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WO2022240060A1 - Compresseur à spirales - Google Patents

Compresseur à spirales Download PDF

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Publication number
WO2022240060A1
WO2022240060A1 PCT/KR2022/006372 KR2022006372W WO2022240060A1 WO 2022240060 A1 WO2022240060 A1 WO 2022240060A1 KR 2022006372 W KR2022006372 W KR 2022006372W WO 2022240060 A1 WO2022240060 A1 WO 2022240060A1
Authority
WO
WIPO (PCT)
Prior art keywords
eccentric
eccentric bush
orbiting scroll
hole
rotating shaft
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.)
Ceased
Application number
PCT/KR2022/006372
Other languages
English (en)
Korean (ko)
Inventor
송세영
김광진
김옥현
이성명
홍기상
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.)
Hanon Systems Corp
Original Assignee
Hanon Systems Corp
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 Hanon Systems Corp filed Critical Hanon Systems Corp
Publication of WO2022240060A1 publication Critical patent/WO2022240060A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—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
    • 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
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C2240/10—Stators
    • 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
    • F04C2240/50—Bearings
    • 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
    • F04C2240/60—Shafts
    • 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
    • F05B2240/10—Stators
    • 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
    • F05B2240/20—Rotors
    • 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
    • F05B2240/60—Shafts

Definitions

  • the present invention relates to a scroll compressor, and more particularly, to a scroll compressor that includes a fixed scroll and an orbiting scroll that forms a compression chamber together with the fixed scroll and performs an orbital motion to compress a refrigerant.
  • an air conditioning unit for cooling and heating the interior of a vehicle is installed.
  • A/C air conditioning unit
  • a component of a cooling system such an air conditioner includes a compressor that compresses a low-temperature, low-pressure gaseous refrigerant introduced from an evaporator into a high-temperature, high-pressure gaseous refrigerant and sends it to a condenser.
  • Compressors include a reciprocating type that compresses refrigerant according to the reciprocating motion of a piston and a rotary type that compresses refrigerant while rotating.
  • the reciprocating type there is a crank type that uses a crank to transmit to a plurality of pistons according to the transmission method of the drive source, a swash plate type that transmits to a rotating shaft with a swash plate installed, and the like.
  • scrolling types that use orbiting scrolls and fixed scrolls.
  • Scroll compressors are widely used for refrigerant compression in air conditioners, etc., because of the advantages of obtaining a relatively high compression ratio compared to other types of compressors and obtaining stable torque by smooth refrigerant suction, compression, and discharge strokes.
  • FIG. 1 is a cross-sectional view showing a scroll compressor according to an exemplary embodiment in the related art.
  • the compressor according to the related art has a rotary shaft 30 and an eccentric part 42 eccentric to the rotary shaft 30, and an eccentric bush 40 rotated together with the rotary shaft 30. ), the pin 80 fastening the eccentric bush 40 to the rotational shaft 30, the orbiting scroll 50 that is rotated by the eccentric part 42, and the compression chamber together with the orbiting scroll 50 It includes a fixed scroll (60) and a bearing (70) interposed between the eccentric part (42) and the orbiting scroll (50), and the bearing (70) is the boss part (53) of the orbiting scroll (50).
  • the outer diameter of the outer ring 72 is smaller than that of the boss portion 53 so that the orbiting scroll 50 is not deformed.
  • FIG. 2 is a cross-sectional view showing a scroll compressor according to another conventional embodiment.
  • the scroll compressor according to another conventional embodiment has a different bearing compared to the scroll compressor according to the conventional one embodiment shown in FIG. 1 . That is, the bearing 70' is formed of a plain bearing whose inner circumferential surface is in sliding contact with the eccentric portion 42 and whose outer circumferential surface is press-fitted into the boss portion 53.
  • the eccentric bush 40 further includes a recess portion 41 into which the rotary shaft 30 is inserted, and, for example, during initial driving, the turning scroll 50 and the turning scroll 50 due to liquid refrigerant compression In order to prevent the fixed scroll 60 from being damaged, a rotational gap is formed between the inner circumferential surface of the recessed portion 41 and the outer circumferential surface of the rotating shaft 30 .
  • the pin 80 is press-fitted with the rotary shaft 30 but not press-fitted with the eccentric bush 40 so that the eccentric bush 40 can rotate relative to the rotary shaft 30 .
  • the eccentric bush 40 includes an eccentric bush hole 44 penetrated by the pin 80
  • the rotation shaft 30 includes a rotation shaft hole 33 press-fitted with the pin 80,
  • the outer diameter of the pin 80 is greater than or equal to the inner diameter of the rotating shaft hole 33 and smaller than the inner diameter of the eccentric bush hole 44 .
  • the eccentric bush 40 is moved in the axial direction of the rotating shaft 30 and the orbiting scroll 50 and or the eccentric bush 40 is tilted with respect to the rotating shaft 30 and makes abnormal contact with the bearings 70 and 70', causing the eccentric bush 40, the orbiting scroll 50 and the bearing 70 , 70') had a problem in that damage occurred.
  • an object of the present invention is to provide a scroll compressor capable of suppressing deterioration in cost and durability while preventing deformation of an orbiting scroll by bearings.
  • the present invention is to provide a scroll compressor capable of preventing damage to the eccentric bush, the orbiting scroll and the bearing due to the abnormal behavior of the eccentric bush when the eccentric bush is formed to be capable of relative rotational movement with respect to the rotating shaft. The purpose.
  • a rotating shaft that is rotated by receiving power; an eccentric bush having an eccentric portion eccentric to the rotating shaft and rotating together with the rotating shaft; an orbiting scroll that is rotated by the eccentric part; a fixed scroll forming a compression chamber together with the orbiting scroll; and a bearing interposed between the eccentric portion and the orbiting scroll, wherein the bearing includes a plain bearing unit in sliding contact with the eccentric portion and a ring unit press-fitted with the plain bearing unit and inserted into the orbiting scroll.
  • the orbiting scroll includes an annular boss portion, the ring unit is formed in an annular shape extending along an inner circumferential surface of the boss portion, and the plain bearing unit is formed in an annular shape extending along an outer circumferential surface of the eccentric portion and an inner circumferential surface of the ring unit.
  • the outer diameter of the plain bearing unit may be greater than or equal to the inner diameter of the ring unit, and the outer diameter of the ring unit may be smaller than the inner diameter of the boss.
  • the ring unit may be inserted into the boss part after being press-fitted with the plain bearing unit.
  • the ring unit may further include a separation preventing member preventing separation from the boss portion.
  • the separation preventing member may be formed of a snap ring, and a groove into which the snap ring is inserted may be formed on an inner circumferential surface of the boss portion.
  • the orbiting scroll may further include a back pressure chamber pressurizing the orbiting scroll toward the fixed scroll, and the orbiting scroll may include a communication hole communicating an inside of the boss and the back pressure chamber.
  • the communication hole may include a first communication hole for guiding oil in the back pressure chamber to the inside of the boss and a second communication hole for guiding oil in the boss to the back pressure chamber.
  • a pin fastening the eccentric bush to the rotating shaft, the pin penetrating the eccentric bush and extending from the first portion coupled to the rotating shaft and limiting axial movement of the eccentric bush It may include a second part.
  • a rotating shaft that is rotated by receiving power; an eccentric bush having an eccentric portion eccentric to the rotating shaft and rotating together with the rotating shaft; an orbiting scroll that is rotated by the eccentric part; a fixed scroll forming a compression chamber together with the orbiting scroll; and a pin fastening the eccentric bush to the rotating shaft, wherein the pin penetrates the eccentric bush and is coupled to the rotating shaft, and extends from the first portion to limit axial movement of the eccentric bush.
  • a scroll compressor comprising a second part to do.
  • the eccentric bush includes a first eccentric bush hole accommodating a part of the first part, and the rotation shaft includes a rotation shaft hole fastened with the other part of the first part, and the outer diameter of the first part is the diameter of the rotation shaft hole. It may be greater than or equal to the inner diameter and smaller than the inner diameter of the first eccentric bush hole.
  • the second portion may be formed on an opposite side of the rotation shaft hole based on the first eccentric bush hole, and an outer diameter of the second portion may be larger than an inner diameter of the first eccentric bush hole.
  • the eccentric bush further includes a second eccentric bush hole accommodating the second part, the inner diameter of the second eccentric bush hole is larger than the outer diameter of the second part, and the first eccentric bush hole and the second eccentric bush hole A stepped surface contactable with the second portion may be formed between the eccentric bush holes.
  • the scroll compressor according to the present invention includes a rotating shaft that is rotated by receiving power; an eccentric bush having an eccentric portion eccentric to the rotating shaft and rotating together with the rotating shaft; an orbiting scroll that is rotated by the eccentric part; a fixed scroll forming a compression chamber together with the orbiting scroll; and a bearing interposed between the eccentric portion and the orbiting scroll, wherein the bearing includes a plain bearing unit in sliding contact with the eccentric portion and a ring unit press-fitted with the plain bearing unit and inserted into the orbiting scroll Accordingly, deterioration in cost and durability can be suppressed while preventing deformation of the orbiting scroll by the bearing.
  • the scroll compressor according to the present invention further includes a pin fastening the eccentric bush to the rotating shaft, wherein the pin passes through the eccentric bush and extends from a first portion coupled to the rotating shaft and the first portion. and a second part limiting the movement of the eccentric bush in the axial direction, when the eccentric bush is formed to be capable of relative rotational movement with respect to the rotating shaft, the eccentric bush and the orbiting scroll are caused by abnormal behavior of the eccentric bush. And it is possible to prevent damage to the bearing.
  • FIG. 1 is a cross-sectional view showing a scroll compressor according to a conventional embodiment
  • FIG. 2 is a cross-sectional view showing a scroll compressor according to another conventional embodiment
  • FIG. 3 is a cross-sectional view showing a scroll compressor according to an embodiment of the present invention.
  • FIG. 4 is an enlarged view of part A of FIG. 3;
  • Figure 5 is an exploded perspective view showing the orbiting scroll, plain bearing unit, ring unit and separation preventing member of Figure 4;
  • FIG. 6 is a cross-sectional view illustrating a orbiting scroll, a plain bearing unit, a ring unit, and a separation preventing member in a scroll compressor according to another embodiment of the present invention.
  • Figure 3 is a cross-sectional view showing a scroll compressor according to an embodiment of the present invention
  • Figure 4 is an enlarged view of part A of Figure 3
  • Figure 5 is a turning scroll, plain bearing unit, ring unit and separation prevention member of Figure 4 It is an exploded perspective view showing.
  • the scroll compressor includes a casing 100, a motor 200 generating driving force inside the casing 100, and the motor 200.
  • the rotating shaft 300 rotated by the rotating shaft 300, the eccentric bush 400 converting the rotational motion of the rotating shaft 300 into an eccentric rotational motion, the orbiting scroll 500 orbiting by the eccentric bush 400, the orbiting scroll ( 500) to form a compression chamber together with the orbiting scroll 500, a fixed scroll 600, a bearing 700 rotatably supporting the orbiting scroll 500 with respect to the eccentric bush 400, and
  • a pin 800 fastening the eccentric bush 400 to the rotation shaft 300 may be included.
  • the casing 100 includes a space S1 accommodating the motor 200, a space S2 accommodating the orbiting scroll 500 and the fixed scroll 600, and a space accommodating the motor 200 ( S1) and a main frame 110 partitioning a space S2 in which the orbiting scroll 500 and the fixed scroll 600 are accommodated.
  • the space S1 in which the motor 200 is accommodated may communicate with a refrigerant inlet pipe (not shown).
  • the space S2 accommodating the orbiting scroll 500 and the fixed scroll 600 includes a suction chamber S21 in which the refrigerant to be sucked into the compression chamber is temporarily accommodated and the refrigerant discharged from the compression chamber is temporarily accommodated.
  • a discharge chamber (S22) may be included.
  • the main frame 110 has a shaft hole 112 passed through by the rotating shaft 300, communicates with the shaft hole 112 and accommodates the eccentric bush 400, and operates the orbiting scroll 500 as the fixed scroll. It may include a back pressure chamber 114 that pressurizes the side of 600 and a communication passage (not shown) communicating the space S1 accommodating the motor 200 and the suction chamber S21.
  • the casing 100 communicates with the discharge chamber S22 and the refrigerant discharge pipe (not shown) to guide the oil-separated refrigerant to the outside of the casing 100 after separating the oil from the compressed refrigerant.
  • An oil separation space (S3) may be further included.
  • an oil return passage P for guiding the oil in the oil separation space S3 to the space S1 accommodating the motor 200 and the back pressure chamber 114 may be formed.
  • the motor 200 may include a stator 210 fixed to the casing 100 and a rotor 220 rotated by interaction with the stator 210 inside the stator 210 .
  • the rotary shaft 300 is formed in a cylindrical shape penetrating the shaft hole 112, one end of the rotary shaft 300 is coupled to the eccentric bush 400, and the other end of the rotary shaft 300 is the rotor (220) can be combined.
  • one end of the rotating shaft 300 is an outer circumferential surface (hereinafter, an outer circumferential surface 310 of the rotating shaft 300) opposite to the inner circumferential surface 414 of the recessed portion 410 to be described later, and a recessed portion 410 to be described later.
  • the front end face 320 of the rotation shaft 300 opposite to the base surface 412 (hereinafter referred to as the front end face 320 of the rotation shaft 300) and the first end surface 320 of the rotation shaft 300 are formed to be intaglio, and the pin 800 will be described later.
  • a hole into which the part 810 is inserted hereinafter referred to as a rotation shaft hole 330 may be included.
  • the rotation shaft hole 330 is formed to have an inner diameter smaller than or equal to the outer diameter of the first part 810 of the pin 800 to be described later so as to be press-fitted with the first part 810 of the pin 800 to be described later. It can be.
  • the eccentric bush 400 protrudes to the opposite side of the rotation shaft 300 based on the recess portion 410 into which one end of the rotation shaft 300 is inserted and the recess portion 410, and is connected to the rotation shaft 300.
  • a balance weight 430 disposed on the opposite side of the eccentric portion 420 based on the recess portion 410 may be included.
  • the eccentric bush 400 may further include an eccentric bush hole 440 into which the pin 800 is inserted, and the eccentric bush hole 440 may be formed through the recess portion 410. .
  • the eccentric bush hole 440 is a first eccentric bush hole 442 into which a first portion 810 to be described below of the pin 800 is inserted and a second portion 820 of the pin 800 to be described later. It includes a second eccentric bush hole 444 into which is inserted, the first eccentric bush hole 442 is formed to be engraved from the base surface 412 of the recess portion 410, and the second eccentric bush hole ( 444) may be formed to be engraved from the front end surface of the eccentric portion 420 and communicate with the first eccentric bush hole 442.
  • the rotational shaft 300 and the eccentric bush 400 are formed on the inner circumferential surface 414 and A rotation gap may exist between the outer circumferential surface 310 of the rotating shaft 300 . That is, the rotating shaft 300 and the eccentric bush 400 may be coupled to each other so as to be capable of relative rotation based on a position eccentric from the rotating shaft 300 .
  • the inner diameter of the recess portion 410 may be larger than the outer diameter of the rotating shaft 300 .
  • the center of the rotation shaft hole 330 is spaced apart from the rotation shaft 300 in the radial direction of the rotation shaft 300 so that the central axis of the pin 800 is disposed at a position eccentric from the rotation shaft 300. can be formed in place.
  • the center of the first eccentric bush hole 442 is the center of the recess portion 410 so that the central axis of the pin 800 is disposed at an eccentric position with respect to the central axis of the recess portion 410. It is formed at a position spaced from the shaft in the radial direction of the recess portion 410, and the center of the second eccentric bush hole 444 is coaxial with the center of the first eccentric bush hole 442 It can be.
  • the inner diameter of the first eccentric bush hole 442 is larger than the outer diameter of the first portion 810 of the pin 800 to be described later, and the inner diameter of the second eccentric bush hole 444 is the pin ( 800) may be formed larger than the outer diameter of the second portion 820 to be described later.
  • the orbiting scroll 500 includes a disk-shaped orbiting head plate 510, a orbiting wrap portion 520 protruding from the orbiting head plate portion 510, and a direction from the orbiting head plate portion 510 to the opposite side of the orbiting wrap portion 520.
  • An annular boss portion 530 protruding and coupled to the eccentric portion 420 through the bearing 700 may be included.
  • the fixed scroll 600 includes a disk-shaped fixed end plate part 610 and a fixed wrap part 620 protruding from the fixed end plate part 610 and meshing with the orbiting wrap part 520 to form the compression chamber, , A discharge port 630 communicating the compression chamber and the discharge chamber S22 may be formed in the fixed end plate 610 .
  • the bearing 700 includes a plain bearing unit 710 in sliding contact with the eccentric part 420 and a ring unit 720 inserted into the boss part 530 after being coupled with the plain bearing unit 710 Thus, it may be interposed between the eccentric part 420 and the boss part 530.
  • the ring unit 720 may be press-fitted with the plain bearing unit 710 and slidably inserted into the boss part 530 . That is, the ring unit 720 is formed in an annular shape extending along the inner circumferential surface of the boss portion 530, and the plain bearing unit 710 has an outer circumferential surface of the eccentric portion 420 and the ring unit 720. It is formed in an annular shape extending along the inner circumferential surface, the outer diameter of the plain bearing unit 710 is greater than or equal to the inner diameter of the ring unit 720, and the outer diameter of the ring unit 720 is the boss portion 530 It may be formed smaller than the inner diameter of.
  • a separation preventing member 900 preventing the ring unit 720 from being separated from the boss portion 530 may be provided.
  • the detachment preventing member 900 is formed of, for example, a snap ring, and a groove 532 into which the snap ring is inserted may be formed on an inner circumferential surface of the boss portion 530 .
  • the pin 800 may include a first part 810 that passes through the eccentric bush 400 and is engaged with the rotation shaft 300 .
  • a part of the first part 810 may be accommodated in the first eccentric bush hole 442 , and the other part of the first part 810 may be press-fitted into the rotation shaft hole 330 .
  • the pin 800 extends from one end of the first part 810 and is disposed on the opposite side of the rotation shaft hole 330 based on the first eccentric bush hole 442, and the first eccentric bush A second portion 820 formed larger than the inner diameter of the hole 442 may be further included.
  • the second portion 820 may come into contact with a stepped surface 443 formed between the first eccentric bush hole 442 and the second eccentric bush hole 444 .
  • the rotary shaft 300 and the eccentric bush 400 may be rotated together.
  • the orbiting scroll 500 may be orbited by the eccentric part 420 .
  • the refrigerant may be introduced into the space S1 in which the motor 200 is accommodated from the refrigerant inlet pipe (not shown).
  • the refrigerant in the space S1 in which the motor 200 is accommodated may be moved to the suction chamber S21 through the communication passage (not shown).
  • the refrigerant in the suction chamber (S21) can be sucked into the compression chamber.
  • the refrigerant sucked into the compression chamber may be compressed while moving toward the center along the moving path of the compression chamber and discharged to the discharge chamber S22 through the discharge port 630 .
  • the refrigerant in the discharge chamber (S22) is moved to the oil separation space (S3) and separated from the oil, and then discharged to the outside through the refrigerant discharge pipe (not shown).
  • the oil separated from the refrigerant in the oil separation space S3 may be moved to the space S1 accommodating the motor 200 and the back pressure chamber 114 through the oil return passage P.
  • the orbiting scroll 500 is rotatably supported with respect to the rotary shaft 300 by the bearing 700, and the bearing 700 supports the plain bearing unit 710 and the ring unit 720. ), it is possible to suppress deterioration in cost and durability while preventing deformation of the orbiting scroll 500 by the bearing 700.
  • the bearing 700 includes the plain bearing unit 710, the number of parts and cost are reduced compared to the case where the bearing 700 is formed of a ball bearing, and the boss portion 530 As the diameter is reduced, rotational inertia of the orbiting scroll 500 may be reduced and durability may be increased.
  • the bearing 700 includes the ring unit 720
  • the number of parts, the cost, the diameter of the boss part 530, and the orbiting scroll ( 500) has slightly increased rotational inertia and somewhat reduced durability, but compared to the case where the ring unit 720 is formed of a ball bearing, the number of parts, the cost, the diameter of the boss part 530, and the orbiting scroll 500
  • the rotational inertia of can still be reduced and the durability can still be increased.
  • the ring unit 720 is first press-fitted with the plain bearing unit 710 and then slid into the boss portion 530. Accordingly, deformation may not occur in the orbiting scroll 500 when the bearing 700 is inserted into the boss portion 530 . Accordingly, after the bearing 700 is inserted into the boss part 530, there is no need to reprocess the orbiting head plate part 510 and the orbiting wrap part 520, so that costs required for reprocessing may not be incurred. have.
  • a communication hole 534 communicating the back pressure chamber 114 is further included so that oil in the back pressure chamber 114 can be supplied between the plain bearing unit 710 and the eccentric part 420 .
  • the front end surface of the eccentric part 420 is formed to be spaced apart from the base surface of the boss part 530 so that oil can be continuously supplied between the plain bearing unit 710 and the eccentric part 420,
  • An oil storage space V may be formed between the front end surface of the eccentric part 420 and the base surface of the boss part 530 .
  • the communication hole (not shown) allows oil to circulate between the back pressure chamber 114 and the boss portion 530 and to supply clean oil between the plain bearing unit 710 and the eccentric portion 420.
  • the eccentric bush 400 As a rotational gap is formed between the rotary shaft 300 and the eccentric bush 400, for example, when liquid refrigerant is present during initial driving, the eccentric bush 400 It is rotated relative to the rotating shaft 300 and rotated together with the rotating shaft 300 in a state where the turning radius of the eccentric part 420 is adjusted. That is, the rotational motion of the rotating shaft 300 is not immediately transmitted to the eccentric bush 400 but can be transmitted in a buffer manner according to the designed rotational clearance. Accordingly, damage to the orbiting scroll 500 and the fixed scroll 600 due to liquid refrigerant compression can be prevented.
  • the pin 800 is press-fitted with the rotary shaft 300 but not with the eccentric bush 400 so that the eccentric bush 400 can rotate relative to the rotary shaft 300. Accordingly, There is a possibility that the eccentric bush 400 is moved in an axial direction of the rotation shaft 300 or tilted with respect to the rotation shaft 300 .
  • the pin 800 includes the second portion 820 having a larger outer diameter than the first portion 810, and the second portion 820 is the eccentric bush ( As the stepped surface 443 of the eccentric bush 400 is supported, axial movement and tilting of the eccentric bush 400 can be suppressed. As a result, collision between the eccentric bush 400 and the orbiting scroll 500 is prevented, and abnormal contact between the eccentric bush 400 and the plain bearing unit 710 is prevented, so that the eccentric bush 400, Damage to the orbiting scroll 500 and the bearing 700 can be prevented.
  • the eccentric bush 400 includes the first eccentric bush hole 442, the second eccentric bush hole 444, and the stepped surface 443, and the pin 800
  • the second portion 820 is inserted into the second eccentric bush hole 444 and formed to contact the stepped surface 443, but is not limited thereto. That is, although not separately shown, the eccentric bush 400 includes only the first eccentric bush hole 442, and the second part 820 of the pin 800 has a shape like a dish head, for example. It may also be formed to be in contact with the surface of the eccentric bush 400.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

La présente invention concerne un compresseur à spirales, comprenant : un arbre rotatif ; une douille d'excentrique ayant une partie excentrique, qui est excentrique par rapport à l'arbre rotatif ; une spirale orbitale entraînée en rotation par la partie excentrique ; une spirale fixe qui forme une chambre de compression conjointement avec la spirale orbitale ; un palier interposé entre la partie excentrique et la spirale orbitale ; et une broche pour accoupler la douille d'excentrique à l'arbre rotatif. Le palier comprend : une unité de palier lisse en contact coulissant avec la partie excentrique ; et une unité de bague ajustée par pression avec l'unité de palier lisse et insérée dans la spirale orbitale. La broche peut comprendre : une première partie traversant la douille d'excentrique et accouplée à l'arbre rotatif ; et une seconde partie qui s'étend à partir de la première partie et limite le mouvement axial de la douille d'excentrique.
PCT/KR2022/006372 2021-05-12 2022-05-03 Compresseur à spirales Ceased WO2022240060A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2021-0061525 2021-05-12
KR1020210061525A KR20220153923A (ko) 2021-05-12 2021-05-12 스크롤 압축기

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WO2022240060A1 true WO2022240060A1 (fr) 2022-11-17

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PCT/KR2022/006372 Ceased WO2022240060A1 (fr) 2021-05-12 2022-05-03 Compresseur à spirales

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WO (1) WO2022240060A1 (fr)

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* Cited by examiner, † Cited by third party
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KR20250018218A (ko) 2023-07-26 2025-02-05 한온시스템 주식회사 스크롤 압축기

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030067997A (ko) * 2002-02-09 2003-08-19 엘지전자 주식회사 스크롤 압축기의 마찰손실 저감장치
KR20080093517A (ko) * 2007-04-17 2008-10-22 스크롤 테크놀로지스 슬라이더 블록의 운동을 방지하기 위한 스톱 구조물을포함하는 스크롤 압축기
JP2012184743A (ja) * 2011-03-08 2012-09-27 Hitachi Appliances Inc スクロール圧縮機
JP2020033986A (ja) * 2018-08-31 2020-03-05 サンデン・オートモーティブコンポーネント株式会社 スクロール圧縮機
KR20200064608A (ko) * 2018-11-29 2020-06-08 현대모비스 주식회사 전동식 컴프레서 장치

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102538446B1 (ko) 2017-02-07 2023-06-01 한온시스템 주식회사 스크롤 압축기
KR102480987B1 (ko) 2018-09-14 2022-12-26 한온시스템 주식회사 스크롤 압축기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030067997A (ko) * 2002-02-09 2003-08-19 엘지전자 주식회사 스크롤 압축기의 마찰손실 저감장치
KR20080093517A (ko) * 2007-04-17 2008-10-22 스크롤 테크놀로지스 슬라이더 블록의 운동을 방지하기 위한 스톱 구조물을포함하는 스크롤 압축기
JP2012184743A (ja) * 2011-03-08 2012-09-27 Hitachi Appliances Inc スクロール圧縮機
JP2020033986A (ja) * 2018-08-31 2020-03-05 サンデン・オートモーティブコンポーネント株式会社 スクロール圧縮機
KR20200064608A (ko) * 2018-11-29 2020-06-08 현대모비스 주식회사 전동식 컴프레서 장치

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