Gas adsorption rotor for air treatment and method for manufacturing a gas adsorption rotor

Abstract

This disclosure relates to a gas adsorption rotor (10) for air processing. The gas adsorption rotor (10) comprises a rotor medium (20) having corrugated panels (21) that form channels (22) extending axially through the gas adsorption rotor (10) parallel to the rotation axis (A) of the gas adsorption rotor (10), the gas adsorption rotor (10) comprises a first side (12), a second side (14) opposite to the first side (12), and a circumferential side (16), the channel (22) extending from the first side (12) to the second side (14), and the gas adsorption rotor (10) comprises at least one rotor portion (30) of the rotor medium having a surface (32) that is at least partly laser-marked, the surface (32) that is at least partly laser-marked is on at least one of the first side (12) and the second side (14) of the gas adsorption rotor (10).

Description

Technical Field

[0001] The present invention relates to a gas adsorption rotor for air treatment and a method for manufacturing the gas adsorption rotor.

Background Art

[0002] Various types of air treatment systems are commonly used to provide treated process air to a defined space. Such air treatment systems typically include some gas adsorption device equipped with a gas adsorption element. An example of such an air treatment system is a gas adsorption rotor, generally a desiccant rotor. Such a rotor includes an adsorption medium, also called a rotor medium, which consists of a corrugated panel forming channels extending axially through the rotor medium. The rotor rotates slowly between the process air flow and the regeneration air flow, and typically, the gas adsorption rotor includes a process section and a regeneration section. The process air flows through the channels of the rotor medium, and the rotor medium adsorbs or absorbs moisture. When the gas adsorption rotor rotates, the rotor medium is heated by hot regeneration air and releases moisture to the regeneration air. After regeneration, the gas adsorption rotor returns to rotate in the process air flow, and this process is repeated.

[0003] The gas adsorption rotor is usually rotatably disposed within a rotor cassette. A seal is used between the rotor cassette and the gas adsorption rotor to avoid mixing of the air flow and unwanted air leakage. In order to firmly ensure the seal between the rotor medium and the seal and / or the rotor cassette, it is essential that the surfaces of the rotor medium corresponding to the air inlet side and the air outlet side of the gas adsorption rotor are as uniform as possible. A surface with a small amount of unevenness results in less friction with the seal during rotation of the gas adsorption rotor, saving energy and materials. Today, gas adsorption rotors are typically polished to flatten the surface, but this may not always be sufficient. Therefore, there is a need to improve the surface of the gas adsorption rotor.

Summary of the Invention

[0004] The present invention aims to mitigate, alleviate, or eliminate one or more drawbacks and disadvantages of the prior art, and to solve at least the above-mentioned problems.

[0005] Another objective of the present invention is to realize a gas adsorption rotor and a method for manufacturing a gas adsorption rotor that reduce surface irregularities of the rotor, thereby reducing friction with the seal and improving energy efficiency.

[0006] According to a first aspect of the present disclosure, a gas adsorption rotor for air processing is provided, the gas adsorption rotor comprising a rotor medium having corrugated panels that form channels extending axially through the gas adsorption rotor parallel to the axis of rotation of the gas adsorption rotor, the gas adsorption rotor comprising a first side, a second side opposite to the first side, and a circumferential side, the channels extending from the first side to the second side, and the gas adsorption rotor comprising a rotor portion of a rotor medium having a surface that is at least partially laser-marked, the surface that is at least partially laser-marked is on at least one of the first and second sides of the gas adsorption rotor.

[0007] The rotor medium is sometimes called an adsorption medium or honeycomb medium, and the channels formed by the corrugated panels are sometimes called grooves. The rotor medium may have a corrugated glass fiber structure containing a hygroscopic desiccant such as silica gel, lithium chloride, or hydrophobic zeolite adsorbent. The gas adsorption rotor can preferably be a desiccant rotor such as an adsorption rotor or absorption rotor. In this specification, the rotor medium is described as having channels extending axially parallel to the axis of rotation, but it should be understood that the gas adsorption rotor may have a rotor medium having channels extending radially and / or axially and / or in any direction within the gas adsorption rotor.

[0008] A surface that is at least partially laser-marked may also be a surface that is at least partially laser-engraved, meaning that at least part of the surface has been laser-treated to remove a fine layer of material. Laser marking at least part of at least one surface of the rotor medium involves lightly burning the top surface of the rotor medium with a thin, programmable laser beam. While this specification describes surfaces that are at least partially laser-marked, it should be understood that a gas adsorption rotor may additionally or alternatively include a rotor portion of the rotor medium having a surface that is at least partially heat-stamped. Thus, a gas adsorption rotor may comprise a rotor portion of the rotor medium having a surface that is at least partially heat-treated. The universal techniques of laser marking or laser engraving are generally considered known and are not described in detail herein. By laser marking at least part of at least one surface on the first and / or second side of the gas adsorption rotor, surface imperfections can be removed, resulting in a smoother surface. Smooth means that the surface is free from recognizable protrusions, lumps, or indentations. A smoother surface improves sealing performance and reduces friction with the gas adsorption rotor seal. This reduces the energy required to drive the gas adsorption rotor. Preferably, the rotor portion has a surface that is laser-marked on at least a portion of both the first and second sides of the gas adsorption rotor. Since the rotor medium is a highly porous composite material with a brittle surface, smoothing the surface using a laser is particularly advantageous. Because laser marking is done with light and not with a machining tool, the risk of damage or breakage to the rotor medium during surface treatment is reduced.

[0009] A gas adsorption rotor may comprise two or more rotor sections assembled to form a complete annular rotor. Alternatively, the gas adsorption rotor may consist of a single annular rotor section. The first and second sides of the gas adsorption rotor correspond to the first and second sides of the rotor section of the rotor medium. The first and second sides of the gas adsorption rotor may also be referred to as the air inlet side and the air outlet side. Thus, the channel openings are located on the first and second sides of the gas adsorption rotor. The axial extension of the gas adsorption rotor is between the first and second sides. The surfaces of the first and / or second sides of the gas adsorption rotor are essentially flat. The circumferential side of the gas adsorption rotor extends around the circumference of the gas adsorption rotor. The surface of the circumferential side is curved. The rotor section may comprise multiple peripheral sides, and it is understood that one peripheral side forms part of the circumferential side of the assembled gas adsorption rotor. The other peripheral sides of the rotor section face the peripheral sides of another rotor section, respectively, during assembly. The gas adsorption rotor may include a partition plate positioned between the peripheral edges of different rotor sections. This may cause the peripheral edges of the rotor sections to come into contact with the partition plate.

[0010] The gas adsorption rotor may have multiple surfaces on its first and / or second side that are at least partially laser-marked. Multiple or all rotor portions of the gas adsorption rotor may have surfaces on its first and / or second side that are at least partially laser-marked. It is understood that the entire surface of the first and / or second side of the rotor portion may be laser-marked. Similarly, the entire surface of the first and / or second side of the gas adsorption rotor may be laser-marked.

[0011] For example, the circumferential side of the gas adsorption rotor has a surface that is laser-marked on at least a portion of it.

[0012] For example, at least a portion of the rotor surface is laser-marked and includes marks configured to identify the rotor medium configuration of the rotor. The marks may be patterns, codes, or other graphic marks suitable for recognizing, identifying, or tracking the rotor.

[0013] The mark may be configured to allow optical identification of the rotor medium configuration of the rotor section.

[0014] The gas adsorption rotor may further comprise a transparent coating applied to the laser-marked surface of at least a portion of the first and / or second sides of the gas adsorption rotor.

[0015] Today, the manufacturing process for gas adsorption rotors typically involves spraying a coating onto individual rotor parts before assembling them into a gas adsorption rotor. This coating is applied to harden the surface of the rotor parts but also contains color pigments for identification. Therefore, the coating is usually a colored coating where a specific color corresponds to a specific rotor media configuration. Gas adsorption rotors are constructed in various ways depending on the application. As with the material treatment of the rotor media, the dimensions of the corrugations (grooves or channels) of the rotor media differ for each. Therefore, the rotor media configuration of a rotor part may be related to the channel dimensions and / or the material treatment of the rotor media. The specific rotor media configuration of a rotor part needs to be identified during the manufacturing process, when assembling the rotor parts, and at the user's site, in order to know where to install which rotor or rotor part. Furthermore, if a rotor part can be identified by its rotor media configuration, it can be replaced with a similar rotor part, making service and maintenance easier.

[0016] Today, color coatings applied to the rotor surface harden due to mechanical requirements. This is important because the rotor medium contacts the seal and / or rotor cassette. The rotation of the gas adsorption rotor causes wear on the rotor medium, necessitating hardening of the outer surface. The pigments in the coating not only provide identification to the gas adsorption rotor but also improve its visual appearance by covering blemishes and imperfections in the raw materials. Currently, coatings are sprayed onto the rotor, resulting in variations in coating depth and reach, making them unpredictable. Furthermore, colored coatings can clog some channels, affecting the functionality of the gas adsorption rotor. Additionally, pigments have negative environmental impacts. Laser marking the surface of the gas adsorption rotor not only smooths the surface but also provides identification marks, eliminating the need for color pigments in the coating. Therefore, laser marking the gas adsorption rotor allows for the removal of color pigments from the coating. Removing color pigments from the coating film provides a sustainable solution, reducing costs and improving manufacturing lead times. However, the use of a clear coating alone does not solve the problem of covering spots and defects and is not useful for identifying the material treatment configuration or waveform of the rotor medium. Therefore, laser marking may be applied to at least a portion of at least one surface to provide a mark, code or similar for identifying the rotor. This allows a particular mark to correspond to a particular rotor medium configuration. The mark may be configured to cover spots and defects in the rotor medium. The mark may also indicate how and / or where the rotor is mounted or assembled.

[0017] In one example, the mark is configured to optically identify the rotor media configuration of the rotor section. Therefore, the mark may include a QR code, barcode, or similar. In this way, the mark can indirectly contain information about a particular rotor section's manufacturing batch or other information about the rotor section. This can be advantageous, for example, for traceability.

[0018] Another aspect of the present disclosure provides a method for manufacturing a gas adsorption rotor for air treatment, comprising forming a block of rotor medium, the rotor medium comprising corrugated panels forming channels extending through the block from a first side of the block to a second side on the opposite side, the first and second sides of the block corresponding to the first and second sides of a final gas adsorption rotor, and machining the block into at least one rotor portion for a gas adsorption rotor, further comprising laser marking at least a portion of at least one surface of the rotor medium such that at least one rotor portion has a laser-marked surface on the side corresponding to the first and / or second sides of the gas adsorption rotor. The features and advantages of the gas adsorption rotor disclosed herein also apply to such a method for manufacturing a gas adsorption rotor.

[0019] In this specification, a method for manufacturing a gas adsorption rotor is described as including the step of laser marking at least a portion of at least one surface of a rotor medium, but it is understood that it may also include, additionally or alternatively, the step of heat stamping at least a portion of at least one surface of a rotor medium.

[0020] The first and second sides of the rotor medium block correspond to the first and second sides of the rotor portion, and the first and second sides of the gas adsorption rotor. Therefore, the method includes laser marking at least a portion of at least one surface of the first and / or second side of the rotor medium.

[0021] The step of forming a block of rotor media may include performing a first material treatment on the raw materials to be used in the gas adsorption rotor. Examples of raw materials include rolls of glass fiber. The first material treatment may include immersion of the raw materials in a chemical solution, and the chemical treatment is determined according to the intended use of the gas adsorption rotor. After the first material treatment, the treated raw materials may be heated to fix and dry the material. The material may then be made corrugated to form a panel consisting of one corrugated sheet and one flat sheet. The panels are then stacked on top of the block of rotor media to create the desired volume.

