CN106795881A - Screw compressor and the freezing cycle device of the screw compressor is used - Google Patents
Screw compressor and the freezing cycle device of the screw compressor is used Download PDFInfo
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- CN106795881A CN106795881A CN201580052774.1A CN201580052774A CN106795881A CN 106795881 A CN106795881 A CN 106795881A CN 201580052774 A CN201580052774 A CN 201580052774A CN 106795881 A CN106795881 A CN 106795881A
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- 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
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- 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
- F04C18/0261—Details of the ports, e.g. location, number, geometry
-
- 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
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- 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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
-
- 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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/005—Axial sealings for working fluid
-
- 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
- F04C29/021—Control systems for the circulation of the lubricant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Screw compressor possesses fixed scroll and convolution scroll plate, makes the circumnutation of convolution scroll plate and forms suction chamber and discharge chambe.In addition, possessing：First space, its back side central part for being formed at convolution scroll plate, guiding is stored in the lubricating oil of closed container bottom and turns into the pressure close with discharge pressure；Second space, it is located at the week side of boss more outer than the first space at the back side of convolution scroll plate, as the pressure between discharge pressure and suction pressure；The the first oil leakage outlet for making a part of oil in the first space be spilt to second space；Major part oil in first space is returned into oily path to what the bottom in closed container returned；For the second oil leakage outlet for making the oily part in second space be spilt to suction chamber；And the 3rd oil leakage outlet, it flows to the oil spill in second space and overflows to discharge chambe and adjust the pressure in second space according to the difference of the pressure in the pressure and second space in discharge chambe.
Description
Technical field
The present invention relates to the screw compressor used in freeze cycle and the freeze cycle of the screw compressor is used
Device, more particularly to a kind of screw compressor, it has：The back side central part of convolution scroll plate formed as being pressed with discharge
First space of the close pressure of power；And setting than the outer the week side of boss in the first space as discharge pressure and suction pressure
Between pressure second space.
Background technology
As the screw compressor used in the freezing cycle device of freezing use, idle call etc., with Japanese Unexamined Patent Publication
Screw compressor described in 2011-58439 publications (patent document 1) etc..The patent document 1 describes a kind of scroll compression
Contracting machine, consists of, and possesses：The spiral helicine rolling piece of setting is erect with end plate (platen, panelling) and in the end plate
Fixed scroll and convolution scroll plate；Make the discharge chambe that these fixed scrolls and convolution scroll plate are intermeshed and formed；With
In the bent axle for making above-mentioned convolution scroll plate circumnutation；The back side lug boss of above-mentioned convolution scroll plate is arranged on, for relative
The mode that can in the axial direction move and rotate freely in the cam pin portion of above-mentioned bent axle supports the convolution of above-mentioned convolution scroll plate
Bearing；It is set to the framework of the Stationary side opposed with the rear side of above-mentioned convolution scroll plate；Located at the framework and rotatably
Support the base bearing of above-mentioned bent axle；To the seal member sealed between above-mentioned convolution scroll plate rear side and said frame；
And high pressure hydraulic chamber and the back pressure chamber of outer circumferential side of the inner circumferential side for being formed are divided by the seal member, to above-mentioned hydraulic oil pressure chamber
With the lubricating oil of the roughly equal pressure of discharge pressure so as to substantially maintain discharge pressure, above-mentioned back pressure chamber is maintained than row for supply
Go out the low pressure of pressure, in above-mentioned screw compressor, possess：Oil supply unit, it is in the part opposed with above-mentioned seal member
Convolution scroll plate back part or said frame aperture is set, the aperture crosses with the circumnutation of above-mentioned convolution scroll plate
Said sealing unit and to above-mentioned hydraulic oil pressure chamber side and back pressure chamber side both sides' alternate open, so as to the oil of high pressure hydraulic chamber be supplied
It is given to back pressure chamber side；And oil passage, it is located at above-mentioned convolution scroll plate or said frame, connects above-mentioned high pressure hydraulic chamber and the back of the body
Pressure chamber, back pressure chamber side is supplied to because of pressure difference by the oil of high pressure hydraulic chamber.
In addition, Japanese Unexamined Patent Publication 2005-163655 publications (patent document 2) describes a kind of screw compressor, its tool
It is standby：Non- convolution scroll plate (fixed scroll) with end plate (platen) and the conveyor screw (rolling piece) for erectting setting herein；Tool
There is end plate (panelling) and erect the conveyor screw of setting herein, and engaged with above-mentioned non-convolution scroll plate and carry out circumnutation,
So as to form the convolution scroll plate of suction chamber or discharge chambe between the non-convolution scroll plate；For being assigned to the convolution scroll plate
Give the back pressure chamber of the pressing force to above-mentioned non-convolution scroll plate；It is used to be somebody's turn to do fluid inflow to maintain the pressure of the back pressure chamber
The back pressure chamber fluid of back pressure chamber flows into unit；Fluid for flowing into above-mentioned back pressure chamber flows out to above-mentioned suction chamber or compression
Back pressure chamber fluid outlet unit of room etc..
In addition, the patent document 2 describes following content, above-mentioned back pressure chamber fluid outlet unit is engaging above-mentioned back pressure chamber
With the back of the body that is controlled to front and rear pressure difference is configured with the back pressure chamber fluid stream outlet of above-mentioned suction chamber or discharge chambe in series
Pressure control valve, throttling flow path portion and the intermittent flow intermittently connected by the circumnutation of above-mentioned convolution vortex disk component
Road portion.
And, the screw compressor that Japanese Unexamined Patent Publication 2012-92773 publications (patent document 3) is recorded has：With edge
Plate (platen) and erect the fixed scroll of the vortex rolling piece of setting at this；With the whirlpool that panelling and setting are disposed thereon
Rotation rolling piece, engages with above-mentioned fixed scroll and carries out circumnutation, so as to form pressure between above-mentioned fixed scroll
The convolution scroll plate of contracting room；Apply the back pressure chamber of the attraction to above-mentioned fixed scroll to above-mentioned convolution scroll plate；And to
Above-mentioned back pressure chamber imports the oily oil passage of compressor discharge side, and above-mentioned screw compressor possesses：Discharge chambe access, it possesses
Above-mentioned discharge chambe after starting with above-mentioned back pressure chamber and inclosure is connected, and the counterbalance valve being opened and closed using front and rear pressure difference,
Make the oil of back pressure chamber that the pressure for controlling above-mentioned back pressure chamber is flowed out to discharge chambe；And suction domain access, it is above-mentioned to connect
Back pressure chamber and the inhalation area up to above-mentioned discharge chambe, the mode without being connected with the above-mentioned discharge chambe enclosed after starting are constituted,
The oil of above-mentioned back pressure chamber is supplied to above-mentioned inhalation area.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2011-58439 publications
Patent document 2：Japanese Unexamined Patent Publication 2005-163655 publications
Patent document 3：Japanese Unexamined Patent Publication 2012-92773 publications
The content of the invention
Invent problem to be solved
In above-mentioned patent document 1, it is not considered for following problem, i.e., possesses and be supplied to the oil of high pressure hydraulic chamber
The oil supply unit and oil passage of back pressure chamber side, can adjust the oil mass of pressure chamber inflow of being supported or opposed from high pressure hydraulic chamber, but, it is supplied to
The oil of back pressure chamber is configured to all flow into suction chamber after this, and discharge chambe is flowed to via the suction chamber.Therefore, suction chamber institute
After the fuel delivery for needing is added with the fuel delivery needed for discharge chambe, the oil of substantial amounts of high temperature flows into suction chamber, and suction gas is heated,
Heating loss (suction heating loss) becomes big.
In addition, above-mentioned patent document 2 is not considered for following problem, both, the oil base of bearing portion it had been configured to be supplied to
Back pressure chamber is all flowed into sheet, then, the oil of back pressure chamber all flows to suction chamber, therefore, the pole needed for flowing into bearing to suction chamber
Substantial amounts of oil, according to above-mentioned patent document 1, a greater amount of oil flows into suction chamber, therefore suction gas is heated, and heating loss becomes
Obtain bigger, substantial amounts of oil is also fed into discharge chambe, therefore there is a possibility that to cause oil compression.
And, above-mentioned patent document 3 also in the same manner as above-mentioned patent document 2, is configured to be supplied to the oil base sheet of bearing portion
On all flow into back pressure chamber.In addition, in the patent document 3, in addition to possessing suction domain access, being also equipped with discharge chambe connection
Road, not so as to an oily part for back pressure chamber is supplied directly into discharge chambe not via suction chamber, therefore, from back pressure chamber
Can be fewer than above-mentioned patent document 2 to the quantity delivered of suction chamber.But, the oil for being supplied to bearing portion is substantially all inflow back pressure
Room, therefore, compared to patent document 2, although can make to be reduced to the fuel delivery of suction chamber, it can be difficult to avoiding being flowed into suction chamber
Than the more oil of fuel delivery needed for suction chamber.That is, the fuel delivery needed for bearing portion is more, for needed for suction chamber, discharge chambe
Such as 10 times or so of fuel delivery, but, the oil for being supplied to bearing portion is substantially all inflow back pressure chamber, therefore is not avoided that to suction
The fuel delivery entered the room necessarily becomes many.It is thus impossible to avoid suction gas from being heated and heat loss and become big.In addition, from back pressure chamber
Substantial amounts of oil is supplied to discharge chambe, is confluxed with the oil from suction chamber, therefore, the fuel feeding quantitative change to discharge chambe is more, exists and causes
The possibility of oil compression, this is identical with above-mentioned patent document 2, and these problems are not accounted for.
It is an object of the invention to obtain that the fuel delivery to bearing portion, the fuel delivery to suction chamber can be controlled and to pressure
The fuel delivery of contracting room each and realize the screw compressor of suitable amount respectively and used the freezing of the screw compressor
EGR.
Scheme for solving problem
To achieve these goals, the present invention be a kind of screw compressor, possess platen erect be provided with it is spiral helicine
The fixed scroll of rolling piece and with erectting the spiral helicine rolling piece that sets in panelling and engage with above-mentioned fixed scroll
And the convolution scroll plate of circumnutation is carried out, and be configured to, by making above-mentioned convolution scroll plate relative to above-mentioned fixed scroll
Disk carries out circumnutation so as to form suction chamber and discharge chambe, and above-mentioned screw compressor is characterised by possessing：First space,
Its back side central part for being formed at above-mentioned convolution scroll plate, guiding is stored in the lubricating oil of closed container bottom and turns into and discharge
The close pressure of pressure；Second space, it is located at than the above-mentioned outer the week side of boss in first space at the back side of above-mentioned convolution scroll plate, into
It is the pressure between discharge pressure and suction pressure；Make what a part of oil in above-mentioned first space spilt to above-mentioned second space
First oil leakage outlet；Major part oil in above-mentioned first space is returned into oily path to what the bottom in closed container returned；For
The the second oil leakage outlet for making the oily part in above-mentioned second space be spilt to above-mentioned suction chamber；And the 3rd oil leakage outlet,
It makes the oil spill in above-mentioned second space flow to compression according to the difference of the pressure in the pressure in discharge chambe and above-mentioned second space
Room adjusts the pressure in above-mentioned second space.
Further feature of the invention is a kind of freezing cycle device, and it is used for refrigerating and air conditioning, above-mentioned freezing cycle device
Constituted using the screw compressor for constituting as described above.
Invention effect
According to the present invention, have the following effects that, can access and can control fuel delivery to bearing portion, to suction chamber
Fuel delivery and to discharge chambe fuel delivery each and realize the screw compressor of suitable amount respectively and used the whirlpool
Revolve the freezing cycle device of compressor.
Brief description of the drawings
Fig. 1 is the longitudinal section of the embodiment 1 for representing screw compressor of the invention.
Fig. 2 is the figure for representing the state in the fixed scroll and convolution scroll plate engagement shown in Fig. 1, is from Fig. 1
The figure of II-II directions observation.
Fig. 3 is the stereogram of the convolution scroll plate shown in Fig. 1 viewed from above.
Fig. 4 is the amplification view on the counterbalance valve periphery of the screw compressor shown in Fig. 1.
Fig. 5 is the figure of other for illustrating convolution scroll plate, is the stereogram suitable with Fig. 2.
Fig. 6 is the figure of the embodiment 2 for illustrating screw compressor of the invention, is the figure suitable with Fig. 4.
Fig. 7 is the figure for illustrating embodiments of the invention 3, is the example for representing the freezing cycle device for having used screw compressor
Freeze cycle structure chart.
Specific embodiment
Hereinafter, using accompanying drawing, specific embodiment of the invention is illustrated.Additionally, in the various figures, being labeled with identical
The part of symbol represents same or equivalent part.
Embodiment 1
Using Fig. 1~Fig. 5, the embodiment 1 to screw compressor of the invention is illustrated.Fig. 1 is to represent of the invention
The longitudinal section of the embodiment 1 of screw compressor, Fig. 2 is in representing fixed scroll shown in Fig. 1 and convolution scroll plate engagement
State figure, be the figure observed from the II-II directions of Fig. 1, Fig. 3 is standing for the convolution scroll plate shown in Fig. 1 viewed from above
Body figure, Fig. 4 is the amplification view on the counterbalance valve periphery of the screw compressor shown in Fig. 1, Fig. 5 be illustrate to circle round scroll plate its
The figure of its example, is the stereogram suitable with Fig. 3.
First, according to Fig. 1, the overall structure to the screw compressor of the present embodiment is illustrated.
Screw compressor 1 is received compression mechanical part 2 and the grade of motor part 16 and is constituted in housing (closed container) 9.
In compression mechanism section 2, convolution scroll plate 8 is engaged and shape with the fixed scroll 7 fixed in framework 17
Into discharge chambe 13, using the rotation in said motor portion 16, the above-mentioned convolution of convolution scroll plate 8 fortune is made via bent axle (rotary shaft) 10
It is dynamic, so that the volume of above-mentioned discharge chambe 13 reduces, it is compressed action.
With the compressed action, working fluid, the work for being sucked are sucked from suction inlet 14 to suction chamber 20 (reference picture 3)
Fluid is discharged to the discharge space 54 in housing 9 from outlet 15 via the compression travel of discharge chambe 13.It is discharged to the discharge
The working fluid in space 54 by the path that is formed in the periphery of the periphery of above-mentioned fixed scroll 7 and said frame 17 (not
Diagram) and motor chamber 52 is flowed to, then, it is discharged to outside housing 9 from discharge pipe 6.
Above-mentioned fixed scroll 7 possesses：Discoideus platen 7a；The rolling piece of platen 7a is stood up in the shape of a spiral
7b；Positioned at the outer circumferential side of above-mentioned platen 7a, it is cylindrical in shape and is set to that there is the height roughly the same with the front end face of above-mentioned rolling piece 7b
The paneling 7e of degree and surround the supporting part 7d of rolling piece 7b.Setting be provided with above-mentioned rolling piece 7b platen 7a surface because
Between rolling piece 7b, so being referred to as tooth root 7c.
The sliding surface that above-mentioned paneling 7e is contacted for the supporting part 7d of fixed scroll 7 with the panelling 8a of convolution scroll plate 8.
Above-mentioned supporting part 7d is fixed on said frame 17 by fixed scroll 7 by bolt etc., and joined integrally with fixed scroll 7 is upper
State framework 17 and above-mentioned housing 9 is fixed on by fixed solutions such as welding.
Above-mentioned convolution scroll plate 8 is opposed to configuration, the rolling piece 7b of fixed scroll 7 and convolution whirlpool with fixed scroll 7
The rolling piece 8b engagements of capstan 8 such that it is able to be rotatably provided with framework 17.The convolution scroll plate 8 has from discoideus edge
The surface of plate 8a is that tooth root 8c erects the spiral helicine rolling piece 8b and the back side center time located at above-mentioned panelling 8a for setting
Rotation lug boss (lug boss) 8d.In addition, the surface contacted with above-mentioned fixed scroll 7 of the peripheral part of above-mentioned panelling 8a turns into back
The paneling 8e of vortex capstan 8.
The leading section (rolling piece tooth top) of the rolling piece 8b of above-mentioned convolution scroll plate 8 is configured to and above-mentioned fixed scroll 7
Tooth root 7c there is minim gap and relative.Similarly, the leading section (rolling piece tooth top) of the rolling piece 7b of fixed scroll 7
It is configured to there is minim gap and relative with the tooth root 8c of above-mentioned convolution scroll plate 8.
The bottom of the above-mentioned housing 9 constructed in the closed container for being accommodated with compression mechanism section 2 and the grade of motor part 16 sets
There is the oil storage tank 53 of storage lubricating oil (refrigerator oil).Said motor portion 16 is made up of rotor 16a and stator 16b, at above-mentioned turn
Sub- 16a is integrally fixed with bent axle 10.The bent axle 10 is rotatably supported in said frame 17 via base bearing 5, with fixation
The central axis coaxial of scroll plate 7.
The crank portion 10a of bias is provided with the front end of above-mentioned bent axle 10, crank portion 10a insertions are arranged on above-mentioned convolution whirlpool
The convolution bearing 11 of the convolution lug boss 8d of capstan 8, above-mentioned convolution scroll plate 8 is configured to, with the rotation of bent axle 10, to return
Rotation.
The central axis of above-mentioned convolution scroll plate 8 turns into eccentric relative to the central axis of above-mentioned fixed scroll 7 predetermined
The state of distance.In addition, the rolling piece 8b of convolution scroll plate 8 staggers in the circumferential relative to the rolling piece 7b of fixed scroll 7
Predetermined angular (generally 180 degree) and overlap.
Reference 12 is euclidean Ring, and it is used for while constraining above-mentioned convolution scroll plate 8 makes it relative to above-mentioned fixed whirlpool
Capstan 7 does not carry out rotation, while making it relatively carry out circumnutation.
Fig. 2 is the figure for illustrating the state in above-mentioned fixed scroll 7 and the convolution engagement of scroll plate 8, is the II-II from Fig. 1
The figure of direction observation, therefore, for convolution scroll plate 8, convolution scroll plate rolling piece 8b is shown with section, it is (auxiliary with two chain-dotted lines
Index contour) part suitable with the periphery of the panelling 8a of convolution scroll plate 8 is shown.
As shown in Fig. 2 forming many of crescent shape between fixed scroll rolling piece 7b and convolution scroll plate rolling piece 8b
Individual discharge chambe 13 (convolution interior lines side compression room 13a, convolution outside line side compression room 13b), when making the circumnutation of convolution scroll plate 8
When, each discharge chambe 13 is moved with to the direction of central portion, and its volume continuously reduces.
Reference 20 is suction chamber, is the space of the midway for sucking fluid.The phase of the circumnutation of scroll plate 8 of circling round
Advance, after the moment of the inclosure for completing fluid, the suction chamber 20 turns into discharge chambe 13.
As shown in Figures 1 and 2, above-mentioned suction inlet 14 is located at fixed scroll 7.The suction inlet 14 with above-mentioned suction chamber 20
The mode of connection is disposed through the outer circumferential side of the platen 7a of fixed scroll 7.
Above-mentioned outlet 15 is disposed through above-mentioned fixed scroll 7 in the way of the discharge chambe 13 with most inner circumferential side is connected
Platen 7a spiral center near.
When above-mentioned bent axle 10 is rotated by the said motor portion 16 shown in Fig. 1, above-mentioned convolution scroll plate 8 is with above-mentioned solid
Centered on the central axis of determine vortex disk 7, circumnutation is carried out with predetermined radius of gyration.Thus, in above-mentioned each discharge chambe 13
Inside compress successively sucked from above-mentioned suction inlet 14 working fluid, for example, the refrigerant gas being circulated in freeze cycle
(below, also referred to as fluid), the working fluid after compression is discharged to above-mentioned discharge space 54 from above-mentioned outlet 15, as above institute
Ground is stated, such as freeze cycle outside compressor is supplied to from above-mentioned discharge pipe 6.
Displacement type or centrifugal oil feed pump 21 are provided with the lower end of above-mentioned bent axle 10, with the rotation of above-mentioned bent axle 10,
Above-mentioned oil feed pump 21 is also rotated, and the oil storage tank in the bottom of above-mentioned housing 9 is sucked from the lubrication through oil hole 22a of fuel feeding pump case 22
Lubricating oil stored by 53, and discharged from the outlet 21a of above-mentioned oil feed pump 21.The lubricating oil discharged is by above-mentioned bent axle
The through holes (oil supplying hole) 3 that are formed in the axial direction in 10 and to empty in the convolution lug boss 8d of the upper end of above-mentioned crank portion 10a
Between convey.
Additionally, a part for the lubricating oil flowed in above-mentioned through hole 3 is via in the cross-drilled hole 24 set by above-mentioned bent axle 10
And supplementary bearing 23 is transported to, and after being lubricated to the supplementary bearing 23, return to the above-mentioned oil storage tank 53 of the bottom of housing 9.Upper
State through hole 3 flowing another most lubricating oil reach above-mentioned crank portion 10a upper end above-mentioned convolution lug boss space,
Above-mentioned convolution bearing 11 is lubricated after by the oil groove 57 set by the outer peripheral face in above-mentioned crank portion 10a.Then, should
Lubricating oil to after the above-mentioned base bearing 5 set by the bottom of above-mentioned convolution bearing 11 is lubricated, by by outage 26a
And oil exit pipe 26b constitute returning oily path 26 and returning to the above-mentioned oil storage tank 53 of the bottom of housing 9.
Here, space and storage in the above-mentioned convolution lug boss that will be formed by above-mentioned oil groove 57 and the above-mentioned grade of convolution bearing 11
Above-mentioned base bearing 5 space (as framework 17, bent axle 10, frame seal 56, in convolution lug boss 8d set by flange part 34
And the space of the formation of seal member 32) turn into the first space 33 altogether.First space 33 has close with discharge pressure
Pressure.
The lubricating oil for being flowed into above-mentioned first space 33 due to lubricating above-mentioned base bearing 5 and above-mentioned convolution bearing 11 it is big
Part returns to the above-mentioned oil storage tank 53 of the bottom of housing 9 by above-mentioned outage 26a and above-mentioned oil exit pipe 26b (returning oily path).
In addition, one of above-mentioned lubricating oil via the above-mentioned flange in the upper surface of above-mentioned seal member 32 and above-mentioned convolution lug boss 8d
The first set oil leakage outlet between the end face of portion 34 and flow into the lubrication of above-mentioned euclidean Ring 12, above-mentioned fixed whirlpool to back pressure chamber 18
The sealing of the lubrication and the above-mentioned front space of each rolling piece 7b, 8b of the sliding part between capstan 7 and convolution scroll plate 8 etc.
Amount needed for (closed), above-mentioned back pressure chamber 18 is provided at than the outer the week side of boss in above-mentioned first space 33 and as discharge pressure and suction
The second space of the pressure between pressure.
Above-mentioned seal member 32 is together located in said frame 17 and above-mentioned flange part 34 with waved spring (not shown)
Annular groove 31 set by opposed face, separates above-mentioned first space 33 as discharge pressure and as suction pressure and discharge
The above-mentioned back pressure chamber (second space) 18 of the pressure between pressure.
One or more of above-mentioned first oil leakage outlet for example as set by the above-mentioned flange part 34 in convolution lug boss 8d
Slit 60 (groove) and above-mentioned seal member 32 long are constituted in the radial direction, and above-mentioned slit 60 is with by above-mentioned convolution scroll plate
8 circumnutation and the mode of intermittently crossing above-mentioned seal member 32 are configured, and are thus configured to intermittently connect above-mentioned
First space 33 and above-mentioned back pressure chamber 18.
Thus, using above-mentioned first space 33 and the pressure differential of above-mentioned back pressure chamber 18, oil from above-mentioned first space can be made
33 flow into via the above-mentioned slit 60 as minim gap to above-mentioned back pressure chamber 18.
Additionally, the configuration of above-mentioned slit 60 is not limited to be configured to the circumnutation of convolution scroll plate 8 intermittently
Cross above-mentioned seal member 32, it is also possible to cross seal member 32 all the time.
In addition, replacing above-mentioned slit 60, and it is configured to, one or many is set in the above-mentioned flange part 34 of convolution lug boss
Individual, the i.e. more than one hole (for example, groove of circle) as oil storage tank, the hole is with the circumnutation of convolution scroll plate 8
Cross the circular motion of above-mentioned seal member 32.Thus, above-mentioned hole is between above-mentioned first space 33 and above-mentioned back pressure chamber 18
It is mobile, the lubricating oil in above-mentioned first space 33 is stored in the hole, can indirectly shift and be discharged to above-mentioned back pressure chamber 18, energy
The enough oil supplied to back pressure chamber 18 in first space 33.So constituting above-mentioned first oil leakage outlet can also.
In the present embodiment, the part for being flowed into the lubricating oil of above-mentioned back pressure chamber 18 goes out with via the second oil leakage described later
Road and the mode that flows into above-mentioned suction chamber 20 are constituted, and rolling piece sliding surface, rolling piece front space etc. are lubricated, and
For the sealing waited between discharge chambe.
In addition, the remainder for for example arriving the lubricating oil of above-mentioned back pressure chamber 18 flows with via the 3rd oil leakage outlet described later
The mode for entering above-mentioned discharge chambe 13 is constituted, and rolling piece sliding surface, rolling piece front space to discharge chambe etc. are lubricated, and
The sealing waited between being also used for discharge chambe.
So, in the present embodiment, it is possible to from above-mentioned first space 33 via above-mentioned first oil leakage outlet to above-mentioned
Needed for the sealing that two spaces (back pressure chamber) 18 spill between lubrication, the discharge chambe of rolling piece sliding surface, rolling piece front space etc. etc.
Amount lubricating oil, remaining lubricating oil after being lubricated to each bearing portion pass through by above-mentioned outage 26a and oil exit pipe 26b
Return to oil storage tank 53.Therefore, in the present embodiment, it is possible to fuel delivery needed for independently controlling the lubrication of each bearing portion and support or oppose
The fuel delivery of pressure chamber 18.Therefore, it is possible to make to reach required Min. to the fuel delivery of back pressure chamber 18.
In addition, the lubricating oil for being flowed into above-mentioned back pressure chamber 18 can be supplied via above-mentioned second oil leakage outlet to suction chamber 20
To required fuel delivery, remaining lubricating oil is supplied to discharge chambe 13 via above-mentioned 3rd oil leakage outlet.Therefore, it is possible to make to
Suction chamber 20 and required Min. is respectively reached to the fuel delivery of discharge chambe 13, therefore, it is possible to make in above-mentioned suction chamber 20
Suction heating loss reaches Min., in addition, being prevented from because caused by the oily oversupply in above-mentioned discharge chambe 13
Oil compression, heating loss etc., therefore, it is possible to realize the screw compressor of high efficiency and high reliability.
Next, using Fig. 2 and Fig. 3, the structure to above-mentioned second oil leakage outlet is illustrated.
