CN104937274A

CN104937274A - Rotary compressor

Info

Publication number: CN104937274A
Application number: CN201380071045.1A
Authority: CN
Inventors: 药师寺俊辅
Original assignee: Mitsubishi Heavy Industries Ltd
Current assignee: Mitsubishi Heavy Industries Air Conditioning and Refrigeration Systems Corp
Priority date: 2013-03-12
Filing date: 2013-09-26
Publication date: 2015-09-23
Anticipated expiration: 2033-09-26
Also published as: JP6161923B2; EP2942526A4; WO2014141331A1; EP2942526A1; EP2942526B1; JP2014173554A; CN104937274B

Abstract

A rotary compressor is provided with: an upper bearing (29A) and a lower bearing (29B), which are provided so as to sandwich a rotary compression mechanism; a main shaft (23) which is rotatably supported by both the upper bearing (29A) and the lower bearing (29B) and which penetrates through the rotary compression mechanism; an electric motor (36) which rotationally drives the main shaft (23) about the axis of the main shaft (23); and a muffler (50A) which is affixed to the upper bearing (29A) and into which a refrigerant discharged from the rotary compression mechanism flows. The muffler (50A) has formed thereon a rib (56) which extends along the radial line which connects the affixation point (F) at which the upper bearing (29A) is affixed to a hermetic container (11) and the center of the main shaft (23).

Description

Rotary compressor

Technical field

The present invention relates to a kind of rotary compressor, motor and the rotor of this rotary compressor form as one, and can suppress the vibration of the rotatingshaft in rotating.

Background technique

For the rotary compressor of refrigerating plant, as shown in Figure 6, possess in the inside of seal container 1: the cylinder 2 with cylindrical inner face, and relative to the misalignment of cylinder 2 and the piston rotary 3 established.Piston rotary 3 is arranged on main shaft 4, and this main shaft 4 is central axis along cylinder 2 and establishes.Main shaft 4 is upper bearing 5A and lower bearing 5B by being fixed on cylinder 2, is arranged on freely rotatably on its central axis.Main shaft 4 is fixed with motor 6 and rotor 6A.The side, periphery of rotor 6A, is configured with the stator 6B on the inner peripheral surface being fixed on seal container 1, and by allowing stator 6B be energized, main shaft 4 is driven in rotation together with rotor 6A, and piston rotary 3 rotates in the inside of cylinder 2.

Rotary compressor, sucks refrigeration agent in the pressing chamber be formed between cylinder 2 and piston rotary 3, is reduced the volume in pressing chamber, carry out compressed refrigerant thus by the rotation of piston rotary 3.Rotary compressor, after refrigeration agent being carried out gas-liquid separation by accumulator 8, sucks refrigeration agent and compresses.

Rotary compressor, the rotation along with main shaft 4 can be vibrated, such as this vibration is successively according to the sequence delivery of seal container 1, accumulator 8, will make a noise.Therefore, there has been proposed a lot of various scheme up to now to reduce the vibration of rotary compressor.

Such as, the scheme that patent documentation 1 proposes is arranged between seal container and upper bearing by the supporting member of the foundry goods with effectiveness in vibration suppression, reduces the vibration of transmitting from upper bearing to seal container thus.In addition, the scheme that patent documentation 2,3 proposes alleviates vibration by forming rib on upper bearing.

At first technical paper

Patent documentation

Patent documentation 1: Japanese Patent Laid-Open 6-26478 publication

Patent documentation 2: Japanese Patent Laid-Open 7-133781 publication

Patent documentation 1: Japanese Patent Laid-Open No. Sho 59-182691 publication

Summary of the invention

The problem that invention will solve

As mentioned above, there has been proposed a lot of scheme up to now, but vibrative reason wide range, the problem therefore vibrated can not thoroughly solve.The constituting component of rotary compressor, particularly, improves the rigidity supporting upper bearing and the lower bearing causing the main shaft of the main cause of vibration, to alleviating vibration effectively.But rotary compressor and other devices a lot, machine are the same, need to realize lightweight, and in general the rigidity increasing its constituting component all can increase its weight, therefore be difficult to meet this requirement.

Given this, the present invention is based on above-mentioned problem, and object is to provide a kind of rotary compressor, and the increase by weight is limited in minimum degree, effectively can alleviate vibration again simultaneously.

For solving the method for problem

Rotary compressor of the present invention, is characterized in that, possesses: by provided refrigerant compression and the rotary compression mechanism spued; Be folded with upper bearing and the lower bearing of rotary compression mechanism; Supported freely rotatably respectively by upper bearing and lower bearing, and run through the main shaft of rotary compression mechanism; Main shaft is driven the electric motor of rotation along the surrounding of its central axis; Be fixed on upper bearing, and the refrigeration agent for spuing from rotary compression mechanism flow into inner baffler; And by rotary compression mechanism, upper bearing, lower bearing, main shaft, electric motor and baffler storage seal container therein, wherein, at least one in baffler and upper bearing is provided with intensive aspect, this intensive aspect extends along with lower line segment, and this line segment is the line segment connecting radial direction upper bearing being fixed on the immovable point of seal container and the center of above-mentioned main shaft.

Particular content, by aftermentioned, on upper bearing, will produce the distortion larger than other parts from above-mentioned immovable point towards the field of the alignment of shafts.At least one in baffler and upper bearing of the present invention arranges intensive aspect for this reason, using as the stiffener to the larger field of this distortion, by this way, improve the rigidity to main shaft, alleviate the vibration of main shaft.And it is just enough that the present invention only arranges intensive aspect, therefore the weight increase of compressor can be controlled in inferior limit.

Intensive aspect in the present invention, adds the cross section second moment of baffler, upper bearing, containing the entire infrastructure part in order to improve the rigidity tackling bending and distortion, belonging to typical rib.

Baffler arranges reinforcement rib, reinforcement rib can be integrally formed with baffler, also separately can be formed separately with baffler and strengthen rib, the more independent reinforcement rib formed is fixed on baffler.

When being integrally formed intensive aspect with baffler, the refrigerant flow path that can will pass through from the inner refrigeration agent spued to seal container inside of baffler, namely the 1st refrigerant flow path is formed on intensive aspect.The advantage of this form is, comprises intensive aspect and refrigerant flow path, and utilizing sheet metal to process can be integrally formed baffler.

In addition, when reinforcement rib and baffler separately being formed separately, the refrigerant flow path that can will pass through from the inner refrigeration agent spued to seal container inside of baffler, namely the 2nd refrigerant flow path is formed on baffler, avoids intensive aspect.This form is effective when the shape of required intensive aspect cannot form as one with baffler.

Invention effect

According to the present invention, the field that corresponding distortion is larger, only needs at least one in baffler and upper bearing arranges intensive aspect, so can control in inferior limit by the increase of weight, also can improve the rigidity to main shaft simultaneously, alleviate the vibration of main shaft.

Accompanying drawing explanation

Fig. 1 is the sectional view of the structure of the rotary compressor represented involved by the 1st mode of execution of the present invention.

Fig. 2 represents the longitudinal section near the rotating machinery in the rotary compressor shown in Fig. 1.

Fig. 3 represents the cross-sectional view near the rotating machinery in the rotary compressor shown in Fig. 1.

Fig. 4 represents the rotary compressor involved by the 2nd mode of execution of the present invention, the longitudinal section that the cross-sectional view that (a) is corresponding diagram 3, (b) are corresponding diagram 2.

Fig. 5 represents the rotary compressor involved by the 3rd mode of execution of the present invention, the longitudinal section that the cross-sectional view that (a) is corresponding diagram 3, (b) are corresponding diagram 2.

Fig. 6 is the sectional view of the formation of the rotary compressor represented in the past.

Embodiment

Below, based on mode of execution shown in the drawings, the present invention is described in detail.

[the 1st mode of execution]

Below, the compressor 10 involved by the 1st mode of execution of the present invention is described.The feature of compressor 10 is, the rib 56 being equivalent to intensive aspect is integrally formed by baffler 50A described later, alleviates the vibration of main shaft 23 thus.

Below, first the structure of compressor 10 is described, next the effect of compressor 10, effect is described.

[structure of compressor 10]

Compressor 10 is a kind of so-called two-cylinder type compressors, and as shown in Figure 1, in the inside of cylindric seal container 11, discoid cylinder 20A, 20B are arranged respectively to two-layer up and down.In the inside of cylinder 20A, 20B, be formed with cylindric cylinder inner wall face 20S respectively.In the inner side of cylinder 20A, 20B, be configured with cylindric piston rotary 21A, 21B separately, the external diameter of this cylindric piston rotary 21A, 21B is less than the internal diameter of cylinder inner wall face 20S.Piston rotary 21A, 21B, is inserted into separately and is fixed on eccentric axial portion 40A, the 40B of main shaft 23, and main shaft 23 is along the central axis of seal container 11.Accordingly, between the cylinder inner wall face 20S of cylinder 20A, 20B and the outer circumferential face of piston rotary 21A, 21B, be formed with the space R in the cross section with crescent shape respectively.

At this, the piston rotary 21A of epimere side and the piston rotary 21B of hypomere side is, its position is arranged to only differ 180 ° each other mutually.

In addition, upper and lower between cylinder 20A, 20B, be provided with discoid dividing plate 24.By dividing plate 24, the space R in the cylinder 20A of epimere side is not communicated with each other with the space R of the cylinder 20B of hypomere side, is divided into pressing chamber R1 and pressing chamber R2.

Upper and lower cylinder 20A, 20B are provided with not shown slide plate, pressing chamber R1 and R2 are divided into respectively 2 parts.Slide plate is supported on by free to advance or retreat, extends and in the insertion groove that formed along the radial direction of cylinder 20A, 20B, relative to piston rotary 21A, 21B close on the direction left.

In addition, cylinder 20A, 20B, on the position of defined, are formed with the hole that spues of the refrigeration agent that spues, and this hole that spues possesses leaf valve, and spue hole and leaf valve omission diagram.When being reached the value of defined by the pressure of refrigeration agent compressed, by pushing leaf valve open, refrigeration agent is by the outside of spue cylinder 20A, 20B.

Main shaft 23 is by the upper bearing 29A be fixed on cylinder 20A and the lower bearing 29B be fixed on cylinder 20B, and the surrounding along its central axis is rotatably supported.

Main shaft 23 possesses eccentric axial portion 40A, 40B, and eccentric axial portion 40A, 40B offset to the direction crossing with the central axis upright of main shaft 23.The external diameter of eccentric axial portion 40A, 40B is more smaller slightly than the internal diameter of piston rotary 21A, 21B.So, when main shaft 23 rotates, eccentric axial portion 40A, 40B rotate along the central axis of main shaft 23, and upper and lower piston rotary 21A, 21B carry out eccentric rotary in cylinder 20A, 20B.At this moment, the front end of above-mentioned slide plate, follow the action of piston rotary 21A, 21B and retreat, piston rotary 21A, 21B are pushed always.

Main shaft 23 prolongs upper bearing 29A to be given prominence to upward and extends, and in outstanding part, is wholely set the rotor 37 of the electric motor 36 for rotary actuation main shaft 23.Relative with the peripheral part of rotor 37, stator 38 is fixed at the inner peripheral surface of seal container 11.

Upper bearing 29A, as shown in Figures 2 and 3, possess base portion 291A with from the vertical sleeve pipe 292A holded up of base portion 291A.It is consistent that base portion 291A and sleeve pipe 292A are formed its axle center, is formed with the supporting surface 293A of supports main shaft 23 around this axle center.The outer circumferential face of the base portion 291A of upper bearing 29A is by 3 place immovable point F, and the inner peripheral surface of seal container is fixed together.This fixed operation can realize connecting by the mode of welding or bolt.

Lower bearing 29B, possess base portion 291B with from the vertical sleeve pipe 292B holded up of base portion 291B.It is consistent that base portion 291B and sleeve pipe 292B are formed its axle center, is formed with the supporting surface 293B of supports main shaft 23 around this axle center.

Upper bearing 29A and lower bearing 29B, be configured to respective base portion 291A with 291B relative, upper bearing 29A is supports main shaft 23 between cylinder 20A and electric motor 36.In main shaft 23, from the part that cylinder 20B gives prominence to downward, supported by lower bearing 29B.

Upper bearing 29A possesses the hole that spues, and diagram is omitted in this hole that spues, and this spues, hole is connected with the hole that spues be formed on cylinder 20A, from the refrigeration agent that cylinder 20A flows out, after this spues hole, is told to the inside of baffler 50A described later.Equally, lower bearing 29B possesses the hole that spues, and diagram is omitted in this hole that spues, and this spues, hole is connected with the hole that spues be formed on cylinder 20B, from the refrigeration agent that cylinder 20B flows out, after this spues hole, is told to the inside of baffler 50B described later.

Compressor 10, is loaded in baffler 50A on upper bearing 29A, is loaded on lower bearing 29B by baffler 50B simultaneously.The refrigeration agent of runoff upper bearing 29A and lower bearing 29B, when flowing into the inside of baffler 50A and baffler 50B respectively separately, removes composition of beating.Be removed the refrigeration agent of composition of beating, flowed through the path that spues being formed at baffler 50A and baffler 50B, the top towards seal container 11 flows into.

The side of seal container 11, on the position relative with the outer circumferential face of cylinder 20A, 20B, is formed with opening 12A, 12B.On cylinder 20A, 20B, on the position relative with opening 12A, 12B, be formed with suction port 30A, 30B, this suction port 30A, 30B are communicated to the assigned position of cylinder inner wall face 20S always.

In compressor 10, accumulator 14 is fixed on seal container 11 by pillar 15, and accumulator 14, for before providing to compressor 10, first implements gas-liquid separation to refrigeration agent.

Accumulator 14 is provided with suction pipe 16A, 16B, and this suction pipe 16A, 16B establish to be drawn into by the refrigeration agent in accumulator 14 in compressor 10.The front end of suction pipe 16A, 16B is connected suction port 30A, 30B by opening 12A, 12B.

Refrigeration agent is taken into the inside of accumulator 14 by compressor 10 from the suction port 14a of accumulator 14, in accumulator 14, gas-liquid separation is carried out to refrigeration agent, this gas phase is supplied to inner space and pressing chamber R1, R2 of cylinder 20A, 20B from suction pipe 16A, 16B via suction port 30A, 30B of cylinder 20A, 20B.

Then, carry out eccentric rotary by piston rotary 21A, 21B, the volume of pressing chamber R1, R2 reduces gradually, and refrigeration agent is compressed.Refrigeration agent after compression, about the side of cylinder 20A, by upper bearing 29A and baffler 50A, in addition, about the side of cylinder 20B, by lower bearing 29B and baffler 50B, told to the inside of seal container 11, i.e. the outside of baffler 50A and baffler 50B.This refrigeration agent, by after electric motor 36, is discharged in the pipe arrangement forming refrigeration cycle via the discharge opening 42 being located at top.

In present embodiment, except upper bearing 29A, the baffler 50A being loaded into upper bearing 29A also possesses the function of supports main shaft 23.Baffler 50A possesses the support function to main shaft 23, can alleviate the vibration of main shaft 23 thus.In order to play this function, baffler 50A possesses following structure.

Baffler 50A as shown in FIG. 2 and 3, possesses: flange 51, the cup 52 holded up from flange 51, the sleeve pipe 53 holded up from cup.Baffler 50A can pass through flat sheet metal, and such as aluminium alloy plate carries out sheet metal processing, flange 51, cup 52 and sleeve pipe 53 is formed as one.

Flange 51 is parts required when being fixed on upper bearing 29A by baffler 50A, is the rounded flat component of profile.Flange 51 with upper bearing 29A above do not leave a blank while unoccupied place tightly fastens, by running through the bolt B of flange 51, be fixed on upper bearing 29A in 3 places.And the position that the bolt B of flange 51 is fixed, corresponding with throttling 59, and this throttling 59 is towards the central concave of the radial direction of the sidewall 54 of cup 52.

Cup 52 possesses: hollow cylindrical sidewall 54 and cover the sky plate 55 of the opening being formed at sidewall 54 front end.

It plate 55 is in the cyclic form with periphery and inner circumferential, and outer circumferential side is connected with sidewall 54, and inner circumferential side is connected with sleeve pipe 53 simultaneously.

It plate 55 possesses rib 56, and this rib 56 forms as one with sky plate.

Rib 56 along sky plate 55 radial direction and be set up, and a part for sky plate 55 bent upward and turn back, and being formed as U-shaped.Therefore, the inside of rib 56 is connected with the inside of cup 52.

Rib 56, separates certain spacing in the circumferential, is arranged on 3 places.Extended in the outside of the end of the outer circumferential side of each rib 56 towards radial direction, just can arrive immovable point F, upper bearing 29A is fixed on seal container 11 by this immovable point F.In addition, the inner side of the end of the inner circumferential side of each rib 56 towards radial direction is extended, just can arrive the central shaft of main shaft 23.That is, rib 56 is corresponding with the line segment of the central shaft and immovable point F that connect main shaft 23, namely substantially arranges along this line segment.

Rib 56 is formed, and the hypomere from sky plate 55 to sidewall 54 connects always, and meanwhile, the upper end from sky plate 55 to sleeve pipe 53 connects always.That is, rib 56 is across to the upper end of sleeve pipe 53 from the lower end of cup 52 and arranges, and contributes to the rigidity improving cup 52 and sleeve pipe 53.

Sleeve pipe 53 is vertically holded up from the inner circumferential of sky plate 55, and there is opening upper end.The inner peripheral surface of sleeve pipe 53 contacts with the outer circumferential face of the sleeve pipe 292A of upper bearing 29A, and sleeve pipe 292A from peripheral support.As mentioned above, rib 56 is across to the upper end of sleeve pipe 53 from the lower end of sleeve pipe 53 and arranges, and therefore the rigidity of sleeve pipe 53 is larger than not arranging comparing of rib 56.

[action effect of compressor 10]

Below, the effect of the compressor 10 involved by the 1st mode of execution is described.

Through carrying out simulation observation to the distortion distribution of the compressor 10 in running, found that in upper bearing 29A, along larger than the distortion of other field to the distortion in the field of the radial direction of the central shaft of main shaft 23 from each immovable point F.This illustrates, the burden degree of the field supports main shaft 23 that this distortion is larger is greater than other field.To this, compressor 10, by utilizing the baffler 50A possessing rib 56 via upper bearing 29A, while main shaft 23 is supported, because the line segment of this rib 56 along the radial direction at the center of 3 the immovable point F with main shaft 23 that connect upper bearing 29A is arranged, therefore can be described as on the position that has been arranged on and effectively can have suppressed vibration.Therefore, baffler 50A can alleviate result from upper bearing 29A, along from immovable point F towards the larger distortion on the field of the radial direction of the central shaft of main shaft 23,, main shaft 23 is supported via upper bearing 29A by sleeve pipe 53, so the whirling vibration of main shaft 23 can be alleviated meanwhile.Consequently, compressor 10 there is no gains in weight, and by improving the rigidity of baffler 50A, can suppress the noise because producing from seal container 11 to accumulator 14 transmitting vibrations.

In addition, baffler 50A strengthens the rigidity required by upper bearing 29A to a certain extent, therefore can expect the rigidity that can reduce upper bearing 29A, realizes the light-weighted effect of upper bearing 29A.

In baffler 50A, the inner side of rib 56 is connected with the inside of baffler 50A.Therefore, flow through from cylinder 20A and flow into the refrigeration agent of baffler 50A inside, flow through from refrigerant flow path 61 i.e. the 1st refrigerant flow path of rib 56 inside, eventually through the inside of the rib 56 of sleeve pipe 53, the inside from its upper end to seal container 11 spues.

So, the refrigeration agent flowing into baffler 50A presents smooth flowing state along main shaft 23 and is spued, therefore less by the pressure loss of the refrigeration agent spued.

In addition, because be to spue refrigeration agent from the surrounding of main shaft 23, the distance between the stator 38 therefore arriving electric motor 36 departs from from radial direction, and the refrigeration agent spued is not easy to add stator 38 to shake.Thus one, compressor 10 can be made to alleviate noise caused by vibration.

[variation of compressor 10]

Compressor 10 involved by 1st mode of execution, corresponding 3 immovable point F and possess 3 ribs 56, but the present invention is not limited thereto, also allows to arrange the rib less than more than 3 or 4.Such as, when there being 3 immovable point F, when only becoming large from the distortion the field of the inside Zhou Yanshen of some specific immovable point F, just can select only to arranging rib in the field of immovable point F.

The words that each rib 56 extends just can be met immovable point F by compressor 10, but the present invention is not only confined to this.Clearly, even if some offsets a little for the elongation line of rib and immovable point F, if a part for rib with distort larger field and coincide, just can improve the axle rigidity of main shaft 23.In the present invention, part or all field larger with distortion of rib is coincided, is defined as the line segment along the radial direction being connected and fixed a F and center, and comprises the rib being formed and meet this definition.

Next, in compressor 10, most preferably be, rib 56 is across to the upper end of sleeve pipe 53 from the lower end of cup 52 and arranges continuously.But this is one of a kind of more satisfactory state, such as, also only can be arranged on sleeve pipe 53 and sidewall 54, or only be arranged on sleeve pipe 53 and sky plate 55 is first-class, any one part being namely across to sleeve pipe 53 from cup 52 can arrange rib.

In compressor 10, the sleeve pipe 53 of baffler 50A, except the space of the inside of rib 56, contact, but the present invention is not only confined to this with upper bearing 29A.Such as, can be only the part being formed with rib 56 is contacted with upper bearing 29A, and carry out the structure that supports.In addition, in present embodiment, rib 56 also has the refrigerant flow path 61 of the baffler 50A outside that to be spued to by refrigeration agent concurrently, so there is no the necessary hole that spues arranging other refrigeration agents that spue.At this, in order to improve the axle rigidity of main shaft 23, except the space of the inside of rib 56, contact with upper bearing 29A.

[the 2nd mode of execution]

In 1st mode of execution, rib 56 and baffler 50A are formed in order to one, but in the compressor 110 of the 2nd mode of execution, rib 57 and baffler 50A is individually manufactured, as shown in Figure 4, it is engaged with baffler 50A.Here joint, can be suitable for welding, brazing, the method for generally acknowledging such as stick.At this moment, the inside of rib 57 and the inside of baffler 50A separate by sky plate 55, therefore rib 57 can not play the effect of the stream of so-called refrigeration agent.So, as shown in Figure 4, sky plate 55 forms hole 60 i.e. the 2nd refrigerant flow path that spues, as the circulation flow path of refrigeration agent.But, the gap in the hole that is equivalent to spue also can be set between sleeve pipe 53 and the sleeve pipe 292A of upper bearing 29A.

Compressor 110 possesses rib 57, and the therefore with 1st mode of execution is the same, and the noise that can produce the vibration of transmitting from seal container 11 to accumulator 14 suppresses.

When rib 56 and baffler 50A form as one, from the viewpoint of processability, shape, the size of rib 56 are all likely restricted.Such as, have to rib 56 to do higher time, and baffler 50A forms as one just more difficult.But the rib 57 made separately does not just almost have such restriction, therefore can corresponding various shape and size requirement.

In addition, in the mode that rib and sky plate individually make, in order to improve rigidity, preferably rib is extended to flange 51.

[the 3rd mode of execution]

In 1st mode of execution and the 2nd mode of execution, rib 56,57 is arranged on baffler 50A, but the compressor 120 of the 3rd mode of execution, as shown in Figure 5, rib 58 is arranged on upper bearing 29A.The position of rib 58 is set, identical with the 1st mode of execution, the 2nd mode of execution.

And, when omitting illustrated baffler 50A and being subject to the interference of rib 58 of upper bearing 29A, implement processing to avoid the interference to baffler 50A.In addition, baffler 50A to be arranged in the 2nd mode of execution the set hole 60 that spues, therefore possess the structure of the refrigeration agent that to spue from baffler 50A.

Compressor 120 possesses rib 58, and the therefore with 1st mode of execution is the same, and the noise that can produce the vibration of transmitting from seal container 11 to accumulator 14 suppresses.Particularly, compressor 120 arranges rib 58 on upper bearing 29A, and the Thickness Ratio baffler 50A of upper bearing 29A is thick, therefore improves the degree of rigidity more greatly to main shaft, more effectively can suppress vibration.In addition, when reducing its thickness to realize the lightweight of upper bearing 29A, also in order to keep the rigidity of bearing self, it is effective for arranging rib 58.

More than be illustrated based on embodiments of the present invention, only otherwise when exceeding purport of the present invention, carry out choices selection in the structure that can exemplify from above-mentioned mode of execution, also can suitably change to other structures.

Such as, mode of execution described above be for two-cylinder type compressor, but the present invention is not only confined to this, also go for such as single casing compressor, also go for the compound compressor that scroll compressor mechanism and rotary compression mechanism combine.

In addition, refer to reinforcement rib in mode of execution described above, this reinforcement rib is along to be connected and fixed a little and the line segment of radial direction of the alignment of shafts extends, and immovable point here refers to the immovable point be fixed on by upper bearing on seal container.But, such as, by the shape of upper bearing or the impact of deformation pattern, when wanting to suppress bearing torsional deformation, it is also very effective that reinforcement rib is circumferentially set.

Description of reference numerals

10,110,120 compressors

11 seal containers

12A, 12B opening

14 accumulators

14a suction port

15 pillars

16A, 16B suction pipe

20A, 20B cylinder

20S cylinder inner wall face

21A, 21B piston rotary

23 main shafts

24 dividing plates

29A upper bearing

29B lower bearing

291A, 291B base portion

292A, 292B sleeve pipe

293A, 293B supporting surface

30A, 30B suction port

36 electric motors

37 rotors

38 stators

40A, 40B eccentric axial portion

42 discharge openings

50A, 50B baffler

51 flanges

52 glasss

53 sleeve pipes

54 sidewalls

55 days plates

56,57,58 ribs (intensive aspect)

59 throttlings

60 spue hole (the 2nd refrigerant flow path)

61 refrigerant flow paths (the 1st refrigerant flow path)

B bolt

F immovable point

R space

R1, R2 pressing chamber

Claims

1. a rotary compressor, is characterized in that, possesses: by provided refrigerant compression and the rotary compression mechanism spued;

Be folded with upper bearing and the lower bearing of described rotary compression mechanism;

Supported freely rotatably respectively by upper bearing and lower bearing, and run through the main shaft of described rotary compression mechanism;

Described main shaft is driven the electric motor of rotation along the surrounding of its central axis;

Be fixed on described upper bearing, and the refrigeration agent for spuing from described rotary compression mechanism flow into inner baffler;

And by described rotary compression mechanism, described upper bearing, described lower bearing, described main shaft, described electric motor and described baffler storage seal container therein, wherein,

At least one in described baffler and described upper bearing is provided with intensive aspect, described intensive aspect extends along with lower line segment, and described line segment is the line segment connecting the radial direction described upper bearing being fixed on the immovable point of described seal container and the center of above-mentioned main shaft.

2. rotary compressor according to claim 1, is characterized in that,

Described intensive aspect is arranged on described baffler.

3. rotary compressor according to claim 1 and 2, is characterized in that,

Described intensive aspect and described baffler form as one.

4. rotary compressor according to claim 1, is characterized in that, described baffler possesses:

The described intensive aspect formed as one with described baffler, and,

Be formed on described intensive aspect, for circulating from the refrigerant flow path of the inner described refrigeration agent spued to described seal container inside of described baffler.

5. rotary compressor according to claim 1, is characterized in that, described baffler possesses:

Separate with described baffler and formed separately, and, be fixed on the described reinforcement rib on described baffler,

For circulating from the 2nd refrigerant flow path of the inner described refrigeration agent spued to described seal container inside of described baffler.

6. rotary compressor according to claim 5, is characterized in that,

The inside of described rib (57) and the inside of described baffler are separated by sky plate,

Described sky plate is formed described 2nd refrigerant flow path.

7. rotary compressor according to claim 1, is characterized in that,

Described intensive aspect is arranged on described upper bearing.

8. rotary compressor according to any one of claim 1 to 7, is characterized in that,

Described intensive aspect is multiple intensive aspect ribs.