CN-122003546-A - Compressor with a compressor body having a rotor with a rotor shaft

CN122003546ACN 122003546 ACN122003546 ACN 122003546ACN-122003546-A

Abstract

The invention aims to suppress noise generated by contact between a concave portion and a ring. The compressor comprises a1 st shell (3) forming a shell, a fixed scroll, a rotary scroll (6), a rotation preventing mechanism for preventing rotation of the rotary scroll (6), and a lubricating oil supply part for supplying lubricating oil to the rotation preventing mechanism. The rotation preventing mechanism has a recess (32) formed on one side of the orbiting scroll (6) or the 1 st housing (3), a ring (33) disposed in the recess (32) and having an outer peripheral surface (33 b) facing an inner peripheral surface (32 a) of the recess (32) with a gap therebetween, and a pin (34) provided on the other side of the orbiting scroll (6) or the 1 st housing (3) and engaged with the inner peripheral surface (33 a) of the ring (33), and the ratio of the axial length of the ring (33) to the gap formed between the bottom surface (32 b) of the recess (32) and the axial end of the ring (33) is 0.01 or more and less than 0.06.

Inventors

TANAHASHI RYOUTA
Chi Gaogangshi
The original extension made Tian

Assignees

三菱重工制冷空调系统株式会社

Dates

Publication Date: 20260508
Application Date: 20241009
Priority Date: 20231011

Claims (4)

1. A compressor includes a frame body forming a casing; A fixed scroll which is accommodated in the frame and fixed to the frame side; a orbiting scroll engaged with the fixed scroll and orbiting with respect to the fixed scroll; Rotation preventing mechanism for preventing rotation of the orbiting scroll, and A lubricant supply unit for supplying lubricant to the rotation preventing mechanism, The rotation preventing mechanism has a recess formed on one of the orbiting scroll side and the frame side, a ring disposed in the recess and having an outer peripheral surface facing an inner peripheral surface of the recess with a gap therebetween, and a pin disposed on the other of the orbiting scroll side and the frame side and engaged with the inner peripheral surface of the ring, The ratio of the axial length of the ring to the gap formed between the bottom surface of the recess and the axial end of the ring is 0.01 or more and less than 0.06.
2. The compressor of claim 1, wherein, The ratio of the axial length of the ring to the gap formed between the bottom surface of the recess and the axial end of the ring is 0.02 or more and less than 0.04.
3. The compressor according to claim 1 or 2, wherein, A ratio of a gap formed between the inner peripheral surface of the concave portion and the outer peripheral surface of the ring to a gap formed between a bottom surface of the concave portion and an axial end portion of the ring is 0.25 or more and less than 1.0.
4. The compressor of claim 3, wherein, The ratio of the gap formed between the inner peripheral surface of the recess and the outer peripheral surface of the ring to the gap formed between the bottom surface of the recess and the axial end portion of the ring is 0.25 to 0.5.

Description

Compressor with a compressor body having a rotor with a rotor shaft Technical Field The present invention relates to a compressor. Background A scroll compressor is known which includes a pair of fixed scroll and orbiting scroll which are engaged with each other to form a compression chamber. The orbiting scroll compresses refrigerant gas in the compression chamber by performing an orbiting motion with respect to the fixed scroll. The scroll compressor is provided with a rotation preventing mechanism to prevent rotation of the orbiting scroll. Examples of the rotation preventing mechanism include an oldham coupling type rotation preventing mechanism and a pin ring type rotation preventing mechanism. For example, patent document 1 discloses a scroll compressor provided with a pin ring type rotation preventing mechanism. Technical literature of the prior art Patent literature Patent document 1 Japanese patent laid-open No. 2022-112858 Disclosure of Invention Technical problem to be solved by the invention In the rotation preventing mechanism having the ring accommodated in the recess and the pin engaged with the ring, noise generated by friction between the inner peripheral surface of the recess and the outer peripheral surface of the ring or friction between the bottom surface of the recess and the axial end portion of the ring becomes a problem due to a load generated by the rotation of the orbiting scroll. The present invention has been made in view of such circumstances, and an object thereof is to provide a compressor capable of suppressing noise generated by contact between a concave portion and a ring. Means for solving the technical problems In order to solve the above problems, the compressor of the present invention adopts the following means. A compressor according to an aspect of the present invention includes a housing that forms a casing, a fixed scroll that is accommodated in the housing and fixed to the housing, a orbiting scroll that meshes with the fixed scroll and orbits with respect to the fixed scroll, an rotation preventing mechanism that prevents rotation of the orbiting scroll, and a lubricant supplying unit that supplies lubricant to the rotation preventing mechanism, the rotation preventing mechanism having a recess formed in one of the orbiting scroll side or the housing side, a ring that is disposed in the recess and has an outer peripheral surface that faces an inner peripheral surface of the recess with a gap therebetween, and a pin that is disposed on the other of the orbiting scroll side or the housing side and engages with the inner peripheral surface of the ring, wherein a ratio of an axial length of the ring to a gap formed between a bottom surface of the recess and an axial end of the ring is 0.01 or more and less than 0.06. Effects of the invention According to the present invention, noise generated by contact between the concave portion and the ring can be suppressed. Drawings Fig. 1 is a longitudinal sectional view of an electric compressor according to an embodiment of the present invention. Fig. 2 is a longitudinal sectional view of a pin ring structure according to an embodiment of the present invention. Fig. 3 is a top view of a pin ring structure according to an embodiment of the present invention. Fig. 4 is a graph showing a relationship between a ratio of the width of the ring to the axial gap and a noise value. Detailed Description An embodiment of the compressor according to the present invention will be described below with reference to the drawings. Fig. 1 shows a longitudinal sectional view of an electric compressor 1 according to the present embodiment. The electric compressor 1 according to the present embodiment is an inverter-integrated electric compressor in which an inverter (not shown) for driving the motor 17 is integrally assembled. The electric compressor 1 includes a housing 2 forming a casing, a scroll compression mechanism 7 accommodated in the housing 2, and a motor 17 driving the scroll compression mechanism 7. The case 2 includes a cylindrical 1 st case (housing) 3 extending along the central axis and a 2 nd case 4 closing one end side (lower end side in fig. 1) of the 1 st case 3 in the central axis direction. The scroll compression mechanism 7 is assembled to one end side of the housing 2. The scroll compression mechanism 7 includes a pair of fixed scroll 5 and orbiting scroll 6. The scroll compression mechanism 7 compresses refrigerant gas. The high-pressure refrigerant gas compressed by the scroll compression mechanism 7 is discharged into the discharge chamber 10 through the discharge port 8. The discharge port 8 is formed at the center of the fixed scroll 5. The refrigerant gas discharged into the discharge chamber 10 is discharged to the outside of the motor-driven compressor 1 through a discharge port (not shown) provided in the casing 2. The fixed scroll 5 is fixed to the 2 nd casing 4 by a fastener (not shown) such as a bolt. The orb