Filter device having filter medium comprising electrically conductive material

Abstract

The invention relates to a filter device (F) for filtering an air flow (A). The filter device (F) comprises a filter medium (30) comprising an electrically conductive material. The filter device (F) further comprises a filter connection device comprising an electrically conductive material. The filter connection device comprises at least one clamping member (40) configured to be electrically conductively attached to an electrically conductive portion of the filter media (30) such that when the at least one clamping member (40) is attached to the filter media (30), the at least one clamping member (40) is configured to be electrically conductively attached to the electrically conductive portion of the filter media (30). The filter medium (30) can be removably electrically connected to at least one electrically conductive portion of an electrical device (U) by means of the filter connection device in order to perform an air purification operation when electrically connected.

Description

Technical Field

[0001] The present invention relates to a filtering device having a filter medium comprising a conductive material. The present invention also relates to an electrical device for electrically connecting to the filtering device. The present invention also relates to an air purification device comprising the filtering device and the electrical device. Background Art

[0002] In many different technical fields, such as different types of vehicles or buildings, air filtration systems are used to ensure the required air quality in cabs, buildings or other enclosed spaces.

[0003] Such a filtration system may include a filtering device comprising a particulate filter layer and a conductive filter layer. Such a filtration system may also include an electrical device, wherein the electrical device may be an ionization unit configured to ionize particles in the air to be purified to improve filter performance. The electrical device may be electrically connected to the filtering device for air purification operations.

[0004] US2021162331 A1 discloses a filter element having a filter medium with a particulate filter layer and a conductive filter layer, wherein the filter element includes a conductive edge strip connected to the outer side of the filter medium, wherein the edge strip forms a bag open towards one side. The bag is configured to receive the blade of an electronic control unit. Summary of the Invention

[0005] Object of the Invention

[0006] The object of the present disclosure is to provide a filtering device having a filter medium comprising a conductive material, and the filtering device can be safely, easily and effectively electrically connected to an electrical device for air purification operations, and can be safely, easily and effectively removed from the electrical device.

[0007] Another object of the present invention is to provide an electrical device for electrically connecting to the filtering device.

[0008] Another object of the present invention is to provide an air purification device comprising the filtering device and the electrical device. Summary of the Invention

[0010] These and other objects, which are apparent from the following description, are achieved by the filtering device, the electrical device and the air purification device set forth in the appended independent claims. Preferred embodiments of the filtering device and the electrical device are defined in the appended dependent claims.

[0011] Specifically, the object of the present invention is achieved by a filtering device for filtering an air flow, the filtering device comprising: a filtering medium comprising a conductive material; and a filter connecting device comprising a conductive material, the filter connecting device comprising at least one clamping member configured to conductively attach to a conductive portion of the filtering medium such that when the at least one clamping member is attached to the filtering medium, the filtering medium can be removably electrically connected to at least one electrically conductive portion of an electrical device via the filter connecting device, thereby performing an air purification operation during the electrical connection. The electrical device can be any electrical device adapted to perform an air purification operation by means of a filtering medium. According to one aspect of the present disclosure, the electrical device is an electrical device for a filtering medium comprising a conductive material, wherein the electrical device can be represented as an electrical filtering device. According to one aspect of the present disclosure, the electrical device is an electrical device associated with an air purification operation by means of a filtering device comprising a conductive material. According to one aspect of the present disclosure, the electrical device is an electrical device configured to be included in an air purification device comprising the filtering device.

[0012] Therefore, it is possible to electrically connect to an electrical device for an air purification operation safely, easily and effectively, and to remove the filtering device from the electrical device safely, easily and effectively. Therefore, it is possible to electrically connect to and remove from an electrical device fixedly arranged in a space of an air duct safely, easily and effectively. Therefore, it is possible to replace the filtering device, such as the filtering medium of the filtering device, safely, easily and effectively without removing the electrical device or some parts of the electrical device.

[0013] According to one aspect of the filtering device, the filtering medium has an inflow side and an outflow side opposite to the inflow side, the inflow side being configured to face the air flow during the air purification operation. When the filtering device is electrically connected to an electrical device and arranged in a space of an air duct, the direction in which the air flow flows towards the inflow side and the direction in which the air flow flows out from the outflow side after passing through the filtering medium can vary, and according to one aspect, can depend on the configuration of the air duct in which the air flows during the air purification operation. Therefore, according to one aspect, the direction in which the air flow flows towards the inflow side can have any suitable angle. Therefore, according to one aspect, the direction in which the air flow flows out from the outflow side can have any suitable angle.

[0014] According to one aspect, the filtering device is configured to be removably introduced into a compartment of an air duct via an opening, wherein the at least one clamping member is configured to be attached to the filter medium such that the filter connection means is aligned and electrically connected to the at least one electrically conductive part of the electrical device, which is fixedly arranged within the air duct. Thus, it is possible to electrically connect to the electrical device safely, easily and effectively for air purification operations, and it is possible to remove the filtering device from the electrical device safely, easily and effectively.

[0015] According to one aspect, the filtering device has a substantially planar main extension, wherein the at least one clamping member is configured to be attached to the filter medium such that the filtering device can be introduced into the compartment of the air duct by moving the filtering device in its main extension direction, so as to enable the electrical connection with the at least one electrically conductive part of the electrical device, and the filtering device can be removed from the compartment by moving the filtering device in its main extension direction, so that the at least one clamping member of the filtering device is disconnected from the at least one electrically conductive part of the electrical device. Therefore, it is possible to electrically connect to the electrical device safely, easily and effectively for air purification operations, and it is possible to remove the filtering device from the electrical device safely, easily and effectively. According to one aspect of the present disclosure, the at least one clamping member is configured to be attached to the filter medium such that the filtering device can be introduced into the compartment of the air duct (which is located downstream of the electrical device arranged in the compartment) by moving the filtering device in its main extension direction for making the electrical connection with the at least one electrically conductive part of the electrical device. According to one aspect of the present disclosure, when the filtering device is electrically connected to the electrical device, its structure and shape are adapted to the opening of the air duct and the space inside the air duct. The filtering device is configured to be introduced through the opening and to be arranged in the space inside the air duct during the air purification operation. The filtering device can have any suitable geometric shape, such as square, rectangular, circular, triangular, pentagonal, hexagonal, etc. According to one aspect of the present disclosure, the filtering device has a certain length, a certain width and a certain height. According to one aspect, the height corresponds to the distance between the inflow side and the outflow side. According to one aspect of the present disclosure, the main extension direction of the width and the main extension direction of the length are substantially orthogonal to the height. The filter medium of the filtering device can have any suitable structure, such as a pleated structure or a flat structure, i.e., a structure without pleats. The filter medium of the filtering device can have any suitable geometric shape, such as square, rectangular, circular, triangular, pentagonal, hexagonal, etc. According to one aspect of the present disclosure, the filter medium has a certain length, a certain width and a certain height. According to one aspect, the height corresponds to the distance between the inflow side and the outflow side. According to one aspect of the present disclosure, the main extension direction of the width and the main extension direction of the length are substantially orthogonal to the height.

[0016] According to one aspect of the filtration device, the at least one clamping member includes a conductive contact portion having a contact surface configured for electrical connection to the electrically conductive portion of the electrical device. Thus, electrical connection to the conductive portion / conductor of the electrical device can be easily and effectively achieved. According to one aspect, the clamping member is made of a conductive material. According to one aspect of the present disclosure, at least some portions of the clamping member are conductive so as to be able to connect to the conductive material of the filter medium and to make electrical connection with the conductive portion / conductor of the electrical device.

[0017] According to one aspect of the filtration device, the at least one clamping member includes a grasping portion configured to attach and electrically connect the at least one clamping member to the filter medium. Thus, the at least one clamping member can be easily and effectively provided to the filter medium of the filtration device. According to one aspect of the present disclosure, the grasping portion of the at least one clamping member is configured to be operable between a non-grasping position and a grasping position so as to be able to attach to the filter medium. According to one aspect of the present disclosure, the grasping portion of the at least one clamping member includes one or more retaining members configured to hold the at least one clamping member to the filter medium when the clamping member is attached to the filter medium.

[0018] According to one aspect of the filtration device, the at least one clamping member has an elastic property such that when arranged to be connected to the electrical device, the at least one clamping member approaches the at least one electrically conductive portion of the electrical device. Thus, during the air purification operation, the electrical connection with the electrical device can be easily and effectively maintained. According to one aspect of the filtration device, the at least one clamping member has an elastic property such that when arranged to be connected to the electrical device within the space of the air duct, the at least one clamping member approaches the at least one electrically conductive portion of the electrical device.

[0019] According to one aspect of the present disclosure, the at least one clamping member has an elastic property such that the at least one clamping member can be attached to the filter medium and, where applicable, removed from the filter medium. Thus, the at least one clamping member can be easily attached to and removed from the filter medium.

[0020] According to one aspect of the filtration device, the gripping portion of the at least one gripping member includes one or more conductive pins configured to be conductively connected to a conductive portion of the filtration medium when attached to the filtration medium. Thus, a conductive connection to the conductive portion of the filtration medium can be effectively achieved. According to one aspect of the present disclosure, the one or more conductive pins constitute or include the holding member. According to one aspect of the present disclosure, the one or more conductive pins include a holding member, wherein, according to one aspect, the holding member of the one or more conductive pins is constituted by one or more barbs on one or more of the one or more pins.

