CN106351830A - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
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- CN106351830A CN106351830A CN201610980513.2A CN201610980513A CN106351830A CN 106351830 A CN106351830 A CN 106351830A CN 201610980513 A CN201610980513 A CN 201610980513A CN 106351830 A CN106351830 A CN 106351830A
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- Prior art keywords
- pressure
- back pressure
- bent axle
- scroll compressor
- pressure cavity
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Classifications
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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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a scroll compressor. A back pressure cavity isolated from a pressure discharge space in a closed shell is arranged between a bracket and the whole pressure balancing side surface of a movable scroll plate opposite to a static scroll plate, and the back pressure cavity is communicated with a compression cavity through a pressure guide channel. In the scheme provided by the invention, by means of the pressure guide channel, the whole back pressure cavity is under the pressure environment of the compression cavity, so that balanced stressing of the movable scroll plate in the vertical direction is realized. Thus, overturning or friction of the movable scroll plate caused by uneven stressing is effectively avoided, and the self-adaptive performance of the scroll compressor with respect to working conditions is improved.
Description
Technical field
The present invention relates to Compressor Technology field is and in particular to a kind of scroll compressor.
Background technology
In air-conditioning refrigeration system, widely used is scroll compressor.Coolant enters orbiter by air entry
Engage in the compression chamber of molding with fixed scroll, orbiter revolves round the sun around bent axle under the driving of bent axle, makes the body of compression chamber
Amass and be gradually reduced, coolant forms high pressure refrigerant through the compression of compression chamber, then discharges to housing from the air vent of fixed scroll
In internal high pressure chest.
In current scroll compressor, equilibrium problem is always a key factor affecting screw compressor, respectively
Individual compression chamber pressure in compression process rises, and producing makes orbiter interior pressure detached with fixed scroll, and interior pressure can produce
Raw component vertically, so that tending between orbiter and fixed scroll separating vertically, causes orbiter to occur
Topple, high pressure refrigerant leaks from compression chamber, the compression effectiveness to coolant for the impact.
In order to prevent from producing gap between orbiter and fixed scroll, documents cn101672276b disclose one kind
Screw compressor, as shown in figure 1, in the bottom molding back pressure cavity of orbiter, the high pressure refrigerant through overcompression passes through outlet
(103) discharge fixed scroll, orbiter and fixed scroll are arranged on the top of compressor housing, the high pressure refrigerant of discharge will be to
Flowing underneath, orbiter is connected with bent axle, and high pressure refrigerant is by one thrust upwards of bent axle, and then makes orbiter
Centre (position of in figure hollow arrow) produces pressure at expulsion；Meanwhile, back pressure hole 206 is offered on orbiter, this
The coolant that Shi Wei is sufficiently compressed is by (the portion of in figure filled arrows of edge of the orbiter discharged by back pressure hole 206
Position), to one upwards thrust of edge of orbiter, i.e. intermediate pressure.Sealing ring is set between orbiter and bent axle
403, whole back pressure cavity is divided into by two chambers by sealing ring, thus giving whole one stable upwards thrust of back pressure cavity,
So that orbiter seals against on fixed scroll.
But, because the centre in back pressure cavity has pressure at expulsion, then there may be following point: if according to
Heavy load operating condition design back pressure, when compressor is in light load conditions and runs, because compression chamber internal pressure is more than aerofluxuss
Pressure, leads to back pressure in back pressure cavity less, and orbiter may be led to topple；Identical reason, if using the lightest
Load condition design back-pressure power, then can lead in final load condition, back pressure is larger, and excessive back pressure can make dynamic whirlpool
Friction and wear aggravation between capstan and fixed scroll；If adopting shoulder load operating condition design back pressure, also can only be suitable
Mitigate above-mentioned side effect it is impossible to fundamentally solve the problems, such as that back pressure adaptability is poor.
Content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome in orbiter back pressure cavity of the prior art due to depositing
In pressure at expulsion region, lead to the not strong defect of screw compressor adaptability for working condition.
For this reason, the present invention provides a kind of scroll compressor, comprising: closed shell；Support, is fixedly installed on described airtight
Enclosure interior；Fixed scroll, is fixedly installed on inside described closed shell, has and connects the suction tube stretching out described hermetic container
Suction chamber；Orbiter, is arranged in described closed shell and complements each other to form compression chamber with described fixed scroll；Power fills
Put, be arranged in described closed shell and be fixedly connected with described orbiter by bent axle；In described support and described dynamic vortex
Disk be provided with back between the whole balance pressure flank of described fixed scroll with discharge pressure space in described closed shell every
Exhausted back pressure cavity, described back pressure cavity is connected with described compression chamber by impulse passage.
