EP0375734A1 - An air conditioning apparatus, especially for regulating the flow of cold and warm air or a mixture thereof - Google Patents

An air conditioning apparatus, especially for regulating the flow of cold and warm air or a mixture thereof

Info

Publication number
EP0375734A1
EP0375734A1 EP88908232A EP88908232A EP0375734A1 EP 0375734 A1 EP0375734 A1 EP 0375734A1 EP 88908232 A EP88908232 A EP 88908232A EP 88908232 A EP88908232 A EP 88908232A EP 0375734 A1 EP0375734 A1 EP 0375734A1
Authority
EP
European Patent Office
Prior art keywords
elements
air
mixer
cold
side walls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP88908232A
Other languages
German (de)
French (fr)
Inventor
Carl-Gustav Palander
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PALANDER CARL GUSTAV
Original Assignee
PALANDER CARL GUSTAV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PALANDER CARL GUSTAV filed Critical PALANDER CARL GUSTAV
Publication of EP0375734A1 publication Critical patent/EP0375734A1/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
    • F24F3/048—Systems in which all treatment is given in the central station, i.e. all-air systems with temperature control at constant rate of air-flow
    • F24F3/052—Multiple duct systems, e.g. systems in which hot and cold air are supplied by separate circuits from the central station to mixing chambers in the spaces to be conditioned
    • F24F3/0522—Multiple duct systems, e.g. systems in which hot and cold air are supplied by separate circuits from the central station to mixing chambers in the spaces to be conditioned in which warm or cold air from the central station is delivered via individual pipes to mixing chambers in the space to be treated, the cold air/warm air ratio being controlled by a thermostat in the space concerned, i.e. so-called Dual-duct System
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/04—Air-mixing units

