CN100376798C - scroll compressor - Google Patents
scroll compressor Download PDFInfo
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- CN100376798C CN100376798C CNB2005100629936A CN200510062993A CN100376798C CN 100376798 C CN100376798 C CN 100376798C CN B2005100629936 A CNB2005100629936 A CN B2005100629936A CN 200510062993 A CN200510062993 A CN 200510062993A CN 100376798 C CN100376798 C CN 100376798C
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- Prior art keywords
- safety valve
- chamber
- valve
- scroll compressor
- flow path
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- 238000003825 pressing Methods 0.000 claims abstract description 52
- 238000007906 compression Methods 0.000 claims abstract description 43
- 230000006835 compression Effects 0.000 claims abstract description 42
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 238000002788 crimping Methods 0.000 description 12
- 239000002826 coolant Substances 0.000 description 9
- 230000003321 amplification Effects 0.000 description 8
- 239000000314 lubricant Substances 0.000 description 8
- 238000003199 nucleic acid amplification method Methods 0.000 description 8
- 239000000446 fuel Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
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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
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
-
- 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
-
- 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
- F04C29/0021—Systems for the equilibration of forces acting on the pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
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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
-
- 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
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/22—Manufacture essentially without removing material by sintering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
一种防止安全阀打开的延迟并减轻运转负荷从而能够提高压缩机性能，同时，可量产得到稳定的安全阀功能的涡旋压缩机，其具备在压缩室(11)压缩工作流体的压缩机构部、形成喷出被压缩的工作流体的喷出压室(2f)的密闭容器。固定涡盘(5)具备在压缩室(11)的压力上升超设定压力时开路以连通压缩室(11)和喷出压室(2f)的安全阀装置(15)。安全阀装置(15)具备释放流路(15i)、可打开和关闭释放流路(15i)的安全阀(15d)、将弹性推压力施加到安全阀上的阀推压体(15h)、限位器(16)。阀推压体(15h)具有在安全阀关闭释放流路的状态自由、在打开释放流路的状态则被压缩的弹性部(15e)。
A scroll compressor capable of improving compressor performance by preventing delay in safety valve opening and reducing operating load, and capable of mass-producing a stable safety valve function, comprising a compression mechanism for compressing working fluid in a compression chamber (11) part, a closed container forming a discharge pressure chamber (2f) for discharging compressed working fluid. The fixed scroll (5) is equipped with a safety valve device (15) that opens a circuit to communicate between the compression chamber (11) and the discharge pressure chamber (2f) when the pressure of the compression chamber (11) rises above a set pressure. The safety valve device (15) has a release flow path (15i), a safety valve (15d) that can open and close the release flow path (15i), a valve pushing body (15h) that applies an elastic pushing force to the safety valve, and a limiter. bit register (16). The valve pressing body (15h) has an elastic part (15e) which is free when the safety valve closes the release flow path, and is compressed when the release flow path is opened.
Description
Technical field
The present invention relates to a kind of scroll compressor, particularly a kind of possess the scroll compressor that discharges the relief valve device of working fluid when overcompression or liquid compression from the working room.
Background technique
Concerning the scroll compressor that is used for indoor air conditioner etc., owing to using under the operating condition on a large scale, can not avoid under the liquid compression of the overcompression of gas or refrigerant or refrigerator oil, turning round.Therefore, wish to obtain to stand the scroll compressor of the structure of above condition.
As the scroll compressor of structure, there is the spy to open the scheme that (patent documentation 1) announced in the 2002-221171 communique with the overcompression of preventing and liquid compression.Come its mechanism is described from Figure 11 to this scroll compressor shown in Figure 13.
As shown in figure 11, in seal container 21, be formed with ejection and press chamber 21c with suction port 21a and exhaust port 21b.Folding and unfolding has motor 22 and compression mechanical part 23 in chamber 21c is pressed in this ejection.Compression mechanical part 23 adopt make fixed eddy plate 24 with vortex shape gas passageway, be configured to coil 25 interlocks and have the structure of pressing chamber 28 in the face of these fixed eddy plate 24 transportable rotation whirlpools with vortex shape crimping 25a.The Euclidean ring 26 that rotation whirlpool dish 25 makes it to revolve round the sun with the rotation that stops rotation whirlpool dish 25 time links, and simultaneously, also is connected with eccentric part 27a by the bent axle 27 of motor 22 rotary driving.
Utilize the driving of motor 22, when making dish 25 rotations of rotation whirlpool, suck refrigerant from suction port 21a, guiding compress successively by fixed eddy plate 24 and rotation whirlpool dish 25 pressing chambers that constitute 28, from the ejiction opening 24a of fixed eddy plate 24 compressed refrigerant is discharged to spray pressure chamber 21c.Then, the exhaust port 21b from seal container 21 presses the refrigerant of chamber 21c to discharge being discharged to ejection.In this scroll compressor, the base plate 24b on fixed eddy plate 24 tops is provided with the relief valve device 29 that connects pressing chamber 28 and ejection pressure chamber 21c.
As Figure 12 and shown in Figure 13, this relief valve device 29 forms and makes release aperture 29a, valve seat 29b, safe valve chamber 29c, sleeve be pressed into the 29d of portion to get up to form continuously, and makes their center line concentric.Have, relief valve device 29 contacts with safety valve 29e at valve seat 29b again, contacts with spring 29f on the spring fixing part 29h that is fixed on sleeve 29g on safety valve 29e, sleeve 29g is pressed into sleeve is pressed among the 29d of portion.Like this, safety valve 29e just is crushed on the valve seat 29b all the time.In addition, discharge is arranged by the pressure escape hole 29i of the gas of overcompression or liquid in sleeve 29g upper shed.
This relief valve device 29 is in the compression stroke way, when the pressure in pressing chamber 28 becomes the overcompression of ejection more than the pressure or the temperature conditions according to running time the etc. when suction port sucks the liquid compression of liquid coolant etc., as shown in figure 13, spring 29f is compressed, and safety valve 29e opens.It is to be reduced to occasion above setting pressure (elastic pushing pressure of weight+spring 29f of ejection pressure+safety valve 29e) in overvoltage that safety valve 29e opens.By opening of safety valve 29e, rise to ejection and press above gas or the liquid coolant of setting pressure of chamber 21c just shown in hollow arrow, in pressing chamber 28, to be discharged to ejection pressure chamber 21c like that.Like this, can reduce the damage that fixed eddy plate 24 and rotation whirlpool are coiled the overcompression loss between 25 and prevented crimping.
Also have, be accompanied by the rotation of rotation whirlpool dish, the pressing chamber 28 of pressure below ejection is pressed then is communicated with release aperture 29a, and as shown in figure 12, spring 29f stretches and closed safe valve 29e.Like this, when overcompression or during liquid compression, just repeat Figure 12 and state shown in Figure 13.
[patent documentation 1] spy opens the 2002-221171 communique
Yet concerning the relief valve device 29 of the scroll compressor of patent documentation 1, the bigger elastic pushing pressure of spring 29f is added on the ejection setting pressure, and the compressive force of this spring 29f is applied on the safety valve 29e as pushing force all the time.Therefore, the words safety valve 29e that does not become the pressure state of excessive compressive force just not opens, and can not discharge the gas of overcompression or liquid coolant etc.The result, produced the delay that safety valve 29e opens, in addition, when gas of discharging overcompression or liquid coolant, the flow path area of path 29m, pressure escape hole 29i is than producing flow path resistance around valve seat 29b that is produced because of release aperture 29a, when safety valve 29e opens and the valve seat path 29k between the safety valve 29e, the safety valve.Owing to above reason, the pressure rising part in the pressing chamber 28 just makes the operating load of motor 22 rise, thereby has the shortcoming that compressor performance descends.
In addition, deviation of elasticity coefficient the etc. during making of the deviation of the deviation of depth accuracy, the positional accuracy when sleeve 29g is pressed into and spring 29f when being pressed into the making of the 29d of portion because of sleeve, the pushing force of spring 29f is changed, the pressure that safety valve 29e is opened produces very big deviation, is difficult to volume production and obtains stable safety valve function.
Because sleeve 29g is pressed into sleeve and is pressed into the 29d of portion, so sleeve 29g needs high machining accuracy.With machining pressure escape hole 29i is set, because between the processing time consuming of sleeve 29g, thereby make sleeve become portion's product than higher price.
In addition, the assembling force of spring 29f of spring fixing part 29h that is fixed on sleeve 29g in original technology is because more weak without any consideration, the shortcoming that is easy to come off when having overcompression gas in discharging running or liquid coolant.
Because of size and the natural length of spring 29f and the relation of diameter of the scalable scope of spring 29f, valve seat 29b, safe valve chamber 29c, safety valve 29e, have safety valve 29e and might be hung in shortcoming between valve seat 29b and the safe valve chamber 29c.
Summary of the invention
The object of the present invention is to provide a kind ofly can prevent opening delay, alleviating operating load and improve compressor performance of safety valve, but volume production obtains the scroll compressor of stable safety valve function simultaneously.
