CN106795881B - Screw compressor and the freezing cycle device for having used the screw compressor - Google Patents
Screw compressor and the freezing cycle device for having used the screw compressor Download PDFInfo
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- CN106795881B CN106795881B CN201580052774.1A CN201580052774A CN106795881B CN 106795881 B CN106795881 B CN 106795881B CN 201580052774 A CN201580052774 A CN 201580052774A CN 106795881 B CN106795881 B CN 106795881B
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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
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- 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 has fixed scroll and convolution scroll plate, makes the circumnutation of convolution scroll plate and forms suction chamber and discharge chambe.In addition, having：First space, is formed in the back center portion of convolution scroll plate, and guiding is stored in the lubricating oil of closed container bottom and becomes the pressure close with discharge pressure；Second space is set to side more outer than the first space at the back side of convolution scroll plate, becomes 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 leaked out to second space；Oily access is returned by what bottom of most of oil into closed container in the first space returned；The second oil leakage outlet for making a part for the oil in second space be leaked out to suction chamber；And third oil leakage outlet makes the oil spill in second space flow to discharge chambe to adjust the pressure in second space according to the difference for compressing the pressure in indoor pressure and second space.
Description
Technical field
The present invention relates to the screw compressor used in freeze cycle and the freeze cycles for having used the screw compressor
Device, more particularly to a kind of screw compressor, has：Become and discharge pressure what the back center portion of convolution scroll plate was formed
First space of the close pressure of power；And become discharge pressure and suction pressure in setting side more outer than first space
Between pressure second space.
Background technology
As the screw compressor used, used in the freezing cycle device of idle call etc. in freezing, with Japanese Unexamined Patent Publication
Screw compressor etc. recorded in 2011-58439 bulletins (patent document 1).The patent document 1 describes a kind of scroll compression
Contracting machine, consists of, and has：With end plate (platen, panelling) and the erect setting of the end plate spiral helicine rolling piece
Fixed scroll and convolution scroll plate；The discharge chambe for making these fixed scrolls and convolution scroll plate intermesh and being formed；With
In the bent axle for making above-mentioned convolution scroll plate circumnutation；Back side lug boss in above-mentioned convolution scroll plate is set, for opposite
The convolution of above-mentioned convolution scroll plate is supported in the mode that the cam pin portion of above-mentioned bent axle can move in the axial direction and rotate freely
Bearing；It is set as the frame of the Stationary side opposed with the above-mentioned back side of convolution scroll plate；Set on the frame and rotatably freely
Support the base bearing of above-mentioned bent axle；The seal member being sealed between above-mentioned convolution scroll plate back side and said frame；
And high pressure hydraulic chamber and the back pressure chamber of peripheral side of the inner circumferential side formed are divided by the seal member, to above-mentioned high pressure oil pressure chamber
For giving the lubricating oil of the roughly equal pressure of discharge pressure to substantially maintain discharge pressure, above-mentioned back pressure chamber to be maintained than row
Go out the low pressure of pressure in above-mentioned screw compressor to have：Oil supply unit, in the part opposed with above-mentioned seal member
Convolution scroll plate back part or said frame aperture is set, which crosses with the circumnutation of above-mentioned convolution scroll plate
Said sealing unit and to above-mentioned high pressure oil pressure chamber side and back pressure chamber side both sides' alternate open, to which the oil of high pressure hydraulic chamber be supplied
It is given to back pressure chamber side；And oil passage, it is set to above-mentioned convolution scroll plate or said frame, is connected to above-mentioned high pressure hydraulic chamber and the back of the body
The oil of high pressure hydraulic chamber is supplied to back pressure chamber side by pressure chamber due to pressure difference.
In addition, Japanese Unexamined Patent Publication 2005-163655 bulletins (patent document 2) describe a kind of screw compressor, 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 is engaged with above-mentioned non-convolution scroll plate and carry out circumnutation,
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 make fluid to flow into maintain the pressure of the back pressure chamber and is somebody's turn to do
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 front and back pressure difference is configured in 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 being intermittently connected to by the circumnutation of above-mentioned convolution vortex disk component
Road portion.
Moreover, the screw compressor that Japanese Unexamined Patent Publication 2012-92773 bulletins (patent document 3) are recorded has：With edge
The fixed scroll of plate (platen) and vortex rolling piece in this erect setting；With panelling and erect the whirlpool being disposed thereon
Rolling piece is revolved, is engaged with above-mentioned fixed scroll and carries out circumnutation, 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 oil passage of the oil of compressor discharge side, and above-mentioned screw compressor has：Discharge chambe access, has
The counterbalance valve for being connected to the above-mentioned discharge chambe after above-mentioned back pressure chamber and enclosed beginning, and being opened and closed using front and back pressure difference,
The oil of back pressure chamber is set to flow out the pressure for controlling above-mentioned back pressure chamber to discharge chambe；And sucking domain access, it is above-mentioned to be connected to
Back pressure chamber and until above-mentioned discharge chambe inhalation area, the mode without being connected to the above-mentioned discharge chambe after enclosed beginning constitutes,
The oil of above-mentioned back pressure chamber is supplied to above-mentioned inhalation area.
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2011-58439 bulletins
Patent document 2：Japanese Unexamined Patent Publication 2005-163655 bulletins
Patent document 3：Japanese Unexamined Patent Publication 2012-92773 bulletins
Invention content
Problems to be solved by the invention
In above patent document 1, following problem is not considered, i.e., has and is supplied to the oil of high pressure hydraulic chamber
The oil supply unit and oil passage of back pressure chamber side, can adjust from high pressure hydraulic chamber support or oppose pressure chamber flow into oil mass be still 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 needed is added with the fuel delivery needed for discharge chambe, the oil stream of a large amount of high temperature enters suction chamber, and sucking gas is heated,
Heating loss (sucking heating loss) becomes larger.
