EP3453875A1 - Pneumatik - Google Patents

Pneumatik Download PDF

Info

Publication number
EP3453875A1
EP3453875A1 EP17196223.6A EP17196223A EP3453875A1 EP 3453875 A1 EP3453875 A1 EP 3453875A1 EP 17196223 A EP17196223 A EP 17196223A EP 3453875 A1 EP3453875 A1 EP 3453875A1
Authority
EP
European Patent Office
Prior art keywords
outlet port
pneumatic device
internal
compressed gas
external
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.)
Withdrawn
Application number
EP17196223.6A
Other languages
English (en)
French (fr)
Inventor
Mark Edwards
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.)
Hayley Group Ltd
Original Assignee
Hayley Group 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 Hayley Group Ltd filed Critical Hayley Group Ltd
Publication of EP3453875A1 publication Critical patent/EP3453875A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/06—Venting
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0081—Special features systems, control, safety measures
    • 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
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F04B45/053—Pumps having fluid drive

Definitions

  • Embodiments of the present invention relate to pneumatics.
  • they relate to a pneumatic device that enables compressed gas which is exhausted by a diaphragm pump to be captured and reused.
  • a diaphragm pump is a positive displacement pump that uses a diaphragm to pump a fluid.
  • a gas/air operated diaphragm pump is powered by compressed gas (such as compressed air). When compressed gas is provided to a diaphragm pump in order to power it, compressed gas is exhausted to atmosphere via an exhaust.
  • a pneumatic device comprising: an inlet port for receiving compressed gas from an exhaust of a diaphragm pump; an external outlet port for outputting compressing gas to a further pneumatic device; an internal chamber defined by an internal housing arranged to funnel received compressed gas towards an internal outlet port of the internal chamber, the internal outlet port being located adjacent to, and spaced from, the external outlet port; and one or more exhausts positioned to exhaust compressed gas, from the pneumatic device, that is output from the internal outlet port without being output from the external outlet port.
  • the one or more exhausts may be positioned to exhaust compressed gas that is output from the internal outlet port and flows away from the external outlet port, within the pneumatic device, without reaching the external outlet port.
  • the internal housing may comprise a tapered portion that is arranged to funnel received compressed gas towards the inlet port.
  • the cross-sectional area of the internal chamber may reduce as the tapered portion extends towards the internal outlet port.
  • the inlet port may be for receiving compressed gas into the internal housing.
  • the pneumatic device may further comprise an external housing.
  • the internal housing may be positioned within the external housing.
  • the external outlet port may be for outputting compressed gas from the external housing.
  • the internal outlet port may be positioned within the external housing.
  • the pneumatic device may further comprise a passage arranged to direct compressed gas, output from the internal outlet port without being output from the external outlet port, to the one or more exhausts.
  • the passage may be at least partially curved.
  • the internal housing may be at least partially curved.
  • the pneumatic device may further comprise a Venturi conduit, positioned within the internal chamber, for increasing the velocity of the compressed gas received by the inlet port.
  • the pneumatic device may further comprise one or more impellers, positioned within the internal chamber, arranged to drive compressed gas output by the Venturi conduit towards the internal outlet port.
  • the one or more impellers may comprise a plurality of impellers of different diameters. The diameter of the impellers may decrease as the impellers approach the internal outlet port.
  • a pneumatic system may be provided which comprises the diaphragm pump and the pneumatic device pneumatically connected to the exhaust of the diaphragm pump.
  • the pneumatic system may further comprise: a pressure intensifying arrangement for increasing the pressure of compressed gas that has been output by external outlet port.
  • a pneumatic device comprising: a housing; an inlet port for receiving compressed gas, into the housing, from an exhaust of a diaphragm pump; an external outlet port for outputting compressing gas to a further pneumatic device; a Venturi conduit for increasing the velocity of the compressed gas received by the inlet port; one or more impellers arranged to drive compressed gas output by the Venturi conduit towards the external outlet port; and one or more exhausts arranged to exhaust compressed gas, from the housing, that is driven by the one or more impellers towards the external outlet port without being output from the external outlet port.
  • the one or more impellers may comprise a plurality of impellers of different diameters.
  • the diameter of the impellers may decrease as the impellers approach the external outlet port.
  • a pneumatic system may be provided which comprises the diaphragm pump and the pneumatic device pneumatically connected to the exhaust of the diaphragm pump.
  • the pneumatic system may further comprise: a pressure intensifying arrangement for increasing the pressure of compressed gas that has been output by external outlet port.
  • Embodiments of the invention relate to a pneumatic device 100/101 that enables compressed gas/air to be retrieved from an exhaust of a diaphragm pump and subsequently reused. This may advantageously reduce the amount of compressed air/gas that is required by a facility to operate its diaphragm pumps (or other pneumatic devices), thereby reducing cost.
  • compressed gas is intended to encompass compressed air and also other suitable compressed gases.
  • pneumatically connected means that compressed gas is able to flow from one port/position to the other port/position.
  • Fig. 1 illustrates a cross section of a first embodiment 100 of a pneumatic device.
  • the pneumatic device 100 comprises an outer housing 18, an inlet port 2, an outlet port 4 and one or more exhausts 12, 14.
  • the inlet port 2 is for receiving compressed gas, from an exhaust of a diaphragm pump, into the external housing 18.
  • the outlet port 4 is for outputting compressed gas from the external housing 18 to a further pneumatic device.
  • the inlet port 2 and the outlet port 4 are both "external" ports since they are externally accessible to a user. In the illustrated example, they extend outwardly from the outer housing 18 of the pneumatic device 100.
  • the outer housing 18 is substantially cylindrical in shape, but that need not be the case in other examples.
  • the pneumatic device 100 further comprises an internal chamber 6 defined by an internal housing 8 arranged to funnel compressed gas, received at the inlet port 2, towards an internal outlet port 10 of the internal chamber 6.
  • the inlet port 2 comprises a internal conduit 7 that extends into the external housing 18 and connects to the internal housing 8.
  • the internal outlet port 10 is positioned within the external housing 18 and is located adjacent to, and spaced from, the external outlet port 4. In this example, the internal outlet port 10 is separated from the external outlet port 4 by a void.
  • the internal housing 8 is formed by a wall having a plurality of differently shaped portions 8a, 8b, 8c.
  • a first portion 8a of the internal housing 8 connects to the internal conduit 7 and is tapered such that the internal housing 8 increases in size in the direction of the flow of compressed gas (i.e. from the inlet port 2 to the internal outlet port 10).
  • the cross-sectional area of the internal chamber 6 within the internal housing 8 increases as the tapered first portion 8a extends away from the inlet port 2.
  • a second portion 8b of the internal housing 8 is substantially cylindrical in the illustrated example, but this need not be the case in every example.
  • the second portion 8c connects the first portion 8a to a third portion 8c, which is shaped to funnel compressed gas towards the internal outlet port 10.
  • the third portion 8c of internal housing 8 is tapered such that the internal housing 8 decreases in size in the direction of the flow of compressed gas, thereby creating the funneling effect. Put differently, the cross-sectional area of the internal chamber 6 within the internal housing 8 reduces as the tapered third portion 8c extends towards the internal outlet port 10.
  • the tapered third portion 8c of the internal housing 8 is conical, but in other embodiments it might be curved in shape.
  • the tapered third portion 8c might be symmetrical with the tapered first portion 8a.
  • the diaphragm pump When the inlet port 2 is pneumatically connected to the exhaust of a diaphragm pump, the diaphragm pump will continuously push compressed air into the internal chamber 6, and the only outlet for that compressed gas is the internal outlet port 10.
  • the rest of the compressed gas that is output by the internal outlet port 10 fails to reach the external outlet port 4 and enters a peripheral chamber 16 that is positioned outside the internal housing 6 and within the external housing 18.
  • the peripheral chamber 16 provides a passage that is arranged to direct compressed gas that is output from the internal outlet port 10, without being output from the external outlet port 4, to the exhausts 12, 14.
  • the exhausts 12, 14 are positioned to exhaust that compressed gas.
  • the passage is at least partially curved (e.g. due to a curvature of the external housing 18 and/or a curvature of the internal housing 8).
  • the pneumatic device 100 therefore advantageously enables compressed gas (which would otherwise be exhausted to atmosphere by a diaphragm pump) to be retrieved from the exhaust of a diaphragm pump and potentially reused.
  • Fig. 2 illustrates a second embodiment 101 of the pneumatic device.
  • the pneumatic device 101 illustrated in fig. 2 is similar to that illustrated in fig. 1 in that it comprises an inlet port 2, an external outlet port 4, an internal chamber 6 defined by an internal housing 8 and one or more exhausts 12, 14.
  • a peripheral chamber 16 is positioned between an external housing 18 and the internal housing 8.
  • the third portion 8c of the internal housing 8 in fig. 2 differs from that in fig. 1 in that it is curved rather than conical, although it was explained above that the third portion 8c of the internal housing 8 of the first embodiment 100 of the pneumatic device might instead be curved.
  • the third portion 8c of the internal housing 8 in fig. 2 could be conical instead.
  • the difference between the second embodiment 101 of the pneumatic device illustrated in fig. 2 and the first embodiment 100 illustrated in fig. 1 is the presence of a Venturi conduit 9 and an impeller arrangement 11 in the second embodiment 101.
  • the Venturi conduit/tube 9 is positioned within the internal chamber 6 in the illustrated example and is for increasing the velocity of compressed gas received by the inlet port 2.
  • the Venturi conduit 9 includes a first, wider, portion 9a which is followed by a second, narrower, portion 9b in the direction of the gas flow (from the inlet port 2 to the outlet ports 4, 10).
  • the second, narrower, portion 9b of the Venturi conduit 9 is followed by a third portion 9c that acts as an outlet and is wider than the second portion 9b.
  • the impeller arrangement 11 is positioned at the outlet of the Venturi conduit 9 and includes impellers 11a, 11b, 11c, 11d, 11e of different diameters.
  • Each of the impellers 11a-11e is fixed to a rotatable shaft 13.
  • the diameter of the impellers 11a-11e decreases as the impellers 11a-11e approach the internal outlet port 10. That is, the largest impeller 11a is positioned closest to the Venturi conduit 9 and the smallest impeller 11d is positioned closest to the internal outlet port 10.
  • This configuration of impellers 11a-11e is designed to urge and guide compressed air through the internal outlet port 10.
  • the Venturi conduit 9 increases the velocity of compressed gas that enters it, and the impeller arrangement 11 then drives compressed gas exiting the Venturi conduit 9 towards the internal outlet port 10.
  • the second embodiment 101 of the pneumatic device is similar to the first embodiment 100 in that some of the compressed gas which is output from the internal outlet port 10 flows directly to the external outlet port 4 and is subsequently output from the external outlet port 4, exiting the pneumatic device 100.
  • the rest of the compressed gas that is output by the internal outlet port 10 fails to reach the external outlet port 4 and enters the peripheral chamber 16 that is positioned outside the internal housing 6 and within the external housing 18.
  • the exhausts 12, 14 exhaust the compressed gas that enters the peripheral chamber 16.
  • the presence of an exhaust path for the compressed gas that is output by the internal outlet port 10 but does not reach the external outlet port 4 means that a "back pressure" does not develop when the pneumatic device 101 is employed. This allows compressed gas exiting the exhaust of a diaphragm pump to be retrieved and recaptured without adversely affecting the performance of the diaphragm pump.
  • Fig. 3 illustrates a pneumatic system 200 comprising a compressed gas source 20, a diaphragm pump 30 which is operated by compressed gas, the pneumatic device 100/101 described above in relation to fig. 1 or fig. 2 , a swing check valve 40 and a pressure intensifying arrangement 103.
  • the pressure intensifying arrangement 103 includes first and second repositories 50, 150 for storing a reservoir of compressed gas, a plurality of one-way valves 60, 130, 140, a pressure relief valve 70, a control valve 80, a plurality of pressure decay sensors 90a, 90b, a first pneumatic cylinder 110 and a second pneumatic cylinder 120.
  • compressed gas is supplied to the diaphragm pump 30 in order to operate it.
  • compressed gas is output to the pneumatic device 100/101 which, in this example, is directly connected to the exhaust of the diaphragm pump 30.
  • directly connected means there are no intervening pneumatic devices between the exhaust of the diaphragm pump and the pneumatic device 100/101.
  • the compressed gas passes through the pneumatic device 100/101 in the manner described above in relation to fig. 1 or fig. 2 .
  • the swing check valve 40 that is connected to the external outlet 4 of the pneumatic device 100/100 allows compressed air to be output by the pneumatic device 100/101 to the pressure intensifying arrangement 103 without generating a "back pressure" which would affect the performance of the diaphragm pump 30.
  • the pressure of compressed gas that is output by the external outlet port 4 of the pneumatic device 100/101 is typically lower than that which is input into the diaphragm pump 30. It may be desirable to increase the pressure of the compressed gas that has been retrieved from the exhaust of the diaphragm pump 30, for example, to a level which matches (or is similar to) the pressure of the compressed gas that is input into the diaphragm pump 30. This may, for example, enable the retrieved compressed gas to be reused to operate the diaphragm pump 30 or other pneumatic devices.
  • the purpose of the pressure intensifying arrangement 103 is to increase the pressure to a suitable level for the recaptured compressed air to be reused. It will be appreciated by those skilled in the art that other pressure intensifying arrangements could be used other than the one shown in fig. 3 . In some implementations of the invention, it might not be necessary to increase the pressure of the recaptured compressed air prior to its reuse.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP17196223.6A 2017-09-08 2017-10-12 Pneumatik Withdrawn EP3453875A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201714512A GB2563098B (en) 2017-09-08 2017-09-08 Pneumatic device for connection to exhaust of pneumatically operated diaphragm pump

Publications (1)

Publication Number Publication Date
EP3453875A1 true EP3453875A1 (de) 2019-03-13

Family

ID=60083822

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17196223.6A Withdrawn EP3453875A1 (de) 2017-09-08 2017-10-12 Pneumatik

Country Status (2)

Country Link
EP (1) EP3453875A1 (de)
GB (1) GB2563098B (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1557033A1 (de) * 1966-05-05 1970-07-16 Bertin & Cie Verfahren und Vorrichtung zum Mischen von Gasen
US5468127A (en) * 1995-01-31 1995-11-21 Checkpoint Fluidic Systems International Ltd. Pilot control valve having means for recovering exhaust fluids
US6190543B1 (en) * 1996-06-05 2001-02-20 Kvaerner Process Systems A.S. Cyclonic separator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2891633B1 (fr) * 2005-10-05 2009-04-10 Francel Sa Dispositif formant detendeur de gaz

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1557033A1 (de) * 1966-05-05 1970-07-16 Bertin & Cie Verfahren und Vorrichtung zum Mischen von Gasen
US5468127A (en) * 1995-01-31 1995-11-21 Checkpoint Fluidic Systems International Ltd. Pilot control valve having means for recovering exhaust fluids
US6190543B1 (en) * 1996-06-05 2001-02-20 Kvaerner Process Systems A.S. Cyclonic separator

Also Published As

Publication number Publication date
GB2563098A (en) 2018-12-05
GB2563098B (en) 2019-12-25
GB201714512D0 (en) 2017-10-25

Similar Documents

Publication Publication Date Title
JP4857766B2 (ja) 遠心圧縮機およびそれに用いるドライガスシールシステム
KR20120112736A (ko) 펌프
US8596954B2 (en) Method and system for reducing seal gas consumption and settle-out pressure reduction in high-pressure compression systems
US6123516A (en) Vacuum pump
TWI696760B (zh) 用於產生真空的泵送系統及利用此泵送系統的泵送方法
JP2017507281A (ja) サイドストリームを伴うバックトゥバック型圧縮機を動作させるための方法及びシステム
JP2005307978A (ja) 多段式真空ポンプおよびその種のポンプを備えたポンプ設備
EP3453875A1 (de) Pneumatik
TW201608135A (zh) 真空幫浦系統中的抽泵方法及真空幫浦系統
US11473573B2 (en) System and method for evacuating a process space
US3942906A (en) Side channel ring compressor
CN105041514A (zh) 用于主动吹扫系统模块的被动旁路阀
KR102429697B1 (ko) 터보 블로워 장치
KR102190221B1 (ko) 진공 펌프 시스템 및 진공 펌프 시스템에서의 펌핑 방법
CN201090442Y (zh) 一种鼓风或引风装置
TW201608134A (zh) 泵送系統中的泵送方法及真空泵的系統
KR102500403B1 (ko) 터보 압축기
KR102083925B1 (ko) 압축 장치
CN201277202Y (zh) 一种鼓风或引风装置
CN210101611U (zh) 一种真空泵抽气系统
KR102429698B1 (ko) 터보 블로워 장치
KR20100131917A (ko) 역방향 펌핑식 종렬 공정 시일 장치
CN207393438U (zh) 一种真空泵n+1系统装置
RU176213U1 (ru) Двухступенчатый центробежный вентилятор
CU20220014A7 (es) Máquina térmica configurada para realizar un ciclo térmico funcionando la máquina térmica con un fluido térmico y método para realizar un ciclo térmico

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

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

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190912

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200630

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: F04B 9/12 20060101AFI20210416BHEP

Ipc: F04B 45/053 20060101ALI20210416BHEP

INTG Intention to grant announced

Effective date: 20210504

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20210915