CN101358596B - Fluid machinery - Google Patents

Abstract

The target of this invention is to provide a fluid machine, which realizes the performance improvement and processing cost reduction of an oil supply pump at the same time, and realizes the fluid machine with improved performance and reduced cost. The oil supply pump of the fluid machine comprises: an inner piston that rotates with a rotary radius E corresponding to a rotary center of a rotating shaft; an outer rotor that is freely supported by means of rotating with eccentric quantity corresponding to the rotary center of the rotating shaft, and is penetrably equipped with a pump groove of the inner piston embedded at a clearance; and a pump shell that surrounds the inner piston and outer rotor and is installed at an end part of the rotating shaft. In addition, the thrust of the rotating shaft is applied to the outer rotor or the inner piston from a rotating cover covering a pump chamber.

Description

Fluid machinery

Technical field

The present invention relates to give rotating power to working fluid; Improve the compressor of its pressure or the working fluid of high pressure is expanded; Take out the decompressor of rotating power or increase the fluid machineries such as gas fan of the flow velocity of working fluid, relate in particular to the fluid machinery that is fit to the bearing fuel feeding improves with the energy efficiency of oil feed pump and the reduction of processing cost together realizes.

Background technique

In this fluid machinery in the past, open disclosed scroll compressor in the flat 10-18980 communique as the spy, as oil feed pump, inscribed gear type trochoidal curve formula pump is widely used.

[patent documentation 1] spy opens flat 10-18980 communique

The oil feed pump of fluid machinery is born from store oil portion and is sucted oil, and it is supplied with to bearing, keeps the work of the greasy property of bearing.That is, oil feed pump is the constitutive requirements of the groundwork of supporting that fluid machinery is born.Therefore, in the past, the groundwork amount that the consumes electric power amount of oil feed pump is born with respect to fluid machinery was minimum, but necessary condition is to carry oil feed pump to fluid machinery.If the groundwork amount of fluid machinery increases, then the necessary fuel delivery of bearing increases, and therefore, has to increase the spray volume of oil feed pump.On the other hand, under common situation, therefore the energy efficiency of pump, seldom carries oil feed pump so far along with the ejection quantitative change of pump uprises greatly on the little fluid machinery of workload.

Yet; In recent years; Utilize oil feed pump the bearing reliability raising and follow the minimizing of various losses of suitableization of reduction or the fuel delivery of pivot friction to be attracted attention, performance is improved as one of target, popular carries oil feed pump to the little fluid machinery of workload.Therefore, the raising of the energy efficiency of oil feed pump (after, show as performance) becomes big problem.

In the fluid machinery in the past shown in the patent documentation 1,, adopted trochoidal curve formula pump as oil feed pump.This oil feed pump is a kind of of gear pump, and gear meshing is used as the sealing position, and therefore, the accuracy to shape of profile of tooth is left and right sides fuel feeding pump performance greatly.This pump does not use simple circle or straight line, and use more trochoidal curve, cycloid, involute or with its similarly complicated curve as profile of tooth, therefore,,, used the powdered metal mold forming and the powder metallurgic method of sintering in order to suppress cost more in the past.

But though this autofrettage is low-cost, there is the limit in accuracy to shape, uses the fuel feeding pump performance raising of this profile of tooth also to have the limit.As its countermeasure, consider to implement the situation of back processing such as grinding or the situation of just carrying out NC processing at first, but in these methods, processing cost increases considerably, cost reduces becomes problem once more.Like this, in trochoidal curve formula pump in the past, can not realize simultaneously that the fuel feeding pump performance improves and cost reduces, extremely be difficult to utilize the performance of the fluid machinery of oil feed pump lift-launch to improve with implemented with low cost.

Summary of the invention

The object of the present invention is to provide through in the oil feed pump of fluid machinery, adopting and the simple oil feed pump of gear type various structure component shape; Can realize high performance oil feed pump with low processing cost; Through it is carried, realize low processing cost and performance, the fluid machinery that reliability is all high.

As first scheme that is used to realize said purpose, a kind of fluid machinery possesses: the energy mechanism of giving and accepting, the variation that it is given pressure for working fluid or follows the mechanics energy of flow velocity; Axle, it is rotated giving and accepting of power to the said energy mechanism of giving and accepting; Bearing, the said axle of its axle supporting; Accommodate the give and accept shell of mechanism, said axle and said bearing of said energy; Said shell is provided with the store oil portion that supplies with oil to said bearing in the inner space, said axle is at one end offered oil supply hole from said oil to said bearing that supply with, is provided with the oil feed pump of the oil that sucks from said store oil portion to said oil supply hole ejection; Wherein, Said oil feed pump is provided with: inner carrier, and it rotates with turning radius E with respect to the rotary middle spindle of said axle; External rotor, its rotating center with respect to said axle is supported freely with offset E rotation, and penetrates the pump groove that is provided with the said inner carrier of Spielpassung; Pump case, it will separate said pump groove and two pump chambers forming are divided into the inner space of said shell with said inner carrier; The pump suction passage, it is connected suction pump chamber that volume in the said pump chamber enlarges and said store oil portion; Pump ejection stream, it is connected volume dwindles in the said pump chamber ejection pump chamber and said oil supply hole.

In addition, as said alternative plan, in said first scheme, said pump case comprises: pumping cylinder, and its peripheral support with said external rotor is to rotate freely; With opposed chassis, running shaft end and with the opposed cover in said chassis, it clips said external rotor via micro-gap two sides cover said pump chamber.

In addition; As said third party's case; In said first scheme; Said pump suction passage comprises, pump sucks the portion that is absorbed in, and connect the pump inlet hole that said pump sucks the portion that is absorbed in and said store oil portion, and said pump sucks the portion that is absorbed in and on said chassis inner surface, is arranged at the zone of including in of departing from said ejection pump chamber, and comprises the position of including the zone in of said suction pump chamber.

In addition; As said cubic case; Said second or third party's case in; Said pump ejection stream comprises: the pump ejection is absorbed in portion, reaches the pump ejection groove that the said pump ejection of connection is absorbed in portion and on said chassis inner surface, covers the escutcheon portion of said oil supply hole, and said pump sprays the portion of being absorbed in and is arranged at the zone of including in of on said chassis inner surface, departing from said suction pump chamber, and comprises the regional position of including in of said ejection pump chamber.

In addition, as said the 5th scheme, in said cubic case, the said pump ejection when said pump ejection groove is arranged on said chassis inner surface and comprises said ejection pump chamber ejection and finish is absorbed in portion's side separating part bit position.

In addition; As said the 6th scheme; In said the 5th scheme, said pump ejection groove is arranged at when the ejection of said ejection pump chamber finishes, and crosses ejection pump chamber side that the ejection of edge minister degree of the said pump ejection groove of said pump ejection groove finishes than sucking the big position of suction pump chamber side of finishing.

In addition; As said the 7th scheme; Said second or third party's case in; Said inner carrier and said axle be rotation integratedly, and said pump ejection stream forms, will be at the rotary pump ejection stream that is connected in said inner carrier towards the said oil supply hole of the outer circumferential face of the inner carrier of said ejection pump chamber and interior all side settings or the area of space that is communicated with it.

In addition, as said the case from all directions, in said the 7th scheme, the said pump ejection when said rotary pump ejection stream is arranged at and comprises said ejection pump chamber ejection and finish is absorbed in portion's side separating part bit position.

In addition; As said the 9th scheme; In the case of said all directions; Said rotary pump ejection stream is arranged at when the ejection of said ejection pump chamber finishes, and the inner carrier outer circumferential side opening portion of said rotary pump ejection stream is than sucking the more position of the ejection pump chamber side that finishes to ejection of multiaspect of the suction pump chamber that finishes.

In addition, as said the tenth scheme, in said the 9th scheme, said rotary pump ejection stream forms the rotary pump ejection groove of the side end face, said chassis that is arranged at said inner carrier.

In addition, as said the 11 scheme, in said alternative plan, be formed with the integration overlay film on the surface of the mutual relative movement of said pump case or said inner carrier or said external rotor.

In addition, as said the 12 scheme, in said first scheme, the said energy mechanism of giving and accepting is formed scroll compression body.

In addition, as said the 13 scheme, in said the 12 scheme, with the vortex body vortex of said scroll compression body begin the position away from sequential, make the spray volume of said oil feed pump become the rotatable phase of setting said oil feed pump the biglyyest.

In addition, as the said the tenth cubic case, in said alternative plan, said pump case comprises: said pumping cylinder; With opposed chassis, said running shaft end, each side that it is disposed at said external rotor covers said pump chamber; Rotating mask, itself and said chassis are opposed, rotate integratedly with said inner carrier or said external rotor or said running shaft.

In addition, as said the 15 scheme, in the said the tenth cubic case, said rotating mask and said inner carrier or said external rotor or said running shaft are integrated.

In addition, as said the 16 scheme, in said the 15 scheme, said rotating mask is to set the power of applying to the mode of the said inner carrier or the said external rotor application of force in relative rotation.

In addition; As said the 17 scheme; In said the 16 scheme, said shell forms suction pressure with the inner space, and; The said energy mechanism of giving and accepting forms scroll compression body, and this scroll compression body possesses: have wallboard and on this wallboard, erect the fixed scroll of the vortex body that is provided with; Has wallboard and the rotation scroll of the vortex body that setting is provided with on this wallboard; Mesh said two scroll and form, and through dwindling volume, the pressing chamber of compression working fluid; Be arranged at the back side of said rotation scroll, and become and be higher than suction pressure, and be lower than the back pressure chamber of the intermediate pressure of ejection pressure.

In addition; As said the tenth all directions case; In said the 17 scheme, said running shaft is provided with the oil feed pump back pressure and imports the road, and oil feed pump backside space that it makes between said oil feed pump and bearing supporter and the internal surface of said shell forms and said oil supply hole are communicated with.

In addition, as said the 29 case, in said the 16 scheme, be formed with overlay film at least one face that receives thrust of said rotating mask, said inner carrier and said external rotor.

In addition, as said the 20 scheme, in said the 17 scheme, be provided with the back pressure control mechanism, its pressure with said back pressure chamber is that back pressure is made as the extent value than the high constant of suction pressure.

In addition; As said the 21 scheme; In the said first or the said the tenth cubic case, said motor has cogging torque, with when the angle of rotation of the said inner carrier 30a of the rotation that is synchronized with said bent axle is consistent with the eccentric direction of said external rotor 30b; The roughly great mode of the cogging torque of said motor 7 disposes said motor 7 and said oil feed pump 30.

Can know according to the present invention, can reduce the processing cost of the oil feed pump that is equipped on fluid machinery, simultaneously, can increase substantially performance, therefore, can improve the performance of the fluid machinery that carries it.In addition, because the input of oil feed pump minimizing, therefore; Also can carry out carrying, realize raising based on the bearing reliability of the stable supplying of bearing fuel feeding to the oil feed pump of the fluid machinery of little workload, and; Realize suitableization of fuel delivery, can realize that thus the performance of fluid machinery improves.

Description of drawings

Fig. 1 is the longitudinal sectional drawing of the scroll compressor of first mode of execution of the present invention.

Fig. 2 is the enlarged elevation figure (the M portion of Fig. 1) of the oil feed pump of first mode of execution of the present invention.

Fig. 3 is the amplification transverse cross-sectional view (the K-K section of Fig. 2) of the oil feed pump of first mode of execution of the present invention.

Fig. 4 is the enlarged elevation figure (the L2-L2 section of Fig. 3) of the oil feed pump of first mode of execution of the present invention.

Fig. 5 is the chassis plan view of the oil feed pump of first mode of execution of the present invention.

Fig. 6 is the chassis amplification plan view (central authorities of Fig. 5) of the oil feed pump of first mode of execution of the present invention.

Fig. 7 is the parts open cube display of the oil feed pump of first mode of execution of the present invention.

Fig. 8 is the action specification figure of the oil feed pump of first mode of execution of the present invention.

Fig. 9 is the longitudinal sectional drawing of the inner carrier of second mode of execution of the present invention.

Figure 10 is the longitudinal sectional drawing of the external rotor of second mode of execution of the present invention.

Figure 11 is the enlarged elevation figure (the M portion of Fig. 1) of the oil feed pump of the 3rd mode of execution of the present invention.

Figure 12 is the amplification transverse cross-sectional view (the K-K section of Fig. 2, Figure 11) of the oil feed pump of the 4th mode of execution of the present invention.

Figure 13 is the enlarged elevation figure (the M portion of Fig. 1) of the oil feed pump of the 5th mode of execution of the present invention

Figure 14 is the stereogram that the rotation of the oil feed pump of the 6th mode of execution of the present invention limits inner carrier.

Figure 15 is the chassis plan view of the oil feed pump of the 6th mode of execution of the present invention.

Figure 16 is the action specification figure of the oil feed pump of the 6th mode of execution of the present invention.

Figure 17 is the longitudinal sectional drawing of the scroll compressor of the 7th mode of execution of the present invention.

Figure 18 is near the longitudinal profile enlarged view (the N2 portion of Figure 17) of back pressure chamber of the 7th mode of execution of the present invention.

Figure 19 is the longitudinal profile enlarged view (the M2 portion of Figure 17) of the oil feed pump of the 7th mode of execution of the present invention.

Figure 20 is the enlarged elevation figure of the oil feed pump meshing part of the 7th mode of execution of the present invention.

Figure 21 is the assembling stereogram of the oil feed pump of the 7th mode of execution of the present invention.

Figure 22 is the explanatory drawing of the push to power relevant with the oil feed pump meshing part of the 7th mode of execution of the present invention.

Figure 23 is the enlarged elevation figure of the meshing part after the integration of the 8th mode of execution of the present invention.

Figure 24 is the longitudinal profile enlarged view (the M2 portion of Figure 17) of the oil feed pump portion of the 9th mode of execution of the present invention.

Figure 25 is the horizontal section enlarged view of the oil feed pump portion of the tenth mode of execution of the present invention.

Figure 26 be the tenth mode of execution of the present invention oil feed pump portion inner carrier central position and cogging torque concern explanatory drawing (the C portion of Figure 26).

Among the figure: the 1-scroll compressor; The 2-fixed scroll member; The 3-rotary vortex rotary part; The 4-frame; 5-Euclidean ring; The 6-bent axle; The 6b-oil supply hole; 6f-oil feed pump axial region; 6f1-oil feed pump eccentric part; 6f '-complicated variant oil feed pump axial region; 6h-supplementary bearing oil supply; The 7-motor; The 22-bypass valve; 26-back pressure control valve; The 30-oil feed pump; The 30a-inner carrier; Integrate layer of difficulty in the 30a2-; Integrate layer easily in the 30a3-; 30aa-has the inner carrier on plane; The 30b-external rotor; 30b1-pump groove; 30b2-integrates layer of difficulty outward; The outer layer easily of integrating of 30b3-; The 30c-pump case; The 30c1-chassis; The 30c2-cover; The 30c3-pumping cylinder; 30d-pump ejection stream; The ejection of 30d1-pump is absorbed in portion; 30d2-pump ejection groove; 30d '-rotary pump ejection groove; 30s-pump suction passage; The 30s1-pump sucks the portion that is absorbed in; The 30x-rotating mask; The 100-pressing chamber; The 105-suction chamber; The 110-back pressure chamber; 120-sprays the chamber; 125-store oil portion; The 140-pump chamber; 140s-sucks pump chamber; 140d-sprays pump chamber; The 160-thrust bearing division; α-crankshaft rotating central shaft; β-eccentric part central shaft; γ-external rotor rotary middle spindle; δ s-pump sucks and is absorbed in portion side separation position; The ejection of δ d-pump is absorbed in portion's side and separates the position.

Embodiment

(first mode of execution)

Below, use Fig. 1～Fig. 8, first mode of execution of the present invention is described.This mode of execution is to give the compressor of pressure energy to working fluid in the fluid machinery, and the energy mechanism of giving and accepting forms compression mechanical part 10.Also have, this compression mechanical part 10 is the scroll compressors 1 that are made up of scroll element.Fig. 1 is a longitudinal sectional drawing; Fig. 2 is the longitudinal sectional drawing (the L1-L1 section of Fig. 1 M portion, Fig. 3) of oil feed pump, and Fig. 3 is the transverse cross-sectional view (the K-K section of Fig. 2) of oil feed pump, and Fig. 4 is the longitudinal sectional drawing different with Fig. 2 (the L2-L2 section of Fig. 3) of oil feed pump; Fig. 5 is the plan view on chassis; Fig. 6 is the central part enlarged view on chassis, and Fig. 7 is the parts open cube display of oil feed pump, and Fig. 8 is the action specification figure of oil feed pump.At first, use Fig. 1, the overall structure and the action of scroll compressor 1 are described, then, the structure and the action of oil feed pump 30 are described.

Possess as the main composition important document in the scroll compressor 1: the compression mechanical part 10 of compression working fluid; Give the bent axle 6 of rotating power to this compression mechanical part 10; The bearing 23,24,25 of this bent axle 6 of axle supporting; Motor 7 as the rotating power source of bent axle 6; Supply with the oil feed pump 30 of oil to bearing 23,24,25; Accommodate the shell 8 of compression mechanical part 10, bent axle 6, motor 7 and oil feed pump 30.Also have, this scroll compressor 1 is vertically to dispose bent axle 6, begins to dispose successively the vertical scroll compressor of compression mechanical part 10, motor 7 and oil feed pump 30 from the top.

The 2nd, fixed scroll member; Main structure portion is fixed scroll body 2a, fixing wallboard 2b and being positioned at around it; Will with the tooth top of vortex body roughly with the assembly department 2c of one side as attachment face, fixing wallboard 2b be provided with bypass valve 22 that pressure spring, valve plate and the spring compression spare of avoiding overcompression or liquid compression constitute and central near ejiction opening 2d.In addition, be made as the suction port 2e that sucks the object fluid at the fixing upper surface of wallboard 2b.The 3rd, rotary vortex rotary part, main structure portion is rotation vortex body 3a and rotation wallboard 3b, and rotary hub 3g gives prominence at the back side of rotation wallboard 3b, and the centre is provided with swivel bearing 23 therein, and rotation lip part 3h is set in its lower end.

The 4th, frame is provided with annular groove 4b in the bottom surface of central indentation, inserts ring seal 21 at this, and, in central lower main bearing 24 is set, insert bent axle 6 at this.Also have, the 6a of pin portion of the off-centre on bent axle 6 tops is inserted said swivel bearing 23, simultaneously, rotary vortex rotary part 3 is assemblied in frame 4.At this, in order to prevent the rotation of rotary vortex rotary part 3, with frame 4 between engage Euclidean ring 5.Secondly, so that the mode of rotation vortex body 3a and fixed scroll body 2a engagement covers fixed scroll 2 from top, the assembly department 2c screw thread of fixed scroll 2 is fixed in frame 4.

Thus, the space that between two vortex bodyes, forms roughly sealing is a plurality of pressing chambers 100 and the suction chamber 105 that communicates with said suction port 2c, and, form back pressure chamber 110 at the back side of rotary vortex rotary part 3.This back pressure chamber 110 is opposed through rotation lip part 3h and ring seal 21, aspect pressure, separates with said bent axle 6 regions.And then, form swivel bearing chamber 115 on pin portion 6a top.

As stated, form combination two scroll 2,3, Euclidean ring 5 and frames 4, and suck working fluid from suction port 2e, with it from the compression mechanical part 10 of ejiction opening 2d with the high pressure ejection, and the subassembly that constitutes to the bent axle 6 of there transmitting rotary power.Behind the bent axle 6 fixed configurations rotor 7a of this subassembly,, form the motor 7 of rotating power source at the cylinder shell 8a of fixed configurations stator 7b fixed configurations subassembly.In addition, in cylinder shell 8a fixed configurations supplementary bearing dunnage 50 also, because the group of subassembly is gone into, the underpart of bent axle 6 is outstanding to the below of supplementary bearing dunnage 50.The supplementary bearing 25 that constitutes by ball bearing 25a and the ball eyelid retractor 25b that keeps it in this outstanding bent axle 6 underparts assembling, with ball eyelid retractor 25b fixed configurations in supplementary bearing dunnage 50.Be formed on the oil feed pump 30 that the back specifies in the bottom of this supplementary bearing 25.

In addition, the fixed configurations spraying pipe 52 in the side of cylinder shell 8a.On the other hand, insert the suction pipe 53 that is pressed into suction port 2e, after the internal terminal of hermetic terminal 54 connects the electric wire from motor 7, it is welded in cylinder shell 8a at the upper casing 8b of welded seal terminal 54.Then, suction pipe 53 is pressed into suction port 2e, then, soldering is in upper casing 8b.Thus, the ejection chamber of the working fluid after the ejection compression is formed at the top of fixed scroll.

Also have, last, behind the oil of injection established amount, the bottom surface with drain pan 8c is welded in cylinder shell 8a together forms shell 8 with said cylinder shell 8a, upper casing 8b.Thus, accumulate oil, form store oil portion 125 in shell 8 bottoms.

Secondly, mainly use Fig. 1,, the action of scroll compressor 1 is described according to flowing of working fluid and flowing of oil.At first, be that the center describes with flowing of working fluid.Working fluid through suction port 2e, gets into compression mechanical part 10 from suction pipe 53.The working fluid that gets into wherein at first gets in the suction chamber 105.At this, the rotation of the bent axle 6 through utilizing motor 7, rotary vortex rotary part 3 rotatablely moves, and between two vortex body 2a, 3a, forms pressing chamber 100.

Thus, the working fluid in the suction chamber 105 is enclosed in the pressing chamber 100, and then, volume-diminished simultaneously, moves to center side.Like this, the working fluid that boosts to the ejection pressure sprays to ejection chamber 120 from compression mechanical part 10 through ejiction opening 2d or bypass valve 22.Also have, be separated in the oil (afterwards stating) that contains the there in the inside of shell 8 after, through spraying pipe 52, flow out to the outside of scroll compressor 1.

Secondly, be that the center describes with flowing of oil.The oil feed pump 30 that the rotation of the oil utilization of in store oil portion 125, storing through bent axle 6 drives through the vertical hole of the fuel feeding that connects bent axle 6 vertically (oil supply hole) 6b, splits into three little paths of flow path resistance, is supplied in each bearing.The first fuel feeding road is the supplementary bearing fuel feeding road via supplementary bearing fuel feeding transverse holes 6g.The second fuel feeding road is through the axle supporting fuel feeding road of main bearing groove 6d to main bearing 24 fuel feeding from main bearing fuel feeding transverse holes 6c.The 3rd fuel feeding road is 115 through swivel bearing groove 6e, to the swivel bearing fuel feeding road of swivel bearing 23 fuel feeding from the swivel bearing chamber.Wherein, the part of the oil of supplying with via second, third fuel feeding road direction bearing is through being arranged at rotation lip part 3h, and the oil groove 3i of rotation is supplied in back pressure chamber 110 off and on across ring seal 21.On the other hand, the oil beyond the back pressure chamber fuel feeding returns store oil portion 125 through oil extraction road 155.

Yet the oil that is supplied in back pressure chamber carries out the lubricated of mobile Euclidean ring 5 that in back pressure chamber 110, slide.Pass through when this oil and then lubricated rotary vortex rotary part 3 and fixed scroll 2 compress thrust bearing division 160 each other, be supplied in suction chamber 105 or pressing chamber 100.In addition, be parallel to this thrust bearing division 160, the back pressure control valve 26 that oil is flow through to suction chamber 105 or pressing chamber 100 from back pressure chamber 110 is set.The oil that flows into to suction chamber 105 or pressing chamber 100 and compressed working fluid together improve the sealing of pressing chamber, when improving compression performance, are transplanted on ejiction opening 2d, spray to ejection chamber 120.

Then, as stated, in shell 8, separate, return store oil portion 125 with working fluid.Yet the oil that flows into to back pressure chamber 110 is depressurized, and therefore, occurs in the gasification of the working fluid of there dissolving, the pressure of back pressure chamber (after, be called back pressure) rise.But the pressure reduction that is provided with the gateway surpasses specified value and then opens the back pressure control valve 26 of control, and therefore, back pressure is controlled as the pressure than the high said specified value degree of pressure of the pressure (suction pressure) of the suction chamber 105 of outlet side or pressing chamber 100.

This back pressure control valve 26 is made up of compressed valve spring, valve plate, valve gap, said known decrement corresponding to valve spring.Through the decrement of this valve spring of suitableization, can the necessary minimal attraction force of the pulling-off force that rotary vortex rotary part 3 is drawn back from fixed scroll 2 that overcomes that working fluids in the pressing chamber 100 cause be given to rotary vortex rotary part 3.Especially, under situation about using, together use, under the operating condition of extremely wide scope, realize best back pressure set, play the effect that improves compression performance with said bypass valve 22 as air-conditioning circuit compressor.As stated, the supply of the original effect supplied with to each bearing portion of the bent axle 6 of supplementary bearing 25, main bearing 24, swivel bearing 23 of the oil feed pump 30 performance oil that will be positioned at store oil portion 125 and axial thrust bearing portion 160, to the supply of the back pressure chamber 110 that is used to produce back pressure, be used to improve the effect to pressing chamber 100 of the sealing of pressing chamber.

Secondly, use Fig. 2～Fig. 8, explain the oil feed pump 30 of the effect in the aforesaid compressor of performance structure, and move and describe.This oil feed pump mainly comprises: follow the power of supplying with oil feed pump bent axle 6 rotation and the inner carrier 30a that rotatablely moves and will be with respect to the freely external rotor 30b of rotation of the eccentric axle of bent axle 6 as running shaft; Inner carrier 30a is embedded at this external rotor penetrates the pump groove 30b1 of setting and the pump groove separation space that forms is used as pump chamber 140; Also have, the pump case 30c that pump chamber 140 is divided into the inner space of shell 8 is set.Through such structure; The action of realization pump; But this action be used non-skidly on the circumference of the rolling circle that rolls in the inside of justifying (be called and decide circle) a bit only at the deciding under the consistent situation of radius of a circle of rolling diameter of a circle, come and go mobile geometric theorem decide diameter of a circle.

At first, use Fig. 2,3,4,7, description architecture.Oil feed pump axial region 6f is set in the lower end of bent axle 6, the eccentric oil feed pump eccentric part 6f1 (central shaft of eccentric part is made as β, will be made as E from the offset of α) from crankshaft rotating central shaft α is set at its front end.Through embedding the mode in gap, the inner carrier 30a of cylinder shape is set at this oil feed pump eccentric part 6f1.Thus, to carry out with crankshaft rotating central shaft α be the rotatablely moving of turning radius E at center to inner carrier 30a.On the other hand, will be rotation freely the external rotor 30b of the axle of E degree from the eccentric amount identical of crankshaft rotating central shaft α with the turning radius of inner carrier 30a as rotary middle spindle γ.

Penetrate the pump groove 30b1 that long hole shape is set at this external rotor 30b, there, inner carrier 30a embeds in the gap.Thus, pump groove 30b1 is separated into two spaces, and space separately forms pump chamber 140.This pump chamber 140 utilizes pump case 30c to be divided into the inner space of shell 8.This pump case 30c comprises: be arranged at the chassis 30c1, cover 30c2 of lower surface and the upper surface side of external rotor 30b and the pumping cylinder 30c3 that supports external rotor as these linking department and rotation respectively.At this, in the pump case 30c of this mode of execution, can know from Fig. 2, Fig. 4, form as one and changed the top pump case parts 30c23 of cover 30c2 and pumping cylinder 30c3.Thus, have the minimizing component number, improve the effect of assembling performance.

In addition, pump case parts 30c23 is provided with the necessary minimal hole through oil feed pump eccentric part 6f1 on top.Therefore; Assemble as shown in Figure 7; After in the hole of top pump case parts 30c23, passing through oil feed pump eccentric part 6f1, insert the order of inner carrier 30a to eccentric part and carry out then, after group is gone into external rotor; Utilize pumping cylinder set screw 30k, pump case parts 30c23 is fixed in supplementary bearing dunnage 50 with top.At this moment, turning crankshaft 6 simultaneously, carries out screw threads for fastening.Thus, can improve the positional accuracy of pumping cylinder 30c3, therefore, improve the positional accuracy of external rotor rotary middle spindle γ, can make the action of oil feed pump 30 smooth and easy, have the effect that improves the fuel feeding pump performance.

At last, with chassis set screw 30m chassis 30c1 is fixed in top pump case parts 30c23.Like Fig. 5, shown in Figure 6,30c1 is provided with pump suction passage 30s and pump ejection stream 30d on the chassis, therefore, needs precision to guarantee the relative position with top pump case parts 30c23 well.Therefore, when assembling, insert locating stud, improve both relative positional accuracies to the positioning hole 30i that is arranged at both, 30i2.Thus, the desired location coupling of the rotatable phase of pump chamber 140 and pump suction passage 30s, pump ejection stream 30d can make the mobile smooth and easy of oil in suction process, the ejection process, therefore, has the effect of the performance that can improve oil feed pump 30.

As stated, form oil feed pump 30, but can know that wherein in order to form pump chamber, the inner carrier 30a of demanding accuracy to shape and external rotor 30b are plane or the so-called extremely simple shape of barrel surface.Thus, can high-precision cutting with implemented with low cost.In addition, in the powder compacting of following sintering in the past, also can improve the mould precision, therefore, and then improve accuracy to shape.In addition, the thermal distortion during sintering is also simple, can suitably carry out the correction of the mould shape of having considered this thermal distortion, therefore, can further improve accuracy to shape.Its result through the oil feed pump of this form, can reduce the cost of oil feed pump, simultaneously; Can improve the fuel feeding pump performance, therefore, function improves the bearing reliability of the scroll compressor 1 that carries it; And reduce the pump input, therefore, also have the effect that improves energy efficiency.

Secondly, use Fig. 3, Fig. 6, Fig. 8, explain oil feed pump 30 pump chamber action with spray stream 30d with its pump suction passage 30s and pump that connects airtight relevant and definite desired location.At first, through Fig. 3 pump chamber is described.Pump chamber 140 through with inner carrier 30a Spielpassung in pump groove 30b1, separate pump groove 30b1 and form two simultaneously.Fig. 3 is the end that inner carrier 30a comes pump groove 30b1, and one volume of the pump chamber 140 of formation becomes 0 situation.

The separation position that form this moment is two positions (δ s and δ d), all forms the periphery barrel surface of inner carrier 30a and the opposed state of planar surface portion of pump groove 30b1.This becomes the sealing position of pump chamber 140, but the sealing position of opposed trochoidal curve formula gear pump is in a ratio of the high mode of sealability between this and the convex surface.Thus, can realize the oil feed pump that suppresses to reveal, have the effect of the performance that can improve oil feed pump 30.

Secondly, through Fig. 8, the pump action of the pump chamber 140 that is formed as described above is described.Among Fig. 8 with the section identical with Fig. 3 show pump chamber 140 advance a stroke during pump action.During this period, 6 two weeks of rotation of bent axle (to justifying the shape arrow) towards rotation.Profile change when Fig. 8 shows 22.5 ℃ of each rotations of bent axle 6 has been omitted the hacures of the section of representing each structure important document.As stated, pump chamber 140 forms two simultaneously.These two pump chambers 140 phase place that staggers each other, therefore, a side pump chamber is under the situation of induction stroke, the opposing party's pump chamber is an ejection stroke, but its action is identical.Therefore, be conceived to a pump chamber (pump chamber of the cross-hauling of Fig. 8), the pump action is described.

At this, be at pump chamber under the situation of induction stroke and be called suction pump chamber 140s, be called jet pump chamber 140d under the situation of ejection stroke being in.Yet, also be when sucking beginning, therefore, on the address of pump chamber, to obscure when pump chamber ejection finishes, but at this, become ejection stroke till will spray end, be defined as and spray pump chamber 140d.Equally, suck the pump chamber that finishes and be called suction pump chamber 140s.(2) to (9) of Fig. 8 (having round numeral by the numeral that have bracket among the figure) are induction stroke, are ejection stroke till arriving (1) from (10) through (16).In addition, the pump suction passage 30s that on the 30c1 internal surface of chassis, is provided with, both scripts of pump ejection stream 30d all should be hidden line, but this need carry out detailed explanation, therefore, representes with thin solid line.In addition; As stated, separate the position and produce two places, but wherein; To be shown pump near the separating part bit table that pump sucks a side that is absorbed in portion's side and suck and be absorbed in portion's side and separate position δ s, will be shown the pump ejection near the separating part bit table that the pump ejection is absorbed in a side of portion's side and be absorbed in portion's side and separate position δ d.

Pump sucks and is absorbed in the 30s1 of portion is crescent-shaped as shown in Figure 8.This is to be arranged to comprise the zone of including in that sucks pump chamber 140s, departs from the result's who includes regional position in of ejection pump chamber 140d shape.At this, at central part little depressed part is set, but this is to be used to avoid near the required shape of ejection pump chamber 140d of δ s that induction stroke has just begun back (situation of Fig. 8 (2)).Suck at the pump of such shape and to be absorbed in the 30s1 of portion and to offer pump inlet hole 30s2, pump suction passage 30s is set.

In addition, pump ejection is absorbed in the 30d1 of portion and also is crescent-shaped as shown in Figure 8.This is to be arranged at the zone of including in that comprises ejection pump chamber 140d, departs from the result's at the position of including the zone in that sucks pump chamber 140s shape.Suck the identical ground of the portion that is absorbed in pump, be provided with little depressed part, but this is to be used to avoid near the required shape of suction pump chamber 140s of δ s that induction stroke finishes to face preceding (situation of Fig. 8 (8)) at central part.Also have,, pump ejection groove 30d2 is set on the 30c1 internal surface of chassis for the oil supply hole 6b that the oil that the inflow pump ejection is absorbed in the 30d1 of portion imports at bent axle 6 lower ending openings.Pump sprays groove 30d2 and causes being created in the interior oil from ejection side direction suction side process shortcut of pump being communicated with of suction pump chamber 140s, therefore, has to do one's utmost to avoid.

But; The pump chamber of oil feed pump 30 is included the wide zone (owing to inner carrier 30a back and forth movement in pump groove 30b1 forms) on the 30c1 internal surface of chassis in, can not be disposed on the chassis inner surface near the pump ejection groove that the 30j of escutcheon portion of central authorities and the pump ejection that relies on periphery are absorbed in the 30d1 of portion linking it strictly speaking.Therefore, also consider the ejection stream that 30c1 set inside U returns on the chassis, but this problem that causes fabricating cost to uprise.Therefore, in this mode of execution, like Fig. 8 (1) or shown in Figure 3, the pump ejection when comprising that ejection pump chamber 140d ejection finishes is absorbed in portion's side and separates position δ d pump ejection groove 30d2 is set.In this case; Between summary (16)-(1)-summary (2) of Fig. 8, pump ejection groove 30d2 is communicated with suction pump chamber 140s, but the suction velocity of the suction pump chamber 140s that sucks the beginning vicinity little (the volume increment rate that sucks pump chamber is little); Therefore, few through the shortcut amount.Thereby, in fact, be regarded as pump ejection groove 30d2 and do not get final product with the connection that sucks pump chamber 140s, have the minimizing that can realize processing cost, and can realize the effect of the raising of pump performance.

In addition; And then the desired location that is described in detail the pump ejection groove 30d2 of this mode of execution is provided with as follows; That is: when the ejection of ejection pump chamber 140d finishes, cross ejection pump chamber 140d side that the ejection of edge minister degree of the pump groove 30b1 of pump ejection groove 30d2 finishes than sucking the big position of suction pump chamber 140s side of finishing.In this case, the connection of pump ejection groove 30d2 and suction pump chamber 140s is that Fig. 8 (1) occupies major part (general trend of events) to the connection between the summary (2).(1) at Fig. 8 can be known under the situation of the connection between the summary (2), in access, contains superfine suction pump chamber 140s, and therefore, it is very big that flow path resistance becomes.Thereby,, have the effect that improves pump performance from further being suppressed of pump ejection side direction suction side through the shortcut amount.Especially, this mode of execution wherein also is that the pump chamber edge portion of crossing with the suction pump chamber 140s side that suck to finish becomes 0 situation, becomes the method that can expect the raising of pump performance.

Yet; Because the influence of the actual processing or the tolerance of assembling; How many pumps also departs from from above-mentioned position when spraying being set with of groove 30d2, but under the sort of situation, has the pump performance that causes from the minimizing through the shortcut amount of pump ejection side towards the suction side and improve effect.

In addition, the change in volume of the pump chamber 140 of this oil feed pump 30 describes to be synchronized with the sinusoidal curve of the period of rotation of bent axle 6.Therefore, generating period property change when the rotation each time of the fuel delivery of bearing at bent axle 6.Under the situation of scroll compressor, the situation that the bearing load that the common sequential that begins with the vortex away from vortex body 2a, 3a puts on bent axle 6 becomes maximum is in the majority.Therefore, with this sequential the spray volume of oil feed pump 30 rotatable phase that makes up oil feed pump 30 that becomes also can the biglyyest.Thus, can realize the minimizing of bearing fuel delivery at fuel delivery centralized oil supply in case of necessity.Thus, can reduce the capacity of oil feed pump 30, therefore, can reduce the input of compressor, have the effect that can improve energy efficiency.

In addition, owing to can reduce the bearing fuel delivery, therefore can reduce the oily enclosed volume of compressor.Thus, can reduce the pasta of reservoir compartment, therefore, also have the effect that can reduce the ejection oil mass.And then, under with the airtight situation that has recycled this compressor of using combustible refrigerant, can reduce the inclosure oil mass, therefore, can reduce the combustible refrigerant that dissolves in oil, the amount of the whole combustible refrigerant that can suppress to circulate.Thereby, play the effect that improves the circuit Security.From oil feed pump 30 under the long situation of the stream of bearing, consider that pressure propagates the required time in oil, the ejection peak of oil feed pump 30 is made as than desire the bearing fuel feeding to be pressed maximized sequential also be vital soon.

In addition; Scheme as oil feed pump; Often consider to have used the oil feed pump of Euclidean mechanism, rotary plunger mechanism or blade rotating machinery, but the constitutive requirements of back and forth movement are arranged in these mechanisms, can not carry out balance completely; To the situation of the reason that becomes noise or vibration, the constitutive requirements of the motion of this oil feed pump 30 all are rotated motion.Its result can obtain spin balancing fully, can avoid becoming the situation of noise or vibration, plays the effect that can realize noise or vibrate low fluid machinery.

(second mode of execution)

Secondly, use, second mode of execution of the present invention is described as Fig. 9 of the longitudinal sectional drawing of inner carrier 30a with as Figure 10 of the longitudinal sectional drawing of external rotor 30b.Except forming the inner carrier 30a of important document at the pump chamber of oil feed pump 30 and the surface of external rotor 30b is provided with the conformable layer, identical with first mode of execution, therefore, only conformable layer is carried out association explanation, the explanation of omitting other.This conformable layer comprises: the interior integration of the easy integration of surface side (な じ body) easily layer 30a3,30b3 and its inboard be difficult to integrate but integration layer of difficulty 30a2, the 30b2 that can carry out integration to a certain degree.

Through using such inner carrier and external rotor,, can reduce to separate the gap at position even, can assemble thus under the situation about originally can not organize, assembling when also integrating owing to tolerance.Thus, even enlarge the figure tolerance of inner carrier 30a or external rotor 30b, the gap in the time of also can guaranteeing these combinations is little.Thus, can reduce processing cost, simultaneously, can improve the fuel feeding pump performance, have when can realize suppressing manufacture cost the effect of the compressor that performance is high.

This mode of execution is that the mother metal surface is corroded in the integration processing agent; In the time of mother metal that begins from here to ooze out and integration processing agent reaction, separate out the integration that forms on the surface situation of the integration layer of difficulty that forms with integration processing agent reaction of layer and the part that corrodes easily.For example, as ferrous material, situation that forms the manganese phosphate overlay film above that etc. is equivalent to this with mother metal.In this case, original mother metal surface becomes and integrates layer and the border of integrating layer of difficulty easily.In this case, also can be or cover the tolerance of the danger that the size of these pump case 30c set to take place disturbs to inner carrier 30a and external rotor 30b.

If make up these, then the interference portion between the mother metal avoids interference owing to integrating the layer of difficulty integration, but is difficult to integrate, and therefore, in the moment that avoids interference, the slip locomotivity is die-offed, and does not integrate later at jam avoidance.Therefore, the gap between important document remains minimum, suppresses to reveal, and can realize the high-performance of oil feed pump.On the contrary, integrate easy layer in the clearance portion between the mother metal by landfill, therefore, compare with the situation that does not have conformable layer, gap smaller suppresses to reveal, and can realize the high-performance of oil feed pump.Know from above,, cut down finished cost, play the effect that can realize high performance compressor even the tolerance of each important document of not strict setting oil feed pump also can realize high performance oil feed pump.

(the 3rd mode of execution)

Secondly, use is explained the 3rd mode of execution of the present invention as Figure 11 of the longitudinal sectional drawing (the M portion of Fig. 1) of oil feed pump 30.The oil feed pump axial region becomes complicated variant oil feed pump axial region 6f ' and complicated variant oil feed pump eccentric part 6f ' 1 as complicated variantization, is associated with this; The internal diameter of cover 30c2 dwindles, and is in addition, identical with said first or second mode of execution; Therefore, oil feed pump axial region 6f, cover 30c2 only are described, omit other explanations.In oil feed pump 30, will cover 30c2 and be connected to bent axle 6 lower ends, therefore, with complicated variant oil feed pump axial region 6f fixed configurations in bent axle 6.Usually be pressed in this method, but under the sort of situation, the axial region of supplementary bearing enlarges, and therefore, preestablishes the bearing play of having considered this expansion.As additive method, consider energising and molten method of applying or bonding.

In this case, do not cause the expansion of the axial region that takes place when being pressed into, therefore, the easy effect that becomes is managed in the gap with supplementary bearing portion.Under the situation of this method, need not pass through the oil feed pump eccentric part through the hole of oil feed pump axial region of cover 30c2, therefore, can reduce.Its result can enlarge inner carrier 30a upper-end surface and the opposed position of covering 30c2.Therefore the sealing position that this opposed position is a pump chamber 140, suppresses to reveal, and has the effect of the performance that improves oil feed pump 30.

(the 4th mode of execution)

Secondly, use Figure 12, the 4th mode of execution of the present invention is described as the transverse cross-sectional view (the K-K section of Fig. 2) of oil feed pump 30.The outer circumferential face that forms at inner carrier is provided with planar surface portion 30aas, 30aad; With here as the inner carrier 30aa that has the plane at the separation position of pump groove 30b1; In addition, identical with said first～the 3rd mode of execution, therefore; Only the inner carrier 30aa that has the plane is described, omit other explanations.Thus, improve the sealing at the separation position of pump chamber 140, suppress to reveal, have the effect of the performance that improves oil feed pump 30.

In addition; In this mode of execution; The width that pump is sprayed groove 30d2 is made as below the width of planar surface portion 30aas, 30aad of inner carrier, and the pump ejection the when desired location that pump is sprayed groove 30d2 is arranged at and is included in ejection pump chamber 140d ejection and finishes is absorbed in portion's side separating part bit position.Its result, avoid via pump ejection groove 30d2 from the suction side towards the leakage of ejection side, further reduce and reveal, have the effect that realizes that the fuel feeding pump performance improves.Certainly; Even the width of pump ejection groove 30d2 is greater than the planar surface portion 30aas of inner carrier, the width of 30aad; Compare with the situation of not setting the periphery planar surface portion,, have the effect that improves the fuel feeding pump performance via reducing of pump ejection groove 30d2 from the suction side towards the leakage of ejection side.In addition, confirm to separate the position, therefore, can limit the fine finishing zone, have the effect of the minimizing that can realize processing cost in the planar surface portion of inner carrier.

In addition, shown in two dot and dash line, the outer circumferential face of cutting cylindraceous inner carrier and form planar surface portion 30aas, 30aad also can.In this case because the departing from of the shape of pump groove 30b1, from ejection pump chamber 140d to sucking pump chamber 140s when shifting; The volume of pump chamber does not become roughly 0, but this time with the oil of liquid as working fluid, therefore; Expansion-loss does not become problem again, and performance reduces generation hardly.On the other hand, inner carrier 30a can carry out periphery with the opposed position of 180 degree and cut and process after cylinder processing, and therefore, it is extremely easy to make, and has the effect that reduces manufacture cost.

(the 5th mode of execution)

Secondly, use Figure 13, the 5th mode of execution of the present invention is described as the longitudinal sectional drawing (Fig. 1 M portion) of oil feed pump 30.Be provided with integrated oil feed pump eccentric part and inner carrier; Make it with respect to the mode that bent axle 6 rotates integratedly, sought the rotation restriction inner carrier 30a ' of the anti-locking mechanism of rotations such as D cutting surface and kept its coaxial oil feed pump axial region 6f ", in addition; identical; therefore with said the 3rd mode of execution, only explanation rotation restriction inner carrier 30a ' and coaxial oil feed pump axial region 6f ", omit other explanations.The high eccentric shaft of processing cost disappears, and therefore, has and can realize the compressor that reduces cost.

(the 6th mode of execution)

Secondly, use Figure 14 as the stereogram of rotation restriction inner carrier 30a ', as Figure 15 of the internal surface plan view of chassis 30c1, and, the 6th mode of execution of the present invention is described as 16 of the explanatory drawing of pump action.The internal surface of 30c1 is eliminated pump ejection stream (with reference to Figure 15) from the chassis, forms the rotary pump ejection groove 30d ' (with reference to Figure 14) as the groove of rotation restriction inner carrier 30a ', in addition; Identical with the 5th mode of execution; Therefore, only pump ejection stream is described, omit other explanations.At this, the variation of the K-K section of the pump action specification figure presentation graphs 13 of Figure 16, its manifestation is identical with Fig. 8, therefore, economizes the explanation of the structure of sketch map, the explanation of pump chamber.

Rotary pump ejection groove 30d ' is the periphery of connection inner carrier shown in figure 14 and the groove of the chassis side in interior week, and this (1) from Fig. 8 can know, is set in pump when comprising ejection pump chamber 140d ejection and finishing and sucks and be absorbed in the position that portion's side is separated position δ s.In this case; During summary (16)-(1)-summary (2) of Figure 16; Rotary pump ejection groove 30d ' is communicated with suction pump chamber 140s; But the suction velocity of being somebody's turn to do the suction pump chamber 140s that sucks the beginning vicinity little (the volume increment rate that sucks pump chamber is little) is therefore, minimum towards the process shortcut amount of suction side from the ejection side.Thereby, in fact, be regarded as rotary pump ejection groove 30d ' and suck pump chamber 140s not being communicated with, have the effect that can cut down finished cost and can realize the raising of pump performance.

Yet; The opening portion of the suction pump chamber 140s side of the rotary pump ejection groove 30d ' when the suction that sucks pump chamber 140s finishes is because pump groove 30b1 and inner carrier 30a interval significantly; Therefore, flow path resistance is little, from pump ejection side increasing significantly through the shortcut amount towards the suction side.The rotary pump of this mode of execution sprays groove 30d ' when the suction of suction pump chamber 140s finishes, and the inner carrier outer circumferential side opening portion of rotary pump ejection groove 30d ' is arranged at than the suction pump chamber 140s that sucks end more towards the position that sprays pump chamber 140d side.Therefore, further suppressed, had the effect that improves pump performance from the process shortcut amount of pump ejection side towards the suction side.

Especially, this mode of execution wherein is the situation of the inner carrier outer circumferential side opening portion complete face of rotary pump ejection groove 30d ' to the suction pump chamber 140s that sucks end, forms the mode that can expect pump performance.Replace this rotary pump ejection groove 30d ', form the hole that is provided with at the inner carrier circumferential surface, also can bring into play the effect of rotary pump ejection stream.In this case, can guarantee the intensity of inner carrier, therefore, the difference of interior periphery is little, and thin thickness is effective under the situation of the inner carrier that intensity is low.

(the 7th mode of execution)

Use Figure 17～Figure 21, the scroll compressor 501 of the 7th mode of execution of the present invention is described.This mode of execution is with the scroll compressor of the pressure in the shell as the so-called low-pressure chamber type of suction pressure, become in the chamber low pressure structure and with its function associated or action with the pressure in the shell is that as the scroll compressor of high-pressure chamber's type of ejection pressure first mode of execution differs widely.On the other hand, the action of oil feed pump is except this axial gap management, and is identical with first mode of execution.Therefore, at first, use Figure 17, Figure 18, specifies the structure relevant or with function or move relevant aspect, secondly, use Figure 19～Figure 23 explains that the axial clearance of oil feed pump is managed, and roughly omits other aspects with low-pressure chamber.

At first, near the amplification profile (the N2 portion of Figure 17) the longitudinal sectional drawing of the scroll compressor of use Figure 17 and the back pressure chamber of Figure 18 specifies structure or function or the action relevant with low-pressure chamber.As the main composition important document, possess in the scroll compressor 501: the compression mechanical part 10 of compression working fluid; Axle with the crank that drives this compression mechanical part 10 is a bent axle 6; The bearing 23,24,25 of this bent axle 6 of axle supporting; Become the motor 7 of the rotary driving source of bent axle 6; Oil feed pump 30 with oil type bearing 23,24,25 fuel feeding; Accommodated the shell 8 of compression mechanical part 10, bent axle 6, motor 7 and oil feed pump 30.This scroll compressor 501 is vertically to dispose bent axle 6, disposes the vertical scroll compressor of compression mechanical part 10, motor 7 and oil feed pump 30 successively from the top.

Shell 8 is connected in shell 8 with suction pipe 53, and the inner space is made as suction pressure, and, be provided with the store oil portion 125 of store oil in this inner space.Shell 8 comprises: upper casing 8b, cylinder shell 8a and drain pan 8c.Compression mechanical part 10 possesses: have fixedly wallboard 2b and the fixed scroll 2 of erectting the fixed scroll body 2a that is arranged at it; Have rotation wallboard 3b and the rotary vortex rotary part 3 of erectting the rotation vortex body 3a that is arranged at it; Engages fixed scroll 2,3 and forming is through dwindling volume, the pressing chamber 100 of compression working fluid; Be arranged at the back side of rotary vortex rotary part 3, form the back pressure chamber 110 that is higher than suction pressure and is lower than the intermediate pressure space of ejection pressure.

The main structure portion of fixed scroll 2 is fixed scroll body 2a, fixing wallboard 2b and being positioned at around it, and will with the assembly department 2c of the roughly same face of the tooth top of fixed scroll body 2a as attachment face.Be provided with bypass valve 22 that pressure spring, valve plate and the spring compression spare of avoiding overcompression or liquid compression constitute and near the ejiction opening 2d the central authorities at fixing wallboard 2b.In addition, be provided with the suction port 2e that sucks working fluid in the side of assembly department 2c.

Rotary vortex rotary part 3 is made up of rotation vortex body 3a and rotation wallboard 3b, is provided with swivel bearing 23 in the back side central authorities of rotating wallboard 3b.Central authorities at frame 4 are provided with main bearing 24, in this main bearing 24, insert bent axle 6.Also have, the 6a of pin portion of the off-centre on bent axle 6 tops inserts in the swivel bearing 23, and rotary vortex rotary part 3 is assemblied in frame 4.At this, in order to prevent the rotation of rotary vortex rotary part 3, with frame 4 between engage Euclidean ring 5.

Secondly, so that the mode of rotation vortex body 3a and fixed scroll body 2a engagement, from the top covering fixed scroll 2 of rotary vortex rotary part 3, the assembly department 2c screw thread of fixed scroll 2 is fixed in frame 4.Thus, the space that between two vortex body 3a, 2a, forms roughly sealing is a plurality of pressing chambers 100 and the suction chamber 105 that communicates with said suction port 2e, and, form back pressure chamber 110 at the back side of rotary vortex rotary part 3.And then, in the upper surface formation swivel bearing chamber 115 of the 6a of pin portion.Also have, at the bent axle 6 fixed rotor 7a that give prominence to downwards from frame 4.

The rotor 7a of the subassembly that is formed as described above is inserted in the stator 7b of cylinder shell 8a fixed configurations, and the fixed scroll 2 of subassembly is fixed in cylinder shell 8a.Form motor 7 thus.

In addition, fixed joint bearings plate 50 in the bottom of cylinder shell 8a, because the group of subassembly is gone into, give prominence to below supplementary bearing dunnage 50 underpart of bent axle 6.At the supplementary bearing 25 that the underpart of this outstanding bent axle 6 assembling ball bearing 25a and the ball eyelid retractor 25b that keeps it constitute, 25b is fixed in supplementary bearing dunnage 50 with the ball eyelid retractor.In the bottom of this supplementary bearing 25, oil feed pump 30 and supplementary bearing 25 are integrated and form.And then, with the fixing suction pipe 53 of the suction port 2e opposed position of cylinder shell 8a side.

Secondly, will have the top that fixed cover 51 screw threads that rely on the outstanding spraying pipe 52 of central authorities are fixed in fixed scroll 2, form ejection chamber 120.Also have, after the internal terminal of the hermetic terminal 54 that upper casing 8b welds connects the electric wire from motor 7, upper casing 8b is welded in cylinder shell 8a.And then, with spraying pipe 52 solderings in upper casing 8b.Also have, welding configuration drain pan 8c utilizes upper casing 8b, cylinder shell 8a and drain pan 8c to form shell 8 in the bottom surface of cylinder shell 8a.Thus, the bottom of shell 8 forms the store oil portion 125 of store oil.

Secondly, according to flowing of claim working fluid and flowing of oil, the concrete structure and the action of scroll compressor 501 are described.Figure 18 is the detailed enlarged view of the M portion of Figure 17, and Figure 19 is the major component enlarged view of Figure 18, and Figure 20 is the assembling stereogram of oil feed pump portion, also has, and Figure 21 is near the longitudinal profile enlarged view the back pressure chamber.

At first, be that the center describes with flowing of working fluid.Get in the shell 8 from suction pipe 53, the working fluid that is made as suction pressure in the shell 8 through suction port 2e, is got in the suction chamber 105.Therefore, through with the rotation of motor 7 as the bent axle 6 of driving source, rotary vortex rotary part 3 rotatablely moves, and between two vortex body 2a, 3a, forms pressing chamber 100.Thus, the working fluid of suction chamber 105 is enclosed in the pressing chamber 100, and then, volume-diminished simultaneously, is passed on to center side.Like this, the working fluid that boosts to the ejection pressure sprays to ejection chamber 120 from ejiction opening 2d or bypass valve 22, through spraying pipe 52, flows out to the outside.

Secondly, be that the center describes with flowing of oil.Lodging in the oil feed pump 30 that also can drive through the rotation of bent axle 6 in the oil of store oil portion 125, is the vertical hole 6b of fuel feeding through the oil supply hole that connects bent axle 6 vertically, from the bottom to the top force feed.Split at four paths of the following stated by the oil of force feed.

The first fuel feeding road is via supplementary bearing fuel feeding transverse holes 6g, to the supplementary bearing fuel feeding road of supplementary bearing 25 fuel feeding.The second fuel feeding road is to pass through main bearing groove 6d from main bearing fuel feeding transverse holes 6c, behind main bearing 24 fuel feeding, flows into the minimum axle supporting fuel feeding road of flow path resistance of pressing chamber 100.The 3rd fuel feeding road be from the swivel bearing chamber 115 through swivel bearing groove 6e, behind swivel bearing 23 fuel feeding, flow into the minimum swivel bearing fuel feeding road of flow path resistance of pressing chamber 100.These second and third fuel feeding roads can be regarded as back pressure chamber and flow into the road.The 4th fuel feeding road be from swivel bearing chamber 115 via the wallboard transverse holes 3c in the rotation wallboard 3b, flow into the suction chamber fuel feeding road 130 with throttling action of suction chamber 105 through the suction chamber pore 3d that follows throttling.At this, wallboard transverse holes 3c implements hole processing from the side of rotation wallboard 3b, therefore with fixed bolt 130a seal side opening.

The oil and the working fluid that flow into suction chamber 105 through suction chamber fuel feeding road 130 together get into pressing chamber 100, improve the sealing of pressing chamber 100, suppress to reveal, and play the effect that improves compression performance.In addition, therefore this oil be low temperature not via bearing, do not heat the fluid in the suction chamber 105, avoids the reduction of volumetric efficiency, has the effect that improves compression performance.In addition, of the back, with suction chamber pore 3d decompression, therefore, through the gasification of the working fluid in the oil, oil is with in the vaporific inflow suction chamber 105.Thereby the leakage that this oil becomes in the pressing chamber 100 is easily flowed, and plays the effect of further raising sealing.

On the other hand, from swivel bearing fuel feeding road and the axle supporting fuel feeding road oil that flows into back pressure chamber 110 back pressure chamber 110 in, move, stirred by the jut of Euclidean ring 5 or rotary vortex rotary part 3, the gasification of the working fluid that promotes to dissolve herein, pressure sharply rises.Its result, it is higher than suction pressure that the pressure of back pressure chamber 110 is that back pressure becomes, and the desire that can the compressed fluids that overcome in the pressing chamber 100 be caused is given the attraction force of the pulling-off force that rotary vortex rotary part 3 draws back from fixed scroll 2 rapidly to rotary vortex rotary part 3.Thus, when common running continues, begin after starting just from script, rotary vortex rotary part 3 also compresses to fixed scroll 2 reliably, the stable reliably compressed action that continues.

But if back pressure becomes too high, then the power that applies in two scroll 2, effect between 3 increases, and causing that the compression performance that the mobile loss of sliding causes reduces.Therefore, be provided for when back pressure excessively rises, extract back pressure chamber oil or working fluid, that back pressure chamber 110 and the shell inner space that is connected with store oil portion 125 are communicated with out from back pressure chamber 110 and flow out road 135.Also have, flow out road 135 midway at this back pressure chamber, the difference that back pressure and suction pressure (pressure of shell inner space) are set surpasses specified value and then opens the back pressure control valve 26 of control.Back pressure control valve 26 has: compressed valve spring 26b, valve plate 26c and valve gap 26d, said specified value are the value of constant corresponding to the decrement of valve spring 26b.This back pressure is controlled under the situation as air-conditioning circuit compressor, together uses with above-mentioned bypass valve 22, under the operating condition of extremely wide scope, realizes best back pressure set thus, plays the effect that improves compression performance.

As stated, after oil feed pump 30 performance is increased to back pressure with oil and the working fluid that is dissolved in this, with its effect of supplying with to supplementary bearing 25, main bearing 24, swivel bearing 23, suction chamber 105 and back pressure chamber 110.Also have, back pressure control valve 26 performance control back pressures make it than the high specified value degree of suction pressure, simultaneously, and with oily effect of discharging from the space of back pressure chamber 110 in shell 8 with working fluid.Clearly can know from above explanation, the handover of oil feed pump 30 performance oil and the effect of boosting, therefore, the pump work quantitative change is many, and when the compression performance of scroll compressor 501 improved, the performance that improves oil feed pump 30 was necessary.

Therefore, the raising of the shape and size precision of the pump important document of the pump chamber 140 of formation oil feed pump 30 is vital.The oil feed pump 30 of this mode of execution has added covering pump chamber 140, and with the rotating mask that inner carrier 30a rotates integratedly, in addition, basic structure is identical with the oil feed pump of first mode of execution.Therefore, pump action identical with first mode of execution (with reference to Fig. 8), its action effect is also identical, therefore, only carries out the explanation relevant with rotating mask, omits other.Figure 19 is the longitudinal sectional drawing of oil feed pump portion (the M2 portion of Figure 17); Figure 20 is the enlarged elevation figure of oil feed pump meshing part (inner carrier 30a and external rotor 30b); Figure 21 is the assembling stereogram of oil feed pump portion, and Figure 22 is the explanatory drawing of the push to power relevant with the oil feed pump meshing part (30a, 30b) of Figure 20.

Use Figure 19, the structure of oil feed pump 30 is described.Setting is integrated with inner carrier 30a, covers the rotating mask 30x of pump chamber 140 often, and, only constitute pump case 30c by chassis 30c1 and pumping cylinder 30c2, give up cover in the pump eyelid retractor fixed configurations of first mode of execution.Assembling method is shown in figure 21, the parts of integrated inner carrier 30a and rotating mask 30x are rotated the oil feed pump axial region 6f of the eccentric configuration in underpart that is inserted in bent axle 6 freely after, the assembling pumping cylinder.Below, number of assembling steps identical with first mode of execution (with reference to Fig. 7)

Secondly, the action relevant with the rotating mask of oil feed pump is described.The thrust towards the below of the bent axle of stating after the utilization 6 will turn round in the external rotor 30b side application of force at the rotating mask 30x that inner carrier 30a is provided with.At this, shown in figure 20, make the thickness (short transverse) of external rotor 30b thicker slightly than the thickness of inner carrier 30a.At this, in order to explain, stress to illustrate the gap among Figure 20, the gap level of actual inner carrier side is about 1～100 μ m.Its result, the upper side side of external rotor and rotating mask 30x are connected airtight and slide to be moved, and downside side and chassis 30c1 connect airtight and slide mobilely, can the side clearance of external rotor 30b be made as roughly 0.Thus, can suppress leakage in the side clearance of external rotor 30b significantly.

Thereby; Do not improve inner carrier 30a and external rotor 30b (below; Both are added up are called meshing part) the situation of profile accuracy under increase substantially the performance of oil feed pump 30, therefore, have the effect that the energy efficiency of the minimizing that can realize processing cost simultaneously and scroll compressor 501 improves.It is also identical under the opposite situation of the magnitude relationship of the thickness of external rotor and inner carrier that effect is reduced in this side clearance, therefore, plays same effect.In addition, inner carrier 30a is clipped in bent axle 6 and external rotor 30b via rotating mask 30x, and external rotor 30b is clipped in inner carrier 30a and chassis 30d via rotating mask 30x, therefore, and the axial position of eastern meshing part 30a, 30b.Therefore, even under the big operating condition of pressure oscillation, also playing can stabilization fuel feeding pump performance, improves the effect of fuel feeding reliability.

Secondly, the power that applies to external rotor 30b to inner carrier 30a describes.This applies power usually; Can be through with bent axle 6 be arranged in the solid figure that inner carrier 30a, rotating mask 30x, the external rotor 30b of its underpart observe integratedly; With its surface segmentation is surface elemant, will carry out integration with whole surface and obtains in its normal vector (with the small area pixel as size) and the bent axle superior value that obtains in the pressure of this part of inner product towards the unit vector of top on axially.

Can know clearly that from Figure 17 and Figure 18 under the situation of this mode of execution, as the border, it is whole that back pressure puts on the top of bent axle 6, except the bottom surface of meshing part 30a, 30b, all is applied in suction pressure in the bottom with main bearing 24.If pressure reference is made as suction pressure, then for inner carrier 30a to the external rotor 30b side application of force, will be defined as greater than the amount of suction pressure under the situation of following (formula 1), have to set up (formula 2).

Δ P (p) ≡ p-(suction pressure) ... (formula 1)

Δ P (back pressure) * (crank spindle portion sectional area)＞(power that the above pressure of the suction pressure of meshing part bottom surface causes) ... (formula 2)

In this case, apply power and become following (formula 3).

Apply power=Δ P (back pressure) * (crank spindle portion sectional area)-(power that the above pressure of the suction pressure of meshing part bottom surface causes) ... (formula 3)

At this, the pressure that the above pressure of the suction pressure of meshing part bottom surface causes forms (formula 4) through will in the pressure distribution of meshing part bottom surface, being divided into back pressure zone and suction pressure zone by uncertain sealing area.

The power that the above pressure of the suction pressure of meshing part bottom surface causes

=Δ P (back pressure) * (back pressure region area) ... (formula 4)

Should (formula 4) bring (formula 2) and (formula 3) into, and derive as follows as the application of force of purpose and judge formula and apply the power calculating formula.

(crank spindle portion sectional area)＞(the back pressure region areas of two rotor bottom surfaces) ... (formula 2 ')

Apply power=Δ P (back pressure) * { (crank spindle portion sectional area)-(the back pressure region areas of two rotor bottom surfaces) } ... (formula 3 ')

The back pressure zone of this mode of execution is inequality at the rotational position of oil feed pump 30, but judges that in the application of force back pressure zone (cross-hauling of Figure 22) is less than crank spindle portion sectional area under the maximum situation in strict ejection zone (Fig. 8 (9)).Thus, inner carrier 30a reduces the side clearance of meshing part (30a, 30b) to the external rotor 30b application of force often.

In addition, the power of applying can be obtained by (formula 3 '), but in this mode of execution, uses back pressure control valve 26, and therefore, Δ P (back pressure) becomes its value of said specified value corresponding to the decrement of the valve spring 26b of back pressure control valve 26 in this formula.Thereby, through with the combination of the back pressure control mode of utilizing back pressure control valve 26, even under operating condition arbitrarily, also can the mean value that apply power be guaranteed to be constant value often.Therefore; Under operating condition arbitrarily; Also can the high-performance of oil feed pump 30 be can stably realize, even the high-performance of the scroll compressor 1 of realizing carrying this oil feed pump 30 and the effect of high fuel feeding reliability played with inner carrier 30a to the external rotor 30b application of force stably.

Make inner carrier 30a with respect to oil feed pump axial region 6f rotation freely in this mode of execution, therefore, inner carrier 30a carries out producing the rotation that the relative velocity of the parts of frictional force influence reduces with respect to amplitude peak.Its result reduces inner carrier 30a and with respect to the frictional loss of sliding between the parts that move, can realize the high-performance of oil feed pump 30, even plays the high performance effect of the scroll compressor 501 of realizing this oil feed pump 30 of lift-launch.In addition, in this mode of execution that rotating mask 30x and inner carrier 30a is integrated, but make these with complicated variant, come integratedly also can through fastening then.In this case, the high management of inner carrier 30a becomes easily, can realize the further high-performance of oil feed pump 30.

In addition, directly use the stepped part and the inner carrier 30a clamping complicated variant of bent axle 6, also can with applying to try hard to keep to hold.In this case, the possibility of the leakage between rotating mask 30x and the inner carrier 30a becomes high slightly, but owing to utilize the clamping of the power that applies, its possibility becomes minimum, in addition, does not need fasteningly, has the effect that can realize that cost reduces.In addition, in this mode of execution with inner carrier as driving side, but the external rotor side also can as driving side.In this case, link bent axle 6 and external rotor 30b, therefore, do not need the major component part, can be with these parts as rotating mask.

(the 8th mode of execution)

Secondly, use Figure 23, the 8th mode of execution of the present invention is described as the enlarged elevation figure of the meshing part (inner carrier 30a and external rotor 30b) after integrating.Surface at inner carrier 30a and rotating mask 30x is provided with conformable layer, and is in addition identical with the 7th mode of execution, therefore, only carries out the explanation relevant with conformable layer, omits other explanations.This conformable layer comprises: the integration of integrating easily in surface side easily layer 30a3 and its inboard be difficult to integrate but the integration layer of difficulty 30a2 that can carry out integration to a certain degree.This mode of execution is that the mother metal surface is corroded in the integration processing agent, and the mother metal that oozes out from here is with integration processing agent reaction the time, separates out the integration that forms on the surface situation of layer and part integration layer of difficulty of formation with integration processing agent reaction of corroding easily.

For example, as ferrous material, situation that forms the manganese phosphate overlay film above that etc. is equivalent to this with mother metal.In this case, original mother metal surface becomes and integrates layer and the border of integrating layer of difficulty easily.At this, when the 6a of pin portion inserts inner carrier 30a, integrate an easy layer 30a3 and rubbed with the hands, therefore, do not need to consider in advance the thickness of conformable layer, the diameter in the hole of design inner carrier, design is easily.Do not having under the situation of conformable layer, rotation is rocked little, but state in order to realize rotating swimmingly, and the strictness of having to is provided with diameter and the chimeric tolerance of the 6a of pin portion in the hole of inner carrier.

But in this mode of execution, interference portion is removed by integration; Can rotate swimmingly, and the conformable layer performance residual at the slip all-moving surface keeps oily effect; Therefore, that can realize rotating is further smooth and easy, and; Through forming oil film, produce damping, produce the effect of rocking that reduces axle.Therefore, the chimeric tolerance of the diameter in the hole of the inner carrier that relaxes and the 6a of pin portion also can, can cut down finished cost.In addition, in this mode of execution, inner carrier 30a is to the external rotor 30b application of force, and therefore, the integration of rotating mask 30x lower surface layer 30a3 is is easily worn and torn at short notice, its result, and inner carrier 30a moves the degree of wear downwards.

Its result, easy layer landfill integrated in inner carrier 30a lower surface that before integration, exists and the gap of chassis 30c1, can realize that the further leakage in the oil feed pump reduces.Therefore, can realize the high-performance of oil feed pump 30, even cutting knife carries the high performance effect of the scroll compressor 501 of this oil feed pump 30.This mode of execution is that the thickness with inner carrier is made as than the situation that is provided with inner carrier under the little situation of external rotor, but is made as under the situation littler than inner carrier at the thickness with external rotor, at external rotor conformable layer is set and also obtains same effect.In addition, at two meshing parts conformable layer being set certainly also can.

(the 9th mode of execution)

Secondly, use Figure 24, the 9th mode of execution of the present invention is described.Figure 24 is the longitudinal sectional drawing of oil feed pump portion (the M2 portion of Figure 17).The 9th mode of execution is inequality with first mode of execution aspect following, and other aspects are identical with first mode of execution, therefore, and omission repeat specification.

In this mode of execution, be provided with on supplementary bearing fuel feeding road link supplementary bearing fuel feeding transverse holes 6g and oil feed pump backside space 145, do not have a supplementary bearing oil supply 6h of throttling action basically.In other words, supplementary bearing fuel feeding transverse holes 6g and supplementary bearing oil supply 6h form the oil supply hole 6b of bent axle 6 and the access of oil feed pump backside space 145.This access is formed by the fuel feeding road that does not have throttling action basically.

Through said structure, the pressure of oil feed pump backside space 145 is remained back pressure (steady state value of suction pressure+regulation) reliably, and therefore, this oil supply performance oil feed pump back pressure imports the effect on road.If reference pressure is thought of as back pressure; The power that then applies is associated with the area in the suction pressure zone in the bottom surface of oil feed pump meshing part 30a, 30b often and takes advantage of the value that obtains in back pressure; Under the situation of any design of bent axle 6 or oil feed pump 30; Also bent axle 6 is depressed downwards reliably, thus, rotating mask to external rotor 30b by the application of force.Thus, the effect that has the reliability that improves oil feed pump.

And then through the pressure of oil feed pump backside space 145, ball bearing 25a is pushed to the top, and 25b connects airtight with the ball eyelid retractor.Its result, the annulus portion of the central authorities of fixed support bent axle 6 stablizes earth's axis supporting crankshaft 6, therefore, improves the reliability of bearing portion, has the effect of the reliability that improves scroll compressor 501.In addition, also reduce the friction factor of said bearing portion, also have the effect that can realize the high scroll compressor of energy efficiency 501.

(the tenth mode of execution)

Secondly, use Figure 25, the tenth mode of execution of the present invention is described.This mode of execution uses the motor 7 with cogging torque, and with when the angle of rotation of the inner carrier 30a of the rotation that is synchronized with bent axle is consistent with the eccentric direction of external rotor 30b, the roughly great mode of the cogging torque of motor 7 disposes motor 7 and oil feed pump 30.Also have, in addition identical with first mode of execution or the 7th mode of execution, therefore, omit other explanations.

Under the situation that the pump of this mode stops when the rotatable phase shown in Fig. 8 (5) or (13), external rotor 30b becomes rotation freely.This is because just in time disposed inner carrier 30a at the center of external rotor 30b.At this moment, if since certain effect, external rotor 30b rotation; The direction of pump groove 30b1 departs from (for example, two dashdotted situation of Figure 25) from the movement direction of inner carrier 30a, when then restarting; In order to proofread and correct departing from of other places, need the power of external rotor 30b rotation, the danger of poor starting takes place.Above-mentioned rotatable phase is the center of the inner carrier 30a situation consistent with the center of external rotor 30b, is the great situation of cogging torque of motor 7 in this mode of execution, therefore, under this rotatable phase, does not stop.

Even stop at this rotatable phase accidentally; Motor 7 is extremely unstable, and bent axle 6 rotates to the rotatable phase (minA of Figure 26, minB point) that the cogging torque before and after it becomes minimum rapidly, like this; When motor 7 cold compressors stop; Under the little state of cogging torque, stop, therefore, under the state consistent of the center of inner carrier 30a, not stopping with the center of external rotor 30b.Thereby, when compressor stops, not causing the rotation state freely of aforesaid external rotor 30b, play the effect of starting smoothly that realizes compressor often.

Yet under the situation that is provided with rotating mask 30x, the inner carrier 30a of driving side and the external rotor 30b of slave end also contact in the side.Thus; Extremely rarely under the overlapping state in the center of the center of external rotor 30b and inner carrier 30a; Compressor stops, and then, under the situation of external rotor 30b rotation; The vibration that produces in the scope of rocking of inner carrier 30a when restarting is transmitted to external rotor 30b, becomes the opportunity that the rotation of the external rotor 30b that the rotation of revising external rotor 30b departs from begins.Thus, the effect that also has easy mode compressor start.

Certainly, forming the oil feed pump that possesses rotatable phase a plurality of inner carrier 30a inequality also can.For example, consider stagger two inner carrier types or wrong each 60 ° three the inner carrier type etc. of blocking of 90 °.

Claims (16)

1. fluid machinery, it possesses: the energy mechanism of giving and accepting, the variation of giving the mechanics energy of following pressure or flow velocity for working fluid; Axle is rotated giving and accepting of power to the said energy mechanism of giving and accepting; Bearing supports said axle; Shell; Accommodate said energy give and accept mechanism, said axle and said bearing, said shell portion space within it is provided with store oil portion, and this store oil portion stores the oil of supplying with to said bearing; Said axle is offered the oil supply hole that is used for supplying with to said bearing said oil at the one of which end; And be provided with the oil feed pump of the oil that sucks from said store oil portion to said oil supply hole ejection, said fluid machinery is characterised in that

Said oil feed pump is provided with:

Inner carrier, it rotates with turning radius E with respect to the rotary middle spindle of said axle;

External rotor, its rotating center with respect to said axle supports to be rotated freely with the identical offset of said turning radius size of said inner carrier, and penetrates the pump groove that is provided with the said inner carrier of Spielpassung;

Pump case, it separates inner space of two pump chambers and said shell, and said two pump chambers are separated said pump groove by said inner carrier and formed;

The pump suction passage, it is connected suction pump chamber that volume in the said pump chamber enlarges and said store oil portion;

Pump ejection stream, it is connected volume dwindles in the said pump chamber ejection pump chamber and said oil supply hole,

Said pump case comprises:

Pumping cylinder, the periphery of said external rotor is supported in its rotation freely;

With the opposed chassis of shaft end of said axle and with the opposed cover in said chassis, it clips two sides of said external rotor and covers said pump chamber via micro-gap,

Said pump suction passage comprises: pump sucks the portion that is absorbed in, and connects the pump inlet hole that said pump sucks the portion that is absorbed in and said store oil portion,

Said pump sucks the portion that is absorbed in and on said chassis inner surface, is arranged at the zone of including in of departing from said ejection pump chamber, and comprises the position of including the zone in of said suction pump chamber,

Said pump ejection stream comprises: the pump ejection is absorbed in portion, reaches the pump ejection groove that the said pump ejection of connection is absorbed in portion and on said chassis inner surface, covers the escutcheon portion of said oil supply hole,

Said pump sprays the portion that is absorbed in and on said chassis inner surface, is arranged at the zone of including in of departing from said suction pump chamber, and comprises the position of including the zone in of said ejection pump chamber,

Pump ejection when said pump ejection groove is arranged on said chassis inner surface and comprises said ejection pump chamber ejection and finish is absorbed in portion's side separating part bit position, and wherein said pump ejection is absorbed in portion's side, and to separate the position be that said inner carrier is separated the pump groove and two of forming separate in the positions separation position that is absorbed in portion's one side near said pump ejection.

2. fluid machinery according to claim 1 is characterized in that,

Said pump ejection groove is arranged at when the ejection of said ejection pump chamber finishes, in the edge portion of said pump groove, the ejection pump chamber side that finishes in ejection of the edge minister degree that crosses said pump ejection groove is than sucking the big position of suction pump chamber side of finishing.

3. fluid machinery, it possesses: the energy mechanism of giving and accepting, the variation of giving the mechanics energy of following pressure or flow velocity for working fluid; Axle is rotated giving and accepting of power to the said energy mechanism of giving and accepting; Bearing supports said axle; Shell; Accommodate said energy give and accept mechanism, said axle and said bearing, said shell portion space within it is provided with store oil portion, and this store oil portion stores the oil of supplying with to said bearing; Said axle is offered the oil supply hole that is used for supplying with to said bearing said oil at the one of which end; And be provided with the oil feed pump of the oil that sucks from said store oil portion to said oil supply hole ejection, said fluid machinery is characterised in that

Said oil feed pump is provided with:

Inner carrier, it rotates with turning radius E with respect to the rotary middle spindle of said axle;

External rotor, its rotating center with respect to said axle supports to be rotated freely with the identical offset of said turning radius size of said inner carrier, and penetrates the pump groove that is provided with the said inner carrier of Spielpassung;

Pump case, it separates inner space of two pump chambers and said shell, and said two pump chambers are separated said pump groove by said inner carrier and formed;

The pump suction passage, it is connected suction pump chamber that volume in the said pump chamber enlarges and said store oil portion;

Pump ejection stream, it is connected volume dwindles in the said pump chamber ejection pump chamber and said oil supply hole,

Said pump case comprises:

Pumping cylinder, the periphery of said external rotor is supported in its rotation freely;

With the opposed chassis of shaft end of said axle and with the opposed cover in said chassis, it clips two sides of said external rotor and covers said pump chamber via micro-gap,

Said pump suction passage comprises: pump sucks the portion that is absorbed in, and connects the pump inlet hole that said pump sucks the portion that is absorbed in and said store oil portion,

Said pump sucks the portion that is absorbed in and on said chassis inner surface, is arranged at the zone of including in of departing from said ejection pump chamber, and comprises the position of including the zone in of said suction pump chamber,

Said inner carrier and the rotation integratedly of said axle,

Said pump ejection stream forms, and on said inner carrier, will spray stream towards the outer circumferential face of the inner carrier of said ejection pump chamber and said oil supply hole that interior all sides are provided with or the rotary pump that is connected with area of space that said oil supply hole is communicated with.

4. fluid machinery according to claim 3 is characterized in that,

Said pump when said rotary pump ejection stream is arranged at and comprises said ejection pump chamber ejection and finish sucks and is absorbed in portion's side separating part bit position.

5. fluid machinery according to claim 4 is characterized in that,

Said rotary pump ejection stream is arranged at, and when the ejection end of said ejection pump chamber, the suction pump chamber that the inner carrier outer circumferential side opening portion ratio suction of said rotary pump ejection stream finishes is more towards the position that sprays the ejection pump chamber side that finishes.

6. fluid machinery according to claim 5 is characterized in that,

Said rotary pump ejection stream forms the rotary pump ejection groove of the side end face, said chassis that is arranged at said inner carrier.

7. according to claim 1 or 3 described fluid machineries, it is characterized in that,

Surface in the mutual relative movement of said pump case or said inner carrier or said external rotor is formed with the integration overlay film.

8. according to claim 1 or 3 described fluid machineries, it is characterized in that,

The said energy mechanism of giving and accepting is formed scroll compression body.

9. fluid machinery according to claim 8 is characterized in that,

With begin when the vortex body vortex of said scroll compression body the position away from the moment, make the spray volume of said oil feed pump become the rotatable phase that maximum mode is set said oil feed pump.

10. according to claim 1 or 3 described fluid machineries, it is characterized in that,

Said pump case also comprises:

With the opposed chassis of shaft end of said axle, its side via micro-gap and said external rotor is opposed, and covers said pump chamber;

Rotating mask, its another side via micro-gap and said external rotor is opposed and cover said pump chamber, and said rotating mask and said inner carrier or said external rotor or the rotation integratedly of said axle.

11. fluid machinery according to claim 10 is characterized in that,

Said rotating mask and said inner carrier or said external rotor or said axle are integrated.

12. fluid machinery according to claim 11 is characterized in that,

Said rotating mask is to set the power of applying to the mode of the said inner carrier or the said external rotor application of force in relative rotation.

13. fluid machinery according to claim 12 is characterized in that,

Said shell forms suction pressure with the inner space, and the said energy mechanism of giving and accepting forms scroll compression body, and this scroll compression body possesses: have wallboard and on this wallboard, erect the fixed scroll of the vortex body that is provided with; Has wallboard and the rotation scroll of the vortex body that setting is provided with on this wallboard; Mesh said two scroll and form, and through dwindling volume, the pressing chamber of compression working fluid; Be arranged at the back side of said rotation scroll, and become the back pressure chamber that is higher than suction pressure and is lower than the intermediate pressure of ejection pressure,

The said power of applying is formed with the intermediate pressure of the said rotation scroll side end that the puts on said axle axle thrust as the source of generation.

14. fluid machinery according to claim 13 is characterized in that,

Said axle is provided with the oil feed pump back pressure and imports the road, and this oil feed pump back pressure imports that road makes between said oil feed pump and bearing supporter and is communicated with at oil feed pump backside space and said oil supply hole that the internal surface of said shell forms.

15. fluid machinery according to claim 13 is characterized in that,

Be provided with the back pressure control mechanism, its pressure with said back pressure chamber is that back pressure is made as the degree that is higher than the constant value of suction pressure.

16. according to claim 1 or 10 described fluid machineries, it is characterized in that,

With the generation source of said rotating power is that motor forms the motor with cogging torque; With when consistent with the eccentric direction of the angle of rotation of the synchronous said inner carrier (30a) of the rotation of said axle and said external rotor (30b); The cogging torque of said motor (7) reaches great mode, disposes said motor (7) and said oil feed pump (30).

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