JP2719013B2 - Scroll compressor - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scroll compressor comprising a fixed scroll and an orbiting scroll, and more particularly to a scroll compressor having an improved tip seal spring provided on a sliding surface of the scroll blade tip. About the machine.

2. Description of the Related Art As shown in FIG. 3, a conventional scroll compressor is provided with a sealing property of each sliding portion on a sliding surface at the tip of each blade of a fixed scroll and an orbiting scroll 4 constituting a compression mechanism. A sealing member is provided for the purpose (only the orbiting scroll side is shown). Generally, as these seal members, a groove 18 is provided on the sliding surface at the tip of each blade, and a chip seal 14 is attached to this groove. Further, a spring member 15 is provided between the groove and the tip seal to press the tip seal against the sliding surface to further enhance the sealing performance.

The spring member needs to uniformly press the tip seal against the sliding surface, which requires cutting and raising at appropriate intervals along the center line as shown in FIG. A cut-and-raised spring is suitable. However, since the scroll of the fixed scroll and the scroll of the orbiting scroll are mirror-contrast with each other, the shape of the cut-and-raised spring is the same, but it is necessary to make the cut-and-raised direction of the spring member upside down. is there. That is, the fixed scroll and the orbiting scroll must be created separately. Therefore,
It takes time to create a spring member. The present invention
An object of the present invention is to reduce the time and effort for creating the above-mentioned spring member, and to create a scroll compressor more efficiently.

Means for Solving the Problems In order to solve the above problems, the present invention creates a spring member for either a fixed scroll or an orbiting scroll and uses it as a spring for a tip seal of the other scroll.

Function Even if the cut-and-raised direction of one of the cut-and-raised springs is opposite to that of the other, the force required to press the tip seal against the sliding surface is sufficient. Absent.

An embodiment of the present invention will be described below with reference to the drawings. 1 and 2, a compression mechanism 2 includes a fixed scroll 3, a revolving scroll 4 having revolving blades 6 that mesh with the fixed scroll 3 to form a plurality of compression work spaces 5, and a rotation of the revolving scroll 4. And a turning drive shaft 8 provided on the opposite side to the turning blade 6 is fitted into an eccentric bearing 10 formed at one end of a crankshaft 9. Compression mechanism 2
The refrigerant sucked from the suction port 11 is compressed in the compression work space 5 and discharged from the discharge port 12. In FIG. 2, the cut-and-raised direction of the cut-and-raised spring for the tip seal is such that the orbiting scroll side is on the groove side of the sliding surface at the tip of the orbiting blade, and the fixed scroll side is on the tip seal side. The directions may be opposite to each other. Next, the operation of the embodiment of the present invention will be described. The refrigerant sucked from the suction pipe 11 of the compression mechanism 2
It is sequentially compressed in the compression work space 5 and discharged from the discharge port 12. At this time, leakage of the compressed refrigerant tends to occur in the axial direction from the sliding surface of the fixed scroll 3 or the orbiting scroll 4 at the tip of the blade. However, the sliding surfaces at the blade tips of the scrolls 3 and 4 are arranged along these scroll directions.
Grooves 18, 19 are provided, and these grooves 18, 19 are pressed together with the chip seals 14, 16 against a sliding surface.
15 and 17 are attached so that the leak is sealed.

Advantageous Effects of the Invention As described above, according to the present invention, the cut-and-raised directions of the cut-and-raised springs that press the tip seals provided on the sliding surfaces of the fixed scroll and the orbiting scroll at the tips of the respective blades are different from each other. Has the same sealing properties as the conventional case in the same direction, and can reduce the time and effort required to produce this spring member, leading to a reduction in cost.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a compressor according to an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are exploded perspective views of a seal portion of the compressor.
FIG. 3 is an exploded perspective view of a sealing portion of a conventional compressor, and FIGS. 4 (a) and 4 (b) are exploded perspective views of a main part of a conventional example. 1 ... electric motor, 2 ... compression mechanism, 3 ... fixed scroll, 4 ... orbiting scroll, 7 ... Oldham ring, 14
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 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Jiro Yuda 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. Inside (72) Inventor Shuichi Yamamoto 1006 Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. Inventor Shigeru Muramatsu 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Yasushi Aiba 1006 Okadoma Kadoma, Kadoma City Osaka Pref. -187786 (JP, A)

Claims (1)

(57) [Claims] 1. A groove is formed in the sliding surface at the tip of each blade of the fixed scroll and the orbiting scroll along the scroll direction, and a seal member is formed in these grooves and the seal member is pressed against the slide surface. A scroll member, wherein the fixed scroll and the orbiting scroll share the same spring member as the spring member.