CN205638916U - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
- Publication number
- CN205638916U CN205638916U CN201620350387.8U CN201620350387U CN205638916U CN 205638916 U CN205638916 U CN 205638916U CN 201620350387 U CN201620350387 U CN 201620350387U CN 205638916 U CN205638916 U CN 205638916U
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- CN
- China
- Prior art keywords
- pressure
- scroll
- lobe
- path
- hermetic container
- 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.)
- Expired - Fee Related
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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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- 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
- 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
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0253—Details concerning the base
-
- 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
- F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/023—Lubricant distribution through a hollow driving shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
- F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
Abstract
The utility model relates to a scroll compressor. The bedplate portion of swing vortex spare has a pressure route, and this pressure route is the radial the most inboard side room intercommunication of being located in bellying exterior space and a plurality of compression chambers, when the reversal operation of motor, the refrigerant gaseous from bellying exterior space via the pressure route and mobile to side room in, advance the fuel feeding of menstruation by the fuel feeding route because of bellying exterior space's pressure decrease. In addition, have a pressure route check valve mechanism in the pressure route, this pressure route check valve mechanism allow refrigerant gaseous from bellying exterior space orientation in side room flow to prevent the gaseous reversed flow of refrigerant.
Description
Technical field
This utility model relates to the scroll compressor of the purposes such as air-conditioning and hot water supply.
Background technology
Existing general scroll compressor possesses in hermetic container: compression mechanical part；Electronic
Machine, compression mechanical part is driven by it；And main shaft, the revolving force of motor is transferred to by it
Compression mechanical part.Compression mechanical part possesses: fixed scroll and swing scroll, they are at seat board
There is in portion tabular volute tooth；Fixed frame, it is provided with stationary base；And crosshead mechanism,
Its rotation preventing from swinging scroll.And, fixed scroll and swing scroll are combined as making
Obtain tabular volute tooth engagement each other, thus form multiple compressions that refrigerant gas is compressed
Room.Swing scroll to be kept by the fixed scroll and fixed frame being fixed on hermetic container, Gu
Determine framework via oscillation bearing, the swinging axle portion of main shaft to be supported, and by the rotation of main shaft
And make to swing scroll and carry out oscillating motion.
In this scroll compressor, hermetic container be internally formed into high pressure (discharge pressure),
And in the vertical vortex formula compressor on the compression mechanical part top that is configured at motor, for refrigerator oil
The store oil portion of storage is arranged at bottom hermetic container, and this store oil portion is formed as high pressure (discharge pressure).
Compression mechanical part as the top being pointed in hermetic container supplies the confession of refrigerator oil of high pressure
, there is pressure reduction fuel system in oil mode.Which is following manner: at the compression mechanical part of main shaft
It is formed about pressure and (such as, swings scroll lobe outside empty less than the space of discharge pressure
Between), and carry out fuel feeding by the pressure reduction between the store oil portion of high pressure.According to this pressure reduction fuel feeding
Mode, the refrigerator oil in store oil portion is mainly borrowing axially through the fuel supply path formed along main shaft
Pressing aid is poor and rises, and flows out to swing inside scroll lobe from the upper end open of fuel supply path
Space is (hereinafter referred to as lobe inner space.), then by swinging outside scroll lobe
Space is (hereinafter referred to as lobe space outerpace.) supply.
But, such as, sometimes produce distribution mistake when unit (such as air conditioner) installing engineering
(to distribution mistake (the order entanglement of the phase of three phase mains so-called inverse of the terminal of unit
Phase)).Even if producing this distribution mistake, generally reverse-phase relay is prevented to be also carried out work when driving
Make and scroll compressor is not supplied electric power, but sometimes because preventing reverse-phase relay short circuit or coming off
And forcibly cause scroll compressor and start.In this case, as scroll compressor, carry out
The reversion contrary with rotating forward, in other words, carries out reversion operating.
If the motor of scroll compressor is carried out continuously reversion operating, then compression mechanical part does not become
For the compressor that cold-producing medium is compressed, but move as the expansion apparatus making cold-producing medium expand
Make.If being absorbed in this reversion operating, then it is not compressed action at compression mechanical part, therefore,
Should from discharge chambe to the gases at high pressure of discharge in hermetic container not in the case of being compressed action
It is discharged to hermetic container, thus the pressure in hermetic container does not rise.Therefore, not convex
Rise between in portion's space outerpace and hermetic container and produce pressure reduction.Therefore, in the whirlpool of pressure reduction fuel system
Rotary compressor exists following problem etc.: the slipper in compression mechanical part is not supplied
Oil, so that main shaft and swinging axle burn because of the insufficient lubrication of each bearing of compression mechanical part
Wound.
But, the scroll compressor that have employed pressure reduction fuel system exists following vortex pressure
Contracting machine: in the refrigerant suction port connected with discharge chambe of fixed scroll with in hermetic container
Between the suction pressure space connected with suction tube, it is provided with and prevents cold-producing medium from refrigerant suction port
The inhalation check valve mechanism (for example, referring to patent documentation 1,2) flow backwards to suction pressure space.