Described bent axle passes through described support, is provided with sealing ring between described bent axle and described support.
Described sealing ring is arranged on the position that bent axle is cylindrical and described rack inner wall is adjacent.
Described sealing ring is arranged on the lower surface position adjacent with the upper surface of described support of bent axle.
Fix between described support and described fixed scroll and be tightly connected.
Described support is all fixed with the inner circle of described closed shell and is tightly connected with the cylindrical of described fixed scroll.
Oil supply gallery is set in described bent axle, and described oil supply gallery bottom is connected with the oil sump positioned at lower housing portion,
It is provided with reducing pressure by regulating flow device in described oil supply gallery.
Described dropping equipment is capillary tube.
Described dropping equipment is the helical-like path being arranged on above described oil supply gallery.
It is provided with the inducing QI with pressure-compensated valve to lead between discharge pressure space in described back pressure cavity and described closed shell
Road, passes through institute for opening when the back pressure of described back pressure intracavity is less than setting value and by the high pressure refrigerant of described enclosure interior
State pressure-compensated valve to be introduced in described back pressure cavity.
Described air guide channel is arranged on described bent axle.
Technical solution of the present invention, has the advantage that
1. the scroll compressor that the present invention provides, in described support with described orbiter back to described fixed scroll
It is provided with the back pressure cavity with discharge pressure space isolation in described closed shell, described back pressure cavity between whole balance pressure flank
Connected with described compression chamber by impulse passage.
In the scheme that the present invention provides, entirely described back pressure cavity is under the pressure environment of described compression chamber, in back pressure cavity
There is not the zone of action of pressure at expulsion, whole Pressure in Back-pressure Cavity can maintain dynamic equilibrium so that moving with the pressure of compression intracavity
The back of scroll plate stress balance in vertical direction.Thus efficiently avoid orbiter due to inclining that unbalance stress leads to
Cover or rub, improve the adaptive performance for operating mode for the screw compressor.
2. the scroll compressor that the present invention provides, described bent axle passes through described support, in described bent axle and described support
Between be provided with sealing ring.
By described sealing ring, whole back pressure cavity can be made to be in air-tight state, now back pressure cavity and the external world uniquely connect
Logical mode ensures that back pressure cavity and compression chamber for impulse passage it is ensured that the impact in the only compressed chamber of the pressure of back pressure intracavity
The dynamic equilibrium of interior pressure.
3. the scroll compressor that the present invention provides, sealing ring is arranged on the portion that bent axle is cylindrical and described rack inner wall is adjacent
Position.
The inner edge of sealing ring and outer rim act against on bent axle and support respectively, thus being effectively prevented below bent axle
The gap that high pressure refrigerant is passed through between bent axle and support enters in back pressure cavity, and the pressure in back pressure cavity is impacted.
4. the scroll compressor that the present invention provides, sealing ring is arranged on a lower surface of bent axle and the upper of described support
The adjacent position of end face.
High pressure refrigerant through overcompression can be expelled in closed shell by the upper end of fixed scroll, and now bent axle is in this
Under environment under high pressure, pressure suffered by bent axle is commonly greater than the pressure of back pressure intracavity.
If now sealing ring is arranged at bent axle lower surface, sealing ring apart from bent axle distance closer to now bent axle
The area of the high pressure refrigerant born will reduce, and then reduce high pressure refrigerant to altering active force on produced by bent axle, prevent bent axle
On alter, the stability of orbiter is impacted.
5. the scroll compressor that the present invention provides, fixes between described support and described fixed scroll and is tightly connected,
Thus the airtight performance it is ensured that back pressure cavity is sealed to the left and right sides of back pressure cavity.
6. the scroll compressor that the present invention provides, arranges oil supply gallery, described oil supply gallery bottom in described bent axle
Connect with the oil sump positioned at lower housing portion, described oil supply gallery is provided with reducing pressure by regulating flow device.
Oil sump is under environment under high pressure, by the pressure differential between oil sump and back pressure cavity by lubrication pressure to back pressure cavity,
But if connect oil supply gallery with back pressure cavity equipressure, then will destroy the Pressure behaviour balance between back pressure cavity and compression chamber.For
Solve the above problems, reducing pressure by regulating flow device be set in oil supply gallery, will spray after extreme pressure lubricant blood pressure lowering to back pressure cavity,
Thus by extreme pressure lubricant the impact to pressure in back pressure cavity be down to minimum.
