WO2022181997A1 - 베어링 냉각 수로를 포함하는 터보 압축기 - Google Patents
베어링 냉각 수로를 포함하는 터보 압축기 Download PDFInfo
- Publication number
- WO2022181997A1 WO2022181997A1 PCT/KR2022/001019 KR2022001019W WO2022181997A1 WO 2022181997 A1 WO2022181997 A1 WO 2022181997A1 KR 2022001019 W KR2022001019 W KR 2022001019W WO 2022181997 A1 WO2022181997 A1 WO 2022181997A1
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- WIPO (PCT)
- Prior art keywords
- cooling
- passage
- bearing
- impeller
- housing
- Prior art date
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 122
- 239000007789 gas Substances 0.000 claims abstract description 79
- 239000000112 cooling gas Substances 0.000 claims abstract description 44
- 239000000110 cooling liquid Substances 0.000 claims abstract description 33
- 238000007906 compression Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims abstract description 11
- 239000000498 cooling water Substances 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 11
- 230000004308 accommodation Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000011888 foil Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241001415846 Procellariidae Species 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Images
Classifications
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- 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
- F04D25/06—Units comprising pumps and their driving means the pump being electrically 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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
-
- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
-
- 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
-
- 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
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
-
- 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
- F05D2210/00—Working fluids
- F05D2210/10—Kind or type
- F05D2210/12—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
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/50—Bearings
-
- 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
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/31—Retaining bolts or nuts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Definitions
- the present invention relates to a turbocompressor, and more particularly, to a turbocompressor in which a cooling gas accommodated in a shear passage adjacent to a bearing cooling channel and a thrust bearing supporting a rotating shaft can be cooled very quickly.
- a turbo compressor or turbo blower is a centrifugal pump that sucks in air or gas from the outside by rotating an impeller at high speed, compresses it, and then blows it to the outside. It is widely used for aeration in sewage treatment plants, etc., and recently, it is also used for industrial processes and automobile mounting.
- FIG. 1 An example of a conventional turbocompressor is disclosed in FIG. 1 , wherein the turbocompressor 1 includes a motor 3 mounted on a housing 2 , a rotating shaft 4 rotated by the motor 3 , and the A pair of journal bearings 5 supporting the rotating shaft 4, a thrust bearing 6 supporting the rear end of the rotating shaft 4, and the cooling gas G accommodated in the cooling furnace 8 are forced to circulate. It includes a cooling fan (7) for cooling, and an impeller (9) coupled to the front end of the rotating shaft (4).
- the cooling gas G does not cool the inside of the rotating shaft 4 and only the surface of the rotating shaft 4 is cooled, so the thermal expansion of the rotating shaft 4 may occur a lot.
- the thrust bearing 6 is disposed at the rear end of the rotating shaft 4 opposite to the impeller 9, considering the thermal expansion of the rotating shaft 4 that occurs during use, the turbo compressor ( 1) Since the gap between the blade of the impeller 9 and the housing 10 must be sufficiently large in advance from the time of manufacture, there is also a problem in that the performance of the impeller 9 is deteriorated due to this.
- the present invention has been devised to solve the above problem, and its object is to provide a turbocompressor with an improved structure so that the cooling gas accommodated in the shear passage adjacent to the bearing cooling channel and the thrust bearing supporting the rotating shaft can be cooled very quickly. is to provide
- a turbocompressor capable of supplying a compressed gas to the outside, comprising: a compressed gas inlet through which the gas is sucked; an impeller for compressing the gas introduced through the compressed gas inlet; a compressed gas outlet through which the gas compressed by the impeller is discharged to the outside; a compression unit having a compressed gas flow path connected from the compressed gas inlet to the compressed gas outlet;
- one end of the motor having a rotating shaft coupled to the impeller; a housing having a motor accommodating space for accommodating the motor; a cooling path provided to pass through the motor accommodating space and formed to allow the cooling gas accommodated therein to flow; a cooling water passage formed to allow a cooling liquid capable of cooling the housing to flow; and a thrust bearing disposed at one end of the rotating shaft, wherein the cooling water passage includes a bearing cooling water passage disposed within a predetermined distance from the thrust bearing so as to cool the thrust bearing.
- the bearing cooling water passage extends by a predetermined length along the radial direction of the rotation shaft so that the cooling liquid can flow along the radial direction of the rotation shaft.
- the rotating shaft includes a thrust bearing runner corresponding to the thrust bearing, and the bearing cooling water passage is provided at a position and shape corresponding to the thrust bearing runner.
- journal bearing disposed between the impeller and the thrust bearing may be included, wherein the journal bearing is disposed below the bearing cooling channel.
- the said thrust bearing and the journal bearing are air bearings.
- the cooling passage may include a passage passing through the housing to cool the housing, and the cooling passage may include a water passage passing through the housing to cool the housing.
- the cooling water passage is provided to exchange heat with the cooling gas accommodated in the cooling passage, and the passage passing through the housing and the water passage passing through the housing extend along the longitudinal direction of the rotation shaft, , It is preferable that they are alternately arranged along the circumferential direction of the rotation shaft.
- the rotating shaft includes a hollow extending in the longitudinal direction, and the cooling path includes a path passing through the hollow of the rotating shaft.
- the rotation shaft a plurality of members including a hollow extending along the longitudinal direction; A member extending along the longitudinal direction of the rotation shaft, which is disposed in a state of passing through the hollows of the plurality of members in turn, and a tie bolt capable of detachably coupling the plurality of members and the impeller to each other; including it is preferable
- the compressed gas passage is spatially separated from the cooling passage, so that the gas in the compressed gas passage cannot penetrate into the cooling passage, and cooling for forced flow of the cooling gas accommodated in the cooling passage It is preferred to include a fan.
- the cooling fan is disposed at the rear end of the rotating shaft, and preferably rotates by the rotational force of the rotating shaft.
- the cooling passage may include a passage flowing out to the front of the impeller after passing through the hollow of the rotation shaft.
- the compressed gas inlet through which the gas is sucked; an impeller for compressing the gas introduced through the compressed gas inlet; a compressed gas outlet through which the gas compressed by the impeller is discharged to the outside; a compression unit having a compressed gas flow path connected from the compressed gas inlet to the compressed gas outlet;
- the front end of the motor having a rotating shaft coupled to the impeller; a housing having a motor accommodating space for accommodating the motor; a cooling path provided to pass through the motor accommodating space and formed to allow the cooling gas accommodated therein to flow; a cooling water passage formed to allow a cooling liquid capable of cooling the housing to flow; and a thrust bearing disposed at one end of the rotating shaft, wherein the cooling channel includes a bearing cooling channel disposed within a predetermined distance from the thrust bearing to cool the thrust bearing, so that the bearing is cooled
- FIG. 1 is a cross-sectional view of a conventional turbocompressor.
- FIG. 2 is a cross-sectional view of a turbocompressor according to an embodiment of the present invention.
- FIG. 3 is a partially enlarged view of the turbocompressor shown in FIG. 2 .
- FIG. 4 is a partially enlarged view of the turbocompressor shown in FIG. 2 , illustrating a liquid flow for cooling.
- FIG. 5 is a cross-sectional view taken along line A-A of the turbocompressor shown in FIG. 2 .
- FIG. 6 is a cross-sectional view taken along line B-B of the turbocompressor shown in FIG. 2 .
- FIG. 7 is a cross-sectional view taken along line C-C of the turbocompressor shown in FIG. 2 .
- FIG. 8 is a view showing a liquid flow for cooling of the turbocompressor shown in FIG. 2 .
- FIG. 9 is a cross-sectional view of the rotation shaft shown in FIG. 2 and a periphery thereof.
- FIG. 10 is a perspective view of a first member that is a part of the rotation shaft shown in FIG. 2 .
- FIG. 11 is a view showing an outlet passage of a turbocompressor according to another embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a turbocompressor according to an embodiment of the present invention
- FIG. 3 is a partially enlarged view of the turbocompressor shown in FIG.
- FIG. 4 is a partially enlarged view of the turbocompressor shown in FIG. 2 , illustrating a liquid flow for cooling.
- the turbocompressor 100 is a centrifugal pump that sucks and compresses external gas by rotating an impeller at high speed and then blows it to the outside. , also called a so-called turbo compressor or turbo blower.
- the turbocompressor 100 includes a housing 10 , a compression unit 20 , a motor 30 , an air cooling unit 40 , and a water cooling unit 50 .
- the gas to be compressed is air.
- the housing 10 is a metal housing, a cylindrical member having a motor accommodating space 13 therein, and has a cross-section with a first central axis C1 as the center of a circle, and the second 1 It extends along the central axis C1.
- the motor accommodation space 13 is a space having a shape corresponding to the motor 30 to accommodate the motor 30 to be described later.
- an impeller 21 of the compression unit 20 is disposed on the front end 11 of the housing 10 , and a cooling fan is mounted on the rear end 12 of the housing 10 .
- a ball 121 is formed.
- the housing 10 is separately manufactured into a plurality of components for mounting the motor 30 , but a detailed description thereof will be omitted.
- the compression unit 20 is a device for sucking in and compressing external air, and includes an impeller 21 and a front cover 22 .
- the impeller 21 is a wheel having a plurality of blades having a curved surface as a main configuration of the centrifugal pump, and is mounted to enable high-speed rotation.
- the front cover 22 is a metal member disposed in front of the impeller 21 , and has a compressed gas suction port 24 for sucking in external air.
- the front cover 22 is provided in the form of a scroll casing having a flow path formed so that the air passing through the impeller 21 can flow in a spiral shape.
- the impeller 21 compresses the air introduced through the compressed gas inlet 24 , and as shown in FIG. 2 , the air compressed by the impeller 21 is discharged through the compressed gas outlet 25 to the outside. is emitted
- the air sucked in through the compressed gas inlet 24 is compressed while moving along the compressed gas flow path 26 connected from the compressed gas inlet 24 to the compressed gas outlet 25 .
- the motor 30 is an electric motor that generates a rotational force, and is a device for supplying a high-speed rotational force to the impeller 21 .
- the motor 30 includes a rotating shaft 31 , a stator 32 , a rotor 33 , a journal bearing 34 , and a thrust bearing 35 .
- the rotation shaft 31 is a rod member extending along the first central axis C1 , and a front end portion thereof is non-rotatably coupled to the impeller 21 in order to rotate the impeller 21 .
- the rotation shaft 31 includes a plurality of members 31a, 31b, 31c, and 31d as shown in FIG. 9 .
- the plurality of members 31a, 31b, 31c, and 31d are detachably coupled to each other by a tie bolt 31e and a nut 31f.
- the plurality of members 31a , 31b , 31c , and 31d include a hollow H extending along the first central axis C1 which is the longitudinal direction of the rotation shaft 31 .
- the tie bolt 31e is a male screw member extending along the longitudinal direction C1 of the rotation shaft 31, and sequentially passes through the hollows H of the plurality of members 31a, 31b, 31c, and 31d. is placed as
- the nut 31f is a female screw member capable of being screwed with the front end of the tie bolt 31e.
- the impeller 21 is disposed in front of the first member 31a, and a cooling fan 42, which will be described later, is coupled to the fourth member 31d.
- the first member 31a is a pipe-shaped member having a hollow H, and a thrust bearing runner 311 corresponding to the thrust bearing 35 is provided at an intermediate portion thereof.
- the thrust bearing runner 311 is a disk-shaped runner as shown in FIG. 10 .
- a plurality of through holes 312 penetrating from the outer peripheral surface to the hollow H are formed in the middle portion of the first member 31a.
- the through hole 312 is a hole through which a cooling gas, which will be described later, passes.
- the fourth member 31d is a pipe-like member having a hollow H, and a plurality of through holes 313 penetrating from the outer peripheral surface to the hollow H are formed.
- the through hole 313 is a hole through which a cooling gas, which will be described later, passes.
- the rotation shaft 31 includes an inner passage 41e extending from the through hole 312 through the hollow H to the through hole 313 .
- the stator 32 is a stator on which a field coil is wound, and is mounted in a fixed state in the motor accommodation space 13 .
- the rotor 33 is a rotor including a permanent magnet, and is coupled to the middle portion of the rotation shaft 31 .
- the journal bearing 34 is a journal foil air bearing that rotatably supports the rotation shaft 31 in order to reduce frictional force generated by high-speed rotation, and is a front end of the rotation shaft 31 . It is provided on the part and the rear end, respectively.
- journal bearings 34 the journal bearing 34 disposed at the front end of the rotary shaft 31 is disposed between the impeller 21 and the thrust bearing 35 , as shown in FIG. 4 . As shown, it is disposed just below the bearing cooling conduit 51c.
- the thrust bearing 35 is a thrust foil air bearing, and a pair is provided and disposed on both surfaces of the thrust bearing runner 311 , respectively.
- the thrust bearing 35 is disposed at the front end of the motor accommodation space 13 as shown in FIG. 2 .
- the air cooling unit 40 is a device for cooling the housing 10 and the motor 30 using a cooling gas, and includes a cooling path 41 and a cooling fan 42 .
- a cooling gas air or an inert gas is used.
- the cooling passage 41 is a passage for accommodating the cooling gas, and is formed to enable continuous circulation of the cooling gas accommodated therein.
- the cooling passage 41 is provided to pass through the motor accommodating space 13 and the housing 10 as shown in FIG. 3 , the rear passage 41a, the outer passage 41b, and the front passage It includes (41c), an intermediate passage 41d, and an inner passage 41e.
- the rear end passage 41a is a passage provided to allow the cooling gas to flow from the center of the housing rear end 12 in the radial direction of the housing rear end 12 .
- the rear end passage 41a is a disk-shaped space provided inside the housing rear end portion 12 .
- the outer passage 41b is a passage passing through the housing 10 to cool the housing 10 , and extends around the first central axis C1 .
- a plurality of the outer passages 41b are arranged along the circumferential direction of the first central axis C1 and communicate with the rear end passages 41a.
- the front end passage 41c is a passage provided to allow the cooling gas to flow from the outside of the housing front end 11 toward the center of the housing front end 11 .
- the shear passage 41c extends from the front end of the outer passage 41b to the motor accommodating space 13 and includes a plurality of holes 41c penetrating the housing 10 .
- the intermediate passage 41d is a passage extending from the middle portion of the outer passage 41b to the motor accommodating space 13 and including a plurality of holes 41d penetrating the housing 10 .
- the intermediate passage 41d includes a passage passing through a space between the rotation shaft 31 and the stator 32 .
- the intermediate passage 41d is provided so that the cooling gas can pass through the field coil of the stator 32 , the outer peripheral surface of the rotation shaft 31 , and the thrust bearing 35 .
- the inner passage 41e is a cooling passage that flows inside the hollow H of the rotation shaft 31, from the through hole 312 of the rotation shaft 31 through the hollow H through the through hole 313 It is a cooling path that leads to
- the inner passage 41e communicates with the forward passage 41c, the rear end passage 41a, and the intermediate passage 41d, respectively.
- the cooling path 41 is preferably arranged rotationally or axially symmetrically about the first central axis C1 as shown in FIG. 5 .
- the cooling path 41 is spatially separated from the compressed gas flow path 26 . Accordingly, the air in the compressed gas passage 26 leaks from the compressed gas passage 26 during the compression process and cannot penetrate into the cooling passage 41 .
- the cooling fan 42 is a cooling fan for forcibly circulating and flowing the cooling gas accommodated in the cooling passage 41 , and is installed in the cooling fan mounting hole 121 of the inner housing 11 . is fitted
- the cooling fan 42 is non-rotatably coupled to the rear end of the rotating shaft 31 , and thus rotates together by the rotational force of the rotating shaft 31 .
- the water cooling unit 50 is a device for cooling the housing 10 using a cooling liquid, and includes a cooling water passage 51 , a cooling liquid inlet 53 , and a cooling liquid outlet 54 .
- a cooling water passage 51 a cooling water passage 51 , a cooling liquid inlet 53 , and a cooling liquid outlet 54 .
- water is used as the cooling liquid.
- the cooling water passage 51 is a passage for accommodating the cooling liquid, and is formed so as to allow a continuous circulating flow of the cooling gas accommodated therein.
- the cooling water channel 51 is provided to pass through the housing 10 for cooling the housing 10 as shown in FIGS. 2 and 4, and includes a unit water channel 51a and a rear end channel 51b. and a shear channel 51c.
- the unit water channel 51a is a circular water channel passing through the housing 10 and extends around the first central axis C1 .
- a plurality of the unit water channels 51a are arranged in a state spaced apart from each other along the circumferential direction of the first central axis C1.
- the rear end conduit 51b is a conduit connecting the rear end portions of the unit conduit 51a to each other, and is formed to pass through the housing rear end portion 12 as shown in FIG. 7 .
- the front end conduit 51c is a conduit for connecting the front ends of the unit water channels 51a to each other, and is formed to pass through the housing front end 11 as shown in FIG. 6 .
- the shear water channel 51c includes a bearing cooling water channel provided to more efficiently cool the thrust bearing 35 as shown in FIG. 4 .
- the bearing cooling channel 51c is disposed within a predetermined distance from the thrust bearing 35 and the shear path 41c, and as close as possible to the distance.
- the bearing cooling water channel 51c has a predetermined length H1 along the radial direction of the rotating shaft 31 so that the cooling liquid can flow along the radial direction of the rotating shaft 31 as shown in FIG. 6 . ) is extended.
- the bearing cooling water channel 51c is provided in a position and shape corresponding to that of the thrust bearing runner 311 .
- the bearing cooling water channel 51c in this embodiment has a sector shape in which the upper width W1 is larger than the lower width W2, and the first central axis C1 A plurality are arranged along the circumferential direction of
- the upper width W1 and the radial length H1 of the bearing cooling conduit 51c vary according to the distance between the adjacent unit conduits 51a.
- the cooling water channel 51 is formed along the circumferential direction of the housing 10 in a zigzag shape, and is disposed to surround the entire sidewall of the housing 10 .
- the cooling water channels 51 are preferably arranged rotationally or axially symmetrically about the first central axis C1.
- the cooling liquid inlet 53 is an inlet through which the cooling liquid flows from the outside, and is in communication with one end of the cooling water passage 51 , and is located at the rear end of the housing 12 . is provided.
- cooling liquid inlet 53 is connected to a pump (not shown) provided outside, water is supplied by the pump.
- the cooling liquid outlet 54 is an outlet through which the cooling liquid flows out, communicates with the other end of the cooling water passage 51 , and is provided at the rear end 12 of the housing.
- the cooling liquid discharged from the cooling liquid outlet 54 may be separately cooled from the outside and then introduced again through the cooling liquid inlet 53 .
- the cooling water passage 51 is provided to exchange heat with the cooling gas accommodated in the cooling passage 41 .
- the unit water passage 51a and the outer passage 41b are alternately arranged while passing through the housing 10 along the circumferential direction of the rotation shaft 31 as shown in FIG. have.
- the impeller 21 and the cooling fan 42 rotate, and the air introduced through the compressed gas inlet 24 is transferred to the compression unit 20 . It is compressed while flowing along the compressed gas flow path 26 of the and is discharged to the outside through the compressed gas outlet 25 . At this time, since the compressed gas passage 26 is spatially separated from the cooling passage 41 , the air flowing in the compressed gas passage 26 leaks during compression and penetrates into the cooling passage 41 . Can not. That is, the flow of air flowing along the compressed gas flow passage 26 and the cooling gas flow G flowing along the cooling passage 41 do not mix with each other.
- the cooling gas accommodated in the cooling passage 41 is forcibly circulated by the cooling fan 42 , so as shown in FIG. 3 , the inner side wall 41b of the housing 10 and the housing
- cooling liquid accommodated in the cooling water passage 51 flows in from the cooling liquid inlet 53 , as shown in FIG. 8 , it follows the circumferential direction of the housing 10 in a zigzag shape. A flowing cooling liquid flow W is formed, and after cooling the housing 10 as a whole, it is discharged through the cooling liquid outlet 54 .
- the cooling gas flowing through the outer passage 41b is rapidly cooled by the cooling liquid flowing through the unit water passage 51a adjacent to the outer passage 41b.
- the unit water passage 51a and the outer passage 41b are alternately arranged while passing through the housing 10 along the circumferential direction of the rotation shaft 31 as shown in FIG.
- the heat exchange efficiency between the cooling liquid flowing through the unit water passage 51a and the cooling gas flowing through the outer passage 41b is very high.
- the cooling liquid approaches the rotation shaft 31 along the radial direction of the rotation shaft 31 and then moves away from the rotation shaft 31 again. to achieve a "U"-shaped flow.
- the flow (W) of the cooling liquid inside the bearing cooling channel (51c) the adjacent shear path (41c) and the thrust bearing (35) can be cooled very quickly.
- the cooling gas flowing along the shear passage 41c enters the hollow H of the rotary shaft 31 through the through hole 312 , and then the hollow H Accordingly, after flowing to the rear end of the rotation shaft 31 , it exits the hollow H of the rotation shaft 31 through the through hole 313 . At this time, the rotor 33 and the rotation shaft 31 itself present in the hollow H of the rotation shaft 31 can be cooled very quickly.
- the turbocompressor 100 having the above configuration is a turbocompressor capable of compressing and supplying gas to the outside, comprising: a compressed gas inlet 24 through which the gas is sucked; an impeller 21 for compressing the gas introduced through the compressed gas inlet 24; a compressed gas outlet 25 through which the gas compressed by the impeller 21 is discharged to the outside; a compression unit (20) having a compressed gas flow path (26) connected from the compressed gas inlet (24) to the compressed gas outlet (25);
- the front end of the motor 30 having a rotating shaft 31 coupled to the impeller 21; a housing 10 having a motor accommodating space 13 accommodating the motor 30; a cooling path 41 provided to pass through the motor accommodating space 13 and formed to allow the cooling gas accommodated therein to flow; a cooling conduit 51 formed to allow a cooling liquid capable of cooling the housing 10 to flow; and a thrust bearing (35) disposed at one end of the rotation shaft (31), and the cooling water channel (51) is configured to be previously connected to the thrust bearing (35) so as to
- the turbocompressor 100 has a predetermined length along the radial direction of the rotating shaft 31 so that the bearing cooling water channel 51c allows the cooling liquid to flow along the radial direction of the rotating shaft 31 . Since it extends as much as H1 , the bearing cooling water channel 51c has an advantage that it can cover the entire area of the shear passageway 41c and the thrust bearing 35 .
- the turbocompressor 100 includes a thrust bearing runner 311 in which the rotating shaft 31 corresponds to the thrust bearing 35 , and the bearing cooling channel 51c is provided with the thrust bearing runner 311 . Since it is provided in a position and shape corresponding to , there is an advantage in that the entire area of the thrust bearing 35 can be uniformly and quickly cooled.
- turbocompressor 100 includes a journal bearing 34 disposed between the impeller 21 and the thrust bearing 35 as a bearing supporting the rotation shaft 31 , the journal Since the bearing 34 is disposed below the bearing cooling water passage 51c, there is an advantage in that it is easy to secure a space in the housing 10 for forming the bearing cooling water passage 51c.
- the thrust bearing 35 and the journal bearing 34 are foil air bearings, there is no mechanical friction and is non-contact, easy cooling of the bearing using air, no operating noise, and semi-permanent It has the advantage of providing a durable lifespan.
- the turbocompressor 100 includes passages 41a, 41b, 41c, and 41d passing through the housing 10 so that the cooling passage 41 can cool the housing 10,
- the cooling water passage 51 includes water passages 51a, 51b, and 51c passing through the housing 10 so as to cool the housing 10, so that the cooling gas and the cooling liquid are used at the same time to quickly There is an advantage in that the housing 10 can be cooled. At this time, since the cooling water passage 51 passes through the housing 10, there is an advantage in that the cooling efficiency is excellent and there is little possibility of leakage compared to the case of using a separate cooling pipe.
- the cooling water passage 51 is provided to exchange heat with the cooling gas accommodated in the cooling passage 41 , and a passage 41a passing through the housing 10 , 41b, 41c, 41d and the water channels 51a, 51b, and 51c passing through the housing 10 extend along the longitudinal direction C1 of the rotating shaft 31, and in the circumferential direction of the rotating shaft 31 Since they are alternately arranged along the , there is an advantage that heat exchange between the cooling liquid accommodated in the cooling passage 51 and the cooling gas accommodated in the cooling passage 41 is very easy.
- the rotating shaft 31 includes a hollow H extending along the longitudinal direction C1 , and the cooling path 41 is a hollow of the rotating shaft 31 . Since the passage 41e passing through (H) is included, there is an advantage that the rotor 33 existing in the hollow H of the rotation shaft 31 and the rotation shaft 31 itself can be cooled very quickly.
- the turbocompressor 100 may include a plurality of members 31a, 31b, 31c, and 31d including a hollow H extending in the longitudinal direction C1 of the rotating shaft 31; As a member extending along the longitudinal direction C1 of the rotation shaft 31, it is disposed in a state of passing through the hollow H of the plurality of members 31a, 31b, 31c, and 31d in order, and the plurality of members (31a, 31b, 31c, 31d) and a tie bolt (31e) capable of detachably coupling the impeller 21 to each other; There is an advantage in that the cost of replacing parts of the rotating shaft 31 is reduced.
- the compressed gas passage 26 is spatially separated from the cooling passage 41 , so that the gas in the compressed gas passage 26 penetrates into the cooling passage 41 . Since the cooling fan 42 for forcibly flowing the cooling gas accommodated in the cooling passage 41 is included, the motor 30 is efficiently cooled without pressure loss in the compression unit 20 . There is an advantage in that the cooling gas accommodated in the cooling passage 41 can be forcibly circulated using the cooling fan 42 .
- the cooling fan 42 is disposed at the rear end of the rotating shaft 31 and rotates by the rotational force of the rotating shaft 31 , so that the cooling fan 42 is rotated.
- the cooling water passage 51 is provided to exchange heat with the cooling gas accommodated in the cooling passage 41 , so the cooling gas heated by the motor 30 . has an advantage of having a two-stage cooling structure that can be rapidly cooled by the cooling liquid.
- journal bearing 34 is disposed between the thrust bearing 35 and the impeller 21 , but on the contrary, the thrust is disposed between the impeller 21 and the journal bearing 34 . It goes without saying that the bearing 35 may be disposed.
- the thrust bearing 35 is disposed at the front end of the rotary shaft 31 , but the thrust bearing 35 may be disposed at the rear end of the rotary shaft 31 instead. to be.
- the turbocompressor 100 having one impeller 21 is provided, but it can also be applied to a two-stage turbocompressor in which the impellers 21 are respectively disposed at both ends of the rotation shaft 31 , of course. to be.
- the cooling passage 41 is spatially separated from the compressed gas passage 26, so that the air in the compressed gas passage 26 is transferred to the cooling passage ( 41) has a closed structure that cannot penetrate, but instead, an open structure in which a part of the air compressed by the impeller 21 is introduced into the inside of the cooling passage 41 and utilized as a cooling gas may be applied.
- an open structure in which a part of the air compressed by the impeller 21 is introduced into the inside of the cooling passage 41 and utilized as a cooling gas may be applied.
- cooling fins there is no separate cooling fin inside the cooling passage 41 , but it goes without saying that a separate cooling fin may be provided inside the cooling passage 41 .
- the cooling fins may be integrally formed with the housing 10 , or may be processed into separate members and then coupled by press-fitting or the like.
- the cooling fan 42 is directly coupled to the rear end of the rotating shaft 31, but it is needless to say that the cooling fan 42 may be driven by a separate electric motor.
- the bearings 34 and 35 are provided as foil air bearings, but it goes without saying that other types of air bearings or other various bearings may be used.
- the cooling gas accommodated in the inner passage 41e flowing inside the hollow H of the rotation shaft 31 does not flow out to the front of the impeller 21, but the inner passage 41e
- an outlet passage 41f may be provided so that the cooling gas accommodated in ) can flow out to the front of the impeller 21 as shown in FIG. 11 .
- the outlet passage 41f is provided in this way, the back pressure applied to the rear of the impeller 21 can be lowered, so that the axial load applied to the thrust bearing 35 can be reduced.
- the inlet pressure of the impeller 21 is low in addition to the effect of reducing the axial load applied to the thrust bearing 35 , the air flow between the compressed gas flow path 26 and the cooling path 41 is generated and a cooling effect is added. has the advantage of being improved.
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Abstract
Description
Claims (12)
- 기체를 압축하여 외부로 공급할 수 있는 터보 압축기로서,상기 기체가 흡입되는 압축 기체 흡입구; 상기 압축 기체 흡입구를 통하여 유입된 기체를 압축하는 임펠러; 상기 임펠러에 의하여 압축된 상기 기체가 외부로 배출되는 압축 기체 배출구; 상기 압축 기체 흡입구로부터 상기 압축 기체 배출구까지 연결되어 있는 압축 기체 유로를 구비하는 압축 유닛;상기 임펠러를 회전시키기 위하여, 일단부가 상기 임펠러와 결합되어 있는 회전축을 구비하는 모터;상기 모터를 수용하는 모터 수용 공간을 구비한 하우징;상기 모터 수용 공간을 지나가도록 마련되며, 내부에 수용된 냉각용 기체가 유동 가능하도록 형성된 냉각 기로;상기 하우징을 냉각시킬 수 있는 냉각용 액체가 유동 가능하도록 형성된 냉각 수로;상기 회전축의 일단부에 배치되어 있는 스러스트 베어링;를 포함하며,상기 냉각 수로는, 상기 스러스트 베어링을 냉각시킬 수 있도록, 상기 스러스트 베어링과 미리 정한 거리 이내에 배치되어 있는 베어링 냉각 수로를 포함하는 것을 특징으로 하는 터보 압축기
- 제 1항에 있어서,상기 베어링 냉각 수로는, 냉각용 액체가 상기 회전축의 반경 방향을 따라 유동할 수 있도록, 상기 회전축의 반경 방향을 따라 미리 정한 길이만큼 연장되어 있는 것을 특징으로 하는 터보 압축기
- 제 1항에 있어서,상기 회전축은, 상기 스러스트 베어링과 대응되는 스러스트 베어링 러너를 포함하며,상기 베어링 냉각 수로는, 상기 스러스트 베어링 러너와 대응되는 위치 및 형상으로 마련되어 있는 것을 특징으로 하는 터보 압축기
- 제 1항에 있어서,상기 회전축을 지지하는 베어링으로서, 상기 임펠러와 상기 스러스트 베어링의 사이에 배치되어 있는 저널 베어링;을 포함하며,상기 저널 베어링은, 상기 베어링 냉각 수로의 하방에 배치되어 있는 것을 특징으로 하는 터보 압축기
- 제 4항에 있어서,상기 스러스트 베어링과 저널 베어링은, 공기 베어링인 것을 특징으로 하는 터보 압축기
- 제 1항에 있어서,상기 냉각 기로는, 상기 하우징을 냉각할 수 있도록 상기 하우징을 관통하는 기로를 포함하며,상기 냉각 수로는, 상기 하우징을 냉각할 수 있도록 상기 하우징을 관통하는 수로를 포함하는 것을 특징으로 하는 터보 압축기
- 제 6항에 있어서,상기 냉각 수로는, 상기 냉각 기로의 내부에 수용된 냉각용 기체와 열교환할 수 있도록 마련되어 있으며,상기 하우징을 관통하는 기로와 상기 하우징을 관통하는 수로는, 상기 회전축의 길이 방향을 따라 연장되어 있으며, 상기 회전축의 원주 방향을 따라 교대로 배치되어 있는 것을 특징으로 하는 터보 압축기
