Pump body with oil guide channel for lubricating between the end face of the inner ring and the contact face of the flange structure

The disclosure discloses a pump body and a compressor with the pump body. The pump body includes: a flange structure; a bearing, the bearing being provided with an inner ring and an outer ring, the inner ring being rotatably disposed on the flange structure, and an end face of the inner ring being abutted against a contact face of the flange structure; and an oil guide channel provided inside a side wall of the inner ring, or inside the flange structure, or the side wall of the inner ring and inside the flange structure, an outlet of the oil guide channel being positioned between the end face of the inner ring and the contact face of the flange structure, so as to introduce lubricating oil between the end face of the inner ring and the contact face of the flange structure.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure is a national stage application of International Patent Application No. PCT/CN2018/120662, which is filed on Dec. 12, 2018, and claims priority to Chinese Patent Application No. 201810956709.7, filed on Aug. 21, 2018 and entitled “Pump Body and Compressor with Pump Body”, the contents of which are hereby incorporated by reference in its entirety.

TECHNICAL FIELD

The disclosure relates to a technical field of compressors, in particular to a pump body and a compressor with the pump body.

BACKGROUND

A compression chamber of a sliding vane compressor is formed by separating an inner wall of a cylinder by a sliding vane, so in a sliding vane compressor known to inventors, a relative speed between a head of the sliding vane and the inner wall of the cylinder is very high, which leads to excessive friction between the head of the sliding vane and the inner wall of the cylinder, and the excessive friction affects a power consumption and performance. Long-term excessive friction causes wear and thus affect a reliability of the compressor.

In order to reduce friction and improve reliability, some solutions optimize and transform a cylinder part of the sliding vane compressor known to inventors, that is, replace a cylinder structure known to inventors with a bearing. Because an inner ring of a rolling bearing is rotated, a relative speed between the head of the sliding vane and the inner ring of the rolling bearing is greatly reduced compared with a fixed cylinder, and a friction between the head of the sliding vane and the inner ring of the rolling bearing also is greatly reduced, thus achieving an purpose of reducing friction and improving reliability.

However, this solution brings about a new friction pair, namely a friction between an end face of the inner ring of the rolling bearing and a flange structure. During running at a low rotation speed, the friction is not obvious. Once a running speed is improved, excessive friction appears. Similar to the above, this also leads to increased power consumption or reliability problems.

SUMMARY

Some embodiments of the disclosure provide a pump body and a compressor with the pump body to solve a problem of excessive friction between an inner ring and a flange structure of the pump body in the art known to inventors.

Some embodiments of the disclosure provide a pump body, which includes: a flange structure, a bearing, and an oil guide channel. The bearing is provided with an inner ring and an outer ring, the inner ring is rotatably disposed on the flange structure, and an end face of the inner ring is abutted against a contact face of the flange structure. The oil guide channel is provided inside a side wall of the inner ring, or inside the flange structure, or a side wall of the inner ring and inside the flange structure, an outlet of the oil guide channel is positioned between the end face of the inner ring and the contact face of the flange structure, so as to introduce lubricating oil between the end face of the inner ring and the contact face of the flange structure.

In some embodiments, the oil guide channel is provided inside the side wall of the inner ring, and the outlet of the oil guide channel is positioned on the end face of the inner ring.

In some embodiments, an inlet of the oil guide channel is positioned on a peripheral face of the inner ring, so as to introduce lubricating oil from an area between the inner ring and the outer ring.

In some embodiments, the oil guide channel includes: a first channel, the outlet being positioned on the first channel; and a second channel communicated with the first channel, the inlet being positioned on the second channel.

In some embodiments, there are a plurality of first channels, and the plurality of first channels are spaced from each other along a circumferential direction of the inner ring.

In some embodiments, an extension direction of each of the plurality of first channels is parallel to an axis of the inner ring, and distances between every two adjacent first channels in the plurality of first channels are equal.

In some embodiments, an included angle is formed between an extension direction of the second channel and an extension direction of each of the plurality of first channels. There are a plurality of second channels. The plurality of second channels are spaced from each other along the circumferential direction of the inner ring, and the plurality of second channels are communicated with the plurality of first channels in one-to-one correspondence.

In some embodiments, the second channel is an annular groove. The annular groove is disposed around an outer circumferential surface of the inner ring. The plurality of first channels are communicated with the annular groove. An opening of the annular groove forms the inlet.

In some embodiments, the flange structure includes a first flange and a second flange. Two end faces of the inner ring are abutted against the first flange and the second flange respectively. Both the two end faces of the inner ring are provided with the outlet.

In some embodiments, the bearing further includes: a cage disposed between the outer ring and the inner ring; and a rolling element rotatably disposed on the retainer. A third channel is disposed in the rolling element, and the third channel is configured to introduce lubricating oil between an end face of the rolling element and a contact face of the retainer.

In some embodiments, the pump body further includes a fourth channel disposed on the flange structure, and the fourth channel is configured to introduce lubricating oil to the area between the inner ring and the outer ring.

In some embodiments, the pump body further includes a main axis rotatably disposed in the inner ring in a penetration manner. A fifth channel is provided in the main axis. The fifth channel is communicated with the fourth channel, and the fifth channel is configured to introduce lubricating oil from outside.

Some embodiments of the present disclosure provide a compressor, which includes the above pump body.

In the technical solution of some embodiments in the present disclosure, the oil guide channel is provided inside the side wall of the inner ring or inside the flange structure, and the outlet of the oil guide channel is positioned between the end face of the inner ring and the contact face of the flange structure. In this way, lubricating oil is introduced between the end face of the inner ring and the contact face of the flange structure through the oil guide channel, so as to play a good lubrication effect, reduce a friction between the end face of the inner ring and the flange structure, and thus improve reliability of the pump body and reduce a power consumption.

The above accompanying drawings include the following reference numbers:

DETAILED DESCRIPTION OF THE EMBODIMENTS

The technical solutions in the embodiments of the disclosure are clearly and completely described below in combination with the accompanying drawings in the embodiments of the disclosure. It is apparent that the described embodiments are only a part of the embodiments of the present disclosure but not all. The description of at least one exemplary embodiment below is actually just illustrative, and is never seen as any limit to the disclosure and its disclosure or use. Based on the embodiments of the disclosure, all the other embodiments obtained by those of ordinary skill in the art on the premise of not contributing creative effort should belong to the protection scope of the disclosure.

As shown inFIG. 1toFIG. 6, embodiment1of the disclosure provides a pump body, which includes: a flange structure10, a bearing20, and an oil guide channel30. The bearing20is provided with an inner ring21and an outer ring22, the inner ring21is rotatably disposed on the flange structure10, and an end face of the inner ring21is abutted against a contact face of the flange structure10. The oil guide channel30is provided inside a side wall of the inner ring21, or inside the flange structure10, or the side wall of the inner ring21and inside the flange structure10, an outlet of the oil guide channel30is positioned between the end face of the inner ring21and the contact face of the flange structure10, so as to introduce lubricating oil between the end face of the inner ring21and the contact face of the flange structure10.

In the technical solution of some embodiments in present disclosure, the oil guide channel30is provided inside the side wall of the inner ring21or inside the flange structure10, and the outlet of the oil guide channel30is positioned between the end face of the inner ring21and the contact face of the flange structure10. In this way, lubricating oil is introduced between the end face of the inner ring21and the contact face of the flange structure10through the oil guide channel30, so as to play a good lubrication effect, reduce a friction between the end face of the inner ring21and the flange structure10, and thus improve a reliability of the pump body and reduce a power consumption.

In some embodiments, the oil guide channel30is provided inside the side wall of the inner ring21, so as to convey lubricating oil from an inside of the side wall of the inner ring21to an area between the end face of the inner ring21and the contact face of the flange structure10. The oil guide channel30also is provided inside the flange structure10, so as to convey lubricating oil from an inside of the flange structure10to the area between the end face of the inner ring21and the contact face of the flange structure10.

In some embodiments, the oil guide channel30is provided inside the side wall of the inner ring21, and the outlet of the oil guide channel30is positioned on the end face of the inner ring21. In this way, lubricating oil is conveyed from the inside of the side wall of the inner ring21to the area between the end face of the inner ring21and the contact face of the flange structure10, thus playing a good lubrication effect, and reducing the friction between the end face of the inner ring21and the flange structure10.

As shown inFIG. 1, an inlet of the oil guide channel30is positioned on a peripheral face of the inner ring21, so as to introduce lubricating oil from an area between the inner ring21and the outer ring22. Because the area between the inner ring21and the outer ring22has a large space, more lubricating oil is stored, so that conveying lubricating oil from the area between the inner ring21and the outer ring22to the oil guide channel30ensures a good lubrication effect.

In some embodiments, the oil guide channel30includes: a first channel31, the outlet being positioned on the first channel31; and a second channel32communicated with the first channel31, the inlet being positioned on the second channel32. In this way, lubricating oil is conveyed from the area between the inner ring21and the outer ring22to the area between the end face of the inner ring21and the contact face of the flange structure10through the second channel32and the first channel31.

As shown inFIG. 3, there are plurality of first channels31, and the plurality of first channels31are spaced from each other along a circumferential direction of the inner ring21. In this way, lubricating oil is conveyed to different positions between the end face of the inner ring21and the contact face of the flange structure10through the plurality of first channels31, so as to evenly distribute lubricating oil and thus improve the lubrication effect.

In some embodiments, an extension direction of each of the plurality of first channels31is parallel to an axis of the inner ring21, and distances between every two adjacent first channels31in the plurality of first channels are equal. In this way, distribution of lubricating oil between the end face of the inner ring21and the contact face of the flange structure10is more even. In some embodiments, an axis of the first channel31is disposed at a position equidistant from the inner surface and the outer surface of the inner ring21.

As shown inFIG. 3toFIG. 5, in some embodiments, an included angle is formed between an extension direction of the second channel32and an extension direction of each of the plurality of first channels31. There are a plurality of second channels32. The plurality of second channels32are spaced from each other along the circumferential direction of the inner ring21, and the plurality of second channels32are communicated with the plurality of first channels31in one-to-one correspondence. In this way, lubricating oil is conveyed through the plurality of second channels32to the corresponding first channels31for easy flow of lubricating oil. In some embodiments, the second channels32are disposed along a radial direction of the inner ring21.

As shown inFIG. 1andFIG. 2, the flange structure10includes a first flange11and a second flange12. Two end faces of the inner ring21are abutted against the first flange11and the second flange12respectively. Both the two end faces of the inner ring21are provided with the outlet. In this way, enough lubricating oil is conveyed between one end face of the inner ring21and the first flange11to form an oil film, and enough lubricating oil is conveyed between the other end face of the inner ring21and the second flange12to form an oil film, so as to improve the lubrication effect.

In some embodiments, in order to make lubricating oil flow smoothly, an area of the minimum cross section of the oil guide channel30is set to be greater than 0.5 mm2. In some embodiments, an area of the minimum cross section of other channels communicated with the oil guide channel30also is set to be greater than 0.5 mm2.

As shown inFIG. 6, the bearing20further includes: a cage23disposed between the outer ring22and the inner ring21; and a rolling element24rotatably disposed on the retainer23. A third channel is disposed in the rolling element24, and the third channel is configured to introduce lubricating oil between an end face of the rolling element24and a contact face of the retainer23. In this way, there is enough lubricating oil between the end face of the rolling element24and the contact face of the retainer23, so as to play a good lubrication effect, reduce a wear of the rolling element24and the retainer23, and increase a life of the bearing20.

In some embodiments, the pump body further includes a fourth channel13disposed on the flange structure10, and the fourth channel13is configured to introduce lubricating oil to an area between the inner ring21and the outer ring22. In this way, lubricating oil is conveyed to the area between the inner ring21and the outer ring22through the fourth channel13, so as to ensure adequate supply of lubricating oil. Lubricating oil is introduced from an outside of the pump body. As shown inFIG. 1, the fourth channel13is disposed on the second flange12, and an oil outlet of the fourth channel13is communicated with the area between the inner ring21and the outer ring22.

In some embodiments, the pump body further includes a main axis40rotatably disposed in the inner ring21in a penetration manner. A fifth channel41is provided in the main axis40. The fifth channel41is communicated with the fourth channel13, and the fifth channel41is configured to introduce lubricating oil from outside. In this way, lubricating oil is introduced from outside through the fifth channel41in the main axis40, and then conveyed to the area between the inner ring21and the outer ring22through the fourth channel13.

In some embodiments, the pump body further includes a gear pump. The gear pump is disposed at a bottom of the main axis40, so that lubricating oil is supplied by the gear pump for the fifth channel41to facilitate a flow of the lubricating oil.

As shown inFIG. 7andFIG. 8, embodiment2of the disclosure provides another pump body. Different from embodiment1, the second channel32of the oil guide channel30is an annular groove, the annular groove is disposed around an outer circumferential surface of the inner ring21, the plurality of first channels31are communicated with the annular groove, and an opening of the annular groove forms the inlet. In this way, lubricating oil is conveyed to plurality of second channels32through the annular groove.

As shown inFIG. 9, embodiment3of the disclosure provides another pump body. Different from embodiment1, the fourth channel13is disposed on the first flange11, and the oil outlet of the fourth channel13is communicated with the area between the inner ring21and the outer ring22.

Embodiment4of the disclosure provides a compressor, which includes the above pump body. The oil guide channel30is provided inside the side wall of the inner ring21or inside the flange structure10, and the outlet of the oil guide channel30is positioned between the end face of the inner ring21and the contact face of the flange structure. In this way, lubricating oil is introduced between the end face of the inner ring21and the contact face of the flange structure10through the oil guide channel30, so as to play a good lubrication effect, reduce the friction and wear of the end face of the inner ring21and the flange structure10, and thus improve the reliability of the compressor and reduce the power consumption.

The above is only the embodiments of the present disclosure and not intended to limit the present disclosure; for those skilled in the art, the present disclosure may have various modifications and changes. Any modifications, equivalent replacements, improvements and the like within the spirit and principle of the present disclosure should fall within the protection scope of the claims of the present disclosure.