7. the scroll compressor that the present invention provides, described dropping equipment is capillary tube.The diameter of capillary tube will be much smaller than
The diameter of oil supply gallery, after high pressure refrigerant enters capillary tube, because flow reduces, can play the effect of blood pressure lowering.
8. the scroll compressor that the present invention provides, described dropping equipment is the spiral being arranged on above described oil supply gallery
First class footpath.
, compared with traditional straight tube, path is longer for helical-like path, and air-flow will receive road in helical-like path internal motion
The resistance that footpath itself is brought, therefore can effectively act as the effect of blood pressure lowering.
9. the scroll compressor that the present invention provides, in described back pressure cavity and described closed shell discharge pressure space it
Between be provided with the air guide channel with pressure-compensated valve, for opening and by institute when the back pressure of described back pressure intracavity is less than setting value
The high pressure refrigerant stating enclosure interior is introduced in described back pressure cavity by described pressure-compensated valve.
Under conventional sense, described pressure-compensated valve is inoperative, but when impurity particle in compression chamber, impurity particle
Can be stuck between orbiter and fixed scroll, be susceptible in back pressure cavity the feelings such as back pressure is not enough or orbiter topples
Condition, now pressure-compensated valve unlatching, because pressure-compensated valve is connected with oil supply pipe, oil supply pipe is in extraneous environment under high pressure
In, therefore by high pressure compensation valve, the high pressure of bent axle lower end can be introduced, compensate back pressure.
10. the scroll compressor that the present invention provides, described air guide channel is arranged on described bent axle.Under nominal situation,
Air guide channel is not opened, and when Pressure in Back-pressure Cavity is not enough, pressure-compensated valve is opened, and now air guide channel is by oil supply gallery and back pressure
Chamber connects, and high pressure refrigerant can enter air guide channel by oil supply gallery, then flows in back pressure cavity.
Brief description
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to concrete
In embodiment or description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, below describe in
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the described scroll compressor mentioned in background technology；
The structural representation of the described scroll compressor that Fig. 2 provides for the present invention；
In the described screw compressor that Fig. 3 provides for the present invention, coolant flows to the signal of back pressure cavity process from compression chamber
Figure；
Fig. 4 removes the schematic diagram of support sealing means for the second bent axle providing in embodiment 1；
The schematic diagram of back pressure described in the described screw compressor that Fig. 5 provides for the present invention；
The structural representation of the described screw compressor for providing in embodiment 2 for the Fig. 6；
The structural representation of the described screw compressor for providing in embodiment 3 for the Fig. 7；
Description of reference numerals:
1- closed shell；2- support；3- fixed scroll；4- suction tube；5- orbiter；6- bent axle；61- oil supply gallery；
62- reducing pressure by regulating flow device；7- back pressure cavity；8- impulse passage；9- compression chamber；10- sealing ring；11- pressure-compensated valve；111- is spacing
Plug；112- steel ball；113- spring；12- air guide channel；13- orbiter bearing；15- air vent；16- oil sump；17- oil return is led to
Road；18- oil guide piece；19- base bearing；403- sealing ring；206- back pressure hole；
Specific embodiment
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described with the enforcement it is clear that described
Example is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of not making creative work, broadly falls into the scope of protection of the invention.
As long as additionally, the non-structure each other of involved technical characteristic in invention described below different embodiments
Become conflict just can be combined with each other.
Embodiment 1
The present embodiment provides a kind of scroll compressor, as shown in Figure 2, comprising: closed shell 1；Support 2, is fixedly installed
Inside described closed shell 1；Fixed scroll 3, is fixedly installed on inside described closed shell 1, have connection stretch out described close
Close the suction chamber of the suction tube 4 of container；Orbiter 5, be arranged in described closed shell 1 with described fixed scroll 3 phase interworking
Close and form compression chamber 9；Power set, are arranged in described closed shell 1 and are fixedly connected with described orbiter 5 by bent axle 6；
Be provided between described support 2 and described orbiter 5 are back to the whole balance pressure flank of described fixed scroll 3 with described
The back pressure cavity 7 of discharge pressure space isolation in closed shell 1, described back pressure cavity 7 passes through impulse passage 8 with described compression chamber 9 even
Logical.
During screw compressor work, suck cold media gas from suction chamber, after power set (motor) start, dynamic vortex
Disk 5 is driven and constrained by anti-rotation mechanism by bent axle 6, and bent axle 6 rotates on base bearing 19, around fixed scroll 3 basic circle center
Do the Plane Rotation of minor radius, and then produce high pressure-temperature gas in the gas compression room that orbiter 5 and fixed scroll 3 are formed
Body, this pressure high temperature hot gas is discharged into positioned at quiet with the drain valve being moved through positioned at fixed scroll 3 top of orbiter 5
In the high pressure chest of scroll plate 3 top, the coolant in high pressure chest can flow downward, eventually through the air vent 15 on closed shell 1
Discharge.Circulation said process, constantly can produce high temperature and high pressure gas in screw compressor.
In the present embodiment, by described impulse passage 8, make whole back pressure cavity 7 scope all in the intermediate pressure in compression chamber 9
Under force environment, as shown in figure 5, in figure pm represents back pressure it is seen that back pressure has acted on the back of the body of whole orbiter 5
Portion, now the pressure in back pressure cavity 7 and the pressure in compression chamber 9 can maintain dynamic equilibrium so that orbiter 5 is in vertical direction
Upper stress balance.Thus efficiently avoid orbiter 5 due to toppling of leading to of unbalance stress or rubbing, improve scroll compression
Contracting machine is for the adaptive performance of operating mode.
Specifically, it is filled with the coolant through overcompression in described compression chamber 9 and described back pressure cavity 7, when in compression chamber 9
When pressure is higher than the pressure in back pressure cavity 7, the coolant in compression chamber 9 will be extruded in back pressure cavity 7, and in such as Fig. 3, arrow guides
Direction.Conversely, when the pressure in back pressure cavity 7 is higher than compression chamber 9, coolant also can reverse flow.
Meanwhile, position on orbiter 5 for the impulse passage 8 is not limited to the position of mark in Fig. 1, due in compression chamber 9
The position with intermediate pressure in certain area, as long as so the position in compression chamber 9 with intermediate pressure all can set
Put impulse passage 8.
In the present embodiment, impulse passage 8 is arranged on the right side of orbiter 5, and as modification, impulse passage 8 can be arranged
The position symmetrical with impulse passage 8 center of circle on orbiter 5.
Specifically, as shown in figure 3, when the pressure that the pressure in compression chamber 9 is higher than in back pressure cavity 7, coolant passes through described
Impulse passage 8 flows to the right side of back pressure cavity 7 from compression chamber 9, then flows to described back pressure cavity 7 by orbiter bearing 13
Left side.
In the present embodiment, described bent axle 6 passes through described support 2, is provided with sealing between described bent axle 6 and described support 2
Circle 10.
By described sealing ring 10, whole back pressure cavity 7 can be made to be in air-tight state, now back pressure cavity 7 is unique with the external world
Mode of communicating be impulse passage 8 it is ensured that the impact in the only compressed chamber 9 of the pressure in back pressure cavity 7, ensure that back pressure cavity 7
Dynamic equilibrium with pressure in compression chamber 9.
Specifically, described sealing ring 10 is arranged on the position that bent axle 6 is cylindrical and described support 2 inwall is adjacent.Described bent axle 6
Cylindrical upper molding is fluted, and sealing ring 10 is arranged on inside grooves, and the outside of sealing ring 10 acts against the inwall of described support 2
On.
As shown in figure 4, as modification, described sealing ring 10 is arranged on a lower surface of bent axle 6 and the upper of described support 2
The adjacent position of end face.
High pressure refrigerant through overcompression can be expelled in closed shell 1 by the upper end of fixed scroll 3, now at bent axle 6
Under this environment under high pressure, the pressure suffered by bent axle 6 is commonly greater than the pressure in back pressure cavity 7.If sealing ring 10 is arranged on
At bent axle 6 lower surface, sealing ring 10 apart from bent axle 6 distance closer to the area of the high pressure refrigerant that bent axle 6 bears will reduce, and enter
And reduce high pressure refrigerant produced to bent axle 6 on alter active force, prevent the stability altered on bent axle 6 to orbiter 5 from causing
Impact.
Specifically, groove at molding on the upper surface of the lower surface of bent axle 6 or support 2, installs sealing ring 10 in groove.
In the present embodiment, fix between described support 2 and described fixed scroll 3 and be tightly connected.Thus to back pressure cavity 7
The left and right sides is sealed it is ensured that the airtight performance of back pressure cavity 7.
For back pressure cavity 7, support 2 is passed through on the top of back pressure cavity 7 and fixed scroll 3 is sealed, under back pressure cavity 7
Portion is sealed by the sealing ring 10 between bent axle 6 and support 2.So, the surrounding of back pressure cavity 7 will be in sealing state
Under, it is to carry out coolant convection current with compression chamber 9 under working condition to provide guarantee.
Embodiment 2
The present embodiment is done improvement on the basis of embodiment 1.
In the present embodiment, in described bent axle 6 arrange oil supply gallery 61, described oil supply gallery 61 bottom with housing
The oil sump 16 in portion connects, and is provided with reducing pressure by regulating flow device 62 in described oil supply gallery 61.
As shown in fig. 6, oil sump 16 is under environment under high pressure, will be lubricated by the pressure differential between oil sump 16 and back pressure cavity 7
Oil pressure, to back pressure cavity 7, but if oil supply gallery 61 is connected with back pressure cavity 7 equipressure, then will destroy back pressure cavity 7 and compression chamber 9
Between Pressure behaviour balance.In order to solve the above problems, reducing pressure by regulating flow device 62 is set in oil supply gallery 61, high pressure is moistened
Spray after lubricating oil blood pressure lowering to back pressure cavity 7, thus by extreme pressure lubricant the impact to pressure in back pressure cavity 7 be down to minimum.
Specifically, the lubricating oil in oil sump 16 travels up in oil supply gallery 61 first under pressure, first, profit
The oil guide piece 18 that lubricating oil passes through in oil sump 16 enters in oil supply gallery 61, flows all the way up in oil supply gallery 61, Ran Houliu
Move at reducing pressure by regulating flow device 62, the lubricating oil of high pressure will carry out blood pressure lowering herein, subsequently into orbiter 5 and bent axle 6 it
Between junction, hence in back pressure cavity 7.Meanwhile, described bent axle 6 and support 2 are additionally provided with drainback passage, lubrication more than needed
Oil will flow out bent axle 6 by drainback passage 17, flow back to again in oil sump 16.
Specifically, as shown in Fig. 2 described reducing pressure by regulating flow device 62 is capillary tube.The diameter of capillary tube will be much smaller than fuel feeding
The diameter of passage 61, after high pressure refrigerant enters capillary tube, because flow reduces, can play the effect of blood pressure lowering.
As modification, as shown in fig. 6, described reducing pressure by regulating flow device 62 is the spiral being arranged on described oil supply gallery 61 top
First class footpath., compared with traditional straight tube, path is longer for helical-like path, and air-flow will receive path in helical-like path internal motion
The resistance itself bringing, therefore can effectively act as the effect of blood pressure lowering.
Embodiment 3
The present embodiment is the improvement made on the basis of embodiment 1 and embodiment 2.
In the present embodiment, as shown in fig. 7, setting between discharge pressure space in described back pressure cavity 7 and described closed shell 1
Have the air guide channel 12 with pressure-compensated valve 11, for the back pressure in described back pressure cavity 7 be less than setting value when open and incite somebody to action
The high pressure refrigerant of described enclosure interior is introduced in described back pressure cavity 7 by described pressure-compensated valve 11.
In the present embodiment, air guide channel 12 can be shared it is also possible to be provided separately with drainback passage 17.
Under conventional sense, described pressure-compensated valve 11 is inoperative, but when impurity particle occurring in compression chamber 9,
Impurity particle enters in compression chamber 9, is stuck between orbiter 5 and fixed scroll 3, makes orbiter 5 with fixed scroll 3 each other
Disengage, occur orbiter 5 situations such as topple, now pressure-compensated valve 11 is opened, due to pressure-compensated valve 11 and oil supply pipe
Connect, oil supply pipe is in extraneous environment under high pressure, therefore by high pressure compensation valve, the high pressure of bent axle 6 lower end can be introduced,
Compensate back pressure.
