JPS5859386A - Oscillating type compressor - Google Patents

Abstract

PURPOSE:To make an oscillating compressor in a compact structure, by arranging a compressor actuating section and a motor in a single, enclosed casing, and guiding a roller by a connecting member adapted for connecting the compressor actuating section and the motor to each other. CONSTITUTION:A motor 4 and a compressor actuating section 2 consisting of a cylinder constituting member 6, oscillation plate 17, rotary cam 23, connecting members 30, 30' for connecting the motor 4 and the cylinder constituting member 6 to each other, etc. are arranged in an enclosed casing 1. Out of the connecting members 30, 30', the connecting member 30' is constituted by two parallel bars 31, 32, between which is held a roller 36 attached in a freely rotatable manner to a roller shaft 35 that is extended from a lower portion of the oscillation plate 17. With such an arrangement, rotational motion of the oscillation plate 17 can be converted into oscillating motion with low frictional resistance. Further, since the connecting member 30' is located at the bottom of the casing 1, the roller 36 is dipped sufficiently in lubricating oil O, so that the efficiency of converting the rotationl motion into oscillating motion can be raised.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oscillating compressor used in refrigerators, car air conditioners, and the like.

In general, an oscillating compressor is provided with a cylinder forming body in which a plurality of cylinders are provided at equal angular intervals in a casing, and near this cylinder forming body, there are inclined cylinders.
A rocking plate is arranged to rock in the axial direction of the cylinder,
The shaft end of a piston that reciprocates within the cylinder is attached to this rocking plate.

The rocking plate is rocked by a rotating cam member having an inclined surface, and this cam member is rotated by a drive shaft extending from a motor.

However, in such an oscillating compressor, the compressor body, which is made up of a cylinder forming body, a oscillating plate, etc., and the motor are separate units, which not only makes the compressor too expensive, but also makes it difficult to install refrigerators or skewers. , and in limited cases, there is a problem that not only is the installation work time-consuming, but also the upkeep and maintenance of the compressor is time-consuming.

In addition, the rocking/swinging plate of this type of compressor has many sliding parts.
There are also problems in that there is a lot of energy loss in these sliding parts, and the structure of the sliding parts is also complicated.

In view of the above, an object of the present invention is to provide an oscillating compressor that is compact, easy to assemble into various equipment, efficient, robust, and easy to maintain and maintain. .

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4.

In FIG. 1, the oscillating compressor of the present invention has a cylindrical sealed casing 1, and a motor 4 built in a motor cover 3 is disposed on the right side outside the casing 3.

As shown in the second WJ, the compressor operating section 2 has a cylinder forming body 6 in which three cylinders S, S, S are arranged at equal angles, and the cylinder head 1 is located at the left end of this forming body 6. A pulp plate 8 is attached between the head 7 and the left end surface of the formed body 6.

A suction chamber 9 and a discharge chamber 10 are provided in the head 7, and a suction hole 11 and a discharge hole 12 are provided in the pulp plate 8.
are opened, and the suction valve 13 and the discharge valve 14 are connected to both the holes 11 and 12.

A stay 15 is screwed into the center of the precursor cylinder forming body 6, and a swing plate 17 is attached to the tip of the stay 15 via a ball 16 so as to be able to vibrate obliquely.

A piston shaft 19 is attached to the swing plate 17 at a position corresponding to the cylinder 5 via a rotary bearing 18, and a piston 21 is attached to the piston shaft 19 via a coil spring 20. Here, since it is necessary for the swing plate 17 to make the stroke of the piston 21 as large as possible, the distance between the pawl 16 and the rotary bearing 18 needs to be as large as possible. For this reason, the swing plate 11 has a substantially equilateral triangular shape and is rotatable with the cylinder shaft 19 directly connected to it. Of course, the shape of the rocking plate may be any other regular polygon.

Further, near the center of the rocking plate 17, a one-rotation cam 23 having an inclination 11i 23a is brought into contact via a thrust bearing 22, and this rotary cam 23 is directly fixed to the drive wheel 24 of the motor 4. There is.

A plurality of connecting bodies 30 to 30' for connecting and fixing the cylinder forming body 6 and the motor 4 are provided at each side 34 of the swing plate 17f) and the closed casing 1 and the closed casing 1. is suppressed from increasing.

One of the connecting bodies 30 to 30' is integrally molded with the motor cover 3, and the other is attached to the cylinder forming body with a screw 37.
It is fixed with etc. Of the plurality of connecting bodies '30, 30', the connecting body 30' consists of two parallel bars 31,32, and the position where the lubricating oil O is always stored at the bottom of the casing is immersed, and the rocking plate A rotary roller 36 is rotatably attached to a roller shaft 35 extending from the lower side of the roller 17.
It is held between the two parallel bars 31 and 32 and guided in the left and right direction.

During operation, the rocking body 11 is always subjected to i-rotation motion by the rotating cam member 23 directly connected to the motor 4, but due to the cooperation between the parallel bars 31, 32 and the rollers 36, the rocking body 11 can perform the rotary motion with extremely low frictional resistance. It is blocked and converted into a rocking motion. Furthermore, since the rotating roller 36 is always immersed in the IIW/I oil '0' at the bottom of the casing, the energy 0s in the above conversion 5- is further reduced.

Note that a recess is provided at the center of the left end of the cylinder head 7 and the center of the right end of the motor cover 3, and a supporting coil spring 25.2B is provided within the recess.

From outside the casing 3, as shown in FIG. 3, a suction supply pipe 29 for sucking refrigerant into the sealed casing 1 is inserted into the casing from above, and the suction g! 27 is arranged in an arc shape along the casing 1. The suction pipe 27 is opened directly below the suction supply pipe 29, and a portion thereof is immersed in the lubricating oil O injected into the lower part of the casing 1.

An injection hole 28 is opened in the part of the suction pipe 27 that is immersed in the lubricating oil O, and the refrigerant is mixed with the refrigerant sucked into the lQ lubricating oil suction pipe 27 by the injection action of the refrigerant, and is especially absorbed from the upper part of the casing. It is sprinkled on the rocking plate 17. Therefore, if the lubrication for the face of the rotating bearing 18 is good, then the lubrication of the other sliding parts will be good! The gliding effect will also be sufficient.

The refrigerant in the sealed casing 1 is 'cylinder head 1
The air is sucked in from the upper open lower a (Fig. 1) of the rotary cam 2.
A piston 2 connected to a rocking plate that rocks due to the action of
After being sucked into the cylinder 5 and compressed in synchronization with the reciprocating motion of the cylinder 1, it is discharged into the discharge chamber 10, and flows out from the discharge pipe 37 connected to the discharge chamber 10.

As explained above, in addition to incorporating the compressor operating part consisting of the cylinder forming body and the rocking plate, etc. and the motor in one sealed casing, and also using the connecting body as a guide for the roller of the rocking plate, the entire compressor Not only can it be formed compactly, making it easy to insert it into various devices, but since the flK rotating rollers of the two parallel bars of the connecting body are guided, the opening resistance is extremely small, and the structure is wheel-heavy. Since the connecting body is directly fixed to the motor and the cylinder forming body, there is a strong vAf, and the assembly, maintenance, and maintenance are easy.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of the oscillating compressor of the present invention, Fig. 2 is a cross-sectional view taken along ■-■ in Fig. 1, Fig. 3 is a cross-sectional view taken along ■-■ in Fig. 1, and Fig. 4 is a cross-sectional view taken along .111117) 17-1s! :l1ilt
It is l. 1... Sealed casing, 2... Compressor operating section, 3.
... Motor cover, 4... Motor, 5... Cylinder, 6... Cylinder forming body, T... Cylinder head, 15... Stage, 17... Rocking plate, 2
3... Rotating cam, 24... Drive shaft, 30.30-.
... Connecting body, 31.32... Bar, 35... Roller shaft, 36... Rotating roller.゛Patent applicant: Fujihana III Research Institute, agent: Uki Kobashi, patent attorney

Claims (1)

[Claims] A sealed casing, a cylinder forming body disposed at one end inside the casing and having a plurality of cylinders provided at equal angular intervals, and a rocking plate provided obliquely for reciprocating the pistons in the cylinders. , a motor disposed at the other end within the casing, a rotary cam member directly connected to the drive shaft of the motor and having an inclined surface for swinging the rocking plate, a cylinder forming body and the motor. The connecting body located at the bottom of the casing is provided with two parallel bars, and the rotating roller attached to the roller shaft extending from the lower end of the rocking plate is connected to the two parallel bars. A rocking compressor characterized by being guided by a connecting body made of bars.