WO2018150977A1

WO2018150977A1 - Two-way-rotating scroll compressor and method for assembling same

Info

Publication number: WO2018150977A1
Application number: PCT/JP2018/004225
Authority: WO
Inventors: 弘文平田; 隆英伊藤; 竹内　真実; 拓馬山下; 恵太北口
Original assignee: 三菱重工サーマルシステムズ株式会社; 三菱重工業株式会社
Priority date: 2017-02-17
Filing date: 2018-02-07
Publication date: 2018-08-23
Also published as: JP6787814B2; EP3569862A1; EP3569862A4; JP2018132036A; US20190376513A1; CN110337543A; CN110337543B

Abstract

This two-way-rotating scroll compressor comprises: a drive-side scroll member (70) rotatably driven by a drive unit and having a spiraling drive-side wall body (71b) disposed on a drive-side end plate (71a); and a driven-side scroll member disposed on a driven-side end plate and having a driven-side wall body corresponding to the drive-side wall body (71b), the driven-side wall body forming a compression chamber by being meshed with the drive-side wall body (71b). At the axially distal end of the drive-side wall body (71b), positioning pins (40) for positioning the phase of the drive-side scroll member (70) about a drive-side rotational axis line (CL1) are provided in two locations about the drive-side rotational axis line (CL1), and a dummy pin (41) is provided so as to be at equal angular intervals with the positioning pins (40) about the drive-side rotational axis line (CL1).

Description

Double-rotating scroll compressor and method of assembling the same

The present invention relates to a dual-rotating scroll compressor and a method of assembling the same.

2. Description of the Related Art A twin-rotating scroll compressor has been known conventionally (see Patent Document 1). This includes a drive-side scroll and a driven-side scroll that rotates in synchronization with the drive-side scroll, and the driven shaft that supports the rotation of the driven-side scroll with respect to the drive shaft that rotates the drive-side scroll The drive shaft and the driven shaft are rotated at the same angular velocity in the same direction.

Patent No. 5443132

The dual rotation scroll compressor may adopt a structure in which the drive side scroll or the driven side scroll is divided in the axial direction, and the tip of the spiral wall of the drive side scroll or the driven side scroll is a support member A structure supported by may be employed. When adopting such a structure, in order to ensure meshing of the spiral wall, it is necessary to accurately position the phase around the rotation axis of the drive side scroll and the driven side scroll. Although the structure for performing this phase positioning is provided at at least two places around the rotation axis, the center of gravity shifts from the rotation axis depending on the way of providing the positioning structure, which causes noise and vibration.

The present invention has been made in view of such circumstances, and provides a double-turning scroll compressor capable of suppressing as much as possible the generation of noise and vibration due to the shift of the center of gravity of the scroll member and a method of assembling the same. The purpose is to

In order to solve the above problems, the dual-rotating scroll compressor of the present invention and the assembling method thereof employ the following means.

The dual-rotating scroll compressor according to one aspect of the present invention includes a drive-side scroll member that has a spiral drive side wall body that is rotationally driven by a drive unit and that is disposed on a drive-side end plate; A driven side scroll member having a driven side wall corresponding to the drive side wall, the driven side wall being engaged with the drive side wall to form a compression chamber, and the drive side scroll member A synchronous drive mechanism for transmitting a driving force from the drive-side scroll member to the driven-side scroll member so that the driven-side scroll member rotates at the same angular velocity in the same direction and in the same direction; In the front end of the drive shaft, positioning pins for positioning the phase around the rotation axis of the drive-side scroll member are provided at two positions around the rotation axis, and And one or more dummy pins provided at equal angular intervals around the rotation axis, and / or at the tip of the driven side wall in the axial direction, around the rotation axis of the driven scroll member. Two positioning pins for positioning the phase are provided around the rotation axis, and one or more dummy pins provided at equal angular intervals around the rotation axis along with the positioning pins are provided.

The drive side wall disposed on the end plate of the drive side scroll member is engaged with the corresponding driven side wall of the driven side scroll member. The drive-side scroll member is rotationally driven by the drive unit, and the driving force transmitted to the drive-side scroll member is transmitted to the driven-side scroll member via the synchronous drive mechanism. Thus, the driven scroll member rotates and performs rotational motion at the same angular velocity in the same direction with respect to the drive scroll member. Thus, a dual-rotation scroll compressor is provided in which both the drive-side scroll member and the driven-side scroll member rotate.
By using two positioning pins, positioning of the phase around the rotation axis is performed. Furthermore, the center of gravity can be determined around the rotation axis by providing the dummy pins so as to be equiangularly spaced around the rotation axis together with the positioning pin. Thereby, low noise and low vibration can be realized.

The dual-rotating scroll compressor according to one aspect of the present invention includes a drive-side scroll member that has a spiral drive side wall body that is rotationally driven by a drive unit and that is disposed on a drive-side end plate; A driven side scroll member having a driven side wall corresponding to the drive side wall, the driven side wall being engaged with the drive side wall to form a compression chamber, and the drive side scroll member A synchronous drive mechanism for transmitting a driving force from the drive-side scroll member to the driven-side scroll member so that the driven-side scroll member rotates at the same angular velocity in the same direction and in the same direction; The assembly reference hole into which the assembly pin used at the time of assembly is inserted to position the phase around the rotation axis of the drive side scroll member is inserted at the tip of the Two or more dummy holes are provided at two locations, and at least one dummy hole provided at equal angular intervals around the rotation axis along with the assembly reference hole, and / or at the tip of the driven sidewall in the axial direction An assembly reference hole into which an assembly pin used at the time of assembly is inserted for positioning the phase around the rotation axis of the driven scroll member is provided at two positions around the rotation axis, and together with the assembly reference hole around the rotation axis One or more dummy holes are provided at equal angular intervals.

By using two assembly reference holes, positioning at the phase around the rotation axis is performed at the time of assembly. Furthermore, the center of gravity can be determined around the rotation axis by providing dummy holes at equal angular intervals around the rotation axis together with the assembly reference hole. Thereby, low noise and low vibration can be realized.

The dual-rotating scroll compressor according to one aspect of the present invention includes a drive-side scroll member that has a spiral drive side wall body that is rotationally driven by a drive unit and that is disposed on a drive-side end plate; A driven side scroll member having a driven side wall corresponding to the drive side wall, the driven side wall being engaged with the drive side wall to form a compression chamber, and the drive side scroll member A synchronous drive mechanism for transmitting a driving force from the drive-side scroll member to the driven-side scroll member so that the driven-side scroll member rotates at the same angular velocity in the same direction and in the same direction; The positioning pin for positioning the phase around the rotation axis of the drive side scroll member is made of the same material as the drive side wall at the tip of the A positioning pin for positioning the phase around the rotation axis of the driven scroll member is made of the same material as that of the driven sidewall, and / or at the tip of the driven sidewall in the axial direction. Are provided in two places.

By using two positioning pins, positioning of the phase around the rotation axis is performed. Since the locating pin is made of the same material as the wall, the center of gravity can be defined around the rotation axis. Thereby, low noise and low vibration can be realized.

The dual-rotating scroll compressor according to one aspect of the present invention includes a drive-side scroll member that has a spiral drive side wall body that is rotationally driven by a drive unit and that is disposed on a drive-side end plate; A driven side scroll member having a driven side wall corresponding to the drive side wall, the driven side wall being engaged with the drive side wall to form a compression chamber, and the drive side scroll member A synchronous drive mechanism for transmitting a driving force from the drive-side scroll member to the driven-side scroll member so that the driven-side scroll member rotates at the same angular velocity in the same direction and in the same direction; In the surface opposite to the drive side wall, an assembly reference hole into which an assembly pin used at the time of assembly for positioning the phase around the rotation axis of the drive side scroll member is inserted Two points are provided symmetrically with respect to the axis and / or assembled on the surface of the driven end plate opposite to the driven side wall to position the phase around the rotation axis of the driven scroll member. Two assembly reference holes are provided symmetrically with respect to the rotation axis, into which assembly pins used sometimes are inserted.

Since two assembly reference holes are provided on the surface of the end plate opposite to the surface on which the wall is provided, the positioning of the phase around the rotation axis is performed at the time of assembly. Further, since the assembly reference holes are provided symmetrically with respect to the rotation axis, the center of gravity can be defined around the rotation axis. Thereby, low noise and low vibration can be realized.
Further, since the assembly reference hole is provided in the end plate, and there is no need to provide the assembly reference hole in the wall, the position where the assembly reference hole is provided can be arbitrarily determined regardless of the shape of the wall.

