CN210141189U - Oil return device, silencing cover assembly and compressor - Google Patents

Abstract

The utility model discloses an oil return device, which comprises a barrel body, wherein the barrel body is funnel-shaped, the two ends of the barrel body are provided with an oil receiving port and an installation port, the caliber of the oil receiving port is larger than that of the installation port, and the oil receiving port is positioned above the installation port; the cylinder body can be sleeved and fixed outside the bearing through the mounting opening; the wall body of barrel is provided with leads the oilhole. The utility model discloses an oil return device can collect the lubricating oil from bearing stalk portion landing and derive from oil guide hole department to reduce the exhaust hole of lubricating oil flow direction amortization lid, avoid lubricating oil to mix the discharge with the air current in exhaust hole department, thereby reduced the discharge of lubricating oil in the compressor. The utility model also discloses an amortization lid subassembly, it includes amortization lid body and foretell oil return device, the lower extreme of barrel with the upper end of amortization lid body is fixed. The utility model discloses still disclose a compressor, it includes foretell amortization lid subassembly.

Description

Oil return device, silencing cover assembly and compressor

Technical Field

The utility model relates to an oil return device, a amortization lid subassembly and a compressor.

Background

The compressor is a driven fluid machine for raising low-pressure gas into high-pressure gas, and is a heart of a refrigeration system, and it sucks low-temperature low-pressure refrigerant gas from an air suction pipe, drives a piston to compress the refrigerant gas by the operation of a motor, and discharges the high-temperature high-pressure refrigerant gas to an exhaust pipe to provide power for a refrigeration cycle.

Referring to fig. 1, the vertical compressor includes a crankshaft 91, a bearing, and a silencing cover 94, the crankshaft passes through the silencing cover and the bearing, the crankshaft rotates in the bearing, and the silencing cover is provided with an exhaust hole. The bearing includes a flange portion 92 and a shank portion 93, which is cylindrical, for reinforcing the connection of the crankshaft to the bearing. The amortization lid is fixed outside the bearing stalk portion. In the working process, lubricating oil in the gap between the crankshaft and the bearing slides along the bearing handle part and uniformly flows onto the silencing cover, the lubricating oil finally flows through the refrigerant through hole 95 of the bearing flange part so as to flow back to an oil pool in the compressor, but part of the lubricating oil flows into the exhaust hole, then is mixed with air flow and is discharged out of the compressor, and after long-time working, the lubricating oil in the compressor is reduced, so that the movement of parts in the compressor is not smooth enough, and the service life of the compressor is shortened.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model discloses an oil return device, which comprises a cylinder body, wherein both ends of the cylinder body are provided with an oil receiving port and an installation port, the caliber of the oil receiving port is larger than that of the installation port, and the oil receiving port is positioned above the installation port; the cylinder body can be sleeved and fixed outside the bearing through the mounting opening; the wall body of barrel is provided with leads the oilhole.

As a further improvement of the utility model, the cross section of the cylinder body is arc-shaped.

As a further improvement of the utility model, the one end of barrel is provided with the inward protruding ring, the outward flange of ring with the wall body borders on, the inward flange of ring is formed with the installing port.

As a further improvement of the present invention, the oil guiding hole is formed at the joint of the ring and the wall body.

As a further improvement of the utility model, the oil guide hole is a strip hole.

As a further improvement of the utility model, it is a plurality of the oil guide hole centers on the centre of a circle of installing port is arranged.

As a further improvement of the present invention, the wall body is provided with a plurality of oil guide holes; the wall body is provided with the bulge, the bulge to the central axis protrusion of barrel, the bulge is located two lead between the oilhole.

As a further improvement of the utility model, the bulge is formed with protrusion body and two domatic, the both sides of protrusion body respectively with two domatic connection, domatic with the wall body internal surface borders on.

The utility model also discloses an amortization lid subassembly, it includes amortization lid body and foretell oil return device, the lower extreme of barrel with the upper end of amortization lid body is fixed.

The utility model also discloses a compressor, it includes foretell amortization lid subassembly.

The utility model discloses an oil return device can collect the lubricating oil from bearing stalk portion landing and derive from oil guide hole department to reduce the exhaust hole of lubricating oil flow direction amortization lid, avoid lubricating oil to mix the discharge with the air current in exhaust hole department, thereby reduced the discharge of lubricating oil in the compressor.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of a conventional muffler cover attached to a crankshaft in a vertical compressor.

FIG. 2 is a schematic diagram of an embodiment of an oil recovery device.

FIG. 3 is a schematic view of an embodiment of a sound attenuating cover assembly.

Fig. 4 is a sectional view of a muffler cover assembly installed in a compressor according to an embodiment.

FIG. 5 is a schematic view of an oil return device according to the second embodiment.

Fig. 6 is a plan view of the oil returning device according to the second embodiment.

Fig. 7 is a sectional view taken along the line a-a in fig. 6.

Fig. 8 is a sectional view of the oil returning device of the second embodiment installed in the compressor.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Example one

Referring to fig. 2-4, the present invention discloses an oil return device, which includes a barrel, wherein the barrel in this embodiment is funnel-shaped, and in other embodiments, the barrel may be square (any oil receiving aperture is larger than the installation aperture). An oil receiving port 21 and an installation port 22 are arranged at two ends of the cylinder body, the caliber of the oil receiving port 21 is larger than that of the installation port 22, and the oil receiving port 21 is positioned above the installation port 22; the cylinder body can be sleeved and fixed outside the bearing through the mounting opening 22; the wall body 10 of the cylinder is provided with an oil guide hole 11. Through such setting, the barrel can be established outside the stalk portion of fixing at the bearing, and the barrel with the bearing stalk portion is interference fit for lubricating oil that makes from the bearing stalk portion landing can gather in the barrel, lubricating oil then follows oil guide hole 11 flows out, when the installation, will oil guide hole 11 keep away from the exhaust hole 41 of amortization lid as far as possible, makes the lubricating oil that flows out from oil guide hole 11 can avoid lubricating oil to flow to exhaust hole 41 department as far as possible.

In this embodiment, the cross section of the cylinder is arc-shaped, so that the radius of the cylinder in the direction from the oil receiving port 21 to the mounting port 22 is gradually reduced, so that the lubricating oil is accumulated in the cylinder. In other embodiments, the cross-section of the barrel may be planar. The cylinder body and the included angle of the plane of the mounting opening is more than 90 degrees and less than 180 degrees. The oil guide hole should be located as far away from the exhaust hole as possible to reduce the possibility of the lubricating oil flowing to the exhaust hole.

The utility model also discloses a amortization lid subassembly, including amortization lid body 40 and oil return device, oil return device's lower extreme with the upper end of amortization lid body 40 is fixed. And after flowing out of the oil guide hole, the lubricating oil flows to the refrigerant through hole of the bearing flange part through the surface of the silencing cover and then flows back to the oil pool.

The utility model also discloses a compressor, it includes foretell amortization lid subassembly.

Example two

Referring to fig. 5 to 8, in the present embodiment, the oil return device further includes a ring 30, in order to better assemble the oil return device, an inwardly protruding ring 30 is disposed at one end of the cylinder, an outer edge of the ring 30 is adjacent to the wall 10, and the mounting opening 22 is formed at an inner edge of the ring 30. The oil guide hole 11 is disposed at the joint of the ring 30 and the wall body 10, so that the lubricating oil can flow out of the oil guide hole 11 as soon as possible after sliding off the wall body 10. The ring 30 and the bearing handle portion are in interference fit, so that no gap exists between the ring 30 and the bearing handle portion, lubricating oil is accumulated, meanwhile, the rigidity of the mounting opening 22 is enhanced due to the arrangement of the ring 30, the mounting opening 22 of the cylinder body is not prone to deformation, and the oil leakage situation is avoided. In the assembling process, the mounting port 22 can be sleeved at the upper end of the bearing handle, and then the cylinder is knocked by a rubber hammer to move down to the target position of the bearing handle.

In order to accelerate the outflow of the lubricating oil, the oil guiding hole 11 is a long hole, and in other embodiments, the oil guiding hole may be a round hole, a square hole, or the like, as long as the function of passing the oil is achieved. The plurality of oil guiding holes 11 are arranged around the center of the mounting opening 22, but in other embodiments, the plurality of oil guiding holes may not be arranged around the center of the mounting opening, as long as the lubricating oil can smoothly flow out. The wall body 10 is provided with a plurality of oil guide holes 11; the wall body 10 is provided with a protruding portion 12, the protruding portion 12 protrudes toward the central axis of the cylinder, and the protruding portion 12 is located between the two oil guide holes 11. The protruding portion 12 is formed with a protruding body 121 and two slopes 122, two sides of the protruding body 121 are respectively connected with the two slopes 122, and the slopes 122 are adjacent to the inner surface of the wall 10. The arrangement of the protruding parts 12 makes the lubricating oil fall into the inner wall of the cylinder body, and then the lubricating oil flows together through the slope 122 of the protruding parts 12, and the lubricating oil sliding down from the two adjacent protruding parts 12 flows faster to the oil guide hole 11 than before after converging.

Other arrangements of this embodiment are the same as those of the first embodiment.

The utility model discloses an oil return device can collect the lubricating oil from bearing stalk portion landing and derive from oil guide hole department to reduce the exhaust hole of lubricating oil flow direction amortization lid, avoid lubricating oil to mix the discharge with the air current in exhaust hole department, thereby reduced the discharge of lubricating oil in the compressor.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting of the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims (10)

1. An oil return device, its characterized in that: the oil receiving port is positioned above the mounting port; the cylinder body can be sleeved and fixed outside the bearing through the mounting opening; the wall body of barrel is provided with leads the oilhole.

2. The oil return device according to claim 1, wherein: the cross section of the cylinder body is arc-shaped.

3. The oil return device according to claim 1, wherein: the wall body is characterized by further comprising a circular ring, wherein an inward protruding circular ring is arranged at one end of the cylinder body, the outer edge of the circular ring is adjacent to the wall body, and the inner edge of the circular ring is provided with the mounting opening.

4. An oil return device according to claim 3, characterized in that: the oil guide hole is formed in the joint of the circular ring and the wall body.

5. The oil return device according to claim 1, wherein: the oil guide hole is a long hole.

6. The oil return device according to claim 1, wherein: the plurality of oil guide holes are arranged around the circle center of the mounting hole.

7. The oil return device according to claim 1, wherein: the wall body is provided with a plurality of oil guide holes; the wall body is provided with the bulge, the bulge to the central axis protrusion of barrel, the bulge is located two lead between the oilhole.

8. The oil return device according to claim 7, wherein: the convex part is formed with a convex body and two slopes, the two sides of the convex body are respectively connected with the two slopes, and the slopes are adjacent to the inner surface of the wall body.

9. A sound attenuating cap assembly, comprising: the oil return device comprises a silencing cover body and the oil return device of any one of the claims 1 to 8, wherein the lower end of the cylinder body is fixed with the upper end of the silencing cover body.

10. A compressor, characterized by: including the acoustic cover assembly of claim 9.

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