CN100453807C - Compressor - Google Patents
Compressor Download PDFInfo
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- CN100453807C CN100453807C CNB2004800334609A CN200480033460A CN100453807C CN 100453807 C CN100453807 C CN 100453807C CN B2004800334609 A CNB2004800334609 A CN B2004800334609A CN 200480033460 A CN200480033460 A CN 200480033460A CN 100453807 C CN100453807 C CN 100453807C
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- Prior art keywords
- sleeve pipe
- oil
- compressor
- axle
- rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0223—Lubrication characterised by the compressor type
- F04B39/023—Hermetic compressors
- F04B39/0261—Hermetic compressors with an auxiliary oil pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0223—Lubrication characterised by the compressor type
- F04B39/023—Hermetic compressors
- F04B39/0238—Hermetic compressors with oil distribution channels
- F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
An oil pump is provided with helical grooves 142 and 142' carved on the outer periphery of the shaft 125, with an approximately cup-shaped sleeve 146 loosely fit to the outer periphery of the shaft such that the bottom part of the shaft and the bottom plate of the above-mentioned sleeve are engaged in relatively rotatable manner, and with a rotation suppression means for suppressing the rotation of the sleeve. Thereby, even at the low rotation rate operation, oil is raised reliably to compressor unit, offering a highly reliable compressor operation.
Description
Technical field
The present invention relates to have the compressor that improves fluid supply apparatus.
Background technique
In recent years, for adaptation improves the requirement of grobal environment, the energy-conservation motion of household refrigerator was quickened.Therefore, coolant compressor is manufactured to inverter style, and further reduction rotational speed has been done very big effort.For this low rotational speed compressor, utilization obtains sufficient fuel feeding and becomes difficult such as the centrifugal pump of the prior art of describing in " country of the translation of international patent application 2002-519589 announces (in Japan) ".
For the compressor of prior art, replace traditional centrifugal pump, there is the compressor that disposes viscosity pump, utilize viscosity pump, can obtain stable suction capactity with littler power.
Hereinafter, with reference to accompanying drawing, will the compressor of above-mentioned prior art be described.
Fig. 7 is the sectional view of major component of the compressor of above-mentioned prior art.With reference to Fig. 7, seal container 1 is storage oil 2 in its bottom.Motor 5 comprise stator 6 with coil and within it portion comprise the rotor 7 of permanent magnet.On the periphery of the quill shaft 11 in being arranged on compressor unit 10, sleeve pipe 12 is engaged and fixes, so that it and axle 11 whole rotations.In addition, rotor 7 is inserted in and is fixed on the periphery of sleeve pipe 12.And the bottom of sleeve pipe 12 is immersed in the oil 2.
The operation of Gou Zao prior art compressor is as follows as mentioned above.
When motor 5 energisings, its rotor 7 rotations.Therefore, be engaged and be fixed to the also rotation of axle 11 that rotor 7 forms individual unit.Utilize this rotation of axle 11, compressor unit 10 is carried out the compressor action of its regulation.And when the spinning movement that utilizes axle 11, during sleeve pipe 12 rotations, the inwall of sleeve pipe 12 becomes with respect to the outer wall rotation of bar 20.Therefore, oil 2 is subjected to rotating force, and in the oil groove that forms between the inwall of screw thread 20 ' that the periphery of bar 20 forms and sleeve pipe 12, utilizes the viscosity that exists in the relative rotation between sleeve pipe 12 and the bar 20, and oily 2 are pulled.Or rather, because the relative rotation of sleeve pipe 12, because on the bar surface and the viscosity of the oil reservoir in the above-mentioned screw thread 20 ', the oil reservoir of contact sleeve pipe 12 internal surfaces provides rotating force, this then rotating force is along the oil in the helix traction grooved, so that make its rotation and move upward.By the horizontal hole in the axle 11, and by the upright opening in the central axial region of axle 11, the oil of sleeve pipe 12 moved upward inside is towards the upwards suction of top hollow space of axle 11.This oily 2 are not to be caused by centrifugal force to the moving upward of the top of axle 11 hollow space, but it is owing to utilize the action that rotates up motion of the power of viscosity traction, thereby can realize with the stable suction oil of the less low rotational speed of centrifugal force.
Yet in the configuration of the above-mentioned example of prior art, structure is to be kept and fixing rods 20 by the support 15 that wire is made.Therefore, when the dimensional accuracy of support 15 is low, good coaxial relation between the outer wall that can not keep bar 20 and the wall of sleeve pipe 12, bar 20 is under pressure on the some parts in the inwall somewhere of sleeve pipe 12, causes the contact of not expecting on sleeve pipe 12.Because big frictional force appears in this contact, support 15 is designed to be formed by elastic material in order to absorb.Yet, when contact force is big, wearing and tearing greatly appear between sleeve pipe 12 and bar 20, and the extraction ability drop perhaps produces abrasion particle, and these abrasion particles partly circulate at sliding movement with oil, and enter in the sliding movement part, in addition, also there is even locks the shortcoming of compressor unit in the operation of badly damaged compressor unit.
In addition, bar 20 needs mould, and this makes needs complex process during it is made, and forming spiral chute on its whole outer surface, thereby has the shortcoming that causes the compressor cost to rise.
