CN104653459B

CN104653459B - Compressor

Info

Publication number: CN104653459B
Application number: CN201410773882.5A
Authority: CN
Inventors: 赖化鸿
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd
Priority date: 2014-12-12
Filing date: 2014-12-12
Publication date: 2017-08-29
Anticipated expiration: 2034-12-12
Also published as: CN104653459A

Abstract

The invention discloses a kind of compressor, including：Housing, compression mechanism, support base and thrust piece, compression mechanism is located in housing, compression mechanism includes base bearing, cylinder assembly, supplementary bearing and bent axle, base bearing is located at the top of cylinder assembly, supplementary bearing is located at the bottom of cylinder assembly, and cylinder assembly includes the cylinder with compression chamber, and bent axle runs through base bearing, cylinder assembly and supplementary bearing, bent axle has eccentric part, and eccentric part is located in compression chamber；Support base is located at the lower end of supplementary bearing；Thrust piece is located at the lower end of bent axle, and the bottom of thrust piece is only supported so that the bottom surface of eccentric part and the upper surface of supplementary bearing are spaced apart from each other with support base, and contact of the thrust piece with support base is centrally located on the centre of gyration line of bent axle.According to the compressor of the present invention, by setting support base and thrust piece, it can largely reduce compressor and enter power, it is ensured that the reliability of compressor.

Description

Compressor

Technical field

The present invention relates to compressor manufacturing technical field, more particularly, to a kind of compressor.

Background technology

Pointed out in correlation technique, the bent axle and rotor of compressor are due to by the various conjunctions such as gravity, downward electromagnet pull Power is acted on, and is ultimately applied on the lower thrust surface of bent axle.However, lower thrust surface designs to be eccentric, impetus is not in center of gravity On, radius of turn is larger, and is sliding friction, and lubricant effect is also undesirable, so that cause the frictional work of consumption more, compression Machine hydraulic performance decline, and it is larger on the further raising influence of compressor performance.

The content of the invention

It is contemplated that at least solving one of technical problem present in prior art.Therefore, one object of the present invention It is to propose a kind of compressor, the reliability of the compressor is high.

Compressor according to embodiments of the present invention, including：Housing；Compression mechanism, the compression mechanism is located at the housing Interior, the compression mechanism includes base bearing, cylinder assembly, supplementary bearing and bent axle, and the base bearing is located at the cylinder assembly Top, the supplementary bearing is located at the bottom of the cylinder assembly, and the cylinder assembly includes the cylinder with compression chamber, the song Axle runs through the base bearing, the cylinder assembly and the supplementary bearing, and the bent axle has eccentric part, and the eccentric part is located at institute State in compression chamber；Support base, the support base is located at the lower end of the supplementary bearing；And thrust piece, the thrust piece is located at institute The lower end of bent axle is stated, the bottom of the thrust piece is only supported with the support base so that the bottom surface of the eccentric part and the supplementary bearing Upper surface be spaced apart from each other, and thrust piece contact with the support base is centrally located at the centre of gyration line of the bent axle On.

Compressor according to embodiments of the present invention, by setting support base and thrust piece, can largely reduce pressure Contracting machine enters power, it is ensured that the reliability of compressor.

Further, the thrust piece is that point is contacted or face is contacted with the support base.

Alternatively, when the thrust piece is contacted with the support seat surface, thrust piece contact with the support base Face be formed as with the centre of gyration line of the bent axle on the support base be projected as the center of circle, a diameter of D disc, its Described in D meet：D≤5mm.

Alternatively, the thrust piece is thrust ball or thrust elliptical shape ball.

Further, the lower end of the bent axle is formed with thrust groove, and the thrust piece is partially received in the thrust groove It is interior.

Or alternatively, the thrust piece is thrust body, the bottom of the thrust body has plane or downwardly projecting the One arc surface.

Or alternatively, the thrust piece is thrust plate, the center of the upper surface of the support base, which is provided with, to be upwardly extended Projection, the raised top has plane or the second arc surface protruding upward.

Alternatively, thrust plate is provided between the thrust piece and the support base.

