CN102852793A - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- CN102852793A CN102852793A CN2012101294840A CN201210129484A CN102852793A CN 102852793 A CN102852793 A CN 102852793A CN 2012101294840 A CN2012101294840 A CN 2012101294840A CN 201210129484 A CN201210129484 A CN 201210129484A CN 102852793 A CN102852793 A CN 102852793A
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- Prior art keywords
- dividing plate
- bearing
- roller
- hardness
- bent axle
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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
- F04C23/008—Hermetic 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
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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
- Y10S417/902—Hermetically sealed motor pump unit
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
A rotary compressor can reduce abrasion resulted from baffle plate accompanied lubricity deterioration during low-speed operation and abrasion resulted from baffle plate accompanied lubricity deterioration caused by spatial volumetric difference respectively existing on a path where lubricating oil is supplied to a baffle plate and a path where the lubricating oil is supplied to a bearing in a low-cost way, and also can prevent lock and firing of the baffle plate. Heat treatment is performed for the baffle plate (9), so as to enable the baffle plate (9) to have a hardness difference in the way that the hardness of the baffle plate (9) is higher than the hardness of a main bearing (5) and a supplementary bearing (6). In this way, supply quantity of the lubricating oil is small, thereby reducing abrasion resulted from the baffle plate accompanied lubricity deterioration during low-speed operation when the supply of the lubricating oil to the baffle plate is later than the supply of the main and supplementary bearing, reducing abrasion resulted from supply delay of the lubricating oil to the baffle plate caused by the spatial volumetric difference respectively existing on the path where the lubricating oil is supplied to the baffle plate and the path where the lubricating oil is supplied to a bearing, and also preventing lock and firing of the baffle plate.
Description
Technical field
The present invention relates to employed rotary compressors such as refrigeration plant, aircondition and hot water supply apparatus.
Background technique
At rotary compressor, for example for the rotary compressor with two cylinders of aircondition, by upper and lower air cylinders, upper lower roller, metal (upper and dividing plate, dispose two cylinders at the upside that clips dividing plate and downside.And the eccentric part of the 180 degree phase places that stagger of bent axle is inserted into respectively in these two cylinders, and upper lower roller is embedded into respectively each eccentric part also can eccentric motion.In addition, become the blade of pressing chamber and suction chamber to be inserted in two cylinders the spatial separation that is respectively formed between cylinder and the roller, these blade pass are crossed force application mechanism and are crimped on the roller with being free to slide.And roller is rotational slide in cylinder, and thus, the rotary compressor compression is inhaled into the refrigeration agent of pressing chamber.
And, in the rotary compressor that has in this wise two cylinders, implement phosphatizing or nitrocarburizing processing on the surface of the dividing plate of dividing two pressing chambers, for run up, slip between the dividing plate that roller that high capacity when running occurs and this roller contact, realize the raising (for example, with reference to patent documentation 1) of wearability, lubricity.
In addition, in the rotary compressor with two cylinders, opposing side at dividing plate and roller is implemented phosphatizing, implement again withstand load, lubricant oil retentivity, the good molybdenum disulfide coating processing of Initial Consistency (initial conformability) thereon, thus, the fluctuating of covering baffle surface and concavo-convex, compensation machining accuracy, prevent from following the rotational slide of roller to cause sintering, the wearing and tearing (for example, with reference to patent documentation 2) of baffle surface.
In addition, in the rotary compressor with two cylinders, roller and rotation are installed, thus, implement Quenching Treatment for the bent axle that makes the roller rotational slide in the cylinder, make between the surface of major-minor bearing and produce difference of hardness, thus, when starting or liquid refund refrigeration agent foaming after the running etc., in the situation that the pasta of oily nest reduces, also can prevent sintering, the wearing and tearing (for example, with reference to patent documentation 3) of bent axle and major-minor bearing.
[prior art document]
[patent documentation 1] Japanese kokai publication hei 2-123294 communique (the 4th page of upper right hurdle the 14th～19 row)
[patent documentation 2] Japanese kokai publication hei 10-9168 communique ([0010] section, Fig. 1)
[patent documentation 3] TOHKEMY 2008-38787 communique ([0029] [0030] section, Fig. 3)
Present refrigeration plant carries popularizing of compressor by the frequency conversion that can freely control the running rotating speed, under the state that externally temperature difference of air and inner air is little, also can make compressor operation with low speed rotation, thus can implementation efficiency good refrigeration or heat.
In addition, in use, energy-conservation consciousness improves, with the refrigeration of refrigeration plant or the indoor setting temperature when heating set the temperature that the temperature with outside air approaches for and turn round, can save employed electric weight.
Therefore, in recent years, with low speed rotation the frequency of compressor operation is increased, have the tendency of the frequency increase of carrying out the interrupted startup of low speed rotation and stopping.
The rotation of the bent axle when rotary compressor passes through compressed refrigerant is supplied to lubricant oil from oily nest by the oil circuit suction lubricant oil that supplies that is arranged at bent axle.Lubricant oil to the feed path of dividing plate and lubricant oil on the feed path of bearing, the different space of volume that produces when being folded with respectively the assembling of compression mechanical part.Space in these spaces, that produce in the path of dividing plate supplying lubricating oil is compared with the space that produces in the path of bearing supplying lubricating oil, and volume is large.This is because on the dividing plate that is configured between the upper and lower air cylinders, can run through the hole of the eccentric part (diameter is larger than the main shaft part of bent axle) of bent axle when needing to form assembling.Therefore, during the startup of compressor, by the difference in volume in the space in these compression mechanical parts, lubricant oil is compared delay to the supply of dividing plate with the bearing side, and dividing plate is compared with bearing, and lubricity worsens relatively, has the tendency that wearing and tearing occur easily.
In addition, when continuing to make the low-speed running of bent axle low speed rotation, reduce by the amount for the lubricant oil of oil circuit suction that is arranged on the bent axle from oily nest, the delivery volume that the slide member of major-minor bearing, roller, blade and the dividing plate etc. of lubricant oil in the compression mechanical part is supplied with reduces.
In addition, in the device that the wearability that makes dividing plate by dividing plate being implemented surface treatment improves, surface-treated manufacturing procedure quantity is many, and long processing time, thereby causes cost to raise.
Summary of the invention
Technical task of the present invention is the wearing and tearing following lubricity to worsen to produce of the dividing plate in the time of can reducing low-speed running with the method for cheapness and follows lubricity to worsen and the wearing and tearing that produce at the dividing plate that difference in volume was caused in the space that lubricant oil exists respectively in to path that dividing plate is supplied with and lubricant oil to the path that bearing is supplied with, and can prevent blocking and sintering of dividing plate.
Rotary compressor of the present invention consists of as described below.That is, have compression mechanical part and the motor part that drives it in seal container, compression mechanical part has: the bent axle with a plurality of eccentric parts; The a plurality of cylinders that dispose accordingly with each eccentric part of bent axle; Be configured between a plurality of cylinders and by the dividing plate of these cylinder clampings; Dispose with being positioned at these cylinders and be inserted with respectively a plurality of rollers of each eccentric part of bent axle; Be inserted with bent axle and be configured in main bearing and the supplementary bearing at two ends of the structure of stacked cylinder and dividing plate; To reach a plurality of blades that the space that is surrounded by cylinder, supplementary bearing, dividing plate and roller is divided into respectively pressing chamber and these two spaces of suction chamber by the space that cylinder, main bearing, dividing plate and roller surround, rotation by bent axle makes roller in the interior sideway swivel of cylinder, repeatedly carry out thus suction and the compression of fluid, in this rotary compressor, dividing plate is implemented heat treatment, so that the high mode of hardness of the hardness ratio main bearing of this dividing plate and supplementary bearing has difference of hardness.
The effect of invention
In rotary compressor of the present invention, dividing plate is implemented heat treatment, so that the high mode of hardness of the hardness ratio main bearing of dividing plate and supplementary bearing has difference of hardness, follow lubricity to worsen and the wearing and tearing that produce thereby can reduce the few and lubricant oil of lubricant oil delivery volume with the method for cheapness to the supply of the dividing plate dividing plate during than the slow low-speed running of major-minor bearing, and the lubricant oil of following that the difference in volume in the space that lubricant oil exists respectively in to path that dividing plate is supplied with and lubricant oil to the path that bearing is supplied with causes postpone the wearing and tearing that produce to the supply of dividing plate.Thus, can prevent blocking and sintering of dividing plate, and can improve reliability.
Description of drawings
Fig. 1 is the integrally-built longitudinal section of the rotary compressor of expression embodiments of the present invention 1.
Fig. 2 is the figure of assembling sequence of compression mechanical part of the rotary compressor of expression embodiments of the present invention 1.
Fig. 3 is the figure of assembling sequence of compression mechanical part of the rotary compressor of expression embodiments of the present invention 1.
Fig. 4 is the figure of assembling sequence of compression mechanical part of the rotary compressor of expression embodiments of the present invention 1.
Fig. 5 is the figure of assembling sequence of compression mechanical part of the rotary compressor of expression embodiments of the present invention 1.
Fig. 6 is the figure of assembling sequence of compression mechanical part of the rotary compressor of expression embodiments of the present invention 1.
Fig. 7 is the figure of assembling sequence of compression mechanical part of the rotary compressor of expression embodiments of the present invention 1.
Fig. 8 is the figure of fuel supply path of the rotary compressor of expression embodiments of the present invention 1.
Fig. 9 is the amplification details drawing of the key position of Fig. 8.
Figure 10 is the longitudinal section of compression mechanical part of the rotary compressor of expression embodiments of the present invention 1.
Figure 11 is the action specification figure of compression mechanical part of the rotary compressor of embodiments of the present invention 2.
Figure 12 is the figure with the slide area of the slide member of the compression mechanical part of the rotary compressor of shadow representation embodiments of the present invention 2, the slide area of Figure 12 (a) expression roller, and Figure 12 (b) expression dividing plate is with respect to the slide area of roller.
Figure 13 is the figure with the slide area of the slide member of the compression mechanical part of the rotary compressor of shadow representation embodiments of the present invention 2, the slide area of Figure 13 (a) expression blade, Figure 13 (b) expression dividing plate or major-minor bearing are with respect to the slide area of blade.
Figure 14 is the longitudinal section of compression mechanical part of the rotary compressor of expression embodiments of the present invention 2.
Figure 15 is the longitudinal section of key position of the comparative example of expression rotary compressor.
Figure 16 is the longitudinal section of key position of the comparative example of expression rotary compressor.
The explanation of reference character
1 seal container, 2 stators, 3 rotors, 4 bent axles, 4a main shaft part, 4b countershaft section, 4c main shaft side eccentric part, axial region in the middle of the 4d countershaft side eccentric part, 4e, 5 main bearings, 5a, 7a, 9b bolt hole, 6 supplementary bearings, 7 upper cylinders, 8 lower cylinders, 9 dividing plates, 10, the upper roller of 10A, 11, the 11A lower roller, 12, the 12A upper blade, 13,13A lower blade, 14,15 bolts, 16,17,18,19 oil supply holes, 30 oily nests, 31,32 force application mechanisms, 41 suction pipes, 42 discharge tubes, 100 compression mechanical parts, 200 motor part, A, B, B1, B2 space, C1, C2, D1, D2, E path.
Embodiment
As mentioned above, present refrigeration plant can freely be controlled the running rotating speed because popularizing frequency conversion lift-launch compressor.Therefore, in present refrigeration plant, in the little scope of the temperature difference of inner air and outside air, also can turn round with low speed rotation, can implement expeditiously cooling and heating thus.
In addition, in present refrigeration plant, in the actual running of using, the temperature difference of inner air and outside air is little, the little low speed rotation zone of the required ability of compressor turn round during long.Therefore, the index of the energy consumption efficiency of refrigeration plant is energy consumption efficient COP except adopt the refrigeration that adopted specified in the past with heating specified efficient mean value, also adopt a year energy consumption efficiency APF, this year energy consumption efficiency APF is specified except freezing, also considered corresponding refrigeration, the efficient when heating the compressor low speed rotation in (middle refrigeration, centre heat) of the situation with partial load in period that the weathers such as spring, autumn are more stable etc. the warm thermal rating, and the energy consumption efficiency when refrigeration plant uses by reality is assessed.
In addition, aspect utilizing, awareness of saving energy improves, for reduction makes power consumption, time set highly in refrigeration indoor setting temperature, when heating, set lowly and turn round, can save employed electric weight, therefore, compressor with the little scope of the difference of external air temperature in the frequency that turns round increase.Thus, compressor increases the running time in low speed rotation, and the frequency that starts during low speed rotation and stop to increase, and can carry out interrupted startup and stop.
Mode of execution 1
Below, the rotary compressor of detailed description embodiments of the present invention 1.In addition, here, enumerating the employed rotary compressor with two cylinders of aircondition is that example describes.Fig. 1 is the integrally-built longitudinal section of the rotary compressor of expression embodiments of the present invention 1.
The rotary compressor of embodiments of the present invention 1 is taken in as illustrated in fig. 1 compression mechanical part 100 and is driven the motor part 200 of this compression mechanical part 100 in seal container 1, store lubricant oil in seal container 1 bottom.Motor part is made of stator 2 and rotor 3, and embedding at rotor has bent axle 4.Bent axle 4 has main shaft part 4a and the 4b of countershaft section, and on these main shaft part 4a and the 4b of countershaft section, phase place 180 degree dislocation ground are formed with main shaft side eccentric part 4c and countershaft side eccentric part 4d.
Compression mechanical part 100 has dividing plate 9 and is configured in the upside that clips dividing plate 9 and upper cylinder 7 and the lower cylinder 8 of downside.Be inserted with bent axle 4 at these upper cylinders 7 and lower cylinder 8 and the dividing plate 9 that is configured between them, its main shaft side eccentric part 4c and countershaft side eccentric part 4d are configured in respectively in upper cylinder 7 and the lower cylinder 8.In addition, the middle axial region 4e between the main shaft side eccentric part 4c on the bent axle 4 and the countershaft side eccentric part 4d is configured in the dividing plate 9.In addition, in compression mechanical part 100, upper roller 10 and lower roller 11 are embedded into respectively main shaft side eccentric part 4c and countershaft side eccentric part 4d, and roller 10 and lower roller 11 can the eccentric rotary motions in upper cylinder 7 and lower cylinder 8 on these.And in compression mechanical part 100, upper blade 12 and lower blade 13 can insert upper cylinder 7 and lower cylinder 8 respectively with being free to slide.These up and down blade 12,13 force application mechanisms that consisted of by disc spring 31,32 be crimped on respectively all the time on upper roller 10 and the lower roller 11, and have be respectively formed at upper and lower air cylinders 7,8 and upper lower roller 10,11 between spatial separation become the function of pressing chamber and suction chamber.In addition, in compression mechanical part 100, stacked upper and lower air cylinders 7,8 and the two ends of the structure of dividing plate 9 dispose main bearing 5 and the supplementary bearing 6 of supporting crankshaft 4, these upper and lower air cylinders 7,8, dividing plate 9, main bearing 5 and supplementary bearing 6 by the different two kinds of bolts 14,15 of length by fastening integratedly.
In the rotary compressor of the embodiments of the present invention 1 that consist of like this, rotate by making rotor 3, and roller 10 and lower roller 11 are slided at the internal rotating of upper cylinder 7 and lower cylinder 8.Thus, refrigerant gas is inhaled into pressing chamber from suction pipe 41, and the refrigeration agent that is inhaled into pressing chamber is compressed.Compressed higher pressure refrigerant gas is discharged in the seal container 1, and is discharged to the outside of seal container 1 from discharge tube 42.
In the rotary compressor of embodiments of the present invention 1, dividing plate 9 is implemented heat treatment (Quenching Treatment), make the hardness ratio main bearing 5 of this dividing plate 9 and the hardness height of supplementary bearing 6.Like this, have difference of hardness by the hardness that makes dividing plate 9 in the high mode of hardness than main bearing 5 and supplementary bearing 6, thus, compare with supplementary bearing 6 with main bearing 5, can improve the wearability of dividing plate 9.
Thus, even in following situation, also can alleviate the wear extent of dividing plate 9, thus, can prevent blocking and sintering of dividing plate 9, and can improve reliability, above-mentioned situation is, the delivery volume of lubricant oil is few, to the upper lower roller 10 of compression mechanical part 100,11 with blade 12 up and down, 13 and the lubricant oil supplied with dividing plate 9 of major-minor bearing 5,6 to the supply of dividing plate 9 sides with compare delay to major-minor bearing 5,6 supply.
Like this, dividing plate 9 is implemented Quenching Treatment, compare the wearability that improves dividing plate 9 with major-minor bearing 5,6, so can suppress processing cost and alleviate the wear extent of dividing plate 9.
Below, describe for the assembling sequence of the compression mechanical part of the rotary compressor of embodiments of the present invention 1.Fig. 2 to Fig. 7 is the figure of assembling sequence of compression mechanical part of the rotary compressor of expression embodiments of the present invention 1.
(1) as shown in Figure 2, at first, by short bolt 15 fastening upper cylinder 7 and main bearings 5.Use many bolts 15.
(2) as shown in Figure 3, the main shaft part 4a with bent axle 4 inserts main bearing 5 from upper cylinder 7 sides.Then, make that roller 10 is outer to be embedded on the bent axle 4, make upper roller 10 by the outside according to the order of the 4b of countershaft section, countershaft side eccentric part 4d and middle axial region 4e, thereby be assembled into main shaft side eccentric part 4c.At this moment, upper blade 12 (Fig. 1) is packed into upper cylinder 7.
(3) as shown in Figure 4, will improve by heat treatment (Quenching Treatment) the outer bent axles 4 that are embedded in of dividing plate 9 of wearability, and make dividing plate 9 by the outside according to the order of the 4b of countershaft section and countershaft side eccentric part 4d, thereby in the middle of being assembled on the axial region 4e.Under this state, as shown by arrows, owing to make dividing plate 9 mobile vertically in the mode in the outside by countershaft side eccentric part 4d, so the center of the center of dividing plate 9 and upper cylinder 7 is inconsistent.
(4) as shown in Figure 5, dividing plate 9 is moved along the direction perpendicular to axle, upper cylinder 7 is set with center-aligned ground.This be because, make the aligned in position of bolt hole 5a of bolt hole 7a, the main bearing 5 of the bolt hole 9b that is arranged on the dividing plate 9, upper cylinder 7, bolt described later is passed.
(5) as shown in Figure 6, make the lower roller 11 outer bent axles 4 that are embedded in, and by the 4b of countershaft section, be assembled on the countershaft side eccentric part 4d.
(6) in addition, by short bolt 15 (many) fixedly lower cylinder 8 and supplementary bearing 6, and with lower blade 13 (Fig. 1) lower cylinder 8 of packing into.Make its outer 4b of countershaft section that is embedded in bent axle 4.
(7) as shown in Figure 7, the outside of lower cylinder 8 from supplementary bearing 6 is fixed on the upper cylinder 7 by long bolt 14 (many) in the mode that dividing plate 9 is clipped in the middle.In addition, side by side the outside of upper cylinder 7 from main bearing 5 is fixed on the lower cylinder 8 by long bolt 14 (many) in the mode that dividing plate 9 is clipped in the middle.
Below, the fuel supply path of the rotary compressor of embodiments of the present invention 1 is described.Fig. 8 is the figure of fuel supply path of the rotary compressor of expression embodiments of the present invention 1.Fig. 9 is the amplification details drawing of the key position of Fig. 8.Figure 10 is the longitudinal section of compression mechanical part of the rotary compressor of expression embodiments of the present invention 1.
Because compression mechanical part 100 is assembled (1)～(7) as described like that, so in compression mechanical part 100, between dividing plate 9 and middle axial region 4e, produce space A (Fig. 7).In addition, producing space B (below be referred to as " B1 ") between upper roller 10, main shaft side eccentric part 4c and the main bearing 5.In addition, similarly also producing space B (below be referred to as " B2 ") between lower roller 11, countershaft side eccentric part 4d and the supplementary bearing 6.At this moment, the volume of the volume ratio space B 1 of space A, B2 is large.This is because on the dividing plate 9 that is configured between the upper and lower air cylinders 7,8, when the assembling procedure of described (3), needs form the hole of passing through for the outside of the countershaft side eccentric part 4d (diameter is larger than the middle axial region 4e of bent axle 4) of bent axle 4.
Lubricant oil is implemented as follows to the supply of the compression mechanical part 100 of the rotary compressor of embodiments of the present invention 1, namely, pass through as illustrated in fig. 8 the oil circuit that supplies of bent axle 4 from the oily nest 30 of compressor bottom, implementing by the centrifugal fuel feeding that is undertaken by the rotation of bent axle 4 from oil supply hole 16,17,18,19.Therefore, the rotational speed of fuel delivery and bent axle 4 or rotating speed proportionally become many.When low speed rotation turned round, lubricant oil tailed off to the delivery volume in the compression mechanical part 100.
Up and down roller 10,11 and major- minor bearing 5,6 fuel feeding implement in the following way, namely, pass through path C1, C2 from the oil supply hole 16,17 that is in major- minor bearing 5,6 inside extremely as shown in Figure 10 such as Fig. 8, or from the oil supply hole 18 that is in upper lower roller 10,11 inside, 19 by path D1, D2, respectively inflow space B1, B2 and carry out fuel feeding.Carry out fuel feeding from the oil supply hole 18,19 of upper lower roller 10,11 inside by path E, F inflow space A to dividing plate 9 and upper lower roller 10,11 fuel feeding.Therefore, in space A and space B 1, B2, until fill it up with lubricant oil, for dividing plate 9 and major- minor bearing 5,6 supplying lubricating oil difficults.That is to say that space A and space B 1, B2 become and hinder lubricant oil to dividing plate 9 and major- minor bearing 5,6 reasons of supplying with.
As mentioned above, since the space A that produces between dividing plate 9 and the middle axial region 4e than upper lower roller 10,11 and major- minor bearing 5,6, major-minor axle side eccentric part 4c, 4d between the space B 1, the B2 that produce large, so when compressor start, lubricant oil to the supply of dividing plate 9 than slow to major- minor bearing 5,6 supply.Therefore, in the situation of carrying out interrupted startup and stopping in the few low speed rotation running of the delivery volume of lubricant oil, dividing plate 9 relatively worsens with respect to major- minor bearing 5,6 lubricities and weares and teares easily.
But, in the rotary compressor of embodiments of the present invention 1, owing to used the dividing plate 9 that has improved wearability by heat treatment (Quenching Treatment), so even the space A that produces between dividing plate 9 and the middle axial region 4e is large, also be difficult to wear and tear.Like this, the rotary compressor of embodiments of the present invention 1 is effective especially for the device with following compression mechanical part, and above-mentioned compressor structure section should become the large space A of the reason that hinders the lubricant oil supply midway having of lubricant oil feed path.Make space A become large, the assembling performance of compression mechanical part is become easily, and be effective for the compactness of compression mechanical part.And in such compressor, the durability of dividing plate 9 improves, and realizes long lifetime.
At the countershaft lateral deviation core 4d that ignores bent axle 4 and suppose in the internal diameter of dividing plate 9 situation identical with the external diameter of the middle axial region 4e of bent axle 4, in order under the discontiguous state of external diameter of the internal diameter of dividing plate 9 and middle axial region 4e, to make bent axle 4 rotations, must carry out high-precision centering and assemble.
In addition, as the method that the space A between the middle axial region 4e of the internal diameter that makes dividing plate 9 for example and bent axle 4 diminishes, can consider dividing plate 9 is divided into two-part and becomes to split structure.Be described by Figure 15 and Figure 16.Figure 15 and Figure 16 are the longitudinal sections of key position of the comparative example of expression rotary compressor.Have following method, that is, such as Figure 15 and shown in Figure 16, dividing plate 9 two is divided into splits dividing plate 9L, 9R two-part, and folder advances upper and lower air cylinders 7,8 the middle axial region 4e of bent axle 4 assembles.But, even the assembling method that enforcement is undertaken by this separation, zoarium, in order can not need high-precision centering and the internal diameter of dividing plate 9 and the external diameter of middle axial region 4e to be assembled contiguously, also need between the external diameter of the internal diameter of dividing plate 9 and middle axial region 4e, play (gap) be set.
As the rotary compressor of embodiments of the present invention 1, if the internal diameter of dividing plate 9 is larger than the external diameter of the countershaft lateral deviation core 4d of bent axle 4, consequently, it is large that space A becomes, dividing plate 9 is outer to be embedded in bent axle 4 and to make its outside of passing through countershaft lateral deviation core 4d (Fig. 4 and Fig. 5) but can make, and does not assemble contiguously with the middle axial region 4e of bent axle 4 and becomes easy.
Generally speaking, as the feature of the rotary compressor with a plurality of cylinders, the distance between bearings that can enumerate main bearing and supplementary bearing is long, and in the running, it is large that the bending angle of crankshaft eccentric section becomes.For alleviating this situation, expectation makes distance between bearings as far as possible little.
As shown in Figure 3, make the roller 10 outer 4b of countershaft section that are embedded in, for making it in the axial direction not by arriving main shaft lateral deviation core 4c with tangling, the axial length of axial region 4e is longer than the axial length of upper roller 10 in the middle of must making, and has passed through countershaft side eccentric part 4d upper roller 10 afterwards and can move along the direction perpendicular to axle.In the rotary compressor of embodiments of the present invention 1, do not change upper lower roller 10,11 axle direction length, guarantee the axial length of the middle axial region 4e corresponding with it, in addition, the axial length of main shaft side eccentric part 4c and countershaft side eccentric part 4d is shortened in the direction of dividing plate 9 sides.Thus, although produce aforesaid space B 1, B2 (Fig. 7), can suppress the entire length of bent axle 4, the axial length of axial region 4e is relatively elongated with respect to the axial length of upper roller 10 in the middle of can making.Therefore, can realize the assembling of compact compression mechanical part 100.
As the additive method that distance between bearings is diminished, the axial length of axial region 4e is that the axial length of roller 10 is long on the axial Thickness Ratio of dividing plate 9 in the middle of considering to make, and the while is thin as much as possible.In addition, for realizing miniaturization, resource-saving, the expectation dividing plate is thin as much as possible.But when making the dividing plate attenuation, the differential pressure distortion that the deviation in the moment of the pressure rise of the pressing chamber of the both sides of dividing plate causes becomes large, and dividing plate becomes and contacts with roller or blade easily.
As corresponding therewith technology, in the past, be any one enforcement surface treatment of dividing plate, roller, major-minor bearing and bent axle to slide member as described above, or surface hardness is improved, wearability is improved come wear prevention and sintering.
This dividing plate is implemented surface-treated operation is, at first, and for raising becomes the adhesive quality of the medicament of cover coat, ungrease treatment and the cleaning of removing the oil on raw material surface.Then, improve for making with the compatibility of medicament, implement the base treatment such as phosphate coating formation, clean again, afterwards, implement the cover coat such as molybdenum disulfide and form and process, make its drying, finish processing.Like this, surface-treated manufacturing procedure number is many, and long processing time, thereby causes cost to raise.
And the rotary compressor of embodiments of the present invention 1 is implemented Quenching Treatment and wearability is improved dividing plate 9.Quenching Treatment can be processed by heat treatment and the cooling of High Temperature Furnaces, and therefore required operation specific surface is processed and lacked, can be with short time, the low-cost wearability that improves.
In addition, here, dividing plate 9 and major- minor bearing 5,6 have difference of hardness, and the hardness of the hardness ratio major- minor bearing 5,6 of dividing plate 9 is high, thus the wearing and tearing that alleviate dividing plate 9, but also can alleviate upper lower roller 10,11 and up and down blade 12,13 wearing and tearing.By the method in mode of execution 2 these situations of explanation.
Mode of execution 2
In rotary compressor, as described below, the slide area of roller and blade is less than the slide area of bearing and dividing plate.Therefore, as roller and blade, adopt hardness ratio bearing and the high material of dividing plate.Therefore, for alleviating the wearing and tearing of roller and blade, the hardness of having implemented heat treated dividing plate in aforesaid mode of execution 1 must be lower than the hardness of roller and blade.In the mode of hardness according to the order raising of roller and blade＞dividing plate＞bearing, dividing plate is implemented heat treatment, the wearing and tearing that can alleviate thus roller and blade, and the wearing and tearing that can alleviate dividing plate.
A → b of Figure 11 → c → d is the action specification figure of compression mechanical part of the rotary compressor of embodiments of the present invention 2, is the figure of the situation in the compression mechanical part in the process that rotates a circle of the upper lower roller of expression.As shown in figure 11, upper lower roller 10A, 11A carry out the eccentric rotary motion and slide in upper and lower air cylinders 7,8 between dividing plate and major-minor bearing, up and down blade 12A, 13A to-and-fro motion and slip.
Figure 12 is the figure with the slide area of the slide member in the compression mechanical part of the rotary compressor of shadow representation embodiments of the present invention 2, the slide area of lower roller in Figure 12 (a) expression, the dividing plate that lower roller whenever rotates a circle in Figure 12 (b) expression is with respect to the slide area of upper lower roller.Shown in Figure 12 (a), (b), the slide area of the dividing plate 9 that whenever rotates a circle with upper lower roller 10A, 11A is compared, and the slide area of upper lower roller 10A, 11A is less.Thus, upper lower roller 10A, 11A compare more concentrated area slip with dividing plate 9.
Figure 13 is the figure with the slide area of the slide member in the compression mechanical part of the rotary compressor of shadow representation embodiments of the present invention 2, Figure 13 (a) expression is the slide area of blade up and down, and Figure 13 (b) expression dividing plate and major-minor bearing are with respect to the slide area of blade up and down.Shown in Figure 13 (a), (b), compare with dividing plate 9 and major- minor bearing 5,6 slide area, the slide area of blade 12A, 13A is less up and down.Thus, blade 12A, 13A compare more concentrated area slip with dividing plate 9 with major- minor bearing 5,6 up and down.
That is, upper lower roller 10A, 11A compare with dividing plate 9, major- minor bearing 5,6 with up and down blade 12A, 13A, in situation about having with dividing plate 9 and major- minor bearing 5,6 identical hardness, wearing and tearing and sintering occur easily.At lower roller 10A, 11A on the hardness ratio that makes dividing plate 9 with in the situation that the hardness of blade 12A, 13A is high up and down, upper lower roller 10A, 11A and blade 12A, 13A wear and tear first than dividing plate 9 up and down.
Figure 14 is the longitudinal section of compression mechanical part of the rotary compressor of expression embodiments of the present invention 2.The rotary compressor of embodiments of the present invention 2 reaches up and down blade 12A, 13A enforcement heat treatment (Quenching Treatment) to dividing plate 9, upper lower roller 10A, 11A as illustrated in fig. 14, has difference of hardness with hardness according to the mode that upper lower roller reaches the up and down order raising of blade＞dividing plate＞major-minor bearing.
Generally speaking, bearing of compressor often uses gray cast iron or sintering from usability, processability and cost face.As the example of its hardness, often use the material about HRB65～110 (suitable with HRC0～30).In addition, blade and roller often use the cast iron of the high stainless steel of hardness or NiCrMo.As the example of its hardness, often use the material about HRC45～70.Therefore, the hardness of dividing plate preferably sets into the scope of HRC30～45.
Here, with major- minor bearing 5,6, dividing plate 9, upper lower roller 10A, 11A and up and down the hardness of blade 12A, 13A set following scope for.
Major-minor bearing: RB HRB65～110 (suitable with HRC0～30)
Dividing plate: RHC HRC30～40
Upper lower roller: RHC HRC45～55
Blade up and down: RHC HRC55～70
As mentioned above, in the rotary compressor of embodiments of the present invention 2, to dividing plate 9, upper lower roller 10A, 11A and up and down blade 12A, 13A enforcement heat treatment (Quenching Treatment), with hardness according to upper lower roller and up and down the mode that improves of the order of blade＞dividing plate＞major-minor bearing have difference of hardness, thereby can alleviate the wearing and tearing of the dividing plate that causes with respect to major- minor bearing 5,6 slip.In addition, can alleviate upper lower roller 10A, 11A and the up and down wearing and tearing of blade 12A, 13A that the slip with respect to dividing plate 9 causes.
Claims (3)
1. a rotary compressor has the motor part of compression mechanical part and this compression mechanical part of driving in seal container,
Described compression mechanical part has:
Bent axle with a plurality of eccentric parts;
The a plurality of cylinders that dispose accordingly with each eccentric part of described bent axle;
Be configured between described a plurality of cylinder and by the dividing plate of these cylinder clampings;
A plurality of rollers, described a plurality of rollers dispose in the mode that is positioned at these cylinders, and each eccentric part of described bent axle inserts respectively described a plurality of roller;
Main bearing and supplementary bearing insert described bent axle in described main bearing and supplementary bearing, and described main bearing and supplementary bearing are configured in the two ends of the structure of stacked described cylinder and described dividing plate;
A plurality of blades, described a plurality of blade will be reached the space that is surrounded by described cylinder, described supplementary bearing, described dividing plate and described roller and be divided into respectively pressing chamber and these two spaces of suction chamber by the space that described cylinder, described main bearing, described dividing plate and described roller surround
Rotation by described bent axle makes described roller in the interior sideway swivel of described cylinder, repeatedly carries out thus suction and the compression of fluid, it is characterized in that,
Described dividing plate is implemented heat treatment, so that the high mode of hardness of the described main bearing of the hardness ratio of this dividing plate and described supplementary bearing has difference of hardness.
2. rotary compressor as claimed in claim 1 is characterized in that, described roller and described blade is implemented heat treatment, so that the high mode of hardness of the described dividing plate of hardness ratio of these rollers and blade has difference of hardness.
3. rotary compressor as claimed in claim 1 or 2, it is characterized in that, be formed on described bent axle and the space (A) that is embedded in outward between the described dividing plate of described bent axle larger than the space (B) that is formed on respectively between each described roller and described main bearing and supplementary bearing and each the described eccentric part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011142196A JP5535137B2 (en) | 2011-06-27 | 2011-06-27 | Rotary compressor |
| JP2011-142196 | 2011-06-27 |
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| Publication Number | Publication Date |
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| CN102852793A true CN102852793A (en) | 2013-01-02 |
| CN102852793B CN102852793B (en) | 2015-06-03 |
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| Country | Link |
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| JP (1) | JP5535137B2 (en) |
| KR (1) | KR101275956B1 (en) |
| CN (1) | CN102852793B (en) |
| CZ (1) | CZ306595B6 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257545A (en) * | 2015-11-04 | 2016-01-20 | 安徽美芝精密制造有限公司 | Rotary compressor |
| CN108105097A (en) * | 2018-01-08 | 2018-06-01 | 珠海凌达压缩机有限公司 | Pump body structure and compressor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013057946A1 (en) * | 2011-10-18 | 2013-04-25 | パナソニック株式会社 | Rotary compressor having two cylinders |
| JP6605847B2 (en) * | 2015-06-05 | 2019-11-13 | ライフロボティクス株式会社 | Robot arm mechanism |
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| CN108105097B (en) * | 2018-01-08 | 2020-03-24 | 珠海凌达压缩机有限公司 | Pump body structure and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20130001669A (en) | 2013-01-04 |
| CN102852793B (en) | 2015-06-03 |
| CZ306595B6 (en) | 2017-03-22 |
| JP2013007372A (en) | 2013-01-10 |
| JP5535137B2 (en) | 2014-07-02 |
| CZ2012230A3 (en) | 2013-01-09 |
| KR101275956B1 (en) | 2013-06-17 |
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