CN103541770A - Scroll expander - Google Patents
Scroll expander Download PDFInfo
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- CN103541770A CN103541770A CN201310284407.7A CN201310284407A CN103541770A CN 103541770 A CN103541770 A CN 103541770A CN 201310284407 A CN201310284407 A CN 201310284407A CN 103541770 A CN103541770 A CN 103541770A
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- China
- Prior art keywords
- working fluid
- housing
- cover
- operating room
- live axle
- 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.)
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- 239000012530 fluid Substances 0.000 claims abstract description 69
- 238000005192 partition Methods 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 230000006837 decompression Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003042 antagnostic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F01C1/0207—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F01C1/0215—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F01C1/0207—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F01C1/0246—Details concerning the involute wraps or their base, e.g. geometry
- F01C1/0253—Details concerning the base
- F01C1/0261—Details of the ports, e.g. location, number, geometry
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
- F01C20/10—Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F01C20/14—Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using rotating valves
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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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/811—Actuator for control, e.g. pneumatic, hydraulic, electric
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
A scroll expander includes a housing, a main port, a high-pressure chamber, an operation chamber, a low-pressure chamber, a subport, a valve portion, an actuator, and a drive shaft. The high-pressure and low-pressure chambers are separated by a partition wall. The main port draws working fluid in the high-pressure chamber into the operation chamber. The subport introduces the working fluid from the high-pressure chamber to the operation chamber so that the volume of the working fluid in the operation chamber is variable. The valve portion selectively opens and closes the subport. The actuator is arranged in the low-pressure chamber. The drive shaft extends through the partition wall and connects the actuator and the valve portion with each other. When the drive shaft is actuated by the actuator, the subport is selectively opened and closed by the valve portion.
Description
Technical field
The present invention relates to scroll expansion machine.
Background technique
For example, Japanese Laid-Open Patent Publication No.2005-30386 discloses such scroll expansion machine.This scroll expansion machine comprises decompressor part, and this decompressor part is by two helical vortex rotating parts---that is, what be engaged with each other determines vortex and moving vortex---form.At moving vortex and determine to be limited with between vortex operating room (expansion chamber).The volume of operating room changes according to the moving motion of moving vortex.Central part place at decompressor housing is partly formed with inhalation port (master port).
By pump partial discharge to the working fluid of heat exchanger, in heat exchanger, obtain heat and there is High Temperature High Pressure, and then via inhalation port, by operating room, sucked and expand.Working fluid is transferred into outer peripheral portion, makes moving vortex carry out moving motion simultaneously, and from decompressor partial discharge, go out afterwards by the expansion in operating room.According to the moving motion of moving vortex produce mechanical energy (driving force).
The above-mentioned open variable-volume type decompressor part that also discloses the working fluid in operating room with variable-volume.As shown in Figure 7 A, in the end plate of housing 91, be formed with sliding valve hole 92.The open end of sliding valve hole 92 is by 93 sealings of backstop bolt.Can reciprocating guiding valve 94 and spring 95 be contained in sliding valve hole 92.And, in the end plate of housing 91, being formed with high pressure communication passage 91a, this high pressure communication passage 91a supplies with to sliding valve hole 92 working fluid that has obtained heat energy in heat exchanger and had High Temperature High Pressure.In housing 91, be formed with low-pressure continuous circulation passage 91b, this low-pressure continuous circulation passage 91b is communicated with the part contrary with open end of sliding valve hole 92 and operating room 96.In decompressor part 90, be furnished with control valve 97, the supply that control valve 97 is controlled from the working fluid of high pressure communication passage 91a.In housing 91, be formed with a pair of by-pass hole 98(subport), this by-pass hole 98 communicates with each other sliding valve hole 92 and operating room 96.In guiding valve 94, be formed with a pair of valve 94a of portion, the 94a of this valve portion optionally opens and closes this to by-pass hole 98.
When supplying with working fluid by high pressure communication passage 91a from control valve 97, the spring force of the pressure reduction antagonistic spring 95 between the pressure in the part of the pressure in the part of the ratio guiding valve 94 more close open end of sliding valve hole 92 and the more close low-pressure continuous circulation passage 91b of ratio guiding valve 94 of sliding valve hole 92 moves guiding valve 94 towards spring 95.Then, the 94a of valve portion of guiding valve 94 closes this to by-pass hole 98, thereby will no longer carry out by this, by-pass hole 98 is introduced to working fluid to operating room 96.
