EP0475545A1 - Scroll type fluid machinery and assembling method of the same - Google Patents
Scroll type fluid machinery and assembling method of the same Download PDFInfo
- Publication number
- EP0475545A1 EP0475545A1 EP91250214A EP91250214A EP0475545A1 EP 0475545 A1 EP0475545 A1 EP 0475545A1 EP 91250214 A EP91250214 A EP 91250214A EP 91250214 A EP91250214 A EP 91250214A EP 0475545 A1 EP0475545 A1 EP 0475545A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cup
- scroll
- shaped casing
- positioning
- stationary scroll
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F01C1/0207—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F01C1/0215—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/102—Adjustment of the interstices between moving and fixed parts of the machine by means other than fluid pressure
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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
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2230/00—Manufacture
- F05B2230/60—Assembly methods
Definitions
- the present invention relates to a scroll type fluid machinery used as a compressor, an expansion machine and the like and an assembling method of the same.
- This assembling method is executed as follows.
- an assembling method characterized in that, after a pin is inserted into positioning holes provided on the leg formed on the outer surface of the end plate of the stationary scroll and at the bottom of the cup-shaped casing, respectively, and a relative angle between the stationary scroll and the cup-shaped casing is positioned through the pin, the stationary scroll and the cup-shaped casing are fixed to each other and then, a positioning portion provided on a flange end surface of a front case in which the revolving scroll, a revolution drive mechanism and a mechanism for checking rotation on its axis are incorporated and the positioning portion of the cup-shaped casing are assembled with positioning, and the front case and the cup-shaped casing are fixed to each other thereafter.
- the cup-shaped casing and the stationary scroll are positioned at an accurate relative angle by means of the positioning pin. Accordingly, it is possible to assemble the stationary scroll and the revolving scroll at a predetermined angle dislocation easily and quickly.
- Fig. 1 and Fig. 5 show an embodiment of the present invention.
- Fig. 5 shows a longitudinal section of a scroll type fluid machinery.
- a housing 1 consists of a cup-shaped casing 2, a front case 4 which blocks one end opening thereof and is fastened thereto with a bolt 3, and a front cover 6 fastened to the front case with a bolt 5.
- a rotary shaft 7 which penetrates through the front cover 6 is supported rotatably by the housing 1 through bearings 8 and 9.
- a stationary scroll 10 and a revolving scroll 14 are disposed inside the housing 1.
- the stationary scroll 10 is provided with an end plate 11 and a spiral wrap 12 which is set up on the inner surface thereof.
- the outer circumferential surface of the end plate 11 is attached closely to the inner circumferential surface of the cup-shaped casing 2 through a seal ring 35, thereby to partition the inside of the housing 1.
- a discharge cavity 31 is delimited on the outer surface side of the end plate 11, and a suction chamber 32 is delimited on the inner surface side.
- bolts 13 are inserted through a plurality of bolt holes 33 which are bored on a bottom 2a of the cup-shaped casing 2, respectively.
- the stationary scroll 10 is fixed to the cup-shaped casing 2 by screwing tips of these bolts 13 into screw holes 34 bored in the end plate 11 and fastening the tips thereto.
- the revolving scroll 14 is provided with an end plate 15 and a spiral wrap 16 which is set up on the inner surface thereof, and the spiral wrap 16 has substantially the same configuration as that of the spiral wrap 12.
- the revolving scroll 14 and the stationary scroll 10 are made eccentric with each other by a predetermined distance, and are engaged with each other while shifting the angle by 180" as shown in the figure.
- Chip seals 17 buried on a tip surface of the spiral wrap 12 come in close contact with the inner surface of the end plate
- tip seals 18 buried on a tip surface of the spiral wrap 16 come in close contact with the inner surface of the end plate 11, and side surfaces of the spiral wraps 12 and 16 come in linear contact with each other at a plurality of locations.
- a plurality of closed small chambers 19a and 19b which form almost point symmetry with respect to the center of the spiral are delimited.
- a bushing 21 is inserted rotatably through a slewing bearing 23, and an eccentric pin 25 projected at an inner end of the rotary shaft 7 is fitted rotatably in an eccentric hole 24 bored in the bushing 21. Further, a balance weight 27 is fixed to the bushing 21.
- a thrust member 36 and a mechanism 26 for checking rotation on its axis such as an Oldham's link are interposed between the outer circumferential edge of the outer surface of the end plate 15 and the end surface of the front case 4.
