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WO2024150908A1 - Compresseur à spirale - Google Patents

Compresseur à spirale Download PDF

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Publication number
WO2024150908A1
WO2024150908A1 PCT/KR2023/017606 KR2023017606W WO2024150908A1 WO 2024150908 A1 WO2024150908 A1 WO 2024150908A1 KR 2023017606 W KR2023017606 W KR 2023017606W WO 2024150908 A1 WO2024150908 A1 WO 2024150908A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
scroll compressor
refrigerant
main body
core portion
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/KR2023/017606
Other languages
English (en)
Korean (ko)
Inventor
송세영
김옥현
김영민
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
Priority to CN202380037399.8A priority Critical patent/CN119137374A/zh
Publication of WO2024150908A1 publication Critical patent/WO2024150908A1/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
    • F04C29/02—Lubrication; Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • 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
    • 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
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston 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
    • 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

Definitions

  • This embodiment is intended to separate the oil contained in the refrigerant discharged from the compressor and simultaneously reduce noise due to pulsation. More specifically, it relates to a scroll compressor with improved efficiency in reducing pulsation noise depending on the pressure of the discharged refrigerant.
  • an air conditioning system installed in a vehicle consists of a compressor, a condenser, an expansion valve, and an evaporator.
  • the compressor compresses the refrigerant gas discharged from the evaporator into a high temperature and high pressure state that is easy to liquefy and delivers it to the condenser. Additionally, the compressor pumps and recirculates the refrigerant to ensure continued cooling.
  • the condenser liquefies the high-temperature, high-pressure refrigerant gas by cooling it by exchanging heat with the outside air, and the expansion valve adiabatically expands the liquid refrigerant to lower the temperature and pressure, making it easy to evaporate in the evaporator.
  • the evaporator absorbs heat and vaporizes it by exchanging heat with the outside air introduced into the room.
  • the outside air is cooled by losing heat to the refrigerant and is blown into the car interior by a blower.
  • compressors There are two types of compressors: a reciprocating type in which the part that compresses the working fluid (refrigerant) performs compression while reciprocating, and a rotary type in which compression is performed while the part that compresses the working fluid (refrigerant) moves in a reciprocating motion.
  • the reciprocating type uses a crank to transfer the driving force of the driving source to a plurality of pistons.
  • crank type that transmits it to a swash plate
  • a swash plate type that transmits it to a rotating shaft on which a swash plate is installed
  • wobble plate type that uses a wobble plate.
  • a scroll compressor is a type of rotary compressor and refers to a compressor in which compression is performed while two engaged scrolls of involute teeth move in linear motion.
  • the scroll compressor operates by relative rotation of an orbiting scroll and a fixed scroll having a geometrical phase difference of 180 inside the discharge chamber.
  • the orbiting scroll and the fixed scroll have scroll-shaped wings, and the The wings are made of involute curves with the same shape.
  • a crescent-shaped compression chamber is formed by engaging a orbiting scroll and a fixed scroll to complete a compression cycle.
  • the compression chamber has a larger volume toward the outside and a smaller volume closer to the center.
  • a suction chamber is formed on the outside and a discharge port is formed at the center.
  • compression is achieved by relative rotation of the scroll and the sealed suction gas in a closed space of a given volume around the outer circumference of the scroll, so that the size of the compression space gradually decreases toward the discharge port and is discharged through the discharge port.
  • the refrigerant discharged from the discharge chamber is centrifuged while passing through an oil separation tube and is finally discharged through a discharge port. If oil remains in the discharge refrigerant, the evaporation efficiency of the refrigerant in the evaporator decreases, which causes the compressor to deteriorate. A problem occurred that affected the efficiency of the system.
  • the scroll compressor includes a discharge passage that guides the refrigerant to the outside of the compressor so that it is sucked in, compressed, and then discharged into the discharge space.
  • the discharge passage has a discharge check valve (DCV, Discharge Check Valve) that adjusts the opening amount of the discharge passage. It is provided.
  • the discharge check valve discharges the refrigerant compressed in the scroll compressor from the discharge space to the outside of the scroll compressor, reduces pulsation of the discharged refrigerant, and prevents the refrigerant from flowing back from the outside of the scroll compressor into the discharge space. formed to do so.
  • These embodiments are intended to promote stable operation of the scroll compressor by providing an oil separation function in the rear head of the scroll compressor and reducing pressure fluctuations due to pulsation of the refrigerant.
  • a scroll compressor includes a compression unit coupled to one side of the driving unit; a rear housing including a discharge chamber through which the refrigerant compressed in the compression section is discharged, and a passage section through which the refrigerant is discharged;
