EP3690247A1 - Spiralverdichter - Google Patents

Spiralverdichter Download PDF

Info

Publication number
EP3690247A1
EP3690247A1 EP20154795.7A EP20154795A EP3690247A1 EP 3690247 A1 EP3690247 A1 EP 3690247A1 EP 20154795 A EP20154795 A EP 20154795A EP 3690247 A1 EP3690247 A1 EP 3690247A1
Authority
EP
European Patent Office
Prior art keywords
housing
orbiting
scroll
projection
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20154795.7A
Other languages
English (en)
French (fr)
Inventor
O Chang Gwon
Woo Gyong Yim
Tae Kyoung Kim
Jehoon Kim
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.)
LG Electronics Inc
Original Assignee
LG Electronics 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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP3690247A1 publication Critical patent/EP3690247A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
    • F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
    • F01C17/063—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with only rolling movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/10—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0057—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0085—Prime movers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/14—Refrigerants with particular properties, e.g. HFC-134a
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/50—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/57—Seals

Definitions

  • a compressor and more specifically, to a scroll compressor is disclosed herein.
  • Compressors are devices for compressing fluids such as refrigerant gases. They may be classified as rotary compressors, reciprocating compressors, scroll compressors and the like, on the basis of methods of compressing fluids.
  • a plurality of compression chambers may be created between two scrolls while the two scrolls relatively orbit, the compression chambers continuously move in a central direction, and their volume is reduced. Accordingly, refrigerants are continuously suctioned, compressed and discharged.
  • FIG. 1 is a sectional view illustrating an example of a conventional horizontal scroll compressor.
  • the conventional horizontal scroll compressor (referred to as “scroll compressor” for short) includes a compression part comprised of a fixed scroll 2 and an orbiting scroll 3 in an accommodation space of a sealed casing 1. Additionally, in the compression part, a driving motor 4 for delivering driving force to the compression part is connected to a crank shaft 5.
  • the accommodation space of the casing 1 is divided into a suction space (S1) that communicates with an inlet port 11 and a discharge space (S2) that communicates with a discharge port 12 , by a main frame 6.
  • the suction space (S1) is partitioned into a suction chamber 15 that communicates with the inlet port 11, and a discharge chamber 16 that communicates the compression chamber (P) with the discharge space (S2).
  • the fixed scroll 2 is provided with a fixed lap 21 that is fixed in front of the main frame 6.
  • a shaft supporter 61 that supports the crank shaft 5 in a radial direction is formed at the center of the main frame 6.
  • a main bearing 62 that supports the crank shaft 5 in a radial direction is installed in the shaft supporter 61.
  • a sub frame 8 that supports the crank shaft 5 together with the main frame 6 is spaced a certain distance apart from one side of the main frame 6, and is coupled and fixed to one side of the main frame 6.
  • the driving motor 4 that generates rotational force is installed in the discharge space 16 between the main frame 6 and the sub frame 8.
  • 22 indicates a suction port
  • 23 indicates an exhaust port
  • 32 indicates a boss part
  • 33 indicates a pin bearing
  • 41 indicates a stator of the driving motor
  • 51 indicates an oil flow passage
  • 81 indicates a sub bearing that supports the crank shaft in a radial direction
  • 82 indicates an oil pump
  • 9 indicates an inverter.
  • the compression chamber (P) moves to the center by continuous orbital motions of the orbiting scroll 3, and volume is reduced. Accordingly, refrigerant gases are suctioned into the suction space (S1) of the casing 1 through the inlet port 11. The suctioned refrigerant gases are discharged to the discharge space (S2) of the casing 1 through the exhaust port 23 while being suctioned into and compressed in the compression chamber (P) through the suction port 22 provided in the fixed scroll 2. The discharged refrigerant gases circulate in the refrigeration cycle and are suctioned again into the suction space (S1) of the casing 1. That is, in the scroll compressor, a series of processes, in which refrigerant gases are suctioned, compressed and discharged, and in which the discharged refrigerant gases are suctioned, compressed and discharged again, are repeated.
  • a scroll compressor with the above-described configuration is generally provided with an interior rotor-type motor, i.e., the driving motor 4 in which the stator 41 is placed outside of a motor and in which the rotor 42 is placed inside the stator 41.
  • crank shaft 5 is used to deliver driving force of the driving motor 4 to the orbiting scroll 2.
  • the crank shaft 5 is required to penetrate between a space in which the driving motor 4 is installed and a space in which the compression chamber (P) is formed. Accordingly, a shaft seal has to be installed to seal the perimeter of the crank shaft 5 in a portion through which the crank shaft 5 passes. Thus, friction losses, which are caused by friction between the shaft seal and the crank shaft 5, increase.
  • the main frame 6 has to be installed between the space in which the driving motor 4 is installed and the space in which the compression chamber (P) is formed, to separate the suction space (S1) and the discharge space (S2). In this case, the scroll compressor may not become compact due to the main frame 6.
  • the scroll compressor with the above-described configuration further includes a sub frame 8 in addition to the main frame 6 to stably support the crank shaft 5.
  • a plurality of bearings are additionally required.
  • One objective of the present disclosure is to provide a scroll compressor having an improved structure in which other components required for driving the scroll compressor may perform the functions of a crank shaft and a main frame, thereby scaling down the scroll compressor and enhancing performance of the scroll compressor.
  • Another objective of the present disclosure is to provide a scroll compressor in which the number of components and man-hours may be reduced, thereby reducing costs of manufacturing the scroll compressor and scaling down the scroll compressor.
  • the scroll compressor according to the present disclosure includes an orbiting scroll that is directly connected to an outer rotor-type motor and is orbited.
  • a motor is provided in the form of an outer rotor-type motor in which a rotor is placed outside of a stator fixed to a housing, and the orbiting scroll is directly connected to the rotor and is orbited by rotation of the rotor.
  • the rotor of the motor which is a component required for driving the scroll compressor, may perform the functions of a crank shaft and a main frame.
  • components constituting the scroll compressor are integrated based on each assembly unit.
  • an orbiting scroll module is provided as a single component in which the orbiting scroll and a first projection are integrated
  • a second housing which is a component constituting the housing, is provided as a single component in which a fixed scroll and a second projection are integrated.
