WO2020054925A1

WO2020054925A1 - Portable air purifier

Info

Publication number: WO2020054925A1
Application number: PCT/KR2019/001237
Authority: WO
Inventors: 정현종
Original assignee: 정현종
Priority date: 2018-09-14
Filing date: 2019-01-29
Publication date: 2020-03-19
Also published as: KR101974606B1

Abstract

Provided is a portable air purifier which can be conveniently and effectively used at various locations. The portable air purifier comprises: a housing having an intake port and an exhaust port formed on the outer surface thereof; a plurality of fan modules located in the housing and arranged in parallel between the intake port and the exhaust port to introduce or discharge air into or from the housing; a filter module disposed between the intake port and the fan modules to filter air introduced through the intake port; and a control module for controlling each of the plurality of fan modules.

Description

Portable air purifier

The present invention relates to an air purifier, and more particularly, to a portable air purifier that can be used conveniently and effectively in various places.

The types of air pollutants are increasing more than before. The concentration of fine dust that is not perceived by the eye also increases the level of danger, increasing people's anxiety. Regardless of whether it is sunny or cloudy, air pollution is deteriorating, so preparation is essential.

An air conditioning system is formed in buildings and various facilities, and filters inside the air conditioning system can be installed to purify the outside air. In addition, air quality can be improved by installing a separate purifier that can purify the space inside each building such as a home or office. As described above, it is possible to continuously improve the air quality for a specific place by installing a purifier in a fixed place.

However, in any unspecified space where such a purifier is not installed, a problem arises in that air containing contaminants is inhaled as it is. Masks and the like can be used, but it is difficult to wear for a long time due to many inconveniences, and there is a problem that the purification effect is not satisfactory. Even in the case of a vehicle, it is easily exposed to polluted air because it constantly moves through various places and supplies it to the inside while moving. Therefore, there is a problem that it is difficult to sufficiently purify the air with the built-in filter alone. Accordingly, a purification device that can be carried in the past has been developed, but its effect is insignificant since it has low performance and is not suitable for application to vehicles.

[Advanced technical literature]

[Patent Document]

(Patent Document 1) Korean Patent Publication No. 10-2017-0138289, (December 15, 2017)

The technical problem of the present invention is to solve this problem, and to provide a portable air purifier that can be used very conveniently and effectively in various places.

The technical problem of the present invention is not limited to the problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

A portable air purifier according to the present invention includes a housing in which an intake port and an exhaust port are respectively formed on an outer surface; A plurality of fan modules disposed inside the housing and disposed in parallel between the intake and exhaust ports to flow air into and out of the housing; A filter module disposed between the intake port and the fan module to filter air introduced through the intake port; And a control module that controls each of the plurality of fan modules.

The air cleaner further includes a plurality of light sensing sensors installed at different positions outside the housing, and the control module selectively selects the plurality of fan modules according to a difference in the amount of light sensed by the plurality of light sensing sensors. Can be operated with.

The control module may selectively operate the fan module on the side of the light sensor to detect a relatively large amount of light.

The intake port and the exhaust port are formed on the side surface of the housing, and the plurality of fan modules and the plurality of light sensing sensors may be arranged in the vertical direction inside and outside the housing.

Each of the intake ports and the exhaust ports may extend in the vertical direction and overlap the plurality of fan modules.

The housing consists of a lower insertion section that can be inserted into the cup holder of the vehicle and an exposure section above the insertion section, and at least one of the fan module and the light sensor may be disposed in the exposure section.

The air purifier may further include a dust sensor for measuring the dust concentration of the air passing through the housing, and an oxygen generating module that generates oxygen in the housing and mixes it with filtered air.

The portable air purifier of the present invention can improve air quality by purifying air very effectively in various places. In particular, the air purifier of the present invention can automatically purify the surrounding air by automatically changing the operation method in a suitable manner accordingly even if the application location is changed to a vehicle interior or other space. By carrying such an air purifier of the present invention and using it in an arbitrary place, it is possible to breathe in clear air more conveniently.

1 is a perspective view of a portable air purifier according to an embodiment of the present invention.

FIG. 2 is a side view of the air cleaner of FIG. 1.

3 is an exploded perspective view of the air cleaner of FIG. 1.

4 is a cross-sectional view showing the interior of the air cleaner of FIG. 1.

