CN205089614U - Rotary compressor - Google Patents

Abstract

The utility model discloses a rotary compressor, include: casing, driving motor, compressing mechanism and supporting assembly, driving motor establish in the casing and including the stator with rotationally establish the rotor in the stator, the compressing mechanism is established in the casing and including compressing assembly and bent axle, compressing assembly fixes on the casing and at least including cylinder components, supporting assembly establishes in the casing and lies in one side of keeping away from compressing assembly of driving motor, supporting assembly fixes on the casing just and to coordinate with the end bearing of wearing out the rotor of bent axle, rotary compressor constructs: 10cm2 <= QD <= 22cm2, wherein, Q is rotary compressor's discharge capacity, and D is the diameter of axle that is located the main shaft section on one side of cylinder components's the neighbouring driving motor of bent axle. According to the utility model discloses a rotary compressor has not only improved the assembly precision, has reduced rotor and the collision of stator internal diameter and bent axle and compressing assembly's wearing and tearing moreover to the performance and the reliability of compressor have been improved.

Description

Rotary compressor

Technical field

The utility model relates to compressor field, especially relates to a kind of rotary compressor.

Background technique

Along with the development of Compressor Technology, the raising that high efficiency requires, rotary compressor motor height progressively strengthens, and motor speed is more and more higher, and bent axle diameter is more and more less, and slenderness ratio is increasing, and worse and worse, the ability of resistance to deformation also reduces bent axle rigidity gradually.Thing followed problem is, due to the effect of the uneven electromagnet pull of machine air gap, the moment bent axle generation resiliently deformable that compressor starts, causes rotor and diameter of stator bore to collide.Meanwhile, the increase of motor speed makes rotor running centrifugal action strengthen, and Rotor terminal and diameter of stator bore are often swiped, collided, and the swing of bent axle can increase the abrasion between bent axle and compression assembly, compressor noise is finally made to increase, hydraulic performance decline, less reliable.

In addition, compressor industry generally adopts directly that the mode be weldingly fixed on housing fixes compression member by compression assembly, to form electric machine rotor gap, but because assembling conjunction size is more, often dimensional interference occurs between each part or between part and frock clamping in assembly process, again because the impact of welding stress, the electric machine rotor gap after having welded often changes, cause machine air gap amount of unbalance to worsen, compressor performance reduces.

Model utility content

The utility model is intended at least to solve one of technical problem existed in prior art.For this reason, the utility model is to propose a kind of rotary compressor, and described rotary compressor has the advantage that reliability is high, assembly precision is high.

According to the rotary compressor of the utility model embodiment, comprising: housing; Drive motor, described drive motor to be located in described housing and to comprise stators and rotators, and described stator is fixing on the housing, and described rotor is located in described stator rotationally; Compressing mechanism, described compressing mechanism to be located in described housing and to comprise compression assembly and bent axle, described compression assembly is fixed on the housing and is positioned at the axial side of described drive motor, described rotor is passed towards the direction away from described compression assembly after one end of described bent axle and described rotor are fixedly linked, the other end of described bent axle coordinates with the compression member of described compression assembly and is connected, and described compression member at least comprises cylinder assembly; Bearing assembly, described bearing assembly to be located in described housing and to be positioned at the side away from described compression assembly of described drive motor, described bearing assembly fix on the housing and with the described one end bearing engagement passing described rotor of described bent axle, described rotary compressor is configured to: 10cm ²≤ Q/D≤22cm ², wherein, Q is the discharge capacity of described rotary compressor, and D is the diameter of axle being positioned at the main shaft section of the contiguous drive motor side of described cylinder assembly of described bent axle.

According to the rotary compressor of the utility model embodiment, compression assembly be fixed on housing by adopting and adopt bearing assembly to be fixed on housing, achieving the dual-gripper to compression assembly, bent axle and rotor, compressing mechanism is caused 10cm simultaneously ²≤ Q/D≤22cm ²to ensure the rigid requirements of bent axle, not only increase the assembly precision of rotary compressor, ensure that the air gap between the stator of drive motor and rotor is even, reduce the swing of compressor bent axle in the possibility starting moment bent axle generation resiliently deformable and compressor operating process, thus reduce the collision of rotor and diameter of stator bore and the abrasion of bent axle and compression assembly, and then improve performance and the reliability of compressor.

According to embodiments more of the present utility model, described D meets further: 10≤M/D≤16.5, and wherein, M is the axial length of described main shaft section.

According to embodiments more of the present utility model, described bent axle is formed with the center oilhole axially run through along it, the aperture d be positioned in described main shaft section of described center oilhole meets: 0.2≤d/D≤0.6.

According to embodiments more of the present utility model, described bearing assembly comprises: fixing the first support on the housing and the auxiliary bearing be fixed on described first support, described auxiliary bearing coordinates with described crankshaft support, described auxiliary bearing comprises: joint, described joint be fixed on described first support away from a side end face of described drive motor; And support, described support be connected with described joint and towards described drive motor direction through on the described one end being set in described bent axle after described first support to support described bent axle.

In embodiments more of the present utility model, the axial length L away from described compression assembly side being positioned at described stator of described bent axle and described bent axle meet relation with the axial length A of described support bearing engagement: 0≤L≤2A.

In embodiments more of the present utility model, described support has the matching hole section coordinated with described crankshaft support, the end of described one end of described bent axle has guiding shaft part, and described guiding shaft part passes the side away from described drive motor in described matching hole section.

Further, the minimum range S between described guiding shaft part and described matching hole section meets: 0≤S≤15mm.

In embodiments more of the present utility model, described auxiliary bearing be rolling bearing or sliding bearing or described auxiliary bearing and described bent axle bearing engagement face between be provided with sliding bearing sleeve.

In embodiments more of the present utility model, described compression assembly comprises fixing the second support on the housing, and described compression member is fixed on described second support.

Further, described compression member be fixed on described second support away from a side end face of described drive motor.

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.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the structure of rotary compressor according to the utility model embodiment;

Fig. 2 is the part-structure schematic diagram of the compressor shown in Fig. 1, illustrated therein is dimension D and discharge capacity Q;

Fig. 3 is the part-structure schematic diagram of the compressor shown in Fig. 1, illustrated therein is dimension D and M;

Fig. 4 is the part-structure schematic diagram of the compressor shown in Fig. 1, illustrated therein is size S;

Fig. 5 is the part-structure schematic diagram of the compressor shown in Fig. 1, illustrated therein is dimension D and d;

Fig. 6 is the not seal structure schematic diagram of the compressor shown in Fig. 1, illustrated therein is size L and A.

Reference character:

Compressor 100,

Housing 1, middle shell 1a, upper shell 1b, lower shell body 1c, exhaust manifolds 11,

Drive motor 2, stator 21, rotor 22,

Compressing mechanism 3,

Compression assembly 31,

Compression member 311, cylinder 3111, main bearing 3112, supplementary bearing 3113, equilibrium block 3114,

Piston 3115,

Second support 312,

Bent axle 32, center oilhole 321, guiding shaft part 322,

Bearing assembly 4,

First support 41,

Auxiliary bearing 42, joint 421, support 422, matching hole section 4221,

Liquid-storage container 5.

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.

Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the utility model.In addition, the utility model can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.

The rotary compressor 100 according to the utility model embodiment is described in detail below with reference to Fig. 1-Fig. 6.Wherein, rotary compressor 100 can be vertical compressor or horizontal compressor, only be described for vertical compressor for rotary compressor 100 below, after technological scheme below those skilled in the art have read, be obviously appreciated that rotary compressor 100 is the technological scheme of horizontal compressor.

As shown in figs 1 to 6, according to the rotary compressor 100 of the utility model embodiment: comprising: housing 1, drive motor 2, compressing mechanism 3 and bearing assembly 4.As shown in Figure 1, housing 1 can comprise middle shell 1a, upper shell 1b and lower shell body 1c, middle shell 1a can be formed as the tubular of upper and lower both ends open, and upper shell 1b and lower shell body 1c is located at the two ends up and down of middle shell 1a respectively jointly to limit airtight receiving cavity with middle shell 1a.

Specifically, as shown in Figure 1, drive motor 2 to be located in housing 1 and to comprise stator 21 and rotor 22, stator 21 is fixed on housing 1, such as stator can be fixed on middle shell 1a, rotor 22 is located in stator 21 rotationally, compressing mechanism 3 to be located in housing 1 and to comprise compression assembly 31 and bent axle 32, compression assembly 31 is fixed on housing 1 (the middle shell 1a such as shown in Fig. 1) and goes up and the axial side (downside as shown in Figure 1) being positioned at drive motor 2, rotor 22 is passed towards the direction away from compression assembly 31 after one end (upper end of bent axle 32 as shown in Figure 1) of bent axle 32 and rotor 22 are fixedly linked, the other end (lower end of bent axle 32 as shown in Figure 1) of bent axle 32 coordinates with the compression member 311 of compression assembly 31 and is connected, compression member 311 at least comprises cylinder assembly, such as cylinder assembly can comprise the cylinder 3111 shown in Fig. 1.

Thus, because compression assembly 31 is fixed on housing 1, thus lower support structure is constituted to compressing mechanism 3, effective supporting effect is defined to compression assembly 31, bent axle 32 and rotor 22 etc., assembly precision can be improved, bent axle 32 is avoided to swing in compressor 100 running and the abrasion increased between bent axle 32 and compression assembly 31, and can prevent bent axle 32 from the moment that compressor 100 starts, resiliently deformable occurring and causing rotor 22 and the internal diameter of stator 21 to collide, thus reduce the noise of compressor 100, improve performance and the reliability of compressor 100.

As shown in Figure 1, bearing assembly 4 to be located in housing 1 and to be positioned at the side away from compression assembly 31 (upside of drive motor 2 as shown in Figure 1) of drive motor 2, bearing assembly 4 is fixed on housing 1, such as be fixed on middle shell 1a, and with one end (upper end of the bent axle 32 as shown in Figure 1) bearing engagement passing rotor 22 of bent axle 32.Thus, bearing assembly 4 pairs of bent axles 32 and rotor 22 constitute upper support structure, achieve the further support to compression assembly 31, bent axle 32 and rotor 22, further increase assembly precision, prevent bent axle 32 from resiliently deformable occurring in the start-up course of compressor 100 and swings in the running of compressor 100, thus the collision of rotor 22 with the internal diameter of stator 21 and the abrasion of bent axle 32 and compression assembly 31 can be avoided, and then further increase performance and the reliability of compressor 100.

Wherein, rotary compressor 100 is configured to: 10cm ²≤ Q/D≤22cm ², wherein, Q is the discharge capacity of rotary compressor 100, and D is the diameter of axle being positioned at the main shaft section of contiguous drive motor 2 side of cylinder assembly of bent axle 32.It should be noted that, in the example of fig. 1, the main shaft section of bent axle 32 refers to: the shaft part be positioned on the upside of cylinder assembly of bent axle 32, is namely positioned at the part of more than cylinder 3111 upper surface.The rigid requirements of compressor 100 bent axle 32 and the Capability Requirement of resistance to deformation can be ensured thus, prevent drive motor 2 in the process of rotating due to the effect of the uneven electromagnet pull in drive motor 2 gap and cause bent axle 32 that resiliently deformable occurs, thus can avoid causing rotor 22 mutually to collide with the internal diameter of stator 21, and then improve performance and the reliability of compressor 100.

It should be noted that, when the assembly precision of compressor 100 is lower, air gap between the stator 21 of drive motor 2 and rotor 22 can be uneven, the wearing and tearing between compression assembly 31 and bent axle 32 can be made to strengthen, and moment of torsion power consumption when bent axle 32 is rotated increase and machine air gap amount of unbalance increases.When the rigidity of bent axle 32 and the ability of resistance to deformation low time, due to the effect of the uneven electromagnet pull in drive motor 2 gap, can there is resiliently deformable in the moment that compressor 100 starts in bent axle 32, thus cause rotor 22 and stator 21 internal diameter to collide.

According to the rotary compressor 100 of the utility model embodiment, compression assembly 31 is fixed on housing 1 by adopting and adopts bearing assembly 4 to be fixed on housing 1, achieve the dual-gripper to compression assembly 31, bent axle 32 and rotor 22, compressor 100 is configured to 10cm simultaneously ²≤ Q/D≤22cm ²to ensure the rigid requirements of bent axle 32, not only increase the assembly precision of rotary compressor 100, ensure that the air gap between the stator 21 of drive motor 2 and rotor 22 is even, reducing compressor 100 starting moment bent axle 32 there is the swing of bent axle 32 in the possibility of resiliently deformable and compressor 100 running, thus reduce the collision of rotor 22 with stator 21 internal diameter and the abrasion of bent axle 32 and compression assembly 31, and then improve performance and the reliability of compressor 100.

In embodiments more of the present utility model, meet further with reference to Fig. 3, D: 10≤M/D≤16.5, wherein, M is the axial length of main shaft section, the length namely between the upper-end surface at bent axle 32 of bent axle 32 as shown in Figure 3 and the upper-end surface of cylinder 3111.Can ensure that the slenderness ratio of bent axle 32 is in a suitable scope thus, when M/D is greater than 16.5, the slenderness ratio of bent axle 32 becomes large, the rigidity of bent axle 32 is deteriorated, the ability of bent axle 32 resistance to deformation also can reduce, when M/D is less than 10, the slenderness ratio of bent axle 32 can diminish, namely the diameter of bent axle 32 can become large or/and the length of bent axle 32 can shorten, the volume of the inner space of compressor 100 will be reduced thus when the diameter of bent axle 32 becomes large, the height of compressor 100 will be reduced when the straight length of bent axle 32 shortens, thus reduce performance and the reliability of compressor 100.

Alternatively, with reference to Fig. 5, bent axle 32 is formed with the center oilhole 321 axially run through along it, the aperture d be positioned in main shaft section of center oilhole 321 meets: 0.2≤d/D≤0.6.Center oilhole 321 not only can be prevented thus excessive and cause the rigidity variation of bent axle 32 and the ability of resistance to deformation to decline, but also the center oilhole 321 on bent axle 32 can be prevented too small and cause oil circuit to block.

In embodiments more of the present utility model, with reference to Fig. 2, bearing assembly 4 comprises: the first support 41 and auxiliary bearing 42, first support 41 is fixed on housing 1, such as be fixed on middle shell 1a, auxiliary bearing 42 is fixed on the first support 41, auxiliary bearing 42 and bent axle 32 bearing engagement are to support bent axle 32, auxiliary bearing 42 comprises: joint 421 and support 422, joint 421 is fixed on the side end face away from drive motor 2 (upper-end surface of the first support 41 as shown in Figure 1) of the first support 41, support 422 be connected with joint 421 and towards drive motor 2 direction through on the one end (upper end of bent axle 32 as shown in Figure 1) being set in bent axle 32 after the first support 41 with supporting crankshaft 32.The upper end of bent axle 32 can be supported thus by the first support 41 and auxiliary bearing 42, improve assembly precision, prevent from starting moment at compressor 100, there is resiliently deformable and cause rotor 22 and the internal diameter of stator 21 to collide in bent axle 32, and the abrasion preventing bent axle 32 in compressor 100 running from occurring to swing and increase between bent axle 32 and compression assembly 31, thus improve performance and the reliability of compressor 100.

Alternatively, with reference to Fig. 6, the supporting with support 422 the axial length A coordinated and meet relation of the axial length L away from compression assembly 31 side being positioned at stator 21 of bent axle 32 and bent axle 32: 0≤L≤2A.In other words, the supporting with support 422 the axial length A coordinated and meet relation of the length L of the upside (upside as shown in Figure 6) being positioned at stator 21 of bent axle 32 and bent axle 32: A >=L/2 >=0, can ensure that the length that bent axle 32 coordinates with support 422 is greater than the half that bent axle 32 stretches out the length on the upside of drive motor 2 stator 21 thus, thus improve the support effects of bearing assembly 4 pairs of bent axles 32, bent axle 32 can more steadily be rotated effectively.

In embodiments more of the present utility model, with reference to Fig. 4, support 422 has the matching hole section 4221 with bent axle 32 bearing engagement, the end of one end of bent axle 32 has guiding shaft part 322, guiding shaft part 322 passes the side away from drive motor 2 (upside of matching hole section 4221 as shown in Figure 1) in matching hole section 4221, that is, the lower end surface of guiding shaft part 322 is positioned at the top of the upper-end surface of matching hole section 4221 or concordant with the upper-end surface of matching hole section 4221, namely the minimum range S led between shaft part 322 and matching hole section 4221 meets: S >=0.

It should be noted that, matching hole section 4221 refers to one section that support 422 coordinates with the outer diameter contact of bent axle 32, and guiding shaft part 322 refers to one section bent axle 32 upper end portion with guiding surface.Not only can ensure that bent axle 32 passes through stator 21 and penetrates in support 422 thus, the part avoiding guiding shaft part 322 to be connected with main shaft section causes stress to concentrate to matching hole section 4221, improve functional reliability and the working life of support 422, and can avoid the internal diameter of matching hole section 4221 on support 422 can not completely and the major diameter fit of bent axle 32, prevent bent axle 32 and matching hole section 4221 fiting effect poor or occur that bent axle 32 departs from the situation of support 422, thus ensure that support 422 carries out supporting with bent axle 32 support coordinating to realize support 422 pairs of bent axles 32, prevent from bent axle 32 from starting at compressor 100 resiliently deformable occurs instantaneously and swings in compressor 100 running.

Preferably, with reference to Fig. 4, the minimum range S between guiding shaft part 322 and matching hole section 4221 meets: 0≤S≤15mm.That is.Distance between the lower end surface of guiding shaft part 322 and the upper-end surface of matching hole section 4221 is S and meets 0≤S≤15mm.The guiding shaft part 322 of bent axle 32 can be made thus to stretch out matching hole section 4221 completely, the part that guiding shaft part 322 can be avoided to be connected with main shaft section causes stress to concentrate to matching hole section 4221, improve functional reliability and the working life of support 422, and prevent due to bent axle 32 that to exceed length on the upside of matching hole section 4221 too small and cause bent axle 32 and matching hole section 4221 fiting effect poor or occur that bent axle 32 departs from the situation of support 422 further, thus ensure that matching hole section 4221 is carried out supporting with the bent axle 32 of the downside of guiding shaft part 322 support coordinating to realize support 422 pairs of bent axles 32 and fixed further, prevent from bent axle 32 from starting at compressor 100 resiliently deformable occurs instantaneously and swings in compressor 100 running.

In embodiments more of the present utility model, auxiliary bearing 42 is rolling bearing or sliding bearing, or is provided with sliding bearing sleeve between the bearing engagement face of auxiliary bearing 42 and bent axle 32.The diversity of auxiliary bearing 42 can be increased thus, suitable auxiliary bearing 42 can be selected according to the size requirement of the size of compressor 100 inner space and component.When auxiliary bearing 42 is sliding bearing, the endoporus of auxiliary bearing 42 can fine grinding, also can finish ream processing.

Alternatively, with reference to Fig. 1, compression assembly 31 comprises the second support 312 be fixed on housing 1, and compression member 311 is fixed on the second support 312.That is, compression member 311 is fixed on the second support 312, and by the second support 312 and the fixing of housing 1, compression member 311 is fixed on housing 1 indirectly, thus can simplified structure, avoid the cylinder 3111 in compression member 311, main bearing 3112 and supplementary bearing 3113 and housing 1 to be fixed and cause compression member 311 and deform, and reduce assembling difficulty, reduce the overall dimensions of compression member 311, improve the reliability of compressor 100.

In embodiments more of the present utility model, with reference to Fig. 1, compression member 311 is fixed on the side away from drive motor 2 (downside of the second support 312 as shown in Figure 1) end face of the second support 312.That is, other compression member 311 (as dividing plate) in main bearing 3112, supplementary bearing 3113 or cylinder assembly or compression assembly 31 are fixedly connected on the downside of the second support 312, the structure of compression assembly 31 can be made thus compacter, and reliability is higher.Certainly, the utility model is not limited thereto, compression member 311 can also be fixed on the side (upside of the second support 312 as shown in Figure 1) of the close drive motor 2 of the second support 312, and namely main bearing 3112, supplementary bearing 3113, cylinder assembly etc. are fixed on the upside of the second support 312.

Briefly describe the rotary compressor 100 according to the utility model specific embodiment below with reference to Fig. 1-Fig. 6, following description is exemplary, is intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.

According to the rotary compressor 100 of the utility model embodiment, as shown in Figure 1, rotary compressor 100 comprises: housing 1, drive motor 2, compressing mechanism 3, bearing assembly 4, and wherein compression assembly 31 comprises the second support 312.Housing 1 is seal container, limits receiving cavity in housing 1.Drive motor 2 and compressing mechanism 3 are all located in housing 1, and namely drive motor 2 and compressing mechanism 3 are all located in receiving cavity.In the example depicted in fig. 1, housing 1 comprises middle shell 1a, upper shell 1b and lower shell body 1c, and middle shell 1a is formed as the tubular of upper and lower both ends open, and upper shell 1b and lower shell body 1c is located at the two ends up and down of middle shell 1a respectively.Rotary compressor 100 also comprises exhaust manifolds 11, and exhaust manifolds 11 to be located on housing 1 and to be communicated with receiving cavity, and in the example of fig. 1, exhaust manifolds 11 are connected on upper shell 1b.

As shown in Figure 1, compressing mechanism 3 comprises compression assembly 31 and bent axle 32, drive motor 2 is positioned at the top of compression assembly 31, drive motor 2 comprises stator 21 and coordinates the rotor 22 rotated with stator 21, stator 21 is fixed on middle shell 1a, rotor 22 to be located at rotationally in stator 21 and with bent axle 32 be fixedly linked with bent axle 32 synchronous rotary.

As shown in Figure 1, compression assembly 31 comprises compression member 311 and second supports 312 such as cylinder assembly, supplementary bearing 3113, main bearing 3112, piston 3115 and slide plate, cylinder assembly can comprise one or more cylinder 3111, when cylinder 3111 is multiple, between adjacent two cylinders 3111, be provided with dividing plate.Wherein, main bearing 3112 and supplementary bearing 3113 are located at the two ends up and down of cylinder assembly respectively, main bearing 3112 and/or supplementary bearing 3113 are provided with the exhaust port being communicated with cylinder 3111 inner space, bent axle 32 runs through cylinder assembly and coordinates to be located at rotationally in housing 1 with main bearing 3112 and supplementary bearing 3113 respectively, piston 3115 to be set on the eccentric part on bent axle and to be engaged in the compression chamber of cylinder, thus piston 3115 can be driven in the process of crank rotation to roll along the inner circle wall of compression chamber to compress the refrigerant in compression chamber.

Rotary compressor 100 can also provide refrigerant to be compressed by liquid-storage container 5, and liquid-storage container 5 is connected with cylinder 3111.Cylinder 3111 inner space is divided into hyperbaric chamber and low-pressure cavity by slide plate, compression refrigerant in piston 3115 rotation process, and the pressure in hyperbaric chamber is raised, and when pressure is increased to the pressure outside slightly larger than compressing mechanism 3, namely pressurized gas refrigerant discharges by exhaust port.

Be eccentric system due to bent axle 32 and by the piston 3115 of bent axle 32 driven rotary, during rotation, larger vibration can be caused, therefore in the design, usually also need end face configuration equilibrium block 3114 at rotor 22 to offset mass eccentricity.

With reference to Fig. 1, the periphery wall of the second support 312 is fixed on the inwall of housing 1, other compression member 311 (as dividing plate) in main bearing 3112, supplementary bearing 3113 or cylinder 3111 or compression assembly 31 are fixedly connected on the second support 312, such as, by threaded fastener A, main bearing 3112 and supplementary bearing 3113 can be connected to the axial two ends of cylinder 3111, then by threaded fastener B, cylinder 3111 be fixed on the second support 312.Bearing assembly 4 comprises the first support 41 and the auxiliary bearing 42 of annular, the periphery wall of the first support 41 is fixed on the inwall of housing 1, (such as welding) is fixed on the upper surface of the first support 41 in the top of auxiliary bearing 42, and the top being enclosed within bent axle 32 outside the bottom of auxiliary bearing 42 is to support bent axle 32, auxiliary bearing 42 both can be rolling bearing, also can be sliding bearing.

That is, compression assembly 31 is fixed on housing 1 by the second support 312, thus the second support 312 forms the lower support structure of the assembly parts of compressing mechanism 3 and rotor 22.The upper end that first support 41 and auxiliary bearing 42 are supported on bent axle 32 is fixed on housing 1, thus bearing assembly 4 forms the upper support structure of the assembly parts of compressing mechanism 3 and rotor 22, namely bearing assembly 4 described in the utility model is the upper support structure for supports compressor structure 3 upper end.The assembly parts that the rotor 22 of compressing mechanism 3 and drive motor 2 is formed is connected on the housing 1 of compressor 100 by lower support structure and upper support structure.

According to the rotary compressor 100 of the utility model embodiment, by arranging the first support 41 and the second support 312, with by compression assembly 31, bent axle 32 is connected on housing 1 with the assembly parts of rotor 22 indirectly, improve the assembly precision of rotary compressor 100, ensure that between the stator 21 of drive motor 2 and rotor 22, air gap is even, make main bearing 3112 and the wearing and tearing between supplementary bearing 3113 and bent axle 32 little, noise is little, and moment of torsion when making bent axle 32 rotate is low in energy consumption, drive motor 2 gap amount of unbalance is little, realize drive motor 2 stator 21 to assemble with the small―gap suture of rotor 22, and rotary compressor is simple and reasonable, good reliability.

In addition, as shown in Figure 2, when compressor 100 discharge capacity is Q (cm ³), when the diameter of axle of bent axle 32 is D (cm), optimally, meet 10cm ²≤ Q/D≤22cm ².As shown in Figure 3, bent axle 32 diameter of axle is D (cm), when bent axle 32 main axis length is M (cm), meets 10≤M/D≤16.5.As shown in Figure 4, distance when between bent axle 32 main shaft upper-end surface and auxiliary bearing 42 lower end surface is A1 (mm), bent axle 32 external diameter and auxiliary bearing 42 internal diameter contact jaw length are A (mm), bent axle 32 leads the length of shaft part 322 when being A2 (mm), meet 0≤A1-A-A2≤15 (mm), i.e. 0≤S≤15 (mm), wherein S is the minimum range S between guiding shaft part 322 and matching hole section 4221.As shown in Figure 5, when bent axle 32 major diameter is D, when oilhole diameter is d inside bent axle 32, meet 0.2≤d/D≤0.6.As shown in Figure 6, the distance when the lower end surface of auxiliary bearing 42 and the upper-end surface of bent axle 32 is L (mm), and the length of bent axle 32 external diameter and auxiliary bearing 42 internal diameter surface of contact is A (mm), and compressor 100 meets 0≤L≤2A.

In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise ", " 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, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, the term such as 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 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, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.

In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.

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, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.

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 (10)

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

Housing;

Drive motor, described drive motor to be located in described housing and to comprise stators and rotators, and described stator is fixing on the housing, and described rotor is located in described stator rotationally;

Compressing mechanism, described compressing mechanism to be located in described housing and to comprise compression assembly and bent axle, described compression assembly is fixed on the housing and is positioned at the axial side of described drive motor, described rotor is passed towards the direction away from described compression assembly after one end of described bent axle and described rotor are fixedly linked, the other end of described bent axle coordinates with the compression member of described compression assembly and is connected, and described compression member at least comprises cylinder assembly;

Bearing assembly, described bearing assembly to be located in described housing and to be positioned at the side away from described compression assembly of described drive motor, described bearing assembly fix on the housing and with the described one end bearing engagement passing described rotor of described bent axle,

Described rotary compressor is configured to: 10cm ²≤ Q/D≤22cm ², wherein, Q is the discharge capacity of described rotary compressor, and D is the diameter of axle being positioned at the main shaft section of the contiguous drive motor side of described cylinder assembly of described bent axle.

2. rotary compressor according to claim 1, is characterized in that, described D meets further: 10≤M/D≤16.5, and wherein, M is the axial length of described main shaft section.

3. rotary compressor according to claim 1, is characterized in that, described bent axle is formed with the center oilhole axially run through along it, and the aperture d be positioned in described main shaft section of described center oilhole meets: 0.2≤d/D≤0.6.

4. rotary compressor according to claim 1, it is characterized in that, described bearing assembly comprises: fixing the first support on the housing and the auxiliary bearing be fixed on described first support, and described auxiliary bearing coordinates with described crankshaft support, and described auxiliary bearing comprises:

Joint, described joint be fixed on described first support away from a side end face of described drive motor; With

Support, described support be connected with described joint and towards described drive motor direction through on the described one end being set in described bent axle after described first support to support described bent axle.

5. rotary compressor according to claim 4, it is characterized in that, the axial length L away from described compression assembly side being positioned at described stator of described bent axle and described bent axle meet relation with the axial length A of described support bearing engagement: 0≤L≤2A.

6. rotary compressor according to claim 4, it is characterized in that, described support has the matching hole section coordinated with described crankshaft support, the end of described one end of described bent axle has guiding shaft part, and described guiding shaft part passes the side away from described drive motor in described matching hole section.

7. rotary compressor according to claim 6, is characterized in that, the minimum range S between described guiding shaft part and described matching hole section meets: 0≤S≤15mm.

8. rotary compressor according to claim 4, is characterized in that, described auxiliary bearing be rolling bearing or sliding bearing or described auxiliary bearing and described bent axle bearing engagement face between be provided with sliding bearing sleeve.

9. the rotary compressor according to any one of claim 1-8, is characterized in that, described compression assembly comprises fixing the second support on the housing, and described compression member is fixed on described second support.

10. rotary compressor according to claim 9, is characterized in that, described compression member be fixed on described second support away from a side end face of described drive motor.