EP0878627A1 - Compressor with at least one compressor stage and a moisture separator - Google Patents
Compressor with at least one compressor stage and a moisture separator Download PDFInfo
- Publication number
- EP0878627A1 EP0878627A1 EP98201582A EP98201582A EP0878627A1 EP 0878627 A1 EP0878627 A1 EP 0878627A1 EP 98201582 A EP98201582 A EP 98201582A EP 98201582 A EP98201582 A EP 98201582A EP 0878627 A1 EP0878627 A1 EP 0878627A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor
- compressor according
- housing
- gas
- compressed
- 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.)
- Granted
Links
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
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/007—Venting; Gas and vapour separation during pumping
-
- 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
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C27/009—Shaft sealings specially adapted for 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
-
- 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
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
Definitions
- This invention relates to a compressor with at least one compressor stage and a moisture separator, whereby the compressor stage comprises a housing which is provided with an inlet for gas to be compressed and an outlet and comprises at least two cooperating compressor elements mounted in this housing, whereby at least one of which is rotatable.
- the gas compressed by a compressor stage which is heated by this compression, is cooled in an intermediate cooler. During this cooling, the moisture present in this gas is condensed in the form of humidity particles which are carried along with the gas to the subsequent compressor stage.
- a moisture separator is placed before this stage.
- This invention aims at a compressor which excludes the aforementioned and other disadvantages and which, in a constructionally simple, compact and relatively cheap manner, makes it possible in a practical manner to separate moisture from the gas to be compressed.
- this aim is achieved in that the inlet of the compressor stage is almost closed off by a rapidly rotating body made of material having a sufficiently low flow resistance for the gas in order to let the gas pass, but which keeps back moisture particles and other particles and whirls them radially away, which body is integrated in the housing.
- the body may be driven by the gas stream itself or by an external power source, but preferably, the inlet extends over a shaft with which the rotatable compressor element is beared in the housing, and the body is fixed on this shaft.
- the inlet may be provided with an enlargement forming a chamber wherein the whirled-away moisture is collected.
- This body may consist of cellular material with open cells or may be formed by a brush.
- a compressor stage of a screw compressor which substantially consists of a housing 1 in which two cooperating compressor elements 2 and 3, formed by screw-shaped rotors, are mounted in a rotatable manner.
- the housing 1 consists of various parts which are fixed to each other, for example, by means of bolts.
- the housing 1 determines an innermost space 4 in which the rotatable compressor elements 2 and 3 are situated.
- the rotatable compressor element 2 consists of a screw-shaped body 5 which, at both extremities, is axially provided with a shaft 6, 7 respectively.
- the shaft 6 is beared in a bearing 8 mounted in the housing 1 and connects directly or by the intermediary of a transmission to a drive motor, not represented in figure 1.
- the shaft 7 is beared in a ball-bearing 9 integrated in the housing 1. At the outside of this ball-bearing 9, a ring 10 is clamped onto the shaft 7.
- the rotatable compressor element 1 comprises a screw-shaped body 11 and, at both extremities thereof, a shaft 12, 13 respectively.
- the shaft 12 is beared in a ball-bearing 14 which is fixed in the housing 1.
- a clamping ring 10 is also clamped onto the shaft 12.
- the shaft 13 is beared in a bearing 15 which is also integrated in the housing 1.
- This shaft 13 extends with a prolonged extremity 13A beyond the bearing 15, namely up into a chamber 16 which is formed in an end wall of the housing 1 and forms part of the inlet 16-17-18 which, thus, extends over the shaft 13.
- the part 17 of the inlet connects the chamber 16 to the low-pressure side of the space 4, whereas the part 18 of the inlet, which has a smaller cross-section than the chamber 16, connects this chamber 16 to the exterior of the housing 1.
- a body 19 in the form of a round disc is fixed at the prolonged extremity 13A of the shaft 13, which body is manufactured of cellular material with open cells.
- the diameter of the body 19 is smaller than the diameter of the chamber 16, but larger than the diameter of the part 18 of the inlet 16-17-18 which, anyhow, is closed off almost completely by the body 19.
- the body 19 has a sufficiently low flow resistance in order to let the gas to be compressed, in particular air, pass.
- this body 19 consists of a hard foam made of synthetic material, of metal or of ceramic material.
- a very suitable material for the body 19 is a foam made of metal which is manufactured by depositing a metal layer, for example nickel or nickel-chromium, by means of a galvanic procedure on a polyurethane foam and subsequently removing this polyurethane foam by pyrolysis, or a foam made of ceramic material which is manufactured by the deposition of a ceramic material on a polyurethane foam and the subsequent thermic removal of this polyurethane foam, for example, by pyrolysis.
- a foam made of metal which is manufactured by depositing a metal layer, for example nickel or nickel-chromium, by means of a galvanic procedure on a polyurethane foam and subsequently removing this polyurethane foam by pyrolysis
- a foam made of ceramic material which is manufactured by the deposition of a ceramic material on a polyurethane foam and the subsequent thermic removal of this polyurethane foam, for example, by pyrolysis.
- a discharge channel 20 which extends up to outward the housing 1, is connected to the chamber 16.
- An outlet 21 for the compressed gas extends through the housing 1, at the side opposed to the inlet 16-17-18.
- the working of the compressor is simple and as follows.
- the gas to be compressed which possibly is already coming from a preceding compressor stage, is brought through the inlet 16-17-18 into the chamber 4 and compressed by means of the compressor elements 2 and 3.
- the compressed gas is discharged through outlet 21.
- this gas to be compressed flows through the rotating body 19 which is completely integrated in the housing 1, where the moisture particles are kept back and whirled radially out of the body 19.
- the flow direction of the gas to be compressed is indicated by arrows 22.
- Said moisture particles are collected at the bottom in the chamber 16, which is indicated by arrows 23, and discharged by the discharge channel 20.
- the compressor described heretofore thus, does not need a separate moisture separator.
- the body 19 forms a moisture separator integrated in the compressor stage, as a result of which the whole unit is compact and relatively cheap.
- the body 19 may be mounted on the shaft 6 of the compressor element 2, in which case the inlet has to extend over this shaft 6.
- the compressor differs from the one represented in figure 1 in that means are provided to direct the flow of the gas to be compressed in the body 19 substantially in the transverse direction towards the shaft 13.
- Said means are formed by a ring-shaped plate 24 which covers the side of the body 19 directed towards the part 18 of the inlet 16-17-18 and is fixed against this body, for example, glued, and by a second ring-shaped plate 25 which is fixed against the opposite side of the body 19 but which solely covers the exterior part of this side.
- the gas to be compressed flows through the chamber 16 and along the exterior edge of the body 19 into this body 19 and leaves this body next to the shaft 13, after separating the liquid particles which are radially whirled outside.
- the form of embodiment represented in figure 3 differs from the form of embodiment according to figure 1 by a different construction of the body 19 which, instead of a disc made of foam, is a round and, for example, disc-shaped brush.
- This brush preferably comprises steel bristles 26 which are directed almost radially and are fixed to a core 27, sitting, for example, clamped in a U-shaped groove.
- This core 27 is fixed, for example, glued, clamped of screwed on the prolonged extremity 13A of the shaft 13.
- the brush also lets the gas to be compressed pass, but keeps back moisture particles which, during rotation of the shaft 13 and, therefore, also of the brush, are whirled away radially and are collected in the chamber 16.
- the invention is not limited to screw compressors, but also applicable in other compressors, preferably with at least one rotatable compressor element upon which the body can be mounted.
Abstract
Compressor with at least one compressor stage and a
moisture separator, whereby the compressor stage comprises
a housing (1) which is provided with an inlet (16-17-18)
for gas to be compressed, and an outlet (21), and
comprises at least two cooperating compressor elements (2
and 3) mounted in this housing (1), at least one of which
is rotatable, characterized in that the inlet (16-17-18)
is almost closed off from the compressor stage by a
rapidly rotating body (19) made of material having a
sufficiently low flow resistance for the gas to be
compressed in order to let this gas pass, but which keeps
back moisture particles and other particles and whirls
them radially away, which body (19) is integrated in the
housing (1).
Description
This invention relates to a compressor with at least one
compressor stage and a moisture separator, whereby the
compressor stage comprises a housing which is provided
with an inlet for gas to be compressed and an outlet and
comprises at least two cooperating compressor elements
mounted in this housing, whereby at least one of which is
rotatable.
In a multi-stage compressor, the gas compressed by a
compressor stage, which is heated by this compression, is
cooled in an intermediate cooler. During this cooling,
the moisture present in this gas is condensed in the form
of humidity particles which are carried along with the
gas to the subsequent compressor stage.
In order to prevent that these moisture particles get
into the subsequent compressor stage, in the known
compressors mostly a moisture separator is placed between
the intermediate cooler and the subsequent compressor
stage.
These separate moisture separators, however, take a lot
of space, are relatively expensive and have a limited
separation capacity.
Also for the first compressor stage or in a one-stage
compressor, if moisture might be present in the gas to be
compressed, a moisture separator is placed before this
stage.
This invention aims at a compressor which excludes the
aforementioned and other disadvantages and which, in a
constructionally simple, compact and relatively cheap
manner, makes it possible in a practical manner to
separate moisture from the gas to be compressed.
According to the invention, this aim is achieved in that
the inlet of the compressor stage is almost closed off by
a rapidly rotating body made of material having a
sufficiently low flow resistance for the gas in order to
let the gas pass, but which keeps back moisture particles
and other particles and whirls them radially away, which
body is integrated in the housing.
Such bodies are already used for the separation of water
from an air stream, however, in separate separators.
The body may be driven by the gas stream itself or by an
external power source, but preferably, the inlet extends
over a shaft with which the rotatable compressor element
is beared in the housing, and the body is fixed on this
shaft.
At the height of this body, the inlet may be provided
with an enlargement forming a chamber wherein the
whirled-away moisture is collected.
This body may consist of cellular material with open
cells or may be formed by a brush.
With the intention of better showing the characteristics
of the invention, hereafter, by way of example without
any limitative character, a preferred form of embodiment
of a compressor with at least one compressor stage and a
moisture separator according to the invention is
described, with reference to the accompanying drawings,
wherein:
In figure 1, a compressor stage of a screw compressor is
represented which substantially consists of a housing 1
in which two cooperating compressor elements 2 and 3,
formed by screw-shaped rotors, are mounted in a rotatable
manner.
Due to constructive purposes, the housing 1 consists of
various parts which are fixed to each other, for example,
by means of bolts.
The housing 1 determines an innermost space 4 in which
the rotatable compressor elements 2 and 3 are situated.
The rotatable compressor element 2 consists of a screw-shaped
body 5 which, at both extremities, is axially provided
with a shaft 6, 7 respectively.
The shaft 6 is beared in a bearing 8 mounted in the
housing 1 and connects directly or by the intermediary of
a transmission to a drive motor, not represented in
figure 1.
The shaft 7 is beared in a ball-bearing 9 integrated in
the housing 1. At the outside of this ball-bearing 9, a
ring 10 is clamped onto the shaft 7.
In an analogous manner, the rotatable compressor element
1 comprises a screw-shaped body 11 and, at both extremities
thereof, a shaft 12, 13 respectively.
At one side, the shaft 12 is beared in a ball-bearing 14
which is fixed in the housing 1. At the outside of this
ball-bearing 14, a clamping ring 10 is also clamped onto
the shaft 12.
At the other side, the shaft 13 is beared in a bearing 15
which is also integrated in the housing 1.
This shaft 13 extends with a prolonged extremity 13A
beyond the bearing 15, namely up into a chamber 16 which
is formed in an end wall of the housing 1 and forms part
of the inlet 16-17-18 which, thus, extends over the shaft
13.
The part 17 of the inlet connects the chamber 16 to the
low-pressure side of the space 4, whereas the part 18 of
the inlet, which has a smaller cross-section than the
chamber 16, connects this chamber 16 to the exterior of
the housing 1.
In the chamber 16, a body 19 in the form of a round disc
is fixed at the prolonged extremity 13A of the shaft 13,
which body is manufactured of cellular material with open
cells.
The diameter of the body 19 is smaller than the diameter
of the chamber 16, but larger than the diameter of the
part 18 of the inlet 16-17-18 which, anyhow, is closed
off almost completely by the body 19.
The body 19 has a sufficiently low flow resistance in
order to let the gas to be compressed, in particular air,
pass.
In the form of embodiment represented in figure 1, this
body 19 consists of a hard foam made of synthetic
material, of metal or of ceramic material.
A very suitable material for the body 19 is a foam made
of metal which is manufactured by depositing a metal
layer, for example nickel or nickel-chromium, by means of
a galvanic procedure on a polyurethane foam and subsequently
removing this polyurethane foam by pyrolysis, or
a foam made of ceramic material which is manufactured by
the deposition of a ceramic material on a polyurethane
foam and the subsequent thermic removal of this polyurethane
foam, for example, by pyrolysis.
A discharge channel 20 which extends up to outward the
housing 1, is connected to the chamber 16.
An outlet 21 for the compressed gas extends through the
housing 1, at the side opposed to the inlet 16-17-18.
The working of the compressor is simple and as follows.
Due to the actuation, by means of the shaft 6, the body 5
is rotated which, in its turn, rotates the body 11 by
means of gearwheels or by direct contact.
The gas to be compressed, which possibly is already
coming from a preceding compressor stage, is brought
through the inlet 16-17-18 into the chamber 4 and
compressed by means of the compressor elements 2 and 3.
The compressed gas is discharged through outlet 21.
Thereby, this gas to be compressed flows through the
rotating body 19 which is completely integrated in the
housing 1, where the moisture particles are kept back and
whirled radially out of the body 19.
The flow direction of the gas to be compressed is
indicated by arrows 22.
Said moisture particles are collected at the bottom in
the chamber 16, which is indicated by arrows 23, and
discharged by the discharge channel 20.
The compressor described heretofore, thus, does not need
a separate moisture separator. The body 19 forms a
moisture separator integrated in the compressor stage, as
a result of which the whole unit is compact and
relatively cheap.
Instead of being mounted on the shaft 13 of the
compressor element 3, the body 19 may be mounted on the
shaft 6 of the compressor element 2, in which case the
inlet has to extend over this shaft 6.
The compressor, a part of which is represented in figure
2, differs from the one represented in figure 1 in that
means are provided to direct the flow of the gas to be
compressed in the body 19 substantially in the transverse
direction towards the shaft 13.
Said means are formed by a ring-shaped plate 24 which
covers the side of the body 19 directed towards the part
18 of the inlet 16-17-18 and is fixed against this body,
for example, glued, and by a second ring-shaped plate 25
which is fixed against the opposite side of the body 19
but which solely covers the exterior part of this side.
The gas to be compressed flows through the chamber 16 and
along the exterior edge of the body 19 into this body 19
and leaves this body next to the shaft 13, after
separating the liquid particles which are radially
whirled outside.
The form of embodiment represented in figure 3 differs
from the form of embodiment according to figure 1 by a
different construction of the body 19 which, instead of a
disc made of foam, is a round and, for example, disc-shaped
brush.
This brush preferably comprises steel bristles 26 which
are directed almost radially and are fixed to a core 27,
sitting, for example, clamped in a U-shaped groove. This
core 27 is fixed, for example, glued, clamped of screwed
on the prolonged extremity 13A of the shaft 13.
The brush also lets the gas to be compressed pass, but
keeps back moisture particles which, during rotation of
the shaft 13 and, therefore, also of the brush, are
whirled away radially and are collected in the chamber
16.
The invention is not limited to screw compressors, but
also applicable in other compressors, preferably with at
least one rotatable compressor element upon which the
body can be mounted.
The present invention is by no means limited to the forms
of embodiment described heretofore and represented in the
figures, on the contrary may such compressors be realized
in various variants without leaving the scope of the
invention.
Claims (14)
- Compressor with at least one compressor stage and a moisture separator, whereby the compressor stage comprises a housing (1) which is provided with an inlet (16-17-18) for gas to be compressed, and an outlet (21) and at least two cooperating compressor elements (2 and 3) mounted in this housing (1), at least one of which is rotatable, characterized in that the inlet (16-17-18) is almost closed off from the compressor stage by a rapidly rotating body (19) made of material having a sufficiently low flow resistance for the gas to be compressed in order to let this gas pass, but which keeps back moisture particles and other particles and whirls them radially away, which body (19) is integrated in the housing (1).
- Compressor according to claim 1, characterized in that the inlet (16-17-18) extends over a shaft (13) with which the rotatable compressor element (3) is beared in the housing (1) and the body (19) is fixed on this shaft (13).
- Compressor according to claim 1 or 2, characterized in that the body (19) is situated in a chamber (16) wich is formed by an enlargement of the inlet (16-17-18).
- Compressor according to claim 3, characterized in that a discharge channel (20) is connected to the chamber (16).
- Compressor according to any of the claims 1 to 4, characterized in that the body (19) has the shape of a disc.
- Compressor according to any of the claims 1 to 5, characterized in that the body (19) is manufactured of metal, synthetic material or ceramic material.
- Compressor according to any of the preceding claims, characterized in that the body (19) is manufactured of cellular material with open cells.
- Compressor according to claim 7, characterized in that the body (19) is manufactured by first covering plastic foam with open cells in a galvanic manner with metal or covering it with ceramic material and subsequently removing the plastic foam thermically.
- Compressor according to any of the claims 1 to 6, characterized in that the body (19) is a brush.
- Compressor according to claim 9, characterized in that the body (19) is a brush with almost radially directed bristles (26).
- Compressor according to any of the claims 1 to 10, characterized in that it is a screw compressor and the compressor stage comprises two rotatable, screw-shaped compressor elements (2 and 3) which, at both extremities, have a shaft (6-7-12-13) with which they are beared in the housing (1) and the body (19) is mounted on one of these shafts (6 or 13) in the inlet (16-17-18).
- Compressor according to any of the preceding claims, characterized in that means are provided in order to let the stream of the gas to be compressed through the body (19) flow, at least partially, into the transverse direction, towards the geometrical rotation axis of this body (19).
- Compressor according to claim 11, characterized in that the aforementioned means comprise at least one plate (24) which at least partially covers the side of the body (19) directed towards the incoming gas to be compressed.
- Compressor according to claim 13, characterized in that the aforementioned means comprise a plate (24) which at least partially covers the side of the body (19) directed towards the incoming gas to be compressed, and a plate (25) partially covering the opposite side of the body (19).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9700428A BE1010966A6 (en) | 1997-01-15 | 1997-05-16 | Compressor with at least one compressor stage and a moisture separator |
| BE9700428 | 1997-05-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0878627A1 true EP0878627A1 (en) | 1998-11-18 |
| EP0878627B1 EP0878627B1 (en) | 2003-03-05 |
Family
ID=3890519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19980201582 Expired - Lifetime EP0878627B1 (en) | 1997-05-16 | 1998-05-12 | Compressor with at least one compressor stage and a moisture separator |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0878627B1 (en) |
| JP (1) | JPH10318172A (en) |
| DE (1) | DE69811766T2 (en) |
| ES (1) | ES2198644T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2336567A3 (en) * | 2009-12-15 | 2012-04-04 | Gast Manufacturing, Inc. | Rotary vane pump with liquids separator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5527396B1 (en) * | 2012-12-17 | 2014-06-18 | ダイキン工業株式会社 | Screw compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2204814A (en) * | 1939-01-28 | 1940-06-18 | Westinghouse Air Brake Co | Fluid compressor |
| JPS6014920A (en) * | 1983-07-08 | 1985-01-25 | Mitsubishi Electric Corp | Gas-liquid separating apparatus |
| US4685509A (en) * | 1984-08-17 | 1987-08-11 | Mannesmann Aktiengesellschaft | Cooling device for a multistage compressor |
| US5435975A (en) * | 1992-04-01 | 1995-07-25 | Petroleo Brasileiro S.A. - Petrobras | Process and skid-mounted system for inert gas generation |
| EP0854290A1 (en) * | 1997-01-15 | 1998-07-22 | Atlas Copco Airpower N.V. | Compressor with at least one compressor stage and a moisture separator |
-
1998
- 1998-05-12 ES ES98201582T patent/ES2198644T3/en not_active Expired - Lifetime
- 1998-05-12 EP EP19980201582 patent/EP0878627B1/en not_active Expired - Lifetime
- 1998-05-12 DE DE69811766T patent/DE69811766T2/en not_active Expired - Fee Related
- 1998-05-13 JP JP13029498A patent/JPH10318172A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2204814A (en) * | 1939-01-28 | 1940-06-18 | Westinghouse Air Brake Co | Fluid compressor |
| JPS6014920A (en) * | 1983-07-08 | 1985-01-25 | Mitsubishi Electric Corp | Gas-liquid separating apparatus |
| US4685509A (en) * | 1984-08-17 | 1987-08-11 | Mannesmann Aktiengesellschaft | Cooling device for a multistage compressor |
| US5435975A (en) * | 1992-04-01 | 1995-07-25 | Petroleo Brasileiro S.A. - Petrobras | Process and skid-mounted system for inert gas generation |
| EP0854290A1 (en) * | 1997-01-15 | 1998-07-22 | Atlas Copco Airpower N.V. | Compressor with at least one compressor stage and a moisture separator |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 9, no. 125 (C - 283) 30 May 1985 (1985-05-30) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2336567A3 (en) * | 2009-12-15 | 2012-04-04 | Gast Manufacturing, Inc. | Rotary vane pump with liquids separator |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69811766T2 (en) | 2004-03-18 |
| DE69811766D1 (en) | 2003-04-10 |
| ES2198644T3 (en) | 2004-02-01 |
| EP0878627B1 (en) | 2003-03-05 |
| JPH10318172A (en) | 1998-12-02 |
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