US20110002797A1 - Rotary machine - Google Patents
Rotary machine Download PDFInfo
- Publication number
- US20110002797A1 US20110002797A1 US12/662,631 US66263110A US2011002797A1 US 20110002797 A1 US20110002797 A1 US 20110002797A1 US 66263110 A US66263110 A US 66263110A US 2011002797 A1 US2011002797 A1 US 2011002797A1
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- United States
- Prior art keywords
- housing
- scroll
- rotors
- rotor
- rotational units
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- 239000012530 fluid Substances 0.000 claims abstract description 78
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 6
- 238000009877 rendering Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 14
- 238000005096 rolling process Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005057 refrigeration Methods 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
- F04C23/008—Hermetic pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids 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
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids 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
- F04C18/023—Rotary-piston pumps specially adapted for elastic fluids 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 both members are moving
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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
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/32—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members
- F04C18/332—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members with vanes hinged to the outer member and reciprocating with respect to the inner member
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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
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/0085—Prime movers
Definitions
- the present invention relates to a rotary machine, more particularly a rotary machine compressing a working fluid and able to rotate by expansion of the fluid. Further, it relates to a rotary machine compressing and pumping a non-compressible fluid and able to rotate by the fluid wherein the volume changes due to an orbiting part as seen in scroll and rolling piston types etc.
- Japanese Unexamined Patent Publication No. 5-332262 discloses a compressor designed to engage two parts having scroll laps and driving both with different motors.
- International Patent Publication WO 2006/067844 discloses a compressor engaging a part having a scroll lap on both surfaces with two fixed scrolls and driving the former with a motor.
- the present invention was proposed to solve the above problems and has as its object to provide a rotary machine aiming at smaller size and lighter weight.
- a rotary machine sucking in working fluid through a suction port into its housing to render it a high pressure and discharging it through a discharge port provided with a motor stator provided at an inside circumferential surface of the housing and having inside surfaces which include a step surface designed to enclose a housing interior cavity by the inside surfaces; first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other; the first and second rotational units further provided with working chambers, the volumes of the working chambers formed by the first and second rotational units made variable by rotation together with the first and second motor rotors, which render the working fluid sucked in through the suction port a high pressure by reduction of the volumes; and high pressure
- a motor stator having inside surfaces including a step surface designed to enclose the housing interior cavity is provided at the housing inside circumferential surface so as to drive the first and second rotational parts together with the first and second motor rotors at the inside of this inside surface, so a smaller size, lighter weight, and further cost reduction can be realized.
- a rotary machine sucking in working fluid through a suction port into its housing and able to rotate by expansion of the fluid provided with a motor stator provided at an inside circumferential surface of the housing and having inside surfaces which include a step surface designed to enclose a housing interior cavity by the inside surfaces; first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other; the first and second rotational units further provided with working chambers, the volumes of the working chambers formed by the first and second rotational units made variable by rotation of the first and second rotational units, which expand the working fluid introduced into the housing; and expansion of the working fluid by the working chambers causing the first and second rotational units and the first and second motor rotors to rotate so as to extract
- working fluid introduced into the housing is expanded by the working chambers so as to make the first and second motor rotors rotate together with the first and second rotational units and take out electricity, so a smaller size, lighter weight, and further lower costs can be realized.
- the first and second rotational units are first and second rotational units in a scroll type rotary machine, the first and second rotational units provided with a first scroll rotor and a second scroll rotor eccentrically engaging with the first scroll rotor; and the first and second scroll rotors are rotatably supported at the housing by respective bearings adjoining and eccentric to each other, and the first and second scroll rotors are respectively supported through the first and second motor rotors by thrust bearings at the housing in the thrust direction.
- first and second second scroll rotors ( 61 , 71 ) are driven while engaging with each other inside a motor stator having an inner diameter able to receive the first and second scroll rotors, so a smaller size, lighter weight, and further lower costs can be realized.
- the first and second rotational unit are first and second rotational units in a scroll type rotary machine, the first and second rotational units provided with a first scroll rotor having a substantially circular end plate part and spiral shaped scroll vane part and a second scroll part having a substantially circular end plate part and spiral shaped scroll vane part; the scroll vane parts of the first scroll rotor and second scroll rotor engage eccentrically with each other to thereby form a plurality of working chambers taking in working fluid and rendering it high pressure between the scroll vane parts; and a high pressure cavity is defined inside of the inside wall at the side opposite to the discharge port in the housing so that a first pressure is applied to either of the end plate parts of the first or second scroll rotor, a second pressure applied to the plurality of the working chambers as a whole being set so as to become smaller than the first pressure so as to eliminate the bearing for receiving the force in the thrust direction for
- the bearing in the thrust direction for the inside wall of the housing at the side where the high pressure cavity is defined can be omitted, so the structure can be simplified significantly, contributing to smaller size and lighter weight.
- a rotary piston type rotary machine sucking in working fluid through a suction port into its housing to render it a high pressure and discharging it through a discharge port, provided with a motor stator provided at an inside circumferential surface of the housing and having inside surfaces which include a step surface designed to enclose a housing interior cavity by the inside surfaces; first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other; the first and second rotational units provided with first and second rotors respectively arranged between a first side plate and middle plate or between the middle plate and a second side plate through a shaft, first and second cylinders arranged eccentric to the first and second rotors respectively, first and second working chambers respectively formed between the first rotor
- a rolling piston type rotary machine enabling a simplified structure, smaller size, and lighter weight.
- a swing type rotary machine sucking in working fluid through a suction port into its housing to render it a high pressure and discharging it through a discharge port provided with a motor stator provided at an inside circumferential surface of the housing and having inside surfaces which include a step surface designed to enclose a housing interior cavity by the inside surfaces; first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other; the first and second rotational units provided with first and second rotors respectively arranged between a first side plate and middle plate or between the middle plate and a second side plate through a shaft, first and second cylinders arranged eccentric to the first and second rotors respectively, first and second working chambers respectively formed between the first rot
- a rolling piston type rotary machine enabling a simplified structure, smaller size, and lighter weight.
- FIG. 1 is a cross-sectional explanatory view of a scroll type rotary machine of an embodiment of the present invention.
- FIG. 2 is a cross-sectional explanatory view showing another embodiment of a scroll rotor in the scroll type rotary machine shown in FIG. 1 .
- FIG. 3A is a cross-sectional explanatory view of the main parts of the rotary machine shown in FIG. 1 when cut along a line A-A. Along with FIGS. 3B to 3D , it explains the process of the scroll vanes of the first and second scroll rotors compressing a working fluid.
- FIG. 3B is a cross-sectional explanatory view of the main parts of the rotary machine shown in FIG. 1 when cut along a line A-A.
- FIG. 3C is a cross-sectional explanatory view of the main parts of the rotary machine shown in FIG. 1 when cut along a line A-A.
- FIG. 3D is a cross-sectional explanatory view of the main parts of the rotary machine shown in FIG. 1 when cut along a line A-A.
- FIG. 4 is a cross-sectional explanatory view of a scroll type rotary machine of another embodiment of the present invention.
- FIG. 5 is a cross-sectional explanatory view of a rolling piston type rotary machine of an embodiment of the present invention.
- FIG. 6 is a cross-sectional explanatory view of the rolling piston type rotary machine shown in FIG. 5 when cut along a line B-B.
- FIG. 7A is a cross-sectional explanatory view of the main parts of the rolling piston type rotary machine shown in FIG. 5 explaining the process of it compressing the working fluid.
- FIG. 7B is a cross-sectional explanatory view of the main parts of the rolling piston type rotary machine shown in FIG. 5 explaining the process of it compressing the working fluid.
- FIG. 7C is a cross-sectional explanatory view of the main parts of the rolling piston type rotary machine shown in FIG. 5 explaining the process of it compressing the working fluid.
- FIG. 8 is a cross-sectional explanatory view of a swing type rotary machine of an embodiment of the present invention.
- FIG. 9 is a cross-sectional explanatory view of the swing type rotary machine shown in FIG. 8 when cut along a line C-C.
- FIG. 10A is a cross-sectional explanatory view of the main parts of the swing type rotary machine shown in FIG. 8 explaining the process of it compressing the working fluid.
- FIG. 10B is a cross-sectional explanatory view of the main parts of the swing type rotary machine shown in FIG. 8 explaining the process of it compressing the working fluid.
- FIG. 10C is a cross-sectional explanatory view of the main parts of the swing type rotary machine shown in FIG. 8 explaining the process of it compressing the working fluid.
- FIG. 1 is a cross-sectional view showing the overall configuration of a compressor when using a hermetic scroll type rotary machine as a compressor for an air-conditioning machine.
- This scroll type rotary machine 1 is a rotary machine that sucks in working fluid through a suction port 14 into its housing 2 to render it a high pressurize and discharges it through a discharge port 15 .
- This rotary machine 1 is provided with a motor stator 3 provided at an inside circumferential surface of the housing 2 and having inside surfaces, which include a step surface S, designed to enclose a housing interior cavity by its inside surfaces, first and second motor rotors 4 , 5 arranged at the insides of the inside surfaces of the motor stator 3 separated at the step surface S, and first and second rotational units 6 , 7 , the first and second rotational units 6 , 7 coupled to the first and second motor rotors 4 , 5 respectively and the first and second rotational units 6 , 7 supported by the bearings 8 , 8 ′ at the housing 2 adjoiningly and eccentrically to each other.
