CN101624987A - Pressure control device of rotary compressor and application thereof - Google Patents
Pressure control device of rotary compressor and application thereof Download PDFInfo
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- CN101624987A CN101624987A CN200910041670A CN200910041670A CN101624987A CN 101624987 A CN101624987 A CN 101624987A CN 200910041670 A CN200910041670 A CN 200910041670A CN 200910041670 A CN200910041670 A CN 200910041670A CN 101624987 A CN101624987 A CN 101624987A
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Abstract
The invention relates to a pressure control device of a rotary compressor and the application thereof. The pressure control device of the rotary compressor comprises a compression component and a motor component which are arranged inside a shell, wherein the interior of the shell is divided into three chambers by the compression component and the motor component; the motor component comprises a rotor and a stator, and the end part of the rotor is provided with a rotor end ring; the compression component includes an air cylinder, a main bearing, a secondary bearing and an eccentric crankshaft, and the center of the eccentric crankshaft is provided with a central hole which is communicated with an oil storage cavity; the rotor end ring is provided with the pressure control device which comprises a cover nut that is connected with the rotor end ring; an end ring space is surrounded by the cover nut and the rotor end ring; the cover nut is provided with an open hole and a first fan blade, and the open hole is communicated with a first motor cavity and a second motor cavity; the end ring space is communicated with one end of the central hole. The pressure control device can be separated from the rotor end ring, has good pressure reducing effect, and not only can be used for the horizontal type rotary compressor, but also the vertical rotary compressor.
Description
Technical field
The present invention relates to the pressure control device and the application thereof of a kind of rotary compressor, particularly a kind of rotary compressor.
Background technique
The Horizontai rotary compressor that the eccentric crankshaft along continuous straight runs is placed, the vertical rotating compressor of vertically placing with respect to eccentric crankshaft has the reducible big advantage of overall height, under the situation that does not change height, the system of carrying Horizontai rotary compressor has the advantage that can increase actual volume.But parallel just because of the Horizontai rotary compressor rotating center with pasta, therefore how to realize that fuel feeding is the key technology of Horizontai rotary compressor.
Before the nineties in last century, occurred utilizing at rotor end ring processing fan blade forming rotor fan, be that fan generation centrifugal force supplies to the oil of compressor bottom oil sump in the rotating center by the rotor rotation.
In recent years, it is poor that the rotor fan technology more is applied to controlling the Horizontai rotary compressor internal pressure, discloses a kind of lubrication system and controlling method and application of Horizontai rotary compressor in Chinese patent literature CN101403385A on April 8th, 2009 as our company.Realizing that fuel feeding simultaneously, because the relation of internal differential pressure brings the fuel head difference of cutting apart between the cavity to form, the shoe cream room pasta is higher than the motor cavity pasta all the time in the compressor operation process, except guaranteeing continual and steady fuel feeding, also can reduce in the motor cavity pasta and rotor and interfere and bring compressor to tell oil mass to rise.Particular content is seen accompanying drawing 1-accompanying drawing 3, is the Horizontai rotary compressor of high pressure for pressing in the housing.The housing 11 of Horizontai rotary compressor is by columniform central housing 11a, the left side housing 11b and the right side housing 11c of welded seal form respectively with its opening end.The internal fixation of the housing 11a of central authorities compression assembly 12 and electric machine assembly 13.Enclosure interior has been enclosed an amount of oil 122.Electric machine assembly 13 is made of stator 14 and rotor 15.Stator 14 is fixed on the inner radius of central housing 11a, and the external diameter of stator 14 is provided with one and above nicked plane, in horizontal compressor as the gas channel 123 and the first oily passage 124a.Rotor 15 is fixed on the outer radius of eccentric crankshaft 111.Produce torque between rotor 15 and the stator 14, and have the effect of transmission of torque being given eccentric crankshaft 111.The compression assembly that carries out gas compression is made of cylinder 16, piston 17, slide plate 18, main bearing 19, supplementary bearing 110 and eccentric crankshaft 111 etc.Center hole 125 is set on the eccentric crankshaft 111, it is arranged on the center of eccentric crankshaft 111, the inside of housing 11 is divided into three chambeies by cylinder 16 and electric machine assembly 13, promptly be positioned at the right side shoe cream room 112, be positioned at the left side first motor cavity 113 and be positioned in the middle of second motor cavity 140, see Fig. 1, the bottom of cylinder 16 be provided with respectively to shoe cream room 112 and and the second oily passage 124b of second motor cavity, 140 perforates, the gas channel 123 and the first oily passage 124a are communicated with first motor cavity 113 and second motor cavity 140 respectively.
