EP3575605B1 - Compresseur hermétique - Google Patents

Compresseur hermétique Download PDF

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Publication number
EP3575605B1
EP3575605B1 EP18743943.5A EP18743943A EP3575605B1 EP 3575605 B1 EP3575605 B1 EP 3575605B1 EP 18743943 A EP18743943 A EP 18743943A EP 3575605 B1 EP3575605 B1 EP 3575605B1
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EP
European Patent Office
Prior art keywords
oil
rotation shaft
groove
plate
thrust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18743943.5A
Other languages
German (de)
English (en)
Other versions
EP3575605A1 (fr
EP3575605A4 (fr
Inventor
Tsutomu Kon
Satoshi Iitsuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
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.)
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Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of EP3575605A1 publication Critical patent/EP3575605A1/fr
Publication of EP3575605A4 publication Critical patent/EP3575605A4/fr
Application granted granted Critical
Publication of EP3575605B1 publication Critical patent/EP3575605B1/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
    • F04C29/023—Lubricant distribution through a hollow driving shaft
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • 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
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/025—Lubrication; Lubricant separation using a lubricant pump

Definitions

  • the present invention relates to a hermetic compressor used for an air conditioner, a hot water supplying system and a freezing machine such as a refrigerator.
  • a hermetic compressor is used in a freezing machine and an air conditioner.
  • the hermetic compressor sucks gas refrigerant evaporated by an evaporator, compresses the gas refrigerant up to pressure required for condensing the gas refrigerant by a condenser, and sends out the high temperature and high pressure gas refrigerant into a refrigerant circuit.
  • a compressing mechanism for compressing refrigerant and an electric mechanism for driving the compressing mechanism by a rotation shaft are placed in a hermetic container, and an oil storage section for storing lubricant oil therein is formed in a bottom of the hermetic container.
  • An upper portion of the rotation shaft is supported by a main bearing and a lower portion of the rotation shaft is supported by an auxiliary bearing.
  • a rotation shaft oil support hole extending from a lower end to an upper end of the rotation shaft is formed in the rotation shaft.
  • the lower end of the rotation shaft includes an oil groove and a lateral hole through which the rotation shaft oil support hole and the oil groove are in communication with each other.
  • lubricant oil stored in the bottom of the hermetic container is guided to the main bearing and the auxiliary bearing through the rotation shaft oil support hole.
  • patent document 1 discloses such a configuration that a through hole is formed in a pump cover and lubricant oil which lubricates the auxiliary bearing is returned to an oil storage section
  • patent document 2 discloses such a configuration that a through hole is formed in a thrust plate and lubricant oil which lubricates the auxiliary bearing is returned to an oil storage section.
  • a first aspect of the present invention provides a hermetic compressor in which a compressing mechanism for compressing refrigerant, and an electric mechanism for driving the compressing mechanism by a rotation shaft are placed in a hermetic container, an oil storage section for storing lubricant oil is formed in a bottom of the hermetic container, the hermetic compressor includes; a main bearing for supporting an upper portion of the rotation shaft, an auxiliary bearing for supporting a lower end of the rotation shaft, a sliding bearing placed between the auxiliary bearing and the rotation shaft, a thrust-receiving plate placed below the auxiliary bearing and receiving a thrust force of the rotation shaft, an oil pump housing placed below the thrust-receiving plate, and a displacement oil pump stored in a lower surface of the oil pump housing, wherein a rotation shaft oil support hole extending from the lower end of the rotation shaft to the upper portion of the rotation shaft is formed in the rotation shaft, the lower end of the rotation shaft is provided with an oil groove formed by notching the rotation shaft in its axial direction, and a lateral
  • an oil storing space for storing the lubricant oil discharged from the oil pump is formed in a center of the thrust-receiving plate, the plate-side oil passage is brought into communication with the oil storing space, and the plate-side oil passage is formed by extending the same from the oil storing space in its radial direction.
  • the housing-side oil passage is composed of an inner groove and an outer groove formed in an upper surface of the oil pump housing, and a discharge hole formed in an outer end of the outer groove, the inner groove and the plate-side oil passage are superposed on each other and brought into communication with each other, and the outer groove is covered with the thrust-receiving plate.
  • the outer groove covered with the thrust-receiving plate has a cross-section area which is equal to or smaller than the lateral hole.
  • the discharge hole is formed such that it penetrates the upper and lower surfaces of the oil pump housing.
  • lubricant oil from being discharged to an upper portion of an auxiliary bearing by bringing an upper portion of a sliding bearing and a rotation shaft into abutment against each other at a location higher than an oil groove, and by discharging, to a location lower than the auxiliary bearing, lubricant oil supplied from a lateral hole.
  • a rotation shaft oil support hole extending from the lower end of the rotation shaft to the upper portion of the rotation shaft is formed in the rotation shaft, the lower end of the rotation shaft is provided with an oil groove formed by notching the rotation shaft in its axial direction, and a lateral hole through which the rotation shaft oil support hole and the oil groove are in communication with each other, a plate-side oil passage which is intermittently brought into communication with the oil groove is formed in the thrust-receiving plate, a housing-side oil passage which is in communication with the plate-side oil passage is formed in the oil pump housing, at a location higher than the oil groove, the lubricant oil supplied from the lateral hole moves downward in the oil groove by bringing the upper portion of the sliding bearing and the rotation shaft into abutment against each other, and the lubricant oil in the oil groove is discharged below the auxiliary bearing through the plate-side oil passage and the housing-side oil passage.
  • the upper portion of the sliding bearing and the rotation shaft are brought into abutment against each other at a location higher than the oil groove, and lubricant oil supplied from the lateral hole is discharged to a location lower than the auxiliary bearing. Therefore, it is possible to prevent the lubricant oil from being discharged to the upper portion of the auxiliary bearing. Hence, it is possible to prevent lubricant oil from being scattered from the upper portion of the auxiliary bearing and thus, it is possible to reduce the amount of lubricant oil discharged outside from the hermetic container.
  • an oil storing space for storing the lubricant oil discharged from the oil pump is formed in a center of the thrust-receiving plate, the plate-side oil passage is brought into communication with the oil storing space, and the plate-side oil passage is formed by extending the same from the oil storing space in its radial direction.
  • lubricant oil which directly flows into the thrust-receiving plate from the oil pump through a space between an outer periphery of a lower end of the rotation shaft and a center hole of the oil pump housing is also guided to a plate-side oil passage.
  • the housing-side oil passage is composed of an inner groove and an outer groove formed in an upper surface of the oil pump housing, and a discharge hole formed in an outer end of the outer groove, the inner groove and the plate-side oil passage are superposed on each other and brought into communication with each other, and the outer groove is covered with the thrust-receiving plate. According to the third aspect, it is easy to discharge impurities mixed into an oil storing space, and a discharge amount of lubricant oil can be adjusted by a depth and a groove width of the outer groove covered with the thrust-receiving plate.
  • the outer groove covered with the thrust-receiving plate has a cross-section area which is equal to or smaller than the lateral hole. According to the fourth aspect, lubricant oil supplied from the lateral hole can appropriately be held by the auxiliary bearing or the thrust-receiving plate.
  • the discharge hole is formed such that it penetrates the upper and lower surfaces of the oil pump housing. According to the fifth aspect, since the discharge amount of lubricant oil can be adjusted by the outer groove, it is unnecessary to maintain size precision of the discharge hole, and it is easy to discharge lubricant oil.
  • Fig. 1 is a vertical sectional view of a hermetic compressor according to the embodiment.
  • a compressing mechanism 10 for compressing refrigerant and an electric mechanism 20 for driving the compressing mechanism 10 are placed in a hermetic container 1.
  • the hermetic container 1 is composed of a cylindrical torso 1a extending along a vertical direction, an upper lid 1c for closing an upper opening of the torso 1a, and a lower lid 1b for closing a lower opening of the torso 1a.
  • the hermetic container 1 is provided with a refrigerant suction pipe 2 for introducing refrigerant into the compressing mechanism 10, and a refrigerant discharge pipe 3 for discharging refrigerant compressed by the compressing mechanism 10 to a location outside the hermetic container 1.
  • the compressing mechanism 10 includes a fixed scroll 11 and an orbiting scroll 12.
  • a rotation shaft 13 drives the orbiting scroll 12 in an orbiting manner.
  • the electric mechanism 20 includes a stator 21 fixed to the hermetic container 1 and a rotor 22 placed on an inner side of the stator 21.
  • the rotation shaft 13 is fixed to the rotor 22.
  • An eccentric shaft 13a which is decentered eccentrically with respect to the rotation shaft 13 is formed on an upper end of the rotation shaft 13.
  • a main bearing 30 for supporting the fixed scroll 11 and the orbiting scroll 12 is provided below the fixed scroll 11 and the orbiting scroll 12.
  • a bearing 31 for pivotally supporting the rotation shaft 13 and a boss storing section 32 are formed on the main bearing 30.
  • the main bearing 30 is fixed to the hermetic container 1 by welding or shrinkage fitting.
  • the fixed scroll 11 includes a disk-like fixed scroll mirror plate 11a, a fixed spiral lap 11b standing on the fixed scroll mirror plate 11a, and an outer peripheral wall 11c standing such that it surrounds a periphery of the fixed spiral lap 11b.
  • a discharge port 14 is formed in a substantially center portion of the fixed scroll mirror plate 11a.
  • the orbiting scroll 12 includes a disk-like orbiting scroll mirror plate 12a, an orbiting spiral lap 12b standing on a lap-side end surface of the orbiting scroll mirror plate 12a, and a cylindrical boss portion 12c formed on an end surface of the orbiting scroll mirror plate 12a on an opposite side from the lap side.
  • the fixed spiral lap 11b of the fixed scroll 11 and the orbiting spiral lap 12b of the orbiting scroll 12 mesh with each other, and a plurality of compression chambers 15 are formed between the fixed spiral lap 11b and the orbiting spiral lap 12b.
  • the boss portion 12c is formed at a substantially central portion of the orbiting scroll mirror plate 12a.
  • the eccentric shaft 13a is inserted into the boss portion 12c, and the boss portion 12c is stored in the boss storing section 32.
  • the fixed scroll 11 is fixed to the main bearing 30 at the outer peripheral wall 11c through a plurality of bolts 16.
  • the orbiting scroll 12 is supported on the fixed scroll 11 through a rotation restraining member 17 such as an Oldham ring.
  • the rotation restraining member 17 which restrains rotation of the orbiting scroll 12 is provided between the fixed scroll 11 and the main bearing 30. According to this, the orbiting scroll 12 orbits without rotating with respect to the fixed scroll 11.
  • a lower end 13b of the rotation shaft 13 is pivotally supported by an auxiliary bearing 18 placed on a lower portion of the hermetic container 1.
  • An oil storage section 4 for storing lubricant oil is formed in a bottom portion of the hermetic container 1.
  • a lower end of the rotation shaft 13 is provided with a displacement oil pump 5.
  • the oil pump 5 is placed such that its suction port exists in the oil storage section 4.
  • the oil pump 5 is driven by the rotation shaft 13.
  • the oil pump 5 can reliably pump up lubricant oil existing in the oil storage section 4 provided in a bottom of the hermetic container 1 irrespectively of pressure condition or operation speed, and fear of shortage of oil is resolved.
  • Lubricant oil pumped up by the oil pump 5 is supplied into a bearing of the auxiliary bearing 18, the bearing 31 and the boss portion 12c through the rotation shaft oil support hole 13c formed in the rotation shaft 13.
  • Refrigerant sucked from the refrigerant suction pipe 2 is guided from the suction port 15a into the compression chambers 15.
  • the compression chambers 15 move while reducing their volumes from an outer peripheral side toward a central portion, refrigerant whose pressure reaches a predetermined value in the compression chambers 15 is discharged from a discharge port 14 provided in a central portion of the fixed scroll 11 into the discharge chamber 6.
  • the discharge port 14 is provided with a discharge reed valve (not shown). The refrigerant whose pressure reaches a predetermined value in the compression chamber 15 pushes and opens the discharge reed valve and is discharged into the discharge chamber 6.
  • the refrigerant which is discharged into the discharge chamber 6 is derived into an upper portion in the hermetic container 1, the refrigerant passes through a refrigerant passage (not shown) formed in the compressing mechanism 10, reaches a periphery of the electric mechanism 20, and is discharged from the refrigerant discharge pipe 3.
  • Fig. 2 is an enlarged sectional view of essential portions of the compressing mechanism shown in Fig. 1
  • Fig. 3(a) is a plane view of a thrust-receiving plate used for the hermetic compressor
  • Fig. 3(b) is a plane view of an oil pump housing used for the hermetic compressor.
  • a sliding bearing 13e is placed between the auxiliary bearing 18 and the lower end 13b of the rotation shaft 13.
  • the lower end 13b of the rotation shaft 13 is provided with an oil groove 13f formed by notching the rotation shaft 13 in an axial direction of the rotation shaft 13, and a lateral hole 13g through which the rotation shaft oil support hole 13c and the oil groove 13f are in into communication with each other.
  • a thrust-receiving plate 40 is placed below the auxiliary bearing 18, and receives a thrust force of the rotation shaft 13.
  • An oil pump housing 50 is placed below the thrust-receiving plate 40. The oil pump 5 is stored in a lower surface of the oil pump housing 50.
  • An oil storing space 41 for storing lubricant oil discharged from the oil pump 5, and a plate-side oil passage 42 which is in communication with the oil groove 13f are formed in the thrust-receiving plate 40.
  • the plate-side oil passage 42 extends more outward than an outer diameter of the lower end 13b.
  • the oil storing space 41 is formed at a center of the thrust-receiving plate 40.
  • the plate-side oil passage 42 is in communication with the oil storing space 41, and extends in a radial direction from the oil storing space 41.
  • An outer groove 51b covered with the thrust-receiving plate 40 has a cross-section area which is equal to or smaller than the lateral hole 13g.
  • a housing-side oil passage 51 which is in communication with the plate-side oil passage 42 is formed in the oil pump housing 50.
  • the housing-side oil passage 51 is composed of an inner groove 51a and the outer groove 51b formed in an upper surface of the oil pump housing 50, and a discharge hole 51c formed in an outer end of the outer groove 51b.
  • the inner groove 51a is superposed and placed on the plate-side oil passage 42. Therefore, the inner groove 51a and the plate-side oil passage 42 are in communication with each other.
  • the outer groove 51b is covered with the thrust-receiving plate 40.
  • the discharge hole 51c penetrates upper and lower surfaces of the oil pump housing 50. The discharge hole 51c may be formed such that the outer end of the outer groove 51b extends toward the outer periphery of the oil pump housing 50.
  • Lubricant oil discharged from the oil pump 5 is supplied to the rotation shaft oil support hole 13c from a lower surface of the lower end 13b, and lubricant oil also flows into the plate-side oil passage 42 from between the outer periphery of the lower end 13b and a center hole of the oil pump housing 50.
  • lubricant oil in the oil groove 13f is prevented from being scattered from an upper portion of the auxiliary bearing 18 by abutting an upper portion of the sliding bearing 13e and the lower end 13b of the rotation shaft 13 against each other.
  • Lubricant oil supplied from the lateral hole 13g moves downward in the oil groove 13f.
  • Lubricant oil existing in the oil groove 13f is discharge to a location below the auxiliary bearing 18 through the plate-side oil passage 42 and the housing-side oil passage 51.
  • lubricant oil supplied from the lateral hole 13g is discharged to a location below the auxiliary bearing 18, it is possible to prevent lubricant oil from being discharged to the upper portion of the auxiliary bearing 18. Therefore, since it is possible to prevent lubricant oil from being scattered from the upper portion of the auxiliary bearing 18, it is possible to reduce the amount of lubricant oil discharged outside from the hermetic container 1.
  • lubricant oil which flows, from the oil pump 5, directly into the thrust-receiving plate 40 through a space between the outer periphery of the lower end 13b and the center hole of the oil pump housing 50 is also guided to the plate-side oil passage 42.
  • lubricant oil supplied from the lateral hole 13g can appropriately be held by the auxiliary bearing 18 and the thrust-receiving plate 40.
  • the discharge amount of lubricant oil can be adjusted by the outer groove 51b, it is unnecessary to maintain size precision of the discharge hole 51c, and it is easy to discharge lubricant oil.
  • refrigerant of the present invention it is possible to use R32, carbon dioxide, and refrigerant having carbon-carbon double bond.
  • the hermetic compressor of the present invention is useful for a refrigeration cycle device of a hot water heater, an air conditioner, a hot water supplying system, a freezing machine and the like.

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

Claims (5)

  1. Compresseur hermétique dans lequel un mécanisme de compression (10) pour comprimer un fluide frigorigène et un mécanisme électrique (20) pour entraîner le mécanisme de compression (10) par un arbre de rotation (13) sont placés dans un récipient hermétique (1),
    une section de stockage d'huile (4) pour stocker de l'huile lubrifiante est formée dans un fond du récipient hermétique (1),
    le compresseur hermétique comprenant :
    un palier principal (30) pour supporter une partie supérieure de l'arbre de rotation (13),
    un palier auxiliaire (18) pour supporter une extrémité inférieure (13b) de l'arbre de rotation (13),
    une plaque de réception de poussée (40) placée sous le palier auxiliaire (18) et recevant une force de poussée de l'arbre de rotation (13),
    un carter de pompe à huile (50) placé sous la plaque de réception de poussée (40),
    une pompe à huile de déplacement (5) logée dans une surface inférieure du carter de pompe à huile (50) et
    un trou de support d'huile (13c) d'arbre de rotation formé dans l'arbre de rotation (13) s'étendant depuis l'extrémité inférieure (13b) de l'arbre de rotation (13) à la partie supérieure de l'arbre de rotation (13),
    caractérisé en
    ce qu'un palier lisse (13e) est placé entre le palier auxiliaire (18) et l'arbre de rotation (13) et
    ce que l'extrémité inférieure (13b) de l'arbre de rotation (13) est pourvue d'une rainure d'huile (13f) formée par encochage de l'arbre de rotation (13) dans sa direction axiale et d'un trou latéral (13g) à travers lequel le trou de support d'huile (13c) d'arbre de rotation et la rainure d'huile (13f) sont en communication l'un avec l'autre,
    un passage d'huile côté plaque (42) qui est amené par intermittence en communication avec la rainure d'huile (13f) étant formé dans la plaque de réception de poussée (40),
    un passage d'huile côté carter (51) qui est en communication avec le passage d'huile côté plaque (42) étant formé dans le carter de pompe à huile (50),
    l'huile lubrifiante fournie à partir du trou latéral (13g) se déplaçant en un emplacement plus élevé que celui de la rainure d'huile (13f) vers le bas dans la rainure d'huile (13f) par le fait d'amener une partie supérieure du palier lisse (13e) et l'arbre de rotation (13) en butée l'une contre l'autre et
    l'huile lubrifiante dans la rainure d'huile (13f) étant évacuée sous le palier auxiliaire (18) à travers le passage d'huile côté plaque (42) et le passage d'huile côté carter (51).
  2. Compresseur hermétique selon la revendication 1, un espace de stockage d'huile (41) pour stocker l'huile lubrifiante évacuée de la pompe à huile (5) étant formé au centre de la plaque de réception de poussée (40),
    le passage d'huile côté plaque (42) étant amené en communication avec l'espace de stockage d'huile (41) et
    le passage d'huile côté plaque (42) étant formé par son extension à partir de l'espace de stockage d'huile (41) dans sa direction radiale.
  3. Compresseur hermétique selon la revendication 2,
    le passage d'huile côté carter (51) étant composé d'une rainure interne (51a) et d'une rainure externe (51b) formées dans une surface supérieure du carter de pompe à huile (50) et d'un trou d'évacuation (51c) formé dans une extrémité externe de la rainure externe (51b),
    la rainure interne (51a) et le passage d'huile côté plaque (42) étant superposés l'un sur l'autre et amenés en communication l'un avec l'autre et
    la rainure externe (51b) étant recouverte par la plaque de réception de poussée (40).
  4. Compresseur hermétique selon la revendication 3,
    la rainure externe (51b) recouverte par la plaque de réception de poussée (40) présentant une section transversale qui est égale ou inférieure au trou latéral (13g).
  5. Compresseur hermétique selon la revendication 3 ou 4,
    le trou d'évacuation (51c) étant formé de telle sorte qu'il pénètre dans la surface supérieure et la surface inférieure du carter de pompe à huile (50).
EP18743943.5A 2017-01-27 2018-01-17 Compresseur hermétique Active EP3575605B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017012607A JP6748874B2 (ja) 2017-01-27 2017-01-27 密閉型圧縮機
PCT/JP2018/001200 WO2018139308A1 (fr) 2017-01-27 2018-01-17 Compresseur hermétique

Publications (3)

Publication Number Publication Date
EP3575605A1 EP3575605A1 (fr) 2019-12-04
EP3575605A4 EP3575605A4 (fr) 2020-01-08
EP3575605B1 true EP3575605B1 (fr) 2021-10-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18743943.5A Active EP3575605B1 (fr) 2017-01-27 2018-01-17 Compresseur hermétique

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EP (1) EP3575605B1 (fr)
JP (1) JP6748874B2 (fr)
CN (1) CN110226041B (fr)
WO (1) WO2018139308A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102140323B1 (ko) * 2018-08-28 2020-07-31 영신정공 주식회사 전동 오일 펌프
WO2020183605A1 (fr) * 2019-03-12 2020-09-17 日立ジョンソンコントロールズ空調株式会社 Compresseur et dispositif à cycle de réfrigération

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EP3575605A1 (fr) 2019-12-04
CN110226041B (zh) 2021-08-10
JP6748874B2 (ja) 2020-09-02
JP2018119503A (ja) 2018-08-02
EP3575605A4 (fr) 2020-01-08
CN110226041A (zh) 2019-09-10

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