Definitions

  • An air conditioning apparatus especially for regulating the flow of co l d and warm air or a mixture thereof.
  • the invention relates to an air conditioning apparatus, especially for regulating the flow of cold 5 or warm air or a mixture thereof, comprising inflow openings for cold and warm air and at least one out ⁇ flow opening, a mixing space positioned therebetween, and a device provided in the mixing space for regulat ⁇ ing the flow of cold or warm air or a mixture thereof 0 and the amount of air to be introduced into a space to be conditioned.
  • the object of the present invention is to pro ⁇ vide an air conditioning apparatus which avoids the above-mentioned drawbacks, enabling an accurate and reliable regulation of conditioning air by means of a considerably simpler structure than previously. This object is achieved by means of an apparatus according to the invention, which is characterized in that
  • the mixing space comprises a regulating de ⁇ vice disposed in a mixer ; ' ⁇
  • the regulating device comprises two elements adjustable in relation to each other;
  • the elements are adjustable by means of a common shaft.
  • the air conditioning apparatus is based on the idea that the regulation of the cold and the warm air flow or a mixture thereof as well as the regulation of the flow volume, i.e., the amount of air per time unit, is carried out by means of a single device. This implies that the pressure re ⁇ gulation is effected by said device in the mixer be- fore the air is passed into the proper mixing space.
  • the structure of said device is simple and therefore less space is required.
  • the device comprises two el ⁇ ements which are positioned on a common shaft. So the adjustment of the air conditioning apparatus is easy to carry out from outside the apparatus itself through the shaft arrangement, which also makes it easier to connect the apparatus to an electronic regulation system. The maintenance of the apparatus is easy and the operation is silent.
  • Figure 1 is schematical view of one embodiment of an air conditioning apparatus in connection with a cold and warm air duct and a space to be conditioned
  • Figure 2 is a schematical view of another em ⁇ bodiment of the air conditioning apparatus
  • Figure 3 illustrates generally the adjustment of the air conditioning apparatus of Figure 1; and Figure 4 illustrates generally the adjustment of the air conditioning apparatus of Figure 2.
  • the air conditioning system thereby generally comprises e.g. two high-pressure ducts, i.e., a cold and a warm air duct, with intake ducts for each cabin or some other space to be conditioned.
  • the tempera ⁇ tures and the pressures in the ducts are known. From now on, the space to be conditioned will be referred to as a cabin and the intake ducts as cold and warm air ducts.
  • the cabin is designated with the reference numeral 13.
  • Cold and warm air ducts 1 and 2 communicate with a mixer 3 disposed in a mixing space 3" and comprising side walls 4 and 5.
  • the side walls are in the form of a broken circle.
  • a regulating de ⁇ vice 6, 7, 8 is provided in the mixer adjacent to connections 11 and 12 for the cold and warm air ducts.
  • the regulating device comprises a baffle formed by two substantially uniform blades 6 and 8 which are mounted in bearings on a common shaft 7.
  • the shaft is coaxial with the center of curvature of the side walls 4, 5.
  • From the mixing space 3" the air is passed on through an outlet 9 and a diffusor 10 into a cabin 13.
  • the arrangement is in principle similar to that described in connection with Figure 2.
  • the mixing space 3" is provided with a mixer 3' formed, e.g., by a cylinder having the connections 11 and 12 for the cold and warm air ducts in the ends thereof.
  • the mixer is provided with an outflow opening A' through which air flows out.
  • the regulating device comprises two piston-shaped elements 6', 8" which are mounted coaxially in bearings on a shaft 7' . The u- tual spacing of the elements is adjustable.
  • FIG. 3 illustrates generally the adjustment of the air conditioning apparatus of Figure 1. It is obvious that the adjusting procedure may differ from that shown in the figure. The adjustment takes place at four stages I - IV.
  • the blades 6 and 8 of the baffle 6, 7, 8 are released from the shaft 7 and positioned at an angle ccl with respect to each other so that each blade is positioned against the end of the respective side wall 4 and 5, whereby the outflow opening A is completely closed.
  • the blades are locked mechanically with re ⁇ spect to each other in this position (position I).
  • th& regulating device is pivoted towards the cold air duct 1.
  • the blade 8 is released from the shaft 7 and locked relative to the side walls (po- sition II).
  • the baffle or, more precisely, the blade 6 thereof only, is then pivoted towards the warm air duct 2.
  • Figure 4 illustrates generally the adjustment • of the air conditioning device of Figure 2.
  • the prin ⁇ ciple is similar to that described above.
  • the dif- ference lies mainly in that the piston-shaped elements are displaced in the axial direction relative to each other and to the mixer for obtaining the desired re ⁇ sult.
  • the adjustment and regu ⁇ lation of the baffle and the piston elements can be automated by shifting motors and electronic control systems.

Abstract

L'appareil de climatisation décrit, qui est destiné en particulier à réguler le flux d'air froid et d'air chaud ou d'un mélange d'air froid ou d'air chaud, comprend des ouvertures d'entrée (11, 12) pour l'air froid et l'air chaud et au moins une ouverture de sortie (9), un espace de mélange (3") compris entre les deux ouvertures et un dispositif placé dans l'espace de mélange et servant à réguler le flux d'air froid ou d'air chaud ou d'un mélange d'air froid et d'air chaud ainsi que la quantité d'air à introduire dans un espace à climatiser. Afin d'éviter le recours à une structure compliquée occupant beaucoup d'espace et afin de simplifier la régulation, un mélangeur (3) disposé dans l'espace de mélange (3") comprend deux parois latérales (4, 5) ayant la forme d'un cercle brisé et un dispositif régulateur (6, 7, 8) disposé dans le mélangeur et comprenant un arbre et deux éléments (6, 8) réglables à leurs extrémités l'un par rapport à l'autre. Les arbres des éléments sont disposés coaxialement par rapport au centre de courbure des parois latérales et les parties terminales libres des éléments sont conçues pour être plaquées contre les parois latérales lorsqu'elles sont dirigées vers celles-ci.The air conditioning apparatus described, which is intended in particular to regulate the flow of cold air and hot air or a mixture of cold air or hot air, comprises inlet openings (11, 12 ) for cold air and hot air and at least one outlet opening (9), a mixing space (3 ") between the two openings and a device placed in the mixing space and used to regulate the flow of cold air or hot air or a mixture of cold air and hot air as well as the quantity of air to be introduced into a space to be conditioned In order to avoid the use of a complicated structure occupying a lot of space and in order to simplify the regulation, a mixer (3) arranged in the mixing space (3 ") comprises two side walls (4, 5) having the shape of a broken circle and a regulating device (6 , 7, 8) arranged in the mixer and comprising a shaft and two elements (6, 8) adjustable at their ends relative to each other. The shafts of the elements are arranged coaxially with respect to the center of curvature of the side walls and the free end portions of the elements are designed to be pressed against the side walls when they are directed towards them.

