CN113423993A

CN113423993A - Air purifier

Info

Publication number: CN113423993A
Application number: CN202080004557.6A
Authority: CN
Inventors: 徐东禛; 吴龙柱; 金民锡; 李廷元
Original assignee: Miro Co Ltd
Current assignee: Miro Co Ltd
Priority date: 2020-01-17
Filing date: 2020-08-19
Publication date: 2021-09-21
Anticipated expiration: 2040-08-19
Also published as: CN113423993B; KR20210093724A; KR102350889B1; KR102350889B9

Abstract

The present invention relates to an air purifier, an air purifier according to an embodiment of the present invention, including: a body for forming an appearance; a suction part formed on the main body for sucking air; a discharge portion formed on the main body and discharging air sucked through the suction portion; and a fan module provided inside the main body to form a flow of air flowing from the suction portion to the discharge portion, the fan module including: a driving part forming a rotating shaft and generating power; a fan receiving power from the driving part and rotating about the rotating shaft; and a shroud accommodating the fan and disposed between the suction portion and the discharge portion to guide the air sucked through the suction portion to the discharge portion, the shroud including a guide portion for guiding the foreign matter flowing in through the discharge portion in a direction opposite to a flow of the air.

Description

Air purifier

Technical Field

The invention relates to an air purifier.

Background

An air purifier is understood as a device that sucks contaminated air to purify it and discharges the purified air. As an example, the air purifier may include: an air supply device for flowing the external air into the air purifier; and a filter which can filter dust or bacteria, etc. in the air.

In general, an air cleaner sucks in outside air through an intake port, purifies the sucked air through filters of various materials provided inside the air cleaner, and then discharges the purified air through a discharge port.

In order to form the above-described airflow, a blower fan is provided inside the air cleaner. Since the capacity of the air cleaner is limited and the capacity of cleaning the entire air in an indoor space such as a home or an office is limited, there is a problem that although the air around the air cleaner can be cleaned, it is difficult to clean the air in a space far from the air cleaner.

As described above, various studies have been made to increase the purification area of the air purifier, and generally, the purification area of the air purifier is increased by using a high-speed fan motor, and the inlet port is formed on the lower side of the air purifier and the outlet port is formed on the upper side of the air purifier.

In the case of a high-speed fan motor, since a motor is driven to generate more heat than a general fan motor, a structure for discharging heat is required, and a discharge port side is generally communicated with the motor to discharge heat. This is because the space where the fan rotates must ensure a pressure difference to form a rapid flow of air, and thus an increase in sealing rate is required.

However, as described above, in the air cleaner adopting the upper discharge structure, foreign substances flow into the direction of gravity and are accumulated in the fan motor, which results in a reduction in performance of the fan motor. In particular, when a fluid flows in through the discharge port, a short circuit or the like occurs.

Disclosure of Invention

Technical subject

It is therefore an object of the present invention to solve the above problems.

The invention aims to provide an air purifier which can guide foreign matters flowing in through a discharge port and prevent the foreign matters from accumulating in a fan motor.

Another object of the present invention is to provide an air cleaner in which a guide portion is formed in a shroud of the air cleaner so that foreign substances flowing in are moved in a gravity direction by the guide portion.

Means for solving the problems

To solve the illustrative embodiments of the subject of the present invention, there is provided an air purifier, including: a case for forming an external appearance; a suction part formed at least a portion of an outer surface of the case, for sucking external air; a discharge portion formed on an upper surface of the housing and discharging air sucked through the suction portion; and a FAN (FAN) module provided inside the casing to form a flow of air flowing from the suction portion to the discharge portion, the FAN module including: a fan motor forming a rotation shaft and generating a driving force; a blower fan which receives a driving force from the fan module and rotates about the rotation axis to form the air flow; and a casing forming a space for accommodating the fan motor and the blowing fan, the casing being fixed between the suction part and the discharge part inside the casing, and including a guide part on an inner surface thereof for guiding foreign matter flowing in through the suction part in a direction of gravity.

