CN215373064U

CN215373064U - Oil-gas separator and air conditioner

Info

Publication number: CN215373064U
Application number: CN202120844323.4U
Authority: CN
Inventors: 崔渊博; 张铁钢; 崔春雷; 劳同炳
Original assignee: GD Midea Heating and Ventilating Equipment Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Current assignee: GD Midea Heating and Ventilating Equipment Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-12-31
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses an oil-gas separator, which comprises a cylinder body and an air inlet pipe arranged on the cylinder body, wherein the cylinder body is provided with an air inlet; the air inlet pipe comprises a pipe body and a turned edge, the turned edge is arranged on the outer surface of the pipe body in a surrounding mode and is close to the air outlet of the pipe body, the air outlet is communicated with the air inlet, an eccentric distance is reserved between the central line of the air outlet and the central line of the cylinder body, and the turned edge is arranged on the outer surface of the cylinder body. An air conditioner comprises a compressor and the oil-gas separator, wherein the compressor is provided with an air outlet pipe, and a first inlet end of the air inlet pipe is connected with the air outlet pipe. The oil-gas separator and the air conditioner have the advantages of long service life, low manufacturing cost, high reliability and the like.

Description

Oil-gas separator and air conditioner

Technical Field

The utility model belongs to the technical field of air conditioner manufacturing, and particularly relates to an oil-gas separator and an air conditioner.

Background

The axis of the air inlet pipe of the centrifugal oil separator deviates from the axis of the cylinder of the centrifugal oil separator, the refrigerant containing oil drops is deflected on the inner wall surface of the cylinder and spirally descends, the oil drops with larger weight are separated from the gaseous refrigerant under the action of larger centrifugal force and are gathered at the bottom of the centrifugal oil separator, and the gaseous refrigerant flows out from the air outlet pipe (still contains a small amount of micro oil drops). Compared with the traditional filtering type oil separator, the centrifugal type oil separator reduces the number of parts and the volume of the oil separator, and is a new development direction of the oil separator. However, the air inlet pipe of such a centrifugal oil separator is often inserted into the cylinder in an inclined manner, and the axis of the air inlet pipe deviates from the axis of the cylinder, so that the opening hole in the cylinder is an oval hole which is difficult to turn up. At present, the oval hole cannot be flanged, so that the centrifugal oil separator (in a cantilever state) with large vibration is easy to fatigue fracture or leak at the position.

In addition, when the air inlet pipe obliquely inserted into the cylinder is brazed with the cylinder by adopting a tunnel furnace, the penetration depth of the welding flux is only the wall thickness of the cylinder (the wall thickness of a stainless steel cylinder is generally 0.8-1.5mm), the corrosion resistance is low, the requirements on the weld quality and the precision of the oval hole are extremely high, the reject ratio and the rejection rate of a product are high, and the leakage risk of the air conditioner is increased.

For a stainless steel oil separator, if argon arc welding or laser welding is adopted, the difficulty of automatically welding irregular welding seams is high, and the welding seams are the weak points of the whole oil separator. And the stainless steel oil separator and the copper bush must be welded by a tunnel furnace, if the air inlet pipe and the cylinder body are welded by argon arc welding or laser welding, the same oil separator needs to adopt different welding modes, the efficiency is low, and the cost is increased.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the utility model provides an oil-gas separator, which comprises a cylinder and a gas inlet pipe arranged on the cylinder;

an air inlet is arranged on the cylinder body; the air inlet pipe comprises a pipe body and a turned edge, the turned edge is arranged on the outer surface of the pipe body in a surrounding mode and is close to the air outlet of the pipe body, the air outlet is communicated with the air inlet, an eccentric distance is reserved between the central line of the air outlet and the central line of the cylinder body, and the turned edge is arranged on the outer surface of the cylinder body.

The oil-gas separator disclosed by the embodiment of the utility model has the advantages of long service life, low manufacturing cost, high reliability and the like.

In some embodiments, the minimum distance between the outer edge of the flange and the edge of the air inlet hole is larger than the wall thickness of the cylinder.

In some embodiments, the distance between the outer edge of the flange and the edge of the air inlet hole is 2mm-10 mm.

In some embodiments, the outer surface of the cylinder body comprises an installation area, the installation area is provided with the air inlet hole, the flanging is attached to the installation area, and the shape of the flanging is matched with that of the installation area.

In some embodiments, the end of the tube at the air outlet is flush with the outer surface of the barrel.

In some embodiments, the flange and the outer surface of the barrel are joined by tunnel furnace brazing.

In some embodiments, the air inlet hole is an eccentric hole, a center line of the eccentric hole coincides with a center of the air outlet, and a diameter of the eccentric hole is greater than or equal to an inner diameter of the air inlet pipe.

In some embodiments, the air intake holes are concentric holes.

In some embodiments, the edge of the air inlet hole is located outside the edge of the air outlet hole.

An air conditioner is characterized by comprising a compressor and an oil-gas separator according to an embodiment of the utility model: an air outlet pipe is arranged on the compressor; the air inlet pipe is communicated with the air outlet pipe.

The air conditioner provided by the embodiment of the utility model has the advantages of long service life, low manufacturing cost, high reliability and the like.

Drawings

Fig. 1 is a schematic view of an oil separator according to an embodiment of the present invention.

Fig. 2 is a schematic disassembled view of the cylinder and the air inlet pipe according to the embodiment of the utility model.

FIG. 3 is a schematic view of the location of an eccentric hole on a cylinder according to an embodiment of the utility model.

FIG. 4 is a schematic view of an eccentric hole mated with an intake pipe in accordance with an embodiment of the present invention.

FIG. 5 is a schematic view of the location of the centering hole on the barrel according to an embodiment of the utility model.

FIG. 6 is a schematic illustration of the alignment hole mating with the air inlet tube, in accordance with an embodiment of the present invention.

Fig. 7 is a schematic view of applying solder paste on the flange and the outer surface of the barrel according to an embodiment of the present invention.

FIG. 8 is a schematic view of a weld ring placed on the outer ring of the cuff of an air inlet tube in accordance with an embodiment of the present invention.

Reference numerals: 100. an oil-gas separator; 1. a barrel; 11. an air inlet; 111. an eccentric hole; 112. aligning the center hole; 12. an installation area; 2. an air inlet pipe; 21. a pipe body; 22. an air outlet; 23. flanging; 24. an inlet straight line section; 25. an arc-shaped section; 26. an outlet straight line section; 3. a solder paste; 4. and (7) welding a ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

An oil separator 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 8.

As shown in fig. 1 to 8, an oil separator 100 according to an embodiment of the present invention includes a cylinder 1 and an intake pipe 2 installed at the cylinder. An air inlet hole 11 is arranged on the cylinder body 1. The intake duct 2 includes a tubular body 21 and a flange 23. The flange 23 is provided around the outer surface (outer circumferential surface) of the tube body 21 and is close to the air outlet 22 of the tube body 21. The air outlet 22 communicates with the air inlet 11. The center line of the air outlet 22 and the center line of the cylinder 1 have an eccentricity. The flange 23 is provided on the outer surface of the cylinder 1.

Because the air inlet pipe of the original centrifugal oil-gas separator is obliquely inserted into the cylinder of the centrifugal oil-gas separator, the central line of the air inlet pipe deviates from the central line of the cylinder, so that the air inlet hole in the cylinder is an oval hole which is difficult to turn over. Therefore, the air inlet pipe of the oil-gas separator with large vibration, which is arranged close to the compressor, is easy to fatigue fracture or leak at the position of the air inlet hole on the cylinder.

The oil-gas separator 100 according to the embodiment of the utility model arranges the flanging 23 on the tube body 21, and arranges the flanging 23 around the outer surface of the tube body 21, and arranges the flanging 23 on the outer surface of the cylinder body 1. The structure of the air inlet pipe 2 can be enhanced, and the risk of fatigue fracture of the air inlet pipe 2 is reduced. That is to say, make intake pipe 2 be connected with barrel 1 through turn-ups 23, can increase the joint strength of intake pipe 2 and barrel 1 to can reduce intake pipe 2 from the risk with the junction fatigue fracture of barrel 1, and then can increase the life of oil and gas separator 100.

In addition, because the air inlet pipe 2 can be connected to the barrel 1 through the turned-over edge 23, the air inlet pipe does not need to be obliquely inserted into the air inlet hole 11 on the barrel 1. It is no longer necessary to precisely control the size of the gap between the intake pipe 2 and the intake hole 11. Therefore, the requirement on the machining precision of the air inlet hole 11 in the cylinder 1 can be lowered, the difficulty, the machining cost and the rejection rate of machining the air inlet hole 11 can be lowered, and the manufacturing cost of the oil-gas separator 100 can be lowered.

Moreover, since the air inlet pipe 2 can be connected to the cylinder 1 through the flange 23, it is possible to control the penetration depth (solder penetration) of solder by controlling the minimum distance from the outer edge of the flange 23 to the edge of the air inlet hole 11. Therefore, the corrosion resistance of the welding line between the air inlet pipe 2 and the cylinder body 1 in the external use environment can be improved, and meanwhile, the leakage risk of the medium in the cylinder body 1 at the welding line is reduced, so that the reliability of the oil-gas separator 100 can be improved.

Therefore, the oil-gas separator 100 according to the embodiment of the utility model has the advantages of long service life, low manufacturing cost, high reliability and the like.

As shown in fig. 1 and 2, an oil separator 100 according to an embodiment of the present invention includes a cylinder 1 and an intake pipe 2 installed at the cylinder. An air inlet hole 11 is arranged on the cylinder body 1. The intake duct 2 includes a tubular body 21 and a flange 23. The flange 23 is provided around the outer surface (outer circumferential surface) of the tube body 21 and is close to the air outlet 22 of the tube body 21. The flange 23 is provided on the outer surface of the cylinder 1.

The air outlet 22 communicates with the air inlet 11. The center line of the air outlet 22 and the center line of the cylinder 1 have an eccentricity. That is, the projection of the center line of the cylinder 1 on the preset plane and the projection of the center line of the air outlet 22 on the preset plane do not intersect and have a certain distance, and the preset plane may be a plane perpendicular to the center line of the cylinder.

It should be noted that the body 21 of the inlet pipe 2 may be configured as a bent pipe including an inlet straight line segment 24, an arc segment 25 and an outlet straight line segment 26 connected in sequence. While the inlet pipe 2 may also be arranged as a straight pipe (not shown in the figure).

As shown in FIG. 1, the minimum distance A between the outer edge of the flange 23 and the edge of the air inlet hole 11 is larger than the wall thickness of the cylinder 1. This makes it possible to increase the solder penetration depth (solder penetration depth) of the weld between the intake pipe 2 and the cylinder 1, which corresponds to increasing the solder penetration depth (solder penetration depth) from the wall thickness of the cylinder 1 to the width of the flange 23 (the distance from the outer edge of the flange 23 to the edge of the intake port 11). Therefore, the corrosion resistance of the welding line in the external use environment can be effectively improved, the leakage risk of the medium in the cylinder body 1 at the welding line is effectively reduced, and the reliability of the oil-gas separator 100 can be effectively improved.

Specifically, the distance between the outer edge of the flanging 23 and the edge of the air inlet hole 11 is 2mm-10 mm. Therefore, the corrosion resistance of the welding line between the air inlet pipe 2 and the cylinder body 1 in the external use environment can be reliably ensured, meanwhile, the leakage risk of the medium in the cylinder body 1 at the welding line can be reliably ensured to be reduced, and the reliability of the oil-gas separator 100 can be further ensured to be improved.

As shown in fig. 1 and 2, the outer surface of the cylinder 1 includes a mounting area 12, and the mounting area 12 is opened with an air inlet 11. The flange 23 abuts on the mounting region 12. The shape of the flange 23 is adapted to the shape of the mounting area 12. From this can make turn-ups 23 more closely laminate on the installing zone 12 of barrel 1 to enable the solder evenly distributed between the surface of turn-ups 23 and barrel 1, and then can reduce the solder quantity, improve the welding strength between turn-ups 23 and the barrel 1, increase the corrosion-resistant ability of the welding seam between intake pipe 2 and the barrel 1 in external service environment, reduce the risk of revealing of the medium in the barrel 1 in welding seam department simultaneously.

As shown in fig. 4 and 6, the end of the tube body 21 at the air outlet 22 is flush with the outer surface of the cylinder 1. Therefore, the air outlet 22 can be tightly connected with the air inlet 11, so that the air in the air inlet pipe 2 can more smoothly flow into the cylinder 1 and is deflected on the inner wall surface of the cylinder 1, and the influence of the connection position of the air outlet 22 and the air inlet 11 on the air flow can be reduced as much as possible.

Alternatively, the outer edge of the expanded surface of the turned-up edge 23 may be provided in a rounded rectangle, enabling the outer edge of the turned-up edge 23 to relatively more approximate the shape of the oval air outlet 22. So that the distance between the outer edge of the turned-over edge 23 and the circumferential direction of the edge of the oval air outlet 22 can be made relatively uniform, and solder or solder rings can be saved. Meanwhile, the four corners of the rounded rectangle are rounded corners, so that the welding ring can be conveniently placed on the outer edge of the turned edge 23. In addition, compared with the method that the outer edge of the unfolded surface of the flanging 23 is set to be oval, the processing difficulty of the outer edge of the flanging 23 can be reduced, and the processing cost is reduced.

Preferably, the flange 23 and the outer surface of the cylinder 1 are connected by tunnel furnace brazing. That is, the flange 23 of the intake pipe 2 is welded to the outer surface of the cylinder 1 by tunnel furnace brazing. All welded junctions on the oil-gas separator 100 can be welded at one time by adopting tunnel furnace brazing, the efficiency is high, and the consistency of welding seams is good.

As shown in fig. 7 and 8, when the flange 23 and the outer surface of the cylinder 1 are brazed by using a tunnel furnace, the flange 23 and/or the outer surface of the cylinder 1 may be coated with solder paste 3 (i.e., one or both of the solder paste and the solder paste are coated), or a solder ring 4 may be placed on the outer ring of the flange 23 of the air inlet pipe 2. The material of the intake pipe 2 may be the same as or different from that of the cylinder 1. The material of the air inlet pipe 2 can be carbon steel, stainless steel, copper and other materials which can be brazed by a tunnel furnace.

As shown in fig. 3 and 4, the intake hole 11 is an eccentric hole 111. The center line of the eccentric hole 111 coincides with the center of the air outlet 22. Wherein, the diameter of the eccentric hole 111 is larger than or equal to the inner diameter of the air inlet pipe 2.

Since the eccentric hole 111 of the cylinder 1 is substantially oval in shape. While the end of the air outlet 22 of the air inlet tube 2 is flush with the outer surface of the cylinder 1, the shape of the air outlet 22 is also substantially oval. Therefore, the air outlet 22 of the air inlet pipe 2 can be aligned with the eccentric hole 111, so that the diameter of the eccentric hole 111 can be equal to the inner diameter of the air inlet pipe 2 or larger than the inner diameter of the air inlet pipe 2.

When the diameter of the eccentric hole 111 is equal to the inner diameter of the air inlet pipe 2, the hole wall of the eccentric hole 111 and the hole wall of the air inlet pipe 2 can be in smooth transition, so that the influence of the joint of the air outlet 22 and the air inlet hole 11 on the gas flow state can be reduced. In addition, under the condition that the size of the flange 23 outside the air inlet pipe 2 is fixed, the minimum distance between the outer edge of the flange 23 and the edge of the air inlet hole 11 is relatively large, so that the penetration depth (the penetration depth of solder) of the welding seam between the air inlet pipe 2 and the cylinder body 1 is large, the corrosion resistance of the welding seam in the external use environment can be effectively improved, the leakage risk of a medium in the cylinder body at the welding seam is reduced, and the reliability of the oil-gas separator 100 can be effectively improved.

When the diameter of the eccentric hole 111 is larger than the inner diameter of the air inlet pipe 2, the air in the air inlet pipe 2 can flow into the cylinder 1 more smoothly and is deflected on the inner wall surface of the cylinder 1, so that the problem that the outer surface of a part of the cylinder at the joint of the air outlet 22 and the air inlet hole 11 disturbs an air flow field and obstructs air flow when the diameter of the eccentric hole 111 is smaller than the inner diameter of the air inlet pipe 2 is avoided, and the influence of the joint of the air outlet 22 and the air inlet hole 11 on air flow can be reduced as much as possible.

As shown in fig. 5 and 6, the air intake holes 11 are aligned with the center hole 112. The center line of the centering hole 112 intersects and is perpendicular to the center line of the cylinder 1. The center hole 112 is convenient to process, so that the difficulty of processing the air inlet hole 11 on the cylinder 1 can be further reduced, and the manufacturing cost of the oil-gas separator 100 is further reduced.

Preferably, the edges of the air intake holes 11 are located outside the edges of the air outlet 22. The shape of the centering hole 112 on the cylinder body 1 is substantially elliptical. While the end of the air outlet 22 of the inlet pipe 2 is flush with the outer surface of the cylinder 1, the shape of the air outlet 22 is substantially oval. The centering hole 112 and the air outlet 22 of the air inlet pipe 2 cannot be completely aligned. Therefore, the edge of the air inlet hole 11 is positioned at the outer side of the edge of the air outlet 22, so that the air in the air inlet pipe 2 can flow into the barrel 1 more smoothly and is deflected on the inner wall surface of the barrel 1, and the phenomenon that the outer surface of part of the barrel at the joint of the air outlet 22 and the air inlet hole 2 disturbs an air flow field and obstructs air flow when the edge of the air inlet hole 11 is positioned at the inner side of the edge of the air outlet 22 is avoided. Thereby reducing the influence of the joint of the air outlet 22 and the air inlet 11 on the air flow as much as possible.

An air conditioner according to an embodiment of the present invention will be described with reference to fig. 1 to 8.

As shown in fig. 1 to 8, the air conditioner according to the embodiment of the present invention includes a compressor and an oil-gas separator 100 according to the embodiment of the present invention, wherein an air outlet pipe is provided on the compressor, and an air inlet pipe 2 is communicated with the air outlet pipe.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific 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 disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. An oil and gas separator, comprising:

the air inlet hole is formed in the cylinder body; and

the air inlet pipe is installed on the barrel and comprises a pipe body and a turned edge, the turned edge is arranged on the outer surface of the pipe body in a surrounding mode and is close to the air outlet of the pipe body, the air outlet is communicated with the air inlet, an eccentric distance is reserved between the central line of the air outlet and the central line of the barrel, and the turned edge is arranged on the outer surface of the barrel.

2. An oil separator as in claim 1, wherein the minimum distance between the outer edge of the flange and the edge of the air inlet hole is larger than the wall thickness of the cylinder.

3. An oil separator as claimed in claim 2, wherein the distance from the outer edge of the flange to the edge of the air inlet hole is 2mm to 10 mm.

4. An oil-gas separator as in claim 1, wherein the outer surface of the cylinder includes a mounting area, the mounting area is provided with the air inlet, the flange is attached to the mounting area, and the shape of the flange is adapted to the shape of the mounting area.

5. An oil separator as in claim 4 wherein the end of the tube at the gas outlet is flush with the outer surface of the cylinder.

6. An oil separator as claimed in claim 1, wherein the flange and the outer surface of the cylinder are joined by brazing in a tunnel furnace.

7. An oil-gas separator as in claim 1, wherein the gas inlet hole is an eccentric hole, a center line of the eccentric hole coincides with a center of the gas outlet hole, and a diameter of the eccentric hole is greater than or equal to an inner diameter of the gas inlet pipe.

8. An oil separator as in claim 1 wherein the gas inlet hole is a concentric hole.

9. An oil separator as in claim 8, wherein the rim of the air inlet hole is located outside the rim of the air outlet hole.

10. An air conditioner, comprising:

the compressor is provided with an air outlet pipe; and

the oil and gas separator of any of claims 1-9, the gas inlet pipe being in communication with the gas outlet pipe.