KR20090012841A - Two stage rotary compressor - Google Patents
Two stage rotary compressor Download PDFInfo
- Publication number
- KR20090012841A KR20090012841A KR1020070077023A KR20070077023A KR20090012841A KR 20090012841 A KR20090012841 A KR 20090012841A KR 1020070077023 A KR1020070077023 A KR 1020070077023A KR 20070077023 A KR20070077023 A KR 20070077023A KR 20090012841 A KR20090012841 A KR 20090012841A
- Authority
- KR
- South Korea
- Prior art keywords
- low pressure
- bearing
- high pressure
- pressure cylinder
- cover
- Prior art date
Links
- 230000006835 compression Effects 0.000 claims description 93
- 238000007906 compression Methods 0.000 claims description 93
- 239000003507 refrigerant Substances 0.000 claims description 79
- 238000003780 insertion Methods 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 8
- 238000000638 solvent extraction Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000003475 lamination Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
-
- 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
- F04C23/001—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 of similar working principle
-
- 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
-
- 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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/005—Axial sealings for working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
-
- 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
- F04C2210/00—Fluid
- F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
-
- 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
- F04C2240/00—Components
- F04C2240/40—Electric motor
-
- 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
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/805—Fastening means, e.g. bolts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
- Y10S417/902—Hermetically sealed motor pump unit
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
1 is a view showing an example of a conventional rotary twin compressor.
2 is a view showing an example of a conventional rotary two-stage compressor.
Figure 3 is a schematic diagram showing an example of a cycle comprising a rotary two-stage compressor according to the present invention.
4 is a view showing an example of a rotary two-stage compressor according to the present invention.
5 is a view showing an example of a low pressure compression assembly of a rotary two-stage compressor according to the present invention.
6 and 7 are a view of a portion of the rotary two stage compressor according to the present invention from above and below.
8 is a view showing a part of the rotary two-stage compressor according to the present invention cut away.
9 is a view showing an example of a rotary shaft of a rotary two-stage compressor according to the present invention.
10 is a view showing an example of an internal flow path of a rotary two-stage compressor according to the present invention.
11 is a view showing a first embodiment of a fastening structure of a rotary two-stage compressor according to the present invention.
12 is a view showing a second embodiment of the fastening structure of the rotary two-stage compressor according to the present invention.
<Explanation of symbols on main parts of the drawings>
100: rotary compressor 110: electric motor
120: low pressure compression assembly 130: high pressure compression assembly
140: intermediate plate 161: lower bearing
162: upper bearing 171: lower cover
B: long bolt
The present invention relates to a rotary compressor, and more particularly to a rotary two stage compressor that can simplify the fastening structure of the compression mechanism parts.
In general, a compressor is a mechanical device that increases pressure by receiving power from a power generator such as an electric motor or a turbine to compress air, refrigerant, or various other working gases. It is widely used throughout.
These compressors can be classified into reciprocating compressors for compressing refrigerant while linearly reciprocating inside the cylinders by forming a compression space in which the working gas is absorbed and discharged between the piston and the cylinder. Rotary compressor that compresses the refrigerant while the roller is eccentrically rotated along the inner wall of the cylinder so that a compression space for absorbing and discharging the working gas is formed between the roller and the eccentric rotating roller and the cylinder. And a scroll compressor for compressing the refrigerant while the turning scroll is rotated along the fixed scroll to form a compressed space in which the working gas is sucked and discharged between the orbiting scroll and the fixed scroll. Divided into
Particularly, the rotary compressor includes two rollers and two cylinders at the upper and lower portions, and a rotary twin compressor at the upper and lower rollers and the cylinder pair compresses part of the total compression capacity and the other and the upper and lower portions. Rotary two-stage with two rollers and two cylinders, two cylinders in communication, one pair compresses relatively low pressure refrigerant, and the other pair compresses relatively high pressure refrigerant after low pressure compression More advanced, such as a compressor.
