US20190309747A1 - Screw Compressor for a Utility Vehicle - Google Patents

Screw Compressor for a Utility Vehicle Download PDF

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Publication number
US20190309747A1
US20190309747A1 US16/333,574 US201716333574A US2019309747A1 US 20190309747 A1 US20190309747 A1 US 20190309747A1 US 201716333574 A US201716333574 A US 201716333574A US 2019309747 A1 US2019309747 A1 US 2019309747A1
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US
United States
Prior art keywords
oil
screw compressor
air outlet
outlet pipe
air
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.)
Abandoned
Application number
US16/333,574
Other languages
English (en)
Inventor
Gilles Hebrard
Jean-Baptiste Marescot
Joerg MELLAR
Thomas Weinhold
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.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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 Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Assigned to KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH reassignment KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Marescot, Jean-Baptiste, HEBRARD, GILLES, MELLAR, JOERG, WEINHOLD, THOMAS
Publication of US20190309747A1 publication Critical patent/US20190309747A1/en
Abandoned legal-status Critical Current

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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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/22—Rotary-piston machines or pumps of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation
    • 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
    • F04C18/16—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 helical teeth, e.g. chevron-shaped, screw 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/02—Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C2/04—Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of internal axis 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C2210/10—Fluid working
    • F04C2210/1005—Air
    • 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
    • F04C2210/22—Fluid gaseous, i.e. compressible
    • F04C2210/221—Air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/16—Air or water being indistinctly used as working fluid, i.e. the machine can work equally with air or water without any modification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/98—Lubrication

Definitions

  • the present invention relates to a screw compressor for a utility vehicle.
  • Screw compressors for utility vehicles are already known from the prior art. Such screw compressors are used to provide the compressed air required for the brake system of the utility vehicle, for example.
  • oil-filled compressors in particular also screw compressors
  • screw compressors in the case of which it is necessary to regulate the oil temperature.
  • an external oil cooler being provided which is connected to the oil-filled compressor and to the oil circuit via a thermostat valve.
  • the oil cooler is a heat exchanger which has two mutually separate circuits, wherein the first circuit is provided for the hot liquid, that is to say the compressor oil, and the second circuit is provided for the cooling liquid.
  • cooling liquid use may for example be made of air, water mixtures with an antifreeze, or another oil.
  • This oil cooler must then be connected to the compressor oil circuit by means of pipes or hoses, and the oil circuit must be safeguarded against leakage.
  • This external volume must furthermore be filled with oil, such that the total quantity of oil is also increased.
  • the system inertia is thus increased.
  • the oil cooler must be mechanically accommodated and fastened, either by means of brackets situated in the surroundings or by means of a separate bracket, which necessitates additional fastening means and also structural space.
  • DE 37 17 493 A1 discloses a screw compressor installation which is arranged in a compact housing and which has an oil cooler on the electric motor of the screw compressor.
  • a generic screw compressor is already known for example from DE 10 2004 060 417 B4.
  • a screw compressor for a utility vehicle equipped with a rotor housing in which the screws of the screw compressor are arranged.
  • An air outlet pipe is arranged at the outlet side of the housing cover and has a riser line, wherein the air outlet pipe has at least one oil separator.
  • the invention is based on the underlying concept, in the case of a screw compressor, of performing an initial oil separation already at the outlet side of the housing cover and of the screws which serve for the compression for example of the air or of some other fluid.
  • This initial oil separation is realized not by way of a conventional oil separator but rather already by way of the air outlet pipe through which the compressed fluid, in particular the compressed air, is discharged out of the rotor housing or, after the compression by the screws, onward in the screw compressor.
  • an oil return opening may for example be an opening in a wall of the air outlet pipe, through which opening the oil that precipitates on the walls of the air outlet pipe can run out.
  • the oil return opening may be formed by a simple bore. This permits simple assembly and at the same time also simple positioning of the oil return opening.
  • the air outlet pipe By means of a conical form of the air outlet pipe, it is made possible for oil particles to be separated out of the air, and for these to be prevented from exiting the air outlet pipe, owing to the action of gravitational force.
  • the riser line may be of conical form at an end side.
  • FIG. 1 shows a schematic sectional drawing through a screw compressor according to the invention
  • FIG. 2 shows a perspective detail view of the rotor housing of the screw compressor, with air outlet pipe of the screw compressor, as per FIG. 1 , and
  • FIG. 3 shows a perspective sectional drawing through the air outlet pipe as per FIG. 2 .
  • FIG. 1 shows, in a schematic sectional illustration, a screw compressor 10 in the context of an exemplary embodiment of the present invention.
  • the screw compressor 10 has a fastening flange 12 for the mechanical fastening of the screw compressor 10 to an electric motor (not shown in any more detail here).
  • the screw 18 meshes with the screw 16 and is driven by means of the latter.
  • the screw compressor 10 has a housing 20 in which the main components of the screw compressor 10 are accommodated.
  • the housing 20 is filled with oil 22 .
  • an inlet connector 24 is provided on the housing 20 of the screw compressor 10 .
  • the inlet connector 24 is in this case designed such that an air filter 26 is arranged at said inlet connector.
  • an air inlet 28 is provided radially on the air inlet connector 24 .
  • a spring-loaded valve insert 30 which is designed here as an axial seal.
  • This valve insert 30 serves as a check valve.
  • an air feed channel 32 Downstream of the valve insert 30 , there is provided an air feed channel 32 which feeds the air to the two screws 16 , 18 .
  • an air outlet pipe 34 with a riser line 36 .
  • a temperature sensor 38 In the region of the end of the riser line 36 , there is provided a temperature sensor 38 by means of which the oil temperature can be monitored.
  • a holder 40 for an air deoiling element 42 is also provided in the air outlet region.
  • the holder 40 for the air deoiling element has the air deoiling element 42 in the region facing toward the base (as also shown in FIG. 1 ).
  • a corresponding filter screen or known filter and oil separation devices 44 is also provided, in the interior of the air deoiling element 42 , which will not be specified in any more detail.
  • the holder for the air deoiling element 42 has an air outlet opening 46 which leads to a check valve 48 and a minimum pressure valve 50 .
  • the check valve 48 and the minimum pressure valve 50 may also be formed in one common combined valve.
  • the air outlet 51 is provided downstream of the check valve 48 .
  • the air outlet 51 is generally connected to correspondingly known compressed-air consumers.
  • a riser line 52 is provided which has a filter and check valve 54 at the outlet of the holder 40 for the air deoiling element 42 at the transition into the housing 20 .
  • a nozzle 56 is provided, downstream of the filter and check valve 54 , in a housing bore.
  • the oil return line 58 leads back into approximately the central region of the screw 16 or of the screw 18 in order to feed oil 22 thereto again.
  • An oil drain screw 59 is provided in the base region, in the assembled state, of the housing 20 .
  • a corresponding oil outflow opening can be opened, via which the oil 22 can be drained.
  • the attachment piece 60 to which the oil filter 62 is fastened. Via an oil filter inlet channel 64 , which is arranged in the housing 20 , the oil 22 is conducted firstly to a thermostat valve 66 .
  • thermostat valve 66 it is possible for an open-loop and/or closed-loop control device to be provided by means of which the oil temperature of the oil 22 situated in the housing 20 can be monitored and set to a setpoint value.
  • the cooler 74 is connected to the attachment piece 60 , as will be discussed in more detail below in FIGS. 2 to 4 .
  • a safety valve 76 In the upper region of the housing 20 (in relation to the assembled state), there is situated a safety valve 76 , by means of which an excessively high pressure in the housing 20 can be dissipated.
  • a bypass line 78 which leads to a relief valve 80 .
  • a relief valve 80 which is activated by means of a connection to the air feed 32 , air can be returned into the region of the air inlet 28 .
  • a ventilation valve not shown in any more detail
  • a nozzle nozzle
  • an oil level sensor 82 may be provided in the outer wall of the housing 20 .
  • Said oil level sensor 82 may for example be an optical sensor, and may be designed and configured such that, on the basis of the sensor signal, it can be identified whether the oil level during operation is above the oil level sensor 82 or whether the oil level sensor 82 is exposed, and thus the oil level has correspondingly fallen.
  • an alarm unit which outputs or transmits a corresponding error message or warning message to the user of the system.
  • the function of the screw compressor 10 shown in FIG. 1 is as follows.
  • Air is fed via the air inlet 28 and passes via the check valve 30 to the screws 16 , 18 , where the air is compressed.
  • the compressed air-oil mixture which, having been compressed by a factor of between 5 and 16 downstream of the screws 16 and 18 , rises through the outlet line 34 via the riser pipe 36 , is blown directly onto the temperature sensor 38 .
  • the air which still partially carries oil particles, is then conducted via the holder 40 into the air deoiling element 42 and, if the corresponding minimum pressure is attained, passes into the air outlet line 51 .
  • the oil 22 situated in the housing 20 is kept at operating temperature via the oil filter 62 and possibly via the heat exchanger 74 .
  • the heat exchanger 74 is not used and is also not activated.
  • the corresponding activation is performed by means of the thermostat valve 66 .
  • oil is fed via the line 68 to the screw 18 or to the screw 16 , and also to the bearing 70 .
  • the screw 16 or the screw 18 is supplied with oil 22 via the return line 52 , 58 , and the purification of the oil 22 takes place here in the air deoiling element 42 .
  • the relief valve 80 (not shown in any more detail), it is ensured that the high pressure that prevails for example at the outlet side of the screws 16 , 18 in the operational state cannot be enclosed in the region of the feed line 32 , and that, instead, in particular during the start-up of the compressor, there is always a low inlet pressure, in particular atmospheric pressure, prevailing in the region of the feed line 32 . Otherwise, upon a start-up of the compressor, a very high pressure would initially be generated at the outlet side of the screws 16 and 18 , which would overload the drive motor.
  • FIG. 2 shows, in a perspective view, the housing cover 20 a of the screw compressor 10 as shown in FIG. 1 .
  • the housing cover 20 a has an outlet which is adjoined by the air outlet pipe 34 .
  • the air outlet pipe 34 has an attachment piece 34 a , by means of which the air outlet pipe 34 is connected to the housing cover 20 a.
  • the air outlet pipe 34 furthermore has a riser line 36 .
  • the riser line 36 is of conically widened form, specifically in the end-side region 36 a.
  • the air outlet pipe 34 furthermore has an oil return opening 100 in the region of its attachment piece 34 a.
  • the oil return opening 100 is formed as a bore.
  • the oil return opening 100 connects the interior of the air outlet pipe 34 to the oil sump 22 a.
  • the air outlet pipe 34 has, altogether, an oil separator which serves for the initial oil separation even before the air compressed by the screw compressor 10 is conducted through the oil separator.
  • the oil separation occurs in that, owing to the conical widening and the reduction of the flow speed that is also achieved as a result in this region, oil particles situated in the air stream can fall back again owing to the action of gravitational force, can precipitate on the walls in the interior of the air outlet pipe 34 , and can then flow back through the oil return opening 100 into the oil sump 22 a.
  • FIG. 3 shows a perspective sectional drawing through the air outlet pipe as per FIG. 2 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Compressor (AREA)
US16/333,574 2016-09-21 2017-09-19 Screw Compressor for a Utility Vehicle Abandoned US20190309747A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016011506.8A DE102016011506A1 (de) 2016-09-21 2016-09-21 Schraubenkompressor für ein Nutzfahrzeug
DE102016011506.8 2016-09-21
PCT/EP2017/073573 WO2018054875A1 (de) 2016-09-21 2017-09-19 Schraubenkompressor für ein nutzfahrzeug

Publications (1)

Publication Number Publication Date
US20190309747A1 true US20190309747A1 (en) 2019-10-10

Family

ID=59969134

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/333,574 Abandoned US20190309747A1 (en) 2016-09-21 2017-09-19 Screw Compressor for a Utility Vehicle

Country Status (8)

Country Link
US (1) US20190309747A1 (ko)
EP (1) EP3516235A1 (ko)
JP (1) JP2019529804A (ko)
KR (1) KR20190047064A (ko)
CN (1) CN109923314A (ko)
BR (1) BR112019005071A2 (ko)
DE (1) DE102016011506A1 (ko)
WO (1) WO2018054875A1 (ko)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4748873A (en) 1986-05-23 1988-06-07 Raymond Engineering Inc. Power wrench
JPS63306288A (ja) * 1987-06-05 1988-12-14 Mitsubishi Heavy Ind Ltd 圧縮機
US4780061A (en) 1987-08-06 1988-10-25 American Standard Inc. Screw compressor with integral oil cooling
JPH08219024A (ja) * 1995-02-14 1996-08-27 Iwata Air Compressor Mfg Co Ltd 油冷式圧縮機のドレン水除去方法ならびに装置
JPH11303779A (ja) * 1998-04-20 1999-11-02 Fujitsu General Ltd 密閉型圧縮機
DE19845993A1 (de) * 1998-10-06 2000-04-20 Bitzer Kuehlmaschinenbau Gmbh Schraubenverdichter
DE102004060417B4 (de) 2004-12-14 2006-10-26 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Kompakter Schraubenkompressor zum mobilen Einsatz in einem Fahrzeug
DE102005010690B4 (de) * 2005-03-09 2007-04-12 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Öleingespritzter Verdichter mit Temperaturschalter
DE102006010723A1 (de) * 2006-03-08 2007-09-13 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Kompressoranordnung
FR2985552A1 (fr) * 2012-01-11 2013-07-12 Danfoss Commercial Compressors Systeme thermodynamique
BE1020312A3 (nl) * 2012-02-28 2013-07-02 Atlas Copco Airpower Nv Compressorinrichting, evenals gebruik van zulke opstelling.
DE102013020533A1 (de) * 2013-12-12 2015-07-02 Gea Refrigeration Germany Gmbh Verdichter
DE102014118266B3 (de) * 2014-12-10 2016-06-02 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Kompressorvorrichtung mit separatem Luftentölelement

Also Published As

Publication number Publication date
DE102016011506A1 (de) 2018-03-22
BR112019005071A2 (pt) 2019-06-04
KR20190047064A (ko) 2019-05-07
EP3516235A1 (de) 2019-07-31
WO2018054875A1 (de) 2018-03-29
CN109923314A (zh) 2019-06-21
JP2019529804A (ja) 2019-10-17

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