In shoe cream room 112, fixed oily cap 114 at the central part of supplementary bearing 110.The top of oil cap 114 is by hole or pipe and shoe cream room 112 upper gas spatial communication.Oil cap 114 has been communicated with the center hole 125 at bent axle 111 centers in shoe cream room 112.This center hole 125 is the passage of oil, also is the passage of gas.In first motor cavity 113, the rotor end ring 115a that is positioned at rotor 15 left sides is provided with several grooves from rotor 15 radial outer diameter openings, this groove is called end ring groove 116, see Fig. 3, the wall that forms between groove and groove is called fan blade 117, this end ring groove 116 can be cast simultaneously when the rotor end ring 115a in this left side casting and form, and also can process on the rotor end ring 115a in this left side by the machining mode.The 115a top of the rotor end ring in this left side is provided with cast aluminium post 118.End plate 119 is arranged between left side rotor end ring 115a and the left side equilibrium block 120a, and end plate 119 and left side equilibrium block 120a are riveted on the rotor end ring 115a by cast aluminium post 118 together.So, between end plate 119 and end ring groove 116, form several passages to the cylindrical opening of rotor 15.The space portion that is surrounded by end plate 119 and rotor end ring 116 internal diameters is called end ring space 121.
In the prior art, Horizontai rotary compressor is by directly casting or be machined into rotating blading on the motor rotor end ring cast aluminium, and is riveted on the rotor end ring space with end plate and forms dropping equipment.
But, this fan blade that on the Horizontai rotary compressor electric motor rotor aluminium casting, forms, cause the Horizontai rotary compressor can not be shared with rotor and conventional vertical Horizontai rotary compressor usefulness rotor, need special corresponding cast-aluminum die or process equipment to make this fan blade, bring the increase on the manufacture cost.The excessive decline that causes electric efficiency easily of casting aluminum rotor working area simultaneously.
Summary of the invention
Purpose of the present invention aim to provide a kind of simple and reasonable, can separate with rotor end ring, antihypertensive effect is good, not only can be used for Horizontai rotary compressor, but also can be used for the pressure control device and the application thereof of the rotary compressor of vertical rotating compressor, to overcome deficiency of the prior art.
Press the pressure control device of a kind of rotary compressor of this purpose design, comprise the compression assembly and the electric machine assembly that are arranged in the housing,
Enclosure interior is compressed assembly and electric machine assembly is separated into three chambers, be respectively at the shoe cream room between compression assembly and the housing, at first motor cavity between electric machine assembly and the housing and second motor cavity between compression assembly and electric machine assembly,
Electric machine assembly comprises rotor and stator, and rotor tip is provided with rotor end ring,
Compression assembly comprises cylinder, main bearing, supplementary bearing and eccentric crankshaft, and the center of eccentric crankshaft is provided with center hole, and center hole communicates with shoe cream room,
It is characterized in that rotor end ring is provided with pressure control device, pressure control device comprises cap bag, cap bag and rotor end ring join, cap bag and rotor end ring surround the end ring space jointly, cap bag is provided with the perforate and first fan blade, the perforate and first motor cavity or second motor cavity communicate, and the end ring space communicates with an end of center hole.
Described rotary compressor is a Horizontai rotary compressor, the left end of rotor is provided with the left side rotor end ring, cap bag is arranged in first motor cavity, the base portion of cap bag and left side rotor end ring join, cap bag and left side rotor end ring surround the left end annular space jointly, center hole in the eccentric crankshaft is a through hole, and an end of this center hole is communicated with the left end annular space
Supplementary bearing and oily cap are positioned at shoe cream room, the center socket of oily cap and supplementary bearing, and the top of oily cap is by the upper gas spatial communication of hole or pipe and shoe cream room, and oily cap is communicated with the other end of center hole,
Cap bag is provided with first fan blade that forms along the rotor rotation direction more than, and the next door of first fan blade is provided with perforate, and perforate communicates with first motor cavity.
Described cap bag is provided with the left side equilibrium block, and the base portion of cap bag is provided with the brim of a hat, and the left side equilibrium block is crimped on the brim of a hat, after an end of locating column passes the left side equilibrium block and the brim of a hat successively, is fixed in the rotor end ring of left side.