  • the scroll compressor includes a housing that has an accommodation space, that has an inlet porton one side of the housing in a length-wise direction of the housing and that has a discharge port on the other side of the housing in the length-wise direction of the housing, a motor that is accommodated in the accommodation space, a fixed scroll that is accommodated in the accommodation space and that is placed closer to the discharge port than to the motor, and an orbiting scroll module that is placed between the motor and the fixed scroll and that is engaged with the fixed scroll to form a compression chamber, wherein the motor includes a stator fixed to the housing, and a rotor placed outside of the stator in a diameter-wise direction of the stator and rotating around the stator, and wherein the orbiting scroll module is placed between the rotor and the fixed scroll, is directly connected to the rotor and is orbited by rotation of the rotor.
  • the rotor provided in an outer rotor-type motor may include a skirt that encircles the outer surface of the stator in the diameter-wise direction of the stator, and a rotation surface that is placed near the orbiting scroll module, that forms a flat surface facing the orbiting scroll module and that connects to the skirt.
  • the skirt and rotation surface of the rotor may rotate outside of the stator integrally, and the orbiting scroll module may be directly connected to the rotation surface and may be orbited by rotation of the rotation surface.
  • the motor may further include an eccentric shaft that is placed eccentrically with respect to the rotation surface, and the orbiting scroll module may be coupled to the eccentric shaft and may orbit along the eccentric shaft.
  • the orbiting scroll module may include an orbiting scroll that includes an orbiting head plate forming a flat surface parallel to the rotation surface and that includes an orbiting lap protruding from the orbiting head plate in a thickness-wise direction of the orbiting head plate, and a coupling groove that is concavely formed on one surface of the orbiting head plate facing the rotation surface.
  • the eccentric shaft may be rotatably inserted into and coupled to the coupling groove.
  • a driving bearing rotatably coupled to the eccentric shaft, may be fixed to the coupling groove.
  • the housing may include a first housing that includes the accommodation space, that includes an inlet port on one side of the first housing in a length-wise direction of the first housing and that includes an opening on the other side of the first housing in the length-wise direction of the first housing, and a second housing that is placed on the other side of the first housing, that covers the opening and that includes the discharge port.
  • the second housing may include a cover that covers the opening, and a coupler that forms a flat surface parallel to the outer circumferential surface of the first housing, that is coupled to the other side of the first housing in the length-wise direction of the first housing, and that couples the cover to the first housing.
  • the fixed scroll may be placed on the inner surface of the cover facing the motor or the orbiting scroll module in the accommodation space, and the discharge port may be connected with the fixed scroll while passing through the cover.
  • the orbiting scroll module may include a first projection protruding outward from the orbiting head plate in a diameter-wise direction of the orbiting head plate, and the scroll compressor may further include a second projection interfering with the first projection and blocking self-rotation of the orbiting scroll.
  • the first projection may protrude from the orbiting head plate toward the coupler
  • the second projection may protrude from the inner surface of the coupler toward the orbiting head plate
  • a plurality of first projections may be placed at regular intervals in a circumferential direction of the orbiting head plate.
  • a first insertion groove, into which the second projection is inserted, is formed between two adjacent first projections.
  • a plurality of second projections may be placed at regular intervals in a circumferential direction of the coupler.
  • a second insertion groove, into which the first projection is inserted, is formed between two adjacent second projections.
  • the first projection inserted into the second insertion groove and the second projection inserted into the first insertion groove interfere with each other to block self-rotation of the orbiting scroll.
  • the second projection may protrude from the inner circumferential surface of the coupler in the circumferential direction of the coupler while forming a curved surface
  • the first insertion groove may be formed concavely between two adjacent second projections while forming a curved surface corresponding to the shape of the second projection.
  • the first insertion groove may be formed by connecting surfaces of two adjacent first projections, which face each other, in the shape of a curved surface corresponding to the shape of the second projection.
  • first projection and the orbiting scroll may be integrally formed, and the second projection and the second housing may be integrally formed.
  • the orbiting scroll may include a suction port
  • the fixed scroll may include an exhaust port.
  • the suction port and the exhaust port may be connected to the discharge port.
  • the housing may include a supporter that is provided between the inlet port and the discharge port and that is fixed to one side of the first housing in the length-wise direction of the first housing.
  • the supporter may be placed at a rotation center of the rotor, the stator may be fixed to the outer surface of the supporter in a circumferential direction of the supporter, and the rotor may be rotatably coupled to the supporter.
  • the supporter may have the shape of a lying cylinder with one side in a length-wise direction thereof fixed to the first housing, and the scroll compressor may further include a main bearing that rotatably couples the rotation surface to the supporter.
  • the main bearing may contact one surface of the rotation surface facing the supporter, and may be fixed to the rotation surface.
  • a fixation rib that encircles the outer surface of the main bearing fixed to the rotation surface in a circumferential direction of the main bearing may protrude from one surface of the rotation surface facing the supporter.
  • the orbiting scroll module may include a back pressure hole that passes through the orbiting scroll, and that forms a passage connecting the compression chamber and a gap between the rotation surface and the orbiting head plate.
  • the back pressure hole may have the shape of a through hole that passes through the orbiting head plate in a thickness-wise direction of the orbiting head plate, and the orbiting scroll module may further include a sealing member that seals a gap between the rotation surface and the orbiting head plate while encircling the back pressure hole outside of the orbiting head plate in a diameter-wise direction of the orbiting head plate.
  • the scroll compressor of the present disclosure allows the orbiting scroll to directly connect to the rotor of an outer rotor-type motor and to orbit, and accordingly, the rotor of the motor, which is a component required for driving the scroll compressor, may perform the functions of a crank shaft and a main frame.
  • the effects of the scroll compressor are described as follows.
  • the present disclosure may provide a scroll compressor without a crank shaft and a main frame, which may reduce friction losses that might be increased due to the crank shaft and the main frame, and which may reduce the size of the scroll compressor, which would be otherwise increased due to space occupied by the crank shaft and the main frame, thereby enhancing performance of the scroll compressor and scaling down the scroll compressor.
  • the present disclosure may provide a scroll compressor without a crank shaft, in which the number of components required for supporting the crank shaft, assembly man-hours spent on manufacturing the scroll compressor, and the weight and size of the scroll compressor may be effectively reduced.
