EP1956244B1 - Machine à spirale pour fluides - Google Patents

Machine à spirale pour fluides Download PDF

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Publication number
EP1956244B1
EP1956244B1 EP20080001720 EP08001720A EP1956244B1 EP 1956244 B1 EP1956244 B1 EP 1956244B1 EP 20080001720 EP20080001720 EP 20080001720 EP 08001720 A EP08001720 A EP 08001720A EP 1956244 B1 EP1956244 B1 EP 1956244B1
Authority
EP
European Patent Office
Prior art keywords
lubrication oil
rotor
body part
rotating shaft
cylindrical body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP20080001720
Other languages
German (de)
English (en)
Other versions
EP1956244A2 (fr
EP1956244A3 (fr
Inventor
Noriyuki Kobayashi
Akiyoshi Higashiyama
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.)
Sanden Corp
Original Assignee
Sanden Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanden Corp filed Critical Sanden Corp
Publication of EP1956244A2 publication Critical patent/EP1956244A2/fr
Publication of EP1956244A3 publication Critical patent/EP1956244A3/fr
Application granted granted Critical
Publication of EP1956244B1 publication Critical patent/EP1956244B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04C29/026—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
    • 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
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0085—Prime movers
    • 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
    • F04C29/028—Means for improving or restricting lubricant flow
    • 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
    • F04C2210/10—Fluid working
    • F04C2210/1027—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
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1072—Oxygen (O2)
    • 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
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • F04C2210/261—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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/045—Heating; Cooling; Heat insulation of the electric motor in hermetic pumps

Definitions

  • the present invention relates to a fluid machine, and, particularly, to a fluid machine which reserves a lubrication oil below a closed container.
  • a closed type compressor which is one example of this type of fluid machine is used in a refrigeration air conditioner or the like to compress a coolant as a working fluid.
  • This coolant normally includes a lubrication oil.
  • This lubrication oil serves to seal a slide surface in the compressor as well as lubricate the slide surface, a bearing and so forth.
  • a pipe which bypasses an electric motor and connects a scroll unit to a reservoir for lubrication oil is provided, and is laid out on the outer surface side of the electric motor.
  • Patent abstracts of Japan JP2000205157 shows a scroll compressor which reduces the oil rising quantity by dividing the space formed between a compression mechanism part and an electric motor by a demister.
  • the demister separates lubrication oil from the discharged gas.
  • the coolant gas without lubrication oil from the space on one side of the demister is carried out through a discharge pipe, and the lubrication oil is returned to the space on the other side of the demister by centrifugal force.
  • the present invention has been made in view of such a problem, and it is an object of the invention to provide a fluid machine which can be made smaller and lighter while improving the reliability of the lubrication performance with a simple mechanism.
  • a fluid machine of the present invention comprises a closed container having a cylindrical body part, a discharge chamber formed above the cylindrical body part, and a reservoir for lubrication oil, formed below the cylindrical body part, a discharge pressure acting in the cylindrical body part; a rotating shaft extending in the cylindrical body part and rotatably supported via a bearing; an electric motor that is accommodated in the cylindrical body part, drives the rotating shaft by energization thereof, and has a rotor around the rotating shaft, the rotor being rotated together with the rotating shaft, and a stator around the rotor, the stator rotating the rotor; a scroll unit that is accommodated in the cylindrical body part above the electric motor and is driven by the rotating shaft to execute a sequence of processes from intake of a working fluid to discharge thereof; a frame member that is disposed between the scroll unit and the electric motor, fixes the scroll unit and supports the rotating shaft via the bearing; and flow-direction restricting means that restricts a direction of lubrication oil flowing downward toward the electric motor
  • a lubrication oil in the reservoir is supplied to the bearing to lubricate and cool the bearing, and the flow-direction restricting means restricts the direction of the lubrication oil flowing downward toward the electric motor from the scroll unit to inhibit the flow of the lubrication oil toward the stator.
  • the flow-direction restricting means is configured to include the guide member which is fixed to the top surface of the rotor and guides the downward-flowing lubrication oil to the top surface of the rotor, and the discharge passage which causes the lubrication oil guided to the top surface of the rotor to flow to the reservoir. Accordingly, the lubrication oil is all led to the reservoir promptly without being scattered in the body part.
  • the lubrication oil can be collected efficiently, and a failure of the fluid machine originating from insufficient supply of the lubrication oil can surely be prevented with a simple mechanism having the guide member provided, thus making it possible to improve the reliability of the fluid machine.
  • the guide member is formed into a bottomed cylindrical shape having a bottom portion caulked to the top surface and an opening opened toward the frame member.
  • the guide member is formed into a bottomed cylindrical shape whose opening is opened toward the frame member and whose bottom portion is caulked to the top surface of the rotor, so that the oil circulation rate can be suppressed with a simple mechanism of having the guide member and the rotor integrally assembled, thus making it possible to achieve a smaller and lighter fluid machine and reduction of the manufacture cost thereof.
  • the fluid machine further comprises a partition mechanism that encloses the guide member to separate a working fluid discharged from the scroll unit and the downward-flowing lubrication oil in order to inhibit flow of the working fluid into the guide member.
  • this configuration has the partition mechanism that prevents flow of a working fluid into a guide member, the downward-flowing lubrication oil is prevented from coming into contact with the working fluid to be included therein, so that the oil circulation rate can be reduced surely, thus ensuring more reliable prevention of a failure of the fluid machine originating from exhaustion of the lubrication oil.
  • the discharge passage is formed penetrating the bottom portion and the rotor.
  • the downward-flowing lubrication oil is smoothly discharged to the reservoir via the discharge passage formed penetrating the bottom portion of the guide member and the rotor, making it possible to collect the lubrication oil more efficiently and prevent a failure of the fluid machine originating from exhaustion of the lubrication oil more reliably.
  • the working fluid is a coolant comprised of carbon dioxide.
  • a coolant comprised of carbon dioxide which is compressed under high pressure is used as the working fluid, so that even when the plate thickness or the like of the closed container is increased, a sufficient amount of lubrication oil can be secured without increasing the weight, thickness, length and size of the fluid machine.
  • FIG. 1 shows a closed type compressor as one example of a fluid machine according to the embodiment.
  • This compressor 1 is installed in a refrigeration air conditioner or a refrigeration circuit of a heat-pump type water heater or the like.
  • This circuit has a passage where a carbon dioxide coolant (hereinafter called coolant) which is one example of a working fluid, and the compressor 1 sucks the coolant from the passage, compresses and supplies it to the passage.
  • coolant carbon dioxide coolant
  • the compressor 1 has a housing (closed container) 2 whose body part 3 has its upper side and lower side fitted air-tightly by an upper lid 4 and a lower lid 5 respectively, and the interior of the body part 3 is sealed with a discharge pressure acting therein.
  • An electric motor (electromotor) 6 is accommodated in the body part 3, and a rotating shaft 12 is disposed in the motor 6.
  • a rotor 7 with a permanent magnet is fixed to the outer surface side of the rotating shaft 12
  • a stator 8 having an armature winding 9 is disposed on the outer surface side of the rotor 7, and an outer-surface side part of the stator 8 is securely press-fitted in the body part 3.
  • the armature winding 9 When the armature winding 9 is excited, the rotor 7 rotates with the rotation of a magnetic field generated by the armature winding 9, and rotates together with the rotating shaft 12.
  • An upper end side of the rotating shaft 12 is rotatably supported on a main shaft frame (frame member) 14 via a bearing 16.
  • the lower end side of the rotating shaft 12 is rotatably supported on a sub shaft frame 18 via a bearing 20.
  • An oil pump 22 is attached to the lower end side of the rotating shaft 12 and drains a lubrication oil in a reservoir 23 formed inward of the lower lid 5.
  • the lubrication oil is supplied to the motor 6, a scroll unit 30, etc. from the upper end of the rotating shaft 12 via a fluid passage 24 of the rotating shaft 12, and serves to lubricate individual slide portions, bearings and so forth and seal a slide surface in the compressor.
  • an inlet port 19 for the lubrication oil is formed in the frame 18 at an adequate position, and the lubrication oil supplied to the individual slide portions in the compressor 1 is reserved in the reservoir 23 via the inlet port 19 as will be described later.
  • the unit 30 is disposed in the body part 3 above the motor 6 to execute a sequence of processes of intake, compression and discharge of a coolant.
  • the unit 30 comprises a movable scroll body 52 and a fixed scroll body 32, and the movable scroll body 52 has a end plate 54 with which a scroll lap extending toward a end plate 34 of the fixed scroll body 32 is formed integral.
  • a scroll lap extending toward the end plate 54 is formed integral with the end plate 34 of the fixed scroll body 32.
  • Those scroll laps cooperate to form a pressure chamber, which moves toward the center from the radial outer peripheral side of the scroll laps according to the revolution and turning motion of the movable scroll body 52 with respect to the fixed scroll body 32, and the volume is reduced at that time.
  • a boss 66 is formed on the lower surface side of the end plate 54, and is rotatably supported on an eccentric shaft 26 via a bearing 28.
  • the eccentric shaft 26 is formed integral with the upper end side of the rotating shaft 12. Note that the rotation of the movable scroll body 52 is inhibited by a rotation inhibiting pin 68.
  • the fixed scroll body 32 is fixed to the main shaft frame 14, and the end plate 34 partitions between the compression chamber and a discharge chamber 60.
  • a discharge hole which communicates with the compression chamber is bored through the end plate 34 at an adequate position of the center portion of the fixed scroll body 32.
  • This discharge hole is opened and closed by a discharge valve 62 disposed on the anti-scroll side of the fixed scroll body 32.
  • the anti-scroll side of the fixed scroll body 32 including the discharge valve 62 is covered with a discharge head 64 which suppresses sounds at the time of opening the discharge valve 62.
  • the flow-direction restricting means 80 is configured to include a rotor cover (guide member) 82 which is fixed to a top surface 7a of the rotor 7 and guides the lubrication oil flowing downward toward the motor 6 from the unit 30, and oil discharge passages (discharge passages) 84 which cause the lubrication oil guided to the top surface 7a to flow to the reservoir 23, so that the flow direction of the lubrication oil supplied to the unit 30 and the bearings 16, 28, etc. is restricted to be collected in the reservoir 23 to prohibit the flow-in of the lubrication oil toward the stator 8.
  • a rotor cover (guide member) 82 which is fixed to a top surface 7a of the rotor 7 and guides the lubrication oil flowing downward toward the motor 6 from the unit 30, and oil discharge passages (discharge passages) 84 which cause the lubrication oil guided to the top surface 7a to flow to the reservoir 23, so that the flow direction of the lubrication oil supplied to the unit 30 and the bearings 16, 28, etc.
  • the rotor cover 82 is formed like a cup or a bottomed cylinder having a bottom portion 82a, an opening 82b and a cylinder portion 82c.
  • a shaft hole where the rotating shaft 12 is to be inserted Formed in the bottom portion 82a approximately at a center thereof are a shaft hole where the rotating shaft 12 is to be inserted, four holes which constitute parts of the oil discharge passages 84, and four holes which constitute parts of insertion holes 88 for caulking pins 86, which will be described later.
  • the rotor cover 82 surrounds the rotating shaft 12 and the bottom portion 82a is caulked to the top surface 7a by the caulking pin 86.
  • the caulking pins 86 are inserted into the insertion holes 88 penetrating the bottom portion 82a and the rotor 7 approximately in parallel to the rotating shaft 12, and are caulked, so that the rotor cover 82 is fixed to the rotor 7.
  • the opening 82b is opened toward the main shaft frame 14, and the cylinder portion 82c extends at least until it encloses the lower end of the main shaft frame 14. Further, the outside diameter of the cylinder portion 82c is set smaller than the outside diameter of the rotor 7.
  • the rotor cover 82 restricts the flow of the lubrication oil flowing downward toward the motor 6 from the unit 30 toward the interior of the rotor cover 82 while integrally rotating with the rotor 7, thereby prohibiting the flow of the lubrication oil into the stator 8.
  • four sets of insertion holes 88 and caulking pins 86 are provided, a plurality of sets thereof have only to be provided and the number of sets is not restrictive.
  • One set of the insertion holes 88 and the caulking pins 86 may be used to secure an unillustrated counter weight which adjusts the rotational balance of the rotor 7.
  • the oil discharge passages 84 are formed penetrating the bottom portion 82a and the rotor 7 approximately in parallel to the rotating shaft 12, so that the lubrication oil passing through the oil discharge passages 84 is collected in the reservoir 23 via the inlet port 19. It is preferable that a plurality of sets of oil discharge passages 84 should be provided.
  • an oil/coolant partition mechanism (partition mechanism) 90 which partitions between a passage Fo (indicated by a solid-line arrow in the diagram) for the lubrication oil flowing downward toward the motor 6 from the unit 30 and a passage Fr (indicated by a broken-line arrow in the diagram) for the coolant discharged from the motor 6 is disposed between the main shaft frame 14 and the stator 8.
  • the partition mechanism 90 is formed to have a vertical cylindrical part 90a protrusively provided on the main shaft frame 14 side, and communication holes 90b which constitute a part of the coolant passage Fr, and the lower end side of the partition mechanism 90 is fixed to the stator 8.
  • the vertical cylindrical part 90a encloses the rotor cover 82 from the stator 8 side and is fitted in the lower end side of the main shaft frame 14, so that the flow of the coolant circulating in the housing 2 through the passage Fr is prohibited from flowing into the rotor cover 82, thus separating the passage Fr from the passage Fo.
  • the communication holes 90b are a plurality of small holes bored in the outer surface side of the vertical cylindrical part 90a along the circumferential direction thereof.
  • the lower end side of a rectifying member 92 which performs rectification while separating a coolant downward passage and a coolant upward passage constituting the passage Fr is fitted over the partition mechanism 90, and the upper end side of a rectifying member 92 is fixed to the main shaft frame 14.
  • the movable scroll body 52 makes revolving motion without rotating in accordance with the rotation of the rotating shaft 12.
  • the revolving motion of the movable scroll body 52 allows the coolant taken into the body part 3 via a suction pipe 70 to be sucked into the scroll unit 30 from the outer surface side thereof.
  • the high-pressure compressed coolant reaches the discharge chamber 60 through the discharge hole, and sequentially passes through the clearance between the outer surface side of the vertical cylindrical part 90a of the partition mechanism 90 and the inner surface side of the rectifying member 92, and the communication holes 90b through an unillustrated through hole penetrating the unit 30. Then, the coolant flows downward passing through clearances in the armature winding 9 in the stator 8, flows upward in the clearance between the outer surface side of the stator 8 and the inner surface side of the housing 2, and then is fed out to the compressor 1 through a discharge pipe 72.
  • the passage Fo for the lubrication oil flowing downward toward the motor 6 after being supplied to the unit 30, the bearings 16, 28, etc. is restricted approximately in the vertical direction by the rotor cover 82 and the oil discharge passages 84, and does not cross the coolant passage Fr, so that the lubrication oil flowing downward toward the motor 6 from the unit 30 is led to the reservoir 23 through the inlet port 19.
  • the lubrication oil in the reservoir 23 is supplied to the slide portions of the unit 30 and the bearings 16, 28 via the oil pump 22 and the fluid passage 24, and serve to seal the slide surface in addition to their lubrication and cooling, and the direction of the lubrication oil flowing downward toward the motor 6 from the unit 30 is restricted by the flow-direction restricting means 80, which comprises the rotor cover 82 and the oil discharge passages 84, thus inhibiting the flow of the lubrication oil toward the stator 8. Therefore, the lubrication oil flowing downward toward the motor 6 from the unit 30 is all promptly led to the reservoir 23 and stored therein without being scattered in the body part 3.
  • the collection of the lubrication oil can be carried out efficiently, so that a failure of the compressor 1 originating from insufficient supply of the lubrication oil, e.g., a deficiency, such as burning of the slide portions and the bearings 16, 28 originating from insufficient supply of the lubrication oil, can surely be prevented while achieving further size reduction and weight reduction of the compressor 1 and reduction of the manufacture cost of the compressor 1 with a simple mechanism of having the cup-like rotor cover 82 caulked to the top surface 7a of the rotor 7, thereby improving the reliability of the compressor 1.
  • a failure of the compressor 1 originating from insufficient supply of the lubrication oil e.g., a deficiency, such as burning of the slide portions and the bearings 16, 28 originating from insufficient supply of the lubrication oil
  • the provision of the partition mechanism 90 which inhibits flow of the coolant into the rotor cover 82 prevents contact of the downward-flowing lubrication oil with the coolant to be included therein, thus making it possible to surely reduce the oil circulation rate and more surely prevent a failure of the compressor 1 originating from insufficient supply of the lubrication oil.
  • the downward-flowing lubrication oil is smoothly discharged to the reservoir 23 via the oil discharge passages 84 formed penetrating the bottom portion 82a of the rotor cover 82 and the rotor 7, making it possible to collect the lubrication oil more efficiently and prevent a failure of the fluid machine originating from insufficient supply of the lubrication oil more reliably.
  • scroll unit 30 to be used in a close type compressor is used in the embodiment, for example, other compressing mechanisms, expansion units or the like may be used as long as they execute a sequence of processes from intake of a coolant to discharge thereof in the closed type housing.
  • a carbon dioxide coolant is used as a working fluid in the embodiment, another working fluid may be used. It is to be noted however that when a carbon dioxide coolant which is compressed under high pressure is used, the plate thickness or the like of the closed container should be increased, but the use of the flow-direction restricting means 80 of the embodiment can secure a sufficient amount of lubrication oil without further increases in the weight, thickness, length and size of the compressor 1.

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

Claims (5)

  1. Machine pour fluides (1) comprenant :
    - un boîtier fermé (2) ayant un corps cylindrique (3), une chambre de sortie (60) réalisée au-dessus du corps cylindrique (3), et un réservoir (23) pour de l'huile de lubrification sous le corps cylindrique (3) ainsi qu'une sortie de pression, appliquée au corps cylindrique (3),
    - un arbre (12) passant dans le corps cylindrique (3) et monté à rotation dans un palier (16),
    - un moteur électrique (6) logé dans le corps cylindrique (3) et entraînant l'arbre (12) lorsqu'il est alimenté, ainsi qu'un rotor (7) entourant l'arbre (12), le rotor (7) tournant avec l'arbre (12), et un stator (8) entourant le rotor (7), le stator (8) entraînant le rotor (7),
    - un module à spirales (30) logé dans le corps cylindrique (3) au-dessus du moteur électrique (6) et entraîné par l'arbre (12) pour exécuter une séquence d'opérations pour prendre le fluide de travail et le refouler,
    - un support (14) placé entre le module à spirales (30) et le moteur électrique (6) portant le module à spirales (30) et recevant l'arbre (12) par le palier (16), et
    - un moyen de limitation de passage de flux (80) qui limite le sens de passage d'huile de lubrification descendant vers le moteur électrique (6), à partir du module à spirales (30) pour interdire à l'huile fournie à partir du réservoir (23) au palier (16), de couler vers le stator (8),
    caractérisée en ce que
    le moyen de limitation de sens d'écoulement (80), comporte
    - un organe de guidage (82) fixé à la surface supérieure (7a) du rotor (7) et guidant la descente de l'huile de lubrification vers la surface supérieure (7a),
    - ainsi qu'un passage de sortie (84) pour faire couler l'huile de lubrification guidée vers la surface supérieure (7a) jusqu'au réservoir (23).
  2. Machine pour fluides (1) selon la revendication 1,
    caractérisée en ce que
    l'organe de guidage (82) a une forme de cylindre muni d'un fond (82a), maté contre la surface supérieure (7a), et une ouverture (82b) en direction du support (14).
  3. Machine pour fluides (1) selon la revendication 1 ou 2,
    caractérisée en ce qu'
    elle comprend en outre un mécanisme de cloisonnement (90) qui entoure l'organe de guidage (82) pour séparer le fluide de travail sortant du module à spirales (30) et l'écoulement de l'huile de lubrification pour interdire au fluide de travail de couler dans l'organe de guidage (82).
  4. Machine pour fluides (1) selon l'une des revendications 1 à 3,
    caractérisée en ce que
    le passage de sortie (84) est réalisé de façon à pénétrer dans le fond (82a) et dans le rotor (7).
  5. Machine pour fluides (1) selon l'une des revendications 1 à 4,
    caractérisée en ce que
    le fluide de travail est un fluide réfrigérant contenant du dioxyde de carbone.
EP20080001720 2007-02-06 2008-01-30 Machine à spirale pour fluides Ceased EP1956244B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007026620A JP4799437B2 (ja) 2007-02-06 2007-02-06 流体機械

Publications (3)

Publication Number Publication Date
EP1956244A2 EP1956244A2 (fr) 2008-08-13
EP1956244A3 EP1956244A3 (fr) 2008-10-01
EP1956244B1 true EP1956244B1 (fr) 2010-02-24

Family

ID=39469520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080001720 Ceased EP1956244B1 (fr) 2007-02-06 2008-01-30 Machine à spirale pour fluides

Country Status (3)

Country Link
EP (1) EP1956244B1 (fr)
JP (1) JP4799437B2 (fr)
DE (1) DE602008000678D1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010065556A (ja) * 2008-09-09 2010-03-25 Sanden Corp 密閉型圧縮機
JP5232595B2 (ja) * 2008-10-24 2013-07-10 三菱重工業株式会社 多段圧縮機
JP4896201B2 (ja) * 2009-10-26 2012-03-14 三菱電機株式会社 燃料供給装置
JP5295088B2 (ja) * 2009-12-15 2013-09-18 三菱電機株式会社 圧縮機
JP2012255430A (ja) * 2011-02-07 2012-12-27 Panasonic Corp 圧縮機
WO2012127755A1 (fr) * 2011-03-24 2012-09-27 三洋電機株式会社 Dispositif de compression à spirale
JP2012202252A (ja) 2011-03-24 2012-10-22 Sanyo Electric Co Ltd スクロール圧縮装置
WO2012127752A1 (fr) 2011-03-24 2012-09-27 三洋電機株式会社 Gabarit de préhension de corps annulaire, et dispositif de compresseur à spirale
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JP5999922B2 (ja) * 2012-02-24 2016-09-28 三菱重工業株式会社 スクロール圧縮機
CN103967784B (zh) * 2013-01-29 2019-03-22 艾默生环境优化技术(苏州)有限公司 压缩机
KR102226456B1 (ko) 2014-08-07 2021-03-11 엘지전자 주식회사 압축기
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CN109404289B (zh) * 2017-08-16 2024-05-14 谷轮环境科技（苏州）有限公司 旋转机械
KR102309304B1 (ko) * 2019-11-05 2021-10-07 엘지전자 주식회사 압축기
KR102500686B1 (ko) 2021-03-19 2023-02-17 엘지전자 주식회사 밀폐형 압축기

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DE602008000678D1 (de) 2010-04-08
EP1956244A2 (fr) 2008-08-13
JP2008190444A (ja) 2008-08-21
EP1956244A3 (fr) 2008-10-01

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