JPH0260876B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rotary compressor used in a refrigeration cycle, and particularly to its discharge valve structure.

Conventional configuration and its problems As shown in Figure 3, the conventional valve retainer structure has a discharge chamber c next to a compression chamber b in a cylinder body a.
In order to fasten the valve holder d and the valve e, the valve holder d and the valve e are fastened to the cylinder body a with bolts f, so the distance between the compression chamber b and the discharge valve chamber is lengthened. , a space for the screw thread was required to allow sufficient fastening with the bolt f.

For this reason, the volume of the discharge hole g through which the refrigerant passes through the discharge valve chamber c due to the compression chamber b becomes large, which has the disadvantage of lowering the efficiency of the compressor.

OBJECT OF THE INVENTION Therefore, an object of the present invention is to fix a valve and a valve holder to a discharge valve chamber.

Structure of the Invention In order to achieve this object, the present invention assembles a valve seat, a valve, and a valve holder that restricts and holds the movement of the valve with a fastening member, bends both ends of the valve holder at right angles, and The valve is inserted in pressure contact with the wall of the discharge valve chamber on the opposite side.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1 of the accompanying drawings.
This will be explained according to FIG.

In FIG. 1, 1 is a sealed container, 2 is a motor stator fixed in the sealed container 1, 3 is a rotor, 4 is a crankshaft rotated by the rotor 3, and 5 is a crankshaft of the crankshaft 4. A roller that compresses refrigerant using axial force. 6 is a compression chamber; the upper end plate 7;
It is surrounded by a lower end plate 8, a cylinder body 9, and the roller 5.

In FIG. 2, 10 is a discharge valve chamber provided in the cylinder body. The valve holder 11, the valve 12, and the valve seat 13 are fastened with a rivet 14 (fastening member) and inserted into the discharge valve chamber 10.

The refrigerant compressed in the compression chamber 6 passes through the discharge hole 15, pushes up the valve 12, and discharges the discharge valve chamber 10.
The structure is such that it is discharged at

In the above configuration, both ends of the valve holder 11 are bent at right angles, and the end surfaces thereof are brought into pressure contact with the wall of the discharge valve chamber on the opposite side from the compression chamber 6.

Therefore, the valve 12, valve holder 11, and valve seat 13 are fixed in the discharge valve chamber by the spring force of the valve holder 11.

Further, since the valve holding structure of the present invention is not fixed to the cylinder body with bolts, it is possible to shorten the distance between the compression chamber and the discharge valve chamber.
The volume of the compressor can be reduced and the efficiency of the compressor can be increased.

Effects of the Invention As is clear from the above description, the present invention comprises assembling a valve seat, a valve, and a valve holder that restricts and holds the movement of the valve with a fastening member, bending both ends of the valve holder at right angles, Since the valve is inserted in pressure contact with the wall of the discharge valve chamber on the opposite side of the compression chamber, the movement of the valve can be controlled and held just by pressing this valve, so the configuration inside the discharge valve chamber is simplified and the discharge valve It becomes possible to make the inside of the valve chamber a wide space. Therefore, the resistance to the discharged refrigerant can be reduced, making it possible to improve compression efficiency.

Also, since no bolts are used, it can be easily inserted into the discharge valve chamber. The distance between the compression chamber and the discharge chamber can be shortened, the volume of the discharge hole can be reduced, and the efficiency of the compressor can be improved.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a rotary compressor according to an embodiment of the present invention, Fig. 2 is an enlarged view of the area around the discharge port in Fig. 1, and Fig. 3 is a sectional view of a rotary compressor showing a conventional example. It is. 7... Upper end plate, 8... Lower end plate, 9... Cylinder body, 10...
Discharge valve chamber, 11...valve holder, 12...valve, 13...valve seat.

Claims (1)

[Claims] 1 A cylinder body having a circular compression chamber equipped with an eccentrically rotating roller and a sliding blade whose tip is in pressure contact with the roller and moves reciprocatingly is held between a frame body, and both end surfaces of the cylinder body are mounted with bearings. A discharge valve chamber is closed by an end plate and parallel to the central axis of the compression chamber of the cylinder body, and a valve seat, a valve, and a valve holder for restricting and holding the valve are assembled by a fastening member, A valve device for a rotary compressor in which both ends of a valve holder are bent at right angles and inserted in pressure contact with a wall of a discharge valve chamber on the opposite side of the compression chamber.