Specifically, as shown in fig. 7, pressure-compensated valve 11 is arranged on bent axle 6 top, connect with back pressure cavity 7, including positioned at upper
The limit plunger 111 of side, positioned at the steel ball 112 of bottom, and is located at the spring 113 between limit plunger and steel ball, on the upside of steel ball
Air guide channel 12 is formed on bent axle 6, one end of air guide channel 12 connects back pressure cavity 7, and the other end connects oil supply gallery 61.Normally
Under state, steel ball can block air guide channel 12, when back pressure deficiency in back pressure cavity 7, due to the pressure of steel ball 112 lower section
Power is greater than the pressure above steel ball, and now spring 113 will be compressed, and air guide channel 12 is opened by steel ball, below steel ball
High pressure refrigerant by air guide channel 12 enter back pressure cavity 7 in, complete the pressurization to back pressure cavity 7.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.Right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (10)
1. a kind of scroll compressor, comprising:
Closed shell (1)；
Support (2), is fixedly installed on described closed shell (1) internal；
Fixed scroll (3), is fixedly installed on described closed shell (1) inside, has and connect the suction stretching out described hermetic container
The suction chamber of pipe (4)；
Orbiter (5), is arranged in described closed shell (1) and complements each other to form compression chamber with described fixed scroll (3)
(9)；
Power set, are arranged in described closed shell (1) and are fixedly connected with described orbiter (5) by bent axle (6)；
It is characterized in that:
Set between described support (2) and described orbiter (5) are back to the whole balance pressure flank of described fixed scroll (3)
It is equipped with the back pressure cavity (7) of the interior discharge pressure space isolation with described closed shell (1), described back pressure cavity (7) passes through impulse passage
(8) connect with described compression chamber (9), so that entirely described back pressure cavity (7) is under the pressure environment of described compression chamber (9).
2. scroll compressor according to claim 1 it is characterised in that described bent axle (6) pass through described support (2),
It is provided with sealing ring (10) between described bent axle (6) and described support (2).
3. scroll compressor according to claim 2 is it is characterised in that described sealing ring (10) is arranged on bent axle (6)
The adjacent position of cylindrical and described support (2) inwall.
4. scroll compressor according to claim 2 is it is characterised in that described sealing ring (10) is arranged on bent axle (6)
The lower surface position adjacent with the upper surface of described support (2).
5. the scroll compressor according to any one of claim 2-4 is it is characterised in that described support (2) is quiet with described
Fix between scroll plate (3) and be tightly connected.
6. the scroll compressor according to any one of claim 1-4 is it is characterised in that arrange in described bent axle (6)
Oil supply gallery (61), described oil supply gallery (61) bottom is connected with the oil sump positioned at lower housing portion, in described oil supply gallery (61)
In be provided with reducing pressure by regulating flow device (62).
7. scroll compressor according to claim 6 is it is characterised in that described reducing pressure by regulating flow device (62) is capillary
Pipe.
8. scroll compressor according to claim 6 is it is characterised in that described reducing pressure by regulating flow device (62) is to be arranged on
Helical-like path above described oil supply gallery (61).
9. the scroll compressor according to any one of claim 1-4 is it is characterised in that in described back pressure cavity (7) and institute
State and be provided with the air guide channel with pressure-compensated valve (11) (12), for described between the interior discharge pressure space of closed shell (1)
Back pressure in back pressure cavity (7) is less than during setting value to be opened and the high pressure refrigerant of described enclosure interior is passed through described pressure compensation
Valve (11) is introduced in described back pressure cavity (7).
10. scroll compressor according to claim 9 it is characterised in that described air guide channel (12) be arranged on described
On bent axle (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610980513.2A CN106351830B (en) | 2016-11-08 | 2016-11-08 | A kind of scroll compressor |
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|---|---|---|---|
| CN201610980513.2A CN106351830B (en) | 2016-11-08 | 2016-11-08 | A kind of scroll compressor |
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| CN106351830A true CN106351830A (en) | 2017-01-25 |
| CN106351830B CN106351830B (en) | 2019-01-22 |
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|---|---|---|---|---|
| JPS58122386A (en) * | 1982-01-13 | 1983-07-21 | Hitachi Ltd | Scroll compressor |
| CN201517504U (en) * | 2009-07-16 | 2010-06-30 | 上海日立电器有限公司 | Controllable structure of back pressure gas quality exchange |
| CN102472273A (en) * | 2009-09-02 | 2012-05-23 | 大金工业株式会社 | Scroll compressor |
| CN105370569A (en) * | 2014-08-26 | 2016-03-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor and air conditioner with same |
| CN205117718U (en) * | 2015-10-21 | 2016-03-30 | 广东美的暖通设备有限公司 | Be used for maintaining scroll compressor backpressure stable structure and scroll compressor |
| CN105298838A (en) * | 2015-11-23 | 2016-02-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor and regulation control method thereof |
| CN206280248U (en) * | 2016-11-08 | 2017-06-27 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of scroll compressor |
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| Publication number | Publication date |
|---|---|
| CN106351830B (en) | 2019-01-22 |
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