GB201803859D0 - A vacuum pump with a pressure relief valve - Google Patents

A vacuum pump with a pressure relief valve

Info

Publication number
GB201803859D0
GB201803859D0 GBGB1803859.6A GB201803859A GB201803859D0 GB 201803859 D0 GB201803859 D0 GB 201803859D0 GB 201803859 A GB201803859 A GB 201803859A GB 201803859 D0 GB201803859 D0 GB 201803859D0
Authority
GB
United Kingdom
Prior art keywords
vacuum pump
relief valve
pressure relief
valve
pressure
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
GBGB1803859.6A
Other versions
GB2571792B (en
GB2571792A (en
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.)
Edwards Ltd
Original Assignee
Edwards 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 Edwards Ltd filed Critical Edwards Ltd
Priority to GB1803859.6A priority Critical patent/GB2571792B/en
Publication of GB201803859D0 publication Critical patent/GB201803859D0/en
Priority to CN201980018247.7A priority patent/CN111801498B/en
Priority to TW108107829A priority patent/TW201940815A/en
Priority to EP19711684.1A priority patent/EP3762611B8/en
Priority to PCT/GB2019/050650 priority patent/WO2019171074A1/en
Priority to TW108107831A priority patent/TW201938916A/en
Priority to PCT/GB2019/050652 priority patent/WO2019171076A1/en
Priority to PCT/GB2019/050651 priority patent/WO2019171075A1/en
Priority to TW108107830A priority patent/TW201938915A/en
Publication of GB2571792A publication Critical patent/GB2571792A/en
Application granted granted Critical
Publication of GB2571792B publication Critical patent/GB2571792B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/18—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/21—Pressure difference

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Safety Valves (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
GB1803859.6A 2018-03-09 2018-03-09 A vacuum pump with a pressure relief valve Active GB2571792B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB1803859.6A GB2571792B (en) 2018-03-09 2018-03-09 A vacuum pump with a pressure relief valve
PCT/GB2019/050652 WO2019171076A1 (en) 2018-03-09 2019-03-08 Vacuum pump and vacuum pump rotor
TW108107829A TW201940815A (en) 2018-03-09 2019-03-08 A vacuum pump with a pressure relief valve
EP19711684.1A EP3762611B8 (en) 2018-03-09 2019-03-08 A vacuum pump with a pressure relief valve
PCT/GB2019/050650 WO2019171074A1 (en) 2018-03-09 2019-03-08 A vacuum pump with a pressure relief valve
TW108107831A TW201938916A (en) 2018-03-09 2019-03-08 Vacuum pump and vacuum pump rotor
CN201980018247.7A CN111801498B (en) 2018-03-09 2019-03-08 Vacuum pump with pressure relief valve
PCT/GB2019/050651 WO2019171075A1 (en) 2018-03-09 2019-03-08 Vacuum pump and vacuum pump rotor
TW108107830A TW201938915A (en) 2018-03-09 2019-03-08 Vacuum pump and vacuum pump rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1803859.6A GB2571792B (en) 2018-03-09 2018-03-09 A vacuum pump with a pressure relief valve

Publications (3)

Publication Number Publication Date
GB201803859D0 true GB201803859D0 (en) 2018-04-25
GB2571792A GB2571792A (en) 2019-09-11
GB2571792B GB2571792B (en) 2020-12-16

Family

ID=61973005

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1803859.6A Active GB2571792B (en) 2018-03-09 2018-03-09 A vacuum pump with a pressure relief valve

Country Status (5)

Country Link
EP (1) EP3762611B8 (en)
CN (1) CN111801498B (en)
GB (1) GB2571792B (en)
TW (3) TW201938915A (en)
WO (3) WO2019171074A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB772999A (en) * 1954-09-24 1957-04-17 Heraeus Gmbh W C Improvements in or relating to roots-type mechanical high-vacuum pumps
BE790061A (en) * 1971-10-14 1973-02-01 Ransburg Corp ROTARY VOLUMETRIC PUMP
SU987182A1 (en) * 1981-07-13 1983-01-07 Омский политехнический институт Screw compressor
US8272846B2 (en) * 2006-12-05 2012-09-25 Carrier Corporation Integral slide valve relief valve
DE102008034073A1 (en) * 2008-07-22 2010-01-28 Oerlikon Leybold Vacuum Gmbh Vacuum pump i.e. roots pump, has valve opened during exceeding of maximum pressure difference between pressure side and suction side of suction chamber, and valve unit designed as pivotable valve flap
DE102008060540A1 (en) * 2008-12-04 2010-06-10 Pfeiffer Vacuum Gmbh Roots
BRPI1105143B1 (en) * 2011-12-15 2021-07-27 Embraco Indústria De Compressores E Soluções Em Refrigeração Ltda SUCTION VALVE ASSEMBLY FOR ALTERNATIVE COMPRESSOR
CN206439185U (en) * 2017-01-23 2017-08-25 北京市四方特种油品厂 Lobe pump

Also Published As

Publication number Publication date
GB2571792B (en) 2020-12-16
EP3762611A1 (en) 2021-01-13
TW201938915A (en) 2019-10-01
WO2019171075A1 (en) 2019-09-12
CN111801498A (en) 2020-10-20
WO2019171076A1 (en) 2019-09-12
EP3762611B8 (en) 2023-10-11
TW201938916A (en) 2019-10-01
CN111801498B (en) 2023-03-10
WO2019171074A1 (en) 2019-09-12
EP3762611B1 (en) 2023-08-30
TW201940815A (en) 2019-10-16
GB2571792A (en) 2019-09-11

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