In the Republic of Korea Patent Publication No. 1994-001001 a rotary compressor is disclosed. The motor is located inside the shell, and a rotating shaft is installed to penetrate the motor. In addition, a cylinder is located under the electric motor, and an eccentric portion fitted to the rotating shaft and a roller fitted to the eccentric portion are located inside the cylinder. The cylinder has a coolant discharge hole and a coolant inlet hole, and a vane is provided between the coolant discharge hole and the coolant inlet hole to prevent the uncompressed low pressure refrigerant from mixing with the compressed high pressure refrigerant. In addition, a spring is installed at one end of the vane to maintain the eccentric and rotating roller and the vane in contact. When the rotating shaft is rotated by the motor, the eccentric portion and the roller rotate along the inner circumference of the cylinder to compress the refrigerant gas, and the compressed refrigerant gas is discharged through the refrigerant discharge hole.
Republic of Korea Patent Publication No. 10-2005-0062995 discloses a rotary twin compressor. Referring to FIG. 1, two
Republic of Korea Patent Publication No. 10-2007-0009958 discloses a rotary two-stage compressor. Referring to FIG. 2, the
However, the rotary two-stage compressor according to the prior art is the main bearing, the high pressure compression element, the intermediate plate, the low pressure compression element is integrally bolted, the sub-bearing, gasket, cover additional bolt connection to form an intermediate pressure chamber Therefore, as the fastening is made twice, there is a problem that not only the productivity is lowered but also the production cost is increased.
The present invention has been made to solve the above problems of the prior art, to provide a rotary two-stage compressor that can simplify the fastening structure of the compression mechanism components, such as low pressure cylinder, high pressure cylinder, intermediate plate, bearing and cover. The purpose is.
In addition, the present invention provides a rotary two-stage compressor capable of fastening compression mechanism parts such as a low pressure cylinder, a high pressure cylinder, an intermediate plate, a bearing and a cover, and at the same time forming an internal flow path through which refrigerant flows. The purpose is to provide.
The present invention for solving the above problems is a sealed container; A rotating shaft provided in the sealed container and transmitting a rotational force; A low pressure compression assembly in which primary compression of the refrigerant is performed inside the low pressure cylinder according to the rotation of the rotary shaft; A high pressure compression assembly in which secondary compression of the refrigerant compressed first in the high pressure cylinder is performed according to the rotation of the rotary shaft; An intermediate plate partitioning between the low pressure cylinder and the high pressure cylinder; A bearing and a cover defining a low pressure compression assembly and an intermediate pressure chamber in communication with the high pressure compression assembly; And, it provides a rotary two-stage compressor comprising a; low-pressure cylinder, high-pressure cylinder, intermediate plate, long bolt for fastening the bearing and cover on the coaxial.
In addition, the long bolt provides a rotary two-stage compressor, characterized in that fastened along the cover, bearing, low pressure cylinder, intermediate plate, high pressure cylinder from the lower side.
In addition, the upper bearing and the upper cover is fixed to the inside of the sealed container so as to be located above the high pressure compression assembly, and having a space for temporarily passing through the refrigerant discharged from the high pressure compression assembly; the long bolt extends to the upper bearing It provides a rotary two-stage compressor, characterized in that fastened.
The present invention also provides a rotary two-stage compressor, which is provided between the bearing and the cover and includes a gasket for preventing leakage of the intermediate pressure chamber.
In addition, the bearing includes a shaft insertion portion protruding in one direction to the center so that the rotation shaft is inserted, and a fastening portion protruding in the same direction as one direction around the cover so that the cover is long bolted, the cover is inserted / It is formed in a flat plate shape provided with a support hole, the gasket provides a rotary two-stage compressor, characterized in that formed in a flat plate shape corresponding to the cover.
In addition, the bearing includes a shaft insertion portion protruding in one direction to the center so that the rotation shaft is inserted, and a fastening portion that is flat around the cover so that the cover is fastened to the long bolt, and the cover includes a hole into which the shaft insertion portion of the bearing is inserted / supported. And a periphery stepped to protrude in one direction and the opposite direction around the center, wherein the gasket includes a first gasket installed between the shaft insert of the bearing and the center of the cover, and between the fastening portion of the bearing and the periphery of the cover. It provides a rotary two-stage compressor, including; a second gasket installed in.
In addition, the bearing, the low pressure cylinder, the intermediate plate, the inner passage through which the refrigerant flows by the intermediate pressure communication holes formed in the high pressure cylinder, respectively; further comprising a long bolt, bearing, low pressure cylinder, intermediate plate, It provides a rotary two-stage compressor, characterized in that installed at regular intervals in the circumferential direction of the high pressure cylinder.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
3 is a schematic diagram showing an example of a cycle including a rotary two-stage compressor according to the present invention. The heating cycle includes components such as rotary two
4 is a view showing an example of a rotary two-stage compressor according to the present invention. Rotary two-
The
The low
The low
Looking at the structure in which the intermediate pressure chamber (Pm) is formed in the
A discharge port (not shown) is installed on an upper portion of the
The
Since the
5 is a view showing an example of a low pressure compression assembly of a rotary two-stage compressor according to the present invention. The low
In addition, the
As shown in FIG. 5, when the low pressure
6 to 8 is a view showing a part of a rotary two-stage compressor according to an embodiment of the present invention. In order from the bottom, the
As described above, when the
At this time, the intermediate
The intermediate
In addition, the intermediate
The
When the intermediate
Further, when the intermediate
9 is a view showing an example of a rotary shaft provided in a rotary two-stage compressor according to the present invention. The low pressure
10 is a view showing an example of the installation structure of the intermediate pressure chamber of the rotary two-stage compressor according to the present invention. The intermediate pressure chamber Pm of the rotary two-stage compressor according to the present invention includes a
11 is a view illustrating a fastening structure of a rotary two-stage compressor according to the present invention, the
At this time, the
Therefore, when the
11 is a view showing a second embodiment of the fastening structure of the rotary two-stage compressor according to the present invention, the second embodiment of the
At this time, the
Furthermore, in order to prevent leakage between the
Therefore, when the
In the above, the present invention has been described in detail by way of examples based on the embodiments of the present invention and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.
The rotary two-stage compressor according to the present invention configured as described above is fastening each part because the upper bearing, the high pressure cylinder, the intermediate plate, the low pressure cylinder, the lower bearing, the lower cover are fastened at a time using a long bolt on the coaxial shaft. The structure can be simplified to increase productivity and reduce production costs.
In addition, the rotary two-stage compressor according to the present invention includes a medium pressure communication groove or a medium pressure communication hole in the high pressure cylinder, the intermediate plate, the low pressure cylinder, and the lower bearing, and is formed separately from the intermediate pressure communication groove or the intermediate pressure communication hole. When the upper bearing, the high pressure cylinder, the intermediate plate, the low pressure cylinder, the lower bearing, and the lower cover are fastened with long bolts through the sphere, the intermediate pressure communication grooves or the intermediate pressure communication holes of the parts communicate with each other at the same time. There is an advantage that the internal flow path can be easily formed.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070077023A KR20090012841A (en) | 2007-07-31 | 2007-07-31 | Two stage rotary compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070077023A KR20090012841A (en) | 2007-07-31 | 2007-07-31 | Two stage rotary compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20090012841A true KR20090012841A (en) | 2009-02-04 |
Family
ID=40683543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070077023A KR20090012841A (en) | 2007-07-31 | 2007-07-31 | Two stage rotary compressor |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20090012841A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103362816A (en) * | 2012-03-30 | 2013-10-23 | 三菱电机株式会社 | Rotary compressor |
KR101369053B1 (en) * | 2011-10-27 | 2014-02-28 | 미쓰비시덴키 가부시키가이샤 | Rotary compressor |
KR20190142568A (en) * | 2018-06-18 | 2019-12-27 | 엘지전자 주식회사 | Compressor |
US11306719B2 (en) | 2018-06-18 | 2022-04-19 | Lg Electronics Inc. | Compressor |
-
2007
- 2007-07-31 KR KR1020070077023A patent/KR20090012841A/en not_active Application Discontinuation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101369053B1 (en) * | 2011-10-27 | 2014-02-28 | 미쓰비시덴키 가부시키가이샤 | Rotary compressor |
CN103362816A (en) * | 2012-03-30 | 2013-10-23 | 三菱电机株式会社 | Rotary compressor |
KR20190142568A (en) * | 2018-06-18 | 2019-12-27 | 엘지전자 주식회사 | Compressor |
US11306719B2 (en) | 2018-06-18 | 2022-04-19 | Lg Electronics Inc. | Compressor |
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Legal Events
Date | Code | Title | Description |
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |