Liquid-cooled compression device

Abstract

A liquid-cooled compression device, comprising: at least one compressor unit (100), wherein the compressor unit (100) comprises a compressor (110) and a gas-liquid separator (120), and a gas outlet of the compressor (110) is connected to a gas inlet of the gas-liquid separator (120); and at least one cooling unit (200), wherein the cooling unit (200) comprises at least one medium cooler (210) and at least one aftercooler (220); a hot side channel of the at least one medium cooler (210) is connected to a lubricating medium outlet of the gas-liquid separator (120) and a lubricating medium inlet of the compressor (110) by means of a lubricating medium pipeline to form a lubricating medium circulation loop; a hot side channel of the at least one aftercooler (220) is connected to a gas outlet of the gas-liquid separator (120) by means of a gas delivery pipeline; and a cold side channel of the at least one medium cooler (210) and a cold side channel of the at least one aftercooler (220) are connected in series by means of a refrigerant pipeline. The pipeline structure of the device is simple, the miniaturization of the cooling unit can be achieved, and the overall size of the device is reduced.

Description

Compression device using liquid cooling

[0001] This application claims priority to Chinese Invention Patent Application No. 202410835382.3, filed on June 25, 2024, entitled "Compression Device Using Liquid Cooling" and filed on June 25, 2024, entitled "Compression Device Using Liquid Cooling" and filed on June 25, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The exemplary embodiments of this application generally relate to the field of compression apparatus, and particularly to a compression apparatus utilizing liquid cooling. Background Technology

[0003] Compressors are used to compress gases, and they typically require a cooling system to assist in their operation. Traditional cooling systems that use refrigerants such as water to cool the compressor have complex piping structures and occupy a large amount of space, which is detrimental to the compressor. In addition, current compressors often waste heat exchange energy (refrigerant) due to unreasonable cooling system layout, which is harmful to the environment. Summary of the Invention

[0004] The purpose of this application is to provide a compression device that utilizes liquid cooling to solve or at least partially solve the aforementioned problems and / or other potential problems existing in conventional compressors.

[0005] In a first aspect of this application, a compression device utilizing liquid cooling is provided. The compression device includes: at least one compressor unit, comprising a compressor and a gas-liquid separator, the compressor outlet connected to the gas-liquid separator inlet; at least one cooling unit, comprising at least one medium cooler and at least one aftercooler; the hot-side passage of the at least one medium cooler is connected to the lubricating medium outlet of the gas-liquid separator and the lubricating medium inlet of the compressor via a lubricating medium pipeline to form a lubricating medium circulation loop; the hot-side passage of the at least one aftercooler is connected to the gas-liquid separator outlet via a gas delivery pipeline; the cold-side passage of the at least one medium cooler and the cold-side passage of the at least one aftercooler are connected in series via a refrigerant pipeline.

[0006] In some embodiments, at least one medium cooler has a cold-side inlet connected to at least one aftercooler has a cold-side outlet.

[0007] In some embodiments, at least one compressor unit includes multiple compressor units, and at least one cooling unit includes multiple cooling units corresponding one-to-one with the multiple compressor units.

[0008] In some embodiments, the compressor includes a compressor host and a drive motor drivenly connected to the compressor host; the gas-liquid separator, compressor host and drive motor of each compressor unit are arranged sequentially along a first direction; multiple compressor units are arranged sequentially along a second direction perpendicular to the first direction.

[0009] In some embodiments, multiple cooling units are positioned above the compressor units of multiple compressor units.

[0010] In some embodiments, the multiple compressor units include multiple air filters corresponding to the multiple compressors, and the air filters are disposed above the corresponding drive motors.

[0011] In some embodiments, at least some of the multiple cooling units are arranged in a vertically stacked manner.

[0012] In some embodiments, a refrigerant inlet manifold and a refrigerant outlet manifold are also included, with multiple cooling units connected in parallel between the refrigerant inlet manifold and the refrigerant outlet manifold.

[0013] In some embodiments, the plurality of compressor units include a first compressor unit and a second compressor unit, and the plurality of cooling units include a first cooling unit corresponding to the first compressor unit and a second cooling unit corresponding to the second compressor unit.