[0021] According to one aspect of the filtration device, the filtration medium includes at least two layers, the at least two layers including a first filtration layer and a second layer, the second layer being a conductive layer formed of the conductive material of the filtration medium, and the at least one gripping member being configured to be conductively attached to the conductive layer. According to one aspect of the present disclosure, the first filtration layer is the layer on the inflow side. According to one aspect of the present disclosure, the first filtration layer is a particulate filtration layer configured to be able to filter particles in an air flow during an air purification operation. According to one aspect of the present disclosure, the filtration medium includes a third filtration layer, wherein the second filtration layer as the conductive layer is configured to be disposed between the first filtration layer and the third filtration layer. According to one aspect of the present disclosure, the conductive layer is configured to be able to perform at least some particulate filtration during an air purification operation. According to one aspect of the present disclosure, the third filtration layer is a particulate filtration layer configured to be able to filter particles in an air flow during an air purification operation. The filtration medium may have any suitable number of filtration layers, the filtration layers including one or more particulate filtration layers and one or more conductive layers. According to one aspect, one or more filtration layers of the filtration medium may be configured to protect and / or support the one or more conductive layers. According to one aspect of the present disclosure, the at least one gripping member is configured to be conductively attached to the conductive layer via the first filtration layer. According to one aspect of the present disclosure, the at least one gripping member is configured to be conductively attached to the conductive layer via the first filtration layer and / or the third filtration layer. According to one aspect of the present disclosure, the filtration medium may include more than one conductive layer separated from each other, such as two conductive layers.

[0022] According to one aspect of the filtration device, the filtration medium has a pleated configuration with a set of pleats, wherein the at least one gripping member is configured to be attachable to one or more of the set of pleats of the filtration medium. Thus, effective filtration is achieved. Thus, an easy and effective attachment of the one or more gripping members is achieved.

[0023] According to one aspect of the filtration device, the filter medium has a flat configuration, wherein the inflow side and the outflow side opposite to the inflow side are arranged to form a substantially flat surface, and wherein the at least one clamping member is configured to be attachable at the inflow side and / or the outflow side of the filter medium.

[0024] According to one aspect of the filtration device, at least one of the at least one clamping member is configured to be attached to the inflow side of the filter medium. Thus, during the air purification operation, it can be easily electrically connected to the electrically conductive part of the electrical device arranged upstream of the filtration device. According to one aspect of the present disclosure, at least one of the at least one clamping member is configured to be attached to the outflow side of the filter medium. According to one aspect of the present disclosure, at least one of the at least one clamping member is configured to be attached to the inflow side of the filter medium, and at least one of the at least one clamping member is configured to be arranged on the outflow side of the filter medium.

[0025] According to one aspect of the filtration device, the filtration device includes an edge member configured to at least partially surround the filter medium. Thus, the filter medium can be effectively supported and held together. Thus, the filtration device can be easily and effectively arranged in the space of the air duct.

[0026] According to one aspect of the electrical device, the electrical device is configured to operate in a manner of applying different potentials, wherein one of the different potentials is configured to be applied to at least one electrically conductive part of the electrical device, and the other potential different from the one potential among the different potentials is configured to be applied to another electrically conductive part among at least one electrically conductive part of the electrical device.

[0027] According to one aspect of the electrical device, the electrical device includes an ionization unit configured to form an ionization region for charging suspended particles present in the air flow during the ionization operation, wherein the ionization unit includes at least one emission electrode configured to generate ions and includes at least one collection electrode, and wherein the conductive layer of the filter medium is configured to be electrically connected to at least one of the at least one collection electrode via the conductive filter connection device, and the at least one collection electrode is configured to form at least one electrically conductive part of the electrical device. The at least one emission electrode is configured to form at least one other electrically conductive part.

[0028] According to one aspect of the filtering device, the conductive material of the filter medium comprises at least two conductive parts separated from each other, wherein the connecting device is a first connecting device, wherein the filtering device comprises a second filter connecting device comprising a conductive material, the second filter connecting device comprising at least one clamping member, wherein at least one clamping member of the first filter connecting device is configured to be conductively attached to one of the at least two conductive parts of the filter medium, and at least one clamping member of the second filter connecting device is configured to be conductively attached to the other of the at least two conductive parts of the filter medium, such that when the at least one clamping member of the first filter connecting device is attached to the one conductive part of the filter medium and the at least one clamping member of the second filter connecting device is attached to the other conductive part of the filter medium, the filter medium can be removably electrically connected to the at least one electrically conductive part of the electrical device by means of the first filter connecting device and removably electrically connected to the one or more other electrically conductive parts of the electrical device by means of the second filter connecting device, so as to perform the air purification operation during the electrical connection.

[0029] Specifically, the object of the present invention is achieved by an electrical device comprising at least one electrically conductive part for electrical connection to the filter connecting device of the filtering device described herein for performing an air purification operation. Thus, a safe, easy and effective electrical connection can be made between the electrical device and the filtering device for performing an air purification operation, and the filtering device can be safely, easily and effectively removed from the electrical device.

[0030] According to one aspect, the electrical device comprises an electrical device connector which comprises or is operatively connected to the electrically conductive part of the electrical device for making the electrical connection with the at least one clamping member of the filter connecting device. Thus, a safe, easy and effective electrical connection can be made between the electrical device and the filtering device for performing an air purification operation, and the filtering device can be safely, easily and effectively removed from the electrical device.

[0031] According to one aspect, the electrical device connector has an elastic property such that when the electrical device connector is electrically connected to the filter connection device, it approaches the at least one clamping member of the filter connection device. Thus, during the air purification operation, the electrical connection with the filter device can be easily and effectively maintained. According to one aspect of the present disclosure, the electrical device connector has an elastic property so that when the filter device is arranged to be connected to the electrical device within the space of the air duct, it approaches the at least one clamping member of the filter device.

[0032] According to one aspect of the present disclosure, the electrical device includes a power supply device for supplying power to perform the air purification operation.

[0033] According to one aspect of the present disclosure, the electrical device includes an ionization unit configured to form an ionization region for charging suspended particles present in the air stream during the air purification operation. The ionization unit includes at least one emission electrode. According to one aspect of the present disclosure, the ionization unit includes at least one collection electrode. In the case of an electrical device including the ionization unit, according to one aspect of the present disclosure, the conductive layer of the filter medium is configured to be connected to at least one of the at least one collection electrodes via the conductive filter connection device. The one or more collection electrodes are grounded or connected to another potential different from the potential of the at least one emission electrode to establish a required electric field and corona discharge together with the at least one emission electrode of the ionization unit, thereby forming an ionization region for charging suspended particles present in the air stream. The at least one collection electrode is configured to form at least one electrically conductive part of the electrical device.

[0034] According to one aspect of the present disclosure, an electrical device including the ionization device described herein includes a power supply device configured to supply power to one or more emission electrodes and one or more collection electrodes via a connector to charge the one or more emission electrodes. According to one aspect of the present disclosure, the electrical device includes a first connector device connecting the power supply device to the one or more emission electrodes, and a second connector device connecting the power supply device to the one or more collection electrodes.

[0035] Specifically, the object of the present invention is achieved by an air purification device for separating suspended particles from an air stream in an air duct. The air purification device includes the filter device described herein and the electrical device described herein. According to one aspect of the present disclosure, at least some parts of the filter device of the air purification device and the electrical device of the air purification device are configured to be arranged within the space of the air duct during the air purification operation.

[0036] According to one aspect of the present disclosure, an object of the present invention is achieved by an air purification system including an air duct and the air purification device described herein, the air purification device being configured to be disposed within the air duct during an air purification operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] To better understand the present disclosure, refer to the following detailed description and read it in conjunction with the accompanying drawings. In all the figures of the drawings, the same reference numerals denote the same components, and in the drawings:

[0038] Figure 1 A perspective view of a filtration device according to one aspect of the present disclosure is schematically shown;

[0039] Figure 1a Schematically shown is a part of the Figure 1 filtration device in according to one aspect of the present disclosure, wherein a clamping member of a filter connecting device is attached to a filter medium of the filtration device;

[0040] Figure 2a A perspective view of a clamping member according to one aspect of the present disclosure is schematically shown;

[0041] Figure 2b A perspective view of the clamping member in a non-gripping position according to one aspect of the present disclosure is schematically shown;

[0042] Figure 2c Schematically shown is a Figure 2b side view of the clamping member in according to one aspect of the present disclosure;

[0043] Figure 2d Schematically shown is a Figure 2b perspective view of the clamping member in a gripping position in according to one aspect of the present disclosure;

[0044] Figure 2e Schematically shown is a Figure 2d side view of the clamping member in according to one aspect of the present disclosure;

[0045] Figure 3 A perspective view of a filtration device and an electrical device disposed within an air duct according to one aspect of the present disclosure, the filtration device being disconnected from the electrical device, is schematically shown;

[0046] Figure 3a Schematically shown is a Figure 3 perspective view of the filtration device in according to one aspect of the present disclosure being introduced into the Figure 3 air duct in and electrically connected to an electrical device in the air duct;

[0047] Figure 4a Schematically shows a side cross-sectional view of a filtering device according to one aspect of the present disclosure; Figure 3 in;

[0048] Figure 4b Schematically shows a side cross-sectional view of an electrical device arranged in an air duct according to one aspect of the present disclosure; Figure 3 in;

[0049] Figure 4c Schematically shows a side cross-sectional view of a filtering device introduced into an air duct and electrically connected to an electrical device in the air duct according to one aspect of the present disclosure; Figure 4a in the Figure 4b air duct of;

[0050] Figure 5 Schematically shows a perspective view of a filtering device and an electrical device arranged in an air duct, the filtering device being disconnected from the electrical device, according to one aspect of the present disclosure;

[0051] Figure 5a Schematically shows a Figure 5 filtering device introduced into an air duct and electrically connected to an electrical device in the air duct according to one aspect of the present disclosure; Figure 5 in the

[0052] Figure 6a Schematically shows a side cross-sectional view of a filtering device according to one aspect of the present disclosure; Figure 5 in;

[0053] Figure 6b Schematically shows a side cross-sectional view of an electrical device arranged in an air duct according to one aspect of the present disclosure; Figure 5 b in;

[0054] Figure 6c Schematically shows a Figure 6a filtering device introduced into an air duct and electrically connected to an electrical device in the air duct according to one aspect of the present disclosure; Figure 6b in the

[0055] Figure 7 Schematically shows a perspective view of a filtering device and an electrical device connector of an electrical device disconnected from the filtering device according to one aspect of the present disclosure;

[0056] Figure 7a Schematically shows a Figure 7A perspective view of a part of the filtering device, wherein the clamping member of the filter connecting device is attached to the filtering medium of the filtering device, and Figure 7 the electrical device connector in is disconnected from the filtering device;

[0057] Figure 7b Schematically shows the Figure 7 electrical device connector in disconnected from the filtering device according to one aspect of the present disclosure;

[0058] Figure 8 Schematically shows Figure 7 a perspective view of the filtering device in and the electrical device connector electrically connected to the filtering device according to one aspect of the present disclosure;

[0059] Figure 8a Schematically shows Figure 8 a perspective view of a part of the filtering device in, wherein the clamping member of the filtering device as Figure 7a shown is electrically connected to the electrical device connector;

[0060] Figure 9a Schematically shows Figure 7 a side cross-sectional view of a part of the filtering device in according to one aspect of the present disclosure;

[0061] Figure 9b Schematically shows Figure 7 a side cross-sectional view of the electrical device connector in according to one aspect of the present disclosure;

[0062] Figure 9c Schematically shows Figure 9a the part of the filtering device in electrically connected to Figure 9b the electrical device connector in a side cross-sectional view;

[0063] Figure 10 Schematically shows a side view of the filtering device and the electrical device connector of the electrical device disconnected from the filtering device according to one aspect of the present disclosure;

[0064] Figure 10a Schematically shows Figure 10 a side cross-sectional view of a part of the filtering device in, wherein the clamping member of the filter connecting device is attached to the filtering medium of the filtering device;

[0065] Figure 10b Schematically shows Figure 10 the side view of the electrical device connector in disconnected from the filtering device according to one aspect of the present disclosure;

[0066] Figure 11 Schematically shows a side view of a filtering device according to one aspect of the present disclosure and an electrical device connector electrically connected to the filtering device; Figure 10 and a side view of a part of the filtering device in

[0067] Figure 11a Schematically shows a side view of a part of a filtering device according to one aspect of the present disclosure, wherein a clamping member of the filtering device as Figure 11 shown is electrically connected to the electrical device connector; Figure 10a shown is electrically connected to the electrical device connector;

[0068] Figure 12 Schematically shows a side view of a filtering device and an electrical device connector of an electrical device disconnected from the filtering device according to one aspect of the present disclosure;

[0069] Figure 12a Schematically shows Figure 12 a side sectional view of a part of a filtering device in

[0070] Figure 12b Schematically shows a Figure 12 side view of an electrical device connector disconnected from the filtering device according to one aspect of the present disclosure;

[0071] Figure 13 Schematically shows a side view of a filtering device and an electrical device connector electrically connected to the filtering device according to one aspect of the present disclosure; Figure 12 and a side view of a part of the filtering device in

[0072] Figure 13a Schematically shows a side view of a part of a filtering device according to one aspect of the present disclosure, wherein a clamping member of the filtering device as Figure 13 shown is electrically connected to the electrical device connector; Figure 12a shown is electrically connected to the electrical device connector;

[0073] Figure 14 Schematically shows a side view of a filtering device according to one aspect of the present disclosure;

[0074] Figure 14a Schematically shows a side view of a part of a filtering device according to one aspect of the present disclosure, wherein a clamping member of a filter connecting device of the filtering device is attached to a filter medium of the filtering device; Figure 14 in

[0075] Figure 15A perspective view of a filtration device according to one aspect of the present disclosure is schematically shown;

[0076] Figure 15a A perspective view of a clamping member according to one aspect of the present disclosure is schematically shown;

[0077] Figure 16a Schematically shows according to one aspect of the present disclosure Figure 15 A plan view of the filtration device in;

[0078] Figure 16b Schematically shows according to one aspect of the present disclosure Figure 16a A side cross-sectional view of the filtration device in; and

[0079] Figure 17 A schematic illustration of an air purification device 100 according to one aspect of the present disclosure is shown. DETAILED DESCRIPTION

[0080] As used herein, "airflow" refers to air that flows through the air purification device during use. The airflow can be generated in an active manner, i.e., driven by a fan or other similar air displacement device, or can be generated in a passive manner, i.e., when a vehicle including such an air purification device is in motion, by guiding air through the filter of the air purification device. The airflow can also be driven by the vehicle's air conditioning system.

[0081] As used herein, the term "filter connection device" refers to a device that includes a conductive material and can be attached to a filter medium so as to be able to make an electrical connection with the conductive material of the filter medium. The filter connection device includes at least one clamping member. The filter connection device can be constituted by a single clamping member. The filter connection device can be constituted by two or more clamping members. The filter connection device can be constituted by one or more clamping members and one or more additional components. The additional components are conductive components for making a conductive connection to the conductive material of the filter medium and / or attachment components for attaching to the filter medium.

[0082] As used herein, the term "clamping member" related to the filter connection device including at least one clamping member refers to any member configured to be suitable for making a conductive attachment to a filter medium containing a conductive material and for making an electrical connection to an electrically conductive part of an electrical device. According to one aspect of the filtration device, the at least one clamping member includes a conductive contact portion having a contact surface configured for making a conductive connection to the electrically conductive part of the electrical device. The clamping member can be made of a conductive material or at least have a conductive portion so as to be able to make a connection with the conductive material of the filter medium and to make a conductive connection with the conductive part / conductive portion of the electrical device.

[0083] According to one aspect of the present disclosure, the at least one clamping member configured to be conductively attached to the conductive portion of the filter medium is configured to be attached to the conductive portion of the filter medium such that it is non-removably attached and, for example, cannot be reused in the case where the filter medium needs to be replaced. According to one aspect of the present disclosure, it can be said that such at least one clamping member configured to be conductively attached to the conductive portion of the filter medium is configured to be permanently attached to the conductive portion of the filter medium, wherein, in the case where the filter medium needs to be replaced, a new at least one clamping member is attached to the conductive portion of the filter medium. According to one aspect, such a filter device is configured at the time of manufacture to have the at least one clamping member configured to be conductively attached to the conductive portion of the filter medium such that the at least one clamping member is attached to the filter device.

[0084] According to one aspect of the present disclosure, the at least one clamping member configured to be conductively attached to the conductive portion of the filter medium is configured to be removably attached to the conductive portion of the filter medium such that, in the case where the filter medium needs to be replaced, the at least one clamping member can be reused for other filter media containing a conductive material, wherein the at least one clamping member is configured to be conductively attached to the conductive portion of the filter medium. According to one aspect, such at least one clamping member can be attached to any suitable filter medium containing a conductive material that is not initially provided with any such clamping member.

[0085] As used herein, the terms "airflow" and "air stream" refer to the airflow passing through the filter device in use. According to one aspect of the present disclosure, a "filter device in use" refers to a state in which the filter medium of the filter device is electrically connected to an electrical device via a connection device of the filter device during an air purification operation. The airflow can be generated in an active manner, i.e., driven by a fan or other similar air displacement device, or can be generated in a passive manner, i.e., when a vehicle including such a filter device is in motion, by guiding air through the filter medium. The airflow can also be driven by the air conditioning system of the vehicle.

[0086] According to one aspect of the present disclosure, the term "filter medium" can refer to a filter structure including a gas-permeable porous structure. According to one aspect of the present disclosure, the term "filter medium" can be used herein to denote a natural material, synthetic material, or article for filtration that has a gas-permeable porous structure and can capture at least a portion of the suspended particles.

[0087] The term "filter medium comprising a conductive material" in this document refers to any suitable filter medium containing a conductive material to which a filter connection device comprising a conductive material can be conductively attached such that the filter device can be electrically connected to at least one electrically conductive part of an electrical device by means of the filter connection device. There are various ways to implement a filter medium comprising a conductive material.

[0088] According to one aspect of the present disclosure, the conductive material can form an integral part of the filter medium, such as a carbon filter layer or the like. According to one aspect of the present disclosure, the conductive material can also be added in the form of a conductive particulate medium, for example, by spraying or other means applying conductive particles on the inner surface of the filter medium. Another alternative is to add a conductive material mesh, such as a metal mesh, on the surface of the filter medium or between the layers of the filter medium.

[0089] The filter medium according to the present disclosure can be provided with a plurality of layers, which can include layers configured to adhere to particulate matter passing therethrough. These layers can also include conductive layers, i.e., layers of conductive material, such as activated carbon layers. These layers can also include anti-allergen layers configured to prevent allergens floating in the air. According to one aspect of the present disclosure, the filter medium can include more than one conductive layer separated from each other, for example, two conductive layers. In this document, more than one conductive layer (for example, two conductive layers) can refer to such a plurality of layers, for example, two layers in which one layer is located above the other layer and they do not contact each other, or can refer to a plurality of layers (for example, two layers) at the same horizontal height but divided into more than one layer (for example, two layers).

[0090] The conductive material (such as a conductive layer, such as an activated carbon layer) of the filter medium (such as a conductive part) is configured to be grounded via a conductive filter connection device or connected to another potential of an electrical device. The conductive layer (such as an activated carbon layer) is configured to be grounded via a conductive filter connection device or connected to another potential of an electrical device.

[0091] The conductive layer in the shape of an activated carbon layer can also be designed to protect personnel, such as the driver and passengers of a vehicle, from harmful and unpleasant gases.

[0092] According to one aspect of the present disclosure, the term "air purification operation" can involve: charging the particles in the air stream upstream of the filter medium and / or charging the filter medium comprising the conductive material; and capturing the particles / charged particles in the air stream by means of the filter medium comprising the conductive material.

[0093] The phrase associated with "an electrical device configured to be fixedly arranged within or connected to an air duct" in this document refers to such an electrical device that is intended to be arranged within or connected to an air duct and operably connected so as to perform an air purification operation when a filtration device is electrically connected to the electrical device within the air duct. The filtration device is configured to be removably electrically connected to the electrical device when the electrical device is fixedly arranged as such. However, according to one aspect of the present disclosure, the phrase "an electrical device configured to be fixedly arranged within or connected to an air duct" does not exclude the case where the electrical device can be removed from the fixed position when needed (e.g., for repair or maintenance). However, such removal is not related to the removal of the filtration device, which is configured to be arranged within the air duct and electrically connected to the electrical device such that the filtration device can be easily disconnected from the electrical device and removed from the air duct while the electrical device remains fixedly arranged within or connected to the air duct.