Described rotary compressor is a Horizontai rotary compressor, the right-hand member of rotor is provided with the right side rotor end ring, cap bag is arranged in second motor cavity, the base portion of cap bag and right side rotor end ring join, and the central authorities of cap bag are provided with positioning hole, and positioning hole is set on the eccentric crankshaft, cap bag, right side rotor end ring and eccentric crankshaft surround the right-hand member annular space jointly, center hole in the eccentric crankshaft is a blind hole, and an end of this center hole communicates with the right-hand member annular space by the by-pass hole that is arranged on the eccentric crankshaft
Supplementary bearing and oily cap are positioned at shoe cream room, the center socket of oily cap and supplementary bearing, and the top of oily cap is by the upper gas spatial communication of hole or pipe and shoe cream room, and oily cap is communicated with the other end of center hole,
Cap bag is provided with first fan blade that forms along the rotor rotation direction more than, and the next door of first fan blade is provided with perforate, and perforate communicates with second motor cavity.
Described cap bag is provided with the right side equilibrium block, and the base portion of cap bag is provided with the brim of a hat, and the right side equilibrium block is crimped on the brim of a hat, after an end of locating column passes the right side equilibrium block and the brim of a hat successively, is fixed in the rotor end ring of right side.
Distance between the internal diameter of described positioning hole and the external diameter of eccentric crankshaft is less than or equal to 1mm.
Described rotary compressor is a Horizontai rotary compressor, and the exhaust passage of this Horizontai rotary compressor is arranged on a side of shoe cream room, first motor cavity or second motor cavity.
Described rotary compressor is the vertical rotating compressor, the upper end of rotor is provided with the upside rotor end ring, cap bag is arranged in first motor cavity, the base portion of cap bag and upside rotor end ring join, cap bag and upside rotor end ring surround the top ring space jointly, and the center hole in the eccentric crankshaft is a through hole, and an end of this center hole is communicated with the top ring space, the other end of center hole is communicated with shoe cream room
Cap bag is provided with first fan blade that forms along the rotor rotation direction more than, and the next door of first fan blade is provided with perforate, and perforate communicates with first motor cavity.
Described rotary compression machine is the vertical rotating compressor; The lower end of rotor is provided with downside rotor end ring; The cover cap is arranged in second motor cavity; Basic section and the downside rotor end ring of cover cap join; The central authorities of cover cap are provided with locating hole; Locating hole is set on the eccentric crankshaft; Cover cap, downside rotor end ring and eccentric crankshaft surround lower end ring space jointly; Centre bore in the eccentric crankshaft is blind hole; One end of this centre bore communicates with lower end ring space by the bypass hole that is arranged on the eccentric crankshaft; The other end of centre bore is communicated with shoe cream room
Cap bag is provided with first fan blade that forms along the rotor rotation direction more than, and the next door of first fan blade is provided with perforate, and perforate communicates with second motor cavity.
A kind of application of pressure control device of rotary compressor is characterized in that this pressure control device both can be applied in the rotary compressor of enclosure interior for low back pressure, can be applied in again in the rotary compressor that enclosure interior is a high back pressure; Both can be applied in the Horizontai rotary compressor, also can be applied in the vertical rotating compressor; Shoe cream room and the pressure difference between first motor cavity or second motor cavity of following rotor rotation can control enclosure interior are all the time stablized, and not influenced by enclosure interior pressure size.
The external diameter of the stator in the electric machine assembly among the present invention and the internal diameter of housing join, the external diameter of any one in the main bearing in the compression assembly, supplementary bearing and the cylinder and the internal diameter of housing join, the external diameter of any one in the external diameter of stator and main bearing, supplementary bearing and the cylinder is divided into enclosure interior three chambers jointly, perhaps, that enclosure interior is divided into three chambers is also passable for the auxiliary spare part that adds other in addition.
