CN101684815B - Secondary rotary compressor - Google Patents
Secondary rotary compressor Download PDFInfo
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- CN101684815B CN101684815B CN 200810151922 CN200810151922A CN101684815B CN 101684815 B CN101684815 B CN 101684815B CN 200810151922 CN200810151922 CN 200810151922 CN 200810151922 A CN200810151922 A CN 200810151922A CN 101684815 B CN101684815 B CN 101684815B
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Abstract
The invention discloses a secondary rotary compressor which comprises a sealed container, a rotating shaft, a low-pressure compression combination, a high-pressure compression combination and a middle plate, wherein the rotating shaft is positioned in the sealed container and supplies engine oil while transmitting rotary force; the low-pressure compression combination carries out first compression on refrigerant by a low-pressure air cylinder when the rotating shaft rotates; the high-pressure compression combination carries out second compression on the refrigerant by a high-pressure air cylinder when the rotating shaft rotates; and the middle plate is arranged between the low-pressure air cylinder and the high-pressure air cylinder and provided with a high-pressure noise reducing groove on one side which is in contact with the high-pressure air cylinder. Because the upper surface and the lower surface of the middle plate which is in contact with the high-pressure air cylinder and the low-pressure air cylinder are respectively provided with the noise reducing grooves, the structure and the operation procedure can be simplified. In addition, the invention can also gather the noise reducing grooves in various shapes and form the noise reducing grooves at the position of a passage for discharging middle-pressure refrigerant or high-pressure refrigerant, thereby further reducing noise.
Description
Technical field
The present invention relates to a kind of rotary compressor, particularly a kind of secondary rotary compressor that can effectively reduce the discharge noise.
Background technique
Usually, compressor is after receiving power from power generating apparatus such as motor or motors, to air or refrigerant and multiple working fluid compress, can improve the mechanical device of its pressure, be widely used in the home appliances such as refrigerator, air-conditioning or the whole industrial field.
This compressor can be divided into reciprocating type compressor (Reciprocating compressor), rotary compressor (Rotary compressor) and turbocompressor (Scroll compressor) substantially; The reciprocating type compressor is to form the compression volume that can suck working fluid between piston and the cylinder, and piston carries out the straight line back and forth movement in cylinder interior and with this refrigerant compressed; Rotary compressor is to form the compression volume that can suck working gas between the roller of eccentric rotary and the cylinder, making roller carry out eccentric rotary along cylinder inner wall compresses refrigerant with this, turbocompressor is to form the compression volume that can suck working gas between movable orbiting scroll and the static vortex disk, and movable orbiting scroll compresses refrigerant with this along the static vortex disk rotation.
Above-mentioned rotary compressor develops into again rotating type double-body compressor (twin compressor) and secondary rotary compressor.Rotating type double-body compressor is provided with into two roller and cylinder in the upper and lower part, a pair of cylinder and roller compress respectively a part and the remaining part of whole power.Secondary rotary compressor is provided with two rollers and two cylinders in the upper and lower part, and two cylinders are interconnected, the refrigerant of a pair of cylinder and roller compression relatively low pressure, the relative refrigerant that has carried out the relatively high pressure of low pressure compression with the roller compression of another pair cylinder.
Among the Republic of Korea login special permission communique spy 1994-0001355, a kind of rotary compressor is disclosed.Be provided with motor in shell (Shell) inside, running shaft runs through motor.In addition, be provided with cylinder in the bottom of motor, be provided with the eccentric part that is entrenched in running shaft and the roller that is entrenched in eccentric part in cylinder interior.Be formed with refrigerant tap hole and refrigerant ostium at cylinder, between refrigerant tap hole and refrigerant ostium, be provided with the blade of the mutual mixed flow of high pressure refrigerant that prevents not compressed low pressure refrigerant and compressed.In addition, for the roller and the blade that make eccentric rotary are kept contact condition, be provided with spring at an end of blade.When motor rotated running shaft, eccentric part and roller compressed cold media air along the inner peripheral surface rotation of cylinder, and the cold media air that obtains compressing is discharged by the refrigerant tap hole.
Republic of Korea openly speciallys permit in the communique 10-2005-0062995, discloses a kind of rotating type double-body compressor.As shown in Figure 1, have two identical cylinders 1035 of power, 1045 and intermediate plate 1030, compare its power with 1 stage compressor and be doubled.
