WO1998055767A1 - Compresseur a helices horizontal - Google Patents

Compresseur a helices horizontal Download PDF

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Publication number
WO1998055767A1
WO1998055767A1 PCT/JP1998/002406 JP9802406W WO9855767A1 WO 1998055767 A1 WO1998055767 A1 WO 1998055767A1 JP 9802406 W JP9802406 W JP 9802406W WO 9855767 A1 WO9855767 A1 WO 9855767A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
space
discharge
refrigerant
scroll member
Prior art date
Application number
PCT/JP1998/002406
Other languages
English (en)
Japanese (ja)
Inventor
Satoru Kawai
Hiromichi Tanabe
Hiroaki Oike
Original Assignee
Zexel Corporation
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 Zexel Corporation filed Critical Zexel Corporation
Publication of WO1998055767A1 publication Critical patent/WO1998055767A1/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
    • 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 invention relates to a scroll compressor used for compressing a refrigerant of an air conditioner, and more particularly to a horizontally arranged scroll compressor arranged horizontally.
  • the scroll compressor disclosed in Fig. 3 of Japanese Patent Publication No. 59-299791 is a horizontal scroll compressor in which an oil reservoir is provided below the closed case. Disclosed is one in which a discharge hole is provided that passes through the center of the roll member in the axial direction, and an oil separation element 29 is provided around the discharge hole.
  • the electric compressor disclosed in Japanese Patent Application Laid-Open No. 6-3446884 is a horizontal type scroll compressor in which an oil reservoir is provided below a closed case, and a fixed scroll member is provided. A discharge hole penetrating the center is provided, and a net 21 is provided around the discharge hole.
  • FIGS. 2 and 4 of Japanese Patent Publication No. 7-189952 disclose a horizontal scroll compressor in which an oil reservoir is provided below a closed case.
  • the discharge space communicating with the discharge hole is defined by a cover without a reference numeral, and the discharge space and the high-pressure space in which the driving device is arranged are provided on the outer periphery of the fixed end plate. It is communicated via a discharge passage and a discharge passage provided in the bearing component.
  • the oil contained in the oil reservoir is sucked by a pump attached to one end of the drive shaft and sent to the other end of the drive shaft via an oil supply path formed in the drive shaft.
  • the separation element of the scroll compressor which has a predetermined ventilation resistance, can absorb the pulsating flow of the refrigerant discharged from the discharge hole to some extent, but has the problem that the efficiency is reduced.
  • the separation element is removed, the discharge resistance is reduced, but the level of the oil contained in the oil reservoir is disturbed by the pulsating flow of the discharged refrigerant, and the level of the oil is lowered. As a result, the high-pressure refrigerant is sucked into the oil supply pipe, which hinders the oil suction.
  • the pulsating flow of the refrigerant discharged from the discharge hole is absorbed to some extent by a wire mesh arranged in front of the discharge hole.
  • the pump that sucks the oil is located at the tip of the drive shaft. Is less affected.
  • the cost increases due to an increase in the number of parts and the number of work steps. There is.
  • the oil suction pipe which is the most upstream side of the lubricating oil path, is arranged near the component requiring lubrication, and the discharge port
  • An object of the present invention is to provide a horizontal scroll compressor capable of suppressing disturbance of an oil level due to a pulsating flow of a refrigerant discharged from a scroll. Disclosure of the invention
  • the present invention provides a substantially cylindrical sealed case having a shaft in a horizontal direction and having a refrigerant suction pipe and a refrigerant discharge pipe disposed therein, a driving means disposed in the closed case, A high-pressure space communicated with the refrigerant discharge pipe, an oil reservoir provided below the sealed case, a rotating shaft extending in the horizontal direction from the driving means, A block for rotatably holding the rotary shaft, an oil suction pipe having one end attached to the block and the other end immersed in the oil reservoir, and a front eccentric to the center axis of the rotary shaft.
