EP1589223A4 - Soupape de commande destinee a un compresseur a cylindree variable - Google Patents

Soupape de commande destinee a un compresseur a cylindree variable

Info

Publication number
EP1589223A4
EP1589223A4 EP04703930A EP04703930A EP1589223A4 EP 1589223 A4 EP1589223 A4 EP 1589223A4 EP 04703930 A EP04703930 A EP 04703930A EP 04703930 A EP04703930 A EP 04703930A EP 1589223 A4 EP1589223 A4 EP 1589223A4
Authority
EP
European Patent Office
Prior art keywords
control valve
variable displacement
displacement compressor
compressor
variable
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
EP04703930A
Other languages
German (de)
English (en)
Other versions
EP1589223B1 (fr
EP1589223A1 (fr
Inventor
Yuji Kawamura
Kazutaka Kowada
Kazuhiro Irie
Shunji Muta
Yoshie Sato
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.)
TGK Co Ltd
Valeo Japan Co Ltd
Original Assignee
Valeo Thermal Systems Japan Corp
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 Valeo Thermal Systems Japan Corp filed Critical Valeo Thermal Systems Japan Corp
Publication of EP1589223A1 publication Critical patent/EP1589223A1/fr
Publication of EP1589223A4 publication Critical patent/EP1589223A4/fr
Application granted granted Critical
Publication of EP1589223B1 publication Critical patent/EP1589223B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/1809—Controlled pressure
    • F04B2027/1813—Crankcase pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/1822—Valve-controlled fluid connection
    • F04B2027/1827—Valve-controlled fluid connection between crankcase and discharge chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/1822—Valve-controlled fluid connection
    • F04B2027/1831—Valve-controlled fluid connection between crankcase and suction chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/184—Valve controlling parameter
    • F04B2027/1854—External parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804—Controlled by crankcase pressure
    • F04B2027/184—Valve controlling parameter
    • F04B2027/1859—Suction pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP04703930.0A 2003-01-22 2004-01-21 Soupape de commande destinee a un compresseur a cylindree variable Expired - Lifetime EP1589223B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2003013890 2003-01-22
JP2003013890 2003-01-22
PCT/JP2004/000505 WO2004065789A1 (fr) 2003-01-22 2004-01-21 Soupape de commande destinee a un compresseur a cylindree variable

Publications (3)

Publication Number Publication Date
EP1589223A1 EP1589223A1 (fr) 2005-10-26
EP1589223A4 true EP1589223A4 (fr) 2011-03-16
EP1589223B1 EP1589223B1 (fr) 2019-04-24

Family

ID=32767372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04703930.0A Expired - Lifetime EP1589223B1 (fr) 2003-01-22 2004-01-21 Soupape de commande destinee a un compresseur a cylindree variable

Country Status (6)

Country Link
US (1) US20050254961A1 (fr)
EP (1) EP1589223B1 (fr)
JP (1) JP4547332B2 (fr)
KR (1) KR100984214B1 (fr)
CN (1) CN100396916C (fr)
WO (1) WO2004065789A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4456906B2 (ja) * 2004-03-25 2010-04-28 株式会社不二工機 可変容量型圧縮機用の制御弁
JP2006083837A (ja) * 2004-08-19 2006-03-30 Tgk Co Ltd 可変容量圧縮機用制御弁
JP4925800B2 (ja) 2006-11-30 2012-05-09 カルソニックカンセイ株式会社 可変容量コンプレッサの制御弁
US8424567B2 (en) * 2009-12-18 2013-04-23 Cameron International Corporation Bi-directional valve with cavity pressure relief
JP5458965B2 (ja) * 2010-03-08 2014-04-02 株式会社豊田自動織機 可変容量型圧縮機における容量制御機構
CN101985926B (zh) * 2010-10-22 2013-01-09 四川金科环保科技有限公司 液压活塞式压缩机排气量无级调节方法
JP2013144957A (ja) * 2012-01-16 2013-07-25 Japan Climate Systems Corp 可変容量圧縮機
JP6149206B2 (ja) 2013-07-04 2017-06-21 株式会社テージーケー 可変容量圧縮機用制御弁
US10066618B2 (en) * 2014-11-05 2018-09-04 Mahle International Gmbh Variable displacement compressor with an oil check valve
JP6500186B2 (ja) * 2016-02-25 2019-04-17 株式会社テージーケー 可変容量圧縮機用制御弁
JP6500185B2 (ja) * 2016-02-25 2019-04-17 株式会社テージーケー 可変容量圧縮機用制御弁
US10690125B2 (en) * 2016-03-17 2020-06-23 Eagle Industry Co., Ltd. Displacement control valve
JP6714274B2 (ja) * 2016-06-13 2020-06-24 株式会社テージーケー 可変容量圧縮機用制御弁
CN108071824B (zh) 2016-06-13 2021-08-10 株式会社Tgk 可变容量压缩机用控制阀
WO2018180784A1 (fr) * 2017-03-28 2018-10-04 イーグル工業株式会社 Soupape de commande de capacité
KR102051661B1 (ko) * 2017-05-30 2019-12-04 한온시스템 주식회사 컨트롤 밸브 및 가변 용량식 압축기
JP6910871B2 (ja) * 2017-07-14 2021-07-28 サンデン・オートモーティブコンポーネント株式会社 可変容量圧縮機
JP7068320B2 (ja) 2017-08-28 2022-05-16 イーグル工業株式会社 電磁弁
KR20190092234A (ko) * 2018-01-29 2019-08-07 한온시스템 주식회사 압축기의 제어장치, 그에 사용되는 전자식 제어밸브 및 그를 포함한 전동 압축기
US11473683B2 (en) * 2018-08-08 2022-10-18 Eagle Industry Co., Ltd. Capacity control valve
CN110469497A (zh) * 2019-08-14 2019-11-19 珠海格力节能环保制冷技术研究中心有限公司 压缩机及具有其的制冷设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4428718A (en) * 1982-02-25 1984-01-31 General Motors Corporation Variable displacement compressor control valve arrangement
EP0220798A1 (fr) * 1985-08-09 1987-05-06 Sanden Corporation Compresseur à plateau inclinable avec dispositif de variation volumétrique
US5000666A (en) * 1988-01-14 1991-03-19 Honda Giken Kogyo Kabushiki Kaisha Control device for variable displacement type compressor
US5702235A (en) * 1995-10-31 1997-12-30 Tgk Company, Ltd. Capacity control device for valiable-capacity compressor

