CN116766888A

CN116766888A - System for ventilation device

Info

Publication number: CN116766888A
Application number: CN202310249318.2A
Authority: CN
Inventors: 丹尼尔·埃贝勒; 马库斯·迈克尔
Original assignee: Mahle International GmbH
Current assignee: Mahle International GmbH
Priority date: 2022-03-17
Filing date: 2023-03-15
Publication date: 2023-09-19
Also published as: DE102022202649A1

Abstract

The invention relates to a system (1) for a ventilation device (100), in particular a system (1) for a ventilation device of a motor vehicle (200), having a channel (2) in which an air filter (4) and an ionizer (8) are arranged. The efficiency improvement in filtering air is achieved by: the ionizer (8) extends along the flow path (3) of the air and is arranged in a sub-section (10) of the channel (2) extending transversely to the flow path (3) in the relevant ionizer section (7) such that the remaining section (11) of the ionizer section (7) extending transversely to the flow path (3) is free of ionizers (8). The invention also relates to a ventilation device (100) having such a system (1) and to a motor vehicle (200) having such a ventilation device (100).

Description

System for ventilation device

Technical Field

The present invention relates to a system having an air filter and an ionizer disposed in a channel of the system. The invention also relates to a ventilation device with such a system and to a motor vehicle with such a ventilation device.

Background

Air filters are commonly used to filter particulates, noxious substances, and odors from the air. Such air filters are generally designed to filter the respective components from the air. Air filters for filtering particles from air generally have a correspondingly designed filter medium. The filtration of particles from the air is usually carried out mechanically (i.e. in particular by screening out the particles from the air) while flowing through the air filter.

In particular in the case of smaller particles (e.g. fine dust), pure mechanical separation in the air filter is not sufficient. To increase the separation of such particles, it is known to: the particles are ionized before they flow through the air filter. The corresponding system thus has an ionizer and an air filter.

Such an ionizer or system is known, for example, from EP 3,056,364 A1, US 2021/0021107 A1 and WO 2020/263171 A1.

Disclosure of Invention

The invention aims at: an improved or at least different embodiment is proposed for a system of the above-mentioned type, for a ventilation device with such a system and for a motor vehicle with such a ventilation device, which in particular obviates the drawbacks from the prior art. The invention is aimed in particular at: improved or alternative embodiments are proposed for systems, ventilation devices and motor vehicles, which are characterized by an improved efficiency in the filtration of air.

According to the invention, this object is achieved by the subject matter of the independent claims. Advantageous embodiments are the subject matter of the dependent claims.

Accordingly, the present invention is based on the following general idea: instead of the usual practice to date, an ionizer for ionizing air is not provided in the entire air flow, but only in a part of the cross section that can flow through and along the flow path. Thus, the flow resistance of the air generated by the ionizer is reduced and the path along which the field generated by the ionizer interacts with the air or particles in the air is prolonged. As a result, ionization of the particles is improved, while the flow resistance is reduced, so that the efficiency in filtering air is improved.

According to the inventive concept, the system has an ionizer and an air filter. Furthermore, the system has a channel through which the flow path of the air is guided, such that during operation the air flows along the flow path. An air filter and an ionizer are disposed in the channel. The flow path leads through an air filter that filters particles from the air during operation. The ionizer is arranged in a relevant section of the channel (hereinafter also referred to as ionizer section). The ionizer has at least one electrode by means of which the ionizer generates an electric field during operation to ionize air, in particular particles. The ionizer extends along the flow path and is arranged in a sub-section of the ionizer section extending transversely to the flow path in a cross section of the ionizer section that is permeable, so that the remaining sections of the ionizer section extending transversely to the flow path are free of ionizers.

It should be understood that the "channel" can also be constructed in multiple pieces. That is, a "channel" is also understood as a channel system, through which the flow path is guided.

The arrangement of the ionizer in a cross section through which it can flow means: an ionizer is disposed in the flow path.

The air ionized by means of the ionizer, in particular the particles ionized by means of the ionizer, electrostatically interact with the air filter. Thus, in addition to the mechanical separation of particles produced by the air filter, separation due to electrostatic interactions is also caused. Thus, the filtration of particles from air is improved and more efficient. The ionized particles also result in a corresponding electrostatic loading (elektrostatische Aufladung) of the air filter such that electrostatic interactions with the air filter are further enhanced and separation of particles from the air is further improved.

In principle, other components of the system can be arranged in the remaining sections.

Preferably, the remaining sections are entirely free-flowing. This means that the remaining section is preferably free of other components.

In principle, the ionizer can be arranged in the ionizer section centrally or offset towards the middle, transversely to the flow direction. Correspondingly, the remaining section is divided into two parts.

The following embodiments are preferred: the remaining section follows the ionizer section.

In a preferred embodiment, the ionizer is arranged laterally in the ionizer section transversely to the flow direction. This means that the ionizer is mounted at one side of the channel (hereinafter also referred to as the first side). The remaining section extends from the ionizer to a side of the channel (hereinafter also referred to as the second side) opposite the first side transverse to the flow direction. This results in a simplified manufacturing of the system. At the same time, the through-flow of air along the ionizer section is therefore as little disturbed by the ionizer as possible. This means that the flow resistance generated by the ionizer is reduced in this way. Thus, in addition to simplifying the manufacture, an improvement in efficiency is achieved.

It is conceivable that the remaining sections are smaller than or as large as the sub-sections.

In a preferred embodiment, the remaining section is larger than the sub-section. This results in a further reduction of the flow resistance generated by the ionizer, resulting in a further increase of the efficiency.

The following embodiments are considered to be preferred: the ionizer extends longitudinally along the flow path. Thus, the air flows along a longer path along the ionizer. Thus, the route along which the air or particles interact with the field generated by the ionizer increases, and the duration of the interaction increases. As a result, ionization of the air or particles is improved and/or more efficient, such that efficiency is increased.

In principle, the ionizer can have a single electrode.

The ionizer advantageously has at least two electrodes. Thus enabling an improved and/or large-area establishment of the electric field. Thus, efficiency is improved.

The following embodiments are preferred: at least two electrodes of the ionizer, advantageously a plurality of electrodes of the ionizer, in particular all electrodes of one of the ionizers follow each other along the flow path. This results in: the electric field can be uniformly generated over a longer route along the flow path. Thus resulting in increased interaction of air or particles with the electric field and thus more efficient ionization and thus increased efficiency.

The following embodiments are considered to be preferred: the ionizer is designed such that the electric field enters the whole remaining section. More preferably, an electric field is generated throughout the remaining section, so that air, in particular particles, are ionized throughout the remaining section. In this way an improvement in efficiency is achieved.

To generate such an electric field, the ionizer can be constructed and/or operated in any manner. This can be achieved, for example, by means of the potential applied to the electrodes and/or by means of the size and shape of the electrodes and/or by means of the distribution of the electrodes.

The air filter is advantageously arranged in the channel downstream of the ionizer.

Preferably, the air filter is spaced apart from the ionizer along the flow path. The ionized air, in particular the ionized particles, can thus impinge on the air filter over a large area. Thus, efficiency is improved.

The air filter is arranged in the relevant section of the channel (hereinafter also referred to as filter section).

The air filter preferably fills the cross-section of the filter section that can flow through, so that all air flowing through the filter section flows through the air filter. Thus, the air filter is exposed to a large area of flowSo that efficiency is improved.

The solution according to the invention allows: the ionizer is also arranged in a section of the channel having a smaller cross section, wherein the advantages according to the invention can also be achieved in such an arrangement. Thus, for example, the ionizer may be disposed in an area of the channel having less available installation space. Also, in this way, the channels can be configured to be added only to the air filter in order to achieve a large-area upflow of the air filter. Thus, overall, the system can be adapted to different given installation spaces in a simplified manner, wherein at the same time the efficiency is improved.

Correspondingly, the ionizer section can be smaller than the filter section transversely to the flow direction. This means that the filter section has a larger cross section through which flow can pass compared to the ionizer section. This allows for a more flexible placement of the ionizer in the channel.

In a preferred embodiment, the channel widens in the form of a diffuser from the ionizer section towards the filter section. In particular, the diffuser connects the ionizer section with the filter section. The widening of the channel towards the filter section results in a corresponding increase of the cross section of the flow-through towards the filter section. Thus, a large-area flow of the air filter is caused. As a result, the electrostatic loading of the air filter increases, so that the mechanical and electrostatic separation of the particles is improved. This means that an improvement in efficiency is achieved in this way.

The air filter advantageously has a filter medium for filtering particles. In particular, the air filter can be a particle filter.

Advantageously, the air filter has a filter medium for filtering fine dust (hereinafter also referred to as fine dust filter medium). It is conceivable for the air filter to have only such a fine-dust filter medium, i.e. to be designed in particular as a fine-dust filter.

The system can be used in a ventilation device. The ventilation device has a conveying device (e.g. a fan) which conveys air along the flow path during operation. The flow path is thus led through the ventilation device.

The channel can be an integral part of the ventilation means, i.e. it can extend outside the system. The ventilation device may also have a further channel through which the flow path leads.

The ventilation device advantageously has other components in addition to the system and the conveying device. The ventilation device advantageously has at least one heat exchanger for temperature regulation of the air, and is thus configured as an air conditioning system. "temperature control" is understood here to mean heating and/or cooling and/or changing the humidity in the air. The air conditioning installation is thus in particular a so-called HVAC system.

The ventilation device can be used in any application in order to supply air for the application.

The ventilation device can in particular be an integral part of the motor vehicle.

Preferably, after the flow-through system, particularly preferably after temperature regulation, the flow path is introduced into the interior of the motor vehicle. The interior is in particular such an interior for a passenger of a motor vehicle.

It goes without saying that, in addition to the system, ventilation devices and motor vehicles respectively also belong to the scope of the invention.

Further important features and advantages of the present invention are obtained from the dependent claims, the drawings and the related drawing description with reference to the drawings.

It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively given combination but also in other combinations or alone without departing from the scope of the invention.

Drawings

Preferred embodiments of the present invention are illustrated in the accompanying drawings and explained in more detail in the following description, wherein like reference numerals refer to identical or similar or functionally identical components.

Schematically shown respectively:

figure 1 shows a highly simplified view of a similar circuit diagram of a system in a ventilation device of a motor vehicle,

fig. 2 shows a section through the system.

Detailed Description

The system 1 as exemplarily shown in fig. 1 and 2 is for filtering air. For this purpose, the system 1 has a channel 2 through which air flows during operation, in which channel an air filter 4 is arranged. Thus, the flow path 3 of the air is guided through the channel 2. The air filter 4 here removes particles 5 shown in fig. 2 from the air. In the embodiment shown, the particles 5 are fine dust 6. Correspondingly, the air filter 4 has a filter medium 15 (hereinafter also referred to as fine dust filter medium 15) for filtering the fine dust 6. In particular, the air filter 4 can be configured as a fine dust filter 16.

The system 1 is used in a ventilation device 100 which is highly simplified and exemplarily shown in fig. 1. The ventilation device 100 has a conveying device 102 which conveys air along the flow path 3 during operation. In the exemplary embodiment shown, the ventilation device 100 is designed as an air conditioning system 101, which also has at least one heat exchanger 103 for conditioning the air, wherein a single heat exchanger 103 is shown purely by way of example in fig. 1. In the embodiment shown in fig. 1, the conveying device 102 is purely exemplary arranged downstream of the air filter 4, while the heat exchanger 103 is arranged downstream of the conveying device 102. The channel 2 can be an integral part of the ventilation device 100. According to fig. 1, in the embodiment shown, the ventilation device 100 is an integral part of a motor vehicle 200. In this case, motor vehicle 200 has an interior 201 (in particular for passengers, not shown), into which flow path 3 is introduced after the flow through system, in particular after flow through ventilation device 100.

As shown in fig. 1 and 2, the system 1 also has an ionizer 8 disposed upstream of the air filter 4. During operation, the ionizer 8 generates an electric field, not shown, to ionize air, in particular particles 5. The particles 5, in particular the fine dust 6, which are thus ionized, can thus be removed from the air in an improved manner by means of the air filter 4, due to the static interaction with the air filter 4. As shown in fig. 2, the ionizer 8 has at least one electrode 9 for generating an electric field. The ionizer 8 in fig. 2 has here purely by way of example five electrodes 9.

According to fig. 2, an ionizer 8 is provided in the relevant section 7 of the channel 2 (hereinafter also referred to as ionizer section 7). As can also be appreciated from fig. 2, the ionizer 8 extends along the flow path 3. In this case, the ionizer 8 is arranged in a sub-section 10 of the ionizer section 7, which extends transversely to the flow path 3, in a cross-section that can flow through, so that the remaining section 11 of the ionizer section 7, which extends transversely to the flow direction 3, is free of the ionizer 8. In the exemplary embodiment shown, the remaining portion 11 is completely free of components, so that an unimpeded flow of air is possible. The ionizer 8 thus does not completely fill the ionizer section 7 transversely to the flow direction 3, so that the air in the remaining section 11 can flow freely through the ionizer section 7. In contrast to the solutions known from the prior art, the air or particles 5 therefore do not have to flow through the ionizer 8, but rather flow along the ionizer 8 and are ionized here. This results in a reduction of the flow resistance of the air generated by the ionizer 8. Thus, the system 1 and the ventilation device 100 can operate more efficiently. Furthermore, an improvement in the oncoming flow of the air filter 4 and thus a further improvement in the filtration of air is caused in this way. The extension of the ionizer 7 along the flow path 3 also results in: the duration of the interaction of the field generated by the ionizer 8 with air and/or particles 5 increases, so that an improvement and/or an increase of ionization is achieved. This results in a further improvement in the filtration of particles 5 from the air by means of the air filter 4.

