WO2018003016A1 - Compresseur à spirale - Google Patents

Compresseur à spirale Download PDF

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Publication number
WO2018003016A1
WO2018003016A1 PCT/JP2016/069137 JP2016069137W WO2018003016A1 WO 2018003016 A1 WO2018003016 A1 WO 2018003016A1 JP 2016069137 W JP2016069137 W JP 2016069137W WO 2018003016 A1 WO2018003016 A1 WO 2018003016A1
Authority
WO
WIPO (PCT)
Prior art keywords
hole
valve body
injection port
compression chamber
scroll compressor
Prior art date
Application number
PCT/JP2016/069137
Other languages
English (en)
Japanese (ja)
Inventor
隼平 溝畑
功一 福原
修平 小山
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to EP16907249.3A priority Critical patent/EP3477113A1/fr
Priority to KR1020187031278A priority patent/KR20180124130A/ko
Priority to JP2018524623A priority patent/JP6641479B2/ja
Priority to PCT/JP2016/069137 priority patent/WO2018003016A1/fr
Publication of WO2018003016A1 publication Critical patent/WO2018003016A1/fr

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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
    • 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
    • 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
    • F04C29/126—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 of the non-return type
    • F04C29/128—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 of the non-return type of the elastic type, e.g. reed valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/22—Fluid gaseous, i.e. compressible
    • F04C2210/222—Carbon dioxide (CO2)
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating

Definitions

  • the present invention relates to a scroll compressor that compresses a fluid, and particularly to a scroll compressor that can inject (inject) a fluid to be compressed into a compression chamber.
  • a scroll compressor that injects a fluid to be compressed into a compression chamber in the middle of compression, that is, a compression chamber before communicating with a discharge port, for the purpose of suppressing temperature rise of fluid discharged from the compressor
  • Such a scroll compressor is provided with a check valve that prevents the fluid from flowing backward from the compression chamber in the middle of the injection flow path through which the fluid to be injected passes.
  • the conventional scroll compressor configured as described above is operated without injecting fluid into the compression chamber, the injection flow path from the compression chamber to the check valve becomes a dead volume. That is, when the compression chamber communicates with the dead volume during fluid compression, the fluid re-expands in the dead volume, and the performance of the scroll compressor is degraded.
  • a conventional scroll compressor has been proposed in which the dead volume is reduced (for example, see Patent Document 1).
  • the scroll compressor described in Patent Document 1 is provided with an injection port that penetrates in the wall thickness direction from the outer surface to the compression chamber in the base plate portion of the fixed scroll.
  • a block having an injection pipe connected to the outer surface corresponding to the injection port of the base plate portion of the fixed scroll is applied to form a check valve chamber therebetween.
  • a valve seat having a reed valve that opens and closes the inlet from the injection pipe of the block from the inside is sandwiched between the base plate portion of the fixed scroll and the block.
  • a reed valve stopper is provided in a part of the check valve chamber.
  • the valve seat is disposed at a position where the reed valve can open and close the inlet from the injection pipe of the block and the reed valve can contact the valve stopper, and the valve seat is fixedly scrolled.
  • the scroll compressor described in Patent Literature 1 has a problem that it is difficult to assemble because it is necessary to dispose the valve seat using a positioning jig.
  • the present invention has been made to solve the above-described problems, and in a scroll compressor capable of injecting fluid into a compression chamber, a scroll compressor that can reduce dead volume and can be easily assembled is obtained. For the purpose.
  • a scroll compressor includes a first base plate portion, a fixed scroll having a first spiral tooth provided on one surface of the first base plate portion, a second base plate portion, and the second base plate portion.
  • the base plate portion has a second spiral tooth provided on the surface facing the fixed scroll, and a compression chamber is formed by combining the first spiral tooth and the second spiral tooth.
  • An orbiting scroll that oscillates with respect to the compression chamber, a first through hole that penetrates the first base plate portion so as to communicate with the compression chamber, and a cover plate that covers the first through hole.
  • a fixed member provided on a surface opposite to the swing scroll and formed with an injection port connected to an injection pipe in communication with the first through hole, and reciprocally inserted into the first through hole Inserted into the first through hole And a spring for urging the valve body toward the injection port, and between the valve body or the valve body and the first through hole, from the injection port to the first through hole.
  • a flow path is formed in which the flowed refrigerant flows out to the compression chamber, and when the valve body is urged by the spring and moves to the injection port side, the valve body is located between the injection port and the compression chamber. The flow path is closed.
  • the valve body and the spring function as a check valve that prevents the fluid from flowing backward from the compression chamber to the injection port.
  • the valve body and the spring are provided in a first through hole formed in the first base plate portion of the fixed scroll. For this reason, the scroll compressor according to the present invention can reduce the dead volume. Further, when assembling the scroll compressor according to the present invention, the valve body and the spring need only be inserted into the first through hole. For this reason, the scroll compressor according to the present invention can be easily assembled.
  • FIG. 1 is a schematic longitudinal sectional view of a scroll compressor according to Embodiment 1 of the present invention.
  • the refrigerant flow in the normal compression process is indicated by a solid thick arrow
  • the refrigerant flow in the injection control is indicated by a broken thick arrow.
  • hatching of the cross-sections of some parts is omitted in order to make the lead lines easy to see.
  • the scroll compressor 1 is a fluid machine that compresses and discharges a fluid (for example, a refrigerant).
  • the scroll compressor 1 is one of the components of a refrigeration cycle apparatus used in various industrial machines such as a refrigerator, a freezer, a vending machine, a refrigeration apparatus, and a water heater.
  • a vertically placed scroll compressor in which the main shaft 2 is disposed along the vertical direction is illustrated.
  • the dimensional relationship and shape of each component may differ from the actual one.
  • the scroll compressor 1 includes a compression mechanism unit 3 and a drive mechanism unit 4 that drives the compression mechanism unit 3.
  • the compression mechanism part 3 and the drive mechanism part 4 are accommodated in the shell 5 which is a pressure vessel (sealed container).
  • the bottom of the shell 5 is an oil sump for storing refrigeration oil.
  • the shell 5 is connected to a suction pipe 6 that sucks the refrigerant into the shell 5 and a discharge pipe 7 that discharges the compressed refrigerant to the outside of the shell 5.
  • the compression mechanism unit 3 is driven by the drive mechanism unit 4 to compress the refrigerant gas sucked from the suction pipe 6 in the compression chamber 8 and discharge it to the discharge space 10 in the shell 5 through the discharge port 9. It has a function.
  • the discharge space 10 is formed in an upper space inside the scroll compressor 1 and is a high-pressure space. The refrigerant gas discharged to the discharge space 10 passes through the discharge pipe 7 from the discharge space 10 and is discharged to the outside of the scroll compressor 1.
  • the compression mechanism unit 3 includes a fixed scroll 20 fixed to a frame 11 attached to the shell 5, and a swing scroll 26 that swings (that is, revolves) with respect to the fixed scroll 20.
  • the fixed scroll 20 includes a base plate portion 21 and spiral teeth 22 that are protrusions having an involute curve shape provided on one surface (the lower surface in FIG. 1) of the base plate portion 21.
  • the orbiting scroll 26 includes a base plate portion 27 and spiral teeth 28 that are involute curve-shaped protrusions provided on one surface (upper surface in FIG. 1) of the base plate portion 27.
  • the fixed scroll 20 and the orbiting scroll 26 are combined so that the respective spiral teeth 22 and 28 mesh with each other.
  • the base plate portion 21 corresponds to the first base plate portion of the present invention.
  • the spiral tooth 22 corresponds to the first spiral tooth of the present invention.
  • the base plate portion 27 corresponds to the second base plate portion of the present invention.
  • the spiral tooth 28 corresponds to the second spiral tooth of the present invention.
  • a discharge port 9 that discharges the refrigerant gas that has been compressed in the compression chamber 8 to a high pressure is formed at the center of the base plate portion 21 of the fixed scroll 20. Further, the base plate portion 21 is formed with a through hole 12 for injecting the refrigerant into the compression chamber. The through hole 12 penetrates the base plate portion 21 at a position where it communicates with the compression chamber 8 before communicating with the discharge port 9.
  • a block-shaped valve body 23 and a spring 24 for urging the valve body 23 toward the injection port 130 are inserted into the through-hole 12 in order to open and close an injection port 130 described later.
  • the valve body 23 and the spring 24 function as a check valve that allows the flow of the refrigerant flowing into the compression chamber 8 from the injection port 130 through the through hole 12 and regulates the flow in the reverse direction. Details of the through hole 12, the valve body 23, and the spring 24 will be described later with reference to FIGS.
  • the through hole 12 corresponds to the first through hole of the present invention.
  • the compression chamber 8 is formed between the inward surface of the spiral tooth 22 of the fixed scroll 20 and the outward surface of the spiral tooth 28 of the orbiting scroll 26, and swings with the outward surface of the spiral tooth 22 of the fixed scroll 20. It is also formed between the inward surfaces of the spiral teeth 28 of the dynamic scroll 26. For this reason, in the scroll compressor 1 according to the first embodiment, two through holes 12 are formed in the base plate portion 21 of the fixed scroll 20.
  • the chamber 13 is fixed by a bolt or the like so as to cover the through-hole 12 on the surface (upper surface in FIG. 1) opposite to the surface on which the spiral teeth 22 are formed in the base plate portion 21 of the fixed scroll 20.
  • An injection port 130 communicating with the through hole 12 is formed in the chamber 13.
  • the injection port 130 includes an inlet 131 to which the injection pipe 14 is connected, and an outlet 132 that communicates the inlet 131 with the through hole 12 of the base plate portion 21 of the fixed scroll 20.
  • two outlets 132 are provided corresponding to the two through holes 12. For this reason, these two outflow ports 132 are configured to communicate with the inflow port 131 through the connection holes 133.
  • the injection pipe 14 is connected to the injection port 130 using the joint 14a. However, the injection pipe 14 may be directly connected to the injection port 130.
  • the chamber 13 corresponds to the fixing member of the present invention.
  • the other end side of the injection piping 14 is connected to a liquid receiver provided in the refrigerant cycle, for example. Then, the liquid refrigerant in the liquid receiver is injected (injected) into the compression chamber 8 through the injection pipe 14, the injection port 130 of the chamber 13, and the through hole 12 of the fixed scroll 20. Whether or not the coolant is allowed to flow through the injection pipe 14 can be switched by, for example, an electromagnetic valve. Note that the amount of refrigerant injected into the compression chamber 8 may be adjusted by adjusting the amount of refrigerant flowing through the injection pipe 14 using a capillary tube.
  • a discharge port 134 penetrating the chamber 13 is formed at a position facing the discharge port 9 of the base plate portion 21 of the fixed scroll 20.
  • a reed valve 15 that closes the discharge port 134 and a reed valve presser 16 that regulates the maximum opening of the reed valve 15 are attached to the chamber 13. That is, the refrigerant gas compressed in the compression chamber 8 passes through the discharge port 9 of the fixed scroll 20 and the discharge port 134 of the chamber 13, pushes up the reed valve 15 and is discharged into the discharge space 10.
  • the chamber 13 may be manufactured by being divided into a fixing member in which the discharge port 134 is formed and a fixing member in which the above-described injection port 130 is formed.
  • a hollow cylindrical boss 29 is formed at the center of the surface (the lower surface in FIG. 1) opposite to the surface on which the spiral teeth 28 are formed in the base plate portion 27 of the orbiting scroll 26.
  • An eccentric shaft portion 2a provided at one end of the main shaft 2 described later is inserted on the inner peripheral side of the boss portion 29 so as to be freely slidable.
  • An Oldham coupling 17 is provided between the orbiting scroll 26 and the frame 11.
  • the Oldham coupling 17 has a ring portion, a pair of Oldham keys formed on the upper surface of the ring portion, and a pair of Oldham keys formed on the lower surface of the ring portion.
  • the Oldham key on the upper surface is inserted into a key groove formed in the swing scroll 26 and is slidable in one direction.
  • the Oldham key on the lower surface is inserted into a key groove formed in the frame 11, and is slidable in a direction crossing the one direction.
  • the drive mechanism unit 4 has a function of driving the orbiting scroll 26 in order to compress the refrigerant gas by the compression mechanism unit 3. That is, when the drive mechanism unit 4 drives the orbiting scroll 26 via the main shaft 2, the compression mechanism unit 3 compresses the refrigerant gas.
  • the drive mechanism unit 4 includes a stator 18 fixed to the inner periphery of the shell 5 and a rotor 19 disposed on the inner periphery side of the stator 18.
  • the main shaft 2 is fixed to the rotor 19 by, for example, press fitting. That is, when the stator 18 is energized, the rotor 19 rotates together with the main shaft 2.
  • an eccentric shaft portion 2 a is formed that is rotatably inserted into the boss portion 29 of the swing scroll 26.
  • an oil supply passage serving as a passage for supplying the refrigerating machine oil stored in the oil reservoir to the compression mechanism 3 and each bearing is formed inside the main shaft 2.
  • FIG. 2 is an enlarged view of a main part showing the periphery of an injection through hole formed in the base plate of the fixed scroll in the scroll compressor according to Embodiment 1 of the present invention.
  • FIG. 3 is a plan view showing an example of a valve body of the scroll compressor according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic vertical sectional view showing the periphery of the through hole 12 formed in the base plate portion 21 of the fixed scroll 20.
  • FIG. 2A shows a state in which the valve body 23 moves to the side opposite to the injection port 130 (downward in FIG. 2), and the injection port 130 and the compression chamber 8 communicate with each other.
  • FIG. 2B shows a state in which the valve body 23 moves to the injection port 130 side (upward in FIG. 2) and closes the flow path between the injection port 130 and the compression chamber 8.
  • the through-hole 12 of the base plate part 21 of the fixed scroll 20 is composed of, for example, a large diameter part 12a and a small diameter part 12b.
  • the large diameter portion 12a is a hole opened to the injection port 130 side. That is, the large diameter portion 12 a is a hole that communicates with the injection port 130.
  • the small diameter portion 12b is a hole having an inner diameter smaller than that of the large diameter portion 12a, and is a through hole that communicates the large diameter portion 12a and the compression chamber 8.
  • the valve body 23 has an outer peripheral shape that is substantially the same as the inner peripheral shape of the large-diameter portion 12a, and is inserted into the large-diameter portion 12a.
  • the outer periphery of the valve body 23 is formed slightly smaller than the inner periphery of the large-diameter portion 12a, and can move up and down in the large-diameter portion 12a. That is, the valve body 23 is reciprocally movable in a direction approaching and moving away from the injection port 130.
  • valve body 23 is formed with a flow path 23 a when the refrigerant flowing into the through hole 12 from the injection port 130 flows out to the compression chamber 8.
  • the flow path 23 a is at least one groove 23 b formed on a surface of the valve body 23 that faces the large-diameter portion 12 a.
  • the flow path 23a is at least one notch 23c formed on a surface of the valve body 23 facing the large diameter portion 12a, as shown in FIG.
  • the flow path 23a is at least one through hole 23d that penetrates the valve body 23 in the reciprocating direction of the valve body 23, for example.
  • the bottom surface of the valve body 23 (the surface opposite to the injection port 130) is formed.
  • the flow path 23a may be formed.
  • the flow path 23 a is not necessarily provided in the valve body 23.
  • a groove or the like may be formed on the inner peripheral wall of the large diameter portion 12a, and the groove or the like may be used as the flow path 23a. That is, the flow path 23 a only needs to be formed between the valve body 23 and the through hole 12.
  • the through hole 23d corresponds to the second through hole of the present invention.
  • the spring 24 is also inserted into the through hole 12 formed in the base plate portion 21 of the fixed scroll 20.
  • the spring 24 is, for example, a compression spring in which a wire is wound in a coil shape, and is provided between the valve body 23 and the small diameter portion 12b. That is, one end of the spring 24 is in contact with the bottom of the large-diameter portion 12a, and the other end urges the valve body 23 toward the injection port 130.
  • the spring 24 is not limited to this configuration.
  • the spring 24 may be configured by a leaf spring or the like.
  • the shape of the through hole 12 is not limited to the above shape as long as the spring 24 can be fixed.
  • the valve body 23 is lowered to a position where the pressure of the refrigerant supplied to the injection port 130 balances the pressure of the refrigerant in the compression chamber 8 and the biasing force of the spring 24. Move to.
  • the refrigerant supplied to the injection port 130 flows into the large diameter portion 12a of the through hole 12, and is injected into the compression chamber 8 through the flow path 23a and the small diameter portion 12b.
  • the valve body 23 since the spring 24 that biases the valve body 23 toward the injection port 130 is provided, when the supply of the refrigerant to the injection pipe 14 is stopped, the valve body 23 causes the injection port 130 to be It is possible to close immediately, and to prevent the performance of the scroll compressor 1 from being deteriorated.
  • the valve body 23 and the spring 24 function as a check valve that prevents the refrigerant from flowing backward from the compression chamber 8 to the injection port 130.
  • the valve body 23 and the spring 24 are provided in the through hole 12 formed in the base plate portion 21 of the fixed scroll 20.
  • the scroll compressor 1 according to the first embodiment can prevent the refrigerant in the compression chamber 8 from flowing back to the injection port 130 when the refrigerant injection into the compression chamber 8 is stopped. Can be reduced. For this reason, the scroll compressor 1 which concerns on this Embodiment 1 can prevent that performance falls.
  • the valve body 23 and the spring 24 need only be inserted into the through hole 12. For this reason, the scroll compressor 1 according to the first embodiment can be easily assembled.
  • the scroll compressor 1 forms a check valve structure with a valve body 23 that can reciprocate in the through hole 12. For this reason, the thickness of the valve body 23 in the reciprocating direction can be increased.
  • a refrigeration cycle apparatus in which a scroll compressor is mounted may use a high-pressure refrigerant that has a higher pressure than conventional ones, such as carbon dioxide refrigerant.
  • a reed valve as described in Patent Document 1 is adopted as a check valve for preventing a back flow in the injection flow path, the reed valve has a structure that opens and closes the flow path by elastically deforming itself. For this reason, the thickness of the reed valve cannot be increased due to the structure.
  • valve body 23 according to the first embodiment can increase the thickness of the valve body 23 as described above. For this reason, the reliability of the scroll compressor 1 can also be improved by setting the thickness of the valve body 23 to a thickness that does not break even when a high pressure refrigerant such as carbon dioxide refrigerant is applied. .
  • Embodiment 2 the valve body 23 and the spring 24 are directly inserted into the through hole 12 formed in the base plate portion 21 of the fixed scroll 20. By assembling the valve body 23 and the spring 24 in the case as follows and inserting the case into the through hole 12, the assembly of the scroll compressor 1 can be further facilitated.
  • items that are not particularly described are the same as those in the first embodiment, and the same functions and configurations are described using the same reference numerals.
  • FIG. 4 is a diagram illustrating a valve body and a spring of a scroll compressor according to Embodiment 2 of the present invention, and a case that houses the valve body and the spring.
  • FIG. 5 is an enlarged view of a main part showing the periphery of an injection through hole formed in the base plate of the fixed scroll in the scroll compressor according to Embodiment 2 of the present invention.
  • 4A shows a state where the case 25 is disassembled.
  • FIG. 4B shows a state where the case 25 is assembled.
  • FIG. 5A shows a state in which the valve body 23 moves to the side opposite to the injection port 130 (downward in FIG. 5), and the injection port 130 and the compression chamber 8 communicate with each other.
  • FIG. 5B shows a state in which the valve body 23 moves to the injection port 130 side (upward in FIG. 5) and closes the flow path between the injection port 130 and the compression chamber 8.
  • the case 25 according to the second embodiment is inserted into the through hole 12 formed in the base plate portion 21 of the fixed scroll 20 as shown in FIG.
  • the case 25 is configured by combining a case component 25a and a case component 25b.
  • the case component 25 a includes an end plate 251 and a plurality of side wall members 252.
  • a through hole 253 is formed in the end plate 251.
  • the end plate 251 comes into contact with the chamber 13 when the case 25 is inserted into the through hole 12 formed in the base plate portion 21 of the fixed scroll 20.
  • the through hole 253 of the end plate 251 communicates with the injection port 130 of the chamber 13. That is, as shown by an arrow in FIG.
  • the through hole 253 of the end plate 251 serves as a flow path when the refrigerant flows from the injection port 130 into the case 25.
  • one end (the upper end in FIG. 5) of a plurality of side wall members 252 is connected to the outer peripheral portion of the end plate 251.
  • the case component 25b includes an end plate 254 and a plurality of side wall members 255.
  • the end plate 254 is farther from the chamber 13 than the end plate 251 of the case component 25 a when the case 25 is inserted into the through hole 12 formed in the base plate portion 21 of the fixed scroll 20. Placed on the side.
  • a plurality of side wall members 255 are connected to the outer peripheral portion of the end plate 254.
  • the end plate 254 is connected to the side wall member 255 at a position above one end (the lower end in FIG. 5) of the side wall member 255. That is, as shown in FIG. 5, when the case 25 is inserted into the through hole 12 formed in the base plate portion 21 of the fixed scroll 20, one end (the lower end in FIG.
  • the case 25 is assembled by sandwiching the side wall member 252 of the case part 25a with the side wall member 255 of the case part 25b. That is, the side wall of the case 25 includes the side wall member 252 and the side wall member 255. At this time, the space between the side wall members 255 is open. As shown by arrows in FIG. 4B, the space becomes a flow path when the refrigerant flowing into the case 25 from the injection port 130 flows out below the end plate 254.
  • the valve body 23 and the spring 24 are accommodated in the case 25 configured as described above.
  • the valve body 23 is reciprocally movable in the case 25 in a direction toward and away from the injection port 130. Then, the valve body 23 moves in a direction approaching the injection port 130 and closes the through hole 253 when contacting the end plate 251 of the case 25.
  • the spring 24 is housed in the case 25 so that one end abuts against the end plate 254 and the other end biases the valve body 23 toward the injection port 130.
  • the valve body 23 is connected to the injection port 130 in a state where the case 25 is inserted into the through hole 12 formed in the base plate portion 21 of the fixed scroll 20 as shown in FIG.
  • a flow path indicated by an arrow in FIG. 4B is formed.
  • the refrigerant that has flowed into the case 25 from the through hole 253 of the end plate 251 that communicates with the injection port 130 flows out between the side wall members 255 to the lower side of the end plate 254, and flows into the small diameter portion 12b. Is done.
  • the flow path is a flow path formed between the valve body 23 and the through hole 12. Note that the configuration and shape of the case 25 are not limited to the above-described configuration and shape as long as a flow path communicating the injection port 130 and the compression chamber 8 can be formed.
  • the valve body 23 is lowered to a position where the pressure of the refrigerant supplied to the injection port 130 balances the pressure of the refrigerant in the compression chamber 8 and the biasing force of the spring 24. Move to. Thereby, the refrigerant supplied to the injection port 130 flows into the case 25 from the through hole 253 of the end plate 251, flows between the side wall members 255, flows out below the end plate 254, and passes through the small diameter portion 12 b. Then, it is injected into the compression chamber 8.
  • the scroll compressor 1 according to the second embodiment if the case 25 is assembled in a state in which the valve body 23 and the spring 24 are accommodated, the case 25 is formed on the base plate portion 21 of the fixed scroll 20.
  • the valve body 23 and the spring 24 can be assembled simply by inserting into the formed through hole 12. For this reason, the scroll compressor 1 according to the second embodiment can more easily assemble the scroll compressor 1 than the first embodiment.
  • the structure of the scroll compressor 1 demonstrated in Embodiment 1 and Embodiment 2 is an example to the last. Even if each configuration of the scroll compressor 1 is appropriately changed within the range having the above-described functions, the present invention can be implemented. Further, by reversing the arrangement of the valve body 23 and the spring 24 described above, it can be used for purposes other than the check valve for injection. For example, if the arrangement of the valve body 23 and the spring 24 is reversed and no injection pipe is provided, the refrigerant is discharged from the compression chamber 8 to the discharge space 10 when the refrigerant is overcompressed in the compression chamber 8. be able to. Furthermore, the compression target of the scroll compressor according to the present invention is not limited to the refrigerant, and the above-described effects can be obtained even when the scroll compressor according to the present invention is used to compress other gases such as air and nitrogen gas. be able to.
  • 1 scroll compressor 2 main shaft, 2a eccentric shaft part, 3 compression mechanism part, 4 drive mechanism part, 5 shell, 6 suction pipe, 7 discharge pipe, 8 compression chamber, 9 discharge port, 10 discharge space, 11 frame, 12 through hole, 12a large diameter part, 12b small diameter part, 13 chamber, 14 injection piping, 14a fitting, 15 reed valve, 16 reed valve presser, 17 Oldham fitting, 18 stator, 19 rotor, 20 fixed scroll, 21 units Plate part, 22 spiral teeth, 23 valve body, 23a flow path, 23b groove, 23c notch, 23d through hole, 24 spring, 25 case, 25a case part, 25b case part, 26 swing scroll, 27 base plate part, 28 spiral teeth, 29 boss, 130 injection port, 131 inlet, 32 outlet, 133 connecting hole, 134 discharge port 251 end plate 252 side wall members, 253 through hole, 254 end plate 255 side wall member.

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

Abstract

L'invention concerne un compresseur à spirale comprenant : un trou traversant s'étendant à travers la plaque de base d'une spirale fixe de manière à être en communication avec une chambre de compression ; un élément fixe disposé sur une surface de la plaque de base de manière à recouvrir le trou traversant, la surface étant située du côté opposé à une spirale tournante, à l'intérieur de l'élément fixe un orifice d'injection étant formé, qui est en communication avec le trou traversant et auquel est raccordée une tuyauterie d'injection ; un corps de soupape inséré dans le trou traversant de manière à pouvoir effectuer un mouvement de va-et-vient ; et un ressort inséré dans le trou traversant et pressant le corps de soupape vers l'orifice d'injection. Le compresseur à spirale est conçu de telle sorte que : un trajet d'écoulement pour permettre à un fluide frigorigène ayant circulé dans un premier trou traversant à partir de l'orifice d'injection pour s'écouler dans la chambre de compression est formé dans le corps de soupape ou entre le corps de soupape et le trou traversant ; et lorsque le corps de soupape est pressé par le ressort et est déplacé vers le côté orifice d'injection, le corps de soupape ferme le trajet d'écoulement entre l'orifice d'injection et la chambre de compression.
PCT/JP2016/069137 2016-06-28 2016-06-28 Compresseur à spirale WO2018003016A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP16907249.3A EP3477113A1 (fr) 2016-06-28 2016-06-28 Compresseur à spirale
KR1020187031278A KR20180124130A (ko) 2016-06-28 2016-06-28 스크롤 압축기
JP2018524623A JP6641479B2 (ja) 2016-06-28 2016-06-28 スクロール圧縮機
PCT/JP2016/069137 WO2018003016A1 (fr) 2016-06-28 2016-06-28 Compresseur à spirale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/069137 WO2018003016A1 (fr) 2016-06-28 2016-06-28 Compresseur à spirale

Publications (1)

Publication Number Publication Date
WO2018003016A1 true WO2018003016A1 (fr) 2018-01-04

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PCT/JP2016/069137 WO2018003016A1 (fr) 2016-06-28 2016-06-28 Compresseur à spirale

Country Status (4)

Country Link
EP (1) EP3477113A1 (fr)
JP (1) JP6641479B2 (fr)
KR (1) KR20180124130A (fr)
WO (1) WO2018003016A1 (fr)

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CN109519384A (zh) * 2018-12-06 2019-03-26 珠海格力节能环保制冷技术研究中心有限公司 压缩机、热泵系统
WO2019171508A1 (fr) * 2018-03-07 2019-09-12 三菱電機株式会社 Compresseur rotatif

Families Citing this family (1)

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DE102022120678A1 (de) * 2022-08-16 2024-02-22 Bitzer Kühlmaschinenbau Gmbh Scrollmaschine mit Einspritzung sowie Kälteanlageollmaschine mit Einspritzung sowie Kälteanlage

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JPH0337385A (ja) * 1989-07-04 1991-02-18 Matsushita Electric Ind Co Ltd スクロール圧縮機
JPH11107950A (ja) * 1997-10-06 1999-04-20 Matsushita Electric Ind Co Ltd 圧縮機のインジェクション装置
JPH11166489A (ja) * 1997-12-04 1999-06-22 Mitsubishi Electric Corp スクロール圧縮機
US20080152526A1 (en) * 2006-12-22 2008-06-26 Michael Perevozchikov Vapor injection system for a scroll compressor
JP2011047383A (ja) * 2009-08-28 2011-03-10 Sanyo Electric Co Ltd スクロール圧縮機
JP2015086704A (ja) * 2013-10-28 2015-05-07 日立アプライアンス株式会社 スクロール圧縮機
JP2016011620A (ja) * 2014-06-27 2016-01-21 三菱電機株式会社 スクロール圧縮機

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JPS63266273A (ja) * 1987-04-24 1988-11-02 Hitachi Ltd バルブ装置
JPH0337385A (ja) * 1989-07-04 1991-02-18 Matsushita Electric Ind Co Ltd スクロール圧縮機
JPH11107950A (ja) * 1997-10-06 1999-04-20 Matsushita Electric Ind Co Ltd 圧縮機のインジェクション装置
JPH11166489A (ja) * 1997-12-04 1999-06-22 Mitsubishi Electric Corp スクロール圧縮機
US20080152526A1 (en) * 2006-12-22 2008-06-26 Michael Perevozchikov Vapor injection system for a scroll compressor
JP2011047383A (ja) * 2009-08-28 2011-03-10 Sanyo Electric Co Ltd スクロール圧縮機
JP2015086704A (ja) * 2013-10-28 2015-05-07 日立アプライアンス株式会社 スクロール圧縮機
JP2016011620A (ja) * 2014-06-27 2016-01-21 三菱電機株式会社 スクロール圧縮機

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019171508A1 (fr) * 2018-03-07 2019-09-12 三菱電機株式会社 Compresseur rotatif
CN111788391A (zh) * 2018-03-07 2020-10-16 三菱电机株式会社 旋转式压缩机
JPWO2019171508A1 (ja) * 2018-03-07 2020-12-10 三菱電機株式会社 ロータリ圧縮機
CN111788391B (zh) * 2018-03-07 2022-10-04 三菱电机株式会社 旋转式压缩机
CN109519384A (zh) * 2018-12-06 2019-03-26 珠海格力节能环保制冷技术研究中心有限公司 压缩机、热泵系统

Also Published As

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JP6641479B2 (ja) 2020-02-05
JPWO2018003016A1 (ja) 2019-01-31
EP3477113A4 (fr) 2019-05-01
KR20180124130A (ko) 2018-11-20
EP3477113A1 (fr) 2019-05-01

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