

flow, while avoiding secondary air contamination, for the

creation of a sterile operating area, complying with the

test report according to DIN 4799, for ceiling-flush

installation, in a flat design, consisting of:

Ceiling housingas a pressure box according to the over-pressure principle

to prevent leak air flows, housing ready for assembly,

suitable for transportation through normal doors

Material ceiling housing and filter frame:

Galvanised steel sheet with

disinfectantresistant coating

Stainless steel, material No. 1.4301

HEPA-filterAccording to DIN EN 1822, class H13 with both-way handle

protection, on stable mounting frame with clamping device

and test groove for the filter seal fit examination, complete

with pressure measuring connecting piece, Frame material:

Medium densified fibre board

Aluminium

LaminarisatorsAccording to the European patent 0 355 517 B1, as large-

area ceiling panels, whose good laminarising characteristics

almost exclude a secondary air contamination, consisting

of aluminium frames with minimised frame width, without

lee areas between the ceiling panels, with a monofilament

polyester tissue covering, flame and disinfectant-resistant,

colour white, simple disassembly of the air distribution

frame without tools.

= Optional, please select

Support leadthroughAerodynamically designed to avoid airflow disturbances

to a large extent and thus contamination, built in dead

centre into the air outlet, with tolerance compensation

for the support position.

Accessories Duct connecting piece made of galvanised steel sheet

Galvanised airtight damper according to DIN 1946-4,

manually operated

Airtight damper with electrical servo motor

with spring return

Airtight damper with pneumatic servo motor

Pressure monitoring with remote display

Spare filters

Basic lighting

Performance and dimensionsSupply air volume flow m3 /h

Exit speed m/s

Air resistance (Start) Pa

Length x Width mm

Height mm

Weight kg

Number and dimensions of the filters mm

Number and dimensions of the connecting pieces mm

Delivery and assembly including all auxiliary material, as

well as accomplishment and recording of the acceptance

inspection according to DIN 1946 Bl. 4 paragraph 10.2.2

(Edition 03/99)

Manufacturer AL-KO THERM GmbH

Type AL-S


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AL-KO Supply-Air-Ceilingtype AL-H

11

Supply-Air-Ceiling with horizontal filters type AL-H

Supply-Air-Ceiling AL-H with media supply Typical design of AL-H with air guiding

curtains and media supply

Filter frame: stainless steele

Laminarisator with HEPA filter HEPA filter Closed laminarisator


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AL-KO Supply-Air-Ceilingtype AL-H

12

Technical data with sizes and dimensions type AL-H

1 2626 415 175 800 520 340 800 415 504 710 2 660 2 660 5 095 6 370 618 508 315

2 2828 415 175 900 520 340 900 415 504 800 2 810 2 810 5 685 7 110 768 658 360

3 2929 415 175 1 000 520 340 1 000 415 669 710 2 960 2 960 6 310 7 885 618 508 400

4 3030 415 175 1 120 520 340 1 120 415 669 800 3 055 3 055 6 720 8 400 660 660 440

5 3232 415 175 1 250 520 340 1 250 415 834 710 3 265 3 265 7 675 9 595 636 564 520

Scheme 1 Scheme 2+3 Scheme 4 Air-volume

Item Type Length Width Pressure loss Lamp Weight

no. 100 Pa opening

0.20 0.25

H h b H h b H h b L B m/s m/s c d

mm mm mm mm mm mm mm mm mm mm mm m3 /h m3 /h mm mm kg

Partial deliveryPartial delivery

abh

bh

A

35 35

B

Cut A / B

3 0

h

H

B

c

d

35 35B

3 5

1 7 5

L

TYPE AL-H


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Supply-Air-Ceiling for operating theatresParticularly suitable for generating a laminar clean air

flow, while avoiding secondary air contamination, for the

creation of a sterile operating area, complying with the

test report according to DIN 4799, for ceiling-flush

installation, in a flat design, consisting of:

Ceiling housingAs a pressure box according to the over-pressure principle

to prevent leak air flows, housing ready for assembly,

suitable for transportation through normal doors.

Material ceiling housing and filter frame:

Galvanised steel sheet with disinfectantresistant coating

Stainless steel, material No. 1.4301

HEPA-filterAccording to DIN EN 1822, class H13 with both-way handle

protection, on stable mounting frame with clamping device

and test groove for the filter seal fit examination, complete

with pressure measuring connecting piece.

Frame material:

Medium densified fibre board

Aluminium

LaminarisatorsAccording to the European patent 0 355 517 B1, as large-

area ceiling panels, whose good laminarising characteristics

almost exclude a secondary air contamination, consisting

of aluminium frames with minimised frame width, without

lee areas between the ceiling panels, with a monofilament

polyester tissue covering, flame and disinfectant-resistant,

colour white, simple disassembly of the air distribution

frame without tools.

= Optional, please select

Support leadthroughAerodynamically designed to avoid airflow disturbances

to a large extent and thus contamination, built in dead

centre into the air outlet, with tolerance compensation

for the support position.

Accessories Duct connecting piece made of galvanised steel sheet

Galvanised airtight damper according to

DIN 1946-4, manually operated

Airtight damper with electrical

servo motor with spring return

Airtight damper with pneumatic servo motor

Pressure monitoring with remote display

Spare filters

Basic lighting

Performance and dimensionsSupply air volume flow m3 /h

Exit speed m/s

Air resistance (Start) Pa

Length x Width mm

Height mm

Weight kg

Number and dimensions of the filters mm

Number and dimensions of the connecting pieces mm

Delivery and assembly including all auxiliary material, as

well as accomplishment and recording of the acceptance

inspection according to DIN 1946 Bl. 4 paragraph 10.2.2

(Edition 03/99)

Manufacturer AL-KO THERM GmbH

Type AL-H

Tendertext type AL-H


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AL-KO Supply-Air-Ceilingtype AL-PA

14

AL-KO Supply-Air-Ceiling for pathology and anatomytype AL-PA

View from below View from above

300

1800

4 0 0

3 0 0

8 0 0

3 0 0

300


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DescriptionThe Supply-Air-Ceiling Type AL-PA ensure a continuous

laminar flow for the total area according to DIN1946-4

(March 1999). This warranties optimum working condi-

tions as f.e. protection against infection and a bet ter

thermal comfort. The particles and the amount of gaswill be reduced. Also the required values for MAKguide-

lines are ensured. The installation of the ceiling and the

fitting of lighting devices can be done very easily.

Technical dataAir supply volume 1 040 m3 /h

Air velocity 0,2 m/s

Pressure loss 25 Pa

Value of contamination according to:

DIN 1946-4 > 01Temperature difference R - tZU


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Air guiding curtains

16

Air guiding curtains

Air curtains are stabilizing the laminar

flow, minimizing the entry of germs

and enlarging the entire zone. Curtains

are most efficient if the air supply field

is close to the curtain and the length

of the curtain is done accordingly.

Air curtains are mechanically strong,

resistant against desinfection liquids

and protected against scratches. There-

fore special glass need to be used.

LS-VR

Air curtain 8 mm safety glass, for suspended

installation, framed with aluminium profiles.

LS-VB

Air curtain 8 mm safety glass for suspended

installation with profile, gaps are sealed.

LS-VF

Air curtain with 8 mm safety glass, fixed at

the Media Supply Elements gaps are sealed.


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Separator for slubs

18

Separatorfor slubs

Separators protecting the ducts and

the components against sedimentation

and provide better economic and

service operation of the entire air

handling system. There are various

solutions for ceiling and wall installa-tion available.

Installation types RAC-A/E and RAC-D:

2.5A/B

25

1 6 . 5

A/B

25

1 7 . 5

1A/B

2520

1 6 . 5

Application AFL-E

Construction type RAC-E

Application AFL-A

Construction type RAC-A

Wall installation type RAC-A

Application AFL-Z

Construction type RAC-Z

Ceiling installation type RAC-D

DRAWINGS


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Air-handling-units for hygienic application

20

AT4 AHU for hygienic application

The VDI guideline 6022,

part 1 and 3…

… defines the hygienic requirements

for AHU with regard to:

I planning

I design

I operation

I service

I maintenance…

… according to highest technical

standard

… represents a qualified hygienic

standard providing planning security

and avoidance of problems

AL-KO AHU comply to these

requirements.

We recommend a design check

(Institut für Lufthygiene)

Complies with all national and European standards

2 0 0 7 - 2 0

1 0

CONFORMITY


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General requirements of VDI 6022

for manufacturers of AHU:

I all materials must comply with health

requirements and prevent microbio

logical growth

I sandwich panel construction

I low condensation tendency

I smooth internal surfaces

I grooves easily cleanable

I bottom panel surface powder coated

or made in stainless steel

I all units and components are easily

accessible and equipped with lighting

where necessary and sight glasses

(possible to darken)

I continuous and complete condensate-

drainage

I use of fans with access for cleaning

I sealing materials must be closed-cell

type and not absorb moisture, give out

odours or form a nutritive medium for

microorganisums

I hygienically appropriate manufacture,

transportation and intermediate

storage at the place of installation


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Air-handling-units for hygienic application

22

AL-KO solutions

1 Construction

I Providing enough maintenance space

I Consideration of excellent air flow

conditions for connections and air

dampers

I The outside air dampers have to

be installed internally to avoidcondensation

I A drain pan under outside air filter

ensure better cleaning

I All relevant components are available

either fully powder coated or in stain-

less steel

I Various design for all applications with

AL-KO software Klima@Soft

Examples

I Place silencer immediately down-

stream the fan, eliminator always

behind cooler. Alternative: Fan and

cooler in the direction of air flow

I The use of a direct driven fan or a fan

with flat belt drive requires only filterclass F7 for the supply air

Not approved (e. g.)

I Filter or silencer downstream a

humidifier

I Cooling coil without eliminator

2 Housing construction

I Sandwich panels

I No condensation tendency (category

T3 / TB 3 or T2 / TB 2)

I Smooth internal surfaces without

corners and edges

I Powder coated panels or internalpanels in stainless steel

I Avoidance of corrosive tin-plated

panel surfaces with unprotected

cutting edges

I Door and panel seals are foamed

seamlessly, have a high densit y,

and are non-ageing

I All sections are easily accessible, have

the necessary lighting, access doors,

and sight glasses

I Possibility of cabling mainly outside

the casing: no additional dirty corners

1 1 2 2


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3 Filter

Filter construction:

I Microbiological inert filter materials

I Only use of closed - cell type sealing

I Mechanically sufficiently stable

materials even during humidity

I Filter differential pressure controloptically or electrically as standard

I Use of quality filters with test

certificates

Filter installation:

I Correct installation of filter to prevent

mechanical stress on the filter medium

I Filter maintenance with easy access by

using filter quick snap device

I Cleanable filter section optional with

drain pan

4 Sealing materials

All used materials

I have been tested extensively

I prevent microbacterial growth

I are resistant to disinfectants

I permit physical and chemical

disinfection

5 Fans

Prevention of belt wear through:

I use of direct driven fans (plug fans)

I use of flat belts for belt driven fans

Casing with water drainage and cleaning

access (from size 400 onwards)

3 4 5


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AL-KO THERM GmbH

Hauptstraße 248-250

89343 Jet tingen-Scheppach

Phone (+49) 8225 / 39- 176

Fax (+49) 8225 / 39- 55176

E-mail [email protected]

www.al-ko.com

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