CA2030063A1 - Dual flow single cell rotary compressor - Google Patents
Dual flow single cell rotary compressorInfo
- Publication number
- CA2030063A1 CA2030063A1 CA 2030063 CA2030063A CA2030063A1 CA 2030063 A1 CA2030063 A1 CA 2030063A1 CA 2030063 CA2030063 CA 2030063 CA 2030063 A CA2030063 A CA 2030063A CA 2030063 A1 CA2030063 A1 CA 2030063A1
- Authority
- CA
- Canada
- Prior art keywords
- journal bearing
- situated
- cylindrical
- defining
- cylindrical chamber
- 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
Links
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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
- F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
-
- 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
- F04C18/3562—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 the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
- F04C18/3564—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 the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
RD-19,744 DUAL FLOW SINGLE CELL ROTARY
COMPRESSOR CROSS REFERENCE TO
RELATED APPLICATIONS
Abstract of the Disclosure A rotary compressor having a frame defining a cylindrical aperture and a vane slot extending radially outwardly from the cylindrical aperture is provided. The frame also defines a first inlet port extending radially outwardly from said cylindrical aperture through the frame on one side of the vane slot. A second inlet valve extends radially outwardly from the cylindrical aperture through the frame and is situated substantially diametrically opposite the vane slot. A first check valve is situated in the first inlet port for permitting flow only radially inwardly. A
vane is slidably mounted in the vane slot. Two journal bearing plates each defining a journal bearing extending axially therethrough, are situated on either side of the cylindrical aperture defining a cylindrical chamber. The second journal bearing plate further defines an outlet port extending axially through the second journal bearing plate.
The outlet port is situated on the other side of the vane from the first inlet port. A second check valve is situated in the outlet port for permitting flow only from the cylindrical chamber. A shaft extends through the cylindrical chamber and is rotatably mounted in the journal bearings of the first and second journal bearing plates. The portion of the shaft situated in the cylindrical chamber has an eccentrically extending circular lobe. A piston surrounds the circular lobe and contacts a portion of the cylindrical chamber periphery and the two journal plates.
COMPRESSOR CROSS REFERENCE TO
RELATED APPLICATIONS
Abstract of the Disclosure A rotary compressor having a frame defining a cylindrical aperture and a vane slot extending radially outwardly from the cylindrical aperture is provided. The frame also defines a first inlet port extending radially outwardly from said cylindrical aperture through the frame on one side of the vane slot. A second inlet valve extends radially outwardly from the cylindrical aperture through the frame and is situated substantially diametrically opposite the vane slot. A first check valve is situated in the first inlet port for permitting flow only radially inwardly. A
vane is slidably mounted in the vane slot. Two journal bearing plates each defining a journal bearing extending axially therethrough, are situated on either side of the cylindrical aperture defining a cylindrical chamber. The second journal bearing plate further defines an outlet port extending axially through the second journal bearing plate.
The outlet port is situated on the other side of the vane from the first inlet port. A second check valve is situated in the outlet port for permitting flow only from the cylindrical chamber. A shaft extends through the cylindrical chamber and is rotatably mounted in the journal bearings of the first and second journal bearing plates. The portion of the shaft situated in the cylindrical chamber has an eccentrically extending circular lobe. A piston surrounds the circular lobe and contacts a portion of the cylindrical chamber periphery and the two journal plates.
Description
~O~QO~
- 1 ~
RD-13, 744 DUAL FI.OW SINGLE CELI. ROl!AR~
This application is related to copending application Serial No. ~RD-20,032), assigned to the same assignee as the present invention.
Back~round of the Invention The present invention relates to a two stage compressor and more specifically to a rotary compressor for pumping two separate refrigerant flows to a single higher pressure.
Some refrigerant cycles such as the one shown in copending application Serial No. 07/351,988 entitled "Refrigerator Systems With Dual Evaporators for Household Refrigerators" two separate compressors or a single two stage compressor.
It is an object of the present invention to provide a rotary compressor capable of pumping two separate refrigerant flows at different pressures through a single cavity at different to a single higher pressure.
Summary of th~ Inv~ntlon In one aspect ~f the present invention a rotary compressor having a frame defining a cylindrical aperture and a vane slot extending radially outwardly from the cylindrical aperture is provided. The frame also defines a first inlet ; 25 port extending radially outwardly from said cylindrical aperture through the frame on one side of the vane slot. A
second inlet valve extends radially outwardly from the cylindrical aperture through the frame and is situated 2 ~ 3 0 ~ ~. ? ~
RD-19,744 substantially diametrically opposite the vane slot. A first check valve is situated in the first inlet port for permitting flow only radially inwardly. A vane is slidably mounted in the vane slot. Two journal bearing plates each defining a journal bearing extending axially therethrough, are situated on either side of the cylindrical aperture defining a cylindrical chamber. The second journal bearing plate further defines an outlet port extending axially through the journal plate. The outlet port is situated on the other side of the vane from the first inlet port. A
second check valve is situated in the outlet port for permitting flow only from the cylindrical chamber. A shaft extends through the cylindrical chamber and is rotatably mounted in the journal bearings of the cover and journal bearing plates. The portion of the shaft situated in the cylindrical chamber has an eccentrically extending circular lobe. A piston surrounds the circular lobe and contacts a portion of the cylindrical chamber periphery and the two journal bearing plates.
Brie~ De~cri~t~on of the Drawing While the specification concludes with claims particularly pointing out and distinctly claiming the present invention, the objects and advantages can be more readily ascertained from the following description a preferred embodiment when read in conjunction with the accompanying drawing in which:
Figure 1 $s a partially cutaway view of a dual flow rotary compressor out of its hermetically sealed housing in accordance with the present invention;
Figure 2 is a section view taken along the lines II-II in Figure l; and RD-19,744 Figures 3, 4 and 5 schematically illustrate the operation of the rotary compressor showing the piston in three sequential positions.
S Referring now to the drawing wherein li~e numerals indicate like elements throughout and particularly Figures 1 and 2 thereof, a dual flow single cell rotary compressor 5 is shown which is typically situated in a hermetically sealed housing (not shown). The rota,y compressor has a frame 7 defining a cylindrical aperture 11 and a vane slot 13 extending radially outwardly from the cylindrical aperture.
A hollow shaft 15 is situated concentrically in the cylindrical aperture. The shaft is rotatably supported by a journal bearing 17 located in a journal bearing plate 21 on one side and a journal bearing plate 23 ha~ing a journal bearing 25 on the other. The frame 7, the journal bearing plate 21 and the journal bearing plate 23 together define a cylindrical chamber. The portion of the shaft situated in the cylindrical chamber has an eccentrically positioned circular lobe 27 extending therefrom. The circular lobe is surrounded by a close fitting annular member called a rolling piston 31. The rolling piston is in contact with the circular lobe and a portion of the cylindrical wall of the chamber. The piston is free to rotate about the circular lobe. A vane 33 is slidably mounted in the vane slot 13 in the frame biased towards the piston contacting the piston by a spring 3S. An electric motor rotor 37 is mounted on the portion of the shaft extending through the journal bearing plate 21. The portion of the shaft extending through the journal bearing plate is closed off by a cap 41 which has a friction fit.
~3t3j3 RD-19,794 The cylindrical chamber is in flow communication with a first inlet port 43 extending radially outwardly from the cylindrical chamber through the frame 7 situated adjacent to one side of the vane 33. A quick acting check valve which S permits gas flow into the chamber but not out is positioned in the port close to the chamber. In a preferred embodiment the check valve comprises a floating hinge check valve. A
sleeve 45 is press fit in the first inlet port with a spring 47 having one end wider than the sleeve situated in the port.
The spring extends through the sleeve toward the cylindrical chamber and secured to the center of a cover plate 51. The cover plate has a diameter larger than the sleeve but smaller than the port. The spring 47 biases the cover plate towards the polished end of the sleeve. The cover plate Sl is shown by dashed lines in the open position and indicated by reference numeral Sl.
A second inlet port 52 extends radially inwardly diametrically across from the vane. Tube 53 is in flow communication with this port. A check valve is not needed in this port.
An outlet port 55 extends from a position near the cylindrical chamber on the opposite side of the vane 33 from the first inlet port axially through the journal bearing plate 21 through a check valve. A reed check valve 57 is shown in the Figures comprising a flexible piece of metal secured to the plate. A portion of the flexible piece 59 covers the outlet port permitting flow only from the cylindrical chamber. The exterior portion of the journal plate 21 is covered by a close fitting housing 61 which serves a muffler.
The vane 33 divides the volume surrounding the piston 27 into a high pressure and a low pressure region.
The piston contacts the cylindrical chamber walls in~ a sweeping circular motion which moves in the same direction
- 1 ~
RD-13, 744 DUAL FI.OW SINGLE CELI. ROl!AR~
This application is related to copending application Serial No. ~RD-20,032), assigned to the same assignee as the present invention.
Back~round of the Invention The present invention relates to a two stage compressor and more specifically to a rotary compressor for pumping two separate refrigerant flows to a single higher pressure.
Some refrigerant cycles such as the one shown in copending application Serial No. 07/351,988 entitled "Refrigerator Systems With Dual Evaporators for Household Refrigerators" two separate compressors or a single two stage compressor.
It is an object of the present invention to provide a rotary compressor capable of pumping two separate refrigerant flows at different pressures through a single cavity at different to a single higher pressure.
