CN102725527A - Fluid machinery - Google Patents

Fluid machinery Download PDF

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Publication number
CN102725527A
CN102725527A CN2011800074442A CN201180007444A CN102725527A CN 102725527 A CN102725527 A CN 102725527A CN 2011800074442 A CN2011800074442 A CN 2011800074442A CN 201180007444 A CN201180007444 A CN 201180007444A CN 102725527 A CN102725527 A CN 102725527A
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CN
China
Prior art keywords
oil
fluid machinery
lubricant oil
seal container
accumulates
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.)
Pending
Application number
CN2011800074442A
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Chinese (zh)
Inventor
小林宪幸
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Sanden Corp
Original Assignee
Sanden Corp
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Filing date
Publication date
Application filed by Sanden Corp filed Critical Sanden Corp
Publication of CN102725527A publication Critical patent/CN102725527A/en
Pending legal-status Critical Current

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    • 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
    • F04B39/02—Lubrication
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • 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
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • 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
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • F04B39/0238—Hermetic compressors with oil distribution channels
    • F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
    • F04B39/0253—Hermetic compressors with oil distribution channels in the rotating shaft using centrifugal force for transporting the oil
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • 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
    • F04C29/02—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
    • 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
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • 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
    • F04C2240/80—Other components
    • F04C2240/809—Lubricant sump

Landscapes

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

Abstract

Provided is fluid machinery with improved lubrication performance and reliability. Fluid machinery (1) has a drive unit (4) and a driven unit (6) to which the drive force of the drive unit is transmitted via a rotating shaft (14), both being housed within a sealed container (2). The fluid machinery is provided with: an oil reservoir (76) in which lubricant is stored, on the inner bottom surface (2a) of the sealed container; and lubricating mechanisms (70, 72) which feed lubricant in the oil reservoir to the sliding parts of the drive unit and the driven unit by rotating in an integrated manner with a rotating shaft. The sealed container has a blocking part (90) on the inner sidewall (80d) thereof, which blocks the flow of lubricant in the peripheral direction on the inner sidewall.

Description

Fluid machinery
Technical field
The present invention relates to a kind of fluid machinery, in detail, relate to a kind of fluid machinery of the enclosed reciprocating motion compressor that is preferred for carbon dioxide coolant is compressed.
In this fluid machinery; Known have a kind ofly accumulate the hermetic type compressor that portion and suction pipe constitute by seal container, electronic compressing member, oil; Wherein, above-mentioned electronic compression key element is made up of the compressing member that is contained in seal container (drived unit) and electric element (driver element), and the above-mentioned oil portion of accumulating is located at compressing member; One end of above-mentioned suction pipe is connected with compressing member, and the other end is opening (for example with reference to patent documentation 1) near lubricant oil accumulates the place.
The existing technology document
Patent documentation
Patent documentation 1: japanese patent laid-open 6-294380 communique
Summary of the invention
Invent technical problem to be solved
In above-mentioned existing technology; Immerse the lubricant oil that lodges in the seal container inner bottom part owing to constitute an end of the crankshaft (rotating shaft) of compressing member; And driven by electric element, therefore can utilize the oil feeding mechanism of being located in the crankshaft to draw lubricant oil, carry out fuel feeding with slide part towards compressing member.
At this, owing to being driven by electric element, rotates oil feeding mechanism, and therefore, oil accumulates the lubricant oil of portion when being drawn, because of the rotation of oil feeding mechanism is dispersed in seal container with being parabolic shape.In addition, lubricant oil is released in the seal container by the crankshaft from rotation, and the lubricant oil that discharges is parabolic shape ground and disperses in seal container.
The lubricant oil that in seal container, disperses like this can be attached to the madial wall of seal container, and flows with the mode that upwards rotates in the week at seal container along madial wall.The initial velocity that disperses of lubricant oil is bigger, the viscous force of lubricant oil is big more, and it is just long more that then lubricant oil runs underneath to the needed time that oil accumulates till the portion after dispersing.
