CN101165346B - Refrigerant compressor - Google Patents
Refrigerant compressor Download PDFInfo
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- CN101165346B CN101165346B CN2007101816303A CN200710181630A CN101165346B CN 101165346 B CN101165346 B CN 101165346B CN 2007101816303 A CN2007101816303 A CN 2007101816303A CN 200710181630 A CN200710181630 A CN 200710181630A CN 101165346 B CN101165346 B CN 101165346B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/42—Pumps with cylinders or pistons
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Abstract
A refrigerant compressor (10) is provided, which includes compressor part (2) compressing refrigerant with on chlorine in sealed container (1), rotation axis (7) driving the compressor part (2), bearing supporting the rotation axis (7), and motor (9) rotating the rotation axis (7). The rotation axis (7) includes main axis part (7a) fixed on motor rotor (9b), crank part (7b) combined on the compressor part (2). The bearing is provided with main bearing (6c) supporting the main axis part (7a), and crank bearing (4c) supporting the crank part (7b). The main bearing (6c) consists of the crank side main bearing (6c1) and the motor side main bearing (6c2) near to the crank side main bearing. The crank bearing (4c) and the crank side main bearing (6c1) are composed by carbon axis containing graphite whose gas hole of carbon substrate is infiltrated by metal. The motor side main bearing (6c2) is composed by intervolve set formed by curly plate.
Description
Technical field
The present invention relates to a kind of coolant compressor, relate in particular to the coolant compressor that is applicable to that idle call, freezing usefulness and water-heating machine are used.
Background technique
As existing coolant compressor, as at the coolant compressor shown in the TOHKEMY 2002-147354 communique.This coolant compressor in seal container, possesses the compressor section of the not chloride refrigeration agent of compression, the running shaft that drives this compressor section, the bearing of this running shaft of axle supporting and the motor that said running shaft is rotated.Running shaft possesses the crank portion that is fixed on the main shaft part on the motor rotor and is sticked in compressor section.The bearing of running shaft has main bearing and the crankshaft bearing of axle supporting crank portion of main shaft part of the compressor section side of a supporting motor.As main bearing and crankshaft bearing, use carbon bearing material or resin shaft corbel or band back boxing resin compounded bearing material are disclosed.
Patent documentation 1: Japanese Patent Laid is opened the 2002-147354 communique
In the coolant compressor of described patent documentation 1, all use under the situation of carbon bearing at main bearing and crankshaft bearing, there is the carbon bearing problem of ultra-high price.
In addition, at main bearing and crankshaft bearing all under the situation with resin shaft corbel or band back boxing resin shaft corbel, there is the reliability problems of the wearability that is difficult to guarantee under the boundary lubrication condition or anti-burn-back property etc.Recently, use refrigeration agents such as R410A, carbon dioxide, propane as refrigeration agent, in order to improve compressor performance; The load of bearing increases; Press high part partly to be cut off at face, bearing is directly contacted with rotation axis partial ground, be easy to form so-called boundary lubrication condition by the lubricating film that lubricant oil forms; During particularly, coolant compressor entry into service (startup) or excessive refrigeration agent sneak into and be easy to form lubricating status.
Summary of the invention
The objective of the invention is, provide cheap and can guarantee the coolant compressor of reliability and be used for air conditioner, refrigerating machine and the water-heating machine of this coolant compressor.
For the coolant compressor of first form of the present invention of reaching said purpose possesses in seal container: compressor section, the refrigeration agent that its compression is not chloride; Running shaft, it drives said compressor section; Bearing, it carries out the axle supporting to said running shaft; Motor; Said running shaft is rotated; Said running shaft has main shaft part that is fixed on the said motor rotor and the crank portion that engages with said compressor section; The bearing that said running shaft is carried out the axle supporting has the main bearing of the said main shaft part of axle supporting and the crankshaft bearing of the said crank portion of axle supporting; Said coolant compressor is characterised in that said main bearing is made up of crank side main bearing and the motor side main bearing that is adjacent to this crank side main bearing, and the cover that intervolves that said motor side main bearing forms so that sheet material is curled constitutes.
Concrete formation in said first form of the present invention is for example said down.
(1) said compressor section makes erectting on the base plate to be provided with the fixedly scroll of vortex shape cover plate and on base plate, to erect and is provided with the rotation scroll of vortex shape cover plate with separately cover plate engagement and constitute, and said crankshaft bearing is arranged in the hub portion that the anti-cover plate to said rotation scroll is provided with side-prominently; Said main bearing more supports said running shaft axle near the compressor section side than said motor, and said running shaft has and utilizes differential pressure to supply to the oily path of said crankshaft bearing and said main bearing the lubricant oil that retains in the said seal container.
(2) said intervolve cover be with possess the PTFE that self lubricity is arranged be resin or self lubricity arranged contain graphite or MoS
2Deng polyimide be the sheet metal of the surface layer of resin, this surface layer is constituted inboard mode, curling is shaped.
(3) in said (2), said intervolve cover have PTFE that infiltration in the porous matter of the bronze on being sintered in said sheet metal has a self lubricity be resin or have a self lubricity contain graphite or MoS
2Deng polyimide be the surface layer of resin.
(4) in said (2) or (3), said crankshaft bearing and said crank side main bearing are that master's the carbon bearing of alloy infiltration in the pore of the carbonaceous substrate that contains 20～50 weight % graphite constitutes by select the VIII family and the Sn that make except IB family, Fe a kind of or with these metals.
(5) in said (2) or (3); Said crankshaft bearing and said crank side main bearing by; In the pore of the carbonaceous substrate that contains graphite; VIII family and Sn except the Fe of 1B family select a kind of metal, are master's alloy by infiltration with these metals perhaps, and shore hardness is 65～120 carbon bearing formation.
(6) in said (5); Said crankshaft bearing and said crank side main bearing by select the VIII family and the Sn that make except IB family, Fe a kind of or with these metals be master's alloy infiltration in the pore of the carbonaceous substrate that contains graphite, and the porosity is that the carbon bearing of 0.05%～2 volume % constitutes.
(7) in said (2) or (3); Said crankshaft bearing and said crank side main bearing are main by select VIII family except IB family, Fe and the Sn a kind of or with these metals, and the V and the carbon bearing of at least a alloy infiltration in the pore of the carbonaceous substrate that contains graphite of Ti that contain below the 0.2 weight % constitute.
(8) said refrigeration agent is any one a refrigeration agent in R410A, carbon dioxide, the propane.
In addition, second form of the present invention is a kind of air conditioner, and it uses each described coolant compressor in the claim 1～9.
In addition, the 3rd form of the present invention is a kind of refrigerating machine, and it uses each described coolant compressor in the claim 1～9.
In addition, the 4th form of the present invention is a kind of water-heating machine, and it uses each described coolant compressor in the claim 1～9.
The invention effect
According to the present invention, can obtain cheap and can guarantee the coolant compressor of reliability and use these air conditioner, refrigerating machine and water-heating machine.
Description of drawings
Fig. 1 is the longitudinal stereoscopic figure of the coolant compressor of first mode of execution of the present invention;
Fig. 2 is the expansion stereogram of the major component of Fig. 1 coolant compressor;
Fig. 3 is illustrated in shore hardness and the unlubricated friction coefficient graph of a relation of bearing material in embodiment and comparative example that uses in the coolant compressor of Fig. 1;
Fig. 4 is illustrated in shore hardness and the unlubricated fixed plate abrasion loss graph of a relation of bearing material in embodiment and comparative example that uses in the coolant compressor of Fig. 1;
Fig. 5 be illustrated in the bearing material that uses in the coolant compressor of Fig. 1 embodiment and comparative example in shore hardness and the friction factor graph of a relation in the lubricant oil;
Fig. 6 is illustrated in the shore hardness of bearing material in embodiment and comparative example and the abrasion loss graph of a relation in the lubricant oil that uses in the coolant compressor of Fig. 1;
Fig. 7 is the graph of a relation that is illustrated in the bearing material that uses in the coolant compressor of Fig. 1 porosity and abrasion loss in bearing oil in embodiment and comparative example;
Fig. 8 is illustrated in the bearing material melting point in an embodiment and the graph of a relation of friction factor that uses in the coolant compressor of Fig. 1;
Fig. 9 is the graph of a relation that is illustrated in the bearing material graphite containing ratio in an embodiment that uses in the coolant compressor of Fig. 1 and friction factor under unlubricated state;
Figure 10 is illustrated in the bearing material experiment face pressure of using in the coolant compressor of Fig. 1 in an embodiment and the graph of a relation of abrasion loss;
Figure 11 is illustrated in the bearing material that uses in the coolant compressor of Fig. 1 schematic representation of the abrasion loss in the anti-loading experiment in the lubricant oil in an embodiment;
Figure 12 is the schematic representation that is illustrated in the abrasion loss under the unlubricated in an embodiment state of the bearing material that uses in the coolant compressor of Fig. 1;
Figure 13 is the schematic representation that is illustrated in the abrasion loss under the unlubricated in an embodiment state of the bearing material that uses in the coolant compressor of Fig. 1.
Among the figure:
The 1-seal container; The 2-compressor section; The 3-balancer weight; 4-rotates scroll; The 4a-base plate; 4b-vortex shape cover plate; 4c-swivel bearing (crankshaft bearing); 4d-back side keyway; 5-is scroll fixedly; The 5a-base plate; 5b-vortex shape cover plate; The 5d-suction port; The 5e-ejiction opening; The 6A-upper frame; The 6B-underframe; The 6c-main bearing; The 6c1-supplementary bearing; The 7-running shaft; The 7a-main shaft part; The 7b-crank portion; 7c-oil ingress pipe; 7d-oil path; 8-Euclidean connector; The 9-motor; The 9a-stator; The 9b-rotor; The 10-coolant compressor.
Embodiment
Below, with reference to accompanying drawing, the coolant compressor of a mode of execution of the present invention is described.
The coolant compressor 10 of this mode of execution like Fig. 1 and shown in Figure 2, possesses in seal container 1, compresses the compressor section 2 of not chloride refrigeration agent; Drive the running shaft 7 of this compressor section 2; Bearing 4c, 6c1,6c2, the 6d of this running shaft 7 of axle supporting; The upper frame 6A of spring bearing 6c1,6c2; The underframe 6B of block bearing 6d; Make motor 9 that running shaft 7 rotates as the main composition key element.Use this any one refrigeration agent wherein of R410A, carbon dioxide, propane as not chloride refrigeration agent.Bottom at seal container 1 has retained lubricant oil.
This coolant compressor 10 is that compressor section 2 is configured in the top, and motor 9 is configured in the below, via vertically disposed running shaft 7, compressor section 2 is connected setting and has constituted vertical scroll compressor with motor 9.Motor 9 is by constituting at the stator 9a of seal container 1 internal fixation and the rotor 9b that disposes freely in the interior sideway swivel of stator 9a.
As the Euclidean connector 8 of the anti-locking mechanism of rotation is to be used to make rotation scroll 4 rotation does not take place not to be rotated the connector of motion with respect to fixing scroll 5, and is sticked between the base keyway of back side keyway and upper frame 6A of the base plate 4a that rotates scroll 4.
Running shaft 7 possesses the main shaft part 7a of the rotor 9b that is fixed in motor 9 and is sticked in the crank portion 7b of compressor section 2.On running shaft 7, be provided with counterweight 3.Main shaft part 7a connects on the rotor 9b and extends below, and the underpart is equipped with oily ingress pipe 7c.The upper side end of crank portion 7b and main shaft part 7a is wholely set, and engages with the 4e of hub portion to the side-prominent setting of anti-cover plate of rotation scroll 4.
Crank side main bearing 6c1, by in the pore of the carbonaceous substrate that contains graphite the infiltration metal carbon bearing constitute.This crank side main bearing 6c1; Constitute as follows particularly; That is: in the pore of the carbon element matter base material that contains 20～50 weight % graphite the VIII family of infiltration except IB family, the Fe, and Sn select a kind of, or be main with these metals; Comprise V and at least a alloy of Ti below 0.2% weight, and shore hardness is 65～120, the porosity is the carbon bearing of 0.05～2 volume %.
Motor side main bearing 6c2, the cover that intervolves that forms by curling sheet material constitutes.Motor side main bearing 6c2 formation specific as follows, that is: will possess the PTFE that self lubricity is arranged is resin or the polyimide of self lubricity is arranged is the sheet metal of resin surface layer, and this surface layer is rolled to the inside and formed.In this mode of execution, be that the PTFE that makes infiltration in the porous matter of bronze of sintering on sheet metal have self lubricity is that resin or the polyimide with self lubricity are resin.
Bearing 4c, 6c1,6c2 are made up of the sliding bearing with the above length of 5mm.Therefore, can press in the face of the high capacity of swivel bearing 4c and crank side main bearing 6c1 by safe load, can obtain the high coolant compressor of reliability.
Running shaft 7 is supplied with supplementary bearing 6d, main bearing 6c, swivel bearing 4c and compressor section 2 etc. at the oily path 7d of the central part formation up/down perforation of running shaft 7 with the lubricant oil that will retain in the bottom in the seal container 1 through differential pressure.This oil path 7d is communicated with oily ingress pipe 7c.
In the coolant compressor of said structure, if make running shaft 7 rotations through motor 9, thus the coolant compressor starting, then through the off-centre rotation of crank portion 7b, rotation scroll 4 not rotations ground relative fixed scroll 5 is rotated motion.Therefore, the refrigerant gas of outside freeze cycle is drawn in the compressor section 2 by suction port 5d through suction pipe 11, compresses at the pressing chamber of compressor section 2, is told in the seal container 1 by ejiction opening 5e.The refrigerant gas of ejection is ejected into the outside freeze cycle from spraying pipe 12.
And; If in seal container 1, be full of the refrigerant gas of high pressure, then the lubricant oil of the bottom of seal container 1 utilizes differential pressure, through oily ingress pipe 7c and oily path 7d; Supply in supplementary bearing 6d, main bearing 6c, swivel bearing 4c and the compressor section 2 etc., and lubricated to these slide parts.But, when starting or under the high situation of the ejection pressure of refrigeration agent, the lubricant oil undersupply is prone to take place the damage of wearing and tearing or burn-back etc.Exist especially, press high high capacity partly to be prone to take place wearing and tearing or burn-back equivalent damage at the face of bearing.
Therefore; In this mode of execution; Press the crankshaft bearing 4c of high high capacity portion and crank side main bearing 6c1 to constitute in formation face through carbon bearing by infiltration metal in the pore of the carbonaceous substrate that contains graphite; Can guarantee the reliabilities such as wearability or anti-burn-back property under the boundary lubrication condition, the motor side main bearing 6c2 of the low load portion of simultaneously formation face being forced down intervolves cover through what the sheet material that curls formed, makes cheap.
Next, the swivel bearing 4c that in this mode of execution, uses and the production method of crank side main bearing 6c1 are described.
At first, in vacuum furnace, the raw-material crucible of putting into metal or alloy is heated to the temperature high 100 ℃ with respect to the melt temperature of these metal or alloy, these metal or alloy become the liquation state.Then, in the liquation of these metal or alloy, immerse and to contain the carbonaceous substrate that contains graphite that cylindrical body or cuboid by specific length constitute, pressurize, make these metal or alloy infiltrations in the pore of carbonaceous substrate through nitrogen.Then, from crucible, take out carbonaceous substrate, form drum, form swivel bearing 4c and crank side main bearing 6c1 thus through this carbonaceous substrate is carried out cutting.
In addition, carbonaceous substrate, also can form cylindrical shape through accurate refine (near net shape) after, cut into the length of regulation and form.And carbonaceous substrate also can form cylindrical body or cylindrical body through a kind of extrinsion pressing of accurate refine (near netshape).
Next, be that embodiment 1～7 various bearing performances and comparative example 1～6 comparatively describes to the bearing material that is formed in the swivel bearing 4c that uses in this mode of execution and crank side main bearing 6c1.
The kind and the shore hardness of the infiltration metal among table 1 expression comparative example 1～4 and the embodiment 1～7 (or infiltration alloy).
[table 1]
Table 1
| Project | Sequence number | The infiltration metal | Shore hardness |
| Comparative example | 1 | Do not have | 58 |
| 2 | Do not have | 68 | ? |
| 3 | Do not have | 74 | ? |
| 4 | Do not have | 105 | ? |
| |
1 | |
70 |
| 2 | Bronze | 84 | ? |
| 3 | Bronze+V | 88 | ? |
| 4 | Bronze+Ti | 86 | ? |
| 5 | Bronze | 103 | ? |
| 6 | Sn | 105 | ? |
| 7 | Cu | 115 | ? |
[0060]
| 8 | PTFE system intervolves cover | - | |
| 9 | Polyimide system intervolves cover | - |
At this, the weight content of Sn is 99% among the embodiment 1,6.The weight content of Cu is 99.9% among the embodiment 7.Weight content in embodiment's 2～5 medium bronze (BC3) is that Sn is 10%, zinc be 2% and Pb be 0.2%, remainder is a copper.In addition, the amount of V and Ti respectively is 0.1% with respect to alloy in embodiment 3,4.
In addition, do not have the porosity of bearing material of the comparative example 1～4 of infiltration metal, as after state shown in Figure 7 be 6～11%, the big more hardness of the porosity is low more.The porosity before the carbonaceous substrate infiltration is with volume fraction, and embodiment 1～4 is 11%, embodiment 5～7 is 6%.The porosity after this infiltration is with volume fraction, and embodiment 1 is 1.1%, embodiment 2 is 1.2%, embodiment 3 is 0.6%, embodiment 4 is 0.7%, embodiment 5 is 1.3%, embodiment 6 is 1.5%, embodiment 7 is 0.7%.The quantity of graphite of carbonaceous substrate is with weight, and embodiment 1～7 is 35%.The hardness of bearing material of not having the comparative example 1～4 of infiltration metal is according to the amount of the porosity, graphite, spacing, tar etc. and different.
Fig. 3 representes the relation of friction factor under shore hardness and the unlubricated state among comparative example 1～4 and the embodiment 1～7.In Fig. 3, to as unlubricated state, estimate as the friction factor in the gas of the R410A of an example of not chloride refrigeration agent.In addition, from Fig. 3 to Fig. 7, triangle is the bearing material of comparative example, and the circle symbol is embodiment's a bearing material.The numeral that on these symbols, has is comparative example or the sequence number of embodiment in table 1.
Can know that from Fig. 3 embodiment and comparative example are identical, the friction factor under bearing material unlubricated has the tendency that shore hardness diminishes greatly and more more.This tendency is estimated friction situation too in the refrigerant gas of hydrocarbon system.Use the bearing material of bronze (BC3), shore hardness is more than 65, and preferred shore hardness reaches 80 friction factor when above has the tendency that diminishes.
Fig. 4 is illustrated in the relation of shore hardness and abrasion loss under unlubricated in comparative example 1～4 and embodiment's 1～7 the bearing material.High-pressure atmosphere gas abrasion test machine is used in abrasion test; As test film; (10mm * 10mm * 36mm) goes up and forms carbonaceous substrate, on operation strip, forms the carburizing and quenching material of the structural steel of SCM415 at fixed plate; In with face pressure 9.8MPa, Sliding velocity 1.2m/s, R410A refrigeration agent atmosphere, carried out the abrasion loss behind the determination test 10 hours.From Fig. 4, can know, the shore hardness of bearing material high more, abrasion loss is few more.Use the bearing material of bronze (BC3) can know that shore hardness is more than 65, preferred shore hardness diminishes in 80 abrasion loss when above.
Fig. 5 is illustrated in the relation of shore hardness and friction factor in lubricant oil in comparative example 1～4 and embodiment's 1～7 the bearing material.Clearly can know like Fig. 5, the comparative example 2～4 of the metal that do not infiltrate, though shore hardness more than 65, friction factor is up to more than 0.1.This is because because the porosity of the bearing material of comparative example 1～4 is up to as shown in Figure 7, so the slip in lubricant oil, oil cuts off and oil film attenuation and become Mixed lubrication, and is not preferred.Use the bearing material of bronze, shore hardness is more than 65, and preferred shore hardness is that the bearing material friction factor more than 80 is little.Embodiment 5 be to use with bronze (BC3) as the metal that infiltrates the bearing material, the friction factor in the lubricant oil is low.
Fig. 6 is illustrated in the relation of shore hardness and abrasion loss in lubricant oil in comparative example 1～4 and embodiment's 1～7 the bearing material.In this Fig. 6, be illustrated in the Mixed lubrication of R410A refrigeration agent+artificial oil, with the Sliding velocity of 1.2m/s, face is pressed maximum 98MPa, with the abrasion loss of the anti-load test stabilization of the loading speed load of 0.15MPa/s.Use the bearing material of bronze (BC3), shore hardness is more than 65, and the abrasion loss of the preferred bearing material of shore hardness more than 80 is few.Embodiment 5 uses the bearing material of bronze (BC3) as the infiltration metal, and the abrasion loss in the lubricant oil is minimum.Therefore, can judge the high more suitable more bearing material of doing of shore hardness.
Fig. 7 is illustrated in the relation of friction factor in residue gas porosity and the abrasion test under the harsh conditions in lubricant oil in comparative example 1～4 and embodiment's 1～7 the bearing material.Use artificial oil as lubricant oil, this oil is fit to the R410A chlorofluoromethane refrigerant.
The mensuration of this porosity uses porosimeter 2000 types of FISONS society's system ((strain) ァ system コ) to measure.The pore distribution curve that this method is taked is calculated the porosity through " accumulation pore volume " * " volume density " * 100 (%).Can confirm that the friction factor that in the big more lubricant oil of the more little oil film confining force of the porosity is little.In addition, the embodiment or the embodiment 4 of the alloy of V or Ti added in infiltration in bronze, and reaction generates the carbide (VC, TiC) of V or Ti during infiltration, improves with the wellability of carbonaceous substrate, improves the oil film confining force in lubricated, and friction factor diminishes.After the surface of carbonaceous substrate that the alloy of V or Ti is added in infiltration is observed with scanning electron, confirm V or the carbide of Ti on carbonaceous substrate and alloy interface.
What Fig. 8 represented is the relation of the friction factor of infiltration metal and the unlubricated oil condition under the harshest lubricating condition.The shore hardness of the carbonaceous substrate before the numeral infiltration metal among the figure.Even the shore hardness of the carbonaceous substrate before the infiltration is different, according to the difference of infiltration metal and the tendency of different friction factor is roughly the same.Judging melting point is the friction factor with degree at the Cu more than 900 ℃ or Cu alloy and low melting point metal.
In addition, use copper, even other refractory metal if possible infiltrates, through also realizing wear resistance performance and low friction with the carbonaceous substrate combination as high melting point material.
In this mode of execution,, be employed in and carry out pressing mode infiltration metal when infiltrating carbonaceous substrate in the molten metal as the process of infiltration.In this process, reduce melting point certainly as much as possible and can effectively improve generative nature.Therefore, in Cu, add Sn and can reduce some melting points making bearing materials.In the infiltration metal, use alloy can make the intensity that improves the infiltration metal, also can reach the effect that improves all hardness of bearing.And, add to improve the element of infiltration metal cutting property, can make the fine finishing state smoothing of friction surface of bearing material and good, can constitute the higher bearing portion of reliability.
What Fig. 9 represented is, about what constitute by the carbonaceous substrate that contains graphite, and the bearing material of infiltration bronze (BC3) or Cu therein, the relation between each graphite containing ratio and unlubricated friction coefficient.No。The 5th, described embodiment 5,5-1～5-4 is a data, supplemental.Such graphite containing ratio as shown in Figure 9 accounts for 20～50% weight, and the friction factor that particularly accounts for 20～40% weight is a minimum.
That shown in Figure 10 is the abrasion test result of carbon bearing in R410A refrigeration agent environment who intervolves cover and embodiment 5 of embodiment 8 PTFE system.Intervolve the experiment face of cover, bronze exposes rate and is adjusted into 36%.External pressure is that 0.5MPa, Sliding velocity are 1.2m/s, and experimental period is target 2 hours, the abrasion loss behind the determination experiment.Abrasion loss is in the 10MPa in low load field; Embodiment 8 the abrasion loss that intervolves cover is few; But under face is pressed to 20MPa; The abrasion loss of embodiment 5 carbon bearing is few, and the wear resistance performance in carbon bearing high capacity field under rigorous environment of judging the embodiment 5 of high hardness is superior to the cover that intervolves that hardness is low, heat resisting temperature is low.
Figure 11 is the carbon element material that intervolves cover and embodiment 5 of embodiment 8 PTFE system; In the Mixed lubrication of R410A refrigeration agent+artificial oil; With the Sliding velocity of 1.2m/s,, the face pressure, representes the abrasion loss of the anti-loading experiment of load till reaching 98MPa with the loading speed of 0.15MPa/s.Even be the abrasion loss under the situation of the load of the 98MPa in high capacity field pressing up to face under the lubricating status that has oil, the abrasion loss of embodiment's 5 that can judgement place high hardness carbon bearing material is few, and wear resistance performance is good.
What Figure 12 represented is, embodiment 8 PTFE system intervolves cover, embodiment's 9 the intervolving cover, reach embodiment 5 carbon bearing material of polyimide system, with the face pressure be 9.8MPa, abrasion loss during abrasion test in the carbon dioxide coolant environment.The bronze that PTFE system intervolves cover experiment face exposes rate and is adjusted into 36%.On the other hand, do not expose bronze intervolving on the cover experiment face of polyimide system.The friction amount is that the order that intervolves cover reduces successively according to the polyimide that intervolves cover＜embodiment 9 of carbon bearing material＜embodiment's 8 of embodiment 5 PTFE system.As above, face is pressed and to be the high-pressure situations of 9.8MPa, and carbon bearing material that can judgement place embodiment 5 has good wear resistance performance.
What Figure 13 represented is that the polyimide system that embodiment 8 PTFE system intervolves cover, embodiment 9 intervolves cover, reaches embodiment 5 carbon bearing material, the average friction coefficient when face is pressed to the abrasion test in 9.8MPa, the carbon dioxide coolant environment.The bronze that PTFE system intervolves cover experiment face exposes rate and is adjusted into 36%.On the other hand, do not expose bronze intervolving on the cover experiment face of polyimide system.Average friction coefficient is that the order that intervolves cover reduces successively according to the polyimide that intervolves cover＜embodiment 9 of carbon bearing material＜embodiment's 8 of embodiment 5 PTFE system with abrasion loss equally.As above, face is pressed and to be the high-pressure situations of 9.8MPa, and the friction of carbon bearing material that can judgement place embodiment 5 is low.
Secondly, be the carbon bearing of the 14mm swivel bearing 4c place that is used in the real machine compressor, be that the carbon bearing of 21.5mm is used in crank side main bearing 6c1 place, the experimental result of overlapping the coolant compressor that is used for motor side main bearing 6c2 place that intervolves that is describes with embodiment 8 PTFE for length embodiment 5 length with embodiment 5.This experiment is that the simulation bearing in R410A refrigeration agent and artificial oil starts the harshness experiment that stops.This result, even in the swivel bearing side of swivel bearing 4c or the abrasion that also do not note abnormalities of the crank side end of crank side main bearing 6c1, bearing 4c, bearing 6c1, bearing 6c2 are all complete, can guarantee the reliability of coolant compressor.
Even this experiment is implemented in the environment of carbon dioxide coolant and artificial oil; Even in the swivel bearing side of swivel bearing 4c or the crank side end of crank side main bearing 6c1; Abrasion do not note abnormalities yet; Bearing 4c, bearing 6c1, bearing 6c2 are all complete, can guarantee the reliability of coolant compressor.
Secondly, embodiment 5 length is the carbon bearing of the 14mm swivel bearing 4c place that is used in the real machine compressor, is that the carbon bearing of 21.5mm is used in crank side main bearing 6c1 place, embodiment 9 polyimide intervolving of being overlapped is used for motor side main bearing 6c2 place and experimentizes with embodiment 5 length.This experiment is that the simulation bearing in R410A refrigeration agent and artificial oil starts the harshness experiment that stops.This result, even in the swivel bearing side of swivel bearing 4c or the abrasion that also do not note abnormalities of the crank side end of crank side main bearing 6c1, bearing 4c, bearing 6c1, bearing 6c2 are all complete, can guarantee the reliability of coolant compressor.
Even this experiment is implemented in the environment of carbon dioxide coolant and artificial oil; Even in the swivel bearing side of swivel bearing 4c or the crank side end of crank side main bearing 6c1; Abrasion do not note abnormalities yet; Bearing 4c, bearing 6c1, bearing 6c2 are all complete, can guarantee the reliability of coolant compressor.
According to described mode of execution; Even the most suitable attenuating friction factor of content of graphite in boundary lubrication condition in the carbonaceous substrate of very difficult burn-back and raising wear resistance performance; In the pore of this carbonaceous substrate in order in lubricant oil, to form oil film and the metal that infiltrates at an easy rate; And the composition and the tissue of the infiltration metal beyond lead and the antimony to lower friction factor and obtain wear resistance performance and adjust the infiltration amount in order to make, and obtain the good bearing of sliding properties; Split by attenuation owing to rub for graphite in the carbonaceous substrate, can lower friction factor.Because when the content of graphite is a lot of in high capacity, the become ability of the soft opposing deformation of matter of carbonaceous substrate self increases friction and increases, and abrasion simultaneously increase, so the content of graphite should be below 50%, better content is below 35%.And; Because the content of graphite of carbonaceous substrate was less than this carbonaceous substrate hardening in 20% o'clock; With the metal material that wearing and tearing rub with it, the content of said graphite should be between 20～50%, and better content is between 20～35%; Can obtain low friction and the high bearing of wear resistance performance, can provide reliability high coolant compressor.In addition, the length of swivel bearing 4c and crank side main bearing 6c1 can allow that when 5mm is above the face pressure of high capacity obtains the coolant compressor of high reliability.
In addition, according to this mode of execution, be exposed to the coolant compressor under the unlubricated or harsh sliding condition; For the carbonaceous substrate that prevents that friction factor is little, wear resistance performance is good; Pore removal of lubricant residual in being difficult to through the carbonaceous substrate that is containing graphite under the unlubricated or harsh sliding mode forms oil film, in the pore of carbonaceous substrate, contain lead and antimony weight each 1%; The bearing of the bearing material formation coolant compressor that the weight of selecting a kind of metal VIII family except IB family, Fe and the Sn or using infiltration V, Ti forms at the alloy 0.2% below; The hardness of this bearing is shore hardness, reaches 65～120, and better reaches more than 80; Optimally can reach more than 100; Under unlubricated or harsh sliding condition, keep very little friction factor, and abrasion are suppressed at inferior limit, the coolant compressor of high reliability and long life can be provided.In addition; Consider under the situation of yielding capacity, because shore hardness reaches 90 declines of processability when above, so the shore hardness of this bearing material is between 69～90; Better between 80～90, can provide to possess wear resistance performance and merger possesses productive coolant compressor.
In addition, the content of lead and antimony should be below 0.5%, and optimal content is zero, but the JIS Dimension stock can be used for producing.
In addition, according to this mode of execution, decide under the operating condition the normal of coolant compressor; Even running under the state that lubricant oil enriches; Also will the pore of bearing material be controlled at state seldom, just, the volume of the porosity that contains the carbonaceous substrate of graphite is 0.05～2%; Because can control the abrasion that form stable lubricant film and take place, thereby obtain the coolant compressor of long life.
In addition, according to this mode of execution, at the pore of the carbonaceous substrate that is used for swivel bearing 4c and crank side main bearing 6c1; In the alloy of infiltration, add the V or the Ti of 0.2% weight; Can improve the wellability with carbonaceous substrate, the porosity diminishes, and forms more stable lubricant film; Can suppress abrasion, obtain the coolant compressor of high reliability.
In addition; According to this mode of execution; Because the metal that in the carbonaceous substrate of swivel bearing 4c and crank side main bearing 6c1, infiltrates and the melting point of alloy reach more than 900 ℃, under the situation that continues harsh sliding mode, even temperature raises; Also can keep lubricity and wear resistance performance, improve the reliability of coolant compressor.
IB family is Cu, Au, and VIII family is Co, Ru, Rh, Pd, Os, Ir, Pt, therefrom selects Cu, Au, Co, Ni.And cupric 80～90%, tin 5～11% and zinc are below 3% in the alloy, and lead tolerance is below 1.0%, and better is at the alloy below 0.5%.These metals are difficult to form compound with carbon, have high abrasion resistance and anti-burn-back property, and infiltration easily.
Because in carbonaceous substrate, there is pore, lubricant oil flows in this pore.Because oil film disappears thus, so infiltration is to environment and the human body little copper that exerts an influence.Have only the infiltration portion matter of copper soft,, add alloy element and strengthen welding and prevent abrasion because weld easily through the part of friction copper.Welding disappears, even friction factor is diminished, uses the coolant compressor that can obtain high reliability as bearing.
In addition; According to this mode of execution; Because the metal that in the carbonaceous substrate of swivel bearing 4c and crank side main bearing 6c1, infiltrates and the melting point of alloy reach more than 900 ℃, under the situation that continues harsh sliding mode, even temperature raises; Also can keep lubricity and wear resistance performance, improve the reliability of coolant compressor.
The present invention is applicable to that effectively the compressor for use in refrigeration system, compressor used for refrigerator and the water-heating machine that require anti-burn-back property or wear resistance performance use compressor.
Claims (12)
1. coolant compressor, it possesses in seal container:
Compressor section, the refrigeration agent that its compression is not chloride;
Running shaft, it drives said compressor section;
Bearing, it carries out the axle supporting to said running shaft;
Motor rotates said running shaft,
Said running shaft has main shaft part that is fixed on the said motor rotor and the crank portion that engages with said compressor section,
The bearing that said running shaft is carried out the axle supporting has the main bearing of the said main shaft part of axle supporting and the crankshaft bearing of the said crank portion of axle supporting,
Said coolant compressor is characterised in that,
Said main bearing is made up of crank side main bearing and the motor side main bearing that is adjacent to this crank side main bearing,
Said crankshaft bearing and the said crank side main bearing of pressing high high capacity portion as face is made up of the carbon bearing of infiltration metal in the pore of the carbonaceous substrate that contains graphite,
The cover that intervolves that the said motor side main bearing of the low load portion of forcing down as face forms so that sheet material is curled constitutes.
2. coolant compressor as claimed in claim 1 is characterized in that,
Said compressor section makes erectting on the base plate to be provided with the fixedly scroll of vortex shape cover plate and on base plate, to erect and is provided with the rotation scroll of vortex shape cover plate with separately cover plate engagement and constitute,
Said crankshaft bearing is arranged in the hub portion that the anti-cover plate to said rotation scroll is provided with side-prominently,
Said main bearing more supports said running shaft axle near the compressor section side than said motor,
Said running shaft has and utilizes differential pressure to supply to the oily path of said crankshaft bearing and said main bearing the lubricant oil that retains in the said seal container.
3. coolant compressor as claimed in claim 1 is characterized in that,
Said intervolve cover be with possess the PTFE that self lubricity is arranged be resin or self lubricity arranged contain graphite or MoS
2Deng polyimide be the sheet metal of the surface layer of resin, this surface layer is constituted inboard mode, curling is shaped.
4. coolant compressor as claimed in claim 3 is characterized in that,
Said intervolve cover have PTFE that infiltration in the porous matter of the bronze on being sintered in said sheet metal has a self lubricity be resin or have a self lubricity contain graphite or MoS
2Deng polyimide be the surface layer of resin.
5. like claim 3 or the described coolant compressor of claim 4, it is characterized in that,
Said crankshaft bearing and said crank side main bearing are that master's the carbon bearing of alloy infiltration in the pore of the carbonaceous substrate that contains 20～50 weight % graphite constitutes by select the VIII family and the Sn that make except IB family, Fe a kind of or with these metals.
6. like claim 3 or the described coolant compressor of claim 4, it is characterized in that,
Said crankshaft bearing and said crank side main bearing by select the VIII family and the Sn that make except IB family, Fe a kind of or with these metals be master's alloy infiltration in the pore of the carbonaceous substrate that contains graphite, and shore hardness is that 65～120 carbon bearing constitutes.
7. coolant compressor as claimed in claim 6 is characterized in that,
Said crankshaft bearing and said crank side main bearing by select the VIII family and the Sn that make except IB family, Fe a kind of or with these metals be master's alloy infiltration in the pore of the carbonaceous substrate that contains graphite, and the porosity is that the carbon bearing of 0.05%～2 volume % constitutes.
8. like claim 3 or the described coolant compressor of claim 4, it is characterized in that,
Said crankshaft bearing and said crank side main bearing are main by select VIII family except IB family, Fe and the Sn a kind of or with these metals, and the V and the carbon bearing of at least a alloy infiltration in the pore of the carbonaceous substrate that contains graphite of Ti that contain below the 0.2 weight % constitute.
9. coolant compressor according to claim 1 is characterized in that,
Said refrigeration agent is any one a refrigeration agent in R410A, carbon dioxide, the propane.
10. an air conditioner is characterized in that,
Use each described coolant compressor in the claim 1～9.
11. a refrigerating machine is characterized in that,
Use each described coolant compressor in the claim 1～9.
12. a water-heating machine is characterized in that,
Use each described coolant compressor in the claim 1～9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006284742A JP4995534B2 (en) | 2006-10-19 | 2006-10-19 | Refrigerant compressor |
| JP2006-284742 | 2006-10-19 | ||
| JP2006284742 | 2006-10-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101165346A CN101165346A (en) | 2008-04-23 |
| CN101165346B true CN101165346B (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101816303A Expired - Fee Related CN101165346B (en) | 2006-10-19 | 2007-10-19 | Refrigerant compressor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4995534B2 (en) |
| KR (1) | KR101413619B1 (en) |
| CN (1) | CN101165346B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009154151A1 (en) * | 2008-06-16 | 2009-12-23 | 三菱電機株式会社 | Scroll compressor |
| JP2010084551A (en) * | 2008-09-30 | 2010-04-15 | Hitachi Appliances Inc | Refrigerant compressor |
| JP5019134B2 (en) * | 2009-03-25 | 2012-09-05 | 株式会社デンソー | Fuel injection pump |
| JPWO2015025416A1 (en) * | 2013-08-23 | 2017-03-02 | 株式会社日立製作所 | Rotating machinery and refrigeration cycle equipment |
| JP6539428B2 (en) * | 2014-03-06 | 2019-07-03 | 大豊工業株式会社 | Bearings and scroll type fluid machinery |
| CN104481872A (en) * | 2014-11-14 | 2015-04-01 | 宁波永灵航空配件有限公司 | Static scroll plate on scroll compressor, and production method thereof |
| CN104976127A (en) * | 2015-07-09 | 2015-10-14 | 广东美芝制冷设备有限公司 | Compressor of air conditioner system and air conditioner system with compressor |
| BE1024712B1 (en) | 2016-11-03 | 2018-06-07 | Atlas Copco Airpower Nv | Drive for a compressor element and water-injected compressor device equipped with it |
| JP2022043621A (en) * | 2020-09-04 | 2022-03-16 | 日立グローバルライフソリューションズ株式会社 | Hermetic compressor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3050708B2 (en) * | 1992-12-07 | 2000-06-12 | 株式会社日立製作所 | Bearing oil supply device for scroll compressor |
| JPH11107942A (en) * | 1997-09-30 | 1999-04-20 | Sanyo Electric Co Ltd | Scroll type compressor |
| JP3878835B2 (en) * | 2000-10-27 | 2007-02-07 | 株式会社日立製作所 | Refrigerant compressor, air conditioner and refrigerator using the same, and bearing thereof |
| JP2004132250A (en) * | 2002-10-10 | 2004-04-30 | Matsushita Electric Ind Co Ltd | Bearing for compressor, and compressor |
-
2006
- 2006-10-19 JP JP2006284742A patent/JP4995534B2/en not_active Expired - Fee Related
-
2007
- 2007-10-18 KR KR1020070105122A patent/KR101413619B1/en not_active IP Right Cessation
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Also Published As
| Publication number | Publication date |
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| KR101413619B1 (en) | 2014-07-01 |
| KR20080035492A (en) | 2008-04-23 |
| CN101165346A (en) | 2008-04-23 |
| JP2008101538A (en) | 2008-05-01 |
| JP4995534B2 (en) | 2012-08-08 |
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