In this scroll compressor, in the case of becoming expansion apparatus when reversion operating, pressure is in pressure
Contracting mechanism part drops towards most external (outermost side room) from the penetralia (medial chamber) of discharge chambe
Low.And, the cold-producing medium arriving outermost side room makes the route of retreat close by inhalation check valve mechanism,
Therefore the pressure in outermost side room rises, and on the other hand, compared with medial chamber, will arrive outermost
The pressure of the discharge chambe before side room reduces.
In patent documentation 1 and patent documentation 2, be provided with in like fashion so that with medial chamber
Intermediate pressure chamber that phase specific pressure decreases is (in the most external (outermost side room) of discharge chambe with upper
State the room formed between medial chamber) path that connects with lobe space outerpace.And, via
This path and by pressure from lobe space outerpace to intermediate pressure chamber guide, thus make outside lobe
Space, portion is formed as the low-voltage space lower than the pressure within hermetic container, even if when reversion operating
Also produce pressure reduction between in low-voltage space and hermetic container and fuel feeding can be carried out.
It addition, propose following compressor: the central part in the seat board portion swinging scroll is provided with
Through hole, is provided with check valve mechanism at this through hole, and this check valve mechanism allows refrigerant gas
From the lobe inner space of swing scroll, the medial chamber towards discharge chambe flows, and stops system
Refrigerant gas flows (for example, referring to patent documentation 3) from medial chamber to lobe inner space.
In patent documentation 3, making to be formed as negative in medial chamber because motor carries out reversion operating
In the case of pressure, from lobe inner space via check valve mechanism, cold-producing medium is supplied to interior
Side room.Thus, the negative pressure of medial chamber is released, prevents because swing scroll is pressed on fixing
Scroll and the inordinate wear that causes and damage.
Patent documentation 1: Japanese Unexamined Patent Publication 2011-106322 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2011-111969 publication
Patent documentation 3: Japanese Patent Publication 4-91291 publication
According to patent documentation 1 and patent documentation 2, make to decrease with medial chamber phase specific pressure
Medial compartment connect with lobe space outerpace, thus in lobe space outerpace and hermetic container
Between produce pressure reduction such that it is able to reversion operating time to compression mechanical part fuel feeding.
But, in the case of the compressor of patent documentation 1 and patent documentation 2, be formed as
Lower structure: the outlet at the central part being formed at fixed scroll is provided with dump valve mechanism, only
Allow refrigerant gas empty to the inside of hermetic container via outlet from medial chamber (discharge chambe)
Between one-way flow, therefore there is problems with.That is, when reversion operating, cold-producing medium is from airtight
It is discharged valve system to the flowing of medial chamber in container to stop, thus cold-producing medium cannot be from outlet
Flow into medial chamber.Thus, there are the following problems: medial chamber is absorbed in the state close to vacuum,
Fixed scroll operates with crimped status with swinging scroll, thus produces different at tabular volute tooth
Often abrasions etc., cause reliability to reduce.
It addition, in the case of the compressor described in patent documentation 3, when reversion operating etc.,
Even if in the case of the pressure of medial chamber reduces because of certain reason, refrigerant gas and cold
Freeze machine oil also to arrange from lobe inner space via the central part in the seat board portion swinging scroll
Through hole and to medial chamber flow into such that it is able to avoid the vacuum state of medial chamber.
But, the technology of patent documentation 3 is being applied to such as patent documentation 1 and patent documentation 2
In the case of have employed the scroll compressor of pressure reduction fuel system like that, from the fuel supply path of main shaft
The refrigerator oil that flows out towards lobe inner space of upper end open not to being arranged in lobe
Oscillation bearing in space, portion is lubricated, but directly to medial chamber stream together with cold-producing medium
Enter.Accordingly, there exist following problem: cannot be to the oscillation bearing axle being arranged at lobe inner space
Fuel feeding so that the swinging axle portion burn of main shaft etc. and cause reliability to reduce.
Utility model content
This utility model completes to solve above-mentioned this problem, its object is to provide one
Planting scroll compressor, it possesses dump valve mechanism, in this scroll compressor, it is possible at electricity
The vacuum state of medial chamber is avoided during motivation reversion operating, and can be in motor reversion operating
Time to bearing fuel feeding.
Scroll compressor involved by this utility model possesses: hermetic container；Compression mechanical part, its
It is arranged in hermetic container and has fixed scroll and swing scroll, described fixed scroll
And swing scroll the tabular volute tooth being respectively arranged in respective seat board portion be mutually combined and
Form multiple discharge chambe；Motor, compression mechanical part is driven by it；Main shaft, it is via swing
Bearing and be inserted in the way of rotatable swing scroll seat board portion in be arranged at tabular whirlpool
The lobe in the face of the opposition side of shape tooth, this main shaft rotates by motor, so that swing whirlpool
Rotating part carries out oscillating motion；And dump valve mechanism, the outlet being arranged at fixed scroll is covered by it
Lid, it is allowed to refrigerant gas flows towards the inner space of hermetic container via outlet from discharge chambe
Moving, and stop the reverse flow of refrigerant gas, main shaft has fuel supply path, utilizes this fuel supply path
And the pressure reduction between pressure of based on the pressure in hermetic container and the space outerpace of lobe, by airtight
Refrigerator oil supply in container, to the sliding part including compression mechanical part, swings the seat of scroll
Plate portion has pressure-path, and this pressure-path is by the space outerpace of lobe and the position in multiple discharge chambes
Medial chamber in radially inner most connects, and described scroll compressor possesses pressure-path check-valves machine
Structure, this pressure-path check valve mechanism is arranged at pressure-path, it is allowed to refrigerant gas is from lobe
Space outerpace flows towards medial chamber, and stops the reverse flow of refrigerant gas, at motor
Reversion operating time, refrigerant gas from the space outerpace of lobe via pressure-path to medial chamber
Flowing, carries out the fuel feeding via fuel supply path because the pressure of the space outerpace of lobe reduces.