Preferably, the housing may include: a first body having the suction part formed on an outer surface thereof and forming a space for accommodating a filter for purifying air; and a second body having the discharge part formed on an outer surface thereof and forming a space for accommodating the fan module, the first body and the second body being provided to be separable from each other.

Also, the housing may be fixed to a boundary surface between the second body and the first body, and the housing may guide the foreign matter flowing in through the suction part to the second body through the guide part.

Also, an exemplary embodiment of the present invention may provide an air purifier, including: a body for forming an appearance; a suction part formed on the main body for sucking air; a discharge portion formed on the main body and discharging air sucked through the suction portion; and a fan module provided inside the main body to form a flow of air flowing from the suction portion to the discharge portion, the fan module including: a driving part forming a rotating shaft and generating power; a fan receiving power from the driving part and rotating about the rotating shaft; and a shroud accommodating the fan and disposed between the suction portion and the discharge portion to guide the air sucked through the suction portion to the discharge portion, the shroud including a guide portion for guiding the foreign matter flowing in through the discharge portion in a direction opposite to a flow of the air.

The body may include: a first body having the discharge part formed on one surface thereof and forming a space for accommodating the fan module; and a second body formed with the suction part and separably provided with the first body.

Also, the suction part may be formed along a circumference of the second body, and the second body may include a filter spaced apart from the suction part by a predetermined interval and disposed along an inner circumference of the second body.

In addition, the shield may be formed to have a cross section that is widened in a moving direction of the air flowing in from the suction part, and the guide part may form an inflow port that is formed at an end of the shield and guides the air flowing in from the suction part to the first main body side.

The guide portion may include: a first member formed at an end of the shield and bent toward an inner side of the first body; and a second member extending from the first member in a direction inward of the first body. The second member is provided obliquely to a moving direction of the air flowing in from the suction portion.

The guide portion may further include a third member extending from the second member toward the second body, and an inflow port for guiding the air flowing from the suction portion to the first body side may be formed in the third member.

Each feature of the above-described embodiments can be combined into other embodiments, unless contradicted or exclusive to other embodiments.

Effects of the invention

According to various embodiments of the present invention, it is possible to improve durability of the fan motor and to prevent a safety accident that may occur due to a short circuit inside the fan motor in advance.

According to various embodiments of the present invention, even if a user carelessly drops fluid of water, beverage, etc. to a suction port of an air purifier, malfunction of the air purifier can be prevented by guiding the fluid to a lower portion of the air purifier.

The effects of the present invention are not limited thereto, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

Drawings

Fig. 1 is a schematic view of an external appearance of an air purifier according to an embodiment of the present invention.

Fig. 2 is a schematic view of the first body of fig. 1.

Fig. 3 is a side sectional view of fig. 1.

Fig. 4 is a side sectional view of the first body of fig. 3.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to facilitate a comprehensive understanding of the methods, devices, and/or systems described herein. However, these are merely examples, and the present invention is not limited thereto.

In describing the embodiments of the present invention, when it is judged that the detailed description of the known technology related to the present invention may make the gist of the present invention unclear, the detailed description thereof will be omitted. In addition, the terms described later are terms defined in consideration of functions in the present invention, and may be changed according to the intention or custom of a user or an operator. Therefore, terms should be defined based on the contents throughout the specification. The terminology used in the detailed description is for the purpose of describing the embodiments of the invention only and is not intended to be limiting. Unless otherwise specifically used, expressions in the singular include meanings in the plural. In the present specification, expressions such as "comprising" or "having" should be interpreted as referring to certain features, integers, steps, acts, elements, parts or combinations of these, and not excluding the presence or possibility of one or more other features, integers, steps, acts, elements, parts or combinations of these other than those mentioned.

In describing the components of the embodiments of the present invention, the terms first, second, A, B, (a), (b), and the like may be used. These terms are only used to distinguish one component from another component, and do not limit the nature, order, or sequence of the components.

Fig. 1 is a schematic view of an external appearance of an air purifier according to an embodiment of the present invention, and fig. 2 is a schematic view of a first body of fig. 1.

