US20080267799A1 - Hermetic type compressor - Google Patents
Hermetic type compressor Download PDFInfo
- Publication number
- US20080267799A1 US20080267799A1 US12/077,228 US7722808A US2008267799A1 US 20080267799 A1 US20080267799 A1 US 20080267799A1 US 7722808 A US7722808 A US 7722808A US 2008267799 A1 US2008267799 A1 US 2008267799A1
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- United States
- Prior art keywords
- rotor
- refrigerant
- rotary shaft
- type compressor
- hermetic type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
- F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
Definitions
- the present disclosure relates to a hermetic type compressor. More particularly, the present disclosure relates to a hermetic type compressor in which balance weights, which are installed on a rotor so as to compensate for rotating unbalance of a rotary shaft, are structurally improved.
- a compressor applied to a refrigeration cycle for a refrigerator or an air conditioner has a hermetic case for an outward appearance.
- the hermetic case is equipped therein with a driving unit providing driving force for compressing a refrigerant, and a compressing unit receiving the driving force from the driving unit and compressing the refrigerant.
- the driving unit comprises a stator, and a rotor installed in the stator so as to rotate in electromagnetic interaction with the stator.
- a rotary shaft is press-fit into the center of the rotor. Further, the rotary shaft includes an eccentric part at one end thereof so as to be eccentric to the central axis of the rotary shaft.
- the compressing unit compresses the refrigerant using eccentric motion of this eccentric part.
- the rotary shaft causes vibration or noise while rotating in an unbalanced state due to the eccentric motion of the eccentric part.
- the rotor includes balance weights having a predetermined mass at upper and lower ends thereof, which are disposed so as to cross each other at an angle of 180 degrees.
- Each balance weight usually has the shape of a semi-ring because it is disposed around the rotary shaft.
- FIG. 1 illustrates the structure of a conventional hermetic type compressor, in which a balance weight is coupled to the upper end of a rotor.
- a reference number 3 indicates a rotary shaft.
- a hermetic type compressor which comprises a compressing unit, which compresses a refrigerant, a driving unit, which provides driving force to compress the refrigerant, and comprises a stator and a rotor installed in the stator so as to rotate in electromagnetic interaction with the stator, and a rotary shaft, which is press-fit into a center of the rotor so as to transmit the driving force of the driving unit to the compressing unit, and comprises an eccentric part on one end thereof.
- the rotor comprises balance weights so as to compensate for rotating unbalance of the rotary shaft caused by the eccentric part on upper and lower ends thereof, each balance weight has a shape of a ring, part of which has at least a hollow space.
- each balance weight comprises a solid part and a hollow part, both of which are integrally formed with each other and have a shape of a semi-ring.
- each balance weight comprises a solid part and a hollow part, both of which are separately formed and coupled with each other and have a shape of a semi-ring.
- the hollow part is open to one face thereof which is in contact with the rotor.
- FIG. 1 is a plan view illustrating the structure of a conventional hermetic type compressor, in which a rotor is rotating in the state in which a balance weight is coupled to a rotor;
- FIG. 2 is a sectional view illustrating the overall structure of a hermetic type compressor according to an exemplary embodiment of the present disclosure
- FIG. 3 is a perspective view illustrating the partial structure of a hermetic type compressor according to an exemplary embodiment of the present disclosure, in which balance weights are decoupled from a rotor;
- FIG. 4 is a plan view illustrating the structure of a hermetic type compressor according to an exemplary embodiment of the present disclosure, in which a rotor is rotating in the state in which balance weights are coupled to a rotor;
- FIG. 5 is a perspective view illustrating the structure of a balance weight according to another exemplary embodiment of the present disclosure.
- a reciprocating type compressor of the present disclosure comprises a hermetic case 10 , in which an upper case 10 a and a lower case 10 b are coupled to each other.
- the hermetic case 10 comprises an inlet pipe 11 and an outlet pipe 12 on one side thereof.
- the inlet pipe 11 guides a refrigerant from the exterior to the interior of the hermetic case 10
- the outlet pipe 12 guides the refrigerant compressed in the hermetic case 10 to the exterior of the hermetic case 10 .
- the hermetic case 10 is equipped therein with a compressing unit 20 compressing the refrigerant, and a driving unit 20 providing driving force to compress the refrigerant.
- the compressing unit 20 and the driving unit 20 are installed through a frame 40 .
- the driving unit 30 comprises a stator 31 fixed around a lower portion of the frame 40 , and a rotor 32 installed in the stator 31 so as to rotate in electromagnetic interaction with the stator 31 .
- the compressing unit 20 comprises: a cylinder 21 , which is integrally formed with the frame 40 on one side of the upper portion of a through-hole 41 at the center of the frame 40 so as to form a compression chamber 21 a for compressing the refrigerant; a piston 22 , which reciprocates in the compression chamber 21 a and compresses the refrigerant; a cylinder head 23 , which is coupled to one end of the cylinder 21 so as to airtightly close the compression chamber 21 a and is partitioned into a refrigerant discharge chamber 23 a and a refrigerant intake chamber 23 b ; and a valve 24 , which is interposed between the cylinder 21 and the cylinder head 23 , and regulates a flow of the refrigerant that is either drawn from the refrigerant intake chamber 23 b into the compression chamber 21 a or discharged from the compression chamber 21 a to the refrigerant discharge chamber 23 a .
- the refrigerant intake chamber 23 b guides the refrigerant, which is delivered into the hermetic case 10 through the inlet pipe 11 , to the compression chamber 21 a .
- the refrigerant discharge chamber 23 a cooperates with the outlet pipe 12 .
- An intake muffler 13 serves to guide the refrigerant flowing into the hermetic case 10 through the inlet pipe 11 to the refrigerant intake chamber 23 b in the state where pulsating pressure is reduced.
- the driving force of the driving unit 30 is transmitted to the compressing unit 20 through a rotary shaft 50 .
- the rotary shaft 50 is rotatably installed in the through-hole 41 at the center of the frame 40 .
- the rotary shaft 50 is press-fit into the center of the rotor 32 at a lower portion of the frame 40 so as to be rotated together with the rotor 32 , and comprises an eccentric part 51 , which is eccentric to the central axis of the rotary shaft 50 and is eccentrically rotated about the central axis of the rotary shaft 50 , at an upper end thereof at an upper portion of the frame.
- a connecting rod 25 is connected between the eccentric part 51 and the piston 22 in order to convert rotating motion of the rotary shaft 50 into reciprocating motion of the piston 22 .
- the piston 22 connected with the eccentric part 51 through the connecting rod 25 reciprocates in the compression chamber 21 a .
- the refrigerant guided into the hermetic case 10 along the inlet pipe 11 is drawn into the compression chamber 21 a via the refrigerant intake chamber 23 b of the cylinder head 23 , and is compressed in the compression chamber 21 a .
- the refrigerant compressed in the compression chamber 21 a is discharged to the outside of the hermetic case 10 via the refrigerant discharge chamber 23 a of the cylinder head 23 and the outlet pipe 12 . This process is repeated. Thereby, the refrigerant is compressed by the compressor.
- the rotary shaft 50 is rotated in an unbalanced state due to the eccentric rotation of the eccentric part 51 and the reciprocating motion of the piston 22 that occurs in a direction perpendicular to the rotary shaft 50 .
- the rotary shaft 50 causes vibration or noise.
- first and second balance weights 60 and 70 are installed on upper and lower ends of the rotor 32 respectively.
- each of the first and second balance weights 60 and 70 has an annular appearance, as illustrated in detail in FIG. 3 .
- the first and second balance weights 60 and 70 comprise solid parts 61 and 71 , and hollow parts 62 and 72 .
- the solid parts 61 and 71 and the hollow parts 62 and 72 have the shape of a semi-ring.
- the first balance weight 60 is constructed in a manner such that the solid part 61 is integrally formed with the hollow part 72 in a ring shape. This is equally true of the second balance weight 70 .
- the solid parts 61 and 71 of the first and second balance weights 60 and 70 function to compensate for the rotating unbalance of the rotary shaft 50 .
- the first and second balance weights 60 and 70 are disposed so as to cross each other at an angle of 180 degrees when installed on the upper and lower ends of the rotor 32 .
- each of the first and second balance weights 60 and 70 having the annular appearances is symmetrical in all directions and does not protrude outwardly from the outer surface thereof.
- the fluid such as the refrigerant in the hermetic case 10 does not excite vibration when the rotor 32 is rotated as illustrated in FIG. 4 .
- the hermetic type compressor of this embodiment can inhibit aeroacoustic noise attributable to the rotation of the balance weights 60 and 70 in the hermetic case 10 , and thus reduce overall driving noise.
- balance weights 60 and 70 can be fixed to the rotor 32 using rivets 32 a .
- the solid parts 61 and 71 comprise fastening through-holes 61 a and 71 a for fastening the rivets 32 a.
- the hollow parts 62 and 72 are adapted to form open faces 62 a and 72 a so as to allow the hollow interiors thereof to communicate with the exteriors thereof. All of the remaining faces other than the open faces 62 a and 72 a are closed. These open faces 62 a and 72 a can facilitate forming the balance weights 60 and 70 .
- the balance weights 60 and 70 can be prepared by forging a solid metal member having the shape of a complete ring or by casting.
- each of the balance weights 60 and 70 is adapted so that one face thereof is partly open, this may make it difficult to form a hollow space when the balance weights 60 and 70 are formed.
- the open faces 62 a and 72 a of the balance weights 60 and 70 are formed so as to completely open.
- the refrigerant in the hermetic case 10 may excite vibration on inner walls of the hollow parts 62 and 72 .
- the open face 62 a of the first balance weight 60 preferably faces the upper end of the rotor 32 so as to be in contact with the upper end of the rotor 32 .
- the open face 72 a of the second balance weight 70 preferably faces the lower end of the rotor 32 so as to be in contact with the lower end of the rotor 32 .
- the solid part 61 and the hollow part 62 are formed in one body, and the solid part 71 and the hollow part 72 are also formed in one body.
- the solid parts 61 ′ and 71 ′ are fabricated apart from the hollow parts 62 ′ and 72 ′, and then are coupled to the hollow parts 62 ′ and 72 ′.
- the solid parts 61 ′ and 71 ′ are coupled to the hollow parts 62 ′ and 72 ′ by bolts 100 .
- the solid parts 61 ′ and 71 ′ may be coupled to the hollow parts 62 ′ and 72 ′ by an adhesive.
- the hollow parts 62 ′ and 72 ′ are also adapted to form open faces 62 a and 72 a in the directions in which they are in contact with the rotor 32 .
- the hermetic type compressor is adapted so that the balance weights installed on the rotor comprise the solid parts and the hollow parts, and form the annular appearances on the whole.
- the hermetic type compressor compensates for the rotating unbalance of the rotary shaft by means of the solid parts, and prevents the balance weights from exciting the vibration of the fluid in the hermetic case when the rotor is rotated, so that the aeroacoustic noise can be inhibited from occurring in the hermetic case, and thus the overall driving noise can be effectively reduced.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
A hermetic type compressor including balance weights installed on a rotor so as to compensate for rotating unbalance of a rotary shaft, thereby reducing a level of noise. The hermetic type compressor has a compressing unit, which compresses a refrigerant, a driving unit, which provides driving force to compress the refrigerant, a stator, a rotor that rotates in electromagnetic interaction with the stator, and a rotary shaft, which is press-fit into a center of the rotor so as to transmit the driving force of the driving unit to the compressing unit, and has an eccentric part on one end thereof. The rotor has balance weights so as to compensate for rotating unbalance of the rotary shaft caused by the eccentric part on upper and lower ends thereof, where each balance weight has a shape of a ring, part of which has at least a hollow space.
Description
- This application claims the benefit of Korean Patent Application No. 10-2007-0030159, filed on Mar. 28, 2007, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.
- 1. Field of the Invention
- The present disclosure relates to a hermetic type compressor. More particularly, the present disclosure relates to a hermetic type compressor in which balance weights, which are installed on a rotor so as to compensate for rotating unbalance of a rotary shaft, are structurally improved.
- 2. Description of the Related Art
- In general, a compressor applied to a refrigeration cycle for a refrigerator or an air conditioner has a hermetic case for an outward appearance. The hermetic case is equipped therein with a driving unit providing driving force for compressing a refrigerant, and a compressing unit receiving the driving force from the driving unit and compressing the refrigerant.
- The driving unit comprises a stator, and a rotor installed in the stator so as to rotate in electromagnetic interaction with the stator. A rotary shaft is press-fit into the center of the rotor. Further, the rotary shaft includes an eccentric part at one end thereof so as to be eccentric to the central axis of the rotary shaft. The compressing unit compresses the refrigerant using eccentric motion of this eccentric part.
- Thus, during compressing the refrigerant, the rotary shaft causes vibration or noise while rotating in an unbalanced state due to the eccentric motion of the eccentric part. In order to compensate for this rotating unbalance, the rotor includes balance weights having a predetermined mass at upper and lower ends thereof, which are disposed so as to cross each other at an angle of 180 degrees. Each balance weight usually has the shape of a semi-ring because it is disposed around the rotary shaft.
-
FIG. 1 illustrates the structure of a conventional hermetic type compressor, in which a balance weight is coupled to the upper end of a rotor. For reference, a reference number 3 indicates a rotary shaft. - In the case of this conventional hermetic type compressor, since the
balance weight 2 is disposed so as to be eccentric to the central axis of the rotary shaft 3, a leading end of the rotatingbalance weight 2 excites vibration of a fluid such as a refrigerant inside a hermetic case when the rotary shaft 3 of the rotor 1 rotates to compress the refrigerant. As a result, aeroacoustic noise of a specific frequency is caused in the hermetic case, and thus overall driving noise of the hermetic type compressor is increased. - Accordingly, it is an aspect of the present disclosure to provide a hermetic type compressor, in which balance weights installed on a rotor so as to compensate for rotating unbalance of a rotary shaft are structurally improved, thereby reducing a level of noise.
- Additional aspects and/or advantages of the disclosure will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the disclosure.
- The foregoing and/or other aspects of the present disclosure are achieved by providing a hermetic type compressor, which comprises a compressing unit, which compresses a refrigerant, a driving unit, which provides driving force to compress the refrigerant, and comprises a stator and a rotor installed in the stator so as to rotate in electromagnetic interaction with the stator, and a rotary shaft, which is press-fit into a center of the rotor so as to transmit the driving force of the driving unit to the compressing unit, and comprises an eccentric part on one end thereof. The rotor comprises balance weights so as to compensate for rotating unbalance of the rotary shaft caused by the eccentric part on upper and lower ends thereof, each balance weight has a shape of a ring, part of which has at least a hollow space.
- According to an aspect of the present disclosure, each balance weight comprises a solid part and a hollow part, both of which are integrally formed with each other and have a shape of a semi-ring.
- According to an aspect of the present disclosure, each balance weight comprises a solid part and a hollow part, both of which are separately formed and coupled with each other and have a shape of a semi-ring.
- According to an aspect of the present disclosure, the hollow part is open to one face thereof which is in contact with the rotor.
- These and/or other aspects and advantages of the disclosure will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
-
FIG. 1 is a plan view illustrating the structure of a conventional hermetic type compressor, in which a rotor is rotating in the state in which a balance weight is coupled to a rotor; -
FIG. 2 is a sectional view illustrating the overall structure of a hermetic type compressor according to an exemplary embodiment of the present disclosure; -
FIG. 3 is a perspective view illustrating the partial structure of a hermetic type compressor according to an exemplary embodiment of the present disclosure, in which balance weights are decoupled from a rotor; -
FIG. 4 is a plan view illustrating the structure of a hermetic type compressor according to an exemplary embodiment of the present disclosure, in which a rotor is rotating in the state in which balance weights are coupled to a rotor; and -
FIG. 5 is a perspective view illustrating the structure of a balance weight according to another exemplary embodiment of the present disclosure. - Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below to explain the present disclosure by referring to the figures.
- As illustrated in
FIG. 2 , a reciprocating type compressor of the present disclosure comprises ahermetic case 10, in which anupper case 10 a and alower case 10 b are coupled to each other. Thehermetic case 10 comprises aninlet pipe 11 and anoutlet pipe 12 on one side thereof. Theinlet pipe 11 guides a refrigerant from the exterior to the interior of thehermetic case 10, while theoutlet pipe 12 guides the refrigerant compressed in thehermetic case 10 to the exterior of thehermetic case 10. - The
hermetic case 10 is equipped therein with a compressingunit 20 compressing the refrigerant, and adriving unit 20 providing driving force to compress the refrigerant. Thecompressing unit 20 and thedriving unit 20 are installed through aframe 40. - The
driving unit 30 comprises astator 31 fixed around a lower portion of theframe 40, and arotor 32 installed in thestator 31 so as to rotate in electromagnetic interaction with thestator 31. - Further, the
compressing unit 20 comprises: acylinder 21, which is integrally formed with theframe 40 on one side of the upper portion of a through-hole 41 at the center of theframe 40 so as to form acompression chamber 21 a for compressing the refrigerant; apiston 22, which reciprocates in thecompression chamber 21 a and compresses the refrigerant; acylinder head 23, which is coupled to one end of thecylinder 21 so as to airtightly close thecompression chamber 21 a and is partitioned into arefrigerant discharge chamber 23 a and arefrigerant intake chamber 23 b; and avalve 24, which is interposed between thecylinder 21 and thecylinder head 23, and regulates a flow of the refrigerant that is either drawn from therefrigerant intake chamber 23 b into thecompression chamber 21 a or discharged from thecompression chamber 21 a to therefrigerant discharge chamber 23 a. Here, therefrigerant intake chamber 23 b guides the refrigerant, which is delivered into thehermetic case 10 through theinlet pipe 11, to thecompression chamber 21 a. Therefrigerant discharge chamber 23 a cooperates with theoutlet pipe 12. Anintake muffler 13 serves to guide the refrigerant flowing into thehermetic case 10 through theinlet pipe 11 to therefrigerant intake chamber 23 b in the state where pulsating pressure is reduced. - The driving force of the
driving unit 30 is transmitted to the compressingunit 20 through arotary shaft 50. Therotary shaft 50 is rotatably installed in the through-hole 41 at the center of theframe 40. Therotary shaft 50 is press-fit into the center of therotor 32 at a lower portion of theframe 40 so as to be rotated together with therotor 32, and comprises aneccentric part 51, which is eccentric to the central axis of therotary shaft 50 and is eccentrically rotated about the central axis of therotary shaft 50, at an upper end thereof at an upper portion of the frame. - Further, a connecting
rod 25 is connected between theeccentric part 51 and thepiston 22 in order to convert rotating motion of therotary shaft 50 into reciprocating motion of thepiston 22. - According to this construction, when the
rotary shaft 50 is rotated together with therotor 32 by electromagnetic interaction between thestator 31 and therotor 32, thepiston 22 connected with theeccentric part 51 through the connectingrod 25 reciprocates in thecompression chamber 21 a. Thereby, the refrigerant guided into thehermetic case 10 along theinlet pipe 11 is drawn into thecompression chamber 21 a via therefrigerant intake chamber 23 b of thecylinder head 23, and is compressed in thecompression chamber 21 a. The refrigerant compressed in thecompression chamber 21 a is discharged to the outside of thehermetic case 10 via therefrigerant discharge chamber 23 a of thecylinder head 23 and theoutlet pipe 12. This process is repeated. Thereby, the refrigerant is compressed by the compressor. - Meanwhile, while the refrigerant is compressed, the
rotary shaft 50 is rotated in an unbalanced state due to the eccentric rotation of theeccentric part 51 and the reciprocating motion of thepiston 22 that occurs in a direction perpendicular to therotary shaft 50. As a result, therotary shaft 50 causes vibration or noise. - Thus, in order to compensate for the rotating unbalance of the
rotary shaft 50, first andsecond balance weights rotor 32 respectively. In this embodiment, each of the first andsecond balance weights FIG. 3 . - The first and
second balance weights solid parts hollow parts solid parts hollow parts first balance weight 60 is constructed in a manner such that thesolid part 61 is integrally formed with thehollow part 72 in a ring shape. This is equally true of thesecond balance weight 70. - Here, the
solid parts second balance weights rotary shaft 50. The first andsecond balance weights rotor 32. - Further, each of the first and
second balance weights hermetic case 10 does not excite vibration when therotor 32 is rotated as illustrated inFIG. 4 . As a result, the hermetic type compressor of this embodiment can inhibit aeroacoustic noise attributable to the rotation of thebalance weights hermetic case 10, and thus reduce overall driving noise. - These
balance weights rotor 32 usingrivets 32 a. To this end, thesolid parts holes rivets 32 a. - The
hollow parts balance weights - In other words, the
balance weights balance weights balance weights balance weights - Further, in the case in which the open faces 62 a and 72 a are exposed outside in the state where the
balance weights rotor 32, the refrigerant in thehermetic case 10 may excite vibration on inner walls of thehollow parts first balance weight 60 is installed on the upper end of therotor 32, theopen face 62 a of thefirst balance weight 60 preferably faces the upper end of therotor 32 so as to be in contact with the upper end of therotor 32. Similarly, when thesecond balance weight 70 is installed on the lower end of therotor 32, theopen face 72 a of thesecond balance weight 70 preferably faces the lower end of therotor 32 so as to be in contact with the lower end of therotor 32. - Further, in this embodiment, the
solid part 61 and thehollow part 62 are formed in one body, and thesolid part 71 and thehollow part 72 are also formed in one body. However, in another embodiment of the present disclosure, as illustrated inFIG. 5 , thesolid parts 61′ and 71′ are fabricated apart from thehollow parts 62′ and 72′, and then are coupled to thehollow parts 62′ and 72′. - In the other embodiment, the
solid parts 61′ and 71′ are coupled to thehollow parts 62′ and 72′ bybolts 100. Alternatively, thesolid parts 61′ and 71′ may be coupled to thehollow parts 62′ and 72′ by an adhesive. Thehollow parts 62′ and 72′ are also adapted to form open faces 62 a and 72 a in the directions in which they are in contact with therotor 32. - As described in detail above, according to the present disclosure, the hermetic type compressor is adapted so that the balance weights installed on the rotor comprise the solid parts and the hollow parts, and form the annular appearances on the whole.
- Thus, the hermetic type compressor compensates for the rotating unbalance of the rotary shaft by means of the solid parts, and prevents the balance weights from exciting the vibration of the fluid in the hermetic case when the rotor is rotated, so that the aeroacoustic noise can be inhibited from occurring in the hermetic case, and thus the overall driving noise can be effectively reduced.
- Although few embodiments of the present disclosure have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
Claims (4)
1. A hermetic type compressor comprising:
a compressing unit, which compresses a refrigerant;
a driving unit, which provides driving force to compress the refrigerant, and comprises a stator and a rotor installed in the stator so as to rotate in electromagnetic interaction with the stator; and
a rotary shaft, which is press-fit into a center of the rotor so as to transmit the driving force of the driving unit to the compressing unit, and comprises an eccentric part on one end thereof,
wherein the rotor comprises balance weights so as to compensate for rotating unbalance of the rotary shaft caused by the eccentric part on upper and lower ends thereof, each balance weight has a shape of a ring, part of which has at least a hollow space.
2. The hermetic type compressor as claimed in claim 1 , wherein each balance weight comprises a solid part and a hollow part, both of which are integrally formed with each other and have a shape of a semi-ring.
3. The hermetic type compressor as claimed in claim 1 , wherein each balance weight comprises a solid part and a hollow part, both of which are separately formed and coupled with each other and have a shape of a semi-ring.
4. The hermetic type compressor as claimed in claim 2 or 3 , wherein the hollow part is open to one face thereof which is in contact with the rotor.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20070030159 | 2007-03-28 | ||
KR10-2007-30159 | 2007-03-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080267799A1 true US20080267799A1 (en) | 2008-10-30 |
Family
ID=39887199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/077,228 Abandoned US20080267799A1 (en) | 2007-03-28 | 2008-03-18 | Hermetic type compressor |
Country Status (2)
Country | Link |
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US (1) | US20080267799A1 (en) |
CN (1) | CN101275566A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150244238A1 (en) * | 2012-09-28 | 2015-08-27 | Daikin Industrie, Ltd. | Rotary compressor |
WO2020057822A1 (en) | 2018-09-17 | 2020-03-26 | Arcelik Anonim Sirketi | A hermetic compressor weight balancing rotor |
US11680563B2 (en) * | 2018-09-21 | 2023-06-20 | Lg Electronics Inc. | Compressor including rotor frame |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011074814A (en) * | 2009-09-30 | 2011-04-14 | Sanyo Electric Co Ltd | Rotary compressor and manufacturing method for the same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4934905A (en) * | 1989-04-28 | 1990-06-19 | Tecumseh Products Company | Oil turbulence minimizer for a hermetic compressor |
US5230616A (en) * | 1988-12-05 | 1993-07-27 | Hitachi, Ltd. | Rotary compressor with shaft balancers |
US20060133944A1 (en) * | 2004-12-17 | 2006-06-22 | Doepker Roy J | Scroll machine with brushless permanent magnet motor |
US7390179B2 (en) * | 2004-12-21 | 2008-06-24 | Emerson Climate Technologies, Inc. | Scroll machine having counterweights with changeable cavity |
-
2008
- 2008-03-18 US US12/077,228 patent/US20080267799A1/en not_active Abandoned
- 2008-03-25 CN CNA2008100879333A patent/CN101275566A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5230616A (en) * | 1988-12-05 | 1993-07-27 | Hitachi, Ltd. | Rotary compressor with shaft balancers |
US4934905A (en) * | 1989-04-28 | 1990-06-19 | Tecumseh Products Company | Oil turbulence minimizer for a hermetic compressor |
US20060133944A1 (en) * | 2004-12-17 | 2006-06-22 | Doepker Roy J | Scroll machine with brushless permanent magnet motor |
US7390179B2 (en) * | 2004-12-21 | 2008-06-24 | Emerson Climate Technologies, Inc. | Scroll machine having counterweights with changeable cavity |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150244238A1 (en) * | 2012-09-28 | 2015-08-27 | Daikin Industrie, Ltd. | Rotary compressor |
US9748815B2 (en) * | 2012-09-28 | 2017-08-29 | Daikin Industries, Ltd. | Rotary compressor with the balance weight formed with a recess for receiving the head of a rivet |
WO2020057822A1 (en) | 2018-09-17 | 2020-03-26 | Arcelik Anonim Sirketi | A hermetic compressor weight balancing rotor |
US11680563B2 (en) * | 2018-09-21 | 2023-06-20 | Lg Electronics Inc. | Compressor including rotor frame |
Also Published As
Publication number | Publication date |
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CN101275566A (en) | 2008-10-01 |
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