[0014] In some embodiments, the first compressor unit includes a first compressor, a first gas-liquid separator, and a first air filter, with the air inlet of the first compressor connected to the first air filter and the air outlet of the first compressor connected to the first gas-liquid separator; the second compressor unit includes a second compressor, a second gas-liquid separator, and a second air filter, with the air inlet of the second compressor connected to the second air filter and the air outlet of the second compressor connected to the second gas-liquid separator.

[0015] In some embodiments, the air inlet of the first air filter and the air inlet of the second air filter face opposite directions.

[0016] In some embodiments, the first cooling unit includes a first aftercooler and at least two first medium coolers, the hot-side passages of the at least two first medium coolers being connected in series via lubricating medium pipelines; the second cooling unit includes a second aftercooler and at least two second medium coolers, the hot-side passages of the at least two second medium coolers being connected in series via lubricating medium pipelines.

[0017] In some embodiments, the first cooling unit and the second cooling unit are arranged in a vertically stacked manner. Attached Figure Description

[0018] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0019] Figure 1 shows a schematic diagram of an example of a compression device according to this application;

[0020] Figure 2 shows a schematic diagram of another example of the compression device according to this application;

[0021] Figure 3 shows a perspective view of another example of the compression device according to this application.

[0022] Explanation of reference numerals in the attached drawings: 100-Compressor unit; 110-Compressor; 111-Compressor main unit; 112-Drive motor; 120-Gas-liquid separator; 130-Air filter; 140-First compressor unit; 141-First compressor; 142-First gas-liquid separator; 143-First air filter; 150-Second compressor unit; 151-Second compressor; 152-Second gas-liquid separator; 153-Second air filter; 200 - Cooling unit; 210 - Medium cooler; 220 - Aftercooler; 231 - Refrigerant inlet main pipe; 232 - Refrigerant outlet main pipe; 233, 234 - Refrigerant inlet branch pipes; 235, 236 - Refrigerant outlet branch pipes; 240 - First cooling unit; 241 - First aftercooler; 242, 243 - First medium cooler; 250 - Second cooling unit; 251 - Second aftercooler; 252, 253 - Second medium cooler. Detailed Implementation

[0023] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0024] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.

[0025] This application provides a compression device that utilizes liquid cooling. FIG1 shows a schematic diagram of an example of the compression device according to this application. Referring to FIG1, the compression device of this application includes at least one compressor unit 100 and at least one cooling unit 200.

[0026] The at least one compressor unit 100 may include one compressor unit 100 or multiple compressor units 100. For example, two compressor units, three compressor units, or four compressor units, etc. Each compressor unit 100 may include a compressor 110 and a gas-liquid separator 120.

[0027] In some examples, the compressor 110 may be a screw compressor, such as an oil-lubricated screw compressor, a water-lubricated screw compressor, or a dry screw compressor. The compressor 110 may have an inlet, an outlet, and a lubricating medium inlet. The gas-liquid separator 120 may have an inlet, an outlet, and a lubricating medium outlet, and the inlet of the gas-liquid separator 120 may be connected to the outlet of the compressor 110. The high-temperature compressed gas output by the compressor 110 may contain lubricating medium. The gas-liquid separator 120 can separate the compressed gas and the lubricating medium; the compressed gas flows out through the outlet of the gas-liquid separator 120, and the lubricating medium flows out through the lubricating medium outlet of the gas-liquid separator 120. The lubricating medium may include lubricating oil, water, or other media capable of lubricating the compressor 110.

[0028] The at least one cooling unit 200 may include one or more cooling units 200. Each cooling unit 200 may include at least one medium cooler 210 and at least one aftercooler 220. The hot-side passage of the at least one medium cooler 210 is connected to the lubricating medium outlet of the gas-liquid separator 120 and the lubricating medium inlet of the compressor 110 via a lubricating medium pipeline to form a lubricating medium circulation loop. The hot-side passage of the at least one aftercooler 220 is connected to the gas outlet of the gas-liquid separator 120 via a gas supply pipeline. The cold-side passages of the at least one medium cooler 210 and the at least one aftercooler 220 are connected in series via a refrigerant pipeline. Refrigerant can be supplied to the at least one medium cooler 210 and the at least one aftercooler 220 via the refrigerant pipeline to cool and lower the temperature of the high-temperature compressed gas and the lubricating medium. The refrigerant here may include, but is not limited to, water, brine (such as an aqueous solution of calcium chloride or sodium chloride), propylene glycol, ethylene glycol, dichloromethane, glacial refrigerant, a mixture of water and ethylene glycol, etc.