According to this utility model, it is provided with lobe space outerpace in the seat board portion swinging scroll
With the path that medial chamber connects, therefore, motor reversion operating time, by by outside lobe
The pressure in space, portion imports medial chamber and it can be avoided that the vacuum state of medial chamber.It addition, because of
Cold-producing medium makes lobe space outerpace from lobe space outerpace to the flowing of medial chamber
Pressure reduces, so that the pressure of lobe space outerpace is less than the pressure in hermetic container, by
This is able to ensure that the pressure reduction needed for fuel feeding, can be when reversion operating to compressor therefore, it is possible to obtain
The scroll compressor of high reliability of each several part fuel feeding.
Accompanying drawing explanation
Fig. 1 is the structure illustrating the scroll compressor involved by embodiment 1 of the present utility model
Schematic cross sectional view.
Fig. 2 is compression mechanical part and the schematic cross sectional view about of Fig. 1.
Fig. 3 is to illustrate the pressure in the scroll compressor involved by embodiment 1 of the present utility model
The pressure of the lobe space outerpace when flowing of refrigerator oil during difference fuel feeding and pressure reduction fuel feeding
The schematic diagram of flowing.
Fig. 4 is to illustrate curve chart A and the figure of curve chart B, and wherein, curve chart A illustrates this
The scroll compressor involved by embodiment 1 of utility model inverts when operating and pressure road
The change of the pressure adjustment capability of the diameter corresponding lobe space outerpace in footpath, curve chart B illustrates
Scroll compressor rotates forward the change of the corresponding compressor efficiency of the diameter with pressure-path when operating
Change.
Fig. 5 is illustrate scroll compressor involved by embodiment 2 of the present utility model main
The schematic cross sectional view of part.
Description of reference numerals:
1 ... fixed scroll, 1a ... seat board portion, 1b ... tabular volute tooth, 1c ... crosshead guiding groove,
1d ... outlet, 2 ... swing scroll, 2a ... seat board portion, 2b ... tabular volute tooth, 2c ... ten
Prefix guiding groove, 2d ... lobe, 2e ... oscillation bearing, 2f ... thrust face, 2g ... outside lobe
Space, portion (low-voltage space), 2h ... pressure-path, 2i ... bolt, 2j ... extraction hole, 2k ... pressure road
Footpath check valve mechanism, 2l ... bolt, 3 ... movable framework, 3a ... thrust bearing, 3b ... face, 3c ... main
Bearing, 3d ... auxiliary spindle holds, 3e ... be above fitted together to cylindrical portion, 3f ... lower chimeric cylindrical portion, 3g ...
Movable framework check valve mechanism, 3h ... connecting path, 4 ... fixed frame, 4a ... be above fitted together to cylinder
Portion, 4b ... lower chimeric cylindrical portion, 5 ... refrigerator oil, 6 ... main shaft, 6a ... swinging axle portion, 6b ...
Main shaft part, 6c ... countershaft portion, 6d ... fuel supply path, 7 ... sub-frame, 7a ... supplementary bearing, 8 ... ten
Prefix mechanism, 8a ... fixing side switch, 8b ... swing side switch, 8c ... crosshead mechanism annulus, 9 ...
Dump valve mechanism, 9a ... dump valve, 10 ... compression mechanical part, 11a ... white hollow arrow, 12 ...
Suction tube, 12a ... compressor suck space, 13 ... discharge pipe, 14 ... discharge chambe, 14a ... compression
Suction space, room, 14b ... outermost side room, 14c ... medial chamber, 20 ... motor, 21 ... electronic
Machine stator, 22 ... motor rotor, 100 ... scroll compressor, 100a ... hermetic container, 100b ...
Hermetic container inner space.
Detailed description of the invention
Embodiment 1.
Fig. 1 is the structure illustrating the scroll compressor involved by embodiment 1 of the present utility model
Schematic cross sectional view.In Fig. 1 and each figure described later, it is labelled with wanting of identical reference
Element represents identical or the most suitable key element, and this is the most general.Further, explanation
In book full text, the mode of the structural element of statement is after all for illustrating, and is not limited to these notes
Carry.It addition, about the height of temperature, pressure etc., do not advise according to the relation of absolute value especially
Its height fixed etc., and the state being based in system, device etc., action etc. and relatively specify.
Scroll compressor 100 at least have in hermetic container 100a compression mechanical part 10 and
Motor 20.This compression mechanical part 10 is linked by main shaft 6 with motor 20, and this main shaft 6 is by electricity
Revolving force produced by motivation 20 is transferred to compression mechanical part 10.