Next, description will be made with reference to fig. 1 and 2.

The air cleaner 1 according to an embodiment of the present invention may include

main bodies

10, 20, a suction part 21, a discharge part 11, and a fan module forming an external appearance.

A discharge portion 11 is formed on one surface of the first body 10, and a space for accommodating the fan module is formed therein. The air cleaner 1 of the present embodiment may be formed by combining a first body 10 relatively positioned at an upper portion and a second body 20 relatively positioned at a lower portion. As a matter of course, the first body 10 and the second body 20 may be separated.

The

bodies

10 and 20 may have various forms. For example, the cross section may have a rectangular shape or may have a cylindrical shape. The suction portion 21 and the discharge portion 11 may be formed at various positions communicating with the inside of the

main bodies

10 and 20.

The discharge portion 11 of the air cleaner 1 of the present embodiment is formed on the upper surface of the main body, and the suction portion 21 is formed on the lower side of the main body. This is because it is preferable to form the discharge port on the upper side of the air cleaner in order to discharge the cleaned air into the space in which the user actually lives and to enlarge the diffusion area of the discharged air. Therefore, the suction port of the present embodiment is provided above the air cleaner. In more detail, the discharge part 11 may be provided on the upper surface of the first body 10, and the suction part 21 may be formed along the circumference of the second body 20.

That is, the suction part 21 may form a part of an upper face of the air cleaner.

The remaining portion of the upper surface of the air cleaner may be provided with a display portion 13.

The display part 13 may display the air quality (based on the PM value) of the indoor space where the air purifier is currently located. Of course, the display part 13 may display various information such as time, an air purification mode input to the air purifier, an operation time of the air purifier, and the like. The user can control the above elements through the display unit 13.

As described above, when the display unit 13 is provided in a part of the upper surface of the air cleaner, the display unit 13 may be formed in the central portion of the upper surface of the air cleaner, and the discharge unit 11 may be formed in the remaining area of the upper surface of the air cleaner along the periphery of the display. This is because the amount of air to be purified and discharged can be increased by increasing the area of the discharge portion 11 as much as possible.

Therefore, as described above, the entire upper surface of the air cleaner may be the discharge portion 11, and of course, the display portion 13 may be formed in a part of the side surface of the air cleaner.

The suction portion 21 is a portion into which outside air flows. The suction portion 21 is preferably formed to have a wide area in order to increase the suction amount of air. The suction part 21 of the present embodiment may be formed along a lower circumferential surface of the air cleaner.

Therefore, the air cleaner of the present embodiment is an air cleaner of an upper discharge structure that sucks external air into a lower portion of the air cleaner, purifies the air in the air cleaner, and discharges the purified air from an upper portion of the air cleaner.

In addition, the first body 10 and the second body 20 may be separately provided. Therefore, the first body 10 may be provided with a coupling portion 17 at a lower portion thereof to be assembled with the second body 20. In addition, the first body 10 may be provided with a button 15 in order to easily couple and separate the first body 10 and the second body 20. For example, the user may release the coupling of the first body 10 and the second body 20 by pressing the button 15 and then separate the first body 10 from the second body 20.

A penetration portion 2031 may be formed inside the lower portion of the first body 10. The penetration portion 2031 may form a part of a flow path through which the external air flowing from the suction portion 21 of the second body 20 moves toward the first body 10. That is, the first body 10 and the second body 20 may communicate with each other through the penetration portion 2031.

In addition, the lower surface of the first body 10 may form a contact surface 19 that contacts the upper surface of the second body 20. The contact surface 19 is formed on the circumference of the through portion 2031, and can maintain the rigidity of the first body 10 when the first body 10 is coupled to or separated from the second body 20.

Fig. 3 is a side sectional view of fig. 1, and fig. 4 is a side sectional view of the first body of fig. 3.

Next, description will be made with reference to fig. 3 and 4.

A Fan module (Fan module) is provided in the first body 10, and can form a flow of air flowing from the suction portion 21 to the discharge portion 11.