[0029] In some examples, the at least one medium cooler 210 may include one or more medium coolers 210. When the at least one medium cooler 210 includes multiple medium coolers 210, the cold-side passages of the multiple medium coolers 210 may be connected in series via refrigerant piping, and the hot-side passages of the multiple medium coolers 210 may be connected in series or in parallel.

[0030] In some examples, the at least one aftercooler 220 may include one or more aftercoolers 220. In the case where the at least one aftercooler 220 includes multiple aftercoolers 220, the cold-side passages of the multiple aftercoolers 220 may be connected in series via refrigerant piping, and the hot-side passages of the multiple aftercoolers 220 may be connected in series or in parallel.

[0031] Regarding the positional relationship between the at least one aftercooler 220 and the at least one medium cooler 210 in the refrigerant flow direction, in one example, the at least one aftercooler 220 may be located upstream of the at least one medium cooler 210 in the refrigerant flow direction. Specifically, the cold-side inlet of the at least one aftercooler 220 may be connected to the refrigerant inlet line, and the cold-side outlet of the at least one aftercooler 220 may be connected to the cold-side inlet of the at least one medium cooler 210. The refrigerant first flows into the at least one aftercooler 220 to cool and lower the temperature of the high-temperature compressed gas, thus prioritizing the outlet temperature of the compressed gas, and then flows into the at least one medium cooler 210 to further cool and lower the lubricating medium.

[0032] In another example, the at least one aftercooler 220 may be located downstream of the at least one medium cooler 210 in the refrigerant flow direction. Specifically, the cold-side inlet of the at least one medium cooler 210 may be connected to the refrigerant inlet line, and the cold-side outlet of the at least one medium cooler 210 may be connected to the cold-side inlet of the at least one aftercooler 220. The refrigerant first flows into the at least one medium cooler 210 to cool the lubricating medium, which can preferentially ensure the stable operation of the compressor unit 100, and then flows into the at least one aftercooler 220 to further cool the high-temperature compressed gas.

[0033] The positional relationship between the aftercooler 220 and the medium cooler 210 in the refrigerant flow direction, as described above, can be selected according to the actual user requirements.

[0034] The compression apparatus of this application embodiment includes a cooling unit 200 comprising at least one medium cooler 210 and at least one aftercooler 220. The medium cooler 210 is used to cool and lower the temperature of the lubricating medium, and the aftercooler 220 is used to cool and lower the temperature of the high-temperature compressed gas output from the compressor 110. The cold-side passages of the at least one medium cooler 210 and the at least one aftercooler 220 are connected in series via refrigerant pipelines. This simplifies the pipeline structure, facilitates the miniaturization of the cooling unit 200, and thus reduces the overall size of the compression apparatus; moreover, by using a single refrigerant line connected in series to cool the high-temperature compressed gas and the lubricating medium sequentially, heat exchange efficiency is ensured while energy waste is avoided.

[0035] In some embodiments, the at least one compressor unit 100 includes a plurality of compressor units 100, and the at least one cooling unit 200 includes a plurality of cooling units 200 corresponding one-to-one with the plurality of compressor units 100. Thus, a modular compression device can be formed, the number of compressor units 100 and cooling units 200 configured can be determined according to actual needs, for example, two compressor units 100 corresponding to two cooling units 200, or three compressor units 100 corresponding to three cooling units 200, and so on.

[0036] For example, as shown in Figures 2 and 3, the plurality of compressor units 100 may include a first compressor unit 140 and a second compressor unit 150, and the plurality of cooling units 200 may include a first cooling unit 240 and a second cooling unit 250, wherein the first cooling unit 240 may correspond to the first compressor unit 140, and the second cooling unit 250 may correspond to the second cooling unit 250.

[0037] The first compressor unit 140 may include a first compressor 141 and a first gas-liquid separator 142, with the outlet of the first compressor 141 connected to the first gas-liquid separator 142. The second compressor unit 150 may include a second compressor 151 and a second gas-liquid separator 152, with the outlet of the second compressor 151 connected to the second gas-liquid separator 152.

[0038] The first cooling unit 240 includes a first aftercooler 241 and two first medium coolers 242 and 243. The hot-side inlet of the first aftercooler 241 can be connected to the outlet of the first gas-liquid separator 142, and the hot-side outlet of the first aftercooler 241 can be connected to the gas supply pipeline. The hot-side passages of the two first medium coolers 242 and 243 can be connected in series through lubricating medium pipelines. The hot-side passages of the two first medium coolers 242 and 243 are also connected to the lubricating medium outlet of the first gas-liquid separator 142 and the lubricating medium inlet of the first compressor 141, respectively, through lubricating medium pipelines to form a first lubricating medium circulation loop. The cold-side passage of the first aftercooler 241 and the cold-side passages of the two first medium coolers 242 and 243 can be connected in series through refrigerant pipelines.

[0039] The second cooling unit 250 includes a second aftercooler 251 and at least two second medium coolers 252 and 253. The hot-side inlet of the second aftercooler 251 can be connected to the outlet of the first gas-liquid separator 142, and the hot-side outlet of the second aftercooler 251 can also be connected to the gas supply pipeline. The hot-side passages of the two second medium coolers 252 and 253 can be connected in series through lubricating medium pipelines. The hot-side passages of the two second medium coolers 252 and 253 are also connected to the lubricating medium outlet of the second gas-liquid separator 152 and the lubricating inlet of the second compressor 151 through lubricating medium pipelines, respectively, to form a second lubricating medium circulation loop. The cold-side passage of the second aftercooler 251 and the cold-side passages of the two second medium coolers 252 and 253 can be connected in series through refrigerant pipelines. It should be noted that although the above example sets two compressor units 100 and two cooling units 200, in actual applications, the number of compressor units 100 and cooling units 200 can be flexibly configured according to actual needs.

[0040] In some embodiments, the compressor 110 includes a compressor main unit 111 and a drive motor 112 drivenly connected to the compressor main unit 111. The gas-liquid separator 120, compressor main unit 111, and drive motor 112 of each compressor unit 100 are arranged sequentially along a first direction. Multiple compressor units 100 are arranged sequentially along a second direction perpendicular to the first direction.

[0041] For example, as shown in FIG3, the first gas-liquid separator 142 of the first compressor unit 140, the compressor main unit 111 of the first compressor 141, and the drive motor 112 of the first compressor 141 can be arranged sequentially along a first direction (e.g., the direction shown by arrow X in FIG3). The second gas-liquid separator 152 of the second compressor unit 150, the compressor main unit 111 of the second compressor 151, and the drive motor 112 of the second compressor 151 can also be arranged sequentially along the first direction. The first compressor unit 140 and the second compressor unit 150 can be arranged sequentially along a second direction (e.g., the direction shown by arrow Y in FIG3).

[0042] In this way, the number of compressor units 100 can be flexibly selected according to actual needs and arranged sequentially along the second direction, which not only improves the modularity of the compression device, but also has a high degree of regularity.

[0043] In some embodiments, the plurality of compressor units 100 may include a plurality of air filters 130 corresponding one-to-one with the plurality of compressors 110, with the air filters 130 disposed above the corresponding drive motors 112. Thus, air entering the compressor 110 after being filtered by the air filters 130 can improve the cleanliness of the intake air of the compressor 110. Exemplarily, as shown in Figures 2 and 3, the first compressor unit 140 may further include a first air filter 143, with the air inlet of the first compressor 141 connected to the first air filter 143. The second compressor unit 150 may further include a second air filter 153, with the air inlet of the second compressor 151 connected to the second air filter 153.

[0044] In some embodiments, multiple cooling units 200 may be arranged above the compressor main unit 111 of multiple compressor units 100. In this way, the empty space on top of the compressor main unit 111 can be well utilized, which is beneficial to improving the compactness of the compressor unit 100, and thus helps to reduce the size of the compressor unit 100 and the overall size of the compression device.

[0045] In some embodiments, at least some of the multiple cooling units 200 are stacked vertically (as indicated by arrow Z in FIG3). This improves the compactness of the multiple cooling units 200. For example, as shown in FIG3, a first cooling unit 240 and a second cooling unit 250 may be disposed above the compressor main unit 111 of the first compressor 141 and the compressor main unit 111 of the second compressor 151, and the first cooling unit 240 and the second cooling unit 250 may be stacked. Specifically, the second cooling unit 250 may be stacked above the first cooling unit 240.

[0046] In some embodiments, the compression device further includes a refrigerant inlet manifold 231 and a refrigerant outlet manifold 232, and multiple cooling units 200 can be connected in parallel between the refrigerant inlet manifold 231 and the refrigerant outlet manifold 232. In some examples, the refrigerant inlet manifold 231 can be connected to multiple cooling units 200 through multiple refrigerant inlet branch pipes, and the multiple cooling units 200 can be connected to the refrigerant outlet manifold 232 through multiple refrigerant outlet branch pipes. This simplifies the piping structure and facilitates refrigerant flow control.

[0047] For example, as shown in Figures 2 and 3, the refrigerant inlet main 231 can be connected to the cold-side inlet of the first aftercooler 241 via a refrigerant inlet branch pipe 233, and the refrigerant inlet main 231 can be connected to the cold-side inlet of the second aftercooler 251 via a refrigerant inlet branch pipe 234. The cold-side outlet of the first medium cooler 243 can be connected to the refrigerant outlet main 232 via a refrigerant outlet branch pipe 235, and the cold-side outlet of the second medium cooler 253 can be connected to the refrigerant outlet main 232 via a refrigerant outlet branch pipe 236. In this way, the first cooling unit 240 and the second cooling unit 250 are connected in parallel between the refrigerant inlet main 231 and the refrigerant outlet main 232, which simplifies the overall connection pipeline while ensuring the cooling effect.

[0048] In some embodiments, to maintain the cleanliness of the intake air of compressor 110, compressor unit 100 may further include an air filter, which may be connected to the intake port of compressor 110. Air flows into compressor 110 after being filtered by the air filter. Of course, compressor unit 100 is not limited to compressed air, but can also be used to compress other gases.

[0049] For example, as shown in Figures 2 and 3, the first compressor unit 140 may further include a first air filter 143, and the air inlet of the first compressor 141 is connected to the first air filter 143. The second compressor unit 150 includes a second air filter 153, and the air inlet of the second compressor is connected to the second air filter 153.

[0050] In some examples, the air inlet of the first air filter 143 and the air inlet of the second air filter 153 face opposite directions. This avoids interference between the airflow from the first air filter 143 and the second air filter 153, which helps to maintain a stable airflow and also helps to reduce the airflow temperature.

[0051] The following uses the examples shown in Figures 2 and 3 to illustrate the operation of the compression device in this application.

[0052] The gas flows into the first compressor 141 after being filtered by the first air filter 143. The high-temperature compressed gas formed by the compression of air by the first compressor 141 flows into the first gas-liquid separator 142 (e.g., an oil-gas separator). The first gas-liquid separator 142 separates the lubricating medium and the compressed gas. The compressed gas flows into the hot-side channel of the first aftercooler 241 through the hot-side inlet for cooling. The lubricating medium flows into the hot-side channel of the first medium coolers 242 and 243 connected in series. The operation of the second compressor unit 150 is similar to that of the first compressor unit 140. The operation of the second compressor unit 150 will not be described in detail here. Please refer to the description of the first compressor unit 140 above.

[0053] Refrigerant flows in through the refrigerant inlet manifold 231, then splits into two streams. One stream flows through the refrigerant inlet branch pipe 233 into the cold-side channel of the first aftercooler 241, and the other stream flows through the refrigerant inlet branch pipe 234 into the cold-side channel of the second aftercooler 251. In the first aftercooler 241, the refrigerant exchanges heat with the compressed gas to cool it down. The cooled compressed gas then flows into the gas supply line for gas supply. Refrigerant flowing out of the cold-side channel of the first aftercooler 241 flows into the cold-side channels of the first medium coolers 242 and 243, and then flows from one cold-side channel of the first medium cooler 242 to the other cold-side channel of the first medium cooler 243. Similarly, refrigerant flowing out of the cold-side channel of the second aftercooler 251 flows into the cold-side channels of the second medium coolers 252 and 253, and then flows from one cold-side channel of the second medium cooler 252 to the other cold-side channel of the second medium cooler 253. Subsequently, the refrigerant flowing out of the first cooling unit 240 flows into the refrigerant outlet main pipe 232 via the refrigerant outlet branch pipe 235, and the refrigerant flowing out of the second cooling unit 250 flows into the refrigerant outlet main pipe 232 via the refrigerant outlet branch pipe 236. The refrigerant whose temperature rises after heat exchange in the refrigerant outlet main pipe 232 is cooled by the external system and then flows back into the compression unit through the refrigerant inlet main pipe 231 for cyclic heat exchange.

[0054] As described above, the compressed gas cooled by the first aftercooler 241 and the second aftercooler 251 is combined into one line and supplied to the customer through a centralized gas supply pipeline; the lubricating medium cooled by the first medium coolers 242 and 243 in series flows back to the first compressor 141 through the corresponding hot side channel outlet to lubricate the compressor main unit of the first compressor 141; in addition, the lubricating medium cooled by the second medium coolers 252 and 253 in series flows back to the second compressor 151 through its corresponding other hot side channel outlet to lubricate the compressor main unit of the second compressor 151.

[0055] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A compression device utilizing liquid cooling, comprising: At least one compressor unit, the compressor unit including a compressor and a gas-liquid separator, wherein the outlet of the compressor is connected to the inlet of the gas-liquid separator; At least one cooling unit, the cooling unit comprising at least one medium cooler and at least one aftercooler; The hot-side passage of the at least one medium cooler is connected to the lubricating medium outlet of the gas-liquid separator and the lubricating medium inlet of the compressor through a lubricating medium pipeline to form a lubricating medium circulation loop; the hot-side passage of the at least one aftercooler is connected to the gas outlet of the gas-liquid separator through a gas supply pipeline; the cold-side passage of the at least one medium cooler and the cold-side passage of the at least one aftercooler are connected in series through a refrigerant pipeline.

2. The compression device according to claim 1, wherein, The cold-side inlet of the at least one medium cooler is connected to the cold-side outlet of the at least one aftercooler.

3. The compression device according to claim 1 or 2, wherein, The at least one compressor unit includes multiple compressor units, and the at least one cooling unit includes multiple cooling units that correspond one-to-one with the multiple compressor units.

4. The compression device according to claim 3, wherein, The compressor includes a compressor host and a drive motor that is driven by the compressor host; the gas-liquid separator, compressor host and drive motor of each compressor group are arranged in sequence along a first direction; multiple compressor groups are arranged in sequence along a second direction perpendicular to the first direction.

5. The compression device according to claim 4, wherein, The plurality of cooling units are positioned above the compressor main units of the plurality of compressor units.

6. The compression device according to claim 4, wherein, The plurality of compressor units include a plurality of air filters corresponding one-to-one with the plurality of compressors, and the air filters are disposed above the corresponding drive motors.

7. The compression device according to claim 3, wherein, At least some of the multiple cooling units are arranged in a vertically stacked manner.

8. The compression device according to claim 3, wherein, It also includes a refrigerant inlet manifold and a refrigerant outlet manifold, with the plurality of cooling units connected in parallel between the refrigerant inlet manifold and the refrigerant outlet manifold.

9. The compression device according to claim 3, wherein, The plurality of compressor units includes a first compressor unit and a second compressor unit, and the plurality of cooling units includes a first cooling unit corresponding to the first compressor unit and a second cooling unit corresponding to the second compressor unit.

10. The compression device according to claim 9, wherein, The first compressor unit includes a first compressor, a first gas-liquid separator, and a first air filter. The air inlet of the first compressor is connected to the first air filter, and the air outlet of the first compressor is connected to the first gas-liquid separator. The second compressor unit includes a second compressor, a second gas-liquid separator, and a second air filter. The air inlet of the second compressor is connected to the second air filter, and the air outlet of the second compressor is connected to the second gas-liquid separator.

11. The compression device according to claim 10, wherein, The air inlets of the first air filter and the second air filter face opposite directions.

12. The compression device according to claim 9, wherein, The first cooling unit includes a first aftercooler and at least two first medium coolers, wherein the hot-side channels of the at least two first medium coolers are connected in series through lubricating medium pipelines; The second cooling unit includes a second aftercooler and at least two second medium coolers, the hot-side channels of the at least two second medium coolers being connected in series via lubricating medium pipelines.

13. The compression device according to claim 12, wherein, The first and second cooling units are arranged in a vertical stack.

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