JPH0367094A - Rotary compressor - Google Patents

Abstract

PURPOSE:To reduce the number of components and to obtain a rotary compres sor with high reliability by storing an inner and an outer gears in a space part formed on the part opposite to the cylinder side of a cylinder head so as to integrally constitute a gear pump. CONSTITUTION:A driving force is transmitted to a gear pump 11 from a rotation axis 4 by driving of the rotation axis 4, and this pump 11 is operated so as to suck a lubricating oil to be reserved at the bottom part of a closed container 1. In this case, the gear pump 11 is rotated by the rotation axis 4, and it is necessary that an eccentric amount between the center of a space part 6a of a cylinder head for storing the gear pump 11 and the center of the rotation axis 4 is appropriate. However, as the space part 6a is formed at the rotation axis and the cylinder head 6 which is a bearing of this axis and the eccentric amount between the center of the rotation axis 4 and the center of the space part 6a can be set without putting another part between them, accuracy in machining of the cylinder head 6 can be maintained and a function of the gear pump 11 as an oil feeder can be obtained with accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a rotary compressor used in refrigeration equipment, air conditioning equipment, etc.

[Prior Art] FIG. 2 is a longitudinal sectional view of a rotary compressor previously proposed by the applicant in Japanese Patent Application Laid-Open No. 161299/1983.

In FIG. 1, 1 is a closed container, and 2 is a compression element disposed inside this closed container 1. In FIG. The compression element 2 includes a cylinder 3, a rotating shaft 4 that is arranged at the axial center position of the cylinder 3 and has an eccentric shaft portion, a frame 5 that closes an opening at one end of the cylinder 3, and the other side of the cylinder 3 opposite to the frame 5. A cylinder rod 6 that closes the end opening, a rolling piston 7 that fits into the eccentric shaft portion of the rotating shaft 4 and rotates eccentrically within the cylinder 3, the cylinder 3, the frame 5, and the cylinder head 6.
The vane 9 partitions the compression chamber 8 formed inside the cylinder 3 into a low pressure side and a high pressure side.
The rolling piston 7 is slidably supported by a spring 16 and constantly pressed against the outer circumferential surface of the rolling piston 7. 10
A discharge muffler 11 fixed to the end surface of the cylinder head 6 on the opposite cylinder side is a gear pump for oil supply provided at the tip of the rotating shaft 4, and the gear pump 11 is connected to an outer galley.
and an inner gear llb, and these gears 11a, 1
1b is stored in a storage portion 10a provided in the discharge muffler 10. 12 is an electric motor element, 13 is lubricating oil, 14 is a partition plate disposed between the cylinder head 6 and the discharge muffler 10, and 15 is an oil seal for maintaining airtightness between the cylinder head 6 and the partition plate 14. be.

Next, the operation of the horizontal rotary compressor that is illuminated as described above will be explained. When the rotating shaft 4 is driven by the electric motor element 12, the gear pump ll is operated, and the lubricating oil 13 stored at the bottom of the closed container 1 is transferred to the compression element 2.
Oil is supplied to the sliding parts of the frame 4, the bearing part of the rotating ring 4 of the cylinder head 5, and the inner peripheral surface of the rolling piston 7 through the oil supply hole 4a formed in the rotating shaft 4. Furthermore, when the rotating shaft 4 is driven, the rolling piston 7 rotates eccentrically within the cylinder 3, and the vane 9 is always in pressure contact with the outer peripheral surface of the piston 7, so that the suction pipe is connected to the low pressure side of the compression chamber 8. (not shown) or the gas led from inside the sealed container 1 is compressed, passes through the discharge muffler 10 from the high pressure side of the compression chamber 8, and is released to the high pressure piping outside the sealed container 1 via the discharge pipe (not shown) .

[Problem to be solved by the invention]

Claims (1)

[Claims] A compression element provided in the airtight container includes a cylinder, a cylinder head that closes the open end of the cylinder and pivotally supports a rotating shaft for transmitting driving force from the electric motor element to the compression element, and the cylinder head in the airtight container. A rotary compressor is equipped with a gear pump that supplies lubricating oil stored in the compressor to the sliding portion of the compression element, in which a space is formed in a portion of the cylinder head opposite to the cylinder, and the gear pump A rotary compressor, characterized in that an inner gear and an outer gear are housed, and the gear pump is integrally configured with the cylinder head.