  • An eccentric shaft extending from an end of the rotating shaft, a oscillating scroll member mounted on the eccentric shaft and having a spiral oscillating scroll on a side opposite to the eccentric shaft, and the oscillating scroll member Swingably between the block A fixed scroll member to be held; a compression chamber defined by the swing scroll member and the fixed scroll member, one end of which is appropriately communicated with the refrigerant suction pipe;
  • a horizontal scroll compressor having a discharge hole penetrating the center and communicating with the final stage of the compression chamber, a cover defining a discharge space communicating with the discharge hole is provided, and A coolant passage is provided to shut off the space from the oil reservoir and communicate the discharge space and the high-pressure space.
  • the cover is provided to shut off the oil reservoir from the discharge space communicating with the discharge hole in pressure, and the refrigerant passage communicating the discharge space with the high-pressure space is provided.
  • the refrigerant discharged from the discharge space flows directly from the discharge hole to the high-pressure space via the discharge space, so that the refrigerant flows downward as in the conventional case.
  • the oil level of the oil is not directly affected by the pulsating flow of the refrigerant discharged from the discharge hole, so that the oil level of the oil suction pipe arranged in the block is suppressed and the oil level is disturbed.
  • the oil reservoir side space separated from the discharge space by the cover serves as a buffer space against fluctuations in the oil level on the high pressure space side.
  • the present invention is characterized in that a pressure equalizing hole is provided for communicating the high pressure space with the oil reservoir side space which is cut off from the discharge space.
  • a pressure equalizing hole is provided for communicating the high pressure space with the oil reservoir side space which is cut off from the discharge space.
  • both the refrigerant passage and the pressure equalizing hole are formed so as to penetrate the fixed scroll member and the block. May be formed to form a detour passage.
  • FIG. 1 is a cross-sectional view of a horizontal scroll compressor according to an embodiment of the present invention.
  • FIG. 2 is a partial sectional view of the horizontal scroll compressor according to the embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of a horizontal type scroll compressor according to the embodiment of the present invention, taken along a cross section perpendicular to the cross section of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • a horizontal scroll compressor 1 shown in FIGS. 1 to 3 includes a sealed case 2 having a center axis extending in the horizontal direction, a driving unit 3 disposed in the sealed case 2, It is composed of a compression unit 4 driven by the unit 3.
  • the closed case 2 includes a cylindrical case 6 having a refrigerant suction pipe 5 attached to a side portion thereof, and a pair of lids 7A and 7B closing both ends of the cylindrical case 6.
  • the one lid 7A is provided with a coolant discharge pipe 8 and a power supply terminal 9 for supplying electric power to the drive unit 3.
  • the drive unit 3 is a brushless motor, and is fixed to the inner peripheral surface of the cylindrical case 6, and has an exciting coil 10 wound thereon to generate a rotating magnetic field 11.
  • a mouth 12 having permanent magnets arranged at positions facing the stay 11 and having magnetic poles alternately different from each other; and a rotating shaft to which the rotor 12 is fixed. 1 3.
  • the rotating shaft 13 is provided so as to extend in the horizontal direction, and one end of the lid 7A is connected to a bearing provided at a central portion of a holding plate 14 fixed to the cylindrical case 5. It is rotatably held by a sub bearing 18.
  • the holding plate 14 has a coolant passage 14A formed therein, and a coolant guide 14B is formed at a portion facing the coolant passage 14A.
  • a coolant guide 14B is formed at a portion facing the coolant passage 14A.
  • the other end of the rotary shaft 13 has an enlarged diameter portion 13 A formed by expanding the diameter, and further has an eccentric shaft protruding eccentrically from the center axis of the rotary shaft 13. 1 4 is formed.
  • the enlarged diameter portion 13A formed on the other end side of the rotating shaft 13 is attached to a through hole 16 of a block 15 fixed to the inner peripheral surface of the cylindrical case. Mainly supported by main bearings 17.
  • a balance between the rotor 12 of the rotating shaft 13 and the enlarged diameter portion 13A for obtaining a rotational balance with the orbiting scroll member 20 described below is provided. Wait 19 is set up.
  • the compression section 4 is combined with the block 15, a swing scroll member 20 mounted on the eccentric shaft 14, and the movable scroll member 20 to form a compression chamber 30. It is composed of a fixed scroll member 40 which is defined.
  • the block 15 has a through hole 16 passing through the center thereof in the axial direction (hereinafter, axial direction) of the center axis of the rotating shaft 13, and the through hole 16 has a main bearing. 1 7 is installed.
  • a step 51 for holding the seal bearing 50 is formed at the end of the through hole 16 on the side of the swing scroll member 20, and the swing scroll member of the step 51 is further formed.
  • On the 20 side there is formed a turning space 52 in which a swing bearing 21 described below turns.
  • a thrust bearing 53 for slidably holding the revolving scroll member 20 is formed on an end face of the swinging scroll member 20 of the block 15, and furthermore, on this end face.
  • the oscillating scroll member 20 has an oscillating scroll side dam at a position perpendicular to the block-side Oldham's ring engagement groove 55 on a surface that slides in contact with the thrust bearing 53.
  • a ring engaging groove 22 is formed, and the claw portion of the Oldham ring 56 accommodated in the Oldham ring accommodating groove 54 is connected to the block-side Oldham ring engaging groove 55 and the swinging scroll type Oldham ring. The rotation of the oscillating scroll member 20 is prevented by being fitted into the ring engagement groove 22.
  • An oscillating bearing 21 to which the eccentric shaft 14 is attached is formed at the center of the side surface on the block side of the oscillating scroll member 20 so as to protrude in the axial direction.
  • a bearing space 23 is defined in the oscillating bearing 21.
  • a side surface of the swing scroll member 20 on the side of the fixed scroll member 40 protrudes toward the fixed scroll member 40 and has a As a result, a spiral scroll 24 is formed.
  • the fixed scroll member 40 is fixed to the block 15 such that the swing scroll member 20 is rotatably held between the block 15 and the block 15.
  • the compression chamber 30 is defined.
  • the compression chamber 30 moves with a gradually decreasing volume from the outer peripheral direction to the center direction in accordance with the swinging motion of the swing scroll member 20.
  • the outermost end of the compression chamber 30 is opened.
  • the suction space 31 communicates with the refrigerant suction pipe 5, and the innermost end of the compression chamber 30 communicates with the discharge hole 42 penetrating through the central portion of the fixed scroll member 40 in the axial direction. .
  • a check valve 60 is disposed in the discharge hole 42, and a check valve for holding the check valve 60 is provided on a side surface of the fixed scroll member 40 on the side of the lid 7.
  • Valve holding plate 61 is installed.
  • the check valve holding plate 61 holds and fixes a relief valve 65 that opens and closes a leak hole 64 that communicates with a discharge space 63 described below.
  • Numeral 0 gradually reduces the volume from the outer peripheral part toward the central part, expands the volume to the suction space 31 communicating with the refrigerant suction pipe 5, and sucks, compresses, and discharges the refrigerant from the refrigerant suction pipe 5. It is.
  • the block 15 is provided with an oil suction pipe 80 in which an opening 80 A formed at one end is immersed in the oil reservoir 73, and other than the oil suction pipe 80.
  • the end is communicated with an oil space 81 defined by the main bearing 17, the seal bearing 50, and the enlarged diameter portion 13 A of the rotating shaft 13.
  • the spiral space formed spirally on the outer peripheral surface of the enlarged diameter portion 13A is formed on the oil space 81.
  • it communicates with an oil guide hole 83 that penetrates the eccentric shaft 14 from the side surface of the enlarged diameter portion 13A and reaches the bearing space 23.
  • a filter 84 is attached to the opening 8 OA of the oil suction pipe 80.
  • an oil circulation return portion 90 is mounted on the side surface of the block 15 on the drive portion 3 side.
  • the oil circulation return portion 90 is provided around a discharge oil space 91 to which the discharge-side end of the spiral groove 82 communicates, and has an annular oil communication to the discharge oil space 91. It has a groove 92, and has an oil discharge pipe 93, which communicates with the oil groove 92 and is immersed in the oil reservoir 73, below. Further, the drive section 3 side of the discharge oil space 92 is sealed with a sleeve 94 via an elastic member 95.