  • the present disclosure may provide a scroll compressor in which components constituting the scroll compressor are integrated based on each assembly unit, thereby reducing the number of components, assembly man-hours and manufacturing costs required for manufacturing a scroll housing, and making a scroll housing smaller.
  • FIG. 2 is a perspective view illustrating a scroll compressor according to an embodiment
  • FIG. 3 is a sectional view taken along line "I-I" in FIG. 2
  • FIG. 4 is a view schematically illustrating a moving path of refrigerants of the scroll compressor in FIG. 3 .
  • a scroll compressor 100 includes a housing 110, 120, a motor 130, a fixed scroll 140 and an orbiting scroll modulel50.
  • the housing 110, 120 defines an appearance of the scroll compressor 100 according to the embodiment.
  • An accommodation space configured to accommodate various components constituting the scroll compressor 100 is formed inside the housing 110,120.
  • the housing 110,120 formed in the shape of an approximately lying cylinder is provided as an example.
  • An inlet port110a may be formed on one side (referred to as "left side") of the housing 110,120, i.e., the bottom (referred to as “left bottom”) on one side of the housing 110,120 in a length-wise direction of the housing 110,120.
  • a discharge port 120a may be formed on the other side (referred to as "right side") of the housing 110,120, i.e., the bottom (referred to as "right bottom”) on the other side of the housing 110,120 in the length-wise direction of the housing 110,120.
  • the inlet port 110a is a passage formed in the housing 110,120 to introduce refrigerants into the housing 110,120
  • the discharge port 120a is a passage formed in the housing 110,120 to discharge refrigerants, compressed inside the housing 110,120, out of the housing 110,120.
  • the accommodation space of the housing 110,120 may be divided into a motor part (A) that is a space in which the motor 130 is installed, and a compression part (B) that is a space in which refrigerants are compressed.
  • a front housing that is connected to the right bottom 121 of the housing 110,120 and that covers the right side of the compression part (B) may be installed on the right side of the compression part (B).
  • a rear cover that is connected to the left bottom of the housing 110,120 and that accommodates an inverter may be installed on the left side of the motor part (A).
  • the inverter is provided as a control unit that controls driving of the scroll compressor 100.
  • the motor 130 is accommodated in the accommodation space of the housing 110,120, specifically, the motor part (A).
  • the motor 130 that includes a stator 131 and a rotor 135 may be provided in the form of an outer rotor-type motor.
  • a constant speed motor in which a rotor 135 rotates at constant speeds may be used as the motor 130.
  • an inverter motor in which rotational speed of the rotor 135 is variable may also be used as the motor 130.
  • the stator 131 is placed at the center of the motor 130 and is fixed to the housing 110,120. That is, the stator 131 is placed at the center of a radius of rotation of the motor 130 rather than the rotor 135, is coupled to a supporter 115 in the housing 110,120 and is fixed to the housing 110,120.
  • the rotor 135 may be placed outside of the stator 131 in a diameter-wise direction of the stator 131 and may rotate around the stator 131. That is, the motor 130 of the embodiment in the form of an outer rotor-type motor may be driven in the way that the rotor 135 outside of the stator 131 rotates around the stator 131.
  • the fixed scroll 140 is accommodated in the accommodation space of the housing 110,120, specifically, in the compression part (B).
  • the fixed scroll 140 is placed closer to the discharge port 120a than to the motor 130 placed in the motor part (A). That is, the fixed scroll 140 is placed near the right bottom 121 of the housing 110,120.
  • the orbiting scroll module 150 is placed between the motor 130 and the fixed scroll 140.
  • the orbiting scroll module 150 may include an orbiting scroll 160.
  • the orbiting scroll 160 is engaged with the fixed scroll 140 and forms a compression chamber.
  • the orbiting scroll module 150 including the above-described orbiting scroll 160 may be configured to directly connect with the rotor 135 and to orbit by rotations of the rotor 135. Description in relation to this is provided hereunder.
  • refrigerants are introduced into the scroll compressor 100 through the inlet port 110a.
  • the introduced refrigerants pass through the motor part (A), move toward the rotor 135, and then pass through the rotor 125 to be introduced to the compression part (B).
  • the refrigerants introduced into the compression part (B) are introduced into the compression chamber in which the orbiting scroll 160 and the fixed scroll 140 are engaged, and then are compressed.
  • the high-pressure refrigerants compressed in the compression chamber are discharged out of the scroll compressor 100 through the discharge port 120a.
  • a housing 110,120 may include a first housing 110 and a second housing 120 which are separately provided and are connected to each other.
  • the first housing 110 and the second housing 120 may be distinguished in a length-wise direction of the housing 110, 120.
  • the first housing 110 is placed on the left side of the housing 110, 120
  • the second housing 120 is placed on the right side of the housing 110, 120.
  • the first housing 110 may be placed on the right side of the housing 110, 120
  • the second housing 120 may be placed on the left side of the housing 110, 120 on the basis of positions of the motor 130, the fixed scroll 140, and the orbiting scroll module 150.
  • the first housing 110 occupies most of the area of the housing 110,120.
  • the first housing 110 is formed in the shape of an approximately lying cylinder.
  • the first housing 110 includes an accommodation space.
  • the motor part (A) occupies most of the area of the accommodation space formed in the first housing 110.
  • the left bottom 111 of the housing 110, 120 is placed on one side, i.e., on the left side of the first housing 110 in a length-wise direction of the first housing 110.
  • An opening is formed on the other side, i.e., on the right side of the first housing 110 in the length-wise direction of the first housing 110. That is, the first housing 110 may include an accommodation space and may have the shape of a lying cylinder with its right side open. Additionally, an inlet port 110a is also formed on the first housing 110.
  • the second housing 120 is placed on the other side, i.e., on the right side of the first housing 110 in the length-wise direction of the first housing 110.
  • the second housing 120 is coupled to the open right side of the first housing 110 and covers the opening. Most of the area of the accommodation space formed in the second housing 120 coupled to the first housing 110 is occupied by the compression part (B).
  • the right bottom 121 of the housing 110,120 is placed on the other side, i.e., on the right side of the second housing 120 in a length-wise direction of the second housing 120. Further, a discharge port 120a is formed on the second housing 120.
  • the second housing 120 may include a cover 121 and a coupler 125.
  • the cover 121 configured to cover the opening may have the shape of a circular plate including a circular shape corresponding to the shape of the opening.
  • the cover 121 may form the right bottom 121 of the housing 110, 120.
  • the discharge port 120a may be formed on the cover 121.
  • the coupler 125 is configured to form a surface parallel to the outer circumferential surface of the first housing 110.
  • the coupler 125 is formed in the way that extends from the rim of the cover 121 in a direction parallel to the outer circumferential surface of the first housing 110.