- the revolving scroll 14 is driven through a revolution drive mechanism consisting of the eccentric pin 25, the bushing 21, the slewing bearing 23, the boss 20 and the like, and the revolving scroll 14 revolves in a solar motion while being prevented from rotation on its axis by the mechanism 26 for checking rotation on its axis.
- the linear contact portion between spiral wraps 12 and 16 moves gradually toward the center of the spiral by revolution in a solar motion of the revolving scroll 14.
- the closed small chambers 19a and 19b move toward the center of the spiral while reducing the volume thereof.
- gas is suctioned into a suction chamber 32 through a suction port not shown and is taken into the closed small chambers 19a and 19b through outer end opening portions of the spiral wraps 12 and 16, and reaches a central chamber 22 while being compressed.
- the gas passes therefrom through a discharge port 29 bored in the end plate 11 of the stationary scroll 10, pushes a discharge valve 30 open and is discharged into a discharge cavity 31, and is discharged further to the outside of the housing 1 through a discharge port not shown.
- At least one positioning hole 52 which stretches axially is bored on the outer circumferential edge on the inner surface of the end plate 11 of the stationary scroll 10, and at least one positioning hole 53 which stretches axially is bored on a flange 2b on the opening end side of the cup-shaped casing 2.
- the stationary scroll 10 is fitted into the cup-shaped casing 2, then a pin 60 provided on a jig 51 is inserted into the positioning hole 52 while inserting the tip of the positioning jig 51 into the cup-shaped casing 2, and a pin 61 is inserted into a positioning hole 53 at the same time.
- the cup-shaped casing 2 and the stationary scroll 10 are positioned at a regular relative angle through the jig 51.
- cup-shaped casing 2 and the stationary scroll 10 are fixed to each other by having a plurality of bolts 13 penetrate through bolt holes 33 and screwing the tips thereof into screw holes 34.
- the revolving scroll 14 and the front case 4 are assembled at a regular relative angle by incorporating the front cover 6, the revolving scroll 14, revolution drive mechanisms 7, 8, 9, 21, 23 and 24, the mechanism 26 for checking rotation on its axis, the thrust member 36 and the like into the front case 4.
- a positioning hole 65 provided on an end surface of a flange 4a of the front case 4 is made to match with the positioning hole 53 of the cup-shaped casing 2, and the front case 4 and the cup-shaped casing 2 are fixed with a bolt 3 after adjusting these holes at a regular relative angle.
- the stationary scroll 10 is fixed to the cup-shaped casing 2 at a regular relative angle, and the revolving scroll 14 is incorporated in the front case 4 at a regular relative angle. Therefore, the stationary scroll 10 and the revolving scroll 14 are engaged with each other at a predetermined angle dislocation of 180" by fixing the cup-shaped casing 2 and the front case 4 at a regular relative angle.
- positioning is made by inserting a pin 60 of the jig 51 into the positioning hole 52, but, as shown in Figs. 2 and 3, it is also possible to position the stationary scroll 10 and the positioning jig 51 at a regular relative angle by boring a positioning slit 54 extending radially on an outer circumferential edge of the inner surface of the end plate 11 of the stationary scroll 10 and fitting the pin 60 of the jig 51 to the positioning slit 54.
- the positioning hole 52 can be provided on the tip surface of the spiral wrap 12 of the stationary scroll 10, and a slit, a projected bar and the like may also be provided on the inner circumferential surface of the cup-shaped casing 2 in place of the positioning hole 53.
- mechanism 26 for checking rotation on its axis consisting of an Oldham's link is provided in above-mentioned embodiment, but a mechanism for checking rotation on its axis having other type and structure may also be used.
- positioning portions are provided on the stationary scroll and the cup-shaped casing, respectively, and these positioning portions are engaged with the positioning jig, thereby to fix the stationary scroll and the cup-shaped casing with each other after positioning the stationary scroll with respect to the cup-shaped casing. Accordingly, it is possible to assemble a scroll type fluid machinery easily and quickly in a state that the stationary scroll and the revolving scroll are engaged with each other at a predetermined relative angle.
- Fig. 6 shows another embodiment of the present invention.
- same symbols are assigned to those members that are the same as Fig. 5, and description thereof will be omitted.
- a leg 40 protruding outwardly is formed on the outside surface of the end plate 11 of the stationary scroll 10, and a tip surface 41 of the leg 40 abuts against a tip surface 43 of a leg 42 protruding inwardly from the bottom 2a of the cup-shaped casing 2.
- a positioning hole 44 having a predetermined depth is bored on the tip surface 41, and a positioning hole 45 having a predetermined depth which opposes to the positioning hole 44 is bored on the tip surface 43 when the stationary scroll 10 and the cup-shaped casing 2 occupy a regular relative angle position, and a pin 37 is inserted into these positioning holes 44 and 45 extending thereover.
- the revolving scroll 14, revolution drive mechanisms 7, 8, 9, 21, 23, 24 and 25 thereof, the mechanism 26 for checking rotation on its axis thereof, the thrust member 36 and the like are assembled in the front case 4 and the front cover 6. With this, the revolving scroll 14 and the front case 4 are assembled at a regular relative angle.
- the stationary scroll 10 is placed in the cup-shaped casing 2 and rotated appropriately, thereby to insert the rear end of the pin 37 into the positioning hole 45 and to make the tip surface 41 abut against the tip surface 43 at the same time.
- cup-shaped casing 2 and the stationary scroll 10 are fastened to each other using a bolt 13. With this, the cup-shaped casing 2 and the stationary scroll 10 are assembled at a regular relative angle.
- the preassembled revolving scroll 14 is engaged with the stationary scroll 10, and the front case 4 and the cup-shaped casing 2 are fastened with the bolt 3 at a regular relative angle thereafter.
- pin 37 is used in the illustrated embodiment, but a plurality of pins may be used, too.
- a leg is formed on an outer surface of an end plate of the stationary scroll, positioning holes are provided on the leg and at the bottom of the cup-shaped casing, respectively, and a pin is inserted into these positioning holes so as to position a relative angle between the stationary scroll and the cup-shaped casing in the present invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
Abstract
Description
- The present invention relates to a scroll type fluid machinery used as a compressor, an expansion machine and the like and an assembling method of the same.
- An assembling method of a scroll type fluid machinery of this type has been disclosed in Japanese Patent Provisional Publication No. 59-224490 (No. 224490/1984).
- This assembling method is executed as follows.
- (1) A cup-shaped casing and a front case which blocks an opening at one end thereof are fastened temporarily by screwing bolts in a plurality of bolt holes which are bored on the casing and the front case.
- (2) A stationary scroll and revolving scroll are engaged with each other, and positioning holes which are bored on the stationary scroll and the revolving scroll, respectively, are made to coincide with each other so as to oppose to each other at a location dislocated by approximately 90 in a reverse direction to a rotating direction of a rotary shaft from a line connecting a plurality of contact points where spiral wraps thereof are in contact with one another. Then, a positioning rod is inserted into these positioning holes from the bottom of the cup-shaped casing.
- (3) The front case is rotated in a reverse direction to the rotating direction of the rotary shaft until movement is sustained.
- (4) The cup-shaped casing and the front case are fastened completely with bolts.
- (5) The positioning rod is pulled out.
- With the process described above, an engagement angle between the stationary scroll and the revolving scroll is set.
- A conventional assembling method of a scroll type fluid machinery required much labor as described above.
- In addition, it is required to bore a through hole for inserting a positioning rod therethrough at the bottom of the cup-shaped casing, and a bolt inserted through the through hole is also screwed in a part of the positioning hole bored in the stationary scroll in order to prevent gas inside a housing constructed of the cup-shaped casing and the front case leaking outside. Furthermore, there have been such problems that numerous components, working mandays and assembling mandays are required and the cost piles up because it is required to seal the clearance between the bolt and the through hole with a seal ring and the like.
- It is an object of the present invention which has been made in view of such circumstances to provide a scroll type fluid machinery in which above-described problems have been solved.
- It is another object of the present invention to propose an assembling method of a scroll type fluid machinery in which above-mentioned problems have been solved similarly.
- (1) The gist of a first invention exists in a scroll type fluid machinery in which a stationary scroll and a revolving scroll having spiral wraps set up on inner surfaces of end plates, respectively, are engaged with each other at a predetermined angle dislocation and housed in a housing with one end opening of a cup-shaped casing blocked with a front case, the stationary scroll is fixed to the cup-shaped casing, and the revolving scroll is made to revolve in a solar motion by means of a revolution drive mechanism while checking the rotation on its axis by means of a mechanism for checking rotation on its axis, characterized in that positioning portions engaged with a positioning jig are provided on the stationary scroll and the cup-shaped casing, respectively.