Furthermore, in the dual rotation scroll compressor according to one aspect of the present invention, the drive side scroll member has a first drive side end plate and a first drive side wall, and the first drive side scroll member is driven by the drive unit. A drive side scroll portion, and a second drive side scroll portion having a second drive side end plate and a second drive side wall body, wherein a tip end of the first drive side wall body in the axial direction and the second drive side wall body The positioning of the phase about the rotation axis of the drive side scroll member is performed between the tip in the axial direction of the drive scroll member.

Positioning pins and dummy pins are provided at the tip of the drive side wall. In addition, the assembly reference hole and the dummy hole are provided at the tip of the drive side wall body.

Furthermore, in the dual-rotating scroll compressor according to one aspect of the present invention, the driven-side scroll member is provided on one side surface of the driven-side end plate, and a first driven-side wall that engages with the first drive side wall. A second driven side wall body provided on the other side surface of the driven side end plate and meshed with the second drive side wall body, and disposed with the first drive side end plate interposed therebetween; The shaft of the second driven side wall is disposed between the first support member fixed to the tip end side in the axial direction of the side wall and rotating with the first driven side wall, and the second drive side end plate A second support member fixed to the front end side of the second direction and rotated with the second driven side wall, between the first driven side wall and the first support member, and the second driven side wall Between the second support member and the second support member, Phase positioning around the rotation axis of the member is carried out.

Positioning pins and dummy pins are provided between the driven side wall and the support member. In addition, an assembly reference hole or a dummy hole is provided between the driven side wall and the support member.

Further, according to one aspect of the present invention, there is provided a method of assembling a dual-rotating scroll compressor according to the above-mentioned method of assembling a dual-rotating scroll compressor, the step of inserting and positioning the assembly pin in the assembly reference hole. And assembling the drive-side scroll member and / or the driven-side scroll member in a positioned state, and removing the assembly pin.

After positioning and inserting the assembly pin into the assembly reference hole at the time of assembly, remove the assembly pin. Therefore, no pins are inserted into the assembly reference holes and the dummy holes in the assembled rotary scroll compressor.

By positioning the center of gravity of the scroll member on the rotation axis, the generation of noise and vibration can be suppressed as much as possible.

BRIEF DESCRIPTION OF THE DRAWINGS It is the longitudinal cross-sectional view which showed the double-rotation scroll type compressor concerning one Embodiment of this invention. It is the top view which showed the drive side scroll part which concerns on 1st Embodiment. It is a side view in arrow III-III of FIG. It is the top view which showed the drive side scroll part which concerns on 2nd Embodiment. It is a side view which concerns on 2nd Embodiment and corresponds to FIG. It is the top view which showed the drive side scroll part which concerns on 3rd Embodiment. It is a side view which concerns on 3rd Embodiment and corresponds to FIG. It is a rear view of the 1st drive side scroll part concerning a 4th embodiment. It is a rear view of the 2nd drive side scroll part concerning a 4th embodiment.

Hereinafter, an embodiment of the present invention will be described.
First Embodiment
FIG. 1 shows a dual-rotation scroll compressor 1 according to a first embodiment. The double-rotating scroll compressor 1 can be used, for example, as a turbocharger that compresses combustion air (fluid) supplied to an internal combustion engine such as a vehicle engine.

The double-rotating scroll compressor 1 includes a housing 3, a motor (drive unit) 5 housed on one end side of the housing 3, and a drive-side scroll member 70 and a driven-side scroll member housed on the other end side of the housing 3. It has 90 and.

The housing 3 has a substantially cylindrical shape, and includes a motor accommodating portion 3 a that accommodates the motor 5 and a scroll accommodating portion 3 b that accommodates the

scroll members

70 and 90.

Cooling fins 3c for cooling the motor 5 are provided on the outer periphery of the motor housing 3a. A discharge port 3d for discharging compressed air (working fluid) is formed at an end portion of the scroll housing portion 3b. Although not shown in FIG. 1, the housing 3 is provided with an air inlet for drawing air (working fluid).

The motor 5 is driven by supplying power from a power supply source (not shown). The rotation control of the motor 5 is performed by a command from a control unit (not shown). The stator 5 a of the motor 5 is fixed to the inner peripheral side of the housing 3. The rotor 5b of the motor 5 rotates around the drive side rotation axis CL1. The drive shaft 6 extending on the drive side rotation axis line CL1 is connected to the rotor 5b. The drive shaft 6 is connected to the first drive side shaft 7 c of the drive side scroll member 70.

The drive side scroll member 70 includes a first drive side scroll portion 71 on the motor 5 side and a second drive side scroll portion 72 on the discharge port 3 d side.
The first drive side scroll portion 71 includes a first drive side end plate 71a and a first drive side wall 71b.
The first drive side end plate 71a is connected to a first drive side shaft 7c connected to the drive shaft 6, and extends in a direction orthogonal to the drive side rotational axis CL1. The first drive side shaft portion 7 c is provided rotatably with respect to the housing 3 via a first drive side bearing 11 formed as a ball bearing.

The first drive side end plate 71a has a substantially disc shape in a plan view. A plurality of spiral first drive side walls 71b are provided on the first drive side end plate 71a. The first drive side wall bodies 71b are arranged at equal intervals around the drive side rotation axis line CL1.

The second drive side scroll portion 72 includes a second drive side end plate 72a and a second drive side wall 72b. Similar to the first drive side wall 71 b described above, a plurality of second drive side walls 72 b are provided in a spiral shape.
A cylindrical second drive side shaft portion 72c extending in the direction of the drive side rotation axis CL1 is connected to the second drive side end plate 72a. The second drive side shaft portion 72c is provided rotatably with respect to the housing 3 via a second drive side bearing 14 formed as a ball bearing. A discharge port 72d is formed in the second drive side end plate 72a along the drive side rotational axis CL1.

Two sealing members 16 are provided between the second drive side shaft portion 72c and the housing 3 on the tip end side (left side in FIG. 1) of the second drive side shaft portion 72c than the second drive side bearing 14 ing. The two seal members 16 and the second drive-side bearing 14 are disposed at predetermined intervals in the direction of the drive-side rotation axis CL1. A lubricant, for example, a grease which is a semisolid lubricant, is enclosed between the two seal members 16. The number of sealing members 16 may be one. In this case, the lubricant is enclosed between the seal member 16 and the second drive side bearing 14.

The first drive side scroll portion 71 and the second drive side scroll portion 72 are fixed in a state in which the tips (free ends) of the

wall bodies

71 b and 72 b face each other. The fixing of the first drive side scroll portion 71 and the second drive side scroll portion 72 is achieved by fixing a wall fixing bolt (not shown) to a flange portion 73 provided at a plurality of locations in the circumferential direction so as to protrude radially outward. The wall fixing portion 31 is performed.

The top view of the 1st drive side scroll part 71 is shown by FIG. The second drive side scroll unit 71 also has a similar shape. As shown in the figure, a bolt hole 31a into which the wall fixing bolt 31 is inserted is provided at the winding end of the wall 71b. In the present embodiment, since three walls 71 b are provided, wall fixing bolts 31 are provided at three locations.
Positioning pin holes 40a into which the positioning pins 40 are fitted are provided on the side of two of the three bolt holes 31a. A dummy pin hole 41a into which the dummy pin 41 is inserted is provided on the side of the remaining one bolt hole 31a. The dummy pin 41 is made of the same material as the positioning pin 40, but is loosely fitted so as not to position the dummy pin hole 41a.
Two positioning pins 40 and one dummy pin 41 are provided at equal intervals around the drive side rotation axis CL1.

As shown in FIG. 1, in the driven scroll member 90, a driven end plate 90a is located substantially at the center in the axial direction (horizontal direction in the drawing). A discharge through hole (through hole) 90h is formed at the center of the driven end plate 90a, and compressed air flows to the discharge port 72d.
The first driven side wall body 91b is provided on one side surface of the driven side end plate 90a, and the second driven side wall body 92b is provided on the other side surface of the driven side end plate 90a. The first driven side wall body 91b installed on the motor 5 side from the driven side end plate 90a is engaged with the first drive side wall body 71b of the first drive side scroll portion 71, and on the discharge port 3d side from the driven side end plate 90a. The installed second driven side wall 92 b is engaged with the second driving side wall 72 b of the second driving scroll portion 72.

A first support member 33 and a second support member 35 are provided at both ends of the driven scroll member 90 in the axial direction (horizontal direction in the drawing). The first support member 33 is disposed on the motor 5 side, and the second support member 35 is disposed on the discharge port 3 d side.