In addition, above patent document 2 is not considered following problem, both, it had been configured to be supplied to the oil base of bearing portion
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 bearing is flowed into suction chamber
A large amount of oil, according to above patent document 1, a greater amount of oil streams enters suction chamber, therefore sucks gas and heated, and heating loss becomes
Bigger is obtained, a large amount of oil is also fed into discharge chambe, therefore there is a possibility that cause oil compression.
Moreover, above patent document 3 also in the same manner as above 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, other than having sucking domain access, it is also equipped with discharge chambe connection
Road, not so as to which a part for the oil of back pressure chamber is supplied directly to discharge chambe not via suction chamber, therefore, from back pressure chamber
It can be fewer than above patent document 2 to the supply amount of suction chamber.But the oil for being supplied to bearing portion is substantially all inflow back pressure
Therefore patent document 2 is compared in room, although can make to reduce to the fuel delivery of suction chamber, it can be difficult to avoiding flowing into suction chamber
Oil more more than fuel delivery needed for suction chamber.That is, the fuel delivery needed for bearing portion is more, needed for suction chamber, discharge chambe
Such as 10 times or so of fuel delivery, still, the oil for being supplied to bearing portion is substantially all inflow back pressure chamber, therefore is not avoided that suction
The fuel delivery entered the room necessarily becomes more.It is thus impossible to which sucking gas is avoided to be heated loss by heating and become larger.In addition, from back pressure chamber
A large amount of oil is supplied to discharge chambe, is converged 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 as above patent document 2, is not accounted for these projects.
It is an object of the invention to obtain capable of controlling the fuel delivery to bearing portion, the fuel delivery to suction chamber and to pressure
The fuel delivery of contracting room each and realize the screw compressor suitably measured and the freezing for having used the screw compressor respectively
Circulator.
Solution for solving the problem
To achieve the goals above, the present invention be a kind of screw compressor, have platen setting be provided with it is spiral helicine
The fixed scroll of rolling piece and with panelling erect setting spiral helicine rolling piece and engaged 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 to form suction chamber and discharge chambe, and above-mentioned screw compressor is characterized in that having：First space,
It is formed in the back center portion of above-mentioned convolution scroll plate, and guiding is stored in the lubricating oil of closed container bottom and becomes and discharge
The close pressure of pressure；Second space is set to side more outer than above-mentioned first space at the back side of above-mentioned convolution scroll plate, at
Pressure between discharge pressure and suction pressure；A part of oil in above-mentioned first space is set to be leaked out to above-mentioned second space
First oil leakage outlet；Oily access is returned by what bottom of most of oil into closed container in above-mentioned first space returned；For
The the second oil leakage outlet for making a part for the oil in above-mentioned second space be leaked out to above-mentioned suction chamber；And third oil leakage outlet,
It makes the oil spill in above-mentioned second space flow to compression according to the difference for compressing the pressure in indoor pressure and above-mentioned second space
Room adjusts the pressure in above-mentioned second space.
The other feature of the present invention is a kind of freezing cycle device, is used for refrigerating and air conditioning, above-mentioned freezing cycle device
It is constituted using the screw compressor constituted as described above.
Invention effect
It according to the present invention, has the following effects that, can access can control the fuel delivery to bearing portion, to suction chamber
Fuel delivery and to discharge chambe fuel delivery each and realize the screw compressor suitably measured respectively and used the whirlpool
Revolve the freezing cycle device of compressor.
Description of the drawings
Fig. 1 is the longitudinal section view for the embodiment 1 for indicating the screw compressor of the present invention.
Fig. 2 is the figure for indicating fixed scroll shown in FIG. 1 and the state in convolution scroll plate engagement, is from Fig. 1
The figure of the directions II-II observation.
Fig. 3 is the stereogram of convolution scroll plate shown in FIG. 1 viewed from above.
Fig. 4 is the enlarged cross-sectional view on the counterbalance valve periphery of screw compressor shown in FIG. 1.
Fig. 5 is other figures for illustrating convolution scroll plate, is and the comparable stereograms of Fig. 2.
Fig. 6 is the figure for the embodiment 2 for illustrating the screw compressor of the present invention, is and the comparable figures of Fig. 4.
Fig. 7 is the figure for illustrating the embodiment of the present invention 3, is the example for indicating to have used the freezing cycle device of screw compressor
Freeze cycle structure chart.
Specific implementation mode
Hereinafter, using attached drawing, the specific embodiment of the present invention is illustrated.In addition, in the various figures, being labeled with identical
The part of symbol indicates same or equivalent part.
Embodiment 1
Using Fig. 1~Fig. 5, the embodiment 1 of the screw compressor of the present invention is illustrated.Fig. 1 indicates the present invention
The longitudinal section view of the embodiment 1 of screw compressor, Fig. 2 are indicated in fixed scroll shown in FIG. 1 and convolution scroll plate engagement
State figure, be the figure from the directions II-II of Fig. 1, Fig. 3 is the vertical of convolution scroll plate shown in FIG. 1 viewed from above
Body figure, Fig. 4 are the enlarged cross-sectional views on the counterbalance valve periphery of screw compressor shown in FIG. 1, and Fig. 5 is its for illustrating convolution scroll plate
The figure of its example is and the comparable stereograms of Fig. 3.
First, according to Fig. 1, the overall structure of the screw compressor of the present embodiment is illustrated.
Screw compressor 1 is stored compression mechanical part 2 and motor part 16 etc. in shell (closed container) 9 and is constituted.
In compression mechanism section 2, convolution scroll plate 8 engages and shape in 17 fixed fixed scrolls 7 of frame
Make the above-mentioned convolution of convolution scroll plate 8 fortune via bent axle (rotary shaft) 10 using the rotation in said motor portion 16 at discharge chambe 13
It is dynamic, to make the volume of above-mentioned discharge chambe 13 reduce, carry out compressed action.
With the compressed action, from suction inlet 14 to suction chamber 20 (with reference to Fig. 3) sucking working fluid, the work sucked
Fluid discharge the discharge space 54 in shell 9 from outlet 15 via the compression travel of discharge chambe 13.It is discharged to the discharge
The working fluid in space 54 in the periphery of the periphery of above-mentioned fixed scroll 7 and said frame 17 by being formed by access (not
Diagram) and motor chamber 52 is flowed to, then, it is discharged to outside shell 9 from discharge pipe 6.