Description

An air conditioning apparatus, especially for regulating the flow of cold and warm air or a mixture thereof.
The invention relates to an air conditioning apparatus, especially for regulating the flow of cold 5 or warm air or a mixture thereof, comprising inflow openings for cold and warm air and at least one out¬ flow opening, a mixing space positioned therebetween, and a device provided in the mixing space for regulat¬ ing the flow of cold or warm air or a mixture thereof 0 and the amount of air to be introduced into a space to be conditioned.
In such a prior air conditioning apparatus, cold and warm air are introduced through separate ducts provided with separate control means. As a con- 5 sequence, cold and warm air flows have to be con¬ trolled separately and in such a way that the tempera¬ ture and volume of the air flow obtained are such as desired. Furthermore, such an apparatus is very com¬ plicated in structure and requires dismounting from 0 within the space to be conditioned during adjustment. The complicated structure also causes disturbing noise.
In another corresponding apparatus attempts have been made to simplify the structure by regulating temperature and volume at two separate stages. The temperature regulation takes place by means of a simple baffle provided between the warm and the cold air duct. When the baffle is pivoted towards the cold(warm) air duct, the cold(warm) air flow is de- creased and the warm(cold) air flow is increased. Thereafter the volume of the air flow is regulated by means of a separate throttle means. This structure re¬ quires plenty of space. Furthermore, as the pressure in the cold air duct may be considerably higher than the pressure in the warm air duct, or vice versa. practice has shown that return flow to either duct may occur. This is due to the fact that the air flow seeks the "easiest" way out, that is, not in the direction towards the throttle means. The object of the present invention is to pro¬ vide an air conditioning apparatus which avoids the above-mentioned drawbacks, enabling an accurate and reliable regulation of conditioning air by means of a considerably simpler structure than previously. This object is achieved by means of an apparatus according to the invention, which is characterized in that
- the mixing space comprises a regulating de¬ vice disposed in a mixer ; '■
- the regulating device comprises two elements adjustable in relation to each other; and
- the elements are adjustable by means of a common shaft.
The air conditioning apparatus according to the invention is based on the idea that the regulation of the cold and the warm air flow or a mixture thereof as well as the regulation of the flow volume, i.e., the amount of air per time unit, is carried out by means of a single device. This implies that the pressure re¬ gulation is effected by said device in the mixer be- fore the air is passed into the proper mixing space. The structure of said device is simple and therefore less space is required. The device comprises two el¬ ements which are positioned on a common shaft. So the adjustment of the air conditioning apparatus is easy to carry out from outside the apparatus itself through the shaft arrangement, which also makes it easier to connect the apparatus to an electronic regulation system. The maintenance of the apparatus is easy and the operation is silent. In the following two preferred embodiments of the invention will be described in more detail with reference to the attached drawings, wherein
Figure 1 is schematical view of one embodiment of an air conditioning apparatus in connection with a cold and warm air duct and a space to be conditioned; Figure 2 is a schematical view of another em¬ bodiment of the air conditioning apparatus;
Figure 3 illustrates generally the adjustment of the air conditioning apparatus of Figure 1; and Figure 4 illustrates generally the adjustment of the air conditioning apparatus of Figure 2.
In the following description of the embodi¬ ments, it is assumed that the apparatus according to the invention is used for ventilating cabins on a ship. The air conditioning system thereby generally comprises e.g. two high-pressure ducts, i.e., a cold and a warm air duct, with intake ducts for each cabin or some other space to be conditioned. The tempera¬ tures and the pressures in the ducts are known. From now on, the space to be conditioned will be referred to as a cabin and the intake ducts as cold and warm air ducts.
In Figure 1, the cabin is designated with the reference numeral 13. Cold and warm air ducts 1 and 2 communicate with a mixer 3 disposed in a mixing space 3" and comprising side walls 4 and 5. The side walls are in the form of a broken circle. A regulating de¬ vice 6, 7, 8 is provided in the mixer adjacent to connections 11 and 12 for the cold and warm air ducts. The regulating device comprises a baffle formed by two substantially uniform blades 6 and 8 which are mounted in bearings on a common shaft 7. The shaft is coaxial with the center of curvature of the side walls 4, 5. From the mixing space 3" the air is passed on through an outlet 9 and a diffusor 10 into a cabin 13. In Figure 2, the arrangement is in principle similar to that described in connection with Figure 2. The mixing space 3" is provided with a mixer 3' formed, e.g., by a cylinder having the connections 11 and 12 for the cold and warm air ducts in the ends thereof. The mixer is provided with an outflow opening A' through which air flows out. The regulating device comprises two piston-shaped elements 6', 8" which are mounted coaxially in bearings on a shaft 7' . The u- tual spacing of the elements is adjustable.
Cabins on a ship are usually arranged in a series relative to the main air ducts. Since the cabin size and the desired temperature may vary so that the air flow and the mixing ratio of cold and warm air have to be regulated separately for each cabin, it is essential that the baffle can be adjusted externally and as simply as possible. In addition, the pressure difference and pressure drop in the duct should be taken into account. Figure 3 illustrates generally the adjustment of the air conditioning apparatus of Figure 1. It is obvious that the adjusting procedure may differ from that shown in the figure. The adjustment takes place at four stages I - IV. The blades 6 and 8 of the baffle 6, 7, 8 are released from the shaft 7 and positioned at an angle ccl with respect to each other so that each blade is positioned against the end of the respective side wall 4 and 5, whereby the outflow opening A is completely closed. The blades are locked mechanically with re¬ spect to each other in this position (position I). Thereafter th& regulating device is pivoted towards the cold air duct 1. When the maximum warm air flow Qvmax is measured, the blade 8 is released from the shaft 7 and locked relative to the side walls (po- sition II). The baffle or, more precisely, the blade 6 thereof only, is then pivoted towards the warm air duct 2. On reaching the required nominal flow Qnom consisting of the minimum cold air flow QK in and t^e maximum warm air flow Qvmax (Qnom = QKmin + Qvmax)/ the blade 6 is locked at an angle Ot 2 relative to the blade 8 on the shaft 7, and the pivoting of the regu¬ lating device towards the cold air duct 1 is limited to this position (position III). If the maximum cool- ing effect is to be obtained, the baffle is pivoted towards the warm air duct 2, whereby the supply of warm air is completely stopped when the blade 8 is sealed against the side wall 5 and the maximum cold air flow Q max is obtained (position IV) . The pivoting of the regulating device towards the warm air duct 2 is limited to this point.
Figure 4 illustrates generally the adjustment • of the air conditioning device of Figure 2. The prin¬ ciple is similar to that described above. The dif- ference lies mainly in that the piston-shaped elements are displaced in the axial direction relative to each other and to the mixer for obtaining the desired re¬ sult.
In position I the piston-shaped elements 6' , 8' are released from the shaft 7' and positioned at a mutual, spacing of a^ from each other so that the flow of cold and warm air is totally blocked. The pistons are locked mechanically relative to each other in this position, whereafter the regulating device is dis- placed towards the cold air duct 1 and warm air begins to flow out through the opening A' . On measuring Qvmax> tne piston 8' is released from the shaft 7' and locked relative to the side walls (opening A'). The adjustment of QKmin --s carried out correspondingly, whereby Qnom (the mutual spacing a^ of the elements) is obtained. Q^max ^s obtained in position IV, which corresponds to position IV in Figure 3.
As mentioned above, the adjustment and regu¬ lation of the baffle and the piston elements can be automated by shifting motors and electronic control systems.
The drawings and the description related there¬ to are only intended to illustrate the idea of the in¬ vention. In its details, the apparatus according to the invention may vary within the scope of the claims. The field of application is not, of course, restricted to ship cabins.

