DK151983B - Refrigerator and freezer - Google Patents
Refrigerator and freezer Download PDFInfo
- Publication number
- DK151983B DK151983B DK653774AA DK653774A DK151983B DK 151983 B DK151983 B DK 151983B DK 653774A A DK653774A A DK 653774AA DK 653774 A DK653774 A DK 653774A DK 151983 B DK151983 B DK 151983B
- Authority
- DK
- Denmark
- Prior art keywords
- box
- heating element
- freezing
- evaporator
- fresh
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0252—Compressor control by controlling speed with two speeds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/30—Quick freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/34—Temperature balancing devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
DK 151983 BDK 151983 B
Opfindelsen omhandler et køle- og fryseapparat af den i krav lfs indledning angivne art.The invention relates to a refrigeration and freezing apparatus of the kind specified in the preamble of claim 1.
De kendte apparater af denne art omfatter normalt to elektriske modstandselementer, som fungerer indbyrdes uafhængigt i boksen for friske næringsmidler for at opretholde denne boks under foreskrevne driftsbetingelser, eksempelvis for at undgå en sænkning af temperaturen i denne boks til en værdi under 0°C under indfrysning i fryseboksen for lav temperatur. Det første af de to elektriske varmeelementer er sædvanligvis monteret op imod fordamperen i boksen med de friske næringsmidler og sættes automatisk i gang ved hvert stop af kølemaskinens kompressor. Det andet elektriske varmeelement sættes alene under spænding, når der indfryses i boksen med lav temperatur, ogThe known apparatus of this kind usually comprises two electrical resistive elements which function independently of the box for fresh foodstuffs to maintain this box under prescribed operating conditions, for example to avoid lowering the temperature in this box to a value below 0 ° C during freezing. in the low temperature freezer. The first of the two electric heating elements is usually mounted up against the evaporator in the fresh food box and is automatically started at each stop of the refrigerator compressor. The other electric heating element is energized only when it is frozen in the low temperature box, and
2 DK 1519 83 B2 DK 1519 83 B
det arbejder kontinuerligt uafhængigt af driften af kompressoren og er monteret i et andet parti af boksen med de friske næringsmidler end fordamperen i denne boks.it operates continuously independently of the operation of the compressor and is mounted in a different portion of the box containing the fresh foods than the evaporator in this box.
De kendte apparater af denne art frembyder følgende ulemper: Når den indvendige bakke i boksen for friske næringsmidler består af metal og fryseapparatet er isoleret med et på stedet dannet skumform-stof, er det andet varmeelement ofte fastgjort imod den godt varme-ledende bakke indlejret i dette skumstof. En udskiftning af det andet varmeelement i tilfælde af dettes brud bliver herved praktisk taget umuligt. Af denne grund er det andet varmeelement ofte på kostbar vis dubleret med et yderligere varmeelement.The known appliances of this kind present the following drawbacks: When the inner tray of the fresh food box is made of metal and the freezer is insulated with an on-site foam mold, the other heating element is often fixed against the well heat-conductive tray embedded in the this foam. Replacement of the second heating element in the event of its breakage becomes practically impossible. For this reason, the second heating element is often costly duplicated with an additional heating element.
I en anden kendt udformning er det andet varmeelement skjult under et isolerende bånd, der tilvejebringer en mekanisk forbindelse imellem den indvendige bakke og apparatets ydre hus. I denne udførelsesform kræver det andet varmeelement normalt en anordning, der tilvejebringer en virksom termisk diffusion inde i boksen for friske næringsmidler.In another known embodiment, the second heating element is hidden under an insulating band providing a mechanical connection between the inner tray and the outer housing of the apparatus. In this embodiment, the second heating element usually requires a device which provides an effective thermal diffusion inside the fresh food box.
Når den indvendige bakke i boksen for friske næringsmidler består af et formstof, som er dårligt varmeledende, er det andet varmeelement monteret enten synligt i boksen for friske næringsmidler med den heraf følgende ulempe eller skjult under et forbindelsesbånd imellem den indvendige bakke og apparatets ydre hus af den ovennævnte art.When the inner tray of the fresh food box consists of a material which is poorly heat conducting, the second heating element is mounted either visible in the box of fresh food with the consequent disadvantage or hidden under a connecting band between the inner tray and the outer housing of the appliance. the aforementioned species.
Opfindelsen har til formål at tilvejebringe et apparat af den angivne art uden disse ulemper, hvilket opnås for et køle- og fryseapparat af den indledningsvis angivne art, der er opbygget som angivet i krav l's kendetegnende del.The invention has for its object to provide an apparatus of the aforementioned kind without these disadvantages, which is achieved for a refrigeration and freezing apparatus of the aforementioned kind, which is constructed as defined in the characterizing part of claim 1.
Opfindelsen beskrives nærmere nedenfor i forbindelse med tegningen, hvor: fig. 1 viser et strømskema for et køle- og fryseapparat af kendt type, og fig. 2 et strømskema for apparatet ifølge opfindelsen.The invention is further described below in connection with the drawing, in which: FIG. 1 is a flow chart of a refrigerator and freezer of known type; and FIG. 2 is a flow diagram of the apparatus according to the invention.
Et kombineret køle- og fryseapparat omfatter normalt en boks for friskeA combined refrigerator and freezer usually includes a box for fresh
3 DK 151983 B3 DK 151983 B
næringsmidler og en boks for nedfrosne næringsmidler. I et sådant apparat kan man dels holde næringsmidler friske i boksen for friske næringsmidler og dels indfryse næringsmidler eller bevare nedfrosne næringsmidler i boksen for nedfrosne næringsmidler. Dette apparat omfatter ofte i kølekredsen to fordampere, af hvilke den ene er monteret i boksen for nedfrosne næringsmidler og den anden er fastgjort i boksen for friske næringsmidler. Kølekredsløbet fødes som oftest med et kølemiddel igennem en kompressor, hvis motor er vist skematisk på fig. 1 og 2 ved en cirkel 1.foods and a box for frozen foods. In such an appliance, one can keep foods fresh in the box for fresh foods and partly freeze foods or keep frozen foods in the box for frozen foods. This apparatus often includes in the refrigeration circuit two evaporators, one of which is mounted in the frozen food box and the other is secured in the fresh food box. The cooling circuit is usually fed with a refrigerant through a compressor, the motor of which is shown schematically in FIG. 1 and 2 by a circle 1.
Når elektromotoren 1 roterer, komprimerer kompressoren det gasformige kølemiddel og driver det igennem en kondensator ind i de to fordampere i apparatet. Fordelingen af det flydende kølemiddel i de to fordampere, som er bestemt ved opbygningen af apparatets kølekredsløb, forbliver i det væsentlige konstant under driften af kølekredsløbet. Fordampningen af det flydende kølemiddel i de to fordampere yder kulde i hver sin køleboks.As the electric motor 1 rotates, the compressor compresses the gaseous refrigerant and drives it through a capacitor into the two evaporators in the apparatus. The distribution of the liquid refrigerant in the two evaporators, determined by the structure of the cooling circuit of the apparatus, remains substantially constant during operation of the cooling circuit. The evaporation of the liquid refrigerant in the two evaporators produces cold in each of its coolers.
Temperaturen i boksen for friske næringsmidler opretholdes normalt på en værdi imellem 0 og 5°C for en udvendig temperatur på under 32°C. En termostat 2 (fig. 1 og 2), hvis kolbe er i berøring med fordamperen i boksen for friske næringsmidler, er monteret i serie med elektromotoren 1 for kompressoren imellem klemmerne 3 og 4 på en elektrisk strømkilde for at kunne bryde strømmen til motoren 1, så snart temperaturen i det indre af boksen for friske næringsmidler kommer under 0&C, og til at starte motoren 1, når temperaturen i boksen for friske næringsmidler kommer over +5°C.The temperature in the box for fresh foods is usually maintained at a value between 0 and 5 ° C for an outside temperature below 32 ° C. A thermostat 2 (Figs. 1 and 2), whose flask is in contact with the evaporator in the fresh food box, is mounted in series with the electric motor 1 of the compressor between terminals 3 and 4 on an electric power source to interrupt the current to the motor 1 as soon as the temperature in the interior of the fresh food box falls below 0 & C and to start the engine 1 when the temperature of the fresh food box exceeds + 5 ° C.