  • a discharge check valve is installed in the passage portion to supply refrigerant to the discharge port while the opening amount varies depending on the pressure of the refrigerant.
  • the discharge check valve is coupled to the passage portion and has a main inlet through which the refrigerant and oil flow. Formed main body portion; a core portion that moves inside the main body portion according to the pressure of the refrigerant; And an inner diameter change passage is formed in which the inner diameter of the main body changes in the axial direction.
  • An inlet hole is provided that communicates with the discharge chamber and through which refrigerant flows, and the refrigerant moving through the inlet hole collides with the discharge check valve, causing some oil to be separated.
  • the main inlet includes a first main inlet that is temporarily closed by the core portion before the core portion moves to the upper side of the main body portion; It includes a second main inlet that is arranged symmetrically when an imaginary line is drawn based on the first main inlet, and the second main inlet is always maintained in an open state.
  • the second main inlet is arranged left and right symmetrically with respect to the first main inlet.
  • the inner diameter change passage includes an enlarged section in which the opening cross-sectional area increases as the differential pressure due to movement of the core portion increases.
  • the expanded section is formed continuously for a certain period starting from the second main inlet.
  • the inner diameter change passage is characterized in that it is inclined outward in the radial direction so that the inner diameter increases from the lower side of the main body portion toward the upper side.
  • the inner diameter change flow path is characterized in that it communicates with the second main inlet.
  • the inner diameter change passage is symmetrically arranged inside the main body when an imaginary center line based on the axial direction of the main body is drawn.
  • a cap is coupled to the upper end of the main body portion, and a cap opening is formed in the cap circumferential direction of the upper surface to allow refrigerant passing through the core portion to move to the discharge port.
  • the cap is characterized in that its outer diameter is formed to be larger than that of the main body portion and is coupled to the passage portion.
  • the cap includes a rib formed in the center of the upper surface; A bridge is formed to partition between the cap openings based on the ribs.
  • the bridge is characterized in that it overlaps at least a portion of the inner diameter change path in the axial direction.
  • the core portion includes a first core portion having an outer diameter corresponding to an inner diameter of the main body portion, extending to a predetermined length in an axial direction, and having a core rib formed in an outer axial direction; a second core portion formed integrally with the first core portion and extending upward from the top of the first core portion to where refrigerant is discharged; It is formed integrally with the first core portion and includes a third core portion extending from the lower side of the first core portion toward the lower side where the refrigerant flows to a diameter different from that of the first core portion.
  • the core part is characterized in that the lower surface of the third core part is maintained in a state aligned with the lower surface of the main body part before being moved by the refrigerant.
  • the main body portion is provided with core guide portions disposed facing each other inside the main body portion to guide the movement of the core portion.
  • a first core guide into which the core rib is inserted is formed in the core guide portion.
  • a second core guide is formed in the core guide portion adjacent to the guide groove, and is partially in surface contact with the outer peripheral surface of the core portion to facilitate axial movement of the main body portion.
  • the second core guide is characterized in that a curvature corresponding to the outer curvature of the core portion is maintained.
  • the core guide portion is arranged to intersect with the inner diameter change passage.
  • the core guide portion includes a first open wall that is inclined in a direction in which the opening area of the inner diameter change passage increases and is formed at a certain section from the second main inlet; It includes a second open wall extending from the extended end of the first open wall to a predetermined length toward the upper axial direction and having an opening cross-sectional area kept constant.
  • a discharge check valve with an oil separation function is installed in the passage part where the refrigerant discharged from the compression unit flows, and the discharge check valve is structured so that the refrigerant gas can be moved even when the scroll compressor is not operating.
  • the movement flow of refrigerant gas can be improved by changing .
  • the structure of the discharge check valve is changed to allow refrigerant gas to move even when there is no differential pressure, thereby improving the controllability of the scroll compressor and minimizing the occurrence of vibration due to vibration.
  • the oil contained in the refrigerant is stably separated through a discharge check valve, and after inducing the flow of the refrigerant, only the separated refrigerant gas can be moved to the discharge port, thereby minimizing the generation of vibration and noise due to pulsation and reducing the oil content. Separation efficiency is improved.