5 and 6 is an operation diagram of the air purifier of Figure 1;

7 is a state diagram of the use of the air purifier of Figure 1;

[Description of codes]

1: Portable air cleaner 10: Housing

11: intake 12: exhaust

13: 1st light detection sensor 14: 2nd light detection sensor

15: first terminal 16: second terminal

21: first fan module 22: second fan module

30: filter module 40: control module

50: dust sensor 60: oxygen generating module

61: oxygen generating portion 101: side portion

102: upper cover 103: lower cover

10a: Exposure section 10b: Insertion section

A: Table B: Cup holder

Advantages and features of the present invention and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete and the ordinary knowledge in the art to which the present invention pertains. It is provided to fully inform the possessor of the scope of the invention, and the invention is only defined by the claims. Throughout the specification, the same reference numerals refer to the same components.

Hereinafter, a portable air cleaner according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7.

1 is a perspective view of a portable air cleaner according to an embodiment of the present invention, FIG. 2 is a side view of the air cleaner of FIG. 1, FIG. 3 is an exploded perspective view of the air cleaner of FIG. 1, and FIG. 4 is the air of FIG. 1 It is a sectional view showing the interior of the purifier.

1 to 4, the portable air purifier 1 according to the present invention is provided with an intake port 11 and an exhaust port 12, and has a structure capable of purifying and discharging air. Particularly, a plurality of fan modules (which are described as the first fan module 21 and the second fan module 22 in this embodiment) disposed in parallel with each other are installed inside each of the plurality of fan modules to operate independently or simultaneously. There are features. The present invention forms a variety of different fluid flow paths as needed with a plurality of fan modules arranged in parallel, and through this, it is possible to operate in a very suitable manner for different places or situations. In addition, such an operation may be performed through a sensing action of a plurality of light sensing sensors formed in different positions (in this embodiment, the first light sensing sensor 13 and the second light sensing sensor 14) are used to detect surrounding conditions or places of use. Since it proceeds by recognizing itself, it is possible to use the portable air purifier 1 of the present invention in various places very conveniently, and the best purification effect can be obtained even if the situation or place changes.

The portable air purifier 1 according to the present invention is specifically configured as follows. The portable air purifier 1 is located inside the housing 10 and the housing 10 in which the intake port 11 and the exhaust port are respectively formed on the outer surface, and is disposed in parallel between the intake port 11 and the exhaust port 12, and the housing 10 ) A plurality of fan modules (hereinafter referred to as first fan module 21 and second fan module 22) that flow air in and out, disposed between the intake port 11 and the fan module, and introduced through the intake port 11 It includes a filter module 30 for filtering the air, and a control module 40 for controlling each of a plurality of fan modules. According to an embodiment of the present invention, the portable air purifier 1 has a plurality of light detection sensors (hereinafter, first light detection sensor 13 and second light detection sensor) installed at different positions outside the housing 10. (14)], the control module 40 may selectively operate the plurality of fan modules according to the difference in the amount of light sensed by the plurality of light sensing sensors. Hereinafter, a specific structure, an operation method, and various other features of the present invention will be described in more detail through an embodiment of the present invention.

The housing 10 may be formed in a cylindrical shape as shown in FIGS. 1 and 2. In the housing 10, an intake port 11 and an exhaust port 12 are formed on the outer surface, and a space communicating with the intake port 11 and the exhaust port 12 is formed inside. Various components may be arranged in the inner space of the housing 10 and air may be passed through the inner space to purify. The housing 10 may be formed in a form including a side portion 101, an upper cover 102, and a lower cover 103, as shown in Figure 3 can be combined to form an overall shape. The intake port 11 and the exhaust port 12 may be disposed opposite to each other of the side portion 101 to be formed on the side surface of the housing 10. The intake port 11 and the exhaust port 12 may extend in the vertical direction, respectively, as shown in FIG. 4 and overlap with a plurality of fan modules (first fan module 21 and second fan module 22).

The intake port 11 and the exhaust port 12 are formed on the side of the housing 10, respectively, but are extended long in the vertical direction and different fan modules arranged in parallel inside the housing 10 [first fan module 21 and product 2 fan module 22], and can maintain the overlapped state. In this case, the overlapping means that the intake vents 11 and the exhaust vents 12 are disposed at least partially overlapping the front and rear of each fan module (see FIG. 4). Through this arrangement, air can be flowed to the first fan module 21 and the second fan module 22 without any problems.

As illustrated in FIG. 2, the housing 10 includes a lower insertion section 10b insertable inside a vehicle's cup holder (see B of FIG. 7) and an exposure section 10a above the insertion section 10b. You can. That is, for example, since the diameter is formed in a cylindrical shape smaller than the cup holder of the vehicle, it is possible to easily fix a part by inserting a part into a structure such as a cup holder. That is, the portable air purifier 1 of the present invention can be easily mounted on a vehicle without a separate mounting device (for example, a connection device such as a clip or a hook or an adhesive-coated support), and automatically adapted to the condition. Purification can be performed by changing the operation method. A detailed operation method will be described in more detail below.

The upper cover 102 and the lower cover 103 constituting the housing 10 may be detachable, if necessary. Due to this, the interior space of the housing 10 can be easily accessed. In particular, the lower cover 103 is provided with a space for inserting the oxygen generating module 60 to be described later, such as exchanging the oxygen generating unit 61 of the oxygen generating module 60 can be made very convenient. have. Pores are formed in the upper cover 102 to allow air to pass through, thereby increasing air permeability of the entire housing 10. The upper cover 102 in which the pores are formed may also function as a discharge path for discharging the bypassing air flow from the dust sensor 50 to be described later.

However, the housing 10 need not be limited to the same shape as the present embodiment, and may be formed in various other shapes. For example, it is not limited to a cylindrical shape or the like within a limit that can be inserted into a cup holder of a vehicle, and can be modified into various three-dimensional shapes. Therefore, the technical idea of the present invention need not be limitedly interpreted by the shape of the housing 10 of the present embodiment.

The intake port 11 and the exhaust port 12 are formed on opposite sides of the outer surface of the housing 10. As described above, each may extend in the vertical direction to maintain an overlapped state with a plurality of fan modules. The intake port 11 and the exhaust port 12 may be formed of, for example, a porous plate having a large number of fine pores, and in such a case, integrally formed with the housing 10 by processing a part of the housing 10 It is possible. However, it is not necessary to be limited as described above, and for example, it is possible to form the intake port 11 and the exhaust port 12 in other ways, such as a method of coupling a mesh body or a mesh-shaped vent to the outside of the housing 10. . The intake port 11 and the exhaust port 12 may also be modified in various ways within a limit to allow air to enter and exit.

The fan module is located inside the housing 10 and is disposed in parallel between the intake port 11 and the exhaust port 12 to allow air to flow in and out of the housing 10. In this embodiment, the fan module includes a first fan module 21 and a second fan module 22, and the first fan module 21 and the second fan module 22 may be arranged in parallel up and down. In this case, the parallel arrangement means that each fan module is arranged to pass fluid through different paths at different positions, for example, by arranging the front and rear of each fan module so as not to overlap each other. Can be achieved. That is, the first fan module 21 and the second fan module 22 may be arranged in parallel vertically as shown in FIGS. 3 and 4, and the front and rear of each fan module are different from each other, not in the vertical direction. The intake port 11 and the exhaust port 12 may be formed to face the side surfaces of the housing 10 formed at a height. By arranging a plurality of fan modules in parallel in the housing 10 as described above, it is possible to effectively purify the air while passing the air through a more suitable fluid flow path according to a change in place or situation.

This embodiment describes an example in which the first fan module 21 and the second fan module 22 are formed, but the number of fan modules need not be limited thereby. That is, in another embodiment, the plurality of fan modules may include three or more fan modules arranged in parallel with each other. Even in such a case, since it is possible to control or operate substantially the same as the description of the present embodiment described later, it is not necessary to limit the technical idea of the present invention to the form of the present embodiment. However, hereinafter, an example in which the first fan module 21 and the second fan module 22 are formed as one embodiment of the present invention will be described in more detail.

The first fan module 21 and the second fan module 22 may have substantially the same structure. Inside each fan module, a fan that is axially coupled and rotates may be formed. The front and rear of each fan module correspond to the direction in which the fan flows in and out, and the front and rear of each fan module may be open. Each fan module can be driven by receiving power and can be controlled by control of the control module 40. Although not shown in the drawings to clearly show the components, the control modules 40 and a plurality of fan modules, a plurality of light detection sensors, a dust sensor 50, etc. It can be electrically connected using a line of the form. Also, although not shown, power may be supplied by installing a battery or the like inside the housing 10, and power may be supplied from the outside through the first terminal 15 and the second terminal 16 provided outside the housing 10. It may be supplied. As shown in this embodiment, the first terminal 15 is installed on the upper side of the housing 10, and the second terminal 16 is separately installed on the lower side to conveniently power either of them selectively. Can be supplied. For example, as described above, when the housing 10 is inserted into the cup holder of the vehicle (see B in FIG. 7), the exposed first terminal 15 on the upper side may be utilized, and both are exposed. In the case, power can be supplied by using a suitable terminal if necessary.

The filter module 30 is disposed between the intake port 11 and the fan module to filter air introduced through the intake port 11. For example, as shown in FIGS. 3 and 4, the filter module 30 extended up and down may be formed and disposed to overlap with both the first fan module 21 and the second fan module 22. have. However, it is not necessary to be limited as described above, and it is also possible to arrange different filter modules between the fan modules and the intake ports 11 as necessary. The filter module 30 may be formed, for example, by combining a filter body inside the frame, and the filter body may be separated and exchangeable. The filter body may be formed of a single material, but the filter bodies of different materials may be multiplexed. Air introduced into the intake port 11 may be purified by using the filter module 30.

Inside the housing 10, there is a dust sensor 50 for measuring the dust concentration of air passing through the housing 10, and an oxygen generating module 60 for generating oxygen inside the housing 10 and mixing it with filtered air. Can be formed. The dust sensor 50 is disposed on the top of the housing 10 and may be disposed adjacent to the upper cover 102 described above. The dust sensor 50 may include an internal flow path or the like formed toward the upper cover 102, and may measure the dust concentration of air flowing through the flow path. The dust sensor 50 may be, for example, configured to measure the dust concentration in a non-contact manner by sensing a light transmission amount or a reflection amount of the fluid flow. However, it is not necessary to be limited as such, and it is possible to form dust concentrations in other ways that can be measured. The oxygen generating module 60 may have the same structure as a container having a vent hole at the top, and may accommodate the oxygen generating unit 61 therein. The oxygen generating unit 61 may be made of a material that generates oxygen by reacting with atmospheric components such as carbon dioxide or moisture in the air. Such a material may be, for example, potassium oxide. However, the oxygen generating module 60 also need not be limited as described above, and may be modified into other forms capable of generating and supplying oxygen. As described above, the oxygen generating module 60 may separate and withdraw the lower cover 103, thereby exchanging the internal oxygen generating unit 61 at an appropriate time. Through this configuration, the air purification ability of the device can be continuously monitored and maintained at a high level, and the oxygen content of the purified air can also be increased to enable more comfortable breathing.

The control module 40 controls each of the plurality of fan modules described above. As described above, the control module 40 and the fan module are electrically connected to exchange signals. The control module 40 may be formed of, for example, a control panel equipped with a computing device and a memory, and a program related to control may be input. The program related to the control may include a program capable of recognizing and analyzing the transmission signal of the light detection sensor described later. The control module 40 may control each by transmitting control signals to the first fan module 21 and the second fan module 22. In this case, controlling each means transmitting a control signal to a plurality of different fan modules to control the whole, which operates only one of the plurality of fan modules, operates all of them, or operates one or the other. It includes all of various controls such as distributing the driving force differently. In particular, the control module 40 receives a detection signal from a plurality of light detection sensors (the first light detection sensor 13 and the second light detection sensor 14), which will be described later, and correspondingly, a plurality of fan modules (first fan) The module 21 and the second fan module 22] may be controlled, and a plurality of fan modules may be selectively operated according to a difference in the amount of light sensed by the light sensor. That is, by using a plurality of light sensing sensors installed at different locations outside the housing 10, the surrounding situation or place can be automatically recognized and the plurality of fan modules can be operated accordingly. Specifically, the control module 40 may selectively operate the fan module on the side of the light detection sensor where the relatively large amount of light is sensed.

A plurality of light sensing sensors may be installed at different positions outside the housing 10. The light sensor may be, for example, an illuminance sensor. In this embodiment, the plurality of light detection sensors are formed of the first light detection sensor 13 and the second light detection sensor 14, but need not be limited as such, and different positions outside the housing 10 as required. In addition, a larger number of light sensors may be installed. The plurality of light detection sensors measure the amount of light reaching the housing 10 at different locations outside the housing 10 and transmit it to the control module 40. The control module 40 recognizes the amount of light reaching the different positions and the difference from the detection signals sensed by the plurality of light sensing sensors arranged at different positions outside the housing 10. Accordingly, the control module 40 may selectively operate a plurality of fan modules (first fan module 21 and second fan module 22) as described above.

The portable air purifier 1 according to the present invention can recognize the arrangement state of the entire device by measuring the amount of light reaching different positions outside the housing 10 through this configuration. That is, a specific part of the device or a part of the device can be recognized from the difference between the amount of light measured by a plurality of light sensing sensors installed at different locations outside the housing 10 or not. . As such, while recognizing the arrangement state of the entire device, the fan module at a position corresponding to the exposed portion of the control module 40 can be operated. For example, if the difference in the amount of light is relatively large, a part of the housing 10 is exposed (the amount of light is measured relatively relatively at that position), and some may be a situation that is covered or shielded by a specific object (at that position) The amount of light is measured to be less than a certain value) Instead of driving the fan module on the side of the unnecessary shielded portion, the fan module on the side on which the amount of light is largely measured among the plurality of fan modules can be selectively driven. In addition, when the difference in the amount of light is small or there is substantially no difference, the entire housing 10 may be exposed or the entire housing 10 may be shielded. You can stop the operation. As described above, the plurality of fan modules can be selectively operated to purify the air more effectively.

In particular, a plurality of light detection sensors are arranged in the vertical direction on the outside of the housing 10 to transmit the magnitude of the amount of light reaching the top and bottom and the difference to the control module 40. In addition, a plurality of fan modules (the first fan module 21 and the second fan module 22) are arranged in the vertical direction inside the housing 10, the upper or lower fan module under the control of the control module 40 This can work selectively. For example, as described above, the intake port 11 and the exhaust port 12 are formed on the side of the housing 10, and the plurality of fan modules and the plurality of light detection sensors are housings as shown in FIGS. 3 and 4. It may be arranged in the vertical direction on the inside and outside of (10). Since this arrangement is a structure capable of properly operating the fan module in a corresponding position according to whether the upper and lower parts of the housing 10 are exposed and shielded, the portable air purifier 1 as described above is used as a cup holder of the vehicle (FIG. It is very useful in case of using it after installing it on B). As described above, the housing 10 may be formed of a lower insertion section (see 10b in FIG. 2) and an upper exposure section (see 10a in FIG. 2) that can be inserted into the cup holder, and an exposure section. At 10a, at least one fan module (which may be the first fan module 21) and a light sensor (which may be the first light sensor 13) may be disposed. Hereinafter, a detailed operation process according to the arrangement will be described in more detail with reference to FIGS. 5 to 7.

5 and 6 are operation diagrams of the air cleaner of FIG. 1, and FIG. 7 is a state diagram of use of the air cleaner of FIG.

The housing 10 of the portable air cleaner 1 may be formed in a cylindrical shape extending in the vertical direction as shown in FIGS. 5 and 6. A plurality of fan modules and a plurality of light sensing sensors are arranged inside and outside the housing 10 in the vertical direction as illustrated. As described above, the first fan module 21 and the second fan module 22 are arranged in parallel in the vertical direction inside the housing 10, and the first light sensor 13 and the second light sensor 14 are The housing 10 is disposed separately from each other in the vertical direction on the outside. As illustrated, the first light detection sensor 13 may be disposed on the upper side of the housing 10 and the second light detection sensor 14 is disposed on the lower side of the housing 10, respectively, so that the upper and lower portions of the housing 10 are respectively provided. It is possible to measure the amount of light reaching the light. When the amount of light having the same or similar size is measured from the first light sensor 13 and the second light sensor 14, the control module 40 may include the first fan module 21 and the second fan as shown in FIG. All of the modules 22 can be operated. At this time, the light amount of both the first light sensor 13 and the second light sensor 14 may be greater than or equal to a set size, from which the control module 40 recognizes that the entire upper and lower parts of the housing 10 are exposed. The entire plurality of fan modules may be operated and air may be sucked and purified through the entire intake port 11.

On the other hand, when the amount of light measured by the first light sensor 13 and the second light sensor 14 is significantly different from each other, as shown in FIG. 6, a plurality of fan modules (first fan module 21 and The second fan module 22] may be selectively operated. That is, when the amount of light of the first light sensor 13 is measured relatively large and the amount of light of the second light sensor 14 is measured below a set size, the control module 40 is connected to the first light sensor 13 side. Only the located first fan module 21 can be operated, and the second fan module 22 can be stopped. Therefore, the air flows in and out through a part of each of the intake port 11 and the exhaust port 12 (which may overlap the exposure section 10a of the aforementioned housing 10) overlapping the first fan module 21, It can purify the air. In this case, the control module 40 may increase the driving force of the first fan module 21 to accelerate the fan, thereby increasing the air flow rate. That is, when only a part of the plurality of fan modules selectively operates, the control module 40 may control to increase the fan rotation speed of the operating fan module by changing the distribution of the driving force.

In this way, either the first fan module 21 or the second fan module 22 is operated, or both the first fan module 21 and the second fan module 22 are operated to operate the housing 10. It is possible to form a fluid flow of different paths through. Through this, it is possible to purify while passing air through a fluid flow path optimized for each of different states in which only a part of the housing 10 is exposed or all are exposed. In addition, this operation is made by automatically recognizing the arrangement state of the entire portable air cleaner 1 from the amount of light measured by the first light sensor 13 and the second light sensor 14 outside the housing 10. The portable air purifier 1 of the present invention can be used very conveniently regardless of the place and situation.

For example, as shown in (a) of FIG. 7, when the entire portable air purifier 1 is placed on a table A and used in a completely exposed state, a plurality of fan modules may be generated by the operation of FIG. 5 described above. Since the whole is in operation, it is possible to purify the air by inhaling it through the intake vent 11, and as shown in FIG. 7 (b), the portable air purifier 1 is inserted into the cup holder B of the vehicle and used inside the vehicle. In the case, since a plurality of fan modules are selectively operated by the operation process of FIG. 6 described above, air may be sucked and purified through the exposed portion of the intake port 11. In addition, when only a part of the plurality of fan modules is operated as described above, since the distribution of the driving force is changed and the air flow rate is increased, even if the intake port 11 is relatively narrow, as shown in FIG. 7B. It can circulate rapidly and exert sufficient purification effect. In this way, the air quality can be improved very effectively by using the portable air purifier 1 of the present invention.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may be implemented in other specific forms without changing the technical spirit or essential features of the present invention. You will understand. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

The present invention relates to a portable air purifier for improving the quality of the indoor space, it can be easily installed and effectively used in a variety of spaces, it has high industrial applicability.

Claims

A housing in which an intake port and an exhaust port are respectively formed on an outer surface;

A plurality of fan modules disposed inside the housing and disposed in parallel between the intake and exhaust ports to flow air into and out of the housing;

A filter module disposed between the intake port and the fan module to filter air introduced through the intake port; And

Portable air purifier comprising a control module for controlling each of the plurality of fan modules.
According to claim 1,

The housing further includes a plurality of light sensing sensors installed at different positions outside,

The control module is a portable air purifier that selectively operates the plurality of fan modules according to the difference in the amount of light sensed by the plurality of light sensors.
According to claim 2,

The control module is a portable air purifier that selectively operates the fan module on the side of the light sensor to detect a relatively large amount of light.
According to claim 2,

The intake port and the exhaust port are formed on the side of the housing, a plurality of the fan module and a plurality of the light sensor is a portable air purifier arranged in the vertical direction inside and outside the housing.
According to claim 4,

The intake port and the exhaust port each extend in the vertical direction and the portable air purifier overlapping a plurality of the fan module.
According to claim 4,

The housing comprises a lower insertion section that can be inserted into a cup holder of a vehicle and an exposure section above the insertion section, wherein the fan module and the light sensor are disposed at least one each in the exposure section.
According to claim 1,

Dust sensor for measuring the concentration of dust in the air passing through the housing, and

A portable air cleaner further comprising an oxygen generating module that generates oxygen inside the housing and mixes it with filtered air.