EP1026446A1 - Air gas regulating system - Google Patents

Air gas regulating system Download PDF

Info

Publication number
EP1026446A1
EP1026446A1 EP99830060A EP99830060A EP1026446A1 EP 1026446 A1 EP1026446 A1 EP 1026446A1 EP 99830060 A EP99830060 A EP 99830060A EP 99830060 A EP99830060 A EP 99830060A EP 1026446 A1 EP1026446 A1 EP 1026446A1
Authority
EP
European Patent Office
Prior art keywords
gas
valve
correct
regulating system
multifunctional
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.)
Granted
Application number
EP99830060A
Other languages
German (de)
French (fr)
Other versions
EP1026446B1 (en
Inventor
designation of the inventor has not yet been filed The
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.)
Riello SpA
Original Assignee
Iaber SpA
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 Iaber SpA filed Critical Iaber SpA
Priority to AT99830060T priority Critical patent/ATE276484T1/en
Priority to DE69920158T priority patent/DE69920158T2/en
Priority to EP99830060A priority patent/EP1026446B1/en
Priority to ES99830060T priority patent/ES2226327T3/en
Publication of EP1026446A1 publication Critical patent/EP1026446A1/en
Application granted granted Critical
Publication of EP1026446B1 publication Critical patent/EP1026446B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/005—Regulating fuel supply using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/26—Measuring humidity
    • F23N2225/30—Measuring humidity measuring lambda
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/06—Ventilators at the air intake
    • F23N2233/08—Ventilators at the air intake with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/14—Fuel valves electromagnetically operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/18—Groups of two or more valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods

Definitions

  • the air-gas regulating system adjusts the speed of the vent depending upon the needs of the installation for heat.
  • a multifunctional gas valve delivers the correct amount of gas for the correct combustion value, which is controlled by the ionization electrode.
  • the weak areas of this kind of system are as follows: the complexity of its construction, the need for many parts, springs, openings, a membrane, the need to calibrate the system, and hysteresis generated by the magnet modulating between the rising and falling current.
  • the valve we are proposing is composed of a body, normally made of aluminum, together with the usual parts for connections and for detecting the input and output pressure, a magnetic safety valve suitable for the category of the application requirements, and a second safety and modulation valve.
  • This valve is special because it is controlled by an impulse linear motor, for example 0.1 - 0.2 mm per pulse. The linear motor opens and closes the valve at each pulse received, and safety is an integral feature: upon the appropriate command or if there is no current, it automatically shuts off the gas valve.
  • a differential analog switch detects the quantity of air for combustion, and by referencing this value, using the above valve we can consistently measure out the quantity of gas required (thermal output) without having to worry about variables in the gas, such as its thermal output (for the same family of gases), or upstream pressure.
  • the amount of gas being delivered by the valve will always comply with requirements.
  • the modulation process is very precise, and there are no errors due to hysteresis.
  • a multifunctional gas valve composed of an electromagnet valve and an impulse linear motor valve.
  • modulating the gas, stabilizing gas pressure when the pressure upstream varies, regulating the delivery of gas if the type of gas from among the different groups of gases within the same family varies this system is also innovative in that it is simple to build, requires no calibration, and the minimum and maximum limit values detected by the differential analog switch and stored in the memory of the microprocessor are sufficient for delivering the correct amount of gas at the maximum and minimum values.
  • This gas valve is built like the previous valve, except that it has a pressure sensor at the output of the valve itself. It is this pressure sensor which determines the quantity of gas to be modulated, still by means of the impulse linear motor. The pressure sensor controls modulation within the required parameters, which are managed by a microprocessor, for example.
  • This valve can also be used on natural draft boilers (which do not have a vent and differential analog switch). Using pressure as the reference parameter, the valve cannot regulate the delivery of heat if the calorific value of the gas varies.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Flow Control (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Incineration Of Waste (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Electrostatic Separation (AREA)

Abstract

The air-gas regulating system adjusts the speed of the vent depending upon the needs of the installation.
As a result, a multifunctional gas valve delivers the correct amount of gas for the correct combustion value, which is controlled by the ionization electrode.

Description

  • This system exists in two versions. It can be used either as described in Patent M1950-000566 "Air-Gas Control System for Low Emission Burners on Wall-Mounted Gas Boilers with Air-Tight Chambers", which is currently being registered, or it can be used on more traditional gas equipment.
    • Version 1
  • The air-gas regulating system adjusts the speed of the vent depending upon the needs of the installation for heat. As a result, a multifunctional gas valve delivers the correct amount of gas for the correct combustion value, which is controlled by the ionization electrode.
  • The proposals for a patent involve the manufacture and operation of this multifunctional gas valve. Currently, we are using valves made by other manufacturers whose operating principles are very similar. Two electromagnets safely control the flow of gas, by cutting off the flow depending upon the category of the application requirements. Normally, a third electromagnet (in some cases, 1 of the 2 electromagnets above is used) proportionately measures out the quantity of gas required (modulation). A membrane system stabilizes the pressure of the gas.
  • The weak areas of this kind of system are as follows: the complexity of its construction, the need for many parts, springs, openings, a membrane, the need to calibrate the system, and hysteresis generated by the magnet modulating between the rising and falling current. The valve we are proposing is composed of a body, normally made of aluminum, together with the usual parts for connections and for detecting the input and output pressure, a magnetic safety valve suitable for the category of the application requirements, and a second safety and modulation valve. This valve is special because it is controlled by an impulse linear motor, for example 0.1 - 0.2 mm per pulse. The linear motor opens and closes the valve at each pulse received, and safety is an integral feature: upon the appropriate command or if there is no current, it automatically shuts off the gas valve.
  • In the modulating air-gas system, a differential analog switch detects the quantity of air for combustion, and by referencing this value, using the above valve we can consistently measure out the quantity of gas required (thermal output) without having to worry about variables in the gas, such as its thermal output (for the same family of gases), or upstream pressure. By referencing the quantity of air for combustion, the amount of gas being delivered by the valve will always comply with requirements. The modulation process is very precise, and there are no errors due to hysteresis.
    • Our claim:
  • A multifunctional gas valve composed of an electromagnet valve and an impulse linear motor valve. As well as meeting all the safety requirements, modulating the gas, stabilizing gas pressure when the pressure upstream varies, regulating the delivery of gas if the type of gas from among the different groups of gases within the same family varies, this system is also innovative in that it is simple to build, requires no calibration, and the minimum and maximum limit values detected by the differential analog switch and stored in the memory of the microprocessor are sufficient for delivering the correct amount of gas at the maximum and minimum values.
    • Version 2
  • This gas valve is built like the previous valve, except that it has a pressure sensor at the output of the valve itself. It is this pressure sensor which determines the quantity of gas to be modulated, still by means of the impulse linear motor. The pressure sensor controls modulation within the required parameters, which are managed by a microprocessor, for example.
  • This valve can also be used on natural draft boilers (which do not have a vent and differential analog switch). Using pressure as the reference parameter, the valve cannot regulate the delivery of heat if the calorific value of the gas varies.
  • Our claims for a patent could be considered to be the same as the previous ones, with the exception of being able to regulate the delivery of heat.
  • 1. Gas entry
  • 2. Power point upstream
  • 3. First gas clocking choke composed by electric magnet
  • 4. Second clocking and gas tuning
  • 5. Power point downstream
  • 6. Walking gas

Claims (3)

  1. The system regulates the speed of the vent depending upon the needs of the installation for heat. As a result, a multifunctional gas valve delivers the correct amount of gas for the correct combustion value.
  2. Two electromagnets stop the flow of gas depending upon the category of the application requirements
  3. The multifunctional gas valve is composed of one electromagnetic valve, and a second impulse linear motor valve.
    This is an innovative system because of its simple design and the fact that it does not need to be calibrated. The minimum and maximum limit values detected by the differential analog switch and stored in the microprocessor are sufficient for delivering the correct minimum and maximum amounts of gas.
EP99830060A 1999-02-03 1999-02-03 Gas regulating system Expired - Lifetime EP1026446B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT99830060T ATE276484T1 (en) 1999-02-03 1999-02-03 GAS CONTROL SYSTEM
DE69920158T DE69920158T2 (en) 1999-02-03 1999-02-03 Gas control system
EP99830060A EP1026446B1 (en) 1999-02-03 1999-02-03 Gas regulating system
ES99830060T ES2226327T3 (en) 1999-02-03 1999-02-03 GAS REGULATORY SYSTEM.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99830060A EP1026446B1 (en) 1999-02-03 1999-02-03 Gas regulating system

Publications (2)

Publication Number Publication Date
EP1026446A1 true EP1026446A1 (en) 2000-08-09
EP1026446B1 EP1026446B1 (en) 2004-09-15

Family

ID=8243266

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99830060A Expired - Lifetime EP1026446B1 (en) 1999-02-03 1999-02-03 Gas regulating system

Country Status (4)

Country Link
EP (1) EP1026446B1 (en)
AT (1) ATE276484T1 (en)
DE (1) DE69920158T2 (en)
ES (1) ES2226327T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2435686A (en) * 2006-02-27 2007-09-05 Isphording Germany Gmbh Linear Motor Actuated Valve Arrangement for a Gas Installation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3046595A1 (en) * 1980-12-11 1982-07-22 G. Kromschröder AG, 4500 Osnabrück Regulator for flow control valve - has solenoid actuator with displacement feedback to input to poppet valve to control feed flow
JPS6026866A (en) * 1983-07-20 1985-02-09 Matsushita Electric Ind Co Ltd Flow rate control device
US4723753A (en) * 1985-11-19 1988-02-09 Mitsubishi Renki K.K. Flow rate control valve system
EP0669499A1 (en) * 1994-02-22 1995-08-30 SIT LA PRECISA S.r.l. Device for regulating and controlling the flow of gas to burners of domestic boilers
EP0806610A2 (en) * 1996-05-09 1997-11-12 STIEBEL ELTRON GmbH & Co. KG Method and device for operating a gas burner
EP0887591A2 (en) * 1997-06-27 1998-12-30 Honeywell Inc. Fail-safe gas valve system with solid-state drive circuit
EP0909922A1 (en) * 1997-10-17 1999-04-21 IABER S.p.A. Combined gas-air control system for controlling combustion in gas fired boilers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3046595A1 (en) * 1980-12-11 1982-07-22 G. Kromschröder AG, 4500 Osnabrück Regulator for flow control valve - has solenoid actuator with displacement feedback to input to poppet valve to control feed flow
JPS6026866A (en) * 1983-07-20 1985-02-09 Matsushita Electric Ind Co Ltd Flow rate control device
US4723753A (en) * 1985-11-19 1988-02-09 Mitsubishi Renki K.K. Flow rate control valve system
EP0669499A1 (en) * 1994-02-22 1995-08-30 SIT LA PRECISA S.r.l. Device for regulating and controlling the flow of gas to burners of domestic boilers
EP0806610A2 (en) * 1996-05-09 1997-11-12 STIEBEL ELTRON GmbH & Co. KG Method and device for operating a gas burner
EP0887591A2 (en) * 1997-06-27 1998-12-30 Honeywell Inc. Fail-safe gas valve system with solid-state drive circuit
EP0909922A1 (en) * 1997-10-17 1999-04-21 IABER S.p.A. Combined gas-air control system for controlling combustion in gas fired boilers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 149 (M - 390) 25 June 1985 (1985-06-25) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2435686A (en) * 2006-02-27 2007-09-05 Isphording Germany Gmbh Linear Motor Actuated Valve Arrangement for a Gas Installation

Also Published As

Publication number Publication date
ATE276484T1 (en) 2004-10-15
EP1026446B1 (en) 2004-09-15
DE69920158D1 (en) 2004-10-21
DE69920158T2 (en) 2005-10-20
ES2226327T3 (en) 2005-03-16

Similar Documents

Publication Publication Date Title
KR890001344B1 (en) Regenerating apparatus for diesel particulate filter
US7523762B2 (en) Modulating gas valves and systems
US5860411A (en) Modulating gas valve furnace control method
US7513117B2 (en) Method for operating a furnace
US6939127B2 (en) Method and device for adjusting air ratio
US8635997B2 (en) Systems and methods for controlling gas pressure to gas-fired appliances
US6749423B2 (en) System and methods for modulating gas input to a gas burner
US5307990A (en) Adaptive forced warm air furnace using analog temperature and pressure sensors
EP3228936B1 (en) Method for operating a gas burner appliance
CA2165864A1 (en) Flow Control System
US4436506A (en) Control system for a gas heated water or air heater
EP0909922B1 (en) Combined gas-air control system for controlling combustion in gas fired boilers
US20060292505A1 (en) System for controlling the delivery of a fuel gas to a burner apparatus
EP1026446A1 (en) Air gas regulating system
CA1228795A (en) Fuel gas control
GB2237665A (en) Boiler control
US20230090905A1 (en) Flame monitoring device for a gas burner appliance and gas burner appliance
EP2623865A1 (en) Gas burner, method for operating the same and multi gas burner system
EP0250667B1 (en) Control of fluid temperature in a wet central heating system and components suitable for a central heating system
EP1039225A3 (en) A valve unit for regulating the flow-rate of a fuel gas
EP4092325B1 (en) Method and controller for operating a gas burner appliance
TW257830B (en) A burner
JP3750062B2 (en) Gas flow control device
KR20060117906A (en) A system for controlling the delivery of a fuel gas to a burner apparatus
EP0131235A1 (en) Heating System

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

17P Request for examination filed

Effective date: 20000531

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT PAYMENT 20000601;LV PAYMENT 20000601;MK;RO;SI PAYMENT 20000601

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AXX Extension fees paid

Free format text: LT PAYMENT 20000601;LV PAYMENT 20000601;SI PAYMENT 20000601

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TAGLIAFERRI, MARCO, ING.

17Q First examination report despatched

Effective date: 20020628

RTI1 Title (correction)

Free format text: GAS REGULATING SYSTEM

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RTI1 Title (correction)

Free format text: GAS REGULATING SYSTEM

RTI1 Title (correction)

Free format text: GAS REGULATING SYSTEM

RTI1 Title (correction)

Free format text: GAS REGULATING SYSTEM

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: RIELLO S.P.A.

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Extension state: LT LV SI

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

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040915

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040915

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040915

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040915

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040915

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69920158

Country of ref document: DE

Date of ref document: 20041021

Kind code of ref document: P

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041215

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041215

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041215

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

Ref country code: LU

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

Effective date: 20050203

Ref country code: IE

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

Effective date: 20050203

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050203

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20040915

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

Ref country code: MC

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

Effective date: 20050228

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2226327

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

ET Fr: translation filed
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

26N No opposition filed

Effective date: 20050616

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: GC

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

Ref country code: PT

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

Effective date: 20050215

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: RG

Effective date: 20161115

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: NL

Ref legal event code: RF

Free format text: RIGHT OF PLEDGE, REMOVED

Effective date: 20171218

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

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

Ref country code: NL

Payment date: 20180223

Year of fee payment: 20

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

Ref country code: GB

Payment date: 20180227

Year of fee payment: 20

Ref country code: ES

Payment date: 20180322

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20180227

Year of fee payment: 20

Ref country code: IT

Payment date: 20180208

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20180430

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69920158

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MK

Effective date: 20190202

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20190202

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20190202

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20200721

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20190204