  • the coupler 125 formed as described above is coupled to the other side of the first housing 110 in the length-wise direction of the first housing 110, i.e., the right side of the first housing 110, on which the opening is formed, and couples the cover 121 to the first housing 110.
  • the housing 110,120 is formed in the way the first housing 110 on the left side of the housing 110,120 and the second housing 120 on the right side of the housing 110,120 are coupled to each other.
  • the housing 110,120 formed as described above accommodates components such as the motor 130, the orbiting scroll module 150, and the fixed scroll 140, which constitute the scroll compressor 100, in the accommodation space.
  • the housing 110,120 is comprised of the first housing 110 and the second housing 120 that are detachable. Accordingly, components such as the motor 130, and the orbiting scroll module 150 may be installed in the first housing 110 in the state in which the first housing 110 and the second housing 120 are separated. Then the first housing 110 and the second housing 120 are coupled. Thus, the scroll compressor 100 may be readily assembled.
  • the fixed scroll 140 is provided on the second housing 120. Accordingly, the housing 110,120 may be assembled and the fixed scroll 140 may be installed by simply coupling the second housing 120 to the first housing 110, at a time.
  • FIG. 5 is a sectional view taken along line "II-II" in FIG. 2 .
  • a motor 130 may include a stator 131 and a rotor 135 and may be provided in the form of an outer rotor-type motor. That is, in the embodiment, the stator 131 is placed inside the motor 130, and the rotor 135 is placed outside of the stator 131.
  • a supporter 115 is provided in the housing 110,120.
  • the supporter 115 is interposed between the inlet port 110a and the discharge port 120a, is fixed at one side of the first housing 110 in the length-wise direction of the first housing 110, and finally, is fixed onto the housing 110,120.
  • the supporter 115 may be formed in the shape of a lying cylinder with one side in a length-wise direction of thereof fixed to the left bottom 111 of the first housing 110. That is, the supporter 115 may have the shape of a lying cylinder extending from the left bottom 111 of the first housing 110 in the length-wise direction of the housing 110,120.
  • the supporter 115 is placed at the center of rotation of the motor 130, specifically, the rotor 135.
  • the stator 131 is fixed onto the outer surface of the above-described supporter 115 in a circumferential direction of the supporter 115. That is, the stator 131 may be inserted into and coupled to the supporter 115 and may be fixed into the housing 110,120 through a center hole formed in the stator 131. A coil may be fixed to the stator 131 in a concentrated winding manner.
  • the motor 130 in the form of an outer rotor-type motor according to the embodiment is provided with the rotor 135 placed outside of the stator 131 in a diameter-wise direction of the stator 131.
  • the rotor 135 may be configured to rotate around the stator 131 outside of the stator 131 and may include a skirt 136 and a rotation surface 137.
  • the skirt 136 is configured to wrap the outer sides of the stator 131 in the diameter-wise direction of the stator 131.
  • the skirt 136 may be formed in the shape of a pipe having a center hole, and may be placed at the outer sides of the stator 131 in the diameter-wise direction of the stator 131.
  • a plurality of magnets 138 may be placed in a circumference direction of the skirt 136 on the inner circumferential surface of the skirt 136, which faces the stator 131.
  • the rotation surface 137 is placed closer to the orbiting scroll module 150 than to the skirt 136.
  • the rotation surface 137 forms a flat surface that faces the orbiting scroll module 150, and connects with the skirt 136.
  • the rotor 135 may have a shape in which the rotation surface 137, formed in the shape of a circular plate, and the skirt 136, formed in the shape of a pipe having a center hole, are connected, i.e., a lying cylinder shape which has a space therein with one side in a length-wise direction thereof opened.
  • the rotor 135 may be formed in the way that the skirt 136 and the rotation surface 137 rotate integrally at the outer sides of the stator 131.
  • the below-described orbiting scroll module 150 may directly connect with the rotation surface 137 of the rotor 135 configured to rotate as described above, and may orbit by rotations of the rotor 135.
  • the rotor 135 may be rotatably coupled to the supporter 115 and may be rotatably supported inside the housing 110,120.
  • a main bearing 180 may be provided between the rotor 135 and the supporter 115.
  • the main bearing 180 is installed on the rotor 135 and is coupled to the supporter 115 such that the rotor 135 is rotatably supported by the supporter 115.
  • the rotation surface 137 is provided with a fixation rib 134 in order for the main bearing 180 to be installed in the rotor 135.
  • the main bearing 180 contacts one surface of the rotation surface137 facing the supporter 115 and is fixed to the rotation surface 137. Additionally, the fixation rib 134 that wraps the outer surface of the main bearing 180 in a circumferential direction of the main bearing 180 fixed to the rotation surface 137 protrudes from one surface of the rotation surface 137 facing the supporter 115.
  • the rotor 135 may be rotatably coupled to the supporter 115.
  • the motor 130 is provided with an eccentric shaft 139.
  • the eccentric shaft 139 is placed eccentrically with respect to the rotor 135, specifically, the rotation surface 137.
  • An orbiting scroll module 150 may be coupled to the eccentric shaft 139, and the orbiting scroll module 150 that is coupled to the eccentric shaft 139 may be orbited along the eccentric shaft 139. Detailed description in relation to this is provided hereunder.
  • FIG. 6 is a sectional perspective view illustrating a cross section taken along line "III-III'" in FIG. 2
  • FIG. 7 is an exploded perspective view separately illustrating an orbiting scroll module and a second housing according to an embodiment
  • FIG. 8 is a sectional perspective view separately illustrating a rotor and an orbiting scroll module according to an embodiment.
  • an orbiting scroll module 150 may include an orbiting scroll 160.
  • the orbiting scroll 160 may include an orbiting head plate 161 and an orbiting lap 163.
  • the orbiting head plate 161 is formed in the shape of an approximately circular plate and forms a flat surface approximately parallel to a flat surface formed by the right bottom 121 or a flat surface formed by the rotation surface 137. Additionally, the orbiting lap 163 protrudes from the orbiting head plate 161 in a thickness-wise direction of the orbiting head plate 161. The orbiting lap 163 protrudes from one surface of the orbiting head plate 161 (right surface of the orbiting head plate in FIG. 3 ) facing the right bottom 121 toward the right bottom 121, is engaged with the fixed scroll 140 and forms a compression chamber.
  • the orbiting scroll 160 may include a suction port 165.
  • the suction port 165 forms a passage for introducing refrigerants, introduced into the scroll compressor 100 through the inlet port 110a, into the compression chamber.
  • the suction port 165 may be penetratedly formed in the orbiting lap 163, and may be placed farther from a central portion of the compression chamber than a below-described exhaust port 145.
  • the suction port 165 may be formed in the fixed scroll 140 not in the orbiting scroll 160. In this case, the suction port 165 may be penetratedly formed in the fixed lap 143.
  • the orbiting scroll module 150 is provided with a coupling groove 162 for coupling the orbiting scroll module 150 to the motor 130.