  • Embodiments of the present invention can stably control the discharge amount of refrigerant gas discharged to the discharge port by changing the stroke in which the core portion installed in the discharge check valve moves inside the main body portion according to the pressure of the refrigerant, thereby improving the operational safety of the electric compressor. do.
  • FIG. 1 is a perspective view showing a state in which the discharge check valve according to this embodiment is installed in the rear housing.
  • Figure 2 is an exploded perspective view of the discharge check valve according to this embodiment.
  • Figure 3 is a combined cross-sectional view of Figure 2.
  • Figure 4 is a bottom perspective view of the discharge check valve according to this embodiment.
  • 5 to 6 are diagrams illustrating an inner diameter change passage and a core guide portion formed in the main body portion according to this embodiment.
  • FIG. 7 to 8 are diagrams showing a state in which the core portion is coupled to the main body portion according to this embodiment.
  • Figure 9 is a diagram showing a state in which a cap is coupled to the main body according to this embodiment.
  • Figure 10 is a view showing a state before the discharge check valve according to this embodiment is operated.
  • Figure 11 is a diagram showing an operating state of the discharge check valve according to this embodiment.
  • Figure 12 is a perspective view showing a scroll compressor equipped with a discharge check valve according to this embodiment.
  • a component is said to be “connected to” or “coupled to” another component when it is directly connected or coupled to another component or with an intervening other component. Includes all cases. On the other hand, when one component is referred to as “directly connected to” or “directly coupled to” another component, it indicates that there is no intervening other component. “And/or” includes each and every combination of one or more of the mentioned items.
  • first, second, etc. are used to describe various components, these components are of course not limited by these terms. These terms are merely used to distinguish one component from another.
  • FIG. 1 is a perspective view showing the discharge check valve according to this embodiment installed in the rear housing
  • Figure 2 is an exploded perspective view of the discharge check valve according to this embodiment
  • Figure 3 is a combined cross-sectional view of Figure 2.
  • Figure 4 is a bottom perspective view of the discharge check valve according to this embodiment
  • Figures 5 and 6 are diagrams showing the inner diameter change passage and core guide portion formed in the main body part according to this embodiment
  • Figures 7 and 8 is a diagram showing a state in which the core part is coupled to the main body according to this embodiment.
  • Figure 9 is a diagram showing a state in which the cap is coupled to the main body according to this embodiment
  • Figure 10 is a diagram showing a state before the discharge check valve according to this embodiment is operated
  • Figure 11 is a diagram showing a state before the discharge check valve according to this embodiment is operated.
  • This is a diagram showing a state in which the discharge check valve is operated
  • Figure 12 is a perspective view showing a scroll compressor equipped with a discharge check valve according to this embodiment.
  • the scroll compressor 1 stably separates oil and refrigerant gas in the passage portion 14 of the rear housing 10 and reduces vibration and noise due to pulsation.
  • a discharge check valve 100 is installed to reduce discharge.
  • this embodiment includes a driving unit 3, a compression unit 5 coupled to one side of the driving unit 3, a control unit 7 coupled to the other side of the driving unit 3, and an inflow into which the refrigerant flows.
  • a rear housing (10) formed with a passage portion (14) in communication with the hole (12), which guides the oil contained in the refrigerant moved through the inlet hole (12) in the direction of gravity and at the same time opens according to the pulsation of the refrigerant.
  • a discharge check valve 100 installed in the passage portion 14 is provided to supply only gaseous refrigerant to the discharge port 11 with a variable amount.
  • the scroll compressor (1) is provided with a stator (90) inside the driving part (3), and the driving part (3) corresponds to a driving source that generates rotational power of the electric compressor (1) for compressing the refrigerant.
  • the drive unit 3 includes a drive unit housing 30 forming an external shape, a stator 90 fixed within the drive unit housing 30, and a rotor 41 rotating inside the stator 90.
  • the driving unit housing 30 is a part of the outer body of the driving unit 3 and is formed in a cylindrical shape, including a front housing 32 supporting the front end of the rotor 41, and a rear housing 32 supporting the front end of the rotor 41. It consists of a rear housing 31 that supports the end portion.
  • the stator 90 is an electromagnet that generates a rotational driving force together with the rotor 41 mounted coaxially on the inside, and includes a stator core fixed and mounted on the inner peripheral surface of the driving unit housing 30 by press-fitting, etc., and a stator core wound on the stator core. It consists of a stator coil (92).
  • the stator core is a hollow cylindrical member, and a hole through which the rotor 41 is inserted is formed on the central axis.
  • the rotor 41 is a part that is coaxially mounted on the inside of the stator 90 and driven to rotate, and is rotatably inserted into a hole in the center of the stator core of the stator 90.
  • a rotating shaft 37 is inserted into the rotor 41 along the central axis, and a rotor core 39 is coupled to the outer peripheral surface of the rotating shaft 37.
  • the stator 90 When the stator 90 is excited, the rotor 41 is rotated by the interaction of the stator 90 according to the driving principle of the motor, and the rotation shaft 37 is rotated through the bearings 81 and 82. It is rotatably supported in the drive unit housing 30.
  • the compression unit 5 is a part that compresses the refrigerant by rotating by the rotational driving force generated by the driving unit 3, and is rotatably coupled to the orbiting scroll 53 and the orbiting scroll 53 to compress the refrigerant, thereby creating a compressor ( 1) It is composed of a fixed scroll 50 that discharges to the outside.
  • the compression unit 5 is a cylindrical body open toward the drive unit 3 and is designed to discharge compressed gaseous refrigerant through a discharge port 11 opened on one side.
  • the orbiting scroll 53 has an orbiting scroll wrap 59 curved in a spiral shape protruding from the rear so as to converge toward the center, and the rotation axis 37 of the driving unit 3 is located at the center of the orbiting scroll wrap 59.
  • the eccentric shaft 38 is coupled and rotates around the rotation shaft 37 in synchronization with the rotor 41.
  • the fixed scroll 50 is configured to form a compression chamber 54 between the orbiting scroll 53 and the fixed scroll wrap curved in a spiral shape to match the scroll wrap 59 of the orbiting scroll 53 ( 61) are arranged to converge toward the center.
  • the rear housing 10 is formed with a passage portion 14 communicating with an inlet hole 12 through which refrigerant flows.
  • the scroll compressor (1) includes a discharge chamber (10a) through which the compressed refrigerant is discharged from the compression section (5) coupled to one side of the driving section (3), and an inlet hole that communicates with the discharge chamber (10a) and through which the refrigerant flows. (12) and a rear housing 10 including a passage portion 14 in which a passage through which the refrigerant moved through the inlet hole 12 is discharged is formed, and the pressure of the refrigerant moved through the inlet hole 12 A discharge check valve 100 is provided in the passage portion 14 to supply refrigerant to the discharge port 11 while the opening amount is varied.
  • the discharge check valve 100 is formed with a main body portion 110 coupled to the passage portion 14 and a main inlet 111 (see FIGS. 5 to 7) through which the refrigerant and oil flow, and an inner A main body portion 110 in which an inner diameter change passage 112 (see FIG. 5) whose inner diameter changes in the axial direction is formed, and a core portion that moves inside the main body portion 110 according to the pressure of the refrigerant ( 120) and an elastic member 130 for supporting the core portion 120.
  • the discharge check valve 100 is provided to separate oil contained in the refrigerant, control stroke according to pulsation, and move only the refrigerant gas to the discharge port 11.
  • this embodiment is provided through the main inlet formed in the main body 110 ( Since 111) is not maintained in a closed state but is configured to be partially open to allow some refrigerant or oil to flow in, the discharge check valve 100 trembles and chatters due to pulsation at the beginning when the scroll compressor 1 is switched from the off state to the on state. Chattering phenomenon can be prevented and unnecessary vibration can be suppressed.
  • the discharge check valve 100 when controlling the scroll compressor 1, is configured in a partially open form, thereby making control according to pressure fluctuations of the refrigerant more advantageous.
  • the refrigerant After the refrigerant moves through the inlet hole 12, it collides with the discharge check valve 100, so that the oil contained in the refrigerant is separated and drained to the lower side of the rear housing 10, and the refrigerant gas is discharged through the discharge check valve 100. ), it can be stably moved toward the upper side of the rear housing 10, thereby improving oil separation efficiency.
  • the passage portion 14 has an inner circumferential surface in a cylindrical shape and is disposed diagonally with respect to the rear housing 10 to allow refrigerant introduced through the inlet hole 12 to flow in. After the refrigerant flows into the inside of the passage portion 14, it moves along the lower side in the longitudinal direction while rotating in a spiral shape in the circumferential direction.
  • This embodiment is provided with an inlet hole 12 that communicates with the discharge chamber 10a and through which refrigerant flows, and the refrigerant moved through the inlet hole 12 collides with the discharge check valve 100, causing some oil to flow out. separated.
  • the main body portion 110 has an overall cylindrical shape, a main inlet 111 is formed on the lower surface, and an inner diameter change passage 112 is formed on the inner side.
  • the main inlet 111 includes a first main inlet 111a that is temporarily maintained in a closed state by the core portion 120 before the core portion 120 is moved to the upper side of the main body portion 110; , It includes a second main inlet (111b) that is symmetrically arranged when an imaginary line is drawn based on the first main inlet (111a).
  • the second main inlet (111b) is arranged symmetrically to the left and right with respect to the first main inlet (111a), so that refrigerant can be stably introduced no matter which direction it flows.
  • the first main inlet 111a remains closed before the core portion 120 is moved, and is opened when the core portion 120 is moved so that the refrigerant gas can move.
  • the movement of the refrigerant gas is possible through the second main inlet (111b) even when the core part 120 is not moved, so discharge due to pulsation at the beginning when the scroll compressor (1) is stopped and then operated.