Particularly, the rotating speed rotation about also making crankshaft and oil pipe with 3000rpm sometimes according to the specification of compressor 1, the initial velocity that disperses of the lubricant oil under this situation is bigger.
In addition, at hermetic type compressor, particularly in its working fluid, use under the situation of hermetic type compressor of carbon dioxide coolant, use with existing article morely and compare the bigger refrigerating machine oil of viscous force, therefore, have the elongated tendency of above-mentioned needed time.In addition; Be small-sized and lodge in maximum lubricants capacity that oil accumulates portion at compressor for example under a spot of situation in the 200cc left and right sides; If needed time is longer; Then lodging in the lubricants capacity that oil accumulates portion can temporarily significantly reduce, and under the worst situation, the oil reserve that can cause oil to accumulate portion temporarily is zero state.
In this state, oil feeding mechanism idle running and can not working can not be towards each slide part of driver element and drived unit fuel feeding rightly, thereby the greasy property that can produce compressor significantly reduces such problem.
The present invention In view of the foregoing does, and its purpose is to provide a kind of fluid machinery that can improve greasy property and can improve reliability.
The technological scheme that the technical solution problem is adopted
To achieve these goals; Fluid machinery of the present invention contains driver element and the drived unit of the driving force of driver element is arranged through the rotating shaft transmission in seal container; It is characterized in that, comprising: oil accumulates portion, and this oil accumulates portion and accumulates lubricant oil at the inner bottom part of seal container; And oil feeding mechanism; This oil feeding mechanism is supplied to each slide part of driver element and drived unit through the lubricant oil that oil is accumulated portion with rotating shaft one rotation, and seal container has the mobile resistive portion that hinders (technological scheme one) to the lubricant oil that makes progress in week of madial wall on the sidewall within it.
Particularly, resistive portion is accumulated the side-prominent setting of portion (technological scheme two) towards oil on madial wall.
In addition, this fluid machinery comprises the framework that driver element and drived unit are supported, and frame fixation is in resistive portion (technological scheme three).
In addition, seal container comprises that by the drain pan of forging and molding resistive portion is shaped (technological scheme four) together when the drain pan forging and molding, in addition, and the oil portion that accumulates when the drain pan forging and molding, be shaped together (technological scheme five).
In addition, resistive portion is towards oil and accumulates the outstanding continuously waveform (technological scheme six) of portion's side, in addition, is provided with a plurality of resistive portion (technological scheme seven).
In addition, effect has the pressure of the working fluid that is inhaled into drived unit and discharges from drived unit in seal container, and working fluid is carbon dioxide coolant (technological scheme eight).
The effect of invention
The fluid machinery of being put down in writing according to technological scheme one and technological scheme two of the present invention; Owing to have resistive portion; Therefore; Even if lubricant oil that in seal container, disperses and resistive portion direct collision or not with the situation of resistive portion direct collision under because lubricant oil is attached to madial wall and when madial wall begins to rotate, can crossing resistive portion, thereby it is slowed down significantly.Because the lubricant oil that slows down does not continue to rotate along madial wall, accumulates portion but run underneath to oil immediately, therefore, can shorten significantly that lubricant oil runs underneath to dispersing after that oil accumulates portion and the needed time of quilt till accumulating.Therefore, even if be under a spot of situation with the maximum oil reserve that runs up, the viscous force of lubricant oil is big and oil accumulates portion, also can improve the cycle efficiency of lubricant oil, and can improve the greasy property of fluid machinery at fluid machinery.
The invention of being put down in writing according to technological scheme three, through with frame fixation in resistive portion, can be with resistive portion with acting on the pedestal part of frame fixation in seal container; Therefore; Need not to establish in addition the position, establish member in addition, just can be with frame fixation in seal container, thus can improve the productivity of fluid machinery.
Invention according to technological scheme four is put down in writing because resistive portion is shaped together, therefore, need not other member, other processing when the drain pan forging and molding, just can easily form resistive portion, thereby can improve the productivity of fluid machinery.
Invention according to technological scheme five is put down in writing because the oil portion that accumulates is shaped together, therefore, need not other member, other processing when the drain pan forging and molding, just can easily form oil and accumulate portion, thereby can improve the productivity of fluid machinery.
The invention of being put down in writing according to technological scheme six; Because resistive portion is towards oil and accumulates the continuously outstanding waveform of portion's side, therefore, be that one situation is compared with resistive portion outstanding; It is big that the probability of lubricant oil that disperses and resistive portion direct collision becomes; Perhaps, even if lubricant oil not with the situation of resistive portion direct collision under, the number of times that lubricant oil is attached to madial wall and when madial wall begins to rotate, crosses resistive portion also can increase.Therefore; Lubricant oil is slowed down; And can shorten further that lubricant oil runs underneath to that oil accumulates portion after dispersing and by the needed time till accumulating, therefore, even if be under a spot of situation with the maximum oil reserve that runs up, the viscous force of lubricant oil is big and oil accumulates portion making fluid machinery; Also the cycle efficiency of lubricant oil can be further improved, and the greasy property of fluid machinery can be improved.
The invention of being put down in writing according to technological scheme seven; Owing to be provided with a plurality of resistive portion, therefore, be that one situation is compared with resistive portion; It is big that the probability of lubricant oil that disperses and resistive portion direct collision becomes; Perhaps, even if lubricant oil not with the situation of resistive portion direct collision under, the number of times that lubricant oil is attached to madial wall and when madial wall begins to rotate, crosses resistive portion also can increase.Therefore; Lubricant oil is slowed down; And can shorten further that lubricant oil runs underneath to that oil accumulates portion after dispersing and by the needed time till accumulating, therefore, even if be under a spot of situation with the maximum oil reserve that runs up, the viscous force of lubricant oil is big and oil accumulates portion making fluid machinery; Also the cycle efficiency of lubricant oil can be further improved, and the greasy property of fluid machinery can be improved.
The invention of being put down in writing according to technological scheme eight; When working fluid is made as carbon dioxide coolant; The pressure of the working fluid of discharging from drived unit arrives supercritical state and is in high pressure, and the fluid machinery temperature inside is in high temperature, therefore; Use the higher lubricant oil of viscosity, the viscosity when preventing because of high temperature reduces the oil film that produces and ftractures.Yet, be under the situation of low temperature in the fluid machinery temperature inside, the viscosity of lubricant oil is bigger, and therefore, there is the tendency that is difficult for returning in the lubricant oil that disperses.But, according to said structure,, also can improve the cycle efficiency of lubricant oil, and can improve the greasy property of fluid machinery even if there is the tendency that is difficult for returning in the viscosity of lubricant oil lubricant oil big, that disperse, this point is comparatively desirable.
Description of drawings
Fig. 1 is the longitudinal section of first embodiment's compressor.
Fig. 2 is the major component enlarged view of the compressing mechanism of Fig. 1.
Fig. 3 is the outline drawing of seal container of the compressor of presentation graphs 1.
Fig. 4 is a stereogram of observing the drain pan of Fig. 3 from the top.
Fig. 5 is the plan view of the stream of the lubricant oil from the drain pan of top presentation graphs 4.
Embodiment
Fig. 1～Fig. 5 shows the compressor 1 as first embodiment's fluid machinery.
Compressor 1 is the reciprocating compressor of closed type, and in detail, it is ranged the positive displacement compressor that is called reciprocal compressor or piston compressor, for example is used as the constitution equipment that is assembled in the not shown refrigeration cycle in the vending machine.
Refrigeration cycle comprises the path that is made for to the refrigerant cycle of the working fluid of compressor 1, and in refrigeration agent, for example using, the natural refrigeration agent of incombustibility is a carbon dioxide coolant.
As shown in Figure 1, compressor 1 comprises seal container 2, in seal container 2, contains the compressing mechanism (drived unit) 6 of the driving force of motor (driver element) 4, transmission motor 4.
