CN101397995A - Refrigerant compressor - Google Patents
Refrigerant compressor Download PDFInfo
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- CN101397995A CN101397995A CNA2008102109501A CN200810210950A CN101397995A CN 101397995 A CN101397995 A CN 101397995A CN A2008102109501 A CNA2008102109501 A CN A2008102109501A CN 200810210950 A CN200810210950 A CN 200810210950A CN 101397995 A CN101397995 A CN 101397995A
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- bearing
- crankshaft
- main bearing
- side main
- coolant compressor
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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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- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The present invention provides a refrigerant compressor which is cheap and does not reduce the processing accuracy and can ensure the reliability, and an air conditioner, a refrigerator and a water heater with the compressor. The refrigerant compressor comprises the following components: a rotating shaft which drives the compressor part, a bearing which supports the rotating shaft, and a motor which rotates the rotating shaft. The rotating shaft is provided with a main shaft part which is fixedly installed on the rotor of motor and a crankshaft part that is clamped on the compressor part. The bearing which supports the rotating shaft is provided with a main bearing that supports the main shaft part and a crankshaft bearing that supports the crankshaft part. The main bearing is composed of a crankshaft side main bearing and a motor side main bearing adjacent with the crankshaft side main bearing. The crankshaft bearing and the crankshaft side main bearing is formed by metal immersed carbon in which the gas hole of carbonous substrate containing graphite is immersed with metal. The motor side main bearing is formed by carbonous non-immersed carbon containing graphite.
Description
Technical field
The present invention relates to a kind of coolant compressor, relate in particular to a kind of coolant compressor that is applicable to that idle call, freezing usefulness and water heater are used.
Background technique
As existing coolant compressor, shown in 2002-No. 147354 communiques of TOHKEMY (patent documentation 1).This coolant compressor has in seal container: to not chloride refrigeration agent carry out compressor for compressing portion, drive the running shaft of this compressor section, the motor that supports the bearing of this running shaft and described running shaft is rotatablely moved.
Running shaft has epitrochanterian main shaft part that is fixed on motor and the crank portion that is fastened on the compressor section.The main bearing that the main shaft part to the compressor section side of motor that has the bearing of running shaft supports and the crankshaft bearing of supporting crankshaft portion.As main bearing and crankshaft bearing, the disclosed resin compounded bearing member that is to use carbon bearing member, resin bearing member or band inner lining plate etc.
Patent documentation 1: 2002-No. 147354 communiques of TOHKEMY
In existing coolant compressor, all use under the situation of carbon bearing at main bearing and crankshaft bearing, there is the expensive problem of carbon bearing price.
In addition, all use at main bearing and crankshaft bearing under the situation of resin compounded bearing member of resin bearing member or band inner lining plate, have reliability problems such as the wearability that is difficult to guarantee under boundary lubrication condition or sintering resistance.
Recently, use refrigeration agents such as R410A, carbon dioxide, propane as refrigeration agent, load for compressor performance is improved with bearing increases, the lubricating film of pressing high parts of lubricating oil to form at face partly disconnects, bearing directly contacts with rotation axis partial ground, becomes so-called boundary lubrication condition easily, especially, since during coolant compressor entry into service (startup) or excessive refrigeration agent sneak into, become boundary lubrication condition easily.
In addition, viewpoint from cost degradation, use metal infiltration carbon bearing, motor side main bearing portion to use under the cheap composite combined that intervolves cover at crankshaft bearing and crankshaft side main bearing, after being pressed into frame, simultaneously internal surface is carried out in the operation of machining, at metal infiltration carbon bearing and intervolving in the cover, exist because of forming difference, the different problems that can not realize good machining accuracy of hardness.
Summary of the invention
The object of the present invention is to provide a kind of coolant compressor and use air conditioner, refrigerating machine and the water heater of this compressor, this coolant compressor cheaply and not can make machining accuracy descend and can guarantee reliability.
For realizing described purpose, the coolant compressor of expression the present invention first mode, in seal container, have: not chloride refrigeration agent is carried out compressor for compressing portion, drives the running shaft of described compressor section, the bearing of the described running shaft of supporting and the motor that described running shaft is rotatablely moved
Described running shaft has epitrochanterian main shaft part that is fixedly mounted on described motor and the crank portion that is fastened on the described compressor section, and the bearing that supports described running shaft has the main bearing of the described main shaft part of supporting and the crankshaft bearing of the described crank portion of supporting,
And, described main bearing is made of crankshaft side main bearing and the motor side main bearing adjacent with this crankshaft side main bearing, described crankshaft bearing and described crankshaft side main bearing are made of the carbon bearing of the metal that infiltrated in the pore of the carbonaceous substrate that contains graphite, and described motor side main bearing does not constitute by having infiltration carbon or metal infiltration carbon.
In addition, the coolant compressor of other modes, in seal container, have: not chloride refrigeration agent is carried out compressor for compressing portion, drive the running shaft of described compressor section, the motor that supports the bearing of described running shaft and described running shaft is rotatablely moved, described running shaft has epitrochanterian main shaft part that is fixedly mounted on described motor and the crank portion that is fastened on the described compressor section, the bearing that supports described running shaft has the main bearing of the described main shaft part of supporting and the crankshaft bearing of the described crank portion of supporting, described coolant compressor is characterised in that, described main bearing constitutes described crankshaft bearing by crankshaft side main bearing and the motor side main bearing adjacent with this crankshaft side main bearing, described crankshaft side main bearing and described motor side main bearing are made of the metal infiltration carbon bearing of the metal that infiltrated in the pore of the carbonaceous substrate that contains graphite.
The preferred concrete configuration example of described first mode of the present invention is as described below.
(1) described compressor section makes erecting the fixed eddy plate that is provided with vortex-like roll bending on the platen and erect the rotation whirlpool dish that is provided with vortex-like roll bending on platen and constitutes in the mode of separately roll bending engagement,
Described crankshaft bearing is arranged in the hub portion of an opposite side-prominent setting with described roll bending of described rotation whirlpool dish,
Described main bearing passes through described motor at the described running shaft of compressor section side bearing,
Described running shaft has oily path, makes the lubricant oil that will be stored in the described seal container by differential pressure supply to described crankshaft bearing and described main bearing.
(2) described nothing infiltration carbon is made of the carbonaceous of the graphite that contains 10～90 weight %.
(3) described nothing infiltration carbon is 3 * 10 by thermal expansion coefficient
-6/ ℃ formation.
(4) from 1B family, VIII family except that Fe and Sn, selected by in the pore of the carbonaceous substrate that contains 20～50 weight % graphite, having infiltrated a kind of of described crankshaft bearing and described crankshaft side main bearing or constitute based on the carbon bearing of the alloy of these metals.
(5) from 1B family, VIII family except that Fe and Sn, selected by in the pore of the carbonaceous substrate that contains graphite, having infiltrated a kind of of described crankshaft bearing and described crankshaft side main bearing or based on the alloy of these metals, and shore hardness is that 65～120 carbon bearing constitutes.
(6) from 1B family, VIII family except that Fe and Sn, selected by in the pore of the carbonaceous substrate that contains graphite, having infiltrated a kind of of described crankshaft bearing and described crankshaft side main bearing or based on the alloy of these metals, and the porosity is that the carbon bearing of 0.05～2 volume % constitutes.
(7) from 1B family, VIII family except that Fe and Sn, selected by in the pore of the carbonaceous substrate that contains graphite, having infiltrated a kind of of described crankshaft bearing and described crankshaft side main bearing or based on these metals, and the carbon bearing that contains following V of 0.2 weight % and at least a alloy among the Ti constitutes.
(8) described refrigeration agent is any refrigeration agent in R410A, carbon dioxide, the propane.
In addition, the preferred concrete configuration example of mode of the present invention is as follows.
In addition, the preferred concrete configuration example of second mode of the present invention is as follows.
(9) especially, the described metal infiltration carbon of the motor side main bearing of other mode is made of the carbonaceous of the graphite that contains 50～90 weight %.
(10) especially, to constitute shore hardness be 60～90 to the described metal infiltration carbon of the motor side main bearing of other mode.
(11) especially, to constitute the porosity be 0.05～2 volume % to the described metal infiltration carbon of the motor side main bearing of other mode.
In addition, Third Way of the present invention is first mode of use the invention described above and the air conditioner of any coolant compressor in the preferred concrete example thereof.
In addition, cubic formula of the present invention is first mode of use the invention described above and the refrigerating machine of any coolant compressor in the preferred concrete example thereof.
In addition, the 5th mode of the present invention is first mode of use the invention described above and the water heater of any coolant compressor in the preferred concrete example thereof.
The invention effect
According to the present invention, can access air conditioner, refrigerating machine and water heater cheaply a kind of and that do not make machining accuracy descend and also can guarantee the coolant compressor of reliability and use this coolant compressor.
Description of drawings
Fig. 1 is the sectional arrangement drawing of the coolant compressor of one embodiment of the present invention;
Fig. 2 is the major component amplification profile of the coolant compressor of Fig. 1;
Fig. 3 is the figure of the relation between the shore hardness of the embodiment of bearing member of the expression coolant compressor that is used for Fig. 1 and comparative example and the friction factor when unlubricated;
Fig. 4 is the figure of the relation between the shore hardness of the embodiment of bearing member of the expression coolant compressor that is used for Fig. 1 and comparative example and the fixed plate wear extent when unlubricated;
Fig. 5 is embodiment and the shore hardness of comparative example and the figure of the relation between the friction factor in the lubricant oil of bearing member that expression is used for the coolant compressor of Fig. 1;
Fig. 6 is embodiment and the shore hardness of comparative example and the figure of the relation between the wear extent in the lubricant oil of bearing member that expression is used for the coolant compressor of Fig. 1;
Fig. 7 is embodiment and the porosity of comparative example and the figure of the relation between the friction factor of bearing member in lubricant oil of bearing member that expression is used for the coolant compressor of Fig. 1;
Fig. 8 is embodiment's the fusing point of bearing member of the expression coolant compressor that is used for Fig. 1 and the line chart of the relation between the friction factor;
Fig. 9 is embodiment's the graphite containing ratio of bearing member of the expression coolant compressor that is used for Fig. 1 and the figure of the relation between the friction factor when unlubricated;
The figure of the comparison of the wear extent when Figure 10 is the embodiment of bearing member of the expression coolant compressor that is used for Fig. 1 and comparative example unlubricated;
Figure 11 be expression be used for Fig. 1 the bearing member of coolant compressor in oil/refrigeration agent and the figure of the wear extent under the 30MPa;
Figure 12 is the figure of the comparison of the embodiment of bearing member of the expression coolant compressor that is used for Fig. 1 and the roughness after the comparative example polishing;
Figure 13 is that face is pressed the porosity under the 30MPa and the figure of wear extent in 9.8MPa and the oil/refrigeration agent in embodiment's the refrigeration agent of bearing member of the expression coolant compressor that is used for Fig. 1;
Figure 14 is the crystallization degree of bearing member of the expression coolant compressor that is used for Fig. 1 and the figure of the wear extent under anti-loading test and the wear test;
Among the figure:
1-seal container; 2-compressor section; 3-balancer weight; 4-rotation whirlpool dish; 4a-platen; 4b, 5b-vortex-like roll bending; 4c-swivel bearing (crankshaft bearing); 4d-back side keyway; 5-fixed eddy plate; 5a-platen; 5d-suction port; 5e-exhaust port; 6A-upper spider; 6B-lower bearing bracket; 6c-main bearing; 6c1-crankshaft side main bearing (carbon bearing); 6c2-motor side main bearing (intervolving cover); 6d-supplementary bearing; 7-running shaft; 7a-main shaft part; 7b-crank portion; 7c-oily ingress pipe; 7d-oily path; 8-Euclidean joint; 9-motor; 9a-stator; 9b-rotor; 10-coolant compressor.
Embodiment
Below, utilize accompanying drawing to describe about the coolant compressor of one embodiment of the present invention.
The coolant compressor 10 of present embodiment as shown in Figures 1 and 2, in seal container 1, has as the main composition key element: not chloride refrigeration agent is carried out compressor for compressing portion 2; Drive the running shaft 7 of this compressor section 2; Support swivel bearing 4c, crankshaft side main bearing 6c1, motor side main bearing 6c2, the supplementary bearing 6d of this running shaft 7; The upper spider 6A of supporting crankshaft side main bearing 6c1, motor side main bearing 6c2; The lower bearing bracket 6B of block bearing 6d and the motor 9 that running shaft 7 is rotatablely moved.
As not chloride refrigeration agent, the refrigeration agent of any one in use R410A, carbon dioxide, the propane.In the storage of the bottom of seal container 1 lubricant oil is arranged.
This coolant compressor 10 is that compressor section 2 is configured in the top, and motor 9 is configured in the below, compressor section 2 is connected the longitudinal type scroll compressor that is provided with and constitutes with motor 9 through vertically disposed running shaft 7.Motor 9 constitutes by being fixed on the stator 9a on the seal container 1 and rotating the rotor 9b that is configured in stator 9a inboard freely.
Between fixed eddy plate 5 and rotation whirlpool dish 4, form pressing chamber.Peripheral part at fixed eddy plate 5 forms suction port 5d, forms exhaust port 5e at central part.Fixed eddy plate 5 is fixed on the upper spider 6A by bolt.Rotation whirlpool dish 4 is configured between fixed eddy plate 5 and the upper spider 6A, and supports by fixed eddy plate 5.
Upper spider 6A waits by welding and is fixed in seal container 1.Fixed eddy plate 5, rotation whirlpool dish 4 and upper spider 6 are made of A1 base alloy, and this A1 base alloy contains cast iron or the Si of 5～15 weight %.
Running shaft 7 has the main shaft part 7a and the crank portion 7b that is fastened on the compressor section 2 on the rotor 9b that is fixedly mounted on motor 9.Balancer weight 3 is set on running shaft 7.Main shaft part 7a connects rotor 9b and extends up and down, and oily ingress pipe 7c is installed in the underpart.Crank portion 7b is arranged on the upper side end of main shaft part 7a integratedly, and on the hub portion 4e of an opposite side-prominent setting with described roll bending of engaging left-hand tools whirlpool dish 4.
The upside of the rotor 9b of main shaft part 7a is by main bearing 6c supporting, and the downside of the rotor 9b of main shaft part 7a is supported by supplementary bearing 6d.Main bearing 6c is made of crankshaft side main bearing 6c1 and the motor side main bearing 6c2 that is adjacent to this crankshaft side main bearing 6c1.
Crankshaft side main bearing 6c1 is made of the carbon bearing of the metal that infiltrated in the pore of the carbonaceous substrate that contains graphite.This crankshaft side main bearing 6c1, specifically constitute by as follows carbon bearing, this carbon bearing is in the pore of the carbonaceous substrate that contains 20～50 weight % graphite, infiltrated from 1B family, VIII family except that Fe and Sn, select a kind of or based on these metals and contain V below the 0.2 weight % and Ti at least a alloy, and shore hardness is 65～120, and the porosity is 0.05～2 volume %.
Motor side main bearing 6c2 is not by there being infiltration carbon bearing, and the carbon bearing of the metal that perhaps infiltrated in the pore of the carbonaceous substrate that contains graphite constitutes.This motor side main bearing 6c2, specifically, not having infiltration carbon is that 65～90 carbon bearing constitutes with the carbonaceous substrate that contains 10～90 weight % graphite by shore hardness promptly.In addition, motor side main bearing 6c2, specifically constitute by as follows carbon bearing, in the pore of the carbon graphite matter base material that contains 50～90 weight % graphite, what infiltrated and selected from 1B family, VIII family except that Fe and Sn is a kind of, perhaps based on these metals and contain V below the 0.2 weight % and the alloy of at least one side among the Ti, and shore hardness is 60～90, and the porosity is the carbon bearing of 0.05～2 volume %.
Crank portion 7b is by being arranged on the swivel bearing 4c supporting of the formation crankshaft bearing in the hub portion 4e.This swivel bearing 4c is made of the carbon bearing of the metal that infiltrated in the pore of the carbonaceous substrate that contains graphite.This swivel bearing 4c specifically is made of as follows carbon bearing, in the pore of the carbon graphite matter base material that contains 20～50 weight % graphite, what infiltrated and selected from 1B family, VIII family except that Fe and Sn is a kind of, perhaps based on these metals and contain V below the 0.2 weight % and the alloy of at least one side among the Ti, and shore hardness is 65～120, and the porosity is the carbon bearing of 0.05～2 volume %.
Swivel bearing 4c, crankshaft side main bearing 6c1, motor side main bearing 6c2 are made of the sliding bearing with the length more than the 5mm.Thus, the face that can allow to be applied to the high load on swivel bearing 4c and the crankshaft side main bearing 6c1 is pressed, thereby can realize the coolant compressor that reliability is high.
Running shaft 7 supplies to supplementary bearing 6d, main bearing 6c, swivel bearing 4c and compressor section 2 etc. for the lubricant oil that will be stored in the bottom in the seal container 1 by differential pressure, is formed with oily path 7d at the central part up/down perforation of running shaft 7.This oil path 7d is communicated with oily ingress pipe 7c.
In the coolant compressor that so constitutes, when 7 rotations of running shaft under the effect of motor 9 and coolant compressor 10 startings, by the off-centre rotation of crank portion 7b, rotation whirlpool dish 4 does not carry out rotation, and is rotated motion with respect to fixed eddy plate 5.Thus, the refrigerant gas of outside refrigeration cycle is inhaled into the compressor section 2 by suction pipe 11 from suction port 5d, is compressed and is discharged in the seal container 1 by exhaust port 5e at the pressing chamber of compressor section 2.The refrigerant gas of discharging is discharged to the outside refrigeration cycle from discharge tube 12.
And, when being full of by the refrigerant gas of high pressure in the seal container 1, the lubricant oil of the bottom of seal container 1 is under the differential pressure effect, by oily ingress pipe 7c and oily path 7d, supply to supplementary bearing 6d, main bearing 6c, swivel bearing 4c and compressor section 2 etc., thereby lubricate their slide part.But, under the high situation of the head pressure of when starting or refrigeration agent, the undersupply of lubricant oil, and wearing and tearing or sintering equivalent damage take place easily.Especially, press high high load part that wearing and tearing or sintering equivalent damage take place easily at the face of bearing.
Therefore, in the present embodiment, constitute crankshaft bearing 4c and the crankshaft side main bearing 6c1 that becomes the high high load portion of face pressure by carbon bearing by the high-melting point metal of in the pore of the carbonaceous substrate that contains 20～50 weight % graphite, having infiltrated, thereby guarantee the reliability of wearability under boundary lubrication condition or sintering resistance etc., and, become the motor side main bearing 6c2 of the low-load portion that face forces down, carry out by the nothing infiltration carbon bearing that contains 10～90 weight % graphite, the compound use that the carbon bearing of refractory metal of perhaps having infiltrated in the pore of the carbonaceous substrate that contains 50～90 weight % graphite constitutes.
The position that applies high load by single loading in bearing portion has on experience respectively, the wearability of carbon bearing, exist with ... quantity of graphite or hardness greatly in high load portion, but interdependent few in low-load portion, thereby the bearing member that on whole bearing lengths, does not need to use the good high price of wearability, by the compound use that the carbon bearing material that wearability is different makes up, can guarantee the reliability of bearing portion.
Be pressed into the carbon bearing in the frame of main bearing side, carry out final fine finishing by mechanical lapping and use.Like this, owing to carry out carbon processing each other by the compound use of main bearing portion, compare with forming the different combinations that intervolves cover, machinability obviously improves, and can not impair machining accuracy under machining.In addition, full bearing length for swivel bearing 4c or main bearing 6c, do not need to use the bearing of refractory metal of as existing, in the carbonaceous substrate that contains 20～50 weight % graphite, having infiltrated, because the omission or the processability of infiltration improve, so productivity improves, and bearing integral becomes cheap.
Secondly, describe for swivel bearing 4c that uses in present embodiment and the manufacture method of crankshaft side main bearing 6c1 and motor side main bearing 6c2.
At first, the crucible of the blank of the metal or alloy of will having packed in vacuum furnace is heated to and exceeds 100 ℃ temperature with respect to the melting point of these metal or alloy, makes these metal or alloy become the liquation state.Below, in the liquation of these metal or alloy, the carbonaceous substrate that contains graphite that will be made of the cylindrical body or the cuboid of specific length immerses, and by nitrogen pressure, makes these metal or alloy infiltrations thus in the pore of carbonaceous substrate.Afterwards, from crucible, take out carbonaceous substrate, this carbonaceous substrate is carried out cutting and forms drum, make swivel bearing 4c and crankshaft side main bearing 6c1 and motor side main bearing 6c2 thus.
And carbonaceous substrate also can cut off forming specific length by after compound molding (Near Net shape) is configured as cylindrical shape simultaneously.And then carbonaceous substrate also can be pushed forming method by of while compound molding, is configured as cylindrical body or cylindrical body.
Below, be various bearing performances of the embodiment 1～7 about constituting the swivel bearing 4c that uses in the present embodiment and the bearing member of crankshaft side main bearing 6c1, and meanwhile with relatively explanation of comparative example 1～4.
The kind and the shore hardness of table 1 expression comparative example 1～4 and embodiment's 1～8 infiltration metal (alloy perhaps infiltrates).
(table 1)
Table 1
At this, be 99% on embodiment 1,6 the Sn weight.Be 99.9% on embodiment 7 the Cu weight.For containing Sn10%, zinc 2% and Pb0.2%, remainder is Cu on embodiment 2～5 bronze (BC3) weight.And embodiment 3,4 V and Ti amount are respectively 0.1% with respect to alloy.
In addition, do not have the bearing member of comparative example 1～3 of infiltration metal and embodiment 8 the porosity, shown in Figure 7ly as described later contain 6～11%, the many more hardness of the porosity are low more.The porosity before the infiltration of carbonaceous substrate, on volume fraction, embodiment 1～3 is 11%, embodiment 5～7 is 6%.The porosity after its infiltration, on volume fraction, embodiment 1 is 1.1%, and embodiment 2 is 1.2%, and embodiment 3 is 0.6%, and embodiment 4 is 7%, and embodiment 5 is 1.3%, and embodiment 6 is 1.5%, and embodiment 7 is 0.7%.
The quantity of graphite of carbonaceous substrate, on the weight, embodiment 1～7 is 35%.The hardness of bearing member of not having the comparative example 1～4 of infiltration metal is according to the difference of the amount of the porosity, graphite, pitch, tar etc. and difference.
Fig. 3 represents comparative example 1～3 and embodiment's 1～8 shore hardness and the relation between the friction factor under the unlubricated state.In Fig. 3,, in the gas of R410A, implemented the evaluation of friction factor as an example of not chloride refrigeration agent as unlubricated state.And from Fig. 3 to Fig. 7, warning triangle is the bearing member of comparative example, and circle mark is embodiment's a bearing member.Being attached to the numeral on these each marks, is the sequence number of expression in comparative example or embodiment's table 1.
The unlubricated friction factor of bearing member is distinguished from Fig. 3, and embodiment and comparative example all are that shore hardness is big more then the tendency that diminishes more.This tendency is also identical with the situation of friction evaluation in the gas of the refrigeration agent of hydrocarbon system.Use the example of bronze (BC3), when shore hardness is more than 65, preferred 80 when above, and a high side has the little tendency of friction factor.
Fig. 4 represent comparative example 1～5 and embodiment 1～8 bearing member shore hardness and unlubricated in the relation of wear extent.Wear test, use hyperbaric environment gas wear testing machine, as test film, (10mm * 10mm * 36mm) is a carbonaceous substrate to fixed plate, but moving plate be SCM415 structural steel soak the carbon quenched materials, in face pressure 9.8MPa, Sliding velocity 1.2m/s, R410A refrigeration agent environmental gas, carried out the wear extent behind the determination test 10 hours.Wear extent distinguishes that from Fig. 4 the shore hardness of bearing member is got over Gao Zeyue and diminished.Use the example of bronze (BC3), when shore hardness is more than 65, preferred 80 when above, distinguishes that high side's wear extent is little.
Fig. 5 represents comparative example 1～3 and embodiment's 1～8 shore hardness of bearing member and the relation between the friction factor in the lubricant oil.As Fig. 5 clearly as can be known, the comparative example 2,3 and the embodiment 8 of the metal that do not infiltrate, although shore hardness is more than 65, friction factor is very high to be more than 0.1.
This is because because the porosity of the bearing member of comparative example 1～4 is high as shown in Figure 7, so oil is cut open and the oil film attenuation in the slip in lubricant oil, become Mixed lubrication, so not preferred.Use the example of bronze (BC3), shore hardness is more than 65, preferred bearing member more than 80, and friction factor is little.Embodiment 5 uses bronze (BC3) as the infiltration metal, and the friction factor in the lubricant oil is low.
Fig. 6 represents comparative example 1～3 and embodiment's 1～8 the shore hardness of bearing member and the relation of the wear extent in lubricant oil.In this Fig. 6, in the Mixed lubrication of R410A refrigeration agent+artificial oil, under the Sliding velocity of expression 1.2m/s, face is depressed into 98MPa and the wear extent of the anti-loading test of loading under the load speed of 0.15MPa/s.
Use the example of bronze (BC3), shore hardness is more than 65, preferred bearing member more than 80, and wear extent is little.Embodiment 5 uses bronze (BC3) as the infiltration metal, and the wear extent in the lubricant oil is minimum.Therefore, distinguish that shore hardness is high more, is suitable as bearing material more.
Fig. 7 represents comparative example 1～3 and embodiment's 1～8 the remaining porosity of bearing member and the relation between the friction factor under the wear test under the too harsh conditions in the lubricant oil.Use artificial oil as lubricant oil, this oil is suitable for the R410A freon refrigerant.
The mensuration of this porosity, (Port ロ シ メ-) 2000 types carry out the porosimeter of use FISONS company's manufacturing [(strain) amuko].According to the pore distribution curve of taking, calculate the porosity by this method by " accumulation pore volume " * " volume density " * 100%.Can confirm: the porosity is more little, the oil film confining force improve more and the friction factor in lubricant oil more little.
In addition, the infiltrated embodiment 3 or the embodiment 4 of the alloy that in bronze, added V or Ti, when infiltration, make the carbide (VC, TiC) of V or Ti, carbonaceous substrate and wettability improve, compare with embodiment 1 who does not add V or Ti or embodiment 5, the porosity diminishes, and the raising of the oil film confining force in lubricated, and friction factor diminishes.Observe the result on surface of the carbonaceous substrate of this alloy of adding V or Ti of having infiltrated with scanning electron, on carbonaceous substrate and alloy interface, confirmed the carbide (VC, TiC) of V or Ti.
Fig. 8 represent the to infiltrate fusing point of metal and the harshest lubricating condition is relation between the friction factor under the unlubricated state.The shore hardness of the carbonaceous substrate before the numeral infiltration metal among the figure.Even the shore hardness difference of the carbonaceous substrate before the infiltration, the tendency of the friction factor that the difference of infiltration metal causes is also identical substantially.Distinguished that friction factor is and the same degree that at fusing point is low melting metal in Cu more than 900 ℃ or the Cu alloy.
And, use Cu as the high material of fusing point, even but other refractory metal also can infiltrate, by realizing wearability and low friction with the carbonaceous substrate combination.
In the present embodiment, as the technology of infiltration, adopt by dipping carbonaceous substrate in molten metal and pressurization simultaneously, the method for infiltration metal.In this technology, reduced fusing point effective to the raising of productivity as far as possible originally.
Therefore, preferably in Cu, add Sn and fusing point reduced slightly make bearing member.The infiltration metal is by using alloy, and the intensity of infiltration metal also improves, so improve also effective to the hardness of bearing integral.And then by add the element that machinability is improved in the infiltration metal, it is level and smooth and good that the state of machining on the rubbing surface surface of bearing member becomes, and can constitute the higher bearing member of reliability thus.
Fig. 9 represents the relation between each graphite containing ratio and the unlubricated friction coefficient for the bearing member of the carbonaceous substrate that constitutes graphitiferous and wherein infiltrated bronze (BC3) or Cu.No.5 is that described embodiment 5,5-1～5-4 is a supplemental data.
As shown in Figure 9, friction factor represents that the graphite containing ratio is 20～50 weight %, especially is the minimum under 20～40 weight %.
Figure 10 represents embodiment 4, embodiment 2, embodiment 5 and embodiment's 8 wear test result.Test is pressed under 9.8MPa and the speed 1.2m/s at R410A refrigeration agent, face and was carried out 2 hours, and measures wear extent.Embodiment 5 the wear extent of dystectic bronze of having infiltrated in the carbonaceous substrate that contains 20～50 weight % graphite is minimum.Secondly, the embodiment 2 of dystectic bronze that infiltrated in the carbonaceous substrate that contains 50～90 weight % graphite is few.Embodiment 8 the wear extent that contains the carbonaceous substrate of 20～50 weight % graphite, be with the PTFE system of comparative example 4 intervolve the identical substantially wear extent of cover.
Figure 11 represents comparative example 4, embodiment 2, embodiment 5 and embodiment's 8 wear test result.Test mixes at artificial oil/R410A, face is pressed under 30MPa and the speed 1.2m/s and carried out 2 hours.This test is the condition under the situation of imaginary high load.Its result has distinguished, the wear extent that intervolves cover of the PTFE system of comparative example 4 is maximum, the wear extent of embodiment 2, embodiment 5 and embodiment's 8 carbon bearing, it is below 1/2 of comparative example 4, under high-load condition, compare the excelling in abrasion resistance of embodiment 2, embodiment 5 and embodiment's 8 carbon bearing with the cover that intervolves of comparative example 4.
After Figure 12 represents to use polishing belt (lapping tape) #1000 polishing comparative example 4, embodiment 2, embodiment 5 and embodiment's 8 surface, use the roughness Rz (μ m) of the surface roughness instrumentation amount of contact-type.The cover that intervolves of the PTFE system of comparative example 4 demonstrates the most coarse result, but the embodiment 2 of dystectic bronze that in the carbonaceous substrate that contains 50～90 weight % graphite, infiltrated, in the carbonaceous substrate that contains 20～50 weight % graphite, infiltrated dystectic bronze embodiment 5 and contain the embodiment 8 of the carbonaceous substrate of 10～90 weight % graphite, demonstrate roughness substantially with the target of degree.
Figure 13 represents embodiment 5 and embodiment's 8 the porosity and the relation of wear extent.The high-load condition of test simulation on real machine is to press 9.8MPa and simulated the 30MPa of high load with artificial oil/R410A under speed 1.2m/s at the face of having simulated low-load under the speed 1.2m/s with the R410A refrigeration agent.
The face of the high load portion in simulated oil/refrigerant mixed is pressed in the test of 30MPa, and the embodiment 5 of the metal that infiltrated compares the non-constant of abrasiveness with the embodiment 8 of the big nothing infiltration of the porosity.
But, not having in the test of the low-load portion in the R410A refrigeration agent environment of oil in simulation, the embodiment 8 of the nothing infiltration that the porosity is big demonstrates the embodiment's 5 equal above wearabilitys with the little infiltration metal of the porosity.Like this, distinguished that the wearability that does not have the infiltration carbon and the carbon of the metal that infiltrated depends on load face pressure.
Figure 14 represents comparative example 5 and embodiment 2 and embodiment's 5 the degree of graphitization and the relation of the wear extent under anti-loading test and wear test.The degree of graphitization of carbon is obtained by X-ray diffraction, and revises with soil graphite.
Anti-loading test with speed 1.2m/s, has been measured the wear extent that applies when loading 98MPa under 0.15MPa/s in artificial oil/R410A refrigerant mixed.In addition, wear test presses 9.8MPa, speed 1.2m/s to measure the wear extent of test in the time of 2 hours with face in R410A refrigeration agent environment.The face of busy hour is pressed in the wear extent under the harsh anti-loading test, and degree of graphitization becomes big and sharply increases.
On the other hand, the wear extent in R410A refrigeration agent environment under face pressure 9.8MPa changes hardly even degree of graphitization becomes greatly also.Like this, distinguished the wearability of carbon, under low-load region and high-load region, to the interdependent difference of degree of graphitization.
Then, the swivel bearing 4c that the real machine compressor is described uses the carbon bearing of embodiment 5 length 14mm, crankshaft side main bearing 6c1 uses the carbon bearing of embodiment 5 length 21.5mm, the test result of the coolant compressor of the carbon bearing of motor side main bearing 6c2 use embodiment's 8 the carbonaceous substrate that contains 10～90 weight % graphite.
This test is the test of the harshness that stops of starting of simulation bearing in R410A refrigeration agent and artificial oil.Consequently in the crankshaft side end of the swivel bearing side of swivel bearing 4c or crankshaft side main bearing 6c1, also can't see inordinate wear, whole swivel bearing 4c, crankshaft side main bearing 6c1, motor side main bearing 6c2 perfect, thereby can guarantee the reliability of coolant compressor.
After even this real machine test is implemented in the environment of carbon dioxide coolant and artificial oil, in the crankshaft side end of the swivel bearing side of swivel bearing 4c or crankshaft side main bearing 6c1, also can't see inordinate wear, and sound on whole swivel bearing 4c, crankshaft side main bearing 6c1, motor side main bearing 6c2, thereby can guarantee the reliability of coolant compressor.
Below, the swivel bearing 4c that the real machine compressor is described uses the carbon bearing of embodiment 5 length 14mm, crankshaft side main bearing 6c1 uses the carbon bearing of embodiment 5 length 21.5mm, and the test result of the coolant compressor of the carbon bearing of motor side main bearing 6c2 use embodiment's 2 the carbonaceous substrate that contains 50～90 weight % graphite.This test is the test of the harshness that stops of starting of simulation bearing in R410A refrigeration agent and artificial oil.Its result, in the crankshaft side end of the swivel bearing side of swivel bearing 4c or crankshaft side main bearing 6c1, also can't see inordinate wear, whole swivel bearing 4c, crankshaft side main bearing 6c1, motor side main bearing 6c2 perfect, and can guarantee the reliability of coolant compressor.
After even this real machine test is implemented in the environment of carbon dioxide coolant and artificial oil, in the crankshaft side end of the swivel bearing side of swivel bearing 4c or crankshaft side main bearing 6c1, also can't see inordinate wear, whole swivel bearing 4c, crankshaft side main bearing 6c1, motor side main bearing 6c2 perfect, and can guarantee the reliability of coolant compressor.
According to above-mentioned mode of execution, will be in the boundary lubrication condition of high-load region the also content of graphite optimization of the carbonaceous substrate of hard-to-sinter, so that friction factor reduces and wearability is improved, for oil film is formed and the metal that infiltrates in the pore of this carbonaceous substrate easily, and then the composition and the tissue of the infiltration metal beyond adjustment lead and the antimony, the infiltration amount, make friction factor reduce and can obtain wearability, can obtain the good bearing of sliding properties thus, graphite in the carbonaceous substrate is rived by the unfertile land that rubs very, can reduce friction factor thus.
And, in high load when the content of graphite for a long time, carbonaceous substrate itself becomes soft and deformation resistance increases, friction increases, simultaneously because wearing and tearing increase, the content of the graphite of the carbon bearing member that uses at high-load region more preferably is advisable below 35% weight below 50% weight.And then, when content of graphite less than 20 weight %, make the metallic material of the object of friction rub broken because of the carbonaceous substrate hardening, so the content of graphite is preferably 20～50%, more preferably 20～35%, therefore can obtain low friction and the high bearing of wearability, and can provide reliability high coolant compressor.
In addition, in the low-load region of bearing length, making quantity of graphite is 10～90%, is preferably 50～90%, can obtain the high bearing of reliability fully thus.In addition, be more than the 5mm by the length that makes swivel bearing 4c and crankshaft side main bearing 6c1, the face pressure of high load can be allowed thus and the high coolant compressor of reliability can be obtained.
In addition, according to present embodiment, in the coolant compressor under being in unlubricated or harsh sliding condition, even the carbonaceous substrate that friction factor is little and wearability is also good in unlubricated or harsh sliding mode, make the formation of oil film become difficult by the pore removal of lubricant that remains in the carbonaceous substrate that contains graphite under the situation about in lubricant oil, using, in order to prevent this situation, by adopting the infiltrated bearing member of metal or alloy as follows of in the pore of carbonaceous substrate fusion to constitute the bearing of coolant compressor, be that above-mentioned metal is that lead and antimony are respectively done for oneself below the 1 weight %, and from 1B family, a kind of metal of selecting among VIII family except that Fe and the Sn, above-mentioned alloy is the V that adds in above-mentioned metal below the 0.2 weight %, the alloy of Ti, the hardness of this bearing member is preferably 65～120 with shore hardness, more preferably more than 80, most preferably be more than 100, thus under unlubricated or harsh sliding condition, by keeping friction factor tinily, and the restriction wearing and tearing of irreducible minimum ground, thereby can provide high reliability and long-life coolant compressor.
In addition, under the situation of having considered production, when shore hardness becomes 90 when above, because processability descends, so the hardness of this bearing member is preferably 60～90 with shore hardness, more preferably 80～90, the coolant compressor that possesses wearability and also take into account productivity can be provided thus.
In addition, the shore hardness of motor side main bearing is 55～90, can provide the coolant compressor of taking into account wearability and productivity thus.
And, though the content of lead and antimony is preferably below 0.5%, most preferably be 0, produce and go up the preferred JIS of employing gauge material.
In addition, according to present embodiment, under situation about being lubricated to moist property under the permanent operating condition of coolant compressor, also control the pore of bearing member tinily, promptly, the porosity of the carbonaceous substrate that contains graphite by making bearing member is 0.05～2 volume %, can stably form lubricant film thus and suppress wearing and tearing, so can obtain long-life coolant compressor.
In addition, be used for the nothing infiltration carbon of motor side main bearing portion,,,, can obtain having the coolant compressor of reliability so can obtain sufficient lubricating function because be low-load region even the porosity is bigger than 2 volume %.
In addition, according to present embodiment, in the alloy of the pore of the carbonaceous substrate that is used for swivel bearing 4c and crankshaft side main bearing 6c1 infiltration, add V or the Ti of 0.2 weight %, thus, the wettability of carbonaceous substrate improves, and the porosity diminishes, thereby can more stably form lubricant film, wearing and tearing can be suppressed, and the coolant compressor of high reliability can be obtained.
In addition, according to present embodiment, making the metal that infiltrates in the carbonaceous substrate of swivel bearing 4c and crankshaft side main bearing 6c1 and the fusing point of alloy is more than 900 ℃, even temperature rises and also can keep lubricity and wearability under the situation that the sliding mode of harshness continues thus, improve the reliability of coolant compressor.
1B family is made up of Cu, Au, and VIII family is made up of Co, Ni, Ru, Rh, Pd, Os, Ir, Pt, but preferred Cu, Au, Co, Ni.And then alloy on weight, contains copper 80～90%, tin 5～11% and zinc below 3%, and is preferably plumbous below 1.0%, preferred alloy below 0.5%.These metals are difficult to and C forms compound, have high abrasion resistance and sintering resistance, and infiltration easily.
Because in carbonaceous substrate, there is pore, so lubricant oil flows in this pore.Thus because oil film disappears, so when the use of high load portion, the copper little to the influence of environment and human body infiltrates.Have only copper, infiltration portion is soft, because the part of copper is hot sticky easily under rubbing action, strengthens and then prevents hot sticky, wearing and tearing so add alloy element.Hot stickyly under boundary lubrication condition, also friction factor can be reduced by eliminating,, the high coolant compressor of reliability can be obtained by it is used as bearing.
In addition, according to present embodiment, making the metal that infiltrates in the carbonaceous substrate of swivel bearing 4c and crankshaft side main bearing 6c1 and the fusing point of alloy is more than 900 ℃, even temperature rises under the situation that the sliding mode of harshness continues thus, also lubricity and wearability can be kept, the reliability of coolant compressor can be improved.
Industrial applicibility
The present invention can effectively be applicable to the compressor for use in refrigeration system that requires sintering resistance or mar proof, cold Freeze machine with compressor and water heater compressor.
Claims (26)
1. coolant compressor, it has the compressor section of compressed refrigerant, the running shaft that drives described compressor section, the bearing of the described running shaft of supporting and the motor that described running shaft is rotatablely moved in seal container,
Described running shaft has epitrochanterian main shaft part that is fixedly mounted on described motor and the crank portion that is fastened on the described compressor section,
The bearing that supports described running shaft has the main bearing of the described main shaft part of supporting and the crankshaft bearing of the described crank portion of supporting,
Described coolant compressor is characterised in that,
Described main bearing is made of crankshaft side main bearing and the motor side main bearing adjacent with this crankshaft side main bearing,
Described crankshaft bearing and described crankshaft side main bearing are made of the metal infiltration carbon of the metal that infiltrated in the pore of the carbonaceous substrate that contains graphite,
Described motor side main bearing is made of the nothing infiltration carbon of the carbonaceous that contains graphite.
2. coolant compressor as claimed in claim 1 is characterized in that,
Described compressor section makes and is erecting the fixed eddy plate that is provided with vortex-like roll bending on the platen and erecting the rotation whirlpool dish that is provided with vortex-like roll bending with separately roll bending engagement and constitute on platen,
Described crankshaft bearing is arranged in the hub portion of an opposite side-prominent setting with described roll bending of described rotation whirlpool dish,
Described main bearing passes through described motor at the described running shaft of compressor section side bearing,
Described running shaft has oily path, makes the lubricant oil that will be stored in the described seal container by differential pressure supply to described crankshaft bearing and described main bearing.
3. coolant compressor as claimed in claim 1 is characterized in that,
Described nothing infiltration carbon is the carbonaceous that contains the graphite of 10～90 weight %.
4. coolant compressor as claimed in claim 1 is characterized in that,
The shore hardness of described nothing infiltration carbon is 55～110.
5. as the described coolant compressor of claim 1～4, it is characterized in that,
Described crankshaft bearing and described crankshaft side main bearing are made of carbon bearing as follows, infiltrated in the pore of the carbonaceous substrate that contains graphite select from 1B family, VIII family except that Fe and Sn a kind of or based on the alloy of these metals of this carbon bearing.
6. coolant compressor as claimed in claim 5 is characterized in that,
Described crankshaft bearing and described crankshaft side main bearing are the carbonaceous that contains the graphite of 20～50 weight %.
7. coolant compressor as claimed in claim 5 is characterized in that,
Described crankshaft side bearing and described crankshaft side main bearing are that 65～120 carbon bearing constitutes by shore hardness.
8. coolant compressor as claimed in claim 5 is characterized in that,
Described crankshaft bearing and described crankshaft side main bearing are that the carbon bearing of 0.05～2 volume % constitutes by the porosity.
9. as the described coolant compressor of claim 1～4, it is characterized in that,
Described crankshaft bearing and described crankshaft side main bearing are made of carbon bearing as follows, infiltrated in the pore of the carbonaceous substrate that contains graphite select from 1B family, VIII family except that Fe and Sn a kind of or based on these metals and contain V below the 0.2 weight % and at least a alloy among the Ti of this carbon bearing.
10. coolant compressor as claimed in claim 1 is characterized in that,
Described refrigeration agent is any refrigeration agent in R410A, carbon dioxide, the propane.
11. an air conditioner is characterized in that,
Use each described coolant compressor in the claim 1～9.
12. a refrigerating machine is characterized in that,
Use each described coolant compressor in the claim 1～9.
13. a water heater is characterized in that,
Use each described coolant compressor in the claim 1～9.
14. a coolant compressor, it has the compressor section of compressed refrigerant, the running shaft that drives described compressor section, the bearing of the described running shaft of supporting and the motor that described running shaft is rotatablely moved in seal container,
Described running shaft has epitrochanterian main shaft part that is fixedly mounted on described motor and the crank portion that is fastened on the described compressor section,
The bearing that supports described running shaft has the main bearing of the described main shaft part of supporting and the crankshaft bearing of the described crank portion of supporting,
Described coolant compressor is characterised in that,
Described main bearing is made of crankshaft side main bearing and the motor side main bearing adjacent with this crankshaft side main bearing,
Described crankshaft bearing, described crankshaft side main bearing and described motor side main bearing are made of the metal infiltration carbon bearing of the metal that infiltrated in the pore of the carbonaceous substrate that contains graphite.
15. coolant compressor as claimed in claim 14 is characterized in that,
Described compressor section makes and is erecting the fixed eddy plate that is provided with vortex-like roll bending on the platen and erecting the rotation whirlpool dish that is provided with vortex-like roll bending with separately roll bending engagement and constitute on platen,
Described crankshaft bearing is arranged in the hub portion of an opposite side-prominent setting with described roll bending of described rotation whirlpool dish,
Described main bearing passes through described motor at the described running shaft of compressor section side bearing,
Described running shaft has oily path, makes the lubricant oil that will be stored in the described seal container by differential pressure supply to described crankshaft bearing and described main bearing.
16. coolant compressor as claimed in claim 14 is characterized in that,
In the pore of the carbonaceous substrate that contains 50～90 weight % graphite, infiltrated from 1B family, VIII family except that Fe and Sn, select a kind of or of the carbon of described motor side main bearing based on the alloy of these metals.
17. coolant compressor as claimed in claim 14 is characterized in that,
The carbon of described motor side main bearing is select from 1B family, VIII family except that Fe and Sn a kind of or based on the alloy of these metals of having infiltrated in the pore of the carbonaceous substrate that contains graphite, and shore hardness is 60～90 carbonaceous.
18. coolant compressor as claimed in claim 14 is characterized in that,
It is a kind of or based on the alloy of these metals that the carbon of described motor side main bearing has been selected from 1B family, VIII family except that Fe and Sn by having infiltrated in the pore of the carbonaceous substrate that contains graphite, and the porosity is that the carbon bearing of 0.05～2 volume % constitutes.
19. coolant compressor as claimed in claim 14 is characterized in that,
It is a kind of or constitute based on the carbon bearing of the alloy of these metals that described crankshaft bearing and described crankshaft side main bearing have been selected from 1B family, VIII family except that Fe and Sn by having infiltrated in the pore of the carbonaceous substrate that contains 20～50 weight % graphite.
20. coolant compressor as claimed in claim 14 is characterized in that,
It is a kind of or based on the alloy of these metals that described crankshaft bearing and described crankshaft side main bearing have been selected from 1B family, VIII family except that Fe and Sn by having infiltrated in the pore of the carbonaceous substrate that contains graphite, and shore hardness is that 65～120 carbon bearing constitutes.
21. coolant compressor as claimed in claim 14 is characterized in that,
It is a kind of or based on the alloy of these metals that described crankshaft bearing and described crankshaft side main bearing have been selected from 1B family, VIII family except that Fe and Sn by having infiltrated in the pore of the carbonaceous substrate that contains graphite, and the porosity is that the carbon bearing of 0.05～2 volume % constitutes.
22. coolant compressor as claimed in claim 14 is characterized in that,
It is a kind of or based on these metals that described crankshaft bearing and described crankshaft side main bearing have been selected from 1B family, VIII family except that Fe and Sn by having infiltrated in the pore of the carbonaceous substrate that contains graphite, and the carbon bearing that contains following V of 0.2 weight % and at least a alloy among the Ti constitutes.
23. coolant compressor as claimed in claim 14 is characterized in that,
Described refrigeration agent is any refrigeration agent in R410A, carbon dioxide, the propane.
24. an air conditioner is characterized in that,
Use each described coolant compressor in the claim 14～23.
25. a refrigerating machine is characterized in that,
Use each described coolant compressor in the claim 14～23.
26. a water heater is characterized in that,
Use each described coolant compressor in the claim 14～23.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007252950A JP4416816B2 (en) | 2007-09-28 | 2007-09-28 | Refrigerant compressor |
| JP2007252950 | 2007-09-28 | ||
| JP2007-252950 | 2007-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101397995A true CN101397995A (en) | 2009-04-01 |
| CN101397995B CN101397995B (en) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102109501A Expired - Fee Related CN101397995B (en) | 2007-09-28 | 2008-08-15 | Refrigerant compressor |
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| Country | Link |
|---|---|
| JP (1) | JP4416816B2 (en) |
| CN (1) | CN101397995B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032332A (en) * | 2011-10-05 | 2013-04-10 | 日立空调·家用电器株式会社 | Close-type refrigerant compressor and bearing part used by same |
| CN105332892A (en) * | 2014-08-11 | 2016-02-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Reciprocating compressor and refrigerator with reciprocating compressor |
| CN106194659A (en) * | 2016-08-31 | 2016-12-07 | 安徽美芝制冷设备有限公司 | For the bent axle of reciprocating compressor and the reciprocating compressor with it |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3876756B2 (en) * | 2002-04-25 | 2007-02-07 | 株式会社日立製作所 | CO2 refrigerant compressor bearing, compressor using the same, and use thereof |
| JP4433184B2 (en) * | 2004-11-05 | 2010-03-17 | 株式会社富士通ゼネラル | Compressor |
-
2007
- 2007-09-28 JP JP2007252950A patent/JP4416816B2/en active Active
-
2008
- 2008-08-15 CN CN2008102109501A patent/CN101397995B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032332A (en) * | 2011-10-05 | 2013-04-10 | 日立空调·家用电器株式会社 | Close-type refrigerant compressor and bearing part used by same |
| CN103032332B (en) * | 2011-10-05 | 2015-07-15 | 日立空调·家用电器株式会社 | Close-type refrigerant compressor and bearing part used by same |
| CN105332892A (en) * | 2014-08-11 | 2016-02-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Reciprocating compressor and refrigerator with reciprocating compressor |
| CN106194659A (en) * | 2016-08-31 | 2016-12-07 | 安徽美芝制冷设备有限公司 | For the bent axle of reciprocating compressor and the reciprocating compressor with it |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009085039A (en) | 2009-04-23 |
| JP4416816B2 (en) | 2010-02-17 |
| CN101397995B (en) | 2010-12-29 |
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