CN100464075C - Scroll compressor - Google Patents
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- CN100464075C CN100464075C CNB2006100089326A CN200610008932A CN100464075C CN 100464075 C CN100464075 C CN 100464075C CN B2006100089326 A CNB2006100089326 A CN B2006100089326A CN 200610008932 A CN200610008932 A CN 200610008932A CN 100464075 C CN100464075 C CN 100464075C
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Abstract
A scroll compressor includes a housing, a discharge passage, a rotary shaft, a fixed scroll, a movable scroll, an oil separator and an oil reservoir for compressing refrigerant gas containing lubricating oil. The housing has a rear housing which has a partition wall. The discharge passage is formed in the housing. The discharge passage has a discharge chamber, a discharge hole and an accommodation chamber. The discharge chamber and the accommodation chamber are communicated with each other through the discharge hole. The oil separator is provided in the accommodation chamber. The oil separator has a separation member and an oil reserved area. The oil reservoir is defined around an entire circumference of the partition wall which defines the discharge chamber therein. The oil reservoir is formed so as to communicate with the oil reserved area of the oil separator.
Description
Technical field
The present invention relates to a kind of scroll compressor, this scroll compressor has a plurality of removable and compression chambers that volume can reduce, the orbiting of the movable scroll by compressor is sucked into compression chamber with refrigerant gas from suction chamber, subsequently compression refrigerant gas and it is discharged in the discharge side in compression chamber.
Background technique
Traditional electric scroll compressor that is used for air conditioning equipment of car, its housing forms like this, promptly has front case with rear case and be connected to each other and be in the same place.Fixed scroll is fixed on the front case, and movable scroll is relative with fixed scroll, and two scroll are installed in the front case.In addition, have motor cavity in the front case, electric motor is arranged in this motor cavity.The lower end of front case is formed with suction passage, to be communicated with motor cavity.
Also have suction chamber in the front case, this suction chamber is shaped as by suction passage and is connected with motor cavity.When the central shaft rotation of the movable scroll of electric motor task driven around fixed scroll, a plurality of compression chambers that form between the two scroll spiral walls move towards the center of two vortex walls, and volume reduces simultaneously.In the moving of above-mentioned compression chamber, the refrigerant gas that is incorporated into suction chamber is introduced in the compression chamber from suction chamber by motor cavity and suction passage, thereby is compressed in compression chamber.
The cooled gas that compresses in compression chamber is discharged in the discharge side that is limited by fixed scroll and rear case in the housing.The cooled gas that is discharged to discharge side contains lubricant oil, and these lubricant oil circulate in housing and are used to drive the driving mechanism of movable scroll around the rotation of fixed scroll central shaft to lubricate.For the lubricant oil in electric scroll compressor inside is not brought into cooled gas in the external refrigeration loop of air conditioning equipment of car, in the discharge route of refrigerant gas, has an oil separator.The document of Japanese laid-open patent publication number 2004-301090 discloses an example.If lubricant oil is brought in the external cooling circuit, for example, lubricant oil bonds on the inner wall surface of gas cooler or vaporizer, thereby reduces the efficient of heat exchange.
The oil separator of above mentioning, for example, centrifugal oil separator, it causes centrifugation that lubricant oil and cooled gas are separated by rotatablely moving, thereby only cooled gas is introduced in the external cooling circuit.The lubricant oil of being separated from cooled gas by oil separator is returned in the back pressure cavity by a passage subsequently by in the interim lower part that is stored in oil separator, and the pressure of the pressure ratio discharge side in this chamber is low.The lubricant oil of lubricated driving mechanism is introduced in the oil conservator by a passage in back pressure cavity.Zone between fixed scroll and rear case, oil conservator are formed on the peripheral side of discharge side.
Simultaneously, the zone between fixed scroll and rear case, suction passage is formed in the lower part of discharge side peripheral side.Suction passage is centered on to prevent that the circuit refrigerant gas is leaked in the oil conservator in suction passage by a packing ring.Therefore, a discharge side peripheral side zone part is inhaled into passage and takies, and also only some is taken by oil conservator.Especially, oil conservator can only be fixed on the upper-side area of packing ring.
Summary of the invention
The present invention relates to a kind of scroll compressor, wherein the volume of oil conservator increases, to store more lubricating oil in oil conservator.
According to one aspect of the present invention, scroll compressor comprises housing, discharge route, running shaft, fixed scroll, movable scroll, oil separator and oil conservator, is used to compress the refrigerant gas that contains lubricant oil.Housing comprises front case and has the rear case of partition wall.Housing also has suction chamber.Discharge route is formed on the housing.Discharge route has discharge side, tap hole and receiving cavity.Discharge side and receiving cavity interrelate by tap hole.Running shaft is supported rotatably by housing.Fixed scroll is arranged in the housing.The fixed scroll spiral wall that fixed scroll has the fixed scroll substrate and extends from the fixed scroll substrate.Movable vortex substrate also is arranged in the housing and is relative with the fixed scroll substrate.The movable scroll spiral wall that movable scroll has movable vortex substrate and extends from movable vortex substrate.Determined constricted zone between the fixed scroll substrate of the movable vortex substrate of movable scroll and movable scroll spiral wall and fixed scroll and the fixed scroll spiral wall.Has oil separator in the receiving cavity.Oil separator has separation member and oil storage zone.Oil conservator is defined as the periphery around the whole isolated wall, thereby has determined in this partitioning wall that described discharge side is around described discharge side.Oil conservator is shaped as with the oil storage zone of oil separator and communicates.
To illustrate in conjunction with the drawings below, other aspects and advantages of the present invention and principle of the present invention will be described.
Description of drawings
It is novel that feature of the present invention is considered to, and illustrate in claims.The reader will be in conjunction with the drawings description of a preferred embodiment best understand objects and advantages of the present invention:
Fig. 1 is the schematic representation according to the electric scroll compressor of the preferred embodiments of the present invention;
Fig. 2 is the front elevation of the rear case of compressor;
Fig. 3 is the front elevation according to the rear case of the electric scroll compressor of an alternative embodiment of the invention.
Embodiment
Describe one according to the electric scroll compressor that is applied to air conditioning equipment of car external refrigerant loop of the present invention below in conjunction with accompanying drawing.In following explaining, the represented direction of Y1 arrow is the Vertical direction of electric scroll compressor 10 among Fig. 1, comprises direction up and down.The horizontal direction of the electric scroll compressor 10 that by Y2 arrow indication among Fig. 1 is comprises forward and direction backward.In the present embodiment, use carbon dioxide as the refrigeration agent in the external refrigerant loop.
As shown in Figure 1, the housing 11 of electric scroll compressor 10 comprises front case 12 and rear case 13.Front case 12 and rear case 13 interconnect.What axle supporting element 14 and fixed scroll 15 were fixed is assemblied in the housing 11.Detailed, axle supporting element 14 and fixed scroll 15 are positioned at the side (the perhaps rear side of front case 12) of front case 12 near rear case 13.The ear end face of the fixed scroll substrate 15a of the ear end face 12a of front case 12 and fixed scroll 15 is positioned at same plane.A pair of radial bearing 17 in the front case 12 and axle supporting element 14 be the opposite end of supporting rotating shaft 16 respectively.
Fixed scroll 15 comprises fixed scroll substrate 15a, periphery wall 15c and the fixed scroll spiral wall 15b that extends from the movable scroll 21 of fixed scroll substrate 15a in periphery wall 15c.Movable scroll 21 comprises movable vortex substrate 21a and the movable scroll spiral wall 21b that extends to fixed scroll 15 from movable vortex substrate 21a.A plurality of compression chambers 30 have been determined jointly between the movable vortex substrate 21a of the fixed scroll substrate 15a of described fixed scroll 15 and fixed scroll spiral wall 15b and described movable scroll 21 and the movable scroll spiral wall 21b.Compression chamber 30 is as constricted zone.The central axis that centers on fixed scroll 15 when movable scroll 21 carries out the track rotation according to running shaft 16, and counterweight 20 has been offset the centrifugal force that is produced by movable scroll 20 tracks rotation.
A plurality ofly be used to prevent that the cylindrical pin 25 of movable scroll 21 rotations is fixedly installed to a supporting element 14.Though used 3 or more pin in the present embodiment, only shown 1 among Fig. 1.Simultaneously, with the movably circumferencial direction setting of the movable vortex substrate 21a of scroll 21 of the same number of circular hole 21c edge of pin 25, to prevent the rotation of movable scroll 21.One end of each pin 25 all inserts among the corresponding hole 21c.
In front case 12, suction chamber 33 is limited between the most peripheral part of movable scroll spiral wall 21b of the periphery wall 15c of fixed scroll 15 and movable scroll 21.Motor cavity M is connected with the suction chamber 33 that forms in front case 12 downsides by suction passage 34.Motor cavity M is by an inhalation port 35 and compressor 10 exterior, and this inhalation port 35 forms in front case 12 ends (or front end).The external pipe (not shown) that is connected to the vaporizer of external refrigerant loop (not shown) is connected on the inhalation port 35.Therefore, low pressure refrigerant gas is guided to suction chamber 33 by inhalation port 35, motor cavity M and suction passage 34 from the external refrigerant loop.
In front case 12, back pressure cavity 41 is defined on the front side (movable scroll 21 is with respect to a side of fixed scroll 15) of the movable vortex substrate 21a of movable scroll 21.Back pressure cavity 41 forms in the rear surface of front surface and the axle supporting element 14 of movable vortex substrate 21a, just and between the front surface facing surfaces of movable vortex substrate 21a.
In rear case 13, partition wall 13a is used to separate the space in the rear case 13.Partition wall 13a is columniform, and opens wide towards fixed scroll substrate 15a.End wall 13b is formed in the nearly rear end of partition wall 13a.In rear case 13, discharge side 36 is limited between the fixed scroll substrate 15a of partition wall 13a, end wall 13b and fixed scroll 15.As shown in Figure 2, oil conservator 38 is defined in the rear case 13 around partition wall 13a entire circumference.That is to say that oil conservator 38 is limited at around the periphery of discharge side 36, thereby around discharge side 36.Like this, rear case 13 has had the border effect and has formed in the discharge side 36 of partition wall 13a inside, and the oil conservator 38 that forms in partition wall 13a outside.
The end wall 13b that forms discharge side 36 has the tap hole 13c that runs through formation.Rear case 13 has the front-end face 13d that forms on its outer wall, and this end face 13d is connected with the ear end face 12a of front case 12.Rear case 13 also has the front-end face 13e that forms on its inwall, and this end face 13e goes up the end face that is connected with the fixed scroll substrate 15a of fixed scroll 15 for partition wall 13a.End face 13d and end face 13e are positioned at same plane.Housing 11 is shaped as: the junction plane between the end face 13d of the end face 12a of front case 12 and rear case 13 is in the identical plane with junction plane between the end face 13e of the fixed scroll substrate 15a of fixed scroll 15 and rear case 13.
When running shaft 16 by electric motor 23 driven rotary, movable scroll 21 is by central axis (the perhaps axis L 1 of the running shaft 16) rotation of eccentric shaft 18 round fixed scroll 15.In the rotary course of running shaft 16, the peripheral surface of pin 25 contacts with hole 21c, and slides along the circumferential surface of hole 21c, thereby prevents the rotation of movable scroll 21, and carries out the orbiting of movable scroll 21.By the orbiting of movable scroll 21, the compression chamber 30 that is positioned on two scroll, 15,21 vortex wall 15b, the 21b peripheral side moves towards central side, and volume reduces simultaneously.Thereby the refrigerant gas that is incorporated into compression chamber 30 from suction chamber 33 is compressed.Compressed refrigerant is by discharging port 15d, pushing expulsion valve open and be discharged in the discharge side 36 because the volume of compression chamber 30 reduces.
In rear case 13, oil conservator 38 is defined around the entire circumference of discharge side 36 and passes through partition wall 13a.Being used for separating the state that the oil separator 52 of the lubricant oil that is contained in refrigerant gas is arranged in the rear case 13 makes the fixed scroll substrate 15a of oil separator 52 and fixed scroll 15 clamp discharge side 36.Like this, oil separator 52 is not to be shaped around discharge side 36 in rear case 13.Therefore, oil conservator 38 is shaped as, and is roughly identical along the length of axial direction with discharge side 36 along the lateral length of the oil conservator 38 of the axial direction (axial direction of axis L 1) of running shaft 16.
Connecting passage 43 is formed in the bottom of the downside or the partition wall 13a of rear case 13, thereby extends through partition wall 13a along the axial direction of running shaft 16.Like this, connecting passage 43 forms in the housing 11.Fig. 2 is for illustrating the front elevation of rear case 13 (front end one side) from fixed scroll substrate 15a one side.As shown in Figure 2, the part of the outer wall 42 of connecting passage 43 is at discharge side 36 internal shapings, thereby protrudes into discharge side 36.Connecting passage 43 through the outer wall 42 of discharge sides 36 and connecting passage 43 also as the part of partition wall 13a.A receiving groove 48 is absorbed on the end face 13e of partition wall 13a.
Receiving groove 48 comprises first receiving groove 46 and second receiving groove 47, first receiving groove 46 is configured as the annular groove on the end face 13e of partition wall 13a, and second receiving groove 47 is connected to little than first receiving groove 46 of the inside of first receiving groove 46 on the downside of partition wall 13a and diameter.Second receiving groove 47 is absorbed in the outer wall 42 of the end face 13e of partition wall 13a and connecting passage 43 along the periphery of connecting passage 43.In receiving groove 48, be equipped with sealing unit 49 by O type loop forming.Sealing unit 49 comprises first Sealing 44 and second Sealing 45.First Sealing 44 has circumferential shapes, is assemblied in first receiving groove 46.The inside of second Sealing 45 and first Sealing 44 forms as one, and has the diameter less than first Sealing 44, and is assemblied in second receiving groove 47.Like this, Sealing 49 forms a pair of O type ring (first Sealing 44 and second Sealing 45) with different-diameter and combines.
Under Sealing 49 was assemblied in state in the receiving groove 48, first Sealing 44 inserted in the middle of discharge side 36 and the oil conservator 38 around discharge side 36 in the radial direction running shaft 16, thereby prevented that discharge gas leakage in the discharge side 36 is in oil conservator 38.And, second Sealing 45 between the connecting passage 43 that inserts discharge side 36 and discharge side 36 inside in the radial direction of running shaft 16, thereby prevent that the refrigerant gas in the discharge side 36 from leaking in the connecting passage 43.
As shown in Figure 1, rear case 13 has cylindrical receiving cavity 50, and vertically extend at its rear portion at end wall 13.Receiving cavity 50 passes through the part that the external pipe (not shown) links to each other with the external refrigerant loop and forms the refrigerant gas discharge route.Receiving cavity 50 is in the downstream of discharge side 36 and the upstream in external refrigerant loop.Receiving cavity 50 is zones that a pressure is lower than discharge side 36.In receiving cavity 50, oil separator 52 is used for will being contained in lubricating oil separation the refrigerant gas from refrigerant gas.
Like this, oil separator 52 is assemblied in the receiving cavity 50, described receiving cavity 50 and discharge side 36 independent shapings, and be not positioned at discharge side 36 inside.Discharge side 36 and receiving cavity 50 only are shaped as and are interconnected by the tap hole 13c that passes end wall 13b extension.Tap hole 13c constitutes the part of refrigerant gas discharge route.Like this, discharge side 36, tap hole 13c and receiving cavity 50 have formed discharge route, and in this passage, the refrigerant gas that is discharged from from compression chamber 30 is discharged into the external refrigeration loop, and oil separator 52 is arranged in the receiving cavity 50 of this discharge route.
In addition, separator tube 53 is shaped as, and open to oil storage zone 54 its lower end, and open to outside refrigerant circuit its upper end.And separator tube 53 is assemblied among the receiving cavity 50, makes the opening of tap hole 13c to the side opening of separator tube 53.The refrigerant gas that enters receiving cavity 50 from discharge side 36 by tap hole 13c circulates in separator tube 53, thereby owing to the centrifugation of circular movement is separated lubricant oil from refrigeration agent agent gas.
Fall into oil storage zone 54 by the lubricant oil that uses separator tube from refrigerant gas, to separate, thereby be stored in the oil storage zone 54 that is arranged in receiving cavity 50 downsides to 53 centrifugations.Connecting passage 43 is opened to 54 bottoms, oil storage zone that are connected with oil storage zone 54.The oil storage zone 54 of oil separator 52 is shaped as by oil supply gallery and is communicated with back pressure cavity 41, described oil supply gallery comprises the opening between connecting passage 43, communication passage 55 and axle supporting element 14 and the movable scroll 21, and described communication passage 55 stretches at the periphery wall 15c that passes fixed scroll 15 in a lateral direction of compressor 10.The lubricant oil that is stored in the oil storage zone 54 is fed in the back pressure cavity 41 by oil supply gallery, and wherein the pressure in the back pressure cavity 41 is less than the pressure in the receiving cavity 50, and described oil supply gallery comprises the connecting passage 43 by the discharge side in the housing 11 36.
In above-mentioned electric scroll compressor 10, the higher pressure refrigerant gas of compression is discharged in the discharge side 36 in compression chamber 30.Second Sealing 45 inserts between discharge sides 36 and the connecting passage 43, thereby prevents that higher pressure refrigerant gas from leaking in the connecting passage 43 (oil supply gallery) that pressure is lower than discharge side 36.In addition, first Sealing 44 inserts in discharge sides 36 and the oil conservator 38, thereby prevents that higher pressure refrigerant gas from leaking in the oil conservator 38 that pressure is lower than discharge side 36.
The refrigerant gas that is discharged in the discharge side 36 is discharged in the receiving cavity 50 that pressure is higher than connecting passage 43 and oil conservator 38 by tap hole 13c.At this moment, the function of tap hole 13c is as throttle valve, reduce the sectional area that coolant gas passes the passage of this throttle valve, thereby speed up coolant gas enters the speed of receiving cavity 50.Therefore, refrigerant gas at full speed rotates around the separating pipe 53 of oil separator 52, thereby effectively isolates the lubricant oil that contains in the refrigerant gas from refrigerant gas.
From refrigerant gas, separate the inside of lubricant oil, and pass through the top directed outwards refrigerant circuit of receiving cavity 50 from the upper end open of separating pipe 53 from the low end opening process separating pipe 53 of separating pipe 53.Simultaneously, the lubricant oil of separating from refrigerant gas falls into oil storage zone 54, and stores in oil storage zone 54.The lubricant oil that is stored in the oil storage zone 54 is fed in the back pressure cavity 41 that pressure is lower than receiving cavity 50 by oil supply gallery with the refrigerant gas that enters oil storage zone 54 on a small quantity, and described oil supply gallery comprises connecting passage 43 and communication passage 55.Therefore, the pressure in the back pressure cavity 41 is adjusted, makes and is applied on the movable scroll 21 by the opposite power of the power that pressure caused in the compression chamber 30 (lower amount of refrigerant gas generation is arranged).Therefore, make the movable vortex substrate 21a of movable scroll 21 and the slip resistance between the axle supporting element 14 reduce, wherein said movable vortex substrate 21a slides on axle supporting element 14.
And, feed to the driving mechanism of movable scroll 21 orbitings of oil lubrication of back pressure cavity 41.In addition, the lubricant oil in the back pressure cavity 41 feeds in the oil conservator 38 that pressure is lower than back pressure cavity 41 by oil pumping passage 56.Should be noted that rear case 13 interior oil conservators 38 are shaped as the whole periphery around discharge side 36, oil conservator 38 is along the length and discharge side 36 same length in axial direction of the axial direction of running shaft 16 in addition.Like this, roughly the degree of depth with discharge side 36 is identical for the degree of depth of oil conservator 38.Therefore, oil conservator 38 is shaped as has larger volume, thereby can store a large amount of lubricant oil.Therefore, a large amount of lubricant oil of separating from refrigerant gas in oil separator 52 can not overflow from oil conservator 38, but is stored in the oil conservator 38.