Claims

Claims :
1. An air conditioning apparatus,' especially for regulating the flow of cold or warm air or a mix- ture thereof, comprising inflow openings (11, 12) for cold and warm air and at least one outflow opening (9), a mixing space (3") positioned therebetween, and a device provided in the mixing space for regulating the flow of cold or warm air or a mixture thereof and the amount of air to be introduced into a space (13) to be conditioned, c h a r a c t e r i z e d in that
- the mixing space (3") comprises a regulating device (6, 7, 8; 6', 7', 8') disposed in a mixer (3;
3'); - the regulating device (6, 7, 8; 6', 7', 8') comprises two elements adjustable in relation to each other (6, 8; 6', 81); and
- the elements (6, 8; 6', 8') are adjustable by means of a common shaft (7; 7' ) .
2. An apparatus according to claim 1, c h a r¬ a c t e r i z e d in that
- the mixer (3) comprises two side walls (4, 5) in the form of a broken circle;
- the regulating device (6, 7, 8) positioned in the mixer (3) comprises a shaft (7) and two elements
(6, 8) adjustable from the ends thereof in relation to the shaft (7) and each other;
- the shafts of the elements (6, 8) are ar¬ ranged coaxially with the center of curvature of the side walls (4, 5), and
- the free end portions of the elements (6, 8) are arranged to be positioned tightly against the side walls (4, 5) when directed towards them.
3. An apparatus according to claim 2, c h a r- a c t e r i z e d in that the elements (6, 8) of the regulating device are substantially planar baffles.
4. An apparatus according to claim 3, c h a r¬ a c t e r i z e d in that the width of the elements (6, 8) corresponds substantially to the width of the side walls (4, 5) .
5. An apparatus according to claim 1, c h a r¬ a c t e r i z e d in that
- the mixer (31) comprises parallel side walls;
- the regulating device (61, 7', 8') positioned in the mixer (31) comprises a shaft (71) and two el¬ ements (6', 8') arranged transversely to the side walls and coaxially in the direction of motion there¬ of, the mutual spacing of said elements being adjust¬ able.
6. An apparatus according to claim 5, c h a r¬ a c t e r i z e d in that the elements (6' , 8' ) are substantially piston-shaped, whereby their shafts are so called piston rods.
7. An apparatus according to claim 6, c h a r- a c t e r i z e d in that the cross-sectional area of the elements (6* , 8' ) is substantially equal to that of the mixer (3' ) .
8. An apparatus according to claim 4 or 7, c h a r a c t e r i z e d in that the elements (6, 8; " 6', 8') are mounted on the shaft (7; 7') by means of a sleeve structure.
9» An apparatus according to claim 8, c h a r¬ a c t e r i z e d in that the elements (6, 8; 6', 8' ) are lockable on the shaft (7; 7' ) . 10. An apparatus according to claim 9, c h a r¬ a c t e r i z e d in that at least one end portion of the shaft (7; 7* ) extends outside the mixer (3; 3' ) .
EP88908232A 1987-09-23 1988-09-22 An air conditioning apparatus, especially for regulating the flow of cold and warm air or a mixture thereof Ceased EP0375734A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI874154 1987-09-23
FI874154A FI82307C (en) 1987-09-23 1987-09-23 ventilation device

Publications (1)