  • the coupling groove 162 is concavely formed in a shape corresponding to the shape of the eccentric shaft 139 while concavely formed on one surface of the orbiting head plate 161 (the left surface of the orbiting head plate in FIG. 3 ) facing the rotation surface 137 of the rotor 135.
  • the eccentric shaft 139 may be rotatably inserted into and coupled to the coupling groove 162 formed as described above. Through an insertion-coupling between the coupling groove 162 and the eccentric shaft 139, the orbiting scroll module 150 and the rotor 135 may be rotatably coupled.
  • a driving bearing 185 may be provided between the orbiting scroll module 150 and the eccentric shaft 139 such that a rotatable coupling between the orbiting scroll module 150 and the rotor 135 may be smoothly performed.
  • the driving bearing 185 may be fixed into the coupling groove 162 and coupled to the eccentric shaft 139. Accordingly, the orbiting scroll module 150 may be rotatably supported by the rotor 135.
  • the orbiting scroll module 150 may directly connect to the rotor 135 and may receive driving force of the motor 130. That is, unlike an orbiting scroll module in a conventional scroll compressor, which receives driving force of a motor through a crank shaft (5; ref. FIG. 1 ) provided in the motor, the orbiting scroll module 150 may directly receive driving force of the motor through the rotor 135 to orbit by directly connecting to the rotor 135.
  • the rotation surface 137 of the rotor 135 forms a flat surface parallel to the orbiting head plate 161. Accordingly, the orbiting scroll module 150 may be stably coupled to the rotor 135 in the way that the orbiting head plate 161 contacts the rotation surface 137.
  • the orbiting scroll module 150 may be coupled to the rotor 135 more stably.
  • the orbiting scroll module 150 rotatably connects to the rotor 135. Accordingly, the orbiting scroll 160 orbits along a trajectory of rotation of the eccentric shaft 139 eccentrically placed.
  • the orbiting scroll module 150 is provided with a first projection 170 as a structure for blocking self-rotation of the orbiting scroll 160.
  • the first projection 170 blocks self-rotation of the orbiting scroll 160 by interfering with a below-described second projection 175. Structures and operations of the first projection 170 and the second projection 175 are specifically described hereunder.
  • the orbiting scroll module 150 may be provided with a back pressure hole 167.
  • the back pressure hole 167 is passage that is provided on the orbiting scroll 160 such that some of the refrigerants, introduced into the compression chamber, may be discharged out of the compression chamber.
  • the back pressure hole 167 may be formed in the shape of a through hole that passes through the orbiting head plate 161 in a thickness-wise direction of the orbiting head plate 161.
  • a passage that discharges some of the refrigerants, introduced into the compression chamber, out of the compression chamber through another passage not through the exhaust port 145 may be formed on the orbiting scroll 160 by the back pressure hole 167.
  • the orbiting scroll module 150 may further include a sealing member 190.
  • the sealing member 190 is interposed between the orbiting head plate 161 and the rotation surface 137, and is formed in the way that encircles the back pressure hole 167 from outer sides of the orbiting head plate 161 in a diameter-wise direction of the orbiting head plate 161.
  • a sealed space (referred to as "back pressure chamber), encircled by the orbiting head plate 161, the rotation surface 137 and the sealing member 190, is formed between the orbiting scroll 160 and the rotor 135.
  • Refrigerants discharged through the back pressure hole 167 from the compression chamber, may be introduced into the back pressure chamber that is formed as a sealed space.
  • the refrigerants introduced into the back pressure chamber through the back pressure hole 167 may serve as a pressure generating source for generating pressure that presses the orbiting scroll 160 against the fixed scroll 140 closely while widening a gap between the orbiting scroll 160 and the rotor 135.
  • the back pressure hole 167 is formed in the orbiting scroll 160, and the back pressure chamber is formed between the orbiting scroll 160 and the rotor 135 by the sealing member 190. Accordingly, the orbiting scroll 160 may be effectively pressed against the fixed scroll 140, and when the orbiting scroll 160 orbits, friction losses, caused by friction between the orbiting scroll 160 and the rotor 135, may be reduced.
  • a fixed scroll 140 may include a fixed head plate 141 and a fixed lap 143.
  • the fixed head plate 141 is formed in the shape of an approximately circular plate and forms a flat surface approximately parallel to a flat surface formed by the right bottom 121. Additionally, the fixed lap 143 protrudes from the fixed head plate 141 in a thickness-wise direction of the fixed head plate 141. The fixed lap 143 protrudes from one surface of the fixed head plate 141 facing the motor 130 toward the motor 130, is engaged with the orbiting scroll 160 and forms a compression chamber.
  • the fixed scroll 140 may include an exhaust port 145.
  • the exhaust port 145 forms a passage for discharging refrigerants, introduced into the compression chamber, out of the compression chamber.
  • the exhaust port 145 may be penetratedly formed in the fixed head plate 141, and maybe placed closer to a central portion of the compression chamber than the suction port 165.
  • the exhaust port 145 connects with the discharge port 120a provided on the right bottom 121 of the second housing 120. Accordingly, high-pressure refrigerants, which are discharged out of the compression chamber through the exhaust port 145 after compressed in the compression chamber, may be discharged out of the scroll compressor 100 through the discharge port 120a.
  • the fixed scroll 140 is placed on the inner surface of the cover 121 facing the motor 130 or the orbiting scroll module 150 while placed in the accommodation space of the housing 110,120.
  • the discharge port 120a is formed to connect with the fixed scroll 140 while passing through the cover 121.
  • the discharge port 120a formed in the way that passes through the cover 121 at a position in which the discharge port 120a may connect with the exhaust port 145, may connect with the exhaust port 145, and high-pressure refrigerants compressed in the compression chamber may be discharged out of the scroll compressor 100 through the exhaust port 145 and the discharge port 120a.
  • the fixed scroll 140 and the housing 110,120, specifically, the second housing 120 are integrally formed.
  • a partial area of the cover 121 of the second housing 120 becomes the fixed head plate 141, and the fixed lap 143 is formed to protrude from the partial area of the cover 121 serving as the fixed head plate 141.
  • the exhaust port 145 and the discharge port 120a are all formed on the cover 121. Considering this, the exhaust port 145 and the discharge port 120a may be finally included in a single hole formed on the cover 121.
  • FIG. 9 is a view schematically illustrating structures of a first projection and a second projection according to an embodiment
  • FIG. 10 is a view illustrating a mechanism for suppressing self-rotation of the orbiting scroll module in FIG. 9 .
  • the scroll compressor 100 is provided with a structure for blocking self-rotation of the orbiting scroll module 150.
  • a first projection 170 and a second projection 175 are provided in the scroll compressor 100 as a structure for blocking self-rotation of the orbiting scroll module 150.
  • the first projection 170 is provided in the orbiting scroll module 150.
  • the first projection 170 protrudes from the orbiting head plate 161 toward the coupler 125.
  • the first projection 170 protrudes from the outer circumferential surface of the orbiting head plate161 outward in a diameter-wise direction of the orbiting head plate 161.
