CN105349105B - Refrigerant composition - Google Patents
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- CN105349105B CN105349105B CN201410414307.6A CN201410414307A CN105349105B CN 105349105 B CN105349105 B CN 105349105B CN 201410414307 A CN201410414307 A CN 201410414307A CN 105349105 B CN105349105 B CN 105349105B
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Abstract
The present invention about a kind of refrigerant composition, containing weight percent be 70%-75% difluoromethane and weight percent be 25%-30% pentafluoroethane, and further include at least one lubricant.The lubricant is selected from mineral oil, silicone, polyoxyethylene alkylphenyl, polyol ester, gathers and stretch alkyl diol, gather and stretch alkyl diol ester, polyvinylether, poly- (alpha-olefin).The refrigerant composition is a kind of heat-transfer fluid with highly desired and not expectable excellent properties.
Description
Technical field
The present invention is about a kind of refrigerant composition, specifically for composed by pentafluoroethane (R125) and difluoromethane (R32)
Refrigerant composition.
Background technique
Refrigerant, also known as refrigerant, refrigerant, refrigerant are that a kind of by liquid to be changed into gaseous state situation absorption refrigerating empty
Interior heat, so that a kind of substance that temperature reduces.And one of principle of refrigeration system refrigeration is to utilize compression
The gaseous coolant of low-pressure low-temperature is compressed into the gaseous coolant of high temperature and pressure by machine, then condensing agent is recycled to be allowed to liquefy, and is formed
The liquid refrigerants of high normal pressure and temperature, and recycle and reuse.Chlorofluorocarbons refrigerant used in refrigerating and air conditioning can be divided mainly into three classes,
The first kind is CFC refrigerant (complete fully halogenated chlorofluorocarbons) such as R11, R12, R13, is contained in such chlorofluorocarbons
Chlorine, therefore it is higher to destroy ozone layer index；Second class is HCFC refrigerant (chlorofluorocarbons containing chlorine element), such as R22 and R134a
Deng although wherein also containing chlorine, due to having a hydrogen ion therefore its depletion of the ozone layer index is lower, disadvantage is that itself has toxicity
And great amount of carbon dioxide can be discharged in its production process and in turn results in greenhouse effects；Third class is the hfc refrigerant (chlorine containing protium
Carbon compound), such as R410A, R407C etc., since it is without chlorine therefore at present as the new alterntive refrigerant for not destroying ozone layer,
This refrigerant is referred to as environmentally friendly refrigerant.
R410A be it is a kind of the mixing refrigerant that 50 weight % are mixed respectively is accounted for by R32 and R125, be mainly used for substituting
R22 has many advantages, such as cleaning, hypotoxicity, stabilization, non-combustible, good refrigeration effect.
However, on the market for the refrigerant with more preferable refrigeration effect, there is still a need to.
Summary of the invention
The present inventor it has unexpectedly been discovered that, a kind of refrigerant mixture of special ratios has higher compared with R410A refrigerant
Refrigerating capacity, and with R410A refrigerant using a kind of zeotropy refrigerant of identical refrigeration oil, and when the composition replaces R410A
It is constant for refrigerant high-low pressure in the refrigeration system of script contained in refrigeration system when R410A refrigerant.In addition, the combination is also
Have the advantages that other purposes, for example, foaming agent, propellant etc..
Therefore, one aspect of the present invention is about a kind of composition, the difluoromethane for being 70%-75% containing weight percent
(R32) and weight percent be 25%-30% pentafluoroethane (R125), wherein preferably containing weight percent be about 75%
Difluoromethane and weight percent be about 25% pentafluoroethane.
The lubricant is selected from by following composed group: mineral oil, polyoxyethylene alkylphenyl, polyol ester, gathers and stretches silicone
Alkyl diol gathers and stretches alkyl diol ester, polyvinylether, poly- (alpha-olefin).
In a preferred embodiment, the composition further includes at least one selected from the adjuvant by following formed group:
It is additional lubricant, phase solvent, surfactant, additional fire inhibitor, solubilizer, dispersing agent, fire retardant, stabilization agent, polynary
The combination of alcohol, polyalcohol premix component and two or a variety of above-mentioned adjuvants.