In order to achieve the above object, the present invention adopts following structure, possesses compression mechanical part, seal container and relief valve device, compression mechanical part makes rotation whirlpool dish and fixed eddy plate interlock form pressing chamber, and the working fluid that sucks pressing chamber compressed, in the time of seal container folding and unfolding compression mechanical part, also have the ejection that is ejected in the compressed working fluid of pressing chamber and press the chamber, relief valve device is configured on the fixed eddy plate, when rising above setting pressure, the pressure of pressing chamber opens stream so that pressing chamber and ejection press the chamber to be communicated with, relief valve device possesses: be arranged on the release stream that being used on the fixed eddy plate is communicated with pressing chamber and ejection pressure chamber, be arranged to discharging the safety valve that stream opens and closes, with close the valve pushing body that elastic pushing pressure is imposed on when discharging stream safety valve at safety valve, the snubber that wherein also has the moving range of limiting valve pushing body, valve pushing body is configured between safety valve and the snubber, and has a spring section, the state that this spring section is closed described release stream at safety valve becomes free state, and the state of opening described release stream at safety valve is compressed.
Better concrete structure of the present invention is as described below.
(1) discharge stream and possess the release aperture that is communicated with pressing chamber and press the safe valve chamber that the chamber is communicated with and diameter is bigger than the diameter of release aperture with release aperture and ejection, it is indoor and possess the indoor mobile guide portion that leads of safety valve and the spring section of generation elastic pushing pressure that valve pushing body is configured in safety valve.
(2) except that described (1), constitute: guide portion is the guide element with external diameter smaller than the internal diameter of safety valve chamber, and spring section is mounted in the disc spring on the guide element.
(3) except that described (1) (2), constitute: guide portion or guide element have can be at the external diameter in the indoor mobile gap of safety valve, also has simultaneously to make to be pressurized to the path that ejection presses above gas of the setting pressure of chamber or liquid to escape.
(4) constitute: relief valve device is corresponding with a plurality of pressing chambers that are formed at compression mechanical part to be located at a plurality of places, constitutes the snubber of these relief valve devices with same parts.
(5) except that described (1) (2), constitute: rotation whirlpool dish and fixed eddy plate interlock up and down, described release stream is extending setting up and down, and safety valve bears the load of valve pushing body.
(6) except that described (1), constitute: valve pushing body is to have tight wound portion that constitutes guide portion and a disc spring that constitutes the scalable portion of spring section.
(7) except that described (1), constitute: form guide element with sintering metal or resin.
(8) except that described (2), constitute: the two ends at the disc spring that constitutes spring section have tight wound portion.
(9) except that described (3), constitute: making the ratio of the flow path area of path around the release aperture, valve seat path, safety valve, escape path is 1: 1～10: 1～15: 1～20.
(10) except that described (3), constitute: making the natural length and the diameter ratio of the disc spring that constitutes spring section is 1: 0.8～4.0, and making scalable length, valve-seat diameter, safe valve chamber diameter, safety valve diameter ratio is below 1: 3: below 5: more than 3.
Adopt scroll compressor of the present invention, can prevent that opening of safety valve from postponing and alleviate operating load and improve compressor performance.
Description of drawings
Fig. 1 is the sectional arrangement drawing of the 1st embodiment's of the present invention scroll compressor.
Fig. 2 is the drawing in side sectional elevation of the compression mechanical part of Fig. 1.
Fig. 3 is the amplification profile of closed circuit state of the relief valve device of Fig. 1.
Fig. 4 is the amplification profile of open-circuit condition of the relief valve device portion of Fig. 3.
Fig. 5 is the plan view of the fixed eddy plate of Fig. 1.
Fig. 6 is the enlarged view at the main position of Fig. 5.
Fig. 7 is the sectional drawing of closed circuit state of relief valve device of the scroll compressor of the present invention's the 2nd mode of execution.
Fig. 8 is the amplification profile of the relief valve device of Fig. 7 at open-circuit condition.
Fig. 9 is that the relief valve device of scroll compressor of the present invention's the 3rd mode of execution is at the sectional drawing of closed circuit state.
Figure 10 is the amplification profile of open-circuit condition of the relief valve device portion of Fig. 9.
Figure 11 is the sectional arrangement drawing of original scroll compressor.
Figure 12 is the amplification profile of closed circuit state of the relief valve device of Figure 11.
Figure 13 is the amplification profile of open-circuit condition of the relief valve device of Figure 11.
Among the figure: the 1-scroll compressor, the 2-seal container, the 2a-shell, 2b-covers chamber, the 2c-bottom chamber, the 2d-suction port, the 2e-exhaust port, the chamber is pressed in the 2f-ejection, the 3-compression mechanical part, 4-motor, 4a-stator, 4b-rotor, the 5-fixed eddy plate, 5a-suction port, 5b-gas passageway, 5c-crimping, the 5d-base plate, 5e-ejiction opening, 6-rotation whirlpool dish, 6a-crimping, the 7-bent axle, 7a-main shaft, 7b-eccentric part, 7c-fuel feeding path, the 8-bolt, 9-support, 9a-main bearing, 10-suction chamber, the 11-pressing chamber, 12-Euclidean ring is pressed the chamber in the middle of the 13-lubricant oil, 14-, the 15-relief valve device, 15a-release aperture, 15b-valve seat, 15c-safety valve chamber, 15d-safety valve, 15e-spring, the 15f-guide element, 15g-escape hole, 15h-valve pushing body, 15i-discharges stream, 16-snubber (retainer), 17-escape hole.
Embodiment
Below, with reference to accompanying drawing a plurality of embodiments of the present invention are described.Prosign among each embodiment's the figure is represented same parts or suitable parts.
At first, with Fig. 1～Fig. 6 the present invention the 1st embodiment's scroll compressor is described.
At first, with reference to Fig. 1 and Fig. 2 the overall structure of the scroll compressor 1 of present embodiment is described, Fig. 1 is the sectional arrangement drawing of the present invention the 1st embodiment's scroll compressor, and Fig. 2 is the drawing in side sectional elevation of the compression mechanical part of Fig. 1.
Scroll compressor 1 is made of hyperbaric chamber cell-type closed type scroll compressor, is using under the operating condition on a large scale as the part of freeze cycle such as indoor air conditioner.Scroll compressor 1 possesses: have setting the rotation whirlpool dish 6 of vortex shape crimping 6a, 5c and the compression mechanical part 3 of fixed eddy plate 5 are set; Drive the motor 4 of this compression mechanical part 3; Folding and unfolding the seal container 2 of tubular lengthwise of compression mechanical part 3 and motor 4.Top in seal container 2 disposes compression mechanical part 3, disposes motor 4 in the bottom.And, rotation whirlpool dish 6 and fixed eddy plate interlock about in the of 5.In addition, the bottom storage at seal container 2 has lubricant oil 13.
Seal container 2 on shell 2a cylindraceous up and down welding cover chamber 2b and end chamber 2c and constitute.The inside that be provided with suction port 2d in lid chamber 2b, is provided with the seal container 2 of exhaust port 2e in shell 2a side forms ejection and presses chamber 2f.Press chamber 2f folding and unfolding that compression mechanical part 3 and motor 4 are arranged in ejection.
Compression mechanical part 3 possesses: the fixed eddy plate 5 that has vortex shape crimping 5c on base plate 5d; The same rotation whirlpool dish 6 that on base plate 5d, has vortex shape crimping 6a; With the support 9 with fixed eddy plate 5 incorporate supports rotation whirlpools dishes 6 such as secure component.That is, as shown in Figure 2, the gas passageway 5b that on fixed eddy plate 5, is provided with suction port 5a and presses chamber 2f to be communicated with ejection, this gas passageway 5b forms vortex shape by Vorticose crimping 5c.With this fixed eddy plate 5 roughly discoid rotation whirlpool dish that rotates freely 6 that has been relative to the configuration.As shown in Figure 2, on rotation whirlpool dish 6, be provided with the vortex shape crimping 6a with the crimping 5c interlock of fixed eddy plate 5, between crimping 5c and crimping 6a, be formed with suction chamber 10 and pressing chamber 11.
Fixed eddy plate 5 is fixed on the support 9 by bolt 8, and the outer circumferential side of support 9 is fixed on the internal face of seal container 2 by welding.On fixed eddy plate 5, be provided with relief valve device 15.On support 9, possesses the main bearing 9a that supports rotatable bent axle 7 freely.Side links the eccentric part 7b that bent axle 7 is arranged below the dish 6 of rotation whirlpool.
And, below the dish 6 of rotation whirlpool, dispose Euclidean ring 12 between side and the support 9, Euclidean ring 12 is installed in the groove that is formed at sides below the rotation whirlpool dish 6 and is formed in the groove on the support 9, and the off-centre rotation that this Euclidean ring 12 plays the eccentric part 7b that accepts bent axle 7 is revolved round the sun rotation whirlpool dish 6 no rotations ground.
Motor 4 possesses stator 4a and rotor 4b.Stator 4a links up by being pressed in the seal container 2.Rotor 4b can rotate and be configured in the stator 4a.Motor 4 makes dish 6 rotations of rotation whirlpool by the bent axle 7 that is fixed on the rotor 4b.
Bent axle 7 possesses main shaft 7a and eccentric part 7b and constitutes, and the main bearing 9a and the lower bearing 17 that are arranged on the support 9 support.Eccentric part 7b is eccentric and by integrally formed with respect to the main shaft part 7a of bent axle 7, is entrenched in to be located at the rotation whirlpool and to coil in the swivel bearing at 6 back sides.Bent axle 7 is subjected to the driving of motor 4 and drives, and makes eccentric part 7b do off-centre with respect to the main shaft part 7a of bent axle 7 and rotatablely moves, and rotation whirlpool dish 6 is driven.In addition, bent axle 7 portion within it is provided with fuel feeding path 7c with lubricant oil 13 guiding main bearing 9a, lower bearing 17 and swivel bearing, and the fuel supply line 7d that picks up lubricant oil 13 guiding fuel feeding path 7c at the axle head of motor part side is installed.
Being formed with pressure between back side of rotating whirlpool dish 6 and support 9 is the middle chamber 14 of pressing of the pressure of suction port 2d and the intermediate value that sprays the pressure of pressing chamber 2f.Press chamber 14 and ejection to press the pressure difference of chamber 2f in the middle of utilizing, by being formed at the fuel feeding path 7c of bent axle 7 central parts, the lubricant oil 13 that is enclosed in seal container 2 bottoms is supplied to main bearing 9a etc.This centre presses chamber 14 to be formed in the path of the slide part of the 13 supply compression mechanical parts 3 of the lubricant oil in the seal container 2.
When compression mechanical part 3 rotatablely moves by the bent axle 7 that is driven by motor 4, utilize rotation whirlpool dish 6 and fixed eddy plate 5 formed pressing chambers 11 to move and volume diminishes, the cold media air that sucks is compressed along with central direction to vortex.Compressed cold media air is pressed the chamber ejection from the ejection of ejiction opening 5e in seal container 2 of the base plate 5d substantial middle that is located at fixed eddy plate 5.
Suction port 2d is the facial suction side of running through seal container 2 and being used for cold media air is imported compression mechanical part 3 from the seal container 2.Exhaust port 2e is connected with the side, so that press chamber 2f to be communicated with the ejection in the seal container 2.
In this scroll compressor 1, by making the rotor 4b rotation of motor 4, when Jie makes dish 6 rotations of rotation whirlpool by bent axle, the cold media air that is inhaled into from gas suction port 2d is ejected into the ejection pressure chamber 2f of seal container 2 from the ejiction opening 5e that is located at fixed eddy plate 5 central authorities after being compressed by fixed eddy plate 5 and rotation whirlpool dish 6 pressing chambers that form 11.This cold media air that is ejected by the path that is located at support 9 peripheries be directed to the below, cooled off motor 4 after, be directed to from exhaust port 2e in the freeze cycle of seal container 2 outsides.
Secondly, with reference to Fig. 3 to Fig. 6 relief valve device 15 is described.Fig. 3 is the amplification profile of the relief valve device 15 of Fig. 1 in closed circuit state, and Fig. 4 is the amplification profile of the relief valve device 15 of Fig. 3 at open-circuit condition, and Fig. 5 is the plan view of the fixed eddy plate of Fig. 1, and Fig. 6 is the enlarged view of the major component of Fig. 5.
The pressure that relief valve device 15 is used in pressing chamber 11 is pressed chamber 2f for ejection pressure is ejected into ejection with cold media air from pressing chamber 11 when above, and is corresponding with a plurality of pressing chambers that are formed at compression mechanical part and in a plurality of local settings (with reference to Fig. 5) of fixed eddy plate 5.This relief valve device 15 is closed usually, from the operating condition of suction port 2d according to gas coolant or indoor air conditioner etc., and liquid coolant or mainly be that vaporific lubricant oil 13 etc. is inhaled into pressing chamber 11 as working fluid.Utilize rotatablely moving of rotation whirlpool dish 6, in the compressed process of these working fluids, the pressure pressing chamber 11 in is ejection pressure when above, and relief valve device 15 is opened and is communicated with pressing chamber 11 and ejection pressure chamber 2f.
As Fig. 3 and shown in Figure 4, relief valve device 15 possesses the stream of release 15i, safety valve 15d, valve pushing body 15h and snubber 16.Discharge stream 15i and be made of release aperture 15a and safe valve chamber 15c, the base plate 5d that this release stream 15i is formed at fixed eddy plate 5 upward and with pressing chamber 11 and ejection presses chamber 2f to be communicated with.Safety valve 15d is used for opening and closing discharging stream 15i.Valve pushing body 15h is used for when safety valve 15d closes elastic pushing pressure being imposed on safety valve 15d, and it is arranged in the safe valve chamber 15c, is configured between safety valve 15d and the snubber 16.Possesses spring section to mobile guide portion that leads in the safety valve chamber 15c and generation elastic pushing pressure.Snubber 16 is used for the moving range of limiting valve pushing body 15h, when overcompression valve is pushed body 15h and remains on assigned position.
The release aperture 15a that is communicated with pressing chamber 11, circular valve seat 15b, the safe valve chamber 15c and the fixed eddy plate 5 that are communicated with ejection pressure chamber 2f form continuously, constitute the release stream 15i that links pressing chamber 11 and ejection pressure chamber 2f.The diameter of release aperture 15a is little, and the diameter of safe valve chamber 15c is big, is formed with valve seat 15b on the end difference of safety valve chamber 15c.That is, release aperture 15a, valve seat 15b, safe valve chamber 15c form on the thickness direction of the base plate 5d of fixed eddy plate 5.Particularly, make the internal diameter size of release aperture 15a and length dimension minimum, with the volume that becomes dead volume of compresses chamber 11.In addition, make safe valve chamber 15c bigger so that can make the size of the valve pushing body 15h that can fully guarantee function than release aperture 15a diameter.
And, on safety valve chamber 15c, having disposed safety valve 15d, the pressure of this safety valve 15d in pressing chamber 11 surpasses to open when spraying the setting pressure of pressing chamber 2f so that gas in the pressing chamber 11 or fluid escape into ejection presses chamber 2f.In the safe valve chamber 15c side of release aperture 15a, the safety valve 15d that is made by discoid Steel Spring Plate etc. is configured to contact with circular valve seat 15b on the interface that is located at release aperture 15a and safe valve chamber 15c.
Carry the valve pushing body 15h that forms by guide element 15f that constitutes guide portion and the elastic member 15e that constitutes spring section on the top of safety valve 15d.Also have, valve pushing body 15h is made by sheet metal etc., the end of elastic member 15e is pressed in the part of guide element 15f and the one formation that combines.Safety valve stream 15i extends up and down and forms, and safety valve 15d bears the load of valve pushing body 15h.The 15d that opens the safety-valve is reduced to situation above setting pressure (weight of weight+guide element 15f of weight+elastic member 15e of ejection pressure+safety valve 15d) in overvoltage.Also have, the pushing force that " weight of the weight of the weight of safety valve 15d+elastic member 15e+guide element 15f " is produced is very little.
In said structure, motor 4 is driven in rotation, when rotation whirlpool dish 6 rotates, cold media air is directed to suction chamber 10 and pressing chamber 11 from suction port 2d, compressed gas is discharged to ejection from the ejiction opening 5e of fixed eddy plate 5 and presses chamber 2f, further is discharged to the pipe arrangement of the freeze cycle of indoor air conditioner etc. from the exhaust port 2e of seal container 2.
In the compressed process of cold media air, when the pressure in pressing chamber 11 is common running below the setting pressure (weight of the weight+valve pushing body 15h of ejection pressure+safety valve 15d), because the pressure height of the pressure ratio pressing chamber 11 of chamber 2f is pressed in ejection, so because of this pressure difference, safety valve 15d contacts with valve seat 15b, and release aperture 15a is by closed circuit (with reference to Fig. 3).In this is closed circuit and since differential pressure be applied to always safety valve 15d above, so this closed circuit being kept.Like this, when turning round usually, working fluid can be from relief valve device 15 ejections.At this moment, the volume of safe valve opening 15a becomes the part of the volume of pressing chamber 11, in compression stroke, owing to become the dead volume of the expansion-loss once again that is accompanied by remaining gas, wishes to make this volume as far as possible little as previously mentioned.
On the other hand, in the operating condition of room conditioning etc. in cold media air or liquid coolant or the compressed process of lubricant oil, when the pressure in pressing chamber 11 surpasses setting pressure (during the overcompression running), the pressure height of the pressure ratio ejection chamber 2f of pressing chamber 11, because of this pressure difference, the safety valve 15d 15b that lifts off a seat, release aperture 15a be opened (with reference to Fig. 4).Be accompanied by moving of this safety valve 15d, valve pushing body 15h is directed to parts 15f guiding and moves.Be moved further, guide element 15f touches snubber 15f, and it moves and is restricted, and elastic member 15e is pushed and is compressed by safety valve 15d.Working fluid in the pressing chamber 11 is ejected into ejection and presses in the 2f of chamber as the hollow arrow of Fig. 4.Like this, can prevent that overcompression loss and whirlpool from coiling the damage on limit.
In this overcompression operating condition, be accompanied by the rotation of rotation whirlpool dish, next the pressing chamber 11 of pressure below ejection pressure be communicated with release aperture 15a, the pressure of pressing chamber 11 becomes and presses the pressure of chamber 2f low than ejection, and moment is closed safety valve 29e together because of the elastic pushing pressure of this differential pressure and elastic member 15e.Like this, when overcompression is turned round, repeat Fig. 4 and state shown in Figure 3.
In the scroll compressor 1 of present embodiment, setting pressure as the 15d that is used to open the safety-valve, can remove in original compressor the compressive force that always safety valve is applied the elastic member of load that is pressed into because of sleeve, replace the only load that deadweight applied of valve pushing body 15h (elastic member 15e and guide element 15f), can reduce the setting pressure of the 15d that opens the safety-valve significantly, can reduce the corresponding induction-motor load of pressure rising part in the pressing chamber 11 that postpones to cause because of opening of safety valve 15d, improve compressor performance.Also have, can remove the deviation that is pressed into the compressor performance that pressure oscillation that the deviation of the making precision such as elastic constants of hole and elastic member makes safety valve open produces because of original sleeve, only the weight of the guide element 15f that constitutes valve pushing body 15h and elastic member 15e is managed and get final product, can make the setting pressure of the 15d that opens the safety-valve stable, the scroll compressor 1 of stable performance can be provided.
Integrate narration with the effect that constitutes based on the present embodiment of above explanation, as described below.
Adopt present embodiment, because valve pushing body 15h is configured between safety valve 15d and the snubber 16, have at safety valve 15d and close the compressed spring section of state that the state that discharges stream becomes free state and opens the release stream at safety valve 15d, can prevent the delay that safety valve 15d opens, only this can rise by corresponding inhibition pressing chamber 11 interior pressure, like this, can alleviate operating load and improve compressor performance, simultaneously, can stably obtain beginning the 15d that opens the safety-valve, like this, can volume production obtain stabilization function as relief valve device 15.
In addition, adopt present embodiment, discharge stream 15i and possess: the release aperture 15a that is communicated with pressing chamber 11; Press the chamber to be communicated with and the safe valve chamber 15c bigger with release aperture 15a and ejection than release aperture 15a diameter, valve pushing body 15h is configured in the safe valve chamber 15c, and have the indoor mobile guide portion that leads of safety valve and produce the spring section of elastic pushing pressure, therefore, the volume that can dwindle release aperture 15a also reduces the expansion-loss again of the working fluid that causes because of release aperture 15a, movement of valve pushes body 15h reliably in large diameter safe valve chamber 15c, like this, can access high-performance, high reliability.
Have again, adopt present embodiment, because guide portion is to form with the guide element 15f with external diameter smaller than the internal diameter of safety valve chamber 15c, spring section is to form with the disc spring 15e that is installed on the guide element 15f, so can obtain elastic pushing pressure with the high disc spring 15e of cheap reliability, make guide element 15f simultaneously with suitable guide function.
And, adopt present embodiment, because guide element 15f has the external diameter in the gap that can move described safe valve chamber, simultaneously opening has to make and is pressurized to the path that ejection presses above gas of the setting pressure of chamber 2f or liquid to escape, so can realize the reliable guide function and the discharge function of gas or liquid reliably simultaneously.
Have again, adopt present embodiment, in the formation of a plurality of places, constitute the snubber 16 of these relief valve devices 15 because relief valve device 15 is corresponding with a plurality of pressing chambers 11 that are formed at compression mechanical part 3 with same parts, thus can with the reliable in structure of cheapness prevent overcompression.
Have again, adopt present embodiment, because rotation whirlpool dish 6 and fixed eddy plate interlock about in the of 5, discharging stream 15i forms extending up and down, safety valve 15d bears the load of guide element 15f and disc spring 15e, though also can be applied in safety valve 15d closed circuit so the load of guide element 15f and disc spring 15e is very little, like this, not increase loss fully and just can guarantee the reliable closed circuit performance of safety valve 15d.
Secondly, with Fig. 7 and Fig. 8 the 2nd embodiment of the present invention is described.Fig. 7 be the present invention the 2nd embodiment's the relief valve device 15 of scroll compressor at the sectional drawing of closed circuit state, Fig. 8 is the sectional drawing of the relief valve device 15 of Fig. 7 at open-circuit condition.What time different with the 1st embodiment the 2nd embodiment is the following stated, and other point and the 1st embodiment are basic identical.
In the 2nd embodiment, valve pushing body 15h forms with a disc spring 15h with the tight wound portion 15k that constitutes guide portion and scalable the 15e that constitutes spring section.Promptly, though Fig. 7 is a safety valve 15d closing state, but the tight wound portion 15k on the top of valve pushing body 15h closely is wound in coiled type with the outside dimension that moves swimmingly at safety valve chamber 15c internal diameter and makes, and scalable 15e of bottom is used to play escape to the buffer function of gas or the fluid pushing when release aperture 15a escapes with at gas or fluid and afterwards pushes back to moment the effect that safety valve 15d closes.Also have, scalable 15e is thinner than tight wound portion 15k external diameter, and when bearing load, scalable 15e contracted diameter becomes big, also can not touch safe valve chamber 15c inwall.The ejection of 11 pressure ratio pressed chamber 2f pressure to become overcompression and the 15d that opens the safety-valve greatly when shown in Figure 8 was compression, for gas or fluid are escaped, when safety valve 15d and valve pushing body 15h rise and snubber 16 state of contact of anticreep.
Adopt the 2nd embodiment, form with a disc spring, push body so can make the valve of poling cheapness with the tight wound portion that constitutes guide portion and the scalable portion that constitutes spring section because valve pushes body.
Secondly, with Fig. 9 and Figure 10 the 3rd embodiment of the present invention is described.Fig. 9 be the 3rd embodiment's of the present invention relief valve device 15 of scroll compressor at the sectional drawing of closed circuit state, Figure 10 is the sectional drawing of the relief valve device 15 of Fig. 9 at open-circuit condition.What time different with the 1st embodiment the 3rd embodiment is the following stated, and other point and the 1st embodiment are basic identical.
In the 3rd embodiment, form guide element 15f with cylindrical body, form escape hole 15g in cylindrical central authorities, simultaneously, around it, form a plurality of escapes hole 15l.Owing to this guide element 15f is and the similar structure of original sleeve, can utilize manufacturing mechanism, simultaneously, can guarantee and the original same performance that working fluid is escaped from guide element 15f.
In addition, at the two ends of the disc spring that constitutes elastic member 15e tight wound portion is set.By making these two ends is tight wound portion, because the mounting direction of disc spring is just in a direction with the assembling of guide element 15f the time, assembling performance is good.In addition, utilize tight wound portion, be difficult to come off, can improve assembling performance, prevent coming off of disc spring with the structure of cheapness from guide element 15f.
Adopt present embodiment, making natural length and the diameter ratio of elastic member 15e is 1: 0.8～4.0, and making the ratio of the external diameter of the internal diameter of the diameter of the scalable length of its elastic member 15e, circular valve seat 15b, safe valve chamber 15c and safety valve 15d is below 1: 3: below 5: more than 3.By such relation, can leave and open when discharging stream 15i from valve seat 15b at safety valve 15d, prevent that safety valve 15d from discharging the collapse of stream 15i posture and tangling.
In addition, adopt present embodiment, the flow path area ratio of path 15i, escape path 15m is 1: 1～10: 1～15: 1～20 around release aperture 15a, valve seat path 15n, the safety valve by making, and can reduce the flow path resistance of relief valve device 15.
Obtain by making sintering metal or ester moulding as Fig. 9 and guide element 15f shown in Figure 10, also can make at an easy rate with elongated shape.
In addition, as with the 3rd embodiment being (other embodiment also is) such shown in the representative, snubber 16 need not be gapped with the base plate 5d of fixed eddy plate 5.In addition, be that representative makes safe valve chamber 15c make two sections shapes like that similarly with the 3rd embodiment, by guide portion or guide element are made the structure that limits access to the release aperture side as required, can prevent that guide portion or guide element from the indoor vibration greatly of safety valve, producing the Strike note with snubber 16.
As mentioned above, adopt the scroll compressor of having used embodiments of the present invention, can prevent the delay that safety valve is opened, the flow path resistance when reducing discharge overcompression gas or liquid coolant with little dead volume reduces operating load and also improves compressor performance.In addition, can prevent tangling of safety valve, volume production and obtain the safety valve function of reliability high stable at an easy rate.
Claims (11)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004158814 | 2004-05-28 | ||
| JP2004158814 | 2004-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1702328A CN1702328A (en) | 2005-11-30 |
| CN100376798C true CN100376798C (en) | 2008-03-26 |
Family
ID=35632245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100629936A Expired - Fee Related CN100376798C (en) | 2004-05-28 | 2005-04-04 | scroll compressor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5171899B2 (en) |
| KR (1) | KR100730250B1 (en) |
| CN (1) | CN100376798C (en) |
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| CN102052310A (en) * | 2009-10-26 | 2011-05-11 | 日立空调·家用电器株式会社 | Scroll compressor |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR100730250B1 (en) | 2007-06-20 |
| KR20060045684A (en) | 2006-05-17 |
| JP5171899B2 (en) | 2013-03-27 |
| CN1702328A (en) | 2005-11-30 |
| JP2010270762A (en) | 2010-12-02 |
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Effective date of registration: 20160826 Address after: Hongkong aoteng Plaza No. 8 Chinese Kowloon Linze street 12 floor Patentee after: Johnson Controls Hitachi air conditioning technology (Hong Kong) Co.,Ltd. Address before: Tokyo, Japan Patentee before: Hitachi Appliances, Inc. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180705 Address after: Tokyo, Japan Patentee after: HITACHI-JOHNSON CONTROLS AIR CONDITIONING, Inc. Address before: Hongkong aoteng Plaza No. 8 Chinese Kowloon Linze street 12 floor Patentee before: Johnson Controls Hitachi air conditioning technology (Hong Kong) Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20080326 |