CN220705943U - Oil-gas separation device and refrigeration equipment - Google Patents

Abstract

The application discloses an oil-gas separation device and refrigeration equipment. Comprises a shell, a baffle, a first refraction component and a second refraction component. The housing has an inlet for the inflow gas and an outlet for the outflow gas. The baffle sets up in the inner chamber of casing and separates the inner chamber of casing into first chamber and second chamber from first direction. The first chamber is in communication with the air inlet. The second cavity is communicated with the air outlet. The gas enters the first chamber from the gas inlet and flows in a second direction perpendicular to the first direction and bypasses the partition into the second chamber. The first baffle assembly is disposed in the first chamber to baffle gas entering the first chamber. The second baffling component is arranged in the second cavity to baffle the gas entering the second cavity. The second refraction assembly comprises at least two layers of bending plates which are arranged at intervals in a second direction. The bending plate comprises at least two plate bodies. Adjacent ones of the at least two plates are angularly connected to form a baffled oil filter passage. This application improves oil gas separation efficiency.

Description

Oil-gas separation device and refrigeration equipment

Technical Field

The application relates to the technical field of refrigeration, in particular to an oil-gas separation device and refrigeration equipment.

Background

In screw compressors, refrigeration oil lubrication is required between the rotors to reduce compressor noise, while refrigeration oil can reduce gas leakage during rotor engagement to improve compressor performance. The compressor discharge gas thus contains tiny droplets of refrigerant oil in addition to the vapor refrigerant. In screw rod units, an external oil-gas separation device is often adopted to separate gas-phase refrigerant and frozen oil droplets discharged by a compressor. After the frozen oil is separated, the frozen oil returns to the oil tank of the guide compressor to continue spraying liquid for lubrication, and the gas-phase refrigerant enters the condenser for condensation.

The separation efficiency of the oil-gas separation device has a great influence on the performance of the unit.

It should be noted that the statements in this background section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

Disclosure of Invention

The application provides an oil-gas separation device and refrigeration equipment to improve oil-gas separation device's separation efficiency.

The first aspect of the present application provides an oil-gas separation device, comprising:

a housing having an inlet for inflow gas and an outlet for outflow gas;

the baffle is arranged in the inner cavity of the shell and divides the inner cavity of the shell into a first cavity and a second cavity from the first direction, the first cavity is communicated with the air inlet, the second cavity is communicated with the air outlet, and air enters the first cavity from the air inlet and flows along a second direction perpendicular to the first direction and bypasses the baffle to enter the second cavity;

the first baffling component is arranged in the first cavity to baffle the gas entering the first cavity; and

the second flow-deflecting component is arranged in the second cavity to deflect the gas entering the second cavity, and comprises at least two layers of bending plates which are arranged at intervals in the second direction, wherein each bending plate comprises at least two plate bodies, and adjacent plate bodies in the at least two plate bodies are connected at an angle to form a flow-deflecting oil-filtering channel.

In some embodiments, the at least two plates include a first plate and a second plate that are perpendicular to each other.

In some embodiments, the bent portion of the bent plate is provided with an oil passing hole.

In some embodiments, the oil-gas separation device further comprises an oil guide plate connected with the bending part of the bending plate positioned at the bottommost layer in the at least two layers of bending plates, and the oil guide plate extends along the second direction.

In some embodiments, a plurality of oil passing holes are arranged at intervals at the bending position of the bending plate.

In some embodiments, the first baffle assembly includes at least two baffles spaced apart in the second direction, the baffles including a gap disposed adjacent one side of the inner wall of the housing through which gas flows in the second direction.

In some embodiments, the indentations of adjacent ones of the at least two baffles are staggered.

In some embodiments, a baffle of the at least two baffles remote from the air inlet is connected to an end of the baffle.

In some embodiments, the oil and gas separation device further includes an oil baffle disposed between the second baffle assembly and the bottom of the housing.

In some embodiments, one end of the oil baffle is connected to the inner wall of the housing, and a gap is provided between the other end of the oil baffle and the inner wall of the housing.

In some embodiments, the oil and gas separation device further comprises a gas equalization plate disposed between the second baffle assembly and the gas outlet.

In some embodiments, the oil and gas separation device further includes a screen disposed between the second baffle assembly and the gas outlet.

A second aspect of the present application provides a refrigeration apparatus comprising a compressor and the above-described oil-gas separation device, wherein an exhaust port of the compressor is connected to an intake port of the oil-gas separation device.

Based on the technical scheme that this application provided, oil gas separation device includes casing, baffle, first refraction subassembly and second refraction subassembly. The housing has an inlet for the inflow gas and an outlet for the outflow gas. The baffle sets up in the inner chamber of casing and separates the inner chamber of casing into first chamber and second chamber from first direction. The first chamber is in communication with the air inlet. The second cavity is communicated with the air outlet. The gas enters the first chamber from the gas inlet and flows in a second direction perpendicular to the first direction and bypasses the partition into the second chamber. The first baffle assembly is disposed in the first chamber to baffle gas entering the first chamber. The second baffling component is arranged in the second cavity to baffle the gas entering the second cavity. The second refraction assembly comprises at least two layers of bending plates which are arranged at intervals in a second direction. The bending plate comprises at least two plate bodies. Adjacent ones of the at least two plates are angularly connected to form a baffled oil filter passage. The oil-gas separation device of this application embodiment divide into first chamber and second chamber with the inner chamber of casing through setting up the baffle, can flow at first chamber then flow at the second chamber after the inner chamber of gas admission casing like this, and whole flow path forms U type route, and first intracavity sets up first deflection subassembly, and the second intracavity sets up second deflection subassembly 2. And the second baffling component forms a baffling oil filtering channel by arranging the baffling plate, so that gas passes through the baffling of the first baffling component and the baffling of the baffling oil filtering channel of the second baffling component to collide fully, and the oil-gas separation efficiency is improved. The improvement of the oil-gas separation efficiency can prevent lubricating oil from entering the heat exchangers such as the condenser, and further improve the heat transfer efficiency of the heat exchangers and the energy efficiency of the unit. And the oil-gas separation efficiency is improved, so that the phenomenon that the lubrication of compressor parts is insufficient due to oil shortage is effectively avoided, and the service life of the compressor is prolonged.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a schematic perspective view of an oil-gas separation device according to some embodiments of the present application.

Fig. 2 is a schematic structural view of the first bending plate in fig. 1.

Fig. 3 is a schematic structural view of the second bending plate in fig. 1.

Fig. 4 is a schematic structural view of the third bending plate in fig. 1.

FIG. 5 is a flow path of a vapor phase refrigerant of the second chamber of the oil and gas separation device shown in FIG. 1.

FIG. 6 is a flow path of a vapor phase refrigerant of the first chamber of the oil and gas separation device shown in FIG. 1.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways and the spatially relative descriptions used herein are construed accordingly.

As mentioned above, the separation efficiency of the oil-gas separation device has a large influence on the performance of the unit. If the separation efficiency of the oil-gas separation device is low, the frozen oil can enter the refrigerant circulation and adhere to the wall surfaces of the heat exchange tubes of the evaporator and the condenser, so that a layer of oil film is formed to prevent heat exchange, and the heat exchange efficiency of the heat exchanger and the energy efficiency of the unit are reduced. And the parts of the compressor may be insufficiently lubricated due to oil shortage, resulting in damage to the compressor.

In view of this problem, referring to fig. 1 to 6, an embodiment of the present application proposes an oil-gas separation device including a housing 3, a partition 6, a first refraction assembly 1, and a second refraction assembly 2. The housing 3 has an inlet 31 for the inflow gas and an outlet 32 for the outflow gas. The partition 6 is provided in the inner cavity of the housing 3 and divides the inner cavity of the housing 3 from the first direction X into a first cavity 1a and a second cavity 1b. The first chamber 1a communicates with the air intake port 31. The second chamber 1b communicates with the air outlet 32. The gas enters the first chamber 1a from the gas inlet 31 and flows in a second direction Y perpendicular to the first direction X and bypasses the partition 6 and enters the second chamber 1b. The first baffle assembly 1 is disposed in the first chamber 1a to baffle gas entering the first chamber 1 a. The second baffle assembly 2 is disposed in the second chamber 1b to baffle the gas entering the second chamber 1b. The second refractive assembly 2 comprises at least two layers of bending plates arranged at intervals in the second direction Y. The bending plate comprises at least two plate bodies. Adjacent ones of the at least two plates are angularly connected to form a baffled oil filter passage.