The first support member 33 is fixed to a tip (free end) on the outer peripheral side of the first driven side wall 91 b by a first support fixing bolt 34, and the second support member 35 is a second driven side wall 92 b. Is fixed by a second support fixing bolt 36 to a tip (free end) on the outer peripheral side of

A shaft portion 33 a is provided on the central axis side of the first support member 33, and the shaft portion 33 a is fixed to the housing 3 via a first support member bearing 37. A shaft portion 35 a is provided on the central axis side of the second support member 35, and the shaft portion 35 a is fixed to the housing 3 via a second support member bearing 38. Thus, the driven scroll member 90 is configured to rotate around the driven rotation axis CL2 via the

support members

33 and 35.

A pin ring mechanism (synchronous drive mechanism) 15 is provided between the first support member 33 and the first drive side end plate 71a. That is, the rolling bearing (ring) is provided on the first drive side end plate 71 a, and the pin member 15 b is provided on the first support member 33. While the driving force is transmitted from the drive-side scroll member 70 to the driven-side scroll member 90 by the pin ring mechanism 15, both

scroll members

70, 90 rotate at the same angular velocity in the same direction.

FIG. 3 shows a side view taken along arrow III-III in FIG. In the first support member 33, first support fixing bolts 34 are provided at three locations. Positioning pin holes 42 a into which the positioning pins 42 are fitted are provided on the side of the two first support fixing bolts 34 among these. A dummy pin hole 43 a into which the dummy pin 43 is inserted is provided on the side of the remaining one first support fixing bolt 34. Although the dummy pin 43 is made of the same material as the positioning pin 42, it is loosely fitted so as not to position the dummy pin hole 43a.
Two positioning pins 42 and one dummy pin 43 are provided at equal intervals around the driven rotation axis CL2.
The second support member 35 has a similar configuration.

The twin-rotating scroll compressor 1 configured as described above operates as follows.
When the drive shaft 6 is rotated about the drive-side rotation axis CL1 by the motor 5, the first drive-side shaft 7c connected to the drive shaft 6 is also rotated, whereby the drive-side scroll member 70 is driven along the drive-side rotation axis CL1. Rotate around. When the drive side scroll member 70 rotates, the drive force is transmitted from the

support members

33 and 35 to the driven side scroll member 90 through the pin ring mechanism 15, and the driven side scroll member 90 rotates around the driven side rotation axis CL2. Do. At this time, when the pin member 15b of the pin ring mechanism 15 moves in contact with the inner circumferential surface of the circular hole, both

scroll members

70, 90 rotate at the same angular velocity in the same direction.
When both scroll

members

70, 90 rotate, the air sucked from the suction port of housing 3 is drawn from the outer peripheral side of both

scroll members

70, 90, and the compression chamber formed by both

scroll members

70, 90 Incorporated into The compression chamber formed by the first drive side wall 71b and the first driven side wall 91b and the compression chamber formed by the second drive side wall 72b and the second driven side wall 92b are separately compressed. Ru. The volume of each compression chamber decreases as it moves toward the center, and the air is compressed accordingly. The air compressed by the first drive side wall 71b and the first driven side wall 91b passes through the discharge through hole 90h formed in the driven side end plate 90a, and the second drive side wall 72b and the second driven side wall 92b. , And the air after merging passes through the discharge port 72d and is discharged from the discharge port 3d of the housing 3 to the outside. The discharged compressed air is led to an internal combustion engine (not shown) and used as combustion air.

According to the present embodiment, the following effects are achieved.
As shown in FIG. 2, by using two positioning pins 40 for the drive-side scroll member 70, positioning of the phase around the drive-side rotation axis CL1 is performed. Further, by providing the dummy pins 41 so as to form equiangular intervals around the drive side rotation axis CL1 together with the positioning pin 40, the center of gravity is determined around the drive side rotation axis CL1.
As shown in FIG. 3, by using two positioning pins 42 for the driven scroll member 90, positioning of the phase about the driven rotation axis CL2 is performed. Further, by providing the dummy pins 43 so as to have equal angular intervals around the driven side rotation axis CL2 together with the positioning pin 42, the center of gravity is determined around the driven side rotation axis CL2.
Thus, low noise and low vibration can be realized.

Second Embodiment
The second embodiment is different from the first embodiment in that a positioning pin is not provided, and the other configuration is the same, so only the difference will be described.
As shown in FIG. 4, assembly reference holes 44 a are respectively provided on the sides of the three wall fixing bolts 31. These three assembly reference holes 44a are provided at equal angular intervals around the drive side rotation axis CL1. The assembly reference hole 44 a is a hole used to insert an assembly pin when assembling the first drive side scroll portion 71 and the second drive side scroll portion 72. Since the positioning around the drive side rotation axis CL1 is determined by the two assembly pins, one of the three assembly reference holes 44a becomes a dummy hole not used at the time of assembly. However, the three assembly reference holes 44a have the same shape.

When assembling the first drive side scroll portion 71 and the second drive side scroll portion 72, first, the assembly pins are inserted into the two assembly reference holes 44a, and positioning is performed by combining the two

scroll portions

71 and 72. . And both scroll

parts

71 and 72 are fixed using wall fixing bolt 31. Thereafter, the assembly pins are removed to complete the assembly of the

scrolls

71 and 72.

As shown in FIG. 5, assembly reference holes 45a are provided on the sides of the three first support fixing bolts 34, respectively. These three assembly reference holes 45a are provided at equal angular intervals around the driven side rotation axis CL2. The assembly reference hole 45 a is a hole used to insert an assembly pin when assembling the first support member 33 and the driven scroll member 90. Since positioning about the driven side rotational axis CL2 is determined by two assembly pins, one of the three assembly reference holes 45a becomes a dummy hole not used at the time of assembly. However, the three assembly reference holes 45a have the same shape.
The second support member 35 has a similar configuration.

When assembling the driven scroll member 90 and the first support member 33, first, insert the assembly pins into the two assembly reference holes 45a, and combine the driven scroll member 90 and the first support member 33 for positioning. Do. Then, the driven scroll member 90 and the first support member 33 are fixed using the first support fixing bolt 34. Thereafter, the assembly pin is removed, and the assembly of the driven scroll member 90 and the first support member 33 is completed. The assembly of the driven scroll member 90 and the second support member 35 is similarly performed.

According to the present embodiment, the following effects are achieved.
By using the

assembly reference holes

44a and 45a at two positions, positioning of the phase around the rotation axes CL1 and CL2 is performed at the time of assembly. Further, by providing dummy holes (same holes as the

assembly reference holes

44a, 45a) so as to form equiangular intervals around the rotation axes CL1, CL2 together with the

assembly reference holes

44a, 45a, the center of gravity is set around the rotation axes CL1, CL2. It can be determined. Thereby, low noise and low vibration can be realized.

Third Embodiment
The third embodiment is different from the first embodiment in the configuration of the positioning pin and the other configuration is the same, so only the difference will be described.
As shown in FIG. 6, positioning pins 40 are provided on the sides of two of the three wall fixing bolts 31 as in the first embodiment. However, the positioning pin 40 is not provided on the side of the remaining one of the wall fixing bolts 31 and no hole for the pin is provided. Further, the positioning pin 40 is made of the same material as the drive side scroll member 70. That is, when the drive side scroll member 70 is an aluminum alloy, the positioning pin 40 is also an aluminum alloy.

As shown in FIG. 7, positioning pins 42 are provided on the sides of two of the three first support fixing bolts 34 in the same manner as in the first embodiment. However, the positioning pin 42 is not provided on the side of the remaining one first support fixing bolt 34, and the hole for the pin is not provided. Further, the positioning pin 42 is made of the same material as the driven scroll member 90. That is, when the driven scroll member 90 is an aluminum alloy, the positioning pin 42 is also an aluminum alloy.

According to the present embodiment, the following effects are achieved.
By using two

positioning pins

40 and 42, positioning of the phase around the rotation axes CL1 and CL2 is performed. Since the positioning pins 40 and 42 are made of the same material as the

scroll members

70 and 90, the center of gravity can be defined around the rotation axes CL1 and CL2. Thereby, low noise and low vibration can be realized.

Fourth Embodiment
The fourth embodiment is different from the first embodiment in that positioning is performed at the end of the

wall

71b, 72b, 91b and 92b, but positioning is performed using an end plate. The other configurations are the same, so only the differences will be described.
As shown in FIG. 8A, the assembly reference hole 46a sandwiches the drive side rotation axis line CL1 on the surface opposite to the surface on which the wall 71b of the end plate 71a of the first driven scroll portion 71 is provided. Two are provided. Three bolt holes 31a are provided in the first driven scroll portion 71, but the positioning pin holes 40a and the dummy pin holes 41a as in the first embodiment are not provided on the side of the bolt holes 31a. In the figure, reference numeral 15b1 denotes a pin hole into which the pin member 15b shown in FIG. 1 is inserted.

As shown in FIG. 8B, the assembly reference hole 46a sandwiches the drive side rotation axis CL1 on the surface opposite to the surface on which the wall 72b of the end plate 72a of the second driven scroll portion 72 is provided. Two are provided. Although three bolt holes 31a are provided in the second driven side scroll portion 72, the positioning pin holes 40a and the dummy pin holes 41a as in the first embodiment are not provided on the side of the bolt holes 31a.

When assembling the first drive side scroll portion 71 and the second drive side scroll portion 72, first, an assembly pin is inserted into each of the two assembly reference holes 46a, and positioning is performed by combining both the scroll portions 71 and 72 I do. And both scroll

parts

scrolls

71 and 72.

According to the present embodiment, the following effects are achieved.
Since two assembly reference holes 46a are provided on the surface of the

end plates

71a and 72a opposite to the surface on which the

walls

71b and 72b are provided, positioning of the phase around the rotation axis CL1 is performed at the time of assembly. Further, since the assembly reference holes 46a are provided symmetrically with respect to the rotation axis CL1, the center of gravity can be determined around the rotation axis CL1. Thereby, low noise and low vibration can be realized.
In addition, since the assembly reference holes 46a are provided in the

end plates

71a and 72a and there is no need to provide the assembly reference holes in the

walls

71b and 72b, the positions for providing the assembly reference holes are irrespective of the shapes of the

walls

71b and 72b. It can be set arbitrarily.

In addition, although the case where

wall body

71b, 72b, 91b, 92b was made into three lines was demonstrated as an example in each embodiment mentioned above, this invention is not limited to this. The present invention is also applicable to three or more, preferably odd-numbered scroll compressors in which positioning pins can not be provided symmetrically with respect to the rotation axis.

In the embodiment described above, a dual-rotating scroll compressor is used as the supercharger, but the present invention is not limited to this, and any compressor that compresses fluid can be widely used. For example, it can also be used as a refrigerant compressor used in an air conditioning machine. Moreover, it is also possible to apply the scroll type compressor 1 of this invention to the air control apparatus which utilized the force of the air as a brake system for rail vehicles.

1 Double-Rotating Scroll Type Compressor 3 Housing 3a Motor Housing 3b Scroll Housing (Housing)

3c Cooling fin

3d Discharge port 5 Motor (drive part)
5a Stator 5b Rotor 6 Drive Shaft 7c First Drive Side Shaft 11 First Drive Side Bearing 14 Second Drive Side Bearing 15 Pin Ring Mechanism (Synchronous Drive Mechanism)
15b Pin member 16 Seal member 31 Wall fixing bolt (wall fixing portion)
31a bolt hole 33 first support member 33a shaft portion 34 first support fixing bolt 35 second support member 35a shaft portion 36 second support fixing bolt 37 first support member bearing 38 second support member bearing 40 positioning pin 40a positioning Pin hole 41 Dummy pin 41a Dummy pin hole 42 Positioning pin 42a Positioning pin hole 43 Dummy pin hole 44a Assembly standard hole 45a Assembly standard hole 46a Assembly standard hole 70 Drive side scroll member 71 1st drive side scroll portion 71a 1st drive side end plate 71b first drive side wall body 72 second drive side scroll portion 72a second drive side end plate 72b second drive side wall body 72c second drive side shaft portion 72d discharge port 73 flange portion 90 follower side scroll member 90a follower side end plate 90h Discharge through hole (through hole)
91b first driven side wall 92b second driven side wall CL1 drive side rotation axis line CL2 driven side rotation axis line

Claims

A drive side scroll member having a spiral drive side wall body rotationally driven by the drive unit and disposed on the drive side end plate;
A driven scroll member disposed on a driven end plate and having a driven side wall corresponding to the drive side wall, the driven side wall being engaged with the drive side wall to form a compression chamber;
A synchronous drive mechanism for transmitting driving force from the drive-side scroll member to the driven-side scroll member so that the drive-side scroll member and the driven-side scroll member rotate at the same angular velocity in the same direction;
Equipped with
At the tip in the axial direction of the drive side wall body, positioning pins for positioning the phase around the rotation axis of the drive side scroll member are provided at two positions around the rotation axis, and the positioning pins are equiangularly around the rotation axis One or more dummy pins provided at intervals,
And / or
At the tip of the driven side wall in the axial direction, positioning pins for positioning the phase around the rotation axis of the driven scroll member are provided at two positions around the rotation axis, and the positioning pins are equiangularly around the rotation axis A double-turn scroll compressor in which one or more dummy pins provided at intervals are provided.
A drive side scroll member having a spiral drive side wall body rotationally driven by the drive unit and disposed on the drive side end plate;
A driven scroll member disposed on a driven end plate and having a driven side wall corresponding to the drive side wall, the driven side wall being engaged with the drive side wall to form a compression chamber;
A synchronous drive mechanism for transmitting driving force from the drive-side scroll member to the driven-side scroll member so that the drive-side scroll member and the driven-side scroll member rotate at the same angular velocity in the same direction;
Equipped with
At the tip of the drive side wall in the axial direction, two assembly reference holes are provided around the rotation axis, into which assembly pins used for assembly are inserted in order to position the phase around the rotation axis of the drive scroll member. Dummy holes provided at equal angular intervals around the rotation axis along with the assembly reference holes are provided at one or more locations;
And / or
At the tip of the driven side wall in the axial direction, two assembly reference holes are provided around the rotation axis, into which assembly pins used for assembly are set in order to position the phase of the driven scroll member around the rotation axis. A dual-rotating scroll compressor comprising at least one dummy hole provided at equal angular intervals around the rotation axis along with the assembly reference hole.
A drive side scroll member having a spiral drive side wall body rotationally driven by the drive unit and disposed on the drive side end plate;
A driven scroll member disposed on a driven end plate and having a driven side wall corresponding to the drive side wall, the driven side wall being engaged with the drive side wall to form a compression chamber;
A synchronous drive mechanism for transmitting driving force from the drive-side scroll member to the driven-side scroll member so that the drive-side scroll member and the driven-side scroll member rotate at the same angular velocity in the same direction;
Equipped with
At the tip in the axial direction of the drive side wall, positioning pins for positioning the phase around the rotation axis of the drive side scroll member are made of the same material as the drive side wall and provided at two positions around the rotation axis.
And / or
Positioning pins for positioning the phase around the rotation axis of the driven scroll member are made of the same material as the driven side wall and provided at two positions around the rotation axis at the tip of the driven side wall in the axial direction. Double-rotating scroll compressor.
A drive side scroll member having a spiral drive side wall body rotationally driven by the drive unit and disposed on the drive side end plate;
A driven scroll member disposed on a driven end plate and having a driven side wall corresponding to the drive side wall, the driven side wall being engaged with the drive side wall to form a compression chamber;
A synchronous drive mechanism for transmitting driving force from the drive-side scroll member to the driven-side scroll member so that the drive-side scroll member and the driven-side scroll member rotate at the same angular velocity in the same direction;
Equipped with
In the surface of the drive side end plate opposite to the drive side wall, an assembly reference hole into which an assembly pin used at the time of assembly for positioning the phase around the rotation axis of the drive side scroll member is inserted Are provided symmetrically with respect to
And / or
On a surface of the driven end plate opposite to the driven side wall, an assembly reference hole into which an assembly pin used at the time of assembly for positioning the phase of the driven scroll member around the rotation axis is inserted Double-rotating scroll compressor provided in two places symmetrically with respect to.
The drive side scroll member has a first drive side end plate and a first drive side wall body, and a first drive side scroll portion driven by the drive unit, a second drive side end plate and a second drive side wall A second drive side scroll portion having a body;
5. The positioning of the phase around the rotation axis of the drive side scroll member is performed between the tip of the first drive side wall in the axial direction and the tip of the second drive side wall in the axial direction. The twin-rotating scroll compressor according to any of the above.
The driven-side scroll member is provided on one side of the driven-side end plate, and is provided on a first driven-side wall that meshes with the first drive-side wall and on the other side of the driven-side end plate. And a second driven sidewall meshing with the sidewall.
A first support member which is disposed with the first drive side end plate interposed therebetween, is fixed to a tip end side in the axial direction of the first driven side wall body, and rotates with the first driven side wall body; And a second support member disposed via a side end plate and fixed to an axial tip end side of the second driven side wall body and rotated with the second driven side wall body,
Positioning of the phase around the rotation axis of the driven scroll member is performed between the first driven sidewall and the first support member, and between the second driven sidewall and the second support member. The dual-rotating scroll compressor according to claim 5, which is
A method of assembling a twin-rotating scroll compressor according to claim 2 or 4,
Inserting and positioning the assembly pin in the assembly reference hole;
Assembling the drive side scroll member and / or the driven side scroll member in a positioned state;
Removing the assembly pin;
A method of assembling a twin-rotating scroll compressor comprising: