CN100467869C

CN100467869C - Compressor

Info

Publication number: CN100467869C
Application number: CNB2005101071734A
Authority: CN
Inventors: 西川刚弘; 小笠原弘丞; 金山孝男; 比留间义明; 竹中学; 坂庭正纯; 桥本彰; 铃木淳一
Original assignee: Sanyo Electric Co Ltd
Current assignee: Sanyo Electric Co Ltd
Priority date: 2004-09-30
Filing date: 2005-09-28
Publication date: 2009-03-11
Anticipated expiration: 2025-09-28
Also published as: EP1643127A2; CN1755117A; EP1643127A3; JP2006097619A

Abstract

An object is to provide a highly efficient compressor while improving a refrigerant leakage, enhancing a performance of a compressor, improving durability, and enhancing reliability. The compressor comprises: a compression element comprising a cylinder in which a compression space is constituted; a suction port and a discharge port which communicate with the compression space in the cylinder; a support member which closes an opening of the cylinder; a rotary shaft which is rotatably supported by a main bearing as a bearing formed on the support member; a compression member whose one surface crossing an axial direction of the rotary shaft is inclined continuously between a top dead center and a bottom dead center and which is disposed in the cylinder to be rotated by the rotary shaft and which compresses a fluid sucked from the suction port to discharge the fluid via the discharge port; a vane which is disposed between the suction port and the discharge port to abut on one surface of the compression member and which partitions the compression space in the cylinder into a low pressure chamber and a high pressure chamber; and a shaft seal which is disposed on an end portion of the bearing (main bearing) on a side opposite to the compression member and which abuts on the rotary shaft.

Description

Compressor

Technical field

The present invention relates to compress, discharge the compressor of fluids such as refrigerant and air.

Background technique

Up to now, for example in refrigerating machine, adopt, make refrigerant circuit mode in the loop by the compressor compresses refrigerant.As the form of this compressor, the rotation compressor (for example opening flat 5-99172 communique with reference to the spy, (document 1)) that is called as rotary compressor and scroll compressor, screw compressor are arranged.

Above-mentioned rotation compressor has relatively simple for structure, advantage of low manufacturing cost, and vibration and the big problem of cogging are arranged.In addition, scroll compressor and screw compressor, though cogging is little,, have be difficult to process, problem that cost is high.

Therefore, also developed the mode of compressed fluid with blade (vane) division compression volume.The swash plate as compression member of rotation promptly is set, at this compression volume of formation up and down (as with reference to special table 2003-532008 communique (document 2)) of this swash plate in cylinder.According to the compressor of this mode, has advantage relatively simple for structure, as can to constitute the little compressor of vibration.

, in the structure as above-mentioned document 2,, therefore,, has the inefficient problem that coolant leakage causes because height pressure reduction increases owing in entire cylinder, forming hyperbaric chamber and low pressure chamber the form of adjoining up and down in compression member (swash plate).

The refrigerant that has taken place especially to be formed in the compression volume on the face that becomes the driving of compression member key element leaks between the bearing of rotatingshaft and this rotatingshaft easily, causes the problem of the decreased performance of compressor.

And then, in the existing structure that constitutes compression volume up and down of compression member, owing to can not control the back pressure of compression volume, so compression member produces friction with the parts of relative blade that contacts with this compression member and compression member setting, therefore the compression member noticeable wear produces the problem that durability worsens, mechanical loss strengthens.

Summary of the invention

The present invention forms in order to solve the prior art problem, and it improves compressor performance with leakage, the realization that improves refrigerant is purpose.

And the present invention also improves reliability and high efficiency compressor is provided with durability, the realization that improves compressor is purpose.

The compressor of first aspect present invention comprises: the compression key element, and it is made of the cylinder that constitutes compression volume in inside; Suction port and exhaust port, its with cylinder in compression volume be communicated with; Supporting member, the opening of its inaccessible cylinder; Rotatingshaft, it is supported on the bearing that is formed on this supporting member and rotates; Compression member, wherein, the axial compressing surface that intersects the also inclination continuously between top dead center and lower dead center with this rotatingshaft is configured in the cylinder simultaneously, drives with rotatingshaft and rotates, and compression is discharged from the fluid of suction port suction and from exhaust port; Blade, it is configured between suction port and the exhaust port, contacts with the compressing surface of compression member, and the compression volume in the cylinder is divided into low pressure chamber and hyperbaric chamber; The sealing of axle envelope, the bearing end that it is located at the compression member opposition side contacts with rotatingshaft.

According to a first aspect of the invention, since with the bearing end of compression member opposition side on be provided with the axle envelope that contact with rotatingshaft and seal, be sealed in by this envelope on the inner face of bearing and seal fully, can avoid the fault of the gas leakage that produces by the space between rotatingshaft and the bearing in advance.

Therefore, can improve volumetric efficiency, realize improving compressor performance.

The compressor of second aspect present invention comprises: the compression key element, and it is made of the cylinder that constitutes compression volume in inside; Suction port and exhaust port, its with cylinder in compression volume be communicated with; Supporting member, the opening of its inaccessible cylinder; Rotatingshaft, it is supported on the bearing that is formed on this supporting member and rotates; Compression member, wherein, the axial compressing surface that intersects the also inclination continuously between top dead center and lower dead center with this rotatingshaft is configured in the cylinder simultaneously, drives with rotatingshaft and rotates, and compression is discharged from the fluid of suction port suction and from exhaust port; Blade, it is configured between suction port and the exhaust port, contacts with the compressing surface of compression member, and the compression volume in the cylinder is divided into low pressure chamber and hyperbaric chamber; Piston ring seal, it is located on the rotatingshaft with the bearing corresponding position.

The compressor of third aspect present invention is located at described piston ring seal on the rotatingshaft of the position corresponding with the bearing end of compression member compressing surface side.

According to a second aspect of the invention, owing on the rotatingshaft of the position corresponding, be provided with piston ring seal, can avoid fault in advance by the gas leakage of the generation of the space between rotatingshaft and the bearing with bearing.

As a third aspect of the present invention, because described piston ring seal is located on the rotatingshaft of the position corresponding with the bearing end of compression member compressing surface side, reduced the slippage loss of bearing end and realized improving volumetric efficiency simultaneously, can improve performance by improving sealing.

Because being provided with a plurality of piston ring seals can make sealing further improve.

The compressor of fourth aspect present invention has the driving key element that is placed in the seal container and with the shaft-driven compression key element of the rotation of this driving key element.

This compression key element comprises: cylinder, and portion constitutes compression volume within it; Suction port and exhaust port, its with this cylinder in compression volume be communicated with; Compression member, wherein and the axial compressing surface that intersects this rotatingshaft continuously and tilt, are configured in simultaneously in the cylinder and rotate between top dead center and lower dead center, and compression is discharged in the seal container by exhaust port from the fluid that suction port sucks; Blade, it is configured between suction port and the exhaust port and contacts with the compressing surface of compression member, and the compression volume in the cylinder is divided into low pressure chamber and hyperbaric chamber.This compressor is made as the force value of compression member compression opposing face side lower than the pressure in the seal container.

According to a forth aspect of the invention, lower owing to the force value of the compression opposing face of compression member is made as than the pressure in the seal container, so compression member can alleviate the power of being pushed the compressing surface side by the pressure of compression opposing face side.Wherein said compression opposing face becomes the opposition side of the compression member compressing surface that constitutes compression volume.

Therefore, can improve the durability of compression member, reduce mechanical loss, improve reliability.

Description of drawings

Fig. 1 is the vertical profile profile of the compressor of the first embodiment of the present invention;

Fig. 2 is another vertical profile side figure of compressor of the present invention;

Fig. 3 is the stereogram of compression key element of the compressor of Fig. 1;

Fig. 4 is another stereogram of compression key element of the compressor of Fig. 1;

Fig. 5 is the plan view of compression key element of the compressor of Fig. 1;

Fig. 6 is the worm's eye view of compression key element of the compressor of Fig. 1;

Fig. 7 is the side view of the rotatingshaft that comprises compression member of the compressor of Fig. 1;

Fig. 8 is first stereogram of compression member of the compressor of Fig. 1;

Fig. 9 is second stereogram of compression member of the compressor of Fig. 1;

Figure 10 is the 3rd stereogram of compression member of the compressor of Fig. 1;

Figure 11 is the 4th stereogram of compression member of the compressor of Fig. 1;

Figure 12 is the 5th stereogram of compression member of the compressor of Fig. 1;

Figure 13 is the 6th stereogram of compression member of the compressor of Fig. 1;

Figure 14 is the inclination enlarged view when representing to see from the side compression member top of compressor of Fig. 1;

Figure 15 is the rotatingshaft and the vertical profile profile that compresses key element of the compressor of Fig. 1;

Figure 16 is the stereogram of rotatingshaft of state that the cylinder of Figure 15 is installed;

Figure 17 is another vertical profile profile of compression key element of the compressor of Fig. 1;

Figure 18 is the compressing surface and the material of the parts of this bearing surface and blade and the table of processing method thereof that expression is used for compression member;

Figure 19 is the vertical profile profile of compression key element of the compressor of the second embodiment of the present invention;

Figure 20 is the stereogram of compression key element of the compressor of Figure 19;

Figure 21 is the vertical profile profile of the compressor of the third embodiment of the present invention;

Figure 22 is another vertical profile profile of the compressor of Figure 21;

Figure 23 is another vertical profile profile of the compressor of Figure 21;

Figure 24 is the vertical profile profile of the compressor of the fourth embodiment of the present invention;

Figure 25 is another vertical profile profile of the compressor of Figure 24;

Figure 26 is another vertical profile profile of the compressor of Figure 24;

Figure 27 is the vertical profile profile of the compressor of the fifth embodiment of the present invention;

Figure 28 is another vertical profile profile of the compressor of Figure 27;

Figure 29 is another vertical profile profile of the compressor of Figure 27.

Embodiment

Below, the mode of execution that present invention will be described in detail with reference to the accompanying.In addition, later on each embodiment's of explanation compressor C for example, constitutes the refrigerant loop of refrigerating machine, and effect is that suction and compression refrigerant, row are in the loop.

(embodiment 1)

Fig. 1 represents the vertical profile profile of the compressor C of the first embodiment of the present invention, Fig. 2 represents another vertical profile profile, Fig. 3 represents the stereogram of the compression key element 3 of compressor C, Fig. 4 represents another stereogram of the compression key element 3 of compressor C, Fig. 5 represents the plan view of the compression key element 3 of compressor C, and Fig. 6 represents the worm's eye view of the compression key element 3 of compressor C.In each figure, the 1st, seal container drives key element 2 and is incorporated in upside in this seal container 1, drive the compression key element 3 of rotatingshaft 5 drivings of key element 2 at underside contain by this.

Driving key element 2 is motor, and it comprises: be fixed in the inwall of seal container 1, the stator 4 of stator coils wound; Be positioned at the inboard of this stator 4, have the rotor 6 of rotatingshaft 5 in central authorities.In addition, drive formation between peripheral part and the seal container 1 of stator 4 of key element 2 at this and be communicated with up and down everywhere gap 10.

Compression key element 3, be installed on by the supporting member 7 of the inwall that is fixed in seal container 1, with bolt the downside of this supporting member 7 cylinder 8, be disposed at compression member described later 9 in this cylinder 8, blade 11, expulsion valve 12, the secondary supporting member 22 etc. that is installed on the downside of cylinder 8 with bolt constitutes.In the upper central portion of supporting member 7, the concentric protruding upward and main bearing 13 of formation rotatingshaft 5 in shape ground.In addition, central part below, with the projecting member 14 of bolt concentric cylindrical, the following 14A of this projecting member 14 forms even surface.That is, supporting member 7 is by the master unit on the inwall that is fixed in seal container 1 15, constitute at the main bearing 13 that protrudes above the master unit 15 and with the projecting member 14 of bolt below master unit 15.

In the projecting member 14 of supporting member 7, form groove 16, in this groove 16, up and down reciprocatingly insert above-mentioned blade 11 freely movably.Back pressure chamber 17 is formed at the top at this groove 16, and it is used for the high pressure in the seal container 1 is put on blade 11 as back pressure, and simultaneously, the pressured means helical spring 18 above the blade 11 is pushed in configuration downwards in groove 16.

And the upper shed portion of cylinder 8 is by above-mentioned supporting member 7 sealings, and like this, (cylinder 8 inside between the projecting member 14 of above-mentioned compression member 9 and supporting member 7) constitute compression volume 21 in these cylinder 8 inside.In addition, in cylinder 8, form and suck path 24, simultaneously, suction pipe 26 is installed on seal container 1 and is connected in suction path 24.On cylinder 8, form suction port 27 and the exhaust port 28 that is communicated with compression volume 21; Suck path 24 and be communicated with suction port 27, exhaust port 28 is communicated with in the side of cylinder 8 and seal container 1.In addition, above-mentioned blade 11 is between this suction port 27 and exhaust port 28.

Above-mentioned rotatingshaft 5 is supported on main bearing 13 that is formed on supporting member 7 and the supplementary bearing 23 that is formed on secondary supporting member 22 and rotation.That is, rotatingshaft 5 passes the central authorities of above-mentioned supporting member 7, cylinder 8 and secondary supporting member 22, rotates the central part of ground axle suspension above-below direction freely by main bearing 13, and simultaneously, ground axle suspension is freely rotated with the supplementary bearing 23 of secondary supporting member 22 in the below.And compression member 9 forms one with the bottom of the rotatingshaft 5 that links to each other, and is disposed in the cylinder 8.

Above-mentioned compression member 9 is disposed in the cylinder 8 as above-mentioned, is driven by rotatingshaft 5 and rotates, be used to compress the fluid (is refrigerant at present embodiment) that sucks from suction port 27, in seal container 1, as a whole, be the general cylindrical concentric by exhaust port 28 row with rotatingshaft 5.Fig. 7 represents to comprise the profile of rotatingshaft 5 of the compression member 9 of compressor C, and Fig. 8～Figure 13 represents the stereogram of compression member 9 respectively.As Fig. 7～shown in Figure 13, compression member 9 presents a side thickness portion 31 and the thin portion of another sidewall 32 continuous shape, is formed on wall thickness 31 height with axial top 33 (compressing surfaces) that intersect of rotatingshaft 5, in the low plane of inclination of the thin portion of wall 32.That is 33 present from becoming the highest top dead center 33A through becoming the shape from top dead center 33A to continuous tilt the lower dead center 33B that minimum lower dead center is returned top dead center 33A again.

This compression member 9 top 33 by being the

first surface

34,34 that forms in the predetermined range at center with top dead center 33A and intermediate point 33C between the lower dead center 33B and constituting through top dead center 33A and lower dead center 33B, second

curved surface

35,35 that is connected between each

first surface

34,34.

At this, top 33 shape of compression member 9 is described.Figure 14 launches the figure of connection apart from the line from top dead center 33A to lower dead center 33B of the line 80 of the identical point at the center of rotatingshaft 5.As shown in figure 14, connect the line 80 of the point identical, become straight line 82, become the curve 84 that is gradually to top dead center 33A and lower dead center 33B at second curved surface 35 at first surface 34 apart from the center of rotatingshaft 5.This connects the line 80 of the point identical apart from the center of rotatingshaft 5, forms apart near more steep more, the far away more mild more inclination in the center of rotatingshaft 5, and top 33 set by these lines 80 of compression member 9 constitute.

Above-mentioned curve 84 presents sinusoidal waveform (curve 84A) near top dead center 33A and lower dead center 33B, with the tie point of straight line 82 near, form the curve 84B that connects straight line 82 and sinusoidal waveform profile smoothly.Promptly, the top of the compression member 9 of present embodiment is being to constitute with following curved surface in 0 ° the corner with lower dead center 33B: at 325 °～35 ° and 145 °～215 ° curved surfaces that formed by sinusoidal waveform profile 84A of symmetry with it, at 60 °～120 ° and 240 °～300 ° symmetrical with it first surfaces 34 that form by straight line 82, and connecting 35 °～60 °, 120 °～145 °, 215 °～240 ° and 300 °～325 ° scope of above-mentioned each curved surface, the curved surface that forms by the curve 84B that connects sinusoidal waveform profile 84A and straight line 82 smoothly.The compression member 9 of present embodiment top 33 by forming curved surface by sinusoidal waveform profile 84A and constitute at 60 °～120 °, 240 °～300 ° first surfaces 34 that form by straight line 82 at 325 °～35 °, 145 °～215 °.But the present invention is not limited to the scope of this rotation angle, also can constitute top 33 of compression member 9 by the first surface and second curved surface.Wherein, first surface is being in the predetermined range at center with the intermediate point 33C between top dead center 33A and the lower dead center 33B; Second curved surface through top dead center 33A with lower dead center 33B, be connected 34,34 of each first surfaces

In addition, the gradient that the gradient of first surface 34 compares when gamut is in line line 80 between top dead center 33A and lower dead center 33B is big, and the gradient of the intermediate point when doing to become sinusoidal waveform profile than gamut between top dead center 33A and lower dead center 33B is slow.

Like this, constitute curved surface 34, can carry out top 33 processing of compression member 9 easily, can realize reducing cost by being in line with the line 80 that connects the point identical apart from the center of rotatingshaft 5.In addition, the gradient by making first surface 34 greater than the gamut between top dead center 33A and lower dead center 33B with line 80 gradient during as straight line, can make blade 11 moving along slippage near top dead center 33A and lower dead center 33B.In addition, slow by the gradient of the intermediate point when gamut is as sine wave curve between top dead center 33A and lower dead center 33B, can reduce the slip loss that causes by blade 11.Like this, can improve the performance of compressor C, realize high efficiency of compression.

In addition, the top dead center 33A of this compression member 9, by small gap, to move freely ground relative with the following 14A of the projecting member 14 of supporting member 7.In addition, as mentioned above, blade 11 is disposed between suction port 27 and the exhaust port 28, contacts the top 33 of compression member 9 simultaneously, and the compression volumes 21 in the cylinder 8 are divided into low pressure chamber LR and hyperbaric chamber HR.Above-mentioned helical spring 18 is pressured this blade 11 of 33 sides upward often.

On the other hand, shown in Figure 15～17, the supplementary bearing 23 of (compression opposing face) side below compression member 9 is at the bearing of the opposition side that becomes compression member 9, that is, main bearing 13 ends of the bearing of 33 sides are provided with the axle envelope sealing 50 that contacts rotatingshaft 5 on as compression member 9.This envelope sealing 50 has: cover support part that iron plate forms, contact and seal the contacting part 52 of setting with gap that is formed between this rotatingshaft 5 and the supporting member 7 with rotatingshaft 5 with rubber components such as NBR materials.Be used for to the inside (rotatingshaft 5) pressured spring members in these contacting part 52 installations, contact sliding freely with rotatingshaft 5.In addition, axle envelope sealing 50 top with cover 53 sealings, prevent axle envelope sealing 50 come off (do not have among Fig. 1 and Fig. 2 diagram axle envelope seal 50 and cover 53).In addition, lid 53 usefulness bolt are above supporting member 7.Sealing by by these envelope sealing 50 main bearings that carry out 13 sides fully seals the inner face at main bearing 13, can prevent gas leakage.Like this, can prevent cold media air in the compression volume 21 from the fault of the clearance leakage of the main bearing 13 between rotatingshaft 5 and the supporting member 7, thereby, the long-pending efficient of lid can be changed.Thus, can improve the performance of compressor 1.

The under shed portion of above-mentioned cylinder 8 between (compression opposing face) and the secondary supporting member 22 (back side of compression volume 21), forms space 54 by secondary supporting member 22 sealings below above-mentioned compression member 9.This space 54 is by pressure mean of calculating 55, with 1 interior connection of seal container.This pressure mean of calculating 55 comprises: form along axis direction in secondary supporting member 22, with the hole that is communicated with below 56 of compression member 9; One end is communicated with hole 56, extends the other end and the seal container 1 interior intercommunicating pore 57 that is communicated with from this hole 56 to the outside of secondary supporting member 22 (seal container 1 side) along continuous straight runs; Insert in the other end (with the end that is communicated with in the seal container 1) of this intercommunicating pore 57, form the jet element 58 of micro paths (nozzle) at central part.(Figure 17).

By this pressure mean of calculating 55, in space 54, flow into the refrigerant in the seal container 1.That is, the high pressure refrigerant in the seal container 1 is from jet element 58 inflows of pressure mean of calculating 55, through intercommunicating pore 57, hole 56 inflow spaces 54.At this moment, in the process of the micro paths by being formed at jet element 58, by the circulating resistance of this micro paths, the refrigerant inflow space 54 that pressure descends.Like this, the force value in the space 54 of the following side of compression member 9 (compression opposing face) is lower than the force value in the seal container 1.

At this, when making space 54 form high pressure, compression member 9 is pushed to supporting member 7 sides by the pressure brute force in

space

54,14A below the projecting member 14 of bearing surface and above the compression member 9 33 top dead center 33A produce friction, this forms tangible abrasion, and therefore, durability is very bad.But, as the present invention, by pressure mean of calculating 55, make the force value in space 54 be lower than high-voltage value in the seal container 1, can reduce top 33 the top dead center 33A that pushes compression member 9 power as following 14 sides of the projecting member 14 of bearing surface, top 33 the top dead center 33A that perhaps can form the following 14A that makes projecting member 14 and compression member 9 does not contact, has the state of micro-gap.Thus, can improve top 33 durability of compression member 9, realize improving reliability and reduce mechanical loss.

In addition, gas leakage by enclosing the oil seal in the seal container 1, therefore can be avoided in the gap between the following 14A of the top dead center 33A of compression member 9 and the projecting member 14 of supporting member 7, can keep high efficiency running.

In addition, set the hardness ratio of top 33 (compressing surfaces) of above-mentioned compression member 9 as the following 14A height of the projecting member 14 of the supporting member 7 of the bearing surface of top dead center 33A.At this, one of the material of the parts of top 33 and the blade 11 that are used for compression member 9 and processing method is illustrated in Figure 18.As shown in figure 18, as blade 11, when the Rapid Tool Steel based material (SKH) of nitriding treatment is carried out in use, top 33 of rotatingshaft 5 and compression member 9, the material of carburizing and quenching is carried out in use on the surface of Cr-Mo steel (SCM) and carbon steel (for example S45C etc.), perhaps Cr-Mo steel and carbon steel are carried out the material that high frequency hardening is handled, perhaps, use grey cast iron (FC) and spheroidal graphite cast iron (FCD).At this moment, the hardness of top 33 (compressing surfaces) of compression member 9 is lower than blade 11.

In addition, when blade 11 uses the Rapid Tool Steel based material that carries out the PVD processing, the material that top 33 of rotatingshaft 5 and compression member 9 used the material that carries out carburizing and quenching on the surface of Cr-Mo steel (SCM) and carbon steel, Cr-Mo steel and carbon steel are carried out the high frequency hardening processing, perhaps grey cast iron and spheroidal graphite cast iron, and carry out the material of nitrogenize or Quenching Treatment at grey cast iron and spheroidal graphite cast iron.At this moment, same as described above, the hardness ratio blade 11 of top 33 (compressing surfaces) of compression member 9 is low.

Like this, owing to make top 33 hardness ratio blade 11 of compression member 9 low, therefore, blade 11 is not easy abrasion.Thus, can improve the durability of blade 11.

In addition, owing to form the following 14A height of top 33 hardness ratio of compression member 9 as the projecting member 14 of the bearing surface of the top dead center 33A of this compression member 9, therefore, when top dead center 33A contacts with 14A below the projecting member 14, top 33 of compression member 9 is difficult to abrasion, can improve the durability of compression member 9.

At this,, when forming unlubricated state, to produce difference of hardness between 33 (compressing surfaces) at blade 11 and above the compression member 9 when not using the lubricated wet goods lubrication pressure key element 3 that contracts.Promptly constituting blade 11 situations with carbon-based material as shown in figure 18, as top 33 of rotatingshaft 5 and compression member 9, use is carried out material that carburizing and quenching handles, is carried out the material that high frequency hardening is handled at Cr-Mo steel and carbon steel the surface of Cr-Mo steel and carbon steel, perhaps grey cast iron and spheroidal graphite cast iron carry out the material of nitrogenize or Quenching Treatment, thus, without lubricated these slide parts of wet goods, and can slide.In addition, it is low also to form the hardness ratio blade 11 of top 33 (compressing surfaces) of compression member 9 this moment.

Equally, when constituting blade 11 with ceramic based material, as top 33 of rotatingshaft 5 and compression member 9, if the material that uses the ceramic based material identical, carries out material that carburizing and quenching handles on the surface of above-mentioned Cr-Mo steel and carbon steel, Cr-Mo steel and carbon steel are carried out the high frequency hardening processing with blade 11, perhaps, carry out the material of nitrogenize or Quenching Treatment at grey cast iron and spheroidal graphite cast iron, at this moment, also can slide without the lubricated slide part of wet goods.And the hardness ratio blade 11 of top 33 (compressing surfaces) of compression member 9 is low at this moment.

And then, when constituting blade 11 with polyethers-ether ketone (PEEK) based material of fluoride resin based material or macromolecular material, as top 33 of rotatingshaft 5 and compression member 9, if the material that uses Al (aluminium) to carry out the material of surface treatment (pellumina processings), the surface of above-mentioned Cr-Mo steel and carbon steel is carried out material that carburizing and quenching handles, Cr-Mo steel and carbon steel are carried out the high frequency hardening processing, perhaps grey cast iron and spheroidal graphite cast iron carry out the material of nitrogenize or Quenching Treatment, this moment is also same as described above, can slide without the lubricated slide part of wet goods.This moment compression member 9 top 33 hardness ratio blade 11 height.

As mentioned above, by using material with carbon element, ceramic based material, fluoride resin based material, when perhaps polyethers-ether ketone constitutes blade 11, use top 33 of materials processing compression member 9 shown in Figure 180 respectively, can be when constituting blade 11 with carbon-based material, ceramic based material, the hardness of top 33 hardness ratio blade 11 of compression member 9 is low, is using the fluoride resin based material, when perhaps polyethers-ether ketone constitutes blade 11, the hardness height of top 33 hardness ratio blade 11 of compression member 9.

Like this, by constituting blade 11 with carbon-based material, ceramic based material, fluoride resin based material or polyethers-ether ketone, and on compression member 9 33 and blade 11 between produce difference of hardness, can improve the abrasion resistance of compression member 9 and blade 11, can improve durability.

And then, top 33 hardness ratio by making compression member 9 is as the following 14A height of the projecting member 14 of the bearing surface of the top dead center 33A of this compression member 9, can be when top dead center 33A contacts with 14A below the projecting member 14, top 33 of compression member 9 also is not easy abrasion, can improve the durability of compression member 9.

Particularly, owing to constitute blade 11,, also can keep good sliding when slide part fuel feeding such as blade 11 and compression member 9 are not enough with above-mentioned carbon-based material, ceramic based material, fluoride resin material or polyethers-ether ketone.That is, or not can not form unlubricated state by the slide part of oil lubrication compression key element 3.Also can be applicable to the compressor of unlubricated specification thus, can improve versatility.

In addition, constitute small gap between the inwall of the side face of compression member 9 and cylinder 8, compression member 9 can freely be rotated thus.And, between the inwall of the side face of this compression member 9 and cylinder 8 also usable oils seal.

In the outside of above-mentioned exhaust port 28, above-mentioned expulsion valve 12 is installed in the side that is positioned at the compression volume 21 of cylinder 8, in the upper end of seal container 1 discharge tube 37 is installed simultaneously.And the bottom constitutes oil-collecting disk 36 in seal container 1.And, in the lower end of rotatingshaft 5, oil pump 40 being set, the one end stretches in the oil-collecting disk 36.And the oil that drinks up by this oil pump 40 reaches from the

oilhole

44,45 of oily path 42 processes as the side formation of the axial compression key element 3 of rotatingshaft 5 through the oily path 42 that is formed at center in the rotatingshaft 5, supplies with the slide part of compression key element 3 etc.In addition, in seal container 1, enclose established amount as CO ₂The refrigerant of (carbon dioxide), R-134a or HC system.

By above structure, when to the stator coil energising of the stator 4 that drives key element 2, rotor 6 rotates looking up along clockwise direction.To compression member 9 transmissions, like this, compression member 9 is being looked up rotation along clockwise direction in cylinder 8 by rotatingshaft 5 in the rotation of this rotor 6.At this moment, top 33 top dead center 33A of compression member 9 is in blade 11 sides of exhaust port 28, in the space that suction port 27 sides of blade 11 are surrounded by cylinder 8, supporting member 7, compression member 9 and blade 11 (low pressure chamber LR), by suction pipe 26 with suck path 24, the refrigerant that sucks in the refrigerant loops from suction port 27.

And, when compression member 9 when this state rotates, from through 33 inclination above stage of blade 11, suction port 27, make the stenosis of above-mentioned space narrow by top dead center 33A, the refrigerant in space (hyperbaric chamber HR) is compressed.And, by before the exhaust port 28, discharge compressed refrigerant continuously at top dead center 33A from exhaust port 28.On the other hand, top dead center 33A is by after the suction port 27, suction port 27 sides at blade 11, the volume in the space (low pressure chamber LR) that is surrounded by cylinder 8, supporting member 7, compression member 9 and blade 11 enlarges, thereby by suction pipe 26 with suck path 24, in compression volume 21, suck refrigerant in the refrigerant loop from suction port 27.

By expulsion valve 12, in seal container 1, discharge refrigerant from exhaust port 28.And the high pressure refrigerant process that is discharged in the seal container 1 drives the stator 4 of key element 2 and the air gap of rotor 6, and the top in seal container 1 (driving the top of key element 2) separates with oil, enters the refrigerant loop by discharge tube 37.On the other hand, isolated oil flows down from the gap 10 that forms between seal container 1 and stator 4, passes back into oil-collecting disk 36.

By such structure, compressor C is small-sized and simple in structure, can give full play to compression function simultaneously.Do not adjoin at entire cylinder 8 inner high voltages and low pressure as it is especially, simultaneously, compression member 9 has the shape that the thin portion 32 of continuous wall thickness 31 and wall, top 33 (compressing surfaces) present inclination, thus can fully guarantee corresponding to the wall thickness 32 in hyperbaric chamber and the inwall of cylinder 8 between closure size.

Thus, can prevent from effectively between compression member 9 and the cylinder 8 coolant leakage to take place, can turn round efficiently.In addition, the wall thickness 31 of compression member 9 plays flywheel, thereby cogging also reduces.In addition, compressor C is the compressor of so-called internal high pressure type, thereby, can implementation structure simplicity more.

In addition, in supporting member 7 (projecting member 14 of supporting member 7), constitute the slit 16 of blade 11, and, in this supporting member 7, helical spring 18 is set, thereby, needn't in the cylinder 8 that needs precision, form the blade installation structure, can improve processability.And then, when compression member 9 being formed one with rotatingshaft 5, can realize reducing number of spare parts as embodiment.

In addition, at present embodiment, hole 56 is communicated with at axis direction below compression member 9 in secondary supporting member 22 and forms; Intercommunicating pore 57 1 ends are communicated with hole 56 simultaneously from this hole 56 to the outside of secondary supporting member 22 along continuous straight runs and extend the other end and 1 interior connection of seal container; Jet element 58 inserts in the other end of this intercommunicating pore 57, forms small path (nozzle) at central part.Making in space 54 and the seal container 1 transfers means 55 to be communicated with by the pressure that is made of hole 56, intercommunicating pore 57 and jet element 58, make the small path of high pressure refrigerant in the seal container 1 by in jet element 58, forming, pressure is descended, make as the pressure in the pressure ratio seal container 1 in the space 54 of the following side of compression member 9 low.Yet, also being not limited to this, the pressure mean of calculating also can for example be used in the hole communicating space 54 and seal container 1 that axis direction connects secondary supporting member 22, is inserted in the jet element that central part forms micro paths (nozzle) at the opening of seal container 1 side.

(embodiment 2)

In addition, in embodiment 1, establish axle envelope sealing 50 in the conduct and main bearing 13 ends of the bearing of compression member 9 opposition sides, be used to prevent cold media air in the compression volume 21 from the fault of the clearance leakage of the main bearing 13 between rotatingshaft 5 and the supporting member 7 in possible trouble, but, also be not limited to like this, also can on rotatingshaft 5, establish piston ring seal corresponding to the position of bearing.

At this, Figure 19 and Figure 20 are the examples of compressor C of this moment, and Figure 19 represents the vertical profile profile of rotatingshaft 5 and compression key element 3, and Figure 20 has represented to install the stereogram of rotatingshaft 5 of the state of cylinder 8.As Figure 19 and shown in Figure 20, supplementary bearing 23 for following (compression opposing face) side of compression member 9, become the bearing of the opposition side of compression member 9, promptly, on outer circumferential face, form groove 61 corresponding to the rotatingshaft 5 of the position of main bearing 13 ends of the bearing of 33 sides above as compression member 9, in this groove 61, this piston ring seal 60 is installed.This piston ring seal 60 is the annulars with about 3mm～10mm width, is formed by stretchabilities such as rubber and the excellent material of durability.In addition, it is identical with the width of groove 61 that the width of piston ring seal 60 is set to, perhaps less than the width piston ring seal of groove 61.That is, because the external diameter of piston ring seal 60 is set to the external diameter smaller or equal to rotatingshaft 50, so at the state that piston ring seal 60 is installed in the groove 61, can not protrude from the outer circumferential face of rotatingshaft 5 outer periphery of piston ring seal 60, and be contained.

And, when becoming high pressure in compressor C starting, the seal container 1, piston ring seal 60, high pressure in the seal container 1 that is applied from the top is pushed the below to, and expand (extruding laterally), therefore, the gap between supporting member 7 and the rotatingshaft 5 is fully sealed by piston ring seal 60.

Like this, by piston ring seal 60, inner face at main bearing 13 fully seals, can prevent that cold media air in the compression volume 12 is from the fault of the clearance leakage of the main bearing 13 between rotatingshaft 5 and the supporting member 7, thereby, reducing the slip loss of the end of main bearing 3, and, can realize improving simultaneously because the volumetric efficiency that the raising of sealing produces.Thus, can realize improving the performance of compressor C.

In addition, at present embodiment, an above-mentioned piston ring seal 60 is set in the position corresponding to main bearing 13, still, the position that is provided with of piston ring seal 60 is not limited to above-mentioned position, also can be installed on the rotatingshaft 5 corresponding with supplementary bearing 23.In addition, also can use a plurality of these piston ring seals 60, like this, further improve the sealing between rotatingshaft 5 and main bearing 13 or rotatingshaft 5 and the supplementary bearing 23, high performance compressor can be provided.

In the various embodiments described above, the upside that is used in the seal container 1 is placed driving key element 2, the compressor C that places the longitudinal type of compression key element 3 at downside describes, but be not limited thereto, the upside that is used in seal container is placed the compression key element, place to drive the compressor of longitudinal type of key element and horizontal type compressor etc. at downside, the present invention also is effective.

In the various embodiments described above, be compression volume 21 to be located at the example at position of driving key element 2 sides of compression member 9 of top 33 sides of compression member 9, but also can be located at compression volume 21 and drive on the face of key element 2 opposition sides.

(embodiment 3)

Below, with reference to Figure 21～Figure 23 the third embodiment of the present invention is described.

Figure 21 is the vertical profile profile of the compressor C of this moment, and Figure 22 is another vertical profile profile of compressor C, and Figure 23 is another vertical profile profile again of compressor C.In addition, in Figure 21～Figure 23, the parts of additional and above-mentioned Fig. 1～parts same-sign shown in Figure 20 are brought into play identical or similar effects.

At present embodiment, in seal container 1, take in compression key element 3 at upside respectively, drive key element 2 at underside contain.That is,, compression key element 3 is disposed at the upside that drives key element 2 at present embodiment.

Driving key element 2 is motor, and it is same as the previously described embodiments, is made of at the rotor 6 that central authorities have rotatingshaft 5 stator 4 that is fixed in stator coils wound on seal container 1 inwall and the inboard that is positioned at this stator 4.

Compression key element 3 has: be fixed in seal container 1 inwall, be positioned at the supporting member 77 of the upper end of rotatingshaft 5; Be installed on the cylinder 78 of these supporting member 77 downsides with bolt; Be configured in the compression member 89 in this cylinder 78; Be installed on the main supporting member 79 of blade 11, expulsion valve 12 and cylinder 78 downsides with bolt.Thereby the concentric shape of central part ground protrudes the main bearing 13 that forms rotatingshaft 5 downwards below main supporting member 79.In addition, the under shed portion of the top closed cylinder 78 of main supporting member 79.

In the projecting member 84 of supporting member 77, form slit 16, in this slit 16, up and down reciprocatingly insert above-mentioned blade 11 freely movably.Form back pressure chamber 17 on the top in this slit 16, simultaneously, dispose helical spring 18 slit 16 in, it is as pressured means, push downwards blade 11 above.

And the upper shed portion of cylinder 78 is by supporting member 77 sealings, and like this, (between the compression member 89 in the cylinder 78 and the projecting member 84 of supporting member 77) constitutes compression volume 21 in cylinder 78 inside.In addition, in the master unit 85 of supporting member 77 and projecting member 84, form and suck path 24, simultaneously, suction pipe 26 is installed on seal container 1, is connected in an end of this suction path 24.Form suction port and the exhaust port that is communicated in compression volume 21 on cylinder 78, the other end that sucks path 24 is communicated with suction port.In addition, blade 11 is between this suction port and exhaust port.

Above-mentioned rotatingshaft 5 is supported at the main bearing 13 of main supporting member 79 formation with at the supplementary bearing 83 of supporting member 77 formation and the supplementary bearing 86 that forms in the lower end, rotates.Rotatingshaft 5 passes the central authorities of above-mentioned main supporting member 79, cylinder 78, supporting member 77, rotates the central part of ground axle suspension above-below direction freely by main bearing 13.In addition, ground axle suspension is freely rotated with supplementary bearing 83 in the top of rotatingshaft 5, and simultaneously, the upper end covers with supporting member 77.In addition, the below of rotatingshaft 5 is by 86 supportings of supplementary bearing.This supplementary bearing 86 is arranged at the downside that drives key element 2, is presented on the big circular ring type that central part has the hole of passing rotatingshaft 5 usefulness, and lead vertically the peripheral edge, is fixed in the inwall of seal container 1.On this supplementary bearing 86, form everywhere and be communicated with hole 87 up and down.In addition, protuberance 88 performances that are formed at supplementary bearing 86 absorb the effect of vibration, to prevent being sent to seal container 1 to the vibration of rotatingshaft 5 transmissions by supplementary bearing 86 from driving key element 2 grades.

Like this, owing to the bearing of establishing rotatingshaft 5 at the downside (supplementary bearing 86) of the upside (supplementary bearing 83) that compresses key element 3 and downside (main bearing 13) and driving key element 2, stable support rotatingshaft 5 can effectively reduce the vibration that compressor C produces.Like this, can realize improving the vibration characteristics of compressor C.

In addition, as present embodiment since compression volume 21 is configured in and drives key element 2 opposition sides compression member 89 top 93 on, so gas is difficult to can improve the sealing of main bearing 13 from main bearing 13 leakages.In addition, owing to seal the upper end of rotatingshafts 5 with supporting member 77, so also improve the sealing of supplementary bearing 83, and also can avoid the undesirable condition of the side face formation high pressure of rotatingshaft 5.

In the prior art, when compression key element 3 was configured in the upside of seal container 1, the slide part of the oil of the oil-collecting disk 36 of bottom in the seal container 1 being supplied with compression member 89 grades of compression key element 3 was difficult.

Promptly the side face at rotatingshaft 5 forms high pressure because of pressurized gas enter, and therefore can not carry out fuel feeding smoothly by the

oilhole

44,45 that is arranged at rotatingshaft 5 tops.

But, because upper end with supporting member 77 sealing rotatingshafts 5, therefore, can improve the sealing of supplementary bearing 83, the side face that can realize improving rotatingshaft 5 forms the undesirable condition of high pressure, thereby, can deliver to compression member 89 slide parts such as grade that are arranged at seal container 1 upside to oil by oil pump 40, can realize the fuel delivery optimization.

And, compression member 89 forms one with the top of above-mentioned rotatingshaft 5, be disposed in the cylinder 78, this compression member 89, drive rotation by rotatingshaft 5, be used to compress the fluid (refrigerant) that sucks from suction port, and by exhaust port row in seal container, present the general cylindrical concentric as a whole with rotatingshaft 5.

In addition, axial top 93 (compressing surfaces) that intersect of compression member 89 and rotatingshaft 5, from as the highest top dead center of top dead center through return top dead center again as minimum lower dead center to the shape that presents continuous tilt the lower dead center.

The compressing surface that presents the continuous tilt shape of this compression member 89 is disposed to be become in the compression member 89 and top 93 of driving key element 2 opposite sides that are accommodated in seal container 1 inner underside.

In addition, top 33 of 93 shape and embodiment's 1 compression member 9 is identical above the compression member 89, therefore omission explanation.Equally, set the hardness ratio of top 93 (compressing surfaces) of above-mentioned compression member 89 as the following 84A height of the projecting member 84 of the supporting member 77 of the bearing surface of top dead center 33A.Top 93 and the blade 11 of compression member 89 uses material and the processing method (with reference to Figure 18) that is described in detail in embodiment 1.Like this, same as the previously described embodiments, can improve the durability of compression member 89 and blade 11.

Especially when using material with carbon element, ceramic based material, fluoride resin based material or polyethers-ether ketone to constitute blade 11, respectively with top 93 of material shown in Figure 180 and processing method processing compression member 89, thus, on compression member 89 93 and blade 11 between produce difference of hardness, when when the slide part fuel feeding is not enough and compression key element 3, forming unlubricated state, also can keep good sliding simultaneously.

On the other hand, blade 11 is configured between suction port and the exhaust port, simultaneously, contacts with top 93 of compression member 89, and the compression volume 21 in the cylinder 78 is divided into low pressure chamber and hyperbaric chamber.In addition, frequent pressured this blade 11 of 93 sides upward of helical spring 18.

The under shed portion of cylinder 78 between (compression opposing face) and the main supporting member 79 (back side of compression volume 21), forms space 54 by main supporting member 79 sealings below compression member 89.This space 54 becomes by the airtight space of compression member 89 and main supporting member 79.And, in this space 54, flow into the refrigerant in the micro-compression volume 21 from the gap between compression member 89 and the cylinder 78, so the pressure ratio in space 54 is lower than the pressure of the high pressure refrigerant in the seal container 1 by the low pressure refrigerant height of suction port suction, pressure value in the middle of becoming.

Like this, because the pressure in space 54 is formed middle the pressure, therefore, can avoid compression member 89 to be pressed to upside by the pressure brute force in space 54, promptly avoid taking place compression member 89 top 93 with undesirable condition as the remarkable abrasion of following 84A of the projecting member 84 of bearing surface.Thus, can improve top 93 durability of compression member 89.

And then, in the middle of being formed, the pressure as the space 54 of the compression opposing face side of compression member 89 presses, pressure in the pressure ratio seal container 1 in space 54 is low, thereby utilizes this pressure difference, also can be smoothly to compression member 89 and near main bearing 13 fuel feeding as the periphery in space 54.

On the other hand,, do not form high pressure as it is, make as the value of the pressure of this back pressure chamber 17 of confined space pressure height than the refrigerant (refrigerant) that sucks by suction port as above-mentioned back pressure chamber 17, and lower than the pressure in the seal container 1.In the prior art, make one one of back pressure chamber 17 with seal container 1 in is communicated with, back pressure chamber 17 formation high pressure, with the pressured downwards blade 11 of helical spring 18.But,,,, probably can make near fuel feeding deficiency blade 11 so back pressure chamber 17 is formed high pressure because compression key element 3 is positioned at the top of seal container 1 at present embodiment.

At this, do not make

back pressure chamber

17 and 1 interior connection of seal container, and form airtight space, therefore,, only in this back pressure chamber 17, flow into the low pressure chamber side of pettiness compression volume 21 and the refrigerant of hyperbaric chamber side from the gap of blade 11.Therefore, back pressure chamber 17 is than the pressure height of the refrigerant that is sucked by suction port, and lower and press in the middle of forming than the pressure in the seal container 1.Like this,, the oily path in the rotatingshaft 5 42 is risen, also deliver to the periphery of blade 11 from the oil of

oilhole

44,45 outflows because the pressure ratio seal container 1 in the back pressure chamber 17 is low, thereby can utilize above-mentioned pressure difference.

Like this, even when compression key element 3 is arranged at upside in the closed unit 1, also can improve the reliability of compressor C smoothly to the slide part fuel feeding of compression member 89 and blade 11 etc.

In addition, constitute small gap between the inwall of the side face of compression member 89 and cylinder 78, compression member 89 is free to rotate like this.And, between the inwall of the side face of this compression member 89 and cylinder 78, also seal with oil.

Be positioned at the side of the compression volume 21 of cylinder 78 in the outside of above-mentioned exhaust port, above-mentioned expulsion valve 12 is installed, on cylinder 78 and supporting member 77, form the discharge tube 95 that is communicated with upside in this expulsion valve 12 and the seal container 1 simultaneously.And compressed refrigerant is arranged to seal container 1 internal upper part by expulsion valve 12 and discharge tube 95 from exhaust port in cylinder 78.

In addition, be formed on the intercommunicating pore 120 that axis direction (above-below direction) connects this cylinder 78 and supporting member 77 in the roughly position of symmetry of the above-mentioned expulsion valve 12 of cylinder 78 and supporting member 77.Discharge tube 38 is installed corresponding to the position of the bottom of above-mentioned intercommunicating pore 120 in side at seal container 1.As the above-mentioned refrigerant that enters seal container 1 top from discharge tube 95 through intercommunicating pore 120 from the outside of discharge tube 38 rows to compressor C.In addition, in the lower end of rotatingshaft 5 oil pump 40 is set, the one end stretches in the oil-collecting disk 36 of bottom in the seal container 1.And the oil that sucts by this oil pump 40 runs through the slide part etc. that oilhole 44,45 that the side of the axial compression key element 3 that becomes rotatingshaft 5 forms is delivered to compression key element 3 by the oily path 42 that is formed centrally in rotatingshaft 5 with from oily path 42.In addition, in seal container 1, for example enclose established amount CO ₂The refrigerant of (carbon dioxide), R-134a or HC system.

With above structure, when to the stator coil energising of the stator 4 that drives key element 2, rotor 6 rotates by looking up clockwise direction.The rotation of this rotor 6, to compression member 89 transmissions, like this, compression member 89 is rotated by looking up clockwise direction in cylinder 78 by rotatingshaft 5.At this moment, top 93 top dead center (not illustrating) of compression member 89 is positioned at blade 11 sides of exhaust port, in the space (low pressure chamber) of suction oral-lateral by cylinder 78, supporting member 77, compression member 89 and blade 11 encirclements of blade 11, the refrigerant in suction port sucks the refrigerant loop by suction pipe 26 and suction path 24.

And, when compression member 89 when this state rotates, make the volume stenosis in above-mentioned space narrow by top 93 inclination from the stage of top dead center by blade 11, suction port, the refrigerant in space (hyperbaric chamber) is compressed.And, before passing through exhaust port, top dead center discharges compressed refrigerant continuously from exhaust port.On the other hand, top dead center is by after the suction port, because the volume in the space (low pressure chamber) that the suction oral-lateral of blade 11 is surrounded by cylinder 78, supporting member 79, compression member 89 and blade 11 enlarges, thereby the refrigerant the refrigerant loop in is by suction pipe 26 with suck path 24 in suction port suction compression volume 21.

Refrigerant enters seal container 1 internal upper part from exhaust port by expulsion valve 12 and discharge tube 95.And, be discharged into the high pressure refrigerant in the seal container 1, through the top of seal container 1,, arrange to the refrigerant loop by discharge tube 38 through being formed at the intercommunicating pore 120 of supporting member 77 and cylinder 78.On the other hand, the oil of separation flows down by intercommunicating pore 120, and then, between seal container 1 and stator 4, flow down, be back to oil-collecting disk 36.

In addition, in embodiment, because back pressure chamber 17 is formed confined space, therefore, the pressure height of the refrigerant that the pressure ratio that makes the back pressure chamber 17 that the back pressure as blade 11 applies is sucked by suction port, lower than the pressure in the seal container 1, but be not limited to so back pressure chamber 17 is formed confined spaces, for example, also can be communicated with in back pressure chamber 17 and the seal container 1 by trickle path (nozzle).At this moment, because the refrigerant in the seal container 1 flows into back pressure chamber 17 by nozzle, so descend at the pressure of the process refrigerant that passes through this nozzle.Like this, make the pressure height of the value of back pressure chamber 17 than the refrigerant that sucks by suction port, lower than the pressure in the seal container 1.Thereby can utilize pressure difference smoothly to the periphery fuel feeding of blade 11.In addition, by regulating the footpath of nozzle, also can set the pressure that flows into the refrigerant in the back pressure chamber 17 freely.

In addition, the space 54 of the compression opposing face side of compression member 89 is also identical with back pressure chamber 17, pressure as the space 54 of confined space also becomes the low pressure refrigerant height that sucks than by suction port, than low middle pressure of the pressure of the high pressure refrigerant in the seal container 1, this space 54 also can be by being communicated with in trickle path (nozzle) and the seal container 1.At this moment, therefore the refrigerant in the seal container 1 reduces at the process refrigerant pressure by this nozzle by nozzle inflow space 54.Like this because the value that makes space 54 is than the refrigerant pressure height that is sucked by suction port, lower than the pressure in the seal container 1, thereby, can avoid compression member 89 top 93 with undesirable condition as the remarkable abrasion of following 84A of the projecting member 84 of bearing surface.Thus, can improve top 93 durability of compression member 89.And then, press in the middle of above-mentioned by space 54 is formed, utilize pressure difference also can be smoothly to compression member 89 and near main bearing 13 fuel feeding as the periphery in space 54.In addition, by regulating the bore of nozzle, also can set the pressure of the refrigerant in the inflow space 54 freely.

(embodiment 4)

Below, with reference to Figure 24～Figure 26 the fourth embodiment of the present invention is described.Figure 24～Figure 26 is the vertical profile profile of the compressor C of this moment, and each figure represents different sections respectively.In addition, in Figure 24～Figure 26, the parts of additional and above-mentioned Fig. 1～identical numbering of parts shown in Figure 23 brings into play identical or similar effects, so the omission explanation.

In the present embodiment, upside is taken in and is driven key element 2 in seal container 1, and underside contain drives key element 3.Promptly driving the downside configuration compression key element 3 of key element 2.

Compression key element 3 has: the main supporting member 107 that is fixed on the inwall of seal container 1; Be installed on the cylinder 108 of these supporting member 107 downsides by bolt; Be disposed at the compression member 109 in this cylinder 108; Blade 11, expulsion valve 12; Be installed on the secondary supporting member 110 of cylinder 108 downsides by bolt.The concentric shape of upper central portion of main supporting member 107 protrudes upward and forms the main bearing 13 of rotatingshaft 5, and in addition, the outer periphery erects to axis direction (going up direction), and this outer periphery that erects is fixed in the inwall of seal container 1 as mentioned above.

And, the upper shed portion of cylinder 108 is by main supporting member 107 sealings, like this, the seal space 115 that (the compression opposing face side of compression member 109) formation is sealed by this compression member 109 and main supporting member 107 between (compression opposing face) and the main supporting member 107 above the compression member in being located at cylinder 108 109.

Above-mentioned secondary supporting member 110 is by body, connect its supplementary bearing 23 of forming of central authorities and constitute the top 112A formation even surface of this projecting member 112 with the projecting member 112 of bolt in upper central portion.

In addition, the under shed portion of cylinder 108 is by projecting member 112 sealings of secondary supporting member 110, and like this, (cylinder 108 inside between the projecting member 112 of compression member 109 and secondary supporting member 110) constitute compression volume 21 in cylinder 108 inside.

In the projecting member 112 of secondary supporting member 110, form slit 16, move back and forth up and down in this slit 16 and insert above-mentioned blade 11 freely.Form back pressure chamber 17 in the bottom in this slit 16, simultaneously in slit 16, configuration helical spring 18, it is as pressured means, push upward blade 11 below.

In addition, form in the projecting member 112 of cylinder 108 and secondary supporting member 110 and suck path 24, installation does not have illustrated suction pipe on seal container 1 simultaneously, is connected with an end of above-mentioned suction path 24.Form suction port and the exhaust port that is communicated with compression volume 21 on this cylinder 108, the other end that sucks path 24 is communicated with suction port.In addition, above-mentioned blade 11 is between this suction port and exhaust port.

Rotatingshaft 5 supports and turns by the main bearing 13 that forms on main supporting member 107 with at the supplementary bearing 23 that secondary supporting member 110 forms.That is, rotatingshaft 5 passes the central authorities of above-mentioned supporting member 107, cylinder 108 and secondary supporting member 110, and main bearing 13 rotates the central part of ground axle suspension above-below direction freely, and ground axle suspension is freely rotated with the supplementary bearing 23 of secondary supporting member 110 in the lower end simultaneously.And compression member 109 is disposed in the cylinder 108 integrally formed by the position under the mediad of rotatingshaft 5.

This compression member 109, be disposed in the above-mentioned cylinder 108, drive rotation by rotatingshaft 5, be used to compress the fluid (is refrigerant at present embodiment) that sucks from suction port from exhaust port by expulsion valve 12 and discharge tube 95 rows in seal container 1, present the general cylindrical concentric as a whole with rotatingshaft 5.Compression member 109 presents the thin portion of a side thickness portion and another sidewall continuous shape, is formed on axial following 113 (compressing surfaces) that intersect of rotatingshaft 5 that wall thickness is low, the high plane of inclination of the thin portion of wall.113 return top dead center from becoming the highest top dead center again through becoming minimum lower dead center promptly, be presented on from the top dead center to the lower dead center between the shape (not having diagram) of continuous tilt.

The compressing surface that presents the continuous tilt shape of this compression member 109, be disposed at compression member 109, become and be accommodated in driving key element 2 opposition sides of upside in the seal container 1 face following 113.

In addition, the discharge tube 95 of present embodiment is to extend to pipe on the pasta of the oil-collecting disk 36 of bottom in the seal container 1 from exhaust port 28.The refrigerant of compression in cylinder 108 passes through on expulsion valve 12, the pasta of discharge tube 95 rows in seal container 1 from exhaust port 28.

In addition, following 113 shape of compression member 109 is identical with top 33 shapes of embodiment 1 compression member 9, therefore omits its explanation.Equally, set the hardness ratio of following 113 (compressing surfaces) of above-mentioned compression member 109 as the top 112A height of the projecting member 112 of the secondary supporting member 110 of the bearing surface of top dead center 33A.In addition, the material and the processing method of following 113 and blade 11 of compression member 109 are used the material and the processing method (with reference to Figure 18) that are described in detail in embodiment 1.Like this, same as the previously described embodiments, can improve the durability of compression member 89 and blade 11.

Especially, when constituting blade 11 with carbon-based material, ceramic based material, fluoride resin material or polyethers-ether ketone, use material and the processing method of Figure 18 to process following 113 of compression member 109 respectively, thus below compression member 109 113 and blade 11 between produce difference of hardness, simultaneously, even when when the slide part fuel feeding is not enough and compression key element 3, forming unlubricated state, also can keep good sliding.

On the other hand, blade 11 is disposed between suction port and the exhaust port as described above, contacts with following 113 of compression member 109 simultaneously, and the compression volume 21 in the cylinder 108 is divided into low pressure chamber and hyperbaric chamber.In addition, helical spring 8 is often to pressured this blade 11 of following 113 sides.

In addition, above-mentioned space 115, be by the airtight space of compression member 109 and main supporting member 107 as mentioned above, but owing to can flow into refrigerant in the compression volume 21 from the gap between compression member 109 and the cylinder 108 trace, thus the pressure in space 115 become than the low pressure refrigerant height that sucks through suction port, than the pressure of the high pressure refrigerant seal container 1 in low in the middle of pressure.

Like this, because the pressure in space 115 is formed middle the pressure, can avoid compression member 109 to push in the upside brute force by the pressure in space 115, also avoid compression member 109 following 113 with undesirable condition as the remarkable abrasion of top 112A of the projecting member 112 of bearing surface.Thus, can improve following 113 durability of compression member 109.

In addition, because the pressure in the space 115 of the compression opposing face side that becomes compression member 109 is formed middle the pressure, pressure in the pressure ratio seal container 1 in space 115 is low, thereby also can utilize this pressure difference, near smooth fuel feeding as the compression member 109 of the periphery in space 115 and main bearing 13.

In addition, become following 113 with the compression member 109 that drives key element 2 opposition sides, be difficult to the cylinders leakages take place, can improve the sealing of main bearing 13 from main bearing 13 because compression volume 21 is configured in.In addition, make the supplementary bearing 23 of following 113 sides of the compression member 109 of compression volume 21 be positioned at oil-collecting disk 36, thereby, also can avoid gas to leak by oil from supplementary bearing 23, also improve the sealing of supplementary bearing 23, and also can avoid the side face of rotatingshaft 5 to become the undesirable condition of high pressure.Thus, also can utilize the fuel feeding of pressure difference smoothly.

In addition, identical with the foregoing description (embodiment 3), do not make above-mentioned back pressure chamber 17 form high pressure as it is, the value as the pressure of this back pressure chamber 17 of confined space is formed than the refrigerant pressure height that sucks through suction port and lower than the pressure in the seal container 1.Like this, because it is low in the pressure ratio seal container 1 in the back pressure chamber 17, thereby utilize above-mentioned pressure difference, oily path in the rotatingshaft 5 42 is risen, the oil that does not have illustrated oilhole that connects the side formation of the axial compression member 109 that becomes rotatingshaft 5 from oily path 42 is delivered to the periphery of blade 11.

In addition, constitute small gap between the inwall of the side face of compression member 109 and cylinder 108, compression member 109 rotations freely like this.And, between the inwall of the side face of this compression member 109 and cylinder 108, also form sealing with oil.

And, expulsion valve 12 is installed in the side that is positioned at the compression volume 21 of cylinder 108 in the outside of exhaust port, form discharge tubes 95 with main supporting member 107 simultaneously in the cylinder 108 in the outside that becomes expulsion valve 12, the upper end of discharge tube 95 is in the pasta upper shed of oil-collecting disk 36.

Like this, owing to the cold media air of discharging from exhaust port is passed through on the discharge tube 95 guiding pastas pulsation that can lower the refrigerant of discharge.

As detailed above, also can improve the reliability of compressor C at present embodiment smoothly to slide part fuel feeding such as compression member 109 and blades 11.In addition, in embodiment 3, the bearing of rotatingshaft 5 is set at three positions of downside (supplementary bearing 86) of the upside (supplementary bearing 83) that compresses key element 3 and downside (main bearing 13) and driving key element 2, and at present embodiment, with the abundant axle supporting rotatingshaft 5 of

main bearing

13 and 23 two bearings of supplementary bearing, thereby, reduce number of spare parts, can make compressor with low price.

(embodiment 5)

Below, Figure 27～29 expressions the 5th embodiment's compressor C, Figure 27～Figure 29 is the vertical profile profile of the 5th embodiment's compressor C, each figure represents different sections respectively.In addition, in Figure 27～Figure 29, add with the parts of above-mentioned Fig. 1～same-sign shown in Figure 26 and bring into play identical or similar effect, thereby omit explanation.

At this moment, take in driving key element 2 at seal container 1 inner underside, upside is taken in compression key element 3, the compression volume 21 of compression key element 3 is formed the following side of driving key element 2 sides of compression member 109, top 113 of this compression member 109 is formed the shape of continuous tilt between from the top dead center to the lower dead center.At this, identical with the various embodiments described above, the hardness ratio of following 113 (compressing surfaces) of setting compression member 109 is as the top 112A height of the projecting member 112 of the secondary supporting member 110 of the bearing surface of top dead center 33A.In addition, following 113 of compression member 109 and the material of blade 11 and processing method use material and the processing method (with reference to Figure 18) that is described in detail in embodiment 1.Like this, same as the previously described embodiments, can improve the durability of compression member 109 and blade 11.

Especially, when constituting blade 11 with carbon-based material, ceramic based material, fluoride resin based material or polyethers-ether ketone, respectively with following 113 of material shown in Figure 180 and processing method processing compression member 109, therefore, below compression member 109 113 and blade 11 between produce difference of hardness, simultaneously, even when when the slide part fuel feeding is not enough and a compression key element 3, forming unlubricated state, also can keep good sliding.

On the other hand, the space 115 of the compression opposing face side that becomes compression member 109 is formed by the airtight space of compression member 109 and main supporting member 107, therefore flow into the refrigerant in the micro-compression volume 21 from the gap between compression member 109 and the cylinder 108, so the pressure in space 115 becomes than the low pressure refrigerant height that sucks through suction port 27, than low middle pressure of the pressure of the high pressure refrigerant in the seal container 1.

Like this, because the pressure in space 115 is formed middle the pressure, can avoid compression member 109 to push in the upside brute force by the pressure in space 115, also avoid compression member 109 following 113 with the undesirable condition of top 112 remarkable abrasions of the projecting member 112 that becomes bearing surface.Thus, can improve following 113 durability of compression member 109.

On the other hand, in main supporting member 107 and cylinder 108, form slit 16, in this slit 16, up and down reciprocatingly move freely and insert blade 11.Form back pressure chamber 17 in the bottom in this slit 16, slit 16 in, dispose helical spring 18, its as pressured means push upward blade 11 below.And, blade 11 contact compression member 109 following 113, the compression volumes 21 in the cylinder 8 are divided into low pressure chamber and hyperbaric chamber.In addition, helical spring 18 is often to pressured this blade 11 of following 113 sides.

And, back pressure chamber 17, as above-mentioned embodiment, the value that forms the pressure of this back pressure chamber 17 as confined space compares the pressure height of the refrigerant (refrigerant) that sucks through suction port 27, and lower than the pressure in the seal container 1.Like this,, back pressure chamber 17 becomes airtight space, so the gap trace from blade 11 flows into the low pressure chamber side of compression volume 21 and the refrigerant of hyperbaric chamber side in this back pressure chamber 17 owing to being communicated with seal container 1.Therefore back pressure chamber 17 becomes than refrigerant pressure height that sucks through suction port 27 and middle press lower than the pressure in the seal container 1.Like this, low in the pressure ratio seal container 1 in the back pressure chamber 17, thereby, utilize above-mentioned pressure reduction, also can rise the oily path in the rotatingshaft 5 42, be sent to the periphery of blade 11 from the oil of

oilhole

44,45 outflows.

On the other hand, the space 115 that becomes the compression opposing face side of compression member 109 forms by compression member 109 and main supporting member 107 sealed space.Like this, flow into the refrigerant in the micro-compression volume 21 from the gap between compression member 109 and the cylinder 108, thus the pressure in space 115 become than the low pressure refrigerant height that sucks through suction port 27, than the pressure of the high pressure refrigerant seal container 1 in low in the middle of pressure.

Like this, owing to press in the middle of the pressure in space 115 formed, can avoid compression member 109 by the pressure in space 115 push in the upside brute force, compression member 109 below 113 and become the undesirable condition of the remarkable abrasion of 112A above the projecting member 112 of bearing surface.Like this, can improve following 113 durability of compression member 109.

In addition, because the pressure in the space 115 of the compression opposing face side that becomes compression member 109 is formed middle the pressure, pressure in the pressure ratio seal container 1 in space 115 is low, thereby, utilize this pressure reduction, also can carry out near fuel feeding as the compression member 109 of the periphery in space 115 and main bearing 13 smoothly.

In addition,, be that example describes with the refrigerant loop that is used for refrigerating machine, the compressor of compression refrigerant, yet be not limited thereto that the present invention is also effective to the air compressor that sucks air, compression and discharge in the various embodiments described above.In addition, in each embodiment, use above-below direction in the seal container of longitudinal type is taken in the longitudinal type compressor that drives key element and compression key element and is described, yet is not limited thereto, and the present invention is to using horizontal type compressor also effective.

Claims

1. a compressor is characterized in that, it has the driving key element that is placed in the seal container and with the shaft-driven compression key element of the rotation of this driving key element,

This compression key element comprises: cylinder, and it constitutes compression volume in inside; Suction port and exhaust port, its with this cylinder in compression volume be communicated with; Compression member, its axial compressing surface that intersects with described rotatingshaft also tilts between top dead center and lower dead center continuously, is configured in simultaneously in the described cylinder and also rotates, and compresses the fluid that sucks from described suction port and is discharged in the described seal container by described exhaust port; Blade, it is configured between described suction port and the exhaust port, contacts with the compressing surface of described compression member, and the compression volume in the described cylinder is divided into low pressure chamber and hyperbaric chamber,

Be made as the force value of the compression opposing face side of described compression member lower than the pressure in the described seal container.