[0094] According to one aspect of the present disclosure, the electrical device is an electrical device for a filter medium containing a conductive material, wherein the electrical device can be represented as an electrical filtration device. According to one aspect of the present disclosure, the electrical device is an electrical device associated with an air purification operation by means of a filter device containing a conductive material. According to one aspect of the present disclosure, the electrical device is an electrical device configured to be included in an air purification device including the filter device. According to one aspect of the present disclosure, the electrical device is an electrical device configured to be able to be electrically connected to a conductive portion of a filter medium for performing an air purification operation. According to one aspect of the present disclosure, the electrical device is an electrical device configured to operate in a manner of applying different potentials, wherein the different potentials are configured to be applied to different electrically conductive portions of the electrical device for performing the air purification operation. According to one aspect of the present disclosure, the electrical device is an electrical device configured to operate in a manner of applying at least two different potentials, wherein one of the at least two potentials is configured to be applied to at least one electrically conductive portion of the electrical device, to which the filter medium can be electrically connected by means of the filter connection device including the clamping member, and the other of the at least two potentials is configured to be applied to another electrically conductive portion of the electrical device so as to be able to perform the air purification operation. According to one aspect of the present disclosure, the electrical device includes a power supply device for supplying power so as to be able to provide the at least two potentials. According to one aspect of the present disclosure, the electrical device includes a power supply device for supplying power so as to be able to perform the air purification operation. The term "electrical device" can also be represented as "electronic device".

[0095] According to one aspect of the present disclosure, the term "electrically conductive part of an electrical device" may refer to any type of electrical part of an electrical device that can be connected to (i.e., has) a potential / electrical ground. The term "electrically conductive part of an electrical device" may include any suitable electrode member that can provide the potential / electrical ground required for the air purification operation.

[0096] According to one aspect of the present disclosure, an electrical device includes an ionization unit configured to form an ionization region for charging suspended particles present in an air flow during an ionization operation, wherein the ionization unit includes at least one emission electrode configured to generate ions and includes at least one collection electrode. In the case of an electrical device including the ionization unit, a conductive layer (e.g., an activated carbon layer) is configured to be connected to at least one of the at least one collection electrodes via the conductive filter connection means, and the one or more collection electrodes are grounded or connected to another potential different from the potential of the at least one emission electrode, so as to establish a required electric field and corona discharge together with the at least one emission electrode of the ionization unit, thereby forming an ionization region for charging suspended particles present in the air flow. Therefore, the at least one collection electrode is configured to form at least one electrically conductive part of the electrical device. In addition, at least one of the at least one emission electrodes is configured to form one or more other electrically conductive parts of the electrical device. According to one aspect, the at least one emission electrode may be connected to one of the at least two potentials, and the at least one collection electrode may be connected to the other of the at least two potentials, and the other potential is different from the potential to which the at least one emission electrode is connected. Therefore, the suspended particles charged in the ionization region formed by the air purification device (i.e., the filtering device electrically connected to the electrical device including the ionization unit) are more likely to be captured by the filter medium. The term "ionization unit" is used herein to represent a combination of an emission electrode and a collection electrode. The term "emission electrode" may also be expressed as "emitter" or "sending electrode". The term "collection electrode" may also be expressed as "collector", "receiver electrode" or "receiver".

[0097] According to one aspect of the filtration device, the electrical device includes a filter charging unit configured to charge the filter medium of the filtration device. Such an electrical device includes the one or more electrical parts, and the filter medium can be electrically connected to the one or more electrical parts by means of the filter connection device including the clamping member. One of the at least two potentials is configured to be applied to at least one electrically conductive part of the electrical device, and the filter medium can be electrically connected to the at least one electrically conductive part by means of the filter connection device including the clamping member. The electrical device further includes one or more other electrical parts, wherein the other of the at least two potentials is configured to be applied to the one or more other electrically conductive parts to charge the filter medium including the conductive layer, so as to enable an air purification operation. Such an electrical device can be related to the polarization of the filter medium. According to one aspect of the present disclosure, the electrical device including the filter charging unit can be configured to be included in a filter purification device including a filtration device, the filtration device having a filter medium including a conductive material, the filter medium including at least two conductive parts separated from each other. According to one aspect, the at least two conductive parts are at least two conductive layers separated from each other. According to one aspect of the present disclosure, the filtration device charged by means of the electrical device including the filter charging unit is configured to capture charged particles in an air stream. According to one aspect of the present disclosure, the electrical device can also be configured to charge particles in the air stream.

[0098] Figure 1 A perspective view of a filtration device F according to one aspect of the present disclosure is schematically shown; and Figure 1a Schematically shown according to one aspect of the present disclosure Figure 1 A perspective view of a part of the filtration device F in which the clamping member 40 of the filter connection device is attached to the filter medium 30 of the filtration device F.

[0099] Therefore, the filtration device F includes a filter medium 30. The filter medium 30 has an inflow side 30a and an outflow side 30b opposite to the inflow side. The inflow side is configured to face the air stream A during an air purification operation, and the purified air passing through the filter medium 30 is intended to flow out from the outflow side.

[0100] As Figure 1a Schematically shown in, the filter medium 30 according to the present disclosure contains a conductive material X2. According to one aspect of the present disclosure, the conductive material can form an integral part of the filter medium 30. According to Figure 1a And Figure 10a In the embodiments of, the conductive material X2 is a conductive layer X2, such as a carbon filter layer or the like.

[0101] According to Figure 1a and Figure 10a the embodiment in, the filter medium 30 includes a first filter layer X1 and a second layer X2, and the second layer X2 is a conductive layer X2 formed of the conductive material X2 of the filter medium 30.

[0102] According to Figure 1a and Figure 10a the embodiment in, the first filter layer X1 is a layer on the inflow side 30a. According to one aspect of the present disclosure, the first filter layer X1 is a particulate filter layer configured to filter particles in an air stream during an air purification operation. According to Figure 1a and Figure 10a the embodiment in, the filter medium 30 includes a third filter layer X3, wherein the second filter layer X2 as the conductive layer X2 is configured to be disposed between the first filter layer X1 and the third filter layer X3. According to one aspect of the present disclosure, the conductive layer X2 may be configured to perform at least some particulate filtering during an air purification operation. According to one aspect of the present disclosure, the third filter layer X3 may be configured to support the conductive layer X2. According to one aspect of the present disclosure, the third filter layer X3 may be a particulate filter layer configured to perform at least some filtering of particles in an air stream during an air purification operation.

[0103] The filter device F further includes a filter connection device including a conductive material. The filter connection device includes at least one clamping member 40 configured to be conductively attached to a conductive portion of the filter medium 30. In Figure 1 and Figure 1a the filter connection device is constituted by a single clamping member 40.

[0104] The clamping member 40 is configured to be conductively attached to the conductive layer X2.

[0105] According to one aspect of the present disclosure, the clamping member 40 is configured to be conductively attached to the conductive layer X2 via the first filter layer X1. According to one aspect of the present disclosure, the clamping member 40 is configured to be conductively attached to the conductive layer X2 via the first filter layer X1 and / or the third filter layer X3.

[0106] According to Figure 1 and Figure 1a the embodiment shown, the filter medium 30 of the filter device F has a pleated structure with a set of pleats 32. Accordingly, the filter medium 30 has a folded structure forming a bellows. The set of pleats 32 has longitudinal extensions that extend substantially parallel to each other.

[0107] The set of pleats 32 has inflow peaks on the inflow side 30a, and these inflow peaks constitute the top portion of the inflow side 30a, that is, the end portion configured to be closest to the air flow and thus to receive first the air flow directed to the inflow side 30a. The set of pleats 32 has inflow valleys on the inflow side 30a, and these inflow valleys constitute the bottom portion of the inflow side 30a, that is, the end portion configured to be farthest from the air flow and thus to receive last the air flow directed to the inflow side 30a.

[0108] The set of pleats 32 has outflow peaks on the outflow side 30b, and these outflow peaks constitute the top portion of the outflow side 30b, which constitutes the side opposite to the outflow valleys on the inflow side 30a. The set of pleats 32 has outflow valleys on the outflow side 30b, and these outflow valleys constitute the side opposite to the inflow peaks on the inflow side 30a.

[0109] According to one aspect of the present disclosure, the filter medium 30 has a certain length L1, a certain width W1, and a certain height H1. According to one aspect, the height H1 corresponds to the distance between the inflow side 30a and the outflow side 30b. According to one aspect, Figure 1 and Figure 1a the height H1 of the filter medium in

[0110] corresponds to the shortest distance between the inflow peaks on the inflow side and the outflow peaks on the outflow side 30b. According to one aspect of the present disclosure, the main extension direction of the width W1 and the main extension direction of the length L1 are substantially orthogonal to the height H1. Thus, according to one aspect of the present disclosure, the filter medium 30 of the filter device F has a substantially planar main extension portion.

[0111] According to Figure 1 and Figure 1a the illustrated embodiment, the clamping member 40 of the filter device F is attached to the pleat 32 in the set of pleats 32 of the filter medium 30 such that the clamping member 40 is electrically conductively connected to the conductive material of the filter medium 30. According to Figure 1 and Figure 1a the illustrated embodiment, the clamping member 40 of the filter device F is attached to the pleat 32 in the set of pleats 32 of the filter medium 30 on the inflow side 30 of the filter medium 30. According to Figure 1 and Figure 1aIn the illustrated embodiment, the clamping member 40 of the filtering device F is attached to the inflow peak of the pleat 32 of the set of pleats 32 of the filter medium 30 on the inflow side 30a of the filter medium 30.

[0112] The filtering device F is configured such that when the clamping member 40 is attached to the filter medium 30, the filter medium 30 can be removably electrically connected to an electrical device (not shown in Figure 1 or Figure 1a , see for example Figure 3 and Figure 3a ) via at least one electrically conductive part of the filter clamping member 40 forming or included in the filter connection device, so as to perform an air purification operation during electrical connection.

[0113] According to one aspect of the present disclosure, as shown for example in Figure 1a , the at least one clamping member 40 includes a conductive contact part 42 having a contact surface 42a configured for conductive connection to the electrically conductive part of the electrical device, see for example Figure 9c .

[0114] According to one aspect of the present disclosure, the at least one clamping member 40 includes a grasping part 44 configured to attach and conductively connect the at least one clamping member 40 to the filter medium 30. Figures 2a to 2e Different views of the clamping member 40 having the grasping part 44 are schematically shown.

[0115] According to one aspect, Figures 2a to 2e the clamping member in Figure 1 and Figure 1a may correspond to the clamping member 40 in

[0116] The clamping member 40 includes a conductive contact part 42 having a contact surface 42a configured for conductive connection to the electrically conductive part of the electrical device. The conductive contact part 42 of the clamping member 40 has an attachment side 42b configured to face the filter medium 30 when the clamping member is attached to the filter medium 30, for example, to face the peak of the pleat of the filter medium 30 having a pleated structure. The attachment side 42b is opposite to the contact surface 42a. Figures 2a to 2e According to one aspect of the present disclosure, as shown in Figure 2a , the clamping member 40 has a longitudinal extension with two end sides 40a, 40b opposite to each other, see Figures 2a to 2e . According to one aspect of the present disclosure, as shown in Figure 2b and Figure 2dAs shown, the clamping member 40 has a tubular structure configured to grip around the peaks of the pleats of a filter medium having a pleated structure when the clamping member 40 is in the gripping position. The tubular structure of the clamping member 40 is configured such that there is an opening substantially opposite the contact portion 42, and the opening extends along the longitudinal extension of the clamping member 40. The longitudinally extending opening is formed by two opposite edges 40c, 40d of the clamping member 40.

[0117] According to one aspect of the present disclosure, the gripping portion 44 of the at least one clamping member 40 includes one or more conductive pins 44a configured to be electrically connected to the conductive portion of the filter medium 30 when attached to the filter medium 30. In Figures 2a to 2e the illustrated embodiment, the gripping portion 44 includes a set of pins 44a, here three pins 44a. According to one aspect of the present disclosure, the conductive pins 44a are configured to protrude from the two opposite edges 40c, 40d of the clamping member 40 so as to be effectively electrically connected to the conductive portion of the filter medium when the clamping member 40 is attached to the filter medium.

[0118] According to one aspect of the present disclosure, the gripping portion 44 of the at least one clamping member 40 includes one or more retaining members configured to hold the at least one clamping member 40 when the clamping member 40 is attached to the filter medium 30.

[0119] According to one aspect of the present disclosure, the conductive pins 44a constitute or include the retaining members. According to one aspect of the present disclosure, the conductive pins 44a include retaining members, and in this case, according to one aspect, the retaining members of the one or more conductive pins are constituted by one or more barbs (not shown) on one or more of the one or more pins 44a.

[0120] Figure 2a A perspective view of the clamping member 40 according to one aspect of the present disclosure is schematically shown, where the clamping member 40 is in the gripping position. Figure 2b and Figure 2c A perspective view and a side view of the clamping member 40 according to one aspect of the present disclosure in the non-gripping position are respectively schematically shown. Figure 2d and Figure 2e A perspective view and a side view of the clamping member 40 in Figure 2b when in the gripping position according to one aspect of the present disclosure are respectively schematically shown.

[0121] According to one aspect of the present disclosure, the clamping member 40 can be switched between a non-gripping position and a gripping position to facilitate attachment to the filter medium 30. Accordingly, the gripping portion 44 of the clamping member 40 is configured to be switchable between a non-gripping position and a gripping position to facilitate attachment to the filter medium 30.

[0122] According to one aspect of the present disclosure, the clamping member 40 has an elastic property such that the clamping member can be attached to the filter medium 30 and, where applicable, removed from the filter medium 30. According to one aspect of the present disclosure, the elastic property of the clamping member 40 provides an elastic function such that the gripping portion 44 including the conductive pin 44a is configured to strive towards the filter medium, such as towards the folds of the filter medium, when the clamping member 40 is attached to the filter medium. Accordingly, according to one aspect of the present disclosure, the clamping member 40 is elastically deformable. According to one aspect of the present disclosure, the clamping member 40 is elastically deformable such that, in an attachment operation of attaching the clamping member to the filter medium, by applying a force to expand the width of the opening substantially opposite the contact portion 42, the gripping portion 44 of the clamping member 40 can first be moved from the gripping position to the non-gripping position, and then the attachment can be performed, wherein a force is applied to the clamping member to connect it to the filter medium, and wherein, when the force holding the clamping member 40 in the non-gripping position is released, the gripping portion 44 of the clamping member 40 is configured to return to the gripping position, thereby achieving the attachment to the filter medium.

[0123] According to another aspect of the present disclosure, the clamping member 40 is plastically deformable such that, in an attachment operation of attaching the clamping member to the filter medium, the gripping portion 44 of the clamping member 40 is initially in the non-gripping position. In the attachment operation of attaching the clamping member to the filter medium, a force is applied to the clamping member 40 to connect it to the filter medium, wherein a certain force is applied to narrow the width of the opening substantially opposite the contact portion 42, causing the clamping member to plastically deform, thereby causing the gripping portion 44 to move to the gripping position, thereby achieving the attachment to the filter medium. Then, due to the plastic deformation, the gripping portion 44 of the clamping member 40 is configured to remain in the gripping position when attached to the filter medium. According to one aspect of the present disclosure, the clamping member 40 can be removed from the filter medium by applying a force exceeding a specific threshold to cause the gripping portion 44 to return to the non-gripping position.

[0124] Figure 3A perspective view schematically shows a filtration device F and an electrical device U arranged in an air duct D according to an aspect of the present disclosure, and the filtration device F is disconnected from the electrical device U. Figure 4a A side cross-sectional view schematically shows the filtration device F according to an aspect of the present disclosure.

[0125] According to Figure 3 and Figure 4a the illustrated embodiment, the filtration device F includes a filtration medium 30 that substantially corresponds to the filtration medium 30 shown in Figure 1 and Figure 1a According to Figure 3 and Figure 4a the illustrated embodiment, the filtration device F includes a clamping member 40 that substantially corresponds to the clamping member 40 shown in Figure 1 and Figure 1a The clamping member 40 is substantially corresponding to the clamping member 40 shown in

[0126] According to Figure 3 and Figure 4a the illustrated embodiment, the filtration device F includes an edge member 60 configured to at least partially surround the filtration medium 30. According to Figure 3 and Figure 4a the illustrated embodiment, the edge member 60 is configured to be arranged at the edge (i.e., the end side) of the filtration medium 30. According to Figure 3 and Figure 4a the illustrated embodiment, the edge member 60 has a frame structure.

[0127] According to an aspect of the present disclosure, the frame-shaped edge member 60 of the filtration device F has a certain length L2, a certain width W2, and a certain height H2. According to an aspect of the present disclosure, the frame-shaped edge member 60 of the filtration device F is configured to support and hold the filtration medium 30 together. According to an aspect of the present disclosure, the frame-shaped edge member 60 of the filtration device F is configured to accommodate the filtration medium 30. According to an aspect of the present disclosure, the filtration medium 30 is configured to be closely received within the frame-shaped edge member 60. According to an aspect of the present disclosure, the main extension direction of the width W2 of the edge member 60 and the main extension direction of the length L2 are substantially orthogonal to the height H2. Therefore, according to an aspect of the present disclosure, the filtration device F has a substantially planar main extension portion.

[0128] Figure 4b A schematic view shows, according to an aspect of the present disclosure, as Figure 3Side cross-sectional view of the electrical device U arranged within the air duct D. According to one aspect of the present disclosure, the electrical device U is configured to be fixedly arranged within the air duct D. The air duct D includes an air inlet A1 for introducing air to be purified. The air duct D includes an opening O1 and an inner compartment C for receiving the filter device F. The opening O1 and the inner compartment C for the filter device F are arranged downstream of the electrical device U located within the air duct D. The filter device F is shaped to fit the opening O1 and the inner compartment C.

[0129] The electrical device U includes an electrical device connector 50, which includes or is operably connected to the electrical conductive part of the electrical device U for making the electrical connection with the clamping member 40 of the filter device F.

[0130] The electrical device U can be any suitable electrical device. According to one aspect of the present disclosure, the electrical device U is an electrical device configured to operate in a manner of applying different potentials, wherein the different potentials are configured to be applied to different electrical conductive parts of the electrical device U to facilitate the air purification operation. According to one aspect of the present disclosure, the electrical device U is an electrical device U configured to operate in a manner of applying at least two different potentials, wherein one of the at least two potentials is configured to be applied to at least one electrical conductive part of the electrical device U, and the filter medium 30 can be electrically connected to the at least one electrical conductive part by means of the filter connection device including the clamping member 40, and the other of the at least two potentials is configured to be applied to another electrical conductive part of the electrical device U to facilitate the air purification. According to one aspect of the present disclosure, the electrical device U includes a power supply device for supplying power to provide the at least two potentials.

[0131] According to one aspect of the present disclosure, the electrical device U includes an ionization unit configured to form an ionizing volume (ionizing space) for charging suspended particles present in the air stream during the ionization operation, wherein the ionization unit includes at least one emission electrode configured to generate ions and includes at least one collection electrode. In the case of the electrical device U including such an ionization unit, the conductive material of the filter medium 30 is configured to be connected to the collection electrode via the clamping member 40, and the collection electrode is configured to be grounded or connected to another potential different from the potential of the at least one emission electrode to establish a required electric field and corona discharge together with the at least one emission electrode of the ionization unit, thereby forming an ionizing volume for charging suspended particles present in the air stream.

[0132] Figure 17 Schematically shown is an air purification device 100 according to one aspect of the present disclosure.

[0133] The air purification device 100 includes a filtration device F. The filtration device F can be any suitable filtration device, such as a filtration device F according to Figure 1 . Thus, the filtration device F includes a filter medium 30 having a conductive layer (such as a carbon layer). The filtration device F further includes a filter connection device including a conductive material. The filter connection device includes at least one clamping member 40 configured to conductively attach to a conductive portion of the filter medium 30.

[0134] The air purification device 100 includes an electrical device U. The electrical device U includes an ionization unit IU. According to one aspect of the present disclosure, the ionization unit IU is configured to form an ionization region for charging suspended particles present in an air flow during an ionization operation.

[0135] The ionization unit IU includes an emission electrode 10. According to this example, the emission electrode 10 includes a plurality of emission discharge protrusions 12. According to Figure 17 the embodiment schematically shown in Figure 17 , the emission electrode 10 has an elongated configuration and is provided in the form of an elongated member such as a rod. According to Figure 17 the embodiment schematically shown in

[0136] , the plurality of emission discharge protrusions 12 are configured to be distributed along the elongated emission electrode 10. According to Figure 17 the embodiment schematically shown in

[0137] According to Figure 17 the schematic example shown, one of the elongated collection electrodes 20 is arranged on one side at a distance from the elongated emission electrode 10 and is configured to extend substantially parallel to the elongated emission electrode 10, and the other of the elongated collection electrodes 20 is arranged on the other side at a distance from the elongated emission electrode 10 and is configured to extend substantially parallel to the elongated emission electrode 10.

[0138] The conductive layer (such as an activated carbon layer) of the filter medium 30 is configured to be connected to one of the collection electrodes 20 via the conductive filter connection means including the clamping member 40, and the collection electrode is grounded or connected to another potential different from the potential of the emission electrode 10, so as to establish a required electric field and corona discharge together with the emission electrode 10, thereby forming an ionization region for charging suspended particles present in the air flow. Therefore, the collection electrode 20 is configured to form an electrically conductive part of the electrical device U, and the filter medium 30 can be removably electrically connected to this electrically conductive part by means of the filter connection means.

[0139] The electrical device U of the air purification device 100 includes a power supply device P, which is configured to supply power to the emission electrode 10 and the collection electrode 20 via connectors C1, C2, so as to charge the emission electrode 10.

[0140] According to Figure 17 In the schematic example shown, the electrical device U of the air purification device 100 includes a first connector device C1 that connects the power supply device P to the emission electrode 10, and a second connector device C2 that connects the power supply device P to the collection electrode 20. According to one aspect of the present disclosure, the power supply device P includes a power operation unit P1.

[0141] The emission electrode 10 can be connected to a negative voltage, and the collection electrode 20 is grounded or connected to a positive voltage, or alternatively, the emission electrode 10 can be connected to a positive voltage, and the collection electrode 10 is grounded or connected to a negative voltage. According to a preferred embodiment, the emission electrode 10 is connected to a negative high voltage, and the collection electrode 20 is grounded.

[0142] Figure 17 The power source P in is schematically shown, and this power source can be configured in any suitable manner to facilitate the arrangement of the electronic device U in an air duct, for example, arranged in the air duct shown in Figure 3 the air duct shown.

[0143] Figure 17 The ionization unit IU is schematically shown in, which is only an example. The electrical device having an ionization unit can be provided with any suitable type of ionization unit.

[0144] Figure 3a and Figure 4c respectively schematically show Figure 3 and Figure 4a The filter device F in according to one aspect of the present disclosure is introduced into Figure 3 and Figure 4bPerspective view and side cross-sectional view when in the air duct D and electrically connected to the electrical device U in the air duct. The filter device F electrically connected to the electrical device U is configured to form an air purification device 100 for facilitating an air purification operation of purifying air. The air purification device 100 arranged in the air duct D is configured to form an air purification system S for facilitating an air purification operation of purifying air.

[0145] According to one aspect, the filter device F is configured to be removably introduced into the compartment C of the air duct D via the opening O1. The at least one clamping member 40 is configured to be attached to the filter medium 30 such that the clamping member 40 of the filter connector is aligned with and electrically connected to the electrical device connector 50 of the electrical device U fixedly arranged in the air duct.

[0146] According to one aspect, the filter device F has a substantially planar main extension, wherein the at least one clamping member 40 is configured to be attached to the filter medium 30 such that the filter device F can be guided and introduced into the compartment C of the air duct through the opening O1 downstream of the electrical device U arranged in the compartment C by moving the filter device F along its main extension direction D1 for electrical connection with the electrical device connector 50 of the electrical device U. According to one aspect of the present disclosure, the electrical device connector 50 has an elastic property such that when electrically connected to the clamping member 40, the electrical device connector moves closer to the clamping member 40 of the filter connector, for example, see 4c. Such an electrical device connector 50 is shown in, for example Figure 7b as shown. Such an electrical device connector 50 can be configured to be connected to the rod-shaped collecting electrode of the electrical device U including an ionization unit.

[0147] Furthermore, in a state where the filter device F is arranged in the compartment C and electrically connected to at least one electrically conductive part of the electrical device U via the clamping member 40, the filter device F can be removed from the compartment C along its main extension direction D2 through the opening O1 such that the at least one clamping member 40 of the filter device F is disconnected from at least one electrically conductive part of the electrical device U, thereby removing the filter device F from the compartment C.

[0148] For example Figure 4a the filter device F in, for example, moves along its main extension direction D1 towards the opening O1 of the air duct D as shown in Figure 4b for electrically connecting the clamping member 40 to the electrical device connector 50 of the electrical device U.

[0149] In Figure 4c an electrical device U including an ionization unit IU is shown in dashed lines. The ionization unit includes an emission electrode 10 having emission discharge protrusions 12 and a collection electrode 20 which also has discharge protrusions 22 here. The conductive layer of the filter medium 30 is configured to be electrically connected to the collection electrode via the conductive filter connection means including the clamping member 40, thereby forming an electrically conductive part of the electrical device U. The electrical device U can be any suitable electrical device. When the electrical device U includes an ionization unit (as exemplified in Figure 4c ), the ionization unit can be any type of ionization unit, for example, an ionization unit without discharge protrusions.

[0150] Figure 5 A perspective view of a filter device F according to an aspect of the present disclosure and an electrical device U arranged in an air duct is schematically shown. The filter device F is disconnected from the electrical device and has not been introduced into the air duct D.

[0151] Figure 6a Schematically shown is Figure 5 a side cross-sectional view of the filter device F in Figure 5 and Figure 6a The filter device F in Figure 3 and Figure 4a is substantially corresponding to the filter device F in

[0152] Figure 6b Schematically shown is Figure 5 a side cross-sectional view of the electrical device U arranged in the air duct D in Figure 5 and Figure 6b The electrical device U in Figure 3 and Figure 4b differs from the electrical device in Figure 5 and Figure 6b in that its shape and position in the air duct D are different. Figure 5 and Figure 6b The electrical device U in Figure 5 and Figure 6b is configured to be fixedly arranged in the space in the air duct D, and this space forms an extension of the compartment C for accommodating the filter device F. Figure 5 and Figure 6b The air duct in Figure 3 and Figures 4b to 4cThe air duct therein is different in that there is additional space for accommodating the electrical device U.

[0153] Figure 5a and Figure 6c schematically show, respectively, according to one aspect of the present disclosure Figure 5 and Figure 6a when the filter device F therein is introduced into Figure 5 and Figure 6b the air duct D therein and electrically connected to the electrical device connector 50 of the electrical device U in the air duct, a perspective view and a side cross-sectional view.

[0154] For example Figure 6a the filter device F therein moves along its main extension direction D1 towards the opening O1 as shown in Figure 6b the air duct D for electrically connecting the clamping member 40 to the electrical device connector 50 of the electrical device U.

[0155] Figure 7 schematically shows a perspective view of the filter device F and the electrical device connector 50 of the electrical device (not shown) disconnected from the filter device F according to one aspect of the present disclosure; and Figure 7a schematically shows, according to one aspect of the present disclosure Figure 7 a perspective view of a part of the filter device therein, wherein the clamping member 40 of the filter connector device is attached to the filter medium 30 of the filter device F. Figure 9a schematically shows, according to one aspect of the present disclosure Figure 7 a side cross-sectional view of a part of the filter device F therein. Figure 7b and Figure 9b schematically show, respectively, according to one aspect of the present disclosure Figure 7 a perspective view and a side cross-sectional view of the electrical device connector 50 therein.

[0156] Figure 7 , Figure 7a and Figure 9a the filter device F in Figure 3a and Figure 4a is substantially corresponding to the filter device shown in

[0157] According to one aspect of the present disclosure, the electrical device connector 50 is configured as an integral part of the electrical device so as to make the electrical connection with the clamping member 40 of the filter device F. According to one aspect of the present disclosure, the electrical device connector 50 is configured to be operably connected to the electrically conductive part of the electrical device so as to make the electrical connection with the clamping member 40 of the filter device.

[0158] According to one aspect of the present disclosure, the electrical device connector 50 has an elastic property such that when the electrical device connector is electrically connected to the filter connection device including the clamping member 40, it approaches the clamping member 40. According to one aspect of the present disclosure, the electrical device connector 50 has an elastic property so that when the filter device F is arranged to be connected to the electrical device within the space of the air duct, it approaches the clamping member 40 of the filter device F.

[0159] According to one aspect of the present disclosure, the electrical device connector 50 includes a conductive contact portion 52 having a contact surface 52a configured for electrical connection to the clamping member 40 of the filter device F. According to one aspect of the present disclosure, the electrical device connector 50 includes a conductive contact portion 52 having a contact surface 52a configured for electrical connection to the contact surface 42a of the conductive portion 42 of the clamping member 40 of the filter device F. The conductive contact portion 52 has a blade-like configuration having an elastic property such that the blade-like configuration approaches the clamping member 40 when electrically connected to the clamping member 40. The conductive contact portion 52 has an elongated extension configured to extend transversely to the longitudinal extension of the clamping member 40 when electrically connected to the clamping member 40.

[0160] According to one aspect of the present disclosure, the electrical device connector 50 includes a conductive connection portion 54 configured for electrical connection to an electrical portion of the electrical device for air purification operation. The conductive connection portion 54 may be configured to connect to a rod-shaped collecting electrode of an electrical device U including an ionization unit. The conductive connection portion 54 is configured to extend in a direction away from the inflow side 30a of the filter medium 30 when the conductive contact portion 52 of the electrical device connector 50 is electrically connected to the conductive portion 42 of the clamping member 40.

[0161] According to one aspect of the present disclosure, the electrical device connector 50 includes an attachment portion 56 configured for attaching the electrical device connector 50 to a part of the electrical device. According to one aspect, the attachment portion 56 is an extension of the conductive contact portion 52 and is configured to extend at an angle relative to the conductive contact portion 52 to give the electrical device connector 50 the elastic property. The attachment portion 56 is configured to extend at an angle away from the inflow side 30a of the filter medium 30 from the conductive contact portion 52 when the electrical device connector is connected to the clamping member 40 on the filter medium 30. According to one aspect, the attachment portion 56 has a blade-like configuration.

[0162] According to one aspect of the present disclosure, the electrical device connector 50 has a blade-shaped structure strip and conductive properties. According to one aspect of the present disclosure, the attachment portion 56 of the blade-shaped electrical device connector 50 transitions to the conductive contact portion 52, and further causes the conductive contact portion to transition into the conductive connection portion 54 in the following manner: when the conductive contact portion is connected to the clamping member 40 on the inflow side 30a of the filter medium 30, the end portion of the conductive connection portion 54 is rotated upward away from the inflow side, then rotated back above the conductive contact portion 52, and then further rotated upward away from the inflow side 30a.

[0163] For example Figure 9a the filter device F in is moved along its main extension direction D1 towards the electrical device connector 50 of the electrical device (not shown) as Figure 9b shown.

[0164] Figure 8 Schematically shows a perspective view of a filter device F according to one aspect of the present disclosure Figure 7 and an electrical device connector 50 electrically connected to the filter device; Figure 8a and Figure 9c respectively schematically show a perspective view and a side cross-sectional view of a part of a filter device F according to one aspect of the present disclosure Figure 8 in which the clamping member 40 of the filter device is electrically connected to the electrical device connector 50. Figure 7a

[0165] Figure 10 Figure 10a Schematically shows a side view of a filter device F and an electrical device connector 50 of an electrical device (not shown) disconnected from the filter device F according to one aspect of the present disclosure; and Figure 10 Figure 10b Figure 10

[0166] Figure 10 Figure 10a Figure 1 Figure 1a

[0167] ​​​​​​​​​According to one aspect of the present disclosure, the electrical device connector 50 is configured as an integral part of the electrical device so as to make the electrical connection with the clamping member 40 of the filtering device F. According to an alternative aspect of the present invention, the electrical device connector 50 is configured to be operably connected to the electrically conductive part of the electrical device so as to make the electrical connection with the clamping member 40 of the filtering device.

[0168] According to one aspect of the present disclosure, the clamping member 40 has an elastic property such that when arranged to be connected to the electrical device, the clamping member approaches the electrical device connector 50 of the electrical device. According to one aspect of the present disclosure, the clamping member 40 has an elastic property so that when the filtering device F is arranged to be connected to the electrical device within the space of the air duct, the clamping member approaches the electrical device connector 50.

[0169] According to one aspect of the present disclosure, the clamping member 40 includes a conductive contact portion 42 having a contact surface 42a, and the contact surface is configured for conductive connection to the electrical device connector 50 of the electrical device. According to one aspect of the present disclosure, the clamping member 40 includes a conductive contact portion 42 having an elastic property such that when arranged to be connected to the electrical device, the clamping member approaches the electrical device connector 50 of the electrical device.

[0170] According to one aspect of the present disclosure, the clamping member 40 includes a grasping portion 44, and the grasping portion is configured for attaching and electrically connecting the clamping member 40 to the filter medium 30. According to one aspect, Figure 10 、 Figure 10a the grasping portion 44 of the clamping member 40 in Figure 2a 、 Figures 2d to 2e may substantially correspond to the grasping member of the clamping member in Figure 10 、 Figure 10a The clamping member 40 in Figure 2a 、 Figures 2d to 2e is different from the clamping member in Figure 10 、 Figure 10a in that the clamping member has the elastic property such that the clamping member can approach the electrical device connector 50. Figure 2a 、 Figures 2d to 2e The clamping member 40 in

[0171] According to one aspect of the present disclosure, the clamping member 40 includes an attachment portion 46 configured to be connected to the filter medium 30, here to the inflow peak of the fold 32 of the filter medium 30. According to one aspect of the present disclosure, from the perspective of shape, the attachment portion 46 substantially corresponds to Figure 2a , Figures 2d to 2e the conductive contact portion of the clamping member in. According to one aspect, the attachment portion 46 is configured to transition to the grasping portion 44. According to one aspect, the grasping portion 44 is configured to be conductively connected to one or more conductive portions X2 of the filter medium 30, here the conductive layer X2, via pins (see, for example, Figure 10a ).

[0172] According to one aspect of the present disclosure, the conductive contact portion 42 is attached to the attachment portion 46 to give the conductive contact portion 42 the elastic property, such that when the conductive contact portion is arranged to be connected to the electrical device, it moves closer to the electrical device connector 50 of the electrical device. According to one aspect, the conductive contact portion 42 is attached to the attachment portion 46 such that when the conductive contact portion 42 of the clamping member is attached to the filter medium 30, the conductive contact portion 42 is configured to extend in a direction away from the inflow side 30a of the filter medium 30 and away from the attachment portion 46.

[0173] According to one aspect of the present disclosure, the electrical device connector 50 includes a conductive contact portion 52 having a contact surface 52a configured for conductive connection to the clamping member 40 of the filter device F. According to one aspect of the present disclosure, the electrical device connector 50 includes a conductive contact portion 52 having a contact surface 52a configured for conductive connection to the contact surface 42a of the conductive portion 42 of the clamping member 40 of the filter device F.

[0174] According to one aspect of the present disclosure, the electrical device connector 50 includes an attachment portion 54 for attaching the electrical device connector 50 to an electrical device (not shown).

[0175] Figure 10a the filter device F in Figure 10b moves along its main extension direction D1 towards the electrical device connector 50 of the electrical device (not shown) as shown.

[0176] Figure 11 Schematically shows a side view of Figure 10 the filter device F according to one aspect of the present disclosure and the electrical device connector 50 electrically connected to the filter device F. Figure 11aSchematically shows according to one aspect of the present disclosure Figure 11 A side view of a part of the filtration device F in Figure 10a wherein the clamping member 40 of the filtration device F as shown in

[0177] Figure 12 is electrically connected to the electrical device connector 50. Figure 12a Schematically shows a side view of the filtration device F and the electrical device connector 50 of an electrical device (not shown) disconnected from the filtration device F according to one aspect of the present disclosure; and Figure 12 Schematically shows a side view of a part of the filtration device F in Figure 12b wherein the clamping member 40 of the filter connection device is attached to the filter medium 30 of the filtration device F. Figure 12 Schematically shows a side view of the electrical device connector 50 in

[0178] Figure 12 and Figure 12a the filtration device F in Figure 1 and Figure 1a is substantially corresponding to the filtration device shown in

[0179] According to one aspect, the electrical device connector 50 is substantially corresponding to Figure 10b the electrical device connector in

[0180] According to one aspect of the present disclosure, the filter medium 30 has a deformation property such that when the filtration device F moves towards the electrical device so that a connection is established between the clamping member 40 attached to the filter medium 30 and the electrical device connector 50, the filter medium 30 to which the clamping member 40 is attached deforms, thereby achieving the conductive connection between the clamping member 40 and the electrical device connector 50.

[0181] According to one aspect of the present disclosure, the filter medium 30 has an elastic deformation property such that when the filtration device F is arranged to be connected to the electrical device within the space of the air duct, the filter medium 30 moves closer to the electrical device connector 50 of the electrical device, thereby causing the clamping member 40 to move closer to the electrical device connector 50.

[0182] Therefore, according to one aspect of the present disclosure, the filter medium 30 has an elastic property such that when the filtration device F is arranged to be connected to the electrical device within the space of the air duct, the filter medium 30 (i.e., the pleats 32 of the filter medium 30) to which the clamping member 40 is conductively attached moves closer to the electrical device connector 50 of the electrical device.

[0183] Figure 12a The filter device F in is moved along its main extension direction D1 towards the electrical device connector 50 of the electrical device (not shown) as Figure 12b shown.

[0184] Figure 13 Schematically shows a side view of the filter device F and the electrical device connector 50 electrically connected to the filter device F according to one aspect of the present disclosure. Figure 12 in. Figure 13a Schematically shows a side view of a part of the filter device F according to one aspect of the present disclosure. Figure 13 in, wherein the clamping member 40 of the filter device F as Figure 12a shown is electrically connected to Figure 12b the electrical device connector 50 in.

[0185] Figure 14 Schematically shows a side view of the filter device F according to one aspect of the present disclosure; and Figure 14a Schematically shows a side view of a part of the filter device according to one aspect of the present disclosure. Figure 14 in, wherein the clamping member 40 of the filter connection device is attached to the filter medium 30 of the filter device F.

[0186] Figure 14 and Figure 14a the filter medium 30 of the filter device F in basically corresponds to Figure 1 and Figure 1a the filter medium shown.

[0187] Figure 14 and Figure 14a the clamping member 40 in basically corresponds to Figure 10 and Figure the clamping member in.

[0188] ​ and ​ the filter device F in and ​ and ​ the filter device F in are mainly different in that the clamping member 40 is attached to the outflow side 30b of the filter medium 30. ​ and ​ the clamping member 40 in is attached to be connected to the outflow peaks of the folds 32 of the filter medium 30 on the outflow side 30b.

[0189] ​ Schematically shows a perspective view of the filter device F according to one aspect of the present disclosure; ​Schematically shows according to one aspect of the present disclosure ​ a plan view of the filtration device F in ​ Schematically shows according to one aspect of the present disclosure ​ a side cross-sectional view of the filtration device F in

[0190] ​ 、 ​ The filtration device F in ​ differs from the filtration device F in, for example, ​ in that the filter medium 30 is a flat filter medium 30 instead of being formed into pleats as in ​ 、 ​ Therefore, the filter medium 30 of the filtration device F in

[0191] has a flat configuration. The filter medium 30 has an inflow side 30a and an outflow side 30b opposite to the inflow side. The inflow side is configured to face the air flow A during the air purification operation, and the purified air passing through the filter medium 30 is intended to flow out from the outflow side.

[0192] According to one aspect of the present disclosure, the filter medium 30 has a certain length L1, a certain width W1, and a certain height H1. According to one aspect, the height H1 corresponds to the distance between the inflow side 30a and the outflow side 30b. According to one aspect of the present disclosure, the main extension direction of the width W1 and the main extension direction of the length L1 are substantially orthogonal to the height H1. Therefore, according to one aspect of the present disclosure, the filter medium 30 of the filtration device F has a substantially planar main extension portion.

[0192] According to one aspect of the present disclosure, the filter medium 30 has a generally rectangular configuration, and its peripheral edges form end sides opposite to each other.

[0193] The filter medium 30 according to the present disclosure includes a conductive material X2, as ​ schematically shown in. According to one aspect of the present disclosure, the conductive material can constitute an integral part of the filter medium 30. According to ​ the embodiment in, the conductive material X2 is a conductive layer X2, such as a carbon filtration layer or the like.

[0194] According to ​ the embodiment in, the filter medium 30 includes a first filter layer X1 and a second layer X2, and the second layer X2 is a conductive layer X2 formed by the conductive material X2 of the filter medium 30. According to one aspect of the present disclosure, the first filter layer X1 is a particulate filter layer configured to be able to filter particles in the air flow during the air purification operation. According to ​In an embodiment, the filter medium 30 includes a third filter layer X3, wherein the second filter layer X2, which serves as the conductive layer X2, is configured to be disposed between the first filter layer X1 and the third filter layer X3.

[0195] The filter device F further includes a filter connection device, which includes a clamping member 40 configured to be conductively attached to a conductive portion of the filter medium 30. The clamping member 40 is configured to be conductively attached to the conductive layer X2. According to one aspect of the present disclosure, the clamping member 40 is configured to be conductively attached to the conductive layer X2 via the first filter layer X1 and / or the third filter layer X3.

[0196] ​ A perspective view of the clamping member 40 according to one aspect of the present disclosure is schematically shown. The clamping member 40 includes a conductive contact portion 42 having a contact surface 42a configured for conductive connection to an electrically conductive portion of an electrical device. The conductive contact portion 42 of the clamping member 40 has an attachment side 42b configured to face the filter medium 30 when the clamping member is attached to the filter medium 30. The attachment side 42b is opposite to the contact surface 42a. According to one aspect of the present disclosure, the clamping member has a longitudinal extension having two end sides 40a, 40b opposite to each other.

[0197] According to one aspect, the filter device F is configured to be removably introduced into the compartment of the air duct (not shown). The clamping member 40 is configured to be attached to the filter medium 30 such that the clamping member 40 of the filter connection device is aligned and electrically connected to a conductive portion of an electrical device fixedly arranged within the air duct.

[0198] According to one aspect of the present disclosure, the at least one clamping member 40 includes a gripping portion 44 configured to attach and conductively connect the clamping member 40 to the filter medium 30.

[0199] According to one aspect of the present disclosure, the gripping portion 44 of the at least one clamping member 40 includes one or more conductive pins 44a configured to be conductively connected to a conductive portion of the filter medium 30 when attached to the filter medium 30. In ​In the illustrated embodiment, the grasping portion 44 includes a set of pins 44a, here four pins 44a, two of which project from one end side 40a and the other two pins 44a project from the other end side 44b. According to one aspect of the present disclosure, the conductive pins 44a are configured to project from the end sides 40a, 40b of the clamping member 40 so as to be effectively conductively connected to and through the conductive portion, here the conductive layer X2, of the filter medium 30 when the clamping member 40 is attached to the filter medium 30.

[0200] According to one aspect of the present disclosure, the grasping portion 44 of the at least one clamping member 40 includes a holding member 44a1 configured to hold the at least one clamping member 40 when the clamping member 40 is attached to the filter medium 30.

[0201] According to one aspect of the present disclosure, the conductive pins 44a constitute or include the holding member 44a1. According to one aspect of the present disclosure, as ​ shown, the conductive pins 44a include a holding member 44a1, wherein the holding member 44a1 of the conductive pin is constituted by a barb 44a1 on one of the pins 44a. According to one aspect of the present disclosure, as ​ shown, the conductive pins 44a are configured such that when the clamping member 40 is attached to the filter medium 30, the conductive pins pass through the filter medium 30 from the inflow side 30a and then extend through the outflow side 30b, so that the holding member 44a1 (i.e., the barb) holds the clamping member 40 at the filter medium 30.

[0202] Although various variants of the filter device, filter medium, and clamping member have been described in detail above, their main purposes and general functions are basically the same. Therefore, the same reference numerals are used for, for example, the filter medium, clamping member, etc. in all the several views.

[0203] For purposes of illustration and description, the above description of the preferred embodiments of the present invention has been provided. This description is not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible for those skilled in the art. These embodiments are selected and described in order to better explain the principles of the invention and its practical applications, so that other skilled persons in the art can understand the various embodiments of the invention and the various modifications suitable for the intended specific purposes.

Claims

1. A filtering device (F) for filtering an air flow (A), the filtering device (F) comprising: a filter medium (30) comprising an electrically conductive material; and a filter connection device comprising an electrically conductive material, the filter connection device including at least one clamping member (40), the at least one clamping member being configured to conductively attach to an electrically conductive portion of the filter medium (30) such that when the at least one clamping member (40) is attached to the filter medium (30), the filter medium (30) can be removably electrically connected to at least one electrically conductive portion of an electrical device (U) via the filter connection device, thereby performing an air purification operation upon electrical connection.

2. The filtering device according to claim 1, wherein The filter medium (30) has an inlet side (30a) and an outlet side (30b) opposite the inlet side, the inlet side being configured to face the air flow (A) during the air purification operation.

3. The filtering device according to claim 1 or 2, wherein The filtering device (F) is configured to be removably introduced via an opening into a compartment of an air duct, wherein the at least one clamping member (40) is configured to attach to the filter medium (30) such that the filter connection device is aligned with and electrically connected to the at least one electrically conductive portion of the electrical device (U) fixedly arranged within the air duct.

4. The filtering device according to claim 3, wherein, The filtering device (F) has a substantially planar main extension, wherein the at least one clamping member (40) is configured to attach to the filter medium (30) such that the filtering device (F) can be introduced into the compartment of the air duct by moving the filtering device (F) in the main extension direction, thereby enabling the electrical connection with the at least one electrically conductive portion of the electrical device (U), and the filtering device can be removed from the compartment by moving the filtering device (F) in the main extension direction, thereby disconnecting the at least one clamping member (40) of the filtering device (F) from the at least one electrically conductive portion of the electrical device (U).

5. The filtering device according to any one of claims 1 to 4, wherein The at least one clamping member (40) includes a conductive contact portion (42) having a contact surface (42a), the contact surface being configured for conductive connection to the electrically conductive portion of the electrical device (U).

6. The filtering device according to claims 1 to 5, wherein, The at least one clamping member (40) includes a gripping portion (44), the gripping portion being configured for attaching and conductively connecting the at least one clamping member (40) to the filter medium (30).

7. The filtering device according to any one of claims 1 to 6, wherein The at least one clamping member (40) has an elastic property such that when arranged to be connected to the electrical device (U), the at least one clamping member moves closer to the at least one electrically conductive portion of the electrical device (U).

8. The filtering device according to claim 6 or 7, wherein, The gripping portion (44) of the at least one clamping member (40) includes one or more conductive pins configured to be conductively connected to the electrically conductive portion of the filter medium (30) when attached to the filter medium (30).

9. The filtering device according to any one of claims 1 to 8, wherein, The filter medium (30) comprises at least two layers, said at least two layers including a first filter layer and a second layer, said second layer being a conductive layer formed from the conductive material of the filter medium (30), and said at least one clamping member (40) being configured to be conductively attached to said conductive layer.

10. The filtering device according to any one of claims 1 to 9, wherein, The filter medium (30) has a pleated configuration with a set of pleats (32), wherein said at least one clamping member (40) is configured to be attached to one or more of said set of pleats (32) of the filter medium (30).

11. The filtering device according to claim 10, wherein, At least one of said at least one clamping member (40) is configured to be attached on the inlet side (30a) of the filter medium (30).

12. The filtering device according to any one of claims 1 to 10, wherein, The filter device (F) includes an edge member (60) configured to at least partially surround the filter medium (30).

13. The filtering device according to any one of claims 1 to 11, wherein, The electrical device is configured to operate in a manner of applying different potentials, wherein one of said different potentials is configured to be applied to at least one electrically conductive part of the electrical device (U), and another of said different potentials, which is different from said one potential, is configured to be applied to another electrically conductive part of at least one electrically conductive part of the electrical device (U).

14. An electrical device (U) comprising at least one electrically conductive part for electrically connecting to a filter connection device of the filter device (F) according to any one of claims 1 to 13 for air purification operation.

15. The electrical device according to claim 14, wherein, The electrical device (U) includes an electrical device connector (50), said electrical device connector including or operatively connected to the electrically conductive part of the electrical device (U) for making said electrical connection with at least one clamping member (40) of the filter connection device.

16. The electrical device according to claim 15, wherein, The electrical device connector (50) has an elastic property such that when electrically connected to the filter connection device, the electrical device connector moves closer to at least one clamping member (40) of the filter connection device.

17. An air purification device (100) for separating suspended particles from an air flow in an air duct (D), said air purification device (100) including the filter device according to any one of claims 1 to 13 and the electrical device (U) according to any one of claims 14 to 16.

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