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4606705A (en) * 1985-08-02 1986-08-19 General Motors Corporation Variable displacement compressor control valve arrangement
JPH0765567B2 (ja) * 1986-04-09 1995-07-19 株式会社豊田自動織機製作所 揺動斜板型圧縮機におけるクランク室圧力の制御機構
JPS63243469A (ja) * 1987-03-28 1988-10-11 Toyota Autom Loom Works Ltd 揺動斜板型圧縮機におけるクランク室圧力の制御機構
JPS6441680A (en) * 1987-08-06 1989-02-13 Honda Motor Co Ltd Controller for variable displacement compressor
JP3242496B2 (ja) * 1993-07-06 2001-12-25 株式会社豊田自動織機 可変容量圧縮機の外部切換式容量制御弁
JP3432995B2 (ja) * 1996-04-01 2003-08-04 株式会社豊田自動織機 可変容量型圧縮機用制御弁
US6010312A (en) * 1996-07-31 2000-01-04 Kabushiki Kaisha Toyoda Jidoshokki Seiksakusho Control valve unit with independently operable valve mechanisms for variable displacement compressor
JP3591234B2 (ja) * 1997-08-27 2004-11-17 株式会社豊田自動織機 可変容量型圧縮機用制御弁
JP3783434B2 (ja) * 1998-04-13 2006-06-07 株式会社豊田自動織機 容量可変型斜板式圧縮機、及び空調用冷房回路
US6302656B1 (en) * 1998-10-08 2001-10-16 Tgk Co. Ltd. Solenoid controlled valve and variable displacement compressor
JP3899719B2 (ja) * 1999-01-29 2007-03-28 株式会社豊田自動織機 容量可変型圧縮機の制御弁
JP3583951B2 (ja) * 1999-06-07 2004-11-04 株式会社豊田自動織機 容量制御弁
JP2001073939A (ja) * 1999-08-31 2001-03-21 Toyota Autom Loom Works Ltd 容量可変型圧縮機の制御弁及び容量可変型圧縮機
JP2001132632A (ja) * 1999-11-10 2001-05-18 Toyota Autom Loom Works Ltd 容量可変型圧縮機の制御弁
US6340293B1 (en) * 2000-08-25 2002-01-22 Delphi Technologies Inc Clutchless compressor control valve with integral by pass feature
DE10318626A1 (de) * 2002-04-25 2003-11-13 Sanden Corp Kompressor variabler Kapazität

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4428718A (en) * 1982-02-25 1984-01-31 General Motors Corporation Variable displacement compressor control valve arrangement
EP0220798A1 (fr) * 1985-08-09 1987-05-06 Sanden Corporation Compresseur à plateau inclinable avec dispositif de variation volumétrique
US5000666A (en) * 1988-01-14 1991-03-19 Honda Giken Kogyo Kabushiki Kaisha Control device for variable displacement type compressor
US5702235A (en) * 1995-10-31 1997-12-30 Tgk Company, Ltd. Capacity control device for valiable-capacity compressor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2004065789A1 *

Also Published As

Publication number Publication date
EP1589223B1 (fr) 2019-04-24
JP4547332B2 (ja) 2010-09-22
EP1589223A1 (fr) 2005-10-26
KR100984214B1 (ko) 2010-09-28
US20050254961A1 (en) 2005-11-17
WO2004065789A1 (fr) 2004-08-05
CN100396916C (zh) 2008-06-25
KR20050094868A (ko) 2005-09-28
JPWO2004065789A1 (ja) 2006-05-18
CN1738971A (zh) 2006-02-22

Similar Documents

Publication Publication Date Title
EP1589223A4 (fr) Soupape de commande destinee a un compresseur a cylindree variable
AU2003211853A1 (en) Flow control valve
EP1553473A4 (fr) Vanne de commande de fluide
AU2003289579A1 (en) Slide spool-type valve
EP1498605A4 (fr) Compresseur a cylindree variable
EP2042732A4 (fr) Valve de commande de capacite de compresseur a capacite variable
GB2396669B (en) Controls for variable displacement compressor
AU2003207057A1 (en) Flow control valve
EP1659319A4 (fr) Valve de distribution
EP1509715A4 (fr) Vanne regulatrice de gaz
DE60302981D1 (de) Regelventil für Verdichter mit veränderlicher Verdrängung
DE60203845D1 (de) Regelventil für einen Verdichter variabler Verdrängung
DE60324237D1 (de) Regelventil für einen Verdichter variabler Verdrängung
DE60124991D1 (de) Kontrollventil für variablen Verdrängungskompressor
DE602004007451D1 (de) Druckregelventil
EP1710402A4 (fr) Mecanisme de distributeur variable
DE602004006564D1 (de) Druckregelventil
EP1236898A3 (fr) Soupape de contrôle pour compresseur à capacité variable
DE60222822D1 (de) Regelventil für einen Verdichter variabler Verdrängung
EP2000720A4 (fr) Vanne de régulation pour compresseur à cylindrée variable utilisant cette vanne de régulation
DE60301775D1 (de) Regelventil für einen Verdichter variabler Verdrängung
EP1662150A4 (fr) Bloc de vannes de distribution
GB2398857B (en) Hydraulic control valve assembly
AU2003294624A1 (en) Directly controlled pressure control valve
DE502004012471D1 (de) Gasregelarmatur

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: 20050712

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SATO, YOSHIE,C/O VALEO THERMAL SYSTEMS JAPAN CORP.

Inventor name: MUTA, SHUNJI,C/O VALEO THERMAL SYSTEMS JAPAN CORP.

Inventor name: IRIE, KAZUHIRO,VALEO THERMAL SYSTEMS JAPAN CORP.

Inventor name: KOWADA, KAZUTAKA,VALEO THERMAL SYSTEMS JAPAN CORP.

Inventor name: KAWAMURA, YUJI,VALEO THERMAL SYSTEMS JAPAN CORP.

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

Owner name: VALEO THERMAL SYSTEMS JAPAN CORPORATION

A4 Supplementary search report drawn up and despatched

Effective date: 20110215

RIC1 Information provided on ipc code assigned before grant

Ipc: F04B 27/08 20060101AFI20040929BHEP

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

Owner name: TGK CO., LTD.

Owner name: VALEO JAPAN CO., LTD.

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

Owner name: VALEO JAPAN CO., LTD.

Owner name: TGK CO., LTD.

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602004053912

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: F04B0027080000

Ipc: F04B0027180000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: F04B 27/18 20060101AFI20181212BHEP

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190117

RIN1 Information on inventor provided before grant (corrected)

Inventor name: IRIE, KAZUHIRO,

Inventor name: SATO, YOSHIE,

Inventor name: KOWADA, KAZUTAKA,

Inventor name: KAWAMURA, YUJI,

Inventor name: MUTA, SHUNJI,

RIN1 Information on inventor provided before grant (corrected)

Inventor name: IRIE, KAZUHIRO,

Inventor name: KAWAMURA, YUJI,

Inventor name: KOWADA, KAZUTAKA,

Inventor name: MUTA, SHUNJI,

Inventor name: SATO, YOSHIE,

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602004053912

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602004053912

Country of ref document: DE

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: 20200127

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

Ref country code: DE

Payment date: 20200107

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602004053912

Country of ref document: DE

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: 20210803

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

Ref country code: FR

Payment date: 20230125

Year of fee payment: 20

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230629