- a motor stator 3 provided at an inside circumferential surface of the housing 2 and having inside surfaces, which include a step surface S, designed to enclose a housing interior cavity by its inside surfaces, first and second motor rotors 4 , 5 arranged at the insides of the inside surfaces of the motor stator 3 separated at the step surface S, and first and second rotation
- first and second rotational units 6 , 7 are provided with working chambers 12 having volumes changed by making the first and second rotational units 6 , 7 rotate along with the first and second motor rotors 4 , 5 and rendering working fluid that is sucked in through the suction port 14 to the housing 2 a high pressure by reducing the volumes.
- first and second rotational units 6 , 7 are connected at the step surface S, whereby equal sized first and second cylindrical cavities 31 , 32 are formed.
- the first and second rotational units 6 , 7 have axial centers eccentric with each other and can rotate about their corresponding axial centers.
- the first and second rotational units 6 , 7 are provided with a first scroll rotor 61 and a second scroll rotor 71 eccentrically engaging with the first scroll rotor 61 .
- the first scroll rotor 61 has a substantially circular end plate part 61 a and a spiral shaped scroll vane part 61 c .
- the second scroll rotor 71 has a substantially circular end plate part 71 a and a substantially same shaped spiral shaped scroll vane part 71 c engaging with the scroll vane part 61 c of the first scroll rotor 61 .
- the first and second scroll rotors 61 , 71 are supported rotatably with respect to the housing 2 by bearings 8 , 8 ′ respectively and are supported in the thrust direction (direction of force acting in the axial direction) by thrust bearings 10 , 11 , 10 ′, 11 ′ by interposing the first and second motor rotors 5 , 7 respectively.
- a scroll vane part 61 c At one surface of the end plate part 61 a of the first scroll rotor 61 , there is formed a scroll vane part 61 c . At the other surface of the end plate part 61 a , there is provided a substantially cylindrical boss part 61 b protruding toward a cover 21 of the housing 2 . A holding part 21 a is protrudes out at the cover 21 of the housing 2 .
- the first scroll rotor 61 has the cylindrical boss part 61 b inserted into the holding part 21 a of the housing 2 whereby it is rotatably supported by the bearing 8 .
- a scroll vane part 71 c At one surface of the end plate part 71 a of the second scroll rotor 71 , there is formed a scroll vane part 71 c . At the other surface of the end plate part 71 a , there is provided a protruding boss part 71 b .
- the second scroll rotor 71 has the boss part 71 b inserted into the holding part 22 a protruding out from the bottom 22 side of the housing 2 , whereby it is rotatably supported by the bearing 8 ′.
- the first motor rotor 4 is fixed to the end plate part 61 a where of the first scroll rotor 61 at the side where the boss part 61 b is formed.
- a permanent magnet 41 is set at the first motor rotor 4 .
- the first motor rotor 4 is supported in the thrust direction by the cover 21 of the housing 2 and the thrust bearings 10 , 11 without hinderance to rotation.
- the second motor rotor 5 is fixed to the end plate part 71 a of the second scroll rotor 71 at the side where boss part 71 b is formed.
- a permanent magnet 51 is set at the second motor rotor 5 .
- the second motor rotor 5 is supported by the bottom 22 of the housing 2 and the thrust bearings 10 ′, 11 ′ without hinderance to rotation.
- the first and second scroll rotors 61 , 71 have scroll vane parts 61 c , 71 c eccentrically engaging with each other, whereby the spiral shaped vane parts 61 c , 71 c between them form a plurality of crescent shaped working chambers 12 (explained later) taking in and compressing working fluid.
- a high pressure working chamber (not shown) where the pressure of the compressed working fluid is the highest.
- a discharge port 13 for discharging the compressed working fluid from the high pressure working chamber.
- a suction port 14 is formed at the bottom 22 side for taking in working fluid to the housing 2 .
- a discharge port 15 is formed at the center of the cover 21 of the housing 2 .
- the suction port 14 is connected to the working chambers 12 formed between the spiral shaped scroll vane parts 61 c , 71 c of the first and second scroll rotors 61 , 71 .
- the discharge port 15 at the center of the cover 21 of the housing 2 is connected with the discharge port 13 of the boss part 61 b at the first scroll rotor 61 .
- reed valve 16 is interposed biased so as to normally block the passage with a spring member 16 s.
- a hermetic terminal 17 At the bottom 22 of the housing 2 , there is interposed a hermetic terminal 17 . Electricity is fed through the hermetic terminal 17 from an external controller (not shown) to a coil 3 c of the motor stator 3 .
- the reed valve 16 can also be replaced with a poppet valve 18 such as shown in FIG. 2 .
- the poppet valve 18 openably blocks the passage from the discharge port 13 to the discharge port 15 and is configured from a valve element 18 a , spring member 18 b , and spring holder 18 c.
- the motor stator 3 If electricity is fed to the motor stator 3 inside the housing 2 through the hermetic terminal 17 from the external controller, the motor stator 3 is magnetized, whereby the first and second motor rotors 4 , 5 set with the permanent magnets 41 , 51 are made to rotate.
- the first and second motor rotors 4 , 5 are coupled with the first and second scroll rotors 61 , 71 , so these rotate as one unit.
- the first and second scroll rotors 61 , 71 are supported respectively by the bearings 8 , 8 ′ eccentric to the housing 2 , so the scroll vane parts 61 c , 71 c rotate eccentrically while engaging with each other centered about these bearings 8 , 8 ′.
- the first and second scroll rotors 61 , 71 rotate while the scroll vane parts 61 c , 71 c engage. Due to this, working fluid that entered the housing interior cavity from the suction port 14 at the bottom 22 of the housing 2 spreads to the working chambers 12 between the spiral shaped vane parts 61 c , 71 c . Then, working fluid is gradually fed to the scroll center.
- the compressed working fluid from the high pressure working chamber at the center region of the first and second scroll rotors 61 , 71 pushes through the reed valve 16 , passes through the discharge port 13 , and is discharged outside from the discharge port 15 at the center of the cover 21 of the housing 2 .
- the scroll type rotary machine 1 is configured from the first and second motor rotors integral with the first and second scroll rotors 61 , 71 and a motor stator 3 having first and second cylindrical cavities 31 , 32 eccentric to each other, so smaller size, lighter weight, and further lower costs can be realized.
- FIG. 3A to FIG. 3D show an engaged state of the scroll vane parts 61 c , 71 c of the first and second scroll rotors 61 , 71 of the rotary machine shown in FIG. 1 when cut along the line A-A.
- phase the rotational position of the scroll vane part 61 c shown at FIG. 3A (hereinafter, referred to as “phase”) is defined as “0” degree.
- the scroll vane part 71 c of the second scroll rotor 71 is 180 degrees out of phase from the scroll vane part 61 c of the first scroll rotor 61 .
- phase of the vane part 61 c of the first scroll rotor 61 is shown to be 90 degrees
- phase of the vane part 61 c of the first scroll rotor 61 is shown to be 180 degrees
- phase of the vane part 61 c of the first scroll rotor 61 is shown to be 270 degrees.
- the working fluid is sealed by the working chambers 12 ⁇ 1 , 12 ⁇ 1 .
- the first and second scroll rotors 61 , 71 rotate integrally along with the rotation of the first and second motor rotors 4 , 5 .
- the working chamber 12 ⁇ 1 becomes narrower in the order of 12 ⁇ 1 ⁇ 12 ⁇ 2 ⁇ 12 ⁇ 3 ⁇ 12 ⁇ 4 ⁇ 12 ⁇ 5 , whereby the working fluid is compressed and rendered a high pressure.
- the working chamber 12 formed between the scroll vane parts 61 c , 71 c reaches the center working chamber 12 ⁇ , it reaches a position where it is able to connect with the discharge port 13 (the reed valve 16 is in a closed state). Further, the working chamber 12 becomes narrower in the order of the working chamber 12 ⁇ working chamber 12 ⁇ . If becoming higher than a predetermined pressure, the fluid pushes through the reed valve 16 at the discharge port 13 and is discharged from the discharge port 15 at the center of the cover 21 of the housing 2 to the outside.
- the working chamber 1231 also similarly becomes narrower in the order of 12 ⁇ 1 ⁇ 12 ⁇ 2 ⁇ 12 ⁇ 3 ⁇ 12 ⁇ 4 ⁇ 12 ⁇ 5 , whereby the working fluid is compressed and rendered a high pressure. If the working chamber 12 formed between the scroll vane parts 61 c , 71 c becomes the central working chamber 12 ⁇ , it reaches a position where it is able to connect with the discharge port 13 .
- the working chamber 12 becomes narrower in the order of working chamber 12 ⁇ working chamber 12 ⁇ , where if the working fluid has a pressure higher than a predetermined pressure, it pushes through the reed valve 16 at the discharge port 13 and is discharged from the discharge port 15 at the center of the cover 21 of the housing 2 to the outside.
- the force in the radial direction is supported by the bearing 8
- the force in the thrust direction is supported by the thrust bearings 10 , 11 , so the first and second motor rotors 4 , 5 and the first and second scroll rotors 61 , 71 operate without hinderance to rotation and execute the above mentioned process of compressing the working fluid.
- the scroll type rotary machine 1 performs a rotation operation in a state where the scroll vane parts 61 c , 71 c are mutually 180 degree out of phase, so a dynamic balance in the rotation operation can be achieved and vibration can be suppressed.
- a high pressure cavity 71 d for forming a high pressure atmosphere is defined between the boss part 71 b , which is rotatably supporting the second scroll rotor 71 at the bottom 22 of the housing 2 , and the bottom 22 .
- the high pressure cavity 71 d is connected through the passage 71 e to the center working chamber of the plurality of working chambers 12 formed between the scroll vane parts 61 c , 71 d by the highly pressurized working fluid. Due to this, highly pressurized working fluid flows into the high pressure cavity 71 d , and a first pressure Fb (in the left direction at FIG. 4 ) acts on the end plate part 71 a.
- a second pressure F 12 (in the right direction at FIG. 4 ), which is the total pressure from the working fluid, acts on all the working chambers 12 formed between the spiral shaped scroll vanes 61 c , 71 c of the first and second scroll rotor 61 , 71 . Therefore, if first pressure Fb>second pressure F 12 is satisfied, even if the thrust bearings 10 ′, 11 ′ between the second motor rotor 5 and bottom 22 of the housing 2 are omitted, the first and second motor rotors 4 , 5 and first and second scroll rotors 61 , 71 rotate without hinderance to rotation.
- the thrust bearings 10 ′, 11 ′ between the second motor rotor 5 and bottom 22 of the housing 2 can be made omittable and the structure can be simplified significantly, allowing costs to be cut.
- FIG. 5 is a cross-sectional explanatory view schematically showing a rolling piston type rotary machine 100 as a third embodiment.
- this rolling piston type rotary machine 100 component substantially the same as the components in the above-mentioned scroll type rotary machine 1 are explained assigned the same reference numerals.
- the housing 2 has an opening sealed by a cover 21 .
- a motor stator 3 having inside surfaces including a step surface designed to enclose the housing interior cavity by the inside surface.
- a shaft 101 is inserted in the inside cavity of the motor stator 3 through the cover 21 of the housing 2 to the bottom 22 and is supported by the housing 2 .
- first and second rotors 6 operating at mutually different phases are attached.
- the first rotational unit 6 is provided with a first rotor 104 a arranged between the middle plate 102 and first side plate 103 a through the shaft 101 and with a first cylinder 105 a arranged eccentric to the first rotor 104 a .
- a motor rotor 4 rotating with the first cylinder 105 a .
- a permanent magnet 41 is set.
- a first side plate 103 a is rotatably supported by a bearing 106 at a holding part 21 a protruding out from the cover 21 of the housing 2 eccentric to the axial center of the shaft 101 .
- the first side plate 103 a and first rotor 104 a are rotatably coupled by a driving pin 107 embedded in the first side plate 103 a through a depression portion (groove) 108 formed at the first rotor 104 a side.
- a first vane 111 a protrudes out by a first spring member 110 a from a first cylinder 105 a toward the first rotor 104 a .
- the first vane 111 a abuts against the first rotor 104 a (refer to FIG. 6 ).
- the second rotational unit 7 is provided with a second rotor 104 b arranged between the middle plate 102 and second side plate 103 b through the shaft 101 and with a second cylinder 105 b arranged eccentric to the second rotor 104 a .
- a motor rotor 5 rotating with the second cylinder 105 b .
- a permanent magnet 51 is set.
- the second side plate 103 b is rotatably supported by a bearing 106 ′ at a holding part 22 a protruding out from the bottom 22 of the housing 2 eccentric to the axial center of the shaft 101 .
- the second side plate 103 b and second rotor 104 b are coupled by a driving pin 107 ′ embedded in the second side plate 103 b through a spot facing portion 108 ′ formed at the second rotor 104 b side.
- a second vane 111 b protrudes out by a second spring member 110 b from the second cylinder 105 b toward the second rotor 104 b .
- the second vane 111 b abuts against the second rotor 104 b.
- the shaft 101 is inserted toward the bottom 22 through the housing 2 by which it is supported.
- the center of the cover 21 of the housing 2 has fit in it a suction pipe 112 having a suction port 14 for introducing low pressure working fluid into the housing 2 .
- the suction pipe 112 is connected with an introducing cavity 113 formed along the axial center of the shaft 101 .
- the introducing cavity 113 of the shaft 101 is formed so as to reach, through the suction passages 114 a , 114 b running through the shaft 101 in the radial direction and through the suction passages 115 a , 115 b formed at the first and second rotors 104 a , 104 b , the crescent shaped first and second working chambers 109 a , 109 b formed between the first and second rotors 104 a , 104 b and first and second cylinders 105 a , 105 b .
- the crescent shaped first and second working chambers 109 a , 109 b formed between the first and second rotors 104 a , 104 b and first and second cylinders 105 a , 105 b are formed so as to reach, through the high pressure passages 116 a , 116 b running through the first and second cylinder 105 a , 105 b and through the high pressure passages 117 a , 117 b running through the first and second side plates 103 a , 103 b , the discharge chamber 118 inside the housing 2 .
- reed valves 119 are provided shutting and opening the passages leading to the discharge chamber 118 .
- the reed valves 119 open and close under bias from the plate springs 119 s .
- the discharge chamber 118 inside the housing 2 discharges high pressure fluid through the discharge port 15 provided at the bottom 22 of the housing 2 .
- the motor stator 3 If the motor stator 3 is energized, the motor stator 3 is magnetized, and the first motor rotor 4 where the permanent magnet 41 is set and first side plate 103 a and first cylinder 105 a rotate.
- the first side plate 103 a and first rotor 104 a are coupled through the driving pin 107 and depression portion 108 , so the first rotor 104 a rotates about the central axis X 1 of the shaft 101 .
- the first motor rotor 4 and the first side plate 103 a and first cylinder 105 a rotate about the center axis X 2 , different from the central axis X 1 of the shaft 101 , so the first cylinder 105 a rotates around the first rotor 104 a.
- first cylinder 105 a rotates, at the first working chamber 109 a between the first rotor 104 a and first cylinder 105 a , one of the volumes that are defined by the first vane 111 a protruding out through the first spring member 110 a is increased. Due to this, the working fluid is sucked in through the suction passage 114 a of the shaft 101 and the suction passage 115 a of the first rotor 104 a into the first working chamber 109 a.
- the other volume defined by the first vane 111 a is reduced, whereby the working fluid is made a high pressure. Therefore, the working fluid travels from the first working chamber 109 a through the high pressure passage 116 a of the first cylinder 105 a and high pressure passage 117 a of the first side plate 103 a , pushes through the reed valve 119 , and reaches the discharge chamber 118 inside the housing 2 .
- the working fluid can be discharged as high pressure fluid through the discharge port 15 provided at the bottom 22 of the housing 2 .
- the second rotational unit 7 is arranged at the interior of the motor stator 3 in the cavity inside the housing 2 out of phase (by 180 degrees) with the first rotational unit 6 , so when rotating, a dynamic balance of the rotational elements can be achieved and vibration can be suppressed.
- Such a rotary machine 100 is configured from one motor stator 3 and first and second rotational units 6 , 7 provided adjoining each other 180 degrees out of phase and eccentric to the shaft 101 , so the structure can be made a smaller size and be given a lighter weight, and further lower cost can be realized.
- the present invention can be worked as a swing type rotary machine 200 shown in FIG. 8 .
- the housing 2 has an opening that is sealed by a cover 21 .
- a motor stator 3 having inside surfaces including a step surface designed to enclose the housing interior cavity by the inside surface.
- a shaft 101 is inserted in the inside cavity of the motor stator 3 through the cover 21 of the housing 2 to the bottom 22 and is supported by the housing 2 .
- first and second rotational units 6 , 7 are provided at the inside cavity of the motor stator 3 .
- first and second rotational units 6 , 7 arranged adjoiningly and eccentrically 180 degrees out of phase from each other. The space therebetween is divided by a middle plate 102 .
- the first rotational unit 6 is provided with a first rotor 104 a arranged between the middle plate 102 and first side plate 103 a through the shaft 101 and with a first cylinder 105 a arranged eccentric to the first rotor 104 a .
- a motor rotor 4 rotating with the first cylinder 105 a .
- a permanent magnet 41 is set.
- a driving pin 201 (hereinafter, referred to as a “blade 201 ”) protruding out from the first rotor 104 a is swingingly fit to the first cylinder 105 a and swingingly couples the first rotor 104 a to the first cylinder 105 a.
- the first side plate 103 a is rotatably supported by a bearing 106 on a holding part 21 a (eccentric to the shaft 101 ) protruding out from the cover 21 of the housing 2 .
- a crescent shaped first working chamber 109 a is formed between the first rotor 104 a and first cylinder 105 a .
- the first working chamber 109 a is defined by the blade 201 protruding out from the first rotor 104 a (refer to FIG. 9 ).
- the second rotational unit 7 is provided with a second rotor 104 b arranged between the middle plate 102 and second side plate 103 b through the shaft 101 and with a second cylinder 105 b arranged eccentric to the second rotor 104 b .
- the motor rotor 5 rotating with the second cylinder 105 b.
- the blade 201 protruding out from the second rotor 104 b is swingingly fit from the second rotor 104 b into the second cylinder 105 b and swingingly couples the second rotor 104 b to the second cylinder 105 b.
- the second side plate 103 b is rotatably supported by the bearing 106 ′ at the holding part 22 a (eccentric to the shaft 101 ) protruding out from the bottom 22 of the housing 2 .
- the shaft 101 is inserted toward the bottom 22 through the housing 2 by which it is supported.
- a suction pipe 112 having a suction port 14 for introducing low pressure working fluid into the housing 2 .
- the suction pipe 112 is connected with an introducing cavity 113 formed along the axial center of the shaft 101 .
- the introducing cavity 113 of the shaft 101 is formed so as to reach, through the suction passages 114 a , 114 b running through the shaft 101 in the radial direction and through the suction passages 115 a , 115 b formed at the first and second rotor 104 a , 104 b , the crescent shaped first and second working chambers 119 a , 119 b formed between the first and second rotors 104 a , 104 b and the first and second cylinders 105 a , 105 b .
- the crescent shaped first and second working chambers 109 a , 109 b formed between the first and second rotors 104 a , 104 b and the first and second cylinders 105 a , 105 b are formed so as to reach, through the high pressure passages 116 a , 116 b running through the first and second cylinders 105 a , 105 b and through the high pressure passages 116 a , 117 b running through the first and second side plates 103 a , 103 b , the discharge chamber 118 inside the housing 2 .
- reed valves 119 shutting and opening the passages leading to the discharge chamber 118 .
- the reed valves 119 open and close under bias from spring plates 119 s .
- the discharge chamber 118 inside the housing 2 discharges high pressure fluid through the discharge port 15 provided at the bottom 22 of the housing 2 .
- the motor stator 3 If the motor stator 3 is energized, the motor stator 3 is magnetized, and the first motor rotor 4 where the permanent magnet 41 is set and the first side plate 103 a and first cylinder 105 a rotate.
- the first rotor 104 a is swingingly coupled to the first cylinder 105 a through the blade 201 . Therefore, the first rotor 104 a rotates together about the center axis X 1 of the shaft 101 .
- the first motor rotor 4 and the first side plate 103 a and first cylinder 105 a rotate about the center axis X 2 , different from the center axis X 1 of the shaft 101 .
- the first rotor 104 a rotates together with the first cylinder 105 a while swinging with respect the first cylinder 105 a through the blade 201 , so the first cylinder 105 a rotates around the first rotor 104 a.
- the other volume defined by the blade 201 is reduced, causing a high pressure in the working fluid, which travels from the working chamber 109 a through the high pressure passage 116 a of the first cylinder 105 a and the high pressure passage 117 a of the first side plate 103 a , pushes through the reed valve 119 , and reaches the discharge chamber 118 inside the housing 2 .
- the working fluid can be discharged as high pressure fluid through the discharge port 115 provided at the bottom 22 of the housing 2 .
- the second rotational unit 7 is arranged at the interior of the motor stator 3 in the cavity inside the housing out of phase (by 180 degrees) with the first rotational unit 6 , so when in rotation, dynamic balance of the rotational elements can be achieved and vibration can be suppressed.
- Such a rotary machine 200 is configured from one motor stator 3 and first and second rotational units 6 , 7 installed adjoiningly each other 180 degrees out of phase and eccentric to the shaft 101 , so the structure can be made a smaller size and be given a lighter weight, and further lower cost can be realized.
- the rotary machine of the present invention was explained as a compressor in the embodiments, however, the rotary machine of the present invention can also be made to operate as a generator converting the energy of high pressure working fluid into electric energy for extraction.
- the scroll type rotary machine 1 of the first embodiment can also be operated, with the reed valves 16 and spring members 16 s removed, with the discharge port 15 acting as an inflow port for high pressure working fluid, and with the suction port 14 acting as an outlet for low pressure working fluid.
- the high pressure working fluid introduced from the discharge port 15 induces rotation of the first and second scroll rotors 61 , 71 .
- the working fluid is made a low pressure working fluid while expanding from the center working chamber 12 to the outer working chambers 12 and is discharged from the suction port 14 .
- the first and second motor rotors 4 , 5 rotate by the rotation of the first and second scroll rotors 61 , 71 , generating in the coil 3 c at the motor stator 3 an induced current which can be extracted as electricity from the hermetic terminal 17 at the bottom 22 of the housing 2 .
Abstract
A rotary machine sucking in working fluid through a suction port into a housing and discharging it through the discharge port, provided with a motor stator provided at an inside circumferential surface of the housing and having inside surfaces which include a step surface designed to enclose a housing interior cavity by the inside surfaces; first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other.
Description
- The present invention relates to a rotary machine, more particularly a rotary machine compressing a working fluid and able to rotate by expansion of the fluid. Further, it relates to a rotary machine compressing and pumping a non-compressible fluid and able to rotate by the fluid wherein the volume changes due to an orbiting part as seen in scroll and rolling piston types etc.
- Rotary fluid machines used in vapor compression type refrigeration air-conditioning systems and the like since the past, have been noteworthy for their relatively high efficiency, low vibration, and low noise in comparison to other types of compressors, for example, reciprocating compressors and screw compressors. This is because a scroll compressor, in principle, performs compression operations simultaneously in multiple chambers.
- Further, in order to effectively achieve a feeling of heating and a feeling of cooling in air-conditioning systems etc., there has been desired to be able to operate the compressor while maintaining a high efficiency over a wide range from slow to high speeds.
- For example, Japanese Unexamined Patent Publication No. 5-332262 discloses a compressor designed to engage two parts having scroll laps and driving both with different motors. International Patent Publication WO 2006/067844 discloses a compressor engaging a part having a scroll lap on both surfaces with two fixed scrolls and driving the former with a motor.
- However, the compressor disclosed in Japanese Unexamined Patent Publication No. 5-332262 uses two motors, so its mass is large, a larger size becomes unavoidable, and production costs rise also. Further, driving the two motors used simultaneously is difficult.
- On the other hand, in the compressor disclosed in International Patent Publication WO 2006/067844 (W02006/067844-A1), there were the problems that machining of a double surface scroll is difficult and, further, assembly of the component parts is also difficult. Further, this compressor has a structure in which a shaft penetrates through the center of the scroll lap, so the outside circumference and the mass increase and the size becomes large.
- The present invention was proposed to solve the above problems and has as its object to provide a rotary machine aiming at smaller size and lighter weight.
- As a means for solving the problem, in the aspect of the invention in
claim 1, there is provided a rotary machine sucking in working fluid through a suction port into its housing to render it a high pressure and discharging it through a discharge port, provided with a motor stator provided at an inside circumferential surface of the housing and having inside surfaces which include a step surface designed to enclose a housing interior cavity by the inside surfaces; first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other; the first and second rotational units further provided with working chambers, the volumes of the working chambers formed by the first and second rotational units made variable by rotation together with the first and second motor rotors, which render the working fluid sucked in through the suction port a high pressure by reduction of the volumes; and high pressure working fluid being discharged from the working chambers through the discharge port. - According to this, a motor stator having inside surfaces including a step surface designed to enclose the housing interior cavity is provided at the housing inside circumferential surface so as to drive the first and second rotational parts together with the first and second motor rotors at the inside of this inside surface, so a smaller size, lighter weight, and further cost reduction can be realized.
- In the aspect of the invention in
claim 2, there is provided a rotary machine sucking in working fluid through a suction port into its housing and able to rotate by expansion of the fluid, provided with a motor stator provided at an inside circumferential surface of the housing and having inside surfaces which include a step surface designed to enclose a housing interior cavity by the inside surfaces; first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other; the first and second rotational units further provided with working chambers, the volumes of the working chambers formed by the first and second rotational units made variable by rotation of the first and second rotational units, which expand the working fluid introduced into the housing; and expansion of the working fluid by the working chambers causing the first and second rotational units and the first and second motor rotors to rotate so as to extract electricity. - According to this, working fluid introduced into the housing is expanded by the working chambers so as to make the first and second motor rotors rotate together with the first and second rotational units and take out electricity, so a smaller size, lighter weight, and further lower costs can be realized.
- In the aspect of the invention in
claim 3, there is provided the aspect of the invention as set forth inclaim 1, wherein the first and second rotational units are first and second rotational units in a scroll type rotary machine, the first and second rotational units provided with a first scroll rotor and a second scroll rotor eccentrically engaging with the first scroll rotor; and the first and second scroll rotors are rotatably supported at the housing by respective bearings adjoining and eccentric to each other, and the first and second scroll rotors are respectively supported through the first and second motor rotors by thrust bearings at the housing in the thrust direction. - According to this, first and second second scroll rotors (61, 71) are driven while engaging with each other inside a motor stator having an inner diameter able to receive the first and second scroll rotors, so a smaller size, lighter weight, and further lower costs can be realized.
- In the aspect of the invention as set forth in
claim 4, there is provided the aspect of the invention as set forth inclaim 1, wherein the first and second rotational unit are first and second rotational units in a scroll type rotary machine, the first and second rotational units provided with a first scroll rotor having a substantially circular end plate part and spiral shaped scroll vane part and a second scroll part having a substantially circular end plate part and spiral shaped scroll vane part; the scroll vane parts of the first scroll rotor and second scroll rotor engage eccentrically with each other to thereby form a plurality of working chambers taking in working fluid and rendering it high pressure between the scroll vane parts; and a high pressure cavity is defined inside of the inside wall at the side opposite to the discharge port in the housing so that a first pressure is applied to either of the end plate parts of the first or second scroll rotor, a second pressure applied to the plurality of the working chambers as a whole being set so as to become smaller than the first pressure so as to eliminate the bearing for receiving the force in the thrust direction for the inside wall of the housing at the side defining the high pressure cavity. - According to this, the bearing in the thrust direction for the inside wall of the housing at the side where the high pressure cavity is defined can be omitted, so the structure can be simplified significantly, contributing to smaller size and lighter weight.
- In an aspect of the invention in
claim 5, there is provided a rotary piston type rotary machine sucking in working fluid through a suction port into its housing to render it a high pressure and discharging it through a discharge port, provided with a motor stator provided at an inside circumferential surface of the housing and having inside surfaces which include a step surface designed to enclose a housing interior cavity by the inside surfaces; first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other; the first and second rotational units provided with first and second rotors respectively arranged between a first side plate and middle plate or between the middle plate and a second side plate through a shaft, first and second cylinders arranged eccentric to the first and second rotors respectively, first and second working chambers respectively formed between the first rotor and first cylinder or between the second rotor and second cylinder, and first and second vanes protruding out from the first and second cylinders toward the first and second rotors in the first and second working chambers so as to abut against the first and second rotors by first and second spring members. - According to this, there can be provided a rolling piston type rotary machine enabling a simplified structure, smaller size, and lighter weight.
- In the aspect of the invention as set forth in
claim 6, there is provided a swing type rotary machine sucking in working fluid through a suction port into its housing to render it a high pressure and discharging it through a discharge port, provided with a motor stator provided at an inside circumferential surface of the housing and having inside surfaces which include a step surface designed to enclose a housing interior cavity by the inside surfaces; first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other; the first and second rotational units provided with first and second rotors respectively arranged between a first side plate and middle plate or between the middle plate and a second side plate through a shaft, first and second cylinders arranged eccentric to the first and second rotors respectively, first and second working chambers respectively formed between the first rotor and first cylinder or between the second rotor and second cylinder, and first and second driving pins provided protruding out from the first and second rotors and coupling the first and second rotors to the first and second cylinders swingingly. - According to this, there can be provided a rolling piston type rotary machine enabling a simplified structure, smaller size, and lighter weight.
- In the aspect of the invention as set forth in
claim 7, there is provided the invention as set forth inclaim 1, wherein the first and second rotational unit are 180 degrees out of phase with each other and are arranged inside of the motor stator in the cavity inside the housing. - According to this, when the first and second rotational units rotate, a dynamic balance of the rotating elements can be achieved, and vibration can be suppressed.
-
FIG. 1 is a cross-sectional explanatory view of a scroll type rotary machine of an embodiment of the present invention. -
FIG. 2 is a cross-sectional explanatory view showing another embodiment of a scroll rotor in the scroll type rotary machine shown inFIG. 1 . -
FIG. 3A is a cross-sectional explanatory view of the main parts of the rotary machine shown inFIG. 1 when cut along a line A-A. Along withFIGS. 3B to 3D , it explains the process of the scroll vanes of the first and second scroll rotors compressing a working fluid. -
FIG. 3B is a cross-sectional explanatory view of the main parts of the rotary machine shown inFIG. 1 when cut along a line A-A. -
FIG. 3C is a cross-sectional explanatory view of the main parts of the rotary machine shown inFIG. 1 when cut along a line A-A. -
FIG. 3D is a cross-sectional explanatory view of the main parts of the rotary machine shown inFIG. 1 when cut along a line A-A. -
FIG. 4 is a cross-sectional explanatory view of a scroll type rotary machine of another embodiment of the present invention. -
FIG. 5 is a cross-sectional explanatory view of a rolling piston type rotary machine of an embodiment of the present invention. -
FIG. 6 is a cross-sectional explanatory view of the rolling piston type rotary machine shown inFIG. 5 when cut along a line B-B. -
FIG. 7A is a cross-sectional explanatory view of the main parts of the rolling piston type rotary machine shown inFIG. 5 explaining the process of it compressing the working fluid. -
FIG. 7B is a cross-sectional explanatory view of the main parts of the rolling piston type rotary machine shown inFIG. 5 explaining the process of it compressing the working fluid. -
FIG. 7C is a cross-sectional explanatory view of the main parts of the rolling piston type rotary machine shown inFIG. 5 explaining the process of it compressing the working fluid. -
FIG. 8 is a cross-sectional explanatory view of a swing type rotary machine of an embodiment of the present invention. -
FIG. 9 is a cross-sectional explanatory view of the swing type rotary machine shown inFIG. 8 when cut along a line C-C. -
FIG. 10A is a cross-sectional explanatory view of the main parts of the swing type rotary machine shown inFIG. 8 explaining the process of it compressing the working fluid. -
FIG. 10B is a cross-sectional explanatory view of the main parts of the swing type rotary machine shown inFIG. 8 explaining the process of it compressing the working fluid. -
FIG. 10C is a cross-sectional explanatory view of the main parts of the swing type rotary machine shown inFIG. 8 explaining the process of it compressing the working fluid. - Below, embodiments of the rotary machine of the present invention will be explained.
-
FIG. 1 is a cross-sectional view showing the overall configuration of a compressor when using a hermetic scroll type rotary machine as a compressor for an air-conditioning machine. This scrolltype rotary machine 1 is a rotary machine that sucks in working fluid through asuction port 14 into itshousing 2 to render it a high pressurize and discharges it through adischarge port 15. - This
rotary machine 1 is provided with amotor stator 3 provided at an inside circumferential surface of thehousing 2 and having inside surfaces, which include a step surface S, designed to enclose a housing interior cavity by its inside surfaces, first andsecond motor rotors motor stator 3 separated at the step surface S, and first and secondrotational units rotational units second motor rotors rotational units bearings housing 2 adjoiningly and eccentrically to each other. - Further, the first and second
rotational units chambers 12 having volumes changed by making the first and secondrotational units second motor rotors suction port 14 to the housing 2 a high pressure by reducing the volumes. - At the inside surfaces of the
motor stator 3, the inside surfaces facing the first and secondrotational units rotational units - The first and second
rotational units first scroll rotor 61 and asecond scroll rotor 71 eccentrically engaging with thefirst scroll rotor 61. Thefirst scroll rotor 61 has a substantially circularend plate part 61 a and a spiral shapedscroll vane part 61 c. Thesecond scroll rotor 71 has a substantially circularend plate part 71 a and a substantially same shaped spiral shapedscroll vane part 71 c engaging with thescroll vane part 61 c of thefirst scroll rotor 61. By eccentrically engaging thescroll vane parts chambers 12 taking in and compressing working fluid are formed between the spiral shapedscroll vane parts - The first and
second scroll rotors housing 2 bybearings thrust bearings second motor rotors - At one surface of the
end plate part 61 a of thefirst scroll rotor 61, there is formed ascroll vane part 61 c. At the other surface of theend plate part 61 a, there is provided a substantiallycylindrical boss part 61 b protruding toward acover 21 of thehousing 2. A holdingpart 21 a is protrudes out at thecover 21 of thehousing 2. Thefirst scroll rotor 61 has thecylindrical boss part 61 b inserted into the holdingpart 21 a of thehousing 2 whereby it is rotatably supported by thebearing 8. - At one surface of the
end plate part 71 a of thesecond scroll rotor 71, there is formed ascroll vane part 71 c. At the other surface of theend plate part 71 a, there is provided a protrudingboss part 71 b. Thesecond scroll rotor 71 has theboss part 71 b inserted into the holdingpart 22 a protruding out from the bottom 22 side of thehousing 2, whereby it is rotatably supported by thebearing 8′. - The
first motor rotor 4 is fixed to theend plate part 61 a where of thefirst scroll rotor 61 at the side where theboss part 61 b is formed. Apermanent magnet 41 is set at thefirst motor rotor 4. Thefirst motor rotor 4 is supported in the thrust direction by thecover 21 of thehousing 2 and thethrust bearings - Further, the
second motor rotor 5 is fixed to theend plate part 71 a of thesecond scroll rotor 71 at the side whereboss part 71 b is formed. Apermanent magnet 51 is set at thesecond motor rotor 5. Further, thesecond motor rotor 5 is supported by the bottom 22 of thehousing 2 and thethrust bearings 10′, 11′ without hinderance to rotation. - The first and
second scroll rotors scroll vane parts vane parts second scroll rotors boss part 61 b at thefirst scroll rotor 61, there is formed adischarge port 13 for discharging the compressed working fluid from the high pressure working chamber. - At the
housing 2 of the scroll typerotary machine 1, asuction port 14 is formed at the bottom 22 side for taking in working fluid to thehousing 2. At the center of thecover 21 of thehousing 2, adischarge port 15 is formed. Thesuction port 14 is connected to the workingchambers 12 formed between the spiral shapedscroll vane parts second scroll rotors - The
discharge port 15 at the center of thecover 21 of thehousing 2 is connected with thedischarge port 13 of theboss part 61 b at thefirst scroll rotor 61. - At the passage from the
discharge port 13 to thedischarge port 15,reed valve 16 is interposed biased so as to normally block the passage with aspring member 16 s. - If the pressure of working fluid at the high pressure working chamber existing at the center region of the first and
second scroll rotors reed valve 16. Therefore, the passage from thedischarge port 13 to thedischarge port 15 is opened up, and high pressure working fluid flows out from thedischarge port 15. - At the bottom 22 of the
housing 2, there is interposed ahermetic terminal 17. Electricity is fed through the hermetic terminal 17 from an external controller (not shown) to acoil 3 c of themotor stator 3. - The
reed valve 16 can also be replaced with apoppet valve 18 such as shown inFIG. 2 . Thepoppet valve 18 openably blocks the passage from thedischarge port 13 to thedischarge port 15 and is configured from a valve element 18 a, spring member 18 b, and spring holder 18 c. - Next, the action of the scroll type
rotary machine 1 of the present invention will be explained. - If electricity is fed to the
motor stator 3 inside thehousing 2 through the hermetic terminal 17 from the external controller, themotor stator 3 is magnetized, whereby the first andsecond motor rotors permanent magnets second motor rotors second scroll rotors second scroll rotors bearings housing 2, so thescroll vane parts bearings - When the scroll type
rotary machine 1 is in operation, the first andsecond scroll rotors scroll vane parts suction port 14 at the bottom 22 of thehousing 2 spreads to the workingchambers 12 between the spiral shapedvane parts second scroll rotors reed valve 16, passes through thedischarge port 13, and is discharged outside from thedischarge port 15 at the center of thecover 21 of thehousing 2. - In the above way, the scroll type
rotary machine 1 is configured from the first and second motor rotors integral with the first andsecond scroll rotors motor stator 3 having first and second cylindrical cavities 31, 32 eccentric to each other, so smaller size, lighter weight, and further lower costs can be realized. - The process of compressing the working fluid will be explained with reference to
FIG. 3A toFIG. 3D .FIG. 3A toFIG. 3D show an engaged state of thescroll vane parts second scroll rotors FIG. 1 when cut along the line A-A. - When the
scroll vane parts scroll vane part 61 c shown atFIG. 3A (hereinafter, referred to as “phase”) is defined as “0” degree. At this time, thescroll vane part 71 c of thesecond scroll rotor 71 is 180 degrees out of phase from thescroll vane part 61 c of thefirst scroll rotor 61. - Below, in
FIG. 3B , the phase of thevane part 61 c of thefirst scroll rotor 61 is shown to be 90 degrees, inFIG. 3C , the phase of thevane part 61 c of thefirst scroll rotor 61 is shown to be 180 degrees, and in FIG. 3D, the phase of thevane part 61 c of thefirst scroll rotor 61 is shown to be 270 degrees. - In the engaged state of the
scroll vane parts FIG. 3A , the working fluid is sealed by the working chambers 12α1, 12β1. From this state, the first andsecond scroll rotors second motor rotors chamber 12 formed between thescroll vane parts reed valve 16 is in a closed state). Further, the workingchamber 12 becomes narrower in the order of the working chamber 12δ→working chamber 12ε. If becoming higher than a predetermined pressure, the fluid pushes through thereed valve 16 at thedischarge port 13 and is discharged from thedischarge port 15 at the center of thecover 21 of thehousing 2 to the outside. - On the other hand, the working chamber 1231 also similarly becomes narrower in the order of 12β1→12β2→12β3→12β4→12β5, whereby the working fluid is compressed and rendered a high pressure. If the working
chamber 12 formed between thescroll vane parts discharge port 13. Further, the workingchamber 12 becomes narrower in the order of working chamber 12δ→working chamber 12ε, where if the working fluid has a pressure higher than a predetermined pressure, it pushes through thereed valve 16 at thedischarge port 13 and is discharged from thedischarge port 15 at the center of thecover 21 of thehousing 2 to the outside. - Regarding the forces the working fluid of the working
chambers 12 applies to the first andsecond scroll rotors bearing 8, and the force in the thrust direction is supported by thethrust bearings second motor rotors second scroll rotors - The scroll type
rotary machine 1 performs a rotation operation in a state where thescroll vane parts - A second embodiment of the scroll type
rotary machine 1 of the present invention will be explained below. - In the scroll type
rotary machine 1 shown inFIG. 1 , among the forces applied to the first andsecond scroll rotor bearings thrust bearings rotary machine 1 shown inFIG. 4 , thethrust bearings 10′, 11′ between thesecond motor rotor 5 rotating integrally with thesecond scroll rotor 71 and the bottom 22 of thehousing 2 are omitted. - In the scroll type
rotary machine 1 shown inFIG. 4 , ahigh pressure cavity 71 d for forming a high pressure atmosphere is defined between theboss part 71 b, which is rotatably supporting thesecond scroll rotor 71 at the bottom 22 of thehousing 2, and the bottom 22. Thehigh pressure cavity 71 d is connected through thepassage 71 e to the center working chamber of the plurality of workingchambers 12 formed between thescroll vane parts high pressure cavity 71 d, and a first pressure Fb (in the left direction atFIG. 4 ) acts on theend plate part 71 a. - On the other hand, opposing the pressure Fb acting on the
end plate part 71 a, a second pressure F12 (in the right direction atFIG. 4 ), which is the total pressure from the working fluid, acts on all the workingchambers 12 formed between the spiral shapedscroll vanes second scroll rotor thrust bearings 10′, 11′ between thesecond motor rotor 5 and bottom 22 of thehousing 2 are omitted, the first andsecond motor rotors second scroll rotors - By setting the first pressure Fb so as to exceed the second pressure F12, the
thrust bearings 10′, 11′ between thesecond motor rotor 5 and bottom 22 of thehousing 2 can be made omittable and the structure can be simplified significantly, allowing costs to be cut. - In the above, an explanation was made of an embodiment applied to a scroll type rotary machine as an air-conditioner compressor. The present invention can be worked as a rolling piston type rotary machine.
-
FIG. 5 is a cross-sectional explanatory view schematically showing a rolling pistontype rotary machine 100 as a third embodiment. In this rolling pistontype rotary machine 100, component substantially the same as the components in the above-mentioned scroll typerotary machine 1 are explained assigned the same reference numerals. - In this
rotary machine 100 as well, thehousing 2 has an opening sealed by acover 21. At the inside wall of thehousing 2, there is arranged amotor stator 3 having inside surfaces including a step surface designed to enclose the housing interior cavity by the inside surface. - A
shaft 101 is inserted in the inside cavity of themotor stator 3 through thecover 21 of thehousing 2 to the bottom 22 and is supported by thehousing 2. At theshaft 101, first andsecond rotors 6 operating at mutually different phases are attached. - The first
rotational unit 6 is provided with afirst rotor 104 a arranged between themiddle plate 102 andfirst side plate 103 a through theshaft 101 and with afirst cylinder 105 a arranged eccentric to thefirst rotor 104 a. At thefirst cylinder 105 a, there is attached amotor rotor 4 rotating with thefirst cylinder 105 a. At themotor rotor 4, apermanent magnet 41 is set. - A
first side plate 103 a is rotatably supported by abearing 106 at a holdingpart 21 a protruding out from thecover 21 of thehousing 2 eccentric to the axial center of theshaft 101. Thefirst side plate 103 a andfirst rotor 104 a are rotatably coupled by a drivingpin 107 embedded in thefirst side plate 103 a through a depression portion (groove) 108 formed at thefirst rotor 104 a side. - At a crescent shaped first working
chamber 109 a formed between thefirst rotor 104 a andfirst cylinder 105 a, afirst vane 111 a protrudes out by afirst spring member 110 a from afirst cylinder 105 a toward thefirst rotor 104 a. Thefirst vane 111 a abuts against thefirst rotor 104 a (refer toFIG. 6 ). - On the other hand, the second
rotational unit 7 is provided with asecond rotor 104 b arranged between themiddle plate 102 andsecond side plate 103 b through theshaft 101 and with asecond cylinder 105 b arranged eccentric to thesecond rotor 104 a. At thesecond cylinder 105 b, there is attached amotor rotor 5 rotating with thesecond cylinder 105 b. At themotor rotor 5, apermanent magnet 51 is set. - The
second side plate 103 b is rotatably supported by a bearing 106′ at a holdingpart 22 a protruding out from the bottom 22 of thehousing 2 eccentric to the axial center of theshaft 101. Thesecond side plate 103 b andsecond rotor 104 b are coupled by a drivingpin 107′ embedded in thesecond side plate 103 b through aspot facing portion 108′ formed at thesecond rotor 104 b side. - At the crescent shaped second working
chamber 109 b formed between thesecond rotor 104 b andsecond cylinder 105 b, asecond vane 111 b protrudes out by asecond spring member 110 b from thesecond cylinder 105 b toward thesecond rotor 104 b. Thesecond vane 111 b abuts against thesecond rotor 104 b. - In the above
rotary machine 100, theshaft 101 is inserted toward the bottom 22 through thehousing 2 by which it is supported. To suck in, compress, and discharge the low pressure working fluid, the center of thecover 21 of thehousing 2 has fit in it asuction pipe 112 having asuction port 14 for introducing low pressure working fluid into thehousing 2. Further, thesuction pipe 112 is connected with an introducingcavity 113 formed along the axial center of theshaft 101. - Next, the introducing
cavity 113 of theshaft 101 is formed so as to reach, through thesuction passages shaft 101 in the radial direction and through thesuction passages second rotors chambers second rotors second cylinders rotational units - The crescent shaped first and second working
chambers second rotors second cylinders high pressure passages second cylinder high pressure passages second side plates discharge chamber 118 inside thehousing 2. These form a high pressure discharge passage with respect to the first and secondrotational units second side plates reed valves 119 are provided shutting and opening the passages leading to thedischarge chamber 118. Thereed valves 119 open and close under bias from the plate springs 119 s. Thedischarge chamber 118 inside thehousing 2 discharges high pressure fluid through thedischarge port 15 provided at the bottom 22 of thehousing 2. - Next, the operations of such a
rotary machine 100 will be schematically explained based onFIG. 6 andFIG. 7A toFIG. 7C . The operations of only the firstrotational unit 6 will be explained. Operations of the secondrotational unit 7 are performed similarly at a different phase (180 degrees), so explanations thereof are omitted. - If the
motor stator 3 is energized, themotor stator 3 is magnetized, and thefirst motor rotor 4 where thepermanent magnet 41 is set andfirst side plate 103 a andfirst cylinder 105 a rotate. Thefirst side plate 103 a andfirst rotor 104 a are coupled through the drivingpin 107 anddepression portion 108, so thefirst rotor 104 a rotates about the central axis X1 of theshaft 101. Thefirst motor rotor 4 and thefirst side plate 103 a andfirst cylinder 105 a rotate about the center axis X2, different from the central axis X1 of theshaft 101, so thefirst cylinder 105 a rotates around thefirst rotor 104 a. - If the
first cylinder 105 a rotates, at the first workingchamber 109 a between thefirst rotor 104 a andfirst cylinder 105 a, one of the volumes that are defined by thefirst vane 111 a protruding out through thefirst spring member 110 a is increased. Due to this, the working fluid is sucked in through thesuction passage 114 a of theshaft 101 and thesuction passage 115 a of thefirst rotor 104 a into the first workingchamber 109 a. - On the other hand, the other volume defined by the
first vane 111 a is reduced, whereby the working fluid is made a high pressure. Therefore, the working fluid travels from the first workingchamber 109 a through thehigh pressure passage 116 a of thefirst cylinder 105 a andhigh pressure passage 117 a of thefirst side plate 103 a, pushes through thereed valve 119, and reaches thedischarge chamber 118 inside thehousing 2. The working fluid can be discharged as high pressure fluid through thedischarge port 15 provided at the bottom 22 of thehousing 2. - The second
rotational unit 7 is arranged at the interior of themotor stator 3 in the cavity inside thehousing 2 out of phase (by 180 degrees) with the firstrotational unit 6, so when rotating, a dynamic balance of the rotational elements can be achieved and vibration can be suppressed. - Such a
rotary machine 100 is configured from onemotor stator 3 and first and secondrotational units shaft 101, so the structure can be made a smaller size and be given a lighter weight, and further lower cost can be realized. - The present invention can be worked as a swing type
rotary machine 200 shown inFIG. 8 . - In such a
rotary machine 200, components substantially the same as the components in the above-mentioned scroll typerotary machine 1 and rolling pistontype rotary machine 100 are explained assigned the same reference numerals. - That is, in the
rotary machine 200 as well, thehousing 2 has an opening that is sealed by acover 21. At the inside wall of thehousing 2, there is arranged amotor stator 3 having inside surfaces including a step surface designed to enclose the housing interior cavity by the inside surface. Ashaft 101 is inserted in the inside cavity of themotor stator 3 through thecover 21 of thehousing 2 to the bottom 22 and is supported by thehousing 2. At the inside cavity of themotor stator 3, there are provided first and secondrotational units middle plate 102. - The first
rotational unit 6 is provided with afirst rotor 104 a arranged between themiddle plate 102 andfirst side plate 103 a through theshaft 101 and with afirst cylinder 105 a arranged eccentric to thefirst rotor 104 a. At thefirst cylinder 105 a, there is attached amotor rotor 4 rotating with thefirst cylinder 105 a. At themotor rotor 4, apermanent magnet 41 is set. - A driving pin 201 (hereinafter, referred to as a “
blade 201”) protruding out from thefirst rotor 104 a is swingingly fit to thefirst cylinder 105 a and swingingly couples thefirst rotor 104 a to thefirst cylinder 105 a. - The
first side plate 103 a is rotatably supported by a bearing 106 on a holdingpart 21 a (eccentric to the shaft 101) protruding out from thecover 21 of thehousing 2. Between thefirst rotor 104 a andfirst cylinder 105 a, there is formed a crescent shaped first workingchamber 109 a. The first workingchamber 109 a is defined by theblade 201 protruding out from thefirst rotor 104 a (refer toFIG. 9 ). - On the other hand, the second
rotational unit 7 is provided with asecond rotor 104 b arranged between themiddle plate 102 andsecond side plate 103 b through theshaft 101 and with asecond cylinder 105 b arranged eccentric to thesecond rotor 104 b. At thesecond cylinder 105 b, there is attached themotor rotor 5 rotating with thesecond cylinder 105 b. - The
blade 201 protruding out from thesecond rotor 104 b is swingingly fit from thesecond rotor 104 b into thesecond cylinder 105 b and swingingly couples thesecond rotor 104 b to thesecond cylinder 105 b. - The
second side plate 103 b is rotatably supported by the bearing 106′ at the holdingpart 22 a (eccentric to the shaft 101) protruding out from the bottom 22 of thehousing 2. - In such a
rotary machine 200, theshaft 101 is inserted toward the bottom 22 through thehousing 2 by which it is supported. To suck in, compress, and discharge the low pressure working fluid, there is fit into the center of thecover 21 of thehousing 2, asuction pipe 112 having asuction port 14 for introducing low pressure working fluid into thehousing 2. Further, thesuction pipe 112 is connected with an introducingcavity 113 formed along the axial center of theshaft 101. - Next, the introducing
cavity 113 of theshaft 101 is formed so as to reach, through thesuction passages shaft 101 in the radial direction and through thesuction passages second rotor second rotors second cylinders rotational units - The crescent shaped first and second working
chambers second rotors second cylinders high pressure passages second cylinders high pressure passages second side plates discharge chamber 118 inside thehousing 2. These form high pressure discharge passages with respect to the first and secondrotational units second side plates reed valves 119 shutting and opening the passages leading to thedischarge chamber 118. Thereed valves 119 open and close under bias fromspring plates 119 s. Thedischarge chamber 118 inside thehousing 2 discharges high pressure fluid through thedischarge port 15 provided at the bottom 22 of thehousing 2. - Next, the operations for such a
rotary machine 200 will be schematically explained based onFIG. 9 andFIG. 10A toFIG. 10C . The operations for only the firstrotational unit 6 will be explained. Operations of the secondrotational unit 7 are performed similarly at a different phase (180 degrees), so explanations thereof are omitted. - If the
motor stator 3 is energized, themotor stator 3 is magnetized, and thefirst motor rotor 4 where thepermanent magnet 41 is set and thefirst side plate 103 a andfirst cylinder 105 a rotate. Thefirst rotor 104 a is swingingly coupled to thefirst cylinder 105 a through theblade 201. Therefore, thefirst rotor 104 a rotates together about the center axis X1 of theshaft 101. - The
first motor rotor 4 and thefirst side plate 103 a andfirst cylinder 105 a rotate about the center axis X2, different from the center axis X1 of theshaft 101. Thefirst rotor 104 a rotates together with thefirst cylinder 105 a while swinging with respect thefirst cylinder 105 a through theblade 201, so thefirst cylinder 105 a rotates around thefirst rotor 104 a. - Due to this, at the working
chamber 109 a between thefirst rotor 104 a andfirst cylinder 105 a, one of the volumes that are defined by theblade 201 is increased, whereby the working fluid is sucked in through thesuction passage 114 a of theshaft 101 and thesuction passage 115 a of thefirst rotor 104 a into the workingchamber 109 a. The other volume defined by theblade 201 is reduced, causing a high pressure in the working fluid, which travels from the workingchamber 109 a through thehigh pressure passage 116 a of thefirst cylinder 105 a and thehigh pressure passage 117 a of thefirst side plate 103 a, pushes through thereed valve 119, and reaches thedischarge chamber 118 inside thehousing 2. The working fluid can be discharged as high pressure fluid through thedischarge port 115 provided at the bottom 22 of thehousing 2. - The second
rotational unit 7 is arranged at the interior of themotor stator 3 in the cavity inside the housing out of phase (by 180 degrees) with the firstrotational unit 6, so when in rotation, dynamic balance of the rotational elements can be achieved and vibration can be suppressed. - Such a
rotary machine 200 is configured from onemotor stator 3 and first and secondrotational units shaft 101, so the structure can be made a smaller size and be given a lighter weight, and further lower cost can be realized. - The rotary machine of the present invention was explained as a compressor in the embodiments, however, the rotary machine of the present invention can also be made to operate as a generator converting the energy of high pressure working fluid into electric energy for extraction.
- For example, the scroll type
rotary machine 1 of the first embodiment can also be operated, with thereed valves 16 andspring members 16 s removed, with thedischarge port 15 acting as an inflow port for high pressure working fluid, and with thesuction port 14 acting as an outlet for low pressure working fluid. - In a scroll type
rotary machine 1 in this case, the high pressure working fluid introduced from thedischarge port 15 induces rotation of the first andsecond scroll rotors chambers 12 formed between thescroll vane parts center working chamber 12 to the outer workingchambers 12 and is discharged from thesuction port 14. - At such a time, the first and
second motor rotors second scroll rotors coil 3 c at themotor stator 3 an induced current which can be extracted as electricity from thehermetic terminal 17 at the bottom 22 of thehousing 2.
Claims (7)
1. A rotary machine sucking in working fluid through a suction port into its housing to render it a high pressure and discharging it through a discharge port, provided with
a motor stator provided at an inside circumferential surface of the housing and having inside surfaces, which include a step surface, designed to enclose a housing interior cavity by the inside surfaces;
first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and
first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other;
the first and second rotational units further provided with working chambers, the volumes of the working chambers formed by the first and second rotational units made variable by rotation together with the first and second motor rotors, which render the working fluid sucked in through the suction port a high pressure by reduction of the volumes; and
high pressure working fluid being discharged from the working chambers through the discharge port.
2. A rotary machine sucking in working fluid through a suction port into its housing and able to rotate by expansion of the fluid, provided with
a motor stator provided at an inside circumferential surface of the housing and having inside surfaces which include a step surface designed to enclose a housing interior cavity by the inside surfaces;
first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and
first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other;
the first and second rotational units further provided with working chambers, the volumes of the working chambers formed by the first and second rotational units made variable by rotation of the first and second rotational units, which expand the working fluid introduced into the housing; and
expansion of the working fluid by the working chambers causing the first and second rotational units and the first and second motor rotors to rotate so as to extract electricity.
3. A rotary machine as set forth in claim 1 , wherein the first and second rotational units are first and second rotational units in a scroll type rotary machine, the first and second rotational units provided with a first scroll rotor and a second scroll rotor eccentrically engaging with the first scroll rotor; and
the first and second scroll rotors are rotatably supported at the housing by respective bearings adjoining and eccentric to each other, and the first and second scroll rotors are respectively supported through the first and second motor rotors by thrust bearings at the housing in the thrust direction.
4. A rotary machine as set forth in claim 1 , wherein the first and second rotational unit are first and second rotational units in a scroll type rotary machine, the first and second rotational units provided with a first scroll rotor having a substantially circular end plate part and spiral shaped scroll vane part and a second scroll part having a substantially circular end plate part and spiral shaped scroll vane part;
the scroll vane parts of the first scroll rotor and second scroll rotor engage eccentrically with each other to thereby form a plurality of working chambers taking in working fluid and rendering it high pressure between the scroll vane parts; and
a high pressure cavity is defined inside of the inside wall at the side opposite to the discharge port in the housing so that a first pressure is applied to either of the end plate parts of the first or second scroll rotor, a second pressure applied to the plurality of the working chambers as a whole being set so as to become smaller than the first pressure so as to eliminate the bearing for receiving the force in the thrust direction for the inside wall of the housing at the side defining the high pressure cavity.
5. A rotary piston type rotary machine sucking in working fluid through a suction port into its housing to render it a high pressure and discharging it through a discharge port, provided with
a motor stator provided at an inside circumferential surface of the housing and having inside surfaces, which include a step surface, designed to enclose a housing interior cavity by the inside surfaces;
first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and
first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other;
the first and second rotational units provided with first and second rotors respectively arranged between a first side plate and middle plate or between the middle plate and a second side plate through a shaft,
first and second cylinders arranged eccentric to the first and second rotors respectively,
first and second working chambers respectively formed between the first rotor and first cylinder or between the second rotor and second cylinder, and
first and second vanes protruding out from the first and second cylinders toward the first and second rotors in the first and second working chambers so as to abut against the first and second rotors by first and second spring members.
6. A swing type rotary machine sucking in working fluid through a suction port into its housing to render it a high pressure and discharging it through a discharge port, provided with
a motor stator provided at an inside circumferential surface of the housing and having inside surfaces, which include a step surface, designed to enclose a housing interior cavity by the inside surfaces;
first and second motor rotors arranged at the insides of the inside surfaces separated by the step surface of the motor stator; and
first and second rotational units, the first and second rotational units coupled to the first and second motor rotors respectively, and the first and second rotational units supported at the housing adjoiningly and eccentrically to each other;
the first and second rotational units provided with first and second rotors respectively arranged between a first side plate and middle plate or between the middle plate and a second side plate through a shaft,
first and second cylinders arranged eccentric to the first and second rotors respectively,
first and second working chambers respectively formed between the first rotor and first cylinder or between the second rotor and second cylinder, and
first and second driving pins provided protruding out from the first and second rotors and coupling the first and second rotors to the first and second cylinders swingingly.
7. A rotary machine as set forth in claim 1 , wherein the first and second rotational unit are 180 degrees out of phase with each other and are arranged inside of the motor stator in the cavity inside the housing.
Applications Claiming Priority (2)
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JP2009-157196 | 2009-07-01 | ||
JP2009157196A JP2011012595A (en) | 2009-07-01 | 2009-07-01 | Rotary machine |
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US20110002797A1 true US20110002797A1 (en) | 2011-01-06 |
Family
ID=43412770
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US12/662,631 Abandoned US20110002797A1 (en) | 2009-07-01 | 2010-04-27 | Rotary machine |
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JP (1) | JP2011012595A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2014162150A1 (en) * | 2013-04-05 | 2014-10-09 | The University Of Warwick | Scroll expander with electricity generating scrolls |
US20180223843A1 (en) * | 2017-02-06 | 2018-08-09 | Emerson Climate Technologies, Inc. | Co-rotating compressor |
CN108425843A (en) * | 2017-02-06 | 2018-08-21 | 艾默生环境优化技术有限公司 | Corotation rotary compressor |
US10215174B2 (en) | 2017-02-06 | 2019-02-26 | Emerson Climate Technologies, Inc. | Co-rotating compressor with multiple compression mechanisms |
US10280922B2 (en) | 2017-02-06 | 2019-05-07 | Emerson Climate Technologies, Inc. | Scroll compressor with axial flux motor |
US10465954B2 (en) | 2017-02-06 | 2019-11-05 | Emerson Climate Technologies, Inc. | Co-rotating compressor with multiple compression mechanisms and system having same |
CN112761944A (en) * | 2021-01-28 | 2021-05-07 | 新昌鹏峰智能科技有限公司 | Electric double-acting scroll compressor |
CN113270971A (en) * | 2021-04-20 | 2021-08-17 | 淮阴工学院 | Outer rotor hydraulic motor generator |
US11359631B2 (en) | 2019-11-15 | 2022-06-14 | Emerson Climate Technologies, Inc. | Co-rotating scroll compressor with bearing able to roll along surface |
US11624366B1 (en) | 2021-11-05 | 2023-04-11 | Emerson Climate Technologies, Inc. | Co-rotating scroll compressor having first and second Oldham couplings |
US11732713B2 (en) | 2021-11-05 | 2023-08-22 | Emerson Climate Technologies, Inc. | Co-rotating scroll compressor having synchronization mechanism |
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JP7103714B2 (en) * | 2018-07-30 | 2022-07-20 | サンデン・オートモーティブコンポーネント株式会社 | Scroll inflator |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090123315A1 (en) * | 2004-12-22 | 2009-05-14 | Mitsubishi Electric Corporation | Scroll Compressor |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH057984U (en) * | 1991-07-15 | 1993-02-02 | 三菱電機株式会社 | Fluid machinery |
JPH0914160A (en) * | 1995-06-23 | 1997-01-14 | Mitsubishi Electric Corp | Scroll type pump |
JP2000034989A (en) * | 1998-07-17 | 2000-02-02 | Matsushita Electric Ind Co Ltd | Scroll compressor |
JP2002357188A (en) * | 2001-05-30 | 2002-12-13 | Toyota Industries Corp | Scroll compressor and gas compressing method for scroll compressor |
-
2009
- 2009-07-01 JP JP2009157196A patent/JP2011012595A/en active Pending
-
2010
- 2010-04-27 US US12/662,631 patent/US20110002797A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090123315A1 (en) * | 2004-12-22 | 2009-05-14 | Mitsubishi Electric Corporation | Scroll Compressor |
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WO2014162150A1 (en) * | 2013-04-05 | 2014-10-09 | The University Of Warwick | Scroll expander with electricity generating scrolls |
CN105189927A (en) * | 2013-04-05 | 2015-12-23 | 华威大学 | Scroll expander with electricity generating scrolls |
US9970441B2 (en) | 2013-04-05 | 2018-05-15 | The University Of Warwick | Scroll expander with electricity generating scrolls |
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CN108425843A (en) * | 2017-02-06 | 2018-08-21 | 艾默生环境优化技术有限公司 | Corotation rotary compressor |
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US10215174B2 (en) | 2017-02-06 | 2019-02-26 | Emerson Climate Technologies, Inc. | Co-rotating compressor with multiple compression mechanisms |
US10280922B2 (en) | 2017-02-06 | 2019-05-07 | Emerson Climate Technologies, Inc. | Scroll compressor with axial flux motor |
US10415567B2 (en) | 2017-02-06 | 2019-09-17 | Emerson Climate Technologies, Inc. | Scroll compressor with axial flux motor |
US20180223843A1 (en) * | 2017-02-06 | 2018-08-09 | Emerson Climate Technologies, Inc. | Co-rotating compressor |
US10718330B2 (en) | 2017-02-06 | 2020-07-21 | Emerson Climate Technologies, Inc. | Co-rotating compressor with multiple compression mechanisms |
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US11732713B2 (en) | 2021-11-05 | 2023-08-22 | Emerson Climate Technologies, Inc. | Co-rotating scroll compressor having synchronization mechanism |
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