Oil and gas separation device and refrigeration appliance

Abstract

The application discloses an oil-gas separation device and a refrigeration equipment. The device comprises a shell, a partition plate, a first baffle assembly and a second baffle assembly. The shell has a gas inlet for inflow gas and a gas outlet for outflow gas. The partition plate is arranged in the inner cavity of the shell and separates the inner cavity of the shell into a first cavity and a second cavity in a first direction. The first cavity is communicated with the gas inlet. The second cavity is communicated with the gas outlet. The gas enters the first cavity from the gas inlet and flows in a second direction perpendicular to the first direction, and enters the second cavity by bypassing the partition plate. The first baffle assembly is arranged in the first cavity to baffle the gas entering the first cavity. The second baffle assembly is arranged in the second cavity to baffle the gas entering the second cavity. The second baffle assembly comprises at least two layers of baffle plates arranged in the second direction. The baffle plate comprises at least two plate bodies. Adjacent plate bodies among the at least two plate bodies are connected at an angle to form a baffle oil filter channel. The application improves the oil-gas separation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigeration, in particular to an oil-gas separation device and a refrigeration equipment. BACKGROUND

[0002] In a screw compressor, the rotors need to be lubricated by frozen oil to reduce the noise of the compressor, and the frozen oil can reduce the gas leakage during the meshing of the rotors to improve the performance of the compressor. Therefore, in addition to the gas-phase refrigerant, the gas discharged by the compressor also includes tiny frozen oil droplets. In a screw compressor unit, an external oil-gas separation device is often used to separate the gas-phase refrigerant and the frozen oil droplets discharged by the compressor. After the frozen oil is separated, it is returned to the compressor oil tank for continued liquid injection lubrication, and the gas-phase refrigerant enters the condenser for condensation.

[0003] The separation efficiency of the oil-gas separation device has a great influence on the performance of the unit.

[0004] It should be noted that the statements in this part of the background art only provide background art related to the present application and do not necessarily constitute the prior art. SUMMARY

[0005] The present application provides an oil-gas separation device and a refrigeration equipment to improve the separation efficiency of the oil-gas separation device.

[0006] The first aspect of the present application provides an oil-gas separation device, comprising:

[0007] a housing having a gas inlet for flowing in gas and a gas outlet for flowing out gas;

[0008] a partition plate arranged in the inner cavity of the housing and separating the inner cavity of the housing into a first cavity and a second cavity in a first direction, the first cavity being in communication with the gas inlet, the second cavity being in communication with the gas outlet, the gas entering the first cavity from the gas inlet and flowing in a second direction perpendicular to the first direction, and bypassing the partition plate to enter the second cavity;

[0009] a first baffle assembly arranged in the first cavity to baffle the gas entering the first cavity; and

[0010] a second baffle assembly arranged in the second cavity to baffle the gas entering the second cavity, the second baffle assembly comprising at least two layers of baffle plates arranged in the second direction, the baffle plate comprising at least two plate bodies, adjacent plate bodies in the at least two plate bodies being connected at an angle to form a baffle oil filtering channel.

[0011] In some embodiments, the at least two plate bodies include a first plate body and a second plate body perpendicular to each other.

[0012] In some embodiments, the baffle plate is provided with an oil passing hole at the bended part.

[0013] In some embodiments, the oil-gas separation device further comprises a guide plate connected to the bend of the bottommost bend plate among the at least two bend plates, the guide plate extending along the second direction.

[0014] In some embodiments, the bend plate is provided with a plurality of oil passing holes arranged at intervals.

[0015] In some embodiments, the first baffle assembly comprises at least two baffle plates arranged at intervals along the second direction, the baffle plates comprising a notch arranged close to one side of the inner wall of the shell, the gas flowing through the notch along the second direction.

[0016] In some embodiments, the notches of adjacent two baffle plates among the at least two baffle plates are arranged in an interlaced manner.

[0017] In some embodiments, the baffle plate far from the gas inlet among the at least two baffle plates is connected to the end of the partition plate.

[0018] In some embodiments, the oil-gas separation device further comprises an oil blocking plate arranged between the second baffle assembly and the bottom of the shell.

[0019] In some embodiments, one end of the oil blocking plate is connected to the inner wall of the shell, and a gap is arranged between the other end of the oil blocking plate and the inner wall of the shell.

[0020] In some embodiments, the oil-gas separation device further comprises a gas equalizing plate arranged between the second baffle assembly and the gas outlet.

[0021] In some embodiments, the oil-gas separation device further comprises a filter screen arranged between the second baffle assembly and the gas outlet.

[0022] The second aspect of the present application provides a refrigeration device comprising a compressor and the above oil-gas separation device, the gas outlet of the compressor being connected to the gas inlet of the oil-gas separation device.

[0023] Based on the technical scheme provided in the application, the oil-gas separation device comprises a shell, a partition plate, a first flow deflection assembly and a second flow deflection assembly. The shell has a gas inlet for flowing in gas and a gas outlet for flowing out gas. The partition plate is arranged in the inner cavity of the shell and separates the inner cavity of the shell into a first cavity and a second cavity in a first direction. The first cavity is in communication with the gas inlet. The second cavity is in communication with the gas outlet. The gas enters the first cavity from the gas inlet and flows in a second direction perpendicular to the first direction, and bypasses the partition plate to enter the second cavity. The first flow deflection assembly is arranged in the first cavity to deflect the gas entering the first cavity. The second flow deflection assembly is arranged in the second cavity to deflect the gas entering the second cavity. The second flow deflection assembly comprises at least two layers of bending plates arranged in the second direction. The bending plate comprises at least two plate bodies. Adjacent plate bodies among the at least two plate bodies are connected at an angle to form a flow deflection oil filtering channel. The oil-gas separation device of the embodiment of the application separates the inner cavity of the shell into the first cavity and the second cavity by arranging the partition plate, so that the gas flows in the first cavity first and then flows in the second cavity after entering the inner cavity of the shell. The entire flow path forms a U-shaped path, and the first flow deflection assembly is arranged in the first cavity, and the second flow deflection assembly 2 is arranged in the second cavity. Moreover, the second flow deflection assembly is arranged with the bending plate to form the flow deflection oil filtering channel, so that the gas is fully collided by the flow deflection of the first flow deflection assembly and the flow deflection of the flow deflection oil filtering channel of the second flow deflection assembly, thereby improving the oil-gas separation efficiency. The improvement of the oil-gas separation efficiency can prevent the lubricating oil from entering the condenser and other heat exchangers, thereby improving the heat transfer efficiency of the heat exchanger and the unit energy efficiency. Moreover, the improvement of the oil-gas separation efficiency effectively avoids the insufficient lubrication of the compressor components due to lack of oil, thereby improving the service life of the compressor.

[0024] Other features and advantages of the present application will become apparent from the following detailed description of illustrative embodiments thereof, which proceeds with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] 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 serve to explain the principles of the application, and do not limit the application in any way. In the drawings:

[0026] Figure 1 It is a perspective structural schematic view of the oil-gas separation device of some embodiments of the application.

[0027] Figure 2 It is a structural schematic view of the first bending plate in Figure 1

[0028] Figure 3 It is a structural schematic view of the second bending plate in Figure 1

[0029] Figure 4 Figure 1 ​​​The structural diagram of the third bending plate in the diagram.

[0030] Figure 5 for Figure 1 The flow path of the gaseous refrigerant in the second chamber of the oil-gas separator shown.

[0031] Figure 6 for Figure 1 The flow path of the gaseous refrigerant in the first chamber of the oil-gas separation device shown. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0034] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "top", "bottom", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" other elements or features would then be oriented "below" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatial relative terms used herein interpreted accordingly.

[0035] As mentioned above, the separation efficiency of the oil-gas separation device has a great influence on the performance of the unit. If the separation efficiency of the oil-gas separation device is low, the refrigeration oil will enter the refrigerant cycle and adhere to the heat exchange tube wall surface of the evaporator and the condenser, forming an oil film to hinder heat exchange, reduce the heat exchange efficiency of the heat exchanger, and reduce the energy efficiency of the unit. At the same time, the lack of oil will cause insufficient lubrication of the compressor components, leading to damage of the compressor.

[0036] In view of this problem, with reference to Figures 1 to 6 The embodiment of the present application provides an oil-gas separation device, which comprises a shell 3, a partition plate 6, a first flow deflection assembly 1 and a second flow deflection assembly 2. The shell 3 is provided with an air inlet 31 for flowing-in gas and an air outlet 32 for flowing-out gas. The partition plate 6 is arranged in the inner cavity of the shell 3 and separates the inner cavity of the shell 3 into a first cavity 1a and a second cavity 1b in a first direction X. The first cavity 1a is in communication with the air inlet 31. The second cavity 1b is in communication with the air outlet 32. The gas flows into the first cavity 1a from the air inlet 31 and flows in a second direction Y perpendicular to the first direction X, and bypasses the partition plate 6 to enter the second cavity 1b. The first flow deflection assembly 1 is arranged in the first cavity 1a to deflect the gas flowing into the first cavity 1a. The second flow deflection assembly 2 is arranged in the second cavity 1b to deflect the gas flowing into the second cavity 1b. The second flow deflection assembly 2 comprises at least two layers of bent plates arranged at intervals in the second direction Y. The bent plate comprises at least two plate bodies. Adjacent plate bodies in the at least two plate bodies are connected at an angle to form a flow deflection oil filtering channel.

[0037] The oil-gas separation device of the embodiment of the present application divides the inner cavity of the shell 3 into the first cavity 1a and the second cavity 1b by the partition plate 6, so that the gas flowing into the inner cavity of the shell 3 first flows in the first cavity 1a and then flows in the second cavity 1b, the whole flow path forms a U-shaped path, and the first flow deflection assembly 1 is arranged in the first cavity 1a and the second flow deflection assembly 2 is arranged in the second cavity 1b. Moreover, the second flow deflection assembly 2 forms the flow deflection oil filter channel by arranging the bent plate, so that the gas is fully collided by the flow deflection of the first flow deflection assembly and the flow deflection of the flow deflection oil filter channel of the second flow deflection assembly, and the oil-gas separation efficiency is improved. The improvement of the oil-gas separation efficiency can prevent the lubricating oil from entering the heat exchanger such as the condenser, and further improve the heat transfer efficiency of the heat exchanger and the unit energy efficiency. Moreover, the improvement of the oil-gas separation efficiency effectively avoids the insufficient lubrication of the compressor components due to the lack of oil, and improves the service life of the compressor.

[0038] It should be noted that, with reference to Figure 5 , the oil-gas separation device of the embodiment of the present application, when working, the gas enters the first cavity 1a through the gas inlet 31 and enters the second cavity 1b after bypassing the partition plate 6, and the flow path of the gas is approximately U-shaped. In the above description, the gas enters the first cavity 1a from the gas inlet 31 and flows in the second direction Y perpendicular to the first direction X, and enters the second cavity 1b after bypassing the partition plate 6. The flow of the gas in the first cavity 1a in the second direction Y means that the general flow direction of the gas is the second direction Y, but the flow path of the gas is not strictly the second direction Y. Figure 1 and Figure 6 Since the first flow deflection assembly 1 is arranged in the first cavity 1a, the gas flowing in the first cavity 1a will inevitably be deflected by the first flow deflection assembly 1, and the flow path will be bent, not constant.

[0039] Flow deflection is to change the flow direction of the gas and make it flow tortuously. Since the flow path of the gas is lengthened and the flow speed is reduced during the flow deflection process, the collision is increased, so that the carrying degree of the gas to the oil is reduced, and the oil-gas separation effect is achieved.

[0040] With reference to Figure 1 , the second flow deflection assembly 2 of the embodiment of the present application includes at least two layers of bent plates arranged at intervals in the second direction Y. Figure 1 Exemplarily, the second flow deflection assembly 2 includes three layers of bent plates, which are the first bent plate 21, the second bent plate 22 and the third bent plate 23. With reference to Figure 2, the first bended plate 21 comprises at least two plate bodies arranged bendedly. In one embodiment, the first bended plate 21 comprises 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. In this way, when the gas flows through the first bended plate 21 after passing through the first cavity la and bypassing the baffle 6 to enter the second cavity lb, the flow path of the gas will flow upward along the multiple bends of the first bended plate 21, thus increasing the impact between the gas and the bended plate, making it easier for the oil droplets mixed in the gas to separate. In some embodiments, the more bends of the bended plate, the higher the oil-gas separation efficiency.

[0041] To increase the degree of bending of the flow channel during gas flow to further improve the separation efficiency, in some embodiments, the at least two plate bodies comprise a first plate body and a second plate body perpendicular to each other. The first plate body and the second plate body are perpendicular to each other, so that, for example, the first plate body is arranged horizontally and the second plate body is arranged vertically. After the gas flows through the first plate body, it will directly impact on the second plate body and then flow upward, the flow angle of the gas changes greatly, thereby improving the separation efficiency.

[0042] In other embodiments, each two adjacent plate bodies of the at least two plate bodies are perpendicular to each other. In this way, the efficiency of oil-gas separation is higher.

[0043] Reference Figure 5 In one embodiment, the first bended plate 21, the second bended plate 22 and the third bended plate 23 are arranged in the second direction Y in sequence. In this way, the first bended plate 21 and the second bended plate 22 form a first bended flow oil separation channel F1, and the second bended plate 22 and the third bended plate 23 form a second bended flow oil separation channel F2. Of course, in other embodiments, more than three bended plates can be arranged according to the size and volume of the shell to improve the efficiency and effect of oil separation.

[0044] Reference Figures 2 to 4 In some embodiments, the bended plate is provided with an oil passing hole H at the bended part. When the gas flows in the bended flow oil separation channel, the oil droplets will collide with the wall of the bended plate, which will reduce the flow speed of the oil droplets and at the same time the oil droplets will adhere to the wall and gather into large oil droplets to realize oil-gas collision separation. Under the action of gravity and the blowing action of the gas flow, the oil droplets flow downward along the wall and gather at the bended part of the baffle, and finally the oil droplets drop downward through the oil passing hole H into the bottom of the shell 3. For refrigeration equipment, when the oil droplets reach the bottom of the shell 3, they will return to the oil tank of the compressor through the oil return pipe 9.

[0045] In some embodiments, the oil-gas separation device further comprises a guide plate 5 connected to the bended part of the bended plate located at the bottom layer of the at least two bended plates. The guide plate 5 extends along the second direction Y. As shown in Figure 1As shown, the bottom of the first bended plate 21 is provided with an oil guide plate 5. After passing through the oil passing hole H, the oil droplets adhere to the wall surface of the oil guide plate 5 and flow downward under the guidance of the wall surface, so that the influence of airflow blowing on the falling of the oil droplets can be avoided.

[0046] Reference Figures 2 to 4 In some embodiments, the bended part of the bended plate is provided with a plurality of oil passing holes H arranged at intervals. The arrangement of the plurality of oil passing holes H increases the passing space of the oil droplets, and further improves the oil separation effect.

[0047] In some embodiments, the first baffle assembly 1 includes at least two baffle plates arranged at intervals in the second direction Y. The baffle plate includes a notch arranged close to the inner wall of the shell 1. The gas flows along the second direction Y through the notch. As shown in Figure 1 As shown, the first baffle assembly 1 includes a first baffle plate 11 and a second baffle plate 12 arranged at intervals in the second direction Y. The first baffle plate 11 and the second baffle plate 12 can be flat plates. As shown in Figure 6 As shown, after the gas enters the first cavity 1a through the gas inlet 31, the gas flows downward through multiple baffle flows. The multiple baffle flows are used to achieve oil-gas separation.

[0048] As shown in Figure 6 As shown in some embodiments, the notches of the adjacent two baffle plates of the at least two baffle plates are arranged in a staggered manner. In this way, the length of the flow path of the airflow is increased, so that the oil droplets collide with the wall surface, the flow rate of the oil droplets is reduced, and the oil droplets are attached to the wall surface to achieve separation.

[0049] In some embodiments, the baffle plate far from the gas inlet 31 of the at least two baffle plates is connected to the end of the partition plate 6. That is, the baffle plate located at the bottom is directly connected to the partition plate 6, so that after the gas passes through the baffle plate located at the bottom, the gas flows downward through the gap between the baffle plate located at the bottom and the inner wall of the shell 3, further increasing the travel of the flow and improving the separation effect.

[0050] In some embodiments, the oil-gas separation device further includes an oil blocking plate 4 arranged between the second baffle assembly 2 and the bottom of the shell 1. In this way, the oil liquid is collected on the oil blocking plate 4 and then flows into the bottom of the shell 1. The arrangement of the oil blocking plate 4 separates the airflow from the oil accumulation space at the bottom of the shell 1, preventing the airflow from impacting the frozen oil accumulated at the bottom of the shell 1, causing liquid level fluctuation and producing foam. Moreover, it can also prevent liquid level fluctuation from affecting the stable operation state of the liquid level meter or the oil level mirror.

[0051] As shown in Figure 1 As shown, one end of the oil blocking plate 4 is connected to the inner wall of the shell 1, and a gap is arranged between the other end of the oil blocking plate 4 and the inner wall of the shell 1. The oil droplets pass through the gap under the action of gravity to reach the oil accumulation space at the bottom of the shell, and the frozen oil is returned to the compressor oil tank through the oil return pipe 9.

[0052] In some embodiments, the oil-gas separation device further comprises a gas equalization plate 7 arranged between the second baffle assembly 2 and the gas outlet 32. The gas equalization plate 7 is provided with gas equalization holes. When the gas-phase refrigerant passes through the gas equalization plate 7, small oil droplets will gather into large oil droplets on the gas equalization plate and drop under the action of gravity.

[0053] As shown in Figure 1 some embodiments, the gas equalization plate 7 comprises a first gas equalization plate 71 and a second gas equalization plate 72 arranged at intervals. The gas equalization plate 7 is provided with gas equalization holes.

[0054] In some embodiments, the oil-gas separation device further comprises a filter screen 8 arranged between the second baffle assembly 2 and the gas outlet 32. The oil-gas separation is performed on the oil-gas mixture during the gas flow through the filter screen 8, reducing the amount of oil carried by the refrigerant and mitigating the adverse effects of oil deposition on the performance, safety and reliability of the entire machine.

[0055] The embodiments of the present application also provide a refrigeration equipment comprising a compressor and the above oil-gas separation device, wherein the gas outlet of the compressor is connected with the gas inlet of the oil-gas separation device.

[0056] The structure and working process of the oil-gas separation device of one specific embodiment of the present application will be described in detail below. Figures 1 to 6

[0057] As shown in Figure 1 the oil-gas separation device of the present embodiment comprises a shell 3, a first baffle assembly 1, a second baffle assembly 2, a partition plate 6, an oil blocking plate 4, an oil guiding plate 5, a gas equalization plate 7, a filter screen 8 and an oil return pipe 9.