  • the orbiting scroll module 150 is provided with a plurality of first projections 170.
  • the plurality of first projections 170 are placed at regular intervals in a circumferential direction of the orbiting head plate 161. That is, the plurality of first projections 170 are radially placed on the outer side of the orbiting head plate 161, and each first projection 170 is spaced a certain distance apart from another adjacent first projection 170.
  • a first insertion groove 171 is formed between the first projections 170 placed as described above.
  • the first insertion groove 171 is interposed between two adjacent first projections 170, and corresponds to a concave shape portion that is naturally formed between the first projections 170 because each first projection 170 protrudes from the outer side of the orbiting head plate 161. That is, each first projection 170 and each first insertion groove 171 are alternately placed in a circumferential direction of the orbiting head plate 161 on the outer circumferential surface of the orbiting head plate 161.
  • the first insertion groove 171 is provided as an area in which a below-described second projection 175 is inserted between the first projections 170.
  • the second projection 175 is provided in the housing 110,120, specifically, in the second housing 120.
  • the second projection 175 protrudes in a direction from the inner circumferential surface of the coupler 125 toward a central portion of the coupler 125 in a diameter-wise direction of the coupler 125.
  • the second projection 175 protrudes in a direction from the inner circumferential surface of the coupler 125 to the orbiting head plate 161.
  • the second housing 120 is provided with a plurality of second projections 175.
  • the plurality of second projections 175 are placed at regular intervals in a circumferential direction of the coupler 125. That is, the plurality of second projections 175 are radially placed on the inner circumferential surface of the coupler 125, and each second projection 175 is spaced a certain distance apart from another adjacent second projection 175.
  • a second insertion groove 176 is formed between the second projections 175 placed as described above.
  • the second insertion groove 176 is interposed between two adjacent second projections 175, and corresponds to a concave shape portion that is naturally formed between the second projections 175 because each second projection 175 protrudes from the inner circumferential surface of the coupler 125. That is, each second projection 175 and each second insertion groove 176 are alternately placed in a circumferential direction of the coupler 125 on the inner circumferential surface of the coupler 125.
  • the second insertion groove 176 is provided as an area in which the first projection 170 is inserted between the second projections 175.
  • the first projection 170 and the second projection 175 are placed at a position in which a position of the first projection 170 and a position of the second projection 175 in the length-wise direction of the housing 110,120 are overlapped with each other.
  • the first projection 170 and the second projection 175 are placed in the way that a position of the first projection 170 and a position of the second projection 175 in the circumferential direction of the housing 110,120 are not overlapped with each other. Accordingly, each of the first projections 170 is inserted into each of the second insertion grooves 176, and each of the second projections 175 is inserted into each of the first insertion grooves 171.
  • the first projection 170 inserted into the second insertion groove 176 also orbits along the orbiting scroll 160.
  • the first projection 170 inserted into the second insertion groove 176 and the second projection 175 inserted into the first insertion groove 171 interfere with each other. Through the interference between the first projection 170 and the second projection 175, self-rotation of the orbiting scroll 160 may be blocked.
  • a width of the first projection 170 in the circumferential direction of the orbiting head plate 161 is narrower than a gap between two adjacent first projections 170. That is, the first projection 170 has a width narrower than a width of the second insertion groove 176, and the second projection 175 has a width narrower than a width of the first insertion groove 171.
  • the interference between the first projection 170 and the second projection 175 self-rotation of the orbiting scroll 160 is only blocked, and enough space for the first projection 170 to orbit inside the second insertion groove 176 may be ensured in the second insertion groove 176.
  • each of the second projections 175 may protrude such that a surface of the second projection 175, which contacts the first projection 170, may form a curved surface when the first projection 170 and the second projection 175 interfere with each other.
  • each of the first insertion grooves 171 forms a concavely curved surface corresponding to the shape of the second projection 175 protruding to form a curved surface, while being concavely formed between two adjacent first projections 170.
  • the shape of the first insertion groove 171 may be formed by connecting surfaces of two adjacent first projections 170, which face each other, in the shape of a curved surface corresponding to the shape of the second projection 175.
  • the first projection 170 and the second projection 175 may keep interfering with each other while smoothly sliding. Accordingly, the orbiting scroll 160 may orbit more smoothly and effectively in the state in which self-rotation of the orbiting scroll 160 is blocked.
  • the orbiting scroll module 150 may have a structure in which the orbiting scroll 160 and the first projection 170 are integrally formed.
  • the second housing 120 may have a structure in which the second housing 120, the fixed scroll 140 and the second projection 175 are integrally formed rather than a structure that is comprised only of the second housing 120.
  • the rotor 135 may have a structure in which the rotor 135, the fixation rib 134 and the eccentric shaft 139 are integrally formed rather than a structure which is comprised only of the rotor 135.
  • the rotor 135 includes the fixation rib 134 that is a component for allowing the rotor 135 to rotate around the stator 131, and the eccentric shaft 139 that is a component for delivering rotational force of the rotor 135 to the orbiting scroll 160 as well as the skirt 136 and the rotation surface 137 that are basic components of the rotor 135.
  • the fixation rib 134 and the eccentric shaft 139 are not components separate from the rotor 135. Rather, the fixation rib 134, the eccentric shaft 139 and the rotor 135 are integrally formed. That is, the rotor 135, the fixation rib 134, and the eccentric shaft 139 are formed as a single component.
  • the orbiting scroll module 150 includes a coupling groove 162 that is a component for coupling the orbiting scroll 160 to the eccentric shaft 139, the first projection 170 that is a component for blocking self-rotation of the orbiting scroll 160 as well as the orbiting scroll 160 that is a basic component of the orbiting scroll module 150.
  • the coupling groove 162 and the first projection 170 are not components separate from the orbiting scroll 160. Rather, the coupling groove 162, the first projection 170 and the orbiting scroll 160 are integrally formed. That is, the orbiting scroll 160 including the coupling groove 162 and the first projection 170 are formed as a single component.
  • the integration of the orbiting scroll 160 including the coupling groove 162 and the first projection 170 was determined on the basis of whether the orbiting scroll 160 including the coupling groove 162 and the first projection 170 may be integrally formed.
  • the shape in which the orbiting scroll 160 and the first projection 170 are coupled may be a shape that is readily formed into one piece through a process such as casting and the like, considering the shapes of the orbiting scroll 160 and the first projection 170. Accordingly, the orbiting scroll module 150 may have a structure in which the orbiting scroll 160 and the first projection 170 are integrally formed through a process such as casting and the like.
  • the fixed scroll 140 and the second projection 175 are not components separate from the second housing 120.
  • the fixed scroll 140, the second projection 175 and the second housing 120 are integrally formed. That is, the second housing 120, the fixed scroll 140 and the second projection 175 are formed as a single component.
  • the integration of the second housing 120, the fixed scroll 140 and the second projection 175 was also determined on the basis of whether the second housing 120, the fixed scroll 140 and the second projection 175 may be integrally formed.
  • a shape in which the second housing 120, the fixed scroll 140 and the second projection 175 are coupled may also be an integrated shape that is readily formed through a process such as casting and the like, considering the shapes of the second housing 120, the fixed scroll 140 and the second projection 175.
  • the second housing 120 may have a structure in which the second housing 120, the fixed scroll 140 and the second projection 175 are integrally formed through a process such as casting and the like.
  • the motor 130 provided with the rotor 135 in which the rotor135, the fixation rib 134 and the eccentric shaft 139 are integrally formed is referred to as a first component
  • the orbiting scroll module 150 is referred to as a second component
  • a structure in which the second housing 120, the fixed scroll 140 and the second projection 175 are integrally formed is referred to as a third component.
  • assembly of main components installed in the motor part (A) and main components installed in the compression part (B) may be mostly completed simply by assembling the first component, the second component, and the third component.
  • assembly of main components installed in the motor part (A) may be completed by inserting the stator 131 into the supporter 115 and by fixing the first component to the accommodation space of the housing 110, 120.
  • assembly of main components installed in the compression part (B) may be completed simply by inserting the eccentric shaft 139 into the coupling groove 162 and coupling the orbiting scroll module 150 to the rotor 135, and by coupling the second housing 120 to the first housing 110 to engage the orbiting scroll 160 with the fixed scroll 140 and to engage the first projection 170 with the second projection 175.
  • components of the motor part (A) and the compression part (B) may be installed quickly and readily by assembling the first housing 110 and the first component, coupling the second component to the first component, and then coupling the third component to the first housing 110.
  • each of the components may be easily formed through a process such as casting and the like.
  • the components may be readily manufactured and costs of manufacturing the components may be reduced.
  • the number of components required for manufacturing the scroll compressor 100 may be reduced.
  • man-hours spend on assembling the components may be reduced, and the components may be managed easily and efficiently.
  • the scroll compressor of the embodiment differs from a conventional scroll compressor in the configuration of a motor and the absence of a main frame.
  • the conventional scroll compressor as illustrated in FIG. 1 , includes a main frame 6 between a space in which a driving motor 4 is installed and a space in which a compression chamber (P) is formed to separate a suction space (S1) from a discharge space (S2).
  • the conventional scroll compressor is provided with the driving motor 4, i.e., an interior rotor-type motor in which a stator 41 is placed outside of the motor and in which a rotor 42 is placed inside the stator 41.
  • a crank shaft 5 is used to deliver driving force of the driving motor 4 to an orbiting scroll 3.
  • the crank shaft 5 is required to pass through the main frame 6 that blocks between the driving motor 4 and the orbiting scroll 3.
  • a shaft seal for sealing the circumference of the crank shaft 5 is installed in the portion through which the crank shaft 5 passes. In this case, friction losses caused by friction between the installed shaft seal and the crank shaft 5 increases.
  • the size of the scroll compressor increases because the main frame 6 is placed inside the scroll compressor. Further, a bearing and the like are added to rotatably support the crank shaft 5 in the portion in which the crank shaft 5 passes through the main frame 6. As a result, the number of components and the size of the scroll compressor are increased.
  • the conventional scroll compressor is provided with a sub frame 8 in addition to the main frame 6 to stably support the crank shaft 5. Accordingly, a bearing and the like are added to rotatably support the crank shaft 5 in the portion in which the crank shaft 5 passes through the sub frame 8. As a result, the number of components and the size of the scroll compressor are increased.
  • the scroll compressor 100 of the embodiment includes an outer rotor-type motor 130 rather than an interior rotor-type motor as a driving part for orbiting the orbiting scroll 160.
  • the motor 130 and the orbiting scroll 160 are not connected by a crank shaft.
  • the orbiting scroll 160 is directly connected to the rotor 135 of the motor 130. That is, driving force of the motor 130 is not delivered by the crank shaft.
  • the driving force of the motor 130 is directly delivered by the rotor 135 directly connected with the orbiting scroll 160.
  • the scroll compressor 100 of the embodiment does not require a shaft seal for sealing the circumference of a crank shaft in the portion through which the crank shaft passes, and does not require a bearing and the like for rotatably supporting the crank shaft in the portion through which the crank shaft passes.
  • the scroll compressor 100 of the embodiment causes no increase in friction losses resulting from friction between a shaft seal and a crank shaft, no increase in the number of components resulting from the installation of a crank shaft, and no increase in the size of the scroll compressor.
  • the scroll compressor 100 excludes a crank shaft and components in relation to the crank shaft. Accordingly, the scroll compressor 100 may be manufacture using a small number of components with enhanced efficiency, and may compact.
  • the rotation surface 137 of the rotor 135, which is coupled to the orbiting scroll 160 in the way that the rotation surface 137 contacts the orbiting scroll 160 may function as the main frame of the conventional scroll compressor.
  • the rotation surface 137 of the rotor 135 is placed at a boundary between the motor part (A) and the compression part (B).
  • the rotation surface 137 of the rotor 135 may serve as a wall that crosses between the motor part (A) and the compression part (B).
  • the rotor 135 of the motor 130 may function as a wall that separates a suction space of refrigerants from a discharge space of refrigerants while crossing between the motor part (A) and the compression part (B). Accordingly, the scroll compressor 100 does not require an additional component such as the main frame of a conventional scroll compressor.
  • the scroll compressor 100 of the embodiment may be scaled down because a space occupied by a main frame is excluded, thereby making it possible to provide a scroll compressor more compact than a conventional one.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP20154795.7A 2019-02-01 2020-01-31 Spiralverdichter Withdrawn EP3690247A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020190014115A KR20200095995A (ko) 2019-02-01 2019-02-01 스크롤 압축기