The fan module may include: a driving portion 101 forming a rotation shaft and generating a driving force; a fan 105 which receives power from the driving part 101 and rotates about the rotation axis to form the air flow; and a shroud 103 which forms a space for accommodating the driving unit 101 and the fan 105, is provided between the suction unit 21 and the discharge unit 11, and guides the air sucked through the suction unit 21 to the discharge unit 11.

The fan 105 may include a hub coupled to the rotation shaft of the driving part 101 and a plurality of blades radially extended from the hub. In addition, the shroud 103 may be formed with a fan inlet corresponding to the penetration portion 2031.

The hub may include: a combination hole for inserting the rotation shaft of the air supply motor; and a guide portion radially extended from the coupling hole to change a moving path of the air sucked from the suction port.

That is, the external air flowing in from the suction part 21 may move from the lower portion to the upper portion of the air cleaner 1 along the longitudinal direction of the air cleaner, be radially diffused by the fan module, and move to the discharge part 11. Therefore, as an example of the present embodiment, the fan 105 may be a 4-flow fan.

Describing the flow of air in more detail as follows; air may move from a lower portion to an upper portion of the air cleaner through the fan suction port in a direction parallel to a rotation axis of the motor, and a direction of the movement path to a side of the motor may be changed by the guide portion. Accordingly, the guide part may have a conical shape through which upper and lower parts penetrate, and a rotation shaft of the motor may be inserted into a portion of the guide part penetrated, and thus, the portion of the guide part penetrated may be defined as the coupling hole.

As described above, the air cleaner 1 of the present embodiment has a structure that sucks in outside air from the lower portion and discharges the air to the upper portion side. Accordingly, the suction part 21 is formed along the circumference of the second body 20, and a filter 201 may be provided inside the second body 20, spaced apart from the suction part 21 by a predetermined interval, and provided along the inner circumference of the second body 20. Therefore, the filter 201 may be provided in a cylindrical shape.

In one aspect, the first body 10 and the second body 20 may be separately provided. In addition, the second body 20 may be provided to be interchangeable with the first body 10. It is effective to set the amount of sucked external air differently according to the size of a space where the air cleaner is set. Of course, this may be done by software to control the intake of the air purifier, but it may also be done by hardware to adjust the physical intake of the air purifier. Accordingly, the air cleaner is constructed by an upper body and a lower body having a relative height difference, constructed by combining two separable bodies, and particularly, the second body 20 is interchangeable with the first body 10.

The second body 20 is formed in a housing shape, and has an open upper portion and an empty space therein. In the present embodiment, the housing of the second body 20 is formed in a cylindrical shape. The filter 201 is detachably provided in the internal space of the second body 20.

In the present embodiment, the second body 20 is provided with the suction part 21 for sucking the air contaminated outside on the outer circumferential surface thereof, and the suction part 21 is provided over the entire 360 degrees along the outer circumferential surface of the second body 20, so that the air contaminated outside can be sucked in all directions. Therefore, the air purifier is not restricted by the set environment, and can suck the polluted air outside in all directions.

A plurality of inflow holes or inflow slits of a predetermined size may be formed at the suction part 21 to allow contaminated air to flow in.

More than one coupling groove may be formed at least partially around the opened upper portion of the second body 20. The coupling groove is provided to be firmly coupled to the filter 201, and the filter 201 may be fixed to the inside of the second body 20 by the coupling groove. Of course, the filter 201 may be separated from the coupling groove as needed. That is, the filter 201 is detachably provided inside the second body 20.

The filter 201 is formed in a cylindrical shape and is provided over the entire 360-degree area along the outer circumferential surface of the second body 20 corresponding to the suction portion 21. That is, the filter 201 may perform a filtering function in all directions of the outer 360 degrees.

A separation member in the form of a label may be provided on the upper circumference of the filter 201 so that a user can lift the filter 201 from the second body 20 to separate it. One side of the separation member is coupled to the opened upper circumference of the second body 20, and the other side of the separation member may protrude from the upper portion of the second body 20 in the opened direction. Therefore, a part of the separation member may be exposed to the outside in a state where the filter 201 is inserted into the lower body.

