EP3715637B1 - Compressor inlet adjustment mechanism - Google Patents

Compressor inlet adjustment mechanism Download PDF

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Publication number
EP3715637B1
EP3715637B1 EP19165123.1A EP19165123A EP3715637B1 EP 3715637 B1 EP3715637 B1 EP 3715637B1 EP 19165123 A EP19165123 A EP 19165123A EP 3715637 B1 EP3715637 B1 EP 3715637B1
Authority
EP
European Patent Office
Prior art keywords
geared
bearing pin
compressor
orifice
actuation system
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
EP19165123.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3715637A1 (en
Inventor
Aleksandar VULETIC
Jason WALKINGSHAW
Sascha KARSTADT
Oliver Weber
Alexander Sperle
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.)
BorgWarner Inc
Original Assignee
BorgWarner Inc
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 BorgWarner Inc filed Critical BorgWarner Inc
Priority to EP19165123.1A priority Critical patent/EP3715637B1/en
Priority to CN201920551923.4U priority patent/CN210889464U/zh
Priority to CN201910344048.7A priority patent/CN111749928A/zh
Priority to US16/814,389 priority patent/US20200309141A1/en
Publication of EP3715637A1 publication Critical patent/EP3715637A1/en
Application granted granted Critical
Publication of EP3715637B1 publication Critical patent/EP3715637B1/en
Active legal-status Critical Current
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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/009—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by bleeding, by passing or recycling fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0253—Surge control by throttling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
    • F04D29/464—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps adjusting flow cross-section, otherwise than by using adjustable stator blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet

Definitions

  • This disclosure relates to an adjustment mechanism for adjusting the cross-section of a compressor inlet. Furthermore, the invention relates to an adjustment assembly, a compressor and a charging apparatus having such an adjustment mechanism.
  • the individual mobility sector is experiencing a disruptive change.
  • the increasing number of electric vehicles entering the market and stricter emission regulations of legislators demand higher efficiencies from traditional internal combustion engine ICE vehicles. Therefore, more and more vehicles are equipped with efficiency increasing measures, such as charging apparatuses and emission reduction devices.
  • charging apparatuses wherein a compressor may be driven by an e-motor (e-charger) and/or an exhaust gas powered turbine (turbocharger).
  • Common compressors thereby comprise a compressor housing and a compressor wheel which is arranged in the housing. In operation, air is sucked through a compressor inlet of the housing to get accelerated and compressed by the compressor wheel and then exits the compressor via a volute of the compressor housing.
  • Each compressor has its characterizing compressor map defining its operating range. This operating range is mainly bound by the surge line and the choke line in the compressor map.
  • compressor inlet adjustment mechanisms are configured, for instance, to increase the speed of the air flow, to modify the flow angle or to establish a flow path recirculation.
  • compressor inlet adjustment mechanisms are configured, for instance, to increase the speed of the air flow, to modify the flow angle or to establish a flow path recirculation.
  • An exemplary variable valve for controlling airflow to an engine including an outer finger element moved by an actuator is known from US 2009/095350 A1 .
  • the objective of the present invention is to provide an improved compressor inlet adjustment mechanism.
  • the present invention relates to an adjustment mechanism as set out in claim 1. Furthermore, the present invention relates to a corresponding adjusting assembly, a compressor and a corresponding charging apparatus each including such an adjustment mechanism as set out in claims 5, 14 and 15, respectively. Other embodiments are described in the dependent claims.
  • the inventive adjustment mechanism for variably adjusting the cross-section of a compressor inlet comprises a plurality of rotatable orifice elements and a transmission ring.
  • Each orifice element has a plate body, a coupling element and a bearing pin.
  • the transmission ring is mechanically coupled to the plurality of orifice elements via the coupling elements.
  • One of the orifice elements is configured as a drive orifice element.
  • the bearing pin of the drive orifice element is configured as an elongated bearing pin.
  • the elongated bearing pin is configured longer than the bearing pins of the other orifice elements.
  • the elongated bearing pin is adapted to be coupled to an actuation system such that when the drive orifice element is moved by the actuation system, movement is transmitted from the drive orifice element via the transmission ring to the other orifice elements.
  • the coupling element of the drive orifice element in turn interacts with the transmission ring such that the transmission ring is rotated.
  • the inventive configuration of the adjustment mechanism results in a different force flow in comparison to known adjustment mechanisms.
  • the actuation force is led from an actuation system directly into the drive orifice element via rotation of the elongated bearing pin. Thereby the drive orifice element together with its coupling element can be pivoted.
  • the coupling element of the drive orifice element in turn interacts with the transmission ring such that the transmission ring is rotated. Via the transmission ring force is transmitted from the drive orifice element to the other orifice elements thereby causing pivoting movement of the orifice elements to adjust the cross-section of a compressor inlet.
  • the orifice elements are circumferentially distributed along the transmission ring.