  • a shield plate 96 for shielding between the oil suction pipe 80 and the balance weight 19 is provided on the drive section 3 side of the oil circulation return section 90.
  • the block 96 is fixed to the block 15 together with the oil circulation return section 90.
  • the oil staying in the oil reservoir 73 is moved from the oil reservoir 73 to the oil space 81 by the high pressure applied to the oil surface and the differential pressure between the suction space 31 and the pump action of the spiral groove 82.
  • the oil is sucked through the oil suction pipe 80.
  • the oil that has reached the oil space 81 is drawn into the spiral groove 82 by the pumping action of the spiral groove 82, and the expanded portion 13 A, the main bearing 17 and After lubricating the sliding part between the two, it reaches the oil discharge space 91, returns from the oil groove 92 of the oil circulation return part 90, passes through the oil discharge pipe 93, and returns to the oil reservoir 73. is there.
  • the oil that has reached the oil space 81 is drawn into the oil guide hole 83 by the pressure difference between the oil space 81 and the suction space 31, and from the bearing space 23 to the swing bearing 2. 1 and the eccentric shaft 14 are brought into contact with the sliding space by lubricating the sliding part. Lubricate the sliding part in contact with the crawler member 20, furthermore, the Oldham ring 56, the Oldham ring storage groove 54, the block-side Oldham ring engagement groove 55, and the swing Lubricate the sliding part in contact with the scroll side old dam ring engagement groove 2 2.
  • a shielding plate 96 provided between the oil suction pipe 80 and the balance plate 19 extends into the oil reservoir 73 near the lower surface of the cylindrical case 6.
  • the oil reservoir 73 is formed so as to partition the oil reservoir 73 into a compression unit-side oil reservoir 73A and a drive unit-side oil reservoir 73B, and communicate with each other through a gap having a predetermined throttling action. Things.
  • the oil in the drive unit-side oil reservoir 73B is stirred by the influence of the rotation of the normal weight 19 and the rotation of the mouth 12 of the drive unit 3.
  • the provision of the shielding plate 96 makes it possible to suppress the oil disturbance in the oil reservoir 73B on the compression section side, so that the oil surface is disturbed. It is possible to prevent poor suction of oil from the oil suction pipe 80.
  • the discharge space 63 is defined by a cover 62 fixed to the side surface of the fixed scroll member 40 on the side of the cover 7B, and an oil formed below the closed case 2 Directly shut off from oil in reservoir 73.
  • the discharge space 63 and the high-pressure space 71 are communicated with each other by a refrigerant passage 70 formed through the fixed scroll member 40 and the block 15 in the axial direction. is there. 7OA communicates between the refrigerant passage 70 and the discharge space 63. Communication groove formed in the fixed scroll member 40.
  • the high-pressure space 71 and the space (oil reservoir side space) 72 defined by the lid 7B and the cover 62 are connected by an equalizing hole 99 shown in FIG. Communicated. Below the fixed scroll member 40 and the block 15, a conduction hole 98 of an oil reservoir 73 is formed, and the oil in the oil reservoir side space 72 and the oil in the high pressure space 71 are formed. The oil is in a conductive state.
  • the oil sump space 7 2 serves as a buffer space for the oil in the high pressure space 71, and the turbulence of the oil level in the high pressure space 71 is suppressed. I can do it.
  • the pressure equalizing hole 99 is provided to connect the high pressure space 71 to the oil reservoir side space 72, and the oil is removed.
  • the oil level in the reservoir side space 72 can be ensured.
  • the oil storage space 72 is not in direct communication with the discharge hole 42, the turbulence of the oil level in the oil storage side space 72 due to the pulsating flow of the refrigerant discharge pressure is suppressed. This makes it possible to absorb the turbulence of the oil level on the oil suction pipe side.
  • a cover that pressure-blocks a discharge space communicating with a discharge hole and oil located below the discharge space is provided, and the discharge space and the high-pressure space are separated from each other.

Landscapes

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

Abstract

Un tuyau d'aspiration d'huile (80) constituant la partie latérale la plus en amont d'un passage d'huile lubrifiante est disposé au voisinage d'une pièce nécessitant une lubrification. Dans le but de réduire au minimum la turbulence d'une surface d'huile par suite d'un écoulement pulsé d'un réfrigérant évacué par un orifice d'évacuation (42), un capot (62) est prévu pour séparer une pression régnant dans un espace d'évacuation (63), lequel communique avec l'orifice d'évacuation (42), de celle régnant dans un réservoir d'huile (73). Un passage de réfrigérant (70) autorisant la communication entre l'espace d'évacuation (63) et un espace haute pression (71) est prévu et permet au réfrigérant évacué par l'espace d'évacuation (63) de s'écouler directement depuis l'orifice de décharge (42) jusqu'à l'espace haute pression (71) en passant par l'espace d'évacuation (63). Ainsi, à la différence des compresseurs à hélices classiques de ce type, la surface de l'huile sur le côté inférieur de l'espace d'évacuation (63) ne subit pas l'influence de l'écoulement pulsé du réfrigérant évacué par l'orifice d'évacuation (42), de sorte qu'il est possible de réduire au minimum la turbulence à la surface de l'huile dans laquelle est immergée un tuyau d'aspiration de réfrigérant (5) disposé dans un bloc (15).
PCT/JP1998/002406 1997-06-02 1998-06-01 Compresseur a helices horizontal WO1998055767A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9159255A JP3028473B2 (ja) 1997-06-02 1997-06-02 横置き型スクロールコンプレッサ
JP9/159255 1997-06-02

Publications (1)

Publication Number Publication Date
WO1998055767A1 true WO1998055767A1 (fr) 1998-12-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/002406 WO1998055767A1 (fr) 1997-06-02 1998-06-01 Compresseur a helices horizontal

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JP (1) JP3028473B2 (fr)
WO (1) WO1998055767A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100848939B1 (ko) * 2000-09-29 2008-07-29 누코 코포레이션 얇은 강철 스트립 및 그 제조방법

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003328965A (ja) * 2002-05-15 2003-11-19 Matsushita Electric Ind Co Ltd スクロール圧縮機
CN100343517C (zh) * 2002-12-25 2007-10-17 乐金电子(天津)电器有限公司 涡旋压缩机的静涡盘

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06346884A (ja) * 1993-06-07 1994-12-20 Matsushita Electric Ind Co Ltd 電動圧縮機
JPH09217691A (ja) * 1996-02-14 1997-08-19 Matsushita Electric Ind Co Ltd スクロール気体圧縮機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06346884A (ja) * 1993-06-07 1994-12-20 Matsushita Electric Ind Co Ltd 電動圧縮機
JPH09217691A (ja) * 1996-02-14 1997-08-19 Matsushita Electric Ind Co Ltd スクロール気体圧縮機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100848939B1 (ko) * 2000-09-29 2008-07-29 누코 코포레이션 얇은 강철 스트립 및 그 제조방법

Also Published As

Publication number Publication date
JP3028473B2 (ja) 2000-04-04
JPH10331785A (ja) 1998-12-15

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