一种泵体组件及压缩机

Abstract

本实用新型实施例提供了一种泵体组件及压缩机，涉及压缩机技术领域。压缩机包括泵体组件，泵体组件包括曲轴、第一轴承和第二轴承。曲轴的偏心部上安装有滚子，第一轴承靠近滚子的端面上设置有第一避让槽，第一避让槽在轴向上的投影落在滚子的端面内侧。第一轴承可以通过第一避让槽减少与滚子的接触面积，从而减小对第一轴承与滚子接触面的加工面积，从而可以提高平面的精度，降低加工难度。

Claims

1. A pump body assembly, characterized by, include: A crankshaft (100) having an eccentric portion (110). Cylinder (600) forming a compression chamber with the crankshaft (100); The first bearing (300) and the second bearing (400) that airtightly seal both sides of the cylinder (600) and support the crankshaft (100) are the cylinder (600). Roller (200), the roller (200) is mounted on the eccentric part (110) and rolls along the inner wall of the cylinder (600) as the crankshaft (100) rotates; The first bearing (300) has a first clearance groove (310) on the end face near the roller (200), and the projection of the first clearance groove (310) in the axial direction falls on the inner side of the end face of the roller (200).

2. The pump body assembly according to claim 1, characterized in that: The first bearing (300) has a first mounting hole (320) that mates with the crankshaft (100), and a first clearance groove (310) is provided around the first mounting hole (320).

3. The pump body assembly according to claim 2, characterized in that: The eccentric portion (110) has a thrust surface (111) that abuts against the first bearing (300), and the inner diameter of the first clearance groove (310) is smaller than the maximum radial dimension of the thrust surface (111).

4. The pump body assembly according to claim 3, characterized in that: The outer diameter of the first clearance groove (310) is larger than the maximum radial dimension of the thrust surface (111).

5. The pump body assembly according to claim 2, characterized in that: The roller (200) has a shaft hole (220) that mates with the crankshaft (100). A clearance hole (210) is provided on the end face of the roller (200) near the first bearing (300). The clearance hole (210) communicates with the shaft hole (220). The outer diameter of the clearance hole (210) is larger than the inner diameter of the first clearance groove (310).

6. The pump body assembly according to claim 1, characterized in that: The second bearing (400) has a second clearance groove (410) on the end face near the roller (200), and the projection of the second clearance groove (410) in the axial direction falls on the inner side of the end face of the roller (200).

7. The pump body assembly according to claim 6, characterized in that: The second bearing (400) has a second mounting hole (420) mounted on the crankshaft (100), and a second clearance groove (410) is provided around the second mounting hole (420).

8. The pump body assembly according to claim 1, characterized in that: The crankshaft (100) has two eccentric portions (110) spaced apart along the axial direction. The number of cylinders (600) and rollers (200) are both two and are arranged in a one-to-one correspondence. The two rollers (200) are arranged in a one-to-one correspondence between the two eccentric portions (110). The pump body assembly also includes a third bearing (500). There is a cylinder (600) between the third bearing (500) and the second bearing (400). There is a cylinder (600) between the first bearing (300) and the second bearing (400). The second bearing (400) has an annular second clearance groove (410) on both end faces in the axial direction. The projection of the second clearance groove (410) in the axial direction falls on the inner side of the end face of the roller (200).

9. The pump body assembly according to claim 8, characterized in that: The third bearing (500) has a third clearance groove (510) on the end face near the roller (200), and the projection of the third clearance groove (510) in the axial direction falls on the inner side of the end face of the roller (200).

10. A compressor characterized by, Includes the pump body assembly as described in any one of claims 1-9.

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