[0058] The shell 3 comprises a shell body, a gas inlet 31, a gas outlet 32, a top cover 33, a bottom shell 34 and a bracket 35. The shell body is a cylindrical shell. The shell body is provided with an inlet passage and an outlet passage. The inlet passage is connected to the shell body and located above the shell body. The inner cavity of the inlet passage forms the gas inlet 31. The outlet passage is connected to the top cover 33, and the outlet passage forms the gas outlet 32. In this way, the gas inlet of the shell 3 is arranged on the side wall, and the gas outlet is arranged on the top wall of the shell 3.

[0059] The partition plate 6 is connected to the inner wall of the top cover 33 and extends downward. The partition plate 6 is an arc-shaped plate and separates the inner cavity of the shell 3 into a first cavity 1a and a second cavity 1b. The first cavity 1a and the second cavity 1b are respectively located on the two sides of the partition plate 6.

[0060] ​The first baffle assembly 1 is arranged in the first cavity 1a. The first baffle assembly 1 comprises a first baffle plate 11 and a second baffle plate 12. The first baffle plate 11 is connected with the partition plate 6 and the shell 3, and a first gap is arranged between the first baffle plate 11 and the inner wall of the shell 3. Similarly, the second baffle plate 12 is connected with the partition plate 6 and the shell 3, and a second gap is arranged between the second baffle plate 12 and the inner wall of the shell 3. In order to form a baffle channel, the first gap and the second gap are staggered. As shown in Figure 6 When the gas flow passes through the first cavity 1a, the gas flow passes through the baffle channel formed by the first baffle plate 11 and the second baffle plate 12 to realize oil-gas separation.

[0061] The second baffle assembly 2 is arranged in the second cavity 1b. The second baffle assembly 2 comprises a first baffle plate 21, a second baffle plate 22 and a third baffle plate 23. As shown in Figure 5 The first baffle plate 21 and the second baffle plate 22 form a first baffle oil filter channel F1, and the second baffle plate 22 and the third baffle plate 23 form a second baffle oil filter channel F2.

[0062] As shown in Figure 1 The first baffle plate 21 and the second baffle plate 22 form a first baffle oil filter channel F1, and the second baffle plate 22 and the third baffle plate 23 form a second baffle oil filter channel F2.

[0063] As shown in Figure 5 The gas-phase refrigerant carrying the frozen oil droplets passes through the second baffle assembly 2, and the oil droplets collide with the wall surface, which will reduce the flow rate of small oil droplets and the small oil droplets will adhere to the wall surface to gather into large oil droplets to realize oil-gas collision separation. Under the action of gravity and airflow blowing, the oil droplets flow downward along the wall surface and gather at the bending part of the baffle plate, and finally the large oil droplets pass through the oil hole H to reach the oil blocking plate 4. As shown in Figure 1 The oil blocking plate 4 is processed with a gap on one side, and the oil droplets reach the oil accumulation space at the bottom of the shell under the action of gravity, and the frozen oil returns to the compressor oil tank through the oil return pipe 9. A vertical oil guide plate 5 is arranged at the bottom of the first baffle plate 21, and the oil droplets adhere to the wall surface of the oil guide plate 5 after passing through the oil hole H and flow downward under the guidance of the wall surface, which can avoid the influence of airflow blowing on the oil droplets.

[0064] As shown in Figure 1As shown, after passing through the second baffle assembly 2, the gas-phase refrigerant flows upward through the passage between the third baffle plate 23 and the partition plate 6, and then passes through the lower equalization plate 71 and the upper equalization plate 72. The equalization holes are formed on the two equalization plates, and the small oil droplets are gathered into large oil droplets on the equalization plates and then drop under the action of gravity. At the same time, the two equalization plates can distribute the flow field in the horizontal cross-sectional direction, reduce the flow rate of the gas flow when flowing upward through the filter screen 8, and improve the efficiency of the filter screen in separating the oil droplets. Finally, the gas-phase refrigerant flows to the condenser through the gas outlet 32 at the top of the shell.

[0065] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can still be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range claimed by the present application.

Claims

1. An oil and gas separation device, characterized by, The oil-gas separation device comprises: a housing (3) having a gas inlet (31) for inflow of gas and a gas outlet (32) for outflow of gas; a partition plate (6) arranged in an inner cavity of the housing (3) and separating the inner cavity of the housing (3) into a first cavity (1a) and a second cavity (1b) in a first direction (X), the first cavity (1a) being in communication with the gas inlet (31), the second cavity (1b) being in communication with the gas outlet (32), gas entering the first cavity (1a) from the gas inlet (31) and flowing in a second direction (Y) perpendicular to the first direction (X) and bypassing the partition plate (6) into the second cavity (1b); a first baffle assembly (1) arranged in the first cavity (1a) to baffle the gas entering the first cavity (1a); and a second baffle assembly (2) arranged in the second cavity (1b) to baffle the gas entering the second cavity (1b), the second baffle assembly (2) comprising at least two layers of baffle plates (21, 22, 23) arranged in the second direction (Y), the at least two layers of baffle plates comprising a first baffle plate (21), a second baffle plate (22) and a third baffle plate (23) arranged in the second direction (Y) in sequence, each baffle plate comprising at least two plate bodies, adjacent plate bodies among the at least two plate bodies being connected at an angle to form a baffle oil filtering channel, the baffle plate being provided with oil passing holes at bended portions of the baffle plate, the oil-gas separation device further comprising a guide plate (5) connected to the bended portions of the first baffle plate (21), the guide plate (5) extending in the second direction (Y) so that oil droplets adhere to a wall surface of the guide plate (5) after passing through the oil passing holes and flow downward under the guidance of the wall surface, one side of the second baffle plate (22) being connected to the partition plate (6) so that a first baffle oil filtering channel (F1) is formed between the first baffle plate (21) and the second baffle plate (22) and a second baffle oil filtering channel (F2) is formed between the second baffle plate (22) and the third baffle plate (23), gas entering the first baffle oil filtering channel (F1) after passing through the first cavity (1a) and bypassing the partition plate (6) and then entering the second baffle oil filtering channel (F2) and flowing upward through a channel between the third baffle plate (23) and the partition plate (6). The at least two plate bodies comprise a first plate body and a second plate body perpendicular to each other.

2. The oil and gas separation device of claim 1, wherein, The bended portions of the baffle plate are provided with a plurality of oil passing holes (H) arranged at intervals.

3. The oil and gas separation device of claim 1, wherein, The first baffle assembly (1) comprises at least two baffle plates (11, 12) arranged in the second direction (Y), each baffle plate comprising a notch arranged on a side close to an inner wall of the housing (1), gas flowing in the second direction (Y) through the notch.

4. The oil and gas separation device of claim 1, wherein, The notches of adjacent baffle plates among the at least two baffle plates are arranged in a staggered manner.

5. The oil and gas separation device of claim 4, wherein, A baffle plate of the at least two baffle plates away from the gas inlet (31) is connected to an end of the partition plate (6).

6. The oil and gas separation device of claim 4, wherein, ​ 7. The oil and gas separation device of claim 1, wherein, The oil-gas separation device further comprises an oil baffle (4) arranged between the second baffle assembly (2) and the bottom of the shell (1).

8. The oil and gas separation device of claim 7, wherein, One end of the oil baffle (4) is connected with the inner wall of the shell (1), and a gap is arranged between the other end of the oil baffle (4) and the inner wall of the shell (1).

9. The oil and gas separation device of claim 1, wherein, The oil-gas separation device further comprises a gas equalizing plate (7) arranged between the second baffle assembly (2) and the gas outlet (32).

10. The oil and gas separation device of claim 1, wherein, The oil-gas separation device further comprises a filter screen (8) arranged between the second baffle assembly (2) and the gas outlet (32).

11. A refrigeration appliance characterized in that, The oil-gas separation device according to any one of claims 1 to 10 is connected with an exhaust port of a compressor.

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