CN204900259U - Rotary compressor and bent axle thereof - Google Patents

Rotary compressor and bent axle thereof Download PDF

Info

Publication number
CN204900259U
CN204900259U CN201520480275.XU CN201520480275U CN204900259U CN 204900259 U CN204900259 U CN 204900259U CN 201520480275 U CN201520480275 U CN 201520480275U CN 204900259 U CN204900259 U CN 204900259U
Authority
CN
China
Prior art keywords
eccentric
bent axle
main shaft
compressor
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201520480275.XU
Other languages
Chinese (zh)
Inventor
吴灏
刘科种
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Midea Toshiba Compressor Corp
Guangdong Meizhi Compressor Co Ltd
Anhui Meizhi Precision Manufacturing Co Ltd
Original Assignee
Guangdong Meizhi Compressor Co Ltd
Anhui Meizhi Precision Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Meizhi Compressor Co Ltd, Anhui Meizhi Precision Manufacturing Co Ltd filed Critical Guangdong Meizhi Compressor Co Ltd
Priority to CN201520480275.XU priority Critical patent/CN204900259U/en
Application granted granted Critical
Publication of CN204900259U publication Critical patent/CN204900259U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a rotary compressor and bent axle thereof. The bent axle includes main shaft portion and forms the eccentric portion in main shaft portion, is formed with side cut portion in the off -centre portion, and side cut portion has a perfect understanding the up end of off -centre and/or has a perfect understanding the lower terminal surface of off -centre. According to the utility model discloses the bent axle under the prerequisite that the offset is unchangeable that keeps the bent axle, lightens the eccentric quality of bent axle, shortens the distance of the skew rotation center axis of focus of bent axle, reduces to use the rotary compressor's of this bent axle the eccentric inertial force of rotation simultaneously, reduces the vibration and the noise of compressor, improves the long -time maintainability of compressor. And the reduction of rotatory eccentric inertial force, the weight of compressor inner equilibrium piece can be be convenient for alleviate or even the balancing piece avoided using to reduce compressor manufacturing cost, the balancing piece received in the time of can reducing to operate simultaneously gas resistance improves the efficiency of compressor.

Description

Rotary compressor and bent axle thereof
Technical field
The utility model relates to compressor field, especially relates to a kind of rotary compressor and bent axle thereof.
Background technique
For rotary compressor, its main working parts is the rolling piston be nested on eccentric crankshaft, when compressor electric motor in the energized state, drive rolling piston is done eccentric motion by the eccentric crankshaft be connected with rotor in pump body compression chamber, thus realizes compression to cold media air.This kind of mechanism due to structure simple, compression efficiency is high, is therefore widely used in various technical field of refrigeration equipment.
Owing to have employed eccentric rotary structure, not on the rotary shaft, therefore compressor is in the running by generation rotating inertia force for the center of gravity of running gear, and eccentric direction is pointed in its direction.The existence of eccentric inertial force can make the vibration of compressor rise, and affects vibration and the pipeline reliability of compressor and refrigeration system, also can bring noise problem, affect refrigeration system comfort.
For solving the problem, in the design of existing compressor, offset mass eccentricity at two ends of rotor configuration equilibrium block.Adopt such method effectively can reduce noise and the vibration of compressor, but be arranged on rotor due to equilibrium block, for avoiding the decline of electric efficiency, equilibrium block material magnetic conduction Capability Requirement is comparatively strict, causes equilibrium block cost of material higher.In addition, after rotor increases equilibrium block, in compressor operation process, equilibrium block will be subject to very large gas force effect, increase the running resistance of compressor, result in the decline of compressor efficiency, in the middle of compressor High Rotation Speed, equilibrium block creates comparatively Great inertia power even, and this inertial force acts on bent axle also to be increased the abrasion caused between bent axle and bearing.
There is the problem that equilibrium block quality is excessive, crankshaft eccentric inertial force causes more greatly reliability to reduce in the rotary compressor in correlation technique.Inventor finds through research and a large amount of experiments, and in compressor, the eccentric mass of eccentric movement component is excessive to cause the excessive reason of equilibrium block quality to be.Therefore, inventor finds, the inertial force of eccentric mass to reduction bent axle reducing eccentric movement component, the quality reducing equilibrium block have significant effect.
For this reason, the utility model aims to provide a kind of bent axle, and rotary compressor uses this bent axle, can be beneficial to the weight reducing equilibrium block in rotary compressor.
Another object of the present utility model is to provide a kind of rotary compressor with above-mentioned bent axle.
According to bent axle of the present utility model, described bent axle is used for rotary compressor, described bent axle comprises main shaft part and is formed in the eccentric part in described main shaft part, described eccentric part is formed with trimming portion, the upper-end surface of the through described eccentric part in described trimming portion and/or the lower end surface of through described eccentric part.
According to bent axle of the present utility model, by arranging trimming portion on eccentric part, thus keeping under the prerequisite that the offset of bent axle is constant, alleviate the eccentric mass of bent axle, shorten the distance of the deviation of gravity center rotating center axis of bent axle, reduce the rotating eccentricity inertial force of the rotary compressor using this bent axle simultaneously, reduce vibration and the noise of compressor, improve the reliability of compressor long time running.And the minimizing of rotating eccentricity inertial force, the weight can being convenient to alleviate compressor inner equilibrium block even avoids balance block, thus reduces Compressor Manufacturing cost, and air resistance when simultaneously can reduce to operate suffered by equilibrium block, improves the efficiency of compressor.
In certain embodiments, the upper-end surface of the through described eccentric part in described trimming portion and lower end surface.
In certain embodiments, described trimming portion is positioned at the side of the central axis towards described eccentric part of the first longitudinal plane, and described first longitudinal plane is central axis by described main shaft part and is orthogonal to the plane of the line of centres of described main shaft part and described eccentric part.Thus, the center of gravity of eccentric part amesialityly to move towards the side, center of main shaft part as much as possible by by original, thus obviously shorten the distance of the deviation of gravity center rotating center axis of bent axle, the further rotating eccentricity inertial force reducing the rotary compressor using this bent axle, reduce vibration and the noise of compressor, conveniently alleviate the weight of compressor inner equilibrium block.
Particularly, described trimming portion is about symmetrical by the second longitudinal plane of the central axis of described main shaft part and the central axis of described eccentric part.Thus, the center of gravity of eccentric part can be made to be positioned on the second longitudinal plane, the amount of calculation of crankshaft quality central point can be reduced, be convenient to the whole machine balancing analysis of compressor eccentric system.
In certain embodiments, described eccentric part is also provided with loss of weight equalizing orifice.Thus, the eccentric mass of eccentric part can significantly reduce.
Particularly, described loss of weight equalizing orifice comprises: center lightening hole, and described center lightening hole is about symmetrical by described second longitudinal plane of the central axis of described main shaft part and the central axis of described eccentric part.
Alternatively, described center lightening hole opens wide towards described trimming portion.Thus, the eccentric mass of eccentric part can reduce further.
Further, described loss of weight equalizing orifice comprises: sidepiece lightening hole, and described sidepiece lightening hole is positioned at the both sides of described center lightening hole and symmetrical about described second longitudinal plane.
Described eccentric part comprises: the first arc plate, first connecting plate, second arc plate and the second connecting plate, the first end of described first arc plate and described second arc plate is respectively to described first longitudinal plane, described first connecting plate and described second connecting plate are between described first arc plate and described second arc plate, described first connecting plate is connected described main shaft part respectively with the first end of described second connecting plate, second end of described first arc plate is connected to limit a described sidepiece lightening hole with described main shaft part with the second end of described first connecting plate, second end of described second arc plate is connected to limit sidepiece lightening hole described in another with described main shaft part with the second end of described second connecting plate, described first connecting plate, described center lightening hole is limited between second connecting plate and described main shaft part.
Alternatively, the tangent plane that described trimming portion is formed on described eccentric part is parallel to the central axis of described main shaft part.Thus, the processing of trimming portion is more convenient, and the cost of production of bent axle is lower, and the eccentric mass of eccentric part can significantly reduce
According to the rotary compressor of the utility model embodiment, comprise the bent axle according to the utility model above-described embodiment.
Additional aspect of the present utility model 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 utility model.
Model utility content
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of existing rotary compressor;
Fig. 2 is the sectional structure schematic diagram of the bent axle according to the utility model embodiment;
Fig. 3 is the cross-sectional schematic in K-K direction in edge in Fig. 2;
Fig. 4 is the sectional structure schematic diagram of the bent axle according to the utility model embodiment;
Fig. 5 is the cross-sectional schematic in M-M direction in edge in Fig. 4;
Fig. 6 is the sectional structure schematic diagram of the bent axle according to the utility model embodiment;
Fig. 7 is the cross-sectional schematic in N-N direction in edge in Fig. 6.
Reference character:
100: rotary compressor;
1: exhaust manifolds; 2: upper shell; 3: main casing; 4: stator; 5: rotor; 6: bent axle; 60: center oil through; 61: main shaft part; 62: eccentric part; 7: upper bearing (metal); 8: cylinder; 9: lower bearing; 10: lower shell body; 11: slide plate; 12: piston; 120: center hole; 13: equilibrium block; 14: liquid-storage container;
A: housing; B: motor; C: compressing mechanism; V: receiving cavity;
S1: the upper-end surface of eccentric part; S2: the lower end surface of eccentric part; S3: the outer circumferential face of eccentric part;
L1: the central axis of main shaft part; L2: the central axis of eccentric part; P1P2: the first longitudinal plane; P3P4: the second longitudinal plane; E: the offset of bent axle; O1: the central point on the cross section of main shaft part; O2: the central point on the cross section of eccentric part;
66: trimming portion; 63: loss of weight equalizing orifice; 631: center lightening hole; 632: sidepiece lightening hole;
621: the first arc plates; 622: the second arc plates; 623: the first connecting plates; 624: the second connecting plates.
Embodiment
Be described below in detail embodiment of the present utility model, 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.Be exemplary below by the embodiment be 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 ", " highly ", " width ", " thickness ", " on ", D score, " 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 utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " 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 ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can 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, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
Describe the bent axle 6 according to the utility model embodiment below with reference to Fig. 1-Fig. 7, bent axle 6 is for rotary compressor 100.
Particularly, as shown in Figure 1, rotary compressor 100 comprises: housing A, motor B and compressing mechanism C.Housing A is seal container, limits receiving cavity V in housing A, and motor B and compressing mechanism C is all located in receiving cavity V.In the example illustrated in figure 1, housing A comprises main casing 3, upper shell 2 and lower shell body 10, and main casing 3 is formed as the tubular of upper and lower both ends open, and upper shell 2 and lower shell body 10 are located at the two ends up and down of main casing 3 respectively.Rotary compressor 100 also comprises exhaust manifolds 1, and exhaust manifolds 1 to be located on housing A and to be communicated with receiving cavity V, and in the example of fig. 1, exhaust manifolds 1 are connected on upper shell 2.
As shown in Figure 1, motor B comprises stator 4 and coordinates the rotor 5 rotated with stator 4.In the example of fig. 1, motor B is inner rotor motor, is namely enclosed within rotor 5 outside stator 4.
As shown in Figure 1, compressing mechanism C comprises bent axle 6, cylinder assembly, lower bearing 9, upper bearing (metal) 7, piston 12 and slide plate 11 etc., and cylinder assembly can comprise one or more cylinder 8.Wherein, bent axle 6 runs through cylinder assembly and is enclosed within outside rotor 5 on bent axle 6, bent axle 6 be fixedly connected with rotor 5 with rotor 5 synchronous rotary.Upper bearing (metal) 7 and lower bearing 9 are located at the two ends up and down of cylinder assembly respectively, upper bearing (metal) 7 and/or lower bearing 9 are provided with the exhaust port (scheming not shown) being communicated with cylinder interior space, and bent axle 6 coordinates to be located at rotationally in housing A with upper bearing (metal) 7 and lower bearing 9 respectively.Be located in cylinder 8 to piston 12 eccentric rotary, bent axle 6 is connected with piston 12 with driven plunger 12 eccentric rotary, and bent axle 6 drive piston 12 rotate and compression cylinder 8 in refrigerant.Rotary compressor 100 also provides refrigerant to be compressed by liquid-storage container 14, and liquid-storage container 14 is connected with cylinder 8.Cylinder interior space is divided into hyperbaric chamber and low-pressure cavity by slide plate 11, compression refrigerant in piston 12 rotation process, and the pressure in hyperbaric chamber is raised, and when pressure is increased to the pressure outside slightly larger than compressing mechanism C, namely pressurized gas refrigerant discharges by exhaust port.
Wherein, piston 12 is provided with center hole 120, the eccentric part 62 that bent axle 6 comprises main shaft part 61 and is formed in main shaft part 61, and the eccentric part 62 of bent axle 6 coordinates with the center hole 120 of piston 12.Crankshaft eccentric portion 62 is formed as round column structure usually, and the central axis L2 in crankshaft eccentric portion 62 is parallel to the central axis L1 of main shaft part 61, and the perpendicular distance of L1 and L2 is the eccentric amount e of bent axle 6.Wherein, the central axis L1 of main shaft part 61 is also the spin axis of bent axle 6.In some instances, main shaft part 61 is also provided with center oil through 60, center oil through 60 is located on the central axis L1 of main shaft part 61 usually, the through in the axial direction main shaft part 61 of center oil through 60.
Be eccentric system due to bent axle 6 and by the piston 12 of bent axle 6 driven rotary, larger vibration can be caused during rotation, therefore in the design, usually also need at the two ends of rotor 5 configuration equilibrium block 13 to offset mass eccentricity.
According to the bent axle 6 of the utility model embodiment, as shown in Figures 2 and 3, eccentric part 62 is formed with trimming portion 66, the upper-end surface S1 of the through eccentric part 62 in trimming portion 66, or the lower end surface S2 of the through eccentric part 62 in trimming portion 66, or the upper-end surface S1 of the through eccentric part 62 in trimming portion 66 and lower end surface S2.That is, the setting in trimming portion 66 is equivalent to cut out a part of material along outside in crankshaft eccentric portion disclosed in prior art, the outer circumferential face S3 of the through eccentric part 62 in trimming portion 66.
By arranging trimming portion 66 on eccentric part 62, the weight of the eccentric part 62 of bent axle 6 is alleviated greatly, thus the rotating eccentricity inertial force of the rotary compressor 100 using this bent axle 6 can be reduced, reach the object reducing vibration of compressor, noise, improve the reliability of compressor long time running.And the minimizing of rotating eccentricity inertial force, the weight can being convenient to reduce compressor inner equilibrium block 13 even avoids balance block 13, thus reducing Compressor Manufacturing cost, air resistance when simultaneously can reduce to operate suffered by equilibrium block 13, reaches the object improving compressor efficiency.
According to the bent axle 6 of the utility model embodiment, by arranging trimming portion 66 on eccentric part 62, thus keeping under the prerequisite that the eccentric amount e of bent axle 6 is constant, alleviate the eccentric mass of bent axle 6, shorten the distance of the deviation of gravity center rotating center axis of bent axle 6, thus reduce the rotating eccentricity inertial force of the rotary compressor 100 using this bent axle 6, reduce vibration and the noise of compressor, improve the reliability of compressor long time running.And the minimizing of rotating eccentricity inertial force, the weight can being convenient to alleviate compressor inner equilibrium block 13 even avoids balance block 13, thus reducing Compressor Manufacturing cost, air resistance when simultaneously can reduce to operate suffered by equilibrium block 13, improves the efficiency of compressor.
Particularly, as shown in Figures 2 and 3, trimming portion 66 is positioned at the side of the central axis L2 towards eccentric part 62 of the first longitudinal plane P1P2, and here, the first longitudinal plane P1P2 is central axis L1 by main shaft part 61 and is orthogonal to the plane of main shaft part 61 and the line of centres of eccentric part 62.Wherein, as shown in Figure 3, on arbitrary cross section of bent axle 6, the central point of main shaft part 61 is O1, and the central point of eccentric part 62 is O2, and the first longitudinal plane P1P2 is perpendicular to O1O2 line.
The side of the central axis L2 towards eccentric part 62 of the first longitudinal plane P1P2 is positioned at due to trimming portion 66, the center of gravity of eccentric part 62 moves towards the O1 side, center of main shaft part 61 as much as possible by by original deflection O2 side, thus obviously shorten the distance of the deviation of gravity center rotating center axis of bent axle 6, the further rotating eccentricity inertial force reducing the rotary compressor 100 using this bent axle 6, reduce vibration and the noise of compressor, conveniently alleviate the weight of compressor inner equilibrium block 13.
Particularly, as shown in Figure 3, trimming portion 66 is symmetrical about the second longitudinal plane P3P4 by the central axis L1 of the main shaft part 61 and central axis L2 of eccentric part 62, and wherein, the second longitudinal plane P3P4 is perpendicular to the first longitudinal plane P1P2.Thus, the center of gravity of eccentric part 62 can be made to be positioned on the second longitudinal plane P3P4.It should be noted that, for determining the weight and the mounting point that need the equilibrium block 13 installed, computational analysis is needed to go out center of mass's point of bent axle 6, therefore the center of gravity of eccentric part 62 is located on the second longitudinal plane P3P4, the amount of calculation of bent axle 6 center of mass's point can be reduced, be convenient to the whole machine balancing analysis of compressor eccentric system.
Below with reference to Fig. 2-Fig. 7, multiple specific embodiment is described, so that understand the concrete structure of the bent axle 6 of the utility model embodiment in detail.Wherein, in different embodiments, identical label shows identical parts or has the parts of identical function.
Embodiment one
This embodiment as shown in Figures 2 and 3, the upper-end surface S1 of the through eccentric part 62 in trimming portion 66 and lower end surface S2.
Advantageously, the tangent plane that trimming portion 66 is formed on eccentric part 62 is parallel to the central axis L1 of main shaft part 61.That is, trimming portion 66 is formed by the plane of the central axis L1 being parallel to main shaft part 61 is tangent on eccentric part 62, and the cross section in trimming portion 66 is arc.Thus, trimming portion 66 processes more convenient, and the cost of production of bent axle 6 is lower, and the eccentric mass of eccentric part 62 can significantly reduce.Wherein, the cross section in trimming portion 66 refers to the cross section profile that the plane perpendicular to the central axis L1 of main shaft part 61 is formed in trimming portion 66.
Certainly, the utility model is embodiment be not limited thereto, and the tangent plane that trimming portion 66 is formed on eccentric part 62 also can have certain angle with the central axis L1 of main shaft part 61, and even trimming portion 66 is fan-shaped or other are irregularly shaped.
In embodiment one, the volume in trimming portion 66 and the ratio of eccentric part 62 volume are more than or equal to 8%.Wherein, the volume of eccentric part 62 refer to upper-end surface S1, the lower end surface S2 of eccentric part 62 and the outer circumferential face S3 of eccentric part 62 enclose the volume of part, namely the setting in trimming portion 66 is equivalent to cut out a part of material in crankshaft eccentric portion disclosed in prior art, and the volume of cutouts is at least and digs 8% of pre-eccentric portion volume.
Embodiment two
In this embodiment, as shown in Figure 4 and Figure 5, the structure of bent axle 6 is substantially identical with bent axle 6 structure in enforcement one, and this repeats no more.
Difference is, in embodiment two, eccentric part 62 is also provided with loss of weight equalizing orifice 63, and thus, the eccentric mass of eccentric part 62 can significantly reduce.
Particularly, loss of weight equalizing orifice 63 is the through hole of up/down perforation eccentric part 62, and thus, the processing of loss of weight equalizing orifice 63 is more convenient, and the cost of production of bent axle 6 is lower.In embodiment one, the shape of the cross section of loss of weight equalizing orifice 63 and sectional area size axially remain unchanged along bent axle 6, can ensure that bent axle 6 manufacturing process is relatively simple like this.
More specifically, as shown in Figure 5, loss of weight equalizing orifice 63 comprises: center lightening hole 631, and center lightening hole 631 is symmetrical about the second longitudinal plane P3P4.In embodiment one, center lightening hole 631 opens wide towards trimming portion 66, and thus, the eccentric mass of eccentric part 62 can reduce further.The cross section of center lightening hole 631 is substantially trapezoidal.Certainly, the shape of cross section of center lightening hole 631 also can be circle, crescent shape or fan-shaped etc., and the cross section of center lightening hole 631 also can be other shapes.
In certain embodiment one, along on the central axis L1 direction of main shaft part 61, each shape of cross section, the sectional area of center lightening hole 631 can be identical, each shape of cross section, the sectional area of center lightening hole 631 also can be different, as long as can necessarily regulate eccentric part 62 rigidity in the axial direction, simultaneously can take into account bent axle 6 loss of weight and Deformation control requires, not do concrete restriction here.Such as, the sectional area of the cross section of center lightening hole 631 first diminishes from top to bottom, rear change is large, the sectional area of the cross section of center lightening hole 631 also can first become greatly from top to bottom, after diminish.Again such as, the sectional area of the cross section of center lightening hole 631 diminishes from top to bottom gradually, or the sectional area of the cross section of center lightening hole 631 becomes large from top to bottom gradually.More each shape of cross section of center lightening hole 631, size are by irregular mode change.
In embodiment two, trimming portion 66 is more than or equal to 8% with the volume sum of loss of weight equalizing orifice 63 and the ratio of eccentric part 62 volume.Wherein, the volume of eccentric part 62 refer to upper-end surface S1, the lower end surface S2 of eccentric part 62 and the outer circumferential face S3 of eccentric part 62 enclose the volume of part, namely the setting of trimming portion 66, loss of weight equalizing orifice 63 is equivalent to cut out a part of material in crankshaft eccentric portion disclosed in prior art, and the volume of cutouts is at least and digs 8% of pre-eccentric portion volume.
Embodiment three
In this embodiment, as shown in Figure 6 and Figure 7, the structure of bent axle 6 is substantially identical with bent axle 6 structure in enforcement one, and this repeats no more.
Difference is, in embodiment three, loss of weight equalizing orifice 63 also comprises: sidepiece lightening hole 632, and sidepiece lightening hole 632 is positioned at the both sides of center lightening hole 631 and symmetrical about the second longitudinal plane P3P4.Thus further reduce the rotating eccentricity inertial force of the rotary compressor 100 using this bent axle 6, reduce vibration and the noise of compressor, conveniently alleviate the weight of compressor inner equilibrium block 13.
Advantageously, one end of each sidepiece lightening hole 632 extends to the first longitudinal plane P1P2, and like this, the cross section sectional area of loss of weight equalizing orifice 63 is comparatively large, and the eccentric mass of eccentric part 62 can significantly reduce.
Particularly, as shown in Figure 7,
Eccentric part 62 comprises: the first arc plate 621, first connecting plate 623, second arc plate 622 and the second connecting plate 624, first end respectively to the first longitudinal plane P1P2 of the first arc plate 621 and the second arc plate 622, first connecting plate 623 and the second connecting plate 624 are between the first arc plate 621 and the second arc plate 622, first connecting plate 623 is connected main shaft part 61 respectively with the first end of the second connecting plate 624, second end of the first arc plate 621 is connected to limit a sidepiece lightening hole 632 with main shaft part 61 with the second end of the first connecting plate 623, second end of the second arc plate 622 is connected to limit another sidepiece lightening hole 632 with main shaft part 61 with the second end of the second connecting plate 624, first connecting plate 623, center lightening hole 631 is limited between second connecting plate 624 and main shaft part 61.Thus,
Wherein, the shape of cross section of sidepiece lightening hole 632 also can be circle, crescent shape or fan-shaped etc., and the cross section of center lightening hole 631 also can be other shapes.
In certain embodiment three, along on the central axis L1 direction of main shaft part 61, each shape of cross section, the sectional area of sidepiece lightening hole 632 can be identical, each shape of cross section, the sectional area of sidepiece lightening hole 632 also can be different, as long as can necessarily regulate eccentric part 62 rigidity in the axial direction, simultaneously can take into account bent axle 6 loss of weight and Deformation control requires, not do concrete restriction here.Such as, the sectional area of the cross section of sidepiece lightening hole 632 first diminishes from top to bottom, rear change is large, the sectional area of the cross section of sidepiece lightening hole 632 also can first become greatly from top to bottom, after diminish.Again such as, the sectional area of the cross section of sidepiece lightening hole 632 diminishes from top to bottom gradually, or the sectional area of the cross section of sidepiece lightening hole 632 becomes large from top to bottom gradually.More each shape of cross section of sidepiece lightening hole 632, size are by irregular mode change.
Certainly, in embodiment three, on bent axle 6, eccentric part 63 also can be provided with other structures, such as, deep floor (scheming not shown) can be provided with in center lightening hole 631 or sidepiece lightening hole 632, the setting of deep floor, can avoid that eccentric part 62 Stiffness amplitude in the process of loss of weight is excessive causes the situations such as fracture.
It should be noted that, if the eccentric part 62 Stiffness amplitude of bent axle 6 is excessive, so under compressor operation operating mode, to moderate finite deformation be there is in eccentric part 62 under the effect of suction and discharge pressure reduction gas force, thus the gap be nested between the rolling piston 12 of eccentric part 62 periphery and cylinder 8 is increased, cause cold media air to leak and compressor efficiency is reduced.By arranging the deep floor structure shown in the utility model embodiment two, under the prerequisite can be out of shape when effectively suppressing the eccentric part 62 of bent axle 6 to operate, reduce the quality of eccentric part 62.Certainly, the quantity that deep floor is arranged and size, need Rational choice under the requirement of the rigidity and quality of taking into account eccentric part 62.
In addition, bent axle 6 also can be provided with horizontal baffle (scheming not shown), and horizontal baffle is orthogonal to the central axis L1 of main shaft part 61 and is arranged in center lightening hole 631 or sidepiece lightening hole 632.Be provided with the rigidity being beneficial to and improving bent axle 6 eccentric part 62 like this, avoid eccentric part 62 to be out of shape under the effect of pressurized gas power and excessively cause Leakage Gas, thus avoid reducing compressor efficiency.
Horizontal baffle also can be provided with the oilhole of through horizontal baffle, thus be convenient to the lubrication of bent axle 6, reduce the frictional loss between bent axle 6 and piston 12.
According to the rotary compressor 100 of the utility model embodiment, comprise the bent axle 6 according to the utility model above-described embodiment.Wherein, bent axle 6 can be provided with single eccentric part 62, bent axle 6 also can be provided with multiple eccentric part 62.
Particularly, in certain embodiments, rotary compressor 100 is single stage compressor, single stage compressor comprises: crankshaft and piston 12, bent axle is the bent axle 6 according to the utility model above-described embodiment, the single eccentric part 62 that bent axle 6 comprises main shaft part 61 and is formed in main shaft part 61, eccentric part 62 is engaged in the center hole 120 of piston 12.
Owing to being provided with above-mentioned bent axle 6, namely on eccentric part 62, trimming portion 66 is provided with, the rotating eccentricity inertial force of rotary compressor 100 can be reduced, be convenient to the weight reducing equilibrium block 13, reduce vibration of compressor and noise simultaneously, improve the reliability of compressor long time running, also can effectively prevent the coolant leakage in exhaust port and the degradation problem that causes.
In further embodiments, rotary compressor 100 is multistage compressor, and multistage compressor comprises: bent axle and multiple piston 12.Wherein, bent axle is the bent axle 6 according to the utility model above-described embodiment, multiple eccentric parts 62 that bent axle 6 comprises main shaft part 61 and is formed in main shaft part 61, and multiple eccentric part 62 is engaged in the center hole 120 of multiple piston 12 correspondingly.In multiple eccentric part 62, at least one eccentric part 62 is provided with trimming portion 66, thus, the rotating eccentricity inertial force of multistage compressor can be reduced, be convenient to the weight reducing equilibrium block 13, reduce vibration of compressor and noise simultaneously, improve the reliability of compressor long time running, also can effectively prevent coolant leakage in exhaust port and the hydraulic performance decline that causes.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " 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 utility model 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 described embodiment of the present utility model, 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 utility model and aim, scope of the present utility model is by claim and equivalents thereof.

Claims (11)

1. a bent axle, described bent axle is used for rotary compressor, it is characterized in that, described bent axle comprises main shaft part and is formed in the eccentric part in described main shaft part, described eccentric part is formed with trimming portion, the upper-end surface of the through described eccentric part in described trimming portion and/or the lower end surface of through described eccentric part.
2. bent axle according to claim 1, is characterized in that, the upper-end surface of the through described eccentric part in described trimming portion and lower end surface.
3. bent axle according to claim 1, it is characterized in that, described trimming portion is positioned at the side of the central axis towards described eccentric part of the first longitudinal plane, and described first longitudinal plane is central axis by described main shaft part and is orthogonal to the plane of the line of centres of described main shaft part and described eccentric part.
4. bent axle according to claim 3, is characterized in that, described trimming portion is about symmetrical by the second longitudinal plane of the central axis of described main shaft part and the central axis of described eccentric part.
5. bent axle according to claim 1, is characterized in that, described eccentric part is also provided with loss of weight equalizing orifice.
6. bent axle according to claim 5, is characterized in that, described loss of weight equalizing orifice comprises: center lightening hole, and described center lightening hole is about symmetrical by the second longitudinal plane of the central axis of described main shaft part and the central axis of described eccentric part.
7. bent axle according to claim 6, is characterized in that, described center lightening hole opens wide towards described trimming portion.
8. bent axle according to claim 7, is characterized in that, described loss of weight equalizing orifice comprises: sidepiece lightening hole, and described sidepiece lightening hole is positioned at the both sides of described center lightening hole and symmetrical about described second longitudinal plane.
9. bent axle according to claim 8, it is characterized in that, described eccentric part comprises: the first arc plate, first connecting plate, second arc plate and the second connecting plate, first end respectively to the first longitudinal plane of described first arc plate and described second arc plate, described first connecting plate and described second connecting plate are between described first arc plate and described second arc plate, described first connecting plate is connected described main shaft part respectively with the first end of described second connecting plate, second end of described first arc plate is connected to limit a described sidepiece lightening hole with described main shaft part with the second end of described first connecting plate, second end of described second arc plate is connected to limit sidepiece lightening hole described in another with described main shaft part with the second end of described second connecting plate, described first connecting plate, described center lightening hole is limited between second connecting plate and described main shaft part, described first longitudinal plane is central axis by described main shaft part and is orthogonal to the plane of the line of centres of described main shaft part and described eccentric part.
10. bent axle according to claim 2, is characterized in that, the tangent plane that described trimming portion is formed on described eccentric part is parallel to the central axis of described main shaft part.
11. 1 kinds of rotary compressors, is characterized in that, comprise the bent axle according to any one of claim 1-10.
CN201520480275.XU 2015-07-02 2015-07-02 Rotary compressor and bent axle thereof Expired - Fee Related CN204900259U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520480275.XU CN204900259U (en) 2015-07-02 2015-07-02 Rotary compressor and bent axle thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520480275.XU CN204900259U (en) 2015-07-02 2015-07-02 Rotary compressor and bent axle thereof

Publications (1)

Publication Number Publication Date
CN204900259U true CN204900259U (en) 2015-12-23

Family

ID=54922440

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520480275.XU Expired - Fee Related CN204900259U (en) 2015-07-02 2015-07-02 Rotary compressor and bent axle thereof

Country Status (1)

Country Link
CN (1) CN204900259U (en)

Similar Documents

Publication Publication Date Title
CN104963868A (en) Rotary compressor and crankshaft thereof
US8801397B2 (en) Compressor
JP2013096280A (en) Rotary compressor
CN103375385A (en) Hermetic reciprocating compressor
WO2015087754A1 (en) Compressor
JP5781019B2 (en) Rotary compressor
CN205036580U (en) Multi -cylinder rotary compressor
CN204729305U (en) The piston of rotary compressor and there is its rotary compressor, multistage compressor
CN105201845A (en) Rotary compressor
CN204783677U (en) Rotary compressor and bent axle thereof
CN204783676U (en) Rotary compressor and bent axle thereof
CN204900259U (en) Rotary compressor and bent axle thereof
CN205089614U (en) Rotary compressor
CN205135998U (en) Multi -cylinder rotary compressor and refrigerating system who has it
CN105003526A (en) Rotary compressor and crankshaft thereof
CN105114315A (en) Multi-cylinder rotating type compressor
CN204061094U (en) Duplex cylinder compressor and the air-conditioning with it
US9394904B2 (en) Compressor
CN203796562U (en) Rotating piston type compressor
CN104929940A (en) Piston of rotary compressor and rotary compressor with same and multistage compressor with same
CN104963867A (en) Rotary compressor and crankshaft thereof
CN203717352U (en) Compressing pump body of rotary compressor
JP2016160911A (en) Compressor
KR20100081810A (en) Rotary compressor
CN205172951U (en) A motor element and rotary compressor for compressor

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151223

Termination date: 20200702