Publications (1)

Publication Number Publication Date
EP3690247A1 true EP3690247A1 (de) 2020-08-05

Family

ID=69423113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20154795.7A Withdrawn EP3690247A1 (de) 2019-02-01 2020-01-31 Spiralverdichter

Country Status (3)

Country Link
US (1) US20200248692A1 (de)
EP (1) EP3690247A1 (de)
KR (1) KR20200095995A (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4795323A (en) * 1987-11-02 1989-01-03 Carrier Corporation Scroll machine with anti-rotation mechanism
US20020039540A1 (en) * 2000-09-29 2002-04-04 Kazuhiro Kuroki Scroll type compressor and method for compressing gas
US20070231173A1 (en) * 2006-03-29 2007-10-04 Aisin Seiki Kabushiki Kaisha Scroll compressor
KR20120062415A (ko) * 2010-12-06 2012-06-14 한라공조주식회사 스크롤 압축기
KR20180075354A (ko) * 2016-12-26 2018-07-04 엘지전자 주식회사 전동식 압축기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4795323A (en) * 1987-11-02 1989-01-03 Carrier Corporation Scroll machine with anti-rotation mechanism
US20020039540A1 (en) * 2000-09-29 2002-04-04 Kazuhiro Kuroki Scroll type compressor and method for compressing gas
US20070231173A1 (en) * 2006-03-29 2007-10-04 Aisin Seiki Kabushiki Kaisha Scroll compressor
KR20120062415A (ko) * 2010-12-06 2012-06-14 한라공조주식회사 스크롤 압축기
KR20180075354A (ko) * 2016-12-26 2018-07-04 엘지전자 주식회사 전동식 압축기

Also Published As

Publication number Publication date
US20200248692A1 (en) 2020-08-06
KR20200095995A (ko) 2020-08-11

Similar Documents

Publication Publication Date Title
KR102243681B1 (ko) 스크롤 압축기
KR102226456B1 (ko) 압축기
CN114857001A (zh) 涡旋式压缩机
KR20130102356A (ko) 횡형 스크롤 압축기
EP3617510A1 (de) Motorbetriebener verdichter
US11181109B2 (en) Scroll compressor
US20200102956A1 (en) Motor operated compressor
EP3690247A1 (de) Spiralverdichter
EP3567212A1 (de) Verdichter mit oldham-ring
KR102392655B1 (ko) 냉매의 토출 유로와 오일 회수 유로를 분리한 압축기
CN215409189U (zh) 涡旋式压缩机
KR101442547B1 (ko) 스크롤 압축기
US11434908B2 (en) Compressor having lubrication structure for thrust surface
US11441562B2 (en) Scroll compressor having noise reduction structure
KR20180117470A (ko) 전동식 압축기
EP3599380A1 (de) Elektrisch angetriebene verdichter
KR20210029038A (ko) 전동식 압축기
KR102232270B1 (ko) 전동식 압축기
CN114941625B (zh) 涡旋式压缩机
CN114941622B (zh) 涡旋式压缩机及具备该涡旋式压缩机的空调装置
KR102309304B1 (ko) 압축기
KR102492951B1 (ko) 올담링을 구비한 압축기
US8939741B2 (en) Scroll compressor
US20220056910A1 (en) Scroll compressor
KR102548470B1 (ko) 올담링을 구비한 압축기

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200229

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20210206