As can be seen from fig. 2, in the exemplary embodiment shown, the ionizer 8 is arranged in the ionizer section 7 on the edge side transversely to the flow direction 3. That is, the ionizer 8 is mounted at one side 12 (hereinafter also referred to as first side 12, 12 a) of the channel 2. The remaining section 11 thus extends from the ionizer 8 to a second side 12 of the channel 2 opposite the first side 12, 12a transversely to the flow direction 3 (hereinafter also referred to as second side 12, 12 b). As can also be seen from fig. 2, in the embodiment shown the remaining section 11 is larger than the sub-section 10. Furthermore, as can be seen from fig. 2, the ionizer 8 extends longitudinally along the flow path 3, wherein the electrodes 9 follow each other along the flow path 3. The ionizer 8 is designed and/or operated in such a way that an electric field penetrates into the entire remaining section 11, so that the particles 5 are ionized in the entire remaining section 11. This can be achieved, for example, by the potential applied to the electrode 9 and/or by the size and/or shape and/or distribution of the electrode 9.

According to fig. 1 and 2, the air filter 4 is arranged downstream of the ionizer 8 in a relevant section 13 of the channel 2 (hereinafter referred to as filter section 13). According to fig. 2, in the embodiment shown, the filter section 13 is spaced apart from the ionizer section 7 along the flow path 3.

As can be seen from fig. 2, in the illustrated embodiment the air filter 4 fills the filter section 13 such that all air flowing through the filter section 13 flows through the air filter 4. It can also be seen from fig. 2 that, transversely to the flow path 3, the filter section 13 is larger than the ionizer section 7. The filter section 13 thus has a larger cross section through which flow can pass compared to the ionizer section 7. Correspondingly, the ionizer 7 is arranged in a region of the duct 2, in which region the duct 2 is smaller, because of, for example, a smaller installation space for the system 1 or the ventilation device 100.

As can be seen from fig. 2, in the embodiment shown the channel 2 widens from the ionizer section 7 towards the filter section 13. As can also be seen from fig. 2, the channel 2 can be widened toward the filter section 13 in the form of a diffuser 14. Thus, the air filter 4 is exposed to a large area or completely.

Claims

1. A system (1) for a ventilation device (100), in particular a system (1) for a ventilation device of a motor vehicle (200),

having a channel (2) through which a flow path (3) of air is guided, such that during operation air flows along the flow path (3),

having an air filter (4) arranged in the channel (2), through which the flow path (3) leads and which filters particles (5) from the air during operation,

having an ionizer (8) arranged in an ionizer section (7) of the channel (2), said ionizer having at least one electrode (9) which generates an electric field to ionize air during operation,

it is characterized in that the method comprises the steps of,

-said ionizer (8) extending along said flow path (3),

-the ionizer (8) is arranged in a cross section of the ionizer section (7) that is permeable in a sub-section (10) extending transversely to the flow path (3) such that the remaining section (11) of the ionizer section (7) extending transversely to the flow path (3) is free of the ionizer (8).

2. A system according to claim 1,

it is characterized in that the method comprises the steps of,

the ionizer (8) is mounted at a first side (12, 12 a) of the channel (2) such that the remaining section (11) extends from the ionizer (8) to a second side (12, 12 b) of the channel (2) opposite the first side (12, 12 a) transverse to the flow direction (3).

3. The system according to claim 1 or 2,

it is characterized in that the method comprises the steps of,

the remaining section (11) is larger than the sub-section (10).

4. A system according to claim 1 to 3,

it is characterized in that the method comprises the steps of,

the ionizer (8) extends longitudinally along the flow path (3).

5. The system according to claim 1 to 4,

it is characterized in that the method comprises the steps of,

the ionizer (8) has at least two electrodes (9), wherein the electrodes (9) of the ionizer (8) follow each other along the flow path (3).

6. The system according to claim 1 to 5,

it is characterized in that the method comprises the steps of,

the ionizer (8) is designed such that the electric field enters the entire remaining section (11).

7. The system according to claim 1 to 6,

it is characterized in that the method comprises the steps of,

the air filter (4) is arranged downstream of the ionizer (8) in the channel (2).

8. The system according to claim 1 to 7,

it is characterized in that the method comprises the steps of,

the air filter (4) is arranged in a filter section (13) of the channel (2) and fills the filter section (13) such that all air flowing through the filter section (13) flows through the air filter (4).

9. The system according to claim 8,

it is characterized in that the method comprises the steps of,

the filter section (13) has a larger cross section through which fluid can flow than the ionizer section (7).

10. The system according to claim 8 and 9,

it is characterized in that the method comprises the steps of,

the channel (2) widens in the form of a diffuser (14) from the ionizer section (7) towards the filter section (13).

11. The system according to claim 1 to 10,

it is characterized in that the method comprises the steps of,

the air filter (4) has a fine dust filter medium (15) for filtering fine dust (6).

12. Ventilation device (100), in particular an air conditioning installation (101), for a motor vehicle (200), having a system (1) according to one of claims 1 to 11 and a conveying device (102) which conveys air along the flow path (3) during operation.

13. A motor vehicle (200) having a ventilation device (100) according to claim 12 and an interior space (201), wherein the flow path (3) is introduced into the interior space (201).