CN203614409U

CN203614409U - Rotary compressor

Info

Publication number: CN203614409U
Application number: CN201320717699.4U
Authority: CN
Inventors: 曹小军
Original assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Current assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Priority date: 2013-11-13
Filing date: 2013-11-13
Publication date: 2014-05-28
Anticipated expiration: 2023-11-13

Abstract

The utility model discloses a rotary compressor which comprises a casing, a compressing mechanism, a driving motor and a support assembly, wherein an exhaust pipe is arranged at the top of the casing; the compressing mechanism is arranged in the casing, and is provided with a crankshaft; the driving motor is arranged in the casing; the upper end part of the crankshaft extends upwards and exceeds a rotor of the driving motor; the support assembly comprises a rack and an auxiliary bearing; the auxiliary bearing is mounted on the rack, and is used for supporting the upper end part of the crankshaft; the rack is fixed in the casing, positioned at the top of the driving motor, used for collecting engine oil on the inner wall surface of the casing at the upper part of the rack, and used for conveying the collected engine oil to the auxiliary bearing and the upper end part of the crankshaft. The rotary compressor is provided with the support assembly, the support assembly comprises the rack and the auxiliary bearing; the rack may collect lubricating oil on the inner wall surface of the casing of the compressor, and convey the collected lubricating oil to the auxiliary bearing and the crankshaft for lubricating the auxiliary bearing.

Description

Rotary compressor

Technical field

The utility model relates to a kind of rotary compressor.

Background technique

In recent years, the rotary compressor being mounted in domestic air conditioner uprises gradually in global popularity rate, and the employing of the medium-and-large-sized rotary compressor using as commercial use air conditioner also increases gradually.Common medium-and-large-sized rotary compressor has all adopted the mode of variable-frequency motor and twin-tub, in the hope of improving efficiency and the reliability of compressor.

In medium-and-large-sized variable-frequency type rotary compressor, because the abrasion problem that perturbs the bent axle causing of bent axle, need to append auxiliary bearing and disperse the load to bent axle, but because auxiliary bearing is away from the oil sump of compressor, in the time of load running, cannot be lubricated fully and be produced an abrasion difficult problem, being greatly reduced the life-span of auxiliary bearing and bent axle.

Model utility content

The utility model is intended to solve at least to a certain extent one of above-mentioned technical problem of the prior art.For this reason, an object of the present utility model is to propose a kind of rotary compressor, this rotary compressor is provided with bearing assembly, bearing assembly comprises frame and auxiliary bearing, frame can be collected the lubricant oil on the internal face of housing of compressor, and the lubricant oil of collection is exported to auxiliary bearing and bent axle, for lubricated auxiliary bearing.

According to the utility model embodiment's rotary compressor, comprising: housing, the top of described housing is provided with outlet pipe; Compressing mechanism, described compressing mechanism is located in described housing, and described compressing mechanism has bent axle; Drive motor, it is interior for driving the central axis rotation of described bent axle around described bent axle that described drive motor is located at described housing, and the upper end portion of wherein said bent axle upwards extends beyond the rotor of described drive motor; And bearing assembly, described bearing assembly comprises frame and auxiliary bearing, described auxiliary bearing is arranged in described frame and for supporting the described upper end portion of described bent axle, described frame be fixed in described housing and the top that is positioned at described drive motor to collect machine oil on the internal face of the housing parts that is positioned at described frame top and the described upper end portion to described auxiliary bearing and described bent axle by the described oil delivery of collecting.

According to the utility model embodiment's rotary compressor, by the lubricant oil on frame assembling supporting member internal face being set and lubricant oil being exported between auxiliary bearing and the upper end portion of bent axle, for upper end portion and the auxiliary bearing of lubricated bent axle, thereby the wearing and tearing of auxiliary bearing and bent axle upper end portion are greatly improved, improve the working life of the two, guarantee reliability of operation, improved on the whole the efficiency of compressor.

In addition, according to the utility model embodiment's rotary compressor, can also there is following additional technical feature:

According to embodiments more of the present utility model, described frame comprises: oil-collecting cavity and link arm, the inner of described link arm is connected with described oil-collecting cavity and the outer end of described link arm is fixed on the internal face of described housing, described oil-collecting cavity is the unlimited tubular elements in top, and the bottom of described oil-collecting cavity has central through bore.Thus, can store more lubricant oil of being collected by link arm by oil-collecting cavity is set, thereby improve the lubrication effect to auxiliary bearing.

According to embodiments more of the present utility model, described auxiliary bearing comprises: support and flange part, described support is the cylindrical shape of both ends open and for supporting the described upper end portion of described bent axle, it is upper along place and be fixed on the diapire of described oil-collecting cavity that described flange part is connected to described support, and the lower end of described support is through described central through bore and to downward-extension and stretch out outside described frame.Thus, auxiliary bearing is arranged to the upper surface lower than oil-collecting cavity, can guarantees lubrication effect.

According to embodiments more of the present utility model, on described link arm, be provided with oil-collecting groove, the outer end of described oil-collecting groove extends to the internal face of described housing and the inner of described oil-collecting groove communicates with described oil-collecting inside cavity.By oil-collecting groove is set, can increase oil-collecting effect, be convenient to the lubricant oil of collection to export to oil-collecting cavity simultaneously.

According to embodiments more of the present utility model, described frame comprises: frame body and the link arm of annular, the inner of described link arm is connected with described frame body and the outer end of described link arm is fixed on the internal face of described housing.

According to embodiments more of the present utility model, described auxiliary bearing comprises: support, oil collection part and flange part, described support is the cylindrical shape of both ends open and for supporting the described upper end portion of described bent axle, the top that described oil collection part is connected to described support flow to the machine oil of described auxiliary bearing with storage by described frame and by described oil delivery to described support the described upper end portion with described bent axle, described flange part is connected to the upper along locating and being fixed on below described frame body of described oil collection part.Can store more lubricant oil of being collected by link arm by oil collection part is set, thereby improve the lubrication effect to auxiliary bearing.

According to embodiments more of the present utility model, described oil collection part is the unlimited tubular elements in top, the bottom of described oil collection part has center hole, and the last week of described support, the radial dimension of described oil collection part was greater than the radial dimension of described support along being connected on the inner circle wall of described center hole.

According to embodiments more of the present utility model, on described link arm, be provided with oil-collecting groove, the outer end of described oil-collecting groove extends to the internal face of described housing and the inner of described oil-collecting groove communicates with described oil collection part.By oil-collecting groove is set, can increase oil-collecting effect, be convenient to the lubricant oil of collection to export to oil collection part simultaneously.

According to embodiments more of the present utility model, described oil-collecting groove tilts to extend to the direction near described auxiliary bearing from described outer end towards described the inner.

Thus, can improve the flowing velocity of fluid.

According to embodiments more of the present utility model, the bottom surface of described oil-collecting groove be orthogonal to described Crankshaft to the angular range of plane be: 0 °-30 °.

Thus, can improve better the flowing velocity of fluid.

According to embodiments more of the present utility model, described link arm is multiple and along being circumferentially spaced apart from each other, each described link arm all radially extends.

According to embodiments more of the present utility model, on the outer circumferential face of the stator of described drive motor, be provided with multiple stator trimming grooves, described multiple stator trimming grooves be orthogonal to described Crankshaft to plane in orthographic projection and the orthographic projection of described multiple link arm in described plane along being circumferentially interspersed.Thus, can improve the oil-collecting effect of link arm.

According to embodiments more of the present utility model, on the inner peripheral surface of described support, be provided with axle bush or ball.Thus, can reduce the wearing and tearing of auxiliary bearing.

Accompanying drawing explanation

Fig. 1 is according to the partial schematic diagram of an embodiment's of the utility model rotary compressor;

Fig. 2 is according to the stereogram of an embodiment's of the utility model frame;

Fig. 3 is according to the plan view of an embodiment's of the utility model frame;

Fig. 4 is the sectional view along A-A in Fig. 3;

Fig. 5 is according to the stereogram of an embodiment's of the utility model auxiliary bearing;

Fig. 6 is according to the sectional view of an embodiment's of the utility model auxiliary bearing;

Fig. 7 is according to the partial schematic diagram of another embodiment's of the utility model rotary compressor;

Fig. 8 is according to the stereogram of another embodiment's of the utility model frame;

Fig. 9 is according to the plan view of another embodiment's of the utility model frame;

Figure 10 is the sectional view along C-C in Fig. 9;

Figure 11 is according to the stereogram of another embodiment's of the utility model auxiliary bearing;

Figure 12 is according to the sectional view of another embodiment's of the utility model auxiliary bearing.

Reference character:

Housing 1, outlet pipe 11;

Bent axle 2, upper end portion 21;

Drive motor 3, stator 31, rotor 32;

Bearing assembly 4, frame 41, oil-collecting cavity 411, diapire 4111, periphery wall 4112, central through bore 4113, link arm 412, oil-collecting groove 4121, frame body 413, auxiliary bearing 42, support 421, oil collection part 422, flange part 423.

Embodiment

Describe embodiment of the present utility model below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment who is described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.

In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.

In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or integral; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.

In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.

Describe in detail according to the utility model embodiment's rotary compressor below with reference to Fig. 1-Figure 12.

Can comprise housing 1, compressing mechanism, drive motor 3 and bearing assembly 4 according to the utility model embodiment's rotary compressor.

According to an embodiment of the present utility model, housing 1 can comprise main casing, upper shell and lower shell body, upper shell be located at main casing above, upper shell and main casing can be integrally welded, lower shell body is located at below main casing, lower shell body and main casing can be integrally welded, and upper shell, main casing and lower shell body are encircled into an installation cavity.Certainly, be understandable that, include but not limited to this according to housing 1 structure of the utility model embodiment's compressor.As shown in Figure 1 and Figure 7, the top of housing 1 is provided with outlet pipe 11, and for example outlet pipe 11 is weldingly fixed on upper shell, and a part for outlet pipe 11 is positioned at outside upper shell and another part is positioned at upper shell.

Compressing mechanism is located in housing, and concrete structure and the working principle etc. of compressing mechanism, by those skilled in the art is known, are therefore only done signal explanation simply here.

For example, compressing mechanism can be single cylinder structure, this single cylinder compressor structure can comprise main bearing, cylinder, supplementary bearing, bent axle 2, the structure such as piston and slide plate, main bearing be located at cylinder above, supplementary bearing is arranged on below cylinder, bent axle 2 runs through main bearing, cylinder and supplementary bearing and supported by main bearing and supplementary bearing, the top of bent axle 2 and rotor 32 are fixed and rotate with rotor 32, bent axle 2 has eccentric part, piston sleeve is outside eccentric part and be positioned at cylinder, slide plate is slidably disposed in the vane slot in cylinder, the tip of slide plate can extend in cylinder and be resisted against on the outer circumferential face of piston.

Be understandable that, compressing mechanism can be also double-cylinder structure or other structure, does not make particular determination here for the structure of compressing mechanism.

As shown in Figure 1 and Figure 7, drive motor 3 is located in housing and enclosure interior is isolated into upper chamber and lower chambers, drive motor 3 comprises stator 31 and rotor 32, rotor 32 is positioned at the inner side of stator 31, rotor 32 relative stator 31 can be rotated around the spin axis of rotor 32, and rotor 32 can be fixed into one with the top of bent axle 2, and stator 31 can be fixed on the internal face of housing, for example stator 31 can be welded and fixed with the internal face of main casing, but is not limited to this.

Drive motor 3 is for the central axis rotation of driving crank 2 flexing axles 2, and wherein the upper end portion 21 of bent axle 2 upwards extends beyond the rotor 32 of drive motor 3, as shown in Figure 1 and Figure 7.

As shown in Figure 1 and Figure 7, bearing assembly 4 comprises frame 41 and auxiliary bearing 42, auxiliary bearing 42 is arranged on the described upper end portion 21 for supporting crankshaft 2 in frame 41, auxiliary bearing 42, main bearing and supplementary bearing form the supporting of three places to bent axle 2 like this, thereby can greatly reduce bent axle 2 and rotate time, particularly the bent axle 2 when high speed rotating perturbs, reduce the wearing and tearing of bent axle 2, improve the life-span of bent axle 2.

Frame 41 is fixed in housing and is positioned at the top of drive motor 3, frame 41 is for collecting the machine oil on the internal face of the housing parts that is positioned at frame 41 tops, frame 41 is exported to the machine oil of collection the upper end portion 21 of auxiliary bearing 42 and bent axle 2, for the upper end portion 21 of lubricated bent axle 2 and the supporting fitting surface of auxiliary bearing 42, reduce the wearing and tearing of bent axle 2.

According to the utility model embodiment's rotary compressor, after compressor has assembled and before operation, can enclose by the outlet pipe 11 of case top the lubricant oil of capacity rating to the enclosure interior of compressor, wherein sub-fraction lubricant oil can stick between auxiliary bearing 42 and the upper end portion 21 of bent axle 2, can lubricate bent axle 2 upper end portions 21 and auxiliary bearing 42 after compressor start.

After compressor stable operation, be positioned on the internal face of frame 41 housing parts above and can adhere to oil droplet, along with the continuous operation of compressor, oil droplet can be cumulative, oil droplet is under the effect of gravity, can be along the internal face of housing toward current downflow, the upper end portion 21 that frame 41 can be collected these lubricant oil and lubricant oil be exported to auxiliary bearing 42 and bent axle 2, thereby lubricated bent axle 2, greatly improve the lubrication effect of bent axle 2 upper end portions 21 and auxiliary bearing 42, reliability and the life-span of having improved auxiliary bearing 42 and bent axle 2.

Thus, according to the utility model embodiment's rotary compressor, by the lubricant oil on frame 41 assembling supporting member internal faces being set and lubricant oil being exported between auxiliary bearing 42 and the upper end portion 21 of bent axle 2, for the upper end portion 21 and auxiliary bearing 42 of lubricated bent axle 2, thereby the wearing and tearing of auxiliary bearing 42 with bent axle 2 upper end portions 21 are greatly improved, in the working life of having improved the two, guaranteed reliability of operation, improved on the whole the efficiency of compressor.

According to an embodiment of the present utility model, as shown in Fig. 1-Fig. 6, frame 41 can comprise oil-collecting cavity 411 and link arm 412, the inner of link arm 412 is connected with oil-collecting cavity 411 and the outer end of link arm 412 is fixed on the internal face of housing 1, here, it should be noted that, the inner of link arm 412 refers to link arm 412 apart from the nearer one end of bent axle 2 central axis, the outer end of link arm 412 refers to link arm 412 apart from bent axle 2 central axis one end far away, in description below the utility model, if there is no specified otherwise, the outer end of the inner of link arm 412 and link arm 412 is all understood in this way.

As shown in Figure 2 and Figure 5, oil-collecting cavity 411 is the unlimited tubular elements in top, the bottom of oil-collecting cavity 411 has central through bore 4113, particularly, oil-collecting cavity 411 comprises diapire 4111 and periphery wall 4112, diapire 4111 has central through bore 4113, and periphery wall 4112 is located at the periphery of diapire 4111 along locating and upwards extending.

Further, as shown in Figure 5 and Figure 6, auxiliary bearing 42 comprises support 421 and flange part 423, the cylindrical shape that support 421 is both ends open, and support 421 is enclosed within on the outer circumferential face of upper end portion 21 of bent axle 2 and for the upper end portion 21 of supporting crankshaft 2.Flange part 423 is connected to the upper along locating and being fixed on the diapire 4111 of oil-collecting cavity 411 of support 421, for example flange part 423 is removably fastening by bolt with the diapire 4111 of oil-collecting cavity 411, and the lower end of support 421 is through central through bore 4113 and to downward-extension and stretch out outside frame 41.

Thus, the lubricant oil that link arm 412 is collected first flows to oil-collecting cavity 411, oil-collecting cavity 411 is for depositing lubricant oil, auxiliary bearing 42 is arranged in the upper surface of oil-collecting cavity 411 and auxiliary bearing 42 lower than the upper surface of oil-collecting cavity 411, the lubricant oil of oil-collecting cavity 411 will infiltrate in the flange part 423 of auxiliary bearing 42, fluid can flow to support 421 along flange part 423, thus the upper end portion 21 of lubricated support 421 and bent axle 2.

In brief, can increase by oil-collecting cavity 411 is set the function that fluid is deposited, auxiliary bearing 42 is arranged to can improve lubrication effect lower than oil-collecting cavity 411, guarantees that oil-collecting cavity 411 is smooth and easy to auxiliary bearing 42 fuel feeding.

Preferably, on link arm 412, be provided with oil-collecting groove 4121, the outer end of oil-collecting groove 4121 extends to the internal face of housing 1 and the inner of oil-collecting groove 4121 and oil-collecting cavity 411 internal communication, thus, be positioned at oil droplet on the internal face of oil-collecting groove 4121 housing parts above along inner walls surface current lower time, oil-collecting groove 4121 can be collected this parts of lubricating oil, and guides fluid to flow through oil-collecting groove 4121 until enter oil-collecting cavity 411.

Here, it should be noted that, the inner of oil-collecting groove 4121 refers to oil-collecting groove 4121 apart from the nearer one end of bent axle 2 central axis, the outer end of oil-collecting groove 4121 refers to oil-collecting groove 4121 apart from bent axle 2 central axis one end far away, in description below the utility model, if there is no specified otherwise, the outer end of the inner of oil-collecting groove 4121 and oil-collecting groove 4121 is all understood in this way.

According to another embodiment of the present utility model, as shown in Fig. 7-Figure 12, frame 41 can comprise link arm 412 and annular frame body 413, and the inner of link arm 412 is connected with frame body 413 and the outer end of link arm 412 is fixed on the internal face of housing 1.Further, as shown in Figure 11 and Figure 12, auxiliary bearing 42 comprises support 421, oil collection part 422 and flange part 423, the cylindrical shape that support 421 is both ends open, and support 421 is enclosed within on the outer circumferential face of upper end portion 21 of bent axle 2 and for the upper end portion 21 of supporting crankshaft 2.

The top that oil collection part 422 is connected to support 421 flows to the machine oil of auxiliary bearing 42 and the upper end portion 21 to support 421 and bent axle 2 by oil delivery with storage by frame 41, it is upper along place and be fixed on below frame body 413 that flange part 423 is connected to oil collection part 422, multiple bolton of passing through of for example flange part 423 and frame body 413.

Thus, the lubricant oil that link arm 412 is collected first flows to oil collection part 422, and oil collection part 422 is for depositing oil and oil being exported between support 421 and the upper end portion 21 of bent axle 2, thus the upper end portion 21 of lubricated support 421 and bent axle 2.

Further, in this embodiment, oil collection part 422 is the unlimited tubular elements in top, the bottom of oil collection part 422 has center hole 4221, the last week of support 421 is along being connected on the inner circle wall of center hole 4221, the radial dimension of oil collection part 422 is greater than the radial dimension of support 421, and oil collection part 422 can be deposited more lubricant oil like this.

Preferably, as Figure 8-Figure 10, on link arm 412, be provided with oil-collecting groove 4121, the outer end of oil-collecting groove 4121 extends to the internal face of housing and the inner of oil-collecting groove 4121 communicates with oil collection part 422, thus, be positioned at oil droplet on the internal face of oil-collecting groove 4121 housing parts above along inner walls surface current lower time, oil-collecting groove 4121 can be collected this parts of lubricating oil, and guides fluid to flow through oil-collecting groove 4121 until enter oil collection part 422.

According to preferred embodiments more of the present utility model, oil-collecting groove 4121 tilts to extend to the direction near auxiliary bearing 42 from outer end towards the inner, in other words, oil-collecting groove 4121 is oblique having a down dip from outside to inside, so that oil-collecting groove 4121 can be exported to the lubricant oil of collection oil-collecting cavity 411 or oil collection part 422 better.Alternatively, the bottom surface of oil-collecting groove 4121 and the angular range that is orthogonal to the axial plane of bent axle 2 are between 0 °-90 ° (α in Fig. 4 and Figure 10), and the lubricant oil that oil-collecting groove 4121 is collected like this can more successfully flow to oil-collecting cavity 411 or oil collection part 422.Preferably, this angle is between 0 °-30 °.Thus, the lubricant oil that can accelerate collection is to oil-collecting cavity 411 or the mobile speed of oil collection part 422.

According to embodiments more of the present utility model, link arm 412, for multiple and edge are circumferentially spaced apart from each other, so not only can improve the constant intensity of frame 41, makes link arm 412 can collect more lubricant oil simultaneously.Preferably, each link arm 412 all radially extends.In the example of Fig. 2 and Fig. 3 and Fig. 8 and Fig. 9, link arm 412 is three and equidistantly distributes.

Further, be provided with multiple stator trimming grooves on the outer circumferential face of the stator 31 of drive motor 3, multiple stator trimming grooves are circumferentially interspersed on the orthographic projection and the orthographic projection edge of multiple link arm 412 in this plane that are orthogonal in the axial plane of bent axle 2.In other words, see from the top down, multiple link arms 412 and multiple stator trimming grooves are interlaced arrangement on circumferentially.Like this, the oil droplet flowing down along housing 1 internal face can be subject to the gas-flow resistance of the refrigerant upwards flowing at stator trimming groove place, flows to link arm 412 thereby be beneficial to oil droplet, improves the oil-collecting effect of link arm 412.

According to embodiments more of the present utility model, on the inner peripheral surface of support 421, be provided with axle bush or ball, can reduce like this area of contact between support 421 and the upper end portion 21 of bent axle 2, in guaranteeing support effects, reduce the wearing and tearing of support 421.

In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiments or example.In addition, those skilled in the art can engage the different embodiments that describe in this specification or example and combine.

Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in scope of the present utility model, modification, replacement and modification.

Claims

1. a rotary compressor, is characterized in that, comprising:

Housing, the top of described housing is provided with outlet pipe;

Compressing mechanism, described compressing mechanism is located in described housing, and described compressing mechanism has bent axle;

Drive motor, it is interior for driving the central axis rotation of described bent axle around described bent axle that described drive motor is located at described housing, and the upper end portion of wherein said bent axle upwards extends beyond the rotor of described drive motor; And

Bearing assembly, described bearing assembly comprises frame and auxiliary bearing, described auxiliary bearing is arranged in described frame and for supporting the described upper end portion of described bent axle, described frame be fixed in described housing and the top that is positioned at described drive motor to collect machine oil on the internal face of the housing parts that is positioned at described frame top and the described upper end portion to described auxiliary bearing and described bent axle by the described oil delivery of collecting.

2. rotary compressor according to claim 1, it is characterized in that, described frame comprises: oil-collecting cavity and link arm, the inner of described link arm is connected with described oil-collecting cavity and the outer end of described link arm is fixed on the internal face of described housing, described oil-collecting cavity is the unlimited tubular elements in top, and the bottom of described oil-collecting cavity has central through bore.

3. rotary compressor according to claim 2, it is characterized in that, described auxiliary bearing comprises: support and flange part, described support is the cylindrical shape of both ends open and for supporting the described upper end portion of described bent axle, it is upper along place and be fixed on the diapire of described oil-collecting cavity that described flange part is connected to described support, and the lower end of described support is through described central through bore and to downward-extension and stretch out outside described frame.

4. rotary compressor according to claim 2, is characterized in that, is provided with oil-collecting groove on described link arm, and the outer end of described oil-collecting groove extends to the internal face of described housing and the inner of described oil-collecting groove communicates with described oil-collecting inside cavity.

5. rotary compressor according to claim 1, it is characterized in that, described frame comprises: frame body and the link arm of annular, the inner of described link arm is connected with described frame body and the outer end of described link arm is fixed on the internal face of described housing.

6. rotary compressor according to claim 5, it is characterized in that, described auxiliary bearing comprises: support, oil collection part and flange part, described support is the cylindrical shape of both ends open and for supporting the described upper end portion of described bent axle, the top that described oil collection part is connected to described support flow to the machine oil of described auxiliary bearing with storage by described frame and by described oil delivery to described support the described upper end portion with described bent axle, described flange part is connected to the upper along locating and being fixed on below described frame body of described oil collection part.

7. rotary compressor according to claim 6, it is characterized in that, described oil collection part is the unlimited tubular elements in top, the bottom of described oil collection part has center hole, the last week of described support, the radial dimension of described oil collection part was greater than the radial dimension of described support along being connected on the inner circle wall of described center hole.

8. rotary compressor according to claim 5, is characterized in that, is provided with oil-collecting groove on described link arm, and the outer end of described oil-collecting groove extends to the internal face of described housing and the inner of described oil-collecting groove communicates with described oil collection part.

9. according to the rotary compressor described in claim 4 or 8, it is characterized in that, described oil-collecting groove tilts to extend to the direction near described auxiliary bearing from described outer end towards described the inner.

10. rotary compressor according to claim 9, is characterized in that, the bottom surface of described oil-collecting groove be orthogonal to described Crankshaft to the angular range of plane be: 0 °-30 °.

11. according to the rotary compressor described in claim 2 or 5, it is characterized in that, described link arm is multiple and along being circumferentially spaced apart from each other, each described link arm all radially extends.

12. rotary compressors according to claim 11, it is characterized in that, on the outer circumferential face of the stator of described drive motor, be provided with multiple stator trimming grooves, described multiple stator trimming grooves be orthogonal to described Crankshaft to plane in orthographic projection and the orthographic projection of described multiple link arm in described plane along being circumferentially interspersed.

13. according to the rotary compressor described in claim 3 or 6, it is characterized in that, is provided with axle bush or ball on the inner peripheral surface of described support.