  • the orifice elements may be configured and arranged such that they can contact respective adjacent orifice elements in a circumferential direction. Thereby, for instance the drive orifice element can push adjacent orifice elements during movement additionally to the force transmission through the transmission ring.
  • the orifice elements being adjacent to the drive orifice element can in turn push respective adjacent orifice elements.
  • the bearing pin is arranged further radially outside on the respective orifice element than the coupling element.
  • the bearing pin is arranged further radially outside on the plate body than the coupling element.
  • the coupling element is arranged in a radial middle portion of the respective orifice element.
  • the bearing pin is arranged in a radial outer portion of the respective orifice element.
  • the bearing pin is arranged at a radial outer end of the respective orifice element.
  • an increasing distance between the coupling element and the respective bearing pin of one orifice element leads to a reduced relative movement between each coupling element and the transmission ring. Furthermore, by arranging the bearing pin radially outside the coupling element, i.e. farther away from the compressor axis in a radial outside direction, less rotation of the whole orifice element is required for moving the plate body between an opened and a closed position. This also results in less wear.
  • the coupling element and the bearing pin may protrude directly from the plate body of the respective orifice element in an axial direction.
  • the coupling element and the bearing pin are integrally formed with the plate body.
  • each orifice element may have an upstream surface and a downstream surface.
  • the upstream surface points in a first axial direction to an upstream side.
  • the downstream surface points in a second axial direction to a downstream side opposite the first axial direction.
  • the coupling elements may extend from the upstream surface in the first axial direction.
  • the coupling elements may extend from the downstream surface in the second axial direction.
  • the transmission ring may be arranged axially adjacent the upstream surfaces or axially adjacent the downstream surfaces.
  • the coupling elements and the transmission ring may be arranged on the same of one of the upstream side or the downstream side.
  • the elongated bearing pin may always arranged on the upstream side.
  • the elongated bearing pin may extend from the upstream surface in the first axial direction.
  • the bearing pins of the other orifice elements may extend from the upstream surface in the first axial direction.
  • the bearing pins of the other orifice elements extend from the downstream surface in the second axial direction.
  • the transmission ring may have a plurality of circumferentially arranged recesses.
  • Each coupling element may be operatively coupled to one respective recess.
  • each recess may have a longitudinal shape extending in a substantially radial direction. Thereby, each coupling element can slide within the respective recess in a radial direction. Furthermore, movement between the transmission ring and the orifice elements can be transmitted in a circumferential direction.
  • the adjustment mechanism may further comprise a housing portion. Additionally, the housing portion may have a bore. Additionally, the elongated bearing pin may extend through the bore to be coupled to the actuation system outside the housing portion. Additionally, the housing portion may be an inlet port of a compressor defining the compressor inlet.
  • the present invention further relates to an adjustment assembly for variably adjusting the cross-section of a compressor inlet.
  • the adjustment assembly comprises an adjustment mechanism of any one of the previous aspects.
  • the adjustment assembly comprises an actuation system.
  • the actuation system is configured to actuate the drive orifice element. That means the drive orifice element is operatively coupled to the actuation system.
  • the actuation system may comprise a drive unit.
  • the drive unit is configured as a rotatory drive unit.
  • a first geared structure may be arranged in a first end portion of the elongated bearing pin.
  • the adjustment assembly may further comprise a first geared element.
  • the first geared element may be arranged at the first end portion and may comprise the first geared structure.
  • the first geared element may be attached in a rotationally fixed manner to the first end portion.
  • the first geared structure may be arranged on a radial surface of the elongated bearing pin or on a radial surface of the geared element, i.e. a surface pointing in a radial direction with respect to the elongated bearing pin.
  • a length of the geared element in a radial direction with respect to the elongated bearing pin may be configured to place the actuation system closer or further away from the elongated bearing pin. In other words, by providing the first geared element a distance between the actuation system and the elongated bearing pin and/or the housing portion can be adjusted.
  • the first geared structure can either be provided directly in the elongated bearing pin or in an additional element, i.e. the first geared element. If the first geared structure is directly formed on the elongated bearing pin, the first geared structure may optionally be arranged in a geared recess of the elongated bearing pin. The geared recess may be formed in an end face of the elongated bearing pin. Thereby the actuation system can directly be coupled to the elongated bearing pin in a very compact fashion. The actuation system can be arranged closer to the housing portion. Consequently, a more compact device can be provided.
  • the first geared structure may extend at least along an arc length of a circular sector.
  • the circular sector may be defined by a central angle ⁇ 1 between 5° to 360°, preferably between 10° to 60°and in particular between 15° and 45°. By adapting the central angle ⁇ 1 smaller than 360° no full rotation is required. Furthermore, the manufacturing costs can be reduced as a smaller area needs to be provided in a geared configuration.
  • the adjustment assembly may further comprise a second geared structure.
  • the second geared structure may be formed complementary to the first geared structure and may be operatively coupled to the drive unit. Furthermore, the second geared structure may be engagingly coupled to the first geared structure in order to rotate the elongated bearing pin.
  • the actuation system may comprise the second geared structure.
  • the adjustment assembly may further comprise a rotatable drive shaft. The rotatable drive shaft may be operatively coupled to the drive unit. That means the actuation system may comprise the rotatable drive shaft. Additionally, the second geared structure may directly be formed on the rotatable drive shaft.
  • the second geared structure may directly be formed in a second shaft end portion of the rotatable drive shaft. If the second geared structure is directly formed on the rotatable drive shaft, the second geared structure may optionally be arranged in a geared recess of the rotatable drive shaft. The geared recess may be formed in a shaft end face of the rotatable drive shaft.
  • the actuation system can directly be coupled to the elongated bearing pin in a very compact fashion. The actuation system can be arranged closer to the housing portion. Consequently, a more compact device can be provided.
  • the adjustment assembly i.e.
  • the actuation system may further comprise a second geared element which comprises the second geared structure.
  • the second geared element may operatively be coupled to the drive unit.
  • the second geared element may be arranged on the rotatable drive shaft.
  • the second geared element may be arranged in a second shaft end portion of the rotatable drive shaft.
  • the second geared element can be operatively coupled to the drive unit via the rotatable drive shaft.
  • the second geared element may be attached to the rotatable drive shaft in a rotationally fixed manner.
  • the second geared structure may extend at least along an arc length of a circular sector.
  • the circular sector may be defined by a central angle ⁇ 2 between 5° to 360°, preferably between 10° to 60°and in particular between 15° and 45°.
  • the second geared element is configured as a gear rack.
  • the present invention further relates to a compressor of a charging apparatus.
  • the compressor comprises a compressor housing, an impeller and an adjustment assembly of any one of the previous aspects.
  • the compressor housing defines a compressor inlet and a compressor outlet.
  • the impeller is rotatably mounted in the compressor housing between the compressor inlet and the compressor outlet.
  • the adjustment mechanism comprises a housing portion
  • the housing portion is part of the compressor housing.
  • the housing portion forms the compressor inlet.
  • the housing portion serves as inlet port of the compressor.
  • the housing portion may be attached to the compressor housing.
  • the housing portion may be arranged upstream of the impeller.
  • the present invention further relates charging apparatus.
  • the charging apparatus comprises a compressor drive unit and a compressor of any one of the previous aspects.
  • the compressor is rotationally coupled to the compressor drive unit via a shaft.
  • the compressor drive unit may comprise a turbine. Additionally or alternatively the compressor drive unit may comprise an electric motor.
  • the expressions axially, axial or axial direction is meant to be a direction parallel of or along an axis, i.e. rotational axis, of the transmission ring.
  • the axial direction also substantially coincides with an axis of the compressor, i.e. with a rotation axis of the compressor wheel.
  • an axial dimension is described with reference sign 22
  • a radial dimension extending "radially" away from the axial dimension 22 is described with reference sign 24.
  • a circumferential dimension around the axial dimension 22 is described with reference sign 26. If an axial, radial or circumferential directions/dimension is to be understood in another way than just described it is explicitly indicated (e.g. radially from an axis of the elongated bearing pin).
  • Fig. 1 schematically illustrates the inventive charging apparatus 400 having a compressor 300 and a compressor drive unit 410.
  • the compressor 300 is rotationally coupled to the compressor drive unit 410 via a shaft 420.
  • the compressor drive unit 410 is configured as an exhaust gas turbine.
  • the compressor drive unit 410 can be configured as an electric motor or may be configured as a combination of an exhaust gas turbine and an electric motor.
  • the compressor 300 comprises a compressor housing 310 and an impeller 320.
  • the compressor housing 310 defines a compressor inlet 312 and a compressor outlet 314.
  • the impeller 320 is rotatably mounted in the compressor housing 310 between the compressor inlet 312 and the compressor outlet 314.
  • the compressor 300 comprises an adjustment assembly 30.
  • the adjustment assembly 30 comprises an adjustment mechanism 10 and an actuation system 230.
  • the adjustment mechanism 10 for variably adjusting the cross-section 312a of a compressor inlet 312 will be explained in further detail.
  • the adjustment mechanism 10 comprises a plurality of rotatable orifice elements 100, 100' and a transmission ring 210.
  • Each orifice element 100, 100' has a plate body 130, a coupling element 110 and a bearing pin 120, 120'.
  • the transmission ring 210 is mechanically coupled to the plurality of orifice elements 100, 100' via the coupling elements 110 (see in particular FIG. 2B ).
  • One of the orifice elements 100, 100' is configured as a drive orifice element 100'.
  • the bearing pin 120' of the drive orifice element 100' is configured as an elongated bearing pin 120'.
  • the elongated bearing pin 120' is configured longer than the bearing pins 120 of the other orifice elements 100.
  • the elongated bearing pin 120' is adapted to be coupled to an actuation system 230 (not depicted here, see adjustment assembly 30, e.g., FIG. 4B or 5A ) such that when the drive orifice element 100' is moved by the actuation system 230, movement is transmitted from the drive orifice element 100' via the transmission ring 210 to the other orifice elements 100.
  • the length of the elongated bearing pin 120' is adapted long enough to be coupled to the actuation system 230.
  • the inventive configuration of the adjustment mechanism 10 results in a different force flow in comparison to known adjustment mechanisms.
  • the actuation force is led from an actuation system 230 directly into the drive orifice element 100' via rotation of the elongated bearing pin 120'.
  • the drive orifice element 100' together with its coupling element 110 can be pivoted.
  • the drive orifice element 100' can be pivoted around the axis of the elongated bearing pin 120'.
  • the coupling element 110 of the drive orifice element 100' in turn interacts with the transmission ring 210 such that the transmission ring 210 is rotated.
  • FIGS. 3A and 3B show the opened state of the adjustment mechanism 10 in which the orifice elements 100, 100' are pivoted radially outside, i.e.
  • FIG. 3A shows the closed state of the adjustment mechanism 10 in which the orifice elements 100, 100' are pivoted radially inside, i.e. radially towards from the center of the transmission ring 210.
  • the orifice elements 100, 100' i.e. their respective plate bodies 130 can block a radial outer portion of the cross-section 312a of the compressor inlet 312 and thereby reduce the cross-section 312a.
  • FIG. 7 which more clearly depicts this functionality as it shows the adjustment mechanism 10 mounted in a compressor housing 310.
  • the orifice elements 100, 100' block a portion of the compressor inlet 312 and thereby reduce the cross-section 312a of the compressor inlet 312.
  • the orifice elements 100, 100' are distributed along the transmission ring 210 in a circumferential direction 26.
  • the orifice elements 100, 100' are configured and arranged such that they contact respective adjacent orifice elements 100, 100' in a circumferential direction 26.
  • the physical contact enables the possibility that the drive orifice element 100' can push adjacent orifice elements 100 during movement. This "direct push movement" can be exerted on adjacent orifice elements 100 additionally to the force transmission through the transmission ring 210.
  • Those orifice elements 100 being adjacent to the drive orifice element 100' can in turn push respective adjacent orifice elements 100.
  • each orifice element 100, 100' comprises a radial middle portion 136, a radial outer portion 138 and a radial outer end 138a.
  • the radial middle portion 136 is a portion of the plate body 130 which is located in a radial middle area of the plate body 130 when the adjustment mechanism 10 is in the closed state.
  • the radial outer portion 138 is a portion of the plate body 130 which is located in a radial outer area of the plate body 130 when the adjustment mechanism 10 is in the closed state.
  • the radial outer end 138a is a portion of the plate body 130 which is located in a radial outer end of the plate body 130 when the adjustment mechanism 10 is in the closed state.
  • the respective portions 138, 138 and the end 138a correspondingly move too but remain fixed with respect to the respective plate body 130.
  • Each respective bearing pin 120, 120' is arranged at the radial outer end 138a of the respective orifice element 100, 100' (see, e.g., FIG. 3B ).
  • Each respective coupling element 110 is arranged in the radial middle portion 136 of the respective orifice element 100, 100' (see, e.g., FIG. 2B ).
  • the bearing pin 120, 120' can also be arranged in a radial outer portion 138 of the respective orifice element 100, 100 and need not be arranged exactly at the radial outer end 138a.
  • the bearing pin 120, 120' is preferentially arranged further radially outside on the respective orifice element 100, 100' than the coupling element 110.
  • an increasing distance between the coupling element 110 and the respective bearing pin 120, 120' of a respective orifice element 100, 100' leads to a reduced relative movement between each coupling element 110 and the transmission ring 210.
  • the bearing pin 120, 120' radially outside the coupling element 110, i.e. farther away from the compressor axis in a radial outside direction 24, less rotation of the whole orifice element 100, 100' is required for moving the plate body 130 between an opened closed and a closed position. This also results in less wear, in particular less wear of the bearing pin 120, 120'.
  • each orifice element 100, 100' has an upstream surface 132 and a downstream surface 134. More specifically, each plate body 130 of the respective orifice element 100, 100' has an upstream surface 132 and a downstream surface 134.
  • the upstream surface 132 points in a first axial direction 22a to an upstream side 132a of the adjustment mechanism 10.
  • the downstream surface 134 points in a second axial direction 22b to a downstream side 134a of the adjustment mechanism 10 opposite the first axial direction 22a.
  • the first axial direction 22a extends opposite the second axial direction 22b.
  • the upstream side 132a and the downstream side 134a are defined by means of the flow direction of fluids through the compressor in the assembled state of the adjustment mechanism in a compressor 300 during operation. Therefore, see additionally FIG. 7 which shows the adjustment mechanism 10 assembled in a compressor housing 310 clarifying the upstream side 132a and downstream side 134a also with respect to the adjustment mechanism 10.
  • the coupling element 110 and the bearing pin 120, 120' directly protrude from the plate body 130 of the respective orifice element 100, 100' generally in an axial direction 22.
  • the bearing elements 120, 120' extend in the first axial direction 22a from the plate body 130 of the respective orifice element 100, 100'.
  • the coupling element 110 and the bearing pin 120, 120' are integrally formed with the respective plate body 130 of one orifice element 100, 100'.
  • the coupling elements 110 extend in the second axial direction 22b from the plate body 130 of the respective orifice element 100, 100'.
  • the transmission ring 210 is arranged axially adjacent the downstream surfaces 134 of the orifice elements 100, 100'.
  • the transmission ring 210 is arranged axially adjacent the downstream surfaces 134 of the plate bodies 130.
  • the transmission ring 210 has a plurality of circumferentially arranged recesses 212 (see FIGS. 2B and 3B ).
  • Each coupling element 110 is operatively coupled to one respective recess 212.
  • Each recess 212 has a longitudinal shape extending in a substantially radial direction 22. Thereby, each coupling element 110 can slide within the respective recess 212 in a radial direction 22.
  • the coupling elements 110 engage with a respective recess 212. That means the transmission ring 210 needs to be arranged on the same side of the plate body 130 as the coupling elements 110.
  • the coupling elements 110 may extend from the upstream surface 132 in the first axial direction 22a (not depicted).
  • the transmission ring 210 may also be arranged axially adjacent the upstream surface 132 of the plate bodies 130.
  • the transmission ring 210 and the coupling elements 110 are arranged axially adjacent the downstream side 134 as this may lead to a good stability of the adjustment mechanism 10 during movement. Arranging the transmission ring 210 and the coupling elements 110 on the upstream side 132a may lead to a more compact device.
  • the elongated bearing pin 120' must always be arranged on the upstream side 132a. In other words, the elongated bearing pin 120' must always extend from the upstream surface 132 in the first axial direction 22a. Thereby an easy accessibility to the actuation system 230 can be achieved. However, in alternative embodiments, some or all of the bearing pins 120 of the other orifice elements 100 can extend from the downstream surface 134 in the second axial direction 22b. In embodiments where some or all of the bearing pins 120, 120' are arranged on the same side of the plate body 130 as the transmission ring 210, the respective bearing pins need to be arranged radially outside the transmission ring 210. Bearing pins 120, 120' which are arranged on an opposite site of the plate body 130 than the transmission ring 210 do not necessarily be arranged radially outside the transmission ring 210.
  • the adjustment mechanism 10 further comprises a housing portion 220 with an inlet portion 226 and a flange portion 228.
  • the housing portion 220 may serve as an inlet port for the compressor 300 and defines the compressor inlet 312.
  • the housing portion 220 comprises a bore 222 which is configured to receive the elongated bearing pin 120'.
  • the bore 222 extends through the flange portion 228 in the axial direction 22. Described in other words, the elongated bearing pin 120' extends through the bore 222 to be coupled to the actuation system 230 outside the housing portion 220.
  • a bushing (not depicted) may be arranged in the bore 222 and may rotatably support the elongated bearing pin 120'.
  • FIGS. 5B and 7 show that the housing portion 220 further comprises a plurality of circumferentially distributed bearing bores 224.
  • the bearing bores 224 receive the bearing pins 120.
  • the bearing pins 120 are oriented in the opposite direction, i.e. if the bearing pins 120 extend from the body plates 130 in the second axial direction 22b, no bearing bores 224 may be provided in the housing portion 220. Instead, respective bearing bores 224 may be directly provided in the compressor housing 310.
  • an additional bearing ring (not depicted) with a plurality of circumferentially distributed bearing bores 224 may be provided between the compressor housing 310 and the orifice elements 100, 100' or between the housing portion 220 and the orifice elements 100, 100' to support the bearing pins 120 of the orifice elements 100.
  • the present invention further relates to an adjustment assembly 30 for variably adjusting the cross-section 312a of a compressor inlet 312 (see FIG. 4A ).
  • the adjustment assembly 30 comprises the adjustment mechanism 10 with the housing portion 220. Additionally, the adjustment assembly 30 comprises an actuation system 230, which is schematically depicted in FIGS. 4A to 5B .
  • the actuation system 230 is configured to actuate the drive orifice element 100'. That means the drive orifice element 100' is operatively coupled to the actuation system 230.
  • the actuation system 230 comprises a drive unit 234 which is also merely schematically depicted.
  • the drive unit 234 is configured as a rotatory drive unit. That means it generates a rotatory drive movement.
  • the drive unit 234 may be configured as a translational drive unit, i.e. generating a translational drive movement.
  • the actuation system 230 comprises a gear rack which will be explained further below.
  • the actuation system 230 is depicted distanced from and not coupled to the drive orifice element 100' in FIGS. 4A and 4B . Thereby the function of the drive orifice element 100' becomes more clear.
  • FIG. 4B it can be seen that the elongated bearing pin 120'extends through the housing portion 220.
  • the actuation system 230 in the assembled state, is coupled, i.e. physically coupled, to the drive orifice element 100' (see FIGS. 5A and 5B ).
  • the actuation system 230 is directly coupled to the elongated bearing pin 120'. Therefore, the actuation system 230 is arranged on the elongated bearing pin 120'. Described in other words, the elongated bearing pin 120' extends into the actuation system 230.
  • the actuation system 230 is arranged directly at housing portion 220. This configuration results in an extremely compact assembly.
  • the adjustment assembly can additionally comprise a sealing 250 which is arranged between the housing portion 220 and the elongated bearing pin 120'.
  • This sealing 250 can, for instance, be configured as a sealing ring.
  • the actuation system 230 is mounted to the housing portion 220.
  • the sealing 250 is arranged between the actuation system 230 and the housing portion 220.
  • the actuation system 230 need not be mounted directly at the housing portion 220.
  • the sealing 250 may be arranged between the housing portion 220 and the elongated bearing pin 120' as described above.
  • the sealing 250 can be arranged in or at the bore 222.
  • the elongated bearing pin 120' comprises a first geared structure 142.
  • the first geared structure 142 can either be provided directly in the elongated bearing pin 120' (see FIGS. 9A and 9B ) or in an additional element, i.e. a first geared element 140 (see FIG. 9C ).
  • the first geared structure 142 When the first geared structure 142 is provided directly in the elongated bearing pin 120', it is arranged in a first end portion 122' of the elongated bearing pin 120'.
  • the first geared structure 142 may be configured as an external toothing (see FIG. 9A ) or an internal toothing (see FIG. 9B ).
  • the first geared structure 142 is arranged on a radial surface of the elongated bearing pin 120'. That means the first geared structure 142 is arranged on a surface of the elongated bearing pin 120' pointing in radial direction with respect to the rotation axis of the elongated bearing pin 120'.
  • the first geared structure 142 When the first geared structure 142 is configured as an external toothing, the first geared structure 142 is arranged on a radial outer surface of the elongated bearing pin 120'. In other words, the first geared structure 142 is arranged on a surface of the elongated bearing pin 120' pointing in radial outward direction of the rotation axis of the elongated bearing pin 120'. When the first geared structure 142 is configured as an internal toothing, the first geared structure 142 is arranged on a radial inner surface of the elongated bearing pin 120'.
  • the first geared structure 142 is arranged on a surface of the elongated bearing pin 120' pointing in radial inward direction of the rotation axis of the elongated bearing pin 120'. Therefore, the elongated bearing pin 120' may comprise a geared recess 146.
  • the geared recess 146 is formed in an end face 122a' of the elongated bearing pin 120'.
  • the first geared structure 142 is arranged in the geared recess 146.
  • FIG. 9C shows the adjustment assembly 30 comprising the first geared element 140.
  • the first geared element 140 is arranged at the first end portion 122' and comprises the first geared structure 142.
  • the first geared element 140 is attached in a rotationally fixed manner to the elongated bearing pin 120'.
  • the first geared element 140 is attached in a rotationally fixed manner to the first end portion 122'.
  • the first geared structure 142 is arranged on a radial surface of the first geared element 140, i.e. a surface pointing in a radial direction with respect to the rotation axis of the elongated bearing pin 120'.
  • a length of the first geared element 140 in a radial direction with respect to the rotation axis of the elongated bearing pin 120' may be configured to place the actuation system 230 closer or further away from the elongated bearing pin 120'.
  • a distance between the actuation system 230 and the elongated bearing pin 120' and/or the housing portion 220 can be adjusted. This enables a flexible placement of the actuation system 230 by adequately configuring the first geared element 140.
  • the possibility is provided to use different actuation systems 230, for instance actuation systems 230 of different sizes.
  • the first geared structure 142 extends only along an arc length 144a of a circular sector 144.
  • the circular sector 144 is defined by a central angle ⁇ 1 which is preferably between 10° to 60°. Alternatively, the central angle ⁇ 1 may lie somewhere between 5° to 360° and in particular between 15° and 45°.
  • the first geared structure 142 may alternatively also extend along the full circumference of the elongated bearing pin 120' or the first geared element 140.
  • the first geared element 140 may be substantially shaped in a circular sector 144 or may substantially comprise only the circular sector 144 (see FIG. 9C ). Alternatively, the first geared element 140 may be shaped circular (not depicted).
  • the adjustment assembly 30 comprises a second geared structure 242. More specifically, the actuation system 230 comprises the second geared structure 242. The second geared structure 242 is engagingly coupled to the first geared structure 142 in order to rotate the elongated bearing pin 120'. To achieve this, the second geared structure 242 is formed complementary to the first geared structure 142. Furthermore, the second geared structure 242 is operatively coupled to the drive unit 234. As depicted in FIGS. 10A to 10 C, the adjustment assembly 30 further comprises a rotatable drive shaft 232. More specifically, the actuation system 230 comprises the rotatably drive shaft 232. The rotatable drive shaft 232 is operatively coupled to the drive unit 234.
  • the second geared structure 242 may either be provided directly in the rotatable drive shaft 232 (see FIG. 10A ) or in an additional element, i.e. a second geared element 240 (see FIGS. 10B and 10C ).
  • the rotatable drive shaft 232 has a first shaft end portion 233 and a second shaft end portion 235.
  • the first shaft end portion 233 is coupled to the drive unit 230.
  • the second shaft end portion 235 is coupled to the elongated bearing pin 120'. More specifically, if the second geared element 240 is provided, the second shaft end portion 235 is coupled to the elongated bearing pin 120' via the second geared element 240.
  • the second geared structure 242 When the second geared structure 242 is provided directly in the rotatable drive shaft 232, it is arranged in the second shaft end portion 235 of the rotatable drive shaft 232. That means, the second geared structure 242 is directly formed on the rotatable drive shaft 232 (see FIG. 10A ).
  • the second geared structure 242 In the example of FIG. 10A , the second geared structure 242 is configured as an internal toothing. Alternatively, the second geared structure 242 may be configured as an external toothing (only depicted together with an additional element in FIG. 10C , but analogously to FIG. 9A ).
  • the second geared structure 242 is arranged on a radial surface of the rotatable drive shaft 232.
  • the second geared structure 242 is arranged on a surface of the rotatable drive shaft 232 pointing in radial direction with respect to the rotation axis of the rotatable drive shaft 232.
  • the second geared structure 242 is configured as an external toothing
  • the second geared structure 242 is arranged on a radial outer surface of the rotatable drive shaft 232.
  • the second geared structure 242 is arranged on a surface of the rotatable drive shaft 232 pointing in radial outward direction of the rotation axis of the rotatable drive shaft 232.
  • the second geared structure 242 is configured as an internal toothing
  • the second geared structure 242 is arranged on a radial inner surface of the rotatable drive shaft 232.
  • the second geared structure 242 is arranged on a surface of the rotatable drive shaft 232 pointing in radial inward direction of the rotation axis of the rotatable drive shaft 232. Therefore, the rotatable drive shaft 232 comprises a geared recess 246.
  • the geared recess 246 is formed in a shaft end face 235a of the rotatable drive shaft 232.
  • the second geared structure 242 is arranged in the geared recess 246.
  • the actuation system 230 can directly be coupled to the elongated bearing pin 120' in a very compact fashion.
  • the actuation system 230 can be arranged closer to the housing portion 220 (see, e.g., FIGS. 5A and 5B ). Consequently, a more compact device can be provided.
  • the second geared structure 242 may be configured as an external toothing (see FIG. 10C ) or an internal toothing (see FIG. 10B ).
  • the second geared element 240 comprises the second geared structure 242.
  • the second geared element 240 is arranged in the second shaft end portion 235 of the rotatable drive shaft 232.
  • the second geared element 240 is attached in a rotationally fixed manner to the rotatable drive shaft 232.
  • the second geared element 240 is attached in a rotationally fixed manner to the second shaft end portion 235.
  • the second geared element 240 is operatively coupled to the drive unit 234.
  • the second geared element 240 is operatively coupled to the drive unit via the rotatable drive shaft 232.
  • the second geared structure 242 is arranged on a radial surface of the second geared element 240, i.e. a surface pointing in a radial direction with respect to the rotation axis of the rotatable drive shaft 232.
  • a length of the second geared element 240 in a radial direction with respect to the rotation axis of the rotatable drive shaft 232 may be configured to place the actuation system 230 closer or further away from the elongated bearing pin 120'.
  • actuation system 230 by providing the second geared element 240 a distance between the actuation system 230 and the elongated bearing pin 120' and/or the housing portion 220 can be adjusted.
  • This enables a flexible placement of the actuation system 230 by adequately configuring the second geared element 240.
  • actuation systems 230 for instance actuation systems 230 of different sizes.
  • first geared structure 142 and/or the first geared element 140 and the second geared structure 242 and/or the second geared element 240 are possible.
  • first geared structure 142 according to the embodiment of FIG. 9A may be combined with the second geared structure 242 according to any of the embodiments depicted in FIGS. 10A, 10B , 10C or 10D .
  • the embodiment of FIG. 10D thereby represents a variation wherein the second geared element 240 is configured as a gear rack.
  • the actuation system 230 does not comprise a rotatable drive shaft 232.
  • the gear rack is directly coupled with the drive unit 234 and the drive unit is configured as a translational drive unit 234.
