CN103733003A - Compressor for refrigeration and air conditioning, and refrigeration and air conditioning device - Google Patents
Compressor for refrigeration and air conditioning, and refrigeration and air conditioning device Download PDFInfo
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- CN103733003A CN103733003A CN201280039535.9A CN201280039535A CN103733003A CN 103733003 A CN103733003 A CN 103733003A CN 201280039535 A CN201280039535 A CN 201280039535A CN 103733003 A CN103733003 A CN 103733003A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/18—Ethers, e.g. epoxides
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
- C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/008—Lubricant compositions compatible with refrigerants
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/22—All components of a mixture being fluoro compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/24—Only one single fluoro component present
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/0406—Ethers; Acetals; Ortho-esters; Ortho-carbonates used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/09—Characteristics associated with water
- C10N2020/097—Refrigerants
- C10N2020/101—Containing Hydrofluorocarbons
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/70—Soluble oils
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/30—Refrigerators lubricants or compressors lubricants
Abstract
The present invention improves the wear resistance of a compressor for refrigeration and air conditioning in which difluoromethane (HFC32) is used as a refrigerant, and improves long-term reliability; and a refrigeration and air conditioning device using the compressor is made more efficient. A compressor for refrigeration and air conditioning provided with a refrigerant-compressing unit having a sliding part; and difluoromethane, which is a refrigerant, and a refrigerant oil are sealed inside; wherein the refrigerant oil has a kinematic viscosity of 40-100 mm2/s at 40 DEG C, and is a cyclic ketal compound or a cyclic acetal compound. The low-temperature-side critical solution temperature of the refrigerant and the refrigerant oil is -10 DEG C or lower.
Description
Technical field
The present invention relates to adopt cooling air conditioner compressor and the refrigerating air conditioning device of heat pump cycle.
Background technology
In refrigeration air-conditioner field; for the environment of preserving our planet, the CFC(CFC just always using in active research damages the ozone layer the cold-producing medium of material or insulation material) or HCFC(HCFC) substitute and as the HFC(hydrofluoroalkane using in the high efficiency of global warming countermeasure and cold-producing medium always) substitute.
As substituting of the CFC of the material damaging the ozone layer or HCFC, not damaging the ozone layer, toxicity and flammable low and can guarantee that efficiency is as the starting point, carry out selection and the equipment development of cold-producing medium and insulation material.Its result, in the insulation material of refrigerator, as blowing agent, replaces CFC11 according to the order of HCFC141b, pentamethylene, at present to vacuum thermal insulating material and use transition.
As cold-producing medium, in refrigerator and air conditioning for automobiles, according to HFC134a[GWP(global warming potential)=1430] order replace CFC12, in indoor air conditioner and combined type air conditioner, use R410A[HFC32/HFC125(50/50 % by weight) mixture: GWP=2088] replacement HCFC22.
But, in the 3rd Meeting of States Parties of climatic fluctuation framework treaty (COP3) of holding at kyoto, Japan for 1997, HFC discharge capacity (is scaled to CO as greenhouse effect gas
2) limit, therefore, promoted the reduction of HFC.
Therefore, in household electric refrigerator, the enclosed volume of cold-producing medium is few, and judgement can be used combustible refrigerant on manufacturing, with flammable R600a(iso-butane: GWP=3) replacement HFC134a.In addition, surging due to public opinion, at present, is also being conceived to HFC134a used for automobile air conditioning and indoor air conditioner and combined type air conditioner R410A.In addition, in commercial refrigerator, the enclosed volume of cold-producing medium is many, the risk during from inclosure combustible refrigerant, and that still use at present is HFC134a.
In reality, the automobile absorption method of the household electrical appliances absorption method (particular home electrical appliance commercialization method again) that calendar year 2001 implements and execution in 2003 (about the law of the renewable resources of abandoned car etc.) makes the recovery of equipment become obligation, reclaim and process the HFC etc. using as cold-producing medium, therefore, reduce HFC etc. and be directly discharged into the discharge capacity in atmosphere.But, EU(European Union) and in 2006 instruction (Directive, 2006/40/EC), from January, 2011 listing, the cold-producing medium of GWP > 150 is used in the agent of auto Not Permitted air-conditioning refrigeration.Affected by this, air conditioning for automobiles industry has been made various reactions, worries that in indoor air conditioner, also morning, R410A was used in party restriction.According to above-mentioned EU instruction, within 2011, also likely make and list fixed air-conditioning in adjustment in limited field, just in acceleration, replace the research of cold-producing medium.
As such substituted type cold-producing medium, from thering is the thermal physical characteristic equal with HFC134a, the reasons such as low GWP, hypotoxicity, low combustible are considered, candidate have 2,3,3,3-tetrafluoeopropene (HFO1234yf(HF hydrocarbon) (GWP=4), 1,3,3,3-tetrafluoeopropene (HFO1234ze) (GWP=10) or the independent cold-producing medium of difluoromethane (HFC32) or the cold-producing medium of their mixing.As with 2,3,3,3-tetrafluoeopropene mix cold-producing medium, be mainly difluoromethane (HFC32).
In addition, the GWP allowing according to low combustible, also can consider to mix HFC134a and HFC125.
As other cold-producing medium, can enumerate the hydrofluoroalkane of the low GWP such as the hydrocarbons such as propane, propylene and fluoroethane (HFC161), Difluoroethane (HFC152a).In the cold-producing medium of these candidates, consider change (exploitation) of device efficiency decline, ease for operation, cold-producing medium cost and the equipment based on described physical properties that combustibility, cooling and warming ability, non-azeotropic refrigerant thermograde cause etc., most preferably difluoromethane (HFC32), the task of top priority is indoor air conditioner, the combined type air conditioner of this cold-producing medium of application.
As difluoromethane cold-producing medium refrigerator oil, patent documentation 1 and patent documentation 2 disclose the polyalcohol ester oil that difluoromethane is demonstrated to intermiscibility.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2010-235960 communique
Patent documentation 2: TOHKEMY 2002-129178 communique
Summary of the invention
The problem that invention will solve
In combined type air conditioner and multi-connected air conditioner, the pipe arrangement that forms circulation is long, and the enclosed volume of the cold-producing medium of every air-conditioning is many, therefore, is difficult to use high flammable cold-producing medium.In addition, because pipe arrangement is long, therefore, need to use the refrigerator oil good with the intermiscibility of cold-producing medium.
In addition, refrigerator oil is for sealed electrical compressor, performance to its sliding part be lubricated, sealing, cooling etc. effect.The most important characteristic of cooling air conditioner refrigerator oil is and the intermiscibility of cold-producing medium, if be disposed at the interior two separate that liquid refrigerant and refrigerator oil occur of the compressor of off-premises station, the liquid refrigerant separating is supplied with to each sliding part, may cause insufficient lubrication.In addition, in compressor operation, due to mechanism, refrigerator oil becomes vaporific, to circulation side, discharges, and when intermiscibility is poor, refrigerator oil is trapped in the low-temp. portion of circulation, to the recirculating oil quantity of compressor, reduces.Particularly, in combined type air conditioner and multi-connected air conditioner, the pipe arrangement that forms circulation is long, therefore needs to use the refrigerator oil good with the intermiscibility of cold-producing medium.
In patent documentation 1,2, as refrigerator oil, proposed difluoromethane to demonstrate the polyalcohol ester oil of intermiscibility, but in order to ensure long-term reliability and the oil return characteristic of cooling air conditioner compressor, still abundant not with the intermiscibility of difluoromethane, require to use the better refrigerator oil of intermiscibility.
Like this, because the intermiscibility of existing refrigerator oil and difluoromethane is insufficient, may cause insufficient lubrication, particularly not be suitable for long combined type air conditioner and the multi-connected air conditioner of pipe arrangement that forms circulation.
The object of the invention is to, improve and use the wearability of difluoromethane (HFC32) as the cooling air conditioner compressor of cold-producing medium, improve long-term reliability, realize the high efficiency of the refrigeration air-conditioner that uses this compressor simultaneously.
Solve the means of problem
The present invention is a kind of cooling air conditioner compressor, and it possesses the refrigerant compression portion with sliding part, encloses the difluoromethane and the refrigerator oil that have as cold-producing medium, it is characterized in that,
The kinematic viscosity that described refrigerator oil contains 40 ℃ is 40～100mm
2/ s(second), the compound that represented by following chemical formula (1) (in formula, R
1～R
2represent the alkyl of hydrogen or carbon number 1～3) as base oil.
[changing 1]
The present invention is a kind of cooling air conditioner compressor, and it possesses the refrigerant compression portion with sliding part, encloses the difluoromethane and the refrigerator oil that have as cold-producing medium, it is characterized in that,
Described refrigerator oil contains: the kinematic viscosity of 40 ℃ being represented by following chemical formula (1) is 40～100mm
2the compound of/s (in formula, R
1～R
2represent the alkyl of hydrogen or carbon number 1～3) and the base oil forming and the additional polyalcohol ester oil being represented by following chemical formula (2) (in formula, R
3represent the alkyl of carbon number 7～9), described additional polyalcohol ester oil (that is the polyalcohol ester oil, adding) consist of 1～10 % by weight.
[changing 2]
[changing 3]
In addition, in cooling air conditioner compressor as above, it is characterized in that, the low temperature side critical solution temperature of described cold-producing medium and refrigerator oil is below-10 ℃.
The present invention is a kind of cooling air conditioner compressor, and it possesses the refrigerant compression portion with sliding part, encloses the difluoromethane and the refrigerator oil that have as cold-producing medium, it is characterized in that, described refrigerator oil is 40～100mm the kinematic viscosity of 40 ℃
2/ s, described refrigerator oil is cyclic ketal compound or cyclic acetal compound, the low temperature side critical solution temperature of cold-producing medium and refrigerator oil is below-10 ℃.
Invention effect
According to the present invention, can obtain guaranteeing using difluoromethane as the long-term reliability of the cooling air conditioner compressor of cold-producing medium and oil return characteristic and consider the refrigerating air conditioning device of environment.
Accompanying drawing explanation
Fig. 1 is the skeleton diagram that represents the formation of indoor air conditioner.
Fig. 2 is the profile that represents indoor air conditioner vortex hermetic type compressor.
The specific embodiment
The cooling air conditioner compressor of an embodiment of the present invention and the refrigerating air conditioning device of this cooling air conditioner compressor of use are described below.
Above-mentioned cooling air conditioner compressor possesses the refrigerant compression portion with sliding part, encloses the difluoromethane and the refrigerator oil that have as cold-producing medium.At this, refrigerator oil is 40～100mm the kinematic viscosity of 40 ℃
2/ s, the low temperature side critical solution temperature of cold-producing medium and refrigerator oil is below-10 ℃.Be explained, in the evaporimeter of use in refrigeration system GM Refrigerator Working, requiring cryogenic temperature is below-10 ℃.
In above-mentioned cooling air conditioner compressor, refrigerator oil is cyclic ketal compound or cyclic acetal compound.
In above-mentioned cooling air conditioner compressor, refrigerator oil contain be selected from following chemical formula (1) represent compound (in formula, R
1～R
2represent the alkyl of hydrogen or carbon number 1～3) at least one as base oil.
[changing 4]
Above-mentioned refrigerating air conditioning device is used above-mentioned cooling air conditioner compressor.Above-mentioned cooling air conditioner compressor is vortex or the rotary closed type compressor that is built-in with engine, and refrigerator oil is 40～100mm the kinematic viscosity of 40 ℃
2below/s.
Use embodiment to be elaborated below.
Embodiment discloses the compressor that uses difluoromethane and the refrigerating air conditioning device that uses this compressor.
The cold-producing medium of embodiment is difluoromethane, and refrigerator oil is cyclic ketal compound or cyclic acetal compound, and they obtain by the condensation reaction of polyalcohol and ketone or aldehyde.As the polyalcohol of raw material and ketone or aldehyde preferably by the kinematic viscosity obtaining as product, flash-point, boiling point, purity, with the decision such as the intermiscibility of cold-producing medium, electrical insulating property.Polyalcohol is preferably 4～8 yuan, and carbon number is 4～10 left and right.Specifically can enumerate antierythrite, diglycerol, arabinose, ribose, D-sorbite, mannitol, galactitol, iditol, talitol, allitol, 4, 7-dioxadecane-1, 2, 9, 10-tetrol, 5-methyl-4, 7-dioxadecane-1, 2, 9, 10-tetrol, 4, 7, 10-trioxa tridecane-1, 2, 12, 13-tetrol, 1, 6-dimethoxy hexane-2, 3, 4, 5-tetrol, 3, 4-diethoxy hexane-1, 2, 5, the polyalcohols such as 6-tetrol, or pentaerythrite, two trimethylolethanes, double trimethylolpropane, dipentaerythritol, tripentaerythritol, 2, 9-diethyl-2, 9-dihydroxymethyl-4, 7-dioxadecane-1, 10-glycol, 2, 12-diethyl-2, 12-dihydroxymethyl-5, 8-dimethyl-4, 7, 10-trioxa tridecane-1, the hindered alcohols such as 13-glycol, preferably radical of saturated aliphatic alcohol.
The carbon number of ketone or aldehyde is 2～6, specifically can enumerate: acetone, MEK, methyl propyl ketone, methyl isopropyl Ketone, methyl butyl ketone, methyl iso-butyl ketone (MIBK), acetaldehyde, propionic aldehyde, butyraldehyde, isobutylaldehyde, 2 methyl butyraldehyde etc.
Then, additional polyalcohol ester oil be the compound that represents of following chemical formula (2) (in formula, R
3represent the alkyl of carbon number 7～9), preferably by making the resistance type that is subject to of good thermal stability that the condensation reaction of polyalcohol and unary fatty acid obtains.
[changing 5]
As the preferred dipentaerythritol of polyalcohol of raw material.In dipentaerythritol, as impurity, contain a large amount of pentaerythrites or tripentaerythritol.
In addition, as the unary fatty acid of raw material, there is 2 ethyl hexanoic acid, 3,5,5-tri-methyl hexanoic acid etc., they can use separately or mix two or more uses.
As additional polyalcohol ester oil, can be compound polyalcohol ester oil (compound ester oil), it is the ester compounds being formed by polyalcohol, binary of fatty acids and unary fatty acid bonding.
At this, as the polyalcohol preference of raw material as neopentyl glycol, trimethylolpropane and pentaerythrite.In addition, as the unary fatty acid of raw material, there are positive valeric acid, n-caproic acid, positive enanthic acid, caprylic acid, 2-Methyl Butyric Acid, 2 methyl valeric acid, 2 methyl caproic acid, 2 ethyl hexanoic acid, isooctyl acid, 3,5,5-tri-methyl hexanoic acids etc., they can use separately or mix two or more uses.In addition, as the binary of fatty acids of raw material, have malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid etc., they can use separately or mix two or more uses.
Viscosity grade for the aircondition of embodiment and the refrigerator oil of refrigeration machine is different because of the kind of compressor, and in scroll compressor, preferably the kinematic viscosity of 40 ℃ is 40～100mm
2the scope of/s.In addition, in rotary compressor, preferably the kinematic viscosity of 40 ℃ is 40～70mm
2the scope of/s.Be explained, when the viscosity of 40 ℃ are 40mm
2when/s is following, oil film formative and sealing variation, when viscosity is greater than 100mm
2during/s, the mechanical loss being caused by viscous drag, frictional resistance etc. increases, and compressor resistance reduces.Therefore, as long as the kinematic viscosity of 40 ℃ is at 40～100mm
2refrigerator oil within the scope of/s, just can meet above-mentioned each condition.
The heat-resisting rank of electric insulation is by heat-resisting rank and the electric association of the Evaluation of Heat Tolerance JEC-6147(electrical specification investigation standard specification of electric insulation) regulation, the insulating materials that refrigerating and air-conditioning adopts with compressor is also selected according to the heat-resisting kind of above-mentioned specification.But, in the situation that refrigeration air-conditioner is used organic insulation, owing to using in the such particular surroundings of cold-producing medium atmosphere, therefore need to consider to suppress except the distortion by also being caused by pressure temperature and sex change, in addition, owing to also will contacting the such polar compound of cold-producing medium or refrigerator oil, therefore, also must consider solvent resistance, resistance to extractability, heat/chemical/mechanical stability, resistance to cold-producing medium [(give after stress to film by be full of cracks, the fine snake abdomen shape crackle producing while impregnated in cold-producing medium), blister (bubble of the film that the cold-producing medium that tunicle absorbs causes because of temperature rise)] etc.
Particularly the adiabatic exponent of HFC32 is little, and therefore, the refrigerant temperature of discharge is high.Therefore, need to use the insulating materials of high heat-resisting rank (E type, more than 120 ℃).
The insulating materials using at most in compressor is PET(PETG).As purposes, use membrane material with the coil insulation of the iron core of winding engine, the lashing wire of coil, the clad material of engine lead-in wire are used fibrous PET.As other dielectric film, can enumerate: PPS(polyphenylene sulfide), PEN(PEN), PEEK(polyethers ether copper), PI(polyimides), PA(polyamide) etc.In addition, the major insulation clad material of coil is used THEIC modified poly ester, polyamide, polyamidoimide, polyesterimide, polyesteramide acid imide etc., the dual coated copper cash that preferably uses the bilayer of implementing polyesterimide-amide imide to apply.
In the present invention, can also in above-mentioned refrigerator oil, add lubricity improver (also containing the EP agents such as tricresyl phosphate), antioxidant, sour agent for capturing, defoamer, matal deactivator etc.Particularly, because polyalcohol ester oil coexists down to hydrolysis occurs deterioratedly at moisture, therefore must coordinate antioxidant and sour agent for capturing.
As antioxidant, preferably phenolic DBPC(2,6-BHT).
As sour agent for capturing, be generally used as aliphatic epoxy based compound or the carbodiimide based compound of the compound with epoxide ring.Particularly, because the reactivity of carbodiimide based compound and aliphatic acid is high, catch the hydrogen ion dissociating from aliphatic acid, therefore, the effect of the hydrolysis of inhibition polyalcohol ester oil is very large.As carbodiimide based compound, can enumerate two (2,6-isopropyl phenyl) carbodiimide.The use level of acid agent for capturing is preferably 0.05～1.0 % by weight with respect to refrigerator oil meter.In addition, due to wearing no resistance of cyclic ketal compound or cyclic acetal compound, therefore, and as lubricity improver, the phosphotriester of preferred cooperation take tricresyl phosphate as representative etc.
(embodiment 1 and comparative example 1～8)
(with the intermiscibility evaluation of cold-producing medium)
The cold-producing medium of enclosing in cooling air conditioner compressor and the intermiscibility of refrigerator oil are described above, from kind of refrigeration cycle to the oil return to compressor, (guarantee the oil mass of compressor inside) or heat exchanger effectiveness the aspect of guaranteeing compressor reliability such as maintain, be one of key property.
The intermiscibility evaluation of difluoromethane and refrigerator oil is measured according to JIS K 2211.
By mixing the oil (refrigerator oil) of any amount and the mixture that cold-producing medium is made, be sealing into withstand voltage glass container, observe the content under the state that changes temperature.If content gonorrhoea, is judged to be two separate, if transparent, be judged to be to dissolve.
In general, if the temperature of said mixture is enough high, can there is not two separate, but dissolve, still, if reduce gradually the temperature of this mixture, two separate occur.During the intermiscibility carrying out at this is evaluated, the temperature of mixture is gradually reduced and measured from 20 ℃.Therefore the temperature (solution temperature) that, failed call dissolves is data when more than 20 ℃.The oil dissolving more than 20 ℃ is not suitable as the oil of using for cooling air conditioner compressor.
In intermiscibility is evaluated, take the oily concentration (oil concentration) of mixing in cold-producing medium as transverse axis, take solution temperature as the longitudinal axis, making curve map.This curve map is generally expressed as the oil concentration dependence that is separated into two-layer temperature, for having peaked curve.This maximum is defined as to low temperature side critical solution temperature.
The refrigerator oil using is as described below.At this, the viscosity of 40 ℃ refers to the kinematic viscosity of the refrigerator oil at 40 ℃.
(A) the cyclic ketal compound being obtained by 1mol D-sorbite and 3mol MEK: the viscosity 63.1mm of 40 ℃
2/ s
(B) be subject to resistance type polyol ester oil (H-POE) (2 ethyl hexanoic acid/3 of pentaerythrite system, the fatty acid mixed ester oil of 5,5-tri-methyl hexanoic acid): the viscosity 64.9mm of 40 ℃
2/ s
(C) be subject to resistance type polyol ester oil (H-POE) (3,5 of trimethylolpropane system, the aliphatic acid ester oil of 5-tri-methyl hexanoic acid): the viscosity 51.6mm of 40 ℃
2/ s
(D) polyethylene ether oil (PVE) (alkoxy vinyl polymer, alkoxyl is the copolymer ether oil of ethyoxyl and isobutoxy): the viscosity 64.9mm of 40 ℃
2/ s
(E) polyethylene ether oil (PVE) (alkoxy vinyl polymer, the ether oil that alkoxyl is ethyoxyl): the viscosity 67.8mm of 40 ℃
2/ s
(F) naphthene series mineral oil: the viscosity 54.1mm of 40 ℃
2/ s
(G) be subject to resistance type polyol ester oil (H-POE) (the aliphatic acid ester oil of the 2 ethyl hexanoic acid of neopentyl glycol system): the viscosity 7.5mm of 40 ℃
2/ s
Table 1 represents the intermiscibility evaluation result of difluoromethane (HFC32) as cold-producing medium and refrigerator oil.In this table, in the refrigerating air conditioning device that uses existing cold-producing medium R410A, the intermiscibility evaluation result of the main refrigerator oil using is as shown in comparative example 7 and 8.
[table 1]
From this table, as the intermiscibility degree (being low temperature side critical solution temperature) of HFC32 and the refrigerator oil of cold-producing medium, according to the kind of refrigerator oil, there is very big-difference.By this table, can select the refrigerator oil mixing with HFC32.
In the combination of the cold-producing medium shown in embodiment 1 and refrigerator oil, low temperature side critical solution temperature is below-10 ℃.
Use refrigerator oil (B), (D), evaluate and the intermiscibility of HFC32, result as shown in comparative example 1 and 3, when low temperature side critical solution temperature is when more than+20 ℃, intermiscibility variation.
In addition,, as shown in comparative example 2, even if change the kinematic viscosity of polyalcohol ester oil, can not improve intermiscibility.
As shown in comparative example 6, also have the oil good with the intermiscibility of HFC32, but kinematic viscosity is 40mm
2below/s, be difficult to be applied to aircondition.
And then comparative example 5 represents the evaluation result of the intermiscibility of different types of oil, low temperature side critical solution temperature is more than+20 ℃, and therefore, intermiscibility is poor, is difficult to use.
In contrast to this, in embodiment 1, good with the intermiscibility of HFC32, and low temperature side critical solution temperature is below-10 ℃, therefore, can be applicable to refrigerating air conditioning device.
(embodiment 2～6)
(to the adsorptivity evaluation of ferrous material)
In the compound obtaining as the embodiment 1 of the intermiscibility of the key property of refrigerator oil,
In order to obtain lubricity, by with respect to above-claimed cpd coordinate 1～10 % by weight following chemical formula (2) represent additional polyalcohol ester oil (in formula, R
3represent the alkyl of carbon number 7～9) significantly improve the reliability of cooling air conditioner compressor and device.
[changing 6]
The good thermal stability that additional polyalcohol ester oil preferably obtains by the condensation reaction of polyalcohol and unary fatty acid be subject to resistance type.
As the preferred dipentaerythritol of polyalcohol of raw material.In dipentaerythritol, as impurity, contain a large amount of pentaerythrites or tripentaerythritol.
In addition, as the unary fatty acid of raw material, there is 2 ethyl hexanoic acid, 3,5,5-tri-methyl hexanoic acid etc., they can use separately or mix two or more uses.
As additional polyalcohol ester oil, can be compound polyalcohol ester oil (compound ester oil), it is the ester compounds being formed by polyalcohol, binary of fatty acids and unary fatty acid bonding.
At this, as the polyalcohol preference of raw material as neopentyl glycol, trimethylolpropane and pentaerythrite.In addition, as the unary fatty acid of raw material, there are positive valeric acid, n-caproic acid, positive enanthic acid, caprylic acid, 2-Methyl Butyric Acid, 2 methyl valeric acid, 2 methyl caproic acid, 2 ethyl hexanoic acid, isooctyl acid, 3,5,5-tri-methyl hexanoic acids etc., they can use separately or mix two or more uses.In addition, as the binary of fatty acids of raw material, have malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid etc., they can use separately or mix two or more uses.
As the cyclic ketal compound of refrigerator oil host or the kinematic viscosity of 40 ℃ of cyclic acetal compound, be preferably 40mm
2/ s～100mm
2/ s, the kinematic viscosity of 40 ℃ of additional polyalcohol ester oil is 180mm
2more than/s.
Above-mentioned cooling air conditioner compressor comprises the sliding part being formed by ferrous material, and the interface pressure of sliding part is more than 10MPa.
In above-mentioned cooling air conditioner compressor, additional polyalcohol ester oil is higher more than 10 times than refrigerator oil host to the adsorption capacity of ferrous material, when the poor lubricity of refrigerator oil host, the film strength of compressor sliding part reduces, cause wearing and tearing, the reliability of refrigerating air conditioning device also declines.Therefore, refrigerator oil composition is important parameter to the adsorptivity of sliding part.The position consisting of ferrous material in sliding part is many, and its surface forms iron oxide.Refrigerator oil in this description refers to the adsorption capacity of refrigerator oil to iron oxide substantially to the adsorption capacity of ferrous material.
Based on this viewpoint, in the present embodiment, use the Fe of average grain diameter 1 μ m
3o
4powder (the specific area 1.57m of (tri-iron tetroxide)
2/ g) the adsorption capacity of evaluation refrigerator oil.
By the concentration before and after the absorption of the refrigerator oil composition that dilutes in nuclear magnetic resonance spectroscopy (NMR) quantitative assay solvent, calculate the amount of croci absorption.Solvent is used hexane, and regulating each refrigerator oil composition is 0.3mol-ppm.Extract 3g croci and put into after 20ml screwed pipe, add the solution of 10g refrigerator oil composition, in ultrasonic washer, disperse 30 minutes, the supernatant of placing after 48 hours is carried out
1h-NMR analyzes.
At this, mol-ppm refers to take mole ppm(PPM as benchmark).That is, refer to the PPM calculating as molecule as denominator, take the molal quantity of solute take the molal quantity of solution (mixture of solvent and solute).
As test compound, use (A), (B), (D), (F) and (H) be subject to resistance type polyol ester oil (POE) (2 ethyl hexanoic acid/3 that dipentaerythritol is, the fatty acid mixed ester oil of 5,5-tri-methyl hexanoic acid) (the viscosity 217mm of 40 ℃
2/ s) implement the evaluation of above-mentioned adsorptivity.As its evaluation result, measure the adsorbance of compound to croci, result is as shown in table 2.
[table 2]
Hence one can see that, adsorbance (adsorption capacity) difference of each compound to croci, and polar compound more easily adsorbs ferrous material.In polar compound, the adsorbance of compound (H) in molecular structure with a large amount of ester groups is many.That is, (H) high more than 4.0 times than other refrigerator oil composition (A), (B), (D), (F) to the adsorption capacity of ferrous material (iron oxide).Particularly high more than 10 times than cyclic ketal compound of the present invention (A).Think thus, refrigerator oil composition (A) easily forms lubricating film by adding (H) on compressor sliding part.
Think that this is because following reason.
There is electronegative tendency in the oxygen of the carbonyl (C=O) containing in ester group.In contrast to this, generally there is hydration and form hydroxyl in iron oxide surface.Therefore, between the hydrogen existing in the hydroxyl of iron oxide surface and the oxygen of ester group, produce the gravitation being produced by Coulomb force, easily adsorb.
According to this result, use (H) as additional polyalcohol ester oil of the present invention.
(embodiment 7～10 and comparative example 9～11)
(lubricity evaluation)
The lubricity of the refrigerator oil of adsorptivity is confirmed in evaluation by embodiment.Use shell-type four-ball friction and wear test machine, evaluate the lubricity of refrigerator oil.Using 1/2 inch of SUJ2 steel ball as test film, in load: 280N, temperature: test under 120 ℃, the condition of rotating speed: 1200/min, time: 10min, then measure friction marks footpath (3 values are average) and the coefficient of friction of fixation test sheet.As refrigerator oil host, use (A), coordinate wherein (H) additional polyalcohol ester oil, it is evaluated.In addition, evaluate in (A) and be combined with TCP(tricresyl phosphate) refrigerator oil.As a comparative example 9～11, evaluate independent (A), to coordinating the refrigerator oil of (H) that be less than 1.0 % by weight in (A) and to the refrigerator oil that coordinates (H) that be greater than 10 % by weight in (A).
The result of lubricity of evaluating each refrigerator oil is as shown in table 3.
[table 3]
As shown in comparative example 9, in the situation that testing separately with (A), friction marks footpath is large, and coefficient of friction is high.In contrast to this, the refrigerator oil of the additional polyalcohol ester oil of (H) that be combined with 1～10 % by weight shown in embodiment 7～9, compared with independent (A), has suppressed friction marks footpath and coefficient of friction, has obtained lubricity and has improved effect.This be because: additional polyalcohol ester oil is greater than refrigerator oil host to the adsorption capacity of ferrous material, and therefore, the surface energy of rubbing surface reduces, and has obtained reducing the effect of wearability and coefficient of friction.
In addition, as described in Example 10, in (A), be combined with the TCP as common lubricity improver, can obtain significantly suppressing friction marks footpath and coefficient of friction, and improve the effect of lubricity.In additional polyalcohol ester oil, known as shown in comparative example 10, when use level is few, can not get sufficient lubricity and improve effect.In addition, as shown in comparative example 11, when use level is many, can obtains lubricity and improve effect, but produce the problem that kinematic viscosity increases and intermiscibility reduces, therefore, preferably use level is below 10 % by weight.
(embodiment 11,12 and comparative example 12～16)
(evaluation of air-conditioning real machine)
Fig. 1 represents the skeleton diagram of the cooling and warming dual-purpose type indoor air conditioner using in the present embodiment.
Indoor air conditioner 50 consists of indoor set 51 and off-premises station 52.In indoor set 51, be built-in with indoor heat converter 5.In addition, in off-premises station 52, be built-in with compressor 100, cross valve 2, outdoor heat converter 3 and expansion gear 4(bulge).Compressor 100 possesses the refrigerant compression portion with sliding part.
To indoor refrigeration in the situation that, in compressor 100, the refrigerant gas of the HTHP of insulated compression is used as condensing unit at outdoor heat converter 3(after discharge pipe and cross valve 2) in be cooled, become the liquid refrigerant of high pressure.This cold-producing medium by expansion gear 4(for example, capillary or temperature-type expansion valve etc.) expand, become the only low-temp low-pressure liquid containing a small amount of gas, arriving indoor heat converter 5(uses as vaporising device), from room air, obtain heat and again through cross valve 2, arrive compressor 1 with cryogenic gas state.To indoor heating in the situation that, by cross valve 2, change the flow direction of cold-producing medium in the other direction, realize reaction.As compressor 100, use scroll compressor.
Fig. 2 represents the schematic configuration of above-mentioned scroll compressor.
Compressor 100 comprises: have the scroll scroll 8 being vertically installed on end plate 7 fixed scroll member 6, have with the framework 14 of the rotary vortex rotary part 9 of the scroll 10 of this fixed scroll member 6 substantially the same shapes, supporting rotary vortex rotary part 9, make the pressure vessel 15 of bent axle 11, motor 17 and built-in above-mentioned part that rotary vortex rotary part 9 rotatablely moves.Scroll scroll 8 engagement relative to scroll 10, forms compression mechanical part.
When rotary vortex rotary part 9 rotatablely moves by bent axle 11, discharge chambe 12(12a, the 12b etc. that between fixed scroll member 6 and rotary vortex rotary part 9, form) in, be positioned at outermost discharge chambe 12 along with the volume that rotatablely moves dwindles gradually, to the central part of fixed scroll member 6 and rotary vortex rotary part 9, move simultaneously.When discharge chambe 12 arrives near the central part of fixed scroll member 6 and rotary vortex rotary part 9, discharge chambe 12 is communicated with outlet 13, and the Compressed Gas of discharge chambe 12 inside is discharged to compressor 100 outsides from discharge pipe 16.
In compressor 100, bent axle 11 rotates with constant speed or according to the rotary speed of the voltage of the converter Control by not shown, carries out compressed action.In addition, motor 17 belows are provided with oil storage portion 20, and the oil of oil storage portion 20 passes through the oilhole 19 that is arranged at bent axle 11 by pressure differential, lubricated for the sliding part of rotary vortex rotary part 9 and bent axle 11, sliding bearing 18 etc.
In embodiment 11,12 and comparative example 12～16, use the indoor air conditioner shown in Fig. 1, indoor set is arranged in thermostatic chamber (35 ℃ of room temperatures, humidity 75%), turn round 2160 hours, carry out real machine test.Heat-resisting PET film (Type B, 130 ℃) is used in the iron core of engine and the insulation of coil, the dual coated copper cash that the major insulation of coil is used the bilayer that implements polyesterimide-amide imide to apply.
In the evaluation of indoor air conditioner, be conceived to the state of wear of scroll compressor, measure the gap recruitment being caused by the wearing and tearing between the framework～axle before and after real machine test.Demonstrate gap recruitment between framework～axle larger, wear extent is larger, and in general, vibration and noise are along with gap recruitment increases and becomes greatly.
As cold-producing medium, use difluoromethane (HFC32).The advantage of difluoromethane is, the refrigeration air-conditioner circulation of existing R410A machine almost can directly be used.In refrigeration air-conditioner circulation, the intermiscibility of cold-producing medium and refrigerator oil is for guaranteeing to the key property of the recirculating oil quantity of compressor, identical with cold-producing medium, and refrigerator oil also must circulation.When intermiscibility is poor, the refrigerator oil of discharging by mechanical component from compressor does not circulate, the raw delay of fry dried food ingredients particularly separating at low-temp. portion, and cause the oil mass in compressor to reduce, hinder the lubricated of sliding part.Therefore, preferably temperature range inner refrigerant and the refrigerator oil of the operating condition in circulation dissolve.
In the present embodiment, proposed to there is intermiscibility with difluoromethane, and confirmed that lubricity improves the embodiment 8 of effect and the refrigerator oil of embodiment 10.As a comparative example, evaluated (B) poor with the intermiscibility of difluoromethane and (D).In addition, for be used as existing cold-producing medium R410A (B) and (D) also compare evaluation.
In this test, the state of preferred compressor is: the gap recruitment (the gap recruitment of sliding bearing) being caused by the wearing and tearing between the framework～axle after test is below 10 μ m; And guaranteed the oily residual quantity of compressor.
Table 4 represents the result of embodiment 11,12 and comparative example 12～16.
[table 4]
In this table, as shown in comparative example 15 and 16, in existing R410A machine, the gap recruitment between the framework～axle of compressor is little, and has fully guaranteed the oily residual quantity of the refrigerator oil in compressor.But, as shown in comparative example 12 and 13, with the poor combination of the intermiscibility of difluoromethane under situation about implementing, the refrigerator oil residual quantity of compressor reduces, and can not guarantee sufficient oil film, therefore, it is large that the gap between framework～axle increases quantitative change.Even good but can not get sufficient lubricity as shown in comparative example 14 in the situation that with the intermiscibility of difluoromethane, even if guaranteed the refrigerator oil residual quantity of compressor, also can not get required oil film thickness, therefore, it is large that the gap between framework～axle increases quantitative change.
In contrast to this, the refrigerating air conditioning device shown in embodiment 11,12 can significantly reduce the gap recruitment between framework～axle, and can guarantee the residual quantity of the refrigerator oil of compressor, and therefore, the reliability of refrigerating air conditioning device is able to height.
From the result of above embodiment, refrigerating air conditioning device of the present invention can either suppress the wearing and tearing of compressor, can fully guarantee again the reliability of long-term insulation.
In addition confirm, in rotary compressor, two-spool compressor, two-stage compressing rotating compressor and roller and the integrated oscillating compressor of blade, also can obtain identical effect.
Industrial applicability
The present invention is applicable to cooling air conditioner compressor and refrigerating air conditioning device.
Symbol description
100: compressor; 2: cross valve; 3: outdoor heat converter; 4: expansion gear; 5: indoor heat converter; 6: fixed scroll member; 7: end plate; 8: scroll scroll; 9: rotary vortex rotary part; 10: scroll; 11: bent axle; 12,12a, 12b: discharge chambe; 13: outlet; 14: framework; 15: pressure vessel; 16: discharge pipe; 17: motor; 18: sliding bearing; 19: oilhole; 20: oil storage portion; 50: indoor air conditioner; 51: indoor set; 52: off-premises station.
Claims (according to the modification of the 19th article of treaty)
1. cooling air conditioner compressor, possesses the refrigerant compression portion with sliding part, encloses the difluoromethane and the refrigerator oil that have as cold-producing medium, it is characterized in that,
Described refrigerator oil contains: the kinematic viscosity of 40 ℃ being represented by following chemical formula (1) is 40～100mm
2the compound of/s (in formula, R
1～R
2represent the alkyl of hydrogen or carbon number 1～3) and the base oil forming and the additional polyalcohol ester oil being represented by following chemical formula (2) (in formula, R
3represent the alkyl of carbon number 7～9), described additional polyol ester oil composition is 1～10 % by weight,
2. cooling air conditioner compressor claimed in claim 1, is characterized in that, described refrigerator oil is cyclic ketal compound or cyclic acetal compound.
3. the cooling air conditioner compressor described in claim 1 or 2, is characterized in that, the low temperature side critical solution temperature of described cold-producing medium and refrigerator oil is below-10 ℃.
4. refrigerating air conditioning device, is characterized in that, right to use requires the cooling air conditioner compressor described in 1～3 any one.
Claims (5)
1. cooling air conditioner compressor, possesses the refrigerant compression portion with sliding part, encloses the difluoromethane and the refrigerator oil that have as cold-producing medium, it is characterized in that,
Described refrigerator oil is 40～100mm the kinematic viscosity of 40 ℃
2/ s, and the compound that following chemical formula (1) is represented (in formula, R
1～R
2represent the alkyl of hydrogen or carbon number 1～3) as base oil,
2. cooling air conditioner compressor, possesses the refrigerant compression portion with sliding part, encloses the difluoromethane and the refrigerator oil that have as cold-producing medium, it is characterized in that,
Described refrigerator oil contains: the kinematic viscosity of 40 ℃ being represented by following chemical formula (1) is 40～100mm
2the compound of/s (in formula, R
1～R
2represent the alkyl of hydrogen or carbon number 1～3) and the base oil forming and the additional polyalcohol ester oil being represented by following chemical formula (2) (in formula, R
3represent the alkyl of carbon number 7～9), described additional polyol ester oil composition is 1～10 % by weight,
3. the cooling air conditioner compressor described in claim 1 or 2, is characterized in that, described refrigerator oil is cyclic ketal compound or cyclic acetal compound.
4. the cooling air conditioner compressor described in claim 1～3 any one, is characterized in that, the low temperature side critical solution temperature of described cold-producing medium and refrigerator oil is below-10 ℃.
5. refrigerating air conditioning device, is characterized in that, right to use requires the cooling air conditioner compressor described in 1～4 any one.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011217497A JP5562920B2 (en) | 2011-09-30 | 2011-09-30 | Compressor for refrigeration and air-conditioning equipment |
| JP2011-217497 | 2011-09-30 | ||
| PCT/JP2012/065516 WO2013046822A1 (en) | 2011-09-30 | 2012-06-18 | Compressor for refrigeration and air conditioning, and refrigeration and air conditioning device |
Publications (2)
| Publication Number | Publication Date |
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| CN103733003A true CN103733003A (en) | 2014-04-16 |
| CN103733003B CN103733003B (en) | 2015-10-21 |
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| CN201280039535.9A Active CN103733003B (en) | 2011-09-30 | 2012-06-18 | Cooling air conditioner compressor and refrigerating air conditioning device |
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|---|---|
| JP (1) | JP5562920B2 (en) |
| KR (1) | KR101587205B1 (en) |
| CN (1) | CN103733003B (en) |
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| CN105680644A (en) * | 2014-11-20 | 2016-06-15 | 上海日立电器有限公司 | Method for improving insulating property of compressor motor and insulation structure of compressor motor |
| CN108291166A (en) * | 2015-12-25 | 2018-07-17 | 日油株式会社 | Refrigerating machine oil ester |
| CN110537024A (en) * | 2017-02-10 | 2019-12-03 | 卡诺压缩机有限公司 | It is integrated with the energy regenerating circulatory turbine of capillary channel gas compressor |
| US11209023B2 (en) | 2017-02-10 | 2021-12-28 | Carnot Compression Inc. | Gas compressor with reduced energy loss |
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| JP2015017730A (en) * | 2013-07-10 | 2015-01-29 | 日立アプライアンス株式会社 | Air conditioner |
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| JPWO2017145278A1 (en) * | 2016-02-24 | 2018-10-11 | 三菱電機株式会社 | Refrigeration equipment |
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| CN105680644A (en) * | 2014-11-20 | 2016-06-15 | 上海日立电器有限公司 | Method for improving insulating property of compressor motor and insulation structure of compressor motor |
| CN105680644B (en) * | 2014-11-20 | 2019-01-29 | 上海海立电器有限公司 | Improve the method and compressor electric motor insulation system of compressor electric motor insulation performance |
| CN108291166A (en) * | 2015-12-25 | 2018-07-17 | 日油株式会社 | Refrigerating machine oil ester |
| CN108291166B (en) * | 2015-12-25 | 2021-05-28 | 日油株式会社 | Ester for refrigerator oil |
| CN110537024A (en) * | 2017-02-10 | 2019-12-03 | 卡诺压缩机有限公司 | It is integrated with the energy regenerating circulatory turbine of capillary channel gas compressor |
| US10920793B2 (en) | 2017-02-10 | 2021-02-16 | Carnot Compression Inc. | Energy recovery-recycling turbine integrated with a capillary tube gas compressor |
| US11209023B2 (en) | 2017-02-10 | 2021-12-28 | Carnot Compression Inc. | Gas compressor with reduced energy loss |
| US11725672B2 (en) | 2017-02-10 | 2023-08-15 | Carnot Compression Inc. | Gas compressor with reduced energy loss |
| US11835067B2 (en) | 2017-02-10 | 2023-12-05 | Carnot Compression Inc. | Gas compressor with reduced energy loss |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101587205B1 (en) | 2016-01-20 |
| CN103733003B (en) | 2015-10-21 |
| WO2013046822A1 (en) | 2013-04-04 |
| KR20140039311A (en) | 2014-04-01 |
| JP2013076533A (en) | 2013-04-25 |
| JP5562920B2 (en) | 2014-07-30 |
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Effective date of registration: 20160815 Address after: Hongkong, China Patentee after: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd. Address before: Tokyo, Japan Patentee before: Hitachi Appliances Inc. |
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Effective date of registration: 20180702 Address after: Tokyo, Japan, Japan Patentee after: Hitachi Johnson Controls Air Conditioning Co., Ltd. Address before: Hongkong, China Patentee before: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd. |