Abstract: An electrostatic air filter system, in particular for a motor vehicle is provided, which has a flow channel for an air flow, an ionizer for ionizing particles in the air flow that contains at least one discharge electrode and at least one counter electrode in the flow channel, a filter element for filtering particles out of the air flow that is downstream of the ionizer in the flow channel and contains a multilayer filter with at least one particle filter layer and at least one electrically conductive layer. The filtration capacity of the air filter system can be improved, in particular over time, in that the at least one conductive layer is connected to the at least one counter electrode by a resistor.

Abstract: An air filter for an air filter assembly in an air conditioner is provided, in particular for filtering out particles, preferably pollutants, from air. The air filter contains a filter element with an electrically conductive layer. The air filter also has a housing that partially encompasses a housing interior into which the filter element is inserted. The air filter also has a terminal on the housing that can be contacted from outside the housing interior, which is made of an electrically conductive material and is connected to the conductive layer of the filter element.

Abstract: A filter device for filtering a fluid, in particular air is provided, which has a filter element for filtering particles out of the fluid in the flow path. An filtering effect is obtained over a longer service with a simplified implementation in that the filter device has a cover for inserting and/or replacing the filter element, wherein an electrical conductor is attached to the cover, which comes in contact with the filter element in the closed state . filter system has such a filter device and an ionizer. A motor vehicle with such a filter device is provided.

Abstract: An ionizer for an electrostatic air filter system, preferably in a motor vehicle is provider. The ionizer has a generator with a first terminal and second terminal, and which is configured to generate a high voltage between the first terminal and second terminal, at least one discharge electrode connected to the first terminal, and at least one counter electrode at a distance to the discharge electrode, which is connected to the ground. An operating safety of the ionoizer can be improved if the counter electrode is connected to the second terminal, and if the discharge electrode and counter electrode have a high-impedance connection to the ground.

Abstract: An air filter unit may include at least one ionization unit and at least one filter medium arranged downstream of the ionization unit. The ionization unit may include at least one corona discharge electrode, at least one counter-electrode, and at least one voltage source. The at least one filter medium may include at least one electret layer, at least one mechanically separating layer, and at least one electrically conductive layer adjoining the mechanically separating layer. In an airflow direction extending from an inflow side toward an outflow side, the electret layer, the mechanically separating layer, and the electrically conductive layer may be arranged one after another in this order.

Abstract: An air filter unit is provided and contains, at least one ionizer, and at least one filter medium, wherein the at least one ionizer contains at least one discharge electrode, at least one counter-electrode, and at least one voltage source, and wherein the at least one filter medium is downstream of the ionizer, and contains, starting from the upstream side, at least one electret layer, at least one mechanically filtering layer, at least one inner electret layer, and at least one electrically conductive layer. The use of such an air filter unit in a motor vehicle is also provided.

Abstract: A heating, ventilation, and air conditioning system (HVAC system) for a motor vehicle is provided, which has an ionizer for generating a corona discharge field, which contains at least one polarized discharge electrode and at least one counter electrode with the opposite polarity of the discharge electrode, a particle filter for removing particles from an air flow, and a flow path that defines a flow direction for air leading to a vehicle interior and conducts the air through the ionizer and the particle filter, wherein the ionizer is upstream of the particle filter in the flow path. The ionization effect can be improved when the discharge electrodes have numerous needles that point in the flow direction for the air, or counter to the flow direction for the air, and when the discharge electrodes and dedicated counter electrodes are spaced apart in a direction transverse to the flow direction for the air.

Abstract: An air filtering device through which a flow path for air passes is provided. It contains an ionizer in the flow path and an electrostatically charged filter downstream of the ionizer in the flow path, such that air can flow through the ionizer and filter. The ionizer also contains an electrode for generating a corona discharge that can be electrically connected to a high voltage source for the air filtering device, a counter electrode dedicated to the electrode, and an electrically conductive grid element upstream of the ionizer in the flow path. Substantial to the invention is that the counter electrode is electrically connected to an electrically conductive, flat, filtering layer in the filter. A vehicle air conditioner that contains at least one such air filtering device is provided.

Abstract: A heating, ventilation, and air conditioning system (HVAC system) for a motor vehicle is provided, which has an ionizer for generating a corona discharge field, which contains at least one polarized discharge electrode and at least one counter electrode with the opposite polarity of the discharge electrode, a particle filter for removing particles from an air flow, and a flow path that defines a flow direction for air leading to a vehicle interior (29) and conducts the air through the ionizer and the particle filter, wherein the ionizer is upstream of the particle filter in the flow path. The service life of the particle filter can be increased with a multilayered particle filter that contains at least one dielectric layer and at least one electrically conductive layer, and the HVAC system has an electrical connection with which the conductive layer is connected to a counter-potential that has the opposite polarity to that of the discharge electrodes.

Abstract: An air filter, through which a flow path for an air flow passes is provided, wherein the air filter contains an ionizer in the flow path for ionizing the air flow, in particular for ionizing the particles therein, and an electrostatically charged filter element downstream of the ionizer in the flow path for filtering the air flow, such that the air flow can pass through the ionizer and the filter element, wherein the ionizer contains an electrode that can be connected to a high voltage source for the air filter to generate a corona discharge in the air flow, and a counter electrode dedicated to the at least one electrode. Essential to the invention is that the at least one counter electrode is electrically connected to an electrically conductive filter layer in the filter element. A vehicle air conditioner that is equipped with at least one such air filter is provided.

Abstract: A filtering system for air is provided, which contains a filter and an electrode assembly upstream of the filter, which has an electrode and a counter electrode in an ionizer, between which there is a voltage for generating a corona discharge when in operation. A better and longer filtering effect, as well as a simplified implementation is obtained in that the counter electrode is connected to the filter by an electric line, in which a Z-diode is placed. An air conditioner and a vehicle that has such a filtering system is provided.

Abstract: A filtering system for filtering air is provided, which contains a filter for filtering particles out of the air and an ionizer that contains at least one electrode assembly upstream of the filter. An improved and longer filtering effect is obtained in that at least one of the electrode assemblies generates a negative corona discharge in a first operating mode, and at least one of the electrode assemblies generates a positive corona discharge in a second operating mode. An air conditioner and a vehicle that has such a filtering system is provided.

Abstract: A method for detecting a functional state of an ionizer in an air filtering system is provided, in particular for a motor vehicle, in which a measurement apparatus determines the amperage at a discharge electrode in the ionizer at an initial point in time t0, and sends this to a computer, the measurement apparatus measures at least one other parameter at the time t0 and sends this to the computer, the measurement apparatus measures the amperage at the discharge electrode and the at least one other parameter at a subsequent time t1 and sends the results to the computer, the computer obtains at least one comparison value from the measurement values detected by the measurement apparatus at the initial time t0 and the subsequent time t1 and compares this with a reference value, the computer generates a signal and/or takes appropriate measures if the comparison value differs from the reference value by a predefined value. A lasting filtering effect is obtained therewith, even with worn filters.

Abstract: An air filtering device for an air conditioner, in particular for filtering out particles, preferably pollutants, from air is provided. The air filtering device comprises a flow path through which air flows along a flow direction, an ionizer for generating ions in the flow path, and grid structure made of an electrically conductive material, that is upstream of the ionizer in the flow path in the flow direction, which forms a first electrode. A filter is downstream of the ionizer in the flow path in the flow direction which has a layer that forms a second electrode. The air filtering device also comprises a high voltage power source that has an electric pole and an electric counter-pole for generating a high voltage between the pole and the counter pole. The pole is electrically connected to the ionizer. The counter-pole is electrically connected to the first and second electrodes.

Abstract: A filtering system for filtering air is provided, which contains a filter and an electrode assembly downstream of the filter that contains an electrode and a counter electrode for an ionizer, between which there is a voltage for generating a corona discharge when in operation. An improved and lasting filtering effect is obtained in that the counter electrode is connected electrically to the filter in the reactivation mode. An air conditioner and a vehicle that has such a filtering system.

Abstract: An air filtering device for an air conditioner, in particular for filtering out particles, preferably pollutants, from air is provided. The air filtering device comprises a flow path through which air flows along a flow direction, an ionizer for generating ions in the flow path, and grid structure made of an electrically conductive material, that is upstream of the ionizer in the flow path in the flow direction, which forms a first electrode. A filter is downstream of the ionizer in the flow path in the flow direction which has a layer that forms a second electrode. The air filtering device also comprises a high voltage power source that has an electric pole and an electric counter-pole for generating a high voltage between the pole and the counter pole. The pole is electrically connected to the ionizer, or its discharge electrode, and the counter-pole is electrically connected to the first and second electrodes.

Abstract: A fragrancing device is disclosed. The fragrancing device includes a housing having an installation space and a longitudinal housing axis at which a carrier is arranged with contact. The carrier is provided separately with respect to the housing and includes a cover part that covers an installation space opening of the installation space. A carrier part having at least one fragrance cartridge receptacle for receiving a fragrance cartridge is provided. A guide stop is disposed axially in a direction of the housing axis between the carrier and the housing for guiding the carrier as part of a plug-in movement relative to the housing along the housing axis. The guide stop includes a guide pin and a guide pin receptacle.

Abstract: A fragrancing system may include at least one cartridge for storing a fragrance and at least one closing mechanism. The cartridge may have a cartridge opening. The closing mechanism may include a flap, a shaft, a lever, and a pin. The flap may be displacable via the shaft to a closed position, in which the flap closes the cartridge opening, and an open position, in which the flap frees the cartridge opening. The fragrancing system may further include an actuating mechanism, which may have a disc rotatable via an actuator. A cam plate structure may project axially from the disc. The pin may be arranged on a radially outward facing outer side of the cam plate structure when the flap is in the closed position and may be engaged with a recess of the cam plate structure when the flap is in the open position.

Abstract: A ventilation device may include a first air treatment device and an ionizer. The ionizer may include an electrode. A counter-electrode of the ionizer may be electrically conductively connected to the first air treatment device.

Abstract: An air scenting device for introducing at least one fragrance into a vehicle interior of a motor vehicle is disclosed. The air scenting device includes at least one fragrance cartridge arranged in a housing interior of a housing. An adjustment mechanism is provided for adjusting at least one flap closure between an open position, where the flap closure releases at least one of an inlet opening and an outlet opening of a cartridge housing, and a closed position, where the flap closure closes the at least one of the inlet opening and the outlet opening. A fragrance inlet is disposed on the housing for introducing air to be admixed with fragrance, and a fragrance outlet is disposed on the housing for discharging the air admixed with fragrance.