JPH11270473A - Assembling method and device for scroll compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make easily and accurately the alignment of stationary scrolls with oscillating scrolls of a scroll compressor. SOLUTION: Stationary scrolls 33 are pressed from one direction of the R-direction in the condition that stationary scrolls 33 and oscillating scrolls are in engagement and rotation of a rotation axis 26 is prohibited, and a supporting frame 27 and the stationary scrolls 33 are rotated in synchronization in the θ-direction while the lap of each stationary scroll 33 is pressed to the lap of oscillating scroll. The center coordinates of the stationary scrolls 33 is determined from the correlation between the motion in R-direction of the stationary scrolls 33 in case 360-deg. rotation is made and the rotating angle in the θ-direction, and the stationary scrolls 33 are fastened by bolts to the supporting frame 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling method and apparatus for assembling a fixed scroll and an orbiting scroll of a scroll type compressor mounted on, for example, an air conditioning / refrigeration apparatus.

[0002]

2. Description of the Related Art Conventionally, a method of assembling a scroll type compressor is disclosed in Japanese Patent Application Laid-Open No. 57-193793.
The oscillating scroll and fixed scroll have positioning holes,
The positioning was performed by inserting a pin into this hole. However, in such a method, there is a problem that the processing accuracy of each scroll affects the performance, and the centering of both scrolls cannot be accurately performed depending on the processing accuracy.

In Japanese Patent Application Laid-Open No. 2221693/1990, an XY table, a pressing device in the X and Y directions, and a position detector are used and fixed to the oscillating scroll wrap while rotating the rotating shaft by 90 degrees. The scroll wraps were pressed against each other, and each was positioned for clearance.

[0004]

However, such a method requires adjustment in XY coordinates, complicating the processing, and measuring at 90-degree intervals, which limits the improvement in accuracy. Was.

Accordingly, the present invention provides an assembling method and apparatus capable of easily and accurately aligning a fixed scroll and an orbiting scroll of a scroll compressor.

[0006]

According to a first aspect of the present invention, there is provided a method of assembling a scroll type compressor, wherein a fixed scroll and an orbiting scroll are engaged with each other, and rotation of a rotary shaft is prohibited.
Pressing the fixed scroll from one direction in the R direction, rotating the support frame and the fixed scroll in synchronization with the θ direction while pressing the fixed scroll wrap against the swing scroll wrap, and rotating the fixed scroll 360 degrees. The center coordinates of the fixed scroll are determined from the correlation between the movement in the R direction and the rotation angle in the θ direction, and the fixed scroll is bolted to the support frame.

According to a second aspect of the present invention, in the method for assembling a scroll compressor, the fixed scroll and the orbiting scroll are engaged with each other, and the fixed scroll is pressed from one direction in the R direction while the rotation of the rotating shaft is prohibited. While pressing the fixed scroll wrap against the orbiting scroll wrap, the supporting frame and the fixed scroll are rotated in synchronization with the θ direction, and
The clearance in the R direction between the fixed scroll wrap and the orbiting scroll wrap when rotated by 0 degrees is determined over the entire circumference, and the center coordinates of the fixed scroll are determined so that the clearance in the R direction is substantially equal. The fixed scroll is bolted to the support frame.

According to a third aspect of the present invention, there is provided a scroll compressor assembling apparatus, comprising: a shaft fixing device for fixing a rotating shaft; a first rotary table rotating in the θ direction while holding a support frame; A second rotary table that is free to move in one direction and rotates in the θ direction in synchronization with the first rotary table while holding the fixed scroll,
A pressing device that presses the second rotary table in one direction of the R direction; a detecting device that detects the movement of the second rotary table in the R direction; And a control device for determining the center coordinates of the fixed scroll from the correlation with the rotation angle.

According to a fourth aspect of the present invention, there is provided an assembling apparatus for a scroll compressor, comprising: a shaft fixing device for fixing a rotating shaft; a first rotary table rotating in the θ direction while holding a support frame; A second rotary table that is free to move in one direction and rotates in the θ direction in synchronization with the first rotary table while holding the fixed scroll,
A pressing device for pressing the second rotary table in one direction of the R direction, and a movement in the R direction of the second rotary table, the clearance in the R direction of the fixed scroll wrap and the swing scroll wrap in the R direction is set to the entire circumference. A detection device for detecting across;
And a control device for determining the center coordinates of the fixed scroll so that the clearance in the R direction detected by the detection device is substantially equal.

When the support frame and the fixed scroll are synchronously rotated with the rotating shaft fixed, and when the fixed scroll and the orbiting scroll have different cores, the fixed scroll and the orbiting scroll are engaged by the relative revolution of the orbiting scroll. The fixed scrolls will move as much as the laps come into contact with each other and the center is shifted.

According to the present invention, the fixed scroll and the orbiting scroll are engaged with each other, and the fixed scroll is pressed from one direction in the R direction in a state where the rotation of the rotating shaft is prohibited, so that the wrap of the fixed scroll is rotated by the orbiting scroll. The support frame and the fixed scroll are rotated in the θ direction while being pressed against the wrap, and the side clearance between the fixed scroll wrap and the oscillating scroll wrap when rotated 360 degrees is obtained over the entire circumference. Therefore, the center position of the fixed scroll can be determined so that the side clearances at all angles are substantially equal only by rotating the support frame and the fixed scroll once.

As a result, the centering of both scrolls can be quickly performed, and the processing can be simplified because the scrolling is only performed in one direction of the R direction. Further, the clearance can be controlled in all phases of 360 degrees, and more accurate centering can be performed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view of an assembly device for a scroll compressor according to the present invention, and FIG. 2 is a cross-sectional view of a scroll compression element of a horizontal scroll compressor to which the present invention is applied.

Referring first to FIG.
Reference numeral 3 is driven by a rotating shaft 26 of an electric element (not shown). Reference numeral 27 denotes a support frame that supports the scroll compression element 23, and the rotating shaft 26 passes through the center of the support frame 27 and is rotatably supported.

The rotating shaft 26 is rotatably supported at one end by a bearing portion 28 of the support frame 27. The end of the rotating shaft 26 passing through the support frame 27 has a center. Is formed with a pin (crank) 29 provided eccentrically with respect to the axis of the rotating shaft 26. An orbiting scroll 30 is connected to the pin portion 29.

The orbiting scroll 30 has a boss hole 31 which is inserted into the center of the rear surface of a disk-shaped end plate made of aluminum or aluminum alloy and is connected thereto.
And a spiral wrap 32 formed on the surface of the end plate
And

A fixed scroll 33 is connected to the support frame 27 by bolts 24. The fixed scroll 33 is also formed of a disk-shaped end plate made of aluminum or an aluminum alloy, similarly to the orbiting scroll 30, and a plurality of compression chambers are alternately positioned on the end plate of the oscillating scroll 30 on the end plate. A spiral wrap 35 forming 34 is formed.

Reference numeral 48 denotes an Oldham ring, which is interposed between the support frame 27 and the orbiting scroll 30 to prevent the orbiting scroll 30 from rotating with respect to the fixed scroll 33 by the rotation of the rotating shaft 26. It revolves around a circular orbit.

Next, the assembling apparatus 1 shown in FIG. 1 is located at the lowermost position and is movable in one direction of R (radial direction of scroll), and is rotatable on the movable table 2. And a fixed claw 5 provided on the upper surface of the rotary table 4 and driven by a motor 6 above the rotary table 4. Another rotary table 7
And a fixed claw 8 provided on the lower surface of the turntable 7
A support block 9 for rotatably supporting the rotary table 7, a shaft fixing device 10 attached to the center of the upper surface of the support block 9, an elevating device 11 for vertically moving the support block 9, and a rotary table 4 A pressing drive device 12 for pressing in one direction, a pressing device 13 located on the opposite side of the pressing drive device 12 with the rotary table 4 interposed therebetween,
Detecting device 14 for detecting movement of rotary table 4 in the R direction
, A database 15 and a control device 16.

Reference numeral 17 denotes a through hole formed in the center of the support block 9 and a through hole through which the rotary shaft 26 passes, and reference numeral 18 denotes a bolt hole formed in the moving table 2.

First, the wrap 32 of the orbiting scroll 30
The fixed scroll 33 is temporarily fixed to the support frame 27 by bolts 24 with the bolts loosened. Then, the fixed scroll 33 is set on the rotary table 4 with the elevating device 11 raised, and fixed with the fixed claws 5. Next, the lifting / lowering device 11 is lowered, and the rotating shaft 26 is inserted into the through hole 17 so that the shaft fixing device 1
At 0, the support frame 27 is fixed to the lower surface of the turntable 7 with the fixing claws 8 in a state where the rotation shaft 26 is not allowed to rotate.

Next, the pressing device 1 is controlled by the control device 16.
2, the rotary table 4 is pressed from one direction in the R direction. In this state, the control device 16 causes the rotary tables 4 and 7 to rotate once (360 degrees) in synchronization with the θ direction by the motors 3 and 6. That is, by pressing from one direction of the R direction, the fixed scroll 33 and the orbiting scroll 3
Both laps 3 regardless of whether the 0 cores are different
2 and 35 are in contact with each other, so that the clearance (side clearance) in the R direction of both laps becomes zero.
The fixed scroll 33 moves in the R direction.

The position in the R direction with respect to the rotational position in the θ direction during one rotation is stored in the database 15 as R-θ coordinates. Then, the control device 16 determines the correlation of R-θ at all angles from 0 to 360 degrees based on the data in the database 15 so that the side clearances at all angles are substantially equal. The center coordinates of the fixed scroll 33 are calculated.

In the method and apparatus of the present embodiment, the position where the side clearance becomes zero (both laps abut) can be known over the entire circumference (360 degrees) from the correlation of R-θ. The trajectory is a perfect circle if the clearance is uniform, but is usually an ellipse or a distorted circle. This is because not only the simple misalignment but also the influence of factors such as the degree of contour of the involute of the wrap of both scrolls and the magnitude of the eccentricity (the magnitude of the clearance) is included.

However, it is possible to obtain appropriate coaxial coordinates (centering positions) that make the side clearance substantially uniform at all angles from this locus. Also, the size of the side clearance itself can be obtained from the magnitude of the trajectory.

When the centering position of the fixed scroll 33 is determined, the fixed scroll 33 is fastened to the support frame 27 with the bolt 24 at the position of the rotation angle.

As described above, the fixed scroll 33 and the orbiting scroll 30 are engaged with each other, and while the rotation of the rotary shaft 26 is prohibited, the fixed scroll 33 is pressed from one direction in the R direction, and the wrap 35 of the fixed scroll 33 is moved. The supporting frame 27 is pressed against the wrap 32 of the orbiting scroll 30.
And the fixed scroll 33 are rotated in synchronization with the θ direction,
Since the side clearance between the wrap 35 of the fixed scroll 33 and the wrap 32 of the orbiting scroll 30 when rotated 360 degrees is determined over the entire circumference, the support frame 27 and the fixed scroll 33 need only be rotated once. Thus, the center position of the fixed scroll 33 can be determined so that the side clearances at all angles are substantially equal.

As a result, both scrolls 30 and 3 can be quickly moved.
Since the centering of No. 3 can be performed and only the pressing in one direction of the R direction is performed, the processing in the control device 16 is also simplified. Further, the clearance can be managed in all phases of 360 degrees, and more accurate centering can be performed.

In the embodiment, the support frame 27 and the fixed scroll 33 are vertically overlapped with the rotary shaft 26 as the upper side, and the centering is performed. However, the present invention is not limited to this. good.

[0030]

As described above in detail, according to the present invention, the fixed scroll and the orbiting scroll are engaged with each other, and the fixed scroll is pressed from one direction in the R direction while the rotation of the rotating shaft is prohibited. The support frame and the fixed scroll are rotated in synchronization with the θ direction while pressing the wrap of the fixed scroll on the oscillating scroll wrap, and the side clearance between the fixed scroll wrap and the oscillating scroll wrap when rotated by 360 degrees is completely reduced. Since the determination is made over the circumference, the center position of the fixed scroll can be determined only by rotating the support frame and the fixed scroll once.

As a result, the centering of both scrolls can be performed quickly, and the processing can be simplified since the scrolling is only performed in one direction of the R direction. Further, the clearance can be controlled in all phases of 360 degrees, and more accurate centering can be performed.

[Brief description of the drawings]

FIG. 1 is a sectional view of an assembly device for a scroll compressor according to the present invention.

FIG. 2 is an enlarged sectional view of a scroll compression element of the scroll compressor to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Assembling apparatus 2 Moving table 4, 7 Rotary table 3, 6 Motor 12 Press drive device 14 Detecting device 16 Control device 23 Scroll compression element 26 Rotating shaft 27 Support frame 28 Bearing part 29 Pin part 30 Swing scroll 31 Boss hole part 32 , 35 lap 33 fixed scroll 34 compression chamber

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Kenzo Matsumoto 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Takehiro Nishikawa 2-chome Keihanhondori, Moriguchi-shi, Osaka No. 5-5 Sanyo Electric Co., Ltd. (72) Inventor Takashi Sato 2-5-5 Keihan Hondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (4)

[Claims] 1. A fixed scroll and an orbiting scroll are engaged with each other, and in a state where rotation of a rotating shaft is prohibited, the fixed scroll is pressed from one direction in an R direction to press a fixed scroll wrap against the orbiting scroll wrap. While rotating the support frame and the fixed scroll in the θ direction while rotating the support frame and the fixed scroll by 360 degrees, R
A method of assembling a scroll compressor, comprising: determining a center coordinate of the fixed scroll from a correlation between a movement in a direction and a rotation angle in a θ direction, and bolting the fixed scroll to the support frame. 2. The fixed scroll and the orbiting scroll are engaged with each other, and the fixed scroll is pressed from one direction in the R direction while the rotation of the rotating shaft is prohibited, and the wrap of the fixed scroll is pressed against the wrap of the orbiting scroll. While rotating the supporting frame and the fixed scroll in the θ direction in synchronization with each other, the clearance in the R direction between the fixed scroll wrap and the orbiting scroll wrap when rotated by 360 degrees is obtained over the entire circumference. A method of assembling a scroll compressor, comprising determining center coordinates of a fixed scroll so that clearances in the R direction are substantially equal, and bolting the fixed scroll to the support frame. 3. A shaft fixing device for fixing a rotating shaft, a first rotary table that rotates in the θ direction while holding a support frame, and is free to move in one direction of R direction and fixed. A second rotary table that rotates in the θ direction in synchronization with the first rotary table while holding a scroll, a pressing device that presses the second rotary table in one direction of the R direction, And a control device for determining the center coordinates of the fixed scroll from a correlation between the movement in the R direction detected by the detection device and the rotation angle in the θ direction. A scroll type compressor assembling apparatus. 4. A shaft fixing device for fixing a rotating shaft, a first rotary table that rotates in a θ direction while holding a support frame, and is free to move in one direction of R direction and fixed. A second rotary table that rotates in the θ direction in synchronization with the first rotary table while holding a scroll, a pressing device that presses the second rotary table in one direction of the R direction, A detection device for detecting the clearance in the R direction of the fixed scroll wrap and the orbiting scroll wrap in the R direction from the movement of the rotary table in the R direction, and a clearance in the R direction detected by the detection device. A control device for determining the center coordinates of the fixed scroll so as to be substantially uniform.