WO2020179051A1 - Compresseur à spirale - Google Patents

Compresseur à spirale Download PDF

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Publication number
WO2020179051A1
WO2020179051A1 PCT/JP2019/009040 JP2019009040W WO2020179051A1 WO 2020179051 A1 WO2020179051 A1 WO 2020179051A1 JP 2019009040 W JP2019009040 W JP 2019009040W WO 2020179051 A1 WO2020179051 A1 WO 2020179051A1
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WO
WIPO (PCT)
Prior art keywords
scroll
tooth
spiral
groove
orbiting scroll
Prior art date
Application number
PCT/JP2019/009040
Other languages
English (en)
Japanese (ja)
Inventor
貴也 木本
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 PCT/JP2019/009040 priority Critical patent/WO2020179051A1/fr
Priority to JP2019539875A priority patent/JP6608101B1/ja
Publication of WO2020179051A1 publication Critical patent/WO2020179051A1/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

Definitions

  • the present invention relates to a scroll compressor including a fixed scroll and an orbiting scroll.
  • the scroll compressor includes a fixed scroll having spiral spiral teeth formed so as to project on a fixed base plate, and an orbiting scroll having spiral spiral teeth formed so as to protrude on a rocking base plate. It is prepared so that the spiral teeth of each other mesh with each other.
  • the plurality of compression chambers formed by the fixed scroll and the orbiting scroll are gradually reduced from the outer side toward the inner side. It is for compression.
  • the present invention is to solve the above problems, and an object of the present invention is to provide a scroll compressor capable of suppressing a decrease in compression efficiency due to refrigerant gas leakage while preventing seizure of the tips of spiral teeth.
  • a scroll compressor includes a fixed scroll having spiral spiral teeth formed on a fixed base plate, and a swing having spiral spiral teeth formed on a swing base plate.
  • a scroll and so that the spiral teeth of each other mesh with each other, orbitally revolving the orbiting scroll with respect to the fixed scroll, a plurality of compression chambers configured by the fixed scroll and the orbiting scroll,
  • a scroll compressor that compresses by gradually reducing from the outer side to the inner side, wherein at least one of the fixed scroll or the orbiting scroll has spiral teeth on a side surface from a root side to a tip side.
  • a plurality of groove portions for allowing the lubricating oil to flow therethrough each groove portion being provided to be inclined with respect to the central axis direction of the fixed scroll or the orbiting scroll, and the end on the tooth tip side.
  • the non-stacked portion is provided with a constant interval between the groove portions adjacent to each other in the rotation direction of the orbiting scroll in the rotation direction in each of the groove portions so as not to overlap each other in the rotation direction. It has been formed.
  • the groove portion provided on the side surface of at least one spiral tooth of the fixed scroll or the orbiting scroll allows the lubricating oil collected at the tooth bottom by the pressure difference between the adjacent compression chambers to be tooth bottom. Side to tip side.
  • the non-stacked portions are formed between the groove portions adjacent to each other in the rotation direction of the orbiting scroll, the non-stacked portions having a constant interval that does not overlap each other in the rotation direction are formed. It is possible to prevent the refrigerant gas from leaking.
  • the scroll compressor of the present invention it is possible to prevent seizure of the tips of the spiral teeth while suppressing a decrease in compression efficiency due to refrigerant gas leakage.
  • FIG. 7 is a vertical cross-sectional view showing a compression mechanism portion of a scroll compressor according to a modified example of the first embodiment of the present invention. It is a side view which shows the swing scroll which concerns on Embodiment 2 of this invention.
  • FIG. 1 is a vertical sectional view showing a scroll compressor 1 according to Embodiment 1 of the present invention.
  • the scroll compressor 1 includes a compression mechanism unit 10 and an electric motor unit 20 for driving the compression mechanism unit 10 inside the closed container 2.
  • the compression mechanism unit 10 includes a fixed scroll 11 and an orbiting scroll 12.