- In such a scroll type fluid machinery, there is provided an assembling method characterized in that, after positioning a stationary scroll with respect to a cup-shaped casing by having a positioning portion of the stationary scroll and a positioning portion of the cup-shaped casing engaged with a positioning jig, respectively, the stationary scroll and the cup-shaped casing are fixed to each other.
- Furthermore, in the scroll type fluid machinery, there is also provided an assembling method characterized in that, after positioning a stationary scroll with respect to a cup-shaped casing by having a positioning portion of the stationary scroll and a positioning portion of the cup-shaped casing engaged with a positioning jig, respectively, the stationary scroll and the cup-shaped casing are fixed to each other and then, after a positioning portion provided on a flange end surface of a front case in which a revolving scroll, a revolution drive mechanism and a mechanism for checking rotation on its axis are incorporated and the positioning portion of the cup-shaped casing are assembled with positioning, the front case and the cup-shaped casing are fixed to each other.
- Above-described construction being provided according to the present invention, it is possible to fix the stationary scroll and the cup-shaped casing to each other after positioning a stationary scroll with respect to a cup-shaped casing by having a positioning portion of the stationary scroll and a positioning portion of the cup-shaped casing engaged with a positioning jig, respectively.
- (2) The gist of a second invention exists in a scroll type fluid machinery in which a stationary scroll and a revolving scroll having spiral wraps set up on inner surfaces of end plates, respectively, are engaged with each other at a predetermined angle dislocation and housed in a housing with one end opening of a cup-shaped casing blocked with a front case, the stationary scroll is fixed to the casing, and the revolving scroll is made to revolve in a solar motion by means of a revolution drive mechanism while checking the rotation on its axis by means of a mechanism for checking rotation on its axis characterized in that a leg is formed on an outer surface of an end plate of the stationary scroll, positioning holes are provided on this leg and at the bottom of the cup-shaped casing, respectively, a pin is inserted into these positioning holes, and a relative angle between the stationary scroll and the cup-shaped casing is positioned through the pin.
- In such a scroll type fluid machinery, there is provided an assembling method characterized in that, after a pin is inserted into positioning holes provided on the leg formed on the outer surface of the end plate of the stationary scroll and at the bottom of the cup-shaped casing, respectively, and a relative angle between the stationary scroll and the cup-shaped casing is positioned through the pin, the stationary scroll and the cup-shaped casing are fixed to each other and then, a positioning portion provided on a flange end surface of a front case in which the revolving scroll, a revolution drive mechanism and a mechanism for checking rotation on its axis are incorporated and the positioning portion of the cup-shaped casing are assembled with positioning, and the front case and the cup-shaped casing are fixed to each other thereafter.
- Above-described construction being provided in the present invention, the cup-shaped casing and the stationary scroll are positioned at an accurate relative angle by means of the positioning pin. Accordingly, it is possible to assemble the stationary scroll and the revolving scroll at a predetermined angle dislocation easily and quickly.
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- Fig. 1 is a partial longitudinal sectional view showing a first embodiment of an assembling method of the present invention;
- Fig. 2 and Fig. 3 show a second embodiment of an assembling method of the present invention, in which Fig. 2 is a partial longitudinal sectional view and Fig. 3 is a partial bottom view;
- Fig. 4 is a partial longitudinal sectional view showing a third embodiment of an assembling method of the present invention;
- Fig. 5 is a longitudinal sectional view of a scroll type fluid machinery according to the present invention; and
- Fig. 6 is a longitudinal sectional view showing another embodiment of a scroll type fluid machinery of the present invention.
- Fig. 1 and Fig. 5 show an embodiment of the present invention.
- Fig. 5 shows a longitudinal section of a scroll type fluid machinery. In Fig. 5, a housing 1 consists of a cup-
shaped casing 2, afront case 4 which blocks one end opening thereof and is fastened thereto with abolt 3, and a front cover 6 fastened to the front case with a bolt 5. A rotary shaft 7 which penetrates through the front cover 6 is supported rotatably by the housing 1 throughbearings 8 and 9. - A
stationary scroll 10 and a revolvingscroll 14 are disposed inside the housing 1. - The
stationary scroll 10 is provided with an end plate 11 and aspiral wrap 12 which is set up on the inner surface thereof. The outer circumferential surface of the end plate 11 is attached closely to the inner circumferential surface of the cup-shaped casing 2 through aseal ring 35, thereby to partition the inside of the housing 1. With this, adischarge cavity 31 is delimited on the outer surface side of the end plate 11, and asuction chamber 32 is delimited on the inner surface side. Then,bolts 13 are inserted through a plurality ofbolt holes 33 which are bored on abottom 2a of the cup-shaped casing 2, respectively. Further, thestationary scroll 10 is fixed to the cup-shaped casing 2 by screwing tips of thesebolts 13 intoscrew holes 34 bored in the end plate 11 and fastening the tips thereto. - The revolving
scroll 14 is provided with anend plate 15 and aspiral wrap 16 which is set up on the inner surface thereof, and thespiral wrap 16 has substantially the same configuration as that of thespiral wrap 12. - The
revolving scroll 14 and thestationary scroll 10 are made eccentric with each other by a predetermined distance, and are engaged with each other while shifting the angle by 180" as shown in the figure. Chip seals 17 buried on a tip surface of thespiral wrap 12 come in close contact with the inner surface of theend plate 15,tip seals 18 buried on a tip surface of thespiral wrap 16 come in close contact with the inner surface of the end plate 11, and side surfaces of thespiral wraps small chambers - Inside a
cylindrical boss 20 projected at a central portion of the outer surface of theend plate 15, abushing 21 is inserted rotatably through a slewing bearing 23, and aneccentric pin 25 projected at an inner end of the rotary shaft 7 is fitted rotatably in aneccentric hole 24 bored in thebushing 21. Further, abalance weight 27 is fixed to the bushing 21. - A
thrust member 36 and amechanism 26 for checking rotation on its axis such as an Oldham's link are interposed between the outer circumferential edge of the outer surface of theend plate 15 and the end surface of thefront case 4. - Now, when the rotary shaft 7 is rotated, the
revolving scroll 14 is driven through a revolution drive mechanism consisting of theeccentric pin 25, thebushing 21, the slewing bearing 23, theboss 20 and the like, and the revolving scroll 14 revolves in a solar motion while being prevented from rotation on its axis by themechanism 26 for checking rotation on its axis. - The linear contact portion between
spiral wraps revolving scroll 14. As a result, the closedsmall chambers - Then, gas is suctioned into a
suction chamber 32 through a suction port not shown and is taken into the closedsmall chambers spiral wraps central chamber 22 while being compressed. The gas passes therefrom through adischarge port 29 bored in the end plate 11 of thestationary scroll 10, pushes adischarge valve 30 open and is discharged into adischarge cavity 31, and is discharged further to the outside of the housing 1 through a discharge port not shown. - At least one
positioning hole 52 which stretches axially is bored on the outer circumferential edge on the inner surface of the end plate 11 of thestationary scroll 10, and at least onepositioning hole 53 which stretches axially is bored on aflange 2b on the opening end side of the cup-shaped casing 2. - In the next place, an assembling method of the fluid machinery will be described with reference to Fig. 1.
- The
stationary scroll 10 is fitted into the cup-shaped casing 2, then apin 60 provided on ajig 51 is inserted into thepositioning hole 52 while inserting the tip of thepositioning jig 51 into the cup-shaped casing 2, and apin 61 is inserted into apositioning hole 53 at the same time. Thus, the cup-shaped casing 2 and thestationary scroll 10 are positioned at a regular relative angle through thejig 51. - Next, the cup-
shaped casing 2 and thestationary scroll 10 are fixed to each other by having a plurality ofbolts 13 penetrate throughbolt holes 33 and screwing the tips thereof intoscrew holes 34. - On the other hand, the revolving scroll 14 and the
front case 4 are assembled at a regular relative angle by incorporating the front cover 6, the revolving scroll 14,revolution drive mechanisms mechanism 26 for checking rotation on its axis, thethrust member 36 and the like into thefront case 4. - A
positioning hole 65 provided on an end surface of aflange 4a of thefront case 4 is made to match with thepositioning hole 53 of the cup-shaped casing 2, and thefront case 4 and the cup-shaped casing 2 are fixed with abolt 3 after adjusting these holes at a regular relative angle. - Thus, the
stationary scroll 10 is fixed to the cup-shaped casing 2 at a regular relative angle, and therevolving scroll 14 is incorporated in thefront case 4 at a regular relative angle. Therefore, thestationary scroll 10 and therevolving scroll 14 are engaged with each other at a predetermined angle dislocation of 180" by fixing the cup-shaped casing 2 and thefront case 4 at a regular relative angle. - In above-described first embodiment, positioning is made by inserting a
pin 60 of thejig 51 into thepositioning hole 52, but, as shown in Figs. 2 and 3, it is also possible to position thestationary scroll 10 and thepositioning jig 51 at a regular relative angle by boring apositioning slit 54 extending radially on an outer circumferential edge of the inner surface of the end plate 11 of thestationary scroll 10 and fitting thepin 60 of thejig 51 to thepositioning slit 54. - Further, as shown in Fig. 4, it is possible to position the relative angle between the
stationary scroll 10 and the cup-shaped casing 2 byboring positioning holes positioning jig 51, inserting apositioning pin 55 so as to extend over thepositioning hole 52 provided on the end plate 11 of thestationary scroll 10 and apositioning hole 63 of thejig 51, and inserting apositioning pin 56 so as to extend over thepositioning hole 53 provided on aflange 2b of the cup-shaped casing 2 and thepositioning hole 64 of thejig 51. - Besides, although not shown in the figure, the
positioning hole 52 can be provided on the tip surface of the spiral wrap 12 of thestationary scroll 10, and a slit, a projected bar and the like may also be provided on the inner circumferential surface of the cup-shapedcasing 2 in place of thepositioning hole 53. - Further, the
mechanism 26 for checking rotation on its axis consisting of an Oldham's link is provided in above-mentioned embodiment, but a mechanism for checking rotation on its axis having other type and structure may also be used. - As described above, according to the present invention, positioning portions are provided on the stationary scroll and the cup-shaped casing, respectively, and these positioning portions are engaged with the positioning jig, thereby to fix the stationary scroll and the cup-shaped casing with each other after positioning the stationary scroll with respect to the cup-shaped casing. Accordingly, it is possible to assemble a scroll type fluid machinery easily and quickly in a state that the stationary scroll and the revolving scroll are engaged with each other at a predetermined relative angle.
- Being different from a conventional machinery, it is not required to bore a through hole for inserting a positioning rod in the cup-shaped casing and bolt and seal ring for blocking the hole are not required. Thus, number of parts, working mandays and assembly mandays are reduced and the cost may be cut down.
- Fig. 6 shows another embodiment of the present invention. In Fig. 6, same symbols are assigned to those members that are the same as Fig. 5, and description thereof will be omitted.
- In Fig. 6, a
leg 40 protruding outwardly is formed on the outside surface of the end plate 11 of thestationary scroll 10, and a tip surface 41 of theleg 40 abuts against a tip surface 43 of aleg 42 protruding inwardly from the bottom 2a of the cup-shapedcasing 2. - A
positioning hole 44 having a predetermined depth is bored on the tip surface 41, and apositioning hole 45 having a predetermined depth which opposes to thepositioning hole 44 is bored on the tip surface 43 when thestationary scroll 10 and the cup-shapedcasing 2 occupy a regular relative angle position, and apin 37 is inserted into these positioning holes 44 and 45 extending thereover. - Then, an assembling method of the fluid machinery will be described.
- The revolving
scroll 14,revolution drive mechanisms mechanism 26 for checking rotation on its axis thereof, thethrust member 36 and the like are assembled in thefront case 4 and the front cover 6. With this, the revolvingscroll 14 and thefront case 4 are assembled at a regular relative angle. - Next, after inserting the tip of the
pin 37 into thepositioning hole 44 of thestationary scroll 10 and exposing the rear end thereof, thestationary scroll 10 is placed in the cup-shapedcasing 2 and rotated appropriately, thereby to insert the rear end of thepin 37 into thepositioning hole 45 and to make the tip surface 41 abut against the tip surface 43 at the same time. - Thereafter, the cup-shaped
casing 2 and thestationary scroll 10 are fastened to each other using abolt 13. With this, the cup-shapedcasing 2 and thestationary scroll 10 are assembled at a regular relative angle. - Then, the preassembled revolving
scroll 14 is engaged with thestationary scroll 10, and thefront case 4 and the cup-shapedcasing 2 are fastened with thebolt 3 at a regular relative angle thereafter. - One piece of
pin 37 is used in the illustrated embodiment, but a plurality of pins may be used, too. - Further, a case in which an Oldham's link is used as the
mechanism 26 for checking rotation on its axis has been described, but other mechanism for checking rotation on its axis may also be used. - As described above, a leg is formed on an outer surface of an end plate of the stationary scroll, positioning holes are provided on the leg and at the bottom of the cup-shaped casing, respectively, and a pin is inserted into these positioning holes so as to position a relative angle between the stationary scroll and the cup-shaped casing in the present invention. Thus, it is possible to assemble a scroll type fluid machinery easily and quickly so that the stationary scroll and the revolving scroll show a predetermined angle dislocation. Further, being different from a conventional machinery, it is not required to bore a through hole for inserting a positioning rod in the cup-shaped casing, and a bolt and a sealing ring for blocking the hole are neither required. Thus, number of parts, working mandays and assembly mandays are reduced and the cost may be cut down.
Claims (6)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP92615/90U | 1990-09-03 | ||
JP9261590U JPH0723522Y2 (en) | 1990-09-03 | 1990-09-03 | Scroll type fluid machinery |
JP234047/90 | 1990-09-04 | ||
JP23404790A JP2680728B2 (en) | 1990-09-04 | 1990-09-04 | Scroll type fluid machine and assembly method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0475545A1 true EP0475545A1 (en) | 1992-03-18 |
EP0475545B1 EP0475545B1 (en) | 1994-11-23 |
Family
ID=26434011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91250214A Expired - Lifetime EP0475545B1 (en) | 1990-09-03 | 1991-07-30 | Scroll type fluid machinery and assembling method of the same |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0475545B1 (en) |
KR (1) | KR950013020B1 (en) |
CN (1) | CN1024941C (en) |
AU (1) | AU647794B2 (en) |
CA (1) | CA2043569C (en) |
DE (1) | DE69105252T2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993023671A1 (en) * | 1992-05-11 | 1993-11-25 | Ford Motor Company Limited | A scroll compressor |
EP0855509A1 (en) * | 1997-01-24 | 1998-07-29 | Mitsubishi Heavy Industries, Ltd. | Scroll hydraulic machine |
EP0889241A1 (en) * | 1997-07-04 | 1999-01-07 | Sanden Corporation | Scroll-type fluid displacement apparatus and method for manufacturing such apparatus |
EP0890709A1 (en) * | 1997-07-10 | 1999-01-13 | Mitsubishi Heavy Industries, Ltd. | Scroll hydraulic machine |
EP0890744A3 (en) * | 1997-07-07 | 2000-02-23 | Tecumseh Products Company | Scroll compressor |
FR2784145A1 (en) * | 1998-10-01 | 2000-04-07 | Sanden Corp | SPIRAL TYPE FLUID MOVING APPARATUS |
CN112643573A (en) * | 2020-12-08 | 2021-04-13 | 湖南贝特新能源科技有限公司 | Clamp for measuring molded line of scroll plate |
US20220235762A1 (en) * | 2021-01-27 | 2022-07-28 | Emerson Climate Technologies, Inc. | Compressor Having Directed Suction |
US11767838B2 (en) | 2019-06-14 | 2023-09-26 | Copeland Lp | Compressor having suction fitting |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4837331B2 (en) * | 2005-08-11 | 2011-12-14 | 三菱電機株式会社 | Scroll fluid machine positioning method and apparatus, and scroll fluid machine assembly method and apparatus |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4065279A (en) * | 1976-09-13 | 1977-12-27 | Arthur D. Little, Inc. | Scroll-type apparatus with hydrodynamic thrust bearing |
US4505655A (en) * | 1980-12-27 | 1985-03-19 | Toyoda Koki Kabushiki Kaisha | Vane pump with positioning pins for cam ring and side plates |
DE3542929A1 (en) * | 1984-12-05 | 1986-06-12 | Hitachi, Ltd., Tokio/Tokyo | METHOD AND DEVICE FOR POSITIONING A COMPRESSOR SPIRAL ELEMENT |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58170882A (en) * | 1982-03-31 | 1983-10-07 | Toshiba Corp | Scroll compressor |
JPS59224490A (en) * | 1983-06-03 | 1984-12-17 | Sanden Corp | Scroll type hydraulic device |
-
1991
- 1991-05-30 CA CA002043569A patent/CA2043569C/en not_active Expired - Fee Related
- 1991-06-06 AU AU78220/91A patent/AU647794B2/en not_active Ceased
- 1991-06-21 CN CN91104203A patent/CN1024941C/en not_active Expired - Fee Related
- 1991-07-30 EP EP91250214A patent/EP0475545B1/en not_active Expired - Lifetime
- 1991-07-30 DE DE69105252T patent/DE69105252T2/en not_active Expired - Fee Related
- 1991-09-03 KR KR1019910015324A patent/KR950013020B1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4065279A (en) * | 1976-09-13 | 1977-12-27 | Arthur D. Little, Inc. | Scroll-type apparatus with hydrodynamic thrust bearing |
US4505655A (en) * | 1980-12-27 | 1985-03-19 | Toyoda Koki Kabushiki Kaisha | Vane pump with positioning pins for cam ring and side plates |
DE3542929A1 (en) * | 1984-12-05 | 1986-06-12 | Hitachi, Ltd., Tokio/Tokyo | METHOD AND DEVICE FOR POSITIONING A COMPRESSOR SPIRAL ELEMENT |
Non-Patent Citations (1)
Title |
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PATENT ABSTRACTS OF JAPAN, vol. 8, no. 9 (M-268)[1446], 14th January 1984; & JP-A-58 170 882 (TOKYO SHIBAURA DENKI) 07-10-1983 * |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993023671A1 (en) * | 1992-05-11 | 1993-11-25 | Ford Motor Company Limited | A scroll compressor |
EP0855509A1 (en) * | 1997-01-24 | 1998-07-29 | Mitsubishi Heavy Industries, Ltd. | Scroll hydraulic machine |
EP0889241A1 (en) * | 1997-07-04 | 1999-01-07 | Sanden Corporation | Scroll-type fluid displacement apparatus and method for manufacturing such apparatus |
US6139292A (en) * | 1997-07-04 | 2000-10-31 | Sanden Corporation | Scroll-type fluid displacement apparatus including oldham coupling mechanism and method for manufacturing such apparatus |
AU738646B2 (en) * | 1997-07-07 | 2001-09-20 | Tecumseh Products Company | Mechanism and method for aligning a fixed scroll in a scroll compressor |
EP0890744A3 (en) * | 1997-07-07 | 2000-02-23 | Tecumseh Products Company | Scroll compressor |
US6135737A (en) * | 1997-07-10 | 2000-10-24 | Mitsubishi Heavy Industries, Ltd. | Scroll hydraulic machine |
EP0890709A1 (en) * | 1997-07-10 | 1999-01-13 | Mitsubishi Heavy Industries, Ltd. | Scroll hydraulic machine |
CN1079490C (en) * | 1997-07-10 | 2002-02-20 | 三菱重工业株式会社 | Scroll hydraulic machine |
FR2784145A1 (en) * | 1998-10-01 | 2000-04-07 | Sanden Corp | SPIRAL TYPE FLUID MOVING APPARATUS |
US11767838B2 (en) | 2019-06-14 | 2023-09-26 | Copeland Lp | Compressor having suction fitting |
CN112643573A (en) * | 2020-12-08 | 2021-04-13 | 湖南贝特新能源科技有限公司 | Clamp for measuring molded line of scroll plate |
US20220235762A1 (en) * | 2021-01-27 | 2022-07-28 | Emerson Climate Technologies, Inc. | Compressor Having Directed Suction |
US11619228B2 (en) * | 2021-01-27 | 2023-04-04 | Emerson Climate Technologies, Inc. | Compressor having directed suction |
Also Published As
Publication number | Publication date |
---|---|
KR920006649A (en) | 1992-04-27 |
KR950013020B1 (en) | 1995-10-24 |
EP0475545B1 (en) | 1994-11-23 |
CN1059585A (en) | 1992-03-18 |
CA2043569C (en) | 1995-05-09 |
DE69105252T2 (en) | 1995-03-30 |
AU7822091A (en) | 1992-03-05 |
DE69105252D1 (en) | 1995-01-05 |
AU647794B2 (en) | 1994-03-31 |
CN1024941C (en) | 1994-06-08 |
CA2043569A1 (en) | 1992-03-04 |
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