WO2021186499A1 - 圧縮機 - Google Patents

圧縮機 Download PDF

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Publication number
WO2021186499A1
WO2021186499A1 PCT/JP2020/011460 JP2020011460W WO2021186499A1 WO 2021186499 A1 WO2021186499 A1 WO 2021186499A1 JP 2020011460 W JP2020011460 W JP 2020011460W WO 2021186499 A1 WO2021186499 A1 WO 2021186499A1
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WO
WIPO (PCT)
Prior art keywords
space
suction port
shell
main frame
mesh
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/JP2020/011460
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English (en)
French (fr)
Japanese (ja)
Inventor
大輔 堀口
友寿 松井
祐司 ▲高▼村
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.)
Mitsubishi Electric Corp
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Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2022508615A priority Critical patent/JPWO2021186499A1/ja
Priority to PCT/JP2020/011460 priority patent/WO2021186499A1/ja
Publication of WO2021186499A1 publication Critical patent/WO2021186499A1/ja
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
    • 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

Definitions

  • the present disclosure relates to a structure for suppressing the depletion of lubricating oil in a compressor.
  • the compressor compresses and discharges the refrigerant in a compression chamber formed in the compression mechanism.
  • the refrigerant is sucked from the suction pipe and is taken into the compression chamber through the suction port which is the gas passage of the frame.
  • Patent Document 1 by covering the opening of the suction pipe and providing a net or a baffle plate, the lubricating oil or liquid refrigerant carried with the refrigerant is supplemented and dropped downward to provide a liquid compressor or a lubricating oil for a compressor. It prevents deficiency and overheating of the electric motor.
  • the present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide a compressor capable of suppressing the occurrence of oil rise while suppressing a decrease in operating efficiency due to pressure loss. Is.
  • the compressor according to the present disclosure is formed in a shell, a main body portion provided in the shell and dividing the internal space of the shell into a first space and a second space, and the first space and the said main body portion.
  • a main frame provided with a first suction port connecting the second space, and a suction pipe connected to a suction port formed in the second space in the shell and sucking a fluid containing a refrigerant and a lubricating oil.
  • the compression mechanism When the compression mechanism provided in the first space of the shell, sucked from the suction pipe, and compresses the refrigerant passing through the first suction port, and the main frame when viewed from the second space side, It is provided between the suction port and the first suction port in a state where the outer peripheral edge portion and the inner peripheral surface of the shell are in contact with each other and a space is formed between the inner peripheral edge portion and the main frame. It includes an annular net-like member.
  • FIG. 1 It is a front view of the scroll compressor which concerns on Embodiment 1 of this invention. It is a figure when the scroll compressor of FIG. 1 is seen from the side. It is sectional drawing when the XX'cross section of the scroll compressor of FIG. 2 is seen from the direction of an arrow. It is an enlarged view of the region Y of the alternate long and short dash line in FIG. It is a perspective view of a main frame. It is the figure which looked at the main frame from the 2nd space side. It is a figure for demonstrating the relationship between mesh size and opening, oil rise and COP. It is a figure for demonstrating the relationship between the opening and the oil rise. It is a figure for demonstrating the relationship between a spread and COP. It is sectional drawing of the scroll compressor which concerns on Embodiment 2 of this invention. It is sectional drawing of the scroll compressor which concerns on Embodiment 3 of this invention.
  • FIG. 1 is an external view of the scroll compressor according to the first embodiment of the present invention.
  • FIG. 2 is an external view of the scroll compressor of FIG. 1 when viewed from the side.
  • FIG. 3 is a cross-sectional view of the XX'cross section of the scroll compressor of FIG. 2 when viewed from the direction of the arrow.
  • the shell, the compression mechanism, and the like are shown in cross section, but the crankshaft is shown as an external view.
  • the scroll compressor includes a shell 1, a main frame 2, a thrust plate 3, a compression mechanism unit 4, a drive mechanism unit 5, a subframe 6, a crankshaft 7, and a mesh member 8. ..
  • the compressor of the first embodiment is a so-called vertical scroll compressor used in a state where the central axis of the crankshaft 7 is substantially perpendicular to the ground. Further, it is a so-called low-pressure shell type scroll compressor in which the pressure in the space in the shell 1 in which the drive mechanism unit 5 is arranged becomes lower than the pressure in the discharge space in the upper shell 12.
  • the shell 1 is a tubular housing made of a conductive member such as metal, and is fixed to a middle shell 11, an upper shell 12, a lower shell 13, a suction pipe 14, a discharge pipe 15, and a power feeding unit 16. It is equipped with a stand 17.
  • the middle shell 11 is a cylindrical tube.
  • the upper shell 12 is a substantially hemispherical lid, and a part of the upper shell 12 is connected by welding or the like on the upper side of the middle shell 11 to close one opening of the middle shell 11.
  • the lower shell 13 is a substantially hemispherical bottom body, and a part thereof is connected to the lower side of the middle shell 11 by welding or the like to close the other opening of the middle shell 11.
  • the suction pipe 14 is a pipe for sucking a fluid containing a refrigerant and a lubricating oil into the shell 1, and is partially connected to a suction port 111 provided on the second space 19 side of the side wall of the middle shell 11 which will be described later. Is connected by welding or the like with the inserted state.
  • the discharge pipe 15 is a pipe for discharging the refrigerant to the outside of the shell 1, and is connected to the hole provided in the upper shell 12 by welding or the like with a part inserted.
  • the power feeding unit 16 is a member that supplies power to the scroll compressor, and is provided on the side wall of the middle shell 11.
  • the power feeding unit 16 includes a cover 161 and a power feeding terminal 162.
  • the cover 161 is a cover member.
  • the power supply terminal 162 is made of a metal member, one of which is provided so as to be surrounded by the cover 161 and the other of which is provided inside the middle shell 11.
  • the power supply terminal 162 is connected to the stator 51 of the drive mechanism unit 5 by wiring inside the shell 1.
  • the fixed base 17 is a support base that supports the shell 1.
  • the fixing base 17 has a plurality of legs, and by fixing the legs with screws, the scroll compressor can be fixed to other members such as the housing of the air conditioner outdoor unit.
  • the main frame 2 is a cylindrical metal frame, which is provided inside the shell 1 and holds the swing scroll 42 of the compression mechanism portion 4 swingably.
  • the main frame 2 includes a main body portion 21, an accommodating portion 22, a shaft hole 23, a first suction port 24, a second suction port 25, and a rib portion 26.
  • the main body 21 is a main part constituting the main frame 2, and divides the internal space of the shell 1 into an upper first space 18 and a lower second space 19.
  • the accommodating portion 22 is formed at the center of the main body portion 21 in the radial direction so as to be connected to the first space 18.
  • the shaft hole 23 is provided below the accommodating portion 22 so as to be connected to the accommodating portion 22 and the second space 19. That is, the accommodating portion 22 and the shaft hole 23 form a space penetrating the main frame 2 in the vertical direction.
  • the portion of the main frame 2 in which the shaft hole 23 is formed, that is, the portion of the main body portion 21 on the second space 19 side is a boss portion 211 configured as a bearing that supports the crankshaft 7.
  • the boss portion 211 has a shape that tapers toward the drive mechanism portion 5, and is located between the first suction port 24 and the suction pipe 14 when the main frame 2 is viewed from the second space 19 side. There is. Further, on the second space 19 side of the boss portion 211, a balancer cover 212 is provided to prevent the lubricating oil from being scattered by the balancer 73 described later as the crankshaft 7 rotates.
  • the first suction port 24 and the second suction port 25 are holes for supplying the refrigerant to the compression mechanism portion 4, and are in the vertical direction of the main body portion 21 so as to connect the first space 18 and the second space 19. It is formed through. As shown in FIG. 6, the first suction port 24 is provided on the other side of the boss portion 211 as viewed from the suction pipe 14.
  • the second suction port 25 has an opening area smaller than that of the first suction port 24, and is provided between the first suction port 24 and the suction pipe 14 at a position separated from the suction pipe 14.
  • the formation positions of the first suction port 24 and the second suction port 25 are formed corresponding to the winding end of each spiral of the pair of spiral bodies of the compression mechanism unit 4.
  • the formation positions and the size of the opening area of the first suction port 24 and the second suction port 25 are intended to take in substantially the same amount of refrigerant at the two refrigerant intake ports formed by the pair of spiral bodies.
  • the rib portion 26 is a plurality of protruding portions formed on the outer peripheral side of the boss portion 211 so as to project in the direction of the drive mechanism portion 5, and at least one of them is between the first suction port 24 and the second suction port 25. Is formed in.
  • the main frame 2 is further provided with an oil return hole and an oil return pipe for returning the lubricating oil accumulated in the accommodating portion 22 to the second space 19 side in the main body portion 21.
  • the thrust plate 3 is a thin metal plate of a steel plate type that functions as a thrust bearing, is arranged in the main body portion 21, and supports the thrust load of the compression mechanism portion 4.
  • the thrust plate 3 is shaped so as not to interfere with the suction of the refrigerant from the first suction port 24 and the second suction port 25.
  • the compression mechanism unit 4 is a compression mechanism provided in the first space 18 of the shell 1 and compresses the refrigerant sucked from the suction pipe 14 and passed through the first suction port 24.
  • the compression mechanism unit 4 includes a fixed scroll 41, a swing scroll 42, an old dam ring 43, a discharge valve 44, and a muffler 45, and the compression chamber 46 is formed by these scrolls.
  • the fixed scroll 41 is made of a metal such as cast iron, and includes a base plate 411, a spiral body 412, and a discharge port 413.
  • the base plate 411 is a disk-shaped flange, and is fixed to the main frame 2 by bolting in the vicinity of the outer periphery thereof.
  • the spiral body 412 is a spiral tooth formed so as to project from one surface of the base plate 411.
  • the discharge port 413 is a hole formed in the substantially center of the base plate 411 so as to penetrate in the vertical direction, which is the thickness direction thereof. As shown in the figure, a port and a valve for releasing the high-pressure refrigerant when the pressure becomes too high in the intermediate pressure compression chamber are also provided.
  • the swing scroll 42 is made of a metal such as aluminum, and includes a base plate 421, a spiral body 422, a cylindrical portion 423, and an Oldham groove 424.
  • the base plate 421 is a disk-shaped flange.
  • the spiral body 422 is a spiral tooth formed so as to project from one surface of the base plate 421.
  • the tubular portion 423 is a cylinder formed so as to project from substantially the center of the other surface of the base plate 421.
  • On the inner peripheral surface of the tubular portion 423 a swing bearing that rotatably supports the bush 75, which will be described later, a so-called journal bearing is provided so that its central axis is parallel to the central axis of the crankshaft 7. ..
  • the Oldham groove 424 is a groove formed on the back surface of the base plate 421 on the other surface.
  • a tip seal made of hard plastic is provided at the tip of the tooth of the fixed scroll 41 and the swing scroll 42.
  • the old dam ring 43 is a member for preventing the swing scroll 42 from rotating.
  • the Oldham ring 43 includes a pair of keys on one side and a pair of keys on the other side, one key is housed in the Oldham groove 424 of the swing scroll 42, and the other key is formed in the mainframe 2. It is housed in a keyway.
  • the discharge valve 44 is a valve that opens and closes the discharge port 413 according to the pressure of the refrigerant, and is screwed to the upper side of the base plate 411 of the fixed scroll 41, and the refrigerant in the compression chamber 46 communicating with the discharge port 413 is predetermined. When the pressure is reached, it changes from the closed state to the open state.
  • the muffler 45 is a dome-shaped member provided with a discharge hole 451 and is provided on the upper side of the fixed scroll 41.
  • the compression chamber 46 is formed by engaging the spiral body 412 of the fixed scroll 41 and the spiral body 422 of the swing scroll 42 with each other and sealing them with the tip of the spiral body, the tip seal, and the base plate. ..
  • the compression chamber 46 is composed of a plurality of compression chambers whose volume decreases from the outside to the inside in the radial direction of the scroll.
  • a halogenated hydrocarbon having a carbon double bond for example, a halogenated hydrocarbon having no carbon double bond, a natural refrigerant, or a mixture containing them can be used in the composition.
  • R32 CH2F2
  • R410A R32 / R125
  • the drive mechanism unit 5 is provided below the main frame 2.
  • the drive mechanism unit 5 includes a stator 51 and a rotor 52.
  • the stator 51 is, for example, a ring-shaped stator formed by winding windings around an iron core formed by laminating a plurality of electromagnetic steel sheets via an insulating layer, and is fixed to the inner wall of the middle shell 11 by shrink fitting or the like.
  • the rotor 52 is a cylindrical rotor having a permanent magnet built in an iron core formed by laminating a plurality of electromagnetic steel plates and having a through hole penetrating in the vertical direction in the center, and is arranged in the internal space of the stator 51. ing.
  • the subframe 6 is a metal frame, which is provided on the lower side of the drive mechanism portion 5 and is fixed to the inner wall of the middle shell 11 by shrink fitting, welding, or the like.
  • the subframe 6 includes an auxiliary bearing portion 61 and an oil pump 62.
  • the sub-bearing portion 61 is a ball bearing provided on the upper center of the sub-frame 6.
  • the oil pump 62 is a pump for sucking up lubricating oil, and is provided on the lower center side of the subframe 6.
  • Lubricating oil is stored in the lower shell 13 at the bottom of the shell 1, is sucked up by the oil pump 62, passes through the crankshaft 7, is supplied to the compression mechanism 4 and the like, and wears between parts that come into mechanical contact with each other. Reduces, adjusts the temperature of sliding parts, and improves sealing performance.
  • As the lubricating oil an oil having excellent lubrication characteristics, electrical insulation, stability, refrigerant solubility, low-temperature fluidity and the like, and having an appropriate viscosity is suitable.
  • naphthenic, polyol ester (POE), polyvinyl ether (PVE), polyalkylene glycol (PAG) oils can be used.
  • the crankshaft 7 is a metal rod-shaped member, which is provided inside the shell 1.
  • the crankshaft 7 includes a spindle portion 71, an eccentric shaft portion 72, a balancer 73, an oil passage 74, and a bush 75.
  • the spindle portion 71 is a shaft that constitutes the main portion of the crankshaft 7, is fixed to a through hole at the center of the rotor 52 by shrink fitting or the like, and is arranged so that the central axis coincides with the central axis of the middle shell 11. ing.
  • the eccentric shaft portion 72 is provided on the upper side of the spindle portion 71 so that the central shaft thereof is eccentric with respect to the central axis of the spindle portion 71.
  • the balancer 73 is provided on the outer periphery of the spindle portion 71 near the boss portion 211, and is covered with the balancer cover 212.
  • the oil passage 74 is provided inside the main shaft portion 71 and the eccentric shaft portion 72 so as to penetrate vertically along the axial direction.
  • the bush 75 is made of a metal such as iron, and is a member that connects the eccentric shaft portion 72 and the cylindrical portion 423 of the swing scroll 42 and absorbs the imbalance of the load generated during swing.
  • the mesh member 8 is an annular mesh in which a metal wire is woven into a metal wire of 150 mesh or more and 400 mesh or less and a mesh opening of 37 ⁇ m or more and 100 ⁇ m or less, and is fixed to the rib portion 26 of the main frame 2 with a screw.
  • the net-like member 8 will be described in detail with reference to FIGS. 4, 5, and 6.
  • FIG. 4 is an enlarged view of the region Y of the alternate long and short dash line in FIG.
  • FIG. 5 is a perspective view of the main frame.
  • FIG. 6 is a view of the main frame as viewed from the second space side.
  • the mesh member 8 is provided between the suction port 111 and the first suction port 24 so as to be separated from the first suction port 24. Further, the net-like member 8 is provided so that when the main frame 2 is viewed from the second space 19 side, the inner peripheral edge portion 81 thereof overlaps with the first suction port 24 and a gap 9 is formed between the main frame 2 and the main frame 2. Has been done. More specifically, the gap 9 is formed between the boss portion 211 of the main body portion 21 and the inner peripheral edge portion 81 of the net-like member 8. The net-like member 8 is similarly separated from the second suction port 25, and is provided at a position where the main frame 2 overlaps the inner peripheral edge portion 81 when viewed from the second space 19 side.
  • the inner peripheral edge portion 81 can be changed in inner diameter within a range in which the first suction port 24 and the second suction port 25 are not exposed from the mesh member 8 and do not come into contact with the boss portion 211, and a gap is formed according to the inner diameter thereof. The size of 9 also changes.
  • the outer peripheral edge portion 82 of the net-like member 8 is provided in contact with the inner surface of the middle shell 11.
  • the fluid for compression in the compression mechanism unit 4 is sucked into the shell 1 from the suction pipe 14 and reaches the fluid intake space through the first suction port 24 and the second suction port 25 of the main frame 2. do. Then, the fluid is taken into the compression chamber 46 formed by the fixed scroll 41 and the swing scroll 42, and the volume is reduced while moving from the outer peripheral portion toward the center along with the eccentric revolution motion of the swing scroll 42. Is compressed. The compressed fluid is discharged from the discharge port 414 of the fixed scroll 41 against the discharge valve 44, and is discharged to the outside of the shell 1 through the discharge hole 451 of the muffler 45 and the discharge pipe 15.
  • the mesh member 8 is provided between the suction port 111 and the first suction port 24, the fluid sucked by the suction pipe 14 is affected by the mesh member 8.
  • the refrigerant contained in the fluid passes through the network member 8, and the lubricating oil collides with the network member 8 and falls downward in the shell 1.
  • the size of the particles is different between the refrigerant which is a gas and the lubricating oil which is a liquid.
  • the refrigerant which is a gas a single refrigerant molecule is in a state where it can move freely, and the refrigerant molecule violently moves around the space and makes a thermal motion, so that the particle size is about 10 ⁇ m or less.
  • the intermolecular force acts on the molecules and the molecules are gathered, so that the particle size is about 50 to 100 ⁇ m.
  • the net-like member 8 has a wire diameter of 40 to 50 ⁇ m, 150 mesh or more and 400 mesh or less, and a mesh opening of 37 ⁇ m or more and 100 ⁇ m or less. Therefore, when the fluid, which is a mixture of the refrigerant and the lubricating oil, comes into contact with the network member 8, the refrigerant having particles of 10 ⁇ m or less passes through the mesh and is taken into the first suction port 24 and the second suction port 25, and the particles are taken into the first suction port 24 and the second suction port 25.
  • the refrigerating machine oil having a size of 50 to 100 ⁇ m cannot pass through the mesh and can be dropped downward in the shell 1, and it is possible to suppress the occurrence of oil rising when the lubricating oil is discharged to the outside of the compressor. Further, since the particles of the liquid refrigerant are also close to the size of the lubricating oil, they cannot pass through the mesh, and the occurrence of liquid compression due to the compression of the liquid refrigerant can be suppressed.
  • FIG. 7 is a diagram for explaining the relationship between the mesh size and the opening, the oil rise, and the COP.
  • the test conditions were as follows: the scroll compressor of the first embodiment using R32 as the refrigerant and MEL46EH manufactured by JXTG Energy as the lubricating oil was incorporated into a refrigeration cycle equipped with a condenser, an expansion valve and an evaporator, and driven at a frequency of 7800 rpm. It is a thing.
  • the oil rise represents the oil content in the fluid near the condenser, and the COP represents the operating efficiency in the refrigeration cycle based on the case where the mesh member 8 is not provided (100%).
  • the oil rise can be suppressed to 60% as compared with the case where the mesh member 8 is not provided. This is because, as described above, the finer mesh of the mesh member 8 causes the lubricating oil to collide and reduce the amount of the lubricating oil sucked into the suction port.
  • the opening and the oil rising in FIG. 8 it can be seen that if the opening is 100 ⁇ m or less, and further 75 ⁇ m or less, it is effective for the oil rising.
  • the COP peaks at around 55 ⁇ m and is the highest.
  • the boss portion 211 is located between the first suction port 24 and the suction pipe 14, the fluid sucked by the suction pipe 14 is on the other side of the boss portion 211. It goes to the first suction port 24, collides with the boss portion 211 and the balancer cover 212, and flows along the outer peripheral surface of the boss portion 211 and the inner peripheral surface in the middle shell 11. Such a fluid flow becomes a swirling flow having a high flow velocity near the inner wall surface of the middle shell 11, and rises in the shell 1 while rotating along the inner peripheral surface in the middle shell 11 around the boss portion 211. It goes to 1 suction port 24 and 2nd suction port 25.
  • the annular net-like member 8 While the fluid contained in the swirling flow is being guided to the first suction port 24 and the second suction port 25, the annular net-like member 8 is provided in a wide range in contact with the inner surface of the middle shell 11 with the outer peripheral edge portion 82. Therefore, most of the fluid is affected by the network member 8, the refrigerant passes through the network member 8 as described above, and the lubricating oil collides and falls downward. It should be noted that the swirling flow is more likely to occur when there are a plurality of suction ports. On the other hand, a part of the fluid does not collide with the network member 8 and is allowed to pass through the gap 9 between the boss portion 211 and the inner peripheral edge portion 81 of the network member 8.
  • the fluid passing through the void 9 is, for example, a fluid in which the lubricating oil is separated by colliding with the boss portion 211 or the balancer cover 212 and the ratio of the refrigerant is increased. That is, if the gap 9 is not provided, all the fluid will pass through the network member 8, so that a pressure loss will occur, and a gap will be generated in the fluid where the influence is small even if the fluid does not pass through the network member 8.
  • the void 9 suppresses the decrease in operating efficiency due to the pressure loss of the refrigerant, and the mesh member 8 effectively separates the lubricating oil from the fluid to suppress the depletion of the lubricating oil in the compressor. Can be done.
  • a frequency variable power supply device is used as a power supply device that supplies electric power to the compressor via the power supply terminal of the power supply unit 16.
  • the frequency variable power supply device is a power supply device that controls the operating frequency by a control command from the outside, and changes the rotation speed of the crankshaft 7 according to an input signal. That is, by changing the operating frequency, the swing speed of the swing scroll 42 changes as the rotation speeds of the rotor 52 and the crankshaft 7 change, so that the compression capacity of the scroll compressor is changed. Can be done.
  • the flow rate and the flow velocity of the fluid flowing into the shell 1 from the suction pipe 14 change.
  • the amount of compression of the fluid in the compression chamber 46 increases as the swing speed of the swing scroll 42 increases.
  • the flow velocity of the fluid flowing in from the suction pipe 14 becomes high, and the flow rate increases.
  • the amount of lubricating oil brought into the compression chamber 46 via the first suction port 24 and the second suction port 25 also increases, but in the present embodiment, the supply amount of lubricating oil is small due to the mesh member 8.
  • the lubricating oil is designed to be supplied via the oil pump 62, there is no problem even if the supply of the lubricating oil brought in from the first suction port 24 and the second suction port 25 becomes zero. ..
  • the shell 1 and the main body 21 provided in the shell 1 and divide the internal space of the shell 1 into the first space 18 and the second space 19 and the main body 21 are formed in the first space 18.
  • a fluid containing a refrigerant and a lubricating oil is connected to a main frame 2 provided with a first suction port 24 connecting the second space 19 and a suction port 111 formed in the second space 19 in the shell 1.
  • the suction port 111 and the first suction port 111 and the first suction are in a state where the outer peripheral edge portion 82 and the inner peripheral surface of the shell 1 are in contact with each other and a space 9 is formed between the inner peripheral edge portion 81 and the main frame 2.
  • An annular net-like member 8 provided between the port 24 and the port 24 is provided.
  • the main frame 2 includes a boss portion 211 formed on the second space 19 side of the main body portion 21 and forming a bearing for supporting the crankshaft 7 for driving the compression mechanism portion 4, and the boss portion 211 is a first suction port. Since the gap 9 is formed between the boss portion 211 and the inner peripheral edge portion 81 of the mesh member 8, the fluid sucked from the suction pipe 14 is located between the boss portion 211 and the suction port 111. Since it is a swirling flow that flows along the inner peripheral surface of the 211 or the middle shell 11, the lubricating oil in the fluid can be sufficiently separated by the annular net-like member 8, and the lubricating oil passes through the gap 9 to the suction port side.
  • the fluid to be used can be a fluid having a low content of lubricating oil.
  • the main frame 2 is formed in the main body 31 and includes a second suction port 25 that connects the first space 18 and the second space 19, and the second suction port 25 is provided with respect to the first suction port 24 and the suction port 111. Since they are formed at positions separated from each other, it is possible to make it easier to generate a swirling flow by sucking fluid at a plurality of ports.
  • the main frame 2 is provided with a plurality of rib portions 26 protruding in the direction of the drive mechanism portion 5 on the outer peripheral side of the boss portion 211, and the mesh member 8 is fixed to the rib portion 26, so that the main frame 2 has an annular network shape.
  • the arrangement of the member 8 away from the first suction port 24 and the provision of the gap 9 can be performed accurately and easily.
  • the mesh member 8 has a mesh size of 150 mesh or more and 400 mesh or less and a mesh size of 37 ⁇ m or more and 100 ⁇ m or less. can do.
  • FIG. 10 is a cross-sectional view of the scroll compressor according to the second embodiment of the present invention.
  • parts having the same configuration as the scroll compressors of FIGS. 1 to 9 are designated by the same reference numerals and the description thereof will be omitted.
  • the mesh member 8A is provided in addition to the mesh member 8.
  • the net-like member 8A is provided on the drive mechanism portion 5 side of the net-like member 8, and the inner peripheral edge portion 8A1 contacts the boss portion 211, and the outer peripheral edge portion 8A2 sees the main frame 2 from the second space 19 side. At that time, it is provided so as to coincide with or overlap the inner peripheral edge portion 81 of the net-like member 8. That is, since the mesh member 8A is provided on the drive mechanism portion 5 side of the gap 9, the fluid sucked into the first suction port 24 and the second suction port 25 without passing through the mesh member 8 can be reduced. It is possible to suppress the oil rise. It is more effective if the mesh member 8 and the mesh member 8A are arranged closer to the first suction port 24 than the upper end of the suction port 111.
  • FIG. 11 is a cross-sectional view of the scroll compressor according to the third embodiment of the present invention.
  • the net-like member 8B is provided so as to be inclined so that the inner peripheral edge portion 81B is closer to the drive mechanism portion 5 than the outer peripheral edge portion 82B.
  • the fluid sucked from the suction pipe 14 rises along the inclination of the net-like member 8A when swirling around the boss portion 211, so that the fluid is gradually added. It can collide with the reticulated member 8A, and the ratio of the lubricating oil contained in the fluid sucked into the first suction port 24 and the second suction port 25 can be further suppressed.
  • the present invention is not limited to the invention according to the above embodiment, and can be appropriately modified as long as the gist of the present invention is not deviated.
  • the scroll compressor has been described, but it can also be applied to a rotary compressor and a reciprocating compressor.
  • the net-like member 8 may be fixed to the inner surface of the middle shell 11 in addition to being fixed to the main frame 2. Further, a plurality of net-like members 8 may be arranged in combination.
  • the lubricating oil that could not pass may adhere to the surface of the mesh member 8, and another fluid may wind up the adhered lubricating oil and guide the lubricating oil to the suction port.
  • the passage can be suppressed multiple times, so that the oil rise can be further suppressed.
  • a plurality of meshes and nets having different meshes may be combined. For example, it is effective to make the mesh member 8 on the upstream side of the fluid larger than the mesh member 8 on the downstream side.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
PCT/JP2020/011460 2020-03-16 2020-03-16 圧縮機 Ceased WO2021186499A1 (ja)

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PCT/JP2020/011460 WO2021186499A1 (ja) 2020-03-16 2020-03-16 圧縮機

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023119625A1 (ja) * 2021-12-24 2023-06-29 三菱電機株式会社 スクロール圧縮機
CN116803715A (zh) * 2023-02-03 2023-09-26 浙江三花智能控制股份有限公司 热泵集成模块
US20250243860A1 (en) * 2022-06-27 2025-07-31 Mitsubishi Electric Corporation Scroll compressor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07158569A (ja) * 1993-12-09 1995-06-20 Mitsubishi Electric Corp スクロール流体機械
WO2017126106A1 (ja) * 2016-01-22 2017-07-27 三菱電機株式会社 スクロール圧縮機および冷凍サイクル装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008267142A (ja) * 2007-04-16 2008-11-06 Matsushita Electric Ind Co Ltd スクロール式流体機械のフィルター装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07158569A (ja) * 1993-12-09 1995-06-20 Mitsubishi Electric Corp スクロール流体機械
WO2017126106A1 (ja) * 2016-01-22 2017-07-27 三菱電機株式会社 スクロール圧縮機および冷凍サイクル装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023119625A1 (ja) * 2021-12-24 2023-06-29 三菱電機株式会社 スクロール圧縮機
US20250243860A1 (en) * 2022-06-27 2025-07-31 Mitsubishi Electric Corporation Scroll compressor
US12473919B2 (en) * 2022-06-27 2025-11-18 Mitsubishiki Electric Corporation Scroll compressor
CN116803715A (zh) * 2023-02-03 2023-09-26 浙江三花智能控制股份有限公司 热泵集成模块

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