Above-mentioned fixed scroll 7 has：Disk-shaped platen 7a；The rolling piece of platen 7a is stood up in the shape of a spiral
7b；Positioned at the peripheral side of above-mentioned platen 7a, it is cylindrical in shape and is set as that there is the height roughly the same with the above-mentioned front end face of rolling piece 7b
The paneling 7e of degree and the support portion 7d for surrounding rolling piece 7b.Erect be provided with above-mentioned rolling piece 7b platen 7a surface because
Between rolling piece 7b, so being referred to as tooth root 7c.
Above-mentioned paneling 7e is the sliding surface that the support portion 7d of fixed scroll 7 is contacted with the panelling 8a of convolution scroll plate 8.
Above-mentioned support portion 7d is fixed on said frame 17 by fixed scroll 7 by bolt etc., with joined integrally upper of fixed scroll 7
It states frame 17 and is fixed on above-mentioned shell 9 by fixed solutions such as welding.
Above-mentioned convolution scroll plate 8 is opposed to configure with fixed scroll 7, the rolling piece 7b of fixed scroll 7 and convolution whirlpool
The rolling piece 8b engagements of capstan 8, so as to rotatably be equipped in frame 17.The convolution scroll plate 8 has from disk-shaped edge
The surface of plate 8a, that is, tooth root 8c erects spiral helicine rolling piece 8b made of setting and is returned set on the back side center of above-mentioned panelling 8a
Revolve lug boss (lug boss) 8d.In addition, the surface of the peripheral part of above-mentioned panelling 8a contacted with above-mentioned fixed scroll 7 becomes back
The paneling 8e of vortex capstan 8.
The front end (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 have minim gap and it is opposite.Similarly, the front end (rolling piece tooth top) of the rolling piece 7b of fixed scroll 7
It is configured to opposite with minim gap with the tooth root 8c of above-mentioned convolution scroll plate 8.
It is set in the bottom of the above-mentioned shell 9 for the closed container construction for being accommodated with compression mechanism section 2 and motor part 16 etc.
There is the oil storage tank 53 of storage lubricating oil (refrigerator oil).Said motor portion 16 is made of rotor 16a and stator 16b, at above-mentioned turn
Sub- 16a is integrally fixed with bent axle 10.The bent axle 10 is freely and rotatably supported via base bearing 5 in said frame 17, with fixation
The central axis coaxial of scroll plate 7.
Eccentric crank portion 10a is equipped in the front end of above-mentioned bent axle 10, crank portion 10a, which is inserted into, to be arranged in above-mentioned convolution whirlpool
The convolution bearing 11 of the convolution lug boss 8d of capstan 8, above-mentioned convolution scroll plate 8 are configured to the rotation with bent axle 10, can return
Rotation.
The central axis of above-mentioned convolution scroll plate 8 becomes predetermined relative to the central axis bias of above-mentioned fixed scroll 7
The state of distance.In addition, the rolling piece 8b of convolution scroll plate 8 is staggered in the circumferential relative to the rolling piece 7b of fixed scroll 7
Predetermined angular (generally 180 degree) and overlap.
Reference numeral 12 is euclidean Ring, and being used to constrain above-mentioned convolution scroll plate 8 on one side makes it relative to above-mentioned fixed whirlpool
Capstan 7 makes it relatively carry out circumnutation on one side without rotation.
Fig. 2 is the figure for illustrating above-mentioned fixed scroll 7 and the state in the convolution engagement of scroll plate 8, is the II-II from Fig. 1
Therefore the figure of direction observation for scroll plate 8 of circling round, convolution scroll plate rolling piece 8b is shown with section, (auxiliary with two chain-dotted lines
Index contour) show with convolution scroll plate 8 panelling 8a the comparable part in periphery.
As shown in Fig. 2, forming the more of crescent shape between fixed scroll rolling piece 7b and convolution scroll plate rolling piece 8b
A discharge chambe 13 (convolution interior lines side compression room 13a, convolution outside line side compression room 13b), when making 8 circumnutation of convolution scroll plate
When, with being moved to the direction of central portion, volume continuously reduces each discharge chambe 13.
Reference numeral 20 is suction chamber, is the space for the midway for sucking fluid.The phase of the circumnutation for scroll plate 8 of circling round
Advance, complete fluid it is enclosed at the time of after, the suction chamber 20 become discharge chambe 13.
As shown in Figures 1 and 2, above-mentioned suction inlet 14 is set to fixed scroll 7.The suction inlet 14 with above-mentioned suction chamber 20
The mode of connection is disposed through the peripheral side of the platen 7a of fixed scroll 7.
Above-mentioned outlet 15 is disposed through above-mentioned fixed scroll 7 in such a way that the discharge chambe 13 with the innermost side is connected to
Platen 7a spiral center near.
When making above-mentioned bent axle 10 rotate by 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 scheduled radius of gyration.As a result, in above-mentioned each discharge chambe 13
The working fluid sucked from above-mentioned suction inlet 14 is inside compressed successively, for example, the refrigerant gas recycled in freeze cycle
(hereinafter, also referred to as fluid), compressed working fluid are discharged to above-mentioned discharge space 54, institute as above from above-mentioned outlet 15
State ground, such as freeze cycle being supplied to from above-mentioned discharge pipe 6 outside compressor.
It is equipped with displacement type or centrifugal oil feed pump 21 in the lower end of above-mentioned bent axle 10, with the rotation of above-mentioned bent axle 10,
Above-mentioned oil feed pump 21 also rotates, and the oil storage tank in 9 bottom of above-mentioned shell is sucked from the lubrication through oil hole 22a of fuel feeding pump case 22
Lubricating oil stored by 53, and be discharged from the outlet 21a of above-mentioned oil feed pump 21.The lubricating oil being discharged passes through in above-mentioned bent axle
It is formed by through hole (oil supplying hole) 3 in 10 in the axial direction and empty into the convolution lug boss 8d of the upper end of above-mentioned crank portion 10a
Between convey.
