EP3516227A1 - Système pour véhicule utilitaire, comprenant un compresseur à vis ainsi qu'un moteur électrique - Google Patents

Système pour véhicule utilitaire, comprenant un compresseur à vis ainsi qu'un moteur électrique

Info

Publication number
EP3516227A1
EP3516227A1 EP17780635.3A EP17780635A EP3516227A1 EP 3516227 A1 EP3516227 A1 EP 3516227A1 EP 17780635 A EP17780635 A EP 17780635A EP 3516227 A1 EP3516227 A1 EP 3516227A1
Authority
EP
European Patent Office
Prior art keywords
electric motor
flange
screw compressor
oil
cooling
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Withdrawn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
EP17780635.3A
Other languages
German (de)
English (en)
Inventor
Gilles Hebrard
Jean-Baptiste Marescot
Jörg MELLAR
Thomas Weinhold
Hakan Carlsson
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 EP3516227A1 publication Critical patent/EP3516227A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid
    • F04C27/006—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type pumps, e.g. gear 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
    • 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
    • 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
    • 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
    • F04C2240/40—Electric motor
    • 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
    • F05B2260/20—Heat transfer, e.g. cooling
    • F05B2260/211—Heat transfer, e.g. cooling by intercooling, e.g. during a compression cycle
    • F05B2260/212—Heat transfer, e.g. cooling by intercooling, e.g. during a compression cycle by water injection

Definitions

  • the present invention relates to a system for a commercial vehicle comprising a screw compressor and an electric motor.
  • 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.
  • 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.
  • the DE 37 17493 A1 discloses a arranged in a compact housing screw compressor system having an oil cooler on the electric motor of the screw compressor.
  • Heat exchanger of a motor vehicle having cooling channels
  • Flange connection is known, wherein the flange connection has a connection flange which is a die-cast part and has through-holes produced by casting technology for receiving threaded bolts.
  • Cooling possibility for a generic system can be provided.
  • a system for a commercial vehicle comprising a screw compressor and an electric motor with the features of claim 1.
  • a system for a commercial vehicle comprises a screw compressor and an electric motor, wherein the electric motor drives the screw compressor, and wherein the electric motor with the
  • Screw compressor is connected by means of a flange, wherein the flange has at least one cooling connection and wherein in the flange at least one
  • Cooling channel is provided.
  • the invention is based on the idea of providing a space-saving cooling possibility by providing a connecting element between the screw compressor and the electric motor, which is cooled. As a result, it is no longer necessary to provide air cooling of the electric motor and the screw compressor. Rather, a cooling possibility is created directly at the point where most of the heat development of the system is present.
  • the arrangement of the flange between the electric motor and screw compressor and the fact that at least one cooling channel is provided in the flange cooling with a suitable cooling fluid can be made possible.
  • the flange is a separate component. This makes it possible to easily provide correspondingdekanalgeometrien in the flange can. Both the screw compressor and the electric motor can in this case with regard to the mechanical interface, i. the corresponding flanges are designed or remain standard and do not require any
  • the drive shaft can be guided to drive the screw compressor by the electric motor.
  • the resulting heat can thus be easily removed via the flange.
  • the cooling fluid for the flange can be a water-based cooling fluid, in particular cooling water or a mixture of water and another component, such as water. Methylene Gluckol or another suitable antifreeze.
  • Compressed air generation is used.
  • this may be a
  • Screw compressor which serves to supply compressed air to a pneumatic brake system of a commercial vehicle.
  • Screw compressor with an electric motor it is possible to enable such a system in the hybrid vehicle in the commercial vehicle sector.
  • a highly efficient system can be provided.
  • the electric motor may have an electric motor flange, which is provided for connection to the flange.
  • the electric motor flange can be a standard electric motor flange of the electric motor. An adaptation is therefore not required, which allows a cost-effective solution.
  • the cooling channel of the flange is opened in the mounted state in the direction of the electric motor flange. This allows direct contact of the cooling fluid with at least the part of the electric motor flange. As a result, an efficient heat removal of heat from the electric motor via the electric motor flange and the cooling fluid in the cooling channel of the flange can be made possible.
  • the seal of the cooling channel can be realized by the assembly of electric motor flange and flange only in the assembled state. This is simply realized that the cooling fluid in the assembled state of the system should come into direct contact at least with parts of the electric motor flange and can.
  • the electric motor does not have a separate cooling channel and / or coolant connections. This ensures that the electric motor does not require any special adjustments, which enables a cost-effective production and installation of the system.
  • Fig. 1 is a schematic sectional view of an inventive
  • Fig. 2 is a perspective view of the system in the assembled state; and Fig. 3a, b perspective views of the flange between
  • 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 In the region of the end of the 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 Provided further in the air outlet area is a holder 40 for an air de-oiling element 42.
  • the holder 40 for the air de-oiling element has in the installed state in the area facing the bottom (as also shown in FIG. 1) the air de-oiling element 42.
  • 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. 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 to supply oil 22 again.
  • an oil drain plug 59 is provided in the assembled state of the bottom portion of the housing 20.
  • 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 22 can be monitored and adjusted 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.
  • 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. Before the minimum pressure valve 50 is a bypass line 78, which leads to a relief valve 80. About this relief valve 80 by means of a
  • air can be returned to the region of the air inlet 28. In this area can not be closer shown vent valve 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 designed and set up so that it can be detected from the sensor signal, if the oil level is above the ⁇ llevelsensors 82 in operation or if the ⁇ llevelsensor 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 by a factor of between 5 and 16 times compression after the screws 16 and 18 through the outlet conduit 34 via the riser 36, 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 that the corresponding minimum pressure is reached, enters the air outlet line 51.
  • the oil 22 located in the housing 20 is maintained at the operating temperature via the oil filter 62 and possibly via the heat exchanger 74.
  • the heat exchanger 74 is not used and is not switched on. The corresponding connection is made via the thermostatic valve 68.
  • Purification in the oil filter 64 is supplied via the line 68 oil of the screw 18 or the screw 16, but also the bearing 72.
  • the screw 16 or the screw 18 is supplied via the return line 52, 58 with oil 22, here is the purification of the oil 22 in the air de-oiling 42nd
  • Fig. 2 shows in perspective view a view of an inventive
  • FIGS. 3 a and 3b show perspective views of the flange 12 between the screw compressor 10 and the electric motor 5.
  • the flange 12 is formed as a separate component, which between the
  • Screw compressor 10 and the electric motor 5 is arranged.
  • the drive shaft 14 is guided through the central opening 100 of the flange 12.
  • the flange 12 has a cooling channel 102.
  • the cooling channel 102 of the flange 12 is, as can also be seen in detail in FIG. 3 a, open in the direction of the electric motor flange relative to the assembled arrangement.
  • the seal of the cooling channel 102 is only by assembling
  • Electric motor flange and flange 12 formed in the assembled state.
  • the electric motor 5 or the electric motor flange have no cooling channel and no coolant connections.
  • the coolant of the cooling system of the screw compressor 10 is generally used and circulated via the cooling passage 102 (see Fig. 3a) in the flange 12 and is connected to the cooling ports 104, 106th
  • the cooling liquid After cooling the oil, the cooling liquid returns to the vehicle cooling circuit (not shown in detail) and is thereupon via the cooling outlet port 110

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

La présente invention concerne un système (1) pour un véhicule utilitaire, comprenant un compresseur à vis (10) ainsi qu'un moteur électrique (5), le moteur électrique (5) entraînant le compresseur à vis (10), et le moteur électrique (5) étant relié au compresseur à vis (10) au moyen d'une bride (12), la bride (12) présentant au moins un raccord de refroidissement (104, 106) et au moins un canal de refroidissement étant prévu dans la bride (12).
EP17780635.3A 2016-09-21 2017-09-19 Système pour véhicule utilitaire, comprenant un compresseur à vis ainsi qu'un moteur électrique Withdrawn EP3516227A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016011442.8A DE102016011442A1 (de) 2016-09-21 2016-09-21 System für ein Nutzfahrzeug umfassend einen Schraubenkompressor sowie einen Elektromotor
PCT/EP2017/073537 WO2018054855A1 (fr) 2016-09-21 2017-09-19 Système pour véhicule utilitaire, comprenant un compresseur à vis ainsi qu'un moteur électrique

Publications (1)

Publication Number Publication Date
EP3516227A1 true EP3516227A1 (fr) 2019-07-31

Family

ID=60037545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17780635.3A Withdrawn EP3516227A1 (fr) 2016-09-21 2017-09-19 Système pour véhicule utilitaire, comprenant un compresseur à vis ainsi qu'un moteur électrique

Country Status (8)

Country Link
US (1) US20190203712A1 (fr)
EP (1) EP3516227A1 (fr)
JP (1) JP6835974B2 (fr)
KR (1) KR102267530B1 (fr)
CN (1) CN109790838B (fr)
BR (1) BR112019005066A2 (fr)
DE (1) DE102016011442A1 (fr)
WO (1) WO2018054855A1 (fr)

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BE1028274B1 (nl) * 2020-05-07 2021-12-07 Atlas Copco Airpower Nv Compressorelement met verbeterede olie-injector
CN114738279A (zh) * 2022-03-26 2022-07-12 上海坤彧节能科技有限公司 一种带级间冷却装置的双级压缩主机
DE102024122721A1 (de) * 2024-08-08 2026-02-12 OET GmbH System zur Druckluftversorgung in einem Kraftfahrzeug

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US6287088B1 (en) * 1998-09-17 2001-09-11 Hitachi, Ltd. Oil free screw compressor

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Also Published As

Publication number Publication date
KR102267530B1 (ko) 2021-06-18
DE102016011442A1 (de) 2018-03-22
BR112019005066A2 (pt) 2019-06-18
JP2019529793A (ja) 2019-10-17
JP6835974B2 (ja) 2021-02-24
WO2018054855A1 (fr) 2018-03-29
CN109790838B (zh) 2021-04-30
US20190203712A1 (en) 2019-07-04
CN109790838A (zh) 2019-05-21
KR20190044685A (ko) 2019-04-30

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