It addition, be provided with suction tube 12 at hermetic container 100a, it is for sucking gas；
And discharge pipe 13, it is for discharging the gas after compression.It addition, hermetic container 100a
Bottom becomes the store oil portion storing refrigerator oil 5, by pressure reduction described later from along main shaft
The lower ending opening axially through the fuel supply path 6d formed of 6 draws upward and is stored in store oil portion
Refrigerator oil 5, and make this refrigerator oil 5 from fuel supply path 6d by and supply to swinging axle
Hold 2e, base bearing 3c, auxiliary spindle hold each sliding part of 3d and compression mechanical part 10.
Compression mechanical part 10 possesses fixed scroll 1 and swings scroll 2.Fixed scroll 1
Possess: seat board portion 1a；And tabular volute tooth 1b, it becomes vertical in a face of seat board portion 1a
Act the vortex-like projection arranged, utilize bolt (not shown) etc. to be fixed on close by this fixed scroll 1
Close container 100a.Swing scroll 2 to possess: seat board portion 2a；And tabular volute tooth 2b, its
Becoming the vortex-like projection erecting setting in a face of seat board portion 2a, this swing scroll 2 is with pendulum
Dynamic mode freely is supported on the swinging axle portion 6a described later of main shaft 6.And, fixed scroll 1
Tabular volute tooth 1b and swing scroll 2 tabular volute tooth 2b be combined as engaging each other, by
Tabular volute tooth 1b after combination and tabular volute tooth 2b multiple spaces spaced apart from each other become system
Multiple discharge chambes 14 that refrigerant gas is compressed.
For multiple discharge chambes 14, from be positioned at multiple discharge chambe 14 periphery and with suction
It is outermost that the discharge chambe of pipe 12 connection sucks space 14a being positioned in multiple discharge chambes 14
Refrigerant gas is sucked by outer side chamber 14b, and along with the rotation of main shaft 6 make refrigerant gas to
Central part shifts and improves the pressure of refrigerant gas.
Central part in fixed scroll 1 is formed for by the cold-producing medium discharge of boil down to high pressure
Outlet 1d.Being configured with dump valve mechanism 9 in outlet 1d, this dump valve mechanism 9 is by this row
Outlet 1d covers, it is allowed to refrigerant gas is positioned at radially inner most from multiple discharge chambes 14
Medial chamber 14c flows towards the inner space of hermetic container 100a via outlet 1d, and
Stop the reverse flow of refrigerant gas.Dump valve mechanism 9 has the dump valve 9a of leaf spring, if
Cold-producing medium is compressed into authorized pressure in discharge chambe 14, then overcome its elastic force to enter dump valve 9a
Row presses and is opened by this dump valve 9a, so that outlet 1d is opened wide.And, after compression
Cold-producing medium discharged to hermetic container inner space 100b by outlet 1d after opening wide, and make
Obtain this cold-producing medium from discharge pipe 13 by and be expelled to the outside of scroll compressor 100.Therefore,
Hermetic container inner space 100b becomes high-pressure space.
It addition, in the seat board portion 2a swinging scroll 2, be formed with tabular volute tooth 2b's
The central part in the face (in FIG for lower surface) of the opposition side in face is formed with the convex of hollow cylindrical
Playing portion 2d, the medial surface in this lobe 2d is configured with oscillation bearing 2e.It addition, in seat board portion
In 2a, at the peripheral part in the face (being lower surface in FIG) of the side identical with lobe 2d
It is formed and can carry out, relative to the thrust bearing 3a of movable framework 3, the thrust face 2f that crimping is slided.
It addition, be configured with crosshead mechanism between fixed scroll 1 and swing scroll 2
(Oldham mechanism) 8, thus prevent from swinging the rotation of scroll 2 and posture being carried out
Correct.Specifically, a face at the seat board portion 1a of fixed scroll 1 (is in FIG
Lower surface) peripheral part, 2 i.e. 1 couple of crosshead guiding groove 1c are generally formed on straight line.
2 of crosshead mechanism 8 i.e. 1 to fixing side switch 8a to reciprocatingly slide in the circumference of main shaft 6
Mode freely engages with this crosshead guiding groove 1c.
It addition, at the peripheral part of the seat board portion 2a swinging scroll 2, relative to fixed scroll 1
Crosshead guiding groove 1c substantially there is 2 of phase contrast i.e. 1 pair of crosshead guiding groove of 90 degree
2c is generally formed on straight line.2 of crosshead mechanism 8 i.e. 1 to swing side switch 8b with
The mode reciprocatingly slided in the circumference of main shaft 6 freely engages with this crosshead guiding groove 2c.And
And, it is formed for crosshead mechanism annulus 8c in the outside of the thrust bearing 3a of movable framework 3
Carry out the face 3b of reciprocating sliding movement.So, the fixing side switch 8a of crosshead mechanism 8 and pendulum
Dynamic side switch 8b in the way of back and forth sliding freely with the crosshead guiding groove 1c of fixed scroll 1 with
And swing scroll 2 crosshead guiding groove 2c engaging, thus stop swing scroll 2 from
Turn.
Motor 20 possesses: motor stator 21, and it is formed as ring-type；And motor rotor
22, it is supported to can be at the internal rotating of above-mentioned motor stator 21.Motor rotor 22
Hot charging is between countershaft portion 6c described later and main shaft part 6b of main shaft 6.