As shown in figure 3,64 are provided at the paneling 8e of convolution scroll plate 8, as the oilhole (groove) of oil storage tank, such as Fig. 2 institutes
Show, with the circumnutation of convolution scroll plate 8, the track 65 shown in depiction 2 indirectly connects back pressure chamber to the oilhole 64
(second space) 18 and the groove portion 66 connected with suction chamber 20.
In the state of above-mentioned oilhole 64 is connected with back pressure chamber 18, (pressure is that discharge pressure is pressed with suction in back pressure chamber 18
The pressure of the centre of power) oil be stored in above-mentioned oilhole 64.In addition, when above-mentioned oilhole 64 is with the convolution of convolution scroll plate 8
Motion and when connect with above-mentioned groove portion 66 (pressure is suction pressure), the oil in above-mentioned oilhole 64 be under pressure differ from and via above-mentioned
Groove portion 66 imports above-mentioned suction chamber 20.
By repeating the effect, the oil in above-mentioned back pressure chamber 18 is transferred to suction chamber 20 successively.By adjusting above-mentioned oil
The volume in hole 64, number, can arbitrarily adjust the fuel delivery from above-mentioned back pressure chamber 18 to above-mentioned suction chamber 20.
Next, using Fig. 1, Fig. 2 and Fig. 4, the structure to above-mentioned 3rd oil leakage outlet is illustrated.
First, the function to above-mentioned back pressure chamber (second space) 18 is illustrated.In screw compressor 1, due to its pressure
Contracting is acted on, and generation makes fixed scroll 7 and convolution scroll plate 8 axial power (separating force) disconnected from each other.Due to the axial direction
Power, when the disengaging that above-mentioned two scroll plate separated, produced so-called convolution scroll plate 8 manifests, the seal of discharge chambe 13 is deteriorated,
Compression efficiency reduction.
Here, in the panelling 8a rear sides pressure that is set between discharge pressure and suction pressure of convolution scroll plate 8
Back pressure chamber 18, above-mentioned separating force is offset by the pressure (back pressure) of the back pressure chamber 18, and pressed to fixed scroll 7 and circle round
Scroll plate 8.If pressing force now is excessive, the cunning of the paneling 8e of scroll plate 8 of the circling round and paneling 7e of fixed scroll 7
Dynamic loss increase, compressor efficiency reduction.
That is, if above-mentioned back pressure is present, optimal value is too small, and the seal of discharge chambe is deteriorated, and hot fluid loss increases
Greatly, if excessive, loss increase is slided.Therefore, in high performance, high reliability in compressor, back pressure is maintained most
Good value is important.
In order to obtain optimal back pressure value, as shown in figure 1, in the screw compressor of the present embodiment, in above-mentioned fixed whirlpool
The supporting part 7d of capstan 7 possesses above-mentioned 3rd oil leakage outlet (discharge chambe access), and the above-mentioned 3rd oil leakage outlet has to be used for
Adjust the counterbalance valve 61 of the back pressure of above-mentioned back pressure chamber 18.
The enlarged drawing i.e. Fig. 4 being indicated using the structure to the periphery of counterbalance valve 61 in Fig. 1, is gone out to above-mentioned 3rd oil leakage
The structure on road is described in detail.
Above-mentioned 3rd oil leakage outlet (discharge chambe access) includes：Connect the back of the body of above-mentioned back pressure chamber 18 and above-mentioned counterbalance valve 61
Pressure valve flows into road (space communicated with back pressure chamber 18) 62a；Connect the counterbalance valve stream of above-mentioned counterbalance valve 61 and above-mentioned discharge chambe 13
Outlet (space communicated with discharge chambe 13) 62c；And it is accommodated with the space 62b of above-mentioned counterbalance valve 61.Above-mentioned counterbalance valve 61 with
The mode for separating above-mentioned counterbalance valve inflow road 62a and above-mentioned counterbalance valve outflow road 62c is configured with valve 61a.Valve 61a be set to by
The spring 61b for being fixed on locating part 61 is pressed to the opening portion that above-mentioned counterbalance valve flows into road 62a.
Pressure, the i.e. back pressure flowed into the 62a of road in above-mentioned counterbalance valve is imported than flowing out road 62c via above-mentioned counterbalance valve
The total of pressure, the i.e. pressure of discharge chambe and the pressure corresponding with the pressing force of spring 61b in above-mentioned space 62b feelings high
Under condition, above-mentioned valve 61a is moved upward, and above-mentioned counterbalance valve is flowed into road 62a and is connected with above-mentioned counterbalance valve outflow road 62c.Also
It is in the case that pressure ratio value of the above-mentioned counterbalance valve 61 in back pressure chamber 18 is high, to overflow to the fluid in the back pressure chamber 18
Above-mentioned discharge chambe 13, desired value is adjusted to by the back pressure of above-mentioned back pressure chamber 18.
The oil flowed into above-mentioned discharge chambe 13 is lubricated to rolling piece sliding surface, rolling piece front space etc., and
For the sealing waited between discharge chambe, then, discharge space 54 is discharged to from above-mentioned outlet 15.Oily a part of example of the discharge
Together discharged from above-mentioned discharge pipe 6 to freeze cycle such as with refrigerant gas, it is remaining then to divide with refrigerant gas in housing 9
From and be reserving at the above-mentioned oil storage tank 53 at housing bottom.
In the existing screw compressor described in above-mentioned patent document 2, patent document 3, to above-mentioned first space, i.e. axle
The lubricating oil of bearing portion oil is substantially all to flow into back pressure chamber 18, then flows to suction chamber 20 and discharge chambe 13.Therefore, to
The fuel delivery of suction chamber 20 is excessive, and the fuel delivery to discharge chambe 13 is also excessive, due to the lubricating oil of high temperature, refrigerant be heated and
Expansion, sucks heating loss increase, and can be attracted to the refrigerant amount of suction chamber 20 and also reduce, therefore volumetric efficiency drops
It is low.In addition, substantially all flowed into discharge chambe 13 to the lubricating oil of bearing portion oil, therefore, produce the increasing of heating loss
Greatly and because of the increase of compression power caused by oil compression.
On the other hand, in above-mentioned patent document 1, although can independently control the fuel delivery to back pressure chamber 18, but,
In order to loss is heated in the suction suppressed in suction chamber, when the lubricants capacity to the inflow of back pressure chamber 18 is suppressed, it is impossible to discharge chambe
13 fully supply, the obturation effect reduction produced by oil of discharge chambe 13, therefore leakage loss increases.
That is, the lubricating oil of suitable amount can not be supplied respectively to suction chamber 20 and compressor 13 at present.
In this regard, the present embodiment using above-mentioned first oil leakage outlet can independently control to each bearing portion fuel delivery and to
The fuel delivery of back pressure chamber, in addition, using the second oil leakage outlet, independently controlling the fuel feeding supplied from back pressure chamber 18 to suction chamber 20
Amount, is also equipped with the 3rd oil leakage outlet, from back pressure chamber 18 via counterbalance valve 61 to the fuel feeding of discharge chambe 13 completed after suction process,
Therefore, it is possible to suitably adjust the fuel delivery of each to each bearing portion, suction chamber 20 and discharge chambe 13.
Additionally, in the present embodiment, above-mentioned counterbalance valve outflow road 62c starts the compression after compression with suction process is completed
Room 13 connects.That is, the discharge chambe 13 is the discharge chambe for completing the compression midway after suction process, is the pressure isolated with suction chamber 20
Contracting room.In addition, as shown in Fig. 2 above-mentioned counterbalance valve outflow road 62c is positioned at outer with convolution by the circumnutation of scroll plate of circling round
The position of line room 13b and convolution interior lines room 13a both sides' alternate communication.
Additionally, the reference 63 shown in Fig. 4 is steady pin, blocked to set counterbalance valve outflow road 62c for closed
And the end of the cross-drilled hole for being formed.
In the present embodiment, due to being provided with the 3rd oil leakage outlet with above-mentioned counterbalance valve 61, therefore, it is possible to by back pressure chamber
Oil in 18 is supplied directly to discharge chambe 13 not via suction chamber 20 via above-mentioned counterbalance valve 61.To the fuel feeding of the discharge chambe 13
Amount is fuel delivery from from above-mentioned first space 33 to above-mentioned back pressure chamber 18 based on above-mentioned first oil leakage outlet and based on above-mentioned
Two oil leakage outlets from above-mentioned back pressure chamber 18 to the difference of the fuel delivery of suction chamber 20.I.e., although go out list via above-mentioned first oil leakage
Unit and supply oil from the first space 33 to above-mentioned back pressure chamber 18, but, to suction chamber import in the oil by the second oil leakage outlet
The amount of decision, remaining oil imports discharge chambe 13.
Therefore, by adjusting the fuel delivery of each of above-mentioned first oil leakage outlet and the second oil leakage outlet, can by
The fuel delivery of suction chamber and the fuel delivery to discharge chambe are controlled as suitable amount.
Typically, the fuel delivery needed for the sealing of discharge chambe 13 is more than fuel delivery needed for the sealing of suction chamber, therefore, example
Such as, in above-mentioned patent document 1, in the fuel delivery needed for the sealing that the fuel delivery of the first oil leakage outlet is set as into discharge chambe
In the case of, the over feeding in suction chamber 20, suction heating loss increase.Conversely, being set by the fuel delivery of the first oil leakage outlet
In the case of less fuel delivery needed for being set to the sealing of suction chamber 20, fuel feeding is not enough in discharge chambe, by the close of oil generation
Close effect reduction, leakage loss increase.
In this regard, the present embodiment can supply appropriate oil to each of suction chamber and discharge chambe, therefore, it is special compared to above-mentioned
Sharp document 1, can reduce suction heating loss, leakage loss.
And, counterbalance valve outflow road 62c be formed at by the circumnutation of scroll plate of circling round with above-mentioned convolution outside line room
The position of 13b and above-mentioned convolution interior lines room 13a both sides' alternate communication, therefore, it is possible to supply oil to the discharge chambe of both sides, can keep away
Exempt from the not enough problem of the fuel feeding of any discharge chambe 13.
In addition, setting each fuel delivery, make the fuel delivery based on the first oil leakage outlet than the fuel feeding based on the second oil leakage outlet
Amount is more such that it is able to the difference of the fuel delivery of the first oil leakage outlet and the second oil leakage outlet is supplied to discharge chambe 13, therefore, it is possible to can
Ensure the fuel delivery to discharge chambe 13 by ground.
And, if as working fluid, the refrigerant bigger than 1.09 using high temperature, adiabatic exponent is easily made into, for example
Application the present embodiment in the screw compressor of R32 etc., then can further reduce suction heating loss, can obtain in hgher efficiency
Screw compressor.
Additionally, in the above-described embodiment, as shown in figure 3, to setting circular oil in the paneling 8e of convolution scroll plate 8
Hole (groove) 64 is illustrated constituting the example of above-mentioned second oil leakage outlet, but not limited to this.I.e., it is also possible to be configured to, such as
Shown in Fig. 5, replace above-mentioned oilhole 64 and be made the slit (groove) 67 of depth as shallow, the slit 67 all the time or off and on back pressure chamber
18 and the groove portion 66 that is connected with suction chamber 20 connect, using pressure differential, the oil of back pressure chamber 18 is imported into suction chamber 20.The situation
Under, fuel delivery can be controlled by adjusting depth, width, length or the number etc. of above-mentioned slit.
Embodiment 2
Using Fig. 6, the embodiment 2 to screw compressor of the invention is illustrated.Fig. 6 is suitable with above-mentioned Fig. 4
Figure, in the Fig. 6, is labelled with and represents same or equivalent part with the part of above-mentioned Fig. 1~Fig. 5 identical symbols.
In the present embodiment 2, also in the same manner as the above embodiments 1, by above-mentioned first oil leakage outlet, can be independently
The fuel delivery to each bearing portion and the fuel delivery to back pressure chamber are controlled, in addition, by the second oil leakage outlet, can independently control
The fuel delivery supplied from back pressure chamber 18 to suction chamber 20.But, in the present embodiment 2, do not possess it is shown in Fig. 4, from back pressure chamber
18 via counterbalance valve 61 to the 3rd oil leakage outlet of the fuel feeding of discharge chambe 13.The above-mentioned 3rd oil leakage outlet of the present embodiment 2 is unworthy of
It is standby in the supporting part 7d of fixed scroll 7, and as illustrated in fig. 6, by the back pressure hole formed in the panelling 8a of convolution scroll plate 8
68 and constitute.
After above-mentioned back pressure hole 68 is configured to start compression connect back pressure chamber (second space) 18 and to complete suction process
Discharge chambe 13 mode be located at above-mentioned convolution scroll plate panelling 8a.That is, above-mentioned back pressure hole 68 is located at and is only communicated in and suction chamber
The position of the discharge chambe 13 of 20 isolation.By the back pressure hole 68, the pressure in above-mentioned back pressure chamber 18 can be maintained close to pressure
The value of the average pressure in contracting room 13.
As described above, possessing above-mentioned first oil leakage outlet, above-mentioned second oil leakage outlet and (the 3rd oil of above-mentioned back pressure hole 68
Spill road), so as in the same manner as above-described embodiment 1, can suitably adjust to each bearing portion, suction chamber 20 and discharge chambe 13
The fuel delivery of each.
Each embodiment according to the present invention as described hereinbefore, can control the fuel delivery to bearing portion, the confession to suction chamber
Oil mass and to discharge chambe fuel delivery each, the fuel feeding of suitable amount is realized respectively, realize small efficient of loss
Screw compressor.Additionally, typically containing refrigerant from the above-mentioned first~the 3rd oil leakage outlet oil spill (lubricating oil), but
It is that the mixture containing refrigerant in oil is also served as oil to illustrate by the present invention.
Embodiment 3
According to Fig. 7, embodiments of the invention 3 are illustrated.Fig. 7 is to represent to have used above-mentioned scroll compression of the invention
The freeze cycle structure chart of of the freezing air conditioner freezing cycle device of contracting machine.
In the present embodiment, according to Fig. 7, to being applied to be said as the example of the situation of the air conditioner of freezing cycle device
It is bright.In the figure 7, reference 1 is screw compressor, and 43 is four-way valve, and 40 is that outdoor heat exchanger (turns into during cooling operation
Condenser, turns into evaporator during heating operation), 41 is the expansion valve being made up of electric expansion valve etc., and 42 is indoor heat exchange
Device (turns into evaporator, condenser is turned into during heating operation) during cooling operation, these equipment are sequentially connected by refrigerant piping,
Constitute the freeze cycle of air conditioner.In the present embodiment, above-mentioned screw compressor 1 uses the vortex described in the various embodiments described above
Any one of compressor.
The screw compressor described in any embodiment of the invention stated is loaded onto to the air-conditioner set shown in the Fig. 7, from
And the running efficiency of air conditioner can be greatly improved, and the annual energy resource consumption efficiency (APF) of air conditioner can be greatly improved, can
Obtain the air conditioner (freezing cycle device) that annual power consumption is low and operating range is big, availability is good.
Additionally, in the present embodiment 3, to being applied to outdoor heat exchanger 40 for one, indoor side heat exchanger 42 are
The situation of the air conditioner of is illustrated, but can also be equally applicable to above-mentioned indoor side heat exchanger 42 for many
Multiple-connecting air conditioner etc., and can similarly be applied to the freezing cycle devices such as refrigeration special air conditioner, refrigerator.
As mentioned above, each embodiment of the invention, can make fuel delivery to bearing portion, to back pressure chamber
Fuel delivery, the fuel delivery to suction chamber, the fuel delivery to discharge chambe respectively become the suitable fuel delivery of required amount, therefore energy
The freezing cycle device of the screw compressor for accessing efficiency high and the freezing air conditioner for having used the screw compressor.
Additionally, this invention is not limited to the above embodiments, contain various modifications example.
In addition, the above embodiments are for ease of understanding to illustrate example that is of the invention and explaining, not limit
Due to must possess illustrated all of structure.And, for a part for the structure of each embodiment, other knots can be carried out
The additional of structure, deletion, displacement.
Symbol description
1-screw compressor, 2-compression mechanical part, 3-through hole (oil supplying hole), 5-base bearing, 6-discharge pipe, 7-
Fixed scroll, 7a-platen, 7b-rolling piece, 7c-tooth root, 7d-supporting part, 7e-paneling, 8-convolution scroll plate,
8a-panelling, 8b-rolling piece, 8c-tooth root, 8d-convolution lug boss (lug boss), 8e-paneling, 9-housing (closed appearance
Device), 10-bent axle (rotary shaft), 10a-crank portion, 11-convolution bearing, 12-euclidean Ring, 13-discharge chambe, 13a-convolution
Interior lines side compression room, 13b-convolution outside line side compression room, 14-suction inlet, 15-outlet, 16-motor part, 16a-turn
Son, 16b-stator, 17-framework, 18-back pressure chamber, 20-suction chamber, 21-oil feed pump, 21a-fuel feeding pump discharge, 22-
Fuel feeding pump case, 22a-lubrication through oil hole, 23-supplementary bearing, 24-cross-drilled hole, 26-return oily path (26a-outage,
26b-oil exit pipe), 31-annular groove, 32-seal member, the 33-the first space, 34-flange part, Re Jiao Change on the outside of 40-Shi
Device, 41-expansion valve, 42-Shi inner sides Re Jiao Change devices, 43-four-way valve, 52-motor chamber, 53-oil storage tank, 54-discharge is empty
Between, 56-frame seal, 57-oil groove, 60-slit (groove), 61-counterbalance valve, 61a-valve, 61b-spring, 61c-limit
Position part, 62a-counterbalance valve inflow road, 62b-space, 62c-counterbalance valve outflow road, 63-steady pin, 64-oilhole (groove),
The track of 65-oilhole, 66-groove portion, 67-slit (groove), 68-back pressure hole.
Claims (12)
1. a kind of screw compressor, possesses the fixed scroll and tool that spiral helicine lapping plate rolling piece is provided with platen setting
There is the spiral helicine lapping plate rolling piece in cover plate setting setting and engaged with above-mentioned fixed scroll and carry out circumnutation
Convolution scroll plate, and is configured to, by make above-mentioned convolution scroll plate relative to above-mentioned fixed scroll carry out circumnutation from
And suction chamber and discharge chambe are formed,
Above-mentioned screw compressor is characterised by possessing：
First space, its back side central part for being formed at above-mentioned convolution scroll plate, guiding is stored in the lubrication of closed container bottom
Oil and turn into the pressure close with discharge pressure；
Second space, it is located at than the above-mentioned outer the week side of boss in first space at the back side of above-mentioned convolution scroll plate, as discharge pressure
Pressure between suction pressure；
The the first oil leakage outlet for making a part of oil in above-mentioned first space be spilt to above-mentioned second space；
Major part oil in above-mentioned first space is returned into oily path to what the bottom in closed container returned；
For the second oil leakage outlet for making the oily part in above-mentioned second space be spilt to above-mentioned suction chamber；And
3rd oil leakage outlet, it makes above-mentioned second sky according to the difference of the pressure in the pressure in discharge chambe and above-mentioned second space
Interior oil spill flows to and overflows to discharge chambe and adjust the pressure in above-mentioned second space.
2. screw compressor according to claim 1, it is characterised in that
Above-mentioned 3rd oil leakage outlet is located at above-mentioned fixed scroll, possesses according in the pressure in discharge chambe and above-mentioned second space
Pressure difference and the counterbalance valve that is opened and closed, come in the way of flowing to the oil spill in above-mentioned second space and overflowing to discharge chambe
Adjust the pressure in above-mentioned second space.
3. screw compressor according to claim 2, it is characterised in that
Above-mentioned 3rd oil leakage outlet possesses：The counterbalance valve for making above-mentioned second space be connected with above-mentioned counterbalance valve flows into road；And make
The counterbalance valve outflow road that above-mentioned discharge chambe is connected with above-mentioned counterbalance valve,
And it is configured to, makes above-mentioned counterbalance valve outflow road be configured to connect to the discharge chambe after starting to compress with suction process is completed
It is logical.
4. screw compressor according to claim 1, it is characterised in that
Above-mentioned 3rd oil leakage outlet is located at above-mentioned convolution scroll plate, by according in the pressure in discharge chambe and above-mentioned second space
The difference of pressure and make the fluid in above-mentioned second space overflow to discharge chambe back pressure hole constitute, by making above-mentioned second
Fluid in space overflows to discharge chambe to adjust the pressure in above-mentioned second space.
5. screw compressor according to claim 4, it is characterised in that
Above-mentioned back pressure hole is configured to make completion suction process and start the discharge chambe after compressing and connected with above-mentioned second space.
6. screw compressor according to claim 1, it is characterised in that
Above-mentioned 3rd oil leakage outlet is opened in the position connected with convolution outside line side compression room and convolution interior lines side compression room both sides
Put opening.
7. screw compressor according to claim 1, it is characterised in that
In the convolution lug boss that the rear side of above-mentioned convolution scroll plate is provided for linking with rotary shaft,
At least a portion in above-mentioned first space is formed in the convolution lug boss, and use is formed in convolution projection end surface side
The above-mentioned first oil leakage outlet of minimal oil needed for being spilt from above-mentioned first space to above-mentioned second space.
8. screw compressor according to claim 7, it is characterised in that
Above-mentioned second space by above-mentioned fixed scroll, the framework and above-mentioned convolution vortex dish type of the fixed scroll are installed
The sealing of the raised end surface side of convolution is arranged on into, above-mentioned first space of above-mentioned convolution lug boss and above-mentioned second space
Part is separated,
Above-mentioned first oil leakage outlet includes：It is arranged on the above-mentioned seal member of above-mentioned convolution projection end surface side；And groove, the groove
Be formed as, it is by the circumnutation of above-mentioned convolution scroll plate that the oil in above-mentioned first space is indirect via above-mentioned seal member
It is supplied to above-mentioned second space to property.
9. screw compressor according to claim 8, it is characterised in that
Constitute above-mentioned first oil leakage outlet above-mentioned groove be formed from above-mentioned convolution projection end surface slit or more than one
Hole constitute.
10. screw compressor according to claim 1, it is characterised in that
Above-mentioned second oil leakage outlet is groove, and the groove is located at the paneling of convolution scroll plate, by the convolution of above-mentioned convolution scroll plate
Move and indirectly connect above-mentioned second space and above-mentioned suction chamber.
11. screw compressors according to claim 1, it is characterised in that
Working fluid is using the adiabatic exponent refrigerant bigger than more than 1.09.
A kind of 12. freezing cycle devices of freezing air conditioner, above-mentioned freezing cycle device is characterised by,
Usage right requires the screw compressor described in 1 and constitutes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810866792.9A CN109026706B (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
| CN201810865760.7A CN108980036B (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014200554A JP6302813B2 (en) | 2014-09-30 | 2014-09-30 | Scroll compressor and refrigeration cycle apparatus using the same |
| JP2014-200554 | 2014-09-30 | ||
| PCT/JP2015/077515 WO2016052503A1 (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810865760.7A Division CN108980036B (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
| CN201810866792.9A Division CN109026706B (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106795881A true CN106795881A (en) | 2017-05-31 |
| CN106795881B CN106795881B (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580052774.1A Active CN106795881B (en) | 2014-09-30 | 2015-09-29 | Screw compressor and the freezing cycle device for having used the screw compressor |
| CN201810865760.7A Active CN108980036B (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
| CN201810866792.9A Active CN109026706B (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810865760.7A Active CN108980036B (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
| CN201810866792.9A Active CN109026706B (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20170306951A1 (en) |
| JP (1) | JP6302813B2 (en) |
| CN (3) | CN106795881B (en) |
| WO (1) | WO2016052503A1 (en) |
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| CN111033045A (en) * | 2017-09-04 | 2020-04-17 | 松下知识产权经营株式会社 | Compressor with a compressor housing having a plurality of compressor blades |
| CN112483429A (en) * | 2019-09-12 | 2021-03-12 | 开利公司 | Centrifugal compressor and refrigeration device |
| CN113330218A (en) * | 2019-02-28 | 2021-08-31 | 大金工业株式会社 | Scroll compressor having a discharge port |
| CN115450910A (en) * | 2022-10-18 | 2022-12-09 | 珠海格力电器股份有限公司 | Pump body assembly and scroll compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6302813B2 (en) * | 2014-09-30 | 2018-03-28 | 日立ジョンソンコントロールズ空調株式会社 | Scroll compressor and refrigeration cycle apparatus using the same |
| JP6688972B2 (en) * | 2017-01-27 | 2020-04-28 | パナソニックＩｐマネジメント株式会社 | Scroll compressor |
| JP2020033881A (en) * | 2018-08-27 | 2020-03-05 | 日立ジョンソンコントロールズ空調株式会社 | Scroll compressor and refrigerating air conditioner |
| CN112483430A (en) * | 2019-09-12 | 2021-03-12 | 开利公司 | Centrifugal compressor and refrigeration device |
| US11655820B2 (en) * | 2020-02-04 | 2023-05-23 | Aspen Compressor, Llc | Horizontal rotary compressor with enhanced tiltability during operation |
| KR102512409B1 (en) | 2021-02-15 | 2023-03-21 | 엘지전자 주식회사 | Scroll compressor |
| KR102454721B1 (en) * | 2021-02-19 | 2022-10-14 | 엘지전자 주식회사 | Scroll Compressor |
| CN114215757B (en) * | 2021-12-17 | 2022-11-15 | 珠海格力电器股份有限公司 | Oil return structure, compressor and air conditioner |
| JP7253655B1 (en) | 2022-05-24 | 2023-04-06 | 日立ジョンソンコントロールズ空調株式会社 | Scroll compressor and refrigeration cycle device |
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| CN111033045A (en) * | 2017-09-04 | 2020-04-17 | 松下知识产权经营株式会社 | Compressor with a compressor housing having a plurality of compressor blades |
| CN113330218A (en) * | 2019-02-28 | 2021-08-31 | 大金工业株式会社 | Scroll compressor having a discharge port |
| CN113330218B (en) * | 2019-02-28 | 2021-11-19 | 大金工业株式会社 | Scroll compressor having a discharge port |
| CN112483429A (en) * | 2019-09-12 | 2021-03-12 | 开利公司 | Centrifugal compressor and refrigeration device |
| CN115450910A (en) * | 2022-10-18 | 2022-12-09 | 珠海格力电器股份有限公司 | Pump body assembly and scroll compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108980036B (en) | 2021-02-02 |
| CN106795881B (en) | 2018-07-31 |
| CN108980036A (en) | 2018-12-11 |
| US20170306951A1 (en) | 2017-10-26 |
| WO2016052503A1 (en) | 2016-04-07 |
| JP6302813B2 (en) | 2018-03-28 |
| CN109026706B (en) | 2020-06-09 |
| CN109026706A (en) | 2018-12-18 |
| JP2016070178A (en) | 2016-05-09 |
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Effective date of registration: 20180619 Address after: Tokyo, Japan, Japan Applicant after: Hitachi Johnson Controls Air Conditioning Co., Ltd. Address before: Chinese Hongkong Kowloon Bay Applicant before: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd. |
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