Publication Number Publication Date
EP0375734A1 true EP0375734A1 (en) 1990-07-04

Family

ID=8525114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88908232A Ceased EP0375734A1 (en) 1987-09-23 1988-09-22 An air conditioning apparatus, especially for regulating the flow of cold and warm air or a mixture thereof

Country Status (7)

Country Link
EP (1) EP0375734A1 (en)
JP (1) JPH03500330A (en)
KR (1) KR890701961A (en)
DK (1) DK74790A (en)
FI (1) FI82307C (en)
SE (1) SE9000976D0 (en)
WO (1) WO1989003006A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3928944C3 (en) * 1989-08-31 1995-02-09 Daimler Benz Ag Air conditioning for vehicles
GB9015378D0 (en) * 1990-07-12 1990-08-29 Senior Coleman Limited Ventilation apparatus
SE507704C2 (en) * 1995-12-08 1998-07-06 Air Innovation Sweden Ab Mixing box for temperature control of air flow fed from two pipe ducts and two duct system equipped with two or more such mixing boxes
FR2757454B1 (en) * 1996-12-19 1999-03-05 Valeo Climatisation DEVICE FOR HEATING AND AIR CONDITIONING THE INTERIOR OF A MOTOR VEHICLE
US6007421A (en) * 1997-09-26 1999-12-28 Valeo Climatisation Temperature control device
US6241601B1 (en) 1999-07-13 2001-06-05 M & I Heat Transfer Products Ltd. High efficiency air mixer using jet streams
DE10031991B4 (en) * 2000-06-30 2004-02-05 Valeo Klimasysteme Gmbh damper
US6547433B2 (en) 2001-01-05 2003-04-15 M & I Heat Transfer Products, Ltd. Air mixing device having series of parallel airflow passages
EP2694880B1 (en) 2011-04-08 2017-12-27 Carrier Corporation Climatic beam air conditioning system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE737266A (en) * 1968-08-23 1970-02-09
DE2033194C3 (en) * 1970-07-04 1981-07-30 Ltg Lufttechnische Gmbh, 7000 Stuttgart Method for introducing cold and warm air into a room in a building
US3877513A (en) * 1973-08-02 1975-04-15 Carrier Corp Control of air conditioning apparatus
FI54195C (en) * 1975-02-21 1978-10-10 Nokia Oy Ab ADJUSTMENT OF THE PROCESSING OF THE APPLIANCE AND THE APPLICATION OF THE APPLIANCE FOR THE APPLICATION
SE7602284L (en) * 1976-02-25 1977-08-26 Svenska Flaektfabriken Ab SEQUENCE CONTROL FOR SEQUENCE CONTROL OF TWO DAMPS IN FOR EXAMPLE AN INDUCTION APPLIANCE FOR VENTILATION AIR
DE3148357A1 (en) * 1981-12-07 1983-06-09 Wilhelm Gebhardt Gmbh, 7112 Waldenburg For example, a blower assembly to be used with air conditioners and an air conditioner equipped with such a blower assembly
SE443224B (en) * 1982-12-21 1986-02-17 Claes Ostrom PROCEDURE AND DEVICE FOR ALTERNATING INFLATION OF HOT RESP cold cold air in room air conditioning
FI69509C (en) * 1983-07-01 1986-02-10 Itumic Oy FOERFARANDE OCH ANORDNING FOER REGLERING AV VENTILATION
NO154708C (en) * 1984-06-28 1986-12-03 Paul Tengesdal VENTILATOR WITH HEAT RECOVERY.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8903006A1 *

Also Published As

Publication number Publication date
WO1989003006A1 (en) 1989-04-06
FI82307B (en) 1990-10-31
SE9000976L (en) 1990-03-19
FI874154A (en) 1989-04-20
SE9000976D0 (en) 1990-03-19
JPH03500330A (en) 1991-01-24
FI82307C (en) 1991-02-11
DK74790D0 (en) 1990-03-22
FI874154A0 (en) 1987-09-23
DK74790A (en) 1990-03-22
KR890701961A (en) 1989-12-22

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