In hermetic container 100a, fixed frame 4 and sub-frame 7 are with across motor 20
Opposed mode is fixedly installed on hermetic container 100a.It addition, configure in the inner side of fixed frame 4
Have movable framework 3, the central authorities at movable framework 3 and sub-frame 7 be configured with base bearing 3c and
Auxiliary spindle holds 3d.And, main shaft 6 is supported at movable framework 3 in the way of rotatable
And the base bearing 3c of central authorities' setting of sub-frame 7, auxiliary spindle hold 3d and supplementary bearing 7a.
Main shaft 6 is by the swinging axle portion 6a on the top of main shaft 6, main shaft part 6b and main shaft 6 times
The countershaft portion 6c in portion is constituted.Swing scroll 2 via oscillation bearing 2e with swinging axle portion 6a
Chimeric, made to swing scroll 2 by the rotation of main shaft 6 and carry out oscillating motion.Main shaft part 6b
Chimeric with base bearing 3c, and via the oil film produced because of refrigerator oil 5 relative to base bearing 3c
Slide.
Fixed frame 4 has the different multiple cylindrical portion of diameter and connects junction configuration in the axial direction, and
It is configured to diameter reduce in order towards motor 20 side (in FIG for downside).And,
In fixed frame 4, the upper chimeric cylindrical portion of fixed scroll 1 side (being upside in FIG)
4a engages with upper chimeric cylindrical portion 3e of movable framework 3.On the other hand, the electricity of fixed frame 4
Lower chimeric cylindrical portion 4b of motivation 20 side (being downside in FIG) and movable framework 3 times are embedding
Close the engaging of cylindrical portion 3f.
Fig. 2 is compression mechanical part and the schematic cross sectional view about of Fig. 1.
Be surrounded by seat board portion 2a and the movable framework about 3 swinging scroll 2 space,
The seat board portion peripheral part being again the swing scroll 2 in the space of specific thrust bearing 3a outer circumferential side side is empty
Between, become the compressor suction space 12a sucking gas atmosphere (suction pressure).It addition, both
Be by swing scroll 2 seat board portion 2a surround with movable framework about 3 space, again be ratio
The space of thrust bearing 3a inner circumferential side side, becomes the low-voltage space 2g for realizing pressure reduction fuel feeding.
Lobe 2d of swing scroll 2 is positioned at low-voltage space 2g, low-voltage space 2g and is positioned at lobe
The outside of 2d, therefore, is referred to as lobe space outerpace 2g below by low-voltage space 2g.
It addition, be formed with the most through connecting path 3h at movable framework 3.Connecting path
The upper end of 3h connects with extraction hole 2j of the seat board portion 2a swinging scroll 2, connecting path 3h
Lower end connect with movable space between framework 3 and fixed frame 4.And, discharge chambe 14
In intermediate pressure via extraction hole 2j and connecting path 3h and as the back pressure of movable framework 3
And play a role, so that movable framework 3 floats, and make movable framework 3 carry out swinging
The action that scroll 2 presses to fixed scroll 1.It addition, be provided with movably at movable framework 3
Framework check valve mechanism 3g, this movable framework check valve mechanism 3g allows from lobe space outerpace
2g sucks the one-way flow of space 12a to compressor.
And, the seat board portion 2a swinging scroll 2 is provided with pressure-path 2h, this pressure road
Medial chamber 14c is connected with lobe space outerpace 2g and becomes of the present utility model by footpath 2h
Characteristic.Hereinafter the effect to pressure-path 2h is described in detail, and pressure-path 2h sets
When putting for preventing discharge chambe 14 to be in vacuum state when scroll compressor 100 reversion operating
Discharge chambe 14 pressure reduce.Additionally, the processing Kong Youshuan 2i closure of pressure-path 2h.
It follows that align when turning respectively, reversion operating time scroll compressor 100 dynamic
Illustrate.
Fig. 3 is to illustrate the pressure in the scroll compressor involved by embodiment 1 of the present utility model
The pressure of the lobe space outerpace when flowing of refrigerator oil during difference fuel feeding and pressure reduction fuel feeding
The schematic diagram of flowing.White hollow arrow 11a in Fig. 3 represents that refrigerator oil 5 is to compressor
The flowing of each several part.Additionally, operate unrelated with the rotating forward of scroll compressor 100 operating, reversion,
The flowing of refrigerator oil 5 is identical.It addition, in figure 3, dotted arrow represents when rotating forward operating
The flowing of cold-producing medium, solid arrow represents the flowing of cold-producing medium when reversion operates.
(when rotating forward operating)
If motor stator 21 is supplied electric power, then motor rotor 22 produces moment of torsion and makes winner
Axle 6 rotates.Rotation by main shaft 6 so that swing scroll 2 and limited by crosshead mechanism 8
From then carry out oscillating motion.Herein, owing to being to rotate forward operating, so from suction tube 12 by gas
Cryogen is sucked in hermetic container 100a.And, it is sucked into the gas in hermetic container 100a
Cryogen is taken into in fixed scroll 1 via the refrigerant suction port of fixed scroll 1
Tabular volute tooth 1b and the tabular volute tooth 2b swinging scroll 2 between multiple pressures of being formed
Outermost side room 14b in contracting room 14.And, along with the oscillating motion of swing scroll 2,
Outermost side room 14b is while moving to center position while reducing volume from peripheral part.Therefore, it is taken into
Refrigerant gas to the 14b of outermost side room is pressed along with the reduction of the volume of discharge chambe 14
Contracting.Refrigerant gas after compression is from being arranged at outlet 1d of fixed scroll 1 via discharge
Valve system 9 and be discharged in hermetic container 100a.And, it is expelled in hermetic container 100a
Refrigerant gas discharged to the refrigerant loop outside hermetic container 100a from discharge pipe 13.
