Coalescing separator insert, coalescing separator, and method of manufacturing coalescing separator insert

Abstract

A coalescing separator insert (100; 100 ') for purifying a gas stream is disclosed. 102), in which the coalescing separator insert (100; 102), a gas flow flows from outside to inside through the coalescing separator insert (100; 102), the coalescing separator insert (100; 102) comprising:-a first coalescing separator part (10) comprising a first coalescing separator medium located around a first gas-permeable cylindrical support tube (12), said support tube being designed to support the first coalescing separator part (10); and-an additional coalescing separator part (20) downstream of the first coalescing separator part (10) in the direction of flow of the gas stream and concentrically positioned with the first coalescing separator part (10) and radially spaced from the first coalescing separator part (10) by a drainage space (30). A coalescing separator insert (100; 100 ') comprising the coalescing separator insert (100; the invention relates to a coalescing separator comprising a first coalescing separator medium (10) and a second coalescing separator medium (102), in which an additional coalescing separator portion (20) has at least two layers (24, 25) of coalescing separator medium each positioned concentrically with the first coalescing separator medium (10), e.g. Concentrically around an additional cylindrical support tube (22) designed to support the additional coalescing separator portion (20).

Description

Technical Field

[0001] This invention relates to a coalescing separator insert according to the preamble of claim 1 and a coalescing separator according to the preamble of claim 11. The invention also relates to a process for manufacturing a coalescing separator insert according to the preamble of claim 13. Background Technology

[0002] For example, an air-oil separator element is known from printed publication EP 1738816B1. Air to be purified flows from the outside to the inside of the air-oil separator element, where a multi-layered main separator, operating according to the coalescing principle, separates and coalesces oil droplets from the flowing air. Secondary aerosols exiting the main separator then flow through another coalescing separator body, i.e., a column separator, where enlarged coalesced droplets are separated and discharged by gravity.

[0003] To manufacture column separators, thick nonwoven fabrics, such as short-fiber nonwoven fabrics, especially carded materials, are typically used. As shown in the figure of EP 1736816B1, the column separator is implemented as a single layer. The single-layer nonwoven fabric of the column separator is formed by stitching or welding it to a hose in a conventional manner and then pulling it onto a support tube.

[0004] The object of this invention is to further develop the aforementioned types of coalescing separator inserts, coalescing separators, and processes, so that the coalescing separator inserts can be manufactured particularly easily and inexpensively while still achieving high separation efficiency. Primarily, it aims to provide space-saving automated manufacturing of column separators. Summary of the Invention

[0005] This objective is achieved by a coalescing separator insert having the features disclosed in claim 1, a coalescing separator having the features disclosed in claim 11, and a process having the features disclosed in claim 13. Advantageous embodiments and suitable further developments of the invention are characterized in the corresponding dependent claims.

[0006] Therefore, the present invention is based on an additional coalescing separator body, particularly implemented as a columnar separator, comprising at least two coalescing separator media layers, particularly those with annular cross-sections, arranged concentrically with the first coalescing separator media. For example, the coalescing separator media layers may be arranged concentrically around an additional cylindrical support tube, which is implemented to support the additional coalescing separator body. This additional support tube is optional. In principle, the structure of a multi-layered coalescing separator body can also function without additional or separate support tubes. This additional support tube is a hollow cylindrical body, which may be made of, for example, metal, plastic, or fabric.

[0007] In other words, the additional coalescing separator body includes at least one additional filter medium arranged in an operable (optionally customized, stacked, wound, folded, etc.) manner, and provides at least two coalescing separator medium layers. The coalescing separator medium layers are arranged sequentially or overlappingly relative to each other along the flow direction of the airflow.

[0008] In this invention, the entire additional coalescing separator body is therefore constructed of multiple layers. This multi-layered construction allows the additional coalescing separator body to be easily adapted to different size and separation requirements.

[0009] Therefore, one advantage of the present invention is that the number of layers in the additional coalescing separator body can be selected depending on the requirements regarding its separation degree. This makes it possible to manufacture different separator variants using the same coalescing separator material. In contrast, in the case of single-layer columnar separators known from the prior art, in order to manufacture different separator variants, specific, individually adapted coalescing separator materials with limited material thicknesses must be used respectively.

[0010] As the material used for the additional coalescing separator body, coalescing separator media materials known from the prior art for column separators can be arranged in multiple layers, for example, placed around an additional support tube. This is particularly advantageous when a high separation degree is required for the column separator.

[0011] Furthermore, the multi-layered construction of the column separator allows it to be manufactured from coalescing separator media (e.g., nonwoven fabric), which is lighter than single-layer column separator media known from the prior art and can be supplied in large quantities and inexpensively for standard applications. For example, the additional coalescing separator body can be formed from at least one coalescing separator media, such as nonwoven fabric, with a basis weight up to 300 g / m². 2 ), for example, 25 to 250 g / m 2 Preferably 50 to 200 g / m 2 .

[0012] Manufacturing the additional coalescing separator body using multiple relatively thin coalescing separator media layers instead of thick layers has a further advantage: the connecting seams occupy less space radially. This makes it possible to fill the saved space with additional coalescing separator media layers and thus increase separation efficiency.

[0013] As materials for the additional coalescing separator body, for example, short-fiber nonwoven fabrics and / or spunbond nonwoven fabrics and / or meltblown nonwoven fabrics can be used. Spunbond nonwoven fabrics are typically thin. The multilayer construction allows for the formation of thick layers. Short-fiber nonwoven fabrics provide relatively thick, inexpensive layers, even in the case of few layers. Furthermore, the material of the additional coalescing separator body can consist at least primarily of polyester fibers, polyamide fibers, or glass fibers, or mixtures thereof.

[0014] In another advantageous embodiment of the invention, the thickness of all coalescing separator media layers in the coalescing separator body (e.g., determined according to DIN EN ISO 9073-2 standard, i.e., at a contact pressure of 0.5 kPa) reaches a total of more than two millimeters (mm), particularly more than 2.5 mm, for example, 4 mm to 10 mm.

[0015] Therefore, the space-saving and cost-effective possibility of manufacturing this additional coalescing separator body according to the coalescing separator insert of the present invention lies in - At least two separate coalescing separator media layer elements, particularly coalescing separator media web elements, are concentrically arranged, which are oversized circumferentially, in such a way, for example, around an additional support tube, and particularly positioned such that their respective lateral end regions, arranged perpendicular to the end face of the coalescing separator insert, overlap each other. - Subsequently, the overlapping lateral end regions are connected to each other by means of a connecting seam extending along the longitudinal axis of the other coalescing separator body.

[0016] In this configuration, the web elements of each coalescing separator media layer are arranged concentrically with respect to the first coalescing separator media (10), for example, in a semi-circular arrangement, such that the coalescing separator media layers (24, 25) produced by them form a closed cylindrical wall surface. For example, in this way, the web elements of each coalescing separator media layer can be arranged around an additional support tube, such that the coalescing separator media layers produced by them completely surround the additional support tube in the circumferential direction.

[0017] Compared to existing manufacturing methods for column separators (where the column separator is formed as a flexible tube, fixed, and subsequently pulled onto an additional support tube), the alternative coalescing separator body produced according to the invention is a significantly less expensive type of manufacturing. In this alternative coalescing separator body, the additional coalescing separator media layer element is placed, for example, around the additional support tube, and the overlapping lateral end regions are fixed relative to each other. Furthermore, the alternative coalescing separator body manufactured according to the invention can be easily adapted to various requirements regarding separation degree.

[0018] Furthermore, the construction of the coalescing separator media layer, consisting of multiple elements, allows for further savings in the space occupied by the connecting seams. For example, several, such as two small connecting seams, require less radial space than thick seams. The space gained can be used to provide additional coalescing separator media layers arranged sequentially along the flow direction, which increases the separation degree. Due to the multi-layered feature of the coalescing separator media layers arranged sequentially along the airflow direction, and due to the construction of individual coalescing separator media layers consisting of at least two elements, a higher separation degree can be achieved in the same space in the coalescing separator insert of the present invention compared to single-layer columnar separators known from the prior art.