Preferably, the separation member is provided in plurality in pairs on the opened upper circumference of the lower body to face each other.

With this structure, when the filter 201 inserted into the empty space of the second body 20 is separated from the second body 20 for replacement or cleaning reasons, the separation member exposed to the outside can be grasped and lifted up for separation.

The second body 20 may be formed in different sizes to be interchanged. Of course, the first body 10 may be combined with the second body 20 without being formed in size. Therefore, the first body 10 can be used interchangeably with the second body 20 having a different capacity.

That is, the user can couple the second body 20 of the air cleaner to the first body 10 according to the size of the space to be cleaned, the environment, etc., and thus, can effectively clean the air of the target space.

In addition, the number of revolutions of the fan of the air cleaning device may be automatically set according to the air cleaning capacity of the second body 20. This is because, as the air purification capacity of the second body 20 is large, the air purification range of the air purifier is widened, and thus, it is preferable to increase the number of rotations of the fan.

As an example of automatically setting the rotation speed of the fan, there may be a method in which the capacity of the second body 20 controls a fan module provided inside the first body 10 through a contact portion according to an intrinsic value input to the respectively replaceably provided second bodies 20.

The upper portion of the first body 10 is opened, and the opened space may be the discharge portion 11 of the present embodiment. The lower portion of the first body 10 may be coupled to the opened upper portion of the second body 20. In more detail, a space opened at a lower portion of the shield 103 provided inside the first body 10 and a space opened at an upper surface of the second body 20 forming the penetrating member 203 extended toward the first body 10 side may communicate with each other. That is, the penetration portion 2031 may form a part of a flow path in which the first body 10 and the second body 20 communicate with each other to move the external air flowing in from the second body 20.

The first body 10 and the second body 20 may be coupled to each other by providing magnetic bodies having different magnetism on their circumferential surfaces in contact with each other.

Therefore, it is preferable that the upper circumference of the second body 10 and the lower circumference of the first body 10 correspond to each other.

A plurality of wheels for easily moving the air cleaner may be provided at a lower portion of the second body 20. The rotation of the wheel is fixed according to the user's manipulation, and the position of the air cleaner can be easily fixed.

The second body 20 may include a contact portion on an upper peripheral surface thereof, the contact portion being a portion that is brought into contact with the first body 10 when coupled thereto. Accordingly, the first body 10 and the second body 20 of the air purifier can be more firmly combined.

The power supplied to the second body 20 through the contact portion may be supplied to the first body 10. Of course, the first body 10 may be directly supplied with power from the outside.

The cover 103 is provided between the suction portion 21 and the discharge portion 11 in the air cleaner 1, and may include a guide portion 107 on an inner surface thereof for guiding the foreign matter flowing in through the discharge portion 11 in a gravitational direction.

The cover 103 is provided on the upper side of the suction portion 21 and on the lower side of the discharge portion 11 in the air cleaner 1. That is, the shroud 103 guides the outside air flowing in from the suction portion 21 to the discharge portion 11.

Since the discharge portion 11 of the present embodiment is provided along the periphery of the display portion 13 on the upper surface of the first body 10, the shield 103 is preferably formed in a shape whose cross section is widened in the moving direction of the air flowing in from the suction portion 21. Therefore, as described above, according to the shape in which the shield 103 is provided with the cross section widening with the moving direction of the air, the inner circumferential surface of the shield 103 may be formed to be curved.

That is, the shield 103 may have a shape in which a sectional area becomes wider with a moving direction of air, and in such a shape, a lower circumference of the shield 103 may be formed smaller than an upper circumference of the shield 103.

A space for the blades to rotate is formed inside the shroud 103, and as the blades rotate, a moving path of the air current moving from the lower portion to the upper portion of the air cleaner is changed, so that a flow moving upward on the outer circumference of the blades can be formed.

In more detail, the driving part 101 of the fan module is located at a central portion of the shroud 103, and an outer circumference of the fan 105 may be formed smaller than a lower circumference of the shroud 103. In addition, since it may have a shape in which a sectional area is widened from a lower portion toward an upper portion of the shroud 103, an air flow linearly moving from the lower portion toward the upper portion may be guided in accordance with a rotation radial direction of the fan 105.

The air guided in the radial direction is discharged to a space near the upper outer periphery of the shroud 103. This is because, as described above, since the driving unit 101 for transmitting power is provided with the rotary shaft formed at the central portion of the shroud 103, air cannot be discharged through the central portion of the shroud 103.

The above-described configuration also relates to the configurations of the display 13 and the ejection portion 11 of the first body 10. As described above, even if the entire surface of the first body 10 is used as the discharge port, the shroud and the fan motor cannot discharge air through the entire upper surface of the first body 10. When the air is discharged through the entire upper surface of the first body 10, the air flow is guided to the central portion of the shroud 103, which is the upper portion of the driving unit 101, by forming a flow path separately, and therefore, in such a configuration, the discharge amount of the purified air is reduced due to the high impedance of the air flow.

Therefore, a display may be provided in a central portion of the upper surface of the first body 10, and it is preferable that air is discharged in a space between the outer periphery of the first body 10 and the outer periphery of the display in the central portion.

In addition, the end of the shield 103 of the present embodiment may be located at the boundary between the second body 20 and the first body 10. Preferably, the second body has an intake part 21 formed on the entire circumference thereof to increase the intake amount of the air cleaner, and a fan module is disposed as close as possible to the intake part 21 to increase the intake force, so that the shroud 103 may be fixed to the upper end surface of the second body 20.

Preferably, the circumference of the upper end surface of the second body 20 corresponds to the circumference of the lower end surface of the first body 10. This is because a level difference may be prevented from occurring at the outer surface of the air cleaner when the first body 10 and the second body 20 are combined, and a greater pressure difference may be generated only if the first body 10 is combined with the second body 20 to increase the sealing rate of the inside of the air cleaner.

In addition, preferably, the filter 201 disposed inside the second body 20 may be formed in a hollow shape, and a lower circumference of the shield 103 corresponds to a circumference of the filter 201. Since an inlet through which purified air passing through the inner space of the second body 20 flows is formed at a lower portion of the shroud 103, a greater pressure difference, which is greater than the suction force, may be generated by increasing a closing rate of the inner spaces of the first and

second bodies

10 and 20.

The second body 20 may have a cylindrical filter 201 inside, and a suction portion 21 formed along an outer circumferential surface thereof. The suction portion 21 may be spaced apart from the outer circumferential surface of the cylindrical filter 201 at a predetermined interval.

This is because it is difficult to generate a sufficient suction force if the outer peripheral surface of the filter 201 is in contact with or very close to the suction part 21, and when the outer peripheral surface of the filter 201 is in close contact with the suction part 21, the filter inside the first body 10 cannot be easily replaced after the user separates the first body 10 from the second body 20.

As described above, the lower circumference of the shroud 103 of the present embodiment is an inlet into which purified air flows, and the lower circumference of the shroud 103 is preferably formed to correspond to the circumference of the cylindrical filter 201 located inside the second body 20.

The moving path of the air passing through the air cleaner 1 of the above-described configuration is explained as follows; when the fan module is driven, a flow of the outside air flowing in through the intake portion 21 is generated (f 1). The outside air flows in through the intake unit 21 and is then purified by the filter 201.

Then, the purified air passes through the penetration portion 2031 and moves from the second body 20 to the first body 10 (f 2). The air purified inside the first body 10 moves toward the discharge portion 11 along the curved inner peripheral surface of the hood 103 (f3), and is discharged to the outside through the discharge portion 11 (f 4).

On the other hand, in a home with an infant, various foreign substances often flow into the inside of the fan of the air cleaner. In this case, the foreign materials caught inside the fan cannot be taken out or discharged from the inside to the outside basically, and thus, the foreign materials can be removed only after being completely disassembled.

