WO2019043470A1 - Machine équipée d'une pompe à huile et procédé de démarrage d'une telle machine - Google Patents

Machine équipée d'une pompe à huile et procédé de démarrage d'une telle machine Download PDF

Info

Publication number
WO2019043470A1
WO2019043470A1 PCT/IB2018/055280 IB2018055280W WO2019043470A1 WO 2019043470 A1 WO2019043470 A1 WO 2019043470A1 IB 2018055280 W IB2018055280 W IB 2018055280W WO 2019043470 A1 WO2019043470 A1 WO 2019043470A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
oil pump
machine
pump
dam
Prior art date
Application number
PCT/IB2018/055280
Other languages
English (en)
Inventor
Wim MEEUSEN
Edwin ROSKAM
Original Assignee
Atlas Copco Airpower, Naamloze Vennootschap
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
Priority claimed from BE2018/5151A external-priority patent/BE1025520B1/nl
Priority to UAA202000688A priority Critical patent/UA126809C2/uk
Priority to EP18749566.8A priority patent/EP3676482B1/fr
Priority to PL18749566.8T priority patent/PL3676482T3/pl
Priority to JP2020508016A priority patent/JP7185683B2/ja
Priority to US16/628,889 priority patent/US11506093B2/en
Application filed by Atlas Copco Airpower, Naamloze Vennootschap filed Critical Atlas Copco Airpower, Naamloze Vennootschap
Priority to BR112020003936-5A priority patent/BR112020003936A2/pt
Priority to KR1020207009040A priority patent/KR102541222B1/ko
Priority to RU2020112399A priority patent/RU2761330C2/ru
Priority to CN201880052098.1A priority patent/CN111033004B/zh
Priority to MX2020002121A priority patent/MX2020002121A/es
Priority to ES18749566T priority patent/ES2933182T3/es
Priority to FIEP18749566.8T priority patent/FI3676482T3/fi
Publication of WO2019043470A1 publication Critical patent/WO2019043470A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0238—Rotary pumps
    • 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
    • F04C2210/00—Fluid
    • F04C2210/20—Fluid liquid, i.e. incompressible
    • F04C2210/206—Oil
    • 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
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet
    • F04C2250/101—Geometry of the inlet or outlet of the inlet
    • 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
    • F04C2270/42—Conditions at the inlet of a pump or machine

Definitions

  • Machine provided with an oil pump and a method to start such a machine.
  • the present invention relates to a machine provided with an oil pump.
  • oil jet lubrication in which nozzles are used with a very precise bore which is directed to the exact location where the lubrication is needed.
  • the location concerned is the race track for ball bearings and the gear mesh engagement for gears.
  • the nozzles have to be provided with oil that has been filtered and cooled and is supplied at the right pressure.
  • an oil circuit is often provided in the machine, which typically comprises an oil reservoir, an oil pump, an oil cooler, an oil filter and interconnecting pipes which may or may not be integrated in other parts of the machine.
  • Minimum pressure valves , bypasses, oil pressure sensors and temperature sensors are also often provided.
  • Said oil pump plays a critical role: if insufficient oil is supplied in due time to the nozzles, poor lubrication might result in damage or failure of the bearings and/or gears.
  • Suitable oil pumps are gear pumps, internal gear pumps, such as gerotor pumps and rotary vane pumps.
  • the oil pump must first evacuate the air from the suction tube connecting it with the oil reservoir and subsequently must suck and pump the oil from the reservoir.
  • the purpose of the present invention is to provide a solution to at least one of the aforementioned and other disadvantages .
  • the object of the present invention is a machine which is provided with a machine element and an oil pump and a motor to drive the machine element and the oil pump, whereby the oil pump is provided with a shaft with a rotor, whereby the oil pump is provided to pump oil from an oil reservoir via an inlet channel to nozzles that lead into the motor and/or the machine element to lubricate and/or cool one or more bearings or other parts of the machine, characterized in that in the inlet channel, near the oil pump a dam is provided that is higher than the height of the central axis of the shaft of the oil pump minus the smallest diameter of the rotor of the oil pump divided by two.
  • An advantage is that this guarantees that, once the machine is stopped, a considerable amount of oil remains in the oil pump and in the inlet channel between the oil pump and the dam so that the complete internal cavity of the oil pump can be wetted with oil when the machine is (re) started and so that the suction power of the oil pump will immediately be very high.
  • the height of the dam is smaller than the height of the central axis of the shaft of the oil pump minus the diameter of the shaft of the oil pump divided by two.
  • the invention also concerns a method to start a machine according to the invention, characterized in that the method comprises the following steps:
  • oil, grease or suchlike with a higher molecular weight than the oil can be used, including for example paraffin oil, vaseline, vacuum grease and suchlike .
  • figure 1 schematically shows a machine according to the invention
  • figure 2 schematically shows the motor and oil pump in figure 1 in more detail
  • figure 3 shows a view according to the arrow F3 in figure 2, with partial cut-out of the housing of the pump;
  • figure 4 shows in more detail the part that is indicated in figure 3 with F4 ;
  • figure 5 shows an alternative embodiment of figure 4.
  • the machine 1 shown in figure 1 is in this case a compressor device 1. It is, however, not excluded that the machine 1 is a vacuum pump device or expander device.
  • the compressor device 1 comprises mainly a compressor element 2 for the compression of gas, a motor 3, an oil pump 4, an oil reservoir 5 and an oil circuit 6.
  • the motor 3 will directly drive both the compressor element 2 and the oil pump 4.
  • Figure 2 shows that the motor shaft 7 will be able to directly drive the oil pump 4.
  • the oil circuit 6 will allow the oil pump 4 to pump oil from the oil reservoir 5 via an inlet channel 8, after which the oil can be sent via the pipes 9 in the oil circuit 6 to nozzles that lead to specific locations in the motor 3 and/or the compressor element 2 for the lubrication and/or cooling of one or more bearings or other parts of the machine 1.
  • the oil pump 4 is driven by the motor 3 of the compressor element 2, it will be located at a considerably higher level than the oil reservoir 5. This means that the inlet channel 8, which runs from the oil reservoir 5 to the oil pump 4, is relatively long.
  • the oil pump 4 comprises a housing 10 in which a stator 11 and a rotor 12 are attached.
  • the rotor 12 is attached to a shaft 13, which is driven by the motor shaft 7.
  • the oil pump 4 is of the "gerotor" type, although this is not essential for the invention.
  • the housing 10 is provided with an inlet 14 for oil, to which an inlet channel 8 is connected, and with an outlet 15 for the pumped oil.
  • the inlet 14 and the outlet 15 are clearly visible .
  • a dam 16 is provided in the inlet channel 8, near the oil pump 4.
  • 'Dam 16' refers here to a structure that will ensure that, once the motor 3 is turned off, a certain amount of oil will remain in the cavity 17 that is closed off or isolated by the dam 16.
  • 'Near the oil pump 4' refers here to the fact that said remaining oil will remain at a location in such a way that the oil can immediately be pumped by the oil pump 4 when the oil pump 4 is started. This means for example that said remaining oil will at least be partly located in the oil pump 4 or that said remaining oil will be located right at the inlet 14 of the
  • FIG. 3 also shows clearly that the dam is higher than the height A of the central axis 18 of the shaft 13 of the oil pump 4 minus half of the smallest diameter B of the rotor
  • the dam 16 By making the dam 16 at least as high as this minimum height, indicated with the line C, enough oil will remain in the cavity 17 closed off or isolated by the dam in the inlet channel 8 between the dam 16 and the oil pump 4, whereby the internal cavity of the oil pump 4 can be immediately wetted upon starting. With this immediate wetting of the internal cavity with oil, the rotor 12 and the stator 11 will become immediately sealed by this oil so that the suction power of the oil pump 4 is immediately maximised.
  • the height D of the dam 16 is less than the height A of the central axis 18 of the shaft
  • the design of the dam 16 is in this case, and preferably, such that the volume of the oil that can be contained in the oil pump 4 and the inlet channel 8 between the oil pump 4 and the dam 16, is minimum two times the stroke volume of the oil pump .
  • the advantage of this is that there is immediately sufficient oil present in the oil pump 4 and the inlet channel 8 when starting the oil pump 4, so that not only the internal cavity can be immediately wetted, but also an amount of oil can immediately be pumped up or through the outlet 15 to the oil circuit 6 and continue to the parts of the machine 1 that require lubrication and/or cooling.
  • the dam 16 in figures 3 and 4 is designed as a slope inclining towards the rotor 12 and stator 11 of the oil pump 4, it is not excluded that the dam 16 is designed differently.
  • FIG 5 an alternative form is shown, whereby the dam 16 is in the form of steps, whereby a step 19 or stairs, as it were, are fitted in the inlet channel 8.
  • this embodiment has the advantage that more oil will remain in the cavity 17 between the dam 16 and the oil pump 4, it also has the disadvantage that oil can pour down as it were along the stairs 19 while being sucked up, which could cause unwanted turbulence. In the embodiment of figures 3 and 4, the oil will, as it were, flow or stream downwards from the dam 16.
  • the operation of the machine 1 is very simple and as follows.
  • the poured oil can flow to the oil pump 4 and fill both the oil pump 4 and the inlet channel 8 in the cavity 17 between the dam 16 and the oil pump 4 to the level D of the dam 16.
  • the compressor element 2 and the oil pump 4 will be driven and the poured oil, which is now located in the oil pump 4 and in the said cavity 17, will ensure that the oil pump 4 can immediately pump up oil and send it through to the oil circuit 6, so that the compressor element 2 is immediately provided with the necessary oil as from the moment the machine 1 is started.
  • a lubricant less volatile than oil is first poured in the internal cavity of the oil pump 4, before the motor 3 is started.
  • Such a method is preferably applied when the machine 1 is assembled, so that when the machine 1 is first started, the less volatile lubricant is present in the oil pump 4.
  • the oil pump 4 will immediately be able to pump oil from the oil reservoir 5 via the inlet channel 8.
  • the pumped oil will subsequently leave the oil pump 4 via the outlet 15 and end up in the oil circuit 6 where it is sent to the various nozzles in the various components to be lubricated and/or cooled in the compressor element 2 and/or the motor 3.
  • the compressor element 2 will therefore be provided with oil almost immediately as from the moment the motor 3 and the machine 1 are started, thus ensuring its effective operation .
  • the machine 1 comprises a sensor that can register whether oil is present in the cavity 17 between the oil pump 4 and the dam 16.
  • Said sensor can be any type of oil level sensor, but also an oil pressure sensor or oil temperature sensor according to the invention.
  • the motor 3 is preferably only started after oil has been detected in the inlet channel 8 between the oil pump 4 and the dam 16.
  • the machine 1 If no oil is detected, the machine 1 is not started, but instead for example a warning signal is given to the user.
  • the machine 1 comprises a connection between the oil reservoir 5 and the cavity 17 between the oil pump 4 and the dam 16, whereby the connection is provided in such a way to transfer oil from the oil reservoir 5 to the cavity 17 between the oil pump 4 and the dam 16.
  • machine 1 is also provided with a sensor that registers whether oil is present in the inlet channel 8 between the dam 16 and the oil pump .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

L'invention concerne une machine pourvue d'un élément de machine (2) et d'une pompe à huile (4) et d'un moteur (3) pour entraîner l'élément de machine (2) et la pompe à huile (4). La pompe à huile (4) est pourvue d'un arbre (13) avec un rotor (12) et est prévue pour pomper de l'huile à partir d'un réservoir d'huile (5) par l'intermédiaire d'un canal d'entrée (8) vers des buses qui conduisent dans le moteur (3) et/ou de l'élément de machine (2) afin de lubrifier et/ou refroidir un ou plusieurs paliers ou d'autres composants de machine. Cette machine est caractérisée en ce que, dans le canal d'entrée (8), à proximité de la pompe à huile (4), un barrage (16) soit prévu en étant supérieur à la hauteur (A) de l'axe central (18) de l'arbre (13) de la pompe à huile (4) soustrait du plus petit diamètre (B) du rotor (12) de la pompe à huile (4) divisé par deux.
PCT/IB2018/055280 2017-08-29 2018-07-17 Machine équipée d'une pompe à huile et procédé de démarrage d'une telle machine WO2019043470A1 (fr)

Priority Applications (12)

Application Number Priority Date Filing Date Title
FIEP18749566.8T FI3676482T3 (fi) 2017-08-29 2018-07-17 Kone, johon on järjestetty öljypumppu, ja menetelmä sellaisen koneen käynnistämiseksi
KR1020207009040A KR102541222B1 (ko) 2017-08-29 2018-07-17 오일 펌프를 구비한 기계와 상기 기계를 기동하는 방법
PL18749566.8T PL3676482T3 (pl) 2017-08-29 2018-07-17 Urządzenie wyposażone w pompę oleju i sposób uruchamiania takiego urządzenia
JP2020508016A JP7185683B2 (ja) 2017-08-29 2018-07-17 オイルポンプを備えた機械及びこのような機械を始動する方法
US16/628,889 US11506093B2 (en) 2017-08-29 2018-07-17 Machine provided with an oil pump and a method to start such a machine
UAA202000688A UA126809C2 (uk) 2017-08-29 2018-07-17 Машина, яка має олійну помпу, і спосіб запуску такої машини
BR112020003936-5A BR112020003936A2 (pt) 2017-08-29 2018-07-17 máquina dotada de uma bomba de óleo e um método para iniciar tal máquina
EP18749566.8A EP3676482B1 (fr) 2017-08-29 2018-07-17 Machine équipée d'une pompe à huile et procédé de démarrage d'une telle machine
RU2020112399A RU2761330C2 (ru) 2017-08-29 2018-07-17 Машина, снабженная масляным насосом, и способ запуска такой машины
CN201880052098.1A CN111033004B (zh) 2017-08-29 2018-07-17 设置有油泵的机器及用于启动这种机器的方法
MX2020002121A MX2020002121A (es) 2017-08-29 2018-07-17 Maquina provista de una bomba de aceite y un metodo para arrancar dicha maquina.
ES18749566T ES2933182T3 (es) 2017-08-29 2018-07-17 Máquina provista de una bomba de aceite y un método para poner en marcha dicha máquina

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201762551323P 2017-08-29 2017-08-29
US62/551,323 2017-08-29
BE2018/5151A BE1025520B1 (nl) 2017-08-29 2018-03-12 Machine voorzien van een oliepomp en een werkwijze om dergelijke machine te starten
BE2018/5151 2018-03-12

Publications (1)

Publication Number Publication Date
WO2019043470A1 true WO2019043470A1 (fr) 2019-03-07

Family

ID=63080237

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2018/055280 WO2019043470A1 (fr) 2017-08-29 2018-07-17 Machine équipée d'une pompe à huile et procédé de démarrage d'une telle machine

Country Status (1)

Country Link
WO (1) WO2019043470A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3186630A (en) * 1963-09-05 1965-06-01 Jaeger Machine Co Rotary compressor
US3859013A (en) 1974-02-04 1975-01-07 Gen Motors Corp Rotary engine oil pump priming arrangement
US3995978A (en) 1975-04-04 1976-12-07 Eaton Corporation Hydraulic fluid pressure device and porting arrangement therefor
EP0707138A1 (fr) * 1994-10-15 1996-04-17 Motorenfabrik Hatz GmbH & Co. KG Pompe à huile pour un moteur à combustion interne
US20030059326A1 (en) * 2000-11-22 2003-03-27 Kenji Douzono Oil free type screw compressor
WO2009012921A1 (fr) * 2007-07-25 2009-01-29 Ixetic Bad Homburg Gmbh Carter de pompe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3186630A (en) * 1963-09-05 1965-06-01 Jaeger Machine Co Rotary compressor
US3859013A (en) 1974-02-04 1975-01-07 Gen Motors Corp Rotary engine oil pump priming arrangement
US3995978A (en) 1975-04-04 1976-12-07 Eaton Corporation Hydraulic fluid pressure device and porting arrangement therefor
EP0707138A1 (fr) * 1994-10-15 1996-04-17 Motorenfabrik Hatz GmbH & Co. KG Pompe à huile pour un moteur à combustion interne
US20030059326A1 (en) * 2000-11-22 2003-03-27 Kenji Douzono Oil free type screw compressor
WO2009012921A1 (fr) * 2007-07-25 2009-01-29 Ixetic Bad Homburg Gmbh Carter de pompe

Similar Documents

Publication Publication Date Title
CN108730191B (zh) 油路、无油压缩机和经由油路控制润滑和/或冷却的方法
CN105952639B (zh) 压缩机设备以及此种压缩机设备的应用
RU2443881C2 (ru) Газотурбинный двигатель, содержащий стартер, установленный на коробке приводов агрегатов
CN1496447A (zh) 注水式螺杆压缩机
CN103443460B (zh) 用于潜油泵的驱动单元和泵
US20150345496A1 (en) Lubrication system for a rotary vacuum pump
US20120003105A1 (en) Dry vacuum pump
RU2445513C1 (ru) Винтовой маслозаполненный компрессорный агрегат
EP3392478B1 (fr) Circuit d'huile, compresseur sans huile muni d'un tel circuit d'huile et procédé de réglage de la lubrification et/ou le refroidissement d'un tel compresseur sans huile par l'intermédiaire d'un tel circuit d'huile
EP3676482B1 (fr) Machine équipée d'une pompe à huile et procédé de démarrage d'une telle machine
WO2019043470A1 (fr) Machine équipée d'une pompe à huile et procédé de démarrage d'une telle machine
CN111033004B (zh) 设置有油泵的机器及用于启动这种机器的方法
JP6511321B2 (ja) 給油式容積型圧縮機
AU2019101259A4 (en) Oil circuit, oil-free compressor provided with such oil circuit and a method to control lubrication and/or cooling of such oil-free compressor via such oil circuit
CA3060655C (fr) Circuit d'huile, compresseur sans huile dote d'un tel circuit d'huile et procede de commande de lubrification et/ou de refroidissement d'un tel compresseur sans huile par l'interm ediaire d'un tel circuit d'huile
KR20170138997A (ko) 압축기 장치
US3158102A (en) Cooling and sealing of rotary equipment
RU101755U1 (ru) Винтовой маслозаполненный компрессорный агрегат

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18749566

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020508016

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112020003936

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 20207009040

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2018749566

Country of ref document: EP

Effective date: 20200330

ENP Entry into the national phase

Ref document number: 112020003936

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20200227