Herein, lobe space outerpace 2g is affected by the discharge pressure in hermetic container 100a,
Further, movable framework check valve mechanism 3g allow cold-producing medium from lobe space outerpace 2g to pressure
Contracting machine sucks space 12a and flows (dotted arrow of Fig. 3).Therefore, just transport at motor 20
When turning, the intermediate pressure that lobe space outerpace 2g is controlled as between suction pressure and discharge pressure
Power.Thus, when rotating forward operating, because of pressure reduction (high pressure in hermetic container 100a and lobe
The intermediate pressure of space outerpace 2g) and make as in the hermetic container 100a of high-pressure space
The refrigerator oil 5 of bottom storage rises at fuel supply path 6d.Main shaft 6 with fuel supply path 6d
The mode of connection has radially been formed through a plurality of fuel supply path (not shown), at fuel supply path 6d
Rise refrigerator oil 5 from above-mentioned each fuel supply path (not shown) by and be respectively fed to pair
Bearing 7a, base bearing 3c and auxiliary spindle hold 3d.And, from the upper end of fuel supply path 6d
The refrigerator oil 5 that opening flows out is being supplied to the rear to lobe space outerpace of oscillation bearing 2e
2g flows.
(during reversion operating)
When scroll compressor 100 reversion operating, main shaft 6 is to the side contrary with during rotating forward operating
To rotation, therefore, along with swing scroll 2 oscillating motion, medial chamber 14c from
Central side moves to outer peripheral side while being gradually increased volume, so that the refrigeration of medial chamber 14c
Agent gas expansion.So, when reversion operating, cold-producing medium in compression mechanical part 10 by towards with
Rotate forward direction conveying contrary during operating, suck space relative to outermost side room 14b and discharge chambe
14a and then uniaxially collect relative to the unit low-voltage space being connected with scroll compressor 100
In.Therefore, the pressure of outermost side room 14b and discharge chambe suction space 14a becomes to be above rotating forward
Outermost side room 14b during operating and the pressure of discharge chambe suction space 14a.It addition, in reversion
During operating, the refrigerant gas of medial chamber 14c is not up to discharge pressure, therefore refrigerant gas
Will not be expelled to via outlet 1d in hermetic container 100a.Therefore, hermetic container 100a
Interior pressure does not rises.
Therefore, the lobe space outerpace 2g's affected by the pressure in hermetic container 100a
Pressure gets lower than outermost side room 14b and the pressure of discharge chambe suction space 14a, thus arranges
Movable framework check valve mechanism 3g in movable framework 3 does not works.In other words, cold-producing medium is not
Space 14a flowing is sucked to discharge chambe from lobe space outerpace 2g.
It addition, reversion operating time, medial chamber 14c not as rotate forward operate time be formed as
High pressure, the state that therefore dump valve mechanism 9 remains turned-off is constant.Thus, anti-at motor 20
When turning, medial chamber 14c and with the lobe space outerpace 2g that medial chamber 14c connects
Become closing space.And, as it has been described above, the cold-producing medium in medial chamber 14c is by court and rotating forward
The conveying of contrary during operating direction, thus medial chamber 14c be formed as close to vacuum state or
Person's vacuum state.
So, medial chamber 14c is formed as the state close to vacuum or vacuum state, thus
Refrigerant gas in lobe space outerpace 2g or refrigerator oil 5 or their both sides such as figure
As shown in solid arrow in 3 from pressure-path 2h by and from lobe space outerpace 2g to
Medial chamber 14c flows into.Thereby, it is possible to prevent the pressure of medial chamber 14c from reducing and avoiding true
Dummy status.It addition, produce from above-mentioned to medial chamber 14c of lobe space outerpace 2g simultaneously
The result of flowing, compared with the pressure in hermetic container 100a, the pressure of lobe space outerpace 2g
Power reduces.Therefore, perform to rotate forward pressure reduction fuel feeding identical during operating with compressor.
Herein, as described in Patent Document 3, be formed so that lobe " internal " space with
In the case of the structure of medial chamber connection, by as described above from the upper end open stream of fuel supply path
The oil gone out is kept intact and is directly fed to medial chamber unchangeably.In this case, due to not to master
Axle is lubricated with oscillation bearing, it is therefore possible to produce the bad feelings such as main shaft and oscillation bearing burn
Condition.On the other hand, in present embodiment 1, owing to being formed so that lobe " outside " is empty
Between with the structure that medial chamber 14c connects, therefore, flow out from the upper end open of fuel supply path 6d
Oil flow in the following manner: with rotate forward operating time in the same manner as be supplied to main shaft 6 and oscillation bearing
Between 2e, and flow into lobe space outerpace 2g afterwards this slipper is lubricated.
Therefore, it is possible to the unfavorable condition such as suppression main shaft 6 and oscillation bearing 2e burn.