In addition, when liquid such as water, juice, etc. is introduced, it is accumulated inside the air cleaner and is difficult to discharge, so that there is a problem in that after-sales service of a manufacturer or distributor needs to be received, and a higher cost than the actual cost is generated in the manufacturer or distributor.

The invention aims to remove foreign matters without affecting the function and performance of an air purifier by a structure that the foreign matters or liquid flows downwards immediately by gravity when the foreign matters or the liquid is entered.

Therefore, as in the present embodiment, in the air cleaner with the discharge port directed upward, the blower fan designed so that foreign matter and liquid are not caught is provided; and a blower fan casing which moves downward immediately by gravity when foreign matters and liquid are introduced.

This embodiment discloses a structure that, when the foreign matter enters from the air blowing port on the upper part of the air cleaner, the entered foreign matter is not caught by the internal blowing fan, and the foreign matter is not caught and flows to the lower filter in the state of being provided with the casing of the blowing fan.

Also, as described above, the upper and lower portions of the air cleaner are separately provided. Therefore, when the foreign substances enter the inside of the air purifier, the user can separate the air purifier to remove the foreign substances.

This embodiment discloses a structure in which the upper portion of the separated air cleaner is turned upside down, there is no portion to be caught, and foreign materials and liquid may flow down by gravity.

Referring to fig. 4, in the structure of the air cleaner, as in the present embodiment, the discharge portion 11 is formed at the upper portion and the suction portion 21 is formed at the lower portion, and foreign substances enter through the discharge portion 11 and then move toward the fan module side in the gravity direction (f 5).

Then, the inflow foreign matter may move along the inner circumferential surface of the shield 103. This is because, in the fan configured as in the present embodiment, since the radial air flow is formed radially outward of the rotation shaft, the foreign matter can move along the inner peripheral surface (f6) of the shroud 103.

The foreign matter moving along the inner peripheral surface of the shroud 103 moves through the gap between the fan 105 and the lower portion of the shroud 103 (f7), and is guided to the second body 20 side by the guide portion 107.

Therefore, in the air cleaner structure of the present embodiment, it is possible to prevent foreign substances from being accumulated inside the fan module, and, as described above, even if foreign substances enter the air cleaner through the discharge part 11, the user can separate the first body 10 from the second body 20, easily removing the foreign substances accumulated inside the second body 20.

The air cleaner includes a blower fan, a circuit, a sensor, an operation unit, and the like on the upper portion thereof, and a filter on the lower portion thereof. In this case, the external power is connected through the lower portion or the upper portion, and the electrical connection between the lower portion and the upper portion can be achieved through the contact portion described above.

Therefore, the shroud 103 of the present embodiment is provided between the suction portion 21 and the discharge portion 11 in the air cleaner, and discloses a guide portion 107 for guiding the foreign matter flowing in through the discharge portion 11 in the direction of gravity.

In general, in order to prevent deformation of the shroud during injection molding, the shroud must ensure a predetermined or more shrinkage rate, and a protruding member protruding upward from the lower portion of the shroud is formed around the lower portion of the shroud in order to generate a pressure difference and increase a sealing rate of a place where the fan motor rotates.

Further, the case is fixed inside the air cleaner by the thickness, shape, and the like of the protruding member. In the above structure, the protruding member forms a portion that catches and accumulates foreign matter that enters through the discharge portion.

Therefore, in the present embodiment, the guide portion 107 is formed at the lower portion of the shield 103, and thus, the foreign materials flowing in through the discharge portion 11 may be caught and accumulated, and the foreign materials flowing in through the discharge portion 11 may be moved to the second body 20, so that the user may clean the second body 20 and easily remove the foreign materials flowing in.

As described above, since the air purifier of the present embodiment has the fan module, the display, the circuit board, and the like inside the first body 10, when the foreign matters are accumulated inside the first body 10, the foreign matters are not easily removed, and the accumulated foreign matters may damage the electronic product.

Therefore, the foreign matter is guided to the space in which the inner filter 201 of the second body 20 is accommodated. In addition, it is possible to easily remove foreign substances guided to a space in which the filter 201 is accommodated while the user replaces the filter 201.

The guide portion 107 of the present embodiment forms a predetermined inclination in the direction of gravity, and the circumference formed by the end of the guide portion 107 preferably corresponds to the circumference of the filter 201.

The guide part 107 may have a predetermined inclination such that foreign substances entering through the discharge part 11 are guided in a direction opposite to the flow of air flowing inside the air purifier.

In more detail, the guide part 107 may include: a first member 1071 formed at an end of the shield 103 and bent toward an inner side of the first body 1071; and a second member 1072 extending from the first member 1071 in the inner direction of the first body 10.

In order to ensure a contraction rate and a sealing rate of the inside of the fan module when the shield 103 is injection molded, the second member 1072 may be extended by a predetermined length toward the inside of the first body 10, and a coupling portion where the shield 103 is fixed to the upper portion of the second body 20 or the lower portion of the first body 10 may be formed by using an area of the second member 1072.

Of course, the rigidity may be enhanced by reducing the extended length of the second member 1072 and increasing the thickness of the second member 1072 in the height direction. This is because the foreign matter may be prevented from being guided to the second body 20 side corresponding to the length of the second member 1072 extended toward the inner side direction of the first body 10.

Therefore, the second member 1072 protrudes toward the radially inner side of the lower circumference of the shroud 103, and may form a predetermined inclination angle as the first member 1071.

In addition, the guide part 107 may further include a third member 1073 extending from the second member 1072 toward the second body 20. In the above configuration, since the shroud 103 and the guide portion 107 are integrally formed, the periphery formed by the third member 1073 can form an inflow port into which air moving from the second body 20 to the first body 10 side flows.

Further, by forming the third member 1073, the shrinkage rate of the shield can be ensured when the shield 103 is injection molded.

While various embodiments of the present invention have been described in detail, it should be understood that various changes can be made therein by those skilled in the art without departing from the scope of the invention. The scope of the claims of the invention is therefore not limited to the illustrated embodiments, but depends not only on the scope of the claims, but also on equivalents thereof.

Claims

1. An air purifier, comprising:

a body for forming an appearance;

a suction part formed on the main body for sucking air;

a discharge portion formed on the main body and discharging air sucked through the suction portion; and

a fan module disposed inside the main body to form a flow of air flowing from the suction portion to the discharge portion,

the fan module includes:

a driving part forming a rotating shaft and generating power;

a fan receiving power from the driving part and rotating about the rotating shaft; and

a shroud accommodating the fan and disposed between the suction portion and the discharge portion to guide air sucked through the suction portion to the discharge portion,

the shield includes a guide portion for guiding the foreign matter flowing in through the discharge portion in a direction opposite to the flow of the air.

2. The air purifier of claim 1, wherein the body comprises:

a first body having the discharge part formed on one surface thereof and forming a space for accommodating the fan module; and

and a second body formed with the suction part and separably provided with the first body.

3. The air cleaner of claim 2, wherein the suction part is formed along a circumference of the second body.

4. The air cleaner of claim 3, wherein the second body includes a filter spaced apart from the suction part by a predetermined interval and disposed along an inner circumference of the second body.

5. The air cleaner according to claim 2, wherein the shield is provided such that a cross section thereof becomes wider along a moving direction of the air flowing into the suction part.

6. The air cleaner according to claim 5, wherein an inflow port is formed at the guide portion, the inflow port being formed at an end of the shield to guide the air flowing into the suction portion to the first body side.

7. The air purifier of claim 5, wherein the guide comprises:

a first member formed at an end of the shield and bent toward an inner side of the first body; and

and a second member extending from the first member in a direction inward of the first body.

8. The air cleaner according to claim 7, wherein the second member is provided to be inclined toward a moving direction of the air flowing into the suction part.

9. The air cleaner of claim 7, wherein the guide further comprises a third member that is elongated from the second member toward the second body.

10. The air cleaner according to claim 9, wherein an inflow port for guiding the air flowing into the suction part to the first main body side is formed at the third member.