  • the check valve 100 By preventing the check valve 100 from vibrating, noise generation can be reduced.
  • the inner diameter change passage 112 includes an enlarged section in which the opening cross-sectional area increases as the differential pressure due to movement of the core portion 120 increases.
  • the expanded section extends from the lower side where the main inlet 111 is formed among the entire section in the inner axial direction of the main body portion 110 to the lower side of the cap 140, which will be described later.
  • the enlarged section is formed to reduce the pressure of the refrigerant, and the form shown in the drawing shows one example among various embodiments.
  • the expanded section is formed continuously for a certain period starting from the second main inlet (111b).
  • the inner diameter change passage 112 is formed to be inclined radially outward so that the inner diameter increases from the lower side to the upper side of the main body portion 110.
  • the inner diameter change passage 112 is formed in this way, compared to the case where the inner diameter maintains a constant diameter, the pulsation phenomenon caused by the pressure fluctuation of the refrigerant can be reduced, which is advantageous in reducing the occurrence of vibration.
  • the inner diameter change passage 112 extends from the lower end of the main body 110 to a predetermined length in the axial direction, and increases in inner diameter toward the upper side of the main body 110 to form an opening for movement of refrigerant gas.
  • the area can be increased. In this case, stable movement can be achieved even when a large amount of refrigerant gas flows into the discharge check valve 100.
  • the opening area for refrigerant movement increases depending on the position at which the core part 120 moves inside the main body part 110, thereby preventing the occurrence of vibration due to pulsation. It can be prevented.
  • the inner diameter change passage 112 is in communication with the second main inlet 111b, so that the refrigerant moves along the inner diameter change passage 112 simultaneously with the inflow.
  • the inner diameter change passage 112 is symmetrically disposed on the inside of the main body 110 when drawing a virtual center line based on the axial direction of the main body 110, and flows through the main inlet 111. Even when the inflowing refrigerant flows in any direction, it can provide a space where vibration noise due to pressure fluctuations can be reduced along with stable movement.
  • the refrigerant remains in the form of a mixed gas of oil and gas before passing through the inlet hole 12. And the refrigerant moves to the lower side of the passage part 14 as shown by the thick solid line due to the specific gravity of the oil and then moves to the filter part.
  • the refrigerant gas contained in the refrigerant flows into the second main inlet 111b due to the difference in specific gravity at the lower side of the passage portion and then moves to the discharge port 11, so that the oil and refrigerant gas contained in the refrigerant are separated. They can be stably separated from each other.
  • a cap 140 is coupled to the upper end of the main body portion 110, and the cap 140 is opened in the circumferential direction of the upper surface so that the refrigerant passing through the core portion 120 moves to the discharge port 11.
  • a portion 142 is formed.
  • the cap 140 is coupled to the upper end of the main body portion 110, and the cap 140 has a circumference so that the refrigerant passing through the core portion 120 moves to the discharge port 11.
  • a cap opening 142 is formed in the direction.
  • the cap opening 142 has a concentric circle with respect to the center of the cap 140 and has a plurality of openings in the circumferential direction so that the gaseous refrigerant can move toward the discharge port 11 without any resistance or pressure loss.
  • cap opening 142 is placed in this position is that the core portion 120 is relatively moved while compressing the elastic member 130, so that the cap is opened even when it is moved to a position close to the lower side of the cap 140. This is to ensure stable movement of refrigerant by partially blocking or preventing the portion 142 from overlapping.
  • the cap 140 is formed with a rib 144 formed at the center of the upper surface and a bridge 146 that partitions the cap opening 142 based on the rib 144.
  • the ribs 144 are formed integrally with the bridge 146 and can stably support the load applied through the elastic member 130, thereby maintaining the strength of the cap 140 at a constant level.
  • the bridge 146 divides the plurality of cap openings 142 from each other and guides the refrigerant gas so that it does not concentrate in a specific location, enabling stable movement of the refrigerant gas, and partially directs the generated vibration outward in the radial direction. It can be dispersed.
  • the bridge 146 overlaps at least partially with the inner diameter change passage 112 in the axial direction, so that the refrigerant collides with the bridge 146, thereby improving oil separation performance.
  • the core portion 120 is a first core that has an outer diameter corresponding to the inner diameter of the main body portion 110, extends to a predetermined length in the axial direction, and has a core rib 122a formed in the outer axial direction.
  • a second core portion 124 formed integrally with the portion 122 and the first core portion 122 and extending upward from the upper side of the first core portion 122 where the refrigerant is discharged, and the second core portion 124 1
  • a third core portion 126 that is formed integrally with the core portion 122 and extends from the lower side of the first core portion 122 toward the lower side where the refrigerant flows to a different diameter from the first core portion 122. ) includes.
  • the core portion 120 includes a second core portion 124 extending axially upward from the first core portion 122, and a third core portion 126 extending axially downward.
  • the first core portion 122 is formed in a cylindrical shape, and the core ribs 122a are symmetrically disposed on the left and right sides, respectively, when the core portion 120 is viewed from above.
  • the core rib 122a is formed in a cylindrical shape, but it may also be changed to another shape.
  • the second to third core parts 124 and 126 have smaller diameters than the first core part 122, weight and manufacturing costs can be reduced, thereby improving economic efficiency.
  • the lower surface of the third core portion 126 is maintained in a state aligned with the lower surface of the main body portion 110.
  • the first main inlet 111a is maintained in a closed state, so as shown by the arrow, the refrigerant gas flows only through the second main inlet 111b and then passes through the inside of the main body 110 to the cap ( It moves via the upper part of 140).
  • the main body portion 110 is provided with core guide portions 114 disposed facing each other on the inside of the main body portion 110 to guide the movement of the core portion 120.
  • the core guide portion 114 is arranged symmetrically left and right when the main body portion 110 is viewed from above, thereby promoting stable movement of the core portion 120.
  • the core part 120 according to this embodiment is not rotated in the inner axial direction of the main body part 110 by the core guide part 114, but is constantly moved.
  • a first core guide 114a into which the core rib 122a is inserted is formed in the core guide portion 114.
  • the first core guide 114a is formed in the shape of a groove rounded inward to allow the core rib 122a to be inserted.
  • the core portion 120 When the core portion 120 is guided to move by the first core guide 114a, the core portion 120 always moves consistently, thereby preventing rotation during movement.
  • the core guide portion 114 is disposed adjacent to the guide groove 114a and partially contacts the outer peripheral surface of the core portion 120 to facilitate axial movement of the main body portion 110.
  • a second core guide 114b is formed.
  • the second core guide 114b maintains a curvature corresponding to the outer curvature of the core portion 120 and promotes stable movement of the core portion 120 with minimal friction when in contact with the outer peripheral surface of the core portion 120. can do.
  • the second core guide 114b contacts a portion of the core guide 114a with respect to the first core guide 114a to guide the movement of the core portion 120.
  • the core guide portion 114 is arranged to intersect with the inner diameter change passage 112.
  • the position where the inner diameter change passage 112 is formed is in communication with the second main inlet 111b, so if it is placed overlapping with the inner diameter change passage 112, the movement of the refrigerant gas may be hindered, as shown in the drawing. They are arranged crosswise.
  • the core guide portion 114 is arranged to intersect with the inner diameter change passage.
  • the core guide portion 114 includes a first open wall 114c inclined in the direction of increasing the opening area of the inner diameter change passage 112 and formed at a certain section from the second main inlet 111b, and the first open wall ( It includes a second open wall 114d that extends a predetermined length from the extended end of 114c) toward the upper side in the axial direction and whose opening cross-sectional area is kept constant.
  • the first open wall portion 114c is inclined and extended at a predetermined angle, so that the refrigerant moves along the first open wall portion 114 to the second open wall portion 114d.
  • the second open wall portion 114d extends vertically toward the cap 140 and allows the refrigerant passing through the first open wall portion 114c to move vertically.
  • the core portion 120 is maintained at a predetermined pressure by an elastic member 130, which will be described later, and when a pressure greater than the supporting force of the elastic member 130 is applied to the core portion 120, the core rib As (122a) slides in the axial direction along the inner peripheral surface of the first core guide (114a) and its moving direction is guided, strokes are adjusted differently.
  • the moving speed does not increase rapidly and the pressing force of the elastic member 130 and the core rib 122a ) and the first core guide 114a by controlling the discharge pressure of the refrigerant while moving according to a pressure greater than the contact force, thereby reducing noise and vibration caused by pulsation.
  • the elastic member 130 has its lower side inserted into the above-described second core portion 124, its upper side supported by the lower side of the cap 140 to be described later, and elastically supporting the core portion 120 at all times. .
  • the elastic member 130 uses a coil spring, but it can be changed to another configuration capable of generating elastic force.
  • the discharge check valve 100 In order to be inserted into the passage portion 14, the discharge check valve 100 according to this embodiment is fixed in a forcibly pressed state inside the passage portion 14, or is temporarily assembled in the passage portion 14 and then has a snap ring. (not shown) may be fixed to prevent movement in the longitudinal direction of the passage portion 14.
  • the discharge check valve 100 can be stacked on the upper side of the oil separator after being assembled in the passage portion 14 and fixed in an interference fit method or fixed in a welding or screw structure. there is.

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

Abstract

L'invention concerne un compresseur à spirale. Selon un mode de réalisation de la présente invention, un clapet antiretour de refoulement est installé dans un boîtier arrière du compresseur à spirale pour séparer l'huile incluse dans un fluide frigorigène, et la génération de bruit de vibration due à des pulsations est réduite à un minimum, ce qui permet un fonctionnement stable indépendamment des fluctuations de la pression du fluide frigorigène.
PCT/KR2023/017606 2023-01-09 2023-11-06 Compresseur à spirale Ceased WO2024150908A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202380037399.8A CN119137374A (zh) 2023-01-09 2023-11-06 涡旋压缩机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2023-0003050 2023-01-09
KR1020230003050A KR20240111230A (ko) 2023-01-09 2023-01-09 스크롤 압축기

Publications (1)

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WO2024150908A1 true WO2024150908A1 (fr) 2024-07-18

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PCT/KR2023/017606 Ceased WO2024150908A1 (fr) 2023-01-09 2023-11-06 Compresseur à spirale

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KR (1) KR20240111230A (fr)
CN (1) CN119137374A (fr)
WO (1) WO2024150908A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060065908A (ko) * 2004-12-10 2006-06-14 엘지전자 주식회사 스크롤 압축기의 역류 방지 장치
US7721757B2 (en) * 2004-04-26 2010-05-25 Danfoss Maneurop S.A. Discharge check valve assembly for use with hermetic scroll compressor
JP2013068106A (ja) * 2011-09-21 2013-04-18 Toyota Industries Corp 電動圧縮機
JP2014070582A (ja) * 2012-09-28 2014-04-21 Toyota Industries Corp 電動圧縮機及び空調装置
KR20220165507A (ko) * 2021-06-08 2022-12-15 한온시스템 주식회사 스크롤 압축기

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101607711B1 (ko) 2009-11-25 2016-03-30 한온시스템 주식회사 가변용량형 사판식 압축기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7721757B2 (en) * 2004-04-26 2010-05-25 Danfoss Maneurop S.A. Discharge check valve assembly for use with hermetic scroll compressor
KR20060065908A (ko) * 2004-12-10 2006-06-14 엘지전자 주식회사 스크롤 압축기의 역류 방지 장치
JP2013068106A (ja) * 2011-09-21 2013-04-18 Toyota Industries Corp 電動圧縮機
JP2014070582A (ja) * 2012-09-28 2014-04-21 Toyota Industries Corp 電動圧縮機及び空調装置
KR20220165507A (ko) * 2021-06-08 2022-12-15 한온시스템 주식회사 스크롤 압축기

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KR20240111230A (ko) 2024-07-16
CN119137374A (zh) 2024-12-13

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