EP3516226B1 - Compresseur à vis pour véhicule utilitaire - Google Patents

Compresseur à vis pour véhicule utilitaire Download PDF

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Publication number
EP3516226B1
EP3516226B1 EP17778213.3A EP17778213A EP3516226B1 EP 3516226 B1 EP3516226 B1 EP 3516226B1 EP 17778213 A EP17778213 A EP 17778213A EP 3516226 B1 EP3516226 B1 EP 3516226B1
Authority
EP
European Patent Office
Prior art keywords
oil
seal
screw compressor
housing
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.)
Active
Application number
EP17778213.3A
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German (de)
English (en)
Other versions
EP3516226A1 (fr
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
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Publication of EP3516226A1 publication Critical patent/EP3516226A1/fr
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Publication of EP3516226B1 publication Critical patent/EP3516226B1/fr
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Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • 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
    • F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • 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
    • 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
    • F04C2240/809—Lubricant sump
    • 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
    • F05B2240/00—Components
    • F05B2240/57—Seals
    • 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 commercial vehicle with at least one housing with at least one housing body and with at least one rotor housing, and with at least one baffle plate and with at least one seal, with an oil sump being present in the housing in the assembled state.
  • Screw compressors for commercial vehicles are already known from the prior art. Such screw compressors are used to provide the necessary compressed air for example for the braking system of the commercial vehicle.
  • oil-filled compressors in particular also screw compressors, are known in which the task is to regulate the oil temperature.
  • This is usually achieved by having an external oil cooler that is connected to the oil-filled compressor and the oil circuit via a thermostatic valve.
  • the oil cooler is a heat exchanger which has two separate circuits, the first circuit being provided for the hot liquid, that is to say the compressor oil, and the second being provided for the cooling liquid.
  • air, water mixtures with an antifreeze agent or another oil can be used as the coolant.
  • This oil cooler must then be connected to the compressor oil circuit via pipes or hoses and the oil circuit must be secured against leaks.
  • This external volume must also be filled with oil, so that the total amount of oil is also increased. This increases the system inertia.
  • the oil cooler must be housed and fastened mechanically, either by means of brackets located around it or by a separate bracket, which requires additional fastening means, but also installation space.
  • the compressor can be a screw compressor for a commercial vehicle.
  • the BE 857230 discloses a screw compressor with partition walls arranged in the housing of the screw compressor, so that several compartments are provided inside the screw compressor, but which do not form a seal.
  • the object of the present invention is to advantageously develop a screw compressor for a utility vehicle of the type mentioned at the outset, in particular to the effect that the removal of oil from the compressed air can be improved and simplified.
  • a screw compressor for a commercial vehicle with the features of claim 1.
  • a screw compressor for a commercial vehicle with at least one housing with at least one housing body and with at least one rotor housing, with at least one baffle plate and with at least one Seal is provided, with an oil sump present in the housing in the assembled state, the seal being arranged between the housing body and rotor housing and protruding from the oil sump in relation to the assembled state, the seal at least partially separating the interior of the housing body from the interior of the rotor housing and wherein the baffle is based on the assembled state horizontal alignment of the screw compressor and horizontal alignment of the oil sump is aligned essentially parallel to the upper level of the oil sump.
  • the housing can be designed in two parts or in several parts.
  • the multi-part structure is produced in particular in that the housing is assembled from a housing body and a rotor housing.
  • the invention is based on the basic idea of restricting the movement of the oil within the screw compressor by arranging appropriate elements, such as a seal and the baffle, which allow the oil to partially pass through. This ensures that the oil sump moves “below” the baffle even when the vehicle is in motion and that horizontal sloshing movements can also be prevented by the seal protruding from the oil sump. As a result, the entry of oil into corresponding elements for removing oil from the compressed air, such as an air oil separator or the like, can be reduced.
  • the baffle plate can have at least one, in particular several oil passage openings.
  • oil passage openings can be designed, for example, as elongated, rounded slots. This makes it possible for oil to rise from the oil sump, for example in the form of oil vapor or oil-aerosol, and to distribute itself inside the screw compressor.
  • the baffle plate and the seal subdivide the interior of the screw compressor into several interconnected compartments. This makes it possible to keep the oil in the corresponding compartments inside the screw compressor or to essentially provide oil vapor in certain compartments and to hold the oil sump or liquid oil in certain compartments.
  • the seal asymmetrically divides the housing interior into at least one first area and at least one second area, the first area being smaller than the second area.
  • This can For example, it can be achieved that certain areas that are to be supplied more with small oil droplets, oil aerosols or oil vapors are better reached and the first area, which is smaller than the second area, less with small oil droplets, oil aerosols or . Oil vapors are supplied.
  • the screw compressor can have an air-oil separator and an air-oil separator inlet, the air-oil separator inlet opening into the housing interior of the screw compressor and the passage openings of the seal being arranged in the vicinity of the air-oil separator inlet.
  • This makes it possible to make the air oil separator comparatively smaller.
  • it is possible to limit the entry of oil into the air oil separator through the design and arrangement of the seal. Because the passage openings of the seal are arranged in the vicinity of the air-oil separator inlet, the oil entry into the air-oil separator inlet and thus into the air-oil separator is already reduced.
  • the air-oil separator inlet is formed in the housing cover. This makes it easier to manufacture the air oil separator inlet.
  • the arrangement of the air oil separator inlet and the seal, which is located between the housing cover and the housing body in the assembled state, can also be adjusted in a comparatively simple manner.
  • the air-oil separator inlet opens into the first area of the housing interior.
  • the oil separator inlet opens into the area of the housing interior, which is designed to be smaller than the second area, the first and second areas being separated from one another by the seal.
  • the seal is arranged essentially vertically in relation to the assembled state with an essentially horizontal alignment of the screw compressor and with an essentially horizontal alignment of the oil sump. This makes it possible to simplify the return of the oil caught on the seal to the oil sump. As a result of gravity, this can simply flow back into the oil sump.
  • the passage openings can be designed essentially round, in particular circular. This design of the passage openings enables a simple Manufacture and manufacture of the seal. However, any other shape of the through openings is also possible in this context. This can result in further advantages, for example that the limitation of the displacement of oil by small oil droplets, oil vapors or oil aerosols is improved.
  • the seal is designed as a perforated plate, at least in some areas with the areas located inside the housing in the assembled state. This enables simple manufacture and manufacture of the seal.
  • the stability of the seal can also be influenced and made positive in this way. By a uniform arrangement of the holes in the areas in which the seal is designed as a perforated plate, a good area of passage openings can be provided without weakening the seal as a whole.
  • the seal can also have a baffle through opening.
  • the baffle plate passage opening is designed such that it is located approximately at the level of the surface of the oil sump in the assembled state.
  • the baffle plate and the seal can be arranged essentially perpendicular to one another. The formation of the baffle passage opening allows a simple design and assembly of the seal and baffle plate.
  • baffle makes it possible to keep essential parts of the oil sump in the deeper areas of the screw compressor even when the screw compressor is in operation and especially when the utility vehicle is being driven, and not to have to compensate for the oil sloshing back and forth.
  • the seal can have screw bolt through openings which are provided for the passage of screw bolts, by means of which the seal, housing body and rotor housing are screwed together. This enables simple, secure and reliable assembly of the seal between the housing body and the rotor housing.
  • seal and the baffle are plugged into one another. This facilitates the assembly and manufacture of the screw compressor as well as the seal and the baffle plate.
  • the seal and the baffle plate can be arranged crosswise to one another. This enables a simple and clear definition of compartments and also the corresponding areas inside the screw compressor.
  • the seal and the baffle plate are arranged essentially perpendicular to one another. This arrangement achieves a sensible division in the interior of the screw compressor. In addition, such an arrangement is helpful to use the seal in combination with the baffle plate as a vertical "baffle plate" in order to reliably prevent horizontal surge movements, to create the greatest possible obstacle effect and at the same time to allow drainage along the seal towards the oil sump.
  • Fig. 1 shows a schematic sectional view of a screw compressor 10 in the sense 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 detail 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 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 designed such that an air filter 26 is arranged on it.
  • an air inlet 28 is provided radially on the air inlet connector 24.
  • a spring-loaded valve insert 30 is provided, designed here as an axial seal.
  • This valve insert 30 serves as a check valve.
  • An air supply channel 32 is provided downstream of the valve insert 30 and supplies the air to the two screws 16, 18.
  • an air outlet pipe 34 with a riser 36 is provided on the output side of the two screws 16, 18.
  • a temperature sensor 38 is provided, by means of which the oil temperature can be monitored.
  • a holder 40 for an air oil separator 42 is also provided in the air outlet area.
  • the holder 40 for the air oil separator has in the area facing the floor (as also in FIG Fig. 1 shown) the air oil separator 42.
  • the holder for the air oil separator 40 has an air outlet opening 46 which lead to a check valve 48 and a minimum pressure valve 50.
  • the check valve 48 and the minimum pressure valve 50 can also be formed in a common, combined valve.
  • the air outlet 51 is provided downstream of the check valve 48.
  • the air outlet 51 is usually connected to correspondingly known compressed air consumers.
  • a riser 52 is provided which has a filter and check valve 54 at the exit of the holder 40 for the air oil separator 42 when it passes into the housing 20.
  • a nozzle 56 is provided in a housing bore downstream of the filter and check valve 54.
  • the oil return line 58 leads back approximately to the middle area of the screw 16 or the screw 18 in order to supply oil 22 again.
  • An oil drain plug 59 is provided in the bottom area of the housing 20 in the assembled state. Via the oil drain screw 59, a corresponding oil drain opening are opened through which the oil 22 can be drained.
  • the housing 20 In the lower area of the housing 20 there is also the extension 60 to which the oil filter 62 is attached.
  • the oil 22 is first fed to a thermostatic valve 66 via an oil filter inlet channel 64 which is arranged in the housing 20.
  • thermostat valve 66 a control and / or regulating device can be provided, by means of which the oil temperature of the oil 22 located in the housing 20 can be monitored and adjusted to a setpoint value.
  • a nozzle 72 is also provided, which is provided in the housing 20 in connection with the return line 68.
  • the cooler 74 is connected to the extension 60.
  • a safety valve 76 In the upper area of the housing 20 (in relation to the assembled state) there is a safety valve 76, by means of which excess pressure in the housing 20 can be reduced.
  • a bypass line 78 which leads to a relief valve 80, is located upstream of the minimum pressure valve 50. Air can be fed back into the area of the air inlet 28 via this relief valve 80, which is controlled by means of a connection to the air supply 32.
  • a vent valve (not shown in more detail) and also a nozzle (diameter reduction of the supply line) can be provided in this area.
  • an oil level sensor 82 can be provided approximately at the level of the line 34 in the outer wall of the housing 20.
  • This oil level sensor 82 can be, for example, an optical sensor and can be constructed and set up such that it can be recognized on the basis of the sensor signal whether the oil level is above the oil level sensor 82 during operation or whether the oil level sensor 82 is exposed and the oil level has fallen accordingly as a result.
  • an alarm unit can also be provided that outputs or forwards a corresponding error message or warning message to the user of the system.
  • the function of the in Fig. 1 shown screw compressor 10 is as follows: Air is supplied via the air inlet 28 and reaches the screws 16, 18 via the check valve 30, where the air is compressed. The compressed air-oil mixture, which rises with a factor of between 5 and 16 times compression after the screws 16 and 18 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 guided via the holder 40 into the air-oil separator 42 and, if the corresponding minimum pressure is reached, reaches the air outlet line 51.
  • the oil 22 located 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 switched on.
  • the corresponding connection takes place via the thermostatic valve 68.
  • oil is fed to the screw 18 or the screw 16, but also to the bearing 72, via the line 68.
  • the screw 16 or the screw 18 is supplied with oil 22 via the return line 52, 58; here the oil 22 is purified in the air-oil separator 42.
  • the screws 16 and 18 of the screw compressor 10 are driven by the electric motor, not shown in detail, which transmits its torque via the shaft 14 to the screw 16, which in turn meshes with the shaft 18.
  • the relief valve 80 ensures that in the area of the supply line 32, the high pressure that prevails in the operating state, for example on the outlet side of the screws 16, 18, cannot be locked in, but that especially when the compressor starts up in the area of the supply line 32 there is a low inlet pressure, in particular atmospheric pressure. Otherwise, when the compressor starts up, a very high pressure would initially arise on the output side of the screws 16 and 18, which would overload the drive motor.
  • FIG. 2 shows the screw compressor 10 according to FIG Fig. 1 in a sectional view with a view of the interior of the housing 20 of the screw compressor 10.
  • a baffle plate 100 is arranged in the interior of the housing 20 and is located essentially at the level of the upper level of the oil sump of the oil 22. This is based on the assembled state and a horizontal arrangement of the upper level of the oil sump.
  • the housing 20 has a housing cover 20b and a rotor housing 20a.
  • An air-oil separator inlet 102 which is connected to the air-oil separator 42, is located in the housing cover 20b.
  • a seal 104 is provided between the housing cover 20b and the rotor housing 20a, which is circumferentially guided between the edges of the housing cover 20b and rotor housing 20a in the assembled state and is clamped and screwed sealingly between them.
  • the seal 104 has screw bolt through openings 106 through which corresponding screw connections are passed by means of screw bolts can, so that seal 104, housing cover 20b and rotor housing 20a can be screwed to one another or are screwed to one another in the assembled state.
  • the seal 104 is arranged between the housing cover 20b and the rotor housing 20a and protrudes from the oil sump of the oil 22.
  • the seal 104 is designed as a sealing plate and has several through openings 108.
  • the passage openings 108 are circular and are regularly offset from one another in the manner of a perforated plate in the area of the seal 104 located above the oil sump.
  • the seal 104 divides the interior of the housing asymmetrically into at least one first area B1, which essentially relates to the inner areas of the housing cover 20b, and a second area B2, which essentially relates to the interior of the rest of the housing 20, that is to say the rotor housing 20a.
  • the first area B1 is smaller than the second area B2.
  • the air oil separator inlet 102 opens into the first region B1 and is located in the vicinity of the passage openings 108 of the seal 104.
  • the seal 104 is arranged vertically in relation to the assembled state when the screw compressor 10 is oriented essentially horizontally and the oil sump 22 is oriented essentially horizontally.
  • seal 104 has a passage opening 110 for the baffle 100 at the level of the upper level of the oil sump of the oil 22.
  • the baffle plate 100 has a plurality of oil passage openings, which are designed as elongated slots.
  • the baffle plate 100 and the seal 104 divide the interior of the screw compressor 10 into a plurality of interconnected compartments K1, K2, K3 and K4.
  • the compartments K2 and K3 are the compartments K2 and K3 in which the oil sump of the oil 22 is located.
  • the compartment K1 is located in the area B1 and the compartment K4 is located in the area B2.
  • the seal 104 and the baffle plate 100 are plugged into one another and are arranged in a cross manner to one another.
  • the seal 104 and baffle plate 100 are arranged essentially perpendicular to one another.
  • the function of the seal 104 and its passage openings 108 can be described as follows: During operation, the screws 16 and 18 are lubricated by pressurized oil from the oil 22 from the oil sump, so that oil vapors, small oil droplets or oil aerosols are present above the upper level of the oil sump. Further oil movements are forced by the driving movements of the utility vehicle, so that the movement of the oil 22 and the movement possibilities of the oil 22 are restricted by means of the baffle 100 and also the seal 104. At the same time, however, the through openings 108 both in the baffle plate 100 and in the seal 104 ensure that sufficient oil 22 can reach all areas of the screw compressor 10 in the form of small oil droplets, oil vapors or oil aerosols.
  • the oil entry into the air-oil separator inlet 102 is reduced. This takes place through the passage openings 108 of the seal 104, since less oil 22 can reach the air-oil separator inlet 102 due to the perforated plate-like structure of the seal 104. As a result, the entry of oil into the air oil separator 42 is reduced.
  • the arrangement of the seal 104 and baffle plate 100 also has the function that horizontal surge movements can also be prevented or reduced.
  • Baffle plate 100 and seal 104 thus act as a blockade against horizontal surge movements, in particular in the direction of air-oil separator inlet 102, and thus limit the entry of oil into air-oil separator 42.

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

Claims (14)

  1. Compresseur (10) à vis pour un véhicule utilitaire, comprenant au moins un carter (20) ayant au moins un couvercle (20b) de carter et au moins une enveloppe (20a) de rotor, au moins un brise-flot (100) et au moins une étanchéité (104), dans lequel, dans l'état monté dans le carter (20), il y a un puisard d'huile, dans lequel, rapportée à l'état monté, l'étanchéité (104) est disposée entre le couvercle (20b) du carter et l'enveloppe (20a) du rotor et dans lequel le brise-flot (100), rapporté à l'état monté, alors que le compresseur (10) à vis est dans la direction horizontale et alors que le puisard d'huile est dans la direction horizontale, est dirigé sensiblement parallèlement au niveau supérieur du puisard à huile, caractérisé en ce que l'étanchéité dépasse du puisard à huile, l'étanchéité séparant l'un de l'autre, au moins en partie, l'intérieur du couvercle (20b) du carter de l'intérieur de l'enveloppe (20a) du rotor.
  2. Compresseur (10) à vis suivant la revendication 1,
    caractérisé en ce que
    le brise-flot (100) a au moins une, notamment plusieurs ouvertures de passage d'huile.
  3. Compresseur (10) à vis suivant la revendication 1 ou la revendication 2,
    caractérisé en ce que
    le brise-flot (100) et l'étanchéité (104) subdivisent l'intérieur du compresseur (10) à vis en plusieurs compartiments (K1, K2, K3, K4) communiquant les uns avec les autres.
  4. Compresseur (10) à vis suivant l'une des revendications précédentes,
    caractérisé en ce que
    l'étanchéité (104) subdivise l'intérieur dissymétriquement en au moins une première région (B1) et au moins une deuxième région (B2), la première région (B1) étant plus petite que la deuxième région (B2).
  5. Compresseur (10) à vis suivant l'une des revendications précédentes,
    caractérisé en ce que
    le compresseur (10) à vis a un séparateur (42) d'huile et d'air et une arrivée (102) au séparateur d'huile et d'air, l'arrivée (102) au séparateur d'huile et d'air débouchant à l'intérieur du compresseur (10) à vis et des ouvertures de passage de l'étanchéité (104) sont disposées à proximité de l'arrivée (102) du séparateur d'huile et d'air.
  6. Compresseur (10) à vis suivant la revendication 5,
    caractérisé en ce que
    l'arrivée (102) du séparateur d'huile et d'air est constituée dans le couvercle (20b) du carter.
  7. Compresseur (10) à vis suivant la revendication 4 et l'une des revendications 5 ou 6,
    caractérisé en ce que
    l'arrivée (102) du séparateur d'huile et d'air débouche dans la première région de l'intérieur.
  8. Compresseur (10) à vis suivant l'une des revendications précédentes,
    caractérisé en ce que,
    rapportée à l'état monté, alors que le compresseur (10) à vis est dirigé horizontalement et que le puisard d'huile est dirigé horizontalement, l'étanchéité (104) est disposée verticalement.
  9. Compresseur (10) à vis suivant l'une des revendications précédentes,
    caractérisé en ce que
    les ouvertures de passage sont arrondies, notamment circulaires.
  10. Compresseur (10) à vis suivant l'une des revendications précédentes,
    caractérisé en ce que
    l'étanchéité (104) est constituée, au moins par endroit, sous la forme d'une plaque perforée avec les régions se trouvant à l'état monté à l'intérieur.
  11. Compresseur (10) à vis suivant l'une des revendications précédentes,
    caractérisé en ce que
    l'étanchéité (104) a une ouverture de passage de brise-flot.
  12. Compresseur (10) à vis suivant l'une des revendications précédentes,
    caractérisé en ce que
    l'étanchéité (104) et le brise-flot (100) sont enfichés l'un dans l'autre.
  13. Compresseur (10) à vis suivant l'une des revendications précédentes,
    caractérisé en ce que
    l'étanchéité (104) et le brise-flot (100) sont disposés en croix l'un par rapport à l'autre.
  14. Compresseur (10) à vis suivant l'une des revendications précédentes,
    caractérisé en ce que
    l'étanchéité (104) et le brise-flot (100) sont disposés perpendiculairement l'un à l'autre.
EP17778213.3A 2016-09-21 2017-09-19 Compresseur à vis pour véhicule utilitaire Active EP3516226B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016011393.6A DE102016011393A1 (de) 2016-09-21 2016-09-21 Schraubenkompressor für ein Nutzfahrzeug
PCT/EP2017/073550 WO2018054865A1 (fr) 2016-09-21 2017-09-19 Compresseur à vis pour véhicule utilitaire

Publications (2)

Publication Number Publication Date
EP3516226A1 EP3516226A1 (fr) 2019-07-31
EP3516226B1 true EP3516226B1 (fr) 2020-09-09

Family

ID=60009594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17778213.3A Active EP3516226B1 (fr) 2016-09-21 2017-09-19 Compresseur à vis pour véhicule utilitaire

Country Status (8)

Country Link
US (1) US11268513B2 (fr)
EP (1) EP3516226B1 (fr)
JP (1) JP6733057B2 (fr)
KR (1) KR102271219B1 (fr)
CN (1) CN109906316B (fr)
BR (1) BR112019005072A2 (fr)
DE (1) DE102016011393A1 (fr)
WO (1) WO2018054865A1 (fr)

Citations (1)

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IT1309299B1 (it) * 1999-06-23 2002-01-22 Samputensili Spa Compressore rotativo a vite per gas refrigerante da utilizzare in unimpianto di condizionamento o refrigerazione di piccola potenza.
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JP2002295383A (ja) 2001-03-30 2002-10-09 Hokuetsu Kogyo Co Ltd スクリュ圧縮機
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Also Published As

Publication number Publication date
JP6733057B2 (ja) 2020-07-29
BR112019005072A2 (pt) 2019-06-04
KR20190045945A (ko) 2019-05-03
JP2019529800A (ja) 2019-10-17
CN109906316B (zh) 2020-09-15
EP3516226A1 (fr) 2019-07-31
US11268513B2 (en) 2022-03-08
US20210010475A1 (en) 2021-01-14
KR102271219B1 (ko) 2021-06-30
DE102016011393A1 (de) 2018-03-22
WO2018054865A1 (fr) 2018-03-29
CN109906316A (zh) 2019-06-18

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