The lubricant oil that is stored in a large number in the oil conservator 38 is sucked in the suction chamber 33 through drainback passage by the pumping action that orbiting caused by movable scroll 21.The lubricant oil that is sucked in the suction chamber 33 enters compression chamber 30, the slidingsurface in the lubricated compression chamber 30 of refrigerant gas.Isolated refrigerant gas enters suction chamber 33 from return-air duct from lubricant oil.
Scroll compressor according to present embodiment has following advantage.
(1) rear case 13 internal shapings have partition wall 13a, thereby define discharge side 36 in interior all sides of partition wall 13a, and define oil conservator 38 in the whole periphery of partition wall 13a.Therefore, be inhaled into a discharge side outer peripheral areas part described in " background technique " that passage occupies, all the other zones, the periphery of discharge side by oil conservator occupy situation compare, the volume that is positioned at the oil conservator 38 of discharge side 36 outer peripheral areas has increased.Therefore, even thereby described in having used the foregoing description utilize centrifugal separator from refrigerant gas, to isolate the oil separator 52 of lubricant oil efficiently the time, a large amount of lubricant oil also can be stored in the oil conservator 38.Like this, just prevented that lubricant oil from overflowing from oil conservator 38, and then prevented that the lubricant oil that stores in the oil storage zone 54 from entering the external refrigerant loop.Because a large amount of lubricant oil are stored in the oil conservator 38, a large amount of lubricant oil is fed to compression chamber 30 and is driven the driving mechanism that movable scroll 21 carries out orbiting and is lubricated.This makes that electric scroll compressor 10 can be by suitable sliding driving.
(2) second Sealings 45 are inserted between discharge side 36 and the connecting passage 43, and first Sealing 44 inserts in discharge side 36 and the oil conservator 38.Therefore, the refrigerant gas that is discharged to discharge side 36 from compression chamber 30 can not be leaked to connecting passage 43 and pressure and be lower than the oil conservator 38 of discharge side 36, but be directed in the receiving cavity 50, thereby make oil separator 52 can from refrigerant gas, isolate lubricant oil reliably.
(3) back pressure cavity 41 is connected with oil storage zone 54 by oil supply gallery, is defined in the housing 11 (rear case 13) and the connecting passage 43 that passes discharge side 36 in housing 11 (rear case 13) is shaped as the inboard of passing partition wall 13a on the axial direction of running shaft 16 and extends.Like this, because the outer wall 42 of connecting passage 43 is also as the part of partition wall 13a, thereby the space in the housing 11 (rear case 13) is utilized effectively.Therefore, for example, be shaped as the situation of passing oil conservator 38 with connecting passage 43 and compare, avoided because the situation that connecting passage 43 causes oil conservator 38 volumes to reduce.In addition, be independent of situation about being formed in outside the partition wall 13a in the discharge side 36 with connecting passage 43 outer walls 42 and compare, eliminated because the outer wall 42 of connecting passage 43 causes the volume of discharge side 36 to reduce.Therefore, the lubricant oil that is stored in the oil conservator 38 increases, and the efficient of electric scroll compressor 10 has also improved simultaneously.
(4) sealing unit 49 is articulated by first Sealing 44 and second Sealing 45 and forms.Therefore, after electric scroll compressor 10 assemblings, can be easy to single-piece Sealing 49 is provided on the rear case 13.Like this, separate the situation that is shaped and independently provides to rear case 13 with first Sealing 44 and second Sealing 45 of sealing unit 49 and compare, the manufacturing of electric scroll compressor 10 is easier.In addition, also avoid omission that Sealing 44 or 45 is provided on the rear case 13.Therefore, elimination causes undesirable effect to find to omit to some extent the inconvenience of formation because of discharging gas leakage after making electric scroll compressor 10.
(5) the end face 13e of the end face 13d of the rear case 13 that is connected with the ear end face 12a of front case 12 and the partition wall 13a that is connected with the fixed scroll substrate 15a of fixed scroll 15 is in same plane.Therefore, be connected with rear case 13, only end face 12a and fixed scroll substrate 15a need be positioned in the same plane in the front case 12 in order to make front case 12.Therefore, for example, not being positioned at conplane situation with the end face 13d of rear case 13 with end face 13e compares, do not need the end face 12a of front case 12 is positioned to be connected end face 13d, 13e respectively with the fixed scroll substrate 15a of rear case 15, thereby be convenient to fixed scroll 15 is fixed on operation in the front case 12.Therefore, the connection of front case 12 surface and rear case 13 are easy to the location, thereby have simplified the assembling of front case 12 and rear case 13.Simultaneously, the sealing between front case 12 and rear case 13 combination surfaces also forms reliably.In addition, for example, be shaped as the situation that more approaches front case 12 than end face 13d with the end face 13e of partition wall 13a and compare, rear case 13 can be easy to make.
The foregoing description can change by following mode.
In embodiment as shown in Figure 3, the outer wall 42 of connecting passage 43 can be contained in partition wall 13a.In this structure, rear case 13 can be easy to make.
In an embodiment, oil separator 52 is not limited to centrifugal oil separator, also can use the inertia-type oil separator from refrigerant gas lubricating oil separation to be come out, and for example, the wall surface of refrigerant gas and receiving cavity 50 is collided.Like this, oil separator its can form by the wall surface of receiving cavity 50 or the oil storage zone 54 of playing the separation member effect.
In an embodiment, oil conservator 38 can be shaped as the length (degree of depth) of the discharge side 36 that is shorter than axial direction along running shaft 16 axial length (degree of depth).
In an embodiment, first Sealing 44 of sealing unit 49 and second Sealing 45 can be formed separately.In this case, first receiving groove 46 and second receiving groove 47 are formed in the partition wall 13a, and are not interconnected, but independent shaping.
In an embodiment, can be formed with filter in the oil storage of oil separator 52 zone 54.
In an embodiment, tap hole 13c can be formed in the lateral parts of separating pipe 53.For example, tap hole 13c can be formed in the position that is lower than separating pipe 53.
In an embodiment, tap hole 13c can have the adjustable restrictive valve that forms in its inner circumferential surface.In this structure, being used for refrigerant gas can increase according to the increase of the flow velocity of refrigerant gas through the cross section of the passage of tap hole 13c.When the flow velocity of refrigerant gas was big, the flow through cross section of passage of tap hole 13c of refrigerant gas can increase, thereby reduced because the pressure loss that throttle valve caused, and had also increased the efficient in external refrigeration loop.On the other hand, when the flow velocity of refrigerant gas was very little, the flow through cross section of passage of tap hole 13c of refrigerant gas then reduced, thereby has clarified because the pressure gap between the throttle valve upstream and downstream that flow velocity causes.Like this, even the flow velocity of refrigerant gas is very little, the performance that separates the oil separator 52 of lubricant oil from refrigerant gas is guaranteed.
In an embodiment, chloro-fluoro-hydrocarbons can be used to as refrigerant gas.
Though above be described with reference to the accompanying drawings embodiments of the invention, and different variation, but need to understand, the invention is not restricted to these specific embodiments and modification thereof, those skilled in the art can also make different variations under the situation that does not depart from spirit of the present invention and scope, scope of the present invention is determined by following claims.
Claims (10)
1. scroll compressor that is used to compress the refrigerant gas that contains lubricant oil, comprise housing, discharge route, running shaft, fixed scroll, movable scroll, oil separator and oil conservator, housing has front case and rear case, housing also has suction chamber, discharge route is formed in the housing, discharge route has discharge side, tap hole and receiving cavity, wherein discharge side and receiving cavity are interconnected by tap hole, running shaft is by the support of housing rotation, fixed scroll is arranged in the housing, the fixed scroll spiral wall that fixed scroll has the fixed scroll substrate and extends from the fixed scroll substrate, movable scroll also is arranged in the housing to face fixed scroll, the movable scroll spiral wall that movable scroll has movable vortex substrate and extends from movable vortex substrate, wherein define constricted zone between the fixed scroll substrate of the movable vortex substrate of movable scroll and movable scroll spiral wall and fixed scroll and the fixed scroll spiral wall, oil separator is arranged in the receiving cavity, oil separator has separation member and oil storage zone, and described scroll compressor is characterised in that:
Rear case has partition wall, and oil conservator is limited around the entire circumference of partition wall in it, thereby described partition wall limits described discharge side around described discharge side in it, and described oil conservator is shaped as with the oil storage zone of oil separator and is connected.
2. scroll compressor as claimed in claim 1, it is characterized in that: a back pressure cavity is limited to a relative side that is positioned at fixed scroll in the movable scroll, this back pressure cavity is shaped as by an oil supply gallery and is connected with the oil storage zone of oil separator, and at least a portion that forms the wall of oil supply gallery in the rear case is also as the part partition wall.
3. scroll compressor as claimed in claim 2 is characterized in that: described oil supply gallery comprises connecting passage, and the wall of connecting passage forms in the discharge side, and connecting passage is configured as and passes described discharge side.
4. scroll compressor as claimed in claim 2 is characterized in that: described oil supply gallery comprises connecting passage, and the wall of connecting passage is contained in the partition wall.
5. scroll compressor as claimed in claim 2, it is characterized in that: described oil supply gallery comprises connecting passage, back pressure cavity is shaped as by the oil pumping passage and is connected with oil conservator, compressor also comprises first Sealing that is used for sealing between discharge side and oil conservator, and second Sealing that is used for sealing between connecting passage and discharge side.
6. scroll compressor as claimed in claim 5 is characterized in that: described first Sealing and second Sealing are one.
7. scroll compressor as claimed in claim 5 is characterized in that: described first Sealing has round-shaped, the inside combination of second Sealing and first Sealing, and have diameter less than first Sealing.
8. scroll compressor as claimed in claim 1 is characterized in that: described rear case has end face that is formed on its periphery wall and the end face that is formed on the partition wall, and these two end faces are positioned in the same plane.
9. scroll compressor as claimed in claim 1 is characterized in that: described oil separator is made of centrifugal separator.
10. scroll compressor as claimed in claim 1 is characterized in that: use carbon dioxide as refrigerant gas.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005003941 | 2005-01-11 | ||
| JP2005003941 | 2005-01-11 | ||
| JP2005302198 | 2005-10-17 |
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| CN1807892A CN1807892A (en) | 2006-07-26 |
| CN100464075C true CN100464075C (en) | 2009-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100089326A Active CN100464075C (en) | 2005-01-11 | 2006-01-10 | Scroll compressor |
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| CN111271286B (en) * | 2018-12-04 | 2022-09-09 | 盾安环境技术有限公司 | Compressor |
| CN111287979B (en) * | 2018-12-06 | 2022-09-09 | 盾安环境技术有限公司 | Compressor |
| CN112145412B (en) * | 2019-06-28 | 2023-01-20 | 丹佛斯商用压缩机公司 | Scroll compressor provided with orbital disc lubrication system |
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| US4470778A (en) * | 1980-11-10 | 1984-09-11 | Sanden Corporation | Scroll type fluid displacement apparatus with oil separating mechanism |
| US5683237A (en) * | 1994-06-24 | 1997-11-04 | Daikin Industries, Ltd. | Horizontal type scroll compressor having inlet ports at an upper level of the casing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102072159A (en) * | 2011-03-08 | 2011-05-25 | 上海威乐汽车空调器有限公司 | Oil line structure of automotive air conditioning scroll compressor |
| CN102072159B (en) * | 2011-03-08 | 2013-04-10 | 上海威乐汽车空调器有限公司 | Oil line structure of automotive air conditioning scroll compressor |
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|---|---|
| CN1807892A (en) | 2006-07-26 |
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