EP0000401B1 - Vorrichtung zum Übertragen von Heizwärme von einer Wärmequelle auf Verbraucherkreise - Google Patents

Vorrichtung zum Übertragen von Heizwärme von einer Wärmequelle auf Verbraucherkreise Download PDF

Info

Publication number
EP0000401B1
EP0000401B1 EP78100405A EP78100405A EP0000401B1 EP 0000401 B1 EP0000401 B1 EP 0000401B1 EP 78100405 A EP78100405 A EP 78100405A EP 78100405 A EP78100405 A EP 78100405A EP 0000401 B1 EP0000401 B1 EP 0000401B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
heat
valve
transfer
primary circuit
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.)
Expired
Application number
EP78100405A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0000401A1 (de
Inventor
Istvan Majoros
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0000401A1 publication Critical patent/EP0000401A1/de
Application granted granted Critical
Publication of EP0000401B1 publication Critical patent/EP0000401B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/04—Hot-water central heating systems with the water under high pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D10/00—District heating systems
    • F24D10/003—Domestic delivery stations having a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D9/00—Central heating systems employing combinations of heat transfer fluids covered by two or more of groups F24D1/00 - F24D7/00
    • F24D9/02—Hot water and steam systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/17—District heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]

Definitions

  • the invention relates to a device for transferring heat from a primary circuit having a heat source to secondary circuits, each provided with a regulator valve and flowing through consumers, via heat exchangers connected in series in the primary circuit.
  • a device of this type is known for example from FR-A 2 276 539.
  • the primary circuit consists of a one-pipe system, through which secondary consumers are applied to heat consumers via heat exchangers.
  • the heat exchangers are connected in series without additional throttling and control. For example, if the temperature in the primary circuit is 220 ° C, this temperature is also present in the secondary circuits when the heat consumption is low. However, such a high temperature corresponds to a pressure of approximately 23 to 24 ata, which is, however, not desirable in secondary circuits. The primary circuit and the secondary circuits are therefore not thermally separated.
  • the invention is intended to solve the problem of further developing the known device for transferring heating heat from a primary circuit having a heat source to consumers flowing through secondary circuits with the further features of the type described at the outset in such a way that not only hydraulic but also economic control of the working medium thermal separation of the primary and secondary circuits is also made possible.
  • This object is achieved in that between the primary circuit and each secondary circuit a heat transfer by means of steam transfer circuit is provided, which is connected on the primary side to the heat exchanger of the primary circuit and on the secondary side to a further heat exchanger and partially with a constant transmission medium controlled by a heat meter and temperature controller filled and monitored by a safety valve.
  • the temperature in these circuits can be regulated, for example, from 20 ° to approximately the primary circuit temperature (e.g. 500 ° C). Even if the transmission medium is a coolant, regulation can take place in the minimum temperature range.
  • the transfer circuit is evacuated and has a constant amount of water or transmission medium.
  • the constant amount of water or the transmission medium in the transfer circuit is dimensioned such that this volume can transfer the maximum heat output required in the secondary circuit from the heat exchanger of the primary circuit to the respective heat exchanger of the secondary circuit, the transfer taking place in vapor form.
  • This makes it possible to transfer the required heat without differential pressure with a small amount of water and a low water speed.
  • the heat meter, temperature controller and the safety valve can be selected according to the pressure and temperature conditions occurring in the transfer circuit, their load being correspondingly minimal.
  • the transfer circuit does not require any additional energy and the susceptibility to failure is only slight. There are also no noises caused by drives and valves, so that the heat transfer provided according to the invention is extremely economical.
  • the design is carried out so that the heat supply line of the district heating network is provided as the heat source, through which the series-connected heat exchangers of the primary circuits are acted upon in an unregulated manner with high-voltage district heating.
  • the amount of heat supplied to the heat exchangers of the primary circuits in succession is not regulated and may fluctuate as desired.
  • the flow resistance is constant and is practically identical to the flow resistance in the heat supply line of the district heating network, which is returned to the district heating plant by the last heat exchanger of the primary circuit.
  • Each primary-side heat exchanger is designed such that it can be switched off and is bridged by a lockable bypass line. Each primary circuit-side heat exchanger can therefore be easily replaced without interrupting the heat supply to the other primary circuit-side heat exchangers connected in series.
  • each secondary circuit-side heat exchanger of the transfer circuit is designed as a condenser, in the tubing of which the heat meter, the safety valve and the temperature controller are installed for the condensate drain in the flow direction.
  • the heat is therefore taken up from the primary circuit by the evaporator on the primary circuit side and is transferred as steam via the transfer circuit to the heat exchanger of the secondary circuit.
  • the evaporator of the heat exchanger on the primary circuit side removes the heat from the heat as required or depending on the temperature of the condensate in the transfer circuit lead of the district heating network and causes a drop in temperature.
  • a pipe coil is provided, both of which are arranged in series in the transfer circuit, the pipe coil in the heat exchanger on the primary circuit side being acted on by the district heating.
  • the temperature controller in the transfer circuit allows more or less condensate to flow into the primary circuit-side heat exchanger, in which it evaporates and enters the pipe coil of the heat exchanger designed as a condenser, whereupon the circuit starts again.
  • each primary circuit side and the secondary circuit side heat exchanger including the heat meter, safety valve and temperature controller of each transfer circuit are combined to form an aggregate in which the secondary circuit side heat exchanger or condenser is arranged above the primary circuit side heat exchanger.
  • a district heating plant 1 as a heat source is a pipeline 2, which is insulated in the usual way and laid below the surface of the earth, for the transport of high-tension district heating, e.g. in the form of superheated water, preferably through streets in which there are house or apartment units to be supplied with district heating, the house or apartment units concerned being connected in series to the pipe string 2.
  • the heat supply line 2 is returned to the district heating plant 1, so that the entire closed pipe line 2 also forms a primary circuit.
  • the heat supply line 2 is used in a simple and advantageous manner e.g. installed directly through the basement of the rows of houses, which can significantly reduce investment costs.
  • each house or living unit is assigned a heat exchanger 3 which is charged with the district heating and which lies with its high-pressure part in the primary circuit of the pipe string 2 supplying the district heating.
  • the low-pressure part of the heat exchanger 3 is formed, for example, by a coil, the ends of which are connected to the ends of a second coil, which forms part of a further heat exchanger 4 designed as a condenser, which is provided at a predetermined distance above the heat exchanger 3 arranged in the primary circuit 2 .
  • the coils of the two heat exchangers 3 and 4 and the pipelines connecting them form the transfer circuit 5 for the heat to the consumers, whereas the other part of the heat exchanger 4 which is designed as a condenser and contains the heating medium for the consumers in one of the consumers, e.g. Radiator, boiler and the like.
  • the heating medium secondary circuit 6.
  • a circulation pump 8 and a control valve 9 are arranged in the usual way in the secondary circuit 6.
  • a heat exchanger 3 with the accessories already explained is provided for each house or living unit, wherein, as already mentioned, the heat exchangers 3, all house or apartment units to be supplied with heat are connected in series and in such a way that they are all subjected to unregulated high-voltage district heating.
  • each transfer circuit namely in the pipe string 10, through which the condensate from the heat exchanger 4 designed as a condenser is returned to the coil of the heat exchanger 3 located in the primary circuit and acting as an evaporator, seen in the flow direction of the condensate, a heat meter 11, a safety valve 12 and a temperature controller 13.
  • the transfer circuit 5 is operated with a constant amount of water, which is determined so that the amount of water the maximum heat required in the secondary consumer circuit, e.g. at a flow temperature of 90 ° and a return temperature of 50 ° C. This amount of water is located when the control valve 9 of the secondary circuit is closed in the vertical pipe run 10 of the transfer circuit 5 provided for the condensate between the outlet end of the coil of the heat exchanger 4 and the temperature controller 13.
  • the temperature controller 13 opens the valve closing the condensate line and allows as much condensate to flow into the coil of the heat exchanger 3 located in the primary circuit as the evaporator until the condensate formed in the condenser or heat exchanger 4 has again reached the prescribed temperature in the temperature controller 13.
  • the pipe string 10 returning the condensate to the heat exchanger 3 or evaporator is shut off again by the valve thermally influenced by the temperature controller.
  • the transfer of the heat required in a secondary circuit takes place in the transfer circuit by steam, the pressure of which depends on the condensation temperature and is used for temperature control. Through the heat meter, the number of passes of the constant amount of heat transporting and delivering a certain amount of heat to the secondary circuit is summed up and the transferred calories are displayed in a display device.
  • each heat exchanger through which the district heating flows is designed to be switched off and bypassed by a lockable bypass line 14.
  • the device for transferring heat from the district heating network to consumer groups is particularly usable in an economical and handy manner in that the primary circuit-side and the secondary circuit-side heat exchanger 3 and 4 including the heat meter 11, safety valve 12 and temperature controller 13 are combined to form a unit which can be set up at any point in which, for the reasons set out, the secondary circuit-side heat exchanger 4 or condenser is arranged at a predetermined distance above the primary circuit-side heat exchanger 3.
  • the volume of condensate flowing from the condenser 4 to the evaporator 3 is measured and compensated with the condensation temperature.
  • the heat meter 11 is formed by a container 15 and should, for example, have a measured quantity of 2000 Kcal. Values between 50 ° C and 110 ° C are assumed as the condensation temperature, which corresponds to a pressure of 0.125 and 1.46 ata. The heat of condensation of 2000 Kcal corresponds to 3557.47 cm 3 water at 50 ° C. The volume of the container corresponds to this volume. The volume difference between 50 ° C and 110 ° C is 392.55 cm 3 .
  • an additional space 16 is provided which extends upward from the container 15, which absorbs the difference in volume and is enlarged by the size of a displacement piston 17, the piston rod 18 of which has its free end filled with expansion liquid and on the bottom of the container 15 upright cylinder 19 is slidably guided.
  • the top of the container 15 also has a measuring tube 20 opening into the additional space 16 from above, on which an inductive filler 21 interacting with an expansion element is arranged at most at the level of the highest capacitor level.
  • a solenoid valve 22 in the pipe string 10 for the condensate is assigned to this filler 21.
  • the latter interacts with a second solenoid valve 23, which is arranged in the pipe string 10 opening above the tank bottom for the condensate.
  • the solenoid valve 22 closes off the tubing string 10 which opens into the tank 15 at the top, and the solenoid valve 23 in the tubing string 10 emerging from the bottom of the tank 15 is opened, whereupon the tank 15 also the additional space 16 is emptied until the condensate level has reached the mouth of the pipe string 10 projecting into the container 15 below.
  • the further emptying is slowed down by a thin drain tube 24 arranged in the bottom of the container and flush with the inside, which opens into the adjacent pipe string 10 and also has an inductive filler 25 which interacts with an expansion element.
  • the solenoid valve 23 is closed again by a pulse emanating from the filler 25 and at the same time the process in the summer 26 to the previous ones Empties added and at the same time the amount of heat measured so far is displayed in Kcal in a display device 27.
  • the safety valve 12 installed in the pipe string 10 for the condensate is specially designed according to FIG. 3. It is essentially formed by a housing 28 which is closed on all sides and has a housing base 29. A bellows 31 filled with expansion fluid or a membrane is arranged on the housing cover 30 and has a pin 32 acting downwards on the opposite closed side. In contrast, in the bottom 29 there is a valve 33 which opens downwards against the action of a spring and through which the contents of the container or the contents of the pipe string 10 running above this valve are emptied into the lower part of the container or into a special collecting container 34 , which has an outlet 35 for the condensate.
  • Heirzu serves either a membrane or a bellows 36, which has a closed bottom and is attached with its open side to the fixed boundary of the opening for the condensate inlet.
  • a helical spring 38 which is guided centrally in the bellows 36 and on a valve stem 37, is supported, the other end of which rests on the bellows base 39, on which the free end of the valve stem 37 also stands.
  • a slightly stronger helical spring 40 acts on the outside of the bellows bottom, which is somewhat stronger than the inner helical spring 38, and which is adjustable and, for example, rests with its other end on the screwable bottom of a pot-shaped housing 41.
  • the housing 41 can also be arranged in a screwable manner on a collar which is fastened to the fixed boundary of the opening for the condensate inlet.
  • the valve stem At the end facing the tubing string 10, the valve stem carries a valve plate 43 which, for example, closes an opening in an intermediate wall 44 between two closed and expanded ends of two adjacent tubing string parts 10 and thereby interrupts the condensate inlet to the evaporator of the heat exchanger 3 on the primary circuit side.
  • a fixed stop 45 which limits the stroke of the valve by the maximum amounts of water, is attached opposite the valve plate 43.
  • Each change in pressure in the transfer circuit causes a change in the length of the bellows 36.
  • This change in length actuates the valve 37, 43, which is thereby opened or closed and closes or opens the opening leading to the evaporator of the primary-side heat exchanger 3.
  • the transfer circuit 5 has an internal pressure of 0.1 ata (45.4 ° C).
  • the effective area of the bellows is 1 cm 2 .
  • the inner coil spring 38 is dimensioned such that the valve 37, 43 connected to the bellows 36 closes when the counterforce of the coil spring 40 is 0.2 Kp. If the temperature is to be increased to 90 ° C., the coil spring 40 is pretensioned to 0.9 Kp.
  • valve 37, 43 opens valve 37, 43 and the condensate flows into the coil or evaporator of the heat exchanger on the primary circuit side until the internal pressure rises from 90 ° C to 0.7 ata according to the desired temperature.
  • the valve 37, 43 closes.
  • the temperature controller 13 is thus also a limiter of the maximum thermal output of the device. This is necessary because the district heating plants prescribe a permissible maximum heat consumption value that no consumer may exceed. In this case, such a limiter must detect the temperature difference between the flow and return and the amount of water in the device.
  • valve stroke By limiting the valve stroke by means of the fixed, optionally adjustable stop 45, it is prevented in a simple manner that the condensate flow rate to the evaporator of the heat exchanger 3 necessary for the maximum heat removal value is exceeded. For example, if the maximum heat consumption value is 200,000 Kcal / h, this value corresponds approximately to the evaporation heat of 377 I / h water. This flow rate is then set at the fixed stop 45 of the temperature controller 13.
  • the temperature controller is not only suitable for heating and hot water control in district heating, but also for solar collectors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
EP78100405A 1977-07-19 1978-07-14 Vorrichtung zum Übertragen von Heizwärme von einer Wärmequelle auf Verbraucherkreise Expired EP0000401B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2732639 1977-07-19
DE19772732639 DE2732639A1 (de) 1977-07-19 1977-07-19 Vorrichtung zum uebertragen von heizwaerme von einer waermequelle auf verbraucherkreise

Publications (2)

Publication Number Publication Date
EP0000401A1 EP0000401A1 (de) 1979-01-24
EP0000401B1 true EP0000401B1 (de) 1980-08-20

Family

ID=6014309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100405A Expired EP0000401B1 (de) 1977-07-19 1978-07-14 Vorrichtung zum Übertragen von Heizwärme von einer Wärmequelle auf Verbraucherkreise

Country Status (2)

Country Link
EP (1) EP0000401B1 (nl)
DE (1) DE2732639A1 (nl)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8005222A (nl) * 1980-09-18 1982-04-16 Apparatenfabriek Warmtebouw B Stads- of blokverwarmingssysteem.
DE3276594D1 (en) * 1981-04-08 1987-07-23 Secretary Industry Brit Improvements in or relating to heat metering
DE3338189A1 (de) * 1983-10-20 1985-06-05 Walter Neukirchen Kroll Verfahren zur waermerueckgewinnung aus abwasser mit gleichzeitiger trinkwassereinsparung
AT387813B (de) * 1987-04-08 1989-03-28 Enerag Energy Resources Ag Verfahren zur warm- und/oder heisswasserbereitung und speicherwasserkraftwerk zur durchfuehrung des verfahrens
FR2651866B1 (fr) * 1989-09-14 1992-04-17 En Et Installation collective de chauffage et/ou de distribution d'eau chaude sanitaire.
CA2134521A1 (en) * 1993-11-02 1995-05-03 Raymond R. Gosselin Tamper-indicating label
US5683774A (en) 1994-12-09 1997-11-04 Minnesota Mining And Manufacturing Company Durable, tamper resistant security laminate
US5510171A (en) * 1995-01-19 1996-04-23 Minnesota Mining And Manufacturing Company Durable security laminate with hologram
US6166365A (en) * 1998-07-16 2000-12-26 Schlumberger Technology Corporation Photodetector and method for manufacturing it
SE517497C2 (sv) * 2000-10-24 2002-06-11 Alfa Laval Ab Fjärrvärmearrangemang och förfarande för att driva ett fjärrvärmearangemang

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE47258C (de) * 1900-01-01 NATIONAL HEAT-ING COMPANY in New-York, 44 Broadway Heizungsanlage mit Dampferzeu-• gung ans überhitztem Wasser
DE13525C (de) * 1900-01-01 prall foreign patent company in New-York Neuerungen in der Leitung und Verwendung von Wärme zu Heiz- und Betriebszwecken und den hierzu in Anwendung kommenden Apparaten,
FR750486A (fr) * 1932-02-10 1933-08-11 Installation de distribution d'eau chaude pour plusieurs consommateurs, à mesure indirecte de la quantité de chaleur consommée
CH187961A (de) * 1935-12-13 1936-12-15 Sulzer Ag Heisswasseranlage, insbesondere Heisswasserfernheizung.
FR2276539A1 (fr) * 1974-06-25 1976-01-23 Couillaud Paul Systeme de transport et distribution de chaleur par circuit direct de fluides chauds, sans branchements

Also Published As

Publication number Publication date
EP0000401A1 (de) 1979-01-24
DE2732639C2 (nl) 1987-03-19
DE2732639A1 (de) 1979-02-01

Similar Documents

Publication Publication Date Title
EP0000401B1 (de) Vorrichtung zum Übertragen von Heizwärme von einer Wärmequelle auf Verbraucherkreise
DE3235364C2 (de) Warmwasser-Heizungsanlage
EP0013045B1 (de) Dampferzeugeranlage
AT409182B (de) Anlage zur gewinnung von wärme aus solarenergie
DE2753660A1 (de) Waermetransportsystem mit einer vorrichtung zur unterbrechung des waermetransportmittelrueckflusses
DE3101138A1 (de) Waermepumpe mit waermetauschern
DE4126629A1 (de) Sekundaerseitiges nachwaermeabfuhrsystem fuer druckwasser-kernreaktoren
DE202009003093U1 (de) Heizungsanlage und Vorrichtung zum Verteilen eines Heizmediums
DE4432464C2 (de) Verfahren und Anlage zum Erhitzen von Wasser mittels Dampf aus dem Dampfnetz einer Fernheizung
DE19508061A1 (de) Steuerung für eine Durchflußwarmwasserbereitungsanlage
DE1753298A1 (de) Haushalts-Warmwasserbereiter
DE102009051209A1 (de) Einrichtung zur Temperaturregelung eines Raumes mit mindestens einer mit einem Wärmeträger betriebenen Heizeinrichtung
DE2727176A1 (de) Solare heizungs/kraftwerksanlage
DE3004324A1 (de) Vorrichtung zur regelung einer heizungsanlage mit wenigstens einer einrichtung zur gewinnung von waerme aus einem absorber
WO2009074145A2 (de) Verfahren zum steuern oder regeln einer heizungsanlage und heizanlage
DE3108936A1 (de) "vorrichtung zum druck- und mengenaustausch"
DE19618093C2 (de) Vorrichtung zur Regelung der Temperatur von Brauchwasser
DE3308447C2 (de) Vorrichtung zur Warmwassererzeugung
CH636948A5 (en) Device for accumulating and releasing the heat of a fluid heated by the sun
AT158683B (de) Dampferzeuger.
DE2027496A1 (de) Dampfheizungsanlage
CH670298A5 (nl)
DE13525C (de) Neuerungen in der Leitung und Verwendung von Wärme zu Heiz- und Betriebszwecken und den hierzu in Anwendung kommenden Apparaten,
DE1579854B1 (de) Temperaturregler fuer an einen Primaerheizmittelkreislauf angeschlossene Sammelheizungsanlagen
DE538029C (de) Verfahren und Vorrichtung zum Regeln der Heizleistung einer Heizanlage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH FR GB NL SE

17P Request for examination filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH FR GB NL SE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19840724

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19840821

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19840930

Year of fee payment: 7

Ref country code: BE

Payment date: 19840930

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19850731

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19860715

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19860731

Ref country code: BE

Effective date: 19860731

BERE Be: lapsed

Owner name: MAJOROS ISTVAN

Effective date: 19860731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19870201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19870331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881117

EUG Se: european patent has lapsed

Ref document number: 78100405.6

Effective date: 19870518

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT