CN102852793B - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- CN102852793B CN102852793B CN201210129484.0A CN201210129484A CN102852793B CN 102852793 B CN102852793 B CN 102852793B CN 201210129484 A CN201210129484 A CN 201210129484A CN 102852793 B CN102852793 B CN 102852793B
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- dividing plate
- roller
- bearing
- hardness
- bent axle
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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
- 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 the rotary compressor that such as refrigeration plant, aircondition and hot water supply apparatus etc. use.
Background technique
At rotary compressor, have in the rotary compressor of two cylinders such as aircondition, by upper and lower air cylinders, upper lower roller, metal (upper and dividing plate, configure two cylinders in the upper side and lower side clipping dividing plate.And the eccentric part of the 180 degree of phase places that stagger of bent axle is inserted in these two cylinders respectively, upper lower roller is embedded into each eccentric part respectively and can eccentric motion.In addition, the blade space be respectively formed between cylinder and roller being separated into pressing chamber and suction chamber can slidably be inserted in two cylinders, and these blades are crimped on roller by force application mechanism.And roller is rotational slide in cylinder, thus, rotary compressor compression is inhaled into the refrigeration agent of pressing chamber.
And, in the rotary compressor in this wise with two cylinders, phosphatizing or nitrocarburizing process is implemented on the surface of the dividing plate of division two pressing chambers, for running up, high capacity running time the roller that occurs and the dividing plate that contacts of this roller between slip, realize the raising (for example, referring to patent documentation 1) of wearability, lubricity.
In addition, in the rotary compressor with two cylinders, phosphatizing is implemented at the opposing side of dividing plate and roller, implement the molybdenum disulfide coating process that load resistance, lubricant oil retentivity, Initial Consistency (initial conformability) are excellent more thereon, thus, cover the fluctuating of baffle surface and concavo-convex, compensate machining accuracy, prevent the rotational slide with roller from causing sintering, the wearing and tearing (for example, referring to patent documentation 2) of baffle surface.
In addition, in the rotary compressor with two cylinders, be provided with roller and rotate, thus, Quenching Treatment implemented by the bent axle for the roller rotational slide made in cylinder, make to produce difference of hardness between the surface of major-minor bearing, thus, by start time or liquid refund the refrigeration agent foaming etc. after running, when oily nest pasta reduce, also the sintering of bent axle and major-minor bearing, wearing and tearing (for example, referring to patent documentation 3) can be prevented.
[prior art document]
[patent documentation 1] Japanese Unexamined Patent Publication 2-123294 publication (the 4th page of upper right hurdle 14th ~ 19 row)
[patent documentation 2] Japanese Unexamined Patent Publication 10-9168 publication ([0010] section, Fig. 1)
[patent documentation 3] Japanese Unexamined Patent Publication 2008-38787 publication ([0029] [0030] section, Fig. 3)
Present refrigeration plant carries the universal of compressor by the frequency conversion that freely can control running rotating speed, under the state that the temperature difference of outside air and inner air is little, also compressor operation can be made with low speed rotation, thus can the good refrigeration of implementation efficiency or heat.
In addition, in use, energy-conservation consciousness improves, and the indoor setting temperature by the refrigeration of refrigeration plant or when heating is set to the temperature close with the temperature of outside air and operates, and can save used electricity.
Therefore, in recent years, with low speed rotation, the frequency of compressor operation is increased, the tendency that the frequency that there is interrupted startup and the stopping carrying out low speed rotation increases.
Rotary compressor, by the rotation of bent axle during compressed refrigerant, is supplied to lubricant oil from oily nest by being arranged at the oil passage suction lubricant oil of bent axle.At lubricant oil to the feed path of dividing plate and lubricant oil on the feed path of bearing, the space that the volume produced when being folded with the assembling of compression mechanical part is respectively different.In these spaces, to the space that produces in the path of dividing plate supply lubricant oil with supply compared with the space that produces in the path of lubricant oil to bearing, volume is large.This is because, be configured on the dividing plate between upper and lower air cylinders, needing the hole can running through the eccentric part (diameter is larger than the main shaft part of bent axle) of bent axle when forming assembling.Therefore, during the startup of compressor, by the difference in volume in the space in these compression mechanical parts, lubricant oil is to supply delay compared with bearing side of dividing plate, and dividing plate is compared with bearing, and lubricity is relative deteriorated, there is the tendency that wearing and tearing easily occur.
