CN104653459A

CN104653459A - Compressor

Info

Publication number: CN104653459A
Application number: CN201410773882.5A
Authority: CN
Inventors: 赖化鸿
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Midea Toshiba Compressor Corp; Guangdong Meizhi Compressor Co Ltd
Priority date: 2014-12-12
Filing date: 2014-12-12
Publication date: 2015-05-27
Anticipated expiration: 2034-12-12
Also published as: CN104653459B

Abstract

The invention discloses a compressor. The compressor comprises a shell, a compression mechanism, a support base and a thrust element, wherein the compression mechanism is arranged in the shell, and comprises a main bearing, an air cylinder component, an auxiliary bearing and a crankshaft, wherein the main bearing is arranged on the top of the air cylinder component; the auxiliary bearing is arranged on the bottom of the air cylinder component; the air cylinder component comprises an air cylinder with a compression cavity; the main shaft penetrates through the main bearing, the air cylinder component and the auxiliary bearing; the crankshaft is provided with an eccentric part positioned in the compression cavity; the support base is arranged on the lower end of the auxiliary bearing; the thrust element is arranged on the lower end of the crankshaft; the bottom of the thrust bearing props against the support base so as to enable the bottom surface of the eccentric part and the upper surface of the auxiliary bearing to be separated, and the contact center of the thrust element and the support base is positioned on the rotary central line of the crankshaft. According to the compressor, by the arrangement of the support base and the thrust element, the input force of the compressor is reduced to a great extent, and the reliability of the compressor is ensured.

Description

Compressor

Technical field

The present invention relates to Compressor Manufacturing technical field, especially relate to a kind of compressor.

Background technique

Point out in correlation technique, the bent axle of compressor and rotor owing to being subject to the various force action such as gravity, downward electromagnet pull, and finally act on the lower thrust surface of bent axle.But lower thrust surface is eccentric design, and Point of Strength is not in center of gravity, turning radius is comparatively large, and is sliding friction, and lubrication effect is also undesirable, thus causing the frictional work of consumption more, compressor performance declines, and larger on the further raising impact of compressor performance.

Summary of the invention

The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, one object of the present invention is to propose a kind of compressor, and the reliability of described compressor is high.

According to the compressor of the embodiment of the present invention, comprising: housing; Compressing mechanism, described compressing mechanism is located in described housing, described compressing mechanism comprises main bearing, cylinder assembly, supplementary bearing and bent axle, described main bearing is located at the top of described cylinder assembly, described supplementary bearing is located at the bottom of described cylinder assembly, and described cylinder assembly comprises the cylinder with compression chamber, and described bent axle runs through described main bearing, described cylinder assembly and described supplementary bearing, described bent axle has eccentric part, and described eccentric part is positioned at described compression chamber; Supporting base, described supporting base is located at the lower end of described supplementary bearing; And thrust piece, described thrust piece is located at the lower end of described bent axle, the bottom of described thrust piece and described supporting base only support to make the upper surface of the bottom surface of described eccentric part and described supplementary bearing be spaced apart from each other, and the contact center of described thrust piece and described supporting base is positioned on the gyration center line of described bent axle.

According to the compressor of the embodiment of the present invention, by arranging supporting base and thrust piece, compressor can be reduced largely and entering power, ensure the reliability of compressor.

Further, described thrust piece and described supporting base are that point cantact or face contact.

Alternatively, when described thrust piece contacts with described support seat surface, the surface of contact of described thrust piece and described supporting base be formed as with the described gyration center line of described bent axle on described supporting base be projected as the center of circle, disc that diameter is D, wherein said D meets: D≤5mm.

Alternatively, described thrust piece is the oval ball of thrust ball or thrust.

Further, the lower end of described bent axle is formed with thrust groove, being partially received in described thrust groove of described thrust piece.

Or alternatively, described thrust piece is thrust body, the bottom of described thrust body has plane or downward the first arc surface protruded.

Or alternatively, described thrust piece is thrust plate, and the center of the upper surface of described supporting base is provided with the projection upwards extended, the top of described projection has plane or the second arc surface protruding upward.

Alternatively, thrust plate is provided with between described thrust piece and described supporting base.

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

Further, described bent axle has center oilhole, and the lower end of described bent axle and/or described thrust piece are formed with at least one oil inlet hole, and the cross-section area sum of at least one oil inlet hole described is S, and wherein said S meets: wherein, described d is the diameter of the bottom of described center oilhole.

Alternatively, the minimum range between the bottom surface of described eccentric part and the upper surface of described supplementary bearing is L, and described L meets: L >=0.2mm.

Alternatively, described cylinder assembly comprises the multiple described cylinder arranged in the vertical direction, is provided with dividing plate between two adjacent described cylinders.

Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.

Accompanying drawing explanation

Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, 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 compressing mechanism shown in Fig. 1;

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

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

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

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

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

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

Reference character:

100: compressor;

1: housing; 21: main bearing; 22: cylinder; 23: supplementary bearing;

24: bent axle; 241: eccentric part; 242: center oilhole; 243: thrust groove; 244: oil inlet hole;

25: piston; 26: slide plate;

3: supporting base; 31: the first receiving grooves; 32: intercommunicating pore; 33: the second receiving grooves; 34: protruding;

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

5: motor; 51: stator: 52: rotor;

61: thrust plate; 62: ball.

Embodiment

Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.

In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.

In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", " second ", the feature of " the 3rd " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.

In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.

Below with reference to Fig. 1-Fig. 8, the compressor 100 according to the embodiment of the present invention is described.Wherein, compressor 100 can be rotary compressor.In description below the application, be described for rotary compressor for compressor 100.Certainly, those skilled in the art are appreciated that compressor 100 can also be the compressor of other type, and are not limited to rotary compressor.

As shown in Figure 1, according to the compressor 100 such as rotary compressor of the embodiment of the present invention, housing 1, compressing mechanism, supporting base 3 and thrust piece is comprised.

Housing 1 can vertically be arranged, and now the central axis of housing 1 vertically extends.Housing 1 is preferably rotary structure, to facilitate manufacturing.Compressor 100 such as rotary compressor also comprises motor 5, motor 5 and compressing mechanism are all located in housing 1, motor 5 and compressing mechanism are arranged in the vertical direction, and motor 5 is positioned at the top of compressing mechanism, motor 5 is connected with compressing mechanism to drive compressing mechanism to compress the refrigerant entered in it.

Specifically, motor 5 comprises stator 51 and rotor 52, and for example, referring to Fig. 1, rotor 52 is coaxially located in stator 51 rotationally, and now motor 5 is inner rotor motor.Certainly, motor 5 can also be external rotor electric machine (scheming not shown).

When such as rotary compressor is single cylinder compressor to compressor 100, as shown in Figure 1, cylinder assembly comprises a cylinder 22, now compressing mechanism comprises main bearing 21, an above-mentioned cylinder 22, supplementary bearing 23 and bent axle 24, wherein, main bearing 21 is located at the top of this cylinder 22, supplementary bearing 23 is located at the bottom of this cylinder 22, in cylinder 22, there is compression chamber, piston 25 is provided with in compression chamber, cylinder 22 is formed with radial extension and the vane slot be communicated with compression chamber, slide plate 26 is located in vane slot movably, and the periphery wall of the inner of slide plate 26 and piston 25 only supports.The upper end of bent axle 24 is connected with rotor 52, and main bearing 21, cylinder 22 and supplementary bearing 23 are run through in the lower end of bent axle 24, and bent axle 24 has eccentric part 241, and eccentric part 241 is positioned at compression chamber, and piston 25 is set in outside eccentric part 241.When motor 5 works, rotor 52 is with dynamic crankshaft 24 wraparound to turn center line to rotate, thus drives and be set in the piston 25 on the eccentric part 241 of bent axle 24 and roll along the inwall of compression chamber.It should be noted that, " interior " can be understood as the direction towards cylinder 22 center, and its opposite direction is defined as " outward ", namely away from the direction at cylinder 22 center.

When compressor 100 such as rotary compressor is multicylinder compressor such as duplex cylinder compressor, cylinder assembly comprises two cylinders 22 arranged in the vertical direction, be provided with dividing plate between two cylinders 22, all there is in each cylinder 22 compression chamber (scheming not shown).Certainly, when compressor 100 more than compressor 100 is three cylinders or three cylinders, cylinder assembly comprises the cylinder 22 of more than three or three that arrange in the vertical direction, and is equipped with dividing plate between two often adjacent cylinders 22.Be appreciated that other configuration example of multicylinder compressor such as duplex cylinder compressor etc. is as roughly the same with single cylinder compressor in main bearing 21, supplementary bearing 23 etc., do not repeat them here.

Supporting base 3 is located at the lower end of supplementary bearing 23.Thrust piece is located at the lower end of bent axle 24, and the bottom of thrust piece and supporting base 3 only support to make the upper surface of the bottom surface of eccentric part 241 and supplementary bearing 23 be spaced apart from each other, and namely the bottom surface of eccentric part 241 does not contact with the upper surface of supplementary bearing 23.Now thrust piece is between the lower end of bent axle 24 and supporting base 3, and supporting base 3 is for being supported on the lower end of bent axle 24 by thrust piece.The contact center of thrust piece and supporting base 3 is positioned on the gyration center line of bent axle 24.

Thus, when the bent axle 24 of compressor 100 such as rotary compressor and rotor 52 are subject to the various force action such as gravity, downward electromagnet pull, the various contacting point that finally can act on thrust piece and supporting base 3 with joint efforts, because the contact center of thrust piece and supporting base 3 is positioned on the gyration center line of bent axle 24, now Point of Strength is in the center of bent axle 24, thus turning radius is less, linear velocity is low, compressor can be reduced largely and enter power, also can ensure the reliability of compressor 100 simultaneously.

Preferably, as shown in Figure 2, the minimum range between the bottom surface of eccentric part 241 and the upper surface of supplementary bearing 23 is L, and wherein L meets: L >=0.2mm.Its concrete numerical value specifically can be selected according to actual requirement, and the present invention does not do concrete restriction to this.Thus, the bottom surface of eccentric part 241 can be spaced apart better with the upper surface of supplementary bearing 23, avoids above-mentioned various force action on the bottom surface of eccentric part 241, thus further increase the reliability of compressor 100.

According to the compressor 100 such as rotary compressor of the embodiment of the present invention, by arranging supporting base 3 and thrust piece, compressor can be reduced largely and entering power, ensure the reliability of compressor 100.

According to a further embodiment of the invention, thrust piece contacts for point cantact or face with supporting base 3.Such as, as shown in Figure 1, Figure 2, shown in Fig. 4-Fig. 6 and Fig. 8, thrust piece and supporting base 3 are point cantact, and the area of contact between thrust piece and supporting base 3 is little, thus friction between thrust piece and supporting base 3 is little, and the performance of compressor 100 is promoted.

Certainly, thrust piece can also contact in face with supporting base 3, as shown in Figure 7.Such as, when thrust piece and supporting base 3 contact, the surface of contact of thrust piece and supporting base 3 can be formed as with the gyration center line of bent axle 24 on supporting base 3 be projected as the center of circle, disc that diameter is D, now the contact center of thrust piece and supporting base 3 is positioned on the gyration center line of bent axle 24, and wherein D meets: D≤5mm.Thus, because the area of contact of thrust piece and supporting base 3 is less, thus friction between thrust piece and supporting base 3 is less, can promote the performance of compressor 100 equally.Be appreciated that the surface of contact of thrust piece and supporting base 3 can also be formed as ellipsoid, oval or polygon facet etc.

According to an embodiment of the present invention, with reference to Fig. 1-Fig. 5, thrust piece is the oval ball of thrust ball 41 or thrust.Thus, owing to be point cantact between the oval ball of thrust ball 41 or thrust and supporting base 3, effectively can reduce the friction between thrust piece and supporting base 3 like this, thus reduce compressor and enter power, the performance of raising compressor 100.In addition, the processing of thrust ball 41 or the oval ball of thrust is simple, and cost is low.

Further, the lower end of bent axle 24 is formed with thrust groove 243, being partially received in thrust groove 243 of thrust piece.Such as, as shown in Figure 2, thrust groove 243 can be formed to being recessed on by a part for the lower end surface of bent axle 24, the internal face of thrust groove 243 is formed as the shape suitable with the shape of the thrust piece such as outer surface of thrust ball 41, now the internal face of thrust groove 243 is formed as arc surface substantially, and the top of thrust piece is contained in thrust groove 243.Supporting base 3 is mounted to after on supplementary bearing 23, and thrust piece can only be against in thrust groove 243 by supporting base 3.

Thus, thrust groove 243 pairs of thrust pieces play spacing effect, can ensure that the contact center of thrust piece and supporting base 3 is positioned on the gyration center line of bent axle 24 all the time.In addition, because thrust piece is partially received in thrust groove 243, thus reduce thrust piece taking up room in the vertical direction.

Bent axle 24 is formed with center oilhole 242, center oilhole 242 can run through upper-end surface and the lower end surface of bent axle 24 along the axis of bent axle 24, thus the lubricant oil in oil sump bottom housing 1 can to enter into from the lower end of center oilhole 242 in center oilhole 242 and to flow to each friction pair of compressing mechanism, thus each friction pair of compressing mechanism is lubricated.

Thrust groove 243 is positioned at the lower end of center oilhole 242, and thrust Cao243Yu center oilhole 242 is communicated with, thus the lubricant oil in oil sump can be entered in center oilhole 242 by thrust groove 243.Wherein, when thrust piece is thrust ball 41 and center 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.

Supporting base 3 is formed with the first receiving groove 31, first receiving groove 31 to be recessed into downwards from the upper surface of supporting base 3, the bottom of thrust piece is suitable for being contained in the first receiving groove 31, and the diapire of the bottom of thrust piece and the first receiving groove 31 only supports, as shown in Figure 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 downward the first arc surface protruded.As shown in Figure 6, the top of thrust body 42 can be stretched into center oilhole 242 Nei Qieyu center oilhole 242 and be threaded, easy for installation, and when thrust body 42 changed by needs, the thrust body 42 of bent axle 24 lower end can be pulled down, change new thrust body 42.Certainly, thrust body 42 top can also with center oilhole 242 interference fit.Be appreciated that thrust body 42 can require specifically to select according to practical set with the concrete Placement of the lower end of bent axle 24, the present invention does not do concrete restriction to this.The bottom of thrust body 42 has the first arc surface, the first arc surface and supporting base 3 point cantact that protrude downwards.

As shown in Figure 7, the bottom of thrust body 42 has plane, and plane is preferably disk, and the diameter of disk can be less than or equal to 5mm, but is not limited thereto.

According to yet another alternative embodiment of the invention, thrust piece is thrust plate 43, and the center of the upper surface of supporting base 3 is provided with the projection 34 upwards extended, and the top of protruding 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, thrust plate 43 horizontal arrangement, second arc surface at top of protruding 34 and the lower surface point cantact of thrust plate 43.Wherein, protruding 34 preferably and supporting base 3 one-body molded.

Further, thrust plate 61 is provided with between thrust piece and supporting base 3.Such as, with reference to Fig. 1 composition graphs 2, supporting base 3 is formed, thrust piece is formed with the second receiving groove 33, thrust plate 61 can be contained in the second receiving groove 33, and the second receiving groove 33 can be formed by a part for the diapire of the first receiving groove 31 is recessed downwards, and the upper-end surface of thrust plate 61 is preferably concordant with the diapire of the first receiving groove 31, but be not limited thereto, the bottom of thrust piece is suitable for only supporting with the upper-end surface of thrust plate 61.Wherein, thrust plate 61 can adopt the higher material of hardness to make, to improve the wear resistance of thrust plate 61.Thus, by arranging the second receiving groove 33, thrust plate 61 can be arranged on supporting base 3 easily, and efficiency of assembling is high.

Certainly, supporting base 3 can also be provided with ball 62, wherein the bottom of thrust piece contacts with ball 62.As shown in Figure 4, the diapire of the second receiving groove 33 is formed with the 3rd recessed receiving groove downwards, the internal face of the 3rd receiving groove is roughly hemisphere face, lower half portion of ball 62 can be contained in the 3rd receiving groove, the top of ball 62 is roughly concordant with the upper-end surface of the second receiving groove 33, and the top of ball 62 contacts with the base point of thrust piece.Thus, by arranging the second receiving groove 33, ball 62 not easily rolls back and forth in the first receiving groove 31, thus effectively ensure that the reliability of thrust.

With reference to Fig. 3, the lower end of bent axle 24 and/or thrust piece are formed with oil inlet hole 244.That is, oil inlet hole 244 can be formed in the lower end of bent axle 24, also can be formed on thrust piece, or on the lower end being simultaneously formed in bent axle 24 and thrust piece.

Wherein, the lower end of bent axle 24 and/or thrust piece are formed with at least one oil inlet hole 244, the cross-section area sum of at least one oil inlet hole 244 is S, and wherein S meets: wherein, the diameter of the bottom of oilhole 242 centered by d.Specifically, the number of oil inlet hole 244 can be one or more.When the number of oil inlet hole 244 is one, the cross-section area of this oil inlet hole 244 should be more than or equal to when the number of oil inlet hole 244 is multiple, the cross-section area sum of multiple oil inlet hole 244 should be more than or equal to thus, the lubricant oil in oil sump can enter in center oilhole 242 better, ensure that each friction pair of compressing mechanism can lubricate more fully, high lubricating effect, and oil inlet hole 244 is easy to process.

Below with reference to Fig. 1-Fig. 8, the compressor 100 according to the multiple embodiment of the present invention is described.

Embodiment one,

In the present embodiment, as shown in Figure 1-Figure 3, thrust piece is thrust ball 41, the top of thrust ball 41 is engaged in the thrust groove 243 of bent axle 24 lower end, the lower end of supplementary bearing 23 is provided with supporting base 3, supporting base 3 is roughly down " several " font, supporting base 3 is formed with the first receiving groove 31, the bottom of thrust ball 41 can be contained in the first receiving groove 31, the diapire of the first receiving groove 31 is formed with the second receiving groove 33, the top of the second receiving groove 33 is opened wide, thrust plate 61 is provided with in second receiving groove 33, and the upper-end surface of thrust plate 61 is concordant with the diapire of the first receiving groove 31.The now bottom of thrust ball 41 and the upper-end surface point cantact of thrust plate 61, point of contact is positioned on the gyration center line of bent axle 24.

Thus, when compressor 100 such as rotary compressor work, bent axle 24 and rotor 52 are subject to the various Point of Strength of making a concerted effort such as gravity, downward electromagnet pull on the gyration center line of bent axle 24, turning radius is less, linear velocity is low, thus improves the performance of compressor 100 such as rotary compressor.And because the bottom of thrust ball 41 and the upper-end surface of thrust plate 61 are point cantact, thus frictional force is little, and the frictional work of consumption is less.

Further, see figures.1.and.2 and composition graphs 3, the lower end of bent axle 24 is formed with multiple oil inlet hole 244, and multiple oil inlet hole 244 is preferred uniform intervals distribution in the circumference of bent axle 24, and multiple oil inlet hole 244 is communicated with center oilhole 242.Be appreciated that the number of oil inlet hole 244 and the arrangement etc. on bent axle 24 specifically can be arranged according to actual requirement, the present invention does not make particular determination to this.

Supporting base 3 is formed with at least one intercommunicating pore 32, housing 1 inside is communicated with multiple oil inlet hole 244 by intercommunicating pore 32, thus the lubricant oil in oil sump can be entered in center oilhole 242 via multiple oil inlet hole 244 by intercommunicating pore 32.In the process, because lubricant oil can enter in the first receiving groove 31, thus can lubricate between thrust ball 41 and thrust plate 61, and high lubricating effect.

Embodiment two,

As shown in Figure 4, the present embodiment is roughly the same with the structure of embodiment one, and wherein identical parts adopt identical reference character, and difference is only: in the second receiving groove 33, be provided with ball 62.

Specifically, with reference to Fig. 4, the diapire of the second receiving groove 33 is formed with the 3rd receiving groove, 3rd receiving groove can be formed by a part for the diapire of the second receiving groove 33 is recessed downwards, the internal face of the 3rd receiving groove is formed as the shape suitable with the shape of the outer surface of ball 62, can be limited in supporting base 3 by ball 62 well like this.The bottom of thrust ball 41 and the top point cantact of ball 62.

Embodiment three,

As shown in Figure 5, the present embodiment is roughly the same with the structure of embodiment one, and wherein identical parts adopt identical reference character, and difference is only: cancel thrust plate 61.

Specifically, with reference to Fig. 5, thrust ball 41 directly only supports with the diapire of the first receiving groove 31, the now bottom of thrust ball 41 and the diapire point cantact of the first receiving groove 31.

Embodiment four,

As shown in Figure 6, the present embodiment is roughly the same with the structure of embodiment one, and wherein identical parts adopt identical reference character, and difference is: the first, thrust piece is thrust body 42; The second, the structure of supporting base 3 is different.

Specifically, with reference to Fig. 6, the top of thrust body 42 can be stretched into center oilhole 242 Nei Qieyu center oilhole 242 and be threaded, and thrust body 42 is formed and is communicated with the intercommunicating pore 32 of supporting base 3 and the oil inlet hole 244 of center oilhole 242.The bottom of thrust body 42 has the first arc surface protruded, the diapire point cantact of the first receiving groove 31 of the first arc surface and supporting base 3 downwards.Wherein, supporting base 3 is roughly U-shaped.

Embodiment five,

As shown in Figure 7, the present embodiment is roughly the same with the structure of embodiment four, and wherein identical parts adopt identical reference character, and difference is only: the bottom of thrust body 42 has plane.

Specifically, with reference to Fig. 7, the bottom of thrust body 42 has the plane of horizontal-extending, the diapire point cantact of the first receiving groove 31 of this plane and supporting base 3.

Embodiment six,

As shown in Figure 8, the present embodiment is roughly the same with the structure of embodiment four, and wherein identical parts adopt identical reference character, and difference is: the first, thrust piece is thrust plate 43; The second, the structure of supporting base 3 is different.

Specifically, with reference to Fig. 8, thrust plate 43 is located at the lower end of bent axle 24, thrust plate 43 horizontal arrangement, projection 34 is from the diapire formation protruding upward of the first receiving groove 31, the longitudinal cross-section of protruding 34 is roughly isosceles triangle, and the top of protruding 34 has the second arc surface, the lower surface point cantact of the second arc surface and thrust plate 43.Wherein, protruding 34 preferably and supporting base 3 one-body molded.

According to the compressor 100 such as rotary compressor of the embodiment of the present invention, the points of tangency of arc surface is adopted to contact due to bent axle 24 and supporting base 3 or facet contacts, turning radius is little, linear velocity is low, and the structure of compressor 100 is simple, effectively can reduce the friction between thrust piece and supporting base 3, can reduce compressor largely and enter power, also can ensure the reliability of compressor 100 simultaneously, thus improve the performance of compressor 100.

Be all known according to other configuration examples of the compressor 100 such as rotary compressor of the embodiment of the present invention to those skilled in the art as motor 5 grade and operation, be not described in detail here.

In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.

Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.

Claims

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

Housing;

Compressing mechanism, described compressing mechanism is located in described housing, described compressing mechanism comprises main bearing, cylinder assembly, supplementary bearing and bent axle, described main bearing is located at the top of described cylinder assembly, described supplementary bearing is located at the bottom of described cylinder assembly, and described cylinder assembly comprises the cylinder with compression chamber, and described bent axle runs through described main bearing, described cylinder assembly and described supplementary bearing, described bent axle has eccentric part, and described eccentric part is positioned at described compression chamber;

Supporting base, described supporting base is located at the lower end of described supplementary bearing; And

Thrust piece, described thrust piece is located at the lower end of described bent axle, the bottom of described thrust piece and described supporting base only support to make the upper surface of the bottom surface of described eccentric part and described supplementary bearing be spaced apart from each other, and the contact center of described thrust piece and described supporting base is positioned on the gyration center line of described bent axle.

2. compressor according to claim 1, is characterized in that, described thrust piece and described supporting base are that point cantact or face contact.

3. compressor according to claim 2, it is characterized in that, when described thrust piece contacts with described support seat surface, the surface of contact of described thrust piece and described supporting base be formed as with the described gyration center line of described bent axle on described supporting base be projected as the center of circle, disc that diameter is D, wherein said D meets: D≤5mm.

4. compressor according to claim 1, is characterized in that, described thrust piece is the oval ball of thrust ball or thrust.

5. compressor according to claim 4, is characterized in that, the lower end of described bent axle is formed with thrust groove, being partially received in described thrust groove of described thrust piece.

6. compressor according to claim 1, is characterized in that, described thrust piece is thrust body, and the bottom of described thrust body has plane or downward the first arc surface protruded.

7. compressor according to claim 1, is characterized in that, described thrust piece is thrust plate, and the center of the upper surface of described supporting base is provided with the projection upwards extended, and the top of described projection has plane or the second arc surface protruding upward.

8. compressor according to claim 1, is characterized in that, is provided with thrust plate between described thrust piece and described supporting base.

9. compressor according to claim 1, is characterized in that, described supporting base is provided with ball, the bottom of wherein said thrust piece and described ball contact.

10. compressor according to claim 1, it is characterized in that, described bent axle has center oilhole, and the lower end of described bent axle and/or described thrust piece are formed with at least one oil inlet hole, the cross-section area sum of at least one oil inlet hole described is S, and wherein said S meets: wherein, described d is the diameter of the bottom of described center oilhole.

11. compressors according to claim 1, is characterized in that, the minimum range between the bottom surface of described eccentric part and the upper surface of described supplementary bearing is L, and described L meets: L >=0.2mm.

12. compressors according to claim 1, is characterized in that, described cylinder assembly comprises the multiple described cylinder arranged in the vertical direction, are provided with dividing plate between two adjacent described cylinders.