CN1916419A - Compressor - Google Patents
Compressor Download PDFInfo
- Publication number
- CN1916419A CN1916419A CN 200510092420 CN200510092420A CN1916419A CN 1916419 A CN1916419 A CN 1916419A CN 200510092420 CN200510092420 CN 200510092420 CN 200510092420 A CN200510092420 A CN 200510092420A CN 1916419 A CN1916419 A CN 1916419A
- Authority
- CN
- China
- Prior art keywords
- hard coat
- compressor
- refrigerant
- impeller
- slipper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
A compressor consists of sliding unit and compression element in sealed container. It is featured as forming mixed hard overlay film with high driving fit ability by certain amount of Cr and nitride with one of metals as Ti, Zr, V and Mo; overlaying prepared film on sliding unit to raise its driving fit ability and wearproof ability, compressing refrigerant, utilizing lubricant oil to lubricate said sliding unit.
Description
Technical field
The present invention relates to the compressors for refrigerating plant and air conditioner etc..
Background technique
In recent years, for the compressor for fridge-freezer, air-conditioning device etc. along with high performance, high efficiency, use condition is gradually harsh.
On the other hand, consider the environmental problems such as depletion of the ozone layer, study and gradually realize from the refrigerant containing chlorine such as dicholorodifluoromethane used at present or chloro difluoromethane to the refrigerants transformation such as the HFC series coolant of R134a, R410A without chlorine and hydrocarbon.
In addition, the ester system oil for having intermiscibility with them, ether system oil, their miscella etc. can be enumerated as the lubricating oil used HFC series coolant etc..
But the HFC series coolant without chlorine is excellent in terms of environment, but due to being free of chlorine, therefore iron chloride overlay film will not be formed on the components such as impeller using iron etc. as base material, reduce greasy property, or make the characteristic reduction of the sliding material of compressor.
Therefore, base material as roller, proposal has use to implement material obtained from quenching to cast iron or alloy cast iron, and impeller base material uses stainless steel, tool steel or the material that they have been carried out with the surface treatments such as nitrogen treatment (for example, referring to Patent Documents 1 to 3).
In addition, the hard coats coating such as hard chrome plating and physical vacuum vapour deposition method (PVD method) can also be carried out as the Surface hardening treatment to steel part.
But, refrigerant is the HFC series coolant or hydrocarbon refrigerant of R134a, R410A, when lubricating oil changes to ester system oil or ether system oil, in existing surface treatment, such as when ion Plasma Nitriding Treatment, endurance deficiency is generated, component is prone to wear, or the problems such as generating the degraded matter for deteriorating refrigerator oil, blocking capillary.
In addition, in the case where the hard coats coating processing such as CrN coating processing, overlay film stripping problem in operation or the problem of requiring higher endurance, occur.Therefore, there is the rotary compressor of these impellers there is the case where reliability that cannot keep high for a long time.
The HFC series coolant of R134a or R410A is used instead when lubricating oil is using ester system oil or ether system oil when refrigerant to lead to the problem of following.That is, in existing surface treatment, such as in the case where ion Plasma Nitriding Treatment, due to coefficient of friction height, therefore there are moisture in refrigerating circuit, and when friction generates high temperature, ester system oil or ether system oil are hydrolyzed, generate acid.Moreover, because the acid generated forms the dirts such as metallic soap, therefore the dirt accumulation is produced the sliding part or corrosion, wear of impeller surface the problems such as.
In addition, when lubricating oil uses ester system oil or ether system oil instead, generating following point when refrigerant uses hydrocarbon refrigerant instead.That is, due to coefficient of friction height, therefore there are moisture in refrigerating circuit, and when friction generates high temperature, ester system oil or ether system oil are hydrolyzed in the case where existing surface treatment such as ion Plasma Nitriding Treatment, acid is generated.Moreover, because the acid generated forms the dirts such as metallic soap, therefore the dirt accumulation is produced the sliding part or corrosion, wear of impeller surface the problems such as.
When refrigerant uses carbonic acid gas refrigerant instead, and lubricating oil uses ester system oil or ether system oil instead, following point is generated.That is, due to coefficient of friction height, therefore there are moisture in refrigerating circuit, and when friction generates high temperature, ester system oil or ether system oil are hydrolyzed in the case where existing surface treatment such as ion Plasma Nitriding Treatment, acid is generated.Moreover, because the acid generated forms the dirts such as metallic soap, therefore the dirt accumulation is produced the sliding part or corrosion, wear of impeller surface the problems such as.
Patent document 1: Japanese Laid-Open Patent Publication 2-159361 bulletin
Patent document 2: Japanese Laid-Open Patent Publication 3-202460 bulletin
Patent document 3: special open 2001-271774 bulletin
Summary of the invention
As known from the above, the present invention is intending to solve the above problem.That is, the purpose of the present invention is to provide a kind of compressor of high reliablity, with slide unit (such as impeller in rotary compressor), the slide unit can prevent the removing of hard coat, with the adaptation higher than CrN coating overlay film, meanwhile, there is high wear resistance.
In addition, the purpose of the present invention is to provide a kind of compressors, even if the lubrication property of lubricating oil will not deteriorate using the hydrofluorocarbon refrigerant for being free of chlorine in molecule, dirt etc. is nearly free from operating, hard coat has high adaptation and wear resistance.
The purpose of the present invention is to provide a kind of compressors, even if the lubrication property of lubricating oil will not deteriorate using hydrocarbon refrigerant, dirt etc. are nearly free from operating, hard coat has high adaptation and wear resistance.
The purpose of the present invention is to provide a kind of compressors, even if the lubrication property of lubricating oil will not deteriorate using carbonic acid gas refrigerant, dirt etc. are also nearly free from operating, hard coat has high adaptation and wear resistance.
To solve the above subject, present inventor can solve the project by careful studying discovery using following present invention.
I.e., compressor provided by the invention, it is that have compressing member in closed container, the lubrication of slipper is carried out by lubricating oil, compress the compressor of refrigerant, it is characterized in that, having mixing hard coat in the slipper, the mixing hard coat is made of the nitride for containing Cr and more than one metals selected from the group that Ti, Zr, V, Mo are constituted with regulated proportion.
Specifically, in the case where the rotary compressor as one kind of rotary compressor, compress the compressor of refrigerant, it is with cylinder, the roller being eccentrically rotated in the cylinder, impeller, the lubricating oil slided with being eccentrically rotated for roller, the impeller, which at least has in its front end slipper with the part of the roller contact, mixes hard coat, and the mixing hard coat is made of the nitride for containing Cr and more than one metals selected from the group being made of Ti, Zr, V, Mo with regulated proportion.
Compressor has the compressing member and lubricating oil of compression refrigerant in closed container, has mixing hard coat in slipper, the mixing hard coat is made of CrN and TiN, the TiN containing 3~25% mass.
In the case where compressor is rotary compressor, compressing member is with cylinder, the roller being eccentrically rotated in the cylinder, the impeller slided with being eccentrically rotated for roller, in the front end portion of impeller, and is not formed with the discontiguous part of roller and mix hard coat.
Compressor provided by the invention, it is that have compressing member in closed container, the lubrication of slipper is carried out by lubricating oil, compress the compressor of refrigerant, it is characterized in that, the lubricating oil is any of mineral oil, polyol ester, polyvinylether and ployalkylene glycol, and 40 DEG C of kinematic viscosity is 15~80mm2/ s, the refrigerant is the hydrofluorocarbon refrigerant that chlorine is free of in molecule, there is mixing hard coat in the slipper, the mixing hard coat is made of the nitride containing Cr and more than one metals selected from the group being made of Ti, Zr, V, Mo.
The mixing hard coat is preferably made of CrN and TiN, the TiN containing 3~25% mass.
Compressor provided by the invention, it is that there is compressing member in closed container, the lubrication of slipper is carried out by lubricating oil, compress the compressor of refrigerant, it is characterized in that, the lubricating oil is any of mineral oil, polyol ester, polyvinylether and polyalkylene glycol, 40 DEG C of 20~120mm of kinematic viscosity2/ s, the refrigerant are hydrocarbon refrigerants, have mixing hard coat in the slipper, the mixing hard coat is made of the nitride containing Cr and more than one metals selected from the group being made of Ti, Zr, V, Mo.
The mixing hard coat is preferably made of CrN and TiN, the TiN containing 3~25% mass.
Rotary compressor provided by the invention, it is that have compressing member in closed container, the lubrication of slipper is carried out by lubricating oil, compress the compressor of refrigerant, it is characterized in that, the lubricating oil is any of mineral oil, polyol ester, polyvinylether and polyalkylene glycol, 40 DEG C of 20~120mm of kinematic viscosity2/ s, the refrigerant are carbonic acid gas refrigerants, have mixing hard coat in the slipper, the mixing hard coat is made of the nitride containing Cr and more than one metals selected from the group being made of Ti, Zr, V, Mo.
The mixing hard coat is preferably made of CrN and TiN, the TiN containing 3~25% mass.
According to the present invention, it is possible to provide the compressor of high reliablity has impeller, which prevents hard coat from removing, and has the adaptation higher than CrN coating overlay film, meanwhile, there is high wear resistance.
In addition, mixing hard coat is made of CrN and TiN, and the TiN containing 3~25% mass, the raising of the wear resistance of slipper can be sought as a result,.
End part and in the case where not formed with the discontiguous part of roller and mixing hard coat before the impeller, even if impeller side is worn due to the sliding between cylinder, the end of mixing hard coat will not be reached, therefore, it can prevent the removing of mixing hard coat, therefore, the raising of product reliability can be sought.
Even if the lubrication property of lubricating oil will not deteriorate using the hydrofluorocarbon refrigerant for being free of chlorine in molecule, it is nearly free from dirt etc. in operation, hard coat has high adhesion and wear resistance.
Even if the lubrication property of lubricating oil will not deteriorate using hydrocarbon refrigerant, it is nearly free from dirt etc. in operation, hard coat has high adaptation and wear resistance.
In addition, being also nearly free from dirt etc. in operation even if the lubrication property of lubricating oil will not deteriorate using carbonic acid gas refrigerant, hard coat has high adaptation and wear resistance.
Detailed description of the invention
Fig. 1 is the cross-section structure explanatory diagram for indicating 2 air-cylinder type rotary compressors；
Fig. 2 is the relationship cross sectional illustration figure for indicating cylinder, roller, impeller of rotary compressor shown in FIG. 1 etc.；
The impeller explanatory diagram of Fig. 3 rotary compressor shown in FIG. 1；
Fig. 4 is the state description figure for indicating impeller and roller contact；
Fig. 5 is the state description figure for indicating the front end portion of impeller；
Fig. 6 is the explanatory diagram for illustrating crankangle θ；
Fig. 7 is the explanatory diagram of an embodiment of impeller；
Fig. 8 is the explanatory diagram of another embodiment of impeller；
Fig. 9 is the explanatory diagram of the another embodiment of impeller；
Figure 10 is the loop diagram using the refrigerating cycle of rotary compressor；
Figure 11 is the loop diagram for indicating the another embodiment using the refrigerating cycle for having rotary compressor.
Symbol description
31,32 cylinder
23 suction inlets
35 outlets
26 crank portions
38 rollers
40 impellers
40a wheel nose part
40b base material
40c hard coat
40d nitration case
Specific embodiment
In the following, the compressor that present invention will be described in detail with reference to the accompanying.In addition, the present invention is again without being limited thereto.
The cross-section structure of the rotary compressor of 2 air-cylinder types of an example of compressor of the invention is shown as in Fig. 1.
The motor 20 and compressing member 30 that rotary compressor 1 has cylindric closed container 10 and is accommodated in closed container 10.Motor 20 is made of the stator 22 and rotor 24 for being fixed on 10 inner wall part of closed container.The rotary shaft 25 for being installed on 24 center of rotor is embedded on the roller 38 of compressing member 30.
The compressing member 30 by upper cylinder 31, lower cylinder 32, the upper bearing 33 in upper and lower opening portion for being latched these upper and lower air cylinders 31,32, lower bearing 34, be situated between loaded between above-mentioned upper and lower air cylinders 31,32 partition 39 and upper roller 37 and lower roller 38 constitute.Moreover, upper lower roller 37,38 is embedded in the crank portion 26 being eccentrically set in a part of rotary shaft 25.
Here, since upper cylinder 31 and lower cylinder 32 and upper roller 37 and lower roller 38 are respectively identical structure, so, illustrate lower cylinder 32, lower roller 38 referring to Fig. 2.
It is equipped with refrigerant suction port 23 and outlet 35 on lower cylinder 32, cricoid roller 38 is rotatably freely equipped in lower cylinder 32.38 inner circumferential surface 38b of roller is contacted with the outer peripheral surface 26a of crank portion 26, and the outer peripheral surface 38a of roller 38 is contacted with the inner peripheral surface 32b of cylinder 32.
The impeller gap 41 of the sliding freely reciprocating action of impeller 40 is formed on cylinder 32, by being set to the driver unit of (top on drawing) behind impeller 40, such as the front end portion 40a of impeller 40 is pressed on to the outer peripheral surface 38a of roller 38 by the exciting force of spring 42.In this way, motivating impeller 40 towards roller 38, in addition, contacting wheel nose part 40a and roller 38 reliably by importing the refrigerant having compressed to the back side of impeller 40, can extremely effective preventing compression leakage caused by impeller 40.Also, discharge chambe 50 is marked off using these impellers 40, roller 38, cylinder 32, lower bearing 34, partition 39.
On the drawing of Fig. 2, when rotary shaft 25 is rotated in the counterclockwise direction, roller 38 is also eccentrically rotated in cylinder 32.At this point, being eccentrically rotated with roller 38, impeller 40 is slided, and impeller 40 separates the low-pressure chamber of refrigerant suction side and the hyperbaric chamber of refrigerant discharge side as a result,.In this way, passing through the sliding of roller 38 being eccentrically rotated with impeller 40, the low pressure refrigerant sucked from suction inlet 23 is compressed, and high pressure is formed, and is discharged from outlet 35.In the sucking (low pressure)-compression-discharge (high pressure) process, pressing force Fv is generated in the contact portion of roller 38 and impeller 40.
Fig. 3 indicates the summary section of the impeller 40 for rotary compressor 1 of the invention.It is preferred that the slipper on impeller 40, at least in the front end portion 40a of its base material 40b, that is, form hard coat 40c in the part contacted with roller 38.
That is, as shown in figure 4, only hard coat 40c can also be formed in the part contacted with roller 38.Due to not forming mixing hard coat in the front end portion of impeller 40 and in the part not contacted with roller 38, even if the side to impeller is worn due to the sliding between cylinder, the end of mixing hard coat will not be reached, therefore, mixing hard coat removing can be prevented, can further improve the reliability of product.
Wheel nose part does not form the region (the not formed region 40e for being equivalent to Fig. 5) of hard coat 40c, the two sides of hard coat 40c in impeller 40, contact (being free of contact) from the knuckle line (boundary of the flat part and the front end portion R of side) of impeller 40 to roller 38 and impeller 40 in 90 ° of crankangle θ of the roller 38 in cylinder 32, and the region of the contact (being free of contact) to roller 38 and impeller 40 in 270 ° of crankangle θ is preferred.
Here, as shown in fig. 6, θ indicates the angle of the contact portion from the center line of impeller 40 to roller 38 and cylinder 32.
Specifically, in Fig. 5, it is preferred that the width X (from knuckle line to the distance of the end hard coat 40c) of not formed region 40e is 10~500 μm, which can effectively embody the wear resistance of hard coat 40c, while can prevent mixing hard coat removing.
As hard coat 40c, mixing hard coat (sometimes referred to as hard coat) can be enumerated.
Mixing hard coat is made of the nitride for the more than one metal for containing Cr with regulated proportion and selecting from the group being made of Ti, Zr, V, Mo.
Especially when considering wear resistance and adaptation, mixing hard coat is made of CrN and TiN, the TiN containing 3~25% mass preferably in mixing hard coat.
Above-mentioned hard coat 40c, with it is existing only CrN overlay film the case where compared with, high adaptation can be kept, meanwhile, the wear resistance higher than CrN overlay film can be played.Therefore, by the slipper (front end slipper) by such hard coat 40c set on the front end portion 40a of base material 40b, i.e., the contact portion contacted with roller 38, hard coat 40c can not generate removing, and keep high wear resistance.Therefore, even if the rotary compressor long-time with the impeller 40 acts, the abrasion of impeller 40 or the removing of overlay film can also be prevented as possible, so, wear resistance can be improved, from stablizing using consideration, the raising of reliability can be sought.
In addition, below so-called " front end portion ", meaning the region at least containing the contact portion contacted with roller 38.
The base material 40b of above-mentioned impeller 40 is preferably made of ferrous materials such as ordinary steel, low-alloy steel, high-alloy steel, Austentitic steels.In addition, its longitudinal elastic coefficient preferably 1.96 × 105~2.45 × 105N/mm2.By the way that longitudinal elastic coefficient is located above range, wear resistance and reliability can further improve.In addition, when longitudinal elastic coefficient is less than 1.96 × 105N/mm2When, enough wear resistances cannot be obtained, when greater than 2.45 × 105N/mm2When, appropriate flexible deformation cannot be obtained, stress cannot be sought to reduce, it is thus impossible to obtain sufficient wear resistance.
In addition, the base material of roller 38 ferrous materials such as ordinary steel, low-alloy steel, high-alloy steel, Austentitic steels it is also preferred that be made of.Its longitudinal elastic coefficient preferably 9.81 × 104~1.47 × 105N/mm2.By the way that longitudinal elastic coefficient is located above range, wear resistance and reliability can further improve.In addition, when longitudinal elastic coefficient is less than 9.81 × 104N/mm2When, enough wear resistances as roller 38 cannot be obtained, when greater than 1.47 × 105N/mm2When, appropriate flexible deformation cannot be obtained, the stress between impeller 40 and roller 38 cannot be sought to reduce, it is thus impossible to obtain sufficiently wear-resistant damage.
In addition, as shown in Figures 7 and 8, hard coat 40c can also be formed on the front end portion 40a of impeller 40, as shown in figure 9, can also be formed in the entire surface of impeller.
In Fig. 7, nitrogen treatment is implemented to base material 40b, forms nitration case 40d, then, forms hard coat 40c on end part 40a before the impeller, in Fig. 8, after forming hard coat 40c on the front end portion 40a of impeller 40, implements nitrogen treatment, form nitration case 40d.If nitration case 40d carry out nitrogen treatment, forms layer as shown in Figure 8 due to not formed on hard coat 40c, therefore after forming hard coat 40c.
In the case of fig. 8, on drawing, on the inclined surface that is formed at left and right sides of hard coat 40c, due to being formed and the consistent nitration case 40d of the inclination, so the removing of hard coat 40c can be inhibited by nitration case 40d, the effect for further preventing hard coat 40c to remove is played.
As shown in figure 9, can also further form hard coat 40c in 40 entire surface of impeller after forming nitration case 40d in the entire surface of impeller 40.At this point, the raising of the wear resistance of 40 front end portion 40a of impeller can be sought, it is also possible to seek the raising of the wear resistance of impeller 40 and the slipper in impeller gap 41, therefore, the raising of the wear resistance of impeller 40 can be sought.
Nitration case can be formed and nitrogenizing base material iron using the methods of ionitriding and gas nitriding.
When forming nitration case using such as gas nitriding method, as the condition, treatment temperature is 480 DEG C, retention time 3Hr, ammonia flow 6m3It is preferred that/Hr, nitrogen and vulcanization hydrogen mixed gas, which are 1L/min,.Nitration case 40d with a thickness of 20~100 μm of range, preferably 30~40 μm.
Hard coat can also pass through PVD (Physical Vapor Deposition；Physical vacuum vapor deposition) method or CVD (Chemical Vapor Deposition；Chemical vapor deposition) the various methods such as method are formed, but are preferred and will not be lost the cementation zone of nitration case 40d due to heating when film forming, display is formed to the PVD method for forming overlay film of the effective strong bonding force of the raising of sliding properties.
Specifically, (3 μm of film thickness of mixing hard coat be made of the nitride containing Cr and Ti can be formed using PVD method on the base material surface of high-speed tool steel (SKH51), CrN: TiN=75: 25~97: 3 (mass ratioes)), manufacture impeller.
Using the formation of the hard coat of PVD method, such as ion plating film can be formed under conditions of 400 DEG C of temperature, pressure 3.99Pa, bias 30V by ion plating method.I.e., Cr, Ti are evaporated in the reaction gas such as nitrogen, it is ionized with gas phase state, ion plating film is formed by the mixture of CrN type chromium nitride and TiN type titanium nitride as reaction gas and the reaction product of evaporant ion on the surface base material 40b at cathode under bias.
Ion plating can be carried out by arc type ion plating apparatus.Arc type ion plating apparatus evaporates the material of hard coat under arc discharge and ionizes, and applying electric field to it makes its acceleration, in the material of base material surface vapor deposition hard coat.In the method, the base material temperature being placed in device is preferably 500 DEG C or 500 DEG C or less.The temperature is to be similar to the temperature of base material heat treatment temperature (tempering temperature), and because being controlled by the temperature, base material is heated under slightly above its heat treatment temperature, therefore also not thermally damaged.
The film thickness (average thickness) of hard coat considers, preferably 2~10 μm, more preferable 3~5 μm from wear resistance this point.
Rotary compressor 1 with the impeller containing above such hard coat etc. is applicable to various refrigerating cycles.
For example, the refrigerating cycle for freezer etc. uses HFC series coolant as refrigerant as shown in Figure 10, compressor 100, condenser 120, expansion mechanism 140, evaporator 160 are annularly subjected to piping connection and constituted.
Moreover, it is not shown in figure, but freezer is divided in the library of storage cooled object by heat insulating box, forms above-mentioned compressor 100 and condenser 120, expansion mechanism 140, storage Machine Room such as expansion valve or capillary in the outside of the heat insulating box.In addition, above-mentioned evaporator 160 is configured in the intracorporal appropriate location of hot box.
Through the above structure, refrigerant is flowed through in direction shown in solid arrow along Figure 10, constitutes refrigerating cycle.It is condensed that is, the high-temperature high-pressure refrigerant being discharged from compressor 100 carries out heat exchange by condenser 120 and outer gas, is depressurized by expansion mechanism 140, evaporated in evaporator 160.By the evaporation of the evaporator 160, in the library of cooling freezer.
In addition, Figure 11 indicates the schematic diagram of the refrigerating cycle for automatic vending machine and heat pump water-heating machine (ヒ mono- ト Port Application プ give soup device), the refrigerating cycle, as refrigerant, contains compressor 100, condenser 120, expansion mechanism 140, evaporator 160, four-way valve 180 using HFC series coolant.In addition, in Figure 11, the arrow of solid line and dotted line respectively indicates the direction for flowing through refrigerant, when solid line indicates to carry out common cooling, the case where when dotted line expression carries out defrosting or heat supply.
For example, the refrigeration gas for the high temperature and pressure compressed by compressor 100 is cooled down by condenser 120 by four-way valve 180, becomes the refrigerating fluid of cryogenic high pressure when in cooling automatic vending hangar.The refrigerating fluid is depressurized by expansion mechanism 140 (such as capillary, temperature-type expansion valve etc.), is formed slightly containing the low temperature and low pressure liquid of gas, is flow to evaporator 160, heat is obtained from indoor air and is evaporated, again by four-way valve 180, it flow to compressor 100, in cold room.
When carrying out defrosting or heat supply to evaporator 160, switch four-way valve 180, so that refrigerant by a dotted line, makes the flow direction of refrigerant be transformed into the direction opposite with the case where refrigeration.By the way that the flow direction of refrigerant is switched to opposite direction, evaporator 160 is switched to condenser 120, carries out defrosting or heat supply.
As refrigerant, the influence to environment is considered, it is preferable to use hydrofluorocarbon series coolant (such as the HFC refrigerants such as R410A, R134a), hydrocarbon refrigerant (such as iso-butane, propane, propylene etc.), carbonic acid gas refrigerant etc. without chlorine.
As refrigerant, when using the hydrofluorocarbon series coolant and hydrocarbon refrigerant for being free of chlorine, kinematic viscosity at preferably 40 DEG C of the base oil of the lubricating oil for rotary compressor 1 of the invention is 15~80mm2/s.This is because, when kinematic viscosity is less than 15mm2When/s, lubrication property deterioration, when greater than 80mm2When/s, oil returns to situation and is deteriorated.
On the other hand, when using carbonic acid gas refrigerant as refrigerant, kinematic viscosity at preferably 40 DEG C of the base oil of the lubricating oil for rotary compressor 1 of the invention is 20~120mm2/s.This is because, when kinematic viscosity is less than 20mm2/ s or more than 120mm2When/s, has and worry that lubrication property or oil return to the worry of variation, thus it is undesirable.
In addition, 40 DEG C of kinematic viscosity is more preferably set as 32~110mm2/s。
As the refrigerant by rotary compressor compression of the invention, when using hydrofluorocarbon series coolant (the hereinafter simply referred to as refrigerant) for being free of chlorine, as such refrigerant, it is preferable to use R134a, R410A etc., when considering practicability, more preferable R134a.
The base oil of lubricating oil for compressor of the invention is 15~80mm in 40 DEG C of kinematic viscosity2/s.This is because, when kinematic viscosity is less than 15mm2It is lubricating characteristics degraded when/s, when more than 80mm2When/s, oil, which returns, to be deteriorated.
In addition, as the refrigerant by compressor compresses of the invention, when using hydrocarbon refrigerant (hereinafter simply referred to as refrigerant), as such refrigerant, it is preferable to use iso-butane (R600a), propane (R290), propylene (R1270), butane (R600) etc., when being used for freezer, iso-butane is used.
Influence of the above-mentioned hydrocarbon refrigerant to global warming is small, beneficial from the aspect of environmental protection.
The base oil of lubricating oil for compressor of the present invention is 15~80mm in 40 DEG C of kinematic viscosity2/s.This is because, when kinematic viscosity is less than 15mm2It is lubricating characteristics degraded when/s, when more than 80mm2When/s, oil, which returns, to be reduced.
In addition; as the refrigerant by compressor compresses of the invention; the case where using carbonic acid gas refrigerant (hereinafter simply referred to as refrigerant), influence of the above-mentioned carbonic acid gas refrigerant (carbon dioxide coolant) to global warming is small, beneficial from the aspect of environmental protection.In addition, due to noninflammability, therefore might as well from the aspect of security control.
The base oil of lubricating oil for compressor of the present invention is 20~120mm in 40 DEG C of kinematic viscosity2/s.This is because, when kinematic viscosity is less than 20mm2/ s or more than 120mm2When/s, lubrication property or oil return are bad.
In addition, 40 DEG C of kinematic viscosity is more preferably set as 32~110mm2/s。
As the base oil of lubricating oil, preferably mineral oil, polyol ester, polyvinylether and polyalkylene glycol.
It can be to lubricating oil such as polyol ester or polyvinylethers individually or two or more wear-resistant dose of phosphate system of combination addition, the glycidol ether sour capturing agent such as epoxy, carbodiimide, phenol system antioxidant, copper inert agents of enumerate BTA system etc. for constituting.Alternatively, it is also possible to suitably cooperate other well known additive.
The additive amount that phosphate system is wear-resistant dose is not particularly limited, but adds 0.1~2.0% mass preferably with respect to lubricating oil.
When being lower than 0.1% mass, phosphoric acid overlay film cannot be generated for wear-resistant dose due to phosphate system well, therefore lubricity reduces, and causes to wear in boundary lubrication region, meanwhile, base oil generates deterioration.When more than 2.0% mass, phosphate system is wear-resistant dose generates an erosion corrosion, meanwhile, the decomposition product that phosphate system is wear-resistant dose generates adverse effect to base oil, promotes the deterioration of base oil.
The additive amount of the epoxide, carbodiimide compound that are made of glycidol ether is not particularly limited, but adds 0.01~10% mass preferably with respect to lubricating oil.
When be lower than 0.01% mass when, epoxide, carbodiimide compound additive effect cannot embody, therefore, thermochemical stability degradation.When being more than 10% mass, there is dirt and the worry of accumulation occurs.
To prevent the oxidative degradation under long-term preservation, phenol system antioxidant of the addition as additive preferably into lubricating oil.Additive amount preferably 0.01~1.0% mass, more preferable 0.05~0.3% mass.
In addition, the copper inert agents of enumerate BTA system can be added in lubricating oil, additive amount preferably 1~100ppm, more preferable 5~50ppm.
This rotary compressor shown in FIG. 1, which removes, is suitable for above-mentioned heat pump water-heating machine China and foreign countries, could be applicable to the refrigerating plants such as freezer or freezer, the air conditioners such as air-conditioning etc..
Test example
As the impeller for rotary compressor of a scheme of the invention, it is illustrated by the following test example 1~3 for showing its validity and comparative test example 1,2.
Firstly, manufacturing the impeller for forming mixing hard coat (3 μm of film thickness, CrN: TiN=50: 50 (mass ratioes)) by the nitride containing Cr and Ti using PVD method formation on base material surface in comparative test example 1.
Hard coat is formed using PVD method, is carried out using ion plating method in 400 DEG C of temperature, pressure 3.99Pa, bias 30V.I.e., Cr, Ti are evaporated in the reaction gas such as nitrogen, it is ionized with gas phase state, hard mixing overlay film is formed by the mixture of reaction product CrN type chromium nitride and TiN type titanium nitride as reaction gas and evaporant ion on the base material surface at cathode under bias.In addition, using high-speed tool steel (SKH51) on base material.
Secondly, in addition to CrN: TiN 75: 25 (mass ratio) and comparative test example 1 is identical in test example 1, manufacture forms the impeller of hard mixing overlay film.
In test example 2, in addition to CrN: TiN 95: 5 (mass ratio) and comparative test example 1 is identical, and manufacture forms the impeller of hard mixing overlay film.
In test example 3, in addition to CrN: TiN 97: 3 (mass ratio) and comparative test example 1 is identical, and manufacture forms the impeller of hard mixing overlay film.
In addition, manufacture forms the impeller for the layer (3 μm of thickness) being only made of CrN by PVD method on the surface of the base metal as comparative test example 2.
Formation using this layer of PVD is to evaporate Cr in the reaction gas such as nitrogen, with gaseous ionization, on the base material surface at cathode by the CrN type chromium nitride and Cr that are formed as the reaction product of reaction gas and evaporant ion under bias2The ion plating film that the mixture of N-type chromium nitride is constituted.
Moreover, carrying out fitness test (scratch test (ス Network ラ Star チ)) and Amslir wear test (mono- abrasion test of ア system ス ラ) to such five impellers, the evaluation of wear resistance and adaptation is carried out.
Here, so-called scratch test refers to the surface using diamond penetrator delineation coated coupons, by the peel load of coating, the method for evaluating adaptation.In addition, Amslir wear test refers in atmosphere gas in an atmosphere, by with the roller on the load of 100kgf pressing impeller, refrigerator oil is supplied to the contact portion side of roller and impeller, while being carried out continuously 20 hours, the method for evaluating abrasion loss.
Relative to the fitness test of each test example and comparative test example, the results are shown in Table 1.In addition, the results are shown in Table 2 for Amslir wear test.
Table 1
| CrN/TiN ratio of components | Adaptation (N) | |
| Comparative test example 2 | 100/0 | 61 |
| Comparative test example 1 | 50/50 | 56 |
| Test example 3 | 97/3 | 67 |
| Test example 2 | 95/5 | 67 |
| Test example 1 | 75/25 | 61 |
Table 2
| CrN/TiN ratio of components | The abrasion loss of test film | ||
| Fixinig plate 0.1 × (mm) | Revolving fragment (μm) | ||
| Comparative test example 2 | 100/0 | 3.1 | 2 |
| Comparative test example 1 | 50/50 | 3.6 | 2 |
| Test example 3 | 97/3 | 2.9 | 2 |
| Test example 2 | 95/5 | 2.8 | 1 |
| Test example 1 | 75/25 | 2.9 | 2 |
By the evaluation result of table 1 and table 2 it is found that in comparative test example 1 (CrN: TiN=50: 50), in adaptation, comparative test example 2 (CrN) is 61N, and comparative test example 1 is 56N, forms bad result；It is also that the fixinig plate of comparative test example 2 is 0.31mm in wear test, revolving fragment is 2 μm, and in comparative test example 1, fixinig plate 0.36mm becomes bad result.It is from above result it is found that when the ratio for setting TiN is excessively high, then poorer than the result of CrN is used alone.
Secondly, in adaptation and comparative test example 2 is identical in test example 1 (CrN: TiN=75: 25), but in wear test, the fixinig plate of comparative test example 2 is 0.31mm, and revolving fragment is 2 μm, and in embodiment 1, fixinig plate 0.29mm obtains good result.
In the adaptation of test example 2 (CrN: TiN=95: 5), it is 67N relative to the 61N of comparative test example 2, becomes good result, in addition, it is also that the fixinig plate of embodiment 2 is 0.31mm in wear test, revolving fragment is 2 μm, and in test example 2, fixinig plate is 0.28mm, and revolving fragment is 1 μm, obtains good result.
In addition, relative to the 61N with embodiment 2 identical 67N and comparative test example 2, obtaining good result in the adaptation of test example 3 (CrN: TiN=97: 3).In addition, test example 3 is same, fixinig plate 0.29mm in wear test, revolving fragment is 2 μm, obtains good result.
Judge from above result, by the way that by test example 1~3, i.e. TiN containing ratio is set as 3%~25%, and adaptation, wear resistance obtain good result.It is set as 5% especially by by the TiN containing ratio of test example 2, also obtains not only fixinig plate, the result that the wear resistance of revolving fragment improves.
According to this as a result, being 5% front and back (4%~6%) in TiN containing ratio, the wear resistance of adaptation, fixinig plate and revolving fragment all improves.
In addition, the mixing hard coat of Zr, V, Mo and Cr instead of Ti, better than CrN is used alone.
Mixing hard coat can also be replaced with inclination hard coat or lamination hard coat.
More than, it is illustrated using the impeller of rotary compressor, but may be other slippers, such as the slipper of rotary shaft shown in FIG. 1 25 and metal (upper 33,34.In addition, the present invention is also used for the slipper of scroll compressor, the slipper of reciprocating compressor can be also used for.
Claims (6)
1. a kind of compressor, it is that have compressing member in closed container, the lubrication of slipper is carried out by lubricating oil, and compress the compressor of refrigerant, it is characterized in that, there is mixing hard coat in the slipper, the mixing hard coat is made of the nitride for containing Cr and more than one metals selected from the group being made of Ti, Zr, V, Mo with regulated proportion.
2. compressor as described in claim 1, which is characterized in that there is mixing hard coat in the slipper, the mixing hard coat is made of CrN and TiN, the TiN containing 3~25% mass.
3. compressor as claimed in claim 1 or 2, it is characterized in that, roller, the impeller that slides with being eccentrically rotated for roller that compressing member has cylinder, is eccentrically rotated in the cylinder, impeller front end portion and do not formed with the discontiguous part of roller and mix hard coat.
4. a kind of compressor, it is that have compressing member in closed container, the lubrication of slipper is carried out by lubricating oil, and compress the compressor of refrigerant, it is characterized in that, the lubricating oil is any of mineral oil, polyol ester, polyvinylether and polyalkylene glycol, and 40 DEG C of kinematic viscosity is 15~80mm2/ s, the refrigerant are the hydrofluorocarbon refrigerants that chlorine is free of in molecule, have mixing hard coat in the slipper, the mixing hard coat is made of the nitride containing Cr and more than one metals selected from the group being made of Ti, Zr, V, Mo.
5. a kind of compressor, it is that have compressing member in closed container, the lubrication of slipper is carried out by lubricating oil, and compress the compressor of refrigerant, it is characterized in that, the lubricating oil is any of mineral oil, polyol ester, polyvinylether and polyalkylene glycol, 40 DEG C of 15~80mm of kinematic viscosity2/ s, the refrigerant are hydrocarbon refrigerants, have mixing hard coat in the slipper, the mixing hard coat is made of the nitride containing Cr and more than one metals selected from the group being made of Ti, Zr, V, Mo.
6. a kind of compressor, it is that have compressing member in closed container, the lubrication of slipper is carried out by lubricating oil, and compress the compressor of refrigerant, it is characterized in that, the lubricating oil is any of mineral oil, polyol ester, polyvinylether and polyalkylene glycol, 40 DEG C of 20~120mm of kinematic viscosity2/ s, the refrigerant are carbonic acid gas refrigerants, have mixing hard coat in the slipper, the mixing hard coat is made of the nitride containing Cr and more than one metals selected from the group being made of Ti, Zr, V, Mo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510092420 CN1916419A (en) | 2005-08-18 | 2005-08-18 | Compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510092420 CN1916419A (en) | 2005-08-18 | 2005-08-18 | Compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1916419A true CN1916419A (en) | 2007-02-21 |
Family
ID=37737464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510092420 Pending CN1916419A (en) | 2005-08-18 | 2005-08-18 | Compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1916419A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312838A (en) * | 2010-10-22 | 2012-01-11 | 台州市百达制冷有限公司 | Piston for rotary compressor and manufacturing method of piston |
| CN105907376A (en) * | 2010-12-20 | 2016-08-31 | 日立空调·家用电器株式会社 | Compressor for refrigeration and air-conditioning, and refrigerating and air-conditioning apparatus |
| CN106168219A (en) * | 2015-05-18 | 2016-11-30 | Lg电子株式会社 | Compressor |
| CN109964034A (en) * | 2016-11-18 | 2019-07-02 | 松下知识产权经营株式会社 | Coolant compressor and refrigerating plant with it |
| CN110023625A (en) * | 2016-11-28 | 2019-07-16 | 松下知识产权经营株式会社 | Coolant compressor and the refrigerating plant for using it |
-
2005
- 2005-08-18 CN CN 200510092420 patent/CN1916419A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312838A (en) * | 2010-10-22 | 2012-01-11 | 台州市百达制冷有限公司 | Piston for rotary compressor and manufacturing method of piston |
| CN105907376A (en) * | 2010-12-20 | 2016-08-31 | 日立空调·家用电器株式会社 | Compressor for refrigeration and air-conditioning, and refrigerating and air-conditioning apparatus |
| CN106168219A (en) * | 2015-05-18 | 2016-11-30 | Lg电子株式会社 | Compressor |
| CN106168219B (en) * | 2015-05-18 | 2019-06-11 | Lg电子株式会社 | Compressor |
| US10550885B2 (en) | 2015-05-18 | 2020-02-04 | Lg Electronics Inc. | Compressor |
| CN109964034A (en) * | 2016-11-18 | 2019-07-02 | 松下知识产权经营株式会社 | Coolant compressor and refrigerating plant with it |
| CN109964034B (en) * | 2016-11-18 | 2021-05-07 | 松下知识产权经营株式会社 | Refrigerant compressor and refrigerating device with same |
| CN110023625A (en) * | 2016-11-28 | 2019-07-16 | 松下知识产权经营株式会社 | Coolant compressor and the refrigerating plant for using it |
| US10914010B2 (en) | 2016-11-28 | 2021-02-09 | Panasonic Intellectual Property Management Co., Ltd. | Refrigerant compressor and freezer including same |
| CN110023625B (en) * | 2016-11-28 | 2021-06-11 | 松下知识产权经营株式会社 | Refrigerant compressor and refrigeration device using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1135594A (en) | Refrigerating apparatus and lubricating oil composition | |
| KR100785369B1 (en) | The rotary compressor | |
| CN1916419A (en) | Compressor | |
| JP2005155461A (en) | Compressor | |
| JPH0422789A (en) | Refrigerant compressor | |
| CN117146475A (en) | Refrigerant compressor with wear sleeve and lubricant for treating clastic fluid | |
| JP2005155460A (en) | Compressor | |
| CN1916423A (en) | Impeller for compressor | |
| JP2005155459A (en) | Compressor | |
| JP2005155458A (en) | Compressor | |
| US20230383760A1 (en) | Refrigerant compressor with wear sleeve and lubricant blends for handling debris-laden fluids | |
| JP2005155650A (en) | Rotary compressor | |
| JPH05106581A (en) | Refrigerant compressor | |
| JPH0518357A (en) | Refrigerant compressor | |
| JP2004231987A (en) | Nitrided parts, cooling medium compressor and freezing air-conditioner | |
| JP2005207429A (en) | Rotary compressor | |
| JP2005195033A (en) | Rotary compressor | |
| JPH09222082A (en) | Compressor | |
| JP2005155649A (en) | Rotary compressor | |
| JP2005214213A (en) | Rotary compressor | |
| JP2005195035A (en) | Rotary compressor | |
| JP2005155653A (en) | Rotary compressor | |
| JP2005155648A (en) | Rotary compressor | |
| JP2005155637A (en) | Rotary compressor | |
| JP2005195039A (en) | Rotary compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070221 |