JPH0724633Y2 - Scroll compressor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a scroll compressor having a tip seal.

[Prior Art] A method of forming a hardened layer on the entire surface of a scroll and coating a familiar substance over the entire surface of the scroll is disclosed in JP-B-63-32991. In this case, the purpose is to prevent leakage and galling in the radial and axial clearance directions between the scrolls.

[Problems to be solved by the invention] However, in the case of a scroll compressor that uses a tip seal against leakage in the axial clearance direction,
If the coating is also applied to the inner surface of the end plate with which the tip of the tip seal is in sliding contact, it has the opposite effect in terms of wear of the tip seal.

In other words, if the inner surface of the end plate, which slides on the tip seal, is coated, the insulation of the compression heat by the coating increases, the temperature of the tip seal sliding surface rises abnormally, and the tip seal wears quickly. It becomes big.

[Means for Solving Problems] In order to solve the above problems, the present invention is configured by a combination of a fixed scroll and an orbiting scroll, and is installed upright on the inner surface of each end plate of the fixed orbiting scroll. In a scroll compressor in which a tip seal groove is formed at the tip of the wrap, and the tip seal is arranged in the tip seal groove, the inner surfaces of the end plates of the scrolls with which the tip seals are in sliding contact are removed in both scrolls. , A scroll compression in which a coating layer having conformability is formed only on the side surface of at least one scroll wrap, cooling fins are formed on the outer surface of the end plate, and cooling means for cooling the outer surface of the end plate is provided. The purpose is to provide a machine.

[Function] Since the coating layer having the conformability is formed only on the side surface of the wrap, there is no coating layer having the conformability on the inner surface of the end plate on which the tip of the tip seal slides, and therefore the tip seal tip slides. Even if the temperature rises due to the heat, the heat is not insulated but is transferred to the outer surface of the end plate made of a material with a large cooling effect, and the cooling air is supplied to the outer surface of the end plate, so heat dissipation proceeds and the chip The cooling effect of the seal can be enhanced and the life of the chip seal can be increased.

[Embodiment] An embodiment of the present invention will be described with reference to FIG.
Fixed scroll end plate, 2 is an orbiting scroll end plate,
End plate 1 of fixed scroll and end plate 2 of orbiting scroll
The inner surfaces of the wraps 1a and 2a are erected, and the tips of the wraps 1a and 2a have grooves 1b and 2b into which tip seals are inserted.
Are respectively formed, and the chip seals 3 can be fitted into the chip seal grooves 1b and 2b, respectively.
Now, only on the side surfaces of the wraps 1a and 2a excluding the inner surfaces of the end plates 1 and 2 of the scrolls with which the tip seals 3 are in sliding contact,
The coating layer 4 is formed of a material that is familiar.

The coating layer 4 is masked so that it is not formed on the inner surface of the end plates 1 and 2 on which the tip seal slides.

In the scroll compressor formed by combining the fixed and orbiting scrolls having the above-described configuration, the cooling fins 5 are formed on the outer surfaces of the end plates 1 and 2, and the outer fins of the end plates 1 and 2 are formed. The tip seal 3 comes into sliding contact with the inner surface of the end plates 1 and 2 of the other end, and the generated heat is generated from the inner surface of the end plates 1 and 2 made of a material having a large cooling effect. Good movement to the outer surfaces of the end plates 1 and 2 and no heat buildup by the cooling air supplied to the outer surfaces of the end plates 1 and 2 are blown away at any time, so the cooling effect of the tip seal 3 is improved.

[Advantages of the Invention] The present invention is directed to a scroll press machine having a tip seal by forming a coating layer only on the side surfaces of the end plates excluding the inner surfaces of the end plates of the scrolls with which the tip seals are in sliding contact. The chip seal that slides on the inner surface of the plate does not have any heat insulating function due to the coating layer and can be cooled well. Therefore, the life of the tip seal can be greatly improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a combination of a rotating scroll and a fixed scroll according to the present invention. 1a, 2a …… Wrap 4 …… Coating layer

Claims (1)

[Scope of utility model registration request] 1. A tip seal groove is formed at the tip of a wrap which is constituted by a combination of a fixed scroll and an orbiting scroll and which is erected on the inner surface of each end plate of the fixed orbiting scroll, and the tip seal groove is provided with a tip seal groove. In a scroll compressor provided with a seal, in both scrolls, except for the inner surfaces of the end plates of the scrolls in which the tip seals are in sliding contact, a coating layer having conformability only to the side surface of at least one scroll wrap is provided. A scroll compressor formed by forming cooling fins on the outer surface of the end plate and further including cooling means for cooling the outer surface of the end plate.