Pressure control device among the present invention is independent integral type, can separate with rotor end ring, and the excircle of pressure control device is provided with the fan blade that forms along sense of rotation, and pressure control device is provided with riveted holes.For Horizontai rotary compressor, the riveted joint of cap bag and rotor end ring is installed end ring space that the back forms and is communicated with above-mentioned gas channel, follow rotor rotation to form low pressure in its center of rotation, make the center hole of mixture by eccentric crankshaft of gas in the shoe cream room and oil enter in the motor cavity, pressure in motor cavity is reduced to shoe cream room and motor cavity pressure at both sides difference reaches stationary value, and the inner fuel head of compressor keeps stable.For the vertical rotating compressor, cap bag communicates with the gas space of housing with the end ring space that back formation is installed in the rotor end ring riveted joint, when rotor rotation, the pressure of the central hole of the crankshaft that communicates with the end ring space further reduces, favourable to oiling of central hole of the crankshaft, cause the overpressure of central hole of the crankshaft in the time of simultaneously avoiding high-pressure leakage, oil can't be from the outside failure phenomenon of supplying with of bent axle oil supply hole.In addition, for the vertical rotating compressor tell the big machine of oil mass, oil may directly spray from the center hole of bent axle, and after increasing this cap bag, oil is stopped by cap bag, is thrown out of from perforate along sense of rotation, runs into the line bag of motor and flows back in the shoe cream room along the gap.The oil that moves upward through stator and gap between rotor and the refrigerant mixture whirlpool of following first blade generation on the cap bag rotates simultaneously, can reduce the compressor monomer effectively and tell oil mass, thus the performance and the whole air-conditioning system performance of raising vertical rotating compressor.
That the present invention has is simple and reasonable, can separate with rotor end ring, antihypertensive effect is good, not only can be used for Horizontai rotary compressor, but also can be used for the vertical rotating compressor, both can be used for the rotary compressor of enclosure interior for low back pressure, can be applied in again in the rotary compressor that enclosure interior is a high back pressure, it has bigger Applicable scope.
Description of drawings
Fig. 1 is the sectional structure schematic representation of prior art.
Fig. 2 is the broken section structural representation of the rotor tip among Fig. 1.
Fig. 3 is that A-A among Fig. 2 is to cross-sectional view.
Fig. 4 is the sectional structure schematic representation of first embodiment of the invention.
Fig. 5 is the perspective view of dropping equipment.
Fig. 6 is the main TV structure schematic representation of dropping equipment.
Fig. 7 is the sectional structure schematic representation of second embodiment of the invention.
Fig. 8 is the main TV structure schematic representation of second dropping equipment.
Fig. 9 is the sectional structure schematic representation of second dropping equipment.
Figure 10 is the sectional structure schematic representation of third embodiment of the invention.
Among the figure: 11 is housing, and 11a is central housing, and 11b is the left side housing, 11c is the right side housing, and 12 is compression assembly, and 13 is electric machine assembly, 14 is stator, and 15 is rotor, and 16 is cylinder, 17 is piston, and 18 is slide plate, and 19 is main bearing, 110 is supplementary bearing, and 111 is eccentric crankshaft, and 112 is shoe cream room, 113 is first motor cavity, 114 is oily cap, and 115a is the left side rotor end ring, and 115b is the right side rotor end ring, 116 is the end ring groove, 117 is fan blade, and 118 is locating column, and 119 is end plate, 120a is the left side equilibrium block, 120b is the right side equilibrium block, and 121 is the left end annular space, and 122 is oil, 123 is gas channel, 124a is the first oily passage, and 124b is the second oily passage, and 125 is center hole, 126 is cap bag, 126.1 be the brim of a hat, 140 is second motor cavity, 217 is first fan blade, 218 is the right side rotor end ring, 219 is the right side equilibrium block, and 220 are perforate, and 221 are by-pass hole, 222 is the right-hand member annular space, 223 positioning holes, 224 is the bent axle oil supply hole, 315a is the upside rotor end ring, 320a is the upside equilibrium block, and 321 is the top ring space.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Below continue to use with background technique in identical reference character.
First embodiment
Referring to Fig. 4-Fig. 6, when pressure control device was used for Horizontai rotary compressor, Horizontai rotary compressor comprised compression assembly 12 and the electric machine assembly 13 that is arranged in the housing 11, enclosed an amount of oil 122 in the columniform housing 11.Housing 11 inside are compressed assembly 12 and electric machine assembly 13 is separated into three chambers, are respectively at the shoe cream room 112 between compression assembly 12 and the housing 11, at first motor cavity 113 between electric machine assembly 13 and the housing 11 and second motor cavity 140 between compression assembly 12 and electric machine assembly 13.
The external diameter of the stator 14 in the electric machine assembly 13 and the internal diameter of housing 11 join, in the compression assembly in main bearing 19, supplementary bearing 110 and the cylinder 16 any one external diameter and the internal diameter of housing 11 join, the external diameter of any one in the external diameter of stator 14 and main bearing 19, supplementary bearing 110 and the cylinder 16 is divided into enclosure interior three chambers jointly.Present embodiment is that the external diameter by stator 14 and cylinder is divided into three chambers with enclosure interior, but, except above technological scheme, can also pass through stator 14 and main bearing 19, perhaps the combination of stator 14 and supplementary bearing 110 is divided into three chambers with enclosure interior, and can separate enclosure interior by additional divider, its technique effect communicates.
In shoe cream room 112, the central part fixed cover of supplementary bearing 110 is connected to oily cap 114.The top of oil cap 114 is by hole or pipe and shoe cream room 112 upper gas spatial communication.Oil cap 114 has been communicated with the center hole 125 at eccentric crankshaft 111 centers in shoe cream room 112.This center hole 125 is the passage of oil, also is the passage of gas.
More than be the part identical with background technique.
In order to optimize the rotor end ring dropping equipment described in the background technique, reduce manufacture cost, realize the generalization of horizontal rotary compressor simultaneously with rotor and conventional vertical rotating electric moto used in compressor rotor, it is as follows now to propose alternate embodiments:
In first motor cavity 113, the left side rotor end ring 115a that is positioned at rotor 15 left sides is provided with pressure control device, pressure control device comprises cap bag 126, cap bag is arranged in first motor cavity 113, the base portion of cap bag 126 and left side rotor end ring 115a join, cap bag 126 surrounds left end annular space 121 jointly with left side rotor end ring 115a, center hole 125 in the eccentric crankshaft 111 is a through hole, one end of this center hole 125 is communicated with left end annular space 121, the other end of center hole 125 is communicated with the upper gas space of shoe cream room 112 by oily cap 114, cap bag 126 is provided with first fan blade 217 that forms along the rotor rotation direction more than, the next door of first fan blade is provided with perforate 220, and perforate communicates with first motor cavity 113.First fan blade 217 and perforate 220 are respectively more than two, are distributed on the periphery of cap bag 126.
Locating column 118 can adopt the cast aluminium post.Left side equilibrium block 120a is riveted together with left side rotor end ring 115a by the locating column on the rotor end ring 115a of left side 118.
The exhaust passage of Horizontai rotary compressor is arranged on a side of shoe cream room 112, first motor cavity 113 or second motor cavity 140.In the present embodiment, the exhaust passage is provided with a side of first motor cavity 113.
When compressor operating, rotor 15 high speed rotating, first fan blade 217 that forms along sense of rotation produces whirlpool in the high speed rotating process, whirlpool be centered close to above-mentioned left end annular space 121, its internal pressure is a minimum pressure.Shoe cream room 112 is communicated with the center hole 125 and the oily cap 114 of left end annular space 121 by eccentric crankshaft 111, in rotor 15 rotation processes, because left end annular space 121 produces low pressure, shoe cream room 112 upper space gases enter pressure control device by above-mentioned passage, and the perforate 220 from pressure control device enters in first motor cavity 113 shoe cream room 112 1 side pressure so reduction.
The oil of housing 11 bottoms is communicated with first motor cavity 113, second motor cavity 140 and shoe cream room 112 by the first oily passage 124a and the second oily passage 124b, follows shoe cream room 112 pressure to reduce, and shoe cream room 112 pastas rise.Height difference Δ H reflects the pressure difference Δ P between above-mentioned two cavitys between shoe cream room 112 pastas and first motor cavity, 113 pastas.
Follow operating conditions stable, the circulation of housing 11 internal gas tends to stable gradually with oil circulation, and fuel head difference trend is stable, and the pasta fluctuation fades away.Horizontal rotary compressor fuel feeding pasta is stable, and fuel feeding is continuous, and the compressor operating reliability improves.
Second embodiment
Referring to Fig. 7-Fig. 9, when pressure control device is used for Horizontai rotary compressor, second embodiment's the design proposal and first embodiment's design proposal main difference point is: the left side rotor end ring 115a that first embodiment is configured in the pressure control device of rotor 15 in rotor 15 left sides of Horizontai rotary compressor goes up, left side housing 11b side, just away from an end of main bearing 19; Second embodiment then be with pressure control device be configured in Horizontai rotary compressor rotor 15 right sides right side rotor end ring 115b on, just near an end of main bearing 19.
The right-hand member of rotor 15 is provided with right side rotor end ring 115b, cap bag 126 is arranged in second motor cavity 140, the base portion of cap bag 126 and right side rotor end ring 115b join, the central authorities of cap bag 126 are provided with positioning hole 223, positioning hole is set on the eccentric crankshaft 111, cap bag 126, right side rotor end ring 115b and eccentric crankshaft 111 surround right-hand member annular space 222 jointly, center hole 125 in the eccentric crankshaft 111 is a blind hole, one end of this center hole 125 communicates with right-hand member annular space 222 by the by-pass hole 221 that is arranged on the eccentric crankshaft 111, the other end of center hole 125 just has been communicated with the upper space of oily cap 114 and shoe cream room 112 simultaneously by the upper gas space of oily cap 114 connection shoe cream rooms 112.
The next door that cap bag 126 is provided with first fan blade, 217, the first fan blades that form along rotor 15 sense of rotation more than is provided with perforate 220, and perforate communicates with second motor cavity 140.When compressor operating, rotor 15 high speed rotating, first fan blade 217 that forms along sense of rotation produces whirlpool in the high speed rotating process, and whirlpool is centered close to above-mentioned right-hand member annular space 222, and its internal pressure is a minimum pressure.
The oil 122 of housing 11 bottoms is communicated with first motor cavity 113, second motor cavity 140 and shoe cream room 112 by the first oily passage 124a and the second oily passage 124b, follows the pressure of shoe cream room 112 to reduce, and shoe cream room 112 pastas rise.Height difference Δ H between shoe cream room 112 pastas and first motor cavity, 113 pastas reflects the pressure difference Δ P between above-mentioned two cavitys.Follow operating conditions stable, the internal gas circulation of housing 11 tends to stable gradually with oil circulation, and fuel head difference trend is stable, and the pasta fluctuation fades away.
In the present embodiment, the exhaust passage is arranged on first motor cavity, 113 sides.
All the other are not stated part and see first embodiment, no longer repeat.
The 3rd embodiment
Referring to Figure 10, when pressure control device is used for the vertical rotating compressor, the upper end of the rotor 15 of vertical rotating compressor is provided with upside rotor end ring 315a, cap bag 126 is arranged in first motor cavity 113, the base portion of cap bag 126 and upside rotor end ring 315a join, cap bag 126 surrounds top ring space 321 jointly with upside rotor end ring 315a, center hole 125 in the eccentric crankshaft 111 is a through hole, one end of this center hole 125 is communicated with top ring space 321, the other end of center hole 125 is communicated with shoe cream room 112, cap bag 126 is provided with first fan blade 217 that forms along the rotor rotation direction more than, the next door of first fan blade is provided with perforate 220, and perforate communicates with first motor cavity 113.
Present embodiment is with first embodiment's difference: because present embodiment is applied to the vertical rotating compressor, so be set in the oily cap on the supplementary bearing and manage accordingly or the hole has been cancelled.After the vertical rotating compressor increased this pressure control device, during rotor rotation, the pressure of the center hole 125 of bent axle further reduced, and is more favourable to oiling of the bent axle oil supply hole 224 that is connected with center hole 125.Cause the overpressure of center hole 125 in the time of simultaneously avoiding high-pressure leakage, oil can't be from the bent axle oil supply hole 224 outside failure phenomenons of supplying with.
For telling the bigger machine of oil mass, oil may directly be ejected in first motor cavity 113 from center hole 125, cause oil mass increase, decrease in efficiency in the refrigerant circulation, and after setting up this cap bag, oil is stopped by cap bag, be thrown out of from perforate 220 along the rotor rotation direction, run into the motor lines bag and flow back in the shoe cream room along the gap.Meanwhile, oil that process stator and gap between rotor move upward and refrigerant mixture are followed the whirlpool rotation that first blade on the cap bag produces, and reduce the compressor monomer effectively and tell oil mass, improve compressor performance and whole air-conditioning system performance.
More than, in pressure control device being arranged on second motor cavity 140, also can realize purpose of the present invention for pressure control device being arranged on the situation in first motor cavity 113.
Below situations that pressure control device is arranged in second motor cavity 140 simply introduce: rotary compressor is the vertical rotating compressor, the lower end of rotor 15 is provided with the downside rotor end ring, cap bag 126 is arranged in second motor cavity 140, the base portion of cap bag and downside rotor end ring join, the central authorities of cap bag are provided with positioning hole 223, positioning hole is set on the eccentric crankshaft 111, cap bag, downside rotor end ring and eccentric crankshaft surround the lower loop space jointly, center hole 125 in the eccentric crankshaft is a blind hole, one end of this center hole communicates with the lower loop space by the by-pass hole 221 that is arranged on the eccentric crankshaft, the other end of center hole is communicated with shoe cream room 112, cap bag is provided with first fan blade 217 that forms along the rotor rotation direction more than, the next door of first fan blade is provided with perforate 220, and perforate communicates with second motor cavity 140.
All the other are not stated part and see first embodiment, no longer repeat.
In sum, no matter be that the Horizontai rotary compressor or the fuel feeding pasta of vertical rotating compressor can both keep stable, fuel feeding is continuous, and Horizontai rotary compressor or vertical rotating compressor movement reliability are improved.
Claims (10)
1. the pressure control device of a rotary compressor comprises the compression assembly (12) and the electric machine assembly (13) that are arranged in the housing (11),
Enclosure interior is compressed assembly and electric machine assembly is separated into three chambers, be respectively at the shoe cream room between compression assembly and the housing (112), at first motor cavity (113) between electric machine assembly and the housing and second motor cavity (140) between compression assembly and electric machine assembly
Electric machine assembly comprises rotor (15) and stator (14), and rotor tip is provided with rotor end ring,
Compression assembly comprises cylinder (16), main bearing (19), supplementary bearing (110) and eccentric crankshaft (111), and the center of eccentric crankshaft is provided with center hole (125), and center hole communicates with shoe cream room,
It is characterized in that rotor end ring is provided with pressure control device, pressure control device comprises cap bag (126), cap bag and rotor end ring join, cap bag and rotor end ring surround the end ring space jointly, cap bag is provided with perforate (220) and first fan blade (217), the perforate and first motor cavity or second motor cavity communicate, and the end ring space communicates with an end of center hole.
2. the pressure control device of rotary compressor according to claim 1, it is characterized in that described rotary compressor is a Horizontai rotary compressor, rotor, (15) left end is provided with the left side rotor end ring, (115a), cap bag, (126) be arranged on first motor cavity, (113) in, the base portion of cap bag and left side rotor end ring join, cap bag and left side rotor end ring surround the left end annular space jointly, (121), eccentric crankshaft, (111) center hole in, (125) be through hole, one end of this center hole is communicated with the left end annular space
Supplementary bearing (110) and oily cap (114) are positioned at shoe cream room (112), the center socket of oily cap and supplementary bearing, and the top of oily cap is by the upper gas spatial communication of hole or pipe and shoe cream room, and oily cap is communicated with the other end of center hole (125),
Cap bag is provided with first fan blade (217) that forms along the rotor rotation direction more than, and the next door of first fan blade is provided with perforate (220), and perforate communicates with first motor cavity.
3. the pressure control device of rotary compressor according to claim 2, it is characterized in that described cap bag (126) is provided with left side equilibrium block (120a), the base portion of cap bag is provided with the brim of a hat (126.1), the left side equilibrium block is crimped on the brim of a hat, after one end of locating column (118) passes the left side equilibrium block and the brim of a hat successively, be fixed in the left side rotor end ring (115a).
4. the pressure control device of rotary compressor according to claim 1, it is characterized in that described rotary compressor is a Horizontai rotary compressor, the right-hand member of rotor (15) is provided with right side rotor end ring (115b), cap bag (126) is arranged in second motor cavity (140), the base portion of cap bag and right side rotor end ring join, the central authorities of cap bag are provided with positioning hole (223), positioning hole is set on the eccentric crankshaft (111), cap bag, right side rotor end ring and eccentric crankshaft surround right-hand member annular space (222) jointly, center hole in the eccentric crankshaft (125) is a blind hole, one end of this center hole communicates with the right-hand member annular space by the by-pass hole (221) that is arranged on the eccentric crankshaft
Supplementary bearing (110) and oily cap (114) are positioned at shoe cream room (112), the center socket of oily cap and supplementary bearing, and the top of oily cap is by the upper gas spatial communication of hole or pipe and shoe cream room, and oily cap is communicated with the other end of center hole (125),
Cap bag is provided with first fan blade (217) that forms along the rotor rotation direction more than, and the next door of first fan blade is provided with perforate (220), and perforate communicates with second motor cavity.
5. the pressure control device of rotary compressor according to claim 4, it is characterized in that described cap bag (126) is provided with right side equilibrium block (120b), the base portion of cap bag is provided with the brim of a hat (126.1), the right side equilibrium block is crimped on the brim of a hat, after one end of locating column (118) passes the right side equilibrium block and the brim of a hat successively, be fixed in the right side rotor end ring (115b).
6. the pressure control device of rotary compressor according to claim 4 is characterized in that the distance (d) between the external diameter of the internal diameter of described positioning hole (223) and eccentric crankshaft (111) is less than or equal to 1mm.
7. the pressure control device of rotary compressor according to claim 1, it is characterized in that described rotary compressor is a Horizontai rotary compressor, the exhaust passage of this Horizontai rotary compressor is arranged on a side of shoe cream room (112), first motor cavity (113) or second motor cavity (140).
8. the pressure control device of rotary compressor according to claim 1, it is characterized in that described rotary compressor is the vertical rotating compressor, rotor, (15) upper end is provided with the upside rotor end ring, (315a), cap bag, (126) be arranged on first motor cavity, (113) in, the base portion of cap bag and upside rotor end ring join, cap bag and upside rotor end ring surround the top ring space jointly, (321), eccentric crankshaft, (111) center hole in, (125) be through hole, one end of this center hole is communicated with the top ring space, the other end of center hole and shoe cream room, (112) be communicated with
Cap bag is provided with first fan blade (217) that forms along the rotor rotation direction more than, and the next door of first fan blade is provided with perforate (220), and perforate communicates with first motor cavity.
9. the pressure control device of rotary compressor according to claim 1, it is characterized in that described rotary compressor is the vertical rotating compressor, the lower end of rotor (15) is provided with the downside rotor end ring, cap bag (126) is arranged in second motor cavity (140), the base portion of cap bag and downside rotor end ring join, the central authorities of cap bag are provided with positioning hole (223), positioning hole is set on the eccentric crankshaft (111), cap bag, downside rotor end ring and eccentric crankshaft surround the lower loop space jointly, center hole in the eccentric crankshaft (125) is a blind hole, one end of this center hole communicates with the lower loop space by the by-pass hole (221) that is arranged on the eccentric crankshaft, the other end of center hole is communicated with shoe cream room (112)
Cap bag is provided with first fan blade (217) that forms along the rotor rotation direction more than, and the next door of first fan blade is provided with perforate (220), and perforate communicates with second motor cavity.
10. the application of the pressure control device of a rotary compressor as claimed in claim 1, it is characterized in that this pressure control device both can be applied in the rotary compressor of enclosure interior for low back pressure, can be applied in again in the rotary compressor that enclosure interior is a high back pressure; Both can be applied in the Horizontai rotary compressor, also can be applied in the vertical rotating compressor; Shoe cream room (112) and the pressure difference between first motor cavity (113) or second motor cavity (140) of following rotor (15) rotation can control enclosure interior are all the time stablized, and not influenced by enclosure interior pressure size.
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| CN2009100416707A CN101624987B (en) | 2009-08-01 | 2009-08-01 | Rotary compressor and application thereof |
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| CN2009100416707A CN101624987B (en) | 2009-08-01 | 2009-08-01 | Rotary compressor and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200131A (en) * | 2010-03-22 | 2011-09-28 | 乐金电子(天津)电器有限公司 | Discharging structure for reducing lubricant in compressor |
| CN101782069B (en) * | 2010-02-25 | 2012-07-04 | 西安庆安制冷设备股份有限公司 | Closed rotor compressor and method for manufacturing same |
| CN103994073A (en) * | 2014-05-22 | 2014-08-20 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN113090588B (en) * | 2020-01-09 | 2024-04-30 | 珠海格力电器股份有限公司 | Compressor, refrigeration system and bearing cavity liquid level adjusting method of compressor |
-
2009
- 2009-08-01 CN CN2009100416707A patent/CN101624987B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782069B (en) * | 2010-02-25 | 2012-07-04 | 西安庆安制冷设备股份有限公司 | Closed rotor compressor and method for manufacturing same |
| CN102200131A (en) * | 2010-03-22 | 2011-09-28 | 乐金电子(天津)电器有限公司 | Discharging structure for reducing lubricant in compressor |
| CN103994073A (en) * | 2014-05-22 | 2014-08-20 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN103994073B (en) * | 2014-05-22 | 2016-04-20 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN113090588B (en) * | 2020-01-09 | 2024-04-30 | 珠海格力电器股份有限公司 | Compressor, refrigeration system and bearing cavity liquid level adjusting method of compressor |
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| Publication number | Publication date |
|---|---|
| CN101624987B (en) | 2011-06-22 |
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