CN100404869C - Variable capacity rotary compressor - Google Patents
Variable capacity rotary compressor Download PDFInfo
- Publication number
- CN100404869C CN100404869C CNB2005101346243A CN200510134624A CN100404869C CN 100404869 C CN100404869 C CN 100404869C CN B2005101346243 A CNB2005101346243 A CN B2005101346243A CN 200510134624 A CN200510134624 A CN 200510134624A CN 100404869 C CN100404869 C CN 100404869C
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- China
- Prior art keywords
- blade
- roller
- retreat
- rotary compressor
- advance
- Prior art date
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- Expired - Fee Related
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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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/18—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber
- F04C28/22—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber by changing the eccentricity between cooperating 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
- 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
- F04C18/34—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 the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—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 the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
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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
- F04C23/001—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 of similar working principle
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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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
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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
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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
- F04C2240/00—Components
- F04C2240/40—Electric motor
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a variable capacity rotary compressor capable of preventing severely wearing of a roller exterior surface. The variable capacity rotary compressor comprises crusts of a first and second compressing chambers which are divided by each other; a first and second rollers arranged respectively inside the first and second compressing chambers; a first vane for setting off the first compressing chamber according to a radial advancing and retreating of the first roller; a second and third vanes slidely supported with each other for setting off the second compressing chamber according to a radial advancing and retreating of the second roller; a vane controller for restricting or releasing the third vane and for controlling the compressing volume; wherein the second vane comprises a extension part extended for covering a front end of the third vane. Further, when the second roller rotates in condition of a restriction of the third vane, in the sake of repeatedly compressing and racing the second compressing chamber, the extension part with a length in its advancing and retreating direction is less than a maximum advancing and retreating distance of the second vane.
Description
Technical field
The present invention relates to a kind of capacity variable rotary compressor, relate in particular to a kind of capacity variable rotary compressor that can change compression volume by the advance and retreat action of control blade.
Background technique
Korea S's publication communique " 10-2004-0021140 number " has disclosed a kind of a kind of capacity variable rotary compressor that can change compression volume by the advance and retreat action of control blade.This rotary compressor comprises the roller of the shell that forms the cylinder type pressing chamber, eccentric rotation in the pressing chamber of shell, according to the radially blade of advance and retreat of roller.Blade is made of first blade on the top that is separated from each other and second blade of bottom, and first blade-side is provided for retraining the constraint element of first blade as required, so that first blade and roller outer surface are separated from each other.This rotary compressor dallies when the constraint of the restrained unit of first blade, and compresses when the constraint of the not restrained unit of first blade.Therefore, as required by first blade being retrained or constraint relief can change compression volume.
But this rotary compressor is owing to only have a pressing chamber, and regulates compression or idle running action and change compression volume thus by the control constraint element, is restricted in the time of therefore will changing compression volume according to various scopes.
In addition, this rotary compressor is owing to be separated into first blade and second blade with the contacted blade of roller, thereby the roller outer surface that contacts first blade and the critical portion of second blade when long-time use may produce heavy wear.
Summary of the invention
The present invention proposes in order to solve aforesaid problem, its purpose be to provide a kind of can be than the excursion that enlarged compression volume in the past, and can make the capacity variable rotary compressor of the multiple variation of compression volume.
Another object of the present invention is to provide a kind of roller outer surface that can prevent by the capacity variable rotary compressor of heavy wear.
According to capacity variable rotary compressor provided by the present invention, it is characterized in that comprising: shell to achieve these goals with first and second pressing chamber of being distinguished mutually; Be separately positioned on first and second roller in described first and second pressing chamber; The time divide first blade of described first pressing chamber according to the radially advance and retreat of described first roller; The time divide second blade and the 3rd blade described second pressing chamber, that can slide mutually and support according to the radially advance and retreat of described second roller; Compression volume retrains described the 3rd blade or the blade control gear of constraint relief in order to control; And, the extending portion that prolongs up or down from the described second blade front end in order to cover described the 3rd blade front end; And when described second roller rotated under described the 3rd blade suffers restraints state, described extending portion made its advance and retreat direction length less than the maximum advance and retreat of described second blade distance for compression and the idle running of carrying out described second pressing chamber repeatedly.
And the advance and retreat direction length of described extending portion is 40～60% of the maximum advance and retreat of described second blade distance.
And, the outer surface of described second roller of preceding end in contact of described second blade, and have width up and down corresponding to the described second roller height.
And described three-vaned front end is close to the rear end of described extending portion, and has the width up and down corresponding to described extending portion rear end.
And described blade control gear comprises: the cylinder that is arranged on the described shell of described the 3rd blade-side; Can advance and retreat and be arranged in the described cylinder and the piston that is connected with described the 3rd blade; The first passage that is connected with described cylinder internal; Connect described compressor and discharge the second channel of side and described first passage; The third channel that connects described compressor suction side and described first passage; Be arranged at described first, second, third passage and interconnect the changeable channel valve at place.
And described three-vaned width is less than the width of described second blade.
And, comprise according to capacity variable rotary compressor provided by the present invention: shell with pressing chamber; Be arranged on the roller in the described pressing chamber; The time divide first blade and second blade described pressing chamber, that can slide mutually and support according to the radially advance and retreat of described roller; Compression volume retrains described second blade or the blade control gear of constraint relief in order to control; And, the extending portion that prolongs up or down from the described first blade front end for the front end that covers described second blade; And when described roller rotated under the bound state of described second blade, described extending portion was in order to compress repeatedly and idle running makes its advance and retreat direction length less than the maximum advance and retreat of described first blade distance.
Description of drawings
The sectional view of the capacity variable rotary compressor structure that Fig. 1 is provided as the foundation first embodiment of the invention represents that second pressing chamber is carrying out the view of compressed action;
Fig. 2 is the sectional view according to II-II ' line of Fig. 1;
The sectional view of the capacity variable rotary compressor structure that Fig. 3 is provided as the foundation first embodiment of the invention represents that second pressing chamber carries out the view of part idle running;
Fig. 4 is according to the sectional view of IV-IV ' line of Fig. 3;
The view that the extending portion of capacity variable rotary compressor second blade that Fig. 5 is provided for the foundation first embodiment of the invention enters the blade engagement groove;
Capacity variable rotary compressor second blade and three-vaned structural representation that Fig. 6 is provided for the foundation first embodiment of the invention;
The sectional view of the capacity variable rotary compressor structure that Fig. 7 is provided for the foundation second embodiment of the invention.
Main symbol description: 10 is seal container, and 20 is drive motor, and 21 are rotating shaft, 30 is compression set, and 31 is first pressing chamber, and 32 is second pressing chamber, 42 is first roller, and 43 is first blade, and 52 is second roller, 53 is second blade, and 53a is an extending portion, and 54 is the 3rd blade, 70 is the blade control gear, 71 is cylinder, and 72 is piston, and 76 is the changeable channel valve.
Embodiment
Below, describe in detail according to preferred embodiment provided by the present invention with reference to accompanying drawing.
Fig. 1 to Fig. 6 is provided by the capacity variable rotary compressor that provides according to first embodiment of the invention.First embodiment's capacity variable rotary compressor comprises the drive motor 20 that is arranged at seal container 10 inside upper part, is arranged at seal container 10 lower inside and is connected in the compression set 30 of drive motor 20 by rotating shaft 21 as shown in Figure 1.
As shown in Figures 1 to 4, compression set 30 comprises shell with first pressing chamber 31 distinguished mutually and second pressing chamber 32, is arranged at first and second compression set 40,50 of first and second pressing chamber 31,32 for pressurized gas respectively.
Shell comprises: top first main body 33 that forms cylinder type first pressing chamber 31; Form cylinder type second pressing chamber 32 and be arranged at second main body 34 of first main body, 33 bottoms; Load on the intermediate plate 35 between first and second main body 33,34 in order to divide first pressing chamber 31 and second pressing chamber 32; Be installed in first and second flange 36,37 of first main body, 33 tops and second main body, 34 bottoms respectively, support rotating shaft 21 when being used to close on first pressing chamber 31 side opening and second pressing chamber, 32 open lower side.Rotating shaft 21 connects first and second pressing chamber 31,32 centers, so that compression set 40,50 work of first and second pressing chamber 31,32 inside.
First and second compression set 40,50 comprises first and second eccentric part 41,51 that is arranged at each pressing chamber 31,32 rotating shafts 21 outer surface respectively and first and second roller 42,52 that rotatably is incorporated into first and second eccentric part 41,51 outer surfaces for the internal surface with each pressing chamber 31,32 contacts rotation respectively.The eccentric direction that is arranged at first eccentric part 41 of rotating shaft 21 outer surfaces and second eccentric part 51 is opposite mutually.This is in order to keep the equilibrium of both sides, with the variation minimum that when rotating shaft 21 is rotated the rotation commentaries on classics is refused, and to reduce the vibration that is produced.
And, divide first blade 43 of first pressing chamber 31 when first compression set 40 comprises along with the rotation of first roller 42 according to the radially advance and retreat of first pressing chamber 31 and with first leaf spring 44 of first blade 43 to the pressurization of first roller, 42 sides.
And, divide when second compression set 50 comprises along with the rotation of second roller 52 according to the radially advance and retreat of second pressing chamber 32 second pressing chamber 32, surface of contact can be slided second blade 53 supported and the 3rd blade 54 and with second leaf spring 55 of second blade 53 to the pressurization of second roller, 52 sides.Therefore, second pressing chamber 32 is divided by the relative little top with width of big relatively bottom second blade 53 of width the 3rd blade 54.And the 3rd blade 54 retrains it by the blade control gear 70 by the change compression volume or constraint relief is controlled the 3rd blade 54 advance and retreat.The concrete structure of blade control gear 70, the back will be described.
And, as shown in Figure 6,, second blade 53 is comprised from its upper front end extending portion 53a that prolong, that be used to cover the 3rd blade 54 front ends for the outer surface of preceding end in contact second roller 52 that prevents the 3rd blade 54.Therefore, the front end of second blade 53 has the width up and down corresponding to second roller, 52 height, so have only the outer surface of preceding end in contact second roller 52 of second blade 53.In addition, the front end of the 3rd blade 54 is for the extending portion 53a rear end of being close to second blade 53 and keep its state and have width up and down corresponding to extending portion 53a rear end.This is for the outer surface that makes second roller 52 in compression process all is contacted with second blade, 53 front ends with extending portion 53a equably, prevents the heavy wear of second roller, 52 outer surfaces thus.And, in the process for the change of controlling capacity to 54 execution constraints of the 3rd blade or constraint relief the front end of the 3rd blade 54 can not be contacted with second roller 52, thereby prevent the generation of impact noise.
And as shown in Figure 4, the advance and retreat direction length (A) of extending portion 53a is less than the maximum advance and retreat distances (L) of second blade 53.This be for when the 3rd blade 54 by the state of blade control gear 70 constraint down during rotation second roller 53, second pressing chamber 32 compressed repeatedly and dally.Promptly, rotate in the process of second roller 52 when second blade 53 and enter second pressing chamber 32 to greatest extent when inner, extending portion 53a rear end breaks away from blade engagement groove 56 fully, thereby make second roller 52 carry out the idle running of partial section, and make extending portion 53a when blade engagement groove 56 enters when second roller 52 rotates to be as shown in Figure 5 state, finish the division of second pressing chamber 32 and can realize compressed action between remaining area.That is, when second roller 52 rotates a circle under the 3rd blade 54 restrained conditions, dally and compress rotation between remaining area at partial section.
The advance and retreat direction length (A) of extending portion 53a is preferably about the maximum advance and retreat distance 40-60% of (L) of second blade 53.When extending portion 53a length is long,, thereby make the 3rd blade 54 not have necessity of existence because extending portion 53a rear end is always for to enter in the state of blade engagement groove 56; When extending portion 53a length is too short, be difficult to control the compression volume of caused second pressing chamber of extending portion 53a length in fact.
As Fig. 2 and shown in Figure 4, first and second main body 33,34 is formed for first and second suction port 61,62 to first and second pressing chamber 31,32 inner inflow gas respectively, connects first and second suction pipe 15,16 on these suction ports 61,62 respectively.First and second suction pipe 15,16 is to be sucked pipe arrangement 14 branches and formed by the refrigeration agent that prolongs from liquid-storage container 13 as shown in Figure 1.And, form first exhaust port 63 and second exhaust port 64 respectively in top first flange 36 and bottom second flange 37, be used to discharge at the pressurized gas of each pressing chamber 31,32.Therefore, seal container 10 inside be by will keeping high pressure conditions by the pressurized gas that first and second exhaust port 63,64 is discharged when compressor is started, and the pressurized gas of seal container 10 inside is directed into the outside by the discharge pipe arrangement 12 that is arranged at seal container 10 tops.
As shown in Figure 1, blade control gear 70 comprises the cylinder 71 that is arranged at the 3rd blade 54 rear end side and is arranged in the cylinder 71 and by the 3rd blade 54 advance and retreat directions piston 72 advance and retreat, that be connected in the 3rd blade 54 rear ends.And blade control gear 70 also comprises: be connected in the first pressure regulation tube 73a of cylinder 71 rear ends, be used to form the first passage 73 that is connected with cylinder 71 inside; The second pressure regulation tube 74a that forms and be connected with the first pressure regulation tube 73a from discharging pipe arrangement 12 branches is used to form the second channel 74 that is communicated with compressor discharge side and first passage 73; The 3rd pressure regulation tube 75a that forms and be connected with the first pressure regulation tube 73a from refrigeration agent suction pipe arrangement 14 branches is used to form the third channel 75 that is communicated with compressor suction side and first passage 73; Be arranged on the changeable channel valve 76 of first, second, third pressure regulation tube 73a, 74a, 75a joint.Changeable channel valve 76 can be made of the common three-way valve by electric control signal control.
The following describes the working procedure of this capacity variable rotary compressor.
As shown in Figure 1, startup compressor under the state that is communicated with second channel 74 and first passage 73 by changeable channel valve 76, then the discharge side pressure in blade control gear 70 cylinders 71 acts on piston 72, makes its 3rd blade 54 that pressurizes.So the front end of the 3rd blade 54 is close to the extending portion 53a rear end of second blade 53.
And first blade 43 is by the pressurization of first leaf spring 44, so divide first pressing chamber 31 when advancing and retreat along with the rotation of first roller 42; Second blade 53 is by the pressurization of second leaf spring 55, so and divide second pressing chamber 32 the common advance and retreat of the 3rd blade 54 time.In addition, this moment since first pressing chamber 31 and second pressing chamber 32 all compress, thereby make the compression volume maximum.
As shown in Figure 3, startup compressor under the state that is communicated with third channel 75 and first passage 73 by changeable channel valve 76, then the suction side pressure in blade control gear 70 cylinders 71 acts on piston 72 and it is retreated, and the front end of the 3rd blade 54 is separated from the extending portion 53a rear end of second blade 53.That is, have only this moment second blade 53 to carry out the advance and retreat action, and the 3rd blade 54 is kept the state that rests on the rear by 70 constraints of blade control gear.So, producing insulating space between the extending portion 53a of second blade 53 and the front end of the 3rd blade 54, second pressing chamber, 32 sidepiece by stages produce idle running when 52 rotations of second roller, significantly reduce compression volume thus.At this moment, when the rotation of second roller 52, because of causing partial section to dally, the extending portion 53a of second blade 53 compresses rotation between remaining area in second pressing chamber, 32 sides.Therefore, when making compressor, can regulate between the compressing area and the idle running interval by regulating second blade, 53 extending portion 53a length (A), and can regulate compression volume thus.
And the present invention can make under first pressing chamber 31 state different with the volume of second pressing chamber 32 control blade control gear 70 control the compression work of second pressing chamber 32, thereby makes the excursion variation more of capacity.And, when in the time of these actions of control, controlling the do action of blade control gear 70, can make compression volume minimum to the variation more of maximum variable range.That is, if, then can make the excursion variation more of compression volume by to 54 execution constraints of the 3rd blade and constraint relief second pressing chamber, 32 sides being compressed and the action of dallying repeatedly repeatedly.
The schematic representation of the capacity variable rotary compressor that Fig. 7 is provided for the foundation second embodiment of the invention.Second embodiment has only the blade control type capacity variable rotary compressor of a pressing chamber.Compression set 100 comprises among second embodiment: the shell with a pressing chamber 101; The roller 103 that off-centre is rotated in pressing chamber 101 by the rotation of rotating shaft 102; Divide first blade 110 and second blade 120 pressing chamber 101, that can slide mutually and support according to radially advance and retreat time of roller 103.And, also comprise in order to control compression volume and second blade 120 to be retrained or the blade control gear 130 of constraint relief.
In second embodiment's kind,, first blade 110 is comprised from its upper front end extending portion 111 that prolong, that be used to cover second blade, 120 front ends in order to prevent the outer surface of second blade, 120 contact rollers 103.Therefore, the front end of first blade 110 has the width up and down corresponding to roller 103 height, so have only the outer surface of the front end contact roller 103 of first blade 110.In addition, the front end of second blade 120 has the width up and down corresponding to extending portion 111 rear ends for extending portion 111 rear ends of being close to first blade 110.And the length (A) of extending portion 111 advance and retreat directions is about 40～60% of first blade, 110 maximum advance and retreat distances.Second blade 53 among this blade 110,120 and above-mentioned first embodiment is identical with the structure of the 3rd blade 54, and its action effect is in fact also identical, specifies so omit it at this.
Second embodiment's variable capacity action can be regulated confinement time that second blade 120 is carried out and the time of removing constraint by the control of blade control gear 130 and realize.
In sum, according to capacity variable rotary compressor provided by the present invention, owing in the first pressing chamber compression work process, control the advance and retreat of second blade by the blade control gear, thus can regulate the compression rotation and the idle running of second pressing chamber; And, owing to regulate between the idle running interval and compressing area of second pressing chamber by the length of regulating the second blade extending portion, thus can also be than the excursion that enlarged compression volume in the past, even compression volume is changed will continuously, variation diversely.
Except that above-mentioned effect, the present invention is owing to second blade has in order to cover the extending portion that the 3rd blade front end prolongs, thereby can prevent three-vaned front end contact roller, and has thus and can prevent that the roller outer surface is by the effect of heavy wear.
Claims (11)
1. a capacity variable rotary compressor is characterized in that comprising: the shell with first and second pressing chamber of being distinguished mutually; Be separately positioned on first and second roller in described first and second pressing chamber; The time divide first blade of described first pressing chamber according to the radially advance and retreat of described first roller; The time divide second blade and the 3rd blade described second pressing chamber, that can slide mutually and support according to the radially advance and retreat of described second roller; Compression volume retrains described the 3rd blade or the blade control gear of constraint relief in order to control; And, the extending portion that prolongs up or down from the described second blade front end in order to cover described the 3rd blade front end; And,
When described second roller rotated under described the 3rd blade suffers restraints state, described extending portion made its advance and retreat direction length less than the maximum advance and retreat of described second blade distance for compression and the idle running of carrying out described second pressing chamber repeatedly.
2. capacity variable rotary compressor according to claim 1, the advance and retreat direction length that it is characterized in that described extending portion are 40～60% of the maximum advance and retreat of described second blade distance.
3. capacity variable rotary compressor according to claim 1 is characterized in that the outer surface of described second roller of preceding end in contact of described second blade, and has the width up and down corresponding to the described second roller height.
4. capacity variable rotary compressor according to claim 3 is characterized in that described three-vaned front end is close to the rear end of described extending portion, and has the width up and down corresponding to described extending portion rear end.
5. capacity variable rotary compressor according to claim 1 is characterized in that described blade control gear comprises: the cylinder that is arranged on the described shell of described the 3rd blade-side; Can advance and retreat and be arranged in the described cylinder and the piston that is connected with described the 3rd blade; The first passage that is connected with described cylinder internal; Connect described compressor and discharge the second channel of side and described first passage; The third channel that connects described compressor suction side and described first passage; Be arranged at described first, second, third passage and interconnect the changeable channel valve at place.
6. capacity variable rotary compressor according to claim 1 is characterized in that the width of described three-vaned width less than described second blade.
7. a capacity variable rotary compressor is characterized in that comprising: the shell with pressing chamber; Be arranged on the roller in the described pressing chamber; The time divide first blade and second blade described pressing chamber, that can slide mutually and support according to the radially advance and retreat of described roller; Compression volume retrains described second blade or the blade control gear of constraint relief in order to control; And, the extending portion that prolongs up or down from the described first blade front end for the front end that covers described second blade; And,
When described roller rotated under described second blade suffers restraints state, described extending portion was in order to compress repeatedly and idle running makes its advance and retreat direction length less than the maximum advance and retreat of described first blade distance.
8. capacity variable rotary compressor according to claim 7, the advance and retreat direction length that it is characterized in that described extending portion are 40～60% of the maximum advance and retreat of described first blade distance.
9. capacity variable rotary compressor according to claim 7 is characterized in that the outer surface of the described roller of preceding end in contact of described first blade, and has the width up and down corresponding to described roller height.
10. capacity variable rotary compressor according to claim 9 is characterized in that the front end of described second blade is close to the rear end of described extending portion, and has the width up and down corresponding to described extending portion rear end.
11. capacity variable rotary compressor according to claim 7 is characterized in that described blade control gear comprises: the cylinder that is arranged on the described shell of described second blade-side; Can advance and retreat and be arranged in the described cylinder and the piston that is connected with described second blade; The first passage that is connected with described cylinder internal; Connect described compressor and discharge the second channel of side and described first passage; The third channel that connects described compressor suction side and described first passage; Be arranged at described first, second, third passage and interconnect the changeable channel valve at place.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050085884A KR100780783B1 (en) | 2005-09-14 | 2005-09-14 | Variable capacity rotary compressor |
| KR1020050085884 | 2005-09-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1932294A CN1932294A (en) | 2007-03-21 |
| CN100404869C true CN100404869C (en) | 2008-07-23 |
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ID=37878275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101346243A Expired - Fee Related CN100404869C (en) | 2005-09-14 | 2005-12-13 | Variable capacity rotary compressor |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100780783B1 (en) |
| CN (1) | CN100404869C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101270542B1 (en) * | 2008-03-18 | 2013-06-03 | 삼성전자주식회사 | Variable capacity rotary compressor and air conditioning cycle having the same |
| CN110044100B (en) * | 2019-04-22 | 2021-03-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Refrigerating and heating system and refrigerating and heating device with same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0494495A (en) * | 1990-08-09 | 1992-03-26 | Matsushita Refrig Co Ltd | Rotary compressor |
| CN1467379A (en) * | 2002-07-09 | 2004-01-14 | ���ǵ�����ʽ���� | Variable capacity rotary compressor |
| KR20040021140A (en) * | 2002-09-02 | 2004-03-10 | 삼성전자주식회사 | Variable capacity rotary compressor |
| CN1517559A (en) * | 2003-01-06 | 2004-08-04 | 三星电子株式会社 | Variable capacitance rotary compressor |
| CN1521402A (en) * | 2003-02-14 | 2004-08-18 | ���ǵ�����ʽ���� | Variable capacity rotary compressor |
-
2005
- 2005-09-14 KR KR1020050085884A patent/KR100780783B1/en not_active IP Right Cessation
- 2005-12-13 CN CNB2005101346243A patent/CN100404869C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0494495A (en) * | 1990-08-09 | 1992-03-26 | Matsushita Refrig Co Ltd | Rotary compressor |
| CN1467379A (en) * | 2002-07-09 | 2004-01-14 | ���ǵ�����ʽ���� | Variable capacity rotary compressor |
| US6716007B2 (en) * | 2002-07-09 | 2004-04-06 | Samsung Electronics Co., Ltd. | Variable capacity rotary compressor |
| KR20040021140A (en) * | 2002-09-02 | 2004-03-10 | 삼성전자주식회사 | Variable capacity rotary compressor |
| CN1517559A (en) * | 2003-01-06 | 2004-08-04 | 三星电子株式会社 | Variable capacitance rotary compressor |
| CN1521402A (en) * | 2003-02-14 | 2004-08-18 | ���ǵ�����ʽ���� | Variable capacity rotary compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100780783B1 (en) | 2007-11-29 |
| KR20070031159A (en) | 2007-03-19 |
| CN1932294A (en) | 2007-03-21 |
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