CN102859199B - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- CN102859199B CN102859199B CN201180021069.7A CN201180021069A CN102859199B CN 102859199 B CN102859199 B CN 102859199B CN 201180021069 A CN201180021069 A CN 201180021069A CN 102859199 B CN102859199 B CN 102859199B
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- rotary compressor
- duty cryogen
- cryogen
- exhaust silencer
- duty
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- 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
- F04C29/06—Silencing
- F04C29/065—Noise dampening volumes, e.g. muffler chambers
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- 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
- F04C29/06—Silencing
- F04C29/068—Silencing the silencing means being arranged inside the pump housing
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- 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
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/32—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members
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- 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
- F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
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- 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
- F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
- F04C2210/263—HFO1234YF
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Rotary compressor of the present invention, the unitary system cryogen of the HF hydrocarbon of double bond will be had between carbon and carbon, or at least must contain the HF hydrocarbon between carbon and carbon with double bond and enclose with the duty cryogen that the hydrogen fluorohydrocarbon without double bond mixes, compression mechanical part (3) comprising: make above-mentioned duty cryogen become the pressing chamber of high pressure (39); By the exhaust port (38) that the above-mentioned duty cryogen being become high pressure by above-mentioned pressing chamber is discharged; With the exhaust silencer (37) covering above-mentioned exhaust port, the spatial volume of above-mentioned exhaust silencer is set according to the density of above-mentioned duty cryogen, reliably can reduce the pressure loss increased with work refrigerant flow, and prevent the rising of discharge temperature, suppress the decomposition of duty cryogen.
Description
Technical field
The present invention relates to by using not chloride atom and the rotary compressor assembled in the refrigeration cycle of the room air conditioner, refrigerator, other air attemperation apparatus etc. of duty cryogen of the lower refrigeration agent between carbon and carbon with the HF hydrocarbon of double bond of global warming coefficient (greenhouse effects of the earth coefficient).
Background technique
In existing refrigeration plant, as the direct transform of duty cryogen to be depletion of the ozone layer coefficient be 0 HFC(hydrogen fluorohydrocarbon) class, but becoming problem in recent years because the global warming coefficient of this HFC class refrigeration agent is very high on the other hand.So, consider based on not chloride atom and the lower refrigeration plant between carbon and carbon with the refrigeration agent of the HF hydrocarbon of double bond of global warming coefficient.
Therefore, in refrigeration plant etc., use the duty cryogen sucked by evaporator evaporation, compressed the pressure most required for condensation, in refrigerant circuit, carry the rotary compressor of the duty cryogen of High Temperature High Pressure.Because the major part of the power of refrigeration plant is used by compressor, so the performance of compressor affects the performance of refrigeration plant significantly.In order to improve the performance of the rotary compressor using existing HFC class refrigeration agent, the situation for the HFC410A being used as representational duty cryogen carries out the design of optimum shape.
As the one of such rotary compressor, there will be a known rotary compressor (rotarycompressor) (such as with reference to patent documentation 1).Rotary compressor such as shown in Figure 9, motor 101 and compression mechanical part 102 are linked with axle 103 and be accommodated in seal container 100, motor 101 is formed by rotor 104 and stator 105, is vertically disposed with along vertical direction vibration at rotor to reduce the counterweight 106 for the purpose of noise.Utilizing axle 103 to link rotor 104 and compression mechanical part 102, by electronically making rotor 104 rotate, making compressing mechanism work.
Compression mechanical part 102 comprises: cylinder 107; The pressing chamber 110 formed by upper head plate 108 and the lower end sheet 109 of the both ends of the surface of this cylinder 107 closed; The roller 111 chimeric with the eccentric part of axle 103 supported by upper head plate 108 and lower end sheet 109 in this pressing chamber; And to abut the eccentric rotary to-and-fro motion of following roller 111 with the periphery of this roller 111 and the blade 112 of low voltage section and high-voltage section will be divided in pressing chamber.
The suction port 114 of the low voltage section suction duty cryogen in oriented pressing chamber is opened at cylinder 107, open at upper head plate 108 exhaust port (not shown) that the high-voltage section formed from the low voltage section conversion indoor from compression discharges duty cryogen, roller 111 is accommodated in the pressing chamber 110 formed from upper and lower closed cylinder by upper head plate 108, lower end sheet 109.The expulsion valve (not shown) opened when being subject to the pressure of more than prescribed level is provided with at the upper surface of exhaust port (not shown).And the mode covering expulsion valve upper surface is provided with exhaust silencer 117.
In the rotary compressor of said structure, in low voltage section side, the sliding contacting part of roller 111 by suction port 114 limit expand gradually suction chamber outlying from, in suction chamber, suck duty cryogen from suction port 114.On the other hand, in high-voltage section side, it is close that the sliding contacting part of roller 111 reduces pressing chamber 110 limit gradually to exhaust port (not shown) limit, opens at the moment expulsion valve (not shown) being compressed to more than authorized pressure, discharges duty cryogen from exhaust port (not shown).The duty cryogen of this discharge is discharged into confined space via the space formed by exhaust silencer and upper head plate.
Look-ahead technique document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2008-303887 publication
Summary of the invention
The problem that invention will solve
But, in the rotary compressor of said structure, when using not chloride atom and the lower refrigeration agent between carbon and carbon with the HF hydrocarbon of double bond of global warming coefficient as duty cryogen, suction work refrigerant density reduction compared with the HFC410A of the representative duty cryogen as existing HFC class refrigeration agent of above-mentioned duty cryogen.Therefore, when using the compressor using existing HFC410A as duty cryogen, need to increase this duty cryogen, result is with the increase of flow, and the volume of existing exhaust silencer is not enough.In addition, because flow is many, the flowing difference build-up of pressure loss of refrigeration agent, causes the efficiency of compressor to reduce.In addition, when refrigeration agent is detained in exhaust silencer, causes overcompression, reexpand, suck being heated of duty cryogen, the main cause that the duty refrigerant temperature becoming discharge excessively rises.Based on not chloride atom and the refrigeration agent between carbon and carbon with the HF hydrocarbon of double bond holds labile characteristic, so become fatal problem by the rising of overcompression, the discharge temperature caused that reexpands under having high temperature.
The present invention completes in view of the above-mentioned problems in the prior art, its object is to provide reliably to reduce the pressure loss, high efficiency and the outstanding rotary compressor of reliability, durability.
For solving the method for problem
To achieve these goals, rotary compressor of the present invention, the spatial volume of exhaust silencer sets according to the density of duty cryogen.
The outstanding high efficiency rotary compressor of the pressure loss, reliability, durability reliably can be reduced thereby, it is possible to provide.
Invention effect
Rotary compressor of the present invention, by arranging exhaust silencer according to suction work refrigerant density, even if use the lower duty cryogen of global warming coefficient also can suppress by refrigeration agent decompose cause reliability, durability reduction and guarantee suitable exhaust silencer spatial area, so reliably the pressure loss can be reduced, thus high reliability can be provided and high efficiency rotary compressor.
Accompanying drawing explanation
Fig. 1 is the longitudinal section of the rotary compressor of embodiments of the present invention 1.
Fig. 2 is the cross-sectional view in the exhaust silencer portion of mode of execution 1.
Fig. 3 is the longitudinal section in the exhaust silencer portion of mode of execution 1.
Fig. 4 be compare in certain operating range of compressor, make condensation, saturation temperature and R410A equal condition under the chart of suction refrigerant density of various duty cryogen.
Fig. 5 is the performance plot representing the global warming coefficient (GWP) determined by the ratio of mixture of tetrafluoeopropene and these 2 kinds of mixed refrigeration agents of composition of difluoromethane.
Fig. 6 is the longitudinal section in the exhaust silencer portion of embodiments of the present invention 2.
Fig. 7 is the cross-sectional view in the exhaust silencer portion of embodiments of the present invention 3.
Fig. 8 is the longitudinal section of the compression mechanical part of embodiments of the present invention 4.
Fig. 9 is the longitudinal section of existing rotary compressor.
Embodiment
The rotary compressor of a first aspect of the present invention, the unitary system cryogen of the HF hydrocarbon of double bond will be had between carbon and carbon, or at least contain the HF hydrocarbon between carbon and carbon with double bond and enclose with the duty cryogen that the hydrogen fluorohydrocarbon without double bond mixes, compression mechanical part comprises: the suction port sucking above-mentioned duty cryogen; The above-mentioned duty cryogen sucked from above-mentioned suction port is made to become the pressing chamber of high pressure; By the exhaust port that the above-mentioned duty cryogen being become high pressure by above-mentioned pressing chamber is discharged; With the exhaust silencer covering above-mentioned exhaust port, wherein the spatial volume of above-mentioned exhaust silencer sets according to the density of above-mentioned duty cryogen, the pressure loss that reliably can reduce and increase with work refrigerant flow can be provided thus, and prevent the rising of discharge temperature, suppress because of duty cryogen decompose cause reliability, durability reduce rotary compressor.
The rotary compressor of a second aspect of the present invention, particularly the above-mentioned exhaust silencer of first aspect is arranged at least in formation space, above-mentioned exhaust port top, collide, so noise can be provided low and lose few rotary compressor owing to avoiding duty cryogen and exhaust silencer under firm flow velocity after exhaust port discharge faster state.
The rotary compressor of a third aspect of the present invention, particularly the above-mentioned exhaust silencer of first ~ second aspect becomes the shape that the axis of above-mentioned axle is long limit, the spatial volume of exhaust silencer can be guaranteed at the flow direction of the duty cryogen of discharging from exhaust port, so can the pressure loss be reduced, and discharge duty cryogen to the space away from pressing chamber, so reduce to sucking being heated of duty cryogen, higher reliability and efficient activity can be realized.
The rotary compressor of a fourth aspect of the present invention, particularly the above-mentioned exhaust silencer of first ~ third aspect is the shape of not installation space volume around above-mentioned suction port, because the duty cryogen in suction port high ambient temperatures can not be detained, so can reduce efficiently to sucking being heated of duty cryogen, the excessive rising of discharge temperature can be prevented.Therefore, due to the decomposition of duty cryogen can be reduced, so the rotary compressor that reliability is higher can be provided.
The rotary compressor of a fifth aspect of the present invention, particularly the above-mentioned exhaust silencer of first ~ fourth aspect is arranged at the side contrary with above-mentioned motor across above-mentioned press part, being heated of the heating part produced from the rotation because of motor that can reduce duty cryogen can be provided, and easily design and the rotary compressor of high reliability because of the space of easily guaranteeing to arrange exhaust silencer.In addition, be surrounded entirely by oil around exhaust silencer, so can also low noise be realized.
The rotary compressor of a sixth aspect of the present invention, particularly the above-mentioned exhaust silencer of the first ~ five aspect is provided with multiple, although the spatial volume of exhaust silencer can not be guaranteed at 1 position, but by arranging dispersedly at multiple position, can provide and improve design freedom, the small-sized and rotary compressor of high reliability.
The rotary compressor of a seventh aspect of the present invention, compared with the situation particularly using R410A with duty cryogen, the spatial volume of the exhaust silencer of the first ~ six aspect is extended to 1.01 ~ 1.7 times, reliably can provides high reliability and high efficiency rotary compressor.
The rotary compressor of a eighth aspect of the present invention, it is particularly the unitary system cryogen of tetrafluoeopropene or trifluoro propene by HF hydrocarbon, or with tetrafluoeopropene or trifluoro propene for primary coil using make global warming coefficient be less than more than 5 750 mode carry out mix refrigerant that 2 composition mixing or 3 compositions the mix duty cryogen as the first ~ seven aspect respectively, so can provide that conditioning is little, high reliability and high efficiency rotary compressor.
The rotary compressor of a ninth aspect of the present invention, particularly by HF hydrocarbon with tetrafluoeopropene or trifluoro propene for primary coil and using make global warming coefficient be less than more than 5 750 mode 2 compositions or 3 compositions are mixed with the duty cryogen of mix refrigerant as first ~ eighth aspect of difluoromethane and pentafluoroethane respectively, due to conditioning can be reduced, and suppresses flow velocity, reduce discharge temperature, so can provide high reliability and high efficiency rotary compressor.
The rotary compressor of a tenth aspect of the present invention, in particularly in the 8th or the 9th, is set to and makes global warming coefficient be less than 350.
The rotary compressor of a eleventh aspect of the present invention, particularly as the refrigerator oil that the duty cryogen of first ~ eighth aspect uses, using with polyoxyalkylene glycol class, glymes, the copolymer gathering sub-(oxygen) alkyl glycol or its monoether and polyvinylether, polyol ester class and polycarbonate-based oxygenatedchemicals is the artificial oil of primary coil, or with the artificial oil that alkyl benzene or α paraffin class are primary coil, can high reliability be provided and high efficiency rotary compressor.
The rotary compressor of a twelveth aspect of the present invention, particularly make the HF hydrocarbon of the first ~ the 11 aspect for tetrafluoeopropene (HFO1234yf), hydrogen fluorohydrocarbon is that the mix refrigerant of difluoromethane (HFC32) is as duty cryogen, the proportions of ingredients of above-mentioned mix refrigerant is the tetrafluoeopropene (HFO1234yf) of 80%, the difluoromethane as hydrogen fluorohydrocarbon (HFC32) of 20%, compared with the situation using R410A with duty cryogen, the spatial volume of above-mentioned exhaust silencer is extended to 1.01 ~ 1.4 times, can provide thus and meet below GWP150, reduce conditioning, high reliability and high efficiency rotary compressor.
The rotary compressor of a thirteenth aspect of the present invention, particularly make the HF hydrocarbon of the first ~ the 11 aspect for tetrafluoeopropene (HFO1234yf), hydrogen fluorohydrocarbon is that the mix refrigerant of difluoromethane (HFC32) is as duty cryogen, the proportions of ingredients of above-mentioned mix refrigerant is the tetrafluoeopropene (HFO1234yf) of 60%, the difluoromethane as hydrogen fluorohydrocarbon (HFC32) of 40%, compared with the situation using R410A with duty cryogen, the spatial volume of above-mentioned exhaust silencer is extended to 1.01 ~ 12 times, can provide thus and can guarantee as the annual efficiency of power dissipation of air conditioner and the equal performance of HFC410A, and conditioning is suppressed less, high reliability and high efficiency rotary compressor.
Below, with reference to accompanying drawing, embodiments of the present invention are described.But, and can't help present embodiment and limit the present invention.
(mode of execution 1)
Fig. 1 is the longitudinal section of the hermetic type compressor of mode of execution 1.In FIG, motor 2 and compression mechanical part 3 link with axle 31 and are accommodated in seal container 1 by rotary compressor, and compression mechanical part 3 comprises: cylinder 30; The pressing chamber 39 formed by upper head plate 34 and the lower end sheet 35 of the both ends of the surface of this cylinder 30 closed; The roller 32 chimeric with the eccentric part 31a of axle 31 supported by upper head plate 34 and lower end sheet 35 in this pressing chamber 39; And to abut the eccentric rotary to-and-fro motion of following roller 32 with the periphery of this roller 32 and the blade 33 of low voltage section and high-voltage section will be divided in pressing chamber 39.
The suction port 40 of the low voltage section suction duty cryogen in oriented pressing chamber 39 is opened at cylinder 30, open at upper head plate 34 exhaust port 38 that the high-voltage section formed from the low voltage section conversion in pressing chamber 39 discharges duty cryogen, roller 32 is accommodated in the pressing chamber 39 formed from upper and lower closed cylinder 30 by upper head plate 34, lower end sheet 35.Exhaust port 38 is formed as the hole of through upper head plate 34, is provided with the expulsion valve 36 opened when being subject to the pressure of more than prescribed level at the upper surface of exhaust port 38.And the mode covering this expulsion valve 36 is provided with exhaust silencer 37.
For the rotary compressor formed as mentioned above, its action and effect are below described.In low voltage section side, the sliding contacting part of roller 32 by suction port 40 limit expand gradually suction chamber outlying from, in suction chamber, suck duty cryogen from suction port 40.On the other hand, in high-voltage section side, it is close that the sliding contacting part of roller 32 reduces pressing chamber 39 limit gradually to exhaust port 38 limit, open at the moment expulsion valve 36 being compressed to more than authorized pressure, discharge duty cryogen from exhaust port 38, be discharged in seal container 1 from exhaust silencer 37, by the air gap 26 of the notch part 28 that formed by stator 22 and seal container 1 inwall and motor 2, be delivered to upper shell 5 space on the top of motor 2, be discharged to seal container 1 from refrigerant discharge leader 51.Arrow represents the flowing of refrigeration agent.
Here, in this rotary compressor, be used in the unitary system cryogen of the HF hydrocarbon between carbon and carbon with double bond, or at least must containing there is the HF hydrocarbon of double bond between carbon and carbon and the mix refrigerant mixed with the hydrogen fluorohydrocarbon without double bond as duty cryogen.
Fig. 2 is the cross-sectional view of the exhaust silencer 37 seen from upper head plate 34 of present embodiment 1, and Fig. 3 is the longitudinal section of this exhaust silencer 37.
As shown in Figure 2 and Figure 3, the spatial volume of exhaust silencer 37 is the oblique line portion covered by upper head plate 34 and exhaust silencer 37.The density of the suction duty cryogen that this spatial volume is used according to the invention relative to the density of the duty cryogen used by compressor as benchmark change and set.
That is, if the suction work refrigerant density used by compressor as benchmark is A, the suction work refrigerant density of setting the present invention to use on the other hand is as B.When the work of suction refrigerant density B is less than A, compared with the work refrigerant flow used by benchmark, the flow of refrigerant of about A/B flow doubly in the refrigeration agent that the present invention uses.Therefore, if exhaust silencer 37 is set as spatial volume same as the prior art, then because refrigerant flow is too much, so the duty cryogen of discharging from exhaust port 38 can not be allowed within the spatial volume of exhaust silencer 37.Therefore, causing can not the smooth and easy loss carried out to the release in seal container space from exhaust silencer 37.In addition, owing to also easily producing the adverse current to exhaust port 38, so easily there is overcompression, reexpand.Therefore, the temperature of refrigeration agent rises, and causes the development as the decomposition under the high temperature of this kind of peculiar problem of refrigeration agent.
According to as mentioned above, when the duty cryogen adopting the present invention to use, the spatial volume of the exhaust silencer 37 of the rotary compressor according to existing duty refrigerant design is changed according to suction work refrigerant density.The concrete example that the spatial area of this exhaust silencer 37 sets is described.
Fig. 4 is the chart of the suction refrigerant density of various duty cryogen under the condition making condensation, saturation temperature and R410A equal in certain operating range of compressor comparing present embodiment 1.Dotted line shown in Fig. 4 is with suction refrigerant density during proportions of ingredients 5:5 mixing HFO1234yf and R32.When using with the refrigeration agent of various ratio mixing HFO1234yf and R32, also calculate the suction refrigerant density determined by this proportions of ingredients.
As shown in Figure 4, when the duty cryogen HFO1234yf that situation and use the present invention of the duty cryogen HFC410A using prior art to use use, the suction duty cryogen density ratio under the same terms is HFO1234yf:HFC410A ≈ 1:1.7.Therefore, when using HFO1234yf as duty cryogen, the flow of refrigerant of flow of roughly 1.7 times compared with HFC410A.
Therefore, if do not set by exhaust silencer 37 larger than the spatial volume that designs when using HFC410A, then spatial volume is too small and produce the pressure loss.In addition, if spatial volume is set as more than necessity, then can increase seal container 1 itself and cannot be compact to design rotary compressor.Therefore, when the spatial volume of the exhaust silencer 37 when to use HFC410A is for benchmark, when using HFO1234yf, be formed with the spatial volume of exhaust silencer 37 in the mode being extended to about 1.01 ~ 1.7 compared with using the situation of HFC410A.Thus, also can provide when using HFO1234yf reduce loss, suppress the decomposition of refrigeration agent, compact high efficiency and the rotary compressor of high reliability.
Fig. 5 is the performance plot representing the global warming coefficient (GWP) determined by the ratio of mixture of tetrafluoeopropene and these 2 kinds of mixed refrigeration agents of composition of difluoromethane.Be the value that GWP4 represents extremely good when being tetrafluoeopropene unitary system cryogen making refrigeration agent.But, owing to comparing the refrigerating capacity step-down because of specific volume larger grade with the refrigeration agent that hydrogen fluorohydrocarbon mixes, so need larger cooling-cycle device.In other words, if use using the HF hydrocarbon between carbon and carbon with double bond as basis and be mixed with the refrigeration agent of the hydrogen fluorohydrocarbon without double bond, then compared with use HF hydrocarbon unitary system cryogen, the characteristic of the regulations such as refrigerating capacity can be improved, can easily use as refrigeration agent.Therefore, in the refrigeration agent enclosed, it is how many for comprising unitary system cryogen in the interior ratio of tetrafluoeopropene of setting, and suitably selects according to conditions such as being assembled with the object of cooling-cycle device etc. of compressor and the restriction of above-mentioned GWP.
Specifically, as shown in Figure 5, mixing tetrafluoeopropene and difluoromethane, in order to make GWP be less than 150, being set to below 20wt% by difluoromethane, in order to make GWP be less than 300, difluoromethane being set to below 40wt% and mixing.That is, can meet below GWP150 with during proportions of ingredients 8:2 mixing HFO1234yf and R32, the ratio of the density of suction gas is now HFO1234yf:HFC410A ≈ 1:1.4.Therefore, when using HFO1234yf and R32 as duty cryogen, the flow of refrigerant of flow of roughly 1.4 times compared with HFC410A.Thus, when the spatial volume of the exhaust silencer 37 when to use HFC410A is for benchmark, when using HFO1234yf, if the spatial volume of exhaust silencer 37 is extended to about 1.01 ~ 1.4 times compared with using the situation of HFC410A, the decomposition that then can suppress the impact on earth environment, reduce loss, suppress refrigeration agent, thus can high efficiency be provided and the rotary compressor of high reliability.
In addition, when using using proportions of ingredients 6:4 mixing HFO1234yf and R32 as the mix refrigerant of HFO1234yf and R32, as refrigerating circulatory device in view of the efficiency comprising crushing etc., the performance roughly equal with existing annual efficiency of power dissipation can be maintained, and GWP can be suppressed for minimum.The ratio of the density of suction gas is now HFO1234yf:HFC410A ≈ 1:1.2.Therefore, when using HFO1234yf and R32 as duty cryogen, the flow of refrigerant of flow of roughly 1.2 times compared with HFC410A.Thus, when the spatial volume of the exhaust silencer 37 when to use HFC410A is for benchmark, when using HFO1234yf, if the spatial volume of exhaust silencer 37 is extended to about 1.01 ~ 1.2 times compared with using the situation of HFC410A, the decomposition that then can suppress conditioning, reduce loss, suppress refrigeration agent, thus can high efficiency be provided and the rotary compressor of high reliability.
Thus, discharge into the atmosphere even without the refrigeration agent be recovered, also can guarantee that it is few on the impact of greenhouse effects of the earth.In addition, the mix refrigerant mixed with above-mentioned ratio and mixed non-azeotropic refrigerant have nothing to do, and still can reduce temperature difference, behavior close near azeotropic mixed refrigerant, so cooling performance and the cooling performance coefficient (COP) of refrigeration plant can be improved.
In addition, above-mentioned exhaust silencer 37 adopts at least in the shape of exhaust port 38 top installation space, so can provide avoid firm from the flow velocity after exhaust port 38 is discharged faster state duty cryogen and exhaust silencer 37 collide, noise is low and lose few rotary compressor.
(mode of execution 2)
Fig. 6 is the longitudinal section of the exhaust silencer 37 of mode of execution 2.This mode of execution 2 is different from mode of execution 1 in as described below, and other aspects are substantially identical with mode of execution 1, so omit repeat specification, different parts is only described.Like this too in each mode of execution described below.
As shown in Figure 6, exhaust silencer 37b is formed with spatial volume along the axis of axle 31.As shown in Figure 6, be the structure that the axial length L of axle 31 is longer than the cross-directional length W of axle 31.Due to the hot area from exhaust silencer 37b to pressing chamber 39 can be reduced, guarantee the spatial volume of exhaust silencer 37b, so overcompression can be prevented, reexpand, the rising of discharge temperature can be suppressed, thus can provide can suppress refrigeration agent decomposition, high efficiency and the rotary compressor of high reliability.
(mode of execution 3)
Fig. 7 is the cross-sectional view in the exhaust silencer portion of mode of execution 3.As shown in Figure 7, exhaust silencer 37c adopts and makes its shape avoid the shape of the surrounding of suction port 40.Being heated to the suction duty cryogen by exhaust silencer 37c can be reduced efficiently thereby, it is possible to provide, the excessive rising of discharging duty refrigerant temperature can be prevented, suppress the rotary compressor of the high reliability of the decomposition of duty cryogen.
(mode of execution 4)
Fig. 8 is the longitudinal section of the compression mechanical part of mode of execution 4.As shown in Figure 8, exhaust silencer 37d is arranged at the side contrary with motor 2 in the mode of the lower end sheet 35 covering pressing chamber 39.Thus, that can reduce duty cryogen rotates being heated of the heating part produced from because of motor 2, and near exhaust silencer 37d, there is no the miscellaneous part as motor 2, so space, the easily design and the rotary compressor of high reliability easily guaranteeing to arrange exhaust silencer 37d can be provided.
In addition, the oil that exhaust silencer 37d is stored in around lower end sheet 35 surrounds, so can provide the rotary compressor that noise is low.
In addition, the increase of flow is not limited to exhaust silencer 37, in loss of total pressure generating unit preferably according to the volume in the density setting pressure loss occurrence portion of duty cryogen.Based on this design guideline, the rotary compressor of existing use can be used with different duty cryogens by simple design alteration.
In the above-described embodiment, use by the unitary system cryogen formed using the HF hydrocarbon between carbon and carbon with double bond as the refrigeration agent of basis or the mix refrigerant containing above-mentioned refrigeration agent as duty cryogen, but also can to use using the HF hydrocarbon between carbon and carbon with double bond as basis, the refrigeration agent that mixes with the hydrogen fluorohydrocarbon without double bond is as duty cryogen.
In addition, as duty cryogen, mix refrigerant HF hydrocarbon also can be used to be tetrafluoeopropene (HFO1234yf or HFO1234ze), making hydrogen fluorohydrocarbon be difluoromethane (HFC32).
In addition, as duty cryogen, mix refrigerant HF hydrocarbon also can be used to be tetrafluoeopropene (HFO1234yf), making hydrogen fluorohydrocarbon be pentafluoroethane (HFC125).
In addition, as duty cryogen, HF hydrocarbon also can be used to be tetrafluoeopropene (HFO1234yf), to make hydrogen fluorohydrocarbon be pentafluoroethane (HFC125), difluoromethane (HFC32) 3 compositions form mix refrigerant.
And, preferably carry out the mix refrigerant that 2 composition mixing or 3 compositions mix respectively, make global warming coefficient in above-mentioned any situation be all less than more than 5 750, be preferably less than 350.
In addition, as the refrigerator oil that above-mentioned duty cryogen uses, preferably using with the copolymer of polyoxyalkylene glycol class, glymes, poly-sub-(oxygen) alkyl glycol or its monoether and polyvinylether, polyol ester class and polycarbonate-based oxygenatedchemicals is the artificial oil of primary coil or the artificial oil that is primary coil with alkyl benzene or α paraffin class.
In addition, be illustrated for rotary compressor in the respective embodiments described above, but can certainly be a kind of scroll compressor as rotary compressor.
Industry utilizes possibility
As mentioned above, rotary compressor of the present invention, when using by the unitary system cryogen formed using the HF hydrocarbon between carbon and carbon with double bond as the refrigeration agent of basis or the mix refrigerant containing above-mentioned refrigeration agent as duty cryogen, also can realize high efficiency and high reliability.Thus, the purposes of the rotary compressors such as air conditioner, heat pump water heater, refrigeration and cold storage cabinet, dehumidifier can be also applied to.
Reference numeral explanation
1 seal container
2 motor
26 absolutely empty air gaps
28 notch parts
3 compression mechanical parts
30 cylinders
31 axles
31a eccentric part
32 rollers
33 blades
34 upper head plates
35 lower end sheets
36 expulsion valves
37,37b, 37c, 37d exhaust silencer
38 exhaust ports
39 pressing chambers
40 suction ports
51 refrigerant discharge leaders
Claims (10)
1. a rotary compressor, is characterized in that:
The unitary system cryogen of the HF hydrocarbon of double bond will be had between carbon and carbon, or at least contain the HF hydrocarbon between carbon and carbon with double bond and enclose with the duty cryogen that the hydrogen fluorohydrocarbon without double bond mixes, compression mechanical part comprises: the suction port sucking described duty cryogen; The described duty cryogen sucked from described suction port is made to become the pressing chamber of high pressure; By the exhaust port that the described duty cryogen being become high pressure by described pressing chamber is discharged; Cover the exhaust silencer of described exhaust port; Be accommodated in the roller in described pressing chamber; With in described pressing chamber, make described roller eccentric rotary and make described duty cryogen become the axle of high pressure, wherein
The spatial volume of described exhaust silencer, density according to the described duty cryogen enclosed sets, with use R410A as duty cryogen situation compared be extended to 1.01 ~ 1.70 times, described exhaust silencer at least forms space from exhaust port along the axis of described axle, and described exhaust silencer makes the described axial length structure longer than the length of the substantially horizontal of described axle.
2. rotary compressor as claimed in claim 1, is characterized in that:
Described exhaust silencer is the shape of not installation space volume around described suction port.
3. rotary compressor as claimed in claim 1 or 2, is characterized in that:
Comprise the motor of axle described in rotary actuation,
Described exhaust silencer is arranged at the side contrary with described motor across described pressing chamber.
4. rotary compressor as claimed in claim 1 or 2, is characterized in that:
Be provided with multiple described exhaust silencer.
5. rotary compressor as claimed in claim 1 or 2, is characterized in that:
Be the unitary system cryogen of tetrafluoeopropene or trifluoro propene by HF hydrocarbon, or with tetrafluoeopropene or trifluoro propene for primary coil using make global warming coefficient be less than more than 5 750 mode carry out mix refrigerant that 2 kinds of compositions mixing or 3 kinds of compositions mix respectively as duty cryogen.
6. rotary compressor as claimed in claim 1 or 2, is characterized in that:
By HF hydrocarbon with tetrafluoeopropene or trifluoro propene for primary coil and using make global warming coefficient be less than more than 5 750 mode respectively 2 kinds of compositions mix refrigerant of being mixed with difluoromethane or pentafluoroethane as duty cryogen or respectively 3 kinds of compositions be mixed with the mix refrigerant of difluoromethane and pentafluoroethane as duty cryogen.
7. rotary compressor as claimed in claim 5, is characterized in that:
Be set to and make global warming coefficient be less than 350.
8. rotary compressor as claimed in claim 1 or 2, is characterized in that:
As refrigerator oil, using with polyoxyalkylene glycol class, glymes, the copolymer gathering sub-(oxygen) alkyl glycol or its monoether and polyvinylether, polyol ester class and polycarbonate-based oxygenatedchemicals is the artificial oil of primary coil, or with the artificial oil that alkyl benzene or α paraffin class are primary coil.
9. rotary compressor as claimed in claim 1 or 2, is characterized in that:
Use makes that HF hydrocarbon is tetrafluoeopropene (HFO1234yf), hydrogen fluorohydrocarbon is that the mix refrigerant of difluoromethane (HFC32) is as duty cryogen, the proportions of ingredients of described mix refrigerant is the tetrafluoeopropene (HFO1234yf) of 80%, the difluoromethane as hydrogen fluorohydrocarbon (HFC32) of 20%, compared with the situation using R410A with duty cryogen, the spatial volume of described exhaust silencer is extended to 1.01 ~ 1.4 times.
10. rotary compressor as claimed in claim 1 or 2, is characterized in that:
Use makes that HF hydrocarbon is tetrafluoeopropene (HFO1234yf), hydrogen fluorohydrocarbon is that the mix refrigerant of difluoromethane (HFC32) is as duty cryogen, the proportions of ingredients of described mix refrigerant is the tetrafluoeopropene (HFO1234yf) of 60%, the difluoromethane as hydrogen fluorohydrocarbon (HFC32) of 40%, compared with the situation using R410A with duty cryogen, the spatial volume of described exhaust silencer is extended to 1.01 ~ 1.2 times.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010103292 | 2010-04-28 | ||
| JP2010-103292 | 2010-04-28 | ||
| PCT/JP2011/002370 WO2011135816A1 (en) | 2010-04-28 | 2011-04-22 | Rotary compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102859199A CN102859199A (en) | 2013-01-02 |
| CN102859199B true CN102859199B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180021069.7A Active CN102859199B (en) | 2010-04-28 | 2011-04-22 | Rotary compressor |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2565459B1 (en) |
| JP (1) | JP5828075B2 (en) |
| CN (1) | CN102859199B (en) |
| WO (1) | WO2011135816A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867450B (en) * | 2014-03-26 | 2017-03-29 | 安徽美芝精密制造有限公司 | Rotary compressor |
| WO2022004896A1 (en) | 2020-07-03 | 2022-01-06 | ダイキン工業株式会社 | Use as coolant in compressor, compressor, and refrigeration cycle device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532493A (en) * | 2008-01-11 | 2009-09-16 | 富士通将军股份有限公司 | Rotary compressor |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05133377A (en) * | 1991-11-12 | 1993-05-28 | Sanyo Electric Co Ltd | Closed type compressor |
| JPH08334095A (en) * | 1995-06-05 | 1996-12-17 | Sanyo Electric Co Ltd | Sealed rotary compressor |
| JPH09203386A (en) * | 1996-01-25 | 1997-08-05 | Hitachi Ltd | Closed compressor, and refrigeration air-conditioning system using the same |
| WO2003042543A1 (en) * | 2001-11-16 | 2003-05-22 | Lg Electronics Inc. | Muffler for hermetic rotary compressor |
| JP2009270496A (en) * | 2008-05-08 | 2009-11-19 | Sanden Corp | Compressor and refrigerating cycle using it |
| JP5339788B2 (en) * | 2008-06-13 | 2013-11-13 | 三菱電機株式会社 | Compressor and refrigeration cycle equipment |
| JP5294719B2 (en) * | 2008-06-17 | 2013-09-18 | 三菱電機株式会社 | Rotary compressor |
| JP5132436B2 (en) * | 2008-06-19 | 2013-01-30 | 三菱電機株式会社 | Refrigerant compressor |
| JP2010024984A (en) * | 2008-07-18 | 2010-02-04 | Daikin Ind Ltd | Screw compressor |
| JP2008303887A (en) | 2008-09-22 | 2008-12-18 | Daikin Ind Ltd | Muffler structure for compressor |
-
2011
- 2011-04-22 EP EP11774604.0A patent/EP2565459B1/en active Active
- 2011-04-22 JP JP2012512657A patent/JP5828075B2/en active Active
- 2011-04-22 WO PCT/JP2011/002370 patent/WO2011135816A1/en active Application Filing
- 2011-04-22 CN CN201180021069.7A patent/CN102859199B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532493A (en) * | 2008-01-11 | 2009-09-16 | 富士通将军股份有限公司 | Rotary compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011135816A1 (en) | 2011-11-03 |
| JP5828075B2 (en) | 2015-12-02 |
| JPWO2011135816A1 (en) | 2013-07-18 |
| EP2565459A1 (en) | 2013-03-06 |
| EP2565459B1 (en) | 2016-09-21 |
| EP2565459A4 (en) | 2015-07-08 |
| CN102859199A (en) | 2013-01-02 |
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