But, pressure-path 2h connects with medial chamber 14c all the time, therefore, and pressure-path 2h
Become so-called dead band (Dead volume), thus the work done during compression implemented by compression mechanical part 10
A part can leak to lobe space outerpace 2g.This can become the weight that compressor efficiency is deteriorated
Want factor.It is below φ 2mm and more than 0mm as its countermeasure, preferably pressure-path 2h.
Fig. 4 is to illustrate curve chart A and the figure of curve chart B, and wherein, curve chart A illustrates this
The scroll compressor involved by embodiment 1 of utility model inverts when operating and pressure road
The change of the pressure adjustment capability of the diameter corresponding lobe space outerpace in footpath, curve chart B illustrates
Scroll compressor rotates forward the change of the corresponding compressor efficiency of the diameter with pressure-path when operating
Change.In the diagram, transverse axis represents the diameter phi [mm] of pressure-path, and the right longitudinal axis represents reversion fortune
Pressure adjustment capability [%] when turning, the left longitudinal axis represents compressor efficiency [%].
As shown in the curve chart B of Fig. 4, scroll compressor 100 rotates forward compressor effect during operating
Rate reduces along with the increase of the diameter of pressure-path 2h.On the other hand, scroll compressor 100
The pressure adjustment capability of lobe space outerpace 2g during reversion operating is straight along with pressure-path 2h
The increase in footpath and rise.Additionally, medial chamber 14c can be supplied to make discharge chambe 14
Even if the state of the cold-producing medium of the interior amount being also not formed as when reversion operating needed for vacuum, it is set to
" the pressure adjustment capability of 100% ".If this compressor adjustment capability is more than 90%, even if then existing
It also is able to the supply system cryogen of medial chamber 14c in the case of when being absorbed in reversion operating, thus vortex
Formula compressor 100 will not sustain damage because of vacuum operating, it is possible to guaranteed before compressor stops
The sufficient time.Herein, if compressor efficiency reduces less than 1%, then become in real-world operation
Do not have the degree of problem.Consider the result of above-mentioned situation, preferably pressure-path 2h is set
For below φ 2mm.
As above, according to present embodiment 1, owing to being formed with pressure-path 2h by outside lobe
Space, portion 2g and the structure that medial chamber 14c connects, therefore, even if also can when reversion operating
Enough fuel feeding performed to compressor each several part such that it is able to prevent the inordinate wear of axle and bearing.
It addition, be obtained in that the scroll compressor 100 of following high reliability, it is it can be avoided that discharge chambe
The vacuum state of 14 such that it is able to prevent fixed scroll 1 and swing the volute tooth of scroll 2
Inordinate wear.
Embodiment 2.
Present embodiment 2 is formed as structure: in pressure-path 2h of embodiment 1,
Cold-producing medium is stoped to flow to lobe space outerpace 2g from medial chamber 14c.
Fig. 5 is illustrate scroll compressor involved by embodiment 2 of the present utility model main
The schematic cross sectional view of part.Hereinafter, right centered by the structure different from the structure of embodiment 1
Present embodiment 2 illustrates.
On the basis of the scroll compressor 100 of embodiment 1, the vortex of present embodiment 2
Formula compressor 100 also possesses pressure-path check valve mechanism 2k in pressure-path 2h.Pressure-path
Check valve mechanism 2k allows refrigerant gas from lobe space outerpace 2g towards medial chamber 14c
Flowing, and stop the reverse flow of refrigerant gas.And, it is used for configuring pressure-path check-valves
The processing Kong Youshuan 2l closure of mechanism 2k.
The scroll compressor 100 of the present embodiment 2 so constituted is obtained in that and embodiment
1 identical effect, and by arranging pressure-path check valve mechanism 2k also in pressure-path 2h
It is obtained in that following effect.I.e., it is possible to prevent refrigerant gas when rotating forward operating from medial chamber
14c leaks to lobe space outerpace 2g such that it is able to prevent the reduction of compressor efficiency.
It addition, when in pressure-path 2h, pressure-path check valve mechanism 2k being disposed in proximity to
During the place of medial chamber 14c, it is possible to realize the reducing of dead band of discharge chambe 14 such that it is able to enter
One step prevents the reduction of compressor efficiency.Thus, it is preferable to pressure-path check valve mechanism 2k is set
Close proximity to medial chamber 14c's in the limit of the aspect permission being placed at structure and the strength of materials
Place.
As above, the scroll compressor 100 of present embodiment 2 is obtained in that following compressor, its
There is the reliability equal with the scroll compressor 100 shown in embodiment 1 and in hgher efficiency.
Claims (1)
1. a scroll compressor, it is characterised in that possess:
Hermetic container；
Compression mechanical part, it is arranged in described hermetic container and has fixed scroll and pendulum
That moves scroll, described fixed scroll and described swing scroll is respectively arranged at respective seat
Tabular volute tooth in plate portion is mutually combined and forms multiple discharge chambe；
Motor, described compression mechanical part is driven by it；
Main shaft, it is inserted in the way of rotatable via oscillation bearing at described swing vortex
Being arranged at the lobe in the face of the opposition side of described tabular volute tooth in the described seat board portion of part, this is main
Axle rotates, so that described swing scroll carries out oscillating motion by described motor；With
And
Dump valve mechanism, the outlet being arranged at described fixed scroll is covered by it, it is allowed to refrigeration
Agent gas from described discharge chambe via described outlet the inner space towards described hermetic container
Flowing, and stop the reverse flow of refrigerant gas,
Described main shaft has fuel supply path, utilizes this fuel supply path and based in described hermetic container
Pressure reduction between the pressure of the space outerpace of pressure and described lobe, by described hermetic container
Refrigerator oil supplies to the sliding part including described compression mechanical part,
The described seat board portion of described swing scroll has pressure-path, and this pressure-path is by described convex
The space outerpace in the portion of rising is with the medial chamber being positioned at radially inner most in the plurality of discharge chambe even
It is logical,
Described scroll compressor possesses pressure-path check valve mechanism, this pressure-path check-valves machine
Structure is arranged at described pressure-path, it is allowed to refrigerant gas from the space outerpace of described lobe towards
Described medial chamber flows, and stops the reverse flow of refrigerant gas,
When the reversion of described motor operates, refrigerant gas is from the space outerpace of described lobe
Flow to described medial chamber via described pressure-path, because of the space outerpace of described lobe
Pressure reduces and carries out the fuel feeding via described fuel supply path.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JPPCT/JP2015/064803 | 2015-05-22 | ||
| PCT/JP2015/064803 WO2016189598A1 (en) | 2015-05-22 | 2015-05-22 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205638916U true CN205638916U (en) | 2016-10-12 |
Family
ID=57062140
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610258465.6A Active CN106168212B (en) | 2015-05-22 | 2016-04-22 | Scroll compressor having a discharge port |
| CN201620350387.8U Expired - Fee Related CN205638916U (en) | 2015-05-22 | 2016-04-22 | Scroll compressor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610258465.6A Active CN106168212B (en) | 2015-05-22 | 2016-04-22 | Scroll compressor having a discharge port |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6395929B2 (en) |
| CN (2) | CN106168212B (en) |
| WO (1) | WO2016189598A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168212A (en) * | 2015-05-22 | 2016-11-30 | 三菱电机株式会社 | Scroll compressor |
| CN114008324A (en) * | 2019-06-28 | 2022-02-01 | 三菱电机株式会社 | Scroll compressor and refrigeration cycle device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020110097A1 (en) * | 2020-04-09 | 2021-10-14 | OET GmbH | Displacement machine, process, vehicle air conditioner and vehicle |
| CN217300900U (en) * | 2022-04-29 | 2022-08-26 | 罗伯特·博世有限公司 | Movable scroll and scroll compressor |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59115488A (en) * | 1982-12-22 | 1984-07-03 | Hitachi Ltd | Bearing device for enclosed type scroll compressor |
| JPS59123686U (en) * | 1983-02-07 | 1984-08-20 | シャープ株式会社 | scroll compressor |
| JPS6385277A (en) * | 1986-09-29 | 1988-04-15 | Toshiba Corp | Scroll capacity type machinery |
| JPH0246089U (en) * | 1988-09-21 | 1990-03-29 | ||
| JPH0491291U (en) * | 1990-12-20 | 1992-08-10 | ||
| JP4222044B2 (en) * | 2003-02-03 | 2009-02-12 | ダイキン工業株式会社 | Scroll compressor |
| JP4156494B2 (en) * | 2003-11-06 | 2008-09-24 | 株式会社デンソー | Scroll compressor |
| JP5291423B2 (en) * | 2008-10-01 | 2013-09-18 | サンデン株式会社 | Fluid machinery |
| JP4614009B1 (en) * | 2009-09-02 | 2011-01-19 | ダイキン工業株式会社 | Scroll compressor |
| JP2012207655A (en) * | 2011-03-15 | 2012-10-25 | Toyota Industries Corp | Rankine cycle apparatus |
| KR101300261B1 (en) * | 2011-11-09 | 2013-08-23 | 엘지전자 주식회사 | Scroll compressor |
| JP6207828B2 (en) * | 2012-10-31 | 2017-10-04 | 三菱重工業株式会社 | Scroll compressor |
| WO2016189598A1 (en) * | 2015-05-22 | 2016-12-01 | 三菱電機株式会社 | Scroll compressor |
-
2015
- 2015-05-22 WO PCT/JP2015/064803 patent/WO2016189598A1/en active Application Filing
- 2015-05-22 JP JP2017520076A patent/JP6395929B2/en not_active Expired - Fee Related
-
2016
- 2016-04-22 CN CN201610258465.6A patent/CN106168212B/en active Active
- 2016-04-22 CN CN201620350387.8U patent/CN205638916U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168212A (en) * | 2015-05-22 | 2016-11-30 | 三菱电机株式会社 | Scroll compressor |
| CN106168212B (en) * | 2015-05-22 | 2021-01-01 | 三菱电机株式会社 | Scroll compressor having a discharge port |
| CN114008324A (en) * | 2019-06-28 | 2022-02-01 | 三菱电机株式会社 | Scroll compressor and refrigeration cycle device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6395929B2 (en) | 2018-09-26 |
| WO2016189598A1 (en) | 2016-12-01 |
| CN106168212A (en) | 2016-11-30 |
| JPWO2016189598A1 (en) | 2018-01-18 |
| CN106168212B (en) | 2021-01-01 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20200422 |