CN204357703U - A kind of scroll compressor - Google Patents
A kind of scroll compressor Download PDFInfo
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- CN204357703U CN204357703U CN201420838560.XU CN201420838560U CN204357703U CN 204357703 U CN204357703 U CN 204357703U CN 201420838560 U CN201420838560 U CN 201420838560U CN 204357703 U CN204357703 U CN 204357703U
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- orbiter
- oil groove
- communicated
- oily passage
- fixed scroll
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Abstract
The utility model discloses a kind of scroll compressor, in the process of orbiter revolution, within the entrance drawing oily passage runs to sealed member, be communicated with the first back pressure space, or run to beyond sealed member and be communicated with the second back pressure space; The outlet of drawing oily passage run to there is oil groove angle range in time, be namely communicated with it, or run to there is no oil groove scope in time, namely disconnect connection; Different mode of communicating is switched by above-mentioned cooperation of drawing oily passage and oil groove, lubricant oil can be controlled, thus can tilting moment be reduced, and when gas separaion power is larger, reduce Separating force, and when gas separaion power is less, increase Separating force, thus make the running of orbiter more steady, and in whole operating range, the impacting force between orbiter and fixed scroll is moderate.Compared with existing structure, the utility model can improve the sealability of scroll compressor, reduces frictional loss, orbiter steadily, is reliably operated.
Description
Technical field
The utility model relates to Compressor Technology field, particularly a kind of scroll compressor.
Background technique
In scroll compressor, orbiter and fixed scroll engagement form several compression chamber.Because each compression chamber pressure is different, the gas force therefore acting on orbiter scrollwork tooth wall can produce a tilting moment that orbiter is overturn.This tilting moment makes orbiter operate and becomes steady, and adds the risk of compression chamber leakage.For balance tilting moment, a counterpressure making orbiter compress fixed scroll vertically can be set usually.But the power that this counterpressure is normally constant within a service cycle of orbiter, the size of tilting moment then constantly changes with crank angle.For anti-arresting disc topples, the design of counterpressure need design by tilting moment maximum value, like this when tilting moment is less, can increase the frictional loss between orbiter and fixed scroll because counterpressure is excessive.
Application number is the Chinese patent of 03801581.1, proposes to offer high pressure oil groove at fixed scroll, and the pressure utilizing high pressure oil to produce is to balance tilting moment; But oil is drawn at this patent driven disc sliding bearing place, draw oily feeder connection place and be in high pressure conditions always, its choke pressure is difficult to control, and easily causes too much oil to enter oil groove, the Separating force of orbiter and fixed scroll is increased, causes compression chamber to leak.
Therefore, for above-mentioned situation, how to solve the problem that the running caused because of tilting moment in orbiter operation process is unstable, sealability declines, become the important technological problems that those skilled in the art are urgently to be resolved hurrily.
Model utility content
In view of this, the utility model provides a kind of scroll compressor, has higher sealability, can reduce frictional loss, and orbiter steadily, is reliably operated.
For achieving the above object, the utility model provides following technological scheme:
A kind of scroll compressor, comprise closed shell and be arranged on pump assembly wherein, described pump assembly comprises orbiter, fixed scroll, sealed member and upper bracket, by sealed member isolation formation two spaces between boss inside the lower end surface of described orbiter and described upper bracket, be respectively the first higher back pressure space of pressure and lower the second back pressure space of pressure;
It is characterized in that, offer the oil groove of arc in the end that described orbiter is relative with described fixed scroll;
Offer in described orbiter and draw oily passage, described in draw oily passage entrance be opened in the lower end surface of described orbiter, can be communicated with described first back pressure space or described second back pressure space; Described outlet of drawing oily passage is opened in described orbiter upper-end surface, can be communicated with described oil groove intermittence.
Preferably, at the first angle range, described in draw the entrance running of oily passage to being communicated in described second back pressure space, described in draw oily passage outlet disconnect with described oil groove and being communicated with;
At the second angle range, described in draw the entrance running of oily passage to being communicated in described first back pressure space, described in draw oily passage outlet be communicated with described oil groove;
Method of three turning angles scope outside first and second angle range, described in draw the entrance running of oily passage to being communicated in described second back pressure space, described in draw oily passage outlet be communicated with described oil groove.
Preferably, run to gas separaion power and tilting moment all reaches the corner of maximum value for zero degree position with the center of described orbiter, described first angle range is in-45 degree and the interval of 45 degree; Described second angle range be in 45 degree with the interval of 270 degree; Described method of three turning angles scope be in 270 degree with the interval of 315 degree.
Preferably, described oil groove is opened in the outer rim end face of described fixed scroll, and described oil groove 13 comprises grooving; The grooving intermittence of described outlet and described oil groove of drawing oily passage is communicated with.
Preferably, described oil groove is the arc-shaped slot concentric with described fixed scroll.
Preferably, described oil groove is opened in the upper-end surface of described orbiter, also offer one section of additional channel and grooving at the outer rim end face of described fixed scroll, and in described orbiter operation process, one end of described oil groove is communicated with the grooving on described fixed scroll all the time.
Preferably, described oil groove is the arc-shaped slot concentric with described orbiter; Described additional channel and grooving are the arc-shaped slot concentric with described fixed scroll.
As can be seen from above-mentioned technological scheme, the scroll compressor that the utility model provides, in the process of orbiter revolution, by drawing the different fit systems of oily passage and oil groove, can lubricant oil be controlled, thus can tilting moment be reduced, and when gas separaion power is larger, reduce Separating force, and when gas separaion power is less, increase Separating force, thus make the running of orbiter more steady, and in whole operating range, the impacting force between orbiter and fixed scroll is moderate.Compared with existing structure, the utility model can improve the sealability of scroll compressor, reduces frictional loss, orbiter steadily, is reliably operated.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The scroll compressor longitudinal sectional drawing that Fig. 1 provides for the utility model embodiment;
Gas force change schematic diagram suffered by the orbiter that Fig. 2 provides for the utility model embodiment;
Fig. 3 is the utility model first embodiment first angle range fixed scroll worm's eye view;
Fig. 4 is the utility model first embodiment second angle range fixed scroll worm's eye view;
Fig. 5 is the utility model first embodiment method of three turning angles scope fixed scroll worm's eye view;
Fig. 6 is the utility model first angle range compressor longitudinal sectional drawing;
Fig. 7 is the utility model second angle range compressor longitudinal sectional drawing;
Fig. 8 is the utility model second embodiment fixed scroll worm's eye view.
Wherein, 1 is closed shell, 2 is motor stator, 3 is rotor, 4 is lower support frame, 5 is oil pump, 6 is bent axle, oilhole centered by 6a, 6b is eccentric part, 7 is bearing, 8 is orbiter, 8a is orbiter substrate, 8b is vortex shape tooth, 9 is fixed scroll, 9a is the outer rim end face of fixed scroll, 9b is vortex shape tooth, 10 is sealed member, 11 is the first back pressure space, 12 is the second back pressure space, 13 is oil groove, 13a is grooving, 14 for drawing the outlet of oily passage, 15 for drawing oily passage, 16 for drawing the entrance of oily passage, 17 is throttling pin, 18 is cross slip-ring.
Embodiment
The utility model discloses a kind of scroll compressor, there is higher sealability, can frictional loss be reduced, orbiter steadily, is reliably operated.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the scroll compressor that the utility model embodiment provides comprises the closed shell 1 forming certain inner space; Suck in the inner space being arranged on closed shell 1, compression and discharge the pump assembly of cold media air, mainly comprise the fixed scroll 9 and orbiter 8 that form compression chamber, and prevent the cross slip-ring 18 of orbiter 8 rotation; Be used for driving electric machine assembly and the axle module of scroll 8 in the inner space being arranged on closed shell 1; In order to support upper bracket 16 and the lower support frame 4 of scroll and axle module; In order to provide the oil feed pump 5 of lubricant oil to moving element.
The top of closed shell 1 arranges upper bracket 19 and fixes the mode such as to weld with closed shell 1, places fixed scroll 9 in the upper-end surface of upper bracket 19.Fixed scroll 9 there is end face 9a and vortex shape tooth 9b, keep sealing state with the upper-end surface close contact of upper bracket 19 outside end face 9a.Orbiter 8 is provided with between upper bracket 19 and fixed scroll 9.This orbiter 8 has substrate 8a and can engage with the vortex shape tooth 9b of fixed scroll 9 the vortex shape tooth 8b forming compression chamber.Formation two spaces are isolated by sealed member 10, the first back pressure space 11 that namely pressure is higher and lower the second back pressure space 12 of pressure between boss inside the side (lower end surface namely in figure) that orbiter substrate 8a is contrary with vortex shape tooth 8b and upper bracket 19.
The middle part of closed shell 1 is provided with motor stator 2, and has been pressed into the rotor 3 of bent axle 6.The upper end eccentric part 6b of bent axle 6 is assemblied in the tail bearing 7 of orbiter 8.The bottom of closed shell 1 is provided with lower support frame 4, swings in order to limit bent axle 6.The bottom of lower support frame 4 is equipped with oil pump 5.Oil pump 5 upwards provides lubricant oil via the center oilhole 6a of bent axle 6, and lubricant oil enters the first back pressure space 11 along the gap between eccentric part 6b and bearing 7 after arriving oilhole 6a top, center, and is full of this space gradually.Then, sub-fraction lubricant oil can enter the second back pressure space 12 through sealed member 10, and finally enters compression chamber, plays the effect of lubrication and sealing scroll.Major part lubricant oil is got back to bottom compressor along seal casinghousing 1 inwall after flowing downward and lubricating other axle system moving element.
During compressor operation, motor driven crankshafts 6 rotates, and bent axle 6 moves with orbiter 8.Under the restriction of cross slip-ring 18, orbiter 8 does translational motion around bent axle 6 axle center with fixing radius, thus produces several mutually isolated and volume continually varying compression chamber between vortex shape tooth 8b, 9b at orbiter 8 and fixed scroll 9.Compression chamber will be discharged to the inner space of closed shell 1 after the refrigerant compression of suction.Because refrigeration agent is compressed at compression chamber, pressure raises, and will produce an axial force that orbiter 8 is separated with fixed scroll 9, and the substantially horizontal power perpendicular to orbiter 8 vortex shape tooth 8b tooth wall.Axial force can make orbiter 8 away from fixed scroll 9, and horizontal force then can produce a tilting moment that orbiter 8 is overturn, and both all can cause orbiter 8 to be separated with fixed scroll 9, causes the leakage of compression chamber inner refrigerant, hydraulic performance decline.
In order to limit this separation, the counterpressure of middle pressure higher than pressure of inspiration(Pi) can being introduced at the substrate 8a back side of orbiter 8, relying on counterpressure by orbiter 8 by being pressed on fixed scroll 9.Namely two back pressure spaces are formed by sealed member 10: the first back pressure space 11 communicates with the Exhaust Gas after compression, and pressure is substantially equal to exhaust pressure Pd; Second back pressure space 12 and air-breathing or compress intracavity gas and communicate, pressure is substantially equal to a certain pressure P b between pressure of inspiration(Pi) Ps or suction, exhaust pressure.Back pressure space produce counterpressure by orbiter 8 tightly by being pressed on fixed scroll 9.But in orbiter 8 rotary course, the gas force size that it is subject to is constantly change.As shown in Figure 2, in one cycle, axial separation force Fa and tilting moment Mt can reach maximum value or minimum value mutually in the same time.Meet the counterpressure of the excellent sealing when the Separating force maximum moment like this, inevitable superfluous at Separating force minimal instant.Compressor operation in different operating mode time also have same problem, if back pressure design can make compressor can excellent sealing under low voltage difference operating mode, then when High Pressure Difference operating mode, counterpressure can be superfluous.The friction and wear caused between orbiter 8 and fixed scroll 9 increases by counterpressure surplus, affects Performance And Reliability.In addition, in a period of rotation of orbiter 8, counterpressure is a steady state value substantially, and tilting moment then with rotation constantly change, can cause orbiter 8 galloping like this, cause noise and vibration, increase.
For solving the problem, the utility model embodiment provides a kind of scroll compressor, the pump assembly comprising closed shell 1 and be arranged on wherein, this pump assembly comprises orbiter 8, fixed scroll 9, sealed member 10 and upper bracket 19, isolate formation two spaces by sealed member 10 between boss inside the lower end surface of orbiter 8 and upper bracket 19, be respectively the first higher back pressure space 11 of pressure and lower the second back pressure space 12 of pressure; Specifically can according to shown in description above and Fig. 1;
Its core improvement is, offers the oil groove 13 of arc in the end that orbiter 8 is relative with fixed scroll 9;
Offer in orbiter 8 and draw oily passage 15, the entrance 16 drawing oily passage 15 is opened in the lower end surface of orbiter 8, can be communicated with the first back pressure space 11 or the second back pressure space 12; The outlet 14 of drawing oily passage 15 is opened in orbiter 8 upper-end surface (end face near fixed scroll 9), can be communicated with oil groove 13 intermittence.
As can be seen from above-mentioned technological scheme, the scroll compressor that the utility model embodiment provides, in the process that orbiter 8 revolves round the sun, by drawing the different fit systems of oily passage 15 and oil groove 13, lubricant oil can be controlled, thus can tilting moment be reduced, and when gas separaion power is larger, reduce Separating force, and when gas separaion power is less, increase Separating force, thus make the running of orbiter 8 more steady, and in whole operating range, the impacting force between orbiter 8 and fixed scroll 9 is moderate.Compared with existing structure, the utility model can improve the sealability of scroll compressor, reduces frictional loss, orbiter 8 steadily, is reliably operated.
The entrance 16 drawing oily passage 15 is communicated with the first back pressure space 11 or the second back pressure space 12, and whether the outlet 14 of drawing oily passage 15 is communicated with oil groove 13, can obtain the oil circuit mode of four kinds of lubricant oil.According to the working principle of scroll compressor, its gas separaion power is consistent with the Changing Pattern of tilting moment substantially, all can reach maximum value and minimum value at the same time; Correspond to the movement locus of bent axle 6, for its turn to specific angle time, and each circle cycle in only run to some corners time just can reach above-mentioned maximum value or minimum value, can with reference to shown in Fig. 2.
In the specific embodiment that this programme provides, according to the above-mentioned characteristics of motion, the angle range of bent axle 6 is divided into three parts, respectively the different situations of corresponding gas separaion power and tilting moment:
At the first angle range θ 1 (gas separaion power and tilting moment reach maximum value), the entrance 16 drawing oily passage 15 operates to being communicated in the second back pressure space 12, and the outlet 14 of drawing oily passage 15 disconnects with oil groove 13 and being communicated with.Because oil groove 13 is no longer communicated with other parts, the lubricant oil retained in it is taken out of along with the motion of orbiter 8, Pressure Drop in oil groove 13 is low to moderate negative pressure state (pressure relative to the second back pressure space 12), orbiter 8 is just inhaled to fixed scroll 9 by this negative pressure, tilting moment is suppressed, and orbiter 8 topples more difficult.In addition, be now communicated with the second back pressure space 12 being in low-pressure state owing to drawing oily passage 15, the pressure in it is lower, greatly can be decreased through and draw oily passage 15 to the leakage of the sealing surface between orbiter 8 and fixed scroll 9, add sealability.
At the second angle range θ 2, the entrance 16 drawing oily passage 15 operates to being communicated in the first back pressure space 11, and the outlet 14 of drawing oily passage 15 is communicated with oil groove 13.Extreme pressure lubricant in first back pressure space 11 enters oil groove 13 via drawing oily passage 15, and oil groove 13 is in high pressure conditions.Due in the second angle range θ 2, gas separaion power and tilting moment reduce, and counterpressure is superfluous.Extreme pressure lubricant now in oil groove 13 produces one and pushes orbiter 8 reaction thrust open, and originally superfluous counterpressure is weakened, so the pressing force between orbiter 8 and fixed scroll 9 keeps moderate.Meanwhile, because the lubricant oil in oil groove 13 can take each rubbing surface to along with the running of orbiter 8, can lubrication effect be improved and reduce the leakage loss of micro-gap.
Method of three turning angles range Theta 3 outside first and second angle range, the entrance 16 drawing oily passage 15 operates to being communicated in the second back pressure space 12, and the outlet 14 of drawing oily passage 15 is communicated with oil groove 13.Within the scope of the method for three turning angles, gas separaion power and tilting moment will level off to maximum value.The oily feeder connection 16 that draws on orbiter 8 runs to the second back pressure space 12 being in low-pressure state, draws oily channel outlet 14 and is communicated with oil groove grooving 13.When orbiter 8 has just entered method of three turning angles range Theta 3, oil groove 13 is still in high pressure conditions, so the high pressure oil in oil groove 13 just enters the second back pressure space 12 of low pressure by drawing oily passage 15, the oil pressure of oil groove 13 reduces rapidly, the formation speed of negative pressure in oil groove 13 when so both can accelerate to enter method of three turning angles scope, extreme pressure lubricant too much in oil groove 13 can be avoided again to be brought to air aspiration cavity, to cause refrigerant suction to cross thermal loss.
Certainly, according to actual needs, the angle range of other model split bent axles 6 can also be adopted, such as the second above-mentioned angle range θ 2 and/or method of three turning angles range Theta 3 are split as multiple further.As preferably, can control by throttling pin 17 flow drawing lubricant oil in oily passage 15, to provide the pressure regulative mode of more horn of plenty, be convenient to the different situations tackling gas separaion power and tilting moment.
As shown in Fig. 3-Fig. 7, in this programme, O1, O2 are respectively the center of fixed scroll 9 and the center of orbiter 8, run to gas separaion power with the center O2 of orbiter 8 and tilting moment all reaches the corner of maximum value for zero degree position (in Fig. 3 Y-direction top), the first angle range θ 1 is roughly in-45 degree and the interval of 45 degree; Second angle range θ 2 be roughly in 45 degree with the interval of 270 degree; Method of three turning angles range Theta 3) outside first and second angle range, be roughly in 270 degree with the interval of 315 degree.
In the specific embodiment that this programme provides, as shown in Fig. 3-Fig. 7, drawing oily passage 15 is straight line type, but not radially, its entrance 16 is more near the center O2 of orbiter 8 compared with outlet 14; Entrance 16 is moderate to the distance of orbiter 8 center O2, enters in good time or leave the scope that sealed member 10 correspondence surrounds in the process that can revolve round the sun at orbiter 8.
About the structure of oil groove 13, in first embodiment that the utility model provides, oil groove 13 is opened in the outer rim end face 9a of fixed scroll 9, and oil groove 13 comprises an erose grooving 13a, and its radial width is greater than other parts of oil groove 13; The grooving 13a intermittence of the outlet 14 and oil groove 13 of drawing oily passage 15 is communicated with.
In order to optimize above-mentioned technological scheme further, oil groove 13 is the arc-shaped slot concentric with fixed scroll 9, and the central angle of its correspondence is 270 degree, for being communicated with outlet 14 intermittence of drawing oily passage 15.
In second embodiment that the utility model provides, oil groove 13 is opened in the upper-end surface of orbiter 8, and also offer one section of additional channel and grooving 13a at the outer rim end face 9a of fixed scroll 9, its radial width is greater than other parts of oil groove 13; And in orbiter 8 operation process, one end of oil groove 13 is communicated with the grooving 13a on fixed scroll 9 all the time.Other structure of the present embodiment is identical with first embodiment, and oil groove 13, grooving 13a are also identical with first embodiment with the performance characteristic of drawing oily passage 15.Oil groove 13 is arranged on orbiter 8 by the present embodiment, and the lubricant oil centre of effort in oil groove 13 can move by compliant scroll dish 8 together, and orbiter 8 therefore can be made stressed more steady.
In order to optimize above-mentioned technological scheme further, oil groove 13 is the arc-shaped slot concentric with orbiter 8, and oil groove 13 is to the distance of orbiter 8 center O2, is greater than the distance of vortex shape tooth 8b to orbiter 8 center O2; Additional channel and grooving 13a are the arc-shaped slot concentric with fixed scroll 9, and its structure can with reference to shown in Fig. 8.
Below in conjunction with specific works process, model utility this programme is described further:
First embodiment:
Scroll compressor has fixed scroll 9 and the orbiter 8 of the several compression chamber of engageable formation.Fixed scroll 9 there is outer rim end face 9a and vortex shape tooth 9b.Orbiter 8 has substrate 8a and can engage with the vortex shape tooth 9b of fixed scroll 9 the vortex shape tooth 8b forming compression chamber.Formation two spaces are isolated by sealed member 10, the first back pressure space 11 that namely pressure is higher and lower the second back pressure space 12 of pressure between boss inside the side that orbiter substrate 8a is contrary with vortex shape tooth 8b and upper bracket 19.There is a large amount of lubricant oil in first back pressure space 11, and communicates with the Exhaust Gas after compression, and pressure is substantially equal to exhaust pressure Pd; Second back pressure space 12 and air-breathing or compress intracavity gas and communicate, pressure is substantially equal to a certain pressure P b between pressure of inspiration(Pi) Ps or suction, exhaust pressure.
The outer rim end face 9a of fixed scroll 9 offers the oil groove 13 of an arc, and oil groove 13 comprises an erose grooving 13a.Orbiter 8 is offered one and draws oily passage 15, the entrance 16 drawing oily passage 15 is opened in orbiter substrate 8a on the end face of back pressure side, is communicated with the first back pressure space 11 or the second back pressure space 12; The outlet 14 of drawing oily passage 15 is opened on the end face of orbiter substrate 8a scroll wrap side, is communicated with the grooving 13a intermittence of fixed scroll oil groove 13.
The working procedure of the utility model first embodiment is described for Fig. 3-7 below.As shown in Figure 3, O1, O2 are respectively the center of fixed scroll 9 and the center of orbiter 8.Corner when running to Y-direction top with O2 is for zero degree position, and now gas separaion power and tilting moment all reach maximum value.θ 1 is the first angle range, comparatively large in this angle range gas separaion power and tilting moment, and θ 1 is roughly in-45 degree and the interval of 45 degree.At the first angle range, orbiter draws oily feeder connection 16 and runs to the second back pressure space 12 (radial direction being positioned at beyond sealed member 10), and orbiter draws oily channel outlet 14 and disconnects with fixed scroll oil groove grooving 13a and being communicated with.Because fixed scroll oil groove 13 is no longer communicated with other parts, the lubricant oil retained in it is taken out of along with the motion of orbiter 8, Pressure Drop in oil groove 13 is low to moderate negative pressure state (pressure relative to the second back pressure space 12), orbiter 8 is just inhaled to fixed scroll 9 by this negative pressure, tilting moment is suppressed, and orbiter 8 topples more difficult.In addition, be now communicated with the second back pressure space 12 being in low-pressure state owing to drawing oily passage 15, the pressure in it is lower, greatly can be decreased through and draw oily passage 15 to the leakage of the sealing surface between orbiter 8 and fixed scroll 9, add sealability.First angle range compressor longitudinal sectional drawing can with reference to shown in Fig. 6.
As shown in Figure 4, the second angle range θ 2 be roughly in 45 degree with the interval of 270 degree.When orbiter 8 runs on the second angle range, orbiter draws oily feeder connection 16 and runs to the first back pressure space 11 (within radial direction being positioned at sealed member 10), and orbiter draws oily channel outlet 14 and is communicated with fixed scroll oil groove grooving 13a.Extreme pressure lubricant in first back pressure space 11 enters fixed scroll oil groove 13 via drawing oily passage 15, and fixed scroll oil groove 13 is in high pressure conditions.Due in the second angle range, gas separaion power and tilting moment reduce, and counterpressure is superfluous.Extreme pressure lubricant now in fixed scroll oil groove 13 produces the reaction thrust that one is pushed open orbiter 8, and originally superfluous counterpressure is weakened, so the pressing force between orbiter 8 and fixed scroll 9 keeps moderate.Meanwhile, because the lubricant oil in oil groove 13 can take each rubbing surface to along with the running of orbiter 8, can lubrication effect be improved and reduce the leakage loss of micro-gap.Second angle range compressor longitudinal sectional drawing can with reference to shown in Fig. 7.
As shown in Figure 5, when orbiter 8 runs on the method for three turning angles scope outside first and second angle range, gas separaion power and tilting moment will level off to maximum value.Orbiter draws oily feeder connection 16 and runs to and be in low-pressure state second back pressure space 12 (radial direction being positioned at beyond sealed member 10), and orbiter draws oily channel outlet 14 and is communicated with fixed scroll oil groove grooving 13a.When orbiter 8 has just entered method of three turning angles scope, fixed scroll oil groove 13 is still in high pressure conditions, so the high pressure oil in oil groove 13 just enters the second back pressure space 12 of low pressure by drawing oily passage 15, the oil pressure of oil groove 13 reduces rapidly, the formation speed of negative pressure in oil groove 13 when so both can accelerate to enter method of three turning angles scope, extreme pressure lubricant too much in oil groove 13 can be avoided again to be brought to air aspiration cavity, to cause refrigerant suction to cross thermal loss.
Second embodiment:
As shown in Figure 8, the oil groove 13 of arc is opened in the upper-end surface of the substrate 8a of orbiter 8, and offers one section of less additional channel and erose grooving 13a on the outer rim end face 9a of fixed scroll 9.In orbiter 8 operation process, one end of oil groove 13 is communicated with the grooving 13a on fixed scroll 9 all the time.Other structure of the present embodiment is identical with the first embodiment, and oil groove 13, grooving 13a are also identical with the first embodiment with the performance characteristic of drawing oily passage 15.Oil groove 13 is arranged on orbiter 8 by the present embodiment, and the lubricant oil centre of effort in oil groove 13 can move by compliant scroll dish 8 together, and orbiter 8 therefore can be made stressed more steady.
In sum, the scroll compressor that the utility model embodiment provides, in the process that orbiter 8 revolves round the sun, within the entrance 16 drawing oily passage 15 runs to sealed member 10, be communicated with the first back pressure space 11, or run to beyond sealed member 10 and be communicated with the second back pressure space 12; The outlet 14 of drawing oily passage 15 run to there is oil groove 13 angle range in time, be namely communicated with it, or run to there is no oil groove 13 scope in time, namely disconnect connection; Different mode of communicating is switched by above-mentioned cooperation of drawing oily passage 15 and oil groove 13, lubricant oil can be controlled, thus can tilting moment be reduced, and when gas separaion power is larger, reduce Separating force, and when gas separaion power is less, increase Separating force, thus make the running of orbiter 8 more steady, and in whole operating range, the impacting force between orbiter 8 and fixed scroll 9 is moderate.Compared with existing structure, the utility model can improve the sealability of scroll compressor, reduces frictional loss, orbiter 8 steadily, is reliably operated.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a scroll compressor, the pump assembly comprising closed shell (1) and be arranged on wherein, described pump assembly comprises orbiter (8), fixed scroll (9), sealed member (10) and upper bracket (19), by sealed member (10) isolation formation two spaces between the boss of the lower end surface of described orbiter (8) and described upper bracket (19) inner side, be respectively the first higher back pressure space (11) of pressure and lower the second back pressure space (12) of pressure;
It is characterized in that, offer the oil groove (13) of arc in the end that described orbiter (8) is relative with described fixed scroll (9);
Offer in described orbiter (8) and draw oily passage (15), the described entrance (16) drawing oily passage (15) is opened in the lower end surface of described orbiter (8), can be communicated with described first back pressure space (11) or described second back pressure space (12); Described outlet (14) of drawing oily passage (15) is opened in described orbiter (8) upper-end surface, can be communicated with described oil groove (13) intermittence.
2. scroll compressor according to claim 1, it is characterized in that, at the first angle range (θ 1), described entrance (16) running of drawing oily passage (15) to being communicated in described second back pressure space (12), described in draw oily passage (15) outlet (14) disconnect with described oil groove (13) and being communicated with;
At the second angle range (θ 2), described entrance (16) running of drawing oily passage (15) to being communicated in described first back pressure space (11), described in draw oily passage (15) outlet (14) be communicated with described oil groove (13);
Method of three turning angles scope (θ 3) outside first and second angle range, described entrance (16) running of drawing oily passage (15) to being communicated in described second back pressure space (12), described in draw oily passage (15) outlet (14) be communicated with described oil groove (13).
3. scroll compressor according to claim 2, it is characterized in that, run to gas separaion power with the center of described orbiter (8) (O2) and tilting moment all reaches the corner of maximum value for zero degree position, described first angle range (θ 1) is in-45 degree and the interval of 45 degree; Described second angle range (θ 2) be in 45 degree with the interval of 270 degree; Described method of three turning angles scope (θ 3) be in 270 degree with the interval of 315 degree.
4. the scroll compressor according to claim 1-3 any one, it is characterized in that, described oil groove (13) is opened in the outer rim end face (9a) of described fixed scroll (9), and described oil groove 13 comprises grooving (13a); Grooving (13a) intermittence of described outlet (14) and described oil groove (13) of drawing oily passage (15) is communicated with.
5. scroll compressor according to claim 4, is characterized in that, described oil groove (13) is the arc-shaped slot concentric with described fixed scroll (9).
6. the scroll compressor according to claim 1-3 any one, it is characterized in that, described oil groove (13) is opened in the upper-end surface of described orbiter (8), one section of additional channel and grooving (13a) is also offered at the outer rim end face (9a) of described fixed scroll (9), and in described orbiter (8) operation process, one end of described oil groove (13) is communicated with the grooving (13a) on described fixed scroll (9) all the time.
7. scroll compressor according to claim 6, is characterized in that, described oil groove (13) is the arc-shaped slot concentric with described orbiter (8); Described additional channel and grooving (13a) are the arc-shaped slot concentric with described fixed scroll (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420838560.XU CN204357703U (en) | 2014-12-22 | 2014-12-22 | A kind of scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420838560.XU CN204357703U (en) | 2014-12-22 | 2014-12-22 | A kind of scroll compressor |
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| CN204357703U true CN204357703U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420838560.XU Withdrawn - After Issue CN204357703U (en) | 2014-12-22 | 2014-12-22 | A kind of scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204357703U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782030A (en) * | 2014-12-22 | 2016-07-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor |
-
2014
- 2014-12-22 CN CN201420838560.XU patent/CN204357703U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782030A (en) * | 2014-12-22 | 2016-07-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor |
| CN105782030B (en) * | 2014-12-22 | 2018-04-20 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of screw compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150527 Effective date of abandoning: 20180420 |