[0019] In a preferred embodiment of the invention, to manufacture the additional coalescing separator body, at least two coalescing separator media layer elements, for example, are placed from opposite sides, around a cylindrical hollow space, or around an additional support tube, and are connected to each other, particularly fused together, in the lateral regions where the coalescing separator media layer elements overlap. In other words, a multi-layered additional coalescing separator body is produced by joining, particularly by fusing, four or more coalescing separator media layer elements, especially coalescing separator media web elements. This makes it possible to define and select the number of layers of the additional coalescing separator body (e.g., a column separator) during its manufacture, depending on the required separation degree of the additional coalescing separator body. In this way, the material used for the additional coalescing separator body can be kept in stock, and different separator variants can be manufactured using the same coalescing separator media material. In contrast, for the manufacture of a single-layer column separator known from the prior art, a specific coalescing separator media material with a specific defined thickness must be used for each separator variant. Furthermore, cost-effective combinations of at least two different filter media layers become possible.

[0020] In order to achieve particularly cost-effective storage of the material used to form the coalescing separator body, the material of the coalescing separator media layer advantageously includes a consistent mechanical structure and is made of the same coalescing separator media.

[0021] However, the sheets or layers of the coalescing separator body can also be made of one or more different materials. Manufacturing two or more layers of the coalescing separator body with different material compositions makes it possible to combine the advantages of different materials. For example, each sheet or layer of the coalescing separator body can have a different material composition.

[0022] Joints can be advantageously manufactured using welding techniques, such as ultrasonic welding. During ultrasonic welding, the ultrasonic welding electrode melts the coalescing separator medium material, causing the material fibers to fuse together.

[0023] Advantageously, the overlapping area of ​​the coalescing separator media layer elements connected to each other extends from the other coalescing separator body into the guide space, in other words, in the direction toward or downstream of the first coalescing separator body. In this case, the overlapping area extends radially outward when the airflow is guided from the outside to the inside, or radially inward when the airflow is guided from the inside to the outside. Therefore, the connecting seam protrudes radially outward or radially inward. This has the advantage that the connecting seam serves, for example, as a spacer with the first coalescing separator body for positioning the other coalescing separator body in the coalescing separator insert. In this way, it is possible to prevent the other coalescing separator body from being jammed or hooked at the first support tube and thus damaged when inserted into the coalescing separator insert.

[0024] In this context, "outward-facing" refers to a direction perpendicular to the longitudinal axis of the coalescing separator insert and oriented radially outward from the longitudinal axis, i.e., towards the outer circumference of the coalescing separator insert. Conversely, "inward-facing" refers to a direction perpendicular to the longitudinal axis of the coalescing separator insert and oriented radially inward from the outer circumference, i.e., towards the axis or center of the coalescing separator insert.

[0025] In order to center the additional coalescing separator body within the coalescing separator insert, the corresponding elements of the coalescing separator media layer are advantageously implemented symmetrically with respect to each other, particularly mirror-symmetrically, for example, arranged approximately or substantially symmetrically around the additional support tube.

[0026] To provide a particularly stable connection, the joint is made into a continuous joint by taking advantage of the terrain.

[0027] To provide a particularly stable connection, the connection seam advantageously extends at least two-thirds of the length of the other coalescing separator body, and preferably substantially across the entire length of the other coalescing separator body.

[0028] Surprisingly, it was found that sufficient shape stability of the additional support tube could be achieved simply by connecting it (e.g., by adhesive bonding) to the end plate disposed at the end face. No further fixing is required beyond the fixation at the end plate. Because the coalescing separator media layers of the additional coalescing separator body are relatively lightweight, they transmit only a small amount of pressure to the additional support tube. Therefore, the additional support tube can be manufactured simply, inexpensively, and stably, as the plate-shaped element (e.g., a sheet of metal including air openings) bent into a cylindrical shape around its longitudinal axis is adhesively connected to the end plate at its end face. No additional axially extending connection seams are required. The multi-layered construction of the column separator, consisting of several layers of relatively lightweight coalescing separator media, makes the manufacture of the column separator support tube particularly cost-effective and efficient.

[0029] In another advantageous embodiment of the invention, the additional coalescing separator body is designed such that the air permeability through the additional coalescing separator body (e.g., as determined according to DIN EN ISO 9237) reaches greater than 300 liters per square second [l / m²] at a pressure difference of 200 Pascals (Pa). 2 [s] and less than 4500 liters per square meter per second [l / m 2 s).

[0030] In comparison, the air permeability of the first coalescing separator body, especially the main separator, is advantageously less than 400 l / m³. 2 s, for example 5-300 l / m 2 s.

[0031] Relatedly or alternatively, in an advantageous embodiment of the invention, the first coalescing separator medium may be arranged in multiple layers around the first support tube, particularly wound. The main separator may include several (e.g., 3 to 20) coalescing separator medium layers, such as glass fiber paper layers.

[0032] The additional coalescing separator body is advantageously designed such that it includes a higher airflow permeability, particularly air permeability, than the corresponding layer of the first coalescing separator body. For example, a single layer of the main separator may include a lower permeability, such as half that of the column separator, compared to the entire column separator.

[0033] The present invention provides a coalescing separator insert and a coalescing separator with a column separator that is optimized in terms of separation, routing and manufacturing.

[0034] Furthermore, the present invention relates to the use of at least one coalescing separator insert of the aforementioned type and / or coalescing separator insert manufactured according to the aforementioned type of method and / or coalescing separator constructed according to the aforementioned type for air-oil separation in a compressed air system or vacuum system supplied by an oil-lubricated connector element of a machine (e.g., a compressor or vacuum pump), wherein the compressed air system is advantageously further configured to return the separated oil to the connector element.

[0035] Finally, the present invention relates to the use of at least one coalescing separator insert of the aforementioned type and / or coalescing separator insert manufactured according to the aforementioned type of method and / or coalescing separator configured according to the aforementioned type for air-oil separation of crankcase gases in an internal combustion engine.

[0036] For example, the coalescing separator insert of the present invention can be used in the following applications: - In spin-on coalescing separators or spin-on air-oil separators - In a compressor configured to compress air, - In compressors configured for oil separation, oil is returned to the oil circuit, and - In applications using oils with viscosity grades of VG32 and higher. Attached Figure Description

[0037] As mentioned above, there are various possibilities for designing and further developing the teachings of the invention in an advantageous manner. In this regard, on the one hand, reference is made to the dependent claims of claims 1, 11, and 13; on the other hand, other configurations, features, and advantages of the invention will be discussed below, particularly by means of... Figures 1 to 5 The embodiments shown will be explained in more detail.

[0038] It shows: Figure 1 This is a longitudinal cross-sectional view of a first embodiment of a coalescing separator according to the present invention, wherein the coalescing separator insert is manufactured according to the method of the present invention; Figure 2 It is based on Figure 1 A partial cross-sectional view of a coalescing separator; Figure 3 yes Figure 1 Detailed view of the coalescing separator; Figure 4 yes Figure 1 A perspective view of the coalescing separator body of the coalescing separator insert; Figure 5 yes Figure 4Another cross-sectional view of the coalescing separator body, which illustrates the different coalescing separator media layers and the outwardly extending connecting seams; Figure 6 This is another embodiment of a coalescing separator insert manufactured according to the method of the present invention; and Figure 7 yes Figure 6 Longitudinal cross-sectional view of the coalescing separator insert.

[0039] exist Figures 1 to 7 In this context, the same or similar embodiments, elements, or features are provided with the same reference numerals. Detailed Implementation

[0040] Figure 1 A longitudinal section of a coalescing separator (i.e., a so-called spin-on air-oil separator 200) is shown. It is implemented to separate particles from a gas or gas mixture, particularly for coalescing aerosols formed from liquids in air. The liquid to be separated can be, for example, oil, fuel, hydraulic fluid, or coolant.

[0041] The coalescing separator 200 includes a cup-shaped pressure-stabilizing housing 210 in which an embodiment of the coalescing separator insert 100 configured according to the invention is received.

[0042] Cover 212 is used to close the open end face of the housing body 210. For supplying feed gas, coalescing separator 200 includes a feed gas inlet 220, which is connectable to a feed gas supply section 320 of a connector element of a machine, such as a working machine, particularly a compressor, such as a compressed air compressor, or a screw compressor. For discharging purified clean gas, coalescing separator 200 includes a clean gas outlet 240, which is connectable to a clean gas supply section 330 of a connector element.

[0043] exist Figure 1 In the spin-on air-oil separator 200 shown, a raw gas inlet 220 and a clean gas outlet 240 are arranged at a cover 212. The clean gas outlet 240 includes a central cylindrical cutout in which a particularly tubular nipple 242 can be arranged, extending axially through the cover 212. The nipple 242 is associated with a connector element.

[0044] also, Figure 1 The cover 212 shown includes at least one closing element that can move between an open position and a closed position by means of the rotational movement of the cover 212. In the open position, the sleeve 242 can be guided through the cover 212 along the central axis L of the cup-shaped housing body 210. In the closed position, the sleeve 242 is fixedly connected to the cover 212.

[0045] In order to cover its corresponding end face Figures 1 to 5 The hollow cylindrical coalescing separator insert 100 shown includes corresponding end plates 50, 52.

[0046] Figures 1 to 5 The embodiment of the coalescing separator insert 100 shown according to the invention is particularly designed for use in smaller coalescing separators, especially spin-on separators. Such a gas flow coalescing separator 200 can include, for example, a gas flow rate of up to 8 standard cubic meters per minute at an operating pressure of 7 bar.

[0047] As Figures 1 to 3 In an alternative embodiment shown, the coalescing separator can also be arranged in a compressed air tank (not shown). It differs from the spin-on air-oil separator 200 in that the feed gas inlet 220 is arranged at the compressed air tank, the clean gas outlet 240 is arranged at the cover 212, and the end plate facing the cover 212 includes a radially extending flange configured to arrange the coalescing separator insert 100 within the pressure-stabilized housing 210.

[0048] Figures 1 to 5 The coalescing separator insert 100 shown is used to purify the air flowing from the outside to the inside through it. Figure 6 and 7 The coalescing separator insert 102 shown is flowed from the inside to the outside.

[0049] The main separator 10 of the coalescing separator insert 100, which operates according to the coalescing principle, is arranged around a breathable cylindrical support tube 12, for example, wound around the support tube 12 in multiple layers.

[0050] The main separator 10 may be constructed of, for example, glass fiber paper and include a substantial proportion of microglass fibers. For example, the main separator may comprise 5 to 20, for example, 15 individual layers. Each of these individual layers may include, for example, - The weight is approximately 60 to 200 grams per square meter (g / m²). 3 ), and / or - At a pressure of 200 Pascals, 5 l / m is determined according to DIN EN ISO 9237. 2 s to 300 l / m 2 air permeability, for example, 30 l / m 2 s to 300 l / m 2 air permeability of s, and / or, - For example, a thickness of approximately 0.4 mm to 2 mm as measured under a pressure of 10 kPa according to ISO 543.

[0051] Another coalescing separator body 20 (i.e., a column separator) that operates based on the coalescing principle is arranged radially inside the first coalescing separator body 10, i.e., the main separator 10 (comparatively). Figures 1 to 5 ) or radially outward (comparison) Figure 6 and 7 The column separator 20 is arranged concentrically or coaxially with the main separator 10 and can be separated from the main separator 10 by a guide space 30. In addition to the function of discharging the separated droplets, the guide space 30 also has the function of preventing the coalescing separator media of the main separator 10 and the column separator 20 from getting stuck when assembling the coalescing separator insert.

[0052] In order for the column separator 20 to withstand the pressure of the flowing air, it is arranged around an additional support tube 22 (the so-called column separator center tube).

[0053] The column separator 20 includes at least two column separator layers 24 and 25, which are arranged sequentially along the flow direction of the airflow and are arranged concentrically around the column separator support tube 22.

[0054] Figure 1 The diagram shows column separator layers 24, 25 and main separator layer 10 arranged in series, with airflow extending from the outside to the inside. However, alternatively, in this invention, the airflow can also extend from the inside to the outside, wherein the column separator layers 24, 25 are then radially closer to the longitudinal axis L of the coalescing separator inserts 100, 102 than the main separator 10.

[0055] Therefore, the guide layers 24 and 25 are always located downstream of the main separator 10. This means that for airflow guided from the outside to the inside, the guide layers 24 and 25 are closer to the longitudinal axis L of the coalescing separator inserts 100 and 102, and when the airflow is guided from the inside to the outside, the main separator 10 is closer to the longitudinal axis L of the coalescing separator inserts 100 and 102.

[0056] Each column separator layer 24, 25 includes two material web elements 24a, 24b, 25a, 25b positioned opposite each other. These material web elements 24a, 24b, 25a, 25b are arranged in a semi-circle around the column separator support tube 22, such that the column separator layers 24, 25 formed by them completely surround the column separator support tube 22.

[0057] In short, Figures 1 to 5The illustrated column separator 20 comprises four material webs 24a, 24b, 25a, 25b extending toward a central tube 22. Two material webs are positioned around the central tube from oppositely positioned sides and are then welded and cut at approximately opposite locations by two ultrasonic welding electrodes. In this invention, the layers of the column separator are thus connected to each other, for example, by welding, at another support tube 22.

[0058] The approximately relatively positioned seam 26 serves as a spacer and is used to center the column separator 20 within the air-oil separator element 100 (compare). Figure 2 In the prior art, where columnar separator layers are held together by means of only a relatively thicker connecting seam, the columnar separator tends to be eccentrically positioned in the coalescing separator insert.

[0059] The method of placing materials around a central tube and fusing them together at approximately oppositely positioned sides using an ultrasonic welding electrode, and then cutting it in the same working step, can be well integrated for multi-layer column separators. It is inexpensive and produces smaller seams26 compared to existing single-layer technologies, thus providing more space for the coalescing separator media layer.

[0060] The column separator 20 may include features such as: - Constructed from nonwoven fabrics, such as short-fiber nonwoven fabrics, spunbond materials, or meltblown materials; - Constructed from polyester, polyamide, glass, or mixtures thereof; - The air permeability of the entire column separator (as determined, for example, according to DIN EN ISO 9237) can be much higher than the air permeability of the individual coalescing layers of the main separator 10, for example, up to twice as high; - The thickness of the entire column separator (e.g., as determined according to DIN EN ISO 9073-2) can reach at least 3 mm; - The thickness of the entire column separator 10 can be less than the thickness of the main separator 20; and - The air permeability of the entire column separator (e.g., as determined according to DIN EN ISO 9237) can reach 300 l / m at 200 Pa. 2 s to 4500 l / m 2 Between s.

[0061] The multi-layer arrangement of the column separator 20 provides the following advantages: - The separation efficiency of the column separator is significantly increased; - The discharge performance will not be negatively affected. For example, when using a single-layer column separator with high separation degree, the discharge performance will be negatively affected. - With a larger overall radial thickness in the column separator, the conduction of coalesced droplets increases; and - Compared to using individually adapted single-layer coalescing separator media materials, multi-layer arrangements of conventional coalescing separator media materials are more economical and also allow for individual adaptation of column separators in terms of their separation degree.

[0062] Figure 6 and 7 Another embodiment of the coalescing separator insert 102 shown differs from the one shown in terms of the airflow direction. Figures 1 to 5 The coalescing separator insert 100 is shown. Figure 6 and 7 In the coalescing separator insert 102 shown, in the use position, airflow passes through the coalescing separator insert 102 from the inside to the outside.

[0063] List of reference numerals 10. First coalescing separator body for separating liquid (droplets) from a gas flow, such as separating oil (droplets) from a (compressed) air flow, particularly the main separator medium or the main separator. 12 First support tube, particularly the main separator support tube, for example, a first central tube configured to support the first coalescing separator body 10. 20. Additional coalescing separator bodies, particularly column separator media bodies or column separator bodies, including additional coalescing separator media in an operational form (optionally customized, stacked, wound, folded, etc.). 22 Additional support tubes, particularly column-type separator support tubes, for example, are configured to support additional central tubes of the additional coalescing separator body 20. 24 The first coalescing separator medium layer of the additional coalescing separator body 20, particularly the first layer of the column separator 20 24a First element of the first coalescing separator dielectric layer 24, particularly the first material web element of the first coalescing separator dielectric layer 24. 24b Other elements of the first coalescing separator media layer 24, particularly other material web elements of the first coalescing separator media layer 24. 25. Additional coalescing separator media layers of the additional coalescing separator body 20, particularly additional layers of the column separator 20. 25a The first element of the additional coalescing separator media layer 25, in particular the first material web element of the additional coalescing separator media layer 25. 25b Other elements of the coalescing separator media layer 25, particularly other material web elements of the coalescing separator media layer 25. 26. Connecting seams, particularly fixed seams, such as areas where the corresponding elements 24a, 24b, 25a, 25b of the coalescing separator media layers 24, 25 are overlapped and connected by welding and / or gluing and / or stitching techniques. 30. A discharge space, arranged between the first coalescing separator body 10 and another coalescing separator body 20, for discharging the oil separated by means of the first coalescing separator body 10. 50 The end plate of the coalescing separator insert 100 of the coalescing separator 200 facing the cover 212. 52. The end plate of the coalescing separator insert 100 of the coalescing separator 200, away from the cover 212. 100 Coalescing separator insert, particularly an air-oil separator element, first embodiment; Comparative Figures 1 to 5 102 Coalescing Separator Insert, Another Embodiment; Comparison Figure 6 and Figure 7 200 coalescing separators, especially spin-on air-oil separators 210 The pressure-stabilized housing of the coalescing separator 20 212 Cover of the pressure-stabilized housing of the coalescing separator 200 220 Raw material gas inlet of coalescing separator 200 230 is an outlet for the liquid being separated, for example, for the oil being separated. Clean gas outlet of 240 coalescing separator 200 242 Clean gas outlet for connector components, especially the socket. 320 Connector Component Raw Material Gas Supply Section Clean gas exhaust section of 330 connector element 320 Connector Component Raw Material Gas Supply Section Clean gas exhaust section of 330 connector element D20 Radial thickness of the additional coalescing separator body 20 L The longitudinal axis of the other coalescing separator body 20 or the central axis of the outer shell body 210.

Claims

1. Coalescing separator insert (100; 102) for separating a liquid, in particular liquid droplets, such as oil, such as oil droplets, from a gas stream, in particular from an air stream, for example from a compressed air stream, wherein In a position of use of the coalescing separator insert (100; 102), a gas flow flows through the coalescing separator insert (100; 102) from outside to inside or from inside to outside, comprising - at least one first coalescing separator body (10) acting according to the coalescing principle, comprising at least one first coalescing separator medium configured to separate liquid from a gas flow by means of the coalescing principle, and the first coalescing separator medium being arranged around a gas-permeable, cylindrical first support tube (12) configured to support the first coalescing separator body (10), and - at least one further coalescing separator body (20) comprising at least one further coalescing separator medium configured to separate liquid from a gas flow by means of the coalescing principle, and the further coalescing separator medium being arranged downstream of the first coalescing separator body (10) in the flow direction of the gas flow, the further coalescing separator medium: - being arranged concentrically to the first coalescing separator medium (10), and - being radially spaced apart from the first coalescing separator body (10) by a drain space (30), characterized in that the further coalescing separator body (20) comprises at least two coalescing separator medium layers (24, 25) which are each arranged concentrically to the first coalescing separator medium (10), for example around a cylindrical further support tube (22) configured to support the further coalescing separator body (20).

2. The coalescing separator insert of claim 1, wherein, Each coalescing separator medium layer (24, 25) comprises at least two individual coalescing separator medium layer elements (24a, 24b, 25a, 25b) which are overdimensioned in radial direction and are formed so as to be arranged around the further support tube (22), in such a way that their respective lateral areas are arranged overlapping with respect to each other and are connected to each other by means of a connecting seam (26) extending along a longitudinal axis (L) of the further coalescing separator body (20).

3. The coalescing separator insert of claim 1 or 2, wherein, The respective elements (24a, 24b, 25a, 25b) of the coalescing separator medium layers (24, 25) are embodied substantially symmetrically, in particular mirror-symmetrically, with respect to each other, for example approximately symmetrically, in particular mirror-symmetrically, around the further support tube (22).

4. A coalescing separator insert according to claim 2 or 3, characterised in that, The connecting seam (26) extends from the further coalescing separator body (20) into the drain space (30) in a direction towards the first coalescing separator body (10), for example radially outwards when the gas flow is directed from outside to inside or radially inwards when the gas flow is directed from inside to outside.

5. The coalescing separator insert of at least one of claims 2 to 4, characterized in that The connecting seam (26) is configured continuously.

6. The coalescing separator insert of any one of claims 2 to 5, wherein, The connecting seam (26) extends across the entire length or at least two-thirds of the length of the further coalescing separator body (20).

7. The coalescing separator insert of any one of claims 2 to 6, wherein, The respective elements (24a, 24b, 25a, 25b) of the coalescer separator media layers (24, 25) are arranged concentrically to the first coalescer separator media (10) such that the coalescer separator media layers (24, 25) resulting therefrom form a closed cylindrical wall surface, for example, arranged around the further support tube (22) such that the coalescer separator media layers (24, 25) resulting therefrom completely enclose the further support tube (22).

8. The coalescing separator insert of any one of claims 1 to 7, wherein, The connecting seam (26) is manufactured by means of a welding technique, in particular by means of an ultrasonic welding technique.

9. The coalescing separator insert of at least one of claims 1 to 8, characterized in that The respective coalescer separator media layers (24, 25) comprise a uniform mechanical structure and are made of the same material.

10. Coalescer separator insert according to at least one of claims 1 to 9, characterized in that - the coalescer separator insert (100; 102) is configured as a hollow cylinder and comprises end disks (50, 52) at its respective end faces which are configured to cover the end faces, and - the further support tube (22) is a plate-shaped element which is curved in the shape of a cylinder around its longitudinal axis, the shape of which is exclusively stabilized by the respective connection of the end faces of the support tube (22) and the end disks (50, 52) associated therewith.

11. A coalescing separator (200) comprising a coalescing separator insert (100; 102) according to any one of claims 1-9 and a pressure-stable outer housing for receiving the coalescing separator insert (100; 102), wherein, The pressure-stable housing comprises - a cup-shaped housing body (210), - a lid (212) which is configured to close the open end face of the housing body (210), - a raw gas inlet (220) which is configured to supply raw gas to the coalescer separator and which can be connected to a raw gas supply (320) of a connector element of a machine, and - a cleaning gas outlet (240) which is configured to discharge cleaning gas and which can be connected to a cleaning gas discharge (330) of the connector element.

12. Coalescer separator according to claim 11, characterized in that - the raw gas inlet (220) and the cleaning gas outlet (240) are arranged at the lid (212), wherein - the cleaning gas outlet (240) comprises a central cylindrical cutout in which a particularly tubular adapter sleeve (242) of the connector element can be arranged, the adapter sleeve extending axially through the lid (212), and - the lid (212) comprises at least one closing element which can be moved by means of a rotational movement of the lid (212) between an open position in which the adapter sleeve (242) can be guided through the lid (212) along a central axis (L) of the cup-shaped housing body (210) and a closed position in which the adapter sleeve (242) is fixedly connected to the lid (212).

13. Method for manufacturing a coalescer separator insert (100; 102) for cleaning a gas stream which, in a use position of the coalescer separator insert (100; 102), flows from outside to inside or from inside to outside through the coalescer separator insert (100; 102), wherein (i) for providing a first coalescer body (10), at least one first coalescer medium is arranged around a cylindrical, air-permeable first support tube (12), which is configured to support the first coalescer body (10), the first coalescer medium being configured to separate oil from air by means of the coalescing principle, (ii) for providing a further coalescer body (20), at least one further coalescer medium is arranged concentrically with respect to the first coalescer medium (10), for example around a cylindrical, air-permeable further support tube (22), which is configured to support the further coalescer body (20), the further coalescer medium being configured to separate oil from air by means of the coalescing principle, (iii) the further coalescer body (20) is arranged concentrically with the first coalescer body (10) such that the further coalescer body (20) is radially spaced apart from the first coalescer body (10) by a drain space (30), characterized in that at least two coalescer medium layers (24, 25) are arranged concentrically with the first coalescer medium (10) respectively when providing the further coalescer body (20) as described in step (ii), for example at least two coalescer medium layers (24, 25) are arranged concentrically around the further support tube (22) respectively when arranging the further coalescer body (20) at the further support tube (22) as described in step (ii).

14. The method of claim 13, wherein, at least two individual coalescer medium layer elements (24a, 24b, 25a, 25b) are arranged concentrically with the first coalescer medium (10) for each coalescer medium layer (24, 25) when providing the further coalescer body (20) as described in step (ii), wherein the coalescer medium layer elements (24a, 24b, 25a, 25b) are manufactured oversized in radial dimension and are arranged at their respective radial lateral areas overlapping with respect to each other and are connected to each other by means of a connection technology, in particular by means of a welding technology, for example ultrasonic welding.

15. Use of at least one coalescer insert (100, 102) configured according to at least one of claims 1 to 10 and / or manufactured according to the method of claim 13 or 14 and / or a coalescer (200) embodied according to claim 11 or 12, - air-oil separation for raw air in compressed air systems supplied through oil-lubricated connector elements of machines, such as compressors or vacuum pumps, wherein, the compressed air system is advantageously further configured to return the deoiled, cleaned air and the separated oil to the connector element, or - air-oil separation of crankcase gases for internal combustion engines.

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