US20060057012A1 - Scroll compressor having function of preventing outflow of lubrication oil - Google Patents
Scroll compressor having function of preventing outflow of lubrication oil Download PDFInfo
- Publication number
- US20060057012A1 US20060057012A1 US11/211,430 US21143005A US2006057012A1 US 20060057012 A1 US20060057012 A1 US 20060057012A1 US 21143005 A US21143005 A US 21143005A US 2006057012 A1 US2006057012 A1 US 2006057012A1
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- United States
- Prior art keywords
- lubrication oil
- scroll compressor
- oil separating
- scroll
- refrigerant gas
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/026—Lubricant separation
Definitions
- the present invention relates to a scroll compressor having a function of preventing an outflow of lubrication oil, and particularly, to a scroll compressor having a function of preventing an outflow of lubrication oil capable of preventing lubrication oil from flowing out together with a refrigerant when the refrigerant in a casing is discharged to a discharge pipe.
- a scroll compressor is a high efficiency low noise compressor which is widely applied in the field of air conditioners, and has a structure that a refrigerant gas is successively compressed and discharged by continuously moving a plurality of compression chambers formed between a fixed scroll and an orbiting scroll toward the center portion of the orbiting scroll during the relative orbital movement of the fixed scroll and the orbiting scroll.
- FIG. 1 is a sectional view of a conventional scroll compressor.
- the conventional scroll compressor 1 includes: a casing 11 forming a hermetic receiving space therein; a compression part 41 received in the casing 11 , for compressing a refrigerant gas; and a motor part 31 installed in the casing 11 , for supplying a driving force to the compression part 41 .
- a suction pipe 13 for suction of a refrigerant gas is formed at one side of the casing 11 , and a discharge pipe 15 for discharge of a refrigerant gas is formed at its other side.
- An upper frame 21 and a lower frame 30 are separately installed at upper and lower portions of the casing 11 so as to support the compression part 41 and the motor part 31 .
- the motor part 31 is provided with a stator 33 installed in the casing 11 ; and a rotor 35 rotatably received/installed, centering around a rotary shaft 36 vertically disposed in the stator 33 .
- An eccentric portion 37 is formed at an upper portion of the rotary shaft 36 , and a lubrication oil supply path 38 for supplying lubrication oil 18 received in a lubrication oil storing portion 17 , a lower portion inside the casing 11 , to the compression part 41 is formed inside the rotary shaft 36 .
- a lubrication oil supply part 39 is formed at a lower portion of the rotary shaft 36 so that the lubrication oil 18 stored in the lubrication oil storing portion 17 can be supplied to the compression part 41 along the lubrication oil supply path 38 during the rotation of the rotary shaft.
- the compression part 41 includes a fixed scroll 43 having a wrap 44 of an involute shape and coupled to an upper side of the upper frame 21 , and an orbiting scroll 53 having a wrap 54 of an involute shape, forming a compression space of a refrigerant gas by being interlocked with the fixed scroll 43 , coupled with the eccentric part 37 and orbiting relative to the fixed scroll 43 .
- a discharge hole 45 for discharging the compressed refrigerant gas is formed at the center portion of an upper surface of the fixed scroll 43 .
- an object of the present invention is to provide a scroll compressor having a function of preventing an outflow of lubrication oil capable of improving compression performance of a compressor by reducing the occurrence of abrasion of each component by leaving the proper amount of lubrication oil in a casing all the time by efficiently preventing lubrication oil from flowing out together with a refrigerant gas when the refrigerant gas in the casing is discharged to a discharge pipe.
- a scroll compressor having a function of preventing an outflow of lubrication oil
- a casing forming a receiving space therein; a fixed scroll having a wrap of an involute shape and a discharge hole for discharging a compressed refrigerant gas, and disposed inside the casing; an orbiting scroll having a wrap of an involute shape and orbiting relatively to the fixed scroll by being interlocked with the fixed scroll; and a lubrication oil separating part disposed around the discharge hole, for separating lubrication oil from a refrigerant gas discharged through the discharge hole.
- the lubrication oil separating part comprises: a lubrication oil separating net having a netlike body and installed at an upper surface of the fixed scroll at which the discharge hole is formed; a lubrication oil separating plate installed at an upper portion of the lubrication oil separating net; and a refrigerant gas guide member installed outside the lubrication oil separating plate at a certain distance.
- An inclined surface is formed at an upper surface of the fixed scroll inside the lubrication oil separating net in order to gather the lubrication oil separated by the lubrication oil separating net.
- a lubrication oil return path is penetratingly formed at the fixed scroll so as to guide the lubrication oil flowing along the inclined surface.
- the lubrication oil return path communicates with an oil discharge hole formed at a thrust bearing of an upper frame.
- a lubrication oil guide is formed under the upper frame so as to guide the lubrication oil introduced from the lubrication oil return path to a lower portion of the casing.
- FIG. 1 is a longitudinal sectional view of a conventional scroll compressor
- FIG. 2 is a longitudinal sectional view of a scroll compressor having a function of preventing an outflow of lubrication oil in accordance with one embodiment of the present invention
- FIG. 3 is an enlarged view showing a main part of FIG. 2 ;
- FIG. 4 is a longitudinal sectional view of a scroll compressor having a function of preventing an outflow of lubrication oil in accordance with another embodiment of the present invention.
- FIG. 2 is a longitudinal sectional view having a function of preventing an outflow of lubrication oil in accordance with one embodiment of the present invention
- FIG. 3 is an enlarged view showing a main part of FIG. 2 .
- the scroll compressor 100 having a function of preventing an outflow of lubrication oil in accordance with one embodiment of the present invention includes: a casing 111 forming a receiving space therein; a fixed scroll 143 having a wrap 144 of an involute shape and a discharge hole 145 for discharging a compressed refrigerant gas, and disposed in the casing 111 ; an orbiting scroll 153 having a wrap 154 of an involute shape, orbiting relative to the fixed scroll 143 by being interlocked with the fixed scroll 143 , and compressing a refrigerant gas; and a lubrication oil separating part 161 disposed around the discharge hole 145 so as to separate only the lubrication oil from a refrigerant gas discharged through the discharge hole 145 of the casing 111 .
- the casing 111 has a hermetic receiving space therein, a suction pipe 113 for suction of a refrigerant gas is installed at one side of the casing 111 , and a discharge pipe 115 for discharge of the refrigerant gas is installed at its other side.
- a compression part 141 for compressing a refrigerant gas and a motor part 131 for providing a driving force to the compression part 141 are provided inside the casing 111 . Also, an upper frame 121 and a lower frame 130 are installed at upper and lower portions in the casing 111 so as to support the compression part 141 and the motor part 131 .
- the motor part 131 comprises: a stator 133 disposed in the casing 111 ; and a rotor 135 rotating about a rotary shaft 136 in the stator 133 .
- An eccentric portion 137 is formed at an upper end of the rotary shaft 136 so that the orbiting scroll 153 can be eccentrically driven.
- a lubrication oil supply path 138 is formed inside the rotary shaft 136 in order to supply the lubrication oil 118 received in a lower portion of the casing 111 toward the compression part 141 .
- a lubrication oil supply part 139 which can supply the lubrication oil 118 toward the compression part 141 during the rotation of the rotary shaft is provided at a lower portion of the rotary shaft 136 .
- the compression part 141 includes; a fixed scroll 143 having a wrap 144 of an involute shape and coupled to an upper side of the upper frame 121 ; and an orbiting scroll 153 having a wrap 154 of an involute shape, forming a compression space of a refrigerant gas by being interlocked with the fixed scroll 143 , and coupled to the eccentric portion 137 so as to eccentrically move with respect to the fixed scroll 143 .
- a lower portion of the orbiting scroll 153 is in contact with a thrust bearing 123 of the upper frame 121 , and the orbiting scroll 153 can orbit relative to the upperframe 121 .
- An oil discharge hole 125 is formed at one side of the thrust bearing 123 in a horizontal direction so as to discharge the lubrication oil 118 having moved upwardly along the lubrication oil supply path 138 .
- a lubrication oil return path 127 is formed between the fixed scroll 143 and the casing 111 , between the upper frame 121 and the casing 111 and between the stator 133 and the casing 111 , and the oil discharge hole 125 communicates with the lubrication oil return path 127 .
- a discharge hole 145 is formed at an upper portion of the center of the fixed scroll 143 so that a compressed refrigerant gas can be discharged therethrough.
- a lubrication oil separating part 161 is provided around the discharge hole 145 in order to separate the lubrication oil 118 discharged together with the refrigerant gas.
- the lubrication oil separating part 161 comprises: a lubrication oil separating plate 163 formed of a plate-shaped member and disposed to be distanced from the discharge hole 145 at a predetermined distance along a direction that a refrigerant gas is discharged; and a lubrication oil separating net 165 formed as a cylindrical netlike body having predetermined meshes.
- the size of the mesh of the lubrication oil separating net 165 is small enough to prevent the passing of the lubrication oil but big enough to allow the passing of the refrigerant gas.
- An inclined surface 147 is formed on an upper surface of the fixed scroll 143 in order to gather the lubrication oil 118 separated from the refrigerant gas by the lubrication oil separating part 161 . Accordingly, the lubrication oil 118 gathered by the lubrication oil separating part 161 is introduced into the lubrication oil return path 149 and 127 via the inclined surface 147 and then is supplied to the lubrication oil storing portion 117 .
- the orbiting scroll 153 makes an eccentric movement with respect to the fixed scroll 143 .
- the refrigerant gas sucked through the suction pipe 113 is compressed by moving toward the center of the fixed scroll 143 , and then is discharged through the discharge hole 145 .
- the refrigerant gas discharged in such a manner is discharged outside the casing 111 through the discharge pipe 115 .
- the lubrication oil having been discharged through the discharge hole together with the refrigerant gas is gathered in the lubrication oil separating part 161 by the lubrication oil separating net 165 , and the gathered lubricating oil 118 flows along the inclined surface 147 and is supplied to the lubrication oil storing portion 117 along the lubrication oil return path 149 and 127 .
- the gaseous refrigerant gas from which the lubricating oil 118 has been separated passes through the lubrication oil separating net 165 , is discharged outside the casing 111 through the discharge pipe 115 , and is circulated according to a freezing cycle.
- FIG. 4 is a sectional view of a scroll compressor having a function of preventing an outflow of lubricating oil in accordance with another embodiment of the present invention.
- the scroll compressor 200 having a function of preventing an outflow of lubrication oil in accordance with another embodiment of the present invention includes: a casing 211 forming a receiving space therein; a fixed scroll 243 having a wrap 244 of an involute shape and a discharge hole 245 for discharging a compressed fluid, and disposed in the casing 211 ; an orbiting scroll 253 having a wrap 254 of an involute shape and orbiting relative to the fixed scroll 243 by being interlocked with the fixed scroll 243 ; and a lubrication oil separating part 261 disposed around the discharge hole 245 so as to separate only lubrication oil 218 from a refrigerant gas discharged through the discharge hole 245 .
- a discharge hole 245 is formed at an upper portion of the center of the fixed scroll 243 so that a compressed refrigerant gas can be discharged. And a lubrication oil separating part 261 is formed around the discharge hole 245 so as to separate the lubrication oil 218 discharged together with the refrigerant gas.
- the lubrication oil separating part 261 includes: a lubrication oil separating plate 263 disposed to be distanced from the discharge hole 245 at a predetermined distance along a direction that a refrigerant gas is discharged; a lubrication oil separating net 265 formed as a netlike body with predetermined meshes; and a refrigerant gas guide member 273 disposed outside the lubrication oil separating plate 263 .
- the center of the refrigerant gas guide member 273 is open, and its lower end is fixed to an upper surface of the fixed scroll 243 .
- An oil discharge hole 225 is formed at one side of the thrust bearing 223 in order to discharge the lubrication oil 218 which has moved upwardly along a lubrication oil supply path 238 .
- the lubrication oil return path 227 is formed between the fixed scroll 243 and the casing 211 , between the upper frame 221 and the casing 211 and the stator 233 and the casing 211 .
- the oil discharge hole 225 communicates with the lubrication oil return path 227 .
- An inclined surface 247 is formed on an upper surface of the fixed scroll 243 in order to gather lubrication oil 218 separated from a refrigerant gas by the lubrication oil separating part 261 . Accordingly, the lubrication oil 218 gathered by the lubrication oil separating part 261 is introduced into the lubrication oil return path 249 and 227 via the inclined surface 247 and then is supplied to the lubrication oil storing portion 217 .
- a lubrication oil guide 275 is installed between the upper frame 221 and the lubrication oil storing portion 217 , and guides the lubrication oil 218 which is supplied toward the lubrication oil storing portion 217 along the lubrication oil return path 227 so that the lubrication oil 218 supplied toward the lubrication oil storing portion 217 is not mixed with a refrigerant gas.
- the compressor 200 having a function of preventing an outflow of lubrication oil in accordance with another embodiment of the present invention having such a structure, when power is applied to the motor part 231 and the rotor 235 rotates, the orbiting scroll 253 orbits with respect to the fixed scroll 243 , thereby compressing a refrigerant gas.
- the compressed refrigerant gas is discharged through the discharge hole 245 and then is discharged outside the casing 211 through the discharge pipe 215 .
- the lubrication oil 218 having been discharged through the discharge hole 245 together with the refrigerant gas is gathered in the lubrication oil separating part 261 by the lubrication oil separating net 265 .
- the gathered lubrication oil 218 flows along the inclined surface 247 and introduced into the lubrication oil return path 227 .
- the introduced lubrication oil 218 is guided by the lubrication oil guide 275 and thus is supplied to the lubrication oil storing portion 217 .
- the gaseous refrigerant gas from which the lubrication oil 218 has been separated by the lubrication oil separating part 261 passes through the lubrication oil separating net 265 , and is guided by the refrigerant gas guide member 273 to thereby be discharged outside the casing 211 through the discharge pipe 215 .
- the refrigerant gas discharged in such a manner is circulated according to a freezing cycle.
- the present invention can effectively prevent lubrication oil from flowing out of the casing through the discharge pipe together with a refrigerant gas when a refrigerant gas is discharged.
- the lubrication oil always remains in the casing, thereby reducing abrasion of each component. Accordingly, performance of each component can be improved, and thus compression performance of the compressor can be improved too.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
A scroll compressor having a function of preventing an outflow of lubrication oil comprises: a lubrication oil separating net installed at an upper surface of a fixed scroll; a lubrication oil separating plate installed at an upper portion of the lubrication oil separating net; and a refrigerant gas guide member installed outside the lubrication oil separating plate at a certain distance. Accordingly, lubrication oil is effectively prevented from flowing out of the casing through the discharge pipe together with a refrigerant gas when a refrigerant gas is discharged. Thus, the lubrication oil always remains in the casing, thereby reducing abrasion of each component. Thus, performance of each component can be improved, and thus compression performance of the compressor can be improved too.
Description
- 1. Field of the Invention
- The present invention relates to a scroll compressor having a function of preventing an outflow of lubrication oil, and particularly, to a scroll compressor having a function of preventing an outflow of lubrication oil capable of preventing lubrication oil from flowing out together with a refrigerant when the refrigerant in a casing is discharged to a discharge pipe.
- 2. Description of the Background Art
- In general, a scroll compressor is a high efficiency low noise compressor which is widely applied in the field of air conditioners, and has a structure that a refrigerant gas is successively compressed and discharged by continuously moving a plurality of compression chambers formed between a fixed scroll and an orbiting scroll toward the center portion of the orbiting scroll during the relative orbital movement of the fixed scroll and the orbiting scroll.
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FIG. 1 is a sectional view of a conventional scroll compressor. - As shown in
FIG. 1 , the conventional scroll compressor 1 includes: acasing 11 forming a hermetic receiving space therein; acompression part 41 received in thecasing 11, for compressing a refrigerant gas; and amotor part 31 installed in thecasing 11, for supplying a driving force to thecompression part 41. - A
suction pipe 13 for suction of a refrigerant gas is formed at one side of thecasing 11, and adischarge pipe 15 for discharge of a refrigerant gas is formed at its other side. - An
upper frame 21 and alower frame 30 are separately installed at upper and lower portions of thecasing 11 so as to support thecompression part 41 and themotor part 31. - The
motor part 31 is provided with astator 33 installed in thecasing 11; and arotor 35 rotatably received/installed, centering around arotary shaft 36 vertically disposed in thestator 33. - An
eccentric portion 37 is formed at an upper portion of therotary shaft 36, and a lubricationoil supply path 38 for supplyinglubrication oil 18 received in a lubricationoil storing portion 17, a lower portion inside thecasing 11, to thecompression part 41 is formed inside therotary shaft 36. - A lubrication
oil supply part 39 is formed at a lower portion of therotary shaft 36 so that thelubrication oil 18 stored in the lubricationoil storing portion 17 can be supplied to thecompression part 41 along the lubricationoil supply path 38 during the rotation of the rotary shaft. - The
compression part 41 includes afixed scroll 43 having awrap 44 of an involute shape and coupled to an upper side of theupper frame 21, and anorbiting scroll 53 having awrap 54 of an involute shape, forming a compression space of a refrigerant gas by being interlocked with thefixed scroll 43, coupled with theeccentric part 37 and orbiting relative to thefixed scroll 43. Adischarge hole 45 for discharging the compressed refrigerant gas is formed at the center portion of an upper surface of thefixed scroll 43. - The operation of the conventional scroll compressor having such a structure will now be described.
- When power is applied to the
motor part 31 and therotor 35 rotates about therotary shaft 36, theorbiting scroll 53 coupled to theeccentric portion 37 orbits with respect to thefixed scroll 43. At this time, the refrigerant gas sucked through thesuction pipe 13 moves toward the central portion of thefixed scroll 43, thereby being compressed. The compressed refrigerant gas is discharged through thedischarge hole 45, and then discharged outside the casing through thedischarge pipe 15. - After circulating according to a freezing cycle, the refrigerant gas having been discharged to the outside of the
casing 11 flows into thecasing 11 again through thesuction pipe 13. Such processes are repeated. - However, in the conventional scroll compressor having such construction, during the rotation of the
rotary shaft 36, thelubrication oil 18 having been supplied to thecompression part 41 along the lubricationoil supply path 38 is excessively discharged outside thecasing 11 through thedischarge pipe 15 together with the refrigerant gas compressed by thefixed scroll 43 and theorbiting scroll 53. Therefore, the lubrication oil filled to prevent abrasion of each component cannot be maintained in the necessary amount but becomes in short supply, which causes each component to be subject to abrasion and thus brings about deterioration of the performance of each part. As a result, the compression performance of the compressor is degraded. - Therefore, an object of the present invention is to provide a scroll compressor having a function of preventing an outflow of lubrication oil capable of improving compression performance of a compressor by reducing the occurrence of abrasion of each component by leaving the proper amount of lubrication oil in a casing all the time by efficiently preventing lubrication oil from flowing out together with a refrigerant gas when the refrigerant gas in the casing is discharged to a discharge pipe.
- To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a scroll compressor having a function of preventing an outflow of lubrication oil comprising: a casing forming a receiving space therein; a fixed scroll having a wrap of an involute shape and a discharge hole for discharging a compressed refrigerant gas, and disposed inside the casing; an orbiting scroll having a wrap of an involute shape and orbiting relatively to the fixed scroll by being interlocked with the fixed scroll; and a lubrication oil separating part disposed around the discharge hole, for separating lubrication oil from a refrigerant gas discharged through the discharge hole.
- The lubrication oil separating part comprises: a lubrication oil separating net having a netlike body and installed at an upper surface of the fixed scroll at which the discharge hole is formed; a lubrication oil separating plate installed at an upper portion of the lubrication oil separating net; and a refrigerant gas guide member installed outside the lubrication oil separating plate at a certain distance.
- An inclined surface is formed at an upper surface of the fixed scroll inside the lubrication oil separating net in order to gather the lubrication oil separated by the lubrication oil separating net.
- A lubrication oil return path is penetratingly formed at the fixed scroll so as to guide the lubrication oil flowing along the inclined surface.
- The lubrication oil return path communicates with an oil discharge hole formed at a thrust bearing of an upper frame.
- A lubrication oil guide is formed under the upper frame so as to guide the lubrication oil introduced from the lubrication oil return path to a lower portion of the casing.
- The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
- The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a unit of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
- In the drawings:
-
FIG. 1 is a longitudinal sectional view of a conventional scroll compressor; -
FIG. 2 is a longitudinal sectional view of a scroll compressor having a function of preventing an outflow of lubrication oil in accordance with one embodiment of the present invention; -
FIG. 3 is an enlarged view showing a main part ofFIG. 2 ; and -
FIG. 4 is a longitudinal sectional view of a scroll compressor having a function of preventing an outflow of lubrication oil in accordance with another embodiment of the present invention. - Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
-
FIG. 2 is a longitudinal sectional view having a function of preventing an outflow of lubrication oil in accordance with one embodiment of the present invention, andFIG. 3 is an enlarged view showing a main part ofFIG. 2 . - As shown, the
scroll compressor 100 having a function of preventing an outflow of lubrication oil in accordance with one embodiment of the present invention includes: acasing 111 forming a receiving space therein; afixed scroll 143 having awrap 144 of an involute shape and adischarge hole 145 for discharging a compressed refrigerant gas, and disposed in thecasing 111; anorbiting scroll 153 having awrap 154 of an involute shape, orbiting relative to thefixed scroll 143 by being interlocked with thefixed scroll 143, and compressing a refrigerant gas; and a lubricationoil separating part 161 disposed around thedischarge hole 145 so as to separate only the lubrication oil from a refrigerant gas discharged through thedischarge hole 145 of thecasing 111. - The
casing 111 has a hermetic receiving space therein, asuction pipe 113 for suction of a refrigerant gas is installed at one side of thecasing 111, and adischarge pipe 115 for discharge of the refrigerant gas is installed at its other side. - Inside the
casing 111, acompression part 141 for compressing a refrigerant gas and amotor part 131 for providing a driving force to thecompression part 141 are provided. Also, anupper frame 121 and alower frame 130 are installed at upper and lower portions in thecasing 111 so as to support thecompression part 141 and themotor part 131. - The
motor part 131 comprises: astator 133 disposed in thecasing 111; and arotor 135 rotating about arotary shaft 136 in thestator 133. - An
eccentric portion 137 is formed at an upper end of therotary shaft 136 so that theorbiting scroll 153 can be eccentrically driven. A lubricationoil supply path 138 is formed inside therotary shaft 136 in order to supply thelubrication oil 118 received in a lower portion of thecasing 111 toward thecompression part 141. A lubricationoil supply part 139 which can supply thelubrication oil 118 toward thecompression part 141 during the rotation of the rotary shaft is provided at a lower portion of therotary shaft 136. - The
compression part 141 includes; afixed scroll 143 having awrap 144 of an involute shape and coupled to an upper side of theupper frame 121; and anorbiting scroll 153 having awrap 154 of an involute shape, forming a compression space of a refrigerant gas by being interlocked with thefixed scroll 143, and coupled to theeccentric portion 137 so as to eccentrically move with respect to thefixed scroll 143. - A lower portion of the orbiting
scroll 153 is in contact with a thrust bearing 123 of theupper frame 121, and the orbitingscroll 153 can orbit relative to theupperframe 121. - An
oil discharge hole 125 is formed at one side of the thrust bearing 123 in a horizontal direction so as to discharge thelubrication oil 118 having moved upwardly along the lubricationoil supply path 138. - A lubrication
oil return path 127 is formed between thefixed scroll 143 and thecasing 111, between theupper frame 121 and thecasing 111 and between thestator 133 and thecasing 111, and theoil discharge hole 125 communicates with the lubricationoil return path 127. - Also, a
discharge hole 145 is formed at an upper portion of the center of thefixed scroll 143 so that a compressed refrigerant gas can be discharged therethrough. A lubricationoil separating part 161 is provided around thedischarge hole 145 in order to separate thelubrication oil 118 discharged together with the refrigerant gas. - The lubrication
oil separating part 161 comprises: a lubricationoil separating plate 163 formed of a plate-shaped member and disposed to be distanced from thedischarge hole 145 at a predetermined distance along a direction that a refrigerant gas is discharged; and a lubricationoil separating net 165 formed as a cylindrical netlike body having predetermined meshes. Here, the size of the mesh of the lubricationoil separating net 165 is small enough to prevent the passing of the lubrication oil but big enough to allow the passing of the refrigerant gas. - An
inclined surface 147 is formed on an upper surface of thefixed scroll 143 in order to gather thelubrication oil 118 separated from the refrigerant gas by the lubricationoil separating part 161. Accordingly, thelubrication oil 118 gathered by the lubricationoil separating part 161 is introduced into the lubricationoil return path inclined surface 147 and then is supplied to the lubricationoil storing portion 117. - In the
compressor 100 having a function of preventing an outflow of lubrication oil in accordance with one embodiment of the present invention having such a structure, when power is applied to themotor part 131 and therotor 135 rotates, theorbiting scroll 153 makes an eccentric movement with respect to thefixed scroll 143. And the refrigerant gas sucked through thesuction pipe 113 is compressed by moving toward the center of thefixed scroll 143, and then is discharged through thedischarge hole 145. The refrigerant gas discharged in such a manner is discharged outside thecasing 111 through thedischarge pipe 115. At this time, the lubrication oil having been discharged through the discharge hole together with the refrigerant gas is gathered in the lubricationoil separating part 161 by the lubricationoil separating net 165, and the gatheredlubricating oil 118 flows along theinclined surface 147 and is supplied to the lubricationoil storing portion 117 along the lubricationoil return path - At the same time, the gaseous refrigerant gas from which the
lubricating oil 118 has been separated passes through the lubricationoil separating net 165, is discharged outside thecasing 111 through thedischarge pipe 115, and is circulated according to a freezing cycle. -
FIG. 4 is a sectional view of a scroll compressor having a function of preventing an outflow of lubricating oil in accordance with another embodiment of the present invention. - As shown, the
scroll compressor 200 having a function of preventing an outflow of lubrication oil in accordance with another embodiment of the present invention includes: acasing 211 forming a receiving space therein; afixed scroll 243 having awrap 244 of an involute shape and adischarge hole 245 for discharging a compressed fluid, and disposed in thecasing 211; anorbiting scroll 253 having awrap 254 of an involute shape and orbiting relative to the fixedscroll 243 by being interlocked with the fixedscroll 243; and a lubricationoil separating part 261 disposed around thedischarge hole 245 so as to separateonly lubrication oil 218 from a refrigerant gas discharged through thedischarge hole 245. - A
discharge hole 245 is formed at an upper portion of the center of the fixedscroll 243 so that a compressed refrigerant gas can be discharged. And a lubricationoil separating part 261 is formed around thedischarge hole 245 so as to separate thelubrication oil 218 discharged together with the refrigerant gas. - The lubrication
oil separating part 261 includes: a lubricationoil separating plate 263 disposed to be distanced from thedischarge hole 245 at a predetermined distance along a direction that a refrigerant gas is discharged; a lubrication oil separating net 265 formed as a netlike body with predetermined meshes; and a refrigerantgas guide member 273 disposed outside the lubricationoil separating plate 263. The center of the refrigerantgas guide member 273 is open, and its lower end is fixed to an upper surface of the fixedscroll 243. - An
oil discharge hole 225 is formed at one side of the thrust bearing 223 in order to discharge thelubrication oil 218 which has moved upwardly along a lubricationoil supply path 238. - The lubrication
oil return path 227 is formed between thefixed scroll 243 and thecasing 211, between theupper frame 221 and thecasing 211 and thestator 233 and thecasing 211. Theoil discharge hole 225 communicates with the lubricationoil return path 227. - An
inclined surface 247 is formed on an upper surface of the fixedscroll 243 in order to gatherlubrication oil 218 separated from a refrigerant gas by the lubricationoil separating part 261. Accordingly, thelubrication oil 218 gathered by the lubricationoil separating part 261 is introduced into the lubricationoil return path inclined surface 247 and then is supplied to the lubricationoil storing portion 217. - A
lubrication oil guide 275 is installed between theupper frame 221 and the lubricationoil storing portion 217, and guides thelubrication oil 218 which is supplied toward the lubricationoil storing portion 217 along the lubricationoil return path 227 so that thelubrication oil 218 supplied toward the lubricationoil storing portion 217 is not mixed with a refrigerant gas. - In the
compressor 200 having a function of preventing an outflow of lubrication oil in accordance with another embodiment of the present invention having such a structure, when power is applied to themotor part 231 and therotor 235 rotates, theorbiting scroll 253 orbits with respect to the fixedscroll 243, thereby compressing a refrigerant gas. The compressed refrigerant gas is discharged through thedischarge hole 245 and then is discharged outside thecasing 211 through thedischarge pipe 215. - The
lubrication oil 218 having been discharged through thedischarge hole 245 together with the refrigerant gas is gathered in the lubricationoil separating part 261 by the lubricationoil separating net 265. The gatheredlubrication oil 218 flows along theinclined surface 247 and introduced into the lubricationoil return path 227. The introducedlubrication oil 218 is guided by thelubrication oil guide 275 and thus is supplied to the lubricationoil storing portion 217. - At the same time, the gaseous refrigerant gas from which the
lubrication oil 218 has been separated by the lubricationoil separating part 261 passes through the lubricationoil separating net 265, and is guided by the refrigerantgas guide member 273 to thereby be discharged outside thecasing 211 through thedischarge pipe 215. The refrigerant gas discharged in such a manner is circulated according to a freezing cycle. - As so far described, the present invention can effectively prevent lubrication oil from flowing out of the casing through the discharge pipe together with a refrigerant gas when a refrigerant gas is discharged. Thus, the lubrication oil always remains in the casing, thereby reducing abrasion of each component. Accordingly, performance of each component can be improved, and thus compression performance of the compressor can be improved too.
- As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalence of such metes and bounds are therefore intended to be embraced by the appended claims.
Claims (13)
1. A scroll compressor having a function of preventing an outflow of lubrication oil comprising:
a casing forming a receiving space therein;
a fixed scroll having a wrap of an involute shape and a discharge hole for discharging a compressed refrigerant gas, and disposed inside the casing;
an orbiting scroll having a wrap of an involute shape and orbiting relative to the fixed scroll by being interlocked with the fixed scroll; and
a lubrication oil separating part disposed around the discharge hole, for separating lubrication oil from a refrigerant gas discharged through the discharge hole.
2. The scroll compressor of claim 1 , wherein the lubrication oil separating part comprises:
a lubrication oil separating net having a netlike body and installed at an upper surface of the fixed scroll at which the discharge hole is formed; and
a lubrication oil separating plate installed at an upper portion of the lubrication oil separating net.
3. The scroll compressor of claim 2 , wherein a refrigerant gas guide member is installed outside the lubrication oil separating plate at a certain distance.
4. The scroll compressor of claim 1 , wherein the lubrication oil separating part comprises:
a lubrication oil separating net having a mesh structure and disposed to encompass the discharge hole.
5. The scroll compressor of claim 2 , wherein an inclined surface is formed at an upper surface of the fixed scroll inside the lubrication oil separating net in order to gather the lubrication oil separated by the lubrication oil separating net.
6. The scroll compressor of claim 5 , wherein a lubrication oil return path is penetratingly formed at the fixed scroll so as to guide the lubrication oil flowing along the inclined surface.
7. The scroll compressor of claim 6 , wherein the lubrication oil return path communicates with an oil discharge hole formed at a thrust bearing of an upper frame.
8. The scroll compressor of claim 7 , wherein a lubrication oil guide is installed under the upper frame so as to guide the lubrication oil introduced from the lubrication oil return path to a lower portion of the casing.
9. A scroll compressor having a function of preventing an outflow of lubrication oil comprising:
a lubrication oil separating net installed at an upper surface of a fixed scroll;
a lubrication oil separating plate installed at an upper portion of the lubrication oil separating net; and
a refrigerant gas guide member installed outside the lubrication oil separating plate at a certain distance.
10. The scroll compressor of claim 9 , wherein an inclined surface is formed at an upper surface of the fixed scroll inside the lubrication oil separating net in order to gather the lubrication oil separated by the lubrication oil separating net.
11. The scroll compressor of claim 10 , wherein a lubrication oil return path is penetratingly formed at the fixed scroll so as to guide the lubrication oil flowing along the inclined surface.
12. The scroll compressor of claim 11 , wherein the lubrication oil return path communicates with an oil discharge hole formed at a thrust bearing of an upper frame.
13. The scroll compressor of claim 12 , wherein a lubrication oil guide is formed under the upper frame so as to guide the lubrication oil introduced from the lubrication oil return path to a lower portion of the casing.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR73089/2004 | 2004-09-13 | ||
KR1020040073089A KR100619741B1 (en) | 2004-09-13 | 2004-09-13 | Scroll compressor with oil discharge reduction function |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060057012A1 true US20060057012A1 (en) | 2006-03-16 |
Family
ID=36162551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/211,430 Abandoned US20060057012A1 (en) | 2004-09-13 | 2005-08-26 | Scroll compressor having function of preventing outflow of lubrication oil |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060057012A1 (en) |
JP (1) | JP4943680B2 (en) |
KR (1) | KR100619741B1 (en) |
CN (1) | CN100398827C (en) |
DE (1) | DE102005040971B4 (en) |
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US20060257273A1 (en) * | 2005-05-16 | 2006-11-16 | Copeland Corporation | Open drive scroll machine |
US20080008612A1 (en) * | 2006-07-06 | 2008-01-10 | Lg Electronics Inc. | Muffler of scroll compressor |
US20080170957A1 (en) * | 2007-01-15 | 2008-07-17 | Seon-Woong Hwang | Compressor and oil separating device therefor |
US20080175738A1 (en) * | 2007-01-19 | 2008-07-24 | Jung Chul-Su | Compressor and oil blocking device therefor |
US20080206084A1 (en) * | 2007-02-23 | 2008-08-28 | Yang-Hee Cho | Compressor and oil separation device therefor |
US20090238703A1 (en) * | 2006-09-08 | 2009-09-24 | Chan-Hwa Jeong | Scroll compressor |
US20100132389A1 (en) * | 2007-05-02 | 2010-06-03 | Daikin Industries, Ltd. | Compressor and refrigeration apparatus using the same |
US7942656B2 (en) | 2007-03-21 | 2011-05-17 | Lg Electronics Inc. | Compressor and device for reducing vibration therefor |
US8133300B1 (en) | 2008-07-31 | 2012-03-13 | S&R Compression, LLC | Systems and methods for oil/gas separation |
US20150285137A1 (en) * | 2012-11-08 | 2015-10-08 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Device for driving an ancillary unit of an internal combustion engine |
US10895260B2 (en) * | 2017-05-12 | 2021-01-19 | Lg Electronics Inc. | Scroll compressor with oil separation member |
CN114857009A (en) * | 2022-06-06 | 2022-08-05 | 珠海格力电器股份有限公司 | Oil-gas separation structure and compressor |
US12025125B2 (en) | 2018-11-29 | 2024-07-02 | Copeland Climate Technologies (Suzhou) Co. Ltd. | Scroll compressor having sealed-oil interception structure |
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ES2681217T3 (en) * | 2010-01-20 | 2018-09-12 | Daikin Industries, Ltd. | Compressor |
US9181949B2 (en) * | 2012-03-23 | 2015-11-10 | Bitzer Kuehlmaschinenbau Gmbh | Compressor with oil return passage formed between motor and shell |
KR101681590B1 (en) * | 2015-09-09 | 2016-12-01 | 엘지전자 주식회사 | Scroll compressor |
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WO2019102673A1 (en) * | 2017-11-27 | 2019-05-31 | 三菱電機株式会社 | Compressor and refrigeration cycle device |
CN108223382A (en) * | 2018-03-22 | 2018-06-29 | 宁波汇峰聚威科技股份有限公司 | A kind of lubricating system of screw compressor |
WO2020108224A1 (en) * | 2018-11-29 | 2020-06-04 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having sealed-oil interception structure |
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US5297396A (en) * | 1992-07-10 | 1994-03-29 | Kabushiki Kaisha Toshiba | Air conditioning apparatus having a plurality of indoor units connected to an outdoor unit |
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US20060257273A1 (en) * | 2005-05-16 | 2006-11-16 | Copeland Corporation | Open drive scroll machine |
US7841845B2 (en) | 2005-05-16 | 2010-11-30 | Emerson Climate Technologies, Inc. | Open drive scroll machine |
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US20080175738A1 (en) * | 2007-01-19 | 2008-07-24 | Jung Chul-Su | Compressor and oil blocking device therefor |
US20080206084A1 (en) * | 2007-02-23 | 2008-08-28 | Yang-Hee Cho | Compressor and oil separation device therefor |
US7771180B2 (en) * | 2007-02-23 | 2010-08-10 | Lg Electronics Inc. | Compressor and oil separation device therefor |
US7942656B2 (en) | 2007-03-21 | 2011-05-17 | Lg Electronics Inc. | Compressor and device for reducing vibration therefor |
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US12025125B2 (en) | 2018-11-29 | 2024-07-02 | Copeland Climate Technologies (Suzhou) Co. Ltd. | Scroll compressor having sealed-oil interception structure |
CN114857009A (en) * | 2022-06-06 | 2022-08-05 | 珠海格力电器股份有限公司 | Oil-gas separation structure and compressor |
Also Published As
Publication number | Publication date |
---|---|
CN100398827C (en) | 2008-07-02 |
JP4943680B2 (en) | 2012-05-30 |
KR100619741B1 (en) | 2006-09-12 |
CN1749568A (en) | 2006-03-22 |
KR20060024200A (en) | 2006-03-16 |
DE102005040971B4 (en) | 2008-07-10 |
JP2006083853A (en) | 2006-03-30 |
DE102005040971A1 (en) | 2006-03-30 |
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