EP3516171A1 - Compresseur à vis pour véhicule utilitaire - Google Patents

Compresseur à vis pour véhicule utilitaire

Info

Publication number
EP3516171A1
EP3516171A1 EP17769061.7A EP17769061A EP3516171A1 EP 3516171 A1 EP3516171 A1 EP 3516171A1 EP 17769061 A EP17769061 A EP 17769061A EP 3516171 A1 EP3516171 A1 EP 3516171A1
Authority
EP
European Patent Office
Prior art keywords
housing
oil
screw compressor
heat exchanger
screw
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.)
Pending
Application number
EP17769061.7A
Other languages
German (de)
English (en)
Inventor
Gilles Hebrard
Jean-Baptiste Marescot
Jörg 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
Publication of EP3516171A1 publication Critical patent/EP3516171A1/fr
Pending 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
    • 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
    • F04C29/04—Heating; Cooling; Heat insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/007—General arrangements of parts; Frames and supporting elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • 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
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids 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
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids 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 both members having co-operating elements in spiral form
    • F04C18/023—Rotary-piston pumps specially adapted for elastic fluids 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 both members having co-operating elements in spiral form where both members are moving
    • 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
    • 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
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • 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
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/805—Fastening means, e.g. bolts
    • 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
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/806—Pipes for fluids; Fittings therefor
    • 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
    • F05B2260/30—Retaining components in desired mutual position
    • F05B2260/301—Retaining bolts or nuts
    • 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

  • Screw compressor for a commercial vehicle The present invention relates to a screw compressor for a commercial vehicle.
  • Screw compressors for commercial vehicles are already known from the prior art. Such screw compressors are used to provide the necessary compressed air for, for example, the braking system of the commercial vehicle.
  • oil-filled compressors especially screw compressors are known in which the task is to regulate the oil temperature. This is usually accomplished by having an external oil cooler, the compressor filled with the oil and the
  • Oil circuit is connected via a thermostatic valve.
  • the oil cooler is here
  • Heat exchanger having two separate circuits, wherein the first circuit for the hot liquid, so the compressor oil is provided and the second for the cooling liquid.
  • a coolant for example, air
  • Water mixtures can be used with an antifreeze or other oil.
  • This oil cooler must then be connected to the compressor oil circuit via pipes or hoses and the oil circuit must be secured against leakage.
  • This external volume must also be filled with oil, so that the total amount of oil is increased. This increases the system inertia.
  • the oil cooler must be mechanically housed and secured, either by surrounding brackets or by a separate bracket, which requires additional means of improvement, but also space.
  • Screw compressor for a commercial vehicle is provided with a housing, wherein the housing is filled with oil, the screw compressor further at least a few compressor screws (also called compressor rotors), which are mounted in the housing and used for compression of the screw compressor fluid, in particular air, wherein in the assembled state of the screw compressor directly to the housing, a heat exchanger is mounted and mounted, by means of which the temperature of the oil contained in the housing is adjustable.
  • compressor screws also called compressor rotors
  • the invention is based on the basic idea that by the direct placement of the heat exchanger on the housing, the total volume required and death volume of oil can be reduced.
  • the direct placement of the heat exchanger on the housing of the screw compressor requires no large communication paths from the screw compressor housing into the heat exchanger. Rather, the oil can be taken directly from the
  • Screw compressor are introduced into the heat exchanger inside.
  • the required oil volume is thus kept relatively low.
  • the thermal inertia of the system is reduced. In other words, thus the dead volume is reduced, or the volume that must be filled with oil around the lines between
  • the oil is brought quickly to operating temperature, especially in the start-up phase, when the oil is controlled by the thermostat initially does not flow through the heat exchanger / cooler and thereby quickly reaches operating temperature.
  • two ring lugs are provided in the housing, which is used to attach the heat exchanger to the housing of the
  • the ring projections are formed concentrically. This facilitates positioning of the heat exchanger on the housing.
  • a concentric arrangement of the ring lugs is also useful in terms of sealing effect, which is required to seal the mounted on the housing heat exchanger at the interface to the housing accordingly.
  • the housing has a receptacle for a
  • Ring approaches as well as fixing by means of the screw, which is housed inside the two ring approaches accomplish.
  • the screw for fastening the heat exchanger is a hollow screw.
  • the hollow screw it is possible to supply oil to the heat exchanger or due to the hollow screw oil from the heat exchanger in the housing of the screw compressor.
  • the hollow screw serves as a fluid channel for the guided to the heat exchanger oil or the guided back from the heat exchanger into the housing oil.
  • the heat exchanger is designed air-cooled.
  • the heat exchanger can be designed to be water-cooled.
  • the cooling water is mixed with antifreeze, for example methylene glycol or the like.
  • thermostat and a control and / or
  • Regulation means may be provided by means of which the oil temperature of the oil in the housing can be monitored and adjusted to a desired value. This makes it possible to use the heat exchanger only if this is necessary. This makes it possible, for example when starting the screw compressor to reach the operating temperature faster. Further details and advantages of the invention will now be based on a in the
  • Fig. 1 is a schematic sectional view through an inventive
  • Fig. 2 is a perspective view of a screw compressor
  • FIG. 3 shows a further perspective view of a screw compressor according to FIG. 2; FIG. and
  • Fig. 4 is a schematic, perspective sectional view through the
  • Fig. 1 shows a schematic sectional view of a screw compressor 10 in the sense of an embodiment of the present invention.
  • the screw compressor 10 has a mounting flange 12 for mechanical attachment of the screw compressor 10 to an electric motor not shown here.
  • the screw 18 meshes with the screw 16 and is driven by this.
  • the screw compressor 10 has a housing 20 in which the essential components of the screw compressor 10 are housed.
  • the housing 20 is filled with oil 22.
  • Air inlet side is on the housing 20 of the screw compressor 10 a
  • Inlet port 24 is provided.
  • the inlet nozzle 24 is designed such that an air filter 26 is arranged on it.
  • an air inlet 28 is provided radially on the air inlet pipe 24.
  • a spring-loaded valve core 30 is provided, designed here as an axial seal. This valve insert 30 serves as a check valve.
  • an air supply channel 32 Downstream of the valve core 30, an air supply channel 32 is provided, which supplies the air to the two screws 16, 18.
  • an air outlet pipe 34 On the output side of the two screws 16, 18, an air outlet pipe 34 is provided with a riser 36.
  • a temperature sensor 38 is provided, by means of which the oil temperature can be monitored.
  • a holder 40 for an air de-oiling element 42 is provided in the air outlet area.
  • the holder 40 for the air de-oiling element has in the assembled state in the area facing the bottom (as shown in Fig. 1), the air de-oiling element 42.
  • the holder for the air de-oiling element 40 has a corresponding filter screen or known filter and oil-separating devices 44, which are not specified in detail.
  • the holder for the air de-oiling element 40 has a
  • the check valve 48 and the minimum pressure valve 50 may also be formed in a common, combined valve.
  • the air outlet 51 is provided.
  • the air outlet 51 is connected to correspondingly known compressed air consumers in the rule.
  • a riser 52 is provided which has the outlet of the holder 40 for the air de-oiling element 42 when passing into the housing 20 a filter and check valve 54.
  • a nozzle 56 Downstream of the filter and check valve 54, a nozzle 56 is provided in a housing bore.
  • the oil return line 58 leads back approximately in the middle region of the screw 16 or the screw 18 in order to supply oil 22 again.
  • an oil drain plug 59 is provided.
  • a first oil drain plug 59 is provided.
  • a second oil drain plug 59 is provided.
  • thermostatic valve 66 instead of the thermostatic valve 66, a control and / or
  • Regulation means may be provided by means of which the oil temperature of the oil 22 located in the housing 20 is monitored and set to a desired value.
  • a nozzle 72 is provided, which is provided in the housing 20 in connection with the return line 68.
  • the cooler 74 is connected to the projection 60, as will be explained in more detail below in FIGS. 2 to 4.
  • a safety valve 76 In the upper region of the housing 20 (relative to the mounted state) there is a safety valve 76, via which an excessive pressure in the housing 20 can be reduced.
  • connection with the air supply 32 is controlled, air can be returned to the region of the air inlet 28.
  • a vent valve not shown in detail and also a nozzle (diameter reduction of the feeding line) may be provided.
  • an oil level sensor 82 may be provided.
  • This oil level sensor 82 may be, for example, an optical sensor and arranged and set up so that it can be detected by the sensor signal, whether the oil level is above the oil level sensor 82 in operation or if the oil level sensor 82 is exposed and thereby the oil level has fallen accordingly.
  • an alarm unit can also be provided which outputs or forwards an appropriate 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 supplied via the air inlet 28 and passes through the check valve 30 to the screws 16, 18, where the air is compressed.
  • the compressed air-oil mixture which rises above the riser 36 by a factor of between 5 to 16 times compression after the screws 16 and 18 through the outlet conduit 34, is blown directly onto the temperature sensor 38.
  • the air which still partially carries oil particles, is then guided via the holder 40 into the air de-oiling element 42 and, provided the corresponding minimum pressure is reached, enters the air outlet line 51.
  • the oil 22 located in the housing 20 is conveyed via the oil filter 62 and, if necessary, kept at operating temperature via the heat exchanger 74.
  • the heat exchanger 74 is not used and is not switched on.
  • the heat exchanger 74 is shown in a perspective view, which is placed directly on the housing 20. In the assembled state, therefore, the heat exchanger 74 is placed and mounted directly on the housing 20, wherein by means of the heat exchanger 74, the temperature of the oil contained in the housing 20 22 is regulated. As further shown in Fig. 3, a double concentric radial extension 60 is provided with an outer ring 60a and an inner ring 60b for attachment of the heat exchanger 74.
  • a receptacle 90 is provided in the interior of the radial shoulder 60 b, which is for
  • Screwing a hollow screw 92 is used.
  • the hollow screw 92 serves on the one hand for fixing the oil cooler 74
  • Ring tabs 60a and 60b are used to supply oil 22 to the oil cooler 74.
  • the oil cooler 74 is designed as a water-cooled (in particular water-cooled with the addition of antifreeze). In another embodiment, an air-cooled heat exchanger may also be used.
  • the supply of the coolant takes place via the connections 94, 96 (see FIGS. 2 and 4).
  • the heat exchanger structure is formed here lamellar or here as a known and proven multi-plate structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

La présente invention concerne un compresseur à vis (10) pour véhicule utilitaire comprenant un carter (20), le carter (20) étant rempli d'huile (22), au moins une paire de vis de compresseur (16, 18) qui sont montées dans le carter (20) et qui servent à la compression de l'air amené par le compresseur à vis (10), un échangeur de chaleur (74) étant placé et monté directement sur le carter (20) à l'état monté, ledit échangeur de chaleur permettant de réguler la température de l'huile (22) contenue dans le carter (20).
EP17769061.7A 2016-09-21 2017-09-19 Compresseur à vis pour véhicule utilitaire Pending EP3516171A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016011443.6A DE102016011443A1 (de) 2016-09-21 2016-09-21 Schraubenkompressor für ein Nutzfahrzeug
PCT/EP2017/073535 WO2018054854A1 (fr) 2016-09-21 2017-09-19 Compresseur à vis pour véhicule utilitaire

Publications (1)

Publication Number Publication Date
EP3516171A1 true EP3516171A1 (fr) 2019-07-31

Family

ID=59914465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17769061.7A Pending EP3516171A1 (fr) 2016-09-21 2017-09-19 Compresseur à vis pour véhicule utilitaire

Country Status (8)

Country Link
US (1) US11181110B2 (fr)
EP (1) EP3516171A1 (fr)
JP (1) JP6844005B2 (fr)
KR (1) KR20190045944A (fr)
CN (1) CN109790750B (fr)
BR (1) BR112019005083A2 (fr)
DE (1) DE102016011443A1 (fr)
WO (1) WO2018054854A1 (fr)

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US11181110B2 (en) 2021-11-23
JP6844005B2 (ja) 2021-03-17
BR112019005083A2 (pt) 2019-06-04
WO2018054854A1 (fr) 2018-03-29
US20190203718A1 (en) 2019-07-04
KR20190045944A (ko) 2019-05-03
CN109790750B (zh) 2021-06-22
CN109790750A (zh) 2019-05-21
JP2019532221A (ja) 2019-11-07
DE102016011443A1 (de) 2018-03-22

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