- 제 1항에 있어서,상기 회전축은, 길이 방향을 따라 연장되어 있는 중공을 포함하고 있으며,상기 냉각 기로는, 상기 회전축의 중공을 관통하는 기로를 포함하는 것을 특징으로 하는 터보 압축기
- 제 1항에 있어서,상기 회전축은,길이 방향을 따라 연장되어 있는 중공을 포함하는 복수 개의 부재;상기 회전축의 길이 방향을 따라 연장된 부재로서, 상기 복수 개 부재의 중공을 차례로 관통한 상태로 배치되어 있으며, 상기 복수 개의 부재와 상기 임펠러를 분리 가능하게 서로 결합시킬 수 있는 타이 볼트;를 포함하는 것을 특징으로 하는 터보 압축기
- 제 1항에 있어서,상기 압축 기체 유로는 상기 냉각 기로와 공간적으로 분리됨으로써, 상기 압축 기체 유로의 내부에 있는 기체가 상기 냉각 기로로 침투할 수 없으며,상기 냉각 기로의 내부에 수용된 냉각용 기체를 강제 유동시키기 위한 냉각팬을 포함하는 것을 특징으로 하는 터보 압축기
- 제 10항에 있어서,상기 냉각팬은, 상기 회전축의 후단부에 배치되며, 상기 회전축의 회전력에 의하여 회전하는 것을 특징으로 하는 터보 압축기
- 제 8항에 있어서,상기 냉각 기로는, 상기 회전축의 중공을 관통한 후 상기 임펠러의 전방으로 유출되는 기로를 포함하는 것을 특징으로 하는 터보 압축기
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JP2023546520A JP2024505260A (ja) | 2021-02-24 | 2022-01-20 | 軸受冷却水路を含むターボ圧縮機 |
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CN116696812A (zh) * | 2023-07-26 | 2023-09-05 | 烟台东德实业有限公司 | 一种高速离心空压机内部循环水路冷却系统 |
CN116792322A (zh) * | 2023-07-10 | 2023-09-22 | 青岛三利智能动力有限公司 | 智能双驱泵及供水系统 |
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KR102603139B1 (ko) * | 2023-04-06 | 2023-11-20 | 주식회사 성광이엔에프 | 히트파이프 결합형 냉각모듈이 구비된 기계적 증기 재압축 장치 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4932921B2 (ja) * | 2010-03-31 | 2012-05-16 | 本田技研工業株式会社 | 電動遠心圧縮機 |
KR20170058082A (ko) * | 2015-11-18 | 2017-05-26 | 한온시스템 주식회사 | 차량용 공기 압축기 |
KR20180118455A (ko) * | 2017-04-21 | 2018-10-31 | 엘지전자 주식회사 | 터보 압축기 |
KR20190002972A (ko) * | 2017-06-30 | 2019-01-09 | 한온시스템 주식회사 | 공기압축기 |
KR20190109886A (ko) * | 2018-03-19 | 2019-09-27 | ㈜티앤이코리아 | 폐쇄 순환형 냉각 기로를 구비한 터보 압축기 |
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- 2022-01-20 WO PCT/KR2022/001019 patent/WO2022181997A1/ko active Application Filing
- 2022-01-20 JP JP2023546520A patent/JP2024505260A/ja active Pending
- 2022-01-20 CN CN202280015609.9A patent/CN116867975A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4932921B2 (ja) * | 2010-03-31 | 2012-05-16 | 本田技研工業株式会社 | 電動遠心圧縮機 |
KR20170058082A (ko) * | 2015-11-18 | 2017-05-26 | 한온시스템 주식회사 | 차량용 공기 압축기 |
KR20180118455A (ko) * | 2017-04-21 | 2018-10-31 | 엘지전자 주식회사 | 터보 압축기 |
KR20190002972A (ko) * | 2017-06-30 | 2019-01-09 | 한온시스템 주식회사 | 공기압축기 |
KR20190109886A (ko) * | 2018-03-19 | 2019-09-27 | ㈜티앤이코리아 | 폐쇄 순환형 냉각 기로를 구비한 터보 압축기 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116792322A (zh) * | 2023-07-10 | 2023-09-22 | 青岛三利智能动力有限公司 | 智能双驱泵及供水系统 |
CN116696812A (zh) * | 2023-07-26 | 2023-09-05 | 烟台东德实业有限公司 | 一种高速离心空压机内部循环水路冷却系统 |
CN116696812B (zh) * | 2023-07-26 | 2024-02-06 | 烟台东德实业有限公司 | 一种高速离心空压机内部循环水路冷却系统 |
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CN116867975A (zh) | 2023-10-10 |
JP2024505260A (ja) | 2024-02-05 |
KR20220121072A (ko) | 2022-08-31 |
KR102508011B1 (ko) | 2023-03-09 |
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