  • the second geared structure may extend only along an arc length 244a of a circular sector 244 (see FIG. 10C ).
  • the circular sector 244 is defined by a central angle ⁇ 2 which is preferably between 10° to 60°.
  • the central angle ⁇ 2 may lie somewhere between 5° to 360° and in particular between 15° and 45°.
  • the second geared structure 242 may alternatively also extend along the full circumference of the rotatable drive shaft 232 (if the second geared structure 242 is directly provided on the rotatable drive shaft 232 and configured as an external toothing) or the second geared element 240.
  • the second geared element 240 may be substantially shaped in a circular sector 244 or may substantially comprise only the circular sector 244 (see FIG. 10C ). Alternatively, the second geared element 240 may be shaped circular (not depicted). By adapting the central angle ⁇ 1 smaller than 360° no full rotation is required. Furthermore, the manufacturing costs can be reduced as a smaller area needs to be provided in a geared configuration.
  • the compressor 300 comprises the adjustment assembly 30 including the adjustment mechanism 10 with the housing portion 220. Furthermore, the compressor 300 comprises the compressor housing 310. The adjustment assembly 30 is inserted into the compressor housing 310 (see FIG. 8 ). Thus, the housing portion 220 forms part of the compressor housing 310. More specifically, the housing portion 220 forms the compressor inlet 312. In other words, the housing portion 220 serves as inlet port of the compressor 300. The housing portion 220 is attached to the compressor housing 310 via its flange portion 228. Although the impeller 320 is not depicted FIGS.
  • FIG. 7 shows in detail how the orifice elements 100, 100' and the transmission ring 210 is arranged in the compressor housing 310. It is clearly visible that the elongated bearing pin 120'extends through the housing portion 222 to be coupled with the actuation system 230, i.e. the drive unit 234 outside the compressor housing 310. Here in FIG. 7 , the elongated bearing pin 120' is directly coupled to the actuation system 230.
  • FIG. 8 shows another exemplary configuration in which the elongated bearing pin 120' is coupled to the actuation system 230 via the first geared element 140 and the second geared element 240.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP19165123.1A 2019-03-26 2019-03-26 Compressor inlet adjustment mechanism Active EP3715637B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19165123.1A EP3715637B1 (en) 2019-03-26 2019-03-26 Compressor inlet adjustment mechanism
CN201920551923.4U CN210889464U (zh) 2019-03-26 2019-04-23 调节机构、调节组件、压缩机和增压设备
CN201910344048.7A CN111749928A (zh) 2019-03-26 2019-04-23 压缩机入口调节机构
US16/814,389 US20200309141A1 (en) 2019-03-26 2020-03-10 Compressor inlet adjustment mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19165123.1A EP3715637B1 (en) 2019-03-26 2019-03-26 Compressor inlet adjustment mechanism

Publications (2)

Publication Number Publication Date
EP3715637A1 EP3715637A1 (en) 2020-09-30
EP3715637B1 true EP3715637B1 (en) 2022-10-26

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EP19165123.1A Active EP3715637B1 (en) 2019-03-26 2019-03-26 Compressor inlet adjustment mechanism

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US (1) US20200309141A1 (zh)
EP (1) EP3715637B1 (zh)
CN (2) CN111749928A (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209586760U (zh) * 2018-05-02 2019-11-05 博格华纳公司 用于可变地调节压缩机入口的截面的装置、增压设备
CN210122961U (zh) * 2018-11-12 2020-03-03 博格华纳公司 操纵装置、调整机构、压缩机和增压装置
WO2021070826A1 (ja) * 2019-10-09 2021-04-15 株式会社Ihi 遠心圧縮機
EP4051908B1 (en) * 2019-10-31 2023-12-20 Daikin Industries, Ltd. Inlet guide vane actuator assembly

Citations (2)

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Publication number Priority date Publication date Assignee Title
US20090095350A1 (en) * 2007-10-16 2009-04-16 Walter Douglas Bauman Actuator for an air intake valve
US20150125274A1 (en) * 2013-11-01 2015-05-07 Industrial Technology Research Institute Inlet guide vane device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190195122A1 (en) * 2016-09-02 2019-06-27 Borgwarner Inc. Turbocharger having variable compressor trim
US10570905B2 (en) * 2017-08-11 2020-02-25 Garrett Transportation I Inc. Centrifugal compressor for a turbocharger, having synergistic ported shroud and inlet-adjustment mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090095350A1 (en) * 2007-10-16 2009-04-16 Walter Douglas Bauman Actuator for an air intake valve
US20150125274A1 (en) * 2013-11-01 2015-05-07 Industrial Technology Research Institute Inlet guide vane device

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US20200309141A1 (en) 2020-10-01
CN210889464U (zh) 2020-06-30
CN111749928A (zh) 2020-10-09
EP3715637A1 (en) 2020-09-30

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