WO2020194762A1 - Procédé de production d'une composition de lubrification et composition de lubrification produite par celui-ci, compresseur et système de réfrigération l'utilisant - Google Patents

Procédé de production d'une composition de lubrification et composition de lubrification produite par celui-ci, compresseur et système de réfrigération l'utilisant Download PDF

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Publication number
WO2020194762A1
WO2020194762A1 PCT/JP2019/016410 JP2019016410W WO2020194762A1 WO 2020194762 A1 WO2020194762 A1 WO 2020194762A1 JP 2019016410 W JP2019016410 W JP 2019016410W WO 2020194762 A1 WO2020194762 A1 WO 2020194762A1
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Prior art keywords
lubricating
temperature
reagent
compressor
scroll
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PCT/JP2019/016410
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English (en)
Japanese (ja)
Inventor
善彰 宮本
典久 洞口
孝生 石本
Original Assignee
三菱重工サーマルシステムズ株式会社
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Application filed by 三菱重工サーマルシステムズ株式会社 filed Critical 三菱重工サーマルシステムズ株式会社
Priority to GB2113548.8A priority Critical patent/GB2596670B/en
Priority to DE112019007077.0T priority patent/DE112019007077T5/de
Publication of WO2020194762A1 publication Critical patent/WO2020194762A1/fr

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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
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • 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
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/041—Triaryl phosphates
    • 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
    • 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
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
    • F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
    • F01C17/066—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with an intermediate piece sliding along perpendicular axes, e.g. Oldham coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/14—Lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps

Definitions

  • the present invention relates to a method for producing a lubricating composition, a lubricating composition produced thereby, and a compressor and a freezing system using the same.
  • the freezer consists of at least a compressor, a condenser, an expansion valve and an evaporator.
  • each component is connected as a closed circuit by a refrigerant pipe, and the mixed liquid in which the refrigerant and the refrigerating machine oil are compatible circulates in the sealed system.
  • HFC-based refrigerant is used under a higher pressure than the previously used CFC (chlorofluorocarbon) -based or HCFC (hydrochlorofluorocarbon) -based refrigerant.
  • the pressure load is high in the compressor of the freezing device that uses the HFC-based refrigerant.
  • Refrigerating machine oil is responsible for lubricating the compressor.
  • the refrigerating machine oil includes a base oil and a lubricant.
  • a scroll compressor equipped with a fixed scroll and a swivel scroll as a type of compressor.
  • the scroll compressor is equipped with an old dumb link to prevent the rotation of the scroll scroll and to perform the revolution rotation motion.
  • the Oldham link slides back and forth along the groove as the swivel scroll moves.
  • the present disclosure has been made in view of such circumstances, and provides a refrigerating machine oil (lubrication composition) capable of improving the wear resistance of the Oldham link during high oil temperature and low speed operation from the current state, and a method for producing the same.
  • the purpose is to do.
  • the method for producing the lubricating composition of the present disclosure the lubricating composition produced by the method, and the compressor and the freezing system using the same adopt the following means.
  • the temperature at which the thermal weight change is 0.675% or more and 0.825% or less is defined as the decomposition start temperature, and as an additive for improving the lubrication characteristics, the decomposition start temperature is in the temperature range of 70 ° C. or more and 90 ° C. or less.
  • a method for producing a lubricating composition comprising a selection step of selecting a lubricating reagent in the above, and a blending step of blending the selected lubricating reagent with respect to the base oil in an amount of 1% by weight or more and 5% by weight or less.
  • Additives that improve lubrication characteristics are decomposed by heat and their weight changes (decreases).
  • the thermal weight decreased from the initial state by 0.675% or more and 0.825% or less, preferably 0.7125% or more and 0.7875% or less, and more preferably 0.75%.
  • the temperature is defined as the decomposition start temperature, and the lubricating reagent is selected based on the decomposition start temperature.
  • thermogravimetric change is about ⁇ 10% centered on 0.75%.
  • the thermogravimetric rate of change is obtained from the thermogravimetric analysis chart. If the thermogravimetric change is too small (for example, 0.3%), it is difficult to see the inflection point. If too much, it is likely that the options will include lubricating reagents that do not improve wear resistance.
  • the oil temperature during high oil temperature and low speed operation was 70 ° C to 90 ° C, and the temperature of the sliding portion of the Oldham link was a little over 90 ° C.
  • the lubricating reagent whose decomposition is started in this temperature range (70 ° C. or higher and 90 ° C. or lower) can exhibit a function as an extreme pressure agent / anti-wear agent at the Older Link during high oil temperature and low speed operation. If the decomposition start temperature is too low, problems may occur in the chemical stability of the lubricating reagent such as oxidation stability. If the decomposition start temperature is too high, a tribo film is difficult to form on the surface of the Oldham link during low-speed operation, and sufficient lubrication performance is not exhibited.
  • the selection step comprises the step of selecting a high temperature lubricating reagent in a temperature range in which the decomposition start temperature exceeds 90 ° C. from among the additives that improve the lubricating characteristics.
  • the step can include the step of blending the selected high temperature lubricating reagent into the base oil.
  • a lubricating composition capable of exhibiting lubricating performance in a wide temperature range can be obtained.
  • the present disclosure comprises an oldham link made of iron or aluminum alloy having a protruding key and a member having a keyway into which the key is inserted and having a material different from that of the oldam link.
  • a compressor supplied with a lubricating composition made of an aluminum alloy or iron and produced by the production method described in the above embodiment.
  • the present disclosure provides a freezing system equipped with the above compressor.
  • the present disclosure includes a lubricating reagent selected from a base oil and an additive that improves lubrication characteristics, and exhibiting a thermal weight change of 0.675% or more and 0.825% or less in a temperature range of 70 ° C. or higher and 90 ° C. or lower.
  • a lubricating composition containing 1% by weight or more and 5% by weight or less of the lubricating reagent with respect to the base oil.
  • thermogravimetric analysis chart figure of reagent A It is a thermogravimetric analysis chart figure of the reagent B. It is a thermogravimetric analysis chart figure of reagent C. It is a figure which shows the relationship of the wear depth with respect to a refrigerant / refrigerating machine oil. It is a figure which shows the relationship between the amount of TBP addition and the wear depth.
  • the method for producing a lubricating composition according to the present embodiment includes a selection step of selecting a lubricating reagent and a blending step of blending the selected lubricating reagent with the base oil.
  • a lubricating reagent having a decomposition start temperature in the temperature range of 70 ° C. or higher and 90 ° C. or lower is selected as an additive for refrigerating machine oil for improving lubrication characteristics.
  • the decomposition start temperature is the temperature at which the lubricating reagent begins to change (decrease) in weight due to heat.
  • the decomposition start temperature of the lubricating reagent can be obtained by thermogravimetric analysis. In thermogravimetric analysis, the temperature of a sample and a reference substance are changed in the same manner, the electrical energy required for the temperature is changed, and the reaction temperature such as oxidation / decomposition is specified. Thermogravimetric analysis can be performed by a differential thermal analyzer (DTA). If the decomposition start temperature of the reagent is published in a catalog or the like, it may be used.
  • DTA differential thermal analyzer
  • the amount of weight change (decrease) from the initial state of the lubricating reagent is 0.675% or more and 0.825% or less, preferably 0.7125% or more and 0.7875% or less, and more preferably 0.75%. Is defined as the "decomposition start temperature".
  • the lubricating reagent is blended in an amount of 1 wt% or more and 5 wt% or less, preferably 1 wt% or more and 3 wt% or less with respect to the base oil.
  • a lubricating oil composition (refrigerating machine oil) is obtained by blending a lubricating reagent with a base oil.
  • the base oil may be polyol ester (POE), polyvinyl ether (PVE), polyalkylene glycol (PAG), mineral oil and the like.
  • the base oil may have an ester bond in its molecular structure.
  • additives or the like that improve thermal stability may be further compounded.
  • the lubricating composition produced according to the above embodiment is suitable for use in a scroll compressor equipped with an Oldham link.
  • the material of the Oldham link should be iron or aluminum alloy.
  • FIG. 1 is a vertical cross-sectional view of a scroll compressor to which a lubricating composition can be supplied.
  • the scroll compressor (scroll fluid machine) 1 is provided in the refrigerant circuit (refrigerant system) of the air conditioner, compresses the gas refrigerant supplied from the evaporator, and supplies the high-pressure gas refrigerant to the condenser. ..
  • the scroll compressor 1 includes a fixed scroll 3 and a swivel scroll 4 that revolves around the fixed scroll 3 in the housing 2.
  • the fixed scroll 3 is fixed to the housing 2 via the upper bearing 21, and includes a scroll-shaped wall body 33 erected on the end plate 31.
  • the swivel scroll 4 includes a scroll-shaped wall body 43 erected on the end plate 41.
  • the wall body 33 of the fixed scroll 3 and the wall body 43 of the swivel scroll 4 have substantially the same shape.
  • a plurality of sealed compression spaces R1 are formed by rotating the swivel scroll 4 by 180 ° with respect to the fixed scroll 3 and engaging the walls 33 and 43 with each other.
  • the turning scroll 4 revolves with respect to the fixed scroll 3 in a state where the rotation is restricted by the Oldham link 23.
  • the swivel scroll 4 is rotated by the driving motor 6.
  • the rotary shaft 5 rotated by the motor 6 is connected to the swivel scroll 4 via the crank pin 27.
  • the crank pin 27 is provided eccentrically with respect to the central axis of the rotating shaft 5.
  • the crank pin 27 is rotatably connected to a boss formed on the back surface (lower surface in the drawing) of the end plate 41 of the swivel scroll 4 via a drive bush and a drive bearing 52.
  • the rotating shaft 5 is rotatably supported by an upper bearing 21 and a lower bearing 24 fixed to the housing 2.
  • a storage area 26 for storing the lubricating composition (lubricating oil O) is provided in the lower part of the housing 2.
  • the lubricating oil O is pumped by a pump 54 provided at the lower end of the rotating shaft 5 through an oil supply path 53 inside the rotating shaft 5, and is provided around the lower bearing 24, the upper bearing 21, and the crank pin 27.
  • the swivel scroll 4, the old dam link 23, and the like are provided at the lower end of the rotating shaft 5 through an oil supply path 53 inside the rotating shaft 5, and is provided around the lower bearing 24, the upper bearing 21, and the crank pin 27.
  • the housing 2 is provided with a suction pipe 28 for sucking the low-pressure gas refrigerant and a discharge pipe 29 for discharging the compressed high-pressure gas refrigerant.
  • the suction pipe 28 and the discharge pipe 29 are connected to a refrigerant circuit of an air conditioner (not shown).
  • the scroll compressor 1 described above operates as follows.
  • a driving current is supplied to the stator 61 of the motor 6 from a power source (not shown)
  • the rotor 62 of the motor 6 rotates and the driving force is output to the rotating shaft 5.
  • the driving force is swiveled and scrolled via a crank pin 27 provided at the upper end of the rotary shaft 5 eccentrically in one direction (eccentric direction) outward from the central axis of the rotary shaft 5. It is transmitted to 4.
  • the swivel scroll 4 revolves around the fixed scroll 3 while being prevented from rotating due to the action of the old dumb link 23.
  • the refrigerant flowing in from the suction pipe 28 is sucked between the swirl scroll 4 and the fixed scroll 3. Then, as the swivel scroll 4 swivels, the volume of the compression space R1 between the swivel scroll 4 and the fixed scroll 3 decreases, so that the refrigerant is compressed in the compression space R1.
  • the compressed refrigerant is discharged to the refrigerant circuit by the discharge pipe 29 via the discharge port 32 of the fixed scroll 3 and the discharge port 38 of the discharge cover 37.
  • a multi-port 32A is formed in the fixed scroll 3, and the multi-port 32A is provided with a lead valve 36 attached to the end plate 31 of the fixed scroll 3 via a retainer 35.
  • the discharge port 38 of the discharge cover 37 is also provided with a lead valve 37B attached to the discharge cover 37 via the retainer 37A.
  • FIG. 2 and 3 show the Oldham link 23 shown in FIG.
  • the old dam link 23 is provided above the upper bearing 21.
  • the Oldham link 23 is provided on the back surface side of the end plate 41 of the swivel scroll 4.
  • the Oldham link 23 has a substantially ring shape when viewed in a plan view.
  • keys 23A projecting downward are provided on both the left and right sides, that is, at the positions of 3 o'clock and 9 o'clock.
  • keys 23B protruding upward are provided on both the upper and lower sides, that is, at the positions of 6 o'clock and 12 o'clock. That is, the direction in which the two keys 23A are provided and the direction in which the two keys 23B are provided are provided so as to be orthogonal to each other.
  • each key 23A projecting downward is inserted into a key groove 21A formed in the upper bearing 21.
  • each key 23B projecting upward is inserted into a key groove formed in the end plate 41 of the swivel scroll 4.
  • the upper bearing 21 and the swivel scroll 4 may be made of a material different from that of the Oldam link 23.
  • the material of the old dam link 23 is iron
  • the material of the keyway formed in the upper bearing 21 and the swivel scroll 4 is preferably aluminum.
  • the material of the old dam link 23 is aluminum
  • the material of the keyway formed in the upper bearing 21 and the swivel scroll 4 is preferably iron.
  • FIG. 4 is a block diagram of a freezing system including the scroll compressor 1.
  • the refrigeration system includes a scroll compressor 1, a condenser 12, an expansion valve 13, and an evaporator 14, and each element flows and conveys a refrigerant through pipes 15a to 15d. It is connected.
  • the condenser 12 condenses / liquefies the high-temperature and high-pressure refrigerant gas to dissipate heat, and the expansion valve 13 adiabatically expands the high-temperature and high-pressure liquid refrigerant that has passed through the condenser 12 to reduce the pressure, and the evaporator 14
  • the low-temperature low-pressure liquid refrigerant that has passed through the expansion valve 13 is evaporated / vaporized to absorb heat
  • the scroll compressor 1 adiabatically compresses the low-temperature low-pressure refrigerant gas that has passed through the evaporator 14.
  • the high-temperature and high-pressure refrigerant gas that has passed through the scroll compressor 1 is supplied to the condenser 12.
  • the lubricating composition supplied to the scroll compressor 1 goes around the refrigeration system including the evaporator 14, the expansion valve 13 and the condenser in a state of being mixed with the refrigerant, and returns to the compressor.
  • the lubricating composition of the freezing system is sealed in the system together with the refrigerant and is used for the duration of the freezing system without being replaced.
  • the temperature of the lubricating composition near the Oldam Link 23 during high oil temperature and low speed operation is 80 ° C ⁇ 10 ° C.
  • a lubricating reagent having a decomposition starting temperature in a temperature range of 70 ° C. or higher and 90 ° C. or lower forms a low-shear tribo film on the sliding surface of the Oldham link during low-speed operation, and lowers the friction coefficient of the sliding portion.
  • the lubricating reagent having the decomposition start temperature in the temperature range of 70 ° C. or higher and 90 ° C. or lower has an effect of reducing the amount of wear.
  • the selection step may further include the step of selecting a high temperature lubricating reagent.
  • the blending step may further include the step of blending the selected high temperature lubricating reagent into the base oil.
  • one or a plurality of additives having a decomposition start temperature in a temperature range exceeding 90 ° C. are selected from among extreme pressure agents or additives functioning as lubricants.
  • the high temperature lubricating reagent is blended in an amount of 0.1 wt% or more and 5 wt%, preferably 0.1 wt% or more and 3 wt% or less with respect to the base oil.
  • TPP Triphenyl phosphate
  • JC-224 Ethyl diethyl phosphonoacetate
  • TBP Tributyl phosphate
  • FIG. 5 is a diagram showing a change in thermogravimetric analysis of reagent A (TPP).
  • FIG. 6 is a diagram showing a thermogravimetric change of reagent B (JC-224).
  • FIG. 7 is a diagram showing a change in thermogravimetric analysis of reagent C (TBP).
  • TPP thermogravimetric analysis of reagent A
  • JC-224 thermogravimetric change of reagent B
  • TBP thermogravimetric change in reagent C
  • TPP thermogravimetric analysis of reagent C
  • the horizontal axis is time (minutes)
  • the left vertical axis is thermogravimetric change (%)
  • the right vertical axis is temperature (° C.).
  • Table 1 the temperature at the time when the thermogravimetric change becomes 0.75% from FIGS. 5, 6 and 7 is read and described as the decomposition start temperature.
  • reagents A, B, and C had low acid values.
  • the decomposition temperatures of reagents B and C changed by only a few ° C, but the decomposition start temperature differed by about 85 ° C.
  • a wear resistance was evaluated by sliding a fixed piece and a rotating piece according to JIS K 7218 using a ring-on-disk refrigerant atmosphere friction test device.
  • the fixed piece was made of ADC12, which is an Al—Si—Cu alloy, and the surface was coated with hard alumite.
  • ADC12 Al—Si—Cu alloy
  • FC200 flake graphite cast iron
  • Table 2 shows the test conditions.
  • FIG. 8 is a diagram showing the relationship of wear depth with respect to the refrigerant / refrigerating machine oil.
  • FIG. 9 is a diagram showing the relationship between the amount of TBP added in Test 3 and the wear depth of the fixed piece.
  • the horizontal axis represents the amount of TBP added (wt%), and the vertical axis represents the wear depth ( ⁇ m) of the fixed piece.
  • the wear depth of TBP (1 wt%, 5 wt% added) in Test 2 was about 3 ⁇ m, which was the lowest as compared with Tests 1 and 3.
  • the amount of wear in Test 3 with JC-224 added was lower than that without TBP in Test 2, but it was higher than in Test 1 with R410A refrigerant.
  • Both JC-224 and TBP are phosphorus compounds, but they have different decomposition start temperatures.
  • the decomposition start temperature of TBP is equal to or lower than the oil temperature at the start of the test of this test. Therefore, it is expected that TBP was decomposed during the test to form a tribo film, while JC-244, whose decomposition start temperature was about 85 ° C higher than the test start temperature of this test, did not form a tribo film. ..

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Rotary Pumps (AREA)
  • Lubricants (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

Le but de la présente invention est de fournir : une huile de réfrigération (composition de lubrification) permettant d'améliorer la résistance à l'usure d'un joint d'Oldham pendant une opération à haute température d'huile/faible vitesse ; et son procédé de production. La présente invention concerne un procédé de production d'une composition de lubrification qui comprend : une étape de sélection consistant à faire une sélection d'un réactif de lubrification, en tant qu'additif pour améliorer les caractéristiques de lubrification, ayant une température de début de décomposition qui est dans une plage de température de 70 à 90 °C, la température de début de décomposition étant la température à laquelle le changement de thermogravité est de 0,675 à 0,825 % ; et une étape de mélange consistant à mélanger le réactif de lubrification sélectionné, en une quantité de 1 à 5 % en poids, dans une huile de base.
PCT/JP2019/016410 2019-03-25 2019-04-17 Procédé de production d'une composition de lubrification et composition de lubrification produite par celui-ci, compresseur et système de réfrigération l'utilisant WO2020194762A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2113548.8A GB2596670B (en) 2019-03-25 2019-04-17 Method for producing a refrigeration oil, refrigeration oil produced by same, and compressor and refrigeration system using same
DE112019007077.0T DE112019007077T5 (de) 2019-03-25 2019-04-17 Verfahren zum Produzieren einer Schmierzusammensetzung, Schmierzusammensetzung, die durch dasselbe produziert wird, und Kompressor und Kühlsystem, die dieselbe verwenden

Applications Claiming Priority (2)

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JP2019056822A JP6651664B1 (ja) 2019-03-25 2019-03-25 潤滑組成物の製造方法およびそれにより製造された潤滑組成物、ならびにそれを用いた圧縮機および冷凍システム
JP2019-056822 2019-03-25

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WO2020194762A1 true WO2020194762A1 (fr) 2020-10-01

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JP (1) JP6651664B1 (fr)
DE (1) DE112019007077T5 (fr)
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0932747A (ja) * 1995-07-21 1997-02-04 Matsushita Electric Ind Co Ltd スクロール圧縮機
JP2000129275A (ja) * 1998-10-29 2000-05-09 Hitachi Ltd 冷凍・空調機用作動媒体組成物及び該組成物を用いた冷凍・空調装置
JP2003524062A (ja) * 2000-02-25 2003-08-12 エクソンモービル リサーチ アンド エンジニアリング カンパニー 改良された特性を有するホスフェートエステル作動流体
CN108865346A (zh) * 2018-05-31 2018-11-23 苏州佑君环境科技有限公司 一种可生物降解润滑油的制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0932747A (ja) * 1995-07-21 1997-02-04 Matsushita Electric Ind Co Ltd スクロール圧縮機
JP2000129275A (ja) * 1998-10-29 2000-05-09 Hitachi Ltd 冷凍・空調機用作動媒体組成物及び該組成物を用いた冷凍・空調装置
JP2003524062A (ja) * 2000-02-25 2003-08-12 エクソンモービル リサーチ アンド エンジニアリング カンパニー 改良された特性を有するホスフェートエステル作動流体
CN108865346A (zh) * 2018-05-31 2018-11-23 苏州佑君环境科技有限公司 一种可生物降解润滑油的制备方法

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DE112019007077T5 (de) 2021-12-09
JP6651664B1 (ja) 2020-02-19
GB2596670A (en) 2022-01-05
GB2596670B (en) 2023-12-13
GB202113548D0 (en) 2021-11-10
JP2020158566A (ja) 2020-10-01

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