Oil separation device and compressor applying same

Abstract

The oil separation device is applied to a high-flow-rate volume space of the compressor, the oil separation device comprises a plurality of oil separation pieces, oil storage cavities are formed in the oil separation pieces, oil separation openings communicated with the oil storage cavities are formed in the surfaces of the oil separation pieces, and the oil separation openings are communicated with the oil storage cavities. The oil separation piece is used for colliding with a gas-liquid mixture when the compressor runs and enabling collided and condensed oil drops to flow into the oil storage cavity through the oil separation opening; and when the compressor is stopped, the oil drops flow out of the oil storage cavity through the oil separation port. According to the invention, the plurality of oil separation pieces are arranged in the high-flow-rate volume space to form the collision oil separation channel, so that the oil separation capacity in the high-flow-rate volume space is improved, the oil yield of the compressor is reduced, and the oil content of the system is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to an oil separation device and a compressor using the same. Background Art

[0002] Existing aluminum scroll compressors usually use an oil separation technology that adds an oil return pipe at the front cover position to form a specific oil return route. Figure 1 As shown, after the dynamic plate and the static plate 300 complete the compression, the high-temperature and high-pressure oil and gas enter the oil distribution system through the exhaust hole of the front cover 200. The gas-liquid mixture (oil and gas) rotates around the oil distribution pipe 100 and is initially separated by centrifugal action. The oil enters the oil return channel 500 through the filter 400 in the oil chamber of the front cover 200 under the action of gravity, and the gas is discharged through the exhaust pressure plate inside the oil distribution pipe 100.

[0003] However, this oil separation technology has obvious shortcomings: the high oil output rate of the compressor leads to poor oil return effect, and some impurities generated during the assembly process may also be discharged. This not only affects the heat exchange capacity of the evaporator and condenser, making the compressor's performance unable to be fully utilized, but may also cause problems such as wear on the compressor. Especially during operation, insufficient lubrication may cause the performance of the compressor to decline.

[0004] Therefore, how to reduce the oil output rate of the compressor and reduce the oil content in the system is a key problem that needs to be solved urgently in the existing technology. Summary of the invention

[0005] The object of the present invention is to provide an oil separation device and a compressor using the same, aiming to solve the technical problem in the prior art that the oil output rate of the compressor is high, resulting in a decrease in the performance of the compressor.

[0006] In order to solve the above technical problems, the objective of the present invention is achieved through the following technical solutions: to provide an oil separation device, which is applied to the high flow rate volume space of the compressor, and includes a plurality of oil separation parts, wherein an oil storage cavity is opened inside the oil separation part, and an oil separation port connected to the oil storage cavity is opened on the surface of the oil separation part, and the oil separation part is used to collide with the gas-liquid mixture when the compressor is running, and make the oil droplets condensed by the collision flow into the oil storage cavity through the oil separation port; and when the compressor stops, make the oil droplets flow out of the oil storage cavity through the oil separation port.

[0007] Furthermore, the oil separator is spherical.

[0008] Furthermore, a collision portion for colliding with the gas-liquid mixture is provided on the surface of the oil separator.

[0009] Furthermore, the collision portion is an annular structure.

[0010] Furthermore, the oil distribution ports are provided in plurality.

[0011] Furthermore, the high-flow volume space is arranged in the inner cavity of the oil distribution pipe of the compressor, and the oil distribution device also includes a top cover and a bottom cover, the top cover is arranged at the upper part of the inner cavity of the oil distribution pipe, and the bottom cover is arranged at the lower part of the inner cavity of the oil distribution pipe, the high-flow volume space is formed between the top cover, the bottom cover and the side wall of the oil distribution pipe, the oil distribution component is confined in the high-flow volume space, the top cover is provided with an outlet for gas outflow, and the oil distribution device also includes a first oil outlet arranged on the bottom cover and / or the oil distribution pipe.

[0012] Furthermore, the high flow rate volume space is a cavity between the stator plate and the front cover of the compressor, the oil separator is confined within the high flow rate volume space, and the oil separator also includes a second oil outlet opened and connected to the cavity.

[0013] Furthermore, the high-flow-rate volume space is an exhaust passage of a compressor, and the oil separation device further includes a third oil outlet opened at the bottom of the exhaust passage, and the third oil outlet is connected to the exhaust passage.

[0014] Furthermore, the sum of the volumes of the plurality of oil separators is less than half of the high flow rate volume space.

[0015] An embodiment of the present invention further provides a compressor, comprising the oil separation device as described above.

[0016] The present invention provides an oil separation device and a compressor using the same. The oil separation device is applied to a high-flow volume space of the compressor. The oil separation device includes a plurality of oil separation parts. An oil storage cavity is provided inside the oil separation part. An oil separation port connected to the oil storage cavity is provided on the surface of the oil separation part. The oil separation part is used to collide with a gas-liquid mixture when the compressor is running, and to make the oil droplets condensed by the collision flow into the oil storage cavity through the oil separation port; and when the compressor stops, to make the oil droplets flow out of the oil storage cavity through the oil separation port. The present invention increases the oil separation capacity in the high-flow volume space by arranging a plurality of oil separation parts in the high-flow volume space to form a collision oil separation channel. In this way, the oil output rate of the compressor is reduced and the oil content of the system is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0018] Figure 1It is a schematic diagram of the structure of a traditional compressor;

[0019] Figure 2 A schematic diagram of the structure of an oil separation device provided in an embodiment of the present invention;

[0020] Figure 3 A cross-sectional view of an oil separation device provided in an embodiment of the present invention Figure 1 ;

[0021] Figure 4 A cross-sectional view of a horizontal compressor provided by an embodiment of the present invention;

[0022] Figure 5 A cross-sectional view of an oil distribution pipe provided in an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the structure of a top cover provided by an embodiment of the present invention;

[0024] Figure 7 A schematic structural diagram of a vertical compressor provided by an embodiment of the present invention;

[0025] Figure 8 A cross-sectional view of an oil separation device provided in an embodiment of the present invention Figure 2 .

[0026] Description of the symbols in the figure:

[0027] 100, oil distribution pipe; 200, front cover; 300, static plate; 400, filter screen; 500, oil return channel;

[0028] 10. Oil separation part; 11. Oil storage cavity; 12. Oil separation port; 13. Collision part;

[0029] 20. Top cover; 21. Air outlet;

[0030] 30. Bottom cover; 31. First oil outlet;

[0031] 40. Second oil outlet;

[0032] 50. The third oil outlet. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0035] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0036] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0037] Combination Figure 2 and Figure 3 As shown, an embodiment of the present invention provides an oil separation device, which is applied to the high-flow volume space of the compressor, including a plurality of oil separation components 10, wherein an oil storage cavity 11 is opened inside the oil separation component 10, and an oil separation port 12 connected to the oil storage cavity 11 is opened on the surface of the oil separation component 10. The oil separation component 10 is used to collide with the gas-liquid mixture when the compressor is running, and make the oil droplets condensed by the collision flow into the oil storage cavity 11 through the oil separation port 12; and when the compressor stops, make the oil droplets flow out of the oil storage cavity 11 through the oil separation port 12.

[0038] In this embodiment, the oil separation device includes a plurality of oil separation parts 10, which can separate the gas and liquid of the gas-liquid mixture, and can effectively store oil droplets in the running state and effectively release oil droplets in the stopped state, thereby reducing the oil output rate of the compressor. An oil storage cavity 11 is provided inside the oil separation part 10, which is used to store the oil droplets condensed by collision separation. The oil storage cavity 11 adopts a hollow design, and the shape of the oil storage cavity 11 is optimized to accommodate a sufficient number of oil droplets and avoid backflow. An oil separation port 12 is provided on the surface of the oil separation part 10, and the oil separation port 12 is connected to the oil storage cavity 11 to guide the oil droplets to flow in and out. When the compressor is running, the oil separation part 10 collides with the high-speed moving gas-liquid mixture, and the condensed oil droplets are introduced into the oil storage cavity 11 for storage through the oil separation port 12; when the compressor stops running, the oil droplets stored in the oil separation part 10 slowly flow out of the oil storage cavity 11 through the oil separation port 12, thereby avoiding excessive oil droplets from being retained in the system. In addition, the oil separator 10 can be made of either metal or non-metal materials, which can be selected according to actual conditions.

[0039] In one embodiment, the oil separator 10 is spherical.

[0040] In this embodiment, the oil separator 10 is designed as a spherical structure (i.e., an oil separator ball). This design can effectively improve the oil separation efficiency and facilitate the rolling collision of the oil separator ball in a high-flow volume space, thereby increasing the collision area and separating more oil droplets from the gas-liquid mixture. At the same time, the surface characteristics of the spherical structure can also reduce the situation in which the oil separation effect is reduced due to airflow disturbance during the flow of the gas-liquid mixture.

[0041] In one embodiment, a collision portion 13 for colliding with the gas-liquid mixture is provided on the surface of the oil separator 10 .

[0042] In this embodiment, the collision part 13 provided on the surface of the oil separator 10 adopts protrusions, textures or other surface features, which can increase the collision area of ​​the gas-liquid mixture. When the compressor is running, the gas-liquid mixture flows at high speed under high pressure. The design of the collision part 13 changes the direction of the airflow and increases the surface roughness, so that the oil droplets in the oil-gas mixture are more likely to contact and condense with the surface of the oil separator 10. The collision part 13 can guide the oil droplets to the oil separation port 12 of the oil separator 10, so that they flow into the internal oil storage cavity 11 for storage. When the compressor stops running, these stored oil droplets can be released in an orderly manner through the oil separation port 12 and flow back to the lubrication parts of the compressor. Through this dynamic oil storage and release mechanism, it is ensured that the compressor can be fully lubricated both in the running and shutdown states. The collision part 13 can be optimally arranged according to the shape of the oil separator 10 and the actual use scenario. For example, when the oil separator 10 is spherical, the collision part 13 can be evenly distributed on the surface of the sphere.

[0043] Furthermore, the collision part 13 can be integrally formed with the oil separator 10, and can be made of a material that is resistant to high temperature and corrosion and has a large surface friction, such as metal or high-performance composite materials, to ensure its stability and durability in a high-pressure and high-speed airflow environment. At the same time, the texture or protrusion on the surface of the collision part 13 can be completed by precision machining or mold forming technology.

[0044] In one embodiment, the collision portion 13 is an annular structure.

[0045] In this embodiment, the collision portion 13 is distributed on the outer surface of the oil separator 10 using an annular structure. The annular design can increase the surface area and contact angle of the oil separator 10, thereby improving the collision probability between the gas-liquid mixture and the oil separator 10 and the condensation efficiency of the oil droplets. The parameters of the height and width of the annular protrusion are optimized according to the operating pressure of the compressor, the flow rate of the gas-liquid mixture and the installation position of the oil separator to ensure that the oil separation efficiency is maximized without affecting the gas flow. For example, when the oil separator 10 is spherical, the annular structure can be distributed equidistantly and parallelly on the surface of the sphere to form multiple layers of annular collision zones, or can be cross-arranged, for example Figure 2The cross in the oil separator 10 forms a cross collision zone to fully utilize the surface space of the oil separator 10.

[0046] In one embodiment, a plurality of oil distribution ports 12 are provided.

[0047] In this embodiment, a plurality of oil separation ports 12 are distributed on the surface of the oil separator 10, and the plurality of oil separation ports 12 are all connected to the oil storage cavity 11 and are arranged in the surface area of ​​the oil separator 10. The number of oil separation ports 12 is optimized according to the geometric shape and working environment of the oil separator to ensure that after the gas-liquid mixture collides with the oil separator, the oil droplets can flow into the oil storage cavity 11 through the plurality of oil separation ports 12, thereby improving the oil separation efficiency, and at the same time improving the oil droplet discharge efficiency when the compressor is in a stopped state. The size and shape of the oil separation port 12 are designed according to the particle size of the oil droplets, the gas-liquid flow rate, and the volume of the oil storage cavity 11. The shape of the oil separation port 12 can be circular, elliptical or other geometric shapes to adapt to different oil-gas separation environments.

[0048] Combination Figures 4 to 6 As shown, in one embodiment, the high flow volume space (for the convenience of distinction, it can be called the first high flow volume space) is arranged in the inner cavity of the oil distribution pipe of the compressor, and the oil distribution device also includes a top cover 20 and a bottom cover 30. The top cover 20 is arranged at the upper part of the inner cavity of the oil distribution pipe, and the bottom cover 30 is arranged at the lower part of the inner cavity of the oil distribution pipe. The high flow volume space is formed between the top cover 20, the bottom cover 30 and the side wall of the oil distribution pipe. The oil distribution component 10 is confined in the high flow volume space, and an outlet 21 for gas outflow is opened on the top cover 20. The oil distribution device also includes a first oil outlet 31 arranged on the bottom cover 30 and / or the oil distribution pipe.

[0049] In this embodiment, the high flow rate volume space can be set in the inner cavity of the oil distribution pipe of the compressor, and the oil distribution device includes a top cover 20, a bottom cover 30 and the side wall of the oil distribution pipe. The top cover 20 is set at the upper part of the inner cavity of the oil distribution pipe, and the bottom cover 30 is set at the lower part of the inner cavity of the oil distribution pipe. The top cover 20, the bottom cover 30 and the side wall of the oil distribution pipe together enclose the high flow rate volume space. The top cover 20 is located at the upper part of the oil distribution pipe, and is used to close the upper end of the high flow rate volume space. The top cover 20 is provided with an outlet 21 for gas outflow, and the opening size of the outlet 21 (the size of the outlet 21 is smaller than the size of the oil distribution component 10) and the position are optimized to ensure that the separated gas can be discharged smoothly, while preventing the oil distribution component 10 from leaking with the gas. The bottom cover 30 is located at the lower part of the oil distribution pipe, and is used to close the lower end of the high flow rate volume space, and together with the top cover 20, it forms a support and restriction structure for the oil distribution component 10. The bottom cover 30 may be provided with a first oil outlet 31, and the oil distribution pipe may also be provided with a first oil outlet 31 (i.e., the first oil outlet 31 is provided on the side wall of the oil distribution pipe), which is used to release the oil droplets stored in the oil storage cavity 11 to the oil return channel of the compressor. In the case where the first oil outlet 31 is provided on the side wall of the oil distribution pipe, the first oil outlet 31 may be designed as an inclined hole, and the effect of gravity may be used to make the oil droplets flow out of the distribution pipe faster. At the same time, the size of the first oil outlet 31 should be smaller than the size of the oil distribution part 10, so as to confine the oil distribution part 10 to a high flow rate volume space and prevent the oil distribution part 10 from flowing out of the first oil outlet 31.

[0050] In one embodiment, the high flow volume space (for the convenience of distinction, it can be called the second high flow volume space) is a cavity between the stator and the front cover of the compressor, and the oil separator 10 is confined within the high flow volume space. The oil separator also includes a second oil outlet 40 opened in communication with the cavity.

[0051] In this embodiment, the high-flow volume space can be set in the cavity between the stator and the front cover of the compressor, and the stator and the front cover jointly define the boundary of the cavity. A second oil outlet 40 is provided on the cavity for discharging oil droplets in the oil storage cavity 11. The position of the second oil outlet 40 can be set on the side wall at the bottom of the cavity (that is, a hole is provided on the bottom side wall of the front cover) to facilitate the oil droplets to flow to the oil return channel faster (the oil return channel can also be provided with a filter to filter the oil droplets). The existing cavity between the stator and the front cover is used as a high-flow volume space without adding additional structures. Of course, on the basis of setting the oil separator 10 in the cavity between the stator and the front cover, the oil separator 10 can also be further set in the oil separation pipe to form two oil separation spaces. After the first oil separation in the cavity between the stator and the front cover, the remaining gas-liquid mixture is transported to the oil separation pipe for the second oil separation, which can enhance the oil separation effect.

[0052] Combination Figure 7 and Figure 8As shown, in one embodiment, the high flow rate volume space (for the convenience of distinction, it can be called the third high flow rate volume space) is the exhaust channel of the compressor, and the oil separation device also includes a third oil outlet 50 opened at the bottom of the exhaust channel, and the third oil outlet 50 is connected to the exhaust channel.

[0053] In this embodiment, the high flow rate volume space can be set in the exhaust channel of the vertical compressor. During the exhaust process, the oil droplets in the oil storage cavity 11 are guided to the third oil outlet 50. The third oil outlet 50 is set at the bottom of the exhaust channel and is connected to the exhaust channel. The main function of the third oil outlet 50 is to guide the separated oil droplets back to the oil return channel of the compressor to avoid the oil droplets from being retained or leaking in the exhaust channel. An exhaust pipe is set on one side of the exhaust channel, and the third oil outlet 50 is set away from the exhaust pipe.

[0054] In this embodiment, the first high flow rate volume space and the second high flow rate volume space can be better suited for use in a horizontal compressor, wherein the first high flow rate volume space and the second high flow rate volume space can be selected to be set one by one, or the first high flow rate volume space and the second high flow rate volume space can be set at the same time, and the third high flow rate volume space can be better suited for use in a vertical compressor.

[0055] In one embodiment, the sum of the volumes of the plurality of oil separators 10 is less than half of the high flow rate volume space.

[0056] In this embodiment, in order to ensure that the oil separator 10 can fully exert the oil-gas separation function in the high-flow volume space and ensure the smooth flow of the gas-liquid mixture, in each high-flow volume space, the total volume of multiple oil separators 10 needs to be less than half of the volume of the corresponding high-flow volume space. Assuming that the volume of the high-flow volume space is V, the single volume of the oil separator 10 is M, and the total number of oil separators is N, the condition must be met: N*M<0.5*V. This restriction ensures that the oil separator 10 has enough clearance in the space for the gas-liquid mixture to flow, thereby achieving efficient oil separation while avoiding excessive resistance to the airflow.

[0057] An embodiment of the present invention further provides a compressor, comprising the oil separation device as described above.

[0058] In this embodiment, the high flow rate volume space can be set in the inner cavity of the oil distribution pipe of the compressor, the cavity between the stator and the front cover, or the exhaust channel. The oil droplets enter the oil storage cavity 11 through the oil distribution port 12 for storage, and the stored oil droplets are discharged through the corresponding oil outlet (such as the first oil outlet 31, the second oil outlet 40 or the third oil outlet 50) and flow back to the oil return channel of the compressor.

[0059] In summary, the oil separator 10 can separate gas and liquid, reduce the oil output rate of the compressor, and the oil separator 10 cooperates when the compressor is started and stopped, and most of the oil droplets are stored in the compressor, ensuring full lubrication of all parts of the compressor; the present invention adopts the method of changing the structure of the oil separation pipe, increasing the collision area of ​​the high-pressure gas and setting the oil separator 10. This not only increases the function of collision oil separation, but also can store the amount of oil in the compressor when it is started, so as to reduce the oil output rate of the compressor, reduce the oil content of the system, improve the heat exchange efficiency of the heat exchanger, and ensure that the compressor parts are fully lubricated.

[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An oil separator, used in a high-flow volume space of a compressor, characterized in that: The compressor comprises a plurality of oil separators, each of which has an oil storage cavity formed therein, and a surface of each oil separator having an oil separator port connected to the oil storage cavity, wherein the oil separator is used to collide with the gas-liquid mixture when the compressor is running, and to make the oil droplets condensed by the collision flow into the oil storage cavity through the oil separator port; And when the compressor stops, the oil droplets flow out of the oil storage cavity through the oil separation port.

2. The oil separation device according to claim 1, characterized in that: The oil separator is spherical.

3. The oil separation device according to claim 1, characterized in that: The surface of the oil separator is provided with a collision portion for colliding with the gas-liquid mixture.

4. The oil separation device according to claim 3, characterized in that: The collision part is an annular structure.

5. The oil separation device according to claim 1, characterized in that: The oil distribution ports are provided in plurality.

6. The oil separation device according to claim 1, characterized in that: The high-flow volume space is arranged in the inner cavity of the oil distribution pipe of the compressor. The oil distribution device also includes a top cover and a bottom cover. The top cover is arranged at the upper part of the inner cavity of the oil distribution pipe, and the bottom cover is arranged at the lower part of the inner cavity of the oil distribution pipe. The high-flow volume space is formed between the top cover, the bottom cover and the side wall of the oil distribution pipe. The oil distribution component is confined in the high-flow volume space. An outlet for gas outflow is opened on the top cover. The oil distribution device also includes a first oil outlet arranged on the bottom cover and / or the oil distribution pipe.

7. The oil separation device according to claim 1, characterized in that: The high flow rate volume space is a cavity between the stator and the front cover of the compressor, the oil separator is confined within the high flow rate volume space, and the oil separator also includes a second oil outlet opened and connected to the cavity.

8. The oil separation device according to claim 1, characterized in that: The high flow rate volume space is an exhaust channel of the compressor, and the oil separation device also includes a third oil outlet opened at the bottom of the exhaust channel, and the third oil outlet is connected to the exhaust channel.

9. The oil separation device according to claim 1, characterized in that: The sum of the volumes of the plurality of oil separators is less than half of the high flow rate volume space.

10. A compressor, characterized in that: It comprises an oil separation device as described in any one of claims 1 to 9.

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