According to the oil-gas separation device, the inner cavity of the shell 3 is divided into the first cavity 1a and the second cavity 1b by the partition plate 6, so that gas can flow in the first cavity 1a and then flow in the second cavity 1b after entering the inner cavity of the shell 3, a U-shaped path is formed by the whole flow path, the first refraction component 1 is arranged in the first cavity 1a, and the second refraction component 2 is arranged in the second cavity 1b. And the second baffle component 2 forms a baffle oil filtering channel by arranging a baffle plate, so that gas passes through the baffle of the first baffle component and the baffle of the baffle oil filtering channel of the second baffle component to collide fully, and the oil-gas separation efficiency is improved. The improvement of the oil-gas separation efficiency can prevent lubricating oil from entering the heat exchangers such as the condenser, and further improve the heat transfer efficiency of the heat exchangers and the energy efficiency of the unit. And the oil-gas separation efficiency is improved, so that the phenomenon that the lubrication of compressor parts is insufficient due to oil shortage is effectively avoided, and the service life of the compressor is prolonged.

It should be noted that, referring to fig. 5, in operation of the oil-gas separation device of the embodiment of the present application, gas enters the first chamber 1a through the gas inlet 31 and enters the second chamber 1b after bypassing the partition 6, and the flow path of the gas is substantially U-shaped. In the above description, the gas enters the first chamber 1a from the gas inlet 31 and flows in the second direction Y perpendicular to the first direction X, and bypasses the partition 6 and enters the second chamber 1b. The gas flowing in the second direction Y in the first chamber 1a as referred to herein means that the general flow direction of the gas is the second direction Y, but the flow path of the gas is not restricted to be the strict second direction Y. Referring to fig. 1 and 6, since the first flow-breaking assembly 1 is provided in the first chamber 1a, the gas must be deflected by the first flow-breaking assembly 1 when flowing in the first chamber 1a, and the flow path thereof is bent, not unchanged.

Deflection is to change the direction of the gas and to make the gas flow in a zigzag manner. In the baffling process, the flow path of the gas is prolonged, the flow speed is reduced, and the collision is increased, so that the carrying degree of the gas on the oil liquid can be reduced, and the oil-gas separation effect is realized.

Referring to fig. 1, a second folding assembly 2 of the present embodiment includes at least two layers of folding plates disposed at intervals in a second direction Y. Fig. 1 exemplarily shows that the second bending assembly 2 comprises three bending plates, a first bending plate 21, a second bending plate 22 and a third bending plate 23, respectively. Referring to fig. 2, the first bending plate 21 includes at least two plate bodies provided in a bent manner. In one embodiment, the first bending plate 21 includes a first plate body 211, a second plate body 212, a third plate body 213, a fourth plate body 214, and a fifth plate body 215. Two adjacent plate bodies are arranged at an angle. Thus, when the gas passes through the first chamber 1a and bypasses the partition plate 6 to enter the second chamber 1b, the gas passes through the first bending plate 21, and the flow path of the gas flows upwards along with the bending of the plurality of positions of the first bending plate 21, so that the impact between the gas and the bending plate is increased, and oil drops trapped in the gas are easier to separate. In some embodiments, the more bends the bend plate, the higher the oil-gas separation efficiency.

To increase the degree of bending of the flow channels during gas flow to further increase separation efficiency, in some embodiments, at least two plates include a first plate and a second plate that are perpendicular to each other. The first plate body and the second plate body are mutually perpendicular, so that, for example, the first plate body is horizontally arranged, the second plate body is vertically arranged, gas can directly collide with the second plate body after flowing through the first plate body so as to flow upwards, the flowing angle of the gas is greatly changed, and then the separation efficiency is improved.

In other embodiments, each of at least two adjacent plates are perpendicular to each other. Thus, the oil-gas separation efficiency is higher.

Referring to fig. 5, in one embodiment, a first bending plate 21, a second bending plate 22, and a third bending plate 23 are sequentially disposed in the second direction Y. This results in a first baffled oil filter passage F1 between the first and second baffle plates 21, 22 and a second baffled oil filter passage F2 between the second and third baffle plates 22, 23. Of course, in other embodiments, more than three layers of bending plates can be provided according to the size and volume of the shell to improve the efficiency and effect of oil separation.

Referring to fig. 2 to 4, in some embodiments, the bent portion of the bent plate is provided with an oil passing hole H. When gas flows in the baffling oil filtering channel, oil drops collide with the wall surface of the bending plate, so that the flow speed of the oil drops can be reduced, and meanwhile, the oil drops can be attached to the wall surface to be gathered into large oil drops, so that oil-gas collision separation is realized. Under the action of gravity and the blowing and winding action of air flow, oil drops flow downwards along the wall surface and are converged at the bending part of the baffle plate, and finally the oil drops drop downwards through the oil passing holes H to enter the bottom of the shell 3. For the refrigeration equipment, when the oil drops reach the bottom of the shell 3, the oil drops return to the oil tank of the compressor through the oil return pipe 9.

In some embodiments, the oil-gas separation device further comprises an oil guide plate 5 connected with the bending position of the bending plate positioned at the bottommost layer in the at least two layers of bending plates. The oil guide plate 5 extends in the second direction Y. As shown in fig. 1, the bottom of the first bending plate 21 is provided with an oil guide plate 5, and oil drops adhere to the wall surface of the oil guide plate 5 after passing through the oil holes H, and flow downwards under the guidance of the wall surface, so that the influence of air flow blowing on the drop of the oil drops can be avoided.

Referring to fig. 2 to 4, in some embodiments, a plurality of oil passing holes H are provided at the bent portion of the bent plate at intervals. The arrangement of the oil passing holes H increases the passing space of oil drops, and further improves the oil-liquid separation effect.

In some embodiments, the first baffle assembly 1 comprises at least two baffles spaced apart in the second direction Y. The baffle comprises a notch arranged near one side of the inner wall of the shell 1. The gas flows in the second direction Y through the gap. As shown in fig. 1, the first baffle assembly 1 includes a first baffle 11 and a second baffle 12 spaced apart in the second direction Y. The first and second baffle plates 11 and 12 may be flat plates. As shown in fig. 6, the gas flows downward through a plurality of baffles after entering the first chamber 1a through the gas inlet 31. Oil-gas separation is achieved by multiple baffling.

In some embodiments, as shown in fig. 6, the indentations of adjacent ones of the at least two baffles are staggered. This increases the length of the flow path of the air stream, so that the oil droplets collide with the wall surface, and the flow velocity of the oil droplets is reduced to thereby adhere to the wall surface for separation.

In some embodiments, a baffle of the at least two baffles remote from the air inlet 31 is connected to an end of the baffle 6. That is, the bottommost baffle is directly connected to the partition plate 6, so that the gas flows downward through the gap between the bottommost baffle and the inner wall of the housing 3 after passing through the bottommost baffle, further increasing the flow stroke and enhancing the separation effect.

In some embodiments, the oil and gas separation device further comprises an oil baffle 4 disposed between the second baffle assembly 2 and the bottom of the housing 1. Thus, the oil can gather on the oil baffle plate 4 and then flow into the bottom of the shell 1. The arrangement of the oil baffle plate 4 separates the air flow from the oil accumulation space at the bottom of the shell 1, so that the air flow is prevented from impacting the frozen oil collected at the bottom of the shell 1, and the liquid level is caused to fluctuate to generate foam. And can also prevent the liquid level fluctuation from influencing the stable running state of the liquid level meter or the oil level mirror.

As shown in fig. 1, one end of the oil baffle 4 is connected to the inner wall of the housing 1, and a gap is provided between the other end of the oil baffle 4 and the inner wall of the housing 1. The oil drops reach the oil accumulation space at the bottom of the shell through the gap under the action of gravity, and the frozen oil returns to the oil tank of the compressor through the oil return pipe 9.

In some embodiments, the oil and gas separation device further comprises a gas equalization plate 7 disposed between the second baffle assembly 2 and the gas outlet 32. The vapor-phase refrigerant passes through the vapor-phase plate 7, and small oil drops can be converged into large oil drops on the vapor-phase plate and drop under the action of gravity.

As shown in fig. 1, in some embodiments, the gas uniformity plate 7 includes a first gas uniformity plate 71 and a second gas uniformity plate 72 that are disposed at intervals. The air equalizing plate 7 is provided with air equalizing holes.

In some embodiments, the oil and gas separation device further comprises a screen 8 disposed between the second baffle assembly 2 and the gas outlet 32. The oil-gas mixture is subjected to oil-gas separation in the process of flowing through the filter screen 8, so that the oil quantity carried by a refrigerant is reduced, and the adverse effects of oil deposition on the overall efficiency, operation safety and reliability are reduced.

The embodiment of the application also provides refrigeration equipment, which comprises a compressor and the oil-gas separation device, wherein an exhaust port of the compressor is connected with an air inlet of the oil-gas separation device.

The structure and operation of the oil and gas separation device according to one embodiment of the present application will be described in detail with reference to fig. 1 to 6.

As shown in fig. 1, the oil-gas separation device of the present embodiment includes a housing 3, a first baffle assembly 1, a second baffle assembly 2, a partition 6, an oil baffle 4, an oil guide plate 5, a gas equalization plate 7, a filter screen 8, and an oil return pipe 9.

The housing 3 includes a housing body, an air inlet 31, an air outlet 32, a top cover 33, a bottom case 34, and a bracket 35. The shell body is a cylindrical shell. An air inlet channel and an air outlet channel are arranged on the shell body. The air inlet channel is connected to the shell body and is connected to the upper part of the shell body. The inner cavity of the intake passage forms an intake port 31. The air outlet channel is connected to the top cover 33, and forms the air outlet 32. The inlet opening of the housing 3 is thus arranged on the side wall and the outlet opening is arranged on the top wall of the housing 3.

The partition 6 is connected to the inner wall of the top cover 33 and extends downward. The partition 6 is an arc plate and divides the inner cavity of the housing 3 into a first cavity 1a and a second cavity 1b. The first chamber 1a and the second chamber 1b are located on both sides of the partition 6, respectively.

A first baffle assembly 1 is disposed within the first chamber 1 a. The first baffle assembly 1 comprises a first baffle 11 and a second baffle 12. The first baffle plate 11 is connected with the baffle plate 6 and the shell 3, and a first notch is arranged between the first baffle plate 11 and the inner wall of the shell 3. Similarly, the second baffle 12 is connected to the partition 6 and the housing 3, and a second gap is also provided between the second baffle 12 and the inner wall of the housing 3. In order to form the baffling channel, the first notch and the second notch are arranged in a staggered mode. As shown in fig. 6, when the air flow passes through the first chamber 1a, the air flow passes through the baffling channel formed by the first baffling plate 11 and the second baffling plate 12 to realize oil-gas separation.

A second baffle assembly 2 is disposed within the second chamber 1b. The second deflector assembly 2 includes a first deflector 21, a second deflector 22 and a third deflector 23. As shown in fig. 5, a first baffling oil filtering passage F1 is formed between the first and second bending plates 21 and 22, and a second baffling oil filtering passage F2 is formed between the second and third bending plates 22 and 23.

As shown in fig. 1, the first gas equalizing plate 71 is at the same height as the plate body of the third bending plate 23 and is connected to the plate body of the third bending plate 23. The second gas-equalizing plate 72 is connected to the partition plate 6 and the housing 3 and is disposed above the first gas-equalizing plate 71.

As shown in fig. 5, the gas-phase refrigerant carries frozen oil drops through the second refraction component 2, the oil drops collide with the wall surface, the flow velocity of the oil drops is reduced, meanwhile, the oil drops are attached to the wall surface and gathered into large oil drops to realize oil-gas collision separation, the oil drops flow downwards along the wall surface and gather at the bending position of the bending plate under the action of gravity and air current blowing and winding, and finally, the large oil drops downwards reach the oil baffle plate 4 through the oil passing holes H. As shown in fig. 1, a gap is formed on one side of the oil baffle 4, oil drops reach the oil accumulation space at the bottom of the shell through the gap under the action of gravity, and frozen oil returns to the oil tank of the compressor through an oil return pipe 9. The bottom of the first bending plate 21 is provided with a vertically arranged oil guide plate 5, oil drops are adhered to the wall surface of the oil guide plate 5 after passing through the oil holes H and flow downwards under the guidance of the wall surface, so that the influence of air flow blowing on the drop of the oil drops can be avoided.

As shown in fig. 1, after passing through the second refraction assembly 2, the gas-phase refrigerant flows upward through the channel between the third refraction plate 23 and the partition plate 6, and sequentially passes through the lower air-equalizing plate 71 and the upper air-equalizing plate 72, air-equalizing holes are formed in both layers of air-equalizing plates, when the air flows, small oil drops can be converged into large oil drops on the air-equalizing plates and drop under the action of gravity, meanwhile, the two layers of air-equalizing plates can uniformly distribute flow fields in the horizontal section direction, so that the flow velocity when the air flows upward through the filter screen 8 is reduced, and the efficiency of separating the oil drops by the filter screen is improved. The final vapor phase refrigerant flows to the condenser through an outlet port 32 at the top of the shell.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same; although the present application has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will appreciate that: modifications may be made to the specific embodiments herein or equivalents may be substituted for part of the technical features; without departing from the spirit of the technical solutions of the present application, it should be covered in the scope of the technical solutions claimed in the present application.

Claims (13)

1. An oil-gas separation device, comprising:

a housing (3) having an inlet (31) for inflow gas and an outlet (32) for outflow gas;

a partition plate (6) which is arranged in the inner cavity of the shell (3) and divides the inner cavity of the shell (3) into a first cavity (1 a) and a second cavity (1 b) from a first direction (X), wherein the first cavity (1 a) is communicated with the air inlet (31), the second cavity (1 b) is communicated with the air outlet (32), and air enters the first cavity (1 a) from the air inlet (31) and flows along a second direction (Y) perpendicular to the first direction (X), and bypasses the partition plate (6) to enter the second cavity (1 b);

a first baffle assembly (1) arranged in the first cavity (1 a) for baffle of the gas entering the first cavity (1 a); and

the second flow-bending component (2) is arranged in the second cavity (1 b) to bend gas entering the second cavity (1 b), the second flow-bending component (2) comprises at least two layers of bending plates (21, 22 and 23) which are arranged at intervals in the second direction (Y), each bending plate comprises at least two plate bodies, and adjacent plate bodies in the at least two plate bodies are connected at an angle to form a flow-bending oil-filtering channel.

2. The oil and gas separation device of claim 1, wherein the at least two plates include a first plate and a second plate that are perpendicular to each other.

3. The oil-gas separation device according to claim 1, wherein the bent portion of the bending plate is provided with an oil passing hole.

4. A gas and oil separator according to claim 3, further comprising an oil guiding plate (5) connected to the bending position of the bending plate located at the lowest layer of the at least two layers of bending plates, the oil guiding plate (5) extending in the second direction (Y).

5. The oil-gas separation device according to claim 3, wherein a plurality of oil passing holes (H) are provided at the bending position of the bending plate at intervals.

6. An oil and gas separation device according to claim 1, characterized in that the first flow breaking assembly (1) comprises at least two flow breaking plates (11, 12) arranged at intervals in the second direction (Y), which flow breaking plates comprise a gap arranged near one side of the inner wall of the housing (3) through which gap gas flows in the second direction (Y).

7. The oil and gas separator of claim 6, wherein the indentations of adjacent ones of the at least two baffles are staggered.

8. The oil and gas separation device according to claim 6, characterized in that a baffle plate of the at least two baffle plates, which is remote from the gas inlet (31), is connected to an end of the separator plate (6).

9. The oil and gas separation device according to claim 1, further comprising an oil baffle (4) arranged between the second refraction assembly (2) and the bottom of the housing (3).

10. The oil-gas separation device according to claim 9, characterized in that one end of the oil baffle plate (4) is connected with the inner wall of the housing (3), and a gap is provided between the other end of the oil baffle plate (4) and the inner wall of the housing (3).

11. The oil and gas separation device according to claim 1, further comprising a gas equalization plate (7) arranged between the second refraction assembly (2) and the gas outlet (32).

12. The oil and gas separation device according to claim 1, further comprising a filter screen (8) arranged between the second refraction assembly (2) and the gas outlet (32).

13. A refrigeration apparatus comprising a compressor and an oil-gas separation device as claimed in any one of claims 1 to 12, wherein an exhaust port of the compressor is connected to an intake port of the oil-gas separation device.