Or alternatively, the support base is provided with ball, wherein the bottom of the thrust piece and the ball contact.

Further, the bent axle have be formed with center oilhole, the lower end of the bent axle and/or the thrust piece to A few fuel feed hole, the cross-sectional area sum of at least one fuel feed hole is S, wherein the S is met：Its In, the d is the diameter of the bottom of the center oilhole.

Alternatively, the minimum range between the bottom surface of the eccentric part and the upper surface of the supplementary bearing is L, and the L expires Foot：L≥0.2mm.

Alternatively, the cylinder assembly includes multiple cylinders for setting in the vertical direction, described in adjacent two Dividing plate is provided between cylinder.

The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by the practice of the present invention.

Brief description of the drawings

The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined Substantially and be readily appreciated that, wherein：

Fig. 1 is the partial schematic diagram of the compressor according to first embodiment of the invention；

Fig. 2 is the partial schematic diagram of the compression mechanism shown in Fig. 1；

Fig. 3 is the stereogram of bent axle shown in Fig. 2 and thrust piece；

Fig. 4 is the partial schematic diagram of the compression mechanism according to second embodiment of the invention；

Fig. 5 is the partial schematic diagram of the compression mechanism according to third embodiment of the invention；

Fig. 6 is the partial schematic diagram of the compression mechanism according to four embodiment of the invention；

Fig. 7 is the partial schematic diagram of the compression mechanism according to fifth embodiment of the invention；

Fig. 8 is the partial schematic diagram of the compression mechanism according to sixth embodiment of the invention.

Reference：

100：Compressor；

1：Housing；21：Base bearing；22：Cylinder；23：Supplementary bearing；

24：Bent axle；241：Eccentric part；242：Center oilhole；243：Thrust groove；244：Fuel feed hole；

25：Piston；26：Slide plate；

3：Support base；31：First holding tank；32：Intercommunicating pore；33：Second holding tank；34：It is raised；

41：Thrust ball；42：Thrust body；43：Thrust plate；

5：Motor；51：Stator：52：Rotor；

61：Thrust plate；62：Ball.

Embodiment

Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.

In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", " under ", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " axial direction ", " radial direction ", The orientation or position relationship of instructions such as " circumferences " are, based on orientation shown in the drawings or position relationship, to be for only for ease of description originally Invention and simplified description, rather than instruction or the signified device of hint or element must be with specific orientation, with specific square Position construction and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying phase To importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second ", " the 3rd " are defined One or more this feature can be expressed or be implicitly included to feature.In the description of the invention, unless otherwise indicated, " multiple " are meant that two or more.

In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can It to be to be joined directly together, can also be indirectly connected to by intermediary, can be the connection of two element internals.For this area For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.

Compressor 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 8.Wherein, compressor 100 can be rotation Rotary compressor.In the description below the application, illustrated so that compressor 100 is rotary compressor as an example.Certainly, originally Technical staff in field is appreciated that compressor 100 can also be other types of compressor, and is not limited to rotary compression Machine.

As shown in figure 1, such as rotary compressor of compressor 100 according to embodiments of the present invention, including housing 1, compression Mechanism, support base 3 and thrust piece.

Housing 1 can vertically be set, and now the central axis of housing 1 vertically extends.Housing 1 is preferably Rotary structure, to facilitate processing and manufacturing.Such as rotary compressor of compressor 100 also includes motor 5, motor 5 and compressor Structure is each provided in housing 1, and motor 5 and compression mechanism are set in the vertical direction, and motor 5 is located at the top of compression mechanism, electricity Machine 5 is connected to drive compression mechanism to be compressed to entering the refrigerant in it with compression mechanism.

Specifically, motor 5 includes stator 51 and rotor 52, and for example, referring to Fig. 1, rotor 52 is coaxially rotatably arranged at In stator 51, now motor 5 is inner rotor motor.Certainly, motor 5 can also be external rotor electric machine (not shown).

When such as rotary compressor of compressor 100 is single cylinder compressor, as shown in figure 1, cylinder assembly includes one Cylinder 22, now compression mechanism include base bearing 21, said one cylinder 22, supplementary bearing 23 and bent axle 24, wherein, base bearing 21 The top of the cylinder 22 is located at, supplementary bearing 23, which is located in the bottom of the cylinder 22, cylinder 22, has compression chamber, is provided with compression chamber The vane slot for radially extending and being connected with compression chamber is formed with piston 25, cylinder 22, slide plate 26 is movably arranged at vane slot It is interior, and slide plate 26 the inner and piston 25 periphery wall stop to.The upper end of bent axle 24 is connected with rotor 52, and the lower end of bent axle 24 is passed through Base bearing 21, cylinder 22 and supplementary bearing 23 are worn, bent axle 24 has eccentric part 241, and eccentric part 241 is located in compression chamber, piston 25 It is set in outside eccentric part 241.When motor 5 works, rotor 52, around revolution center line rotation, is set in dynamic crankshaft 24 so as to drive Inwall of the piston 25 along compression chamber on the eccentric part 241 of bent axle 24 is rolled.It should be noted that " interior " can be understood as direction The direction at the center of cylinder 22, its opposite direction is defined as " outer ", i.e. the direction away from the center of cylinder 22.

When such as rotary compressor of compressor 100 is multicylinder compressor such as duplex cylinder compressor, cylinder assembly includes It is provided between two cylinders 22 set in the vertical direction, two cylinders 22 in dividing plate, each cylinder 22 and is respectively provided with compression chamber (not shown).Certainly, when compressor 100 is the compressor 100 of more than three cylinders or three cylinders, cylinder assembly is included in upper and lower Dividing plate is equipped between the cylinder 22 of three set up or more than three, and every two adjacent cylinders 22.It is appreciated that Other compositions of the multicylinder compressor such as duplex cylinder compressor such as base bearing 21, supplementary bearing 23 with single cylinder compressor substantially phase Together, it will not be repeated here.

Support base 3 is located at the lower end of supplementary bearing 23.Thrust piece is located at the lower end of bent axle 24, the bottom of thrust piece and support base 3 only support so that the bottom surface and the upper surface of supplementary bearing 23 of eccentric part 241 are spaced apart from each other, i.e. the bottom surface of eccentric part 241 and countershaft The upper surface for holding 23 is not contacted.Now thrust piece is located between the lower end of bent axle 24 and support base 3, and support base 3 is used for thrust Part is supported on the lower end of bent axle 24.Thrust piece contact with support base 3 is centrally located on the centre of gyration line of bent axle 24.

Thus, when the bent axle 24 and rotor 52 of such as rotary compressor of compressor 100 are drawn by gravity, downward electromagnetism It is various to make a concerted effort that the contact position of thrust piece and support base 3 is ultimately applied to during the various force actions such as power, due to thrust piece and branch The contact of support seat 3 is centrally located on the centre of gyration line of bent axle 24, and now impetus is in the center of bent axle 24, so as to rotate half Footpath is smaller, and linear velocity is low, can largely reduce compressor and enter power, while it is also ensured that the reliability of compressor 100.

Preferably, as shown in Fig. 2 the minimum range between the bottom surface of eccentric part 241 and the upper surface of supplementary bearing 23 is L, Wherein L is met：L≥0.2mm.Its concrete numerical value can specifically be selected according to actual requirement, and the present invention is not especially limited to this. Thus, the bottom surface of eccentric part 241 can be preferably spaced apart with the upper surface of supplementary bearing 23, it is to avoid above-mentioned various force actions On the bottom surface of eccentric part 241, so as to further increase the reliability of compressor 100.

Such as rotary compressor of compressor 100 according to embodiments of the present invention, by setting support base 3 and thrust piece, Compressor can largely be reduced and enter power, it is ensured that the reliability of compressor 100.

According to a further embodiment of the invention, thrust piece is that point is contacted or face is contacted with support base 3.For example, such as Fig. 1, Shown in Fig. 2, Fig. 4-Fig. 6 and Fig. 8, thrust piece is that point is contacted with support base 3, and the contact area between thrust piece and support base 3 is small, So as to which the friction between thrust piece and support base 3 is small, the performance of compressor 100 is lifted.

Certainly, thrust piece can be contacted with support base 3 with face, as shown in Figure 7.For example, when thrust piece connects with the face of support base 3 When touching, the contact surface of thrust piece and support base 3 can be formed as centre of gyration line being projected as on support base 3 with bent axle 24 The center of circle, a diameter of D disc, now thrust piece contact with support base 3 are centrally located on the centre of gyration line of bent axle 24, wherein D is met：D≤5mm.Thus, because the contact area of thrust piece and support base 3 is smaller, so that between thrust piece and support base 3 Friction is smaller, can equally lift the performance of compressor 100.It is appreciated that the contact surface of thrust piece and support base 3 can be with shape As ellipsoid, long disc or polygon facet etc..

According to the alternative embodiment of the present invention, reference picture 1- Fig. 5, thrust piece is that thrust ball 41 or thrust are oval Ball.Thus, due to being contacted between thrust ball 41 or thrust elliptical shape ball and support base 3 for, so can effectively it reduce only Friction between push piece and support base 3, so that reducing compressor enters power, improves the performance of compressor 100.In addition, thrust ball 41 or thrust elliptical shape ball processing it is simple, and cost is low.

Further, the lower end of bent axle 24 is formed with thrust groove 243, and thrust piece is partially received in thrust groove 243.Example Such as, as shown in Fig. 2 thrust groove 243 can by the lower surface of bent axle 24 it is a part of it is upwardly recessed formed, thrust groove 243 it is interior Wall is formed as the shape being adapted with the shape of the thrust piece such as outer surface of thrust ball 41, and now thrust groove 243 is interior Wall is formed generally as arc surface, and the top of thrust piece is contained in thrust groove 243.After support base 3 is attached on supplementary bearing 23, Support base 3, which can stop thrust piece, to be against in thrust groove 243.

Thus, thrust groove 243 plays spacing effect to thrust piece, it is ensured that in thrust piece contact with support base 3 The heart is always positioned on the centre of gyration line of bent axle 24.Further, since thrust piece is partially received in thrust groove 243, so as to reduce The space-consuming of thrust piece in the vertical direction.

Center oilhole 242 is formed with bent axle 24, center oilhole 242 can axially penetrate through the upper of bent axle 24 along bent axle 24 End face and lower surface, so that the lubricating oil in the oil sump of the bottom of housing 1 can enter center oil from the lower end of center oilhole 242 Hole 242 is interior and flows to each friction pair of compression mechanism, so as to be lubricated to each friction pair of compression mechanism.

Thrust groove 243 is located at the lower end of center oilhole 242, and thrust groove 243 is connected with center oilhole 242, so that oil sump Interior lubricating oil can be entered in center oilhole 242 by thrust groove 243.Wherein, when thrust piece be thrust ball 41 and in When heart oilhole 242 is circular hole, the diameter of thrust ball 41 is more than or equal to the diameter of the bottom of center oilhole 242.

The first holding tank 31 is formed with support base 3, the upper surface of the first holding tank 31 from support base 3 is downwardly concaved, only The bottom of push piece is suitable to be contained in the first holding tank 31, and the bottom of thrust piece and the bottom wall of the first holding tank 31 stop to such as Shown in Fig. 5.

According to another alternative embodiment of the present invention, thrust piece is thrust body 42, and the bottom of thrust body 42 has plane Or the first downwardly projecting arc surface.As shown in fig. 6, the top of thrust body 42 can stretch into the Nei Qieyu centers of center oilhole 242 Oilhole 242 is threadedly coupled, easy for installation, and when needing to change thrust body 42, can be torn the thrust body 42 of the lower end of bent axle 24 open Under, change new thrust body 42.Certainly, the top of thrust body 42 can also be interference fitted with center oilhole 242.It can manage Solution, thrust body 42 and the specific connected mode of the lower end of bent axle 24 can be selected according to practical set requirement is specific, and the present invention is right This is not especially limited.The bottom of thrust body 42 has the first downwardly projecting arc surface, and the first arc surface connects for 3 points with support base Touch.

As shown in fig. 7, the bottom of thrust body 42 has plane, plane is preferably disk, and the diameter of disk can be with small In equal to 5mm, but not limited to this.

According to yet another alternative embodiment of the invention, thrust piece is thrust plate 43, the center of the upper surface of support base 3 Provided with the projection 34 upwardly extended, the top of projection 34 has plane or the second arc surface protruding upward.For example, referring to Fig. 8, Thrust plate 43 is located at the lower end of bent axle 24, and thrust plate 43 is horizontally disposed, the second arc surface and the thrust plate 43 at the top of projection 34 Following table millet cake contact.Wherein, projection 34 is preferably integrally formed with support base 3.

Further, thrust plate 61 is provided between thrust piece and support base 3.For example, referring to Fig. 1 and Fig. 2 is combined, support base It is formed with 3, the second holding tank 33 is formed with thrust piece, thrust plate 61 can be contained in the second holding tank 33, second holds Groove 33 of receiving can be downwardly concaved by a part for the bottom wall of the first holding tank 31 to be formed, and the upper surface of thrust plate 61 is preferably with first The bottom wall of holding tank 31 is concordant, but not limited to this, the bottom of thrust piece be suitable to the upper surface of thrust plate 61 stop to.Wherein, only Push pedal 61 can be made of the higher material of hardness, to improve the wearability of thrust plate 61.Thus, accommodated by setting second Groove 33, thrust plate 61 is easily installed on support base 3, and efficiency of assembling is high.

Certainly, ball 62 is also provided with support base 3, the wherein bottom of thrust piece is contacted with ball 62.Such as Fig. 4 institutes Show, the 3rd holding tank being downwardly concaved, the internal face generally half of the 3rd holding tank are formed with the bottom wall of the second holding tank 33 Sphere, the latter half of ball 62 can be contained in the 3rd holding tank, the top of ball 62 and the upper end of the second holding tank 33 Face is substantially concordant, and the top of ball 62 is contacted with the base point of thrust piece.Thus, by setting the second holding tank 33, ball 62 are difficult to roll around in the first holding tank 31, so as to be effectively guaranteed the reliability of thrust.

Fuel feed hole 244 is formed with reference picture 3, the lower end of bent axle 24 and/or thrust piece.That is, fuel feed hole 244 can It to form the lower end in bent axle 24, can also be formed on thrust piece, or form the lower end in bent axle 24 and thrust piece simultaneously On.

Wherein, at least one fuel feed hole 244, at least one fuel feed hole are formed with the lower end of bent axle 24 and/or thrust piece 244 cross-sectional area sum is S, and wherein S is met：Wherein, centered on d the bottom of oilhole 242 diameter.Specifically For, the number of fuel feed hole 244 can be one or more.When the number of fuel feed hole 244 is one, the fuel feed hole 244 Cross-sectional area should be more than or equal toWhen fuel feed hole 244 number for it is multiple when, the cross-sectional areas of multiple fuel feed holes 244 it With should be more than or equal toThus, the lubricating oil in oil sump can be entered preferably in center oilhole 242, it is ensured that pressure Each friction pair of contracting mechanism can more fully lubricate, high lubricating effect, and fuel feed hole 244 is easy to process.

The compressor 100 according to multiple embodiments of the invention is described below with reference to Fig. 1-Fig. 8.

Embodiment one,

In the present embodiment, as shown in Figure 1-Figure 3, thrust piece is thrust ball 41, and the top of thrust ball 41 coordinates In the thrust groove 243 of the lower end of bent axle 24, the lower end of supplementary bearing 23 is provided with support base 3, and support base 3 generally falls " several " font, branch The first holding tank 31 is formed with support seat 3, the bottom of thrust ball 41 can be contained in the first holding tank 31, the first holding tank The second holding tank 33 is formed with 31 bottom wall, the top of the second holding tank 33 is opened wide, and thrust plate is provided with the second holding tank 33 61, and the upper surface of thrust plate 61 is concordant with the bottom wall of the first holding tank 31.The now bottom of thrust ball 41 and thrust plate 61 The contact of upper end millet cake, contact point is located on the centre of gyration line of bent axle 24.

Thus, when such as rotary compressor of compressor 100 works, bent axle 24 and rotor 52 are by gravity, downward The various impetus made a concerted effort such as electromagnet pull are on the centre of gyration line of bent axle 24, and radius of turn is smaller, and linear velocity is low, so as to carry The performance of such as rotary compressor of compressor 100 is risen.It is additionally, since the bottom of thrust ball 41 and the upper end of thrust plate 61 Face contacts for point, so that frictional force is small, the frictional work of consumption is less.

Further, referring to Figures 1 and 2 and Fig. 3 is combined, the lower end of bent axle 24 is formed with multiple fuel feed holes 244, Duo Gejin Oilhole 244 is perfectly even spaced apart in the circumference of bent axle 24, and multiple fuel feed holes 244 are connected with center oilhole 242.It can manage Solution, the number of fuel feed hole 244 and the arrangement on bent axle 24 etc. can specifically be set according to actual requirement, the present invention This is not particularly limited.

At least one intercommunicating pore 32 is formed with support base 3, intercommunicating pore 32 connects the inside of housing 1 with multiple fuel feed holes 244 It is logical, so that the lubricating oil in oil sump can be entered in center oilhole 242 by intercommunicating pore 32 via multiple fuel feed holes 244. During this, because lubricating oil can be entered in the first holding tank 31, so as to between thrust ball 41 and thrust plate 61 It is lubricated, and high lubricating effect.

Embodiment two,

As shown in figure 4, the present embodiment is roughly the same with the structure of embodiment one, wherein identical part is attached using identical Icon is remembered, the difference is that only：Ball 62 is provided with the second holding tank 33.

Specifically, it is formed with the 3rd holding tank on reference picture 4, the bottom wall of the second holding tank 33, the 3rd holding tank can be with It is downwardly concaved and is formed by a part for the bottom wall of the second holding tank 33, the internal face of the 3rd holding tank is formed as outer with ball 62 Ball 62, can so be limited in support base 3 by the shape that the shape on surface is adapted well.The bottom of thrust ball 41 Contacted with the top point of ball 62.

Embodiment three,

As shown in figure 5, the present embodiment is roughly the same with the structure of embodiment one, wherein identical part is attached using identical Icon is remembered, the difference is that only：Cancel thrust plate 61.

Specifically, reference picture 5, thrust ball 41 directly stops with the bottom wall of the first holding tank 31 to now thrust ball 41 bottom is contacted with the bottom wall point of the first holding tank 31.

Example IV,

As shown in fig. 6, the present embodiment is roughly the same with the structure of embodiment one, wherein identical part is attached using identical Icon remembers that difference is：Firstth, thrust piece is thrust body 42；Secondth, the structure of support base 3 is different.

Specifically, reference picture 6, the top of thrust body 42 can stretch into center oilhole 242 and with the spiral shell of center oilhole 242 Line is connected, and the intercommunicating pore 32 of connection support base 3 and the fuel feed hole 244 of center oilhole 242 are formed with thrust body 42.Thrust body 42 Bottom there is the first downwardly projecting arc surface, the first arc surface is contacted with the bottom wall point of the first holding tank 31 of support base 3. Wherein, support base 3 is generally U-shaped.

Embodiment five,

As shown in fig. 7, the present embodiment is roughly the same with the structure of example IV, wherein identical part is attached using identical Icon is remembered, the difference is that only：The bottom of thrust body 42 has plane.

Specifically, reference picture 7, the bottom of thrust body 42 has horizontal-extending plane, and the of the plane and support base 3 The bottom wall point contact of one holding tank 31.

Embodiment six,

As shown in figure 8, the present embodiment is roughly the same with the structure of example IV, wherein identical part is attached using identical Icon remembers that difference is：Firstth, thrust piece is thrust plate 43；Secondth, the structure of support base 3 is different.