  • the electric motor unit 20 includes a rotor 21 and a stator 22, and drives the compression mechanism unit 10 via the main shaft 30.
  • the main shaft 30 drives the compression mechanism unit 10 when the rotor 21 of the electric motor unit 20 is fixed by shrink fitting or the like and rotates as the rotor 21 rotates. Further, the refrigerating machine oil 51 is stored in the oil sump 50 located at the lower part of the scroll compressor 1, and the refrigerating machine oil 51 is sucked up by the oil supply mechanism 31 provided at the lower end of the main shaft 30 and is sucked up in each sliding portion. Supplied. The refrigerating machine oil 51 sucked up to the tip of the main shaft 30 is carried to the compression chamber 14 via the installation space of the old dam ring 13, moves to the center of the spiral with the compression of the refrigerant gas, and is returned to the closed container 2 again.
  • FIG. 2 is a perspective view showing the orbiting scroll 12 in the scroll compressor 1 of FIG.
  • FIG. 3 is a cross-sectional view showing the compression mechanism section 10 of the scroll compressor 1 of FIG. 1 as viewed from below.
  • FIG. 4 is a schematic view showing a side surface of the compression mechanism portion 10 of FIG. 3 when viewed from the direction A.
  • FIG. 5 is a schematic diagram showing a state of the orbiting scroll 12 of FIG. 4 during operation.
  • the compression mechanism portion 10 of the scroll compressor 1 meshes the spiral spiral teeth 111 of the fixed scroll 11 and the spiral spiral teeth 121 of the orbiting scroll 12 with each other.
  • the fixed scroll 11 includes spiral teeth 111 provided in a spiral shape on the fixed base plate.
  • a suction pipe 61 for sucking the refrigerant gas and a suction port 41 for taking in the low-temperature refrigerant gas sucked from the suction pipe 61 are provided on the side of the fixed scroll 11.
  • a discharge port 42 for discharging a compressed gas as a heating medium is provided in the central portion of the fixed scroll 11.
  • a suction pipe 61 is press-fitted into the fixed scroll 11.
  • the outer peripheral portion of the fixed scroll 11 is fastened to the guide frame 19 with a bolt (not shown).
  • the orbiting scroll 12 has spiral teeth 121 provided in a spiral shape on the orbiting base plate 12a.
  • the fixed scroll 11 and the orbiting scroll 12 are installed so that the respective spiral teeth 111 and 121 are meshed with each other, thereby forming the compression chamber 14.
  • the orbiting scroll 12 is provided with an orbiting bearing 3 and is rotatably supported by the orbiting shaft portion 30a at the upper end of the main shaft 30. Further, the swing scroll 12 is engaged with the oldham mechanism 4 so as to be reciprocally slidable.
  • the orbiting scroll 12 is capable of eccentric orbital motion without rotating about the fixed scroll 11.
  • a space 5 is provided below the guide frame 19, and a discharge pipe 62 communicating with the outside of the scroll compressor 1 is connected to the space 5.
  • a discharge gas space 6 is provided in the upper part of the closed container 2 as a space in which the compressed gas sucked into the compression chamber 14 from the outside is compressed and discharged as a heating medium of high temperature and high pressure.
  • the spiral tooth 121 of the swing scroll 12 has a plurality of groove portions 15 on the outward side surface for flowing the refrigerating machine oil 51 as lubricating oil from the tooth bottom 123 side to the tooth tip 122 side.
  • These groove portions 15 are provided so as to be inclined with respect to the central axis direction of the orbiting scroll 12 in the direction opposite to the rotation direction X of the orbiting scroll 12. That is, each groove 15 is inclined in the direction opposite to the rotation direction X of the orbiting scroll 12 from the end portion 15a serving as the starting point on the tooth bottom 123 side toward the end portion 15b on the tooth tip 122 side. Further, these groove portions 15 are formed so that the end portions 15b on the tooth tip 122 side are opened. Further, between the groove portions 15 adjacent to each other in the rotation direction X of the orbiting scroll 12 in the groove portions 15, there is formed a non-stacked portion L1 provided with a constant interval that does not overlap each other in the rotation direction X. There is.
  • the compression mechanism unit 10 takes in the low-temperature refrigerant gas sucked from the suction pipe 61 from the suction port 41, and fills the compression chamber 14 formed by the spiral teeth 111 and 121 of the fixed scroll 11 and the swing scroll 12 with the refrigerant gas.
  • the orbiting scroll 12 eccentrically orbits with respect to the fixed scroll 11 as the main shaft 30 rotates, and the volume of the compression chamber 14 is sequentially reduced to compress the refrigerant gas, and the refrigerant gas is discharged from the discharge port 42 into the closed container 2. ..
  • the refrigerating machine oil 51 sucked from the oil sump 50 also flows into the compression chamber 14 and is carried to the center of the spiral together with the refrigerant gas.
  • the discharge gas discharged as the heating medium is filled in the discharge gas space 6 in the closed container 2, passes through the space 5 under the guide frame 19, and is discharged from the discharge pipe 62 to the outside of the scroll compressor 1. Is exhaled.
  • the refrigerating machine oil 51 taken in together with the refrigerant gas collects on the bottom of the compression chamber 14 and lubricates the sliding parts of the fixed scroll 11 and the orbiting scroll 12.
  • the pressure in the plurality of compression chambers 14 is higher toward the center of the spiral, and for example, in the compression chambers 14H and 14L, 14H has a higher pressure.
  • the tooth tip 122 side of each groove 15 is inclined in a direction opposite to the rotation direction X of the orbiting scroll 12. Therefore, when paying attention to one groove portion 15, the refrigerating machine oil 51 moves from the bottom 123 side of the compression chamber 14L side where the refrigerating machine oil 51 is accumulated to the adjacent compression chamber 14H side.
  • the pressure on the tooth bottom 123 side of the groove 15 is higher than that on the tooth tip 122 side. Therefore, the refrigerating machine oil 51 is pushed up along the groove 15 by this pressure difference, moves to the tooth tip 122 side of the orbiting scroll 12, and the tooth tip 122 side can be lubricated.
  • the groove portion 15 When the groove portion 15 is provided on the side surface of the spiral tooth 121, the groove portion 15 functions as a communication path between the compression chambers 14, and the refrigerant gas may leak from the high pressure side to the low pressure side, which may cause a decrease in efficiency. .. Therefore, in the scroll compressor 1 according to the first embodiment, a non-product is provided between the groove portions 15 adjacent to each other in the rotation direction X of the orbiting scroll 12 with a certain interval that does not overlap each other in the rotation direction X. The overlapping portion L1 is formed. Therefore, there is always one groove 15 for each partition of the compression chamber 14, the amount of refrigerant gas leakage is very small, and the refrigerator oil 51 is guided to the tooth tip 122 side while suppressing a decrease in compression efficiency.
  • the refrigerating machine oil 51 guided to the tooth tip 122 side has flowed into the compression chamber 14 and is not supplied from the high temperature back pressure chamber or the like. Therefore, loss such as the refrigerant gas being heated by the high-temperature refrigerating machine oil 51 can be suppressed, and the compressor efficiency can be improved.
  • the rotation direction of the swing scroll 12 is on the side surface of the spiral teeth 121 of the swing scroll 12 with respect to the central axis direction of the swing scroll 12.
  • a plurality of groove portions 15 inclined in the direction opposite to X are provided. Therefore, these groove portions 15 can guide the refrigerating machine oil 51 accumulated on the tooth bottom 123 side due to the pressure difference between the adjacent compression chambers 14 from the tooth bottom 123 side to the tooth tip 122 side.
  • non-stacked portions L1 provided with a constant interval so as not to overlap each other in the rotation direction X are formed.
  • the scroll compressor 1 of the first embodiment it is possible to prevent a seizure of the tooth tip 122 of the spiral tooth 121 and suppress a decrease in compression efficiency due to a refrigerant gas leak.
  • the groove 15 is provided on the side surface of the spiral tooth 121 of the orbiting scroll 12
  • the present invention is not limited to this.
  • the groove portion 15 may be similarly formed on the side surface of the spiral tooth 111 of the fixed scroll 11, or, as described later, the side surface of the spiral tooth 111 of the fixed scroll 11 and the spiral tooth 121 of the orbiting scroll 12. It may be formed on both sides.
  • the inclination direction of the groove portion 15 may be the same direction as the rotation direction X of the orbiting scroll 12 as described later.
  • FIG. 6 is a vertical cross-sectional view showing the compression mechanism section 10 of the scroll compressor 1 according to the modified example of the first embodiment of the present invention.
  • the groove portion 15 can be formed not only on the outer surface of the orbiting scroll 12 but also on the inner surface on the opposite side. That is, the groove portion 15 may be provided on both the outward surface and the inward surface of the side surface of the spiral tooth 121. In this way, when the groove portion 15 is provided on both the outward surface and the inward surface of the side surface of the spiral tooth 121, it is desirable to install the groove portion 15 so that the end portion 15b on the tooth tip 122 side does not overlap. Further, the groove portion may be formed not only on the outer surface of the orbiting scroll 12 but on the inner surface on the opposite side.
  • the same effect as that of the first embodiment can be obtained, but when the groove portion 15 is provided on both the outward surface and the inward surface of the side surface of the spiral tooth 121, the effect on the outward surface side and the effect on the inward surface side are obtained. A synergistic effect due to both the effect and the effect can be obtained.
  • FIG. 7 is a side view showing the orbiting scroll 12 according to the second embodiment of the present invention. The description of the same components as those in the first embodiment will be omitted.
  • the position of the end portion 15a which is the starting point of the groove portion 15 on the side surface of the spiral tooth 121 of the swing scroll 12 on the tooth bottom 123 side, is higher toward the spiral center side. is set up.
  • the position of the end portion 15a as a starting point arranged on the tooth bottom 123 side of the groove portion 15 is arranged at a position closer to the tooth tip 122 side toward the spiral center of the spiral tooth 121.
  • the groove portion 15 has its entire length shortened toward the spiral center side of the spiral tooth 121.
  • a non-stacked portion L2 provided at a constant interval so as not to overlap each other in the rotation direction X.
  • the compression chamber 14 (see FIG. 1) of the scroll compressor 1 compresses the refrigerant gas toward the center of the spiral while reducing the volume thereof as the orbiting scroll 12 rotates.
  • the refrigerating machine oil 51 is also conveyed to the center of the spiral, but since the refrigerating machine oil 51 is a liquid, the compressibility is small and the amount of change in volume is small. Therefore, the ratio of the volume of the refrigerator oil 51 to the volume of the compression chamber 14 increases toward the center of the spiral, and the height of the refrigerator oil 51 accumulated in the compression chamber 14 increases.
  • the refrigerating machine oil 51 reaches the tooth tip 122 even if the position of the end portion 15a of the groove portion 15 on the tooth bottom 123 side is raised toward the center of the spiral. Can be derived.
  • the groove 15 provided on the side surface of the spiral tooth 121 of the orbiting scroll 12 serves as a refrigerant gas leakage path as described above, and therefore the groove 15 is preferably short. Therefore, as in the second embodiment, the length of the groove portion 15 can be shortened by increasing the arrangement of the end portion 15a of the groove portion 15 on the tooth bottom 123 side toward the center of the spiral. Therefore, the refrigerator oil 51 can be appropriately guided to the tooth tip 122 while suppressing the leakage amount of the refrigerant gas, and seizure of the tooth tip 122 can be prevented.
  • the volume of the compression chamber 14 becomes smaller toward the center of the spiral. Therefore, even if the position of the end portion 15a arranged on the tooth bottom 123 side of the groove portion 15 becomes higher toward the tooth tip 122 side, the refrigerating machine oil can be guided to the tooth tip 122 side, and the groove portion 15 can be guided. By shortening the length of the, the amount of refrigerant gas leakage on the side surface of the spiral tooth 121 can be reduced.
  • FIG. 8 is a plan view showing the orbiting scroll 12 according to Embodiment 3 of the present invention. The description of the same components as those in the first embodiment will be omitted.
  • the tip of the groove portion 15 provided on the side surface of the spiral tooth 121 on the tip 122 side.
  • a recess 16 is provided around the portion 15b.
  • the size of the recess 16 is smaller than the thickness of the spiral tooth 121, and the installation position of the recess 16 is on the side opposite to the rotation direction X of the orbiting scroll 12 with respect to the end 15b of the groove 15 on the tip 122 side. desirable.
  • the refrigerating machine oil 51 guided from the tooth bottom 123 side to the tooth tip 122 side along the groove portion 15 is provided in the concave portion 16. Be stored.
  • the refrigerating machine oil 51 stored in the recess 16 spreads at the tooth tips 122 as the orbiting scroll 12 rotates due to the viscosity of the refrigerating machine oil 51 or the frictional force with the tooth bottom 113 side of the fixed scroll 11 (see FIG. 6 ).
  • the entire surface on the tip 122 side is lubricated. As a result, the lubricity of the tooth tip 122 is improved, and the seizure resistance can be further improved.
  • the recess 16 is provided around the end portion 15b of the groove portion 15 on the tooth tip 122 side, so that the tooth is formed along the groove portion 15 from the tooth bottom 123 side.
  • Refrigerating machine oil 51 led to the tip 122 side is stored in the recess 16.
  • the refrigerating machine oil 51 is dragged from the recess 16 as the orbiting scroll 12 rotates, and can lubricate the entire tip 122 side.
  • the lubricity of the tooth tip 122 is improved, and the seizure resistance can be further improved.
  • FIG. 9 is a plan view showing the orbiting scroll 12 according to Embodiment 4 of the present invention. The description of the same components as those in the first embodiment will be omitted.
  • the tip of the groove portion 15 provided on the side surface of the spiral tooth 121 on the tip 122 side.
  • An addendum groove 17 is provided that connects the portion 15b and the addendum 122 surface.
  • the addendum groove 17 extends in the direction opposite to the rotation direction X of the orbiting scroll 12 and is provided for each groove portion 15. Then, the tooth crests 17 are installed so as not to communicate with each other.
  • the addendum groove 17 extends from the end part 15 b on the addendum 122 side of the groove part 15 on the side surface of the spiral tooth 121. Therefore, the refrigerating machine oil 51 guided from the tooth bottom 123 side flows into the tooth tip groove 17 and is stored in the tooth tip groove 17 as the orbiting scroll 12 rotates.
  • the refrigerating machine oil 51 stored in the addendum groove 17 can not only lubricate the section where the addendum groove 17 is provided, but also lubricate the entire surface of the addendum 122 as in the third embodiment. Further, the addendum groove 17 has a certain area with respect to the total area of the addendum 122, and the refrigerating machine oil 51 having a pressure is poured therein.
  • the refrigerating machine oil 51 stored in the tooth tip groove 17 not only lubricates the section in which the tooth tip groove 17 is provided, but also implements the practice.
  • the entire surface of the tooth tip 122 can be lubricated as in the case of the third embodiment.
  • the pressure of the inflowing refrigerating machine oil 51 causes a pressure in a direction separating the spiral tooth 121 and the spiral tooth 111, and the spiral tooth 121 and the spiral tooth 121.
  • the pressing load on the teeth 111 can be reduced to prevent seizure.
  • FIG. 10 is a vertical cross-sectional view showing the compression mechanism section 10 of the scroll compressor 1 according to the fifth embodiment of the present invention. The description of the same components as those in the first embodiment will be omitted.
  • a groove 18 similar to the groove 15 of the above-described first embodiment is provided on the side surface of the spiral tooth 111 of the fixed scroll 11.
  • the end portion of the fixed scroll 11 on the tooth tip 112 side, not shown is inclined in the same direction as the rotation direction X of the orbiting scroll 12.
  • the groove portions 18 adjacent to each other in the rotation direction X of the orbiting scroll 12 have a section in which they do not overlap in the central axis direction, and the tooth bottom 113 side end portion (not shown). Is provided with a groove 18 up to the surface of the tooth bottom 113.
  • the movement route of the refrigerating machine oil 51 is the same as that of the first embodiment.
  • the groove portion 18 of the spiral tooth 111 moves from the tooth tip 112 side of the fixed scroll 11 to the high-pressure compression chamber 14. Therefore, the refrigerating machine oil 51 accumulated in the tooth bottom 123 of the swing scroll 12 around the tooth tip 112 side end of the fixed scroll 11 is placed along the groove 18 of the spiral tooth 111 of the fixed scroll 11 by a pressure difference. It is guided to the bottom 113.
  • the refrigerating machine oil 51 which is guided to the tooth bottom 113 which is the upper part of the compression chamber 14 and lifted, is dragged toward the tooth tip 122 side of the swing scroll 12 as the rocking scroll 12 rotates, and lubricates the tooth tip 122.
  • the end portion of the groove portion 18 of the spiral tooth 111 on the tooth bottom 113 side is up to the surface of the tooth bottom 113, but it may be communicated with the groove portion 18 and provided with a recessed portion on the tooth bottom 113.
  • the groove portion 18 is provided only on the inward surface on the side surface of the spiral tooth 111, but it may be provided only on the outward surface or on both the inward surface and the outward surface.
  • FIG. 11 is a side view showing an orbiting scroll 12 according to a modification of the fifth embodiment of the present invention.
  • the scroll compression in the first embodiment is different except that the groove portion 15 is inclined in the rotation direction X of the orbiting scroll 12. It has the same configuration as the machine 1.
  • the compression ratio may be small and the pressure difference between the adjacent compression chambers 14 may be small. In that case, it may be more effective to push up the refrigerating machine oil 51 by the wedge effect of the refrigerating machine oil 51 rather than carrying the refrigerating machine oil 51 due to the pressure difference.
  • the contact between the spiral teeth 111 and 121 has a large gap before and after the sliding point unlike bearings and the like, so that the influence of the wedge effect is small and the refrigerating machine oil 51 is difficult to rise due to the influence of the pressure difference.
  • the groove portion 15 is inclined in the same direction as the rotation direction of the orbiting scroll 12, it is desirable to install the groove portion 15 in a range in which the gap between the spiral teeth 111 and 121 is small by, for example, making the inclination closer to the vertical direction. Thereby, the influence of the pressure difference between the adjacent compression chambers 14 can be reduced and the wedge effect can be easily generated.
  • a groove portion 18 similar to the above is provided. Therefore, the refrigerating machine oil 51 collected at the tooth bottom 123 of the orbiting scroll 12 around the tip 112 side end of the fixed scroll 11 has a pressure difference along the groove portion 18 of the spiral tooth 111 of the fixed scroll 11. It is guided to the tooth bottom 113.
  • the refrigerating machine oil 51 guided to the tooth bottom 113, which is the upper part of the compression chamber 14, is dragged toward the tooth tip 122 side of the swing scroll 12 as the rocking scroll 12 rotates, and lubricates the tooth tip 122.
  • the refrigerating machine oil 51 can be guided to the tooth tip 112 side by the wedge effect instead of the pressure difference. In particular, it is effective when the pressure difference between the adjacent compression chambers 14 is small.
  • FIG. 12 is a side view showing a fixed scroll and an orbiting scroll according to another embodiment of the present invention.
  • a groove portion 15 and a groove portion 18 may be provided on both surfaces on which the spiral teeth 121 of the swing scroll 12 and the spiral teeth 111 of the fixed scroll overlap each other.
  • the respective groove portions 15 and 18 are installed so as to have a section that does not overlap in the axial direction.
  • the groove portions 15 and the groove portions 18, the groove portions 15 adjacent to each other in the rotation direction X of the orbiting scroll 12, and the groove portions 18 are provided with a constant interval that does not overlap each other in the rotation direction X.
  • the stacking portion L4 is formed. As described above, the adjacent groove portions 15 and 18, the groove portions 15 and the groove portions 15 are prevented from overlapping with each other in the central axis direction, so that the leakage of the refrigerant gas is suppressed and the lubricity of the tooth tip 122 side is improved. Can be improved.

Abstract

La présente invention concerne un compresseur à spirale pourvu d'une spirale fixe et d'une spirale orbitale ayant des dents en spirale qui s'engrènent les unes avec les autres, et qui effectue une compression en amenant la volute orbitale à tourner autour de la spirale fixe, les dents en spirale de la spirale fixe et/ou de la spirale orbitale comprenant de multiples rainures formées dans la surface latérale pour faire circuler une huile lubrifiante depuis le côté base de dent vers le côté pointe de dent, chaque rainure est inclinée par rapport à la direction d'axe central de la spirale fixe ou de la spirale orbitale, l'extrémité sur le côté pointe de dent est ouverte, et, entre des rainures adjacentes l'une à l'autre dans la direction de rotation de la spirale orbitale dans les rainures, des sections non chevauchantes sont formées comprenant des intervalles prescrits où il n'y a pas de chevauchement dans la direction de rotation. Par ce moyen, il est possible de supprimer les baisses d'efficacité de compression dues à des fuites de gaz de refroidissement, tout en empêchant les pointes des dents en spirale de se gripper.
PCT/JP2019/009040 2019-03-07 2019-03-07 Compresseur à spirale WO2020179051A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2019/009040 WO2020179051A1 (fr) 2019-03-07 2019-03-07 Compresseur à spirale
JP2019539875A JP6608101B1 (ja) 2019-03-07 2019-03-07 スクロール圧縮機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/009040 WO2020179051A1 (fr) 2019-03-07 2019-03-07 Compresseur à spirale

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WO2020179051A1 true WO2020179051A1 (fr) 2020-09-10

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JP (1) JP6608101B1 (fr)
WO (1) WO2020179051A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5540261A (en) * 1978-09-18 1980-03-21 Hitachi Ltd Scroll type fluid machine
JPS56156490A (en) * 1980-05-06 1981-12-03 Hitachi Ltd Enclosed scroll compressor
JPH05332272A (ja) * 1992-06-04 1993-12-14 Hitachi Ltd スクロール圧縮機
JP2008232048A (ja) * 2007-03-22 2008-10-02 Matsushita Electric Ind Co Ltd スクロール圧縮機
JP2008267150A (ja) * 2007-04-16 2008-11-06 Sanden Corp 流体機械

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5540261A (en) * 1978-09-18 1980-03-21 Hitachi Ltd Scroll type fluid machine
JPS56156490A (en) * 1980-05-06 1981-12-03 Hitachi Ltd Enclosed scroll compressor
JPH05332272A (ja) * 1992-06-04 1993-12-14 Hitachi Ltd スクロール圧縮機
JP2008232048A (ja) * 2007-03-22 2008-10-02 Matsushita Electric Ind Co Ltd スクロール圧縮機
JP2008267150A (ja) * 2007-04-16 2008-11-06 Sanden Corp 流体機械

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JPWO2020179051A1 (ja) 2021-03-11
JP6608101B1 (ja) 2019-11-20

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