CN103541899B - Screw compressor - Google Patents
Screw compressor Download PDFInfo
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- CN103541899B CN103541899B CN201310562500.XA CN201310562500A CN103541899B CN 103541899 B CN103541899 B CN 103541899B CN 201310562500 A CN201310562500 A CN 201310562500A CN 103541899 B CN103541899 B CN 103541899B
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- Prior art keywords
- operating room
- rotor
- face
- rotation
- teeth groove
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—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
- F04C18/082—Details specially related to intermeshing engagement type pumps
- F04C18/086—Carter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2250/00—Geometry
- F04C2250/10—Geometry of the inlet or outlet
- F04C2250/101—Geometry of the inlet or outlet of the inlet
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
In screw compressor, if the opening time of axial port is too short, then performance reduces, if opening time is long, then enters into compression process due to operating room, there is the phenomenon returned from axial port by the gas once sucked in suction process.In order to improve performance, need the optimum controling method of the shut-in time of operating room.The present invention provides screw compressor, possesses the shell in hole carrying out under the intermeshing state of tooth of tooth and the female rotor being formed at male rotor receiving, it is arranged on the axial suction inlet of the suction side of shell and is arranged on the outlet of discharge side, axially suction inlet is by including that the line along sun profile of tooth and the contour line along the line of cloudy profile of tooth are constituted, line along sun profile of tooth, by the positive teeth groove of male rotor, the volume of the operating room that the cloudy teeth groove of female rotor and hole surround is maximum, the direction of rotation side of the male rotor following side profile line position of the positive teeth groove of the anglec of rotation of male rotor, the staggered angle of regulation is set.
Description
This divisional application is based on Application No. 201110136609.8, filing date May 25, denomination of invention in 2011
Divisional application for the Chinese patent application of " screw compressor ".
Technical field
The present invention relates to screw compressor, especially possess the axial suction inlet of the oilless screw compressor of synchromesh gear
Shape.
Background technology
In order to improve the energy conversion efficiency of screw compressor, volume efficiency, the most it is made that substantial amounts of effort.Determine
Performance a lot of because have, understand in the light of recent researches, and the contour shape of axial suction inlet can be to the volume of screw compressor
Efficiency produces impact.Generally, when axial suction inlet cannot ensure the aperture area of abundance, opening time, inhalation flow is caused
Minimizing, the reduction of volume efficiency, on the contrary when setting excessive aperture area and opening time, once it attracted to operating room
Fluid flow backwards in Compressing Engineering, result causes inhalation flow to reduce, volume efficiency reduce.
In patent documentation 1, describe the screw compressor being most suitable for having possessed the operating room that volume change is temporarily interrupted
The contour shape of axial suction inlet.It addition, in patent documentation 2, describe and increase suction by making suction action be interrupted
The method of flow.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 6-288369 publication
Patent documentation 2: Japanese Unexamined Patent Publication 10-9164 publication
Summary of the invention
Invention to solve the technical problem that
In patent documentation 1, patent documentation 2, the structure of screw compressor, the using method that can be suitable for are conditional on,
It is not reaching to the most wide variety of degree.Therefore, produce following problem, increase will be used for and can be suitably used for substantial amounts of screw compressor
Suction volume structure embody.
Therefore, the present invention makes in view of above-mentioned problem, its object is to provide the screw compressor in usual structure
In can improve the structure of energy conversion efficiency, volume efficiency.
In order to solve above-mentioned problem, the first invention is screw compressor, and this screw compressor is by being arranged at enclosure
, in the hole that partly overlapping two cylinder holes are constituted, two rotors of negative and positive, two rotors of these negative and positive can be equipped with the most rotatably
There is the tooth of torsion, keep small gap betwixt and engage each other, the teeth groove of above-mentioned male rotor and the tooth of above-mentioned female rotor
Groove is connected by engaging piece one by one and forms an operating room, moves and expand the operating room of internal volume along with the rotation of rotor
The end face suction side end face to above-mentioned hole, at this suction side end face, axial suction inlet, the knot of above-mentioned axial suction inlet are set
Structure is, the volume through above-mentioned operating room essentially becomes the anglec of rotation of maximum, from being in the position of smaller volume process, and then
When reaching discharge end face from operating room, to be moved the required time by the velocity of sound of compressed gas in the teeth portion length of rotor
Afterwards, suction inlet is closed.
It addition, the second invention is screw compressor, this screw compressor by be arranged at enclosure, partly overlapping
In the hole of two cylinder hole compositions, can be equipped with two rotors of negative and positive the most rotatably, two rotors of these negative and positive have the tooth of torsion,
Keeping small gap betwixt and engage each other, the teeth groove of above-mentioned male rotor and the teeth groove of above-mentioned female rotor are one by one by nibbling
The connection of conjunction portion and form an operating room, move along with the rotation of rotor and expand the end face of operating room of internal volume to upper
State the suction side end face in hole, axial suction inlet be set at this suction side end face,
The structure of the profile of above-mentioned axial suction inlet is, the volume in this operating room essentially becomes the rotation of the rotor of maximum
After angle, to be moved institute by the velocity of sound of compressed gas in the teeth portion length of rotor when reach discharge end face from operating room
The anglec of rotation of rotor as this suction inlet is closed, including along the part because forming this operating room after the time needed
The rotation of male rotor teeth groove and become the part of the contour line of the end face of rear side and form along because of the rotation of female rotor teeth groove
For the part the two part of contour line of the end face of rear side, the direction of rotation of two rotors of negative and positive of these contour lines contrary
Side opening, and direction of rotation side blocked by hole end surface.
Invention effect
In accordance with the invention it is possible to increase suction volume, realize high efficiency compressor.
Accompanying drawing explanation
Fig. 1 be embodiment 1 rotor to and the profile of suction inlet.
Fig. 2 is the expanded view of the hole outer peripheral face of embodiment 1.
Fig. 3 is the cross-sectional schematic of common screw compressor.
Fig. 4 be common screw compressor rotor to and the profile of suction inlet.
Fig. 5 is volume change and the chart of inhalation flow of the operating room of screw compressor.
Fig. 6 is that the figure that inflow profile amasss shape is described.
Symbol description
1 male rotor
2 female rotors
3 shells
4 holes
5 sun teeth groove
6 cloudy teeth groove
7 suction side end faces
8 discharge side end faces
9 operating rooms
10 synchromesh gears
11 axial suction inlets
Each line of 13～19 profiles constituting axial suction inlet
21 sun teeth groove follow side wheel profile
22 cloudy teeth groove follow side wheel profile
The traveling side wheel profile of 23 axial suction inlets 11
24 sun addendum lines
25 cloudy addendum lines
29 operating rooms (are in suction process) in internal volume expands
31 expand top-cross point
32 compressed side intersection points
Detailed description of the invention
Before describing embodiments of the present invention, the common structure of screw compressor is described with Fig. 3 and Fig. 4.
Fig. 3 is the cross-sectional schematic of screw compressor.1 is the male rotor of the tooth with torsion, and 2 is the tooth with torsion
Female rotor.As it can be seen, in screw compressor, male rotor 1 and female rotor 2 are housed in formation under intermeshing state
In the hole 4 of the inside of shell 3.Hole 4 is two cylindrical shapes being repeated a part, more specifically by covering male rotor 1
The cylindric outer peripheral face of teeth portion, cover the cylindric outer peripheral face of teeth portion, suction side end face 7 and the discharge side end face 8 of female rotor 2
Four faces are constituted.It is provided with axial suction inlet 11 described later at suction side end face 7, is provided with not shown discharge at discharge side end face 8
Mouthful.It addition, be arranged at the synchromesh gear 10 of one end of the axle of male rotor 1 and the synchronous gear of the one end of the axle being arranged at female rotor 2
Wheel 10 configures in the way of engagement, and the rotation with male rotor 1 drives synchronously to rotate and drives female rotor 2.The positive teeth groove of male rotor 1
5 spaces connected with the cloudy teeth groove 6 of female rotor 2 are covered by hole 4, form the operating room 9 as the space closed.Sun teeth groove 5 He
The space of cloudy teeth groove 6 connection exists multiple, and therefore operating room 9 also can be formed multiple.Each operating room 9 is along with the rotation of two rotors
Turn, move to discharge side end face 8 direction from suction side end face 7.It addition, in oilless screw compressor, synchromesh gear 10 that
This backlash arranges less than the teeth portion of male rotor 1 and female rotor 2 backlash each other, and the teeth portion of male rotor 1 and female rotor 2 is each other
Do not contact.Therefore, each operating room 9 is not the space closed strictly speaking, but is connected with adjacent operating room by gap.
But, the gas in operating room 9 leakage adjacent by gap is minimal amount of, can ignore.It addition, non-oilless screw pressure
Contracting machine lead to common oil, etc. seal clearance, the impact in the leakage each other of adjacent operating room 9 can be ignored.Therefore, below press
Each operating room 9 illustrates as independent space.
Fig. 4 is the figure of the common shape of the axial suction inlet 11 that suction side end face 7 setting in hole 4 is described.Such as arrow
Shown in, male rotor 1 is to turn clockwise, and female rotor 2 is to rotate counterclockwise.Two rotors on suction side end face 7 connect
The operating room 9 that position is formed, along with the rotation of two rotors, the front of operating room 9 is moved to discharge side end face 8, and is expanded
Internal volume.Now, supply by compressed gas to operating room 9 via axial suction inlet 11.Male rotor 1 side of axial suction inlet 11
It is maximum position that the contour line 18 of contour line 15 and female rotor 2 side is arranged on the internal volume of operating room 9.That is, in operating room 9
The period that internal volume expands, supply by compressed gas to the operating room 9 connected with axial suction inlet 11, in the content of operating room 9
The long-pending period reduced, do not supply new by compressed gas to the operating room 9 not connected with axial suction inlet 11.Afterwards, along with two
The rotation of individual rotor, the internal volume of operating room 9 reduces, therefore being compressed by compressed gas in operating room 9.The quilt being compressed by
Compressed gas is discharged from the outlet being arranged on discharge side end face 8.
[embodiment 1]
With Fig. 1, embodiments of the invention 1 are described.The structure being equal to Fig. 3, Fig. 4 is added identical label and omits
Bright.Fig. 1 (a) is the figure that explanation is arranged at the shape of the embodiment 1 of the axial suction inlet 11 of the suction side end face 7 in hole 4.Such as arrow
Shown in, male rotor 1 is to turn clockwise, and female rotor 2 is to rotate counterclockwise.With the operating room 9 represented by the oblique line of discharge side
For the position of maximum volume, the operating room thus being aligned in suction side is in the suction process of volume enlargement.
As shown in Fig. 1 (b), the contour line of axial suction inlet 11 by the line 13 of engaging piece, along sun tooth at the bottom of footpath circular arc 14,
Line 15 along sun profile of tooth, the circular arc 16 along sun tooth top footpath, the circular arc 17 along cloudy tooth top footpath, the line 18 along cloudy profile of tooth,
Constitute along seven contour lines of the circular arc 19 in footpath at the bottom of cloudy tooth.Wherein, describe in detail as big to the performance impact of compressor
Contour line, the line 15 along sun profile of tooth and the line 18 along cloudy profile of tooth.
In fig. l (a), the operating room 9 of the maximum volume represented with hatching is the cloudy both sides of sun and suction side end face 7 and row
Go out side end face 8 to connect.The profile of the teeth groove of each rotor of suction side end face 7 is divided in first side relative to the rotation of rotor and chases after
With these both sides, side.Wherein, the performance of compressor is produced impact big be to follow side, be below conceived to sun teeth groove 5 follows side
The side wheel profile 22 of following of contour line 21 and cloudy teeth groove 6 illustrates.
As shown in Fig. 1 (b), along the line 15 of sun profile of tooth, it is arranged on from operating room 9 as following side profile during maximum volume
Stagger the position of amount of Δ f1 clockwise in line 21 position.It addition, along the positional precision of line 15 of sun profile of tooth at root diameter
Within 1/20.
It addition, along the line 18 of cloudy profile of tooth, it is arranged on from operating room 9 as following side wheel profile 22 during maximum volume
Put the position of the amount of the Δ f2 that staggers counterclockwise.It addition, along sun profile of tooth line 18 positional precision root diameter 1/20 with
In.
Then, the expanded view in use hole 4 as shown in Figure 2, illustrate that the position between operating room 9 and axial suction inlet 11 is closed
System.Among the expanded view in the hole 4 shown in fig. 2, right side is the expanded view of sun side cylinder, and left side is the expansion of cloudy side cylinder
Figure.It addition, the lower end of expanded view is suction side end face 7, upper end is discharge side end face 8.Use is offered adjacently with suction side end face 7
Line 15 along sun profile of tooth and the line 18 along cloudy profile of tooth specify the axial suction inlet 11 at two ends.
The central ordinate represented with symbol 31 is, is in expansion side among the intersecting lens of sun side cylinder and cloudy side cylinder
Expansion top-cross point.The ordinate of the left and right sides represented with symbol 32 is, the positive side cylinder in hole 4 and the intersecting lens of cloudy side cylinder
Among be in the compressed side intersection point of compressed side.It addition, oblique line 24,25 and the oblique line parallel with them represent the tooth top of each rotor
Line.Among the operating room formed between each addendum line, sucking by compressed gas with the operating room faced by axial suction inlet 11,
Do not sucking by compressed gas with the operating room faced by axial suction inlet 11.
It addition, if two rotors of negative and positive rotate, the most as shown by arrows, operating room is moved upward, and inner capacities expands or subtracts
Little.
Illustrate that with Fig. 5 the operating room of the screw compressor to structure as above sucks by the process of compressed gas.Fig. 5
A () represents the volume of operating room when making rotor rotate.Fig. 5 (b) represents that the volume of the operating room tried to achieve by Fig. 5 (a) differential becomes
Rate.Fig. 5 (c) represents the volume flow that operating room sucks.It addition, in Figure 5, operating room is compared with axial suction inlet opening time
Capacity increases time length and represents that the axial suction inlet 11 of the present embodiment is bigger than common axial suction inlet.
First, the operating room that sun teeth groove and cloudy teeth groove connects is by connecing at suction side end face 7 and expansion top-cross point 31
The anglec of rotation of the rotor that point produces is set to θ0.It is θ in the anglec of rotation0～θ1Period, the opening of the operating room of suction side end face 7
Connect for sun teeth groove and cloudy teeth groove.It is θ in the anglec of rotation1Time, the opening of the operating room of suction side end face 7 is at sun teeth groove side and the moon
Teeth groove side separates.As shown in Fig. 5 (c), it is θ in the anglec of rotation1～θ2Period, the volume flow that operating room sucks is big, but is compressed
Gas is inhaled into operating room via two openings of male rotor side and female rotor side, is therefore reduced by crushing, it is possible to realize
Suck smoothly.
It is θ in the anglec of rotation2Time, if the front end of operating room arrives discharge side end face 8, then as shown in Fig. 5 (b), Fig. 5 (c),
The rate of change of the volume of operating room and the volume flow of suction are gradually lowered.It addition, be θ in the anglec of rotation3Time, operating room
Volume is maximum, is θ in the anglec of rotation3Afterwards, the volume of operating room is to reducing transformation.Should be conceived to herein, even if operating room
Volume, to reducing transformation, is also lasted till anglec of rotation θ by compressed gas to the suction of operating room4。
With Fig. 6, this reason is described.Fig. 6 represent from suction side shell by suction inlet to rotor suck by compressed gas
Flow regime.In the past, due to contemplate with along with the suction of the close state of the little resting state of inertia effect sucked,
Therefore there is the biggest inertia effect by the flow velocity of compressed gas, in the present embodiment, by using energy from what suction inlet sucked
Enough utilize the shape of the axial suction inlet 11 of this inertia effect, thus increase traffic attraction, improve volume efficiency.
Hereinafter, even if studying in more detail at swept volume of a single chamber after reducing transformation, it is also possible to suck by compressed gas
Reason.
If setting the radius at the bottom of male rotor teeth groove is θ as Rm, male rotor winding anglem, the radius at the bottom of female rotor teeth groove is Rf,
Female rotor winding angle is θf, the axial length of rotor is L, then the axial flute length L ' of operating room, if tooth bottom radius being set
Put minimum, can be expressed as follows,
(θ is Rad)
It is believed that flow into operating room by compressed gas before transferring to compression section, temperature and pressure substantially phase
Deng.By now be set to a by the velocity of sound of compressed gas.For non-oilless situation, repair with by vapor volumes such as oil or water
Velocity of sound just is defined.
From the stage that operating room's volume is minimum, operating room's volume expands along with the rotation of rotor, arrives in operating room
Discharging the stage of end face, the volume enlargement of operating room be maximum.Now, operating room arrives and discharges end face with by compressed gas
Sonic condition transmits to suction side.The Δ t axial flute length of such as operating room time lag of the compressibility according to this gas
L ' is expressed as
If rotary speed is set to ω, then offset angular Δ f is expressed as
Specifically, if in view of such as male rotor side channel long L ' m L ' longer than female rotor side channel f in short-term, then female rotor side tooth
Bottom radius Rf=30mm, winding angle θf=150 °, rotor axial length L=100mm, will by compressed gas be set to air,
During velocity of sound a=340m/s, Δ t=3.7 × 10-4Sec, if being set to 200 turns per second, then in time delay by the rotating speed of female rotor
Angle delta f that period moves is Δ f=27 °.Therefore, make the shut-in time of axial suction inlet, become maximum volume from operating room
Angle, be in theory Δ less than f=27 ° scope in postpone, accordingly, can expand suction inlet sectional area and suck time
Between, suction volume efficiency can be made to improve.
According to the screw compressor of embodiment 1 as above, the operating room being in suction process can be smooth and low
Crushing ground sucks by compressed gas, it addition, be prevented from being flow backwards by compressed gas of suction from operating room, and can increase suction
Enter amount.
It addition, the gas of any kind can be suitable for by the classification of compressed gas.It addition, about condition, it is stipulated that turned by sun
The shape (mainly length) of the operating room 9 that son 1 and female rotor 2 are formed, applicable various rotor tooth shapes, it addition,
Material not requirement to rotor etc..
[embodiment 2]
Embodiments of the invention 2 are described.In embodiment 1, it is that axial for Yang Yin suction inlet 11 was closed in the same time, and
In example 2, during the closedown only contour line 15 of the positive side wheel profile as axial suction inlet 11 recorded in embodiment 1
Between close.
Accordingly, though the maximum offset angular Δ f in female rotor side < < during the maximum offset angular Δ f of male rotor side, also
Efficiency can be realized improve.
[embodiment 3]
Embodiments of the invention 3 are described.In embodiment 1, it is that axial for Yang Yin suction inlet 11 was closed in the same time, and
In embodiment 3, during the closedown only contour line 18 of the cloudy side wheel profile as axial suction inlet 11 recorded in embodiment 1
Between close.
Accordingly, though the maximum offset angular Δ f in male rotor side < < during the maximum offset angular Δ f of female rotor side, also
Efficiency can be realized improve.
Claims (2)
1. a screw compressor, it is characterised in that be made up of two cylinder holes that be arranged at enclosure, partly overlapping
Hole in, two rotors of negative and positive can be equipped with the most rotatably, two rotors of these negative and positive have the tooth of torsion, keep small betwixt
Gap and engage each other,
The teeth groove of above-mentioned male rotor is connected by engaging piece one by one with the teeth groove of above-mentioned female rotor and forms an operating room, along with
The rotation of rotor and move and expand the end face of operating room of the internal volume suction side end face to above-mentioned hole, at this suction side
Face arranges axial suction inlet,
The structure of above-mentioned axial suction inlet is that the volume through above-mentioned operating room essentially becomes the anglec of rotation of maximum, from from
In the position of smaller volume process, so reach from operating room discharge end face time, to by the velocity of sound of compressed gas at rotor
Teeth portion length move the required time after, close suction inlet.
2. a screw compressor, it is characterised in that be made up of two cylinder holes that be arranged at enclosure, partly overlapping
Hole in, two rotors of negative and positive can be equipped with the most rotatably, two rotors of these negative and positive have the tooth of torsion, keep small betwixt
Gap and engage each other,
The teeth groove of above-mentioned male rotor is connected by engaging piece one by one with the teeth groove of above-mentioned female rotor and forms an operating room, along with
The rotation of rotor and move and expand the end face of operating room of the internal volume suction side end face to above-mentioned hole, at this suction side
Face arranges axial suction inlet,
The structure of the profile of above-mentioned axial suction inlet is, the anglec of rotation of the rotor when volume in this operating room essentially becomes maximum
After degree, when reach discharge end face from operating room, to be moved institute by the velocity of sound of compressed gas in the teeth portion length of rotor
After the time needed, close the anglec of rotation of the rotor of this suction inlet, including along the part because forming this operating room
The rotation of male rotor teeth groove and become the part of the contour line of the end face of rear side and become along the rotation because of female rotor teeth groove
The part the two part of the contour line of the end face of rear side, the opposition side of the direction of rotation of two rotors of negative and positive of these contour lines
Opening, and direction of rotation side blocked by hole end surface.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-118883 | 2010-05-25 | ||
| JP2010118883A JP5478362B2 (en) | 2010-05-25 | 2010-05-25 | Screw compressor |
| CN201110136609.8A CN102261332B (en) | 2010-05-25 | 2011-05-25 | Screw compressor |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110136609.8A Division CN102261332B (en) | 2010-05-25 | 2011-05-25 | Screw compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103541899A CN103541899A (en) | 2014-01-29 |
| CN103541899B true CN103541899B (en) | 2016-11-23 |
Family
ID=44681524
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110136609.8A Active CN102261332B (en) | 2010-05-25 | 2011-05-25 | Screw compressor |
| CN201310562500.XA Active CN103541899B (en) | 2010-05-25 | 2011-05-25 | Screw compressor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110136609.8A Active CN102261332B (en) | 2010-05-25 | 2011-05-25 | Screw compressor |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2390508B1 (en) |
| JP (1) | JP5478362B2 (en) |
| CN (2) | CN102261332B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6619987B2 (en) * | 2015-10-26 | 2019-12-11 | 株式会社アルバック | Screw pump |
| JP7189749B2 (en) * | 2018-12-04 | 2022-12-14 | 株式会社日立産機システム | screw compressor |
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|---|---|---|---|---|
| US2457314A (en) * | 1943-08-12 | 1948-12-28 | Jarvis C Marble | Rotary screw wheel device |
| US2481527A (en) * | 1944-06-29 | 1949-09-13 | Jarvis C Marble | Rotary multiple helical rotor machine |
| US4487563A (en) * | 1982-09-17 | 1984-12-11 | Hitachi, Ltd. | Oil-free rotary displacement compressor |
| CN101915241A (en) * | 2008-10-07 | 2010-12-15 | 伊顿公司 | High efficiency supercharger outlet |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5269667A (en) * | 1993-02-24 | 1993-12-14 | Ingersoll-Rand Company | Removabe discharge port plate for a compressor |
| JPH06288369A (en) | 1993-04-06 | 1994-10-11 | Hitachi Ltd | Suction port of screw compressor |
| JPH109164A (en) | 1996-06-19 | 1998-01-13 | Hitachi Ltd | Screw type fluid machine |
| DE19724643A1 (en) * | 1997-06-11 | 1998-12-17 | Sihi Gmbh & Co Kg | Screw compressor and method of operating the same |
| JP2000337283A (en) * | 1999-05-28 | 2000-12-05 | Tochigi Fuji Ind Co Ltd | Screw compressor |
-
2010
- 2010-05-25 JP JP2010118883A patent/JP5478362B2/en active Active
-
2011
- 2011-05-24 EP EP11167299.4A patent/EP2390508B1/en active Active
- 2011-05-25 CN CN201110136609.8A patent/CN102261332B/en active Active
- 2011-05-25 CN CN201310562500.XA patent/CN103541899B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2457314A (en) * | 1943-08-12 | 1948-12-28 | Jarvis C Marble | Rotary screw wheel device |
| US2481527A (en) * | 1944-06-29 | 1949-09-13 | Jarvis C Marble | Rotary multiple helical rotor machine |
| US4487563A (en) * | 1982-09-17 | 1984-12-11 | Hitachi, Ltd. | Oil-free rotary displacement compressor |
| CN101915241A (en) * | 2008-10-07 | 2010-12-15 | 伊顿公司 | High efficiency supercharger outlet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5478362B2 (en) | 2014-04-23 |
| JP2011247115A (en) | 2011-12-08 |
| EP2390508A2 (en) | 2011-11-30 |
| CN103541899A (en) | 2014-01-29 |
| EP2390508A3 (en) | 2014-09-24 |
| EP2390508B1 (en) | 2018-03-28 |
| CN102261332A (en) | 2011-11-30 |
| CN102261332B (en) | 2015-01-14 |
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