Another aspect of the present invention is about a kind of heat transfer compositions comprising such as combinations of the above object of the present invention, and further
Include at least one lubricant.
In a preferred embodiment, which is selected from by following composed group: mineral oil, silicone, poly- alkane
Base benzene (PAB), polyol ester (POE) gather and stretch alkyl diol (PAG), gather and stretch alkyl diol ester (PAG ester), polyvinylether
(PVE), poly- (alpha-olefin) (PAO).
Another aspect of the present invention is about a kind of refrigerant, and it includes above-mentioned heat transfer compositions.
Another aspect of the present invention is about a kind of refrigeration system, and it includes above-mentioned refrigerants.
In a preferred embodiment, the refrigeration system be automotive air-conditioning system, residential air conditioning system, commercial air conditioning system,
Residential refrigerator systems, residential freezer systems, commercial refrigerator systems, commercial freezer systems, frozen water machine air-conditioning system, frozen water machine
Refrigerating and air conditioning system or heat pump system.
The present invention is again about a kind of method for replacing the R410A refrigerant in R410A refrigeration system comprising (1) should
The half weight of contained R410A refrigerant original weight removes in R410A refrigeration system, and adding difluoromethane makes to restore to the original
Starting weight amount；Or (2) directly remove original system R410A completely, directly pour into the refrigerant such as above-mentioned weight ratio；Or (3) are direct
By a weight percent be 25%-30% single refrigerant R125 and a weight percent be 70%-75% single refrigerant R32
Pour into system.
In a preferred embodiment, which is automotive air-conditioning system, residential air conditioning system, commercial air-conditioner
System, residential refrigerator systems, residential freezer systems, commercial refrigerator systems, commercial freezer systems, frozen water machine air-conditioning system,
Frozen water machine refrigerating and air conditioning system or heat pump system.
Definition
Term used in the description is generally in technical field, the context of the invention and in description of the invention in text
The meaning for having its common according to the use of each term.Some terms are used to the present invention is described in detail will be discussed below, or specification is in saying
The bright other places of book are to provide practitioner's instruction additional with regard to summary of the invention.For convenience, certain terms can with such as italic or
The mode of quotation marks is emphasized, and this emphasizes do not have any influence for the range and meaning of term；In identical interior text, regardless of whether
It emphasizes, the range and meaning of term are identical.It is understood that different sayings can be used in same thing, it therefore, can
Term discussed herein any one or more is indicated using substitution language and synonym, and no matter term is set forth or begs for herein
By being placed in all not special meaning in where.Certain terms be provided with synonym but one or more synonyms for enumerating simultaneously
It is not excluded for the use of other synonyms.In the example of present invention explanation Anywhere, the example comprising predicate discussed herein is only used
In explanation rather than there are any restrictions for the scope of the invention and meaning or any exemplified term.In the same manner, the present invention is not limited to
The various examples that specification provides.
Unless otherwise defined, all technologies and scientific term in this and usual skill in the technical field of the invention
To be generally understood meaning identical.If but having conflict, this specification of being subject to defines.
Herein " R410A " refer to be a kind of difluoromethane (R32) by 50 weight % and 50 weight % pentafluoroethane (R-
125) near-azeotrope refrigerant mixed.
" R125 " refers to that pentafluoroethane, molecular weight 120.02, destroy ozone layer latent energy value (ODP) by -48.65 DEG C of boiling point herein
It is 0, global warming coefficient value (GWP) is 0.84, can be used as refrigerant, is constituent important in all polyhybird refrigerants.
" R32 " refers to difluoromethane herein, chemical formula CH2F2, molecular weight 52.02, -51.7 DEG C of boiling point, colorless and transparent liquefaction
Gas, it is not soluble in water, it is dissolved in ethyl alcohol, destroying ozone layer latent energy value (ODP) is 0.
Herein " refrigeration system " refer generally to using refrigerant with any system or device that provide cooling effect or this system or
Any portion of device.These cooling systems include, such as air-conditioning, refrigerator, frozen water machine, transport refrigeration systems, commercial freezer system
System etc..
" about (around) ", " about (about) " or " intimate (approximately) " generally means given herein
5%, preferably the 2% of value or range, within more preferably 1%.Numerical value herein is approximation, that is to say, that even if not bright
True explanation, also deducibility has the meaning of so-called " about (around) ", " about (about) " or " intimate (approximately) "
Justice.
Herein, if addressing a numerical value or range, those skilled in the art should be understood that its representative is covered and be relevant to this hair
The suitable and reasonable range of bright middle specific area.
Specific embodiment
The terms " one " or "an" are used in conjunction in claims or specification when with "comprising", may represent
There is one, but " one or more " or "at least one" can also be represented.
The present composition is suitable for heat-transfer fluid
The present composition is applicable to heat transfer applications, that is, composition can be used as heating and/or cooling medium.One compared with
In good embodiment, the composition includes the difluoromethane (R32) that weight percent is 70%-75% and weight percent is
The pentafluoroethane (R125) of 20%-25%, wherein preferably 75% difluoromethane and 25% pentafluoroethane.
The present composition is suitable for a variety of heat transfer applications as heat-transfer fluid, and all this applications come under the present invention
Range.The present composition using upper, obtains special benefit and unexpected advantageous property as heat-transfer fluid.
In certain preferred embodiments, the present composition be can be used originally through designing using the cold of R410A refrigerant
In jelly system.Preferred compositional of the present invention is tended to the characteristic being preferred compared with R410A refrigerant comprising due to the valence of R410A
Lattice are compared with R32 high, and R32 proportion is more compared with the R32 in R410 in preferred compositional of the present invention, thus price it is cheap compared with R410A,
These compositions also have higher cold-room ability, in addition, when replacing the refrigeration system of original R410A refrigerant with the present composition,
High-low pressure in refrigeration system is constant, therefore does not need the R410A refrigeration system of modification script, can directly replace R410A air-conditioning
System, comprising frequency, frequency conversion, combined air conditioners etc. calmly, and when this composition of use, the current strength of compressor reduces, and can extend pressure
The service life of contracting machine.Therefore, the present composition is it is further preferred that can be used as the substitute or substituent of R410.Although in addition, the efficiency of R32
It is higher but more inflammable, therefore flammability can be slowed down by mixing with R125.
In some preferred embodiments, the present composition (is especially in the composition of heat-transfer fluid form, especially
In the composition of refrigerant form) further include lubricant.Any one of various known and non-known lubricants all can be used
In the present composition.The critical function of lubricant is when it is used in refrigeration system, it is necessary to have enough lubricants to return
The compressor of the system is returned, to cause the compressor essence to lubricate.Therefore, the lubricant applicability of any particular system can part by
It is determined by the refrigerant/lubricant characteristics and part is determined by plan using the system performance of the lubricant.Suitable lubricant
Example is usually the lubricant that these are generally used in the refrigerator for using R410A refrigerant using or through design comprising but
It is not limited to mineral oil, silicone, polyoxyethylene alkylphenyl (PAB), polyol ester (POE), gathers and stretches alkyl diol (PAG), gathers and stretch alkyl
Diol ester (PAG ester), polyvinylether (PVE), poly- (alpha-olefin) (PAO) and halocarbon oil etc..Mineral oil (its right side include paraffin oil or
Naphthene series oil etc.), it can be in buying on the market.It (is especially just pressed comprising freezing for using and being designed as using the refrigeration system of HFC
For contracting, air-conditioning (especially air conditioning for automobiles) and the system of heat pump), usually preferably use PAG, PAG ester, PVE and POE as profit
Lubrication prescription.For using or being designed to use R410A refrigeration system, usually preferably use POE oil as lubricant.Certain
In preferred embodiment, the lubricating oil that the present invention further includes is to synthesize polyalcohol esters refrigeration oil (POE).
The present composition is in commercial air-conditioner and refrigeration system with also being had the advantage that (in original system in frozen water machine
Or as the refrigerant substituent for such as R410A etc.).In certain preferred embodiments, the present composition preferably includes
Additional combustion inhibitor.
Therefore the present composition is applicable to automotive air-conditioning system and device, commercial freezer systems and device, frozen water machine
(it is including the use of centrifugal compressor system), home refrigerators and refrigerator, general air-conditioning system, heat pump etc..
Although in text and being not explicitly stated any additional ingredients (for example, stabilization agent, passivator etc.), it is familiar with this skill
Person, which knows, can add in these additional ingredients to the composition so that these substances are suitble to need.
The alternative of refrigerant in system and original system containing the present composition
Another aspect of the present invention includes object being diverted heat to using heat-transfer fluid according to the present invention or from object heat of transfer
System.It is familiar with this those skilled in the art understanding to teach according in text, many known methods are all applicable in the present invention, and all these methods are all
Belong to its broad spectrum.For example, vapor-compression cycle is freezing and/or the universal application method of air-conditioning.The vapor-compression cycle
Simplest form includes the heat-transfer fluid of the present invention provided in liquid pattern, and usually by absorbing heat that this is cold at a fairly low pressure
Matchmaker converts liquid phase into the gas phase, then usually under high pressure by reducing phlegm and internal heat the refrigerant from the gas phase transition into liquid phase.At this
In a little specific embodiments, when the present composition is as refrigerant, one or more containers (for example, evaporator, directly or indirectly with
This is intended to cooling object contact) in gasification.Pressure in the evaporator can cause the heat-transfer fluid in the desire cooled material body temperature
It spends at temperature below and gasifies.Therefore, heat can flow to refrigerant from the object, and the refrigerant is caused to gasify.Then preferably by
It is in the heat-transfer fluid of gas pattern by removals such as compressors, which can maintain suitable low pressure in evaporator at once, and
By steam compressed to the quite high pressure.Due to increasing mechanical energy by the compressor, so the steam temperature usually also increases
Add.Then so that the high pressure steam is transferred to one or more containers (preferably condenser), then generate heat with lower temperature medium and hand over
It changes, removes the sensitivity latent heat, to generate subsequent condensation reaction.Then making the liquid coolant, (it can be optionally further through cold
But it) is transferred to the expansion valve, and can be recycled at any time.
When the present invention substitutes the R410A in script R410A system with the present composition, which is directly to substitute
Step redesigns the system and does not need replacement dominant term purpose equipment, that is, is suitable for the present invention with not needing big degree
Refrigerant.In certain preferred embodiments, these methods it include removing at least partly R410A from the air-conditioning or refrigeration system
Refrigerant, and meet the present invention by R32 refrigerant is imported allotment ratio refrigerant ratio into the refrigeration system in the air-conditioning system
Composition, or remove whole R410A refrigerant and by by liquid R410A (composition be weight percentage for 50% R125 and
50% R32) the single R32 of cooperation is deployed into and meets the refrigerant of ratio of the present invention and import in the air-conditioning system, and it also can directly will be single
One refrigerant R125 and single refrigerant R32 is by coolant reclaiming machine (Appion G5Twin Cylinder Refrigerant
Recovery Unit) according to quantitatively being filled after percentage of weight of the present invention sucking electronic scale (TIF9055) confirmation, reach of the present invention group
Close object.
Or in another embodiment, directly the R410A in former air-conditioning system can be removed, and pour into refrigerant composition of the present invention
?.
Certainly, one embodiment of the invention also includes a refrigeration system, containing composition of the invention as refrigerant.
The present composition is suitable for propellant and aerosol composition
In another embodiment, the present composition can be used as the propellant of sprayable composition.It is intended to and inert component, molten
The active ingredient that agent and other materials are sprayed together also may be present in the sprayable mixture.The sprayable composition is preferable
For aerosol.The suitable actives to be sprayed include but is not limited to cosmetic substance (for example, deodorant, fragrance, spraying hair
Glue and detergent) and polishing agent and medical substances and/or bioactive substance.
In other specific embodiments, the present invention provides foamable composite and the method for preparing foaming body.The present invention this
A little foamable composites, which generally include one or more, can form with the foaming body component for being usually in vesicular structure, and according to this
The foaming agent of invention.
Embodiment
Following instance further illustrates that the present invention, these examples are only to illustrate and technical field personage made to understand the present invention
Means are not intended to limit the invention.
Embodiment one
Model: Mitsubishi MXZ-4A71NA, three indoor units of arranging in pairs or groups, 35 DEG C of outside air temperature when test.Change before and after machine temperature and
Current data is as shown in table 1 below.
Nameplate: refrigerant/loading R410A/2.7kg
Specified cold air ability 7.1kw
Estimate refrigerant magnitude of recruitment 0.3kg
Revolution electric current 13.82A
1 Φ 220V of voltage rating
Table 1
Change machine mode: the coolant charging-up amount 2.7Kg that nameplate is indicated is added and is estimated the total 3Kg system of refrigerant magnitude of recruitment 0.3Kg
Coolant quantity, will using coolant reclaiming machine (Appion G5Twin cylinder Refrigerant recovery unit)
R410A refrigerant is recycled with liquid, 50% (weight) about 1.5Kg of recovery total, is confirmed through refrigerant electronic scale (TIF-9055), then
Single refrigerant R32 is poured into system about 1.5Kg through electronic scale, and is confirmed through refrigerant electronic scale, operating was tested and remembered after one hour
Record changes numerical value table 1 as above after machine.
Conclusion: compared to original R410A system, it is total to power saving 14% using present composition refrigerant, cold-room ability mentions
33% is risen, and air outlet temperature reduces after changing machine, there is more preferably cold-room effect.
Embodiment two
Model: Hitachi RAM-108NA, two indoor units of arranging in pairs or groups 37 DEG C of outside air temperature when test, change temperature and electricity before and after machine
Flow data is as shown in table 2 below.
Nameplate: refrigerant/loading: R410A/2.5kg
Specified cold air ability: 3.73kw
Revolution electric current: 17.1A
Voltage rating: 1 Φ 220V
Table 2
Change machine mode: because of cold medium shortage so can not judge refrigerant total amount, therefore temporarily on the basis of the 2.5Kg shown in the nameplate,
The total 1.2Kg of R410A is recycled with coolant reclaiming machine liquid, and is confirmed with electronic scale, then by the single refrigerant R32 of 1.2Kg through electronics
Scale pours into system, changes to operate after machine and measures and records within one hour it and change every numerical value after machine, table 2 as above.
Conclusion: compared to original R410A system, power saving 13.2%, cold-room ability are total to using present composition refrigerant
43% is promoted, and air outlet temperature reduces after changing machine, there is more preferably cold-room effect.
Embodiment three
Model: the multi-joint 410A system of great Jin DAIKIN VRVIII INVERTER RXYQ10PAYU, eight interiors of arranging in pairs or groups
Machine, changes machine front and back temperature and current data is as shown in table 3 below.
Nameplate: refrigerant/loading: R410A/7.9kg
Voltage rating: 3 Φ 380V
Specified cold air ability: 7.9kw
Table 3
Change machine mode: the coolant charging-up amount 7.9Kg indicated according to nameplate (is supplemented plus refrigerant magnitude of recruitment 2.1Kg is estimated
Amount converts according to practice of construction copper pipe), total amount 10Kg recycles the total 5Kg of R410A with coolant reclaiming machine liquid, and true through electronic scale
Recognize errorless, the single refrigerant R32 of 5Kg is poured into system through electronic scale, operating is tested after one hour and records items as a result, table as above
2。
Conclusion: compared to original R410A system, according to this case ratio change after machine can power saving 24.4%, can using electric current
12.5% is reduced, cold-room ability can be improved 33%, and POE oil identical with R410A can be used, and high-low pressure is constant.
Example IV and comparative example 1
Type: Hitachi frequency conversion cold air RAC-45JW, 1 Φ 220V, 33 DEG C of outside air temperature when test.
Nameplate: 1.4kw~6kw
Revolution electric current: 1.5~8.4A
Refrigerant/loading: R410A/1.25kg
Change machine mode:
Comparative example 1: former R410A system refrigerant recovering to vacuum, then R410 is poured into 0.4625Kg (1.25Kg* (18.5%
+ 18.5%)), then refrigerant weight is refilled to script weight 1.25Kg with R32 again, becomes the ratio of R125 and R32
18.5% and 81.5%.
Embodiment 4: former R410A system refrigerant recovering to vacuum, then the interior R410 containing 25% original weight amount R125 is poured into
(shared 25%R125 and 25%R32), refrigerant weight is then refilled to script weight 1.25Kg with R32, make R125 and R32 again
Ratio become 25% and 75%.It is tested one hour after changing machine and records every result.
As seen from the above-described embodiment, when the refrigerant in the R410A system of script is replaced into the combination of special ratios of the present invention
When object, not only displacement front and back system high-low pressure is constant, and after changing machine with the present composition, and the electric current of compressor reduces, and can prolong
Long compressor service life and more power saving, have effects that it is not expected, be special ratios selection invent.In addition, this case and original
The same refrigeration oil of this R410A refrigerant use (POE oil), without adjusting.Therefore the hybrid refrigerant of the present composition is true
It can be used as replacing the refrigerant in single R410A coolant system, and have more preferably effect.
Claims (2)
1. a kind of method for replacing the R410A refrigerant in R410A refrigeration system, which is characterized in that (1) by R410A refrigeration system
In the half weight of contained R410A refrigerant original weight remove, adding difluoromethane makes to restore to the original weight；Or (2)
Directly original system R410A is removed completely, a refrigerant for being allocated as composition is directly poured into, contains weight hundred in the composition
Divide the difluoromethane that ratio is 70%-75% and the pentafluoroethane that weight percent is 25%-30%；Or (3) directly by a weight
The single refrigerant R32 that the single refrigerant R125 and a weight percent that percentage is 25%-30% are 70%-75%, which is poured into, is
System.
2. replacing the method for the R410A refrigerant in R410A refrigeration system as described in claim 1, which is characterized in that should
R410A refrigeration system is automotive air-conditioning system, residential air conditioning system, commercial air conditioning system, residential refrigerator systems, residential freezer
System, commercial refrigerator systems, commercial freezer systems, frozen water machine air-conditioning system, frozen water machine refrigerating and air conditioning system or heat pump system.
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| CN201410414307.6A CN105349105B (en) | 2014-08-21 | 2014-08-21 | Refrigerant composition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410414307.6A CN105349105B (en) | 2014-08-21 | 2014-08-21 | Refrigerant composition |
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| CN105349105B true CN105349105B (en) | 2019-03-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20190203093A1 (en) | 2017-12-29 | 2019-07-04 | Trane International Inc. | Lower gwp refrigerant compositions |
| US20210292626A1 (en) * | 2018-08-09 | 2021-09-23 | Daikin Industries, Ltd. | Composition containing refrigerant, freezing method using said composition, operating method of refrigerator, and refrigerator |
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|---|---|---|---|---|
| US4978467A (en) * | 1989-09-26 | 1990-12-18 | Allied-Signal Inc. | Azeotrope-like compositions of pentafluoroethane and difluoromethane |
| WO1992011338A1 (en) * | 1990-12-17 | 1992-07-09 | E.I. Du Pont De Nemours And Company | Constant boiling compositions of fluorinated hydrocarbons |
| CN1174315A (en) * | 1994-11-29 | 1998-02-25 | 三洋电机株式会社 | Refrigerating cycle |
| CN102161881A (en) * | 2008-12-08 | 2011-08-24 | 于淑芳 | Ternary mixed refrigeration agent composition |
-
2014
- 2014-08-21 CN CN201410414307.6A patent/CN105349105B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978467A (en) * | 1989-09-26 | 1990-12-18 | Allied-Signal Inc. | Azeotrope-like compositions of pentafluoroethane and difluoromethane |
| WO1992011338A1 (en) * | 1990-12-17 | 1992-07-09 | E.I. Du Pont De Nemours And Company | Constant boiling compositions of fluorinated hydrocarbons |
| CN1174315A (en) * | 1994-11-29 | 1998-02-25 | 三洋电机株式会社 | Refrigerating cycle |
| CN102161881A (en) * | 2008-12-08 | 2011-08-24 | 于淑芳 | Ternary mixed refrigeration agent composition |
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