CN1802511A - Compressor - Google Patents

Abstract

In a cylinder (23) of a compression mechanism (20), an intake passage (40) passing through the cylinder (23) in the radial direction thereof is formed. There is provided in a sealed container (10) a coupling member (43) having a tip end face facing the periphery of the intake passage (40) in the outer face of the cylinder (23) and a base end to which an intake pipe (42) is mounted. The tip end face of the coupling member (43) serves as a flat sealed face. A concave groove (23a) is formed in a peripheral part around the intake passage (40) in the outer face of the cylinder (23) and an O ring (45) is fitted therein. The O ring (45) is pressed against the tip end face of the coupling member (43), sealing a gap between the cylinder (23) and the coupling member (43).

Description

Compressor

Technical field

The present invention relates to motor is housed in compressor in the seal container, the live axle of described motor rotation drive compression mechanism and this compressing mechanism particularly belongs to the technical field of the structure in seal container with compressing mechanism and motor elastic support.

Background technique

Up to now, with the upside of motor mounting at compressing mechanism, make both integrated, allow the closed rotary compressor of coil spring between the diapire of above-mentioned compressor structure and seal container well-known (for example, with reference to patent documentation 1: the spy opens flat 1-203688 communique).In this compressor, by elastic support compressing mechanism and motor, suppress the vibration of passing to seal container from compressing mechanism and motor, reduce the noise that is produced in the running.

At the compressor shown in the patent documentation 1, be so-called high pressure dome compressor.In this compressor, the gas that will compress in compressing mechanism sprays in the seal container.In this compressor,, be fixed on the diapire of this seal container in order to will suck the suction pipe of gas importing seal container inside.It is consistent with the axle center of the live axle of compressing mechanism that the dirty end of this suction pipe is set to its center line.And the suction path that will be communicated to the pressing chamber of compressing mechanism forms tubulose.It is consistent with the center line of the dirty end of above-mentioned suction pipe that this upper reaches end that sucks path is set to its center line, is inserted in this suction pipe.Between the inner peripheral surface of the outer circumferential face of above-mentioned suction path and suction pipe, be provided with the O ring.

And, in the compressor shown in the patent documentation 1, being provided with the pin coaxial (pin) with live axle at the head of seal container, this pin inserts the top of motor, and the direction of displacement of compressing mechanism and motor is limited on the axle direction and Zhou Fangxiang of live axle.And, in this compressor, will suck path and suction pipe and be arranged to live axle coaxially, insert suction pipe by sucking path, between is provided with O ring, come under the situation that does not hinder compressing mechanism and motor displacement with suction pipe with suck between the path and seal.

Here, in rotary compressor, between the inner peripheral surface of the outer circumferential face of the piston that is contained in live axle and cylinder, form the pressing chamber of compressing mechanism.Therefore, be connected to the dirty end of the suction path of pressing chamber, have in the axle center of distance live axle on the position of certain distance at cylinder inner face opening.So, in the compressor of above-mentioned patent documentation 1, form crooked shape with sucking path, make the center line of this suction path upper reaches end consistent with the axle center of live axle.

But, if adopt the such structure of above-mentioned patent documentation 1, the problem that then exists compressor efficiency to reduce.That is to say that in the compressor of patent documentation 1, because the suction path of gas by bending flows to compressing mechanism, the gas pressure loss that therefore arrives till the pressing chamber becomes big.So, descending in the gas density in the moment that flows into pressing chamber, its result causes the reduction of compressor efficiency.

Summary of the invention

The present invention is the invention in view of the premises, its purpose is: when when compressing mechanism and motor elastic support are in seal container, on the sealing configuration of the suction path of compressing mechanism and suction pipe, work hard, the gas pressure loss that is drawn into compressing mechanism is increased, and do not hinder under the situation of compressing mechanism and motor displacement, positively will suck between path and the suction pipe and seal.

The present invention faces toward the opening portion that suction pipe is arranged to the suction path in the outer side surface with compressing mechanism, making the peripheral part of the suction path in the outer side surface of cylinder or any one party of seal container inner face is smooth sealing surface, utilizes the sealing mechanism with the sealed member that is pressed against the sealing face to connect suction pipe and sucks path.

The 1st invention is to be object with such compressor, comprise: the cylindric seal container 10 that connects suction pipe 42 and spraying pipe 14, the gas that compression sucks from above-mentioned suction pipe 42 also sprays to compressing mechanism 20 in the seal container 10, be connected to the compressing mechanism 20 that the motor 30 and support of the live axle 31 of this compressing mechanism 20 is accommodated in the above-mentioned seal container 10 and the elastic support member 65 of motor 30.

And, in above-mentioned compressor structure 20, be formed on and run through this compressing mechanism 20 on the radial direction, at the suction path 40 of the outer side surface opening of this compressing mechanism 20.The opening portion that above-mentioned suction pipe 42 is set to the suction path 40 in the outer side surface of its terminal and above-mentioned compressor structure 20 faces toward.The peripheral part of the suction path 40 in the outer side surface of above-mentioned compressor structure 20 reaches and any one party of the part of the inner face of the above-mentioned seal container 10 that this peripheral part faces toward constitutes sealing surface.And, be provided with by having by the sealed member 45 that is pressed in above-mentioned sealing surface, with the clearance seal of above-mentioned compressor structure 20 and seal container 10, connect the sealing mechanism S of above-mentioned suction pipe 42 and suction path 40.

In this structure, after the live axle 31 of compressing mechanism 20 rotated driving by motor 30, the gas of suction pipe 42 flowed into the suction path 40 that is connected by sealing mechanism S.This suction path 40 runs through compressing mechanism 20 on radial direction, it is shaped as straight line shape, and it is shorter that its length also becomes.And, from the gas of suction pipe 42, by being drawn into compressing mechanism 20 for straight line shape and than short suction path 40.

In this compressor, the outer side surface of the inner face of seal container 10 and compressing mechanism 20 faces toward.And in above-mentioned compressor, any one of the outer side surface of the compressing mechanism 20 that faces toward mutually and the inner face of seal container 10 becomes sealing surface.By with sealed member 45 by being pressed on the sealing face, make sealing mechanism S will be between compressing mechanism 20 and the seal container 10 sealing.

In the running of above-mentioned compressor, if compressing mechanism 20 vibration, this compressing mechanism 20 is towards the axle direction and the Zhou Fangxiang displacement of live axle 31, and then the outer side surface of compressing mechanism 20 is towards the direction displacement with respect to the inner face almost parallel of seal container 10.At that time, the sealed member of sealing mechanism S 45 slides with the sealing surface that is arranged on compressing mechanism 20 or seal container 10, under the situation that does not hinder compressing mechanism 20 displacements with compressing mechanism 20 and seal container 10 between sealing.

The 2nd invention is on the basis of the 1st invention, and the part of the inner face of the seal container 10 that faces toward with the peripheral part of suction path 40 in the outer side surface of compressing mechanism 20 constitutes sealing surface.In compressing mechanism 20, form the circular chase 23a of the opening portion that centers on the suction path 40 in its outer side surface.Above-mentioned sealed member 45 is formed ring-type, embed above-mentioned chase 23a, and constitute by the bottom surface of this chase 23a and above-mentioned sealing surface and clip resiliently deformable.And above-mentioned chase 23a and sealed member 45 constitute sealing mechanism S.

In this structure, the part that the peripheral part of the suction path 40 in the inner face of seal container 10 and outer side surface compressing mechanism 20 faces toward constitutes sealing surface.And, sealed member 45 is embedded among the chase 23a of compressing mechanism 20.Sealing parts 45 are clipped by the inner face of the bottom surface of chase 23a and seal container 10, become the state that is crushed out of shape on thickness direction.And sealed member 45 is bonded in sealing surface that the inner face by seal container 10 constitutes and the bottom surface of chase 23a, will sealing between compressing mechanism 20 and the seal container 10.On-stream, after compressing mechanism 20 vibrations, sealed member 45 is with compressing mechanism 20 displacements, with the sealing surface slip of seal container 10.

The 3rd invention is on the basis of the 2nd invention, and constituting above-mentioned sealed member is O ring 45.

In this structure, be embedded into the chase 23a of compressing mechanism 20 as the O ring 45 of sealed member.And this O ring 45 is crushed out of shape on thickness direction, bonds together with compressing mechanism 20 and seal container 10.

The 4th invention is on the basis of the 2nd invention, and it is the U word shape that sealed member 70 forms section, constitutes resiliently deformable on thickness direction.

In this structure, the section of sealed member 70 becomes the U word shape.Sealing parts 70, a side of its thickness direction is bonded in the bottom surface of chase 23a, and the another side is bonded in the inner face of seal container 10.Sealing parts 70, its section are hollow shape.Therefore, sealing parts 70 are that the O ring of middle real shape is compared with section for example, and are more yielding on its thickness direction.

The 5th invention is on the basis of the 1st invention, and seal container 10 comprises: interface unit 43, the peripheral part of the suction path 40 in the outer side surface of front-end face and compressing mechanism 20 faces toward, and is equipped with suction pipe 42 at terminal side.The peripheral part of the suction path 40 in the outer side surface of above-mentioned compressor structure 20 constitutes sealing surface; Above-mentioned interface unit 43 partly forms its forward end cylindricly, constitutes columnar portion 71.And, the section of above-mentioned sealed member 72 is formed tetragonal ring-type, and has play ground to embed above-mentioned columnar portion 71 it; Be provided with at sealing mechanism S pressing force is acted on the sealing parts 72, so that the front-end face of sealed member 72 pushes up the pressing component 75 of above-mentioned sealing surface.

In this structure, the outer side surface of compressing mechanism 20 constitutes sealing surface.On the other hand, there is play ground to embed the columnar portion 71 of interface unit 43 sealed member 72, can on the axle direction of columnar portion 71, moves.By pressing component 75 with the front-end face of sealing parts 72 by being pressed on the sealing surface.On-stream, after compressing mechanism 20 vibrations, the sealed member 72 that is arranged on interface unit 43 shakes the sealing surface of the compressing mechanism 20 of displacement.And, when this compressing mechanism 20 along with the vibration of compressing mechanism 20 during towards the direction displacement vertical with the front-end face of interface unit 43, sealed member 72 and then compressing mechanism 20 displacement and move towards the axle direction of columnar portion 71, make sealed member 72 remain state with the sealing surface bonding of compressing mechanism 20.

The 6th invention is on the basis of the 5th invention, and constituting pressing component is to withstand on the cardinal extremity face of sealed member 72 and the spring 75 of interface unit 43.

In this structure, between the cardinal extremity face of sealed member 72 and interface unit 43, spring 75 is set.By this spring 75 front-end face of sealed member 72 is pressed to sealing surface.

The 7th invention constitutes the sealed member 72 outer circumferential face sliding contacts for the whole week of inner peripheral surface and columnar portion 71 on the basis of the 6th invention.

In this structure, there is play ground to be embedded into the sealed member 72 of columnar portion 71, inner circumferential surface is along the whole week slip of the outer circumferential face of columnar portion 71.That is to say that the external diameter of the internal diameter of sealed member 72 and columnar portion 71 is almost equal, become state almost very close to each other between sealed member 72 and the columnar portion 71.

The 8th invention is on the basis of the 5th invention, in sealed member 72, along the interior all ditch 72a of being formed with in whole week of inner circumferential surface.In above-mentioned sealing mechanism S, be provided with and embed above-mentioned interior all ditch 72a, the O that contacts with the outer circumferential face of columnar portion 71 ring 76.

In this structure, O ring 76 is embedded into interior all ditch 72a of sealed member 72, has play ground to be embedded into columnar portion 71 sealed member 72 under this state.The bottom surface bonding of the outer circumferential face of this O ring 76 and interior all ditch 72a of sealed member 72, and the outer circumferential face bonding of the inner peripheral surface of O ring 76 and columnar portion 71.If sealed member 72 moves towards the axle direction of columnar portion 71, then O ring 76 slides with the outer circumferential face of columnar portion 71.

The 9th invention is on the basis of the 5th invention, and constituting pressing component is to withstand on the cardinal extremity face of sealed member 72 and the O ring 77 of interface unit 43.

In this structure, O ring 77 is set between the cardinal extremity face of sealed member 72 and interface unit 43.This O ring 77 is bonded in sealed member 72 and 43 liang of sides of interface unit.If this O ring 77 resiliently deformable on thickness direction, then the front-end face of sealed member 72 is pressed towards sealing surface because of its recuperability.

The 10th invention is on the basis of the 1st invention, and seal container 10 comprises: the cylindric body 11 of Yan Shening, the top runner plate 12 that the upper end of this body 11 is blocked and the bottom runner plate 13 that the lower end of this body 11 is blocked up and down.Above-mentioned top runner plate 12, its underpart is inserted into the inboard of body 11.In the compressing mechanism 20 or motor 30 that support by elastic support member 65, be provided with the lower end of pushing up above-mentioned top runner plate 12, blocking portion (stopper) 32a of the displacement amount of limit compression mechanism 20 and motor 30.

In this structure, if top runner plate 12 is assembled in body 11, then the lower end part of top runner plate 12 is in than the inner peripheral surface of body 11 in the inner part position also.Here, when the conveying of compressor etc., have the situation that big vibromotive force acts on compressing mechanism 20 and motor 30 sometimes.At this moment, if compressing mechanism 20 and motor 30 be towards top displacement established amount, then blocking portion 32a pushes up the underpart of top runner plate 12.Therefore, limited the displacement amount that compressing mechanism 20 and motor 30 move towards upper position.

The 11st invention in above-mentioned seal container 10, is provided with compressing mechanism 20 below motor 30 on the basis of the 1st invention, by plate-like support member 61 above-mentioned compressor structure 20 is fixed on the elastic support member 65.On the other hand, in order to compressed gas is sprayed to ejiction opening 57 in the seal container 10 in the lower aperture of above-mentioned compressor structure 20.Above-mentioned supporting part 61 constitutes the opening portion of the ejiction opening 57 below the covering compressing mechanism 20.

In this structure, by supporting part 61 compressing mechanism 20 is being fixed on the supporting part 65 below the motor 30.On the other hand, compressed gas sprays in the seal container 10 from the ejiction opening 57 in the lower aperture of compressing mechanism 20 in compressing mechanism 20.The supported parts 61 of the opening portion of this ejiction opening 57 cover.Therefore, compressed gas sprays to space between compressing mechanism 20 and the supporting part 61 from ejiction opening 57 in compressing mechanism 20.At this moment, for example, upside at compressing mechanism 20 is provided with upside baffler 59, simultaneously, in compressing mechanism 20, be provided with the space that makes between this compressing mechanism 20 and the supporting part 61, during with intercommunicating pore that above-mentioned upside baffler 59 is communicated with, the ejection gas that sprays between the following and supporting part 61 of compressing mechanism 20 is directed onto upside baffler 59 by this intercommunicating pore.

The 12nd invention on the basis of the 5th invention, above-mentioned sealing mechanism S along the outer circumferential face of columnar portion 71 be formed with periphery ditch 71a whole week, the ring portion 78 of shape that has excised the part of annulus is embedded above-mentioned periphery ditch 71a.The above-mentioned ring portion 78 that utilization makes resiliently deformable towards the recuperability of its diametric(al) expansion with the outer circumferential face of this ring portion 78 by the inner peripheral surface that is pressed in sealed member 72, with the clearance seal of above-mentioned columnar portion 71 and sealed member 72.

In this structure, the part that the inner peripheral surface with sealed member 72 in the outer circumferential face of columnar portion 71 faces toward forms periphery ditch 71a along its whole week.Ring portion 78 is embedded into this periphery ditch 71a.Be embedded in periphery ditch 71a ring portion 78 around sealed parts 72 surround, become towards diametric(al) and be compressed, resiliently deformable state.Utilization make ring portion 78 self towards the recuperability of diametric(al) expansion with this outer circumferential face of the ring portion 78 of resiliently deformable by on the inner peripheral surface that is pressed in sealed member 72.And the ring portion 78 by will being embedded into periphery ditch 71a is by the inner peripheral surface that is pressed in sealed member 72, with the clearance seal of columnar portion 71 and sealed member 72.

The 13rd invention is on the basis of the 12nd invention, and sealed member 72 and ring portion 78 all are metallic.

In this structure, between the inner peripheral surface of the outer circumferential face of ring portion 78 and sealed member 72, produce surface friction drag.This surface friction drag produces between metallic ring portion 78 and metallic sealed member 72.On the other hand, for example, when the O ring was embedded periphery ditch 71a, surface friction drag produced between rubber system O ring and metallic sealed member 72.And the surface friction drag of metal and metal is less than the surface friction drag of metal and rubber.Therefore, the surface friction drag of metallic sealed member 72 and metallic ring portion 78 is less than the surface friction drag that encircles with rubber system O.Thereby, to compare with the O ring, ring portion 78 can more successfully slide for sealed member 72.

The 14th invention comprises on the basis of the 1st invention: pressure difference is eliminated mechanism 52, makes to suck gas pressure on compressing mechanism 20, to reduce the pressing force that acts on suction path 40 directions on the compressing mechanism 20 because of the ejection gas in the above-mentioned seal container 10.

According to this structure, in the running of hermetic type compressor, the ejection gas pressure in the seal container 10 is on compressing mechanism 20.And,, therefore import the suction air pressure that sucks path 40 and also act on the compressing mechanism 20 because suction pipe 42 is connected on the suction path 40 of compressing mechanism 20.Pressure difference is eliminated mechanism 52 further makes the suction gas pressure ejection air pressure arranged and sucking on the compressing mechanism 20 of gas pressure.Consequently, the power that acts on the compressing mechanism 20 that the suction air pressure of its effect is caused because of the ejection air pressure in the seal container 10, the suction air pressure that imports suction path 40 and pressure difference elimination mechanism 52 is respectively eliminated mutually.Thereby, reduced the pressing force that acts on the compressing mechanism 20 towards suction path 40 directions.

In addition, in the 14th invention, it also can be the mechanism that only cuts down the pressing force of suction path 40 directions that act on the compressing mechanism 20 that pressure difference is eliminated mechanism 52, also can be to cut down this pressing force, is 0 mechanism.

The 15th invention is on the basis of the 14th invention, and above-mentioned compressor structure 20 is made of the rotary type fluid machine that forms pressing chamber 22 between the outer circumferential face of the inner peripheral surface of cylinder 23 and piston 25.And above-mentioned pressure difference is eliminated mechanism 52 and is constituted and allow the outer side surface that sucks the cylinder 23 of gas pressure in above-mentioned compressor structure 20.

According to this structure, because eliminating mechanism 52, pressure difference will suck the outer side surface of gas pressure at cylinder 23, therefore reduced the pressing force of suction path 40 directions that compressing mechanism 20 is subjected to from ejection gases in the seal container 10 there, i.e. the pressing force of the radial direction of cylinder 23.So, pressure difference elimination mechanism 52 makes suction air pressure act directly on being formed with on the cylinder 23 that sucks path 40 in the compressing mechanism 20.

The 16th invention is on the basis of the 15th invention, and above-mentioned pressure difference is eliminated mechanism 52 and constituted to allow and suck on the side opposite with sucking path 40 of gas pressure in the outer side surface of cylinder 23.

According to this structure, pressure difference eliminate mechanism 52 make suck gas pressure in the outer side surface of cylinder 23 with places suction path 40 opposite sides that run through this cylinder 23.So, for example, constitute to make and suck the place that air pressure only acts on cylinder 23, also can stably suppress the displacement of compressing mechanism 20 and motor 30 even pressure difference is eliminated mechanism 52.

The 17th invention is on the basis of the 15th invention, above-mentioned pressure difference is eliminated mechanism 52, comprise: suction pressure chamber 50 that zoning forms between the outer side surface of the inner face of seal container 10 and cylinder 23 and the access 51 that this suction pressure chamber 50 is communicated with the suction path 40 of compressing mechanism 20.Constitute and allow the gas pressure of above-mentioned suction pressure chamber 50 on cylinder 23.

According to this structure, the suction air pressure that will suck path 40 by access 51 imports suction pressure chamber 50.This suction pressure chamber 50 is formed between the outer side surface of the inner face of seal container 10 and cylinder 23.And, be imported into the outer side surface of the suction gas pressure of suction pressure chamber 50 at cylinder 23.

The 18th invention constitutes above-mentioned pressure difference and eliminates the access 51 of mechanism 52 and be formed on cylinder 23 on the basis of the 17th invention.

According to this structure,, therefore the parts that constitute access 51 needn't be set in addition owing to be formed with the access 51 that pressure difference is eliminated mechanism 52 at the cylinder 23 that constitutes compressing mechanism 20.

The 19th invention on the basis of the 17th invention, constitute above-mentioned pressure difference eliminate the access 51 of mechanism 52 form along the inner peripheral surface of cylinder 23 extend circular-arc.

According to this structure, between the outer side surface of cylinder 23 and inner peripheral surface, form access 51, hinder towards the transmission of heat of the inner peripheral surface road 51 that is connected from the outer side surface of cylinder 23.That is to say that the heat of the high temperature ejection gas in the seal container 10 is difficult to pass to pressing chamber 22.

The 20th invention is to be object with such compressor, comprise: the cylindric seal container 10 that is connected with suction pipe 42 and spraying pipe 14, the gas that compression sucks from above-mentioned suction pipe 42 also sprays to compressing mechanism 20 in the seal container 10, be connected to the compressing mechanism 20 that the motor 30 and support of the live axle 31 of this compressing mechanism 20 is accommodated in the above-mentioned seal container 10 and the elastic support member 65 of motor 30.

And, above-mentioned compressor structure 20, its profile is cylindric, and sucks path 40 at its outer circumferential face opening.Above-mentioned suction pipe 42, the opening portion that is set to the above-mentioned suction path 40 in the outer circumferential face of its terminal and above-mentioned compressor structure 20 faces toward.On the other hand, comprising: sealing mechanism S, in order to form the low-voltage space 81 that is communicated with above-mentioned suction path 40 and above-mentioned suction pipe 42 in the gap between the inner peripheral surface of the outer circumferential face of the above-mentioned compressor structure 20 that faces toward each other and above-mentioned seal container 10.

In this structure, the state that the outer circumferential face of compressing mechanism 20 faces toward for its whole the inner peripheral surface with seal container 10.And, between the inner peripheral surface of the outer circumferential face of compressing mechanism 20 and seal container 10, be formed with annular gap along whole week.On the other hand, in compressor, be provided with in order in the gap of the inner peripheral surface of the outer circumferential face of compressing mechanism 20 and seal container 10, to form the sealing mechanism S of low-voltage space 81.The part that the sealed S of mechanism in the gap of compressing mechanism 20 and seal container 10 separates becomes the low-voltage space 81 that is communicated to suction pipe 42 and sucks path 40.

In said structure, after the live axle 31 of compressing mechanism 20 drove by motor 30 rotations, the gas of suction pipe 42 flowed into by low-voltage space 81 and sucks path 40.Suction pipe 42, the opening portion of the suction path 40 in the outer side surface of its terminal and compressing mechanism 20 faces toward.Flow into the gas of the suction path 40 of compressing mechanism 20, be compressed the back from compressing mechanism 20 ejections.

As mentioned above, by suction pipe 42 the suction gas of low pressure is imported the suction path 40 of compressing mechanism 20.Here, if think remove the state all parts suction path 40 on of ejection gas pressure in the outer circumferential face of compressing mechanism 20 that be assumed to be, then under this state, the air pressure that acts on the radial direction of compressing mechanism 20 becomes inhomogeneous.And, if suck path 40 sides, touch seal container 10 because of air pressure is pressed to compressing mechanism 20, then can not stop the vibration of passing to seal container 10 from this compressing mechanism 20 fully.

Be directed to this, in the 20th invention, be formed with low-voltage space 81 whole week along the gap of the inner peripheral surface of the outer circumferential face of above-mentioned compressor structure 20 and seal container 10.That is to say, the interior pressure of low-voltage space 81, promptly suck air pressure thereon along the whole Zhou Zuoyong of the outer circumferential face of above-mentioned compressor structure 20.Therefore, the gas pressure of homogeneous is on the radial direction of compressing mechanism 20, and compressing mechanism 20 can not be subjected to the influence of air pressure.And owing to can stop the compressing mechanism 20 that causes because of air pressure towards the displacement that sucks path 40 sides, this compressing mechanism 20 does not touch the phenomenon of seal container 10, has therefore positively interdicted the vibration of passing to seal container 10 from compressing mechanism 20.

The 21st invention constitutes in sealing mechanism S on the basis of the 20th invention, and the opening portion both sides of the suction path 40 of the O in the whole week of 20 outer circumferential face ring 79 in this outer circumferential face are provided with one respectively to the major general along compressing mechanism.

In this structure, be provided with O ring 79 whole week along the outer circumferential face of compressing mechanism 20.Be provided with one respectively in the opening portion both sides that suck path 40 to this O of major general ring 79.O ring 79 is compressed the outer circumferential face of mechanism 20 and the inner peripheral surface of seal container 10 clips, and becomes the state that is crushed out of shape on thickness direction.And, bond together by making O ring 79 and the outer circumferential face of compressing mechanism 20 and the inner peripheral surface of seal container 10, come in the gap of compressing mechanism 20 and seal container 10, form along whole week and be communicated to the low-voltage space 81 that sucks path 40.

The 22nd invention in the outer circumferential face of compressing mechanism 20, is formed with a chase 23c along its whole week at least respectively in the opening portion both sides that suck path 40 on the basis of the 20th invention.Sealing mechanism S comprises: above-mentioned chase 23c and form the shape that the part of annulus has been excised and embed the ring portion 80 of this chase 23c.Constitute utilize the above-mentioned ring portion 80 make resiliently deformable towards the recuperability of its diametric(al) expansion with the outer circumferential face of this ring portion 80 by the inner peripheral surface that is pressed in seal container 10, with the clearance seal of above-mentioned compressor structure 20 and seal container 10.

In this structure,, form chase 23c along its whole week at the outer circumferential face of compressing mechanism 20.This chase 23c is respectively arranged with one at least in the opening portion both sides that suck path 40.Ring portion 80 is embedded among each chase 23c.Be embedded into the ring portion 80 among the chase 23c, be sealed container 10 on every side and surround, on diametric(al), be compressed, become the state of resiliently deformable.Utilization make ring portion 80 self towards the recuperability of diametric(al) expansion with this resiliently deformable the outer circumferential face of ring portion 80 by the inner peripheral surface that is pressed in seal container 10.And, be pressed in the inner peripheral surface of seal container 10 by the ring portion 80 that will embed chase 23c, with the clearance seal of compressing mechanism 20 and seal container 10, form and be communicated to the low-voltage space 81 that sucks path 40.

The 23rd invention is on the basis of the 22nd invention, and the material property of ring portion 80 is a metal.

In this structure, between the inner peripheral surface of the outer circumferential face of ring portion 80 and seal container 10, produce surface friction drag.General seal container 10 is a metallic, and this surface friction drag produces between metallic ring portion 80 and metallic seal container 10.On the other hand, for example, when embedding the O ring among the chase 23c, surface friction drag produces between rubber system O ring and metallic seal container 10.And the surface friction drag of metal and metal is less than the surface friction drag of metal and rubber.Therefore, the surface friction drag of metallic seal container 10 and metallic ring portion 80 is less than the surface friction drag that encircles with rubber system O.Thereby, to compare with the O ring, ring portion 80 can more successfully slide for seal container 10.

The 24th invents on the basis of the 20th invention, constitutes to be formed with the way to cycle oil 29 that runs through this compressing mechanism 20 at axle direction in compressing mechanism 20.

In this structure, in compressing mechanism 20, form way to cycle oil 29.Here, at the refrigerator oil that from the gas of compressing mechanism 20 ejections, is mixed with in order to lubricate compressors structure 20.This refrigerator oil is separated from the gas in the seal container 10 that arrives between the spraying pipe 14.On the other hand, the gap of the inner peripheral surface of the outer circumferential face of compressing mechanism 20 and seal container 10 is sealed by sealing mechanism S.That is to say, in seal container 10, become the state that is isolated into two spaces by sealing mechanism S.In this invention, be provided with way to cycle oil 29 in compressing mechanism 20, refrigerator oil separated from the gas passes through way to cycle oil 29 to another spatial movement from the space that has been full of ejection gas in the seal container 10.

(effect of invention)

Above-mentioned the 1st invention, face toward by the opening portion of suction pipe 42 being arranged to the suction path 40 in the outer side surface with compressing mechanism 20, on the sealing surface that sealed member 45 is constituted by any one party that is pressed in by the inner face of the outer side surface of compressing mechanism 20 and seal container 10, will sealing between compressing mechanism 20 and the seal container 10.Therefore, even compressing mechanism 20 is when the axle direction of live axle 31 and Zhou Fangxiang displacement in the running of compressor, also can slide by making sealed member 45 and the sealing surface that is arranged on compressing mechanism 20 or seal container 10, come under the situation that does not hinder compressing mechanism 20 displacements with compressing mechanism 20 and seal container 10 between sealing.

So, according to the 1st invention, even when having formed the suction path 40 that on radial direction, runs through compressing mechanism 20, also can under the situation that does not hinder compressing mechanism 20 displacements in the compressor operation, guarantee the sealing between compressing mechanism 20 and the seal container 10.Therefore, according to this invention, form on straight line shorter by sucking path 40, the phenomenon of having avoided the gas pressure loss increase that is inhaled into, and can be by sealing mechanism S positively with sealing between the compressing mechanism 20 of relative displacement and the seal container 10, and, can guarantee the displacement degrees of freedom of compressing mechanism 20, cut down the vibration of passing to seal container 10 from compressing mechanism 20.

Above-mentioned the 2nd invention, sealing mechanism S is made of the sealed member 45 that is formed on the chase 23a in the compressing mechanism 20 and be embedded among the chase 23a.Therefore, can be enough simple structure realizes sealing mechanism S, can suppress the increase of the compressor cost that causes along with the setting of sealing mechanism S.

Because above-mentioned the 3rd invention uses the O ring 45 generally be widely used as sealed member, therefore can further suppress the increase of the compressor cost that causes along with the setting of sealing mechanism S.

Above-mentioned the 4th invention, sealed member 70 forms the U word shape with its section, and is more yielding on thickness direction.Therefore, when vibration along with compressing mechanism 20, compressing mechanism 20 is during towards the direction displacement vertical with the inner face of seal container 10, because sealed member 70 more easily towards the thickness direction distortion, therefore can reduce the vibromotive force that passes to seal container 10 from compressing mechanism 20 along with the displacement of compressing mechanism 20.So,, can further reduce the vibration of passing to seal container 10 from compressing mechanism 20 according to this invention.

Above-mentioned the 5th invention has play ground to be embedded into columnar portion 71 sealed member 72, on the sealing surface that sealing parts 72 is constituted by the outer side surface that is pressed in by compressing mechanism 20 by pressing component 75.Therefore, even compressing mechanism 20 displacement along with the vibration of compressing mechanism 20 also can remain the front-end face of sealed member 72 state that bonds with sealing surface, can more positively will seal between compressing mechanism 20 and the interface unit 43.

Above-mentioned the 6th invention, by spring 75 with the cardinal extremity face of sealed member 72 by being pressed on the sealing surface.Therefore, when vibration along with compressing mechanism 20, compressing mechanism 20 is during towards the direction displacement vertical with the front-end face of interface unit 43, can be because of the distortion of spring 75, reduce the vibromotive force that passes to seal container 10 from compressing mechanism 20 fully, can further reduce the vibration of passing to seal container 10 from compressing mechanism 20.

Above-mentioned the 7th invention, sealed member 72, the outer circumferential face along whole all sliding contacts of inner peripheral surface to columnar portion 71 almost is in state very close to each other between the outer circumferential face of the inner peripheral surface of sealed member 72 and columnar portion 71.Therefore,, sealed member 72 is moved freely along columnar portion 71 according to this invention, and can be with sealing between sealed member 72 and the columnar portion 71.

Above-mentioned the 8th invention embeds O ring 76 among interior all ditch 72a of sealed members 72, utilizes between the outer circumferential face of this O ring 76 with the inner peripheral surface of sealed member 72 and columnar portion 71 to seal.Therefore, guarantee the sealing between sealed member 72 and the columnar portion 71, and can increase the interval of the outer circumferential face of the inner peripheral surface of sealed member 72 and columnar portion 71.And, owing to increased the interval of the outer circumferential face of the inner peripheral surface of sealed member 72 and columnar portion 71, therefore can be more positively with sealing between the compressing mechanism 20 of displacement in the running and the seal container 10.

This point is illustrated.Sometimes in the running of compressor, the situation of the outer side surface of compressing mechanism 20 for the inner face tilt displacement of seal container 10 arranged.In this case,, sealed member 72 is tilted, make the whole face of the front-end face of whole sealed member 72 be bonded in the outer side surface of compressing mechanism 20 in order to ensure the sealing between compressing mechanism 20 and the seal container 10.And, if with the interval of the outer circumferential face of the inner peripheral surface of sealed member 72 and columnar portion 71 establish broad, even so sealed member 72 and then compressing mechanism 20 tilt the phenomenon that does not also have sealed member 72 to contact with columnar portion 71.

Above-mentioned the 8th invention can positively make the and then displacement of compressing mechanism 20 of sealed member 72, the front-end face of sealed member 72 can be remained under the state with the outer side surface bonding of compressing mechanism 20, positively will sealing between compressing mechanism 20 and the seal container 10.And, because therefore the sealed member 72 and then displacement of compressing mechanism 20 positively can reduce the vibration of passing to seal container 10 by this sealed member 72 from compressing mechanism 20.

Above-mentioned the 9th invention, utilize the O ring generally be widely used 77 with sealed member 72 by being pressed on the sealing surface.Therefore, can suppress the increase of compressor cost, and meanwhile sealed member 72 is bonded on the sealing surface, positively with sealing between compressing mechanism 20 and the interface unit 43.

Above-mentioned the 10th invention by blocking portion 32a being withstood on embed the lower end of the top runner plate 12 of body 11, comes the over-large displacement of limit compression mechanism 20 and motor 30.Therefore, for example,, also can prevent from self to be bumped against on the seal container 10 phenomenon that sustains damage by the compressing mechanism 20 of elastic support and motor 30 even there is very big vibromotive force to act on transporting of compressor when middle.

Above-mentioned the 11st invention utilizes in order to compressing mechanism 20 being installed in the opening portion that supporting part 61 on the elastic support member 65 covers ejiction openings 57, with gas from ejiction opening 57 spray to compressing mechanism 20 below and space between the supporting part 61.Therefore, can avoid because of from ejiction opening 57 gases of ejection downwards, and the phenomenon that the refrigerator oil that retains in the bottom of seal container 10 is dispersed can prevent that the refrigerator oil that disperses from flowing into ejiction opening 57.

And ejection gas is temporarily sprayed between the following and supporting part 61 of compressing mechanism 20.

At this moment, for example, when the upside that upside baffler 59 is arranged on compressing mechanism 20, simultaneously, when the intercommunicating pore that the space make between this compressing mechanism 20 and the supporting part 61 and above-mentioned upside baffler 59 be communicated with was set in compressing mechanism 20, the ejection gas that sprays between the following and supporting part 61 of compressing mechanism 20 was sprayed onto upside baffler 59 by intercommunicating pore.Therefore, the pulsation of ejection gas can be relaxed, the ejection sound that produces because of the pulsation that sprays gas can be reduced.That is to say, in this invention, can utilize inflow and the reduction ejection sound that compressing mechanism 20 necessary supporting parts 61 prevent refrigerator oil is set.Therefore, needn't be provided with in addition and reduce the used baffler of ejection sound and prevent the parts that refrigerator oil flows into, can reduce the component number order, can seek the cost degradation of compressor.

Above-mentioned the 12nd invention, utilize make the ring portion 78 that embeds among the periphery ditch 71a towards the recuperability of its diametric(al) expansion with this ring portion 78 by the inner peripheral surface that is pressed in sealed member 72, with the clearance seal of columnar portion 71 and sealed member 72.So, according to this invention, owing to constitute sealing mechanism S by periphery ditch 71a and ring portion 78, therefore can be positively with sealing between columnar portion 71 and the sealed member 72.

Above-mentioned the 13rd invention produces surface friction drag between the inner peripheral surface of the outer circumferential face of ring portion 78 and sealed member 72.As mentioned above, the surface friction drag of metallic sealed member 72 and metallic ring portion 78 is less than the surface friction drag that encircles etc. with rubber system O.Therefore, according to this invention, can the ring portion 78 during displacement and the slip resistance of sealed member 72 diminish along with the vibration of compressing mechanism 20 with compressing mechanism 20, can more positively allow the and then displacement of compressing mechanism 20 of sealed member 72.And, can guarantee the displacement degrees of freedom of compressing mechanism 20, reduce the vibration of passing to seal container 10 from compressing mechanism 20.

Above-mentioned the 14th invention is eliminated mechanism 52 by pressure difference is set, and reduces the pressing force that acts on suction path 40 directions on the compressing mechanism 20 because of the ejection gas in the seal container 10.Therefore, can suppress because of the ejection air pressure in the seal container 10 and suck compressing mechanism 20 that differing from of air pressure cause and the displacement of motor 30.So, owing to can suppress the displacement of compressing mechanism 20 and motor 30, but therefore the hardness of elastic support member 65 can be set at the degree of the gravity of supporting effect on compressing mechanism 20 and motor 30.Consequently, compressing mechanism 20 and motor 30 are flexibly supported, and can suppress the vibration of passing to seal container 10 from these compressing mechanisms 20 and motor 30, can reduce the noise of hermetic type compressor.

And, owing to can suppress the displacement of above-mentioned compressor structure 20 and motor 30, therefore will seal container 10 and compressing mechanism 20 and motor 30 between the gap guarantee greatlyyer.So, can dwindle seal container 10, can make the hermetic type compressor miniaturization.

Above-mentioned the 15th invention, in the compressing mechanism 20 that is made of rotary type fluid machine, pressure difference is eliminated mechanism 52 and is made the outer side surface of suction gas pressure at cylinder 23.Therefore, suck air pressure and act directly on and be provided with on the cylinder 23 that sucks path 40, can be easily and stably suppress the displacement of compressing mechanism 20 and motor 30.

Above-mentioned the 16th invention, make and suck on the side opposite of gas pressure in the outer side surface of cylinder 23 because pressure difference is eliminated mechanism 52 with sucking path 40, therefore constitute only to make and suck gas pressure even for example pressure difference is eliminated mechanism 52, also can stably suppress the displacement of compressing mechanism 20 and motor 30 in a place of cylinder 23.So, can simplify the structure that pressure difference is eliminated mechanism 52, can reduce the cost of hermetic type compressor.

Above-mentioned the 17th invention is provided with suction pressure chamber 50 and access 51 in pressure difference elimination mechanism 52, allow the suction gas pressure that imports suction pressure chamber 50 on cylinder 23.Therefore, can be enough better simply structure realizes that pressure difference eliminates mechanism 52, can suppress to eliminate the rising of the hermetic type compressor cost that mechanism 52 causes because of pressure difference is set.

Above-mentioned the 18th invention owing to the access 51 of pressure difference being eliminated mechanism 52 is formed in the cylinder 23, therefore needn't be provided with the parts that constitute access 51 in addition.So, can suppress to eliminate the component number purpose increase that mechanism 52 causes because of pressure difference is set, simultaneously, can avoid the maximization of hermetic type compressor.

Above-mentioned the 19th invention utilizes the access 51 that is formed on cylinder 23, makes the heat of the high temperature ejection gas in the seal container 10 be difficult to pass to pressing chamber 22.Therefore, the heat that invades the suction gas in the pressing chamber 22 from seal container 10 interior ejection gases can be cut down, the efficient of compression work can be improved.

Above-mentioned the 20th invention is formed with low-voltage space 81 by sealing mechanism S in the gap of the inner peripheral surface of the outer circumferential face of compressing mechanism 20 and seal container 10.Here, seal container 10 forms cylindric, and the profile of compressing mechanism 20 forms cylindric.That is to say, between the inner peripheral surface of the outer circumferential face of compressing mechanism 20 and seal container 10, be formed with annular gap.So, on one side can suppress the complicated of compressor, Yi Bian in the gap of compressing mechanism 20 and seal container 10, form low-voltage space 81 by the sealing mechanism S of simple structure.

And the opening portion of suction pipe 42 being arranged to the suction path 40 in the outer circumferential face with compressing mechanism 20 faces toward.Therefore, when will sucking path 40 when forming the radial direction that runs through compressing mechanism 20, can avoid the increase of gas inhalating pressure loss with forming straight line shape to the path that sucks the suction gas till the path 40 from suction pipe 42.

As mentioned above, in the gap of the inner peripheral surface of the outer circumferential face of compressing mechanism 20 and seal container 10, be formed with low-voltage space 81, the interior pressure of low-voltage space 81, promptly suck the outer circumferential face of gas pressure at whole compressor structure 20 along whole week.So, the gas pressure of homogeneous is on the radial direction of compressing mechanism 20, and compressing mechanism 20 can not be subjected to the influence of air pressure.So, can hinder because of air pressure makes compressing mechanism 20 to sucking path 40 side displacements, can prevent that this compressing mechanism 20 from touching seal container 10, more positively interdict the vibration that passes to seal container 10 from compressing mechanism 20.

Above-mentioned the 21st invention constitutes sealing mechanism S by the O ring 79 along the whole outer circumferential face of compressing mechanism 20.Therefore, according to this invention, even compressing mechanism 20 displacement along with the vibration of compressing mechanism 20 also can make O ring 79 slide with respect to the inner peripheral surface of seal container 10, can be positively with the clearance seal of compressing mechanism 20 and seal container 10.And can be enough simple structure realizes sealing mechanism S, can suppress to be accompanied by the setting of sealing mechanism S and the increase of the compressor cost that causes.

Above-mentioned the 22nd invention, sealing mechanism S is made of the ring portion 80 that is formed on the chase 23c in the compressing mechanism 20 and embed wherein.And, utilize make the ring portion 80 that embeds among the chase 23c towards the recuperability of its diametric(al) expansion with it by on the inner peripheral surface that is pressed in seal container 10, with the clearance seal of compressing mechanism 20 and seal container 10.Therefore, according to this invention, even compressing mechanism 20 displacement along with the vibration of compressing mechanism 20 also can make ring portion 80 slide with respect to the inner peripheral surface of seal container 10, can be positively with the clearance seal of compressing mechanism 20 and seal container 10.And can be enough simple structure realizes sealing mechanism S, can suppress to be accompanied by the setting of sealing mechanism S and the increase of the compressor cost that causes.

Above-mentioned the 23rd invention produces surface friction drag between the inner peripheral surface of the outer circumferential face of compressing mechanism 20 and seal container 10.As mentioned above, the surface friction drag of metallic seal container 10 and metallic ring portion 80 is less than the surface friction drag that encircles etc. with rubber system O.Thereby, according to this invention, the slip resistance of compressing mechanism 20 ring portion 80 during displacement and seal container 10 along with the vibration of compressing mechanism 20 is reduced, can be more positively with the clearance seal of compressing mechanism 20 and seal container 10.

Above-mentioned the 24th invention forms way to cycle oil 29 in compressing mechanism 20.Here, in seal container 10, the space that will be full of the space of ejection gas and retain refrigerator oil clips compressing mechanism 20, and to be arranged on the situation of an opposite side more.And, when in compressing mechanism 20, way to cycle oil 29 not being set, I'm afraid that refrigerator oil separated from the gas can remain in the space that has been full of ejection gas, thereby cause the phenomenon that produces compressing mechanism 20 insufficient lubrications because of the deficiency of refrigerator oil.

On the other hand, in this invention,, therefore refrigerator oil separated from the gas can be retained in the space of refrigerator oil by way to cycle oil 29 importings owing in compressing mechanism 20, be formed with way to cycle oil 29.Therefore,,, the refrigerator oil that remains in a space is sprayed onto the structure in another space, also can prevents the deficiency of refrigerator oil, can avoid the insufficient lubrication of compressing mechanism 20 even isolated in the seal container 10 according to this invention.And,, the pressure in the seal container 10 can be remained under the state of homogeneous by way to cycle oil 29 is set.

Description of drawings

Fig. 1 is the longitudinal sectional drawing that shows the summary structure of the related rotary compressor of the 1st embodiment.

Fig. 2 is the A-A line sectional drawing among Fig. 1.

Fig. 3 is with near the longitudinal sectional drawing shown in the amplification sealing mechanism.

Fig. 4 is the related figure that is equivalent to Fig. 3 of the 1st embodiment's variation 1.

Fig. 5 is the related figure that is equivalent to Fig. 3 of the 1st embodiment's variation 2.

Fig. 6 is the 2nd embodiment's the figure that is equivalent to Fig. 1.

Fig. 7 is the 2nd embodiment's the figure that is equivalent to Fig. 3.

Fig. 8 is the figure that is equivalent to Fig. 3 that shows the state of compressing mechanism vibrating air cylinder displacement.

Fig. 9 is the related figure that is equivalent to Fig. 3 of the 2nd embodiment's variation 1.

Figure 10 is the related figure that is equivalent to Fig. 3 of the 2nd embodiment's variation 2.

Figure 11 is the related figure that is equivalent to Fig. 3 of the 2nd embodiment's variation 3.

Figure 12 is the 3rd embodiment's the figure that is equivalent to Fig. 1.

Figure 13 is the B-B line sectional drawing among Figure 12.

Figure 14 is the related figure that is equivalent to Fig. 1 of the 3rd embodiment's variation.

Embodiment

Below, with reference to accompanying drawing embodiments of the invention are described in detail.

(the 1st embodiment)

Fig. 1 is the related invention of the 1st embodiment of the present invention, has illustrated in the 1st embodiment the present invention is applicable to so-called situation of shaking piston type rotary compressor 1.This compressor 1 carries out the refrigeration agent compression stroke in the freeze cycle of air attemperation apparatus.

In above-mentioned compressor 1, compressing mechanism 20 and motor 30 are housed in the seal container 10.The live axle 31 of compressing mechanism 20, its axle direction are above-below direction.Motor 30 is arranged on the upside of compressing mechanism 20, is connected on the live axle 31 of compressing mechanism 20.Motor 30 becomes one with compressing mechanism 20, and this compressing mechanism 20 passes through supporting mechanism 63 elastic support in seal container 10.

Above-mentioned seal container 10 comprises: on above-below direction long cylindric body 11, be embedded into this body 11 the inboard, upper end bowl-shape top runner plate 12 and be arranged on the lower end of above-mentioned body 11 and greater than the tabular bottom runner plate 13 of the external diameter of this body 11.In the whole week of the upper end of above-mentioned body 11 and lower end, welding is on above-mentioned top runner plate 12 and bottom runner plate 13 respectively, and these bodies 11, top runner plate 12 and bottom runner plate 13 are by integrated.And the body 11 of seal container 10, its internal diameter be greater than the external diameter of compressing mechanism 20 grades, so that compressing mechanism 20 and motor 30 do not bump in the running.

In the substantial middle portion of above-mentioned top runner plate 12, be provided with the spraying pipe 14 that on above-below direction, runs through this top runner plate 12.And,, be provided with in order to terminal (terminal) 15 to above-mentioned motor 30 power supplies in the place that certain distance is arranged apart from spraying pipe 14 on diametric(al) of above-mentioned runner plate 12.

Above-mentioned seal container 10 comprises: in order to the interface unit 43 and piece (block) parts 46 of the suction path 40 that suction pipe 42 is connected to compressing mechanism 20.In addition, be illustrated sucking path 40 more later on.These interface units 43 and block part 46 form lack cylindric.And interface unit 43 and block part 46 are positioned at each front-end faces of seal container 10 inboards, for the center line of interface unit 43 and block part 46 tabular surface of quadrature roughly.Outer circumferential side in the front-end face of this interface unit 43 and block part 46 carries out the end face chamfered.

Therefore, in above-mentioned seal container 10, the part of its inner face is made of the front-end face of interface unit 43 and block part 46.And, the front-end face of interface unit 43, a part that faces toward for the peripheral part of the suction path 40 in the inner face of seal container 10 and outer side surface compressing mechanism 20.

In above-mentioned interface unit 43, be formed with penetration hole 43a.Penetration hole 43a, it is consistent with the center line of interface unit 43 to form its center line, at the front-end face and the cardinal extremity face opening of this interface unit 43.Penetration hole 43a forms the diameter of the diameter of its terminal side greater than forward end, and an end of suction pipe 42 inserts and is fixed in its terminal side part.And the centre of block part 46 is solid.

Above-mentioned interface unit 43 and block part 46 are installed on the body 11.Specifically, the central part of the ratio above-below direction of body 11 slightly by under the place, on the position that faces toward each other, be formed with one respectively in order to the interface side patchhole 11a that inserts interface unit 43 with in order to insert the piece side patchhole 11b of block part 46.The front end of interface unit 43 inserts interface side patchhole 11a, and the front end of block part 46 inserts piece side patchhole 11b.Under this state, with interface unit 43 and block part 46, along whole all weldings of separately outer circumferential face on the periphery of patchhole 11a, the 11b of body 11.

That is to say, interface unit 43 and block part 46 are arranged on the equal height in the housing 10 and are leaving on the Zhou Fangxiang on 180 ° the position.And the front-end face of interface unit 43 and block part 46 faces toward each other.

Above-mentioned compressor structure 20 comprises roughly forming cylinder 23 cylindraceous.Be provided with the fore head 54 of the upper-end surface opening that stops up this cylinder 23 on the top of this cylinder 23.And, be provided with the occiput 55 of the lower end surface opening that stops up this cylinder 23 in the bottom of cylinder 23.Utilize nut etc. (not illustrating among the figure) that these fore heads 54 and occiput 55 are linked with cylinder 23 and be one.This compressing mechanism 20, the center line that is positioned at the center line that makes cylinder 23 and above-mentioned housing 11 is consistent location roughly.

To be inserted in the piston 25 in the above-mentioned cylinder 23 by shaking of shaking of the rotation of live axle 31.And, in above-mentioned cylinder 23, be formed with the outer circumferential face that shaken piston 25, cylinder 23 inner peripheral surface, fore head 54 below and the pressing chamber 22 that surrounds above the occiput 55.

The above-mentioned piston 25 that shakes is to form as one towards the outstanding planar blade 25b that extends of diametric(al) foreign side with circular main body portion 25a with from a place of the outer circumferential face of this main body portion 25a to form, as shown in Figure 2.Under the state that above-mentioned blade 25b is clipped by a pair of lining 27, be inserted in the patchhole 28 that is supported on pressing chamber 22 foreign sides that are formed on cylinder 23.By this blade 25b, pressing chamber 22 zonings are become low voltage side and high pressure side.

Be formed with suction path 40 at above-mentioned cylinder 23.This sucks path 40, and the one end outwardly always runs through cylinder 23 from the one end at the inner peripheral surface opening of the cylinder 23 of the low voltage side that faces pressing chamber 22 on diametric(al).Suck the other end of path 40, at the outer side surface opening of cylinder 23.And the horizontal next door of the above-mentioned lining 27 in cylinder 23 is formed with ejiction opening 41.This ejiction opening 41 forms a pair of ejiction opening that extends from the upper-end surface of cylinder 23 and extend from its lower end surface down down.

And, in above-mentioned cylinder 23, be formed with access 51.This access 51 is made of circular-arc part 51a and straight line shape part 51b.Circular-arc part 51a roughly is the semicircle arcuation along the inner peripheral surface of the cylinder 23 of the low voltage side that faces above-mentioned pressing chamber 22 and extends.This circular-arc part 51a, its base end part are connected and suck path 40, the side opposite with sucking path 40 that its front end is arranged in cylinder 23.On the other hand, the straight line shape part 51b of access 51 forms from the front end of circular-arc part 51a and runs through cylinder 23 towards the diametric outside always.This straight line shape part 51b, it is consistent with the center line of above-mentioned suction path 40 to form its center line.And, the straight line shape part 51b of access 51, its front end is at the outer side surface opening of cylinder 23.

Be formed with the head side ejiction opening 56,57 that is communicated with the ejiction opening 41 of cylinder 23 sides respectively at above-mentioned fore head 54 and occiput 55, as shown in Figure 1.And the upper-end surface of the portion 54 that is in advance and the lower end surface of occiput 55 are respectively arranged with the ejection valve 48 that above-mentioned head side ejiction opening 56,57 is opened or closed.This ejection valve 48 is made of so-called leaf valve.If this ejection valve 48 is opened, then head side ejiction opening 56,57 is communicated with the inner space of seal container 10.That is to say that this compressor 1 constitutes the suction path 40 that makes compressing mechanism 20 and is connected suction pipe 42, and allows ejiction opening 56,57 be communicated to the so-called high pressure dome of the inner space of seal container 10.

The central part of portion 54 of being in advance is formed with outstanding cylindrical portion 58 up.This cylindrical portion 58, the sliding bearing of formation supporting driving shaft 31.The discoid upside baffler 59 that is roughly that covers above-mentioned head side ejiction opening 56 tops is fixed on the fore head 54.And also be formed with outstanding cylindrical portion 60 downwards at the central part of occiput 55.This cylindrical portion 60, the sliding bearing of formation supporting driving shaft 31.To be installed in occiput 55 in order to the supporting part 61 that compressing mechanism 20 is fixed on the bottom runner plate 13.This supporting part 61 is made of the sheet material also thicker than upside baffler 59, and extend in the outside from cylindrical portion 60 towards radial direction.This supporting part 61 forms the below that covers above-mentioned head side ejiction opening 57.

And, though do not illustrate among the figure, occiput 55, cylinder 23, and fore head 54 be provided with the space that allows between compressing mechanism 20 and the supporting part 61, the intercommunicating pore that is communicated with upside baffler 59.

Outer circumferential side below above-mentioned supporting part 61, be equipped with for example a plurality of, 4 supporting mechanisms 63 that certain intervals is arranged on Zhou Fangxiang.Each supporting mechanism 63 is by the base station 64 that is fixed on bottom runner plate 13; Be fixed on the top of this base station 64 and extend towards the top, the coil spring 65 below the upper end is fixed on supporting part 61 as elastic support member; Constitute with the prevention thing (stopper) 66 of the extending amount of limiting coil spring 65.The coil spring 65 of supporting mechanism, compressing mechanism 20 and motor 30 are supported for can (that is the axle direction of live axle 31) displacement on above-below direction.

Above-mentioned compressor structure 20 is arranged in and is arranged on the roughly the same height of the interface unit 43 of seal container 10 and block part 46.And, face-to-face with the penetration hole 43a opening portion in the front-end face of the opening portion of the suction path 40 in the outer side surface of cylinder 23 and interface unit 43, and the open part of the access in the outer side surface of cylinder 23 51 and block part 46 aspectant forms are provided with compressing mechanism 20.That is to say that the opening portion of the suction path 40 in the outer side surface of cylinder 23 faces toward with the terminal of the suction pipe 42 that is installed in interface unit 43.

The part of suction path 40 openings in the outer side surface of cylinder 23 is only more side-prominent outwardly on the radial direction of cylinder 23, as shown in Figure 2.This has only given prominence to the outstanding end face of the part of a bit, for the tabular surface of the radial direction quadrature of cylinder 23, extend upward at upper and lower, suck path 40 at this outstanding end face opening, as shown in Figure 3.Suck the outstanding end face of path 40 openings, face toward, between this two sides, be formed with narrower gap with the front-end face of interface unit 43.And, in cylinder 23, be provided with the ring chase 23a of the open part of the suction path 40 in this outstanding end face.This chase 23a forms with digging downwards in whole week around the open part of the suction path 40 in the outer side surface of cylinder 23.

O ring 45 embeds among the above-mentioned chase 23a.This O ring 45 forms the diameter of diameter greater than the penetration hole 43a of the opening of the suction path 40 of cylinder 23 and interface unit 43.The thickness of this O ring 45 be set to cylinder 23 in the bottom surface of chase 23a and the front-end face two sides bonding of interface unit 43, and by cylinder 23 and interface unit 43 folders the state for being out of shape.Owing to O is encircled 45 compressive strains so in advance,, also O can be encircled 45 and remain and the states of cylinder 23 and 43 liang of side's bondings of interface unit even therefore on-stream cylinder 23 is at distance interface unit 43 direction top offset far away.

The gap of cylinder 23 outer side surfaces and interface unit 43 front-end faces is by 45 sealings of this O ring, guaranteed that suction pipe 42 is to the sealing that sucks the path till the path 40.That is to say that in the present embodiment, the front-end face of interface unit 43 constitutes sealing surface, constitute sealed member by the O ring 45 that is pressed in the sealing face.And,, connect the sealing mechanism S of suction pipe 42 and suction path 40 by chase 23a that is formed on cylinder 23 and embedding O ring 45 clearance seals that constitute cylinder 23 and interface unit 43 wherein.

The part of the straight line shape part 51b opening of the access 51 in the outer side surface of cylinder 23 is only more side-prominent outwardly on the diametric(al) of cylinder 23, as shown in Figure 2.This has only given prominence to the outstanding end face of the part of a bit, for the tabular surface of the radial direction quadrature of cylinder 23, access 51 is at this outstanding end face opening.The outstanding end face of access 51 openings faces toward with the front-end face of block part 46, is formed with narrower gap between this two sides.And, in cylinder 23, be provided with the chase 23b of the open part of the access 51 in this outstanding end face.This chase 23b is that digging downwards in whole week around the open part of the access 51 in the outer side surface of cylinder 23 forms.

O ring 47 embeds among the above-mentioned chase 23b.This O ring 47 forms the diameter of diameter greater than the straight line shape part 51b of access 51, and this diameter equates with the O ring 45 that is arranged on suction path 40 sides.The thickness of this O ring 47 be set to cylinder 23 in the bottom surface of chase 23b and the front-end face two sides bonding of block part 46, and by cylinder 23 and block part 46 folders the state for being out of shape.And, even 20 displacements of on-stream compressing mechanism also can encircle O 47 and remain the state that bonds with cylinder 23 and 46 liang of sides of block part.

Encircle 47 inner parts than this O in the gap of cylinder 23 and block part 46, become from segregate suction pressure chamber 50 on every side.Coming out from being full of the inner space zoning that sprays the seal container 10 of gas in this suction pressure chamber 50, simultaneously, is communicated to suction path 40 by access 51.And, keep the sealing of suction pressure chamber 50 by O ring 47 with cylinder 23 and block part 46 bondings.And this suction pressure chamber 50 and above-mentioned access 51 constitute pressure difference and eliminate mechanism 52.

On the other hand, brushless DC motor is used in above-mentioned motor 30.In this DC motor, in order to improve motor efficiency, having adopted thickness is the thin electromagnetic steel plate of 0.2mm.As shown in Figure 1, motor 30 is made of cylindric stator 32 and rotor 33, and wherein, above-mentioned cylindric stator 32 is fixed on the fore head 54 of compressing mechanism 20, and above-mentioned rotor 33 is arranged to and can be rotated in this stator 32.Live axle 31 insertions are fixed among the center hole 33a of this rotor 33.

The center line that above-mentioned live axle 31 is positioned at its center line and above-mentioned cylinder 23 is consistent location roughly.Lower end side at this live axle 31 is formed with eccentric part 31a.Eccentric part 31a forms the diameter of diameter greater than the other parts of live axle 31, and its center line departs from the axle center of live axle 31.And above-mentioned live axle 31 runs through the main body portion 25a that shakes piston 25 that is arranged in the cylinder 23, and the outer circumferential face of its eccentric part 31a and the inner peripheral surface of main body portion 25a shake.

Peripheral part in said stator 32 is provided with a plurality of protuberance 32a that keep at a certain distance away on Zhou Fangxiang, described protuberance 32a is approaching to the lower end of above-mentioned upper mirror plate 12.Be formed with the penetration hole 32b that runs through above-below direction respectively in place corresponding to the protuberance 32a of stator 32.And on fore head 54 tops of above-mentioned compressor structure 20, be formed with the wheel hub corresponding (boss) 54a with the penetration hole 32b of said stator 32, by making nut 67 plug in the wheel hub 54a that logical above-mentioned through hole 32b is attached to fore head 54, stator 32 is fixed on fore head 54, make both integrated.

The protuberance 32a of said stator 32 constitutes the blocking portion of the displacement amount that moves towards upper position in order to limit compression mechanism 20 and motor 30.That is to say, for example, when carrying compressor 1,,, prevent the over-travel of compressing mechanism 20 and motor 30 by the lower end that makes protuberance 32a push up above-mentioned top runner plate 12 when when compressing mechanism 20 and motor 30 have applied bigger vibromotive force.

In the compressor 1 of said structure, in motor 30 starting, after shaking piston 25 and shaking, the suction gas of suction pipe 42 flows into and sucks path 40.The suction gas that flows into this suction path 40 is inhaled in the pressing chamber 22.

In above-mentioned compressor 1, suck path 40 and on the radial direction of cylinder 23, extend always, its length is shorter.Therefore, from the suction gas of suction pipe 42, be inhaled in this pressing chamber 22 by straight line shape and short suction path 40.So, suck the situation that gas flows into crooked suction path with making in the past and compare, diminish to the gas pressure loss that sucks till the pressing chamber 22 from sucking path 40.And, suppressed reduction in the gas density in the moment that flows into pressing chamber 22, improved the efficient of compressor 1.

Be inhaled into the suction gas of pressing chamber 22, shaken piston 25 compressions, pass through the ejiction opening 41 and the head side ejiction opening 56,57 of cylinder 23 sides successively.Ejection valve 48 is opened because of ejection air pressure at this moment, and the gas refrigerant in the compressed pressing chamber 22 is used as ejection gas and sprays in the seal container 10.

Become the high pressure conditions that is full of by ejection gas in the above-mentioned seal container 10 from compressing mechanism 20.At this moment,, at first sprayed to upside baffler 59, flowed to the outside of upside baffler 59 then from the ejection gas of head side ejiction opening 56.On the other hand, ejection gas from lower head side ejiction opening 57, at first sprayed to the inboard of supporting part 61, then by be arranged on occiput 55, cylinder 23, and the intercommunicating pore of fore head 54 import upside baffler 59, then flow to the outside of upside baffler 59.Therefore, relax the pulsation of ejection gas, reduced ejection sound.And, above-mentioned ejection gas, derive to the outside of seal container 10 by spraying pipe 14 in the space of motor 30 tops in the inflow seal container 10.

In above-mentioned compressor 1, cover the below of the head side ejiction opening 56 that is formed on occiput 55 by utilizing supporting part 61, the refrigerator oil that can prevent to remain in the bottom of seal container 10 flows into the phenomenon of head side ejiction opening 56.That is to say,, therefore cut down the component number order, can seek the miniaturization and the cost degradation of compressor 1 owing to the baffler that reduces ejection sound usefulness needn't be set at the downside of compressing mechanism 20 and prevent that refrigerator oil from flowing into the parts of usefulness.

-Di 1 embodiment's action effect-

In the running of this compressor 1, the vibration that generation causes along with the cogging of the compression work of compressing mechanism 20 and the vibration of motor 30, compressing mechanism 20 and motor 30 vibrations.In this compressor 1, because compressing mechanism 20 and motor 30 are supported by coil spring 65, therefore the vibration in compressing mechanism 20 and motor 30 generations is absorbed by coil spring 65.Thereby, reduced the vibration of passing to seal container 10 from compressing mechanism 20 and motor 30.

And, owing to compressing mechanism 20 is supported on the bottom of seal container 10 by a plurality of coil springs 65, therefore in the running of compressor 1, if vibration takes place for compressing mechanism 20 and motor 30, then the cylinder 23 of compressing mechanism 20 is also with respect to interface unit 43 and block part 46 displacements.The outer side surface of this cylinder 23 is smooth face on the axle direction of live axle 31, extends abreast with the front-end face of interface unit 43.So, in the running of compressor 1 after cylinder 23 displacements, embed cylinder 23 chase 23a O ring 45 just with the front-end face slip of interface unit 43.And this O ring 45 is under the situation that does not hinder compressing mechanism 20 displacements, with sealing between cylinder 23 and the interface unit 43.

And the O ring 47 of the chase 23b of embedding cylinder 23 slides with the front-end face of block part 46.And this O ring 47 is under the situation that does not hinder compressing mechanism 20 displacements, with sealing between cylinder 23 and the block part 46.And when cylinder 23 during towards the direction displacement vertical with the front-end face of interface unit 43 and block part 46, O ring 45,47 is out of shape along with the displacement of cylinder 23, guaranteed interface unit 43 and block part 46, and cylinder 23 between sealing.

So, according to present embodiment,, also can under the situation of 20 displacements of the compressing mechanism in the running that does not hinder compressor 1, guarantee the sealing between cylinder 23 and the interface unit 43 even formed when radial direction runs through the suction path 40 of cylinder 23.That is to say, to suck path 40 forms shortlyer on straight line, the phenomenon of having avoided the gas pressure loss increase that is inhaled into, and can utilize sealing mechanism S positively with sealing between cylinder 23 and the interface unit 43, can guarantee the displacement degrees of freedom of compressing mechanism 20, cut down the vibration of passing to seal container 10 from compressing mechanism 20.

And sealing mechanism S constitutes and form chase 23a in cylinder 23, and sealed member 45 is embedded among this chase 23a.Therefore, can enough simple structures realize sealing mechanism S.And because O ring 45 is widely used as sealed member, so the cost of the sealed member of sealing mechanism S is lower.So, the cost that can suppress the compressor 1 that causes along with the setting of sealing mechanism S increases.

And, use the opening portion that covers ejiction openings 57 in order to the supporting part 61 that compressing mechanism 20 is installed in coil spring 65, with gas from ejiction opening 57 spray to compressing mechanism 20 below and space between the supporting part 61.Therefore, can avoid, can prevent that the refrigerator oil that disperses from flowing to ejiction opening 57 because of from ejiction opening 57 gases of ejection phenomenon that the refrigerator oil that remains in seal container 10 bottoms is dispersed downwards.

And ejection gas flows to the outside of supporting part 61 below temporarily spraying to compressing mechanism 20 and after between the supporting part 61.Therefore, the pulsation of ejection gas can be relaxed, the ejection sound that brings because of the pulsation that sprays gas can be reduced.That is to say, can utilize the required supporting part 61 of compressing mechanism 20 is set, prevent the inflow of refrigerator oil and reduce ejection sound.So, the baffler that reduces ejection sound usefulness needn't be set in addition and prevent the parts that refrigerator oil flows into, can reduce the component number order, can seek the cost degradation of compressor 1, simultaneously, can seek the miniaturization of compressor 1.

And, be installed in the underpart of the top runner plate 12 of body 11, be positioned at the position more inner than the inner peripheral surface of body 11.And after compressing mechanism 20 and motor 30 moved the amount of regulation towards upper position, protuberance 32a pushed up the underpart of top runner plate 12.So, limited the displacement amount that compressing mechanism 20 and motor 30 move towards upper position.That is to say,, therefore limited the over-large displacement of compressing mechanism 20 and motor 30 owing to the lower end that makes protuberance 32a push up top runner plate 12.So, when carrying compressor 1 etc., when big vibromotive force acts on compressing mechanism 20 and the motor 30, can prevent from self to collide seal container 10 and bring the phenomenon of damage by the compressing mechanism 20 and the motor 30 of coil spring 65 elastic support.

And because this compressor 1 constitutes the high pressure dome, so the ejection of the high pressure in the seal container 10 air pressure is to whole compressor structure 20 and motor 30 same purposes.On the other hand, by suction pipe 42 low pressure is sucked the suction path 40 that gas imports the cylinder 23 of compressing mechanism 20.So, suck O that the ratio of gas pressure in this compressor 1 suck path 40 sides and encircle on the 45 inner zones.And, in this compressor 1, being provided with pressure difference and eliminating mechanism 52, the suction Pneumatic pipe cleaner that sucks path 40 is crossed the access importing suction pressure chambers 50 51 of cylinder 23.Thereby, suck the O that air pressure also acts on the cylinder 23 of the opposite side of ratio and suction path 40 in the cylinder 23 and encircle 47 inner zones.

That is to say, ejection gas pressure in the seal container 10 is on whole compressor structure 20, on the other hand, suction path 40 sides in the cylinder 23 of this compressing mechanism 20 and suck in the opposite side of path 40 with this suck air pressure and act on the zone that area is identical each other with opposite directions.Thereby, all to eliminate mutually because of acting on the ejection air pressure on the compressing mechanism 20 and sucking the power that acts on the compressing mechanism 20 that air pressure brings, the pressing force towards sucking path 40 directions that acts on the compressing mechanism 20 almost becomes 0.

Its result, owing to, but therefore the spring constant of coil spring 65 can be set at the smaller value of supporting effect about the gravity of compressing mechanism 20 and motor 30 because of the power that feeds through to compressing mechanism 63 that causes that differs from of ejection air pressure and suction air pressure does not act on the coil spring 65.Therefore, can make coil spring 65 softer, make the vibration of compressing mechanism 20 and motor 30 more be difficult to pass on the container, can reduce the noise of compressor 1 fully.

And, since reduced by above-mentioned pressure difference eliminate mechanism 52 act on the compressing mechanism 20 towards the pressing force that sucks path 40 directions, therefore suppressed the displacement of compressing mechanism 20 and motor 30.Its result can dwindle the gap of above-mentioned compressor structure 20 grades and seal container 10 inner faces.Seal container 10 can dwindle this gap can be dwindled that part of, can make compressor 1 miniaturization.

And, suck on the side opposite of gas pressure in the outer side surface of cylinder 23 owing to make with sucking path 40, therefore make by formation to suck the pressure difference in a place that air pressure only acts on the outer side surface of cylinder 23 and eliminate mechanism 52, can positively reduce towards the pressing force that sucks path 40 directions.So, can make pressure difference eliminate simplifying the structure of mechanism 52, can reduce the cost of compressor 1.And, because eliminating mechanism 52, pressure difference make suction air pressure act directly on the outer side surface of cylinder 23, therefore can be easier to and stably suppress the displacement of compressing mechanism 20 and motor 30.

And, between the outer side surface of the front-end face of above-mentioned the 2nd block part 46 and cylinder 23, form and suck air-pressure chamber 50, make the suction gas pressure that imports from access 51 outer side surface at cylinder 23.Therefore, can be enough better simply structure realizes that pressure difference eliminates mechanism 52, can suppress to eliminate the cost of the compressor 1 that mechanism 52 causes and rise because of pressure difference is set.And, can also change the power that causes because of pressure difference elimination mechanism 52 by changing the outer side surface area that constitutes the cylinder 23 that sucks air-pressure chamber 50 towards cylinder 23.

And,, therefore the parts that constitute access 51 can be set in addition owing to the access 51 of pressure difference being eliminated mechanism 52 is formed in the cylinder 23.So increase that can suppressing portion product number simultaneously, can be avoided the maximization of compressor 1.

And, because above-mentioned access 51 is extended to form along the low voltage side inner peripheral surface of the pressing chamber 22 of cylinder 23, therefore between the outer side surface of cylinder 23 and pressing chamber 22, be formed with the space.Stop from the transmission of heat of the outer side surface of cylinder 23 by this access 51 towards inner peripheral surface.Its result, the heat that is sprayed onto the high temperature ejection gas in the seal container 10 is difficult to pass to pressing chamber 22.Therefore, can suppress to be inhaled into the heated phenomenon of suction gas of pressing chamber 22, improve compressor efficiency.

In addition, in above-mentioned the 1st embodiment,, be not limited thereto though make suction air pressure only act on the structure in a place of cylinder 23 for eliminate mechanism 52 by pressure difference, also can constitute to make and suck gas pressure, not illustrate among the figure in a plurality of places of cylinder 23.That is to say, make suck gas pressure two local time when eliminate mechanism 52 by pressure difference at the outer side surface of cylinder 23, formation place with the suction path 40 of cylinder 23 is a benchmark, distance of substantially equal spacing on the Zhou Fangxiang of cylinder 23 is promptly every 120 ° of formation suction pressure chamber the same with above-mentioned the 1st embodiment.And, form a plurality of access that suction path 40 and above-mentioned each suction pressure chamber are communicated with at cylinder 23.

And, in the local time making the suction gas pressure 3 of cylinder 23, also can form the suction pressure chambers equally every 90 ° by pressure difference elimination mechanism 52.Make the outer side surface of suction gas pressure by such usefulness interval about equally, can positively reduce the pressing force that acts on compressing mechanism 20 at cylinder 23.

And, in above-mentioned the 1st embodiment,, also can be provided with two though only be provided with a suction pipe 42.At this moment, make the 2nd block part 46 the same with the structure of above-mentioned the 1st block part 46.To insert the penetration hole of the 2nd block part 46 for an end of the auxiliary suction pipe of the suction pipe the same with above-mentioned suction pipe 42.Owing to should be communicated to suction path 40 by access 51 by auxiliary suction pipe, and therefore suck gas and be inhaled in the pressing chamber 22 by two suction pipes 42.Consequently the flow velocity of the suction gas in suction pipe 42 and the auxiliary suction pipe descends.Therefore, the pressure loss of the suction gas when being inhaled into pressing chamber 22 can be reduced, the efficient of compressing mechanism 20 can be improved.And, when two or more suction pressures chamber is set, also can increase the number of suction pipe accordingly with it.

-Di 1 embodiment's variation 1-

In above-mentioned the 1st embodiment, though use the O ring as sealed member, as shown in Figure 4, also can replace this O ring, use hollow shape sealed member 70, the section of this hollow shape sealed member 70 forms the outer circumferential side opening at sealed member, is U word shape or horse shoe shaped.In addition, Fig. 4 is for near the figure shown in enlarging the interface unit among Fig. 1 43, though only show the sealed member 70 among the chase 23a of suction path 40 sides that embed cylinder 23, sealed member 70 also embeds among the chase 23b of access 51 sides of cylinder 23.

At this moment because the part that bottom surface in the sealed member 70 and the chase 23a of cylinder 23 contact and with part that the front-end face of interface unit 43 contacts between be hollow shape, so sealed member 70 is out of shape because of less power on its thickness direction.After the direction displacement vertical with the front-end face of interface unit 43, the distance of the front-end face of the outer side surface of cylinder 23 and interface unit 43 changes at compressing mechanism 20, and the variation of distance is corresponding therewith, and sealed member 70 is more yielding.So, under the front-end face two sides state of contact that sealed member 70 is remained on the bottom surface of the chase 23a of cylinder 23 and interface unit 43, positively with the clearance seal of cylinder 23 and interface unit 43.

And in this variation, because sealed member 70 is out of shape because of less power on thickness direction, therefore the vibration towards the direction vertical with the front-end face of the interface unit 43 of cylinder 23 is difficult to pass to seal container 10, has further reduced noise.

-Di 1 embodiment's variation 2-

In above-mentioned the 1st embodiment, though be sealing surface with the front-end face of interface unit 43, the inner face that also can make body 11 is a sealing surface, as shown in Figure 5.In this variation, the position that the peripheral part of the suction path 40 of in body 11 and outer side surface cylinder 23 faces toward is formed with inwardly recessed recess 11c.Be formed with interface side patchhole 11a at the center of this recess 11c.By the interface unit 43 that inserts interface side patchhole 11a suction pipe 42 is fixed on the body 11.

That is to say that recess 11c has circular section, the face that faces the inboard of body 11 becomes the tabular surface parallel with the axle direction of live axle 31.And interface unit 43 forms thinner cylindric of parts than the foregoing description, and an end of suction pipe 42 inserts the terminal side of the penetration hole 43a that is fixed on this interface unit 43.The front end of interface unit 43 inserts interface side patchhole 11a, with whole all weldings of the outer circumferential face of this interface unit 43 periphery at interface side patchhole 11a.

In addition, though do not illustrate among the figure, in this variation, the position that also can peripheral part in body 11 and access 51 cylinder 23 faces toward forms the recess with above-mentioned recess 11c-sample, makes O ring 47 be bonded in this recess.

(the 2nd embodiment)

Fig. 6 shows the related rotary compressor of the 2nd embodiment of the present invention.The rotary compressor of present embodiment is except the structure of sealing mechanism S, interface unit 43 and block part 46, the same with the 1st embodiment's structure.In following explanation, the same part with the 1st embodiment is marked prosign, only the part different with it described in detail.

In the present embodiment, also as shown in Figure 7, the peripheral part of the suction path 40 in the outer side surface of cylinder 23 becomes and the diametric(al) of cylinder 23 tabular surface of quadrature roughly, and this tabular surface becomes sealing surface.On the other hand, the forward end part of interface unit 43 forms cylindrically, and this part constitutes columnar portion 71.And, have play ground to embed this columnar portion 71 sealed member 72, with sealing parts 72 by being pressed on the sealing surface.

Specifically, will insert the interface side patchhole 11a of body 11, interface unit 43 will be inserted this cylinder part 73 than short tubular cylinder parts 73.The columnar portion 71 of interface unit 43, it is consistent with the center line of interface unit 43 to form its center line.The external diameter of this columnar portion 71 is less than the external diameter of the terminal side of interface unit 43.Cylinder part 73 forms whole outer circumferential face, the axle direction length of this cylinder part 73 and the axle direction same length of interface unit 43 of the terminal side that is bonded in interface unit 43.With whole all weldings of the front-end edge of cylinder part 73 interface side patchhole 11a at seal container 10.

The section of sealed member 72 forms tetragonal ring-type.That is to say that sealing parts 72 form extend cylindric than what lack on the axle direction of interface unit 43.Sealed member 72, its internal diameter is a bit larger tham the external diameter of columnar portion 71.At sealed member 72 all ditch 72a in being formed with in whole week of inner circumferential surface.O ring 76 is embedded should interior all ditch 72a.This O ring 76 is formed inner circumferential surface to be contacted with the outer circumferential face of columnar portion 71.

Between for the cardinal extremity face of interface unit 43 sides of sealed member 72 and interface unit 43, be provided with spring 75.This spring 75 forms on the axle direction of interface unit 43 flexible.Spring 75 is used on the sealed member 72 masterpiece towards cylinder 23 directions.The front-end face of sealed member 72 is because of on the sealing surface in the outer side surface that is subjected to power from this spring 75 and is pressed against cylinder 23.

In the present embodiment, O ring 76 is embedded into interior all ditch 72a of sealed member 72.Under this state, there is play ground to embed columnar portion 71 sealed member 72.Therefore, the outer circumferential face of O ring 76 is bonded in the bottom surface of interior all ditch 72a of sealed member 72, and the inner peripheral surface of O ring 76 is bonded in the outer circumferential face of columnar portion 71.So, can encircle between 76 the outer circumferential faces by O and seal the inner peripheral surface of sealed member 72 and columnar portion 71.

And, on the sealing surface that sealed member 71 is constituted by the outer side surface that is pressed in by cylinder 23 by spring 75.Therefore, even cylinder 23 displacement along with the vibration of compressing mechanism 20 also can remain on the front-end face of sealed member 72 under the state that bonds with sealing surface, can more positively will seal between cylinder 23 and the interface unit 43.

And, in the present embodiment, seal between the outer circumferential face of the O ring 76 of the interior all ditch 72a by embedding sealed member 72 with the inner peripheral surface of sealed member 72 and columnar portion 71.Therefore, not only guaranteed the sealing between sealed member 72 and the columnar portion 71, and can make the interval of outer circumferential face of the inner peripheral surface of sealed member 72 and columnar portion 71 wider.And the interval of the inner peripheral surface by making sealed member 72 and the outer circumferential face of columnar portion 71 is wider, can be more positively with sealing between the compressing mechanism 20 of displacement in the running and the seal container 10.

With reference to Fig. 8 this point is illustrated.In the running of compressor 1,, the displacement of the outer side surface of cylinder 23 with respect to the interior face tilt of seal container 10 arranged sometimes because of compressing mechanism 20 vibrations.At this moment,, sealed member 72 is tilted, make it be bonded in the outer side surface of cylinder 23 along the entire front end face of sealed member 72 in order to ensure the sealing between compressing mechanism 20 and the seal container 10.And, if words are set extensivelyr at the interval of the outer circumferential face of the inner peripheral surface of sealed member 72 and columnar portion 71, even the and then displacement deflection of compressing mechanism 20 of sealed member 72 then, the phenomenon that does not also have the inner peripheral surface of sealed member 72 to contact with the outer circumferential face of columnar portion 71.

Therefore, can make the sealed member 72 and then displacement of compressing mechanism 20 positively, the front-end face of sealed member 72 is remained on and the state of the outer side surface bonding of cylinder 23 under positively will sealing between compressing mechanism 20 and the seal container 10.And, because therefore the sealed member 72 and then displacement of compressing mechanism 20 positively can reduce the vibration of passing to seal container 10 by sealing parts 72 from compressing mechanism 20.

In addition, in the 2nd embodiment, the block part 46 also structure with interface unit 43 is the same.As shown in Figure 6, with the piece side patchhole 11b of cylinder part 83 insertion bodies 11, block part 46 is inserted these cylinder parts 83.The section of sealed member 82 is formed tetragonal ring-type, between for the cardinal extremity face of block part 46 sides of sealed member 82 and block part 46, be provided with spring 85.This spring 85 is used on the sealed member 82 masterpiece towards cylinder 23 directions, and sealed member 82 is because of being subjected to being pressed against from the power of this spring 85 outer side surface of cylinder 23.

-Di 2 embodiments' variation 1-

In above-mentioned the 2nd embodiment, though interior all ditch 72a are formed on sealed member 72, O ring 76 is embedded wherein, but also can omit O ring 76, simultaneously sealed member 72 is formed simple cylindric, make the whole inner peripheral surface of sealing parts 72 and the outer circumferential face sliding contact of columnar portion 71, as shown in Figure 9.That is to say that the internal diameter that also can make sealed member 72 forms the gap than the external diameter of columnar portion 71 only more greatly hardly between the outer circumferential face of the inner peripheral surface of sealed member 72 and columnar portion 71.So, even the interior all sides at sealed member 72 are not provided with O ring 76, can prevent that also flowing into the gas that sucks paths 40 from suction pipe 42 spills between the outer circumferential face of the inner peripheral surface of sealed member 72 and columnar portion 71, can when guaranteeing sealability, seek the simplification of sealing mechanism S.In addition, in Fig. 9, though only show the sealed member 72 of suction path 40 sides that embed cylinder 23, the sealed member 72 of present embodiment also is embedded into access 51 sides of cylinder 23.

-Di 2 embodiments' variation 2-

In above-mentioned the 2nd embodiment, though by spring 75 with sealed member 72 by the outer side surface that is pressed in cylinder 23, also can replace spring 75, push by O ring 77, as shown in figure 10.At this moment, utilize O ring 77 recuperability during resiliently deformable on deformation direction, with sealed member 72 by on the sealing surface in the outer side surface that is pressed in cylinder 23.

And O ring 77 is bonded in cardinal extremity face and 43 liang of sides of interface unit of sealed member 72.Therefore, can utilize O ring 77, with sealing between sealed member 72 and the interface unit 43 as pressing component.

So, can use the O ring 77 that generally is widely used that sealed member 72 is bonded on the sealing surface.The cost that consequently can suppress compressor 1 on one side increases, Yi Bian positively with sealing between cylinder 23 and the interface unit 43.

-Di 2 embodiments' variation 3-

In above-mentioned the 2nd embodiment, though O ring 76 is embedded among interior all ditch 72a of sealed member 72, also can replace it, adopt following structure.That is to say, as shown in figure 11, also sealed member 72 can be formed simple cylindricly, periphery ditch 71a is set, ring portion 78 is embedded this periphery ditch 71a at the outer circumferential face of columnar portion 71.

In this variation, sealed member 72 is a metallic.And, the section of sealed member 72 is formed tetragonal ring-type.That is to say that sealing parts 72 form extend cylindric than what lack on the axle direction of interface unit 43.Sealed member 72, its internal diameter is a bit larger tham the external diameter of columnar portion 71.In addition, the sealed member 72 of this variation is formed simple cylindric, all ditch 72a in sealing parts 72, not being provided with.

And the part that the inner peripheral surface with sealed member 72 in the outer circumferential face of columnar portion 71 faces toward is along its whole week being formed with periphery ditch 71a.This periphery ditch 71a is formed on two places of columnar portion 71.Metallic ring portion 78 is embedded in each of two periphery ditch 71a.The shape of this ring portion 78 is the same with the shape of piston ring in being used in motors such as automobile.That is to say that the structure of ring portion 78 is, form the shape that the part of annulus has been excised, make it because of externally applied forces resiliently deformable on its diametric(al).

Embed the ring portion 78 of above-mentioned periphery ditch 71a, sealed on every side parts 72 surround, and become towards diametric(al) to be compressed, and become the state of resiliently deformable.Utilization make ring portion 78 self towards the recuperability of diametric(al) expansion with this outer circumferential face of the ring portion 78 of resiliently deformable by the inner peripheral surface that is pressed in sealed member 72.And the ring portion 78 by will embedding periphery ditch 71a is by the inner peripheral surface that is pressed in sealed member 72, with the clearance seal of columnar portion 71 and sealed member 72.

In addition, above-mentioned sealed member 72 also can be formed by resin, carbon or potteries etc. such as teflon, polyphenylene speed hardened resin, amide resin, polyether ketone resin and carbolic acid resins.And ring portion 78 also can be formed by resins such as teflon, polyphenylene speed hardened resin, amide resin, polyether ketone resin and carbolic acid resins.And ring portion 78 also can be by constituting at the material of the inboard above-mentioned resin different with outside applying and the material that applied above-mentioned resin in the metal surface.

And, in Figure 11, in columnar portion 71, forming two periphery ditch 71a though show, the situation with ring portion 78 each periphery ditch of embedding 71a is not limited thereto, and also can only form a periphery ditch 71a, and ring portion 78 is embedded this periphery ditch 71a.

In the present embodiment, utilize make the ring portion 78 that embeds periphery ditch 71a towards the recuperability of its diametric(al) expansion with it by the inner peripheral surface that is pressed in sealed member 72, with the clearance seal of columnar portion 71 and sealed member 72.Therefore, according to present embodiment, by constituting sealing mechanism S by periphery ditch 71a and ring portion 78, can be positively with sealing between columnar portion 71 and the sealed member 72.

And, in the present embodiment, between metallic ring portion 78 and metallic sealed member 72, produce surface friction drag.And for example O is encircled when embedding periphery ditch 71a, surface friction drag takes place between rubber system O ring and metallic sealed member 72.And the surface friction drag of metal and metal is less than the surface friction drag of metal and rubber.So the surface friction drag of metallic sealed member 72 and metallic ring portion 78 is less than the surface friction drag that encircles with rubber system O.Therefore, according to present embodiment, can make compressing mechanism 20 along with the vibration of compressing mechanism 20 ring portion during displacement 78 less with the slip resistance of sealed member 72, can more positively make the and then displacement of compressing mechanism 20 of sealed member 72.And, can guarantee the displacement degrees of freedom of compressing mechanism 20, reduce the vibration of passing to seal container 10 from compressing mechanism 20.

(the 3rd embodiment)

The 3rd embodiment of the present invention, for a change above-mentioned the 1st embodiment's the embodiment of compressor arrangement.Here, the difference to present embodiment and above-mentioned the 1st embodiment is illustrated.

As Figure 12 and shown in Figure 13, in the compressor 1 of present embodiment, block part 46, suction pressure chamber 50 and access 51 have been omitted.And in the present embodiment, the shape of interface unit 43 is different with above-mentioned the 1st embodiment.

Form the interface unit 43 of present embodiment cylindric.One end of suction pipe 42 is inserted the terminal side that is fixed on the penetration hole 43a that is arranged on interface unit 43.Be arranged on the interface side patchhole 11a of the body 11 of seal container 10, compare with compressing mechanism 20, its lower end is higher, and its upper end is lower.Interface unit 43, only that its front end is identical with the thickness of body 11 length is inserted interface side patchhole 11a, and the outer circumferential face of this interface unit 43 is connecting side patchhole 11a along whole all weldings.And the front-end face shape of interface unit 43 becomes the curved surface that conforms to the inner peripheral surface shape of seal container 10.And, the front-end face of interface unit 43, the part of the inner peripheral surface of formation seal container 10.

The cylinder 23 of compressing mechanism 20 is formed the cylindrical shape that its external diameter is slightly smaller than the internal diameter of seal container 10.And compressing mechanism 20 is that the outer circumferential face of cylinder 23 is along the appearance relative with the inner peripheral surface of seal container 10 of whole week.That is to say, between the inner peripheral surface of the outer circumferential face of cylinder 23 and seal container 10, be formed with narrower annular gap.And the opening portion of the suction path 40 in the outer circumferential face of cylinder 23 is shaped as the curved surface that conforms to the outer circumferential face shape of cylinder 23.And, between the inner peripheral surface of opening portion that sucks path 40 and seal container 10, be formed with narrower gap.In addition, be provided with a plurality ofly in order to allow from the way to cycle oil 29 that passes through of refrigerator oil of ejection gas separation at cylinder 23, this way to cycle oil 29 runs through cylinder 23 on axle direction.

Outer circumferential face at above-mentioned cylinder 23 is formed with chase 23c along its whole week.This chase 23c respectively forms one up and down cylinder 23.Wherein the chase 23c of upside is formed on the position that is higher than the opening portion that sucks path 40, and its lower end is positioned at position roughly the same with the upper end of interface side patchhole 11a or that go up slightly.Downside chase 23c is formed on than the low position of opening portion that sucks path 40, its upper end be positioned at the lower end of interface side patchhole 11a roughly the same or slightly under the position.

In above-mentioned two chase 23c, embedding respectively has O ring 79.O ring 79, its thickness is greater than the degree of depth of chase 23c.And, the inner face two sides bonding of the bottom surface of the chase 23c in O ring 79 and the cylinder 23 and seal container 10, and become by the state of cylinder 23 and seal container 10 folder distortion.And, by making O ring 79 and cylinder 23 and 10 liang of side's bondings of seal container, with the clearance seal of cylinder 23 and seal container 10.And, owing to so in advance O is encircled 79 compressive strains, even therefore cylinder 23 displacements in the running of compressor 1 also can encircle O 79 and remain on the state that bonds with cylinder 23 and 10 liang of sides of seal container.

In the present embodiment, sealing mechanism S is made of chase 23c that forms in cylinder 23 and embedding O ring 79 wherein.Be formed with low-voltage space 81 in the quilt spaces that O ring 79 is isolated up and down in the gap of the inner peripheral surface of the outer circumferential face of cylinder 23 and seal container 10.This low-voltage space 81 goes out from being full of the inner space zoning that sprays the seal container 10 of gas, and is communicated to suction path 40 and suction pipe 42.And the sealing of low-voltage space 81 is kept by the O ring 79 that is bonded in cylinder 23 and seal container 10.

In the present embodiment, by suction pipe 42 the suction gas of low pressure is imported to the suction path 40 of compressing mechanism 20.Here, suppose to think to be in the state that sprays on suction path 40 entire portion in addition of gas pressure in the outer circumferential face of compressing mechanism 20, then under this state, act on the air pressure heterogeneity of the radial direction of compressing mechanism 20.And, if compressing mechanism 20 is pressed to suction path 40 sides, touch seal container 10 because of air pressure, then can not interdict the vibration that passes to seal container 10 from this compressing mechanism 20 fully.

As mentioned above, in the present embodiment, be formed with low-voltage space 81 whole week in the gap of the inner peripheral surface of the outer circumferential face of compressing mechanism 20 and seal container 10.That is to say, the interior pressure of low-voltage space 81, promptly suck gas pressure on the whole week of the outer circumferential face of compressing mechanism 20.Therefore, the gas pressure of homogeneous is on the radial direction of compressing mechanism 20, and compressing mechanism 20 can not be subjected to the influence of air pressure.So, can hinder because of air pressure makes compressing mechanism 20 towards the displacement that sucks path 40 sides, can prevent that this compressing mechanism 20 from touching seal container 10, more positively interdicts the vibration of passing to seal container 10 from compressing mechanism 20.

In the present embodiment, sealing mechanism S is made of chase 23c in the cylinder 23 that is formed on compressing mechanism 20 and embedding O ring 79 wherein.Therefore, according to present embodiment, even compressing mechanism 20 displacement along with the vibration of compressing mechanism 20 also can make O ring 79 slide with respect to the inner peripheral surfaces of seal container 10, can be positively with the clearance seal of compressing mechanism 20 and seal container 10.And can be enough simple structure realizes sealing mechanism S, can suppress to be accompanied by the setting of sealing mechanism S and the cost of the compressor that causes increases.

And, in the present embodiment, form way to cycle oil 29 at compressing mechanism 20.Here, in seal container 10, clipping space that compressing mechanism 20 will be full of the space of ejection gas and retain refrigerator oil, to be arranged on the situation of an opposite side more.And, when in compressing mechanism 20, way to cycle oil 29 not being set, probably can remain in the space that has been full of ejection gas from the refrigerator oil of gas separation, cause the refrigerator oil deficiency, the phenomenon of compressing mechanism 20 insufficient lubrications.

On the other hand, in the present embodiment,, therefore can the space of refrigerator oil will be retained by way to cycle oil 29 guiding from the refrigerator oil of gas separation owing in compressing mechanism 20, be formed with way to cycle oil 29.So, according to present embodiment,, remain in the structure that a refrigerator oil in the space sprays to another space even be spaced in the seal container 10, also can prevent the deficiency of refrigerator oil, can avoid the insufficient lubrication of compressing mechanism 20.And,, the pressure in the seal container 10 can be remained homogeneous by way to cycle oil 29 is set.

-Di 3 embodiments' variation-

In above-mentioned the 3rd embodiment, also can change the structure of compressor 1.Here, the point different with above-mentioned the 3rd embodiment for this variation is illustrated.

As shown in figure 14, in this variation, be formed with two chase 23c up and down respectively at cylinder 23.The lower side of height among two chase 23c, the 23c of upside is formed on the position that is higher than the opening portion that sucks path 40, and its lower end is positioned at position roughly the same with the upper end of interface side patchhole 11a or that go up slightly.The higher side of height among two chase 23c, the 23c of downside is formed on the position that is lower than the opening portion that sucks path 40, its upper end be positioned at the lower end of interface side patchhole 11a roughly the same or slightly under the position.

Metallic ring portion 80 is embedded each of above-mentioned a plurality of chase 23c, 23c.The shape of this ring portion 80 is the same with the shape of piston ring on being used in motors such as automobile.That is to say that the structure of ring portion 80 is, form the shape of a part of having excised annulus, by applying external force on its diametric(al) resiliently deformable.

Embed the ring portion 80 of above-mentioned chase 23c, be sealed container 10 on every side and surround, be compressed, become the state of resiliently deformable towards diametric(al).Utilization make ring portion 80 self towards the recuperability of diametric(al) diffusion with this resiliently deformable the outer circumferential face of ring portion 80 by the inner peripheral surface that is pressed in seal container 10.And the ring portion 80 by will embedding chase 23c is by the inner peripheral surface that is pressed in seal container 10, with the clearance seal of cylinder 23 and seal container 10.

In addition, above-mentioned ring portion 80 also can pass through resins formation such as teflon, polyphenylene speed hardened resin, amide resin, polyether ketone resin and carbolic acid resin.And ring portion 78 also can be by constituting at the material of the inboard above-mentioned resin different with outside applying and the material that applied above-mentioned resin in the metal surface.

And, in Figure 14, form two chase 23c up and down respectively at cylinder 23 though show, ring portion 80 is embedded the situation of each chase 23c, but be not limited thereto, also can cylinder 23 form a chase 23c up and down respectively, ring portion 80 is embedded among each chase 23c.

In this variation, sealing mechanism S is made of the chase 23c of the cylinder 23 that is formed on compressing mechanism 20 and the ring portion 80 that embeds wherein.And, utilize make the ring portion 80 that embeds chase 23c towards the recuperability of its diametric(al) expansion and with it by the inner peripheral surface that is pressed in seal container 10, with the clearance seal of cylinder 23 and seal container 10.Therefore, according to this variation, even compressing mechanism 20 displacement along with the vibration of compressing mechanism 20 also can make ring portion 80 slide with respect to the inner peripheral surface of seal container 10, can be positively with the clearance seal of compressing mechanism 20 and seal container 10.

And, in this variation, between metallic ring portion 80 and metallic seal container 10, produce surface friction drag.And for example O is encircled when embedding among the chase 23c, surface friction drag produces between rubber system O ring and metallic seal container 10.And the surface friction drag of metal and metal is less than the surface friction drag of metal and rubber.Therefore, the surface friction drag of metallic seal container 10 and metallic ring portion 80 is less than the surface friction drag that encircles with rubber system O.So, according to this variation, can reduce compressing mechanism 20 ring portion 80 during displacement and slip resistance of seal container 10 along with the vibration of compressing mechanism 20, can be more positively with the clearance seal of compressing mechanism 20 and seal container 10.

(other embodiment)

-Di 1 variation-

Though in above-mentioned the 1st～the 3rd embodiment, show the present invention is useful in blade 25b and piston 25 are formed as one, at the example that shakes piston type rotary compressor 1 that cylinder 23 inner carriers 25 shake, the compressor that still becomes applicable object of the present invention is not limited to the compressor of this form.For example, the present invention can be useful in yet piston and blade-shaped is become one, with the blade front end by in the rolling piston type rotary compressor that is pressed in the piston outer circumferential face.And, also the present invention can be useful in the vortex-type compressor.

-Di 2 variation-

In above-mentioned the 3rd embodiment, the outer side surface formation chase 23c at cylinder 23 embeds O ring 79 or ring portion 80 among this chase 23c.But be not limited thereto, also can form chase (not illustrating among the figure), O ring 79 or ring portion 80 are embedded this chase at the inner face of seal container 10.In this variation, the part that the chase with seal container 10 in the outer circumferential face of cylinder 23 faces toward constitutes sealing surface.And sealing mechanism S is made of chase that is formed on seal container 10 and embedding O ring 79 or ring portion 80 wherein.

(practicality)

As mentioned above, hermetic type compressor involved in the present invention is for compressing mechanism and electronic Useful when machine is housed in the closed container, particularly be applicable to compressing mechanism and motor elasticity are propped up Support is in closed container the time.

Claims (24)

1, a kind of compressor, comprise: the cylindric seal container (10) that has connected suction pipe (42) and spraying pipe (14), the gas that compression sucks from above-mentioned suction pipe (42) also sprays to compressing mechanism (20) in the seal container (10), be connected to the motor (30) of the live axle (31) of this compressing mechanism (20), be accommodated in the interior compressing mechanism (20) of above-mentioned seal container (10) and the elastic support member (65) of motor (30) with support, it is characterized in that:

In above-mentioned compressor structure (20), form and run through this compressing mechanism (20), at the suction path (40) of the outer side surface opening of this compressing mechanism (20) towards radial direction;

The opening portion that above-mentioned suction pipe (42) is set to the suction path (40) in the outer side surface of its terminal and above-mentioned compressor structure (20) faces toward;

The peripheral part of the suction path (40) in the outer side surface of above-mentioned compressor structure (20), and any one party formation sealing surface of the part of the inner face of the above-mentioned seal container (10) that faces toward with this peripheral part;

Be provided with the sealed member (45) that has by being pressed on the above-mentioned sealing surface,, connect the sealing mechanism (S) of above-mentioned suction pipe (42) and suction path (40) by clearance seal with above-mentioned compressor structure (20) and seal container (10).

2, compressor according to claim 1 is characterized in that:

The part of the inner face of the seal container (10) that faces toward with the peripheral part of suction path (40) in the outer side surface of above-mentioned compressor structure (20) constitutes sealing surface;

In above-mentioned compressor structure (20), form the circular chase (23a) of the opening portion that centers on the suction path (40) in its outer side surface;

The structure of above-mentioned sealed member (45) is, forms ring-type, embeds in the above-mentioned chase (23a), and clipped resiliently deformable by bottom surface of this chase (23a) and above-mentioned sealing surface;

Above-mentioned chase (23a) and sealed member (45) constitute sealing mechanism (S).

3, compressor according to claim 2 is characterized in that:

Above-mentioned sealed member is an O ring (45).

4, compressor according to claim 2 is characterized in that:

The structure of above-mentioned sealed member (70) is that section forms the U word shape, resiliently deformable on thickness direction.

5, compressor according to claim 1 is characterized in that:

Above-mentioned seal container (10) comprises interface unit (43), and the peripheral part of the suction path (40) in the outer side surface of front-end face and compressing mechanism (20) faces toward, and at terminal side suction pipe (42) is installed;

The peripheral part of the suction path (40) in the outer side surface of above-mentioned compressor structure (20) constitutes sealing surface;

Above-mentioned interface unit (43), its forward end partly forms cylindric, constitutes columnar portion (71);

Above-mentioned sealed member (72), section forms tetragonal ring-type, has play ground to embed above-mentioned columnar portion (71);

Be provided with at above-mentioned sealing mechanism (S) pressing force is acted on the sealing parts (72), so that the front-end face of sealed member (72) pushes up the pressing component (75) of above-mentioned sealing surface.

6, compressor according to claim 5 is characterized in that:

Pressing component is for withstanding on the cardinal extremity face of sealed member (72) and the spring (75) of interface unit (43).

7, compressor according to claim 6 is characterized in that:

Above-mentioned sealed member (72), the outer circumferential face sliding contact of the whole week of inner peripheral surface and columnar portion (71).

8, compressor according to claim 5 is characterized in that:

In above-mentioned sealed member (72), along the interior all ditches (72a) that form in whole week of inner circumferential surface;

In above-mentioned sealing mechanism (S), be provided with and embed in above-mentioned interior all ditches (72a) the O ring (76) that contacts with the outer circumferential face of columnar portion (71).

9, compressor according to claim 5 is characterized in that:

Above-mentioned pressing component is to withstand on the cardinal extremity face of sealed member (72) and the O ring (77) of interface unit (43).

10, compressor according to claim 1 is characterized in that:

Above-mentioned seal container (10) comprising: the cylindric body (11) of Yan Shening, the top runner plate (12) that the upper end of this body (11) is blocked and the bottom runner plate (13) that the lower end of this body (11) is blocked up and down;

Above-mentioned top runner plate (12), its underpart embeds the inboard of body (11);

In the compressing mechanism (20) or motor (30) that support by above-mentioned elastic support member (65), be provided with the lower end of pushing up above-mentioned top runner plate (12), the blocking portion (32a) of the displacement amount of limit compression mechanism (20) and motor (30).

11, compressor according to claim 1 is characterized in that:

In above-mentioned seal container (10), compressing mechanism (20) is set in the below of motor (30);

Above-mentioned compressor structure (20) is fixed on the elastic support member (65) by plate-like support member (61), and in order to compressed gas is sprayed to the lower aperture of the interior ejiction opening (57) of seal container (10) in compressing mechanism (20);

The structure of above-mentioned supporting part (61) is to cover the opening portion of the following ejiction opening (57) of compressing mechanism (20).

12, compressor according to claim 5 is characterized in that:

In above-mentioned sealing mechanism (S), be formed with periphery ditch (71a) whole week along the outer circumferential face of columnar portion (71), the ring portion (78) of shape that has excised the part of annulus is embedded above-mentioned periphery ditch (71a), the above-mentioned ring portion (78) that utilization makes resiliently deformable towards the recuperability of its diametric(al) expansion with the outer circumferential face of this ring portion (78) by the inner peripheral surface that is pressed in sealed member (72), with the clearance seal of above-mentioned columnar portion (71) and sealed member (72).

13, compressor according to claim 12 is characterized in that:

Above-mentioned sealed member (72) and ring portion (78) all are metallic.

14, compressor according to claim 1 is characterized in that:

Comprise: pressure difference is eliminated mechanism (52), makes to suck gas pressure on compressing mechanism (20), to reduce the pressing force that acts on suction path (40) direction on the compressing mechanism (20) because of the ejection gas in the above-mentioned seal container (10).

15, compressor according to claim 14 is characterized in that:

Above-mentioned compressor structure (20) is made of the rotary type fluid machine that forms pressing chamber (22) between the outer circumferential face of the inner peripheral surface of cylinder (23) and piston (25);

Above-mentioned pressure difference is eliminated mechanism (52), allows the outer side surface that sucks the cylinder (23) of gas pressure in above-mentioned compressor structure (20).

16, compressor according to claim 15 is characterized in that:

Above-mentioned pressure difference is eliminated mechanism (52), allow suck gas pressure in the outer side surface of cylinder (23) with suck the opposite side of path (40).

17, compressor according to claim 15 is characterized in that:

Above-mentioned pressure difference is eliminated mechanism (52), comprise suction pressure chamber (50) and access (51), wherein, this suction pressure chamber (50) zoning between the outer side surface of the inner face of seal container (10) and cylinder (23) forms, and this access (51) makes this suction pressure chamber (50) be communicated with the suction path (40) of compressing mechanism (20); Allow the gas pressure of above-mentioned suction pressure chamber (50) on cylinder (23).

18, compressor according to claim 17 is characterized in that:

The access (51) that above-mentioned pressure difference is eliminated mechanism (52) is formed in the cylinder (23).

19, compressor according to claim 17 is characterized in that:

Above-mentioned pressure difference is eliminated the access (51) of mechanism (52), form along the inner peripheral surface of cylinder (23) extend circular-arc.

20, a kind of compressor, comprise: the cylindric seal container (10) that has connected suction pipe (42) and spraying pipe (14), the gas that compression sucks from above-mentioned suction pipe (42) also sprays to compressing mechanism (20) in the seal container (10), be connected to the motor (30) of the live axle (31) of this compressing mechanism (20), be accommodated in the interior compressing mechanism (20) of above-mentioned seal container (10) and the elastic support member (65) of motor (30) with support, it is characterized in that:

Above-mentioned compressor structure (20), its profile are cylindric, and suck path (40) at its outer circumferential face opening;

Above-mentioned suction pipe (42), the opening portion that is set to the above-mentioned suction path (40) in the outer circumferential face of its terminal and above-mentioned compressor structure (20) faces toward;

Comprise sealing mechanism (S), in order in the gap of the inner peripheral surface of the outer circumferential face of the above-mentioned compressor structure (20) that faces toward mutually and above-mentioned seal container (10), to form the low-voltage space (81) that is communicated with above-mentioned suction path (40) and above-mentioned suction pipe (42).

21, compressor according to claim 20 is characterized in that:

In above-mentioned sealing mechanism (S), will be provided with one at least respectively along the opening portion both sides of O ring (79) the suction path (40) in this outer circumferential face in whole week of the outer circumferential face of compressing mechanism (20).

22, compressor according to claim 20 is characterized in that:

In the outer circumferential face of above-mentioned compressor structure (20), will form one at least respectively in the opening portion both sides that suck path (40) along the chase (23c) in its whole week;

Above-mentioned sealing mechanism (S) comprises above-mentioned chase (23c) and forms the shape of the part of annulus excision and embed ring portion (80) in this chase (23c);

Utilization make above-mentioned resiliently deformable above-mentioned ring portion (80) towards the recuperability of its diametric(al) expansion with the outer circumferential face of this ring portion (80) by the inner peripheral surface that is pressed in seal container (10), with the clearance seal of above-mentioned compressor structure (20) and seal container (10).

23, compressor according to claim 22 is characterized in that:

The material property of above-mentioned ring portion (80) is a metal.

24, compressor according to claim 20 is characterized in that:

In above-mentioned compressor structure (20), be formed with the way to cycle oil (29) that on axle direction, runs through this compressing mechanism (20).

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