Motor 4 by the stator 8 that produces magnetic field through power supply, utilize the magnetic field that stator 8 produced and rotor rotated 10 constitutes; Rotor 10 be disposed at the inboard of stator 8 and with stator 8 be disposed at coaxial on, and state the main shaft part 24 of crankshaft 14 after being fixed in through hot pressing is chimeric.Outside compressor 1, stator 8 is supplied power via electric parts portion 12 of being fixed in seal container 2 and not shown lead.
Compressing mechanism 6 is made up of crankshaft 14, cylinder body 16, piston 18, connecting rod 20 etc., and crankshaft 14 is made up of eccentric axial portion 22 and main shaft part 24.
As shown in Figure 2, in cylinder body 16, formed cylinder thorax 26, and utilize bolt from cylinder body 16 sides push successively fixed cylinder pad 28, after state suction valve 50, valve plate 30, cylinder cover gasket 32 and cylinder head 34, with the opening of closed cylinder thorax 26.
As shown in Figure 1, on cylinder body 16, stator 8 across framework 36 usefulness bolt, framework 36 is fixed in seal container 2.
In detail, motor 4 and compressing mechanism 6 are by pedestal part 38 supportings of framework 36 bottoms, and framework 36 utilizes pedestal part 38 to be fixed in seal container 2.On the other hand; In the cylindrical part 40 on framework 36 tops; On the inner peripheral surface 40a of cylindrical part 40, dispose the bearing 42 of main shaft part 24, on the 40b of the upper-end surface of cylindrical part 40, dispose the bearing 44 such as thrust race (bearing) or thrust washer of the thrust load of bear rotor 10.
As shown in Figure 2, valve plate 30 comprises the inlet hole 46 and tap hole 48 of refrigeration agent, and inlet hole 46, tap hole 48 are that suction valve 50, expulsion valve 52 are opened and closed by leaf valve respectively.
Cylinder head 34 comprises suction chamber 54, the discharge chamber 56 of refrigeration agent, and in the compression stroke of piston 18, expulsion valve 52 is opened, and discharges chamber 56 and is communicated with cylinder thorax 26 via tap hole 48.On the other hand, in the suction stroke of piston 18, suction valve 50 is opened, and suction chamber 54 is communicated with cylinder thorax 26 via inlet hole 46.
On seal container 2, be fixed with suction pipe 58 and discharge tube 60, an end of suction pipe 58 and discharge tube 60 is connected with discharge chamber 56 with the suction chamber 54 of cylinder head 34 respectively.The other end of suction pipe 58 and discharge tube 60 is connected with refrigeration cycle through not shown absorbing silencer, exhaust silencer, and above-mentioned baffler has reduced the fluctuation and the noise of the refrigeration agent that between compressor 1 and refrigeration cycle, flows.
The eccentric axial portion 22 that is provided with crankshaft 14 at an end of connecting rod 20 connects to the big end 62 that can rotate freely, and is provided with at the other end of connecting rod 20 piston 18 is connected to the small end 64 that can freely move back and forth.Small end 64 links with piston 18 through wrist pin 66, and wrist pin 66 is provided with fixing pin 68 and prevents to come off from piston 18.
Under this state, when crankshaft 14 rotations, connecting rod 20 is the off-centre rotation interlock ground oscillating motion of fulcrum and eccentric axial portion 22 with wrist pin 66, oscillating motion interlock ground to-and-fro motion in cylinder thorax 26 of piston 18 and connecting rod 20.
Main effect has the suction pressure from refrigeration agent in seal container 2, stores the lubricant oil that has on a small quantity each slide part to the motor 4 that is called bearing 42,44 and compressing mechanism 6 be lubricated at the inner bottom part 2a of seal container 2.
In crankshaft 14, be equipped with oil circuit (oil feeding mechanism) 70 midway from roughly shaft core position to the main shaft part 24 of the lower end surface 22a of eccentric axial portion 22.The top of oil circuit 70 is from the outer circumferential face 24a opening of main shaft part 24, and the bottom of oil circuit 70 is connected with oil pipe (oil feeding mechanism) 72.Oil pipe 72 has from the roughly axle center of eccentric axial portion 22 rake 74 that tilts towards the direction near the axle center of main shaft part 24 in its forward end, and the oil that the cross section that the front end of the rake 74 of oil pipe 72 extends to the inner bottom part 2a formation seal container 2 in is concavity accumulates portion 76.
Oil accumulates portion 76 and has the size and the degree of depth more than the front position that when storing the less amount of lubrication oil about 200cc for example fuel head reaches oil pipe 74.When eccentric axial portion 22 and oil pipe 72 with the rotation of crankshaft 14 during eccentric rotation, the lubricant oil skew back top effect outwardly of the rake 74 in the oil pipe 72 is had centrifugal force, under this action of centrifugal force, lubricant oil is accumulated portion 76 from oil and is drawn into oil circuit 74.In addition, along with the off-centre rotation of oil pipe 72, a part of lubricant oil that oil accumulates portion 76 disperses in seal container 2 with being parabolic shape.
Below, the action and the effect of compressor 1 described.
In compressor 1,, make rotor 10 rotations of being fixed in main shaft part 24, thereby make crankshaft 14 rotations, and make piston 18 to-and-fro motion in cylinder thorax 26 through connecting rod 20 through to stator 8 power supplies.Then, through the to-and-fro motion of this piston 18, with refrigeration agent 26 suctions from refrigeration cycle towards the cylinder thorax, this refrigeration agent is compressed in cylinder thorax 26, is discharged to refrigeration cycle then.
Particularly; Piston 18 is towards the direction action of the volume that reduces cylinder thorax 26; Refrigeration agent in the cylinder thorax 26 is compressed, when the pressure in the cylinder thorax 26 surpasses the head pressure of refrigeration agent, utilizes the pressure in the cylinder thorax 26 to open expulsion valve 52 with the difference of discharging the pressure in the chamber 56.Then, compressed refrigeration agent is directed to via tap hole 48 discharges chamber 56, and is discharged to refrigeration cycle via discharge tube 60.
Next, when the action of piston 18 began from upper dead center to be diverted to the direction that increases the volume in the cylinder thorax 26, the pressure in the cylinder thorax 26 descended.When the pressure in the cylinder thorax 26 descends, close expulsion valve 52 according to pressure in the cylinder thorax 26 and the difference of discharging the pressure in the chamber 56.
When the pressure in the cylinder thorax 26 reaches the suction pressure of refrigeration agent when following, open suction valve 50 according to the difference of the interior pressure of the pressure in the cylinder thorax 26 and suction chamber 54.Then, the refrigeration agent of refrigeration cycle is directed to suction chamber 54 via suction pipe 58, and is inhaled in the cylinder thorax 26 via inlet hole 46.
Next, when the action of piston 18 began from lower dead centre to be diverted to the direction that reduces the volume in the cylinder thorax 26, the refrigeration agent in the cylinder thorax 26 was by compression once more.Carry out like this, repeatedly with refrigeration agent 26 suck from refrigeration cycle towards the cylinder thorax, cylinder thorax 26 in compressed refrigerant, with refrigeration agent towards this a series of step of refrigeration cycle discharge.
Accumulated the lubricant oil that portion 76 is drawn into oil circuit 70 from oil along with the action of above-mentioned compressor 1 and flow out from oil circuit 70, the lubricant oil of outflow is parabolic shape ground and in seal container 2, disperses.The lubricant oil that disperses is under eccentric axial portion 22 effluents, with to being lubricated near the big end 62.In addition, lubricant oil disperses towards piston 18 because of the 22b of eaves portion that is formed at eccentric axial portion 22, to be lubricated near the protection department 18a to piston 18.
On the other hand; The a part of lubricant oil that flows out from oil circuit 70 rises along the not shown circumferential groove that is formed at crankshaft 14 under action of centrifugal force; And between crankshaft 14 and framework 36, form oil film so that bearing 42 is lubricated, and move towards the upper end side of crankshaft 14.In addition, lubricant oil runs underneath to oil and accumulates portion 76 after the upper-end surface 40b that arrives cylindrical part 40 is lubricated bearing 44 under the effect of gravity.Relative therewith; The lubricant oil that does not flow through bearing 44 fully directly rises to the upper end of rotor 10 along the internal face 10a of rotor 10; After dispersing at centrifugal force that the rotation of reason rotor 10 produces and stator 8 being cooled off, under the effect of gravity, run underneath to oil and accumulate portion 76.
When being lubricated near the protection department 18a to piston 18, the mist of oils that are inhaled in the cylinder thorax 26 get into the gap between piston 18 and the cylinder body 16 with the refrigerant gas that spills from cylinder thorax 26, thereby carry out the sealing of piston 18 and lubricate.At this moment, the lubricant oil that is attached to the wall 54a of suction chamber 54 accumulates portion 76 because of gravity runs underneath to oil.Run underneath to the lubricant oil that oil accumulates portion 76 as stated and drawn once more, when as stated each slide part of motor 4 and compressing mechanism 6 being lubricated, sealing, seal container 2 in, circulate from oil pipe 72.
Yet as shown in Figure 3 in the present embodiment, seal container 2 forms shell structure, is made up of the top shell that covers motor 4 sides 78 and drain pan 80 these two shells that cover compressing mechanism 6 sides.Because crankshaft 14 is in the roughly position relation of quadrature with connecting rod 20 in seal container 2, therefore, the long side direction of motor 4 is housed on the depth direction of top shell 78, and top shell 78 is compared with drain pan 80 and is dark Bottom Shape.On the other hand, the footpath that the long side direction of compressing mechanism 6 is housed in drain pan 80 makes progress, and drain pan 80 is compared with top shell 78 and is shallow Bottom Shape.
Each shell 78,80 has at each open end 78a, the outstanding root edge of 80a, forms fluting portion 82 to fetching each other through making each root edge.Each shell the 78, the 80th is engaged with together through the weld part 84 that is formed on the continuous weld bead shape of fluting portion on 82 full weeks with weld job, promptly utilizes the place's butt welded joint that forms with weld job and is engaged with together.
Drain pan 80 is by forging and molding and have the handle 86 of being controlled when this forging and molding, and handle 86 is convexly set in the outer top 80c that more leans on the drain pan 80 of radial center side than the sidepiece 80b of drain pan 80.Oil accumulates portion 76 and is arranged with in the position of the inner bottom part 2a of the back side of this handle 86, and is and the profile of handle 86 shapes similar roughly.That is, drain pan 80 is with the roughly the same wall thickness formation of sidepiece 80b from sidepiece 80b to outer top 80c.
Being equipped with on every side of the handle 86 of top 80c is used for stably carrying the base plate 88 of putting compressor 1 outside.Lower surface through at base plate 88 is installed not shown vibration-proof rubber etc., can suppress vibration and fixing compressor 1 in the action.
Here, as shown in Figure 4, in the present embodiment, near the madial wall 80d the open end 80a of drain pan 80, be formed with radial center side, promptly accumulate the resistive portion 90 of the side-prominent lubricant oil of portion 76 towards oil towards drain pan 80.Resistive portion 90 is towards oil and accumulates the double outstanding waveform of portion's 76 sides, when observing drain pan 80 from the top, relatively is provided with two resistive portion 90 in the position of accumulating portion 76 across oil.
On the upper surface 90a of resistive portion 90, be fixed with the framework 36 that stator 8 and cylinder body 16 are supported shown in Figure 1, resistive portion 90 also has as the function that is used for framework 36 is fixed in the pedestal part of seal container 2.
Handle 86, the oil that is formed at drain pan 80 like this accumulates portion 76 and resistive portion 90 all forms when drain pan 80 forging and moldings together.
In above-mentioned first embodiment's compressor 1; In seal container 2; Especially in drain pan 80, when observing from the top for example the lubricant oil that disperses of the rotation of the oil pipe 72 of rotation toward the clockwise direction, other is because of discharging from oil circuit 70, colliding the madial wall 80d that the lubricant oil that disperses can be attached to drain pan 80 with the 22b of eaves portion.Then, this lubricant oil can be along madial wall 80d in the flows that upwards rotates in the week of drain pan 80.
But; Shown in arrow among Fig. 5; Even if the existence because of resistive portion 90 make lubricant oil (b) that (a) disperse and resistive portion 90 direct collisions or not with the situation of resistive portion 90 direct collisions under; Owing to (c) be attached to madial wall 80d and when madial wall 80d begins to rotate when lubricant oil, can be because of crossing resistive portion 90, and the speed that moves it is slowed down significantly.The lubricant oil meeting (d) of slowing down runs underneath to oil immediately and accumulates portion 76, and can not continue to rotate along madial wall 80d.By this, can shorten significantly that lubricant oil runs underneath to that oil accumulates portion 76 after dispersing and by the needed time T till accumulating.
Especially, if the initial velocity v that lubricant oil disperses is big more, the viscous force of lubricant oil is big more, and then this needed time T is just long more.In addition, be that small-sized and oily as stated maximum oil reserve of accumulating portion 76 is for example under a spot of situation in the 200cc left and right sides, if needed time T is longer at compressor 1; Then oily oil reserve of accumulating portion 76 can temporarily significantly reduce; Under the worst situation, can cause is zero state, and oil feeding mechanism dallies and can not work; Can be towards each slide part of motor 4 and compressing mechanism 6 fuel feeding rightly, thereby the greasy property that produces compressor 1 significantly reduces such problem.
Yet, in the present embodiment,, also can improve the cycle efficiency of lubricant oil, and can improve the greasy property of compressor 1 even if be under a spot of situation with the maximum oil reserve that runs up, the viscous force of lubricant oil is big and oil accumulates portion 76 in above-mentioned compressor 1.
In addition, through framework 36 is fixed in resistive portion 90, can resistive portion 90 usefulness be acted on the pedestal part that framework 36 is fixed in seal container 2; Therefore; Need not to establish in addition the position, establish member in addition, just can framework 36 be fixed in seal container 2, thereby can improve the productivity of compressor 1.
In addition,, therefore, need not other member, other processing, just can easily form resistive portion 90 and oil accumulates portion 76, thereby can improve the productivity of compressor 1 because resistive portion 90 and oil accumulate portion 76 and when drain pan 80 forging and moldings, is shaped together.
In addition, because being towards oil, resistive portion 90 accumulates the double outstanding waveform of portion's 76 sides, in addition; Two resistive portion 90 also are set, and therefore, are that one situation is compared with resistive portion 90 outstanding; In addition; Compare with the situation that a resistive portion 90 is only arranged, it is big that the probability of lubricant oil that disperses and resistive portion 90 direct collisions becomes, perhaps; Even if lubricant oil not with the situation of resistive portion 90 direct collisions under, the number of times that lubricant oil is attached to madial wall 80d and when madial wall 80d begins to rotate, crosses resistive portion 90 also can increase.Therefore; Lubricant oil is slowed down; And can shorten further that lubricant oil runs underneath to that oil accumulates portion 76 after dispersing and by the needed time T till accumulating, therefore, even if be under a spot of situation with the maximum oil reserve that runs up, the viscous force of lubricant oil is big and oil accumulates portion 76 at compressor 1; Also the cycle efficiency of lubricant oil can be further improved, and the greasy property of compressor 1 can be improved.
The present invention is not limited to the foregoing description, can also carry out various distortion.
Particularly; Resistive portion is not limited to as the resistive portion 90 of present embodiment on madial wall 80d to accumulate towards oil that portion 76 is side-prominent to be provided with such shape; As long as the lubricant oil that can make progress to the week of madial wall 80d smooth and easy flows and to carry out choked flow lubricant oil is slowed down; And lubricant oil is guided to oil accumulate portion 76 and get final product, can consider different shape, quantity is set.Particularly, both the such member of spoiler can be set on madial wall 80d, and also can make the part of madial wall 80d be recessed into waveform.In addition, both can the concavo-convex of zigzag fashion upwards be set, also can the concavo-convex of step shape upwards be set in the week of madial wall 80d in the week of madial wall 80d.
In addition, the working fluid of the compressor 1 of present embodiment is a carbon dioxide coolant, but is not limited thereto.But; Working fluid is being made as under the situation of carbon dioxide coolant; The pressure of the working fluid of discharging from compressing mechanism 6 arrives supercritical state and is in high pressure, and compressor 1 temperature inside is in high temperature, therefore; Use the higher lubricant oil of viscosity, the viscosity reduction when preventing because of high temperature produces the oil film cracking.But, be under the situation of low temperature in compressor 1 temperature inside, because the viscosity of lubricant oil is bigger, therefore, there is the tendency that is difficult for returning in the lubricant oil that disperses.But, according to said structure,, also can improve the cycle efficiency of lubricant oil, and can improve the greasy property of compressor 1 even if there is the tendency that is difficult for returning in the viscosity of lubricant oil lubricant oil big, that disperse, this point is comparatively desirable.
In addition; In the present embodiment, the compressor 1 of positive displacement is illustrated, but the present invention can be applicable to all closed type fluid machines such as scroll compressor, expander; Certainly, also can be with these fluid machineries as the constitution equipment that is assembled to the refrigeration cycle beyond the vending machine.
Symbol description
1 compressor (fluid machinery)
2 seal containers
The 2a inner bottom part
4 motor (driver element)
6 compressing mechanisms (drived unit)
14 crankshafts (rotating shaft)
36 frameworks
70 oil circuits (oil feeding mechanism)
72 oil pipes (oil feeding mechanism)
76 oil accumulate portion
80 drain pans
The 80d madial wall
90 resistive portion

Claims (8)

1. fluid machinery contains driver element and through the rotating shaft transmission drived unit of the driving force of said driver element is arranged in seal container, it is characterized in that, comprising:
Oil accumulates portion, and this oil accumulates portion and accumulates lubricant oil at the inner bottom part of said seal container; And
Oil feeding mechanism, this oil feeding mechanism is supplied to each slide part of said driver element and said drived unit through the lubricant oil that said oil is accumulated portion with the rotation of said rotating shaft one,
Said seal container has the mobile resistive portion that hinders to the lubricant oil that makes progress in week of said madial wall on the sidewall within it.
2. fluid machinery as claimed in claim 1 is characterized in that,
Said resistive portion is accumulated the side-prominent setting of portion towards said oil on said madial wall.
3. fluid machinery as claimed in claim 2 is characterized in that,
Said fluid machinery comprises the framework that said driver element and said drived unit are supported,
Said frame fixation is in said resistive portion.
4. fluid machinery as claimed in claim 3 is characterized in that,
Said seal container comprises by the drain pan of forging and molding,
Said resistive portion is shaped when said drain pan forging and molding together.
5. fluid machinery as claimed in claim 4 is characterized in that,
Said oil accumulates portion and when said drain pan forging and molding, is shaped together.
6. fluid machinery as claimed in claim 5 is characterized in that,
Said resistive portion is towards said oil and accumulates the outstanding continuously waveform of portion's side.
7. like each described fluid machinery in the claim 1 to 6, it is characterized in that,
Be provided with a plurality of said resistive portion.
8. like each described fluid machinery in the claim 1 to 7, it is characterized in that,
Effect has the pressure of the working fluid that is inhaled into said drived unit and discharges from said drived unit in said seal container,
Said working fluid is a carbon dioxide coolant.
CN2011800074442A 2010-01-29 2011-01-27 Fluid machinery Pending CN102725527A (en)

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JP2010018425A JP2011157831A (en) 2010-01-29 2010-01-29 Fluid machinery
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PCT/JP2011/000459 WO2011093086A1 (en) 2010-01-29 2011-01-27 Fluid machinery

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MX2012008748A (en) 2012-11-23
US20120308410A1 (en) 2012-12-06
EP2514972A4 (en) 2014-02-26
BR112012018673A2 (en) 2016-05-03
EP2514972A1 (en) 2012-10-24
JP2011157831A (en) 2011-08-18
WO2011093086A1 (en) 2011-08-04
KR20120103744A (en) 2012-09-19

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Application publication date: 20121010