EP0772007A2 - Ventilateur à jet d'air - Google Patents

Ventilateur à jet d'air Download PDF

Info

Publication number
EP0772007A2
EP0772007A2 EP96117214A EP96117214A EP0772007A2 EP 0772007 A2 EP0772007 A2 EP 0772007A2 EP 96117214 A EP96117214 A EP 96117214A EP 96117214 A EP96117214 A EP 96117214A EP 0772007 A2 EP0772007 A2 EP 0772007A2
Authority
EP
European Patent Office
Prior art keywords
jet fan
jet
booster ring
casing
electric motor
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
EP96117214A
Other languages
German (de)
English (en)
Other versions
EP0772007A3 (fr
EP0772007B1 (fr
Inventor
Masaru Murayama
Shigeki Kondo
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.)
Panasonic Ecology Systems Co Ltd
Original Assignee
Matsushita Seiko Co Ltd
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 Matsushita Seiko Co Ltd filed Critical Matsushita Seiko Co Ltd
Publication of EP0772007A2 publication Critical patent/EP0772007A2/fr
Publication of EP0772007A3 publication Critical patent/EP0772007A3/fr
Application granted granted Critical
Publication of EP0772007B1 publication Critical patent/EP0772007B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/003—Ventilation of traffic tunnels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • F04D29/547—Ducts having a special shape in order to influence fluid flow

Definitions

  • the present invention relates to an axial fan mounted on a ceiling portion of a tunnel for blowing out a jet to ventilate the inside of the tunnel.
  • This kind of axial fan is generally called the jet fan.
  • the jet fan mounted in the tunnel generates a thrust to induce a longitudinal flow of air for ventilation of air inside the tunnel.
  • the air inside the tunnel receives from the jet fan a pressure equal to a value obtained by dividing the generated thrust by the sectional area of the tunnel.
  • Fig. 9 depicts a conventional jet fan comprising a cylindrical casing 101, an electric motor 102 accommodated therein, and an impeller 103 directly connected to the electric motor 102.
  • the jet fan shown in Fig. 9 also comprises generally cylindrical front and rear silencers 104 for absorbing noise generated by the impeller 103.
  • Fig. 10 depicts another conventional jet fan having a plurality of inlet guide vanes 105.
  • Fig. 11 depicts a further conventional jet fan having a plurality of outlet guide vanes 106.
  • the thrust generated thereby is determined as the product of three values, the air density, the mass low rate passing through the jet fan, and the speed of a jet blown out of the silencer 104. Accordingly, only an increase in either the mass flow rate or the speed of the jet results in an increase in thrust.
  • the present invention has been developed to overcome the above-described disadvantages.
  • Another objective of the present invention is to provide the jet fan of the above-described type which has a simple construction and can be manufactured at a low cost.
  • the jet fan according to the present invention comprises a generally cylindrical casing, an electric motor accommodated therein, and an impeller connected to the electric motor, and is characterized by at least one booster ring disposed concentrically with the casing and located downstream thereof with respect to a direction of an air flow.
  • the booster ring has an aerofoil or arcuated plate sectional profile as viewed in a direction transverse to a longitudinal axis of the casing.
  • the booster ring has an upper surface of aerofoil or arcuated plate sectional profile as its inner surface, and has a leading edge facing an air outlet of the jet fan and a trailing edge of a diameter smaller than that of the leading edge but greater than that of the air outlet.
  • the above-described construction generates a lift and a drag on the booster ring by making use of a flow of air resulting from ambient air drawn into a high-speed jet.
  • a resultant force of the lift and the drag has an axial component force directed opposite to the direction of the jet and creating a thrust on the booster ring.
  • the jet fan of the present invention can further increase the air pressure inside the tunnel compared with the conventional jet fan having no booster ring.
  • the jet fan comprises a generally cylindrical casing 1, an electric motor 2 accommodated therein, an impeller 3 directly connected to the electric motor 2, and generally cylindrical front and rear silencers 4 for absorbing noise generated by the impeller 3.
  • the jet fan further comprises a booster ring 8 having an aerofoil or arcuated plate sectional profile as viewed in a direction transverse to the longitudinal axis of the casing 1.
  • the booster ring 8 is secured to the generally cylindrical rear silencer 4 in concentric relation therewith via a plurality of radial ribs 7.
  • the booster ring 8 has an upper surface of aerofoil or arcuated plate sectional profile as its inner surface, and also has a leading edge facing an air or jet outlet of the jet fan and a trailing edge of a diameter smaller than that of the leading edge but greater than that of the air outlet.
  • Fig. 7 indicates one example of measurement results of the thrust Tt exerting on the booster ring 8 while Fig. 8 depicts a booster ring used in the measurement.
  • Fig. 7 indicates a relationship between the distance (x) from the jet outlet (outlet diameter: 100 mm) to the leading edge of the booster ring 8 and the thrust Tt exerting on the booster ring with the speed of the jet as a parameter.
  • Fig. 7 reveals that the thrust Tt has been generated on the booster ring when the speed of the jet is 8 m/s, 17.7 m/s, 21.7 m/s or 27.7 m/s and when the distance (x) ranges 0 to 350 mm.
  • the jet receives a booster force Fj in the direction of the jet. Accordingly, the provision of the booster ring 8 as shown in Fig. 1 allows the jet fan to have an increased thrust and a higher efficiency, thus making it possible to increase the air pressure inside the tunnel.
  • the booster ring 8 may have an arcuated plate section as far as it has a streamline-shaped inner surface. It is further to be noted that the booster ring 8 may be made of a ring-shaped generally flat plate. In this case, however, the generally flat plate is bent so as to have a radially inwardly protruding generally arcuated shape in the direction of the jet.
  • radial ribs 7 may have a polygonal section such as a rectangular section or a round section, they preferably have a streamline section to reduce air resistance or pressure loss.
  • Fig. 2 depicts a jet fan according to a second embodiment of the present invention, which is of a structure similar to the jet fan of Fig. 1, but further comprises a plurality of inlet guide vanes 5 fixedly mounted around the electric motor 2 located upstream of the impeller 3 with respect to a direction of the air flow.
  • Fig. 3 depicts a jet fan according to a third embodiment of the present invention, which is of a structure similar to the jet fan of Fig. 1, but further comprises a plurality of outlet guide vanes 6 fixedly mounted around the electric motor 2 located downstream of the impeller 3 with respect to the direction of the air flow.
  • Each of the structures shown in Figs. 2 and 3 can reduce the rotating component of the air flow generated by the impeller 3. Accordingly, the thrust generated by the jet fan and the efficiency thereof can be further enhanced, compared with the jet fan of Fig. 1, to thereby increase the air pressure inside the tunnel.
  • Fig. 4 depicts a jet fan according to a fourth embodiment of the present invention, which is of a structure identical to the jet fan of Fig. 1, but has another booster ring 8 secured to the generally cylindrical rear silencer 4 in concentric relation therewith via a plurality of radial ribs 7.
  • jet fan shown in Figs. 1 to 4 has one or two booster rings 8, it may have three or more booster rings disposed concentrically with one another.
  • Fig. 5 depicts a jet fan according to a fifth embodiment of the present invention, which comprises a generally cylindrical casing 1, an electric motor 2 accommodated therein, an impeller 3 directly connected to the electric motor 2, and generally cylindrical front and rear silencers 4.
  • the jet fan of Fig. 5 further comprises a booster ring 8 not connected directly thereto but secured to the ceiling of the tunnel via a support rod 9 so that the casing 1 and the booster ring 8 are axially aligned in concentric relation.
  • one or more booster rings 8 disposed concentrically with the casing 1 contribute to an increase in thrust and also in efficiency, thus increasing the air pressure inside the tunnel. Accordingly, supposing that the amount of ventilation required is the same, the jet fan of the present invention can reduce the power consumption or the number thereof can be reduced compared with the conventional case.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP96117214A 1995-10-30 1996-10-26 Ventilateur à jet d'air Expired - Lifetime EP0772007B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP28128295A JP3575891B2 (ja) 1995-10-30 1995-10-30 ブースターファン
JP281282/95 1995-10-30
JP28128295 1995-10-30

Publications (3)

Publication Number Publication Date
EP0772007A2 true EP0772007A2 (fr) 1997-05-07
EP0772007A3 EP0772007A3 (fr) 2000-05-03
EP0772007B1 EP0772007B1 (fr) 2004-02-04

Family

ID=17636907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117214A Expired - Lifetime EP0772007B1 (fr) 1995-10-30 1996-10-26 Ventilateur à jet d'air

Country Status (5)

Country Link
EP (1) EP0772007B1 (fr)
JP (1) JP3575891B2 (fr)
KR (1) KR0174803B1 (fr)
DE (1) DE69631459T2 (fr)
TW (1) TW397888B (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012085525A1 (fr) * 2010-12-23 2012-06-28 Dyson Technology Limited Ensemble ventilateur comprenant une tuyère annulaire et un support de montage au plafond
WO2012085526A1 (fr) * 2010-12-23 2012-06-28 Dyson Technology Limited Ventilateur de plafond sans pales comprenant une tuyère annulaire et un ensemble de support pour le montage au plafond
US9004858B2 (en) 2010-12-23 2015-04-14 Dyson Technology Limited Fan
US9062685B2 (en) 2011-07-15 2015-06-23 Dyson Technology Limited Fan assembly with tangential air inlet
WO2016081693A1 (fr) * 2014-11-21 2016-05-26 Airius Ip Holdings, Llc Appareil de ventilation
US9534610B2 (en) 2011-07-15 2017-01-03 Dyson Technology Limited Fan discharge duct having a scroll section
US9631627B2 (en) 2004-03-15 2017-04-25 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US9702576B2 (en) 2013-12-19 2017-07-11 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US9797413B2 (en) 2011-07-15 2017-10-24 Dyson Technology Limited Bladeless ceiling fan
US9970457B2 (en) 2008-05-30 2018-05-15 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US10024531B2 (en) 2013-12-19 2018-07-17 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US10221861B2 (en) 2014-06-06 2019-03-05 Airius Ip Holdings Llc Columnar air moving devices, systems and methods
CN110207307A (zh) * 2019-07-01 2019-09-06 兰州大学 一种室内智能通风系统
US10487852B2 (en) 2016-06-24 2019-11-26 Airius Ip Holdings, Llc Air moving device
USD885550S1 (en) 2017-07-31 2020-05-26 Airius Ip Holdings, Llc Air moving device
USD886275S1 (en) 2017-01-26 2020-06-02 Airius Ip Holdings, Llc Air moving device
USD887541S1 (en) 2019-03-21 2020-06-16 Airius Ip Holdings, Llc Air moving device
WO2020214729A1 (fr) * 2019-04-17 2020-10-22 Airius Ip Holdings, Llc Dispositif de déplacement d'air avec admission de dérivation
USD926963S1 (en) 2012-05-15 2021-08-03 Airius Ip Holdings, Llc Air moving device
GB2594045A (en) * 2020-03-31 2021-10-20 Titon Hardware Fans for ventilation

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2721352B1 (fr) 2011-06-15 2015-09-16 Airius IP Holdings, LLC Dispositifs et systèmes de déplacement d'air en colonne
JP1518059S (fr) 2014-01-09 2015-02-23
JP1518058S (fr) 2014-01-09 2015-02-23
JP6518122B2 (ja) * 2015-04-28 2019-05-22 エビスマリン株式会社 流体流動装置
USD820967S1 (en) 2016-05-06 2018-06-19 Airius Ip Holdings Llc Air moving device
USD805176S1 (en) 2016-05-06 2017-12-12 Airius Ip Holdings, Llc Air moving device
KR102166065B1 (ko) 2018-08-06 2020-10-15 주식회사 코스칼드바이오 생체 용해성 마이크로니들 어레이 및 이의 제작 방법

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1181456A (fr) * 1957-08-07 1959-06-16 Dispositif destiné à améliorer les performances d'un corps fuselé propulsé dans un fluide
AT308807B (de) * 1968-01-15 1973-06-15 Sina In Nat Autostradali Anlage zur laengsbelueftung eines einbahnigen tunnels
JPH08121836A (ja) * 1994-10-25 1996-05-17 Matsushita Electric Ind Co Ltd ジェットファンおよび推力増強装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9714663B1 (en) 2004-03-15 2017-07-25 Airius Ip Holdings, Llc Temperature destratification systems
US11053948B2 (en) 2004-03-15 2021-07-06 Airius Ip Holdings, Llc Temperature destratification systems
US10487840B2 (en) 2004-03-15 2019-11-26 Airius Ip Holdings, Llc Temperature destratification systems
US11365743B2 (en) 2004-03-15 2022-06-21 Airius Ip Holdings, Llc Temperature destratification systems
US11703062B2 (en) 2004-03-15 2023-07-18 Airius Ip Holdings, Llc Temperature destratification systems
US12085084B2 (en) 2004-03-15 2024-09-10 Airius Ip Holdings, Llc Temperature destratification systems
US9631627B2 (en) 2004-03-15 2017-04-25 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US9970457B2 (en) 2008-05-30 2018-05-15 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
WO2012085525A1 (fr) * 2010-12-23 2012-06-28 Dyson Technology Limited Ensemble ventilateur comprenant une tuyère annulaire et un support de montage au plafond
WO2012085526A1 (fr) * 2010-12-23 2012-06-28 Dyson Technology Limited Ventilateur de plafond sans pales comprenant une tuyère annulaire et un ensemble de support pour le montage au plafond
US9004858B2 (en) 2010-12-23 2015-04-14 Dyson Technology Limited Fan
US9797411B2 (en) 2010-12-23 2017-10-24 Dyson Technology Limited Fan
US9194596B2 (en) 2010-12-23 2015-11-24 Dyson Technology Limited Ducted ceiling mounted fan
US10184489B2 (en) 2011-06-15 2019-01-22 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US9534610B2 (en) 2011-07-15 2017-01-03 Dyson Technology Limited Fan discharge duct having a scroll section
US9062685B2 (en) 2011-07-15 2015-06-23 Dyson Technology Limited Fan assembly with tangential air inlet
US9797413B2 (en) 2011-07-15 2017-10-24 Dyson Technology Limited Bladeless ceiling fan
USD926963S1 (en) 2012-05-15 2021-08-03 Airius Ip Holdings, Llc Air moving device
US10024531B2 (en) 2013-12-19 2018-07-17 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US9702576B2 (en) 2013-12-19 2017-07-11 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US10641506B2 (en) 2013-12-19 2020-05-05 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US10655841B2 (en) 2013-12-19 2020-05-19 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US11221153B2 (en) 2013-12-19 2022-01-11 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US11092330B2 (en) 2013-12-19 2021-08-17 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US11236766B2 (en) 2014-06-06 2022-02-01 Airius Ip Holdings Llc Columnar air moving devices, systems and methods
US10724542B2 (en) 2014-06-06 2020-07-28 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US11713773B2 (en) 2014-06-06 2023-08-01 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US10221861B2 (en) 2014-06-06 2019-03-05 Airius Ip Holdings Llc Columnar air moving devices, systems and methods
WO2016081693A1 (fr) * 2014-11-21 2016-05-26 Airius Ip Holdings, Llc Appareil de ventilation
US11421710B2 (en) 2016-06-24 2022-08-23 Airius Ip Holdings, Llc Air moving device
US11105341B2 (en) 2016-06-24 2021-08-31 Airius Ip Holdings, Llc Air moving device
US10487852B2 (en) 2016-06-24 2019-11-26 Airius Ip Holdings, Llc Air moving device
USD886275S1 (en) 2017-01-26 2020-06-02 Airius Ip Holdings, Llc Air moving device
USD885550S1 (en) 2017-07-31 2020-05-26 Airius Ip Holdings, Llc Air moving device
USD887541S1 (en) 2019-03-21 2020-06-16 Airius Ip Holdings, Llc Air moving device
US11781761B1 (en) 2019-04-17 2023-10-10 Airius Ip Holdings, Llc Air moving device with bypass intake
US11598539B2 (en) 2019-04-17 2023-03-07 Airius Ip Holdings, Llc Air moving device with bypass intake
GB2596757A (en) * 2019-04-17 2022-01-05 Airius Ip Holdings Llc Air moving device with bypass intake
GB2596757B (en) * 2019-04-17 2023-09-13 Airius Ip Holdings Llc Air moving device with bypass intake
WO2020214729A1 (fr) * 2019-04-17 2020-10-22 Airius Ip Holdings, Llc Dispositif de déplacement d'air avec admission de dérivation
GB2617743A (en) * 2019-04-17 2023-10-18 Airius Ip Holdings Llc Air moving device with bypass intake
GB2617743B (en) * 2019-04-17 2024-04-03 Airius Ip Holdings Llc Air moving device with bypass intake
US12259156B2 (en) 2019-04-17 2025-03-25 Airius Ip Holdings, Llc Air moving device with bypass intake
AU2020257205B2 (en) * 2019-04-17 2026-01-08 Airius Ip Holdings, Llc Air moving device with bypass intake
CN110207307A (zh) * 2019-07-01 2019-09-06 兰州大学 一种室内智能通风系统
GB2594045A (en) * 2020-03-31 2021-10-20 Titon Hardware Fans for ventilation

Also Published As

Publication number Publication date
TW397888B (en) 2000-07-11
KR970021784A (ko) 1997-05-28
EP0772007A3 (fr) 2000-05-03
KR0174803B1 (ko) 1999-03-20
JP3575891B2 (ja) 2004-10-13
DE69631459D1 (de) 2004-03-11
JPH09126194A (ja) 1997-05-13
DE69631459T2 (de) 2004-06-24
EP0772007B1 (fr) 2004-02-04

Similar Documents

Publication Publication Date Title
EP0772007B1 (fr) Ventilateur à jet d'air
EP0486544B1 (fr) Soufflante a grand debit
KR100548036B1 (ko) 축류팬용 안내깃과 그 안내깃을 구비한 축류팬 슈라우드 조립체
EP0267725B1 (fr) Ventilateur à courant axial
EP1906028A1 (fr) Ventilateur axial
CN209743192U (zh) 斜流风机
JP2001501284A (ja) 軸流ファン
JPH10122188A (ja) 遠心送風機
CN112352107A (zh) 用于降噪的风扇的离心叶轮的布置
EP0168594B1 (fr) Ventilateur axial
CN212274121U (zh) 一种空调室外机及其出风格栅
JPH05321891A (ja) 多翼ファン
US4705453A (en) Tangential blower
JP2921384B2 (ja) 斜流ファン
JP2004218450A (ja) 遠心式送風機
WO2001005652A1 (fr) Turbine centrifuge a courbure de pale elevee
EP1916423A1 (fr) Ventilateur axial
JP2019019759A (ja) 遠心ファンインペラおよび当該遠心ファンインペラを備える遠心ファン
KR102003992B1 (ko) 기류 안정화와 효율을 극대화 시킨 송풍기 모듈
US20160032944A1 (en) Centrifugal blower and method of assembling the same
JPH01315697A (ja) 軸流ファン
US20230011063A1 (en) Vacuum cleaner impeller and diffuser
JP4423921B2 (ja) 遠心送風機及びこれを用いた空気調和機
CN215409408U (zh) 离心风叶、风机以及空调室内机
WO1990009526A1 (fr) Ventilateur centrifuge dote de pales a profile d'aile dans une enveloppe annulaire en volute

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: 19961026

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

RIC1 Information provided on ipc code assigned before grant

Free format text: 7F 24F 7/007 A, 7E 21F 1/00 B, 7F 04D 29/54 B

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 20021031

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Owner name: MATSUSHITA ECOLOGY SYSTEMS CO., LTD.

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): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69631459

Country of ref document: DE

Date of ref document: 20040311

Kind code of ref document: P

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: 20041105

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

Ref country code: DE

Payment date: 20061019

Year of fee payment: 11

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

Ref country code: GB

Payment date: 20061025

Year of fee payment: 11

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20071026

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

Ref country code: DE

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

Effective date: 20080501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20080630

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

Ref country code: FR

Payment date: 20061010

Year of fee payment: 11

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 NON-PAYMENT OF DUE FEES

Effective date: 20071026

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: 20071031