Republic of Korea openly speciallys permit in the communique 10-2007-0009958, discloses a kind of secondary rotary compressor.As shown in Figure 2, compressor 2001 is provided with the motor 2014 that comprises stator 2007 and rotor 2008 above closed container 2013 inside, and the running shaft 2002 that is connected with motor has two eccentric parts.Be as the criterion with running shaft 2002, from motor 2014 sides, be provided with main bearing 2009, high pressure compression structure 2020b, intermediate plate 2015, low pressure compression structure 2020a and supplementary bearing 2019 with stacking successively.In addition, also include the refrigerant that low pressure is compressed with compression structure 2020a and be fed to the intervalve 2040 that high pressure is used compression structure 2020b.
This secondary rotary compressor is in order to reduce the flow noise of refrigerant, low pressure with compression structure 2020a and 2040 contacted of intermediate plates, be formed with groove.As shown in Figure 3, be formed with the 1st reducing noise groove h1 in low pressure with cylinder 2010a.As shown in Figure 4, be formed with the 2nd reducing noise groove h2 at intermediate plate 2040.Above-mentioned the 1st, 2 reducing noise groove h1, h2 form a space, allow noise resonate.
But existing secondary rotary compressor is respectively formed at each reducing noise groove on low-pressure cylinder and the intermediate plate, and each groove need to be formed on the corresponding position exactly in order to be interconnected.Therefore flow chart and assembling procedure are numerous and diverse.And because the reducing noise groove is formed on the lower refrigerant of the pressure ratio mobile low-pressure cylinder and intermediate plate, therefore be difficult to reduce the noise that the high pressure refrigerant flows and causes.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the prior art shortcoming, provides a kind of and forms the reducing noise groove at parts, can simplify the secondary rotary compressor of flow chart; The present invention can also provide a kind of secondary rotary compressor that reduces by the mobile noise that causes of high pressure refrigerant simultaneously.
The technical solution adopted in the present invention is: a kind of secondary rotary compressor comprises closed container; Be positioned at closed container inside, the running shaft of supply machine oil when passing on rotating force; During the running shaft rotation, fit to the low pressure compressor units that refrigerant carries out the 1st compression by low-pressure cylinder; During the running shaft rotation, refrigerant is carried out the high pressure compressed assemblying body of the 2nd compression by high pressure cylinder; Be arranged between low-pressure cylinder and the high pressure cylinder, on the side that contacts with high pressure cylinder, be formed with the intermediate plate of high pressure reducing noise groove.
Described intermediate plate with the contacted another side of low-pressure cylinder, be formed with low voltage noise and reduce groove.
Described high pressure reducing noise groove and low voltage noise reduce groove and are positioned on the same axis.
Secondary rotary compressor also comprises and is formed with discharge space that refrigerant short time of making high pressure compressed assemblying body compression flows through and bearing and the cover of exhaust port; Described reducing noise groove is formed on the position near the bearing tap hole.
Described reducing noise fluted shaft has ledge structure to forming drop.
Beneficial effect of the present invention is: owing to form respectively the reducing noise groove in the above and below of high pressure cylinder and the contacted intermediate plate of low-pressure cylinder, not only can simplified construction, and can simplify flow chart.In addition, the present invention presses the position of refrigerant or high pressure coolant path in the middle of can also being formed on the reducing noise groove and discharge so that various shape is close, thereby can further reduce noise.
Description of drawings
Fig. 1 is the schematic representation of existing binary rotary compressor;
Fig. 2 is the schematic representation of existing secondary rotary compressor;
Fig. 3 and Fig. 4 are the cut-away section schematic representation of existing reducing noise groove and reducing noise groove;
Fig. 5 is the loop schematic representation that comprises secondary rotary compressor of the present invention;
Fig. 6 is secondary rotary compressor embodiment schematic representation of the present invention;
Fig. 7 is the fit schematic representation of secondary rotary compressor low pressure compressor units of the present invention;
Fig. 8 and Fig. 9 are the perspective exploded view of compressor bank zoarium of the present invention;
Figure 10 is the local vertical profile schematic representation of secondary rotary compressor of the present invention;
Figure 11 is secondary rotary compressor running shaft embodiment schematic representation of the present invention;
Figure 12 is respectively the axle side schematic representation that reducing noise groove of the present invention is arranged on intermediate plate and intermediate plate;
Figure 13 a is the noise level graph of a relation relevant with reducing noise groove position frequency of okperation with 13b.