[0022] The step of machining the rotor media block onto the rotor portion may be performed by CNC machining.

[0023] The method may further include a second material treatment of the rotor medium block. The second material treatment may include chemical immersion of the block. After such material treatment, the block is typically dried for hardening, which may also cause a change in the color of the rotor medium.

[0024] The step of laser marking at least a portion of at least one surface of the rotor medium on the side corresponding to the first and / or second side of the gas adsorption rotor may include creating a mark configured to identify the rotor medium configuration of the rotor portion. The mark may be configured to optically identify the rotor medium configuration of the rotor portion. Thus, the mark may include a QR code, barcode, or other standard / proprietary code for ID. The gas adsorption rotor can also be individualized by including a company logotype or similar in the mark. The step of laser marking at least a portion of at least one surface may be an iterative process in which the entire surface is first laser marked with a relatively low first intensity and / or power to smooth the surface, and then a specific portion of the surface is laser marked with an increased second intensity and / or power to create the mark. Alternatively, the laser marking may be performed in a single step, alternating between different intensities and / or powers.

[0025] The method may further include applying a transparent coating to the surface of the gas adsorption rotor, at least partially laser-marked, on the first and / or second sides. The coating hardens the surface. In addition to the advantages described above, the use of a transparent coating facilitates manufacturing and improves the working environment. The coating may be applied by conventional methods, such as spraying the coating onto the rotor medium. Alternatively, the method may include applying a colored coating to the rotor medium.

[0026] In one example, the block of rotor medium is laser-marked before it is machined into at least one rotor section. Laser marking before machining is advantageous because it allows markings to indicate the shape of the rotor section to be machined from the block of rotor medium. Thus, the laser marking may be applied to a predetermined area of ​​the surface of the rotor medium corresponding to the shape of the rotor section, making it visible how the machining of the block into the rotor section should be controlled by humans and / or machines. The markings may include, for example, the contour of the rotor section shape. The block of rotor medium may be used to cut out multiple rotor sections, and in this way, the laser marking can act as a guide for where to cut, making the machining process easier. Furthermore, laser marking the block of rotor medium before machining allows for earlier identification of the rotor section compared to the current method of using color coating to identify the rotor section. Identifying the rotor section as early as possible in the manufacturing process is advantageous and reduces the risk of mixing rotor sections from different blocks after machining.

[0027] In another example, the block is machined into at least one rotor section, and then laser marking is applied to the rotor medium. Thus, laser marking may be applied to the created rotor section.

[0028] The laser marking step may further include performing laser marking on at least a part of the surface on the side of at least one rotor part corresponding to the circumferential side of the gas adsorption rotor. Therefore, the laser marking of the rotor medium may include performing laser marking on the peripheral side of the rotor part.

[0029] The method may include the step of polishing the first and second sides of the rotor medium block, and the laser marking is performed after polishing. By polishing the rotor medium block, the surface is flattened and a more uniform / planar surface is achieved.

[0030] The method may also include the step of assembling the rotor part into the gas adsorption rotor.

Brief Description of the Drawings

[0031] The above objects of the present invention, as well as additional objects, features, and advantages, will be more fully understood by referring to the following illustrative and non-limiting detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings.

[0032] [Figure 1] A gas adsorption rotor according to an example of the present disclosure is schematically shown. [Figure 2a-2b] The rotor medium of the gas adsorption rotor according to an example of the present disclosure is schematically shown. [Figure 3] An example of the laser-marked surface of the gas adsorption rotor is schematically shown. [Figure 4] An example of the laser-marked surface on the block of the rotor medium is schematically shown. [Figure 5] The surface of the laser-marked rotor medium is shown. [Figure 6] A manufacturing method of a gas adsorption rotor according to the present disclosure is schematically shown.

Embodiments for Carrying Out the Invention

[0033] The present invention will become apparent from the following detailed description. The detailed description and specific examples disclose preferred embodiments of the present disclosure for illustrative purposes only. Those skilled in the art will understand from the guidance of the detailed description that modifications and alterations are possible within the scope of the present disclosure.

[0034] Therefore, it should be understood that the inventions disclosed herein are not limited to specific components of the described devices or specific steps of the described methods, and that these devices and methods can vary. It should also be understood that the terms used herein are used solely for the purpose of describing specific embodiments and are not intended to be limiting. Furthermore, it should be noted that the articles “a,” “an,” “the,” and “said” used in the specification and appended claims are intended to mean that there is one or more elements unless explicitly stated otherwise in the context. Also, “equipped with,” “includes,” “contains,” and similar phrases are not intended to exclude other elements or steps.

[0035] Figure 1 schematically shows an air treatment gas adsorption rotor 10 according to an example of the present invention. The gas adsorption rotor 10 comprises a rotor medium 20. The rotor medium 20 typically comprises a corrugated glass fiber structure containing a hygroscopic desiccant such as silica gel, lithium chloride, or hydrophobic zeolite adsorbent. The rotor medium 20 comprises channels 22 that extend axially parallel to the rotation axis A of the gas adsorption rotor 10.

[0036] The gas adsorption rotor 10 comprises a first side 12, a second side 14 on the opposite side, and a circumferential side 16. Gas adsorption rotors are well known in the art and, as shown, typically comprise at least one regeneration section 11 and one process section 13. Furthermore, the gas adsorption rotor 10 may include a purge section (not shown). In this example, the regeneration section 11 and the process section 13 are separated by a divider 15. Although only one regeneration section is shown in Figure 1, the disclosures herein are also applicable to rotors having several and / or divided regeneration sections. Furthermore, the disclosures herein are also applicable to rotors having a separated purge zone and / or other divisions of the rotor. Arrows P and R in Figure 1 represent the flow of process air passing through the process section 13 and regeneration air passing through the regeneration section 11, respectively.

[0037] The gas adsorption rotor 10 includes at least one rotor portion 30 of a rotor medium having a surface 32 on a first side 12 and / or second side 14 of the gas adsorption rotor 10, at least a portion of which is laser-marked. Laser marking makes the surface 32 smoother. Typically, the entire surface 32 of the rotor medium on the first side 12 and / or second side 14 of the gas adsorption rotor 10 is laser-marked.

[0038] Figures 2a and 2b schematically show the rotor medium of a gas adsorption rotor 10 for air treatment according to a different example of the present invention. The gas adsorption rotor 10 may be configured as shown in Figure 1. Figure 2a shows the gas adsorption rotor 10 and an enlarged view of the rotor medium 20, which is part of the gas adsorption rotor 10. In this example, the gas adsorption rotor 10 comprises two rotor portions 30 of the rotor medium 20. The enlarged view shows that the channels 22 of the rotor medium 20 are formed by corrugated panels 21 stacked on top of each other. The gas adsorption rotor has different configurations depending on the application. Channel or groove dimensions are one of the differences between gas adsorption rotors. Figure 2b shows several different corrugated panels 21 having different channel configurations.

[0039] Figure 3 schematically shows an air treatment gas adsorption rotor 10 according to an example of the present invention. The gas adsorption rotor 10 may be configured as shown in Figure 1. In this example, at least a portion of the surface 32, which is laser-marked, has marks 34 configured to identify the rotor medium configuration of the gas adsorption rotor 10. In this example, the entire surface of the first and second sides 12, 14 of the gas adsorption rotor 10 is laser-marked, and the marks 34 include a bright honeycomb pattern on a dark background. Thus, the marks 34 correspond to a specific rotor medium configuration of the gas adsorption rotor 10, and the rotor medium configuration may relate to the material treatment and / or channel dimensions of the rotor medium 20. The dark areas are achieved by using higher intensity and / or power when laser-marking the surface 32. The gas adsorption rotor 10 optionally has a transparent coating 40 on the surface 32 of the first side 12 and the second side 14 of the gas adsorption rotor 10.

[0040] Figure 4 shows a block 100 of rotor medium used in manufacturing the gas adsorption rotor 10 according to the present invention. The block 100 of rotor medium 20 has a surface 32 on a first side 112 corresponding to the first side 12 of the final gas adsorption rotor 10, which is at least partially laser-marked. The surface 32 which is at least partially laser-marked has marks 34 that make each rotor portion 30 formed from the rotor medium block 100 identifiable. The marks 34 cover different areas shaped to match the type of rotor portion 30. This facilitates the manufacturing process when machining the rotor portion 30 from the block 100. In this example, the marks 34 differ depending on the type of rotor portion 30. Although not shown, it is understood that a second side 114 of the block 100 opposite to the first side 112 may also have a surface 32 which is at least partially laser-marked.

[0041] Figure 5 shows the process of laser marking at least a portion of the surface of the rotor medium 20. The rotor medium 20 may be in the form of a block 100 or a rotor section 30. Laser marking is performed by lightly burning the upper surface of the rotor medium 20 with a thin, programmable laser beam. Laser marking removes any recognizable protrusions and makes the surface 32 of the rotor medium 20 smooth. This is shown in the figure, where the left surface is laser marked and the right surface is untreated.

[0042] Figure 6 schematically shows a method for manufacturing the gas adsorption rotor 10 according to the present invention. The method is used to manufacture the gas adsorption rotor 10 disclosed in any of Figures 1 to 5.

[0043] The method includes forming a block 100 of rotor medium 20 s101, the rotor medium 20 comprising corrugated panels 21 that form channels 22 extending through the block 100 from a first side 112 to an opposite second side 114 of the block 100, the first side 112 and the opposite second side 114 of the block 100 corresponding to the first side 12 and the second side 14 of the final gas adsorption rotor 10. The step s101 of forming the block 100 of rotor medium 20 may include performing a first material treatment of the raw materials to be used in the gas adsorption rotor 10. The first material treatment may include immersion of the raw materials in a chemical solution, and the chemical treatment is determined according to the intended use of the gas adsorption rotor 10. After the first material treatment, the treated raw materials may be heated to fix and dry the material. The material is then corrugated to form a panel 21 including one corrugated sheet and one flat sheet. The panel 21 is then stacked on top of the block 100 of rotor medium 20.

[0044] The method further includes machining block 100 into at least one rotor portion 30 for the gas adsorption rotor 10. This step preferably includes CNC machining of block 100.

[0045] Furthermore, the method includes step s102 of laser marking at least a portion of at least one surface 32 of the rotor medium 20 such that at least one rotor portion 30 has a laser-marked surface 32 on the side corresponding to the first side 12 and / or second side 14 of the gas adsorption rotor 10. Step s102 of laser marking at least a portion of at least one surface 32 of the rotor medium 20 on the side corresponding to the first side 12 and / or second side 14 of the gas adsorption rotor 10 may include creating a mark 34 configured to identify the rotor medium configuration of the rotor portion 30. The mark 34 may be configured to optically identify the rotor medium configuration of the rotor portion 30. Step s102 of laser marking at least one surface 32 may be an iterative process in which the entire surface is first laser-marked with a relatively low first intensity and / or power to smooth the surface, and then a portion of the surface is laser-marked with a higher second intensity and / or power to create the mark 34. Alternatively, laser marking s102 is performed in a single step, alternating between different intensities.

[0046] The laser marking s102 may be applied to the block 100 of the rotor medium 20 before machining s103 to at least one rotor portion 30. Alternatively, the laser marking s102 may be applied to the block 100 after machining s103 to the rotor portion 30, and therefore applied to the rotor portion 30.

[0047] The laser marking step s102 may further include laser marking on at least a portion of the surface of at least one rotor portion 30 corresponding to the circumferential side 16 of the gas adsorption rotor 10.

[0048] The method may further include a second material treatment s104 of the block 100 of the rotor medium 20. The second material treatment s104 may include chemical immersion. After such material treatment, the block 100 is typically dried for curing, which may also cause a change in the color of the rotor medium 20.

[0049] The method may also include step s105 of polishing the first side 112 and the second side 114 of the rotor medium block 100, and laser marking s102 is performed after polishing s105.

[0050] The method may further include applying a transparent coating 40 to a surface 32 on the first side 12 and / or second side 14 of the gas adsorption rotor 10, at least in part, which is laser-marked. The coating 40 hardens the surface 32. The coating 40 may be applied by conventional methods, such as spraying the coating onto the rotor medium.

[0051] The method may include step s107 of assembling the rotor section 30 onto the gas adsorption rotor 10.

[0052] Please note that the examples shown in the drawings are for illustrative purposes only, and many other alternatives are possible within the scope of the present invention.

Claims

1. A gas adsorption rotor (10) for air treatment, The rotor medium (20) has a corrugated panel (21) that forms a channel (22) that extends axially through the gas adsorption rotor (10) parallel to the rotation axis (A) of the gas adsorption rotor (10), The gas adsorption rotor (10) comprises a first side (12), a second side (14) opposite to the first side (12), and a circumferential side (16). The channel (22) extends from the first side (12) to the second side (14), The gas adsorption rotor (10) comprises a rotor portion (30) of a rotor medium having a surface (32) that is laser-marked in at least part of it. The gas adsorption rotor (10) is characterized in that the surface (32) on which at least a portion is laser-marked is located on at least one of the first side (12) and the second side (14) of the gas adsorption rotor (10).

2. The gas adsorption rotor (10) according to claim 1, wherein the first side (12) and / or the second side (14) of the gas adsorption rotor (10) is provided with a plurality of surfaces (32) on which at least a portion is laser-marked.

3. The gas adsorption rotor (10) according to claim 1 or 2, wherein the circumferential side (16) of the gas adsorption rotor (10) is provided with a surface (32) that is laser-marked in at least a portion thereof.

4. The gas adsorption rotor (10) according to any one of claims 1 to 3, wherein the laser-marked surface (32) of at least a portion of the rotor portion (30) is provided with marks (34) configured to identify the rotor medium configuration of the rotor portion (30).

5. The gas adsorption rotor (10) according to claim 4, wherein the mark (34) is configured to optically identify the rotor medium configuration of the rotor portion (30).

6. The gas adsorption rotor (10) according to any one of claims 1 to 5, further comprising a transparent coating (40) applied to the laser-marked surface (32) of at least a portion of the gas adsorption rotor (10).

7. Forming a block (100) of rotor medium (20) (s101), wherein the rotor medium (20) comprises corrugated panels (21) that form channels (22) extending through the block (100) from a first side (112) to the opposite second side (114) of the block (100), and the first side (112) and the second side (114) of the block (100) correspond to the first side (12) and the second side (14) of the final gas adsorption rotor (10), The process includes machining the block (100) into at least one rotor portion (30) for the gas adsorption rotor (10) (s103), The method further includes laser marking (s102) at least a portion of at least one surface of the rotor medium (20) such that at least one rotor portion (30) has a laser-marked surface (32) on the side corresponding to the first side (12) and / or second side (14) of the gas adsorption rotor (10), A method for manufacturing a gas adsorption rotor (10) for air treatment.

8. The method according to claim 7, wherein the block (100) of the rotor medium (20) is laser-marked (s102) before the block (100) is machined (s103) to at least one rotor portion (30).

9. The method according to claim 7, wherein the block (100) is machined (s103) into at least one rotor portion (30), and then the rotor medium (20) is laser marked (s102).

10. The process further includes the step of polishing (s105) the first side (112) and the second side (114) of the rotor media block (100), The method according to any one of claims 7 to 9, wherein the laser marking (s102) is performed after the polishing (s105).

11. The method according to any one of claims 7 to 10, wherein the step of applying the laser marking to at least a portion of at least one surface (s102) includes creating the mark (34) which is configured to identify the rotor medium configuration of the rotor portion (30) having the mark (34).

12. The method according to any one of claims 7 to 11, further comprising applying a transparent coating (40) to the laser-marked surface (32) of the rotor medium (20) (s106).

Images