As shown in Figure 7 B, when supplying with while stopping from the working fluid of control valve 97 by high pressure communication passage 91a, pressure reduction between pressure in the part of pressure in the part of the ratio guiding valve 94 more close open end of sliding valve hole 92 and the more close low-pressure continuous circulation passage 91b of ratio guiding valve 94 of sliding valve hole 92 will no longer exist, thereby by the spring force of spring 95, guiding valve 94 be moved towards open end away from spring 95.Then, the 94a of valve portion of guiding valve 94 leaves this to by-pass hole 98, thereby also by this, by-pass hole 98 is introduced into working fluid operating room 96 from sliding valve hole 92 except working fluid being sucked in operating room 96 by inhalation port 91c.This has increased the volume that is sucked into the working fluid in operating room 96, has reduced the expansion ratio of working fluid in operating room 96 simultaneously.Thereby, prevented from being sucked into the working fluid overexpansion in operating room 96.
Yet the actuator arrangement consisting of guiding valve 94 and the spring 95 that is configured to the 94a of valve portion is moved is in sliding valve hole 92, wherein, the 94a of this valve portion optionally opens and closes this to by-pass hole 98, and the working fluid with High Temperature High Pressure is supplied in this sliding valve hole 92.Thereby, as the guiding valve 94 and the spring 95 that form the constituent elements of actuator, be exposed to the working fluid with High Temperature High Pressure, make guiding valve 94 and spring 95 probably deteriorated owing to thering is the working fluid of High Temperature High Pressure.
Summary of the invention
The object of this invention is to provide a kind of scroll expansion machine, this scroll expansion machine drive actuator, with movement of valve portion, optionally opens and closes subport by valve portion thus, suppresses constituent elements deteriorated of actuator simultaneously.
In order to realize aforementioned object and according to an aspect of the present invention, a kind of scroll expansion machine is provided, this scroll expansion machine comprise have inner peripheral surface housing, determine vortex, moving vortex, hyperbaric chamber, operating room, low pressure chamber, partition wall, master port, subport, valve portion and actuator.Determine the inner peripheral surface that vortex is contained in housing and is fixed to housing.Moving vortex is contained in housing and is arranged as towards determining vortex.Hyperbaric chamber is formed in housing, and pressurized working fluid is supplied to this hyperbaric chamber.Operating room is by determining vortex and moving vortex limits, and the working fluid of introducing from hyperbaric chamber expands operating room.Low pressure chamber is formed in housing, and in operating room, the working fluid of expansion and decompression is disposed to low pressure chamber.Partition wall is divided into hyperbaric chamber and low pressure chamber by the space in housing.Master port is sucked into the working fluid in hyperbaric chamber in operating room.Subport is introduced into operating room by the working fluid from hyperbaric chamber, makes the variable volume of the working fluid in operating room.Valve portion optionally opens and closes subport.Actuator applies driving force with movement of valve portion.Actuator arrangement is in low pressure chamber.Scroll expansion machine comprises live axle, and this live axle extends through partition wall and actuator and valve portion are connected to each other.When actuator activated drive axle, the movement of valve portion by the actuating of live axle, thus optionally open and close subport.
From in conjunction with only illustrating the following description of accompanying drawing of the principle of the invention with exemplary approach, it is obvious that other aspects and advantages of the present invention will become.
Accompanying drawing explanation
By following description and accompanying drawing with reference to current preferred implementation, can understand best the present invention and object and advantage, in the accompanying drawings:
Fig. 1 is that diagram is according to the complex fluid machine of a mode of execution and the view of rankine cycle system;
Fig. 2 is the cross sectional view along the line 2-2 intercepting of Fig. 1;
Fig. 3 is the cross sectional view of the state of first subport of diagram in two subports while being opened;
Fig. 4 is the cross sectional view of the state of two subports of diagram while being all opened;
Fig. 5 is that diagram is amplified cross sectional view according to the part of the electric motor of another mode of execution and its circumferential component;
Fig. 6 is that diagram is amplified cross sectional view according to the part of the electric motor of another mode of execution and its circumferential component;
Fig. 7 A and 7B are the cross sectional view of a part for the scroll expansion machine that diagram is traditional.