Among the figure
100: rotary compressor 110: motor 120: the low pressure compressor units is fit
130: high pressure compressed assemblying body 140: intermediate plate 141 142: the reducing noise groove
151: intake channel 152: outlet pipe 153: injection tube
180: internal path:
Embodiment
Below, with embodiment the present invention is elaborated by reference to the accompanying drawings.
It is the loop schematic representation that comprises secondary rotary compressor of the present invention.As shown in Figure 5, refrigerating circuit comprises secondary rotary compressor 100, condenser 300, vaporizer 400, gas-liquid separator (phaseseperator) 500, four-way valve 600 parts such as grade.Wherein, condenser 300 consists of indoor unit, and compressor 100, vaporizer 400, gas-liquid separator 500 consist of outdoor unit.The refrigerant of compressor 100 compressions flows through the condenser 300 that four-way valve 600 flow into indoor set, and the cold media air of compression and surrounding atmosphere are carried out heat exchange, condensation is occured.The refrigerant that obtains condensation is transformed into low pressure refrigerant when flowing through expansion valve.The refrigerant that flows through expansion valve obtains gas-liquid separation in gas-liquid separator 500, liquid refrigerants flows into vaporizer 400; Liquid refrigerants carries out heat exchange and evaporates in vaporizer 400, flow into liquid container 200 with gaseous state.Above-mentioned refrigerant flows through liquid container 200, compressor 100, refrigerant intake channel 151, again flows into low pressure compressor units fit (not shown).In addition, the gaseous coolant that obtains separating in gas-liquid separator 500 flows into compressor 100 by injecting (INJECTION) pipe 153.The refrigerant of pressing refrigerant in the middle of in the low pressure compressor units zoarium of compressor 100, obtaining compressing and flowing into by injection tube 153, obtain compression after flowing into the high pressure compressed assemblying body (not shown) of compressor 100, again by refrigerant discharge tube 152 discharged to compressor 100 outsides.
Fig. 6 is secondary rotary compressor embodiment schematic representation of the present invention.Secondary rotary compressor 100 of the present invention begins to be provided with successively low pressure compressor units zoarium 120, intermediate plate 140, high pressure compressed assemblying body 130 and motor 110 in the inside of closed container 101 from the bottom.In addition, also comprise the refrigerant intake channel 151 that runs through closed container 101, is connected with liquid container 200, and the refrigerant discharge tube 152 of compression refrigerant discharged to the outside.
Low pressure compressor units fit 120 is connected with the refrigerant intake channel 151 that runs through closed container 101 from the outside.In addition, be provided with lower bearing 161 and lower cover 171 in the bottom of low pressure compressor units zoarium 120, press chamber Pm in the middle of between lower bearing 161 and lower cover 171, being formed with.The middle chamber Pm that presses is the space that the refrigerant that obtains compressing in low pressure compressor units zoarium 120 is discharged from, the middle chamber Pm of pressure flows into the space of keeping in before the high pressure compressed assemblying body 130 as refrigerant, plays the buffer space of coolant path between low pressure compressor units fit 120 and high pressure compressed assemblying body 130.
Below, the structure of making of pressing chamber Pm to be formed on lower bearing 161 to the centre describes.As the first embodiment, lower bearing 161 inserts and is arranged on the central part of running shaft 113 and the periphery that joins with lower cover 171, has respectively the shape of downward protrusion.Lower cover 171 is formed with the hole that running shaft 113 is run through, and has the writing board shape with lower bearing 161 close contacts.Here, the periphery of the downward protrusion of lower bearing 161 is assembled on the low-pressure cylinder 121 by bolt with the smooth periphery of lower cover 171.As embodiment 2, the central part that lower bearing 161 only has insertion that running shaft 113 is set protrudes downwards, and its outer part has flat structures, and lower cover 171 is formed with that the central part that makes the hole that running shaft 113 runs through has flat structures and its periphery is protruding upward, form ledge structure.Here, the smooth periphery of lower bearing 161 is assembled on the low-pressure cylinder 121 by bolt with the step-like periphery protruding upward of pressing of lower cover 171.At this moment, the shape that can simplify lower bearing 161 reduces the number of working processes, also can easily make lower cover 171 by punch process.The content constraints of putting down in writing above the shape of lower bearing 161 and lower cover 171 and assembling method are not subjected to.Here press structure that chamber Pm is formed on lower bearing 161 to be illustrated as example take the centre.But press chamber Pm also can be formed on some in upper bearing 162 or the intermediate plate 140 in the middle of above-mentioned.
The upper bearing 162 on high pressure compressed assemblying body 130 tops is provided with exhaust port (not shown) on the top of high pressure compressed assemblying body 130.The high pressure refrigerant that exhaust port by upper bearing 162 is discharged from high pressure compressed assemblying body 130, the refrigerant discharge tube 152 by being positioned at closed container 101 tops is discharged to the outside.
Inside at lower bearing 161, low pressure compressor units zoarium 120, intermediate plate 140 and high pressure compressed assemblying body 130 is formed with internal path 180, makes refrigerant flow to high pressure compressed assemblying body 130 from low pressure compressor units zoarium 120.Above-mentioned internal path 180 is substantially parallel with the axle of compressor, erectly arranges.Therefore internal path 180 is not independent pipe, and the refrigerant that separates of above-mentioned gas-liquid separator 500 flows into injects the random position that pipe 153 can be arranged on internal path 180.Such as, can be arranged on some in lower bearing 161, intermediate plate 140 or the high pressure cylinder of pressing chamber Pm in the middle of forming, form penetration hole (not shown) after, injection tube 153 is inserted in the above-mentioned penetration hole, cold media air is flowed into, and then can further improve compression efficiency.
Fig. 7 is the fit schematic representation of secondary rotary compressor low pressure compressor units of the present invention.As shown in Figure 7, low pressure compressor units zoarium 120 comprises that low-pressure cylinder 121, low pressure eccentric part 122, low pressing roller 123, low pressure blade 124, low pressure elastic member 125, lowpressure stream hand-hole 126 and middle pressure portal 127.Running shaft 113 passes the central part of low-pressure cylinder 121, at the fixing low pressure eccentric part 122 of running shaft 113.Here, low pressure eccentric part 122 can be integrally formed on the running shaft 113.In addition, rotatably be provided with low pressing roller 123 on low pressure eccentric part 122, low pressing roller 123 rollably rotates along the inner peripheral surface of low-pressure cylinder 121 during running shaft 113 rotation.Be formed with lowpressure stream hand-hole 126 in the both sides of low pressure blade 124 and middle pressure portals 127.In addition, the space in low-pressure cylinder 121 is divided by low pressure blade 124 and low pressing roller 123, compresses forward and backward refrigerant and coexists as in the low-pressure cylinder 121.Divided by low pressure blade 124 and low pressing roller 123, comprise that the part of low pressure refrigerant ostium 126 is called the low pressure refrigerant inflow S of section
1Press refrigerant discharge portion Dm with portal 127 part of middle pressure in the middle of being called.Here, low pressure elastic member 125 provides elastic force in order to allow low pressure blade 124 and low pressing roller 123 keep contact condition to low pressure blade 124.Be formed on the vane hole 124h of low-pressure cylinder 121 for low pressure blade 124 is installed, laterally be penetratingly formed on the low-pressure cylinder 121.Movement by vane hole 124h guide blades 124 extends to closed container 101 and provide the low pressure elastic member 125 of elastic force to run through low-pressure cylinder 121 to low pressure blade 124.One end of low pressure elastic member 125 contacts with low pressure blade 124, and the other end contacts with closed container 101, pushes away low pressure blade 124 in the mode that can make low pressure blade 124 and low pressing roller 123 keep contact condition.
In addition, on low-pressure cylinder 121, press intercommunicating pore 120a in the middle of being formed with, make the refrigerant that obtains compressing in the low pressure compressor units zoarium 120, flow through be formed on lower bearing 161 in the middle of press chamber Pm to flow into high pressure compressed assemblying body 130.The middle intercommunicating pore 120a that presses is overlapped in order to prevent with the refrigerant intake channel 151 that is inserted into lowpressure stream hand-hole 126, that is, can avoid the overlapping structure of internal path 180 and refrigerant intake channel 151, internal path 180 forms with refrigerant intake channel 151 with staggering.Even with refrigerant intake channel 151 overlapping parts, also be to form with the structure that the centre presses refrigerant to press chamber Pm to flow to high pressure compressed assemblying body 130 from the centre.But this moment, internal path 180 can cause compression loss with the overlapping sectional area of refrigerant intake channel 151, therefore also non-optimum structure.In addition, refrigerant is circuitous around the refrigerant intake channel 151 time, might reduce pressure.
As shown in Figure 7, low pressure eccentric part 122 also is rotated when running shaft 113 rotation, and low pressing roller 123 rolls along low-pressure cylinder 121 inwalls.At this moment, it is large that the volume of the low pressure inflow S1 of section becomes, and makes the low pressure inflow S1 of section be in low-pressure state, and refrigerant flows into by lowpressure stream hand-hole 126.On the contrary, the middle volume of discharge portion Dm of pressing can diminish, and middlely presses the refrigerant in the discharge portion Dm to obtain compression, portals by middle pressure and 127 discharges.Along with low pressure eccentric part 122 and low pressing roller 123 continue rotation, the low pressure inflow S1 of section and the middle volume of discharge portion Dm of pressing continue to change, and every rotation is once discharged one time refrigerant.
Fig. 8 and Fig. 9 are the perspective exploded view of compressor bank zoarium of the present invention; Figure 10 is the local vertical profile schematic representation of secondary rotary compressor of the present invention., stack successively from the bottom and to be provided with low pressure compressor units zoarium 120, intermediate plate 140 and high pressure compressed assemblying body 130 to shown in Figure 10 such as Fig. 8.As previously mentioned, low pressure refrigerant flow into low-pressure cylinder 121 by refrigerant intake channel 151 and lowpressure stream hand-hole 126, portals 127 discharged to the space of being limited by fit 120 bottom surfaces of low pressure compressor units and lower bearing 161 and lower cover 171-centre pressure chamber Pm by middle pressure after compressed.Middle pressure portal 127 be formed with when overlapped with lower bearing 161 in the middle of the pressure 161h that portals, the portal bottom of 161h of pressures is provided with valve (not shown) in the middle of lower bearing 161, just presses chamber Pm discharged to the centre when pressing the refrigerant that compresses among the discharge portion Dm to reach certain pressure in the middle of the low pressure compressor units zoarium 120.Press the refrigerant of chamber Pm in the middle of being discharged to, again by be formed on lower bearing 161 in the middle of press intercommunicating pore 161a to flow through to be formed on low-pressure cylinder 121 in the middle of press intercommunicating pore 120a and be formed on intermediate plate 140 in the middle of press intercommunicating pore 140a, and the middle baric flow by high pressure cylinder 131 enters groove 130a and flow into high pressure compressed assemblying body 130.Press in the middle of on the lower bearing 161 intercommunicating pore 161a, low pressure compressor units zoarium in the middle of press intercommunicating pore 120a, intermediate plate 140 in the middle of press the middle baric flow of intercommunicating pore 140a and high pressure compressed assemblying body 130 to enter groove 130a, be formed on the internal path 180 that the refrigerant that obtains compressing flows through in low pressure compressor units zoarium 120.Here, the middle baric flow of high pressure compressed assemblying body 130 enters groove 130a and is communicated with high pressure cylinder 131 inner spaces, with the shape formation of tipper.Middle baric flow enters the part of groove 130a bottom and the middle intercommunicating pore 140a that presses of intermediate plate 140 is in contact with one another, and forms the part of internal path 180.Press refrigerant in the middle of obtaining compressing, flow into the inside of high pressure cylinder 131 by middle baric flow hand-hole 130a.Middle press refrigerant to flow into high pressure compressed assemblying bodys 130 by internal path 180 after, high pressure compressed assemblying body 130 presses refrigerant to be compressed into the high pressure refrigerant centre with the working principle identical with low pressure compressor units fit 120.
As mentioned above, press the internal path 180 that refrigerant flows through independently to manage formation in the middle of having, but it is formed on closed container 101 inside, can reduce noise like this, shorten internal path 180, therefore can reduce the loss of the refrigerant pressure that is caused by resistance.In addition, the above presses situation that chamber Pm is formed on lower bearing 161 to be illustrated as example take the centre.The middle chamber Pm that presses also can be formed on some in upper bearing 162 or the intermediate plate 140.At this moment, although concrete structure can be different, but can be formed on internal path 180 inside of two-stage compression assemblying body, by internal path 180 pressing the refrigerant water conservancy diversion in the middle of obtaining compressing in the low pressure compressor units zoarium 120 in high pressure compressed assemblying body 130.By said structure, press the water conservancy diversion path-length of refrigerant in the middle of can shortening, can reduce flow losses, owing to needn't through running through the connecting tube of closed container 101 inside, can also reduce noise and vibration.
Live internal path 180 for fear of refrigerant intake channel 151 strut rails, when observing from the top, the middle middle intercommunicating pore 140a of pressure of intercommunicating pore 120a, intermediate plate 140 and the middle baric flow of high pressure compressed assemblying body 130 of pressing that forms the low pressure compressor units zoarium 120 of internal path 180 enters groove 130a, mutually isolates with refrigerant intake channel 151.
Press intercommunicating pore 161a for fear of overlapping with the refrigerant intake channel 151 that is connected to low-pressure cylinder 121 in the middle of the lower bearing 161, need avoid the insertion position of refrigerant intake channel 151.Refrigerant intake channel 151 is inserted in the lowpressure stream hand-hole 126 of low-pressure cylinder 121.Lowpressure stream hand-hole 126 is near the low pressure blade patchhole 124h that is used for inserting low pressure blade 124.Above-mentioned lowpressure stream hand-hole 126 from low pressure blade 124 more away from, the dead point that low-pressure cylinder 121 inner spaces can not compression refrigerant is just larger.
In addition, enter groove 130a at the middle baric flow of high pressure cylinder 131 and do not extend through top from the bottom of high pressure cylinder 131, but arrange from the lower tilt ground of high pressure cylinder 131.Here, middle baric flow enters the described high pressure vane hole 134h that groove 130a is positioned at close high pressure blade (not shown), and the high pressure vane hole 134h that the high pressure blade inserts presses assemblying body identical with low pressure, middle baric flow hand-hole 130a will be advisable near high pressure blade (not shown), and this can reduce the dead point in high pressure cylinder 131 inner spaces.
Press in the middle of the low-pressure cylinder 121 intercommunicating pore 120a and intermediate plate 140 in the middle of when pressing intercommunicating pore 140a to have helix structure, refrigerant flow through low-pressure cylinder 121 in the middle of press intercommunicating pore 120a and intermediate plate 140 in the middle of when pressing intercommunicating pore 140a suffered resistance can diminish.Certainly, press the middle intercommunicating pore 140a that presses of intercommunicating pore 120a and intermediate plate 140 not only can be helix structure in the middle of the low-pressure cylinder 121, can also have the constant shapes such as circular arc of top and bottom height.
In addition, when the middle pressure intercommunicating pore 140a of pressure intercommunicating pore 120a and intermediate plate 140 has spiral or arc structure in the middle of the low-pressure cylinder 121, can in the middle of spirality or arc, press core formation assembly hole 120b, the 140b of intercommunicating pore 120a, 140a.Lower bearing 161, low-pressure cylinder 121, intermediate plate 140, high pressure cylinder 131, upper bearing 162 are assembled by bolt usually.Here, refrigerant intake channel 151 will be avoided, middle intercommunicating pore 161a, 120a, 130a, the middle baric flow of pressing enters groove 140a and middle pressure multiple parts and the internal paths such as 127 of portalling in the formation position of assembly hole 161b, the 120b of erection bolt, 130b, 140b, 162b.In addition, assembly hole 161b, 120b, 130b, 140b, 162b will be formed with three places at least, satisfy the condition that can be distributed to assembling force equably whole compressor bank zoarium 105.Here, press the middle intercommunicating pore 140a that presses of intercommunicating pore 120a and intermediate plate 140 in the middle of the low-pressure cylinder 121, entering groove 130a with the middle baric flow of pressing intercommunicating pore 161a and high pressure cylinder 131 in the middle of the lower bearing 161 compares, its length is longer, therefore can hinder to be formed with a plurality of assembly hole 161b, 120b, 130b, 140b, 162b.Thereby, press in the middle of the low-pressure cylinder intercommunicating pore 120a and intermediate plate 140 in the middle of when pressing intercommunicating pore 140a to form the shape such as spirality or circular arc, can in spirality or circular arc, be formed centrally assembly hole 161b, 120b, 130b, 140b, 162b, therefore be conducive to assembly hole 161b, 120b, 130b, 140b, 162b decentralized configuration on whole compressor bank zoarium 105.
Figure 11 is secondary rotary compressor running shaft embodiment schematic representation of the present invention.As shown in figure 11, be combined with low pressure eccentric part 122 and high pressure eccentric part 132 at running shaft 113.Low pressure eccentric part 122 and high pressure eccentric part 132 are in order to reduce vibration, and the phase difference that usually has 180 degree is combined on the running shaft 113.In addition, running shaft 113 is the inner empty quill shafts that are, on the top of the bottom of low pressure eccentric part 122 and high pressure eccentric part 132, be formed with machine oil intercommunicating pore 113a.In addition, in the internal holes 113h of running shaft 113, insert thin board type stirrer (stirrer) 113b by helically bent.Stirrer 113b is embedded among the internal holes 113h of running shaft 113, thereupon together rotation when running shaft 113 rotation.At this moment, the machine oil of closed container 101 bottoms upwards flows along stirrer 113b, a part is by being formed on the machine oil intercommunicating pore 113a of running shaft 113, flow out on low-pressure cylinder 121, intermediate plate 140 and the high pressure cylinder 131 parts such as lubricated low pressing roller 123 and high pressing roller (not shown).
Figure 12 is respectively the axle side schematic representation that reducing noise groove of the present invention is arranged on intermediate plate and intermediate plate.Such as Fig. 8, Fig. 9 and shown in Figure 12, the reducing noise groove comprises that the high pressure reducing noise groove 141 and the low voltage noise that are respectively formed at low-pressure cylinder 121, high pressure cylinder 131 contacted intermediate plates 140 top and bottom reduce groove 142.High pressure reducing noise groove 141 and low voltage noise reduce groove 142 and are positioned on the same axis.
Particularly, high/low pressure reducing noise groove 141 and 142 is preferably disposed on the position near the compression refrigerant drain passageway in order to reduce the flow noise of high pressure refrigerant.Say that specifically high pressure reducing noise groove 141 is positioned at the position near upper bearing 162 exhaust ports of discharging the high pressure cylinder 131 high pressure tap holes 137 of compression refrigerant from high pressure cylinder 131 and being communicated with it.Low voltage noise reduce groove 142 be positioned near pressures in the middle of the low-pressure cylinder 121 portal 127 and the lower bearing 161 that is communicated with it in the middle of the portal position of 161h of pressures.That is, in order to reduce the compression blind spot volume in high pressure compressed space, the high pressure tap hole 137 of high pressure cylinder 131 is near high pressure vane hole 134h.Therefore high pressure reducing noise groove 141 perhaps is formed in the angular range of spending with high pressure vane hole 134h formation 0～45 and is advisable also near high pressure vane hole 134h.In like manner, the middle pressure of low-pressure cylinder 121 portals 127 also near low pressure blade hole 124h.Therefore low voltage noise reduces groove 142 also near low pressure blade hole 124h, perhaps is formed in the angular range of spending with low pressure blade hole 124h formation 0～45 and is advisable.
In sum, high pressure reducing noise groove 141 is formed on the end face of intermediate plate 140, is combined, forms the high pressure noise space with the bottom surface of high pressure cylinder 131.And low voltage noise reduces the bottom surface that groove 142 is formed on intermediate plate 140, is combined, forms the low voltage noise space with the end face of low-pressure cylinder 121.In order to allow the noise of multiple frequency band resonate, the axial depth that the high pressure reducing noise groove 141 in above-mentioned high pressure noise space and low voltage noise space and low voltage noise reduce groove 142 forms drop, and perhaps the top and bottom with intermediate plate 140 are as the criterion, consist of to variable-magnitude.
Thereby, upper bearing 162 and upper lid 172 are fixed on closed container 101 interior rear flank, lower cover 171, lower bearing 161, low-pressure cylinder 121, intermediate plate 140 and high pressure cylinder 131 are set from the bottom with beginning to stack, the high/low pressure reducing noise groove 141 of intermediate plate 140 and 142 and high pressure cylinder 131 and low-pressure cylinder 121 in conjunction with, form the resonant space that the degree of depth and amplitude change.
When the secondary rotary compressor with said structure carries out the refrigerant compression, in low-pressure cylinder 121 through the refrigerant of the 1st compression, by middle the pressure of low-pressure cylinder 121 portal 127, the 161h discharge is portalled in the middle pressure of lower bearing 161.At this moment, middle discharge noise of pressing refrigerant obtains resonance in the low voltage noise space that is formed by intermediate plate 140 low voltage noise reduction groove 142 and low-pressure cylinder 121 bottom surfaces, decay.And the high pressure refrigerant that high pressure cylinder 131 is discharged.Discharge by the high pressure tap hole 137 of high pressure cylinder 131, the exhaust port of upper bearing 162.At this moment, the discharge noise of high pressure refrigerant, in the high pressure noise space that high pressure reducing noise groove 141 and high pressure cylinder 131 end faces by intermediate plate 140 form, obtain resonance, be attenuated.
Figure 13 a is the noise level graph of a relation relevant with reducing noise groove position frequency of okperation with 13b.When the reducing noise groove is respectively formed on intermediate plate and the upper bearing, shown in Figure 13 a, on 1k～6.3k working band, the noise of the highest generation 63dB.On the contrary, when the reducing noise groove is formed on the above and below of intermediate plate, shown in Figure 13 b, on the working band of 1k～6.3k, the highest noise that produces 58dB.
It is worthy of note that scope of the present invention is not limited to above-mentioned specific embodiment and accompanying drawing, protection domain should be as the criterion with claim.
Claims (1)
1. a secondary rotary compressor comprises closed container (101); Be positioned at closed container (101) inside, the running shaft (113) of supply machine oil when passing on rotating force; During running shaft (113) rotation, refrigerant is carried out the low pressure compressor units fit (120) of the 1st compression by low-pressure cylinder (121); During the running shaft rotation, refrigerant is carried out the high pressure compressed assemblying body (130) of the 2nd compression by high pressure cylinder (131); It is characterized in that: also comprise being arranged between low-pressure cylinder (121) and the high pressure cylinder (131), with on the side that high pressure cylinder (131) contacts, be formed with the intermediate plate (140) of high pressure reducing noise groove (141).
2. secondary rotary compressor according to claim 1 is characterized in that: described intermediate plate (140) with the contacted another side of low-pressure cylinder (121), be formed with low voltage noise and reduce groove (142).
3. secondary rotary compressor according to claim 2 is characterized in that: described high pressure reducing noise groove (141) and low voltage noise reduce groove (142) and are positioned on the same axis.
4. secondary rotary compressor according to claim 1 is characterized in that: also comprise the bearing (161,162) that is formed with discharge space that refrigerant short time of making high pressure compressed assemblying body (130) compression flows through and exhaust port and cover (171,172); Described reducing noise groove (141,142) is formed on the position near bearing (161,162) tap hole.
5. according to claim 1 to 4 described arbitrary secondary rotary compressors, it is characterized in that: described reducing noise groove (141,142) axially forms drop, has ledge structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810151922 CN101684815B (en) | 2008-09-27 | 2008-09-27 | Secondary rotary compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810151922 CN101684815B (en) | 2008-09-27 | 2008-09-27 | Secondary rotary compressor |
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| CN101684815A CN101684815A (en) | 2010-03-31 |
| CN101684815B true CN101684815B (en) | 2013-04-10 |
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|---|---|---|---|---|
| KR101679860B1 (en) * | 2010-07-14 | 2016-11-25 | 엘지전자 주식회사 | Compressor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218877A (en) * | 1997-11-29 | 1999-06-09 | 三星电子株式会社 | Rotary compressor cylinder assembly |
| CN1712726A (en) * | 2004-06-21 | 2005-12-28 | 乐金电子(天津)电器有限公司 | Silencer of closed compressor |
| CN1727685A (en) * | 2004-07-26 | 2006-02-01 | 乐金电子(天津)电器有限公司 | Silencing apparatus in exhaust uptake of compressor |
| CN1782399A (en) * | 2004-11-30 | 2006-06-07 | 日立家用电器公司 | Rotary 2 stage compressor |
-
2008
- 2008-09-27 CN CN 200810151922 patent/CN101684815B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218877A (en) * | 1997-11-29 | 1999-06-09 | 三星电子株式会社 | Rotary compressor cylinder assembly |
| CN1712726A (en) * | 2004-06-21 | 2005-12-28 | 乐金电子(天津)电器有限公司 | Silencer of closed compressor |
| CN1727685A (en) * | 2004-07-26 | 2006-02-01 | 乐金电子(天津)电器有限公司 | Silencing apparatus in exhaust uptake of compressor |
| CN1782399A (en) * | 2004-11-30 | 2006-06-07 | 日立家用电器公司 | Rotary 2 stage compressor |
Non-Patent Citations (2)
| Title |
|---|
| JP昭62-63193A 1987.03.19 |
| JP昭63-86391U 1988.06.06 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101684815A (en) | 2010-03-31 |
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