CN209457982U - Expansion machine - Google Patents
Expansion machine Download PDFInfo
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- CN209457982U CN209457982U CN201920140442.4U CN201920140442U CN209457982U CN 209457982 U CN209457982 U CN 209457982U CN 201920140442 U CN201920140442 U CN 201920140442U CN 209457982 U CN209457982 U CN 209457982U
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- expanding machine
- expansion mechanism
- valve module
- valve
- working fluid
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Abstract
The present disclosure relates to an expander that includes an expansion mechanism and a valve assembly. The expansion mechanism includes: a closed expansion chamber having a gradually increasing volume for expanding the working fluid; a discharge chamber for receiving the working fluid discharged from the expansion chamber; and a discharge passage for communicating the discharge chamber to a discharge space outside the expansion mechanism. The valve assembly is mounted to the expansion mechanism. The valve assembly is configured to: when the pressure of the working fluid in the discharge chamber is equal to or less than a predetermined expansion pressure, the valve assembly is in a closed state preventing the working fluid in the discharge chamber from flowing out to the discharge space; and when the pressure of the working fluid within the discharge chamber is greater than the predetermined expansion pressure, the valve assembly is in an open state that allows the working fluid within the discharge chamber to flow out into the discharge space.
Description
Technical field
This disclosure relates to a kind of expanding machine.
Background technique
The content of this part provides only background information relevant to the disclosure, the prior art may not constituted.
Expanding machine is the device for being expanded into low-pressure fluid using high-pressure fluid and exporting mechanical work or electric work outward.It is a kind of common
Expanding machine be scroll expander.The expansion mechanism of scroll expander includes dynamic vortex component and determine vortex component.Dynamic vortex portion
Part and determine vortex component are engaged with each other to form a series of expanding chamber that volumes are gradually increased between its blade, so that high
Pressure fluid becomes low-pressure fluid.Generate driving moment during fluid expansion, for example, band moving axis rotate with export mechanical work or
Electric work.
Performance of the expanding machine under certain operating condition is determined by output work and air inflow.The same air inflow the case where
Under, if output work is larger, expansion efficiency is higher.In other words, in the case where same output work, if air inflow is smaller,
Then expansion efficiency is higher.What the Design compression ratio of the scroll element of expanding machine was usually fixed.When the actual motion pressure of scroll element
When than being less than Design compression ratio, working fluid parectasis, output work reduces, and expansion efficiency is caused to reduce.
Therefore, it is necessary to a kind of expanding machines for being able to solve the problem of expanding caused expansion efficiency reduction.
Utility model content
One purpose of one or more embodiments of the utility model be to provide one kind be able to solve expansion cause
Expansion efficiency reduce the problem of expanding machine.
Another purpose of one or more embodiments of the utility model is to provide one kind and can be improved expansion efficiency
Expanding machine.
One aspect according to the present utility model provides a kind of expanding machine comprising expansion mechanism and valve module.It is described
Expansion mechanism includes: that volume becomes larger the closed expanding chamber for expanding working fluid；It is arranged for receiving from the expanding chamber
The discharge room of working fluid out；And the row for the discharge room to be connected to the emission quotas outside the expansion mechanism
Channel out.The valve module is installed to the expansion mechanism.The valve module is configured to: when the indoor working fluid of discharge
Pressure when being less than or equal to the predetermined bulbs of pressure, the valve module, which is in, prevents the indoor working fluid of the discharge from flowing out to institute
State the closed state of emission quotas；And when the pressure of the indoor working fluid of discharge is greater than the predetermined bulbs of pressure
When, the valve module, which is in, allows the indoor working fluid of discharge to flow out to the opening state in the emission quotas.
In other examples of the disclosure, the expanding machine further includes shell, and the expansion mechanism is accommodated in the shell
It is interior, and the emission quotas is limited in the shell.
In other examples of the disclosure, the valve module includes elastic valve plate, and the elastic valve plate, which has, is fixed to institute
The second end stating the first end of expansion mechanism and capable of being moved relative to the first end.
In other examples of the disclosure, the valve module further includes valve guard, and the valve guard is fixedly connected to described swollen
Swollen mechanism, and it is configured to the maximum open position of the second end for limiting the elastic valve plate.
In other examples of the disclosure, the valve module includes movable valve block and biasing member.The biasing member
It is configured to towards the initial position of the movable valve block bias the movable valve block so that the valve module is in the closing
State.
In other examples of the disclosure, the valve module further includes stop part, and the stop part is configured to for limiting
The maximum open position of the movable valve block.
In other examples of the disclosure, the stop part has flange in one end, and the flange is formed for installing
The shoulder of the biasing member.
In other examples of the disclosure, the expansion mechanism includes: dynamic vortex component, and the dynamic vortex component includes the
End plate and the dynamic vortex blade being formed in the first end plate；And determine vortex component, the determine vortex component include the
Two end plates and the determine vortex blade being formed on second end plate, the determine vortex blade connect each other with the dynamic vortex blade
It closes to form the expanding chamber therebetween.The passing away is arranged in the determine vortex component.
In other examples of the disclosure, the expanding machine include be arranged in the determine vortex component the second end plate and/
Or multiple passing aways in periphery wall, the valve module is provided in each passing away.
In other examples of the disclosure, multiple passing aways are along circumferential direction and/or axial direction is arranged.
In other examples of the disclosure, the valve module being arranged in multiple passing aways has different structures.
In other examples of the disclosure, the expansion mechanism is configured to: in expanding machine operation, the dynamic vortex
The outer circumferential end of component is capable of the inner circumferential wall of the neighbouring discharge room.
By explanation provided herein, other application fields be will become obvious.It should be understood that being described in this part
Particular example and embodiment for illustration purposes only without being attempt to limit the scope of the present disclosure.
Detailed description of the invention
The attached drawing of this part description is for illustration purposes only without being attempt to limit the scope of the present disclosure in any way.
Fig. 1 is the longitudinal profile of scroll expander.
Fig. 2 is the schematic elevation view according to the determine vortex component of disclosure embodiment；
Fig. 3 is the horizontal profile schematic diagram of the line A-A along Fig. 2.
Fig. 4 is the partial enlargement diagram of Fig. 3, wherein elastic valve plate is in the closed position.
Fig. 5 is the elastic valve plate schematic diagram in an open position for showing Fig. 4.
Fig. 6 is the decomposition diagram of the valve module of Fig. 2 to Fig. 5.
Fig. 7 is the longitudinal profile according to the determine vortex component of another embodiment of the disclosure.
Fig. 8 is the partial enlargement diagram of Fig. 7, wherein movable valve block is in the closed position.
Fig. 9 is the movable valve block schematic diagram in an open position for showing Fig. 8.
Figure 10 is the decomposition diagram of the valve module of Fig. 7 to Fig. 9.
Figure 11 is the schematic elevation view according to the expansion mechanism of disclosure embodiment.
Figure 12 is the schematic top plan view of the expansion mechanism of Figure 11.
Figure 13 is the longitudinal profile of the expansion mechanism of Figure 11.
Figure 14 is the horizontal profile schematic diagram of the expansion mechanism of Figure 11.
Specific embodiment
Following description is merely exemplary in nature without being attempt to the limitation disclosure, application and purposes.It should be appreciated that
In the drawings, corresponding reference number indicates similar or corresponding component and feature.
The essential structure and principle of scroll expander described below with reference to accompanying drawings.
As shown in Figure 1, the shell 12 of scroll expander (hereinafter also referred to as expanding machine) 10 including general cylindrical shape, setting exist
The top cover 14 of 12 one end of shell and the bottom cover 16 that 12 other end of shell is set.Shell 12, top cover 14 and bottom cover 16 are constituted
The shell with enclosure space of scroll expander 1.
Scroll expander 1 further includes being arranged between top cover 14 and shell 12 so that the inner space of expanding machine is separated into height
Press the partition 15 of side (also referred to as high-pressure space) and low-pressure side (also referred to as low-voltage space).It is constituted between partition 15 and top cover 14 high
Side is pressed, and constitutes low-pressure side between partition 15, shell 12 and bottom cover 16.High-pressure side be provided with for introduce high-pressure fluid (
Referred to as working fluid) air inlet pipe 17, low-pressure side be provided with for be discharged expansion after low-pressure fluid exhaust pipe 18.
Scroll expander 1 further includes the expansion mechanism being made of determine vortex component 80 and dynamic vortex component 70.Dynamic vortex portion
Part 70 can be relative to 80 translation rotation of determine vortex component (that is, the central axis of dynamic vortex component 70 is around determine vortex component 80
Central axis rotation, but dynamic vortex component 70 itself will not be rotated around the central axis of itself).The translation rotation passes through example
Cross slip-ring (not shown) between determine vortex component 70 and determine vortex component 80 is such as set to realize.
Dynamic vortex component 70 includes end plate 72, the hub 74 for being formed in end plate side and the spiral for being formed in the end plate other side
The blade 76 of shape.Determine vortex component 80 includes end plate 82, is formed in the spiral helicine blade 86 of end plate side and is formed in end plate
Substantial middle position at entrance 88.In the helical blade 86 of determine vortex component 80 and the helical blade 76 of dynamic vortex component 70
Between form a series of chamber that volumes are gradually increased when mobile to radial outside from radially inner side.Working fluid is in these chambers
It is expanded and pressure is gradually reduced in room since volume is gradually increased.
Herein to convenient for description, it will be by the helical-blade of the helical blade 86 of determine vortex component 80 and dynamic vortex component 70
The closed chamber formed between piece 76 is known as expanding chamber, and by with the tap or passing away of expansion mechanism (referring to Figure 13
In passing away 83a and 83b) in direct fluid communication with will expand working fluid discharge chamber be known as be discharged room.Referring to
Figure 13 and Figure 14, closed expanding chamber are indicated with appended drawing reference EC, and discharge room is indicated with reference number C C.Room CC is discharged positioned at swollen
The outermost radial outside of swollen room EC.In addition, for ease of description, the outer peripheral portion of determine vortex component 80 is known as periphery wall herein
81, as shown in Figure 13 and Figure 14.
Expanding machine 1 further includes main bearing seat 40.Main bearing seat 40 is fixed relative to shell 12 by suitable fastening means.
The end plate 72 of dynamic vortex component 70 is supported by main bearing seat 40.
Expanding machine 1 can also include rotary shaft (being referred to as output shaft) 30.Rotary shaft 30 is by being arranged in main bearing seat
Base bearing 44 in 40 is rotatably supported.One end of rotary shaft 30 is provided with eccentric crank pin 36.Dynamic vortex component
70 hub 74 drives the crank-pin 36 of rotary shaft 30, so that rotary shaft 30 be made to rotate.
Expanding machine 1 can also include the generator 20 being made of stator 22 and rotor 24.Stator 22 is fixed to shell 12.Turn
Son 24 is arranged between stator 22 and rotary shaft 30.Rotor 24 is fixed on the outer peripheral surface of rotary shaft 30, to run in expanding machine 1
When rotated together with rotary shaft 30 so that generator 20 can generate electricity.
When expanding machine 1 is run, high-pressure fluid enters the high-pressure side in the shell of expanding machine 1 via air inlet pipe 17, then
Enter expansion mechanism via entrance 88.High-pressure fluid into expansion mechanism flows through a series of expanding chamber EC that volume is gradually increased
And it is inflated and becomes low-pressure fluid.The low-pressure fluid is expelled to discharge room CC from expanding chamber, is then expanding via setting
Tap or passing away in mechanism are expelled to the outside of expansion mechanism, for example, the low-pressure side in the shell of expanding machine 1.?
Expansion mechanism generates driving moment during expanding to fluid, drive the rotation of rotary shaft 30 to export mechanical work or electricity
Function.Then, the low-pressure fluid in the shell of expanding machine 1 is discharged expanding machine 1 via exhaust pipe 18 again and continues to follow into system
Ring.
When expanding machine 1 is run, if the pressure of the working fluid in discharge room CC is lower than the predetermined bulbs of pressure (that is, the phase
The discharge pressure of prestige or predetermined discharge pressure), it means that working fluid is excessively expanded.In this case, output work is smaller,
Therefore the operational efficiency that will lead to expanding machine 1 reduces.To overcome the problems, such as this, it is contemplated that the excessive expansion in the CC of room will be discharged
Working fluid compressed (be properly termed as " exhaust compression "), be then exhausted from expansion mechanism when reaching the predetermined bulbs of pressure.
Moreover, it is further contemplated that the work of check valve and the expansion by being discharged from expanding chamber EC is arranged at passing away
Fluid come realize the exhaust compress.In other words, it when the hypotony for the working fluid being discharged in the CC of room, will be arranged by check valve
Gas channel (referring to the exhaust passage 83a and 83b in Figure 13) is closed without allowing to be discharged indoor working fluid discharge expanding machine
Structure, but exhaust passage is opened when reaching predetermined discharge pressure by exhaust compression working fluid to be discharged.
In the case where being not provided with check valve, when exhaust starts, a large amount of exhaust recharge to discharge room, so that discharge room
Pressure reaches pressure at expulsion, and then scroll plate pushes the gas with pressure at expulsion, gas is discharged.It is lost in this process
A part of function.In contrast, if being provided with check valve, one section of process before check valve opening, gas is in compressed mistake
Journey, the pressure in entire compression process are smaller than pressure at expulsion.So during this, the pressure for the gas that scroll plate pushes
Power is less than pressure at expulsion, so the energy for pushing gas to expend is lesser.Therefore, by discharge room in working fluid into
The working efficiency of expanding machine can be improved in row exhaust compression.
Below with reference to Fig. 2 to Fig. 6 to according to disclosure embodiment for the working fluid in discharge room CC into
The structure of row exhaust compression is described.
As shown in Figures 2 to 6, expanding machine 1 further includes installing to the valve module of expansion mechanism (check valve) 100.Fig. 2 extremely
In example shown in fig. 6, determine vortex component 80 includes the passing away 83a being arranged in periphery wall 81.Valve module 100 is mounted on
On the outer surface of periphery wall 81 and it is located at passing away 83a.
Valve module 100 includes elastic valve plate 110 and valve guard 130.Elastic valve plate 110 can be moved partly to play on or off
Close passing away 83a.Valve guard 130 is configured to the maximum open position for limiting elastic valve plate 110.
Elastic valve plate 110 can have the shape of substantially ligulate, and the periphery wall including being fixed to determine vortex component 80
81 first end 112 and the second end 114 that can be swung relative to first end 112.The second end 114 is referred to as
Free end.First end 112 has the aperture 116 of the fastener 150 for receiving such as screw or bolt.
Valve guard 130 can have shape similar with elastic valve plate 110, and have for being fixed to determine vortex component 80
Periphery wall 81 first end 132 and from first end 132 overhang the second end 134.The second end 134 is referred to as
Free end.First end 132 has the through-hole 136 of the fastener 150 for receiving such as screw or bolt.Valve guard 130 has
There are inclination or curved lower surface 131 to limit swing space for the second end 114 of elastic valve plate 110.By by fastener
150 pass through the aperture 116 of the through-hole 136 of valve guard 130 and elastic valve plate 110 and are connected to the periphery wall 81 of determine vortex component 80,
Valve guard 130 and elastic valve plate 110 can be installed to determine vortex component 80.
When the pressure for the working fluid being discharged in the CC of room is less than or equal to predetermined discharge pressure, elastic valve plate 110 is in
Closed position (initial position) shown in Fig. 4, to prevent the working fluid discharge in discharge room CC.Work in discharge room CC
When the pressure of fluid is greater than predetermined discharge pressure, the elastic force of elastic valve plate 110 itself and the work of expansion mechanism exterior space are overcome
Make the pressure of fluid and the second end 114 of elastic valve plate 110 is made to move to open position shown in fig. 5 towards valve guard 130, from
And it opens channel 83a and expansion mechanism is discharged with the working fluid for allowing to be discharged in the CC of room.
It is used for according to another embodiment of the disclosure to the workflow in discharge room CC below with reference to Fig. 7 to Figure 10
The structure that compression is exhausted in body is described.
As shown in Figure 7 to 10, expanding machine 1 includes valve module 300 of the installation to expansion mechanism.Shown in Fig. 7 to Figure 10
Example in, determine vortex component 80 includes the passing away 83b that is arranged in end plate 82.Valve module 300 is mounted on passing away
In 83b.
Valve module 300 includes movable valve block 310, biasing member 320 and stop part 330.Movable valve block 310 can close
It is translated between the closed position (initial position) of passing away 83b and the open position for opening passing away 83b.Biasing member
320 can be configured to bias movable valve block 310 towards initial position.Stop part 330 is configured to for limiting movable valve block 310
Maximum open position.
In Fig. 7 into example shown in Fig. 10, the rounded sheet of movable valve block 310.Biasing member 320 is helical spring.
Stop part 330 can be fixed to the end plate 82 of determine vortex component 80 by interference fit or fastener.Stop part 330 has circle
Columnar body portion 331 and the flange 332 to extend radially outwardly from one end of main part 331.Flange 332 is formd from main part
331 shoulders outstanding are in order to installing biasing member 320.
When the pressure for the working fluid being discharged in the CC of room is less than or equal to predetermined discharge pressure, movable valve block 310 is in
Closed position (initial position) shown in Fig. 8, to prevent the working fluid discharge in discharge room CC.Work in discharge room CC
When the pressure of fluid is greater than predetermined discharge pressure, the work of the bias force and expansion mechanism exterior space of biasing member 320 is overcome
The pressure of fluid and so that movable valve block 310 is moved to open position shown in Fig. 9 towards stop part 330, to open channel 83b
Expansion mechanism is discharged with the working fluid for allowing to be discharged in the CC of room.
Figure 11 to Figure 14 shows example of the expanding machine 1 with both valve modules 100 and 300.Specifically, in determine vortex portion
It is provided with exhaust passage 83a on the periphery wall 81 of part 80 and is provided with valve module 100 in exhaust passage 83a.In addition, fixed
It is provided with exhaust passage 83b on the end plate 82 of scroll element 80 and is provided with valve module 300 in exhaust passage 83b.Ying Li
Solution, can be arranged valve module 300 in exhaust passage 83a.Alternatively, valve module can be arranged in exhaust passage 83b
100.The valve module of different structure can be set at multiple exhaust passages, mutually isostructural valve module also can be set.
It, can be in determine vortex component by the example of Figure 11 to Figure 14 it is found that in order to increase the discharge area of working fluid
Multiple passing aways are set on 80 end plate 82 and/or periphery wall 81, and basis can be set in each passing away
The valve module 100 or 300 of the disclosure.These passing aways can along circumferential direction and/or axial direction (vertical direction or center
The direction of axis) arrangement.
For example, two or more passing aways can be arranged along circumferential direction on the end plate 82 of determine vortex component 80
83b, but passing away is not provided on periphery wall 81.Alternatively, can be on the periphery wall 81 of determine vortex component 80 along axial side
To setting two or more passing aways 83a, but passing away is not provided on end plate 82.Alternatively, can be in determine vortex portion
At least two passing aways are provided on the end plate 82 and periphery wall 81 of part 80.
It should be understood that passing away and quantity, the position and structure of all parts of valve module etc. can be according to realities
Border needs and changes, as long as can be realized above-mentioned function.For example, valve guard 130 and stop part 310 can be with determine vortex components
It is formed as one part.
Referring to Figure 14, room CC is discharged and is similar to helical blade 76 or 86 along hand of spiral extension and there is inner circumferential wall
85.Inner circumferential wall 85 is shown in figure as arc.Preferably, when expanding machine 1 is run, the outer circumferential end of dynamic vortex component 70
75 are capable of the inner circumferential wall 85 of neighbouring discharge room CC, it is possible thereby to reduce clearance volume as much as possible.
Herein to description the utility model, by taking vertical low-pressure side scroll expander as an example.Then, it should be understood that
The utility model can be adapted for the expanding machine of any suitable type, for example, rotor expansion machine, horizontal expander machine, high-pressure side are swollen
Swollen machine etc..
Although the various embodiments and possible some modifications of the disclosure have been described in detail herein, it should be appreciated that this
The open specific embodiment for being not limited to be described in detail and show here.In diagram and implementations described above
Each feature can be combined with each other in the absence of conflict, or can save.In the spirit and scope without departing from the disclosure
In the case where may be effected by one skilled in the art other modifications and variant.All these modifications and variant both fall within this reality
With in novel range.Moreover, all components described herein, component or feature can be by other structures and functionally etc.
With component, component or feature replace.
Claims (12)
1. a kind of expanding machine, which is characterized in that the expanding machine includes:
Expansion mechanism, the expansion mechanism include: that volume becomes larger the closed expanding chamber for expanding working fluid；For connecing
Receive the discharge room for the working fluid being discharged from the expanding chamber；And for the discharge room to be connected to outside the expansion mechanism
The passing away of the emission quotas in portion；And
Valve module, the valve module are installed to the expansion mechanism, and the valve module is configured to: when the indoor work of discharge
When the pressure of fluid is less than or equal to the predetermined bulbs of pressure, the valve module, which is in, prevents the indoor working fluid outflow of the discharge
To the closed state of the emission quotas；And when the pressure of the indoor working fluid of discharge is greater than the predetermined turgor pressure
When power, the valve module, which is in, allows the indoor working fluid of discharge to flow out to the opening state in the emission quotas.
2. expanding machine according to claim 1, which is characterized in that the expanding machine further includes shell, the expansion mechanism
It is accommodated in the shell, and the emission quotas is limited in the shell.
3. expanding machine according to claim 1, which is characterized in that the valve module includes:
Elastic valve plate, the elastic valve plate have the first end for being fixed to the expansion mechanism and can be relative to described first
The second end of end movement.
4. expanding machine according to claim 3, which is characterized in that the valve module further include:
Valve guard, the valve guard are fixedly connected to the expansion mechanism, and be configured to for limiting the elastic valve plate
The maximum open position of two ends.
5. expanding machine according to claim 1, which is characterized in that the valve module includes:
Movable valve block；And
Biasing member, the biasing member be configured to by the movable valve block towards the movable valve block initial position biasing with
The valve module is set to be in the closed state.
6. expanding machine according to claim 5, which is characterized in that the valve module further include:
Stop part, the stop part are configured to the maximum open position for limiting the movable valve block.
7. expanding machine according to claim 6, which is characterized in that the stop part has flange in one end, described convex
Edge forms the shoulder for installing the biasing member.
8. expanding machine according to any one of claim 1 to 7, which is characterized in that the expansion mechanism includes:
Dynamic vortex component, the dynamic vortex component include first end plate and the dynamic vortex blade that is formed in the first end plate；
And
Determine vortex component, the determine vortex component include the second end plate and the determine vortex blade that is formed on second end plate,
The determine vortex blade and the dynamic vortex blade are engaged with each other to form the expanding chamber therebetween,
Wherein, the passing away is arranged in the determine vortex component.
9. expanding machine according to claim 8, which is characterized in that the expanding machine includes being arranged in the determine vortex component
The second end plate and/or periphery wall in multiple passing aways, the valve module is provided in each passing away.
10. expanding machine according to claim 9, which is characterized in that multiple passing aways are along circumferential direction and/or axis
It is arranged to direction.
11. expanding machine according to claim 9, which is characterized in that the valve module in multiple passing aways is arranged in
With different structures.
12. expanding machine according to claim 8, which is characterized in that the expansion mechanism is configured to: being transported in the expanding machine
When row, the outer circumferential end of the dynamic vortex component is capable of the inner circumferential wall of the neighbouring discharge room.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920140442.4U CN209457982U (en) | 2019-01-25 | 2019-01-25 | Expansion machine |
| PCT/CN2019/115563 WO2020151298A1 (en) | 2019-01-25 | 2019-11-05 | Expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920140442.4U CN209457982U (en) | 2019-01-25 | 2019-01-25 | Expansion machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209457982U true CN209457982U (en) | 2019-10-01 |
Family
ID=68045968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920140442.4U Active CN209457982U (en) | 2019-01-25 | 2019-01-25 | Expansion machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209457982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020151298A1 (en) * | 2019-01-25 | 2020-07-30 | 艾默生环境优化技术(苏州)有限公司 | Expander |
| CN111485952A (en) * | 2019-01-25 | 2020-08-04 | 艾默生环境优化技术(苏州)有限公司 | Expansion machine |
-
2019
- 2019-01-25 CN CN201920140442.4U patent/CN209457982U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020151298A1 (en) * | 2019-01-25 | 2020-07-30 | 艾默生环境优化技术(苏州)有限公司 | Expander |
| CN111485952A (en) * | 2019-01-25 | 2020-08-04 | 艾默生环境优化技术(苏州)有限公司 | Expansion machine |
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