In addition, above-mentioned through hole 3 flow lubricating oil a part via the cross-drilled hole 24 set by above-mentioned bent axle 10
And it is transported to supplementary bearing 23, and after being lubricated to the supplementary bearing 23, return to the above-mentioned oil storage tank 53 of 9 bottom of shell.Upper
The above-mentioned convolution lug boss space that another most lubricating oil that through hole 3 flows reaches the upper end of above-mentioned crank portion 10a is stated,
Above-mentioned convolution bearing 11 is lubricated after by the oil groove 57 set by the peripheral surface in above-mentioned crank portion 10a.Then, should
Lubricating oil is after being lubricated the above-mentioned base bearing 5 set by the lower part of above-mentioned convolution bearing 11, by by outage 26a
And the above-mentioned oil storage tank 53 for returning oily access 26 and returning to 9 bottom of shell that oil exit pipe 26b is constituted.
Here, by by space and storage in the above-mentioned convolution lug boss of the formation such as above-mentioned oil groove 57 and above-mentioned convolution bearing 11
The space of above-mentioned base bearing 5 is (by frame 17, bent axle 10, frame seal 56, the flange part 34 set by convolution lug boss 8d
And the space of the formation of seal member 32) become 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 9 bottom of shell by above-mentioned outage 26a and above-mentioned oil exit pipe 26b (returning oily access).
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 34 end face of portion and flow into the lubricating of above-mentioned euclidean Ring 12, above-mentioned fixed whirlpool to back pressure chamber 18
The lubrication of sliding part between capstan 7 and convolution scroll plate 8 and the sealing of the above-mentioned front space of each rolling piece 7b, 8b etc.
Amount needed for (closed), above-mentioned back pressure chamber 18 are provided at than 33 outer side of above-mentioned first space and as discharge pressure and sucking
The second space of pressure between pressure.
Above-mentioned seal member 32 is set in said frame 17 and above-mentioned flange part 34 together with waved spring (not shown)
Annular groove 31 set by opposed face separates as above-mentioned first space 33 of discharge pressure and as suction pressure and discharge
The above-mentioned back pressure chamber (second space) 18 of pressure between pressure.
Above-mentioned first oil leakage outlet is for example by the one or more set by the above-mentioned flange part 34 in convolution lug boss 8d
Long slit 60 (slot) and above-mentioned seal member 32 are constituted in the radial direction, and above-mentioned slit 60 is to pass through above-mentioned convolution scroll plate
8 circumnutation and the mode of intermittently crossing above-mentioned seal member 32 configure, and are thus configured to intermittently be connected to above-mentioned
First space 33 and above-mentioned back pressure chamber 18.
The pressure difference for utilizing above-mentioned first space 33 and above-mentioned back pressure chamber 18 as a result, can make oil from above-mentioned first space
33 flow into via the above-mentioned slit 60 as minim gap to above-mentioned back pressure chamber 18.
In addition, the configuration of above-mentioned slit 60 be not limited to be configured to the circumnutation of convolution scroll plate 8 and intermittently
Above-mentioned seal member 32 is crossed, seal member 32 can also be crossed always.
In addition, replacing above-mentioned slit 60, and it is configured to, is arranged one or more in the above-mentioned flange part 34 of convolution lug boss
A, the i.e. more than one hole (for example, circular slot) as oil storage tank, the hole with convolution scroll plate 8 circumnutation and
Cross the circular motion of above-mentioned seal member 32.Above-mentioned hole is between above-mentioned first space 33 and above-mentioned back pressure chamber 18 as a result,
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.Constituting above-mentioned first oil leakage outlet in this way can also.
In the present embodiment, a part for the lubricating oil of above-mentioned back pressure chamber 18 is flowed into go out via aftermentioned second oil leakage
Road and the mode for flowing into above-mentioned suction chamber 20 is constituted, rolling piece sliding surface, rolling piece front space etc. are lubricated, and
For sealing equal between discharge chambe.
In addition, for example to the remainder of the lubricating oil of above-mentioned back pressure chamber 18 to be flowed via aftermentioned third oil leakage outlet
The mode for entering above-mentioned discharge chambe 13 is constituted, and is lubricated to the rolling piece sliding surface of discharge chambe, rolling piece front space etc., and
It is also used for the sealing waited between discharge chambe.
In this way, in the present embodiment, it is possible to from above-mentioned first space 33 via above-mentioned first oil leakage outlet and to above-mentioned
Needed for the sealing that two spaces (back pressure chamber) 18 leak out between the lubrication of rolling piece sliding surface, rolling piece front space etc., discharge chambe etc.
Amount lubricating oil, remaining lubricating oil after being lubricated to each bearing portion through by above-mentioned outage 26a and oil exit pipe 26b and
Return to oil storage tank 53.Therefore, in the present embodiment, it is possible to independently control the fuel delivery needed for the lubrication of each bearing portion and support or oppose
The fuel delivery of pressure chamber 18.Therefore, it is possible to make the fuel delivery to back pressure chamber 18 reach required minimum limit.
In addition, being flowed into the lubricating oil of above-mentioned back pressure chamber 18 can supply 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 third oil leakage outlet.Therefore, it is possible to make to
Suction chamber 20 and required minimum limit is respectively reached to the fuel delivery of discharge chambe 13, therefore, it is possible to make in above-mentioned suction chamber 20
Sucking heating loss reaches minimum limit, in addition, can prevent because caused by the oversupply of the oil of above-mentioned discharge chambe 13
Oil compression, heating loss etc., therefore can realize the screw compressor of high efficiency and high reliability.
Next, using Fig. 2 and Fig. 3, the structure of 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 (slot) of oil storage tank, such as Fig. 2 institutes
Show, which describes track 65 shown in Fig. 2, be indirectly connected to back pressure chamber with the circumnutation of convolution scroll plate 8
(second space) 18 and the groove portion 66 being connected to suction chamber 20.
In the state that above-mentioned oilhole 64 is connected to back pressure chamber 18, (pressure is that discharge pressure is pressed with sucking 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
Movement and when be connected to above-mentioned groove portion 66 (pressure is suction pressure), the oil in above-mentioned oilhole 64 be under pressure it is poor 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 be adjusted arbitrarily from above-mentioned back pressure chamber 18 to the fuel delivery of above-mentioned suction chamber 20.
Next, using Fig. 1, Fig. 2 and Fig. 4, the structure of above-mentioned third oil leakage outlet is illustrated.
First, the function of above-mentioned back pressure chamber (second space) 18 is illustrated.In screw compressor 1, due to its pressure
Contracting acts on, and generating makes fixed scroll 7 and the power (separating force) of scroll plate 8 of circling round axial direction disconnected from each other.Due to the axial direction
Power, when the disengaging that above-mentioned two scroll plate detached, generated so-called convolution scroll plate 8 shows, the seal of discharge chambe 13 is deteriorated,
Compression efficiency reduces.
Here, the panelling 8a back sides in convolution scroll plate 8 are set to the pressure between discharge pressure and suction pressure
Back pressure chamber 18, above-mentioned separating force is offset by the pressure (back pressure) of the back pressure chamber 18, and press and circle round to fixed scroll 7
Scroll plate 8.If pressing force at this time is excessive, the cunning of the paneling 8e of scroll plate of circling round 8 and the paneling 7e of fixed scroll 7
Dynamic loss increases, and compressor efficiency reduces.
That is, if above-mentioned back pressure, there are best value is too small, the seal of discharge chambe is deteriorated, hot fluid loss increases
Greatly, if it is excessive, it slides loss and increases.Therefore, in the high performance of compressor, high reliability, back pressure is maintained most
Good value is important.
Best back pressure value in order to obtain, as shown in Figure 1, in the screw compressor of the present embodiment, in above-mentioned fixed whirlpool
The support portion 7d of capstan 7 has above-mentioned third oil leakage outlet (discharge chambe access), which, which has, is 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 61 periphery of counterbalance valve in Fig. 1, goes out above-mentioned third oil leakage
The structure on road is described in detail.
Above-mentioned third oil leakage outlet (discharge chambe access) includes：It is connected to 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；It is connected to 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
It separates above-mentioned counterbalance valve and flows into the mode of road 62a and above-mentioned counterbalance valve outflow road 62c configured with valve 61a.Valve 61a be set as by
The spring 61b for being fixed on locating part 61 flows into the opening portion pressing of road 62a to above-mentioned counterbalance valve.
It is imported in pressure, the i.e. back pressure that above-mentioned counterbalance valve flows into the 62a of road than flowing out road 62c via above-mentioned counterbalance valve
The high feelings of the total of pressure, the i.e. pressure of discharge chambe and pressure corresponding with the pressing force of spring 61b in above-mentioned space 62b
Under condition, above-mentioned valve 61a is moved upward, and so that above-mentioned counterbalance valve is flowed into road 62a and is connected to above-mentioned counterbalance valve outflow road 62c.Also
It is in the case of pressure ratio value height of the above-mentioned counterbalance valve 61 in back pressure chamber 18, the fluid in the back pressure chamber 18 to be made to overflow to
The back pressure of above-mentioned back pressure chamber 18 is adjusted to desired value by above-mentioned discharge chambe 13.
The oil flowed into above-mentioned discharge chambe 13 is lubricated rolling piece sliding surface, rolling piece front space etc., and
For sealing equal between discharge chambe, then, discharge space 54 is discharged to from above-mentioned outlet 15.A part of example of the oil of the discharge
It is discharged from above-mentioned discharge pipe 6 to freeze cycle such as together with refrigerant gas, it is remaining then to divide with refrigerant gas in shell 9
From and be reserving at the above-mentioned oil storage tank 53 at shell bottom.
In existing screw compressor described in above patent document 2, patent document 3, to above-mentioned first space, i.e. axis
The lubricating oil of bearing portion oil supply 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 by heating and
Expansion, sucking heating loss increases, and the refrigeration dose that can be attracted to suction chamber 20 is also reduced, therefore volumetric efficiency drops
It is low.In addition, substantially all being flowed into the lubricating oil of bearing portion oil supply to discharge chambe 13, therefore, the increasing of heating loss is generated
Big and the compression power caused by oil compression increase.
On the other hand, in above patent document 1, although the fuel delivery to back pressure chamber 18 can be independently controlled,
It, cannot be to discharge chambe when the lubricants capacity for inhibiting to flow into back pressure chamber 18 in order to inhibit the sucking in suction chamber to heat loss
13 fully supply, and the obturation effect of discharge chambe 13 generated by oil reduces, therefore leakage loss increases.
That is, at present the lubricating oil suitably measured cannot be supplied respectively to suction chamber 20 and compressor 13.
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 independently controls the fuel feeding supplied from back pressure chamber 18 to suction chamber 20 in addition, using the second oil leakage outlet
Amount, be also equipped with third oil leakage outlet, from back pressure chamber 18 via counterbalance valve 61 and to complete suction process after 13 fuel feeding of discharge chambe,
Therefore, it is possible to suitably adjust the fuel delivery of each to each bearing portion, suction chamber 20 and discharge chambe 13.
In addition, in the present embodiment, above-mentioned counterbalance valve outflow road 62c starts compressed compression with suction process is completed
Room 13 is connected to.That is, the discharge chambe 13 is the discharge chambe of the compression midway after completing suction process, it is the pressure being 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 for scroll plate of circling round
The position of line room 13b and convolution interior lines room 13a both sides' alternate communication.
In addition, reference numeral 63 shown in Fig. 4 is fixed pin, road 62c is flowed out in order to which counterbalance valve is arranged for closed blocking
And the end of the cross-drilled hole formed.
It in the present embodiment, can be by back pressure chamber due to equipped with the third oil leakage outlet with above-mentioned counterbalance valve 61
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 for based on above-mentioned first oil leakage outlet from above-mentioned first space 33 to the fuel delivery of above-mentioned back pressure chamber 18 and based on above-mentioned the
Two oil leakage outlets from above-mentioned back pressure chamber 18 to the difference of the fuel delivery of suction chamber 20.Although that is, going out list via above-mentioned first oil leakage
Member and from the first space 33 to above-mentioned back pressure chamber 18 for oil supply, still, to suction chamber import in the oil by the second oil leakage outlet
The amount of decision, remaining oil import discharge chambe 13.
It therefore, can will be to by adjusting the fuel delivery of each of above-mentioned first oil leakage outlet and the second oil leakage outlet
The fuel delivery of suction chamber and fuel delivery to discharge chambe are controlled as suitably measuring.
Generally, the fuel delivery needed for sealing of the fuel delivery than suction chamber needed for the sealing of discharge chambe 13 is more, therefore, example
Such as, in above patent document 1, the fuel delivery of the first oil leakage outlet is being set as the fuel delivery needed for the sealing of discharge chambe
In the case of, the over feeding in suction chamber 20, sucking heating loss increases.On the contrary, being set by the fuel delivery of the first oil leakage outlet
In the case of being set to the less fuel delivery needed for the sealing of suction chamber 20, for shortage of oil in discharge chambe, generated by oil close
Effect reduction is closed, leakage loss increases.
In this regard, the present embodiment can supply suitable oil to each of suction chamber and discharge chambe, it is therefore, special compared to above-mentioned
Sharp document 1 can reduce sucking heating loss, leakage loss.
Moreover, counterbalance valve outflow road 62c be formed in by circle round scroll plate circumnutation by 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, for oil supply, be kept away to the discharge chambe of both sides
Exempt from the problem in arbitrary discharge chambe 13 fuel feeding deficiency.
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, so as to supplied to discharge chambe 13 first oil leakage outlet and the second oil leakage outlet fuel delivery difference, therefore, it is possible to can
Ensure the fuel delivery to discharge chambe 13 by ground.
If moreover, as working fluid, the refrigerant bigger than 1.09 using high temperature, adiabatic exponent is easily made into, such as
The present embodiment is applied in the screw compressor of R32 etc., then can further decrease sucking heating loss, can obtain more efficient
Screw compressor.
In addition, in the above-described embodiment, as shown in figure 3, to circular oil is arranged in the paneling 8e of convolution scroll plate 8
Hole (slot) 64 is illustrated to constitute the example of above-mentioned second oil leakage outlet, and but not limited to this.That is, can also be configured to, such as
Shown in Fig. 5, replace above-mentioned oilhole 64 and be made the slit (slot) 67 of depth as shallow, the slit 67 always or intermittently with back pressure chamber
18 and the groove portion 66 that is connected to suction chamber 20 be connected to, using pressure difference, the oil of back pressure chamber 18 is imported into suction chamber 20.The situation
Under, fuel delivery can be controlled by adjusting depth and width, length or number of above-mentioned slit etc..
Embodiment 2
Using Fig. 6, the embodiment 2 of the screw compressor of the present invention is illustrated.Fig. 6 is comparable with above-mentioned Fig. 4
Figure, in the Fig. 6, the part for being labelled with symbol identical with above-mentioned Fig. 1~Fig. 5 indicates same or equivalent part.
It,, can be independently by above-mentioned first oil leakage outlet also in the same manner as the above embodiments 1 in the present embodiment 2
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 be independently controlled
The fuel delivery supplied from back pressure chamber 18 to suction chamber 20.But in the present embodiment 2, do not have it is shown in Fig. 4, from back pressure chamber
18 via counterbalance valve 61 and to the third oil leakage outlet of 13 fuel feeding of discharge chambe.The above-mentioned third oil leakage outlet of the present embodiment 2 is unworthy of
It is standby in the support portion 7d of fixed scroll 7, and it is as illustrated in fig. 6, by being formed by back pressure hole in the panelling 8a of convolution scroll plate 8
68 and constitute.
Above-mentioned back pressure hole 68 is configured to be connected to back pressure chamber (second space) 18 and to complete suction process and after starting compression
Discharge chambe 13 mode be set to above-mentioned convolution scroll plate panelling 8a.It is only communicated in and suction chamber that is, above-mentioned back pressure hole 68 is set to
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 press
The value of average pressure in contracting room 13.
As described above, having above-mentioned first oil leakage outlet, above-mentioned second oil leakage outlet and (the third oil of above-mentioned back pressure hole 68
Leak out road), in the same manner as in the above embodiment 1, 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, realize the fuel feeding suitably measured respectively, realize be lost it is small efficient
Screw compressor.In addition, typically containing refrigerant from above-mentioned first~third oil leakage outlet oil spill (lubricating oil), but
It is that the present invention also illustrates the mixture in the oil containing refrigerant as oil.
Embodiment 3
According to Fig. 7, the embodiment of the present invention 3 is illustrated.Fig. 7 is the scroll compression for indicating to have used the above-mentioned present invention
The freeze cycle structure chart of an example of the freezing air conditioner freezing cycle device of contracting machine.
In the present embodiment, according to Fig. 7, example the case where to applied to air conditioner as freezing cycle device is said
It is bright.In the figure 7, reference numeral 1 is screw compressor, and 43 be four-way valve, and 40 be outdoor heat exchanger (becomes when refrigeration operation
Condenser becomes evaporator when heating operation), 41 be the expansion valve being made of electric expansion valve etc., and 42 be indoor heat exchange
Device (becomes evaporator, become condenser when heating operation) when refrigeration 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 recorded in the various embodiments described above
Either one or two of compressor.
The screw compressor recorded in any embodiment of the present invention stated is loaded onto to the air-conditioner set shown in Fig. 7, from
And the running efficiency of air conditioner can be greatly improved, and the annual energy consumption efficiency (APF) of air conditioner can be greatly improved, it can
Obtain that annual power consumption is low and operating range is big, the good air conditioner of availability (freezing cycle device).
In addition, in the present embodiment 3, to being applied to, outdoor heat exchanger 40 is one, indoor side heat exchanger 42 is
The case where one air conditioner, is illustrated, but it is more that can also be equally applicable to above-mentioned indoor side heat exchanger 42
Multiple-connecting air conditioner etc., and similarly can be applied to the freezing cycle devices such as dedicated air conditioner, refrigerator that freeze.
As mentioned above, each embodiment according to the present invention can make the 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
It accesses efficient screw compressor and has used the freezing cycle device of the freezing air conditioner of the screw compressor.
Additionally, this invention is not limited to the above embodiments, contain various modifications example.
In addition, the above embodiments are the examples for for ease of understanding illustrating the present invention and explaining in detail, not limit
Due to must have illustrated all structures.Moreover, a part for the structure for each embodiment, can carry out other knots
Addition, deletion, the displacement of structure.
Symbol description
1-screw compressor, 2-compression mechanical parts, 3-through holes (oil supplying hole), 5-base bearings, 6-discharge pipes, 7-
Fixed scroll, 7a-platen, 7b-rolling piece, 7c-tooth root, 7d-support portion, 7e-paneling, 8-convolution scroll plates,
8a-panelling, 8b-rolling piece, 8c-tooth root, 8d-convolution lug boss (lug boss), 8e-paneling, 9-shells (closed appearance
Device), 10-bent axles (rotary shaft), 10a-crank portion, 11-convolution bearings, 12-euclidean Rings, 13-discharge chambes, 13a-convolution
Interior lines side compression room, 13b-convolution outside line side compression room, 14-suction inlets, 15-outlets, 16-motor parts, 16a-turn
Son, 16b-stator, 17-frames, 18-back pressure chambers, 20-suction chambers, 21-oil feed pumps, 21a-fuel feeding pump discharge, 22-
Fuel feeding pump case, 22a-lubrication through oil hole, 23-supplementary bearings, 24-cross-drilled holes, 26-return oily access (26a-outage,
26b-oil exit pipe), 31-annular grooves, 32-seal members, the 33-the first space, 34-flange parts, Re Jiao Change on the outside of Shi 40-
Device, 41-expansion valves, the insides Shi 42-Re Jiao Change devices, 43-four-way valves, 52-motor chambers, 53-oil storage tanks, 54-discharges are empty
Between, 56-frame seals, 57-oil grooves, 60-slits (slot), 61-counterbalance valves, 61a-valve, 61b-spring, 61c-limit
Position part, 62a-counterbalance valve inflow road, 62b-space, 62c-counterbalance valve outflow road, 63-fixed pins, 64-oilholes (slot),
The track of 65-oilholes, 66-groove portions, 67-slits (slot), 68-back pressure holes.
Claims (11)
1. a kind of screw compressor has the fixed scroll and tool for being provided with spiral helicine lapping plate rolling piece in platen setting
There is the spiral helicine lapping plate rolling piece in cover board setting setting and is engaged with above-mentioned fixed scroll and carry out circumnutation
Circle round scroll plate, and be 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 characterized in that having：
First space, is formed in the back center portion of above-mentioned convolution scroll plate, and guiding is stored in the lubrication of closed container bottom
Oil and become the pressure close with discharge pressure；
Second space is set to side more outer than above-mentioned first space at the back side of above-mentioned convolution scroll plate, becomes discharge pressure
Pressure between suction pressure；
The the first oil leakage outlet for making a part of oil in above-mentioned first space be leaked out to above-mentioned second space；
Oily access is returned by what bottom of most of oil into closed container in above-mentioned first space returned；
The second oil leakage outlet for making a part for the oil in above-mentioned second space be leaked out to above-mentioned suction chamber；And
Third oil leakage outlet makes above-mentioned second sky according to the difference for compressing the pressure in indoor pressure and above-mentioned second space
In oil spill flow to discharge chambe to adjust the pressure in above-mentioned second space,
In the back side of above-mentioned convolution scroll plate, the convolution lug boss for linking with rotary shaft is set,
At least part in above-mentioned first space is formed in the convolution lug boss, and is formed and is used in the convolution lug boss end surface side
In the above-mentioned first oil leakage outlet for leaking out required minimal oil from above-mentioned first space to above-mentioned second space.
2. screw compressor according to claim 1, which is characterized in that
Above-mentioned third oil leakage outlet is set to above-mentioned fixed scroll, has according in the indoor pressure of compression and above-mentioned second space
Pressure difference and the counterbalance valve that is opened and closed, adjusted in a manner of so that the oil spill in above-mentioned second space is flowed to discharge chambe
State the pressure in second space.
3. screw compressor according to claim 2, which is characterized in that
Above-mentioned third oil leakage outlet has：The counterbalance valve that above-mentioned second space is connected to above-mentioned counterbalance valve is set to flow into road；And make
The counterbalance valve that above-mentioned discharge chambe is connected to above-mentioned counterbalance valve flows out road,
And it is configured to, above-mentioned counterbalance valve outflow road is made to be configured to start compressed discharge chambe to suction process is completed and connect
It is logical.
4. screw compressor according to claim 1, which is characterized in that
Above-mentioned third oil leakage outlet is set to above-mentioned convolution scroll plate, by according in the indoor pressure of compression 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 in above-mentioned second space
Fluid overflow to discharge chambe to adjust the pressure in above-mentioned second space.
5. screw compressor according to claim 4, which is characterized in that
Above-mentioned back pressure hole is configured to make completion suction process and start compressed discharge chambe and be connected to above-mentioned second space.
6. screw compressor according to claim 1, which is characterized in that
Above-mentioned third oil leakage outlet is opened in the position being connected to convolution outside line side compression room and interior lines side compression room both sides of circling round
Set opening.
7. screw compressor according to claim 1, which is characterized in that
Above-mentioned second space by above-mentioned fixed scroll, the frame of the fixed scroll and above-mentioned convolution vortex dish type are installed
The sealing of convolution lug boss end surface side is arranged at, above-mentioned first space of above-mentioned convolution lug boss and above-mentioned second space
Part separates,
Above-mentioned first oil leakage outlet includes：Above-mentioned seal member in above-mentioned convolution lug boss end surface side is set；And slot, the slot
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.
8. screw compressor according to claim 7, which is characterized in that
Constitute the above-mentioned slot of above-mentioned first oil leakage outlet by be formed in above-mentioned convolution protrusion end surface slit or more than one
Hole constitute.
9. screw compressor according to claim 1, which is characterized in that
Above-mentioned second oil leakage outlet is slot, which is set to the paneling of convolution scroll plate, passes through the convolution of above-mentioned convolution scroll plate
It moves and is indirectly connected to above-mentioned second space and above-mentioned suction chamber.
10. screw compressor according to claim 1, which is characterized in that
Working fluid is using the adiabatic exponent refrigerant bigger than more than 1.09.
11. a kind of freezing cycle device of freezing air conditioner, above-mentioned freezing cycle device are characterized in that,
It is constituted using screw compressor described in claim 1.
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 |
|---|---|---|---|
| JP2014-200554 | 2014-09-30 | ||
| JP2014200554A JP6302813B2 (en) | 2014-09-30 | 2014-09-30 | Scroll compressor and refrigeration cycle apparatus using the same |
| PCT/JP2015/077515 WO2016052503A1 (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
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| 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 |
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| Publication Number | Publication Date |
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| CN106795881A CN106795881A (en) | 2017-05-31 |
| CN106795881B true CN106795881B (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810865760.7A Active CN108980036B (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
| CN201580052774.1A Active CN106795881B (en) | 2014-09-30 | 2015-09-29 | Screw compressor and the freezing cycle device for having used the screw compressor |
| CN201810866792.9A Active CN109026706B (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810865760.7A Active CN108980036B (en) | 2014-09-30 | 2015-09-29 | Scroll compressor and refrigeration cycle device using same |
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|---|---|
| US (1) | US20170306951A1 (en) |
| JP (1) | JP6302813B2 (en) |
| CN (3) | CN108980036B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108980036A (en) * | 2014-09-30 | 2018-12-11 | 日立江森自控空调有限公司 | Screw compressor and the freezing cycle device for having used the screw compressor |
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| 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 |
| 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 |
| 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 |
| JP6773152B2 (en) * | 2019-02-28 | 2020-10-21 | ダイキン工業株式会社 | Scroll compressor |
| CN112483429A (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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| US520175A (en) * | 1894-05-22 | Bolt-threading machine | ||
| JP2862429B2 (en) * | 1992-02-28 | 1999-03-03 | 三菱重工業株式会社 | Scroll fluid machine |
| US6139295A (en) * | 1998-06-22 | 2000-10-31 | Tecumseh Products Company | Bearing lubrication system for a scroll compressor |
| US7171251B2 (en) * | 2000-02-01 | 2007-01-30 | Spo Medical Equipment Ltd. | Physiological stress detector device and system |
| JP4152678B2 (en) * | 2002-06-13 | 2008-09-17 | 松下電器産業株式会社 | Scroll compressor |
| JP4258017B2 (en) * | 2003-12-19 | 2009-04-30 | 日立アプライアンス株式会社 | Scroll compressor |
| CN101522713A (en) * | 2006-09-01 | 2009-09-02 | 津莫吉尼蒂克斯公司 | Variable region sequences of IL-31 monoclonal antibodies and methods of use |
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| JP4979473B2 (en) * | 2007-06-06 | 2012-07-18 | 日立アプライアンス株式会社 | Scroll compressor |
| JP2009162102A (en) * | 2008-01-07 | 2009-07-23 | Hitachi Appliances Inc | Hermetic scroll compressor |
| JP4992822B2 (en) * | 2008-05-16 | 2012-08-08 | 株式会社豊田自動織機 | Scroll compressor |
| KR101484538B1 (en) * | 2008-10-15 | 2015-01-20 | 엘지전자 주식회사 | Scoroll compressor and refrigsrator having the same |
| JP4903826B2 (en) * | 2009-02-25 | 2012-03-28 | 日立アプライアンス株式会社 | Scroll fluid machinery |
| JP5199951B2 (en) * | 2009-06-01 | 2013-05-15 | 日立アプライアンス株式会社 | Scroll compressor |
| JP2011027076A (en) * | 2009-07-29 | 2011-02-10 | Panasonic Corp | Scroll compressor |
| JP5719685B2 (en) * | 2011-05-17 | 2015-05-20 | 日立アプライアンス株式会社 | Helium hermetic scroll compressor |
| JP5786130B2 (en) * | 2011-05-24 | 2015-09-30 | パナソニックＩｐマネジメント株式会社 | Scroll compressor |
| 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 |
-
2014
- 2014-09-30 JP JP2014200554A patent/JP6302813B2/en active Active
-
2015
- 2015-09-29 US US15/511,323 patent/US20170306951A1/en not_active Abandoned
- 2015-09-29 CN CN201810865760.7A patent/CN108980036B/en active Active
- 2015-09-29 CN CN201580052774.1A patent/CN106795881B/en active Active
- 2015-09-29 CN CN201810866792.9A patent/CN109026706B/en active Active
- 2015-09-29 WO PCT/JP2015/077515 patent/WO2016052503A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980036A (en) * | 2014-09-30 | 2018-12-11 | 日立江森自控空调有限公司 | Screw compressor and the freezing cycle device for having used the screw compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016070178A (en) | 2016-05-09 |
| WO2016052503A1 (en) | 2016-04-07 |
| CN108980036A (en) | 2018-12-11 |
| JP6302813B2 (en) | 2018-03-28 |
| CN106795881A (en) | 2017-05-31 |
| CN109026706B (en) | 2020-06-09 |
| CN109026706A (en) | 2018-12-18 |
| US20170306951A1 (en) | 2017-10-26 |
| CN108980036B (en) | 2021-02-02 |
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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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