Embodiment
Hereinafter, with reference to Fig. 1 to Fig. 4, describe and will be installed in the complex fluid machine 10 in rankine cycle (Rankine cycle) system 70 according to an embodiment of the invention.
As shown in Figure 1, complex fluid machine 10 comprises housing 11.Housing 11 consists of cylindrical center housing structure 12, tabular front case member 13 and rear case member 14, wherein, tabular front case member 13 is connected to an end of central housing structure 12, and rear case member 14 is configured as the pipe that has closed end and be connected to central housing structure 12 the other end.Partition wall 12a is formed on the inner peripheral surface of central housing structure 12.Motor generator set 20 is contained in the space being limited by the inner peripheral surface of central housing structure 12, partition wall 12a and front case member 13.Motor generator set 20 comprises the stator 20a that is fixed to central housing structure 12 inner peripheral surfaces and the rotor 20b that is arranged in stator 20a inside.Rotor 20b is firmly-fixed to the running shaft 21 that is contained in housing 11 to rotate integratedly with running shaft 21.
An end of running shaft 21---, the left part of running shaft 21---via bearing B1, by front case member 13, rotatably supported, and the part at place, the other end of running shaft 21---, the right side part of running shaft 21---extend through the partition wall 12a of central housing structure 12.Bearing B2 is between running shaft 21 and the partition wall 12a of central housing structure 12, and running shaft 21 is rotatably supported by the partition wall 12a of central housing structure 12 via bearing B2.In addition, axle support member 22 is fixed on the inside of central housing structure 12, and the right part of running shaft 21 is rotatably supported by axle support member 22 via bearing B3.
At the partition wall 12a of central housing structure 12, in the surface of rear case member 14, around running shaft 21, be formed with oval recess 121a.And, the side plate 17 of closing recess 121a be fixed on central housing structure 12 partition wall 12a on the surface of rear case member 14.Pump chamber 18 is limited by recess 121a and side plate 17.Pump part P is contained in pump chamber 18.Pump part P comprises the driven gear (not shown) rotatably being supported by pump chamber 18 and is attached to the driving gear 18a of running shaft 21.The state that driven gear and driving gear 18a are engaged with each other in them.
In the partition wall 12a of central housing structure 12, be formed with suction passage 12d.An end of suction passage 12d is open in the outer surface of central housing structure 12, and the other end is communicated to pump chamber 18.In the partition wall 12a of central housing structure 12, be formed with discharge passage 12e.An end of discharge passage 12e is communicated to pump chamber 18, and the other end of discharge passage 12e is open in the outer surface of central housing structure 12.
In the space limiting at the inner peripheral surface by central housing structure 12, partition wall 12a and rear case member 14, scroll expansion machine part 30 is contained between axle support member 22 and the diapire 14a of rear case member 14.Decompressor part 30 is by determining vortex 31 and moving vortex 32 forms, wherein, determine vortex 31 and be contained in central housing structure 12 and be fixed on the inner peripheral surface of central housing structure 12, moving vortex 32 is contained in central housing structure 12 and is arranged in to be determined between vortex 31 and axle support member 22 and towards determining vortex 31.Determining vortex 31 comprises dish type fixing base 31a and from fixing base 31a, founds the fixedly volute 31b of portion establishing.Moving vortex 32 comprises disk shape movable substrate 32a and from movable substrate 32a, towards fixing base 31a, founds the movable volute 32b establishing.
Fixedly the 31b of volute portion and the activity volute 32b of portion are engaged with each other.Fixedly the distal face of the 31b of volute portion contacts with movable substrate 32a, and the distal face of the activity volute 32b of portion contacts with fixing base 31a.Fixing base 31a and the fixedly 31b of volute portion and movable substrate 32a and the movable volute 32b of portion limit operating room 35.
Give prominence to and be provided with eccentric shaft 21a from the position of the axis L skew of running shaft 21 at place, right part at running shaft 21.Lining 21b is fixed to eccentric shaft 21a.On lining 21b, via bearing B4, in the mode that can rotate with respect to lining 21b, support movable substrate 32a.
Between movable substrate 32a and axle support member 22, be provided with anti-rotation mechanism 36.Anti-rotation mechanism 36 consists of a plurality of looping pit 36a and a plurality of pin 36b, wherein looping pit 36a be arranged on movable substrate 32a in the surface of axle support member 22, pin 36b from the peripheral part towards movable substrate 32a of axle support member 22 outstanding and with the tolerance fit between pin 36b and respective annular hole 36a in corresponding looping pit 36a.
In housing 11, between fixing base 31a and rear case member 14, be limited with suction chamber 41.That is, suction chamber 41 is formed in housing 11.In the diapire 14a of rear case member 14, be formed with the inhalation port 41a being communicated with suction chamber 41.In the central part of fixing base 31a, be formed with master port 50, this master port 50 is communicated to the operating room 35 before expanding by suction chamber 41.Operating room 35 is formed in the radially central part of decompressor part 30.In addition, the radially outward position of the master port in fixing base 31a 50 is formed with the first subport 51 and the second subport 52.The first subport 51 by suction chamber 41 be arranged in a radially operating room 35 of two operating rooms 35 of the radial outside of the operating room 35 at central part place and be communicated with.The second subport 52 is communicated with suction chamber 41 with another operating room 35 being limited in two operating rooms 35 of radial outside of the operating room 35 in central part radially.
Radial outside position in the first subport 51 and the second subport 52 is given prominence to and is formed with annular and separation wall 42 from the surface of the diapire 14a towards rear case member 14 of fixing base 31a.The far-end of partition wall 42 contacts with the internal surface of the diapire 14a of rear case member 14.Annular seat component 43 is between the far-end of partition wall 42 and the diapire 14a of rear case 14.In housing 11, the movable outermost side face of the volute 32b of portion is, the outer circumferential face of partition wall 42, central housing structure 12 and rear case member 14 limit drain chamber 44.That is, drain chamber 44 is formed in housing 11.Thereby partition wall 42 is divided into suction chamber 41 and drain chamber 44 by rear case member 14 and the inner space of determining between vortex 31.And the discharge port 44a that is communicated to drain chamber 44 is formed in central housing 12.
As shown in Figure 2, attached on the surface of the diapire 14a towards rear case member 14 of fixing base 31a, in the position of the radially inner side of partition wall 42 have a roughly fan-shaped tabular valve portion 53, and this valve portion 53 optionally opens and closes the first subport 51 and the second subport 52.Valve portion 53 is fixed to fixing base 31a by screw member 531.Between valve portion 53 and screw member 531, be formed with small gap, valve portion 53 can be rotated around screw member 531.In valve portion 53, be formed with notch 53k.Master port 50 is positioned at the inside of notch 53k, and master port 5 can not be closed by valve portion 53.In the outer circumferential face of valve portion 53, be formed with the gear part 53g that bends to arc.
In the outer circumferential face of partition wall 42, be formed with cooperating recesses 42a.Electric motor 60 is fixed to this cooperating recesses 42a.Thereby electric motor 60 is arranged in drain chamber 44.Electric motor 60 has the cover 60b of motor part 60a and accommodating motor part 60a.Motor part 60a consists of unshowned stator and rotor.Live axle 61 is connected to motor part 60a.Live axle 61 extends through partition wall 42.An end of live axle 61 extends through cover 60b to be connected to motor part 60a, and the other end is connected to valve portion 53.By drive motor part 60a, can make live axle 61 rotations.Worm gear 61g is attached to the distal portion of live axle 61.Worm gear 61g meshes and engages with the gear parts 53g of valve portion 53.Thereby live axle 61 is by motor part 60a(electric motor 60) and valve portion 53 be connected to each other.
The part contrary with cooperating recesses 42a of cover 60b extends through rear case member 14 to be exposed to the outside of housing 11.In being exposed to the part of housing 11 outsides, cover 60b is formed with through hole 60h.Through hole 60h is towards housing 11 outsides.Wire 60e extends from motor part 60a, makes wire 60e extend to housing 11 outsides to be electrically connected to unshowned external power supply via through hole 60h.Electric power is supplied to motor part 60a with drive motor part 60a via wire 60e from external power supply.In addition, the cover inside of 60b and the outside of housing 11 communicate with each other via through hole 60h.
Between live axle 61 and partition wall 42, be positioned with the first sealing component S1 of annular.This first sealing component S1 prevents that the working fluid in suction chamber 41 from flowing in drain chamber 44 via the space between live axle 61 and partition wall 42.In addition, between cover 60b and cooperating recesses 42a, be positioned with the second annular sealing component S2 as sealing component.This second sealing component S2 prevents that the working fluid in drain chamber 44 from flowing in cover 60b via the space between the space between cover 60b and cooperating recesses 42a and cover 60b and live axle 61.In addition between cover 60b and rear case member 14, be positioned with, the 3rd sealing component S3 of annular.The 3rd sealing component S3 is by the sealing joint between drain chamber 44 and housing 11 outsides.
Next, hereinafter the rankine cycle system 70 to the complex fluid machine 10 of structure is arranged on wherein is as mentioned above described.
As shown in Figure 1, the heat absorber 71a of heat exchanger 71 is connected to discharge passage 12e via first flow 70a.Heat exchanger 71 has radiator 71b.Radiator 71b is arranged on the cooling water circulation path E1 being connected to as the motor E of waste heat source.Radiating fin E2 is arranged on the E1 of cooling water circulation path.Cooling water circulation path E1 is configured so that cooling water circulates in the E1 of cooling water circulation path as the fluid of cooled engine E.
Inhalation port 41a is connected to the discharge unit of the heat absorber 71a in heat exchanger 71 via the second runner 70b.In addition, condenser 72 is connected to discharge port 44a via the 3rd runner 70c.Suction passage 12d is connected to the discharge unit of condenser 72 via the 4th runner 70d.Rankine cycle system 70 comprise by by pump part P, heat exchanger 71, decompressor part 30 and condenser 72 with this loop that is linked in sequence and forms.
Next, will the operation of present embodiment be described.
When motor generator set 20 is actuated to driven pump part P when as motor, the working fluid in pump chamber 18 flow in heat exchanger 71 by discharge passage 12e and first flow 70a.Then, in heat exchanger 71, according to the heat exchange between heat absorber 71a and radiator 71b, working fluid is by the waste heat from motor E and receive heat energy to have High Temperature High Pressure.
The working fluid due to the heat exchange in heat exchanger 71 with High Temperature High Pressure is inhaled in operating room 35 and is expanded by the second runner 70b, inhalation port 41a, suction chamber 41 and master port 50.Therefore, in the present embodiment, suction chamber 41 is corresponding to hyperbaric chamber, and the working fluid due to the heat exchange in heat exchanger 71 with High Temperature High Pressure is supplied to this hyperbaric chamber.
According to the expansion of the working fluid in operating room 35, decompressor part 30 produces---, and output---mechanical energy (driving force).According to this driving force, moving vortex 32 via eccentric shaft 21a around axis (the spin axis L of the running shaft 21) moving of determining vortex 31.By anti-rotation mechanism 36, stop moving vortex 32 to be rotated, but only allow its moving.By the moving motion of moving vortex 32, change the volume of operating room 36.When the moving motion by moving vortex 32 makes running shaft 21 rotation, motor generator set rotates to serve as generator.Now, the driving force of motor generator set 20 converts electric power to, and this electric power is charged to battery (not shown).
The working fluid that has expanded in operating room 35 and reduced pressure is disposed to drain chamber 44.Therefore, in the present embodiment, drain chamber 44 is corresponding to low pressure chamber, and in operating room, the working fluid of expansion and decompression is supplied to this low pressure chamber.The working fluid that has been disposed to drain chamber 44 passes condenser 72 to be liquefied by discharge port 44a and the 3rd runner 70c.Then, in condenser 72, the working fluid of liquefaction is back to pump chamber 18 by the 4th runner 70d and suction passage 12d.
As shown in Figure 2, when when the first subport 51 and the second subport 52 are all rotated in one direction by the motor part 60a under valve portion 53 closed conditions, live axle 61 is driven by the rotating force of motor part 60a---: rotation, and valve portion 53 via worm gear 61g and gear part 53g, around screw member 531, the side in arrow A 1 rotates up.Therefore, in the present embodiment, electric motor 60(motor part 60a) serve as actuator, this actuator applies driving force with movement of valve portion 53 to valve portion 53.
Afterwards, as shown in Figure 3, valve portion 53 becomes leaves the first subport 51, and the first subport 51 is communicated with suction chamber 41 with the operating room 35 of two operating rooms 35 of radial outside that is arranged in the operating room 35 of the radially central part that is limited to decompressor part 30.Thus, via the first subport 51, working fluid is introduced into the operating room 35 being communicated with the first subport 51 from suction chamber 41, the volume of the working fluid in operating room 35 is increased, the expansion ratio of the working fluid in operating room 35 reduces simultaneously.
As shown in Figure 4, when valve portion 53 is further rotated in the direction of arrow A 1, valve portion 53 becomes leaves the second subport 52, and the second subport 52 is communicated with suction chamber 41 with another operating room 35 of two operating rooms 35 of radial outside that is arranged in the operating room 35 of the radially central part that is limited to decompressor part 30.Thus, via the second subport 52, working fluid is introduced into the operating room 35 being communicated with the second subport 52 from suction chamber 41, the volume of the working fluid in operating room 35 is increased, the expansion ratio of the working fluid in operating room 35 reduces simultaneously.Thereby the suction variable volume of the operating room 35 in decompressor part 30, makes it possible to the suction volume of adjustment operation chamber 35 best, to operate decompressor part 30 under optimum condition.
Because electric motor 60 is arranged in drain chamber 44, therefore can prevent that electric motor 60 is exposed to the working fluid with High Temperature High Pressure in suction chamber 41, valve portion 53 is arranged in this suction chamber 43.Therefore it is deteriorated that the constituent elements that, has suppressed electric motor 60 is subject to having the working fluid of High Temperature High Pressure.And the situation that is exposed to the working fluid with High Temperature High Pressure with electric motor 60 is compared, the cooling performance of electric motor 60 is improved.
Above-mentioned mode of execution tool has the following advantages.
(1) electric motor 60 is arranged in drain chamber 44.In addition, decompressor part 30 is provided with live axle 61, and this live axle 61 extends through partition wall 42 and electric motor 60 and valve portion 53 are connected to each other.When live axle 61 is driven by electric motor 60, the driving by live axle 61 is moved valve portion 53, thereby optionally opens and closes the first subport 51 and the second subport 52.Therefore, can prevent that electric motor 60 is exposed to the working fluid with High Temperature High Pressure.Thereby by driving electric motor 60 that live axle 61 is driven, valve portion 53 is moved.Therefore, the quality that has suppressed the constituent elements of electric motor 60 reduces, and can pass through to drive electric motor 60 and movement of valve portion 53 simultaneously, thereby optionally open and close the first subport 51 and the second subport 52 by valve portion 53.
(2) according to present embodiment, owing to having prevented that electric motor 60 is exposed to the working fluid with High Temperature High Pressure, the situation that is exposed to the working fluid with High Temperature High Pressure with electric motor 60 is compared, and the cooling performance of electric motor 60 is improved.
(3) part of the cover 60b of electric motor 60 extends through housing 11 to be exposed to the outside of housing 11.The position that is exposed to housing 11 outsides at cover 60b is formed with through hole 60h, and through hole 60h is communicated with the inside of cover 60b with the outside of housing 11.Thereby the pressure of cover 60b inside is identical with the pressure of housing 11 outsides, make without sealing component being set with by the sealing joint covering between the inside of 60b and the outside of housing 11 between wire 60e and through hole 60h.Therefore, reduced the quantity of parts.
(4) worm gear 61g is attached to the far-end of live axle 61.Worm gear 61g meshes and engages with the gear parts 53g of valve portion 53.When the rotating force by motor part 60a makes live axle 61 rotation, via worm gear 61g and gear parts 53g, valve portion 53 is moved.Thereby, even if valve portion 53 tends to vibration, by worm gear 61g, engage with the engagement between gear parts 53g the position that is also easy to maintaining valve portion 53.Therefore, suppressed the vibration of valve portion 53.
Can retrofit as follows to above-mentioned mode of execution.
As shown in Figure 5, can omit the second sealing component S2, and can to prevent from covering between the inside of 60b and the outside of housing 11, communicate with each other at the 4th sealing component S4 that is positioned with annular between through hole 60h and wire 60e.According to this structure, the working fluid in drain chamber 44 is flow into and is covered in 60b by the interface between cover 60b and cooperating recesses 42a and the interface between cover 60b and live axle 61, and the pressure that makes to cover 60b inside is identical with the pressure in drain chamber 44.This structure makes to cover the pressure of 60b inside and the problem elimination that the pressure reduction between the pressure in drain chamber 44 causes cover 60 distortion.
As shown in Figure 6, can omit the first sealing component S1, and the 4th sealing component S4 that can be positioned with annular between through hole 60h and wire 60e is to prevent the covering inside of 60b and the outside of housing 11 communicates with each other.According to this structure, the working fluid in suction chamber 41 is flow into and is covered in 60b by the interface between the interface between live axle 61 and partition wall 42 and cover 60b and live axle 61, and the pressure that makes to cover 60b inside is identical with the pressure in suction chamber 41.As a result, the inside of cover 60b is heated by the working fluid with High Temperature High Pressure, makes to cover between the temperature of 60b inside and the temperature of the working fluid in drain chamber 44 to produce temperature difference.According to temperature difference, due to the temperature of the fluid temperature lower than cover 60b inside, the working fluid that the heat of cover 60b inside probably dissipates to drain chamber 44.Thereby the cooling performance of electric motor 60 is able to further improvement.In addition, due to the first sealing component S1 being set in the interface without between partition wall 42 and live axle 61, so can prevent from causing the generation of the slip resistance between live axle 61 and the first sealing component S1 when the first sealing component S1 is positioned between partition wall 42 and live axle 61.Thereby live axle 61 is driven smoothly, thereby valve portion 53 is moved smoothly.
In the present embodiment, the quantity of subport does not limit especially.
In the present embodiment, for the fluid from waste heat source, for example, can use the waste gas of motor E.
In the present embodiment, electric motor 60 is suitable for as actuator.This structure is not limited to this.For example, can adopt the fluid pressure cylinder that live axle is directly driven by fluid.Can be by making live axle directly drive the valve portion that optionally opens and closes subport is moved.
In the present embodiment, suction chamber 41 is as hyperbaric chamber, and drain chamber 44 is as low pressure chamber.Yet the part except suction chamber 41 with high pressure can be used as hyperbaric chamber, and the part except drain chamber 44 with low pressure can be used as low pressure chamber, and valve portion 53 and electric motor 60 can be arranged at respectively in hyperbaric chamber and low pressure chamber.
Although the present invention is implemented by the complex fluid machine 10 being arranged in rankine cycle system 70, this structure is not limited to this.The present invention can be implemented by the independent scroll expansion machine of use.The scroll expansion machine that the present invention can be arranged to be arranged in refrigerating circuit by compressor and clutch mechanism each other is integratedly implemented.
Therefore, it is illustrative and nonrestrictive that this example and mode of execution should be considered as, and the present invention is not limited to the details providing in literary composition, but can in the scope of claims and equivalent, retrofit.
Claims (5)
1. a scroll expansion machine, comprising:
Housing, described housing has inner peripheral surface;
Determine vortex, describedly determine the described inner peripheral surface that vortex is contained in described housing and is fixed to described housing;
Moving vortex, described moving vortex is contained in described housing and is arranged to determines vortex towards described;
Hyperbaric chamber, described hyperbaric chamber is formed in described housing, and pressurized working fluid is supplied to described hyperbaric chamber;
Operating room, described operating room is determined vortex and described moving vortex limits by described, and the working fluid of introducing from described hyperbaric chamber expands described operating room;
Low pressure chamber, described low pressure chamber is formed in described housing, and in described operating room, the working fluid of expansion and decompression is disposed to described low pressure chamber;
Partition wall, described partition wall is divided into described hyperbaric chamber and described low pressure chamber by the space in described housing;
Master port, described master port is sucked into the described working fluid in described hyperbaric chamber in described operating room;
Subport, described subport is introduced into described operating room by the described working fluid from described hyperbaric chamber, makes the variable volume of the described working fluid in described operating room;
Valve portion, described valve portion optionally opens and closes described subport;
Actuator, described actuator applies driving force with the described valve of movement portion, and described actuator arrangement is in described low pressure chamber; And
Live axle, described live axle extends through described partition wall and described actuator and described valve portion is connected to each other, wherein,
When described live axle is activated by described actuator, described valve portion is moved by the actuating of described live axle, makes described subport be selectively opened and close.
2. scroll expansion machine according to claim 1, wherein, described actuator comprises electric motor.
3. scroll expansion machine according to claim 2, wherein,
Described electric motor comprises motor part and divides accommodating cover therein by described motor part,
A part for described cover extends through described housing to be exposed to the outside of described housing,
Described covering in the part that is exposed to described outside has through hole, and
The inside of described cover and the outside of described housing communicate with each other via described through hole.
4. scroll expansion machine according to claim 2, wherein,
Described electric motor comprises motor part and divides accommodating cover therein by described motor part,
Described live axle extends through described cover to be connected to described motor part, and
The inside of described cover and described low pressure chamber communicate with each other via the interface between described cover and described live axle.
5. scroll expansion machine according to claim 2, wherein,
Described electric motor comprises motor part and divides accommodating cover therein by described motor part,
Described live axle extends through described cover to be connected to described motor part,
Between described cover and described partition wall, be furnished with sealing component, and
The inside of described cover and described hyperbaric chamber communicate with each other via the interface between the interface between described partition wall and described live axle and described cover and described live axle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012154423A JP2014015901A (en) | 2012-07-10 | 2012-07-10 | Scroll type expander |
| JP2012-154423 | 2012-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103541770A true CN103541770A (en) | 2014-01-29 |
Family
ID=48782930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310284407.7A Pending CN103541770A (en) | 2012-07-10 | 2013-07-08 | Scroll expander |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140017104A1 (en) |
| EP (1) | EP2687674A2 (en) |
| JP (1) | JP2014015901A (en) |
| CN (1) | CN103541770A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140219844A1 (en) * | 2013-02-06 | 2014-08-07 | Daimler Ag | Expansion device for use in a working medium circuit and method for operating an expansion device |
| US10221634B2 (en) * | 2015-04-14 | 2019-03-05 | Nabors Drilling Technologies Usa, Inc. | Catwalk system and method |
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| CN1005496B (en) * | 1986-05-14 | 1989-10-18 | 三菱重工业株式会社 | Eddy fluid machinery |
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| JPH06307357A (en) * | 1993-04-28 | 1994-11-01 | Mitsubishi Heavy Ind Ltd | Scroll compressor |
| JPH07279879A (en) * | 1994-04-01 | 1995-10-27 | Mitsubishi Heavy Ind Ltd | Volume control device for scroll compressor |
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| JP2004301054A (en) * | 2003-03-31 | 2004-10-28 | Toyota Industries Corp | Hybrid compressor |
| JP4747775B2 (en) * | 2005-01-11 | 2011-08-17 | 株式会社豊田自動織機 | Scroll compressor |
| JP5360348B2 (en) * | 2005-07-11 | 2013-12-04 | デクセリアルズ株式会社 | Thermosetting epoxy resin composition |
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- 2012-07-10 JP JP2012154423A patent/JP2014015901A/en active Pending
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2013
- 2013-07-02 US US13/933,653 patent/US20140017104A1/en not_active Abandoned
- 2013-07-08 EP EP13175487.1A patent/EP2687674A2/en not_active Withdrawn
- 2013-07-08 CN CN201310284407.7A patent/CN103541770A/en active Pending
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|---|---|---|---|---|
| CN1005496B (en) * | 1986-05-14 | 1989-10-18 | 三菱重工业株式会社 | Eddy fluid machinery |
| CN1115998A (en) * | 1993-11-05 | 1996-01-31 | 三菱电机株式会社 | Scroll compressor |
| CN1517512A (en) * | 2003-01-28 | 2004-08-04 | ��ʽ�����װ | Fluid machine and waste heat recovery system with the fluid machine |
| JP2005030386A (en) * | 2003-06-20 | 2005-02-03 | Denso Corp | Fluid machine |
| CN1957181A (en) * | 2004-05-24 | 2007-05-02 | 大金工业株式会社 | Rotary compressor |
| CN101002004A (en) * | 2004-08-05 | 2007-07-18 | 大金工业株式会社 | Displacement type expansion machine and fluid machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140017104A1 (en) | 2014-01-16 |
| JP2014015901A (en) | 2014-01-30 |
| EP2687674A2 (en) | 2014-01-22 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20140129 |