Apparatets boks til lav temperatur skal normalt kunne sænke temperaturen af et antal indlagte produkter svarende til 7 kg produkt pr.The low temperature box of the appliance should normally be able to lower the temperature of a number of inlaid products corresponding to 7 kg of product per day.
100 liter rumfang af boksen til en værdi på under eller lig med -18°C under et tidsrum på 24 timer og opretholde denne mængde af nedfrosne produkter på en værdi på under eller lig med -18°C. Dette resultat kan opnås enten ved at dimensionere fordamperen i denne boks tilstrækkeligt hertil eller ved at forlænge køreperioden af kompressoren i apparatets kølekredsløb, hvis fordamperen har en begrænset dimension. I praksis begrænses størrelsen af fordamperen af dimensionen af den boks, i hvilken den er monteret. Ved at forlænge køreperioden af kompressoren i kølekredsløbet forøges kuldeproduktionen såvel i boksen med lav temperatur som i boksen for friske næringsmidler. Herved består der risiko for at fremkalde tilfrvsnine: i boksen for friske næ-100 liters of the volume of the box to a value below or equal to -18 ° C for a period of 24 hours and maintain this amount of frozen products at a value below or equal to -18 ° C. This result can be achieved either by dimensioning the evaporator in this box adequately for this or by extending the running period of the compressor in the cooling circuit of the apparatus if the evaporator has a limited dimension. In practice, the size of the evaporator is limited by the dimension of the box in which it is mounted. By extending the running period of the compressor in the refrigeration circuit, cold production is increased both in the low temperature box and in the box for fresh foods. Thereby, there is a risk of induction: in the box for fresh
4 DK 151983B4 DK 151983B
I en kendt udførelsesform som vist på fig. 1 er to varmeelementer 5 og 6 monteret i boksen for friske næringsmidler i apparatet. Varmeelementet 5, der er fastgjort på fordamperen i boksen for friske næringsmidler, er monteret parallelt med klemmerne af termostaten 2, så at det fungerer ved standsning af kompressoren, dvs. ved brydning af termostaten 2. Varmeelementet 6, som er fastgjort i et andet parti af boksen for friske næringsmidler end fordamperen, er monteret imellem klemmerne 3 og 4 for strømkilden i serie med en afbryder 7, kaldet indfrysningsafbryderen. Når boksen med lav temperatur i apparatet fungerer som opretholder af de nedfrosne produkter, er driften af varmeelementet 5 alene tilstrækkelig til at opretholde temperaturen i boksen for friske næringsmidler på en værdi imellem 0 og 5°C, og indfrysningsafbryderen 7 er da afbrudt.In a known embodiment as shown in FIG. 1, two heating elements 5 and 6 are mounted in the box for fresh foods in the apparatus. The heating element 5, which is attached to the evaporator in the fresh food box, is mounted parallel to the terminals of the thermostat 2 so that it works by stopping the compressor, ie. by breaking the thermostat 2. The heating element 6, which is fixed in a different portion of the box for fresh food than the evaporator, is mounted between the terminals 3 and 4 of the power source in series with a switch 7, called the freezing switch. When the low temperature box in the appliance acts as the holder of the frozen products, the operation of the heating element 5 alone is sufficient to maintain the temperature of the box for fresh foods at a value between 0 and 5 ° C, and the freezing switch 7 is then switched off.
Når boksen med lav temperatur skal indfryse produkter, sluttes afbryderen 7 for at sætte varmeelementet 6 under spænding. Under indfrysningen fungerer varmeelementet 6 uafhængigt af termostaten 2 og varmeelementet 5 til at opretholde temperaturen i boksen for friske næringsmidler på en værdi imellem 0 og 5°C.When the low temperature box is to freeze products, the switch 7 is closed to energize the heating element 6. During freezing, the heating element 6 operates independently of the thermostat 2 and the heating element 5 to maintain the temperature in the box for fresh foods at a value between 0 and 5 ° C.
Der er ofte monteret en lampe 8 imellem klemmerne af varmeelementet 6 for at angive slutning og brydning af strømmen til dette varmeelement. Ulemperne som følge af montagen af varmeelementet 6 i de kendte apparater er nævnt ovenfor.A lamp 8 is often mounted between the terminals of the heating element 6 to indicate the closing and breaking of the current to this heating element. The disadvantages arising from the mounting of the heating element 6 in the known apparatus are mentioned above.
Ifølge opfindelsen anvendes der et elektrisk varmeelement 9, fortrinsvis et enkelt, samt en særlig reguleringsanordning til strømforsyning af dette element. Reguleringsanordningen muliggør for varmeelementet at fungere med en brøkdel af sin effekt under driften af boksen med lav temperatur til opretholdelse af de nedfrosne produkter og med fuld effekt under driften af denne boks til indfrysning af produkterne.According to the invention, an electric heating element 9, preferably a single one, and a special control device for supplying this element are used. The control device allows the heating element to operate with a fraction of its power during operation of the low temperature box for maintaining the frozen products and with full power during operation of this box for freezing the products.
I den på fig. 2 viste udførelsesform er det elektriske varmeelement 9 og en diode 10 i serie forbundet til klemmerne af termostaten 2, og kompressorens motor 1 og termostaten 2 er i serie forbundet til klemmerne 3 og 4 af en vekselstrømskilde. Indfrysningsafbryderen 7 er forbundet til klemmerne af dioden 10. Varmeelementet 9 er fastgjort imod fordamperen i boksen for friske næringsmidler, og dioden 10 er monteret inden i indfrysningsafbryderen 7·In the embodiment of FIG. 2, the electric heating element 9 and a diode 10 are connected in series to the terminals of the thermostat 2, and the motor 1 of the compressor and the thermostat 2 are connected in series to the terminals 3 and 4 of an alternating current source. The freezing switch 7 is connected to the terminals of the diode 10. The heating element 9 is fixed against the evaporator in the box for fresh food, and the diode 10 is mounted inside the freezing switch 7 ·
5 DK 151983 B5 DK 151983 B
Når boksen med lav temperatur fungerer som opretholder af de nedfrosne produkter, står afbryderen 7 på fig. 2 åben» I dette tilfælde vil, så snart termostaten 2 bryder for at standse kompressormotoren 1, varmeelementet 9 og dioden 10 sættes under spænding. Dioden 10 lader for hver helbølge af vekselstrømmen kun den halve bølge passere igennem elementet 9. Varmeelementet 9 arbejder således med halvdelen af sin mærkeeffekt. Denne drift af varmeelementet 9 er tilstrækkelig til at opretholde temperaturen i boksen for friske næringsmidler på en værdi imellem 0 og +5°C.When the low temperature box acts as the holder of the frozen products, the switch 7 of FIG. 2 open »In this case, as soon as the thermostat 2 breaks down to stop the compressor motor 1, the heating element 9 and the diode 10 are energized. The diode 10 allows only half the wave to pass through the element 9. For each full wave of the alternating current, the heating element 9 thus works with half its rated power. This operation of the heating element 9 is sufficient to maintain the temperature of the fresh food box at a value between 0 and + 5 ° C.
Når boksen med lav temperatur skal indfryse, sluttes afbryderen 7 på fig. 2 og kortslutter dioden 10. I dette tilfælde vil, når termostaten 2 er afbrudt, d.v.s. under standsning af apparatets kompressor, varmeelementet 9 sættes under spænding og arbejde med sin normale effekt.When the low temperature box is to be frozen, the switch 7 of FIG. 2 and short-circuit the diode 10. In this case, when the thermostat 2 is switched off, i.e. while stopping the compressor of the apparatus, the heating element 9 is energized and operating at its normal power.
Varmeelementet 9 i apparatet ifølge opfindelsen arbejder kun ved standsning af kompressoren uanset driftsformen for boksen med lav temperatur, enten til indfrysning af produkter eller til konservering af de nedfrosne produkter.The heating element 9 in the apparatus according to the invention only works when the compressor is stopped, regardless of the low temperature operating mode, either for freezing products or for preserving the frozen products.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7345235A FR2254762B1 (en) | 1973-12-18 | 1973-12-18 | |
| FR7345235 | 1973-12-18 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK653774A DK653774A (en) | 1975-08-18 |
| DK151983B true DK151983B (en) | 1988-01-18 |
| DK151983C DK151983C (en) | 1988-06-27 |
Family
ID=9129379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK653774A DK151983C (en) | 1973-12-18 | 1974-12-16 | Refrigerator and freezer |
Country Status (12)
| Country | Link |
|---|---|
| BE (1) | BE823532A (en) |
| CA (1) | CA1008263A (en) |
| DE (1) | DE2459652C2 (en) |
| DK (1) | DK151983C (en) |
| ES (1) | ES433003A1 (en) |
| FR (1) | FR2254762B1 (en) |
| GB (1) | GB1494217A (en) |
| IT (1) | IT1027733B (en) |
| NL (1) | NL7416348A (en) |
| NO (1) | NO137616C (en) |
| SE (1) | SE407619B (en) |
| TR (1) | TR18175A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2563326B1 (en) * | 1984-04-19 | 1987-02-27 | Nord Ste Electromecanique | TWO-COMPARTMENT REFRIGERATOR CABINET |
| FR2630198A1 (en) * | 1988-04-19 | 1989-10-20 | Selnor | Refrigeration device |
| FR2632390B1 (en) * | 1988-06-03 | 1990-08-03 | Selnor | FRIDGE FREEZER |
| IT1234690B (en) * | 1989-03-21 | 1992-05-26 | Zanussi A Spa Industrie | REFRIGERANT APPLIANCE WITH SINGLE THERMOSTATIC TEMPERATURE CONTROL. |
| DE60029793T2 (en) | 1999-06-04 | 2007-10-18 | Arcelik S.A. | ENERGY CONSUMPTION REDUCTION WITH A DIODE IN REFRIGERATORS WITH A LAMP AS A HEATING DEVICE |
| UA76962C2 (en) | 2000-10-11 | 2006-10-16 | Arcelik As | Method for refrigerating device control (variants) |
| RU2360190C2 (en) * | 2004-03-25 | 2009-06-27 | Арчелык Аноним Ширкети | Cooling facility and method of control over it |
| WO2011154388A2 (en) | 2010-06-08 | 2011-12-15 | Arcelik Anonim Sirketi | A cooling device with two compartments |
| EP2397798B1 (en) | 2010-06-18 | 2016-01-27 | Vestel Beyaz Esya Sanayi Ve Ticaret A.S. | Heater control unit for cooler devices |
-
1973
- 1973-12-18 FR FR7345235A patent/FR2254762B1/fr not_active Expired
-
1974
- 1974-12-16 GB GB54305/74A patent/GB1494217A/en not_active Expired
- 1974-12-16 NL NL7416348A patent/NL7416348A/en not_active Application Discontinuation
- 1974-12-16 SE SE7415785A patent/SE407619B/en not_active IP Right Cessation
- 1974-12-16 DK DK653774A patent/DK151983C/en active
- 1974-12-17 IT IT30629/74A patent/IT1027733B/en active
- 1974-12-17 TR TR18175A patent/TR18175A/en unknown
- 1974-12-17 NO NO744545A patent/NO137616C/en unknown
- 1974-12-17 ES ES433003A patent/ES433003A1/en not_active Expired
- 1974-12-17 DE DE2459652A patent/DE2459652C2/en not_active Expired
- 1974-12-17 CA CA216,173A patent/CA1008263A/en not_active Expired
- 1974-12-18 BE BE151660A patent/BE823532A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NO137616C (en) | 1978-03-29 |
| DK653774A (en) | 1975-08-18 |
| SE7415785L (en) | 1975-06-19 |
| NO744545L (en) | 1975-07-14 |
| DE2459652C2 (en) | 1984-07-12 |
| FR2254762A1 (en) | 1975-07-11 |
| NO137616B (en) | 1977-12-12 |
| BE823532A (en) | 1975-04-16 |
| TR18175A (en) | 1978-02-26 |
| CA1008263A (en) | 1977-04-12 |
| IT1027733B (en) | 1978-12-20 |
| ES433003A1 (en) | 1976-09-01 |
| DE2459652A1 (en) | 1975-06-19 |
| NL7416348A (en) | 1975-06-20 |
| FR2254762B1 (en) | 1976-10-08 |
| GB1494217A (en) | 1977-12-07 |
| SE407619B (en) | 1979-04-02 |
| DK151983C (en) | 1988-06-27 |
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