KR850000702Y1 - Horizontal rotar compressor - Google Patents

Abstract

None.

Description

Horizontal rotary compressor

1 is a longitudinal sectional view of a horizontal rotary compressor according to an embodiment of the present invention.

2 is an enlarged cross-sectional view of the critical portion of FIG.

3 is a characteristic diagram showing the relationship between the oil supply amount and the distance l from the inner wall of the blade chamber to the opening center of the oil supply pipe;

* Explanation of symbols for main parts of the drawings

1: casing 3: compression device

4: rotating shaft 5: lubricating oil

10 blade 12 blade blade

12a: through hole 13: oil supply pipe

13a: opening

The present invention relates to a horizontal rotary compressor used in an air conditioner or a refrigerator, and more particularly, to a horizontal rotary compressor having an improved oil supply device.

Conventionally, as a lubrication device for this type of horizontal rotary compressor, an air suction hole and an oil discharge hole are installed in the blade seal while sealingly forming a blade seal behind the blade of the compression device. It is known to connect the oil supply passage which guides lubricating oil to a bearing part. That is, when the blade reciprocating in accordance with the rotation of the rotary shaft operates in the direction of enlarging the volume of the blade chamber, the oil suction hole sucks the lubricating oil into the braid chamber, and on the contrary, the blade reduces the volume of the blade chamber. The oil discharge hole discharges the lubricating oil inside the blade into the oil supply passage when the oil discharge hole is operated. However, in the conventional oil supply apparatus, a check valve is required in the oil suction hole and the oil discharge hole (or oil supply passage), and the structure is complicated and the cost is also significant.

The present invention provides a horizontal type that communicates with the lubricating oil reservoir at the bottom of the casing at the same time by installing only a through hole for lubricating oil in the blade chamber and supplying the lubricating oil to the oil supply passage for lubricating oil in the bearing part of the compression device. The purpose is to obtain a rotary compressor.

Next, a horizontal rotary compressor according to an embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 1, in the casing 1, the transmission element 2 and the compression device 3 receive the rotating shaft 4 horizontally while the lubricant 5 is stored in the lubricant reservoir at the bottom thereof. The transmission element 2 consists of a stator 2a fixed to the inner wall of the casing 1 and a rotor 2b fixed to the rotation shaft 4. On the other hand, the compression device (3) is a cylinder chamber (6a) by the main bearing (7) and the secondary bearing (8) covering the cylinder (6) and both end surfaces of the cylinder (6) and supporting the rotating shaft (4) To form. Moreover, the eccentric part 4a of the said rotating shaft 4 formed through this is located in the cylinder chamber 6a, and the roller 9 is inserted in this eccentric part 4a. In addition, the blade 10 is formed of a reciprocating material in the groove formed in the radial direction in the cylinder 6, the blade 10 is a blade 11 is the end of the eccentric rotation in the cylinder chamber 6a by the spring (11) It is configured to always contact the outer circumferential surface of the roller (9). The blade chamber 12 is hermetically sealed behind the blade 10. As shown in FIG. 2 and enlarged in FIG. 2, the blade chamber 12 has an oil supply pipe which serves as suction and discharge of lubricating oil and forms an oil supply passage for guiding lubricating oil to the bearing 8a of the shaft of the compression device 3 ( 13 is provided only with a through hole 12a for supplying lubricating oil. ”And the opening 13a communicates with the lubricating oil reservoir at the bottom of the casing 1 at a position close to the through hole 12a. Is formed.

Next, the operation of the present invention will be described. The rotor 2b is rotated by the rotational shaft 4 integrally by passing electricity to the transmission element 2. As a result, the roller 9 inserted into the eccentric portion 4a of the rotational shaft 4 eccentrically rotates the inside of the cylinder chamber 6a, whereby a known compression action is performed.

On the other hand, by the eccentric rotation of the roller 9, the blade 10 in contact with the outer circumferential surface of the roller 9 is reciprocated to perform the lubrication action. That is, when the blade 10 moves in the direction of enlarging the volume of the blade chamber 12 (FIG. 2 solid line direction), a part of the lubricating oil in the oil supply pipe 13 and the opening portion are shown as solid lines in FIG. Lubricating oil of the lubricating oil reservoir at the bottom of the casing 1 is sucked into the blade chamber 12 from the through hole 12a through 13a.

Next, when the blade 10 is moved in the direction of reducing the volume in the blade chamber 12 (FIG. 2 dashed line direction), the lubricating oil in the blade chamber 12 passes through the hole as shown by the broken line in FIG. It discharges from the oil supply pipe 13 from 12a, and passes through the oil supply pipe 13, and is guide | induced to the bearing 8a of a shaft.

At this time, a suction action occurs in the opening portion 13a due to the flow rate of the lubricating oil passing through the oil supply pipe 13 so that the lubricant oil at the bottom of the casing 1 passes through the opening 13a and is sucked into the oil supply pipe 13. The lubricating oil discharged from the blade chamber 12 is sent to the bearing 8a. Next, when the blade 10 again fluctuates in the direction of enlarging the volume of the blade chamber 12, a part of the lubricant oil remaining in the oil supply pipe 13 discharged from the blade chamber 12 again becomes the blade chamber 12. At the same time, the lubricating oil at the bottom of the casing 1 is also sucked into the blade chamber 12 through the opening 13a. Therefore, efficient lubrication can be obtained without installing any complicated check valve device. As a result, cost can be reduced, and the number of parts can be reduced to improve reliability and durability. In addition, as shown in FIG. 3, the amount of oil supply varies with the distance l from the inner wall of the blade chamber 12 to the center of the opening 13a of the oil supply pipe 13. In other words, if l is increased, the oil supply amount decreases, while if l is made smaller, the oil supply amount increases. Therefore, it is possible to set the optimum oil supply volume simply by adjusting the l. In addition, the oil supply passage is not limited to the oil supply pipe, and a passage may be formed in the secondary bearing or the like. In addition, a small gap may be formed between the oil supply passage and the through hole to form a communication portion.

The present invention, as described above, forms a seal seal in the rear of the blade of the compression device, while simultaneously lubricating oil in and out of the blade seal, and lubricating oil is introduced into the oil supply passage that induces lubricating oil to the bearing of the shaft of the compression device. Only a through hole to be supplied is provided, and a communication part communicating with the lubricating oil reservoir at the bottom of the casing is formed in the oil supply passage for guiding the lubricant discharged from the through hole to the bearing of the shaft of the compression device. Refueling can be obtained. Therefore, the cost can be reduced, and the number of parts can be reduced to improve reliability and durability. Further, the optimum oil supply amount can be easily set by adjusting the position of the communication section of the oil supply passage.

Claims (1)

In a horizontal rotary compressor in which a compression device is horizontally stored in a casing in which a lubricant reservoir is formed at a bottom thereof, a lubricant seal is formed in a blade chamber hermetically formed at the rear of a blade of a compression device reciprocating in accordance with the rotation of the rotation shaft. It is characterized in that the through hole for supplying lubricating oil to the oil supply passage leading to the lubricating oil at the bearing portion of the shaft of the compression device, which is suction and discharge, and at the same time, a communication portion communicating with the lubricating oil reservoir of the casing bottom is formed in the oil supply passage. Horizontal rotary compressor.