WO2017018137A1 - Structure anti-vibratoire de corps de compresseur - Google Patents

Structure anti-vibratoire de corps de compresseur Download PDF

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Publication number
WO2017018137A1
WO2017018137A1 PCT/JP2016/069892 JP2016069892W WO2017018137A1 WO 2017018137 A1 WO2017018137 A1 WO 2017018137A1 JP 2016069892 W JP2016069892 W JP 2016069892W WO 2017018137 A1 WO2017018137 A1 WO 2017018137A1
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WO
WIPO (PCT)
Prior art keywords
compressor
rubber bush
vibration
compressor body
peripheral surface
Prior art date
Application number
PCT/JP2016/069892
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English (en)
Japanese (ja)
Inventor
巌 内門
Original Assignee
サンデン・エンバイロメントプロダクツ株式会社
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 サンデン・エンバイロメントプロダクツ株式会社 filed Critical サンデン・エンバイロメントプロダクツ株式会社
Publication of WO2017018137A1 publication Critical patent/WO2017018137A1/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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00

Definitions

  • the present invention relates to a vibration isolating structure for a compressor main body used in a compressor, and more specifically, configured to absorb (prevent) vibration of the compressor main body while supporting the compressor main body on a support portion.
  • the present invention relates to a vibration-proof structure of a compressor body in a compressor.
  • an anti-vibration structure used for a compressor for example, an anti-vibration structure described in Patent Document 1 is known.
  • the vibration-proof structure described in Patent Document 1 includes a bolt screwed to a seat frame for supporting a compressor, and a cylindrical shape that is fitted on the outer periphery of the bolt and placed on the seat frame.
  • the mounting portion is configured to be coupled to the leg of the compressor.
  • the present invention has been made paying attention to the above problems, and has a compressor body vibration-proof structure that can absorb the vibration of the compressor body well and can regulate the amount of subsidence in the vertical direction of the compressor body.
  • the purpose is to provide.
  • a vibration isolating structure for a compressor body which is used in a compressor and configured to support the compressor body on a support portion and absorb vibration of the compressor body,
  • a rubber bush interposed between the machine main body and the support portion, and a cylindrical member provided on the outer periphery of the rubber bush, and is placed on the support portion and has an axial length And the cylindrical member formed shorter than the rubber bush.
  • the rubber bush has a protrusion formed on its outer peripheral surface so as to contact the inner peripheral surface of the cylindrical member, and the outer peripheral surface of the rubber bush other than the protrusion and the inner peripheral surface of the cylindrical member A predetermined gap is provided between them.
  • the rubber bush can expand in the radial direction when the rubber bush is contracted in the axial direction, and therefore, for example, the vibration in the vertical direction of the compressor main body can be satisfactorily absorbed.
  • the amount of sinking of the compressor body (the amount of movement in the direction of the support portion) can be regulated by the compressor body coming into contact with the cylindrical member (the upper surface thereof) when the rubber bush is contracted.
  • the cylindrical member when the cylindrical member is attached, the cylindrical member can be positioned and fixed on the support portion by contact with the protrusion formed on the outer peripheral surface of the rubber bush, so that it is easy to assemble and the cylindrical member. There is no backlash of the member and the generation of abnormal noise is prevented.
  • FIG. 1 is a longitudinal sectional view of a compressor to which an embodiment of a vibration isolating structure according to the invention is applied.
  • the compressor 1 is a reciprocating compressor called a reciprocating compressor or a piston compressor, and is a hermetic compressor in which an electric motor as a drive unit is sealed in a container integrally with a compression mechanism.
  • the refrigeration cycle includes a path through which refrigerant as a working fluid of the compressor 1 circulates.
  • the refrigerant for example, a carbon dioxide refrigerant that is a nonflammable natural refrigerant is used.
  • a compressor 1 has a hermetic container 2 formed by hermetically fitting an upper shell (top shell) 2A and a lower shell (bottom shell) 2B to each other.
  • the machine body 3 is stored.
  • the compressor body 3 is supported on a plurality of (four in this embodiment) support portions 4 formed inside the lower shell 2 ⁇ / b> B via a vibration isolation mechanism 30 described later. Yes.
  • the compressor body 3 includes an electric motor 5 that is a drive unit, a compression mechanism 6 that is driven by the electric motor 5, and a frame 7 that is attached to the support unit 4 via a vibration isolation mechanism 30.
  • the electric motor 5 and the compression mechanism 6 are fixed to the frame 7.
  • the electric motor 5 includes a stator 5A that generates a magnetic field by power supply and a rotor 5B that rotates by the magnetic field generated by the stator 5A.
  • the rotor 5B is coaxially disposed inside the stator 5A, and is shrink-fitted and fixed to a main shaft portion 11A of a crankshaft 11 described later. Electric power is supplied to the stator 5A from the outside of the compressor 1 through an electrical component (not shown) fixed to the sealed container 2.
  • the compression mechanism 6 includes the crankshaft 11, the cylinder block 12, the cylinder head 13, the piston 14, the connecting rod 15 and the like described above.
  • the crankshaft 11 is composed of the main shaft portion 11A and the eccentric shaft portion 11B described above.
  • One end (large end portion) of the connecting rod 15 is rotatably connected to the eccentric shaft portion 11B, and the piston 14 is connected to the other end (small end portion) of the connecting rod 15.
  • the piston 14 is configured to reciprocate via the connecting rod 15 in conjunction with the eccentric rotation of the eccentric shaft portion 11B.
  • a cylinder bore 16 in which the piston 14 reciprocates is formed, and the cylinder head 13 is fixed by a bolt 18 with a valve plate 17 interposed therebetween so as to close the opening of the cylinder bore 16.
  • the cylinder head 13 is formed with a refrigerant suction chamber and a discharge chamber.
  • the valve plate 17 is formed with a refrigerant suction hole and a discharge hole (not shown).
  • the suction hole communicates with a suction chamber provided in the cylinder head 13 and is opened and closed by a suction valve.
  • the discharge hole communicates with a discharge chamber provided in the cylinder head 13 and is opened and closed by a discharge valve. Then, when the discharge valve is opened in the compression stroke of the piston 14, the discharge chamber and the cylinder bore 16 are communicated with each other via the discharge hole, and when the suction valve is opened in the suction process of the piston 14, the suction hole
  • One end of a suction pipe 19 and a discharge pipe 20 attached to the lower shell 2B of the sealed container 2 as shown in FIG. 2 is connected to the suction chamber and the discharge chamber provided in the cylinder head 13, respectively.
  • the frame 7 includes a pedestal portion 7A and a cylindrical portion 7B formed so as to extend upward from a substantially central portion of the pedestal portion 7A.
  • the electric motor 5 and the compression mechanism 6 are fixed to the pedestal portion 7A, and a small-diameter portion 32A of a rubber bush 32 (to be described later) of the vibration isolation mechanism 30 is provided at a plurality of locations (four locations in the present embodiment) of the peripheral portion of the pedestal portion 7A.
  • a mounting hole 7a is formed in which the outer periphery is inserted.
  • the compressor body 3 is supported and accommodated in the hermetic container 2 by attaching the frame 7 to the support portion 4 inside the lower shell 2 ⁇ / b> B via the vibration isolation mechanism 30.
  • the frame 7 corresponds to a mounting portion of the compressor body 3.
  • a bearing of the main shaft portion 11A of the crankshaft 11 is disposed on the inner peripheral surface of the cylindrical portion 7B, and a thrust trace or thrust that receives the thrust load of the rotor 5B of the electric motor 5 is disposed on the upper end surface of the cylindrical portion 7B. Bearings such as washers are arranged.
  • an oil passage 21 is formed in the crankshaft 11 from the substantially axial center position of the lower end surface of the eccentric shaft portion 11B to the middle of the main shaft portion 11A.
  • An oil pipe 22 is fitted to the lower end of the oil passage 21. Lubricating oil for lubricating the sliding portions of the electric motor 5 and the compression mechanism 6 is stored in the inner bottom portion of the lower shell (bottom shell) 2B.
  • the anti-vibration mechanism 30 includes a fixed pin 31 as a shaft portion erected on the support portion 4, and is fitted and inserted into the outer periphery of the fixed pin 31, and the pedestal portion 7 A and the support portion 4 of the frame 7 of the compressor body 3 A rubber bush 32 interposed between the rubber bush 32, a stopper collar 33 as a cylindrical member provided on the outer periphery of the rubber bush 32 and mounted on the support portion 4, and a pedestal portion 7 A fixed on the rubber bush 32. And a snap pin 34 to be configured.
  • the fixing pin 31 is formed in a cylindrical shape. As shown in FIG. 4, the fixing pin 31 has a through hole 31 a through which the snap pin 34 penetrates, and the lower side is attached to the mounting hole 4 a (shown in FIG. 2) of the support portion 4. Is erected on the support portion 4.
  • the rubber bush 32 is made of, for example, nitrile rubber (NBR), and has a stepped outer shape as shown in FIG. 5, and has a small diameter portion 32A and a diameter larger than the small diameter portion 32A. And a large diameter portion 32 ⁇ / b> B extending to the lower end portion of the rubber bush 32. As shown in FIG. 6, a central hole 32 ⁇ / b> C through which the fixing pin 31 passes (inserted) is formed at the center of the rubber bush 32. Protrusions 32a and 32b are formed in a flange shape on the outer peripheries of the small diameter portion 32A and the large diameter portion 32B, respectively. Further, the center hole 32C through which the fixing pin 31 indicated by a two-dot chain line in FIG.
  • NBR nitrile rubber
  • both end portions which are portions corresponding to the outer periphery where the flange-like projections 32a and 32b exist in the center hole 32C, have a larger diameter than the intermediate portion, that is, a shaft diameter (diameter) of the fixing pin 31.
  • the protrusions 32a and 32b formed on the outer periphery of the rubber bush 32 are formed in a flange shape.
  • the present invention is not limited to this.
  • a plurality (at least two or more) of dot-like or belt-like protrusions may be formed on the outer periphery of the rubber bush 32 at equal intervals in the circumferential direction.
  • at least the large-diameter portion 32B only needs to have a protrusion, and the small-diameter portion 32A is not necessarily provided with a protrusion.
  • the stopper collar 33 is, for example, a metal cylindrical member, and is provided on the support portion 4 so as to come into contact with the protrusion 32b on the outer periphery of the rubber bush, specifically, on the outer periphery of the large diameter portion 32B. Is done.
  • a predetermined gap L (see FIG. 3) is formed between the outer peripheral surface of the rubber bush 32 other than the protrusion 32b and the inner peripheral surface of the stopper collar 33.
  • the predetermined gap L is the amount of bulge in the radial direction of the rubber bush 32 when the rubber bush 32 contracts by receiving a load in the vertical direction (axial direction) and the lower surface of the frame 7 contacts the upper surface of the stopper collar 33. Is also a large interval.
  • the stopper collar 33 is formed such that its axial length (height) is shorter than that of the rubber bush 32. Specifically, the axial length (height) of the stopper collar 33 is shorter than the axial length (height) of the large diameter portion 32B of the rubber bush 32, and more specifically, on the support portion 4.
  • the distance H between the upper surface of the stopper collar 33 and the lower surface of the frame 7 placed on the upper surface portion of the large-diameter portion 32B of the rubber bush 32 (see FIG. 3) Is set to be smaller than the distance h (see FIG. 1) between the inner bottom of the lower shell 2B and the tip of the oil pipe 22 (H ⁇ h).
  • the stopper collar 33 has a function as a stopper that regulates the amount of movement of the compressor body 3 in the direction of the support portion 4.
  • the lower side of the fixing pin 31 is attached to the attachment hole 4a of the support portion 4.
  • a fixing pin 31 is erected on the support portion 4, and a rubber bush 32 is fitted on the fixing pin 31 to place the rubber bush 32 on the support portion 4.
  • the stopper collar 33 is provided around the large diameter portion 32 ⁇ / b> B of the rubber bush 32 and placed on the support portion 4.
  • the pedestal portion 7A of the frame 7 is attached to the rubber bush 32 by fitting the small diameter portion 32A of the rubber bush 32 into the mounting hole 7a and placing it on the upper surface of the large diameter portion 32B.
  • a snap pin 34 is inserted into 31 a and the frame 7 is fixed to the support portion 4 via the rubber bush 32.
  • the compressor main body 3 is fixed to the lower shell 2 ⁇ / b> B via the vibration isolation mechanism 30.
  • the vibration isolating structure of the present embodiment since the gap L is provided between the stopper collar 33 and the portion other than the protrusion 32b on the outer peripheral surface of the large diameter portion 32B of the rubber bush 32, the compressor body When the rubber bush 32 receives a load caused by the vibration in the vertical direction 3 and the rubber bush 32 contracts downward (shrinks in the axial direction), the rubber bush 32 can expand in the radial direction. For this reason, the vibration absorption function in the vertical direction of the compressor body 3 can be sufficiently exhibited.
  • the stopper collar 33 is fixed in contact with the protrusion 32b of the rubber bush 32, so that the stopper collar 33 is not disturbed by the vibration of the compressor main body 3. There is no risk of sound.
  • the base 7A and the stopper collar 33 of the frame 7 can be positioned by the flange-like protrusions 32a and 32b when attached to the outer periphery of the rubber bush 32.
  • the central hole 32C of the rubber bush 32 is formed such that the portion corresponding to the outer peripheral surface where the protrusions 32a and 32b exist is larger in diameter than the shaft diameter (diameter) of the fixed pin 31. Gaps 40 and 41 are respectively formed between the peripheral surface of 32C.
  • this embodiment showed the example which applied the vibration proof structure of this invention to the support structure of the compressor main body inside the container of a hermetic compressor, it is not restricted to this,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

L'invention concerne une structure anti-vibratoire de corps de compresseur qui est utilisée dans un compresseur et qui est conçue de manière à supporter un corps de compresseur sur une partie de support et de manière à absorber les vibrations du corps de compresseur, les éléments suivants étant inclus : une broche de fixation 31 qui est disposée verticalement dans une partie de support 4 dans une coque inférieure 2B ; une bague de caoutchouc 32 qui est ajustée par insertion dans la périphérie circonférentielle extérieure de la broche de fixation 31 et qui est intercalée entre la partie de support 4 et un cadre 7 du corps de compresseur ; et un collier d'arrêt cylindrique 33 qui est disposé au niveau de la périphérie circonférentielle extérieure d'une section de grand diamètre 32B de la bague en caoutchouc 32, qui est placé sur la partie de support 4, et qui est formé de sorte que la longueur dans la direction axiale du collier est plus courte que la section de grand diamètre 32B. La bague en caoutchouc 32 comprend une projection en forme de bride 32b formée au niveau de la surface circonférentielle extérieure de la section de grand diamètre 32B de manière à venir en contact avec la surface circonférentielle intérieure du collier d'arrêt 33. Un espace L est formé entre la surface circonférentielle intérieure du collier d'arrêt 33 et la surface circonférentielle extérieure, à l'exclusion de la projection 32b, de la bague en caoutchouc 32.
PCT/JP2016/069892 2015-07-28 2016-07-05 Structure anti-vibratoire de corps de compresseur WO2017018137A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-148608 2015-07-28
JP2015148608A JP2017025890A (ja) 2015-07-28 2015-07-28 圧縮機の防振構造

Publications (1)

Publication Number Publication Date
WO2017018137A1 true WO2017018137A1 (fr) 2017-02-02

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ID=57884570

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Application Number Title Priority Date Filing Date
PCT/JP2016/069892 WO2017018137A1 (fr) 2015-07-28 2016-07-05 Structure anti-vibratoire de corps de compresseur

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JP (1) JP2017025890A (fr)
WO (1) WO2017018137A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4932211U (fr) * 1972-06-20 1974-03-20
JPS5295911U (fr) * 1976-01-16 1977-07-18
JPS5472705U (fr) * 1977-11-02 1979-05-23
JPS63106937U (fr) * 1986-12-27 1988-07-11
JPH02110273U (fr) * 1989-02-20 1990-09-04
US6354558B1 (en) * 1998-11-20 2002-03-12 Carrier Corporation Compressor mounting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4932211U (fr) * 1972-06-20 1974-03-20
JPS5295911U (fr) * 1976-01-16 1977-07-18
JPS5472705U (fr) * 1977-11-02 1979-05-23
JPS63106937U (fr) * 1986-12-27 1988-07-11
JPH02110273U (fr) * 1989-02-20 1990-09-04
US6354558B1 (en) * 1998-11-20 2002-03-12 Carrier Corporation Compressor mounting

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Publication number Publication date
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