Summary of the invention
The present invention plans to provide highly reliable and need not any obviously expensive compressor in it is made.
In order to solve the problems referred to above of prior art, the oil pump of compressor of the present invention is provided with: the spiral chute of spiral engraving or cutting on the periphery of above-mentioned axle; Link the approximate cup-shaped sleeve pipe of the periphery of above-mentioned axle loosely.The bottom of above-mentioned axle and the bottom surface of above-mentioned sleeve pipe rotate freely with them that mode is connected, and the rotation restraining device of the rotation that is used to suppress above-mentioned sleeve pipe is provided.The sleeve pipe that utilizes rotation to suppress, produced rotate relatively with respect to spiral fluted poor.Then, related with the rotation of axle, the oil in the interior week of contact sleeve pipe is pulled owing to its viscosity.Therefore, oil rotation and rising, thus realize feedback oil.Therefore, effectively viscosity pump can utilize very a spot of parts to form.Mode is connected because the bottom of above-mentioned axle and the bottom surface of above-mentioned sleeve pipe rotate freely with them, and the relative position of axle and sleeve pipe is restricted, and has caused reducing the chance that the torsion action between sleeve pipe and the axle occurs.
According to compressor unit of the present invention, having obtained to provide the effect of the technology of compressors with high mechanical reliability.
According to a first aspect of the invention, can provide compressor, wherein: comprise therein in the seal container of oil, be provided with: be included in the stator that holds in the above-mentioned seal container and the motor of rotor; With by above-mentioned electric motor driven compressor unit; And the above-mentioned compressor unit comprises: the axle that vertically extends and rotatablely move; And oil pump, this oil pump is formed on the lower end of above-mentioned axle and is connected to above-mentioned oil; Above-mentioned oil pump comprises: the spiral chute that spiral is provided with on the periphery of above-mentioned axle; And cup-shaped sleeve, this cup-shaped sleeve is connected on the peripheral end of above-mentioned axle loosely, so that it covers above-mentioned spiral fluted lower end and is connected to the bottom of above-mentioned axle in mode without spin; Rotation restraining device with the rotation that is used to suppress above-mentioned sleeve pipe.
According to a second aspect of the invention, can obtain to provide technology of compressors effect according to above-mentioned feature, wherein: above-mentioned rotation restraining device is the support that remains between said stator and the above-mentioned sleeve pipe, and support is fixed to said stator with above-mentioned sleeve pipe.
According to a third aspect of the invention we, can obtain providing the technology of compressors effect according to above-mentioned feature, wherein: above-mentioned rotation restraining device is formed in the alar part on the periphery of above-mentioned sleeve pipe, and this alar part produces viscous resistance with respect to oil.
According to a forth aspect of the invention, can obtain providing the technology of compressors effect according to above-mentioned feature, wherein: above-mentioned rotation restraining device is directly or indirectly to be fixed to the permanent magnet of above-mentioned sleeve pipe and above-mentioned seal container and to the parts of their magnetic actions.
According to a fifth aspect of the invention, can obtain to provide any one technology of compressors effect according to above-mentioned feature, wherein: above-mentioned axle has oilhole in the heart in its axle, this oilhole vertically extends, and be connected to axle and accept and allow slide therein sliding movement part between the parts that rotatablely move of axle, and described spiral fluted upper end is connected to the described oilhole that vertically extends.
According to a sixth aspect of the invention, can obtain providing any one technology of compressors effect according to above-mentioned feature, wherein: described sleeve pipe is formed by the global formation of synthetic resin.
According to a seventh aspect of the invention, can obtain providing any one technology of compressors effect according to above-mentioned feature, wherein: the above-mentioned compressor unit in above-mentioned seal container by elastic support.
According to an eighth aspect of the invention, can obtain providing any one technology of compressors effect according to above-mentioned feature, wherein: above-mentioned motor unit is by the frequency of okperation driving that comprises less than the frequency of power supply frequency.
Description of drawings
Fig. 1 is the vertical sectional view of the compressor of embodiment according to the present invention 1;
Fig. 2 is the vertical sectional view of a part of the compressor of embodiment according to the present invention 1;
Fig. 3 is the vertical sectional view of the compressor of embodiment according to the present invention 2;
Fig. 4 is the vertical sectional view of a part of the compressor of embodiment according to the present invention 2;
Fig. 5 is the vertical sectional view of the compressor of embodiment according to the present invention 3;
Fig. 6 is the vertical sectional view of a part of the compressor of embodiment according to the present invention 3;
Fig. 7 is the vertical sectional view of the part of prior art compressor.
Embodiment
Hereinafter, preferred embodiment according to compressor of the present invention is described with reference to the accompanying drawings.
＜example 1 〉
Fig. 1 is the sectional view of the compressor unit of embodiment according to the present invention 1; Fig. 2 is the sectional view according to the major component of same instance 1.
In Fig. 1 and Fig. 2, seal container 101 storage lubricant oil 102, and simultaneously, it is mounted with refrigerant gas 103.In this, refrigerant gas 103 is preferably as the R600a of hydrocarbon refrigerant, and oil 102 artificial oil preferably.In addition, can also be mineral oil or the polyatomic alcohol polybasic alcohol ether oil (polyol ether oil) compatible with above-mentioned refrigerant gas 103.
The lower end of spring 139 is engaged to the bottom of seal container 101, utilizes its upper end, spring 139 support stator 136 and the compressor unit 110 that constitutes with stator integral body; Thereby, this spring with respect to the bottom of seal container 101 and on the bottom of seal container 101 elastic support compressor unit 110.
Hereinafter, especially with reference to Fig. 2, with the structure of describing in detail as the oil pump 140 of feature of the present invention.
Lower part helical groove 142 is set at the periphery of the bottom of main shaft portion 120.In addition, top spiral chute 142 ' is set at the top of main shaft periphery.Upright opening 144 with respect to its eccentricity of central axis is arranged in this main shaft portion 120.
Oilhole, be lower horizontal hole 144 ' and upper level hole 144 "; in main shaft portion 120, be set to upright opening 144; oilhole is connected respectively to the outer surface of its main shaft portion 120 separately, and be positioned at respectively its sliding movement separately that on the bearing 116 of parts casing pipe 146 and top thereof location down, slides and partly locate.144 ' the upper end with lower part helical groove 142, lower horizontal hole is connected to upright opening 144; And upper level hole 144 " will be connected to the underpart of top spiral chute 142 ' along the upper end portion of the upright opening 144 of the center axial component of axle 120.
The degree of depth of approximate cup-shaped sleeve 146 can be held lower part helical groove 142, and this sleeve pipe 146 is made by the synthetic resin with anti-refrigeration agent and oil-resistant characteristic (the global formation thing of expectation PBT (terephthalic acid polybutylene (polybutylene terephthalate))).So-called approximate cup-shaped sleeve comprises such as cylindrical shape and Frusto-conical variant, and except that above-mentioned shape, can use to have the cup-shaped of quadric side.This sleeve pipe 146 has: the bolt fastening hole 150 (Fig. 2) that is provided with on lower surface; With the filler opening 152 that on side surface, is provided with; With from the skirt section 154 of base plate to lower process.In this, in another example, oil-feed 152 can be arranged on the base plate.Then, the gap between the lower, outer perimeter diameter of the internal diameter of sleeve pipe 146 and main shaft 120 is selected as on their diameter from 100 μ m to 500 μ m.
At the place, bottom of main shaft portion 120, by being arranged on the bolt fastening hole 150 on the base plate 146 ', bolt 160 is fixed to the threaded bottom of upright opening 144 with thread connecting mode, and packing ring 162 places therebetween.The bolt fastening hole 150 of base plate 146 ' is made the external diameter greater than the helical thread portion of bolt 160, and the head of bolt 160 is fixed to the base plate of sleeve pipe 146 loosely.Utilize this loose fixation arrangement, main shaft 120 rotations that are connected with bolt 160 freely join sleeve pipe 146 to.This bolt 160 has sealed the bottom of upright opening 144.Packing ring 162 forms (preferably such as the tetrafluoroethylene with self-lubricating property) by high abrasion resisting material, thereby sleeve pipe 146 is steadily rotated with respect to main shaft portion.
Below will the relevant operation of the compressor of the example of structure as mentioned above be described.
When from inverted rectifier (inverter) drive circuit unlatching stator 136, rotor 137 rotations, thereby axle 125 and main shaft portion 120 rotations.Follow above-mentioned rotation, by connecting rod 119, the centrifugal motion of centrifugal part 122 forces piston 117 to move back and forth in cylinder 113.Therefore, piston 117 is carried out the so-called compressed action of the air inlet of compression cylinder inside.
Follow the rotation of axle 125, main shaft portion 120 rotations, lower part helical groove 142 is rotated in sleeve pipe 146 then, and this sleeve pipe 146 is supported so that do not rotate by support 170.Correspondingly, produced the surface friction drag that causes owing to viscous resistance in the oil in lower part helical groove 142 102 with respect to sleeve pipe 146.Utilize this surface friction drag, relatively watch from lower part helical groove 142, oil 102 is along the sense of rotation rotation of sleeve pipe 146.Utilize this relative rotation with respect to lower part helical groove 142, produced the oil pressure of specified quantitative, and utilize this pressure, oil 102 rises in lower part helical groove 142.Utilize this rising of oil 102, produce oil pressure in the oil 102 in lower part helical groove 142.Because this, oil 102 rises in upright opening 144.The oil 102 that rises by this way arrives the sliding movement part that the outer surface by the interior perimeter surface of bearing 116 and main shaft portion 120 forms, and lubricates this sliding movement part.
In current example, refrigerant gas 103 is hydrocarbon type coolant R600a preferably, and oil 102 preferably artificial oil, vaseline (petrolatum) or many hydroxyls ester oils (polyol ester oil).They are all compatible with refrigerant gas 103.For this hydrocarbon type coolant, because it neither comprises chlorine and does not also comprise fluorine, its molecular wt is less, and particularly it and artificial oil or vaseline highly compatible.Therefore, may cause the extreme of oily viscosity to descend.Usually, when oily viscosity descended, viscous resistance descended, and is unfavorable for probably lubricating.Yet, in current example, because it not really depends on the centrifugal force that reduces when hanging down rotational speed, therefore because the viscous force of its viscosity traction rises oil.Therefore, can determine:, also can realize the extraction of stable lubricant oil even with low rotational speed such as 600rpm.
If the gap along the direction of diameter between the lower, outer perimeter of the internal diameter of sleeve pipe 146 and main shaft 120 is too big, oil droplet therebetween down and lubricated amount reduce.Yet, experimental results show that: when the gap that is selected as in gap on the diameter from 100 μ m to 500 μ m, do not have this a large amount of feedback oil to reduce; And the contact of any inconvenience can appear between the lower, outer perimeter of the inwall of sleeve pipe 146 and main shaft 120 in addition, hardly.
According to current example, sleeve pipe 146 length are shorter, and it is to be connected with bolt 160 with the rotatable relation in lower end of the main shaft portion 120 of axle 125, and packing ring 162 is mediate.Therefore, for the relative position relation of sleeve pipe 146,, keep the approximately constant gap between them along their direction of diameter with respect to main shaft portion 120.Therefore, can occur hardly owing to the inclination between them and in addition because the lateral pressure that their axial position differences cause.And because the oil pressure that produces in the upper and lower spiral chute 142 ' and 142, the gap between main shaft portion 120 and the sleeve pipe 146 and each gap on the main shaft keep good state.Adopt this mode, the skimming wear between sleeve pipe 146 and the main shaft portion 120 becomes very little.
Therefore, because reducing of the skimming wear between main shaft portion 120 and the sleeve pipe 146, any this kind trouble of eliminating or having reduced may occur in the prior art: the abrasion particle that produces from the bar that is arranged on a bottom is with the sliding parts circulation of the compressed machine of oil stream, and so produces and nipped sliding parts and compressor unit is blocked of circuit abrasion particle.Therefore, realize in the current example of the present invention the compressor that can realize having high reliability therein.
In addition, for main shaft portion 120,, process if therefore when rotary main shaft part 120, carry out because upper and lower spiral chute 142 ' and 142 is set directly on two-part of periphery, they can make manufacturing automation become easy by easily forming such as end mill (end mill).
In addition, for approximate cup-shaped sleeve 146, because it has the simple shape of the global formation article that can manufacture PBT, therefore without any need for the mould of complicated shape, and it can be with the low cost manufacturing.Therefore, can dispose and have large-duty high viscosity pump, cause low-cost compressor can be provided.
＜example 2 〉
Fig. 3 is the sectional view of vertical section of the compressor of embodiment according to the present invention 2; Fig. 4 is the sectional view according to the amplification major component of the bottom of same instance.
Hereinafter with reference to Fig. 3 and Fig. 4, example of the present invention is described.For the parts identical or quite identical, will specify same numeral and ignore detailed description with the composition of example 1.
Hereinafter, the structure to oil pump 240 is elaborated.
Lower part helical groove 142 is set on the periphery of bottom of main shaft portion 120.It is similar to example shown in Fig. 21.Upright opening 144 is provided with (as shown in Figure 4) in main shaft portion 120 inside along its axial centre.Upright opening 144 is connected to the sliding parts that is formed by main shaft portion 120 and bearing 116.The upper end of lower part helical groove 142 is connected to upright opening 144 by horizontal attachment hole 144 '.
And approximate cup-shaped sleeve 246 has the degree of depth that can hold lower part helical groove 142, and this sleeve pipe 246 utilizes the synthetic resin (expectation PBT) with anti-refrigeration agent and oil-resistant characteristic to make global formation spare.Approximate this term of cup-shaped sleeve means that it can comprise as the multiple modification in the example 1.This sleeve pipe 246 has: go up the bolt fastening hole 250 that is provided with at base plate 246 '; With the filler opening 252 that on side surface, is provided with; And have and be formed with outwards and to the outstanding a plurality of wings 256 of peripheral direction.In this, filler opening 252 is to be set on the base plate.Next, the gap between the lower, outer perimeter diameter of the internal diameter of sleeve pipe 246 and main shaft portion 120 is selected as on their diameter from 100 μ m to 500 μ m.
In the bottom of main shaft portion 120, by being arranged on the position near the bolt fastening hole on the base plate 246 ' of the lower end of sleeve pipe 246 250, bolt 160 is fixed to the screwed bottom part of upright opening 144 with thread connecting mode, and packing ring 162 inserts therebetween.It is bigger than the external diameter of the helical thread portion of bolt 160 that the bolt fastening hole 250 of this base plate 246 ' is made, and the head of bolt 160 is fixed to the base plate of sleeve pipe 246 loosely.Utilize this configuration, main shaft portion 120 rotations that are connected with bolt 160 freely join sleeve pipe 246 to.The bottom of these bolt 160 sealing upright openings 144.This packing ring 162 is formed by high abrasion resisting material (preferably such as the tetrafluoroethylene with self-lubricating property), thereby sleeve pipe 246 is steadily rotated with respect to main shaft portion 120.
Below will the relevant operation of the compressor of the example 2 of structure as mentioned above be described.
When from inverter drive circuit unlatching stator 136, rotor 137 rotations, thereby axle 125 and main shaft portion 120 rotations, and lower part helical groove 142 is rotated in sleeve pipe 246.Be pulled with rotation though sleeve pipe 246 utilizes the rotation of main shaft portion 120, because the rotation of the wing 256 in oil 102 causes very strong viscous resistance, so sleeve pipe 246 is with the low rotational speed rotation more much lower than the rotational speed of main shaft 120.Therefore, between main shaft portion 120 and sleeve pipe 246, appearance is poor near the rotational speed of the rotational speed of axle 125.
According to above-mentioned action, in the oil 102 in spiral chute, produced the surface friction drag that causes owing to viscous resistance with respect to sleeve pipe 146.Utilize this surface friction drag, relatively watch from lower part helical groove 142, oil 102 is along the sense of rotation rotation of sleeve pipe 246, and utilize with respect to this relative rotation of spiral fluted, produced the oil pressure of specified quantitative, utilized this oil pressure, oil 102 rises in lower part helical groove hole 142.Utilize this rising of oil, produce oil pressure in the oil 102 in lower part helical groove, thus, oil rises in upright opening 144.So the oil that rises arrives the sliding movement part that the outer surface by the interior perimeter surface of bearing 116 and main shaft portion 120 forms, lubricates it then.
In current example, refrigerant gas 103 is hydrocarbon type coolant 600a preferably, and oil 102 preferably artificial oil, vaseline (petrolatum) or polyatomic alcohol polybasic alcohol ether oils (polyol ester oil).They are all compatible with refrigerant gas 103.For this hydrocarbon type coolant, because it neither comprises chlorine and does not also comprise fluorine, its molecular wt is less, and particularly it and artificial oil or vaseline highly compatible.Therefore, may cause the extreme of oily viscosity to descend.Usually, when oily viscosity descended, viscous resistance descended, and is unfavorable for probably lubricating.Yet in current example, because it not really depends on the centrifugal force that reduces in low rotational speed, but oil 102 is because its viscosity utilizes the viscosity of traction to rise.Therefore, can determine:, also can realize the extraction of stable lubricant oil even with low rotational speed such as 600rpm.
If too big along diametric gap between the lower, outer perimeter of the internal diameter of sleeve pipe 246 and main shaft portion 120, oil droplet therebetween falls and lubricated amount reduces.Yet, experimental results show that: if the gap is the gap from 100 μ m to 500 μ m on diameter, do not have the minimizing of so a large amount of feedback oil, and in addition, any inconvenience contacts between the inwall that can occur sleeve pipe 246 hardly and the lower, outer perimeter of main shaft portion 120.
In current example, sleeve pipe 246 rotations freely are connected to bolt 160, make packing ring 162 be present in the lower end of main shaft portion 120.And it is bigger than the external diameter of the helical thread portion of bolt 160 that the bolt fastening hole 250 of base plate 246 ' is made, and the head of bolt 160 is fixed to the base plate 246 ' of sleeve pipe 246 loosely.Utilize this configuration, main shaft portion 120 rotations that are connected with bolt 160 freely join sleeve pipe 246 to, and the relative position between them is determined by the head and the relativeness between the above-mentioned main shaft 120 of above-mentioned bolt 160.The bottom of these bolt 160 sealing upright openings 144.This packing ring 162 is formed by high abrasion resisting material (preferably such as the tetrafluoroethylene with self-lubricating property), thereby sleeve pipe 246 can steadily be rotated with respect to main shaft portion 120.Because the effect of the oil pressure that produces in lower part helical groove 142, the gap between sleeve pipe 246 and the main shaft portion 120 keep constant.Therefore, can not appear between sleeve pipe 246 and the main shaft portion 120 because contacting or lateral pressure of may occurring of their axial position difference, and therefore, seldom occur the slip abrasion between them.
Because sliding movement friction is very little, this phenomenon can not occur: produce abrasion particle and they with oil circulation in the sliding movement part, and their nipped sliding movement parts and compressor is blocked.Therefore, can realize having the compressor of high reliability.
In addition, since be arranged on lower part helical groove 142 on the part of lower, outer perimeter of main shaft portion 120 by direct engraving or cutting on metal main shaft portion, therefore execution adds man-hour when in rotary main shaft part 120 time, it can make manufacturing automation become easy by forming such as end mill.
In addition, sleeve pipe 246 can form with the wing 256 by global formation utilization such as PBT, and because it has simple shape, does not therefore need the mould of complicated shape, thereby can make at low cost.
Because the wing 256 is subjected to the strong viscous resistance along sense of rotation in oil 102, therefore himself rotates disturbed, need not sleeve pipe 246 indirect securement to stator, it is very simple that thereby this configuration becomes, only need utilize bolt 160 that it is connected to main shaft portion 120, only need the parts and the manufacturing step of limited quantity.Therefore, viscosity pump can be equipped, low-cost compressor can be provided thus with high productivity.
＜example 3 〉
Fig. 5 is the sectional view of the compressor of cutting open along vertical section of embodiment according to the present invention 3; And Fig. 6 is the amplification view according to the bottom major component of the compressor of same instance mode of the present invention.
Hereinafter, with reference to Fig. 5 and Fig. 6, current example will be described.For the parts identical or quite identical, use same numeral and omitted detailed description with the composition of example 1.
In the sleeve pipe 346 of the lower end of the main shaft portion 120 of being installed to the axle 125 that constitutes compressor unit 210, form the oil pump 340 that immerses in the oil 102.
Hereinafter, the composition to oil pump 340 is elaborated.Lower part helical groove 142 is set on the periphery of bottom of main shaft portion 120.It is similar to the example 1 shown in Fig. 2.Upright opening 144 is provided with (as shown in Figure 6) in main shaft portion 120 inside along its axial centre.This upright opening 144 is connected to the sliding parts that is formed by main shaft portion 120 and bearing 116.By horizontal attachment hole 142 ', the upper end of lower part helical groove 142 is connected to upright opening 144.
Approximate cup-shaped sleeve pipe 346 has the degree of depth that can hold lower part helical groove 142, and this sleeve pipe 346 is made by the synthetic resin with anti-refrigeration agent and oil-resistant characteristic (expectation PBT) global formation spare.Approximate this term of cup-shaped sleeve means that it can comprise as the multiple modification in the example 1.This sleeve pipe 346 has: be arranged on the bolt fastening hole 350 on the base plate 346 '; With the filler opening 352 that on side surface, is provided with; And have and form to peripheral direction, outside outstanding a plurality of arms 356.In this, in another example, filler opening 352 can be arranged on the base plate 346 '.
Gap between the lower, outer perimeter diameter of the internal diameter of sleeve pipe 346 and main shaft portion 120 is selected to 500 μ m from 100 μ m.
On arm 356, permanent magnet 358 is fixed respectively, and being placed on the approximate fixed permanent magnet 360 of facing the position of permanent magnet 358 is set on the inner bottom surface of seal container 101 with the predetermined gap that is fit to, by this gap, can have an effect with the mutual magnetic force of each permanent magnet 358.A plurality of arms 356, permanent magnet 358 and fixed permanent magnet 360 constitute the rotation restraining device.In this, permanent magnet 358 and fixed permanent magnet 360 are opposite magnetic pole with its opposed facing surface respectively mode is provided with.
In the bottom of main shaft portion 120, go up the bolt fastening hole 350 that is provided with by the position near the base plate 346 ' of the lower end of sleeve pipe 346, bolt 160 is fixed to the threaded bottom part of upright opening 144 with thread connecting mode, and packing ring 162 inserts therebetween.It is bigger than the external diameter of the helical thread portion of bolt 160 that the bolt fastening hole 350 of this base plate 346 ' is made, and the head of bolt 160 is fixed to the base plate 346 ' of sleeve pipe 346 ' loosely.Utilize this configuration, main shaft 120 rotations that are connected with bolt 160 freely join sleeve pipe 346 to.And the bottom of these bolt 160 sealing upright openings 144.This packing ring 162 is formed by high abrasion resisting material (preferably such as the tetrafluoroethylene with self-lubricating property), thereby sleeve pipe 346 can steadily be rotated with respect to main shaft portion 120.
Below will the relevant operation of the compressor of the example 3 of structure as mentioned above be described.
When from inverter drive circuit unlatching stator 136, rotor 137 rotations, thereby axle 125 and main shaft portion 120 rotations, and lower part helical groove 142 is rotated in sleeve pipe 346.Though sleeve pipe 346 is pulled with rotation by the rotation that utilizes main shaft portion 120, but, therefore prevented that sleeve pipe 346 from rotating freely with respect to main shaft 120 owing to the fixed permanent magnet 360 on arm permanent magnet 358 that is fixed to the upper and the end inner plane that is fixed on seal container 101 attracts each other.Therefore, produced poor in the middle of their rotational speed.
According to above-mentioned action, in the oil 102 in lower part helical groove 142, produced the surface friction drag that causes owing to viscous resistance with respect to sleeve pipe 346.Utilize this surface friction drag, relatively watch from lower part helical groove 142, oil 102 is along the sense of rotation rotation of sleeve pipe 346, and utilize this relative rotation with respect to lower part helical groove 142, produced the oil pressure of specified quantitative, and utilized this pressure, oil rises in lower part helical groove 142.Utilize this rising of oil, produce oil pressure in the oil 102 in lower part helical groove in 142, and thus, oil 102 rises in upright opening 144.So the oil that rises arrives the sliding movement part that the outer surface by the interior perimeter surface of bearing 116 and main shaft portion 120 forms, lubricates it then.
In current example, refrigerant gas 103 is hydrocarbon type coolant 600a preferably, and oil 102 preferably artificial oil, vaseline (petrolatum) or polyatomic alcohol polybasic alcohol ether oils (polyol ester oil).All compatible with refrigerant gas 103 oil is used.For hydrocarbon type coolant, because it neither comprises chlorine and also do not comprise fluorine, so its molecular wt is less, and particularly it and artificial oil or vaseline highly compatible.Therefore, may cause the extreme of oily viscosity to descend.Usually, when oily viscosity descended, viscous resistance descended, and is unfavorable for probably lubricating.Yet, in current example,, but utilize because its viscosity and the power of traction rises oil 102 because it not really depends on the centrifugal force that reduces in low rotational speed.Therefore, can determine:, also can realize the extraction of stable lubricant oil even with low rotational speed such as 600rpm.
If along diametric(al), the gap between the lower, outer perimeter of the internal diameter of sleeve pipe 346 and main shaft 120 is too big, and oil 102 is drippage betwixt, and lubricated amount reduces.Yet experimental results show that: if on diameter, the gap is the gap from 100 μ m to 500 μ m, does not have so a large amount of feedback oil and reduces, and in addition, and any inconvenience contacts between the inwall that can occur sleeve pipe 346 hardly and the lower, outer perimeter of main shaft portion 120.
In current example, sleeve pipe 346 rotations freely are connected to bolt 160, make packing ring 162 be present in the lower end of main shaft portion 120.And it is bigger than the external diameter of the helical thread portion of bolt 160 that the bolt fastening hole 350 of base plate 346 ' is made, and the head of bolt 160 is fixed to the base plate 346 ' of sleeve pipe 346 loosely.Utilize this configuration, main shaft portion 120 rotations that are connected with bolt 160 freely join sleeve pipe 346 to, and the relative position between them is determined by the head and the relativeness between the above-mentioned main shaft 120 of above-mentioned bolt 160.The bottom of these bolt 160 sealing upright openings 144.This packing ring 162 is formed by high abrasion resisting material (preferably such as the tetrafluoroethylene with self-lubricating property), thereby sleeve pipe 346 can steadily be rotated with respect to main shaft portion 120.Because the effect of the oil pressure that produces in lower part helical groove 142, the gap between sleeve pipe 346 and the main shaft portion 120 keep constant.Therefore, can not appear between sleeve pipe 346 and the main shaft portion 120 because contacting or lateral pressure of may occurring of their axial position differences, and therefore, seldom occur the slip abrasion between them.
Because sliding movement friction is very little, therefore this phenomenon can not appear: produce abrasion particle and they circulate with oil in the sliding movement part, and their are nipped in the sliding movement parts and compressor is blocked.Therefore, can realize having the compressor of high reliability.
In addition, since be arranged on lower part helical groove 142 on the part of lower, outer perimeter of main shaft portion 120 by direct engraving or cutting on metal main shaft portion, therefore by processing in rotary main shaft part 120, it can be processed to form by the standard machine such as end mill, makes the easy production automation.
This sleeve pipe 346 can preferably utilize PBT to form with arm 356 by global formation, and because it has simple shape, does not therefore need the mould of complicated shape, thereby can make at low cost.
In addition, each permanent magnet 358 is fixed on the arm 356, and be set at mechanism on the inner bottom surface of seal container 101 with the predetermined gap that is fit to owing to be placed on the fixed permanent magnet 360 of approximate position in the face of permanent magnet 358, rotate disturbed, then need not sleeve pipe 346 is fixed to stator 136 indirectly, and can use and only utilize bolt 160 to be connected to the open-and-shut structure of main shaft portion 120, only need the parts and the manufacturing step of limited quantity.Therefore, the low-cost compressor of the viscosity pump that is equipped with high productivity can be provided.
Therefore, in above-mentioned example,, the example of using the attraction force of permanent magnet has been described as form of the invention process.In addition, also have such configuration: wherein arrange the same pole of permanent magnet, so that they face with each other along the sense of rotation of axle, thereby obtain the repulsive force of permanent magnet, utilize this repulsive force, the rotation of sleeve pipe is hindered.In addition, by being used to be arranged on the plain body of soft iron or soft iron on the arm or a side of the magnet on the base plate of seal container, can obtain identical or similar function.
Industrial usability
Compressor according to the present invention can be used in that those are old such as domestic refrigerator, dehumidifier, food The device of the use kind of refrigeration cycle of row cupboard or automatic vending machine.
Claims (8)
1. compressor comprises:
Wherein store the seal container of oil,
Motor, this motor are contained in the described seal container and comprise stator and rotor,
Be connected to by described electric motor driven compressor unit, described compressor unit comprises axle, and described axle vertically extends and rotated by described motor; With
Oil pump, described oil pump are formed on the lower end of described axle and immerse in the described oil,
It is characterized in that:
Described oil pump comprises: the spiral chute that is provided with in the periphery of described axle; Cup-shaped sleeve, described cup-shaped sleeve are installed in rotation on the lower end of described axle, so that cover described spiral chute, and limit predetermined gap between described axle and described sleeve pipe; Suppress part with the rotation of the rotation that is used to suppress described sleeve pipe.
2. compressor according to claim 1, wherein: described rotation suppresses part and comprises support, and described support and described stator are fixed together so that described sleeve pipe is fixed to described stator.
3. compressor according to claim 1, wherein: described rotation suppresses part and comprises the wing, and this wing is formed on the periphery of described sleeve pipe, to produce viscous resistance with respect to oil.
4. compressor according to claim 1, wherein: described rotation suppresses part and comprises one the permanent magnet that is fixed in described sleeve pipe and the described seal container, and parts, these parts be fixed in described sleeve pipe and the described seal container another in case the magnetic force of described permanent magnet on these parts.
5. according to the described compressor of each claim among the claim 1-4, wherein: described compressor unit also comprises the axle supporting element that is used for supporting rotationally described axle, described axle has the upright opening that limits therein with along its Vertical direction extension, described upright opening is communicated with described spiral fluted upper end, and has the gap between described axle and described axle supporting element.
6. according to the described compressor of each claim among the claim 1-4, wherein: described sleeve pipe is formed by synthetic resin.
7. according to the described compressor of each claim among the claim 1-4, wherein: described compressor unit in described seal container by elastic support.
8. according to the described compressor of each claim among the claim 1-4, wherein: described motor is driven to comprise the frequency of okperation less than the frequency of power supply frequency.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003382195 | 2003-11-12 | ||
| JP382195/2003 | 2003-11-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1878960A CN1878960A (en) | 2006-12-13 |
| CN100453807C true CN100453807C (en) | 2009-01-21 |
Family
ID=34587249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800334609A Expired - Fee Related CN100453807C (en) | 2003-11-12 | 2004-11-11 | Compressor |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20070081908A1 (en) |
| EP (1) | EP1687533A1 (en) |
| JP (1) | JP2007510836A (en) |
| KR (1) | KR20060120119A (en) |
| CN (1) | CN100453807C (en) |
| WO (1) | WO2005047699A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725307A (en) * | 2017-10-11 | 2018-02-23 | 黄石东贝电器股份有限公司 | Oil pump structure and compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0604908A (en) | 2006-10-31 | 2008-07-01 | Whirlpool Sa | refrigeration compressor oil pump |
| PT2178796T (en) | 2007-07-11 | 2021-03-29 | Clene Nanomedicine Inc | Continuous methods for treating liquids and manufacturing certain constituents (e.g., nanoparticles) in liquids, apparatuses and nanoparticles and nanoparticle/liquid solution(s) resulting therefrom |
| BRPI0800686A2 (en) * | 2008-01-21 | 2009-09-08 | Whirlpool Sa | oil pump for a refrigeration compressor |
| BRPI0804302B1 (en) | 2008-10-07 | 2020-09-15 | Embraco Indústria De Compressores E Soluções Em Refrigeração Ltda | OIL PUMP ASSEMBLY ARRANGEMENT IN A COOLING COMPRESSOR |
| BRPI0905651B1 (en) * | 2009-11-03 | 2020-03-10 | Embraco Indústria De Compressores E Soluções Em Refrigeração Ltda | ARRANGEMENT OF ECCENTRIC AXLE ASSEMBLY IN A COOLING COMPRESSOR BLOCK |
| KR20120043449A (en) * | 2010-10-26 | 2012-05-04 | 엘지전자 주식회사 | Hermetic compressor |
| WO2012062848A1 (en) * | 2010-11-11 | 2012-05-18 | Arcelik Anonim Sirketi | Hermetic compressor with oil sucking member |
| CN104169581B (en) * | 2011-12-27 | 2016-07-06 | 阿塞里克股份有限公司 | Comprise the compressor of oil inhalation part |
| KR101910656B1 (en) * | 2012-04-25 | 2018-10-23 | 삼성전자주식회사 | Hermetic reciprocating compressor |
| KR101997555B1 (en) * | 2012-10-12 | 2019-07-09 | 엘지전자 주식회사 | Compressor |
| WO2016192976A1 (en) * | 2015-06-02 | 2016-12-08 | Arcelik Anonim Sirketi | Compressor with a movable oil suction apparatus |
| CN106979141A (en) | 2016-01-19 | 2017-07-25 | 惠而浦股份有限公司 | Oil pump assembly apparatus in cooling compressor |
| JP2023535992A (en) | 2021-04-14 | 2023-08-22 | 安徽美芝制冷設備有限公司 | Crankshafts, inverter compressors and refrigeration equipment |
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- 2004-11-11 JP JP2006519258A patent/JP2007510836A/en not_active Withdrawn
- 2004-11-11 EP EP04799747A patent/EP1687533A1/en not_active Withdrawn
- 2004-11-11 WO PCT/JP2004/017134 patent/WO2005047699A1/en active Application Filing
- 2004-11-11 CN CNB2004800334609A patent/CN100453807C/en not_active Expired - Fee Related
- 2004-11-11 KR KR1020067009560A patent/KR20060120119A/en not_active Application Discontinuation
- 2004-11-11 US US10/578,199 patent/US20070081908A1/en not_active Abandoned
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| CN107725307A (en) * | 2017-10-11 | 2018-02-23 | 黄石东贝电器股份有限公司 | Oil pump structure and compressor |
| CN107725307B (en) * | 2017-10-11 | 2019-04-26 | 黄石东贝电器股份有限公司 | Oil pump structure and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070081908A1 (en) | 2007-04-12 |
| CN1878960A (en) | 2006-12-13 |
| JP2007510836A (en) | 2007-04-26 |
| WO2005047699A1 (en) | 2005-05-26 |
| KR20060120119A (en) | 2006-11-24 |
| EP1687533A1 (en) | 2006-08-09 |
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