Specifically, reference picture 8, thrust plate 43 is located at the lower end of bent axle 24, and thrust plate 43 is horizontally disposed, and projection 34 is from the The bottom wall of one holding tank 31 is protruding upward to be formed, the longitudinal cross-section generally isosceles triangle of projection 34, the top tool of projection 34 There is the second arc surface, the second arc surface is contacted with the following table millet cake of thrust plate 43.Wherein, projection 34 is preferably integral with support base 3 Shaping.

Such as rotary compressor of compressor 100 according to embodiments of the present invention, due to bent axle 24 with support base 3 using circle The points of tangency contact or facet contact of cambered surface, radius of turn is small, and linear velocity is low, and compressor 100 is simple in construction, can be with Effectively reduce the friction between thrust piece and support base 3, can largely reduce compressor and enter power, while can also protect The reliability of compressor 100 is demonstrate,proved, so as to improve the performance of compressor 100.

Compressor 100 according to embodiments of the present invention such as rotary compressor other constitute such as motors 5 and Operation is all to those skilled in the art known, is not detailed herein.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described Structure, material or feature are contained at least one embodiment of the present invention or example.In this manual, to above-mentioned term Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description Point can in an appropriate manner be combined in any one or more embodiments or example.

Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this The scope of invention is limited by claim and its equivalent.

Claims

1. a kind of compressor, it is characterised in that including：

Housing；

Compression mechanism, the compression mechanism is located in the housing, and the compression mechanism includes base bearing, cylinder assembly, countershaft Hold and bent axle, the base bearing is located at the top of the cylinder assembly, the supplementary bearing is located at the bottom of the cylinder assembly, institute Stating cylinder assembly includes the cylinder with compression chamber, and the bent axle runs through the base bearing, the cylinder assembly and the countershaft Hold, the bent axle has eccentric part, the eccentric part is located in the compression chamber；

Support base, the support base is located at the lower end of the supplementary bearing；And

Thrust piece, the thrust piece is located at the lower end of the bent axle, the bottom of the thrust piece only supported with the support base so that The bottom surface of the eccentric part and the upper surface of the supplementary bearing are spaced apart from each other, and thrust piece contact with the support base It is centrally located on the centre of gyration line of the bent axle, the thrust piece is that point is contacted or face is contacted with the support base, when described When thrust piece is contacted with the support seat surface, the contact surface of the thrust piece and the support base is formed as the institute with the bent axle State centre of gyration line and be projected as the center of circle, a diameter of D disc on the support base, wherein the D is met：D≤5mm.

2. compressor according to claim 1, it is characterised in that the thrust piece is thrust ball or thrust elliptical shape ball.

3. compressor according to claim 2, it is characterised in that the lower end of the bent axle is formed with thrust groove, described to stop Push piece is partially received in the thrust groove.

4. compressor according to claim 1, it is characterised in that the thrust piece is thrust body, the bottom of the thrust body Portion has plane or the first downwardly projecting arc surface.

5. compressor according to claim 1, it is characterised in that the thrust piece is thrust plate, the support base it is upper The center on surface is provided with the projection upwardly extended, and the raised top has plane or the second arc surface protruding upward.

6. compressor according to claim 1, it is characterised in that thrust is provided between the thrust piece and the support base Plate.

7. compressor according to claim 1, it is characterised in that the support base is provided with ball, wherein the thrust The bottom of part and the ball contact.

8. compressor according to claim 1, it is characterised in that the bent axle has under center oilhole, the bent axle At least one fuel feed hole is formed with end and/or the thrust piece, the cross-sectional area sum of at least one fuel feed hole is S, Wherein described S is met：Wherein, the d is the diameter of the bottom of the center oilhole.

9. compressor according to claim 1, it is characterised in that the bottom surface of the eccentric part and the upper table of the supplementary bearing Minimum range between face is L, and the L is met：L≥0.2mm.

10. compressor according to claim 1, it is characterised in that the cylinder assembly includes setting in the vertical direction Multiple cylinders, dividing plate is provided between two adjacent cylinders.