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Scroll compressor

A compressor and scroll technology, applied in the field of scroll compressors, can solve the problems of reduced life and wear of the synchronous drive mechanism, and achieve the effects of reducing wear, reducing noise, and mitigating impact.

Inactive Publication Date: 2021-01-05
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the pin member transmits power, wear occurs between the contacting member and the synchronous drive mechanism, which reduces the life of the synchronous drive mechanism.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0047] Hereinafter, a first embodiment according to the present invention will be described with reference to the drawings.

[0048] figure 1A longitudinal section of the scroll compressor 1 is shown. As shown in the figure, the scroll compressor 1 includes a drive unit 3 and a compression mechanism unit 5 in a casing 9 .

[0049] The drive unit 3 includes a motor 7 accommodated in a small-diameter portion 9 a of the housing 9 . Radiation fins are provided on the outer periphery of the small-diameter portion 9 a of the housing 9 . The electric motor 7 includes a stator 11 fixed to the housing 9 side, and a rotor 13 that rotates around a drive-side central axis L1 inside the stator 11 . The rotor 13 is fixed to the outer periphery of the rotating shaft 15 .

[0050] Both ends of the rotating shaft 15 are supported by bearings 17 and 19 . One end of the rotating shaft 15 ( figure 1 Middle left end) is connected to the shaft portion 20a of the driving scroll member 20 . ...

no. 2 approach

[0073] Next, a twin-scroll compressor according to a second embodiment of the present invention will be described. The pin ring mechanism of the present embodiment is different from the first embodiment, and the others are the same, so the pin ring mechanism will be described below.

[0074] Such as Figure 7 and Figure 8 As shown, the pin ring mechanism 26' includes an O-ring (intermediate member, elastic member) 38 provided on the outer periphery of the pin member 30. In addition, in this embodiment, the bushing 36 described in the first embodiment is not provided.

[0075] The O-ring 38 is provided so as to protrude outward from the outer peripheral surface of the pin member 30 in a no-load state. Thereby, even in a no-load state, the inner ring 34b is always in contact with the inner periphery of the inner ring 34b to rotate the inner ring 34b.

[0076] Such as Figure 8 As shown, when power is transmitted between the pin member 30 and the inner ring 34b, the O-ring ...

no. 3 approach

[0079] Next, a twin-scroll compressor according to a third embodiment of the present invention will be described. The pin fixing structure of the pin ring mechanism of this embodiment is different from each of the above-mentioned embodiments. Others are the same, so the pin-ring mechanism will be described below.

[0080] Such as Figure 9 As shown, the pin member 30 is made of metal, and is fixed to the outer peripheral wall portion 22d of the driven scroll member 22 opposite to the end plate 20b of the driving scroll member 20 . One end of the pin member 30 is rotatably fixed to the outer peripheral wall portion 22d of the driven scroll member 22 via a ball bearing (rolling bearing) 37 around the axis. Thus, since the pin member 30 is rotatably supported by the ball bearing 37, even if the pin member 30 contacts the side wall of the bush 36 where the notch 36a is formed, it rolls without generating large friction.

[0081] In addition, in this embodiment, there are two ba...

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Abstract

A pin ring mechanism (26) is provided for supporting the driving scroll member and the driven scroll member so that the driving scroll member and the driven scroll member orbit and orbit relative to each other. The pin-ring mechanism (26) includes: a pin member (30); an inner ring (34b) in contact with the pin member (30), a plurality of balls (34c) rolling relative to the inner ring (34b), and a retainer (34d) a ring member (34); and a bush arranged on the inner periphery of the inner ring (34b) and rotated together with the inner ring (34b) by receiving the component force in the circumferential direction of the inner ring (34b) from the pin member (30) (36).

Description

technical field [0001] This invention relates to scroll compressors. Background technique [0002] Conventionally, a twin-rotation scroll compressor is known as one form of the scroll compressor (see Patent Document 1). This twin-rotating scroll compressor includes a driving scroll and a driven scroll that rotates synchronously with the driving scroll. The amount of eccentric radius of gyration of the rotating drive shaft, so that the drive shaft and the driven shaft rotate in the same direction and at the same angular velocity. In addition, a synchronous drive mechanism is provided to transmit a driving force from the driving scroll to the driven scroll so that the driving scroll and the driven scroll rotate in the same direction at the same angular velocity. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent No. 4556183 [0006] The problem to be solved by the invention [0007] When a pin-ring mechanism including a pi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/02
CPCF01C1/0215F04C18/0215F04C18/0246F04C18/023
Inventor 平田弘文伊藤隆英竹内真实山下拓马北口惠太
Owner MITSUBISHI HEAVY IND LTD
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