Summary of th~ Inv~ntlon In one aspect ~f the present invention a rotary compressor having a frame defining a cylindrical aperture and a vane slot extending radially outwardly from the cylindrical aperture is provided. The frame also defines a first inlet ; 25 port extending radially outwardly from said cylindrical aperture through the frame on one side of the vane slot. A
second inlet valve extends radially outwardly from the cylindrical aperture through the frame and is situated 2 ~ 3 0 ~ ~. ? ~
RD-19,744 substantially diametrically opposite the vane slot. A first check valve is situated in the first inlet port for permitting flow only radially inwardly. A vane is slidably mounted in the vane slot. Two journal bearing plates each defining a journal bearing extending axially therethrough, are situated on either side of the cylindrical aperture defining a cylindrical chamber. The second journal bearing plate further defines an outlet port extending axially through the journal plate. The outlet port is situated on the other side of the vane from the first inlet port. A
second check valve is situated in the outlet port for permitting flow only from the cylindrical chamber. A shaft extends through the cylindrical chamber and is rotatably mounted in the journal bearings of the cover and journal bearing plates. The portion of the shaft situated in the cylindrical chamber has an eccentrically extending circular lobe. A piston surrounds the circular lobe and contacts a portion of the cylindrical chamber periphery and the two journal bearing plates.
Brie~ De~cri~t~on of the Drawing While the specification concludes with claims particularly pointing out and distinctly claiming the present invention, the objects and advantages can be more readily ascertained from the following description a preferred embodiment when read in conjunction with the accompanying drawing in which:
Figure 1 $s a partially cutaway view of a dual flow rotary compressor out of its hermetically sealed housing in accordance with the present invention;
Figure 2 is a section view taken along the lines II-II in Figure l; and RD-19,744 Figures 3, 4 and 5 schematically illustrate the operation of the rotary compressor showing the piston in three sequential positions.
S Referring now to the drawing wherein li~e numerals indicate like elements throughout and particularly Figures 1 and 2 thereof, a dual flow single cell rotary compressor 5 is shown which is typically situated in a hermetically sealed housing (not shown). The rota,y compressor has a frame 7 defining a cylindrical aperture 11 and a vane slot 13 extending radially outwardly from the cylindrical aperture.
A hollow shaft 15 is situated concentrically in the cylindrical aperture. The shaft is rotatably supported by a journal bearing 17 located in a journal bearing plate 21 on one side and a journal bearing plate 23 ha~ing a journal bearing 25 on the other. The frame 7, the journal bearing plate 21 and the journal bearing plate 23 together define a cylindrical chamber. The portion of the shaft situated in the cylindrical chamber has an eccentrically positioned circular lobe 27 extending therefrom. The circular lobe is surrounded by a close fitting annular member called a rolling piston 31. The rolling piston is in contact with the circular lobe and a portion of the cylindrical wall of the chamber. The piston is free to rotate about the circular lobe. A vane 33 is slidably mounted in the vane slot 13 in the frame biased towards the piston contacting the piston by a spring 3S. An electric motor rotor 37 is mounted on the portion of the shaft extending through the journal bearing plate 21. The portion of the shaft extending through the journal bearing plate is closed off by a cap 41 which has a friction fit.
~3t3j3 RD-19,794 The cylindrical chamber is in flow communication with a first inlet port 43 extending radially outwardly from the cylindrical chamber through the frame 7 situated adjacent to one side of the vane 33. A quick acting check valve which S permits gas flow into the chamber but not out is positioned in the port close to the chamber. In a preferred embodiment the check valve comprises a floating hinge check valve. A
sleeve 45 is press fit in the first inlet port with a spring 47 having one end wider than the sleeve situated in the port.
The spring extends through the sleeve toward the cylindrical chamber and secured to the center of a cover plate 51. The cover plate has a diameter larger than the sleeve but smaller than the port. The spring 47 biases the cover plate towards the polished end of the sleeve. The cover plate Sl is shown by dashed lines in the open position and indicated by reference numeral Sl.
A second inlet port 52 extends radially inwardly diametrically across from the vane. Tube 53 is in flow communication with this port. A check valve is not needed in this port.
An outlet port 55 extends from a position near the cylindrical chamber on the opposite side of the vane 33 from the first inlet port axially through the journal bearing plate 21 through a check valve. A reed check valve 57 is shown in the Figures comprising a flexible piece of metal secured to the plate. A portion of the flexible piece 59 covers the outlet port permitting flow only from the cylindrical chamber. The exterior portion of the journal plate 21 is covered by a close fitting housing 61 which serves a muffler.
The vane 33 divides the volume surrounding the piston 27 into a high pressure and a low pressure region.
The piston contacts the cylindrical chamber walls in~ a sweeping circular motion which moves in the same direction
Claims (2)
1. A rotary compressor comprising:
a frame defining a cylindrical aperture and a vane slot extending radially outwardly from said cylindrical aperture, said frame also defining a first inlet port extending radially outwardly from said cylindrical aperture through said frame on one side of said vane slot and a second inlet port extending radially outwardly from said cylindrical aperture through said frame, said second inlet port situated substantially diametrically opposite said vane slot;
a first check valve situated in said first inlet port for permitting flow only radially inwardly;
a vane slidably mounted in said vane slot;
a first journal bearing plate defining a journal bearing extending axially therethrough;
a second journal bearing plate defining a journal bearing extending axially therethrough, said first and second journal bearing plates situated on either side of said cylindrical aperture defining a cylindrical chamber, said second journal bearing plate further defining an outlet port extending axially through said second journal bearing plate, said outlet port situated on the other side of said vane from said first inlet port;
a second check valve situated in said outlet port for permitting flow only from said cylindrical chamber;
a shaft extending through said cylindrical chamber and rotatably mounted in the journal bearings of said first journal bearing plate and second journal bearing plate, the portion of said shaft situated in said cylindrical chamber having an eccentrically extending circular lobe; and a piston comprising an annular ring surrounding said circular lobe and contacting a portion of said cylindrical chamber periphery and said first and second journal bearing plates.
- 8 - RD-19,744
a frame defining a cylindrical aperture and a vane slot extending radially outwardly from said cylindrical aperture, said frame also defining a first inlet port extending radially outwardly from said cylindrical aperture through said frame on one side of said vane slot and a second inlet port extending radially outwardly from said cylindrical aperture through said frame, said second inlet port situated substantially diametrically opposite said vane slot;
a first check valve situated in said first inlet port for permitting flow only radially inwardly;
a vane slidably mounted in said vane slot;
a first journal bearing plate defining a journal bearing extending axially therethrough;
a second journal bearing plate defining a journal bearing extending axially therethrough, said first and second journal bearing plates situated on either side of said cylindrical aperture defining a cylindrical chamber, said second journal bearing plate further defining an outlet port extending axially through said second journal bearing plate, said outlet port situated on the other side of said vane from said first inlet port;
a second check valve situated in said outlet port for permitting flow only from said cylindrical chamber;
a shaft extending through said cylindrical chamber and rotatably mounted in the journal bearings of said first journal bearing plate and second journal bearing plate, the portion of said shaft situated in said cylindrical chamber having an eccentrically extending circular lobe; and a piston comprising an annular ring surrounding said circular lobe and contacting a portion of said cylindrical chamber periphery and said first and second journal bearing plates.
- 8 - RD-19,744
2. The invention as defined in any of the preceding claims including any further features of novelty disclosed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45948790A | 1990-01-02 | 1990-01-02 | |
| US459,487 | 1990-01-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2030063A1 true CA2030063A1 (en) | 1991-07-03 |
Family
ID=23824988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2030063 Abandoned CA2030063A1 (en) | 1990-01-02 | 1990-11-15 | Dual flow single cell rotary compressor |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0436331A1 (en) |
| CA (1) | CA2030063A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970027870A (en) * | 1995-11-04 | 1997-06-24 | 윌리엄 더블류. 하벨트 | Fixed element for sticking to rigid receptors |
| GB0130717D0 (en) * | 2001-12-21 | 2002-02-06 | Wabco Automotive Uk Ltd | Vacuum pump |
| WO2016143038A1 (en) * | 2015-03-09 | 2016-09-15 | 三菱電機株式会社 | Rotary compressor |
| CN112324663B (en) * | 2020-12-03 | 2021-10-15 | 珠海格力电器股份有限公司 | Pump body assembly, rolling rotor type compressor and air conditioner |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2095009A (en) * | 1932-05-10 | 1937-10-05 | Nash Kelvinator Corp | Refrigerating apparatus |
| US2299811A (en) * | 1938-02-26 | 1942-10-27 | Gen Motors Corp | Compressor for refrigerating apparatus |
| US2639855A (en) * | 1948-02-06 | 1953-05-26 | William T Daniels | Variable vacuum and pressure rotary pump |
| US4331002A (en) * | 1981-03-12 | 1982-05-25 | General Electric Company | Rotary compressor gas injection |
| JPS6048463A (en) * | 1983-08-25 | 1985-03-16 | 株式会社デンソー | Air-cooling refrigerator |
-
1990
- 1990-11-15 CA CA 2030063 patent/CA2030063A1/en not_active Abandoned
- 1990-12-14 EP EP90313625A patent/EP0436331A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0436331A1 (en) | 1991-07-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |