JPS59213964A - Rotary compressor - Google Patents

Abstract

PURPOSE:To make the rotation of a rotary sleeve go on smoothly, by installing an elastic member in position between at least one of vane groove bases among vanes fitted detachably in a rotor and a vane bottom surface. CONSTITUTION:A rotary sleeve 30 is installed inside a center housing 22, while a filmy air bearing chamber 40 is interposed between these parts. Each vane 16 is fitted in plural vane grooves 15 installed in a rotor 10. An electric member 8 is installed in position between at least one base of these vane grooves 15 and a vane bottom surface, and each vane 16 is pressed against the rotary sleeve 30. With this constitution, frictional resistance is more increased than as usual, and the rotary sleeve 30 is forcibly rotated from the outset of starting whereby a dynamic pressure bearing can be formed speedily owing to the air bearing chamber 40.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vane-type rotary compressor that can be used as a supercharger for an internal combustion engine. - This relates to a rotary compressor with high performance.

The applicant of the present invention first proposed a vane-type rotary compressor in which a rotating sleeve is interposed between a rotor and a center housing, and the rotating sleeve is supported by compressible fluid such as air.
% Application No. 56-162025).

The compressor rotates together with the rotating sleeve and vane to prevent heat generation and wear caused by sliding of the vane tip, so it is used in automobile factories, machines, etc. that operate at a wide range of rotation speeds from low to high speeds. It can be said that it is the most suitable as a feeder.

However, at the time of startup, the pressure in the air bearing chamber, which is the space formed by the inner circumferential surface of the center housing and the outer circumferential surface of the rotating sleeve, is atmospheric pressure or lower. is in contact,
In other words, the rotary sleeve cannot be sufficiently supported, and the rotary sleeve is pressed against the inner circumferential surface of the center housing by the compression pressure of the compressor at the time of startup.

For this reason, the rotation of the rotating sleeve lacks smoothness, and there are drawbacks such as torque fluctuations and abnormal temperature rises during startup.

The uninvented technical problem is to make the rotation of the rotation Nureve Nissin,
It is an object of the present invention to provide a good rotary compressor without torque fluctuation and abnormal temperature rise.

In order to solve the above technical problems, the configuration of the rotary compressor of the present invention, that is, the technical means are as follows.

A rotary compressor comprising a rotary sleeve rotatably supported on a center housing, a rotor rotating at an eccentric position of the rotary sleeve, and a vane fitted into the rotor so as to be removable and removable. An elastic member is installed between the bottom of at least one of the vane grooves and the bottom surface of the vane groove fitted in the bevel/groove.

With the above technical means VC, the frictional resistance between the bee 7 and the rotating sleeve can be increased, and the rotating sleeve can be forcibly rotated from the time of startup. The air bearing chamber has a biasing function that forces the entire dynamic pressure bearing to be formed, and has the effect unique to the present invention that even smoother rotation can be obtained.

An embodiment of the present invention will be described below with reference to FIG. 1st
As shown in the figures and FIG.
．． The pulley 14 is supported by bearing rings 18 and 19 in the bearing ring 23, and the pulley 14 receives rotational drive from the front end thereof.

A vane 16 is fitted into each of the plurality of vane grooves 15 of the rotor 10 so as to be able to move in and out, and the tip of the vane 16 is a-
The rotary sleeve 30 surrounding the main body 10 contacts the rotary sleeve 30 .

The rotating sleeve 30 is housed inside the center housing 22, and a thin film-like air bearing chamber 40 is interposed between the two.

A rear cover 24 is fixed to the back surface of the rear side housing 23 with a full gasket, and a discharge chamber 41 and a suction chamber 51 are provided in the rear cover.

The discharge chamber 41 communicates with the discharge hole 42 via the discharge valve 60,
The discharge hole communicates with a discharge side working chamber 43 between the a-tater 10 and the rotating sleeve 30.

Vane groove back pressure communication hole 4 from discharge chamber 41 to vane groove bottom
8 is provided to introduce discharge pressure into the vane groove 15 and the vane 71 is
6 to facilitate protrusion.

The suction chamber 51 is connected to the suction side working chamber 53t/? on the opposite side via the suction hole 52. Send a series of messages.

An annular groove 26 is provided in which the rotating nut 30 of the front and rear side hawasings 21 and 23 slide, and the non-lubricated sliding member 25 is completely fitted into the annular groove 26.

The bolts 27 pass through the thick part 28 of the center housing 22, and the front and rear side housings 21, 23,
Tighten the center housing 22 and rear cover 24 in the axial direction.

As shown in FIG.
A high-pressure hole 44 and a low-pressure hole 54 are bored to reach the end faces of the center housing 22, and an inflow lower 1 and an outflow lower 2' (i: respectively) extending in the axial direction from the end face of the center housing 22 in contact with the high-pressure holes and the low-pressure holes are provided.

The inflow lower 1 and the outflow lower 2 are groove-shaped openings on the inner peripheral surface of the center housing 22, and are connected to the rear side housing 2, respectively.
The high pressure hole 44 and the low pressure hole 54 of No. 3 communicate with each other.

[E] The contact area on the inner circumferential surface of the center housing 22 that the J-rolling sleeve 30 contacts is on the discharge side.

As shown in FIG. 2, when the inflow lower 1 and the outflow lower 2 are provided at the beginning and end of the discharge side, the air flow in the contact area increases.

However, if the location of the contact area can be determined from the beginning,
Provide an inlet and an outlet according to the contact area.

Since the rotating sleeve 30 during high-speed rotation exerts a suction action on the inflow lower 1, the inflow lower 1 does not necessarily need to be connected to a high-pressure discharge chamber, but can be connected to the atmosphere and draw in outside air from the inlet. It's okay.

Since the air flowing through the contact area can enter the working chamber on the suction side from the end face of the rotating sleeve 30, the outflow lower 2 may be omitted.

In such a rotary compressor, a plurality of (41 in the case of FIG. 2) vane grooves 15 provided in the rotor 10 and each vane 16 are fitted, but at least one vane groove 1 is fitted into the rotor 10.
5 Elastic member 8 (coil spring in the figure) between the bottom and the bottom
is installed, by pressing the bee 716 against the rotating sleeve 30, the total frictional resistance is increased more than usual, the rotating sleeve is forcibly rotated from the time of startup, and the hydrodynamic bearing is formed more quickly in the air bearing chamber 40. This has the effect of providing even more efficient rotation.

1. As shown in FIG. 1, the vane I is discharged from the general discharge hole 42 through the high pressure inner hole 48 provided in the rema-side nozzle 23 and the high pressure plate 7 groove 49 that intersects with the high pressure inner hole. ′? The effect is further improved by communicating with the bottom of the vane groove through the low pressure inner hole 58 provided in the Lima side housing 23 from the suction hole 52 and the low pressure vane groove 59 communicating with the low pressure inner hole. can be expected.

FIG. 3 is a sectional view of another embodiment in which a plate 8' is used in place of the coil spring 8, which is an uninvented elastic member.

FIG. 4 is a sectional view of another embodiment in which a corrugated pipe 82 is used in place of the coil spring 8, which is the elastic member of the present invention.

The bar 716 in Figures 3 and 4 above is a board pie 81.
Alternatively, it is fitted into the wave pie/82 vane groove 15 so as to be freely removable and removable, and exhibits the same function and effect as the coil spring 8 of the above embodiment.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional front view of a vane type rotary compressor which is an embodiment of the present invention, and FIG.
FIG. 3 is a cross-sectional view showing a state in which mechanical springs are fully used for the elastic member, and FIG. 4 is a cross-sectional view showing a state in which a wave spring is used as an elastic member. 8: Elastic member 10: Rotor 15: Vane groove 16: Vane 22: Center housing 30: Rotating sleeve Patent applicant Nihon Victoring Co., Ltd. Figure 1 1"A-A' Figure 2

Claims (1)

[Claims] (1) A rotary compressor that includes a rotary sleeve rotatably supported on a center housing, a rotor that rotates at an eccentric position of the rotary sleeve, and a vane that is fitted in and out of the rotor, A rotary compressor characterized in that an elastic member is installed between the bottom of at least one of the vanes fitted in the plurality of vane grooves and the bottom surface of the vane 7. (2) The rotary compressor according to claim 1, wherein in the rotary compressor, the elastic member is a coil-by-piece, a spring bar, a wave bar, or the like.