In addition, when continuing the low-speed running making bent axle low speed rotation, reduce from the amount of oily nest by the lubricant oil being arranged on the oil passage suction bent axle, the delivery volume reduction that lubricant oil supply to the slide member of major-minor bearing, roller, blade and the dividing plate etc. in compression mechanical part.
In addition, in the device making the wearability of dividing plate improve by implementing surface treatment to dividing plate, surface-treated manufacturing procedure quantity is many, and long processing time, thus cause cost to raise.
Summary of the invention
Technical task of the present invention can worsen the wearing and tearing produced and the wearing and tearing produced with lubricity worsens at the dividing plate that the difference in volume in the space that lubricant oil exists in the path that bearing supplies respectively to the path that dividing plate supplies and lubricant oil causes with the dividing plate during method of cheapness reduction low-speed running with lubricity, and can prevent blocking and sintering of dividing plate.
Rotary compressor of the present invention is formed as described below.That is, in seal container, have compression mechanical part and drive its motor part, compression mechanical part has: the bent axle with multiple eccentric part; The multiple cylinders configured accordingly with each eccentric part of bent axle; Be configured in the dividing plate clamped between multiple cylinder and by these cylinders; Configure with being positioned at these cylinders and be inserted with multiple rollers of each eccentric part of bent axle respectively; Be inserted with bent axle and be configured in main bearing and the supplementary bearing at the two ends of the structure of stacked cylinder and dividing plate; The space surrounded by cylinder, main bearing, dividing plate and roller and the space that surrounded by cylinder, supplementary bearing, dividing plate and roller are divided into respectively multiple blades in pressing chamber and these two spaces of suction chamber, roller sideway swivel in cylinder is made by the rotation of bent axle, repeatedly carry out suction and the compression of fluid thus, in this rotary compressor, heat treatment is implemented to dividing plate, in the mode that the hardness of the hardness ratio main bearing and supplementary bearing that make this dividing plate is high, there is difference of hardness.
The effect of invention
In rotary compressor of the present invention, heat treatment is implemented to dividing plate, in the mode that the hardness of the hardness ratio main bearing and supplementary bearing that make dividing plate is high, there is difference of hardness, thus can reduce with the method for cheapness the wearing and tearing that the few and lubricant oil of lubricant oil delivery volume produces to the dividing plate during low-speed running that the supply of dividing plate is slower than major-minor bearing with lubricity worsens, and the adjoint lubricant oil caused at the difference in volume in the space that lubricant oil exists in the path that bearing supply respectively to the path that dividing plate supply and lubricant oil is to the wearing and tearing of the supply delay generation of dividing plate.Thereby, it is possible to prevent blocking and sintering of dividing plate, and reliability can be improved.
Accompanying drawing explanation
Fig. 1 is the integrally-built longitudinal section of the rotary compressor representing embodiments of the present invention 1.
Fig. 2 is the figure of the assembling sequence of the compression mechanical part of the rotary compressor representing embodiments of the present invention 1.
Fig. 3 is the figure of the assembling sequence of the compression mechanical part of the rotary compressor representing embodiments of the present invention 1.
Fig. 4 is the figure of the assembling sequence of the compression mechanical part of the rotary compressor representing embodiments of the present invention 1.
Fig. 5 is the figure of the assembling sequence of the compression mechanical part of the rotary compressor representing embodiments of the present invention 1.
Fig. 6 is the figure of the assembling sequence of the compression mechanical part of the rotary compressor representing embodiments of the present invention 1.
Fig. 7 is the figure of the assembling sequence of the compression mechanical part of the rotary compressor representing embodiments of the present invention 1.
Fig. 8 is the figure of the fuel supply path of the rotary compressor representing 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 the compression mechanical part of the rotary compressor representing embodiments of the present invention 1.
Figure 11 is the action specification figure of the compression mechanical part of the rotary compressor of embodiments of the present invention 2.
Figure 12 is the figure of the slide area of the slide member of the compression mechanical part of the rotary compressor using shadow representation embodiments of the present invention 2, Figure 12 (a) represents the slide area of roller, and Figure 12 (b) represents the slide area of dividing plate relative to roller.
Figure 13 is the figure of the slide area of the slide member of the compression mechanical part of the rotary compressor using shadow representation embodiments of the present invention 2, Figure 13 (a) represents the slide area of blade, and Figure 13 (b) represents dividing plate or the major-minor bearing slide area relative to blade.
Figure 14 is the longitudinal section of the compression mechanical part of the rotary compressor representing embodiments of the present invention 2.
Figure 15 is the longitudinal section of the key position of the comparative example representing rotary compressor.
Figure 16 is the longitudinal section of the key position of the comparative example representing rotary compressor.
The explanation of reference character
1 seal container, 2 stators, 3 rotors, 4 bent axles, 4a main shaft part, 4b countershaft portion, 4c main shaft side eccentric part, 4d countershaft side eccentric part, 4e intermediate shaft portion, 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, 11A lower roller, 12, 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 freely can control because compressor is carried in universal frequency conversion the rotating speed that operates.Therefore, in present refrigeration plant, in the scope that the temperature difference of inner air and outside air is little, also can operate with low speed rotation, cooling and heating can be implemented expeditiously thus.
In addition, in present refrigeration plant, in the actual running used, the temperature difference of inner air and outside air is little, long during the low speed rotation region that the ability needed for compressor is little carries out operating.Therefore, the index of the energy consumption efficiency of refrigeration plant is specified and heat specified efficiency mean value and energy consumption efficiency COP except adopting the refrigeration adopted in the past, also adopt year energy consumption efficiency APF, this year energy consumption efficiency APF also contemplates the efficiency when refrigeration corresponding with the situation of partial load in the weather such as spring, autumn more stable period etc., the compressor low speed rotation heated in (middle freeze, centre heat) except specified, the warm thermal rating that freezes, and refrigeration plant is assessed by energy consumption efficiency during reality use.
In addition, in utilizing, awareness of saving energy improves, power consumption is made for reducing, indoor setting temperature being set high when freezing, setting when heating low and operating, used electricity can be saved, therefore, the frequency that compressor operates in the scope little with the difference of external air temperature increases.Thus, compressor increases the running time in low speed rotation, and the frequency carrying out during low speed rotation starting and stopping increases, and can carry out interrupted startup and stop.
Mode of execution 1
Below, the rotary compressor of embodiments of the present invention 1 is described in detail.In addition, here, enumerating the rotary compressor with two cylinders that aircondition uses for example is described.Fig. 1 is the integrally-built longitudinal section of the rotary compressor representing embodiments of the present invention 1.
The rotary compressor of embodiments of the present invention 1 is accommodated with compression mechanical part 100 as illustrated in fig. 1 and drives the motor part 200 of this compression mechanical part 100 in seal container 1, bottom seal container 1, store lubricant oil.Motor part is made up of stator 2 and rotor 3, and rotor is embedded with bent axle 4.Bent axle 4 has main shaft part 4a and countershaft portion 4b, and on these main shaft part 4a and countershaft portion 4b, 180 degree, phase place dislocation ground is 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 upper cylinder 7 and the lower cylinder 8 of the upper side and lower side clipping dividing plate 9.These upper cylinders 7 and lower cylinder 8 and configuration dividing plate 9 are between which inserted with bent axle 4, and its main shaft side eccentric part 4c and countershaft side eccentric part 4d is configured in upper cylinder 7 and lower cylinder 8 respectively.In addition, the intermediate shaft portion 4e between the main shaft side eccentric part 4c on bent axle 4 and countershaft side eccentric part 4d is configured in dividing plate 9.In addition, in compression mechanical part 100, upper roller 10 and lower roller 11 are embedded into main shaft side eccentric part 4c and countershaft side eccentric part 4d respectively, and on these, roller 10 and lower roller 11 can eccentric rotational motion in upper cylinder 7 and lower cylinder 8.And in compression mechanical part 100, upper blade 12 and lower blade 13 slidably can insert upper cylinder 7 and lower cylinder 8 respectively.These upper and lower blades 12,13 are crimped on upper roller 10 and lower roller 11 all the time respectively by the force application mechanism 31,32 be made up of disc spring, and have the function space be respectively formed between upper and lower air cylinders 7,8 and upper lower roller 10,11 being separated into pressing chamber and suction chamber.In addition, in compression mechanical part 100, the two ends of the structure of stacked upper and lower air cylinders 7,8 and dividing plate 9 are configured with 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 formed like this, by making rotor 3 rotate, 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 being inhaled into pressing chamber is compressed.Be discharged in seal container 1 by the higher pressure refrigerant gas compressed, and be discharged to the outside of seal container 1 from discharge tube 42.
In the rotary compressor of embodiments of the present invention 1, heat treatment (Quenching Treatment) is implemented to dividing plate 9, make the hardness of the hardness ratio main bearing 5 of this dividing plate 9 and supplementary bearing 6 high.Like this, by making the hardness of dividing plate 9 have difference of hardness in the mode higher than the hardness of main bearing 5 and supplementary bearing 6, thus, comparing with supplementary bearing 6 with main bearing 5, the wearability of dividing plate 9 can be improved.
Thus, even if in the case where there, also the wear extent of dividing plate 9 can be alleviated, 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, and the lubricant oil supplied to upper lower roller 10,11 and the upper and lower blade 12,13 of compression mechanical part 100 and major-minor bearing 5,6 and dividing plate 9 is to supply delay compared with the supply to major-minor bearing 5,6 of dividing plate 9 side.
Like this, Quenching Treatment is implemented to dividing plate 9, improve the wearability of dividing plate 9 compared with major-minor bearing 5,6, so can processing cost be suppressed and alleviate the wear extent of dividing plate 9.
Below, the assembling sequence for the compression mechanical part of the rotary compressor of embodiments of the present invention 1 is described.Fig. 2 to Fig. 7 is the figure of the assembling sequence of the compression mechanical part of the rotary compressor representing embodiments of the present invention 1.
(1) as shown in Figure 2, first, by the fastening upper cylinder 7 of short bolt 15 and main bearing 5.Use many bolts 15.
(2) as shown in Figure 3, the main shaft part 4a of bent axle 4 is inserted main bearing 5 from upper cylinder 7 side.Then, make roller 10 fitted on bent axle 4, make upper roller 10 by outside according to the order of countershaft portion 4b, countershaft side eccentric part 4d and intermediate shaft portion 4e, thus be assembled into main shaft side eccentric part 4c.Now, upper blade 12 (Fig. 1) is loaded upper cylinder 7.
(3) as shown in Figure 4, be embedded in bent axle 4 by outside the dividing plate 9 that improve wearability by heat treatment (Quenching Treatment), make dividing plate 9 by outside according to the order of countershaft portion 4b and countershaft side eccentric part 4d, thus be assembled on intermediate shaft portion 4e.In this condition, as shown by arrows, owing to making dividing plate 9 move 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 and center set alignedly.This is because, make to be arranged on the aligned in position of bolt hole 9b, the bolt hole 7a of upper cylinder 7 on dividing plate 9, the bolt hole 5a of main bearing 5, bolt described later is passed.
(5) as shown in Figure 6, make to be embedded in bent axle 4 outside lower roller 11, and by countershaft portion 4b, be assembled on the eccentric part 4d of countershaft side.
(6) in addition, by the fixing lower cylinder 8 of short bolt 15 (many) and supplementary bearing 6, and lower blade 13 (Fig. 1) is loaded lower cylinder 8.Make its outer countershaft portion 4b being embedded in bent axle 4.
(7) as shown in Figure 7, the outside of lower cylinder 8 from supplementary bearing 6 is fixed on upper cylinder 7 by long bolt 14 (many) in the mode be clipped in the middle by dividing plate 9.In addition, side by side the outside of upper cylinder 7 from main bearing 5 is fixed on lower cylinder 8 by long bolt 14 (many) in the mode be clipped in the middle by dividing plate 9.
Below, the fuel supply path of the rotary compressor of embodiments of the present invention 1 is described.Fig. 8 is the figure of the fuel supply path of the rotary compressor representing 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 the compression mechanical part of the rotary compressor representing embodiments of the present invention 1.
Due to compression mechanical part 100 as described in assemble (1) ~ (7), so in compression mechanical part 100, between dividing plate 9 and intermediate shaft portion 4e, produce space A (Fig. 7).In addition, at upper roller 10, produce space B (hereinafter referred to as " B1 ") between main shaft side eccentric part 4c and main bearing 5.In addition, similarly at lower roller 11, also produce space B (hereinafter referred to as " B2 ") between countershaft side eccentric part 4d and supplementary bearing 6.Now, the volume of the volume ratio space B 1 of space A, B2 is large.This is because, being configured on the dividing plate 9 between upper and lower air cylinders 7,8, when the assembling procedure of described (3), need to form the hole supplying the outside of the countershaft side eccentric part 4d (diameter is larger than the intermediate shaft portion 4e of bent axle 4) of bent axle 4 to pass through.
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 the oil passage of bent axle 4 as illustrated in fig. 8 from the oily nest 30 bottom compressor, implemented by the centrifugal fuel feeding 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 operates, lubricant oil tails off to the delivery volume in compression mechanical part 100.
The fuel feeding of roller 10,11 and major-minor bearing 5,6 is implemented in the following way up and down, namely, if Fig. 8 is extremely as shown in Figure 10 from being in the oil supply hole 16,17 of major-minor bearing 5,6 inside by path C1, C2, or from being in the oil supply hole 18,19 of upper lower roller 10,11 inside by path D1, D2, inflow space B1, B2 and carry out fuel feeding respectively.Fuel feeding to dividing plate 9 and upper lower roller 10,11 carries out fuel feeding from the oil supply hole 18,19 of upper lower roller 10,11 inside by path E, F inflow space A.Therefore, in space A and space B 1, B2, until fill it up with lubricant oil, lubricant oil is supplied for dividing plate 9 and major-minor bearing 5,6 and becomes difficulty.That is, space A and space B 1, B2 become the reason hindering lubricant oil to supply to dividing plate 9 and major-minor bearing 5,6.
As mentioned above, due to the space A that produces between dividing plate 9 and intermediate shaft portion 4e than upper lower roller 10,11 and major-minor bearing 5,6, the space B 1 that produces between major-minor axle side eccentric part 4c, 4d, B2 be large, so when compressor start, lubricant oil is slower than the supply to major-minor bearing 5,6 to the supply of dividing plate 9.Therefore, in the low speed rotation running that the delivery volume of lubricant oil is few carry out interrupted startup and stopping, dividing plate 9 is relative deteriorated relative to major-minor bearing 5,6 lubricity and easily wear and tear.
But, in the rotary compressor of embodiments of the present invention 1, owing to employing the dividing plate 9 that improve wearability by heat treatment (Quenching Treatment), even if so the space A produced between dividing plate 9 and intermediate shaft portion 4e is large, be also 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 compression mechanism portion has the large space A that should become the reason hindering lubricant oil supply in the midway of lubricant oil feed path.Make space A become large, make the assembling performance of compression mechanical part become easy as described later, 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.
When ignore bent axle 4 countershaft lateral deviation core 4d and when supposing that the internal diameter of dividing plate 9 is identical with the external diameter of the intermediate shaft portion 4e of bent axle 4, in order to make bent axle 4 rotate under the internal diameter of dividing plate 9 and the discontiguous state of external diameter of intermediate shaft portion 4e, must high-precision centering be carried out assemble.
In addition, as the method that the space A made between the intermediate shaft portion 4e of the internal diameter of such as dividing plate 9 and bent axle 4 diminishes, dividing plate 9 can be considered to be divided into two-part and to become and split structure.Be described by Figure 15 and Figure 16.Figure 15 and Figure 16 is the longitudinal section of the key position of the comparative example representing rotary compressor.There is following method, that is, as shown in Figure 15 and Figure 16, dividing plate 9 two is divided into and splits dividing plate 9L, 9R two-part, and the intermediate shaft portion 4e pressed from both sides into the bent axle 4 between upper and lower air cylinders 7,8 assembles.But, even if implement the assembling method undertaken by this separation, zoarium, in order to high-precision centering can not be needed and do not assemble with not making the outer diameter contact of the internal diameter of dividing plate 9 and intermediate shaft portion 4e, also need to arrange play (gap) between the internal diameter and the external diameter of intermediate shaft portion 4e of dividing plate 9.
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, space A becomes large, but can make to be embedded in bent axle 4 outside dividing plate 9 and make it by the outside (Fig. 4 and Fig. 5) of countershaft lateral deviation core 4d, not carrying out assembling contiguously with the intermediate shaft portion 4e of bent axle 4 and become easy.
Generally, as the feature of rotary compressor with multiple cylinder, the distance between bearings can enumerating main bearing and supplementary bearing is long, and in the running, the bending angle in crankshaft eccentric portion becomes large.For alleviating this situation, expect to make distance between bearings as far as possible little.
As shown in Figure 3, make outside roller 10, to be embedded in countershaft portion 4b, for making it in the axial direction not with tangling by arriving main shaft lateral deviation core 4c, the axial length of intermediate shaft portion 4e must be made longer than the axial length of upper roller 10, and the upper roller 10 that have passed after the eccentric part 4d of countershaft side can move along the direction perpendicular to axle.In the rotary compressor of embodiments of the present invention 1, do not change the axle direction length of upper lower roller 10,11, guarantee the axial length of the intermediate shaft portion 4e corresponding with it, in addition, the axial length of main shaft side eccentric part 4c and countershaft side eccentric part 4d is made to shorten on the direction of dividing plate 9 side as illustrated in fig. 6.Thus, although produce aforesaid space B 1, B2 (Fig. 7), the entire length of bent axle 4 can be suppressed, the axial length of intermediate shaft portion 4e can be made relatively elongated relative to the axial length of upper roller 10.Therefore, it is possible to realize the assembling of compact compression mechanical part 100.
The additive method diminished as making distance between bearings, considers to make the axial length of roller 10 on the Thickness Ratio of the axis of the axial length of intermediate shaft portion 4e and dividing plate 9 long, simultaneously thin as much as possible.In addition, for realizing miniaturization, resource-saving, expect that dividing plate is thin as much as possible.But when making dividing plate thinning, the differential pressure distortion that the deviation in the moment of the pressure increase of the pressing chamber of the both sides of dividing plate causes becomes large, dividing plate becomes easily and roller or blade contact.
As technology correspondingly, in the past, as described above surface treatment was implemented to any one of slide member and dividing plate, roller, major-minor bearing and bent axle, or surface hardness is improved, and wearability was improved and prevents wearing and tearing and sinter.
Implementing surface-treated operation to this dividing plate is, first, for improving the adhesive quality becoming the medicament of cover coat, carries out ungrease treatment and the cleaning of the oil removing raw material surface.Then, for making to improve with the compatibility of medicament, implementing the base treatment such as phosphate coating formation, then cleaning, afterwards, implement the cover coat formation processings such as molybdenum disulfide, make it dry, complete process.Like this, surface-treated manufacturing procedure number is many, and long processing time, thus cause cost to raise.
And the rotary compressor of embodiments of the present invention 1 is implemented Quenching Treatment to dividing plate 9 and makes wearability improve.Quenching Treatment can be processed by the heat treatment of High Temperature Furnaces and cooling, and therefore required operation specific surface process is few, can improve wearability with short time, low cost.
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 alleviates the wearing and tearing of dividing plate 9, but also can alleviate the wearing and tearing of upper lower roller 10,11 and upper and lower blade 12,13.By mode of execution 2, the method in this situation is described.
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 implementing heat treated dividing plate in aforesaid mode of execution 1 must be lower than the hardness of roller and blade.In the mode that hardness improves according to the order of roller and blade > dividing plate > bearing, heat treatment is implemented to dividing plate, the wearing and tearing of roller and blade can be alleviated thus, and the wearing and tearing of dividing plate can be alleviated.
A → b → c → the d of Figure 11 is the action specification figure of the 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 representing that lower roller rotates a circle.As shown in figure 11, upper lower roller 10A, 11A carry out eccentric rotational motion and slide between dividing plate and major-minor bearing in upper and lower air cylinders 7,8, and upper and lower blade 12A, 13A to-and-fro motion is also slided.
Figure 12 is the figure of the slide area with the slide member in the compression mechanical part of the rotary compressor of shadow representation embodiments of the present invention 2, Figure 12 (a) represents the slide area of upper lower roller, and the dividing plate that the upper lower roller of Figure 12 (b) expression often rotates a circle is relative to the slide area of upper lower roller.As shown in Figure 12 (a), (b), compared with the slide area of the dividing plate 9 often rotated a circle with upper lower roller 10A, 11A, the slide area of upper lower roller 10A, 11A is less.Thus, upper lower roller 10A, 11A compared with dividing plate 9 more concentrated area slide.
Figure 13 is the figure of the slide area with the slide member in the compression mechanical part of the rotary compressor of shadow representation embodiments of the present invention 2, Figure 13 (a) represents the slide area of upper and lower blade, and Figure 13 (b) represents dividing plate and the major-minor bearing slide area relative to upper and lower blade.As shown in Figure 13 (a), (b), as compared to the slide area of dividing plate 9 with major-minor bearing 5,6, the slide area of upper and lower blade 12A, 13A is less.Thus, upper and lower blade 12A, 13A compare more concentrated area with dividing plate 9 with major-minor bearing 5,6 and slide.
That is, upper lower roller 10A, 11A and up and down blade 12A, 13A, compared with dividing plate 9, major-minor bearing 5,6, when having with dividing plate 9 and major-minor bearing 5,6 identical hardness, wearing and tearing and sintering easily occur.In the hardness ratio making dividing plate 9, the hardness of lower roller 10A, 11A and upper and lower blade 12A, 13A is high, upper lower roller 10A, 11A and upper and lower blade 12A, 13A first wear and tear than dividing plate 9.
Figure 14 is the longitudinal section of the compression mechanical part of the rotary compressor representing embodiments of the present invention 2.The rotary compressor of embodiments of the present invention 2 implements heat treatment (Quenching Treatment) to dividing plate 9, upper lower roller 10A, 11A and upper and lower blade 12A, 13A as illustrated in fig. 14, has difference of hardness with hardness according to the mode of upper lower roller and the order raising of blade > dividing plate > major-minor bearing up and down.
Generally, bearing of compressor, from usability, processability and cost face, often uses gray cast iron or sintering.As the example of its hardness, often use the material of left and right, HRB65 ~ 110 (suitable with HRC0 ~ 30).In addition, blade and roller often use the cast iron of stainless steel that hardness is high or NiCrMo.As the example of its hardness, often use the material about HRC45 ~ 70.Therefore, the hardness of dividing plate is preferably set to the scope of HRC30 ~ 45.
Here, by major-minor bearing 5,6, dividing plate 9, upper lower roller 10A, 11A and blade 12A, 13A up and down hardness be set to following scope.
Major-minor bearing: RB HRB65 ~ 110 (suitable with HRC0 ~ 30)
Dividing plate: RHC HRC30 ~ 40
Upper lower roller: RHC HRC45 ~ 55
Upper and lower blade: RHC HRC55 ~ 70
As mentioned above, in the rotary compressor of embodiments of the present invention 2, heat treatment (Quenching Treatment) is implemented to dividing plate 9, upper lower roller 10A, 11A and upper and lower blade 12A, 13A, according to the mode of upper lower roller and the order raising of blade > dividing plate > major-minor bearing up and down, there is difference of hardness with hardness, thus the wearing and tearing of the dividing plate caused relative to the slip of major-minor bearing 5,6 can be alleviated.In addition, the wearing and tearing of upper lower roller 10A, the 11A caused relative to the slip of dividing plate 9 and upper and lower blade 12A, 13A can be alleviated.
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:
There is the bent axle of multiple eccentric part;
The multiple cylinders configured accordingly with each eccentric part of described bent axle;
Be configured in the dividing plate clamped between described multiple cylinder and by these cylinders;
Multiple roller, described multiple roller configures in the mode being positioned at these cylinders, and each eccentric part of described bent axle inserts described multiple roller respectively;
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;
Multiple blade, the space surrounded by described cylinder, described main bearing, described dividing plate and described roller and the space that surrounded by described cylinder, described supplementary bearing, described dividing plate and described roller are divided into pressing chamber and these two spaces of suction chamber by described multiple blade respectively
Make the sideway swivel in described cylinder of described roller by the rotation of described bent axle, repeatedly carry out suction and the compression of fluid thus, it is characterized in that,
Heat treatment is implemented to described dividing plate, to make the high mode of the hardness of main bearing and described supplementary bearing described in the hardness ratio of this dividing plate, there is difference of hardness.
2. rotary compressor as claimed in claim 1, is characterized in that, implements heat treatment, have difference of hardness to make the high mode of the hardness of dividing plate described in the hardness ratio of these rollers and blade to described roller and described blade.
3. rotary compressor as claimed in claim 1 or 2, it is characterized in that, it is larger than the space (B1) be formed between upper roller and described main bearing and the eccentric part corresponding with described upper roller to be formed in space (A) between described bent axle and the described dividing plate being embedded in described bent axle outward, and than the space (B2) be formed between lower roller and described supplementary bearing and the eccentric part corresponding with described lower roller greatly.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-142196 | 2011-06-27 | ||
| JP2011142196A JP5535137B2 (en) | 2011-06-27 | 2011-06-27 | Rotary compressor |
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| Publication Number | Publication Date |
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| CN102852793A CN102852793A (en) | 2013-01-02 |
| CN102852793B true CN102852793B (en) | 2015-06-03 |
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| JP (1) | JP5535137B2 (en) |
| KR (1) | KR101275956B1 (en) |
| CN (1) | CN102852793B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2770212B1 (en) * | 2011-10-18 | 2021-12-01 | Panasonic Corporation | 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 |
| CN105257545A (en) * | 2015-11-04 | 2016-01-20 | 安徽美芝精密制造有限公司 | Rotary compressor |
| CN108105097B (en) * | 2018-01-08 | 2020-03-24 | 珠海凌达压缩机有限公司 | Pump body structure and compressor |
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- 2012-04-03 CZ CZ2012-230A patent/CZ306595B6/en unknown
- 2012-04-06 KR KR1020120035806A patent/KR101275956B1/en active IP Right Grant
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Also Published As
| Publication number | Publication date |
|---|---|
| CZ2012230A3 (en) | 2013-01-09 |
| KR101275956B1 (en) | 2013-06-17 |
| JP2013007372A (en) | 2013-01-10 |
| JP5535137B2 (en) | 2014-07-02 |
| CZ306595B6 (en) | 2017-03-22 |
| CN